阅读说明：本技术 一种双面喷墨打印机 (Double-sided ink-jet printer ) 是由 单健 王家远 闫峂 脱占贺 单川 于 2021-07-30 设计创作，主要内容包括：本发明涉及一种双面喷墨打印机,包括打印单元；打印单元包括主框架；主框架上安装有走料装置,走料装置包括若干支撑辊,打印介质在支撑辊的支撑下形成四个打印区域；打印区域的上方设有Y轴传动装置；打印小车在Y轴传动装置的驱动下向前移动至打印区域的上方、向后移动至喷头维护区域的上方；打印小车内安装有打印喷头,打印喷头的底面与其下方的打印介质相互平行；打印喷头的上方设有恒温二级墨盒；喷头维护区域内设有安装于Y轴传动装置下方的喷头维护装置；主框架的后方设有独立供墨装置。本发明具有可适应打印功能的迭代升级、升级速度快、升级周期短、升级成本低、喷头清理效果好、打印质量高的有益效果。(The invention relates to a double-sided ink-jet printer, comprising a printing unit; the printing unit includes a main frame; the main frame is provided with a feeding device, the feeding device comprises a plurality of supporting rollers, and the printing medium forms four printing areas under the support of the supporting rollers; a Y-axis transmission device is arranged above the printing area; the printing trolley is driven by the Y-axis transmission device to move forwards to the position above the printing area and move backwards to the position above the nozzle maintenance area; a printing spray head is arranged in the printing trolley, and the bottom surface of the printing spray head is parallel to a printing medium below the printing spray head; a constant-temperature secondary ink box is arranged above the printing nozzle; a nozzle maintenance device arranged below the Y-axis transmission device is arranged in the nozzle maintenance area; an independent ink supply device is arranged behind the main frame. The invention has the advantages of being suitable for iterative upgrade of printing functions, high upgrade speed, short upgrade period, low upgrade cost, good nozzle cleaning effect and high printing quality.)

1. A duplex ink jet printer, comprising: comprises a printing unit; the printing unit comprises a main frame (1); the feeding device is mounted on the main frame (1) and used for supporting and conveying a printing medium, the feeding device comprises a plurality of supporting rollers, and the printing medium forms four printing areas under the supporting of the supporting rollers, namely a first printing area, a second printing area, a third printing area and a fourth printing area; a Y-axis transmission device (3) is arranged above the printing area; a printing trolley (2) is arranged above the Y-axis transmission device (3), and the printing trolley (2) is driven by the Y-axis transmission device (3) to move forwards to the position above a printing area and move backwards to the position above a nozzle maintenance area; a bottom plate is arranged at the lower part of the printing trolley (2), a printing spray head (23) is arranged on the bottom plate, and the bottom surface of the printing spray head (23) is parallel to a printing medium below the printing spray head; a constant-temperature secondary ink box (21) is arranged above the printing spray head (23), and the constant-temperature secondary ink box (21) is used for continuously providing constant-temperature ink for the printing spray head (23); a nozzle maintenance device (4) arranged below the Y-axis transmission device (3) is arranged in the nozzle maintenance area and used for cleaning and maintaining the printing nozzle (23); an independent ink supply device (5) is arranged behind the main frame (1) and is used for continuously supplying ink for the printing nozzle (23); one side of the rear part of the main frame (1) is provided with a negative pressure module (7), and the negative pressure module (7) is used for adjusting the negative pressure value in the ink cavity of the constant-temperature secondary ink box (21).

2. A duplex ink jet printer according to claim 1, wherein: the supporting rollers comprise a first supporting roller (61), a second supporting roller (62) and a third supporting roller (63) which are arranged on the left side of the main frame (1), and the supporting rollers further comprise a fourth supporting roller (64), a fifth supporting roller (65) and a sixth supporting roller (66) which are arranged on the right side of the main frame (1); the height of the first supporting roller (61) is lower than that of the third supporting roller (63), the second supporting roller (62) is positioned between the first supporting roller (61) and the third supporting roller (63) and above the connecting line of the first supporting roller (61) and the third supporting roller (63), and a printing medium forms a first printing area and a second printing area which are adjacent under the support of the first supporting roller (61), the second supporting roller (62) and the third supporting roller (63); the height of the fourth supporting roller (64) is higher than that of the sixth supporting roller (66), the fifth supporting roller (65) is located between the fourth supporting roller (64) and the sixth supporting roller (66) and above a connecting line of the fourth supporting roller (64) and the sixth supporting roller (66), and the printing medium forms a third printing area and a fourth printing area which are adjacent under the support of the fourth supporting roller (64), the fifth supporting roller (65) and the sixth supporting roller (66).

3. A duplex ink jet printer according to claim 1, wherein: a bottom plate installation adjusting device (22) is arranged at the bottom of the printing trolley (2), the bottom plate installation adjusting device (22) comprises an installation frame (221), a bottom plate installation frame (222) installed on the installation frame (221) and an adjusting unit, the bottom plate is installed on the lower end face of the bottom plate installation frame (222), the printing spray head (23) is installed on the bottom plate, and the adjusting unit is arranged on the installation frame (221) and used for adjusting the rotation angle, the front-back position, the inclination angle and the height of the bottom plate installation frame (222);

preferably, the bottom plate mounting frame (222) comprises a first platform (2221) and a second platform (2222) which are respectively located at the front side and the rear side, and the first platform (2221) and the second platform (2222) are respectively mounted on the mounting frame (221) in an overlapping manner;

preferably, the first platform (2221) comprises a positioning block arranged on the outer side of the first platform, an adjusting block (224) is arranged on the outer side of the positioning block, an adjusting groove is formed in the second platform (2222), a positioning pin (223) is arranged in the adjusting groove, the positioning pin (15) is mounted on the mounting frame (221), jack screw holes are respectively formed in the left side and the right side of the first platform (2221) and the second platform (2222), and jack screws are arranged in the jack screw holes;

preferably, the mounting frame (221) is provided with a first boss (2211) and a second boss (2212), the upper surface of the first boss (2211) is inclined in the left-right direction and parallel to the printing medium below the first boss, the upper surface of the second boss (2212) is parallel to the upper surface of the first boss (2211), and the first platform (2221) and the second platform (2222) are respectively lapped on the first boss (2211) and the second boss (2212);

preferably, the number of the bottom plate mounting frames (222) on the mounting frame (221) is two and the two bottom plate mounting frames are symmetrically arranged on the left side and the right side of the mounting frame (221).

4. A duplex ink jet printer according to claim 1, wherein: the constant-temperature two-stage ink box (21) comprises a two-stage ink box body (211), wherein ink cavities are arranged on two side faces of the two-stage ink box body (211) in a decibel mode and used for containing and supplying ink for printing the spray head (23), cover plates (212) are respectively covered on the outer portions of two sides of the two-stage ink box body (211), a groove (2121) is formed in the inner side of each cover plate (212), the cover plates (212) and the two-stage ink box body (211) are mutually covered to enable the grooves (2121) to form a closed containing cavity, each containing cavity is provided with a starting end and a terminating end, the starting end is communicated with a water outlet of a constant-temperature water circulation system, the terminating end is communicated with a water inlet of the constant-temperature water circulation system, an unidirectional water flow channel is formed in each containing cavity, a temperature sensor (214) and a liquid level sensor are arranged in each ink cavity, and the temperature sensor (214) is used for detecting the temperature of the ink in each ink cavity, the liquid level sensor is used for detecting the ink amount in the ink cavity;

preferably, the secondary ink cartridge body (211) comprises an ink cartridge body (2111), ink grooves (21111) are formed in two sides of the ink cartridge body (2111), an ink cartridge cover (2112) is covered outside the ink grooves (21111), and the outer side of the ink cartridge cover (2112) and the cover plate (212) are mutually covered;

preferably, the cartridge body (2111) and the cover plate (212) are made of a non-metal material, and the cartridge cover (2112) is made of a metal material.

5. A duplex ink jet printer according to claim 1, wherein: the spray head maintenance device (4) comprises a cleaning component (42) and a moisturizing component (43); the cleaning component (42) is positioned at the front side of the moisture preserving component (43), the cleaning component (42) comprises an ink absorbing component (422), and the position of the ink absorbing component (422) corresponds to the position of the printing nozzle (23) on the base plate; the ink absorbing component (422) comprises an ink absorbing head (4221) positioned above, an adaptive adjusting device I installed below the ink absorbing head (4221) and a driving device II (4224) installed below the adaptive adjusting device I, wherein the ink absorbing head (4221) is used for cleaning the bottom of the printing spray head (23) and absorbing liquid at the bottom of the printing spray head (23), the adaptive adjusting device I is used for adaptively adjusting the position of the ink absorbing head (4221) according to the position of the printing spray head (23), and the driving device II (4224) is used for adjusting the heights of the adaptive adjusting device I and the ink absorbing head (4221); the moisture preserving assembly (43) comprises a supporting device positioned at the bottom, an ink receiving disc (432) arranged on the supporting device, an adaptive adjusting device II arranged between the supporting device and the ink receiving disc (432), and a lifting driving mechanism arranged on the supporting device and capable of driving the ink receiving disc (432) to move up and down, wherein the ink receiving disc (432) corresponds to the bottom plate in position, and the adaptive adjusting device II is used for adaptively adjusting the position of the ink receiving disc (432) according to the position of the bottom plate.

6. The duplex ink jet printer according to claim 5, wherein: the left side and the right side of the ink suction head (4221) are provided with flanges (42211), the distance between the two flanges (42211) is matched with the width of the printing nozzle (23), the ink suction head (4221) is provided with a cleaning channel (42212), a first ink suction channel (42213) and a second ink suction channel (42214) which are positioned between the two flanges (42211), cleaning liquid is introduced into the cleaning channel (42212) and used for flushing the bottom of the printing nozzle (23), the first ink suction channel (42213) and the second ink suction channel (42214) are respectively connected with a negative pressure air source and used for carrying out primary adsorption and secondary adsorption on liquid at the bottom of the printing nozzle (23), and the upper end face of the second ink suction channel (42214) is higher than the upper end face of the first ink suction channel (42213).

7. A duplex ink jet printer according to claim 6, wherein: the self-adaptive adjusting device I comprises an adjusting block (4222) positioned above and an adjusting seat (4223) positioned below and movably connected with the adjusting block (4222), the ink suction head (4221) is fixedly installed above the adjusting block (4222), and the driving device II (4224) is fixedly installed below the adjusting seat (4223); a cleaning liquid groove (42221) matched with the cleaning channel (42212) is arranged on the adjusting block (4222); the adjusting block (4222) is provided with a negative pressure groove (42222), and the negative pressure groove (42222) is matched with the first ink suction channel (42213) and the second ink suction channel (42214).

8. A duplex ink jet printer according to claim 7, wherein: springs I (4227) are respectively connected between the lower end face of the adjusting block (4222) and four corners of the upper end face of the adjusting seat (4223), guide holes (42223) perpendicular to the bottom face are respectively formed in the left side and the right side of the bottom face of the adjusting block (4222), a pin (4225) is arranged in each guide hole (42223), the pin (4225) is fixedly connected with the adjusting seat (4223) and is arranged in each guide hole (42223), a ring groove is formed in the position, above the guide holes (42223), of the pin (4225), and a shaft check ring (4226) is clamped in the ring groove; the guide hole (42223) is a long round hole, the left side surface and the right side surface of the adjusting block (4222) are respectively provided with a transverse hole (42224) which is perpendicular to the guide hole (42223), and the bottom of the transverse hole (42224) is provided with a spring II (4228) which is abutted to the pin (4225).

9. The duplex ink jet printer according to claim 5, wherein: the self-adaptive adjusting device II comprises a mounting bar (434) mounted on the supporting device, mounting brackets (433) mounted on two sides of the ink receiving disc (432), a guide nail (435) mounted between the mounting bar (434) and the mounting brackets (433) and with the upper end arranged above the mounting brackets (433), and a spring IV (436) sleeved outside the guide nail (435) and arranged between the mounting brackets (433) and the mounting bar (434).

10. A duplex ink jet printer according to claim 1, wherein: the independent ink supply device (5) comprises a main ink tank (51), an ink pump I (53) and a cache ink tank (52), wherein the ink pump I (53) is arranged between the main ink tank (51) and the cache ink tank (52) and is respectively communicated with the main ink tank (51) and the cache ink tank (52), a liquid level sensor is arranged in the cache ink tank (52), and the liquid level sensor comprises a high liquid level sensor and a low liquid level sensor; when the low liquid level sensor is triggered, the ink pump I (53) pumps ink from the main ink tank (51) into the buffer ink tank (52), when the high liquid level sensor is triggered, the ink pump I (53) stops pumping ink from the main ink tank (51) into the buffer ink tank (52), and when the low liquid level sensor is continuously triggered, the main ink tank (51) is supplemented with ink or replaced by the main ink tank (51); the buffer ink tank (52) is communicated with an ink cavity of the constant-temperature secondary ink box (21);

preferably, the independent ink supply device (5) further comprises an ink path component (54), and the buffer ink tank (52) is communicated with an ink cavity of the constant-temperature secondary ink box (21) through the ink path component (54);

preferably, the ink path assembly (54) comprises an ink pump II (541), a filter (542) and a degassing device (543) which are connected in sequence, and the ink pump II (541) is communicated with the buffer ink tank (52);

preferably, the ink path assembly (54) further comprises a return valve (544), one end of the return valve (544) is communicated with the printing spray head (23), and the other end of the return valve is communicated with the buffer ink tank (52).

Technical Field

The invention relates to the technical field of ink-jet printing equipment, in particular to a double-sided ink-jet printer.

Background

The digital printer can realize the printing on demand at regular time and quantity under the control of a computer and other equipment, meet the requirement of personalized printing and realize zero stock, has incomparable advantages of the traditional printing, and is increasingly widely applied to the printing field. In recent years, digital printers capable of duplex printing are increasingly used in the book printing and magazine printing industries.

For a high-yield and high-efficiency double-sided digital ink-jet printer, the volume is very large, the production period of the large-sized digital printer is very long, the time from part acquisition to finished product manufacturing needs several months, the price is high, the transportation cost is high, and the return on investment period for a printer user to purchase the printer needs three to five years. With the development of printing technology, the technology updating speed of the digital printer is faster and faster, and with the scale expansion of users, the service range is expanded continuously, and the functions of the printer need to be updated continuously, so the elimination rate of printing equipment is increased continuously, and a plurality of users of the printer can not adapt to the updating speed of the machine; firstly, changing machines requires a significant capital cost, secondly, large printers are not easily transported out of the factory and the subsequent disposal of waste products is very cumbersome. At present, printer users often require printer manufacturers to upgrade and modify the existing machines in order to save cost, but because subsequent upgrading problems are not considered when many printer manufacturers design printers, parts which are adapted to upgrade need to be redesigned, purchased and assembled, then the parts enter the factory buildings of the users to be modified and debugged on site, and the upgrading period is often as long as two months or three months, so that great loss is caused to the services of the users. There is therefore a need for a digital printer that can be updated and iterated quickly.

The existing double-sided digital ink-jet printer is often provided with an air suction platform in a printing area, and the air suction platform is used for adsorbing a printing medium to keep the printing medium flat, but the air suction platform has the following problems: the air suction platform with high flatness has higher cost; when the air suction platform is installed, the technical difficulty of leveling is high; the contact area between the air suction platform and the printing medium is large, and when the printing medium runs at high speed, static electricity can be generated to adsorb ink drops, so that the drop points of the ink drops are inaccurate, and the printing quality is influenced; when the surface of the printing medium is provided with the special coating, the friction between the printing medium and the air suction platform can damage the coating on the surface of the printing medium due to the large contact area; when double-sided printing is performed, the printed medium surface and the air suction platform rub at high speed to damage the printed patterns to a certain extent.

When a printing head of an ink jet printer performs printing, due to different shapes and colors of patterns, the use frequency of each jet orifice is different, and thus, partial jet orifices are dried and blocked due to the fact that the jet orifices do not work for a long time. When the jam of orifice appears in the printing process, need press the china ink in order to dredge the orifice to the shower nozzle at the printing in-process, the shower nozzle surface can persist ink or the dry particulate matter that ties after pressing the china ink, for avoiding remaining the ink influence to print the quality, need can reprint after the ink clean up on shower nozzle surface.

In the prior art, a nozzle cleaning device is generally a contact type cleaning device, for example, a contact type cleaning mode of scraping an ink scraping sheet to a nozzle is adopted, and particles at other parts are easily scraped into other spray holes by the contact type cleaning mode, so that the normal spray holes are blocked, and the service life of the nozzle is influenced; when patterns with various colors are printed, the adjacent two longitudinal rows of nozzles usually print ink with different colors, when the nozzles are scraped by a doctor blade, color mixing at the spray holes of the two longitudinal rows of nozzles is easily generated, although the ink scraping blade scrapes the nozzles and then rotates and immerses the nozzles into cleaning liquid for cleaning, the cleaning liquid is polluted by the ink along with too many cleaning times, and the ink mixing at the spray holes is also caused when the ink is scraped again, so that the next printing task is influenced; the ink scraping sheet rotates to enter cleaning liquid for cleaning after scraping the nozzle, then rotates out for next ink scraping, and the interval time between two adjacent ink scraping is long, so that the printing efficiency is influenced.

In order to solve the above problems, the prior art discloses a non-contact type nozzle cleaning device, such as a water spray vacuum adsorption device disclosed in chinese patent CN205705760, and a nozzle maintenance device disclosed in chinese patent CN 213649136U. Although the aforesaid patent has avoided the problem of the normal orifice of jam or the cross color in the contact clearance, the vacuum adsorption mode needs the interval very little just can produce certain vacuum between adsorption equipment and the shower nozzle to the absorption effect that makes is good. The height of a spray head of an actual printer can be finely adjusted along with the difference of the thickness of a printing medium, in the prior art disclosed by the Chinese patent CN205705760, the height of a main body is not adjustable, in the prior art disclosed by the Chinese patent CN213649136U, the overall height of an ink absorption assembly is adjusted through a driving assembly, and when the height of the spray head is finely adjusted due to the difference of the thickness of the printing medium such as paper, the driving device cannot adjust the height by the order of magnitude of the minute, so that a good vacuum degree cannot be formed between the spray heads by an adsorption device, and the cleaning effect of the spray head is influenced; because machining error and assembly error lead to the bottom plate itself to have certain slope to the shower nozzle height of difference on the same bottom plate has little difference, and each shower nozzle also can have little inclination for the printing medium face, and the horizontal position of the shower nozzle of same vertical row also can have little deviation, and above-mentioned prior art can't self-adaptation each shower nozzle height, inclination and horizontal position lead to the clearance effect of shower nozzle poor.

In summary, the prior art double-sided digital inkjet printer has the following problems:

1) the existing printer cannot meet the upgrading requirement of printing equipment, and has high upgrading cost and low speed;

2) the air suction platform is arranged in the printing area to support and adsorb the printing medium to keep the printing medium flat, but the air suction platform has the problems of high cost, difficult leveling, inaccurate drop point of ink droplets caused by static electricity generation, damage to the coating on the surface of the printing medium and damage to the patterns on the surface of the printed medium.

3) The contact type spray head cleaning mode is easy to scrape particles at other parts into normal spray holes, so that the normal spray holes are blocked, and the service life of the spray head is influenced; cross color can occur when printing ink with various colors; the time interval between two adjacent ink scraping is long, so that the printing efficiency is influenced;

4) the non-contact type nozzle cleaning mode cannot adapt to the height, the inclination angle and the transverse position of the nozzle in a self-adaptive mode, so that the cleaning effect is poor, and the subsequent printing quality is influenced.

Disclosure of Invention

The invention aims to provide a double-sided ink-jet printer to solve the defects in the prior art, and the technical problem to be solved by the invention is realized by the following technical scheme.

A duplex ink jet printer includes a printing unit; the printing unit includes a main frame; the feeding device is mounted on the main frame and used for supporting and conveying a printing medium, the feeding device comprises a plurality of supporting rollers, and the printing medium forms four printing areas under the support of the supporting rollers, namely a first printing area, a second printing area, a third printing area and a fourth printing area; a Y-axis transmission device is arranged above the printing area; a printing trolley is arranged above the Y-axis transmission device, and the printing trolley is driven by the Y-axis transmission device to move forwards to the position above a printing area and move backwards to the position above a nozzle maintenance area; the lower part of the printing trolley is provided with a bottom plate, a printing spray head is arranged on the bottom plate, and the bottom surface of the printing spray head is parallel to a printing medium below the printing spray head; a constant-temperature secondary ink box is arranged above the printing nozzle and used for continuously providing constant-temperature ink for the printing nozzle; a nozzle maintenance device arranged below the Y-axis transmission device is arranged in the nozzle maintenance area and used for cleaning and maintaining the printing nozzle; an independent ink supply device is arranged behind the main frame and used for continuously supplying ink for the printing nozzle; and a negative pressure module is arranged on one side of the rear part of the main frame and is used for adjusting the negative pressure value in the ink cavity of the constant-temperature secondary ink box.

Preferably, the supporting rollers include a first supporting roller, a second supporting roller and a third supporting roller which are installed on the left side of the main frame, and the supporting rollers further include a fourth supporting roller, a fifth supporting roller and a sixth supporting roller which are installed on the right side of the main frame; the height of the first supporting roller is lower than that of the third supporting roller, the second supporting roller is positioned between the first supporting roller and the third supporting roller and above a connecting line of the first supporting roller and the third supporting roller, and a printing medium forms a first printing area and a second printing area which are adjacent under the support of the first supporting roller, the second supporting roller and the third supporting roller; the height of the fourth supporting roller is higher than that of the sixth supporting roller, the fifth supporting roller is located between the fourth supporting roller and the sixth supporting roller and above a connecting line of the fourth supporting roller and the sixth supporting roller, and the printing medium forms a third printing area and a fourth printing area which are adjacent under the support of the fourth supporting roller, the fifth supporting roller and the sixth supporting roller.

Preferably, a bottom plate installation adjusting device is arranged at the bottom of the printing trolley, the bottom plate installation adjusting device comprises an installation frame, a bottom plate installation frame installed on the installation frame, and an adjusting unit, the bottom plate is installed on the lower end face of the bottom plate installation frame, the printing spray head is installed on the bottom plate, and the adjusting unit is arranged on the installation frame and used for adjusting the rotation angle, the front-back position, the inclination angle and the height of the bottom plate installation frame;

preferably, the bottom plate mounting frame comprises a first platform and a second platform which are respectively positioned at the front side and the rear side, and the first platform and the second platform are respectively mounted on the mounting frame in a lap joint manner;

preferably, the first platform comprises a positioning block arranged on the outer side of the first platform, an adjusting block is arranged on the outer side of the positioning block, an adjusting groove is arranged on the second platform, a positioning pin is arranged in the adjusting groove and is installed on the installation frame, jack screw holes are respectively arranged on the left side and the right side of the first platform and the second platform, and jack screws are arranged in the jack screw holes;

preferably, the mounting frame is provided with a first boss and a second boss respectively, the upper surface of the first boss inclines in the left-right direction and is parallel to the printing medium below the first boss, the upper surface of the second boss is parallel to the upper surface of the first boss, and the first platform and the second platform are respectively lapped on the first boss and the second boss;

preferably, the number of the bottom plate installation frames on the installation frame is two and the bottom plate installation frames are symmetrically arranged on the left side and the right side of the installation frame.

Preferably, the constant-temperature secondary ink box comprises a secondary ink box body, ink cavities are arranged on two side surfaces of the secondary ink box body in decibel, used for containing the ink supplied to the printing nozzle, the two sides of the secondary ink box body are respectively covered with a cover plate, the inner side of the cover plate is provided with a groove, the cover plate and the secondary ink box body are mutually covered to ensure that the groove forms a closed accommodating cavity, the containing cavity is provided with an initial end and a terminating end, the initial end is communicated with the water outlet of the constant-temperature water circulating system, the stopping end is communicated with a water inlet of the constant-temperature water circulation system, so that a unidirectional water flow channel is formed in the accommodating cavity, a temperature sensor and a liquid level sensor are arranged in the ink cavity, the temperature sensor is used for detecting the temperature of ink in the ink cavity, and the liquid level sensor is used for detecting the ink amount in the ink cavity;

preferably, the secondary ink box body comprises an ink box body, ink grooves are formed in two sides of the ink box body, an ink box cover covers the ink grooves, and the outer side of the ink box cover and the cover plate are mutually covered;

preferably, the cartridge body and the cover plate are made of a non-metallic material, and the cartridge cover is made of a metallic material.

Preferably, the spray head maintenance device comprises a cleaning component and a moisturizing component; the cleaning assembly is positioned on the front side of the moisturizing assembly and comprises an ink absorbing assembly, and the position of the ink absorbing assembly corresponds to the position of the printing nozzle on the bottom plate; the ink absorbing assembly comprises an ink absorbing head positioned above, an adaptive adjusting device I installed below the ink absorbing head and a driving device II installed below the adaptive adjusting device I, the ink absorbing head is used for cleaning the bottom of the printing nozzle and adsorbing liquid at the bottom of the printing nozzle, the adaptive adjusting device I is used for adaptively adjusting the position of the ink absorbing head according to the position of the printing nozzle, and the driving device II is used for adjusting the heights of the adaptive adjusting device I and the ink absorbing head; the moisturizing assembly comprises a supporting device positioned at the bottom, an ink receiving disc arranged on the supporting device, a self-adaptive adjusting device II arranged between the supporting device and the ink receiving disc, and a lifting driving mechanism arranged on the supporting device and capable of driving the ink receiving disc to move up and down, wherein the ink receiving disc corresponds to the bottom plate, and the self-adaptive adjusting device II is used for self-adaptively adjusting the position of the ink receiving disc according to the position of the bottom plate.

Preferably, flanges are arranged on the left side and the right side of the ink suction head, the distance between the two flanges is matched with the width of the printing nozzle, a cleaning channel, a first ink suction channel and a second ink suction channel are arranged between the two flanges and are respectively arranged on the ink suction head, cleaning liquid is introduced into the cleaning channel and used for flushing the bottom of the printing nozzle, the first ink suction channel and the second ink suction channel are respectively connected with a negative pressure air source and are respectively used for carrying out primary adsorption and secondary adsorption on liquid at the bottom of the printing nozzle, and the upper end face of the second ink suction channel is higher than the upper end face of the first ink suction channel.

Preferably, the adaptive adjusting device I comprises an adjusting block located above and an adjusting seat located below and movably connected with the adjusting block, the ink suction head is fixedly installed above the adjusting block, and the driving device II is fixedly installed below the adjusting seat; the adjusting block is provided with a cleaning liquid groove matched with the cleaning channel; and a negative pressure groove is arranged on the adjusting block and is matched with the first ink absorbing channel and the second ink absorbing channel.

Preferably, springs I are respectively connected between the lower end surface of the adjusting block and four corners of the upper end surface of the adjusting seat, guide holes perpendicular to the bottom surface are respectively formed in the left side and the right side of the bottom surface of the adjusting block, pins are arranged in the guide holes, the pins are fixedly connected with the adjusting seat and arranged in the guide holes, annular grooves are formed in the positions, above the guide holes, of the pins, and shaft retaining rings are clamped in the annular grooves; the guide hole is a long round hole, transverse holes perpendicular to the guide hole are formed in the left side face and the right side face of the adjusting block respectively, and a spring II in butt joint with the pin is arranged at the bottom of each transverse hole.

Preferably, the self-adaptive adjusting device II includes a mounting bar mounted on the supporting device, mounting brackets mounted on two sides of the ink receiving tray, a guide pin mounted between the mounting bar and the mounting bracket and having an upper end disposed above the mounting bracket, and a spring IV sleeved outside the guide pin and disposed between the mounting bracket and the mounting bar.

Preferably, the independent ink supply device comprises a main ink tank, an ink pump I and a buffer ink tank, the ink pump I is arranged between the main ink tank and the buffer ink tank and is respectively communicated with the main ink tank and the buffer ink tank, a liquid level sensor is arranged in the buffer ink tank, and the liquid level sensor comprises a high liquid level sensor and a low liquid level sensor; when the low liquid level sensor is triggered, the ink pump I pumps ink from the main ink tank into the cache ink tank, when the high liquid level sensor is triggered, the ink pump I stops pumping ink from the main ink tank into the cache ink tank, and when the low liquid level sensor is continuously triggered, the main ink tank is replenished with ink or replaced; the buffer ink tank is communicated with an ink cavity of the constant-temperature secondary ink box;

preferably, the independent ink supply device further comprises an ink path component, and the cache ink tank is communicated with the ink cavity of the constant-temperature secondary ink box through the ink path component;

preferably, the ink path assembly comprises an ink pump II, a filter and a degassing device which are connected in sequence, and the ink pump II is communicated with the cache ink tank;

preferably, the ink path assembly further comprises a return valve, one end of the return valve is communicated with the printing nozzle, and the other end of the return valve is communicated with the cache ink tank.

Compared with the prior art, the invention has the following beneficial effects:

1) a supporting roller is adopted to replace an air suction platform in the printing area, so that the cost is lower; the adjustment of the flatness is converted into the adjustment of the parallelism, so that the adjustment is easier; the contact area between the supporting roller and the printing medium is reduced, and the roller rotates along with the movement of the printing medium, so that the relative motion between the roller and the printing medium is reduced, and the condition of damaging a coating or a pattern on the surface of the printing medium caused by friction is avoided; static electricity is not easy to generate, and the printing effect is better; the distance between the rollers is shorter, so that the shaking of the printing medium in the moving process can be reduced, and the printing quality is improved;

2) by arranging four printing areas in the printing unit, arranging different numbers of nozzle groups above each printing area, converting the types of ink printed by the nozzle groups and matching different roller winding modes of a printing medium, the iterative upgrade of the printing function can be quickly realized on the basis of not damaging the original structure of the printer, the upgrade period is shortened, and the upgrade cost is saved; the Y-axis transmission device, the printing trolley, the nozzle group, the nozzle maintenance device, the independent ink supply device and the negative pressure module are all in modular design, the number of the parts can be expanded according to functional requirements, and the upgrading requirements can be responded quickly;

3) the invention adopts a non-contact cleaning mode, thereby avoiding the problems of poor cleaning effect, normal spray hole blockage, color cross and low cleaning efficiency caused by cleaning the printing spray head in the prior art by a contact cleaning mode;

4) the height of each ink suction head is independently and coarsely adjusted through the driving device II to adapt to the position of a longitudinal row of printing nozzles, and the position of each ink suction head is adaptively adjusted according to the position of each nozzle in the same row through the adaptive adjusting device I; the moisturizing device can roughly adjust the height of the ink tray through the lifting driving mechanism, and can finely adjust the height and the inclination angle of the ink tray through the self-adaptive adjusting device II according to the height and the inclination angle of the bottom plate of the spray head, so that the upper end of the ink tray is well attached to the bottom of the bottom plate, and ink is prevented from splashing to pollute other components during ink pressing;

5) the constant-temperature secondary ink box is ingenious in design, and has the beneficial effects of being good in constant-temperature effect, small in size, light in weight, long in service life and low in cost, ensuring good fluidity of ink and improving printing quality.

In conclusion, the double-sided ink-jet printer provided by the invention has the beneficial effects of being adaptable to iterative upgrade of printing functions, high in upgrade speed, short in upgrade period, low in upgrade cost, good in nozzle cleaning effect and high in printing quality.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

FIG. 3 is a schematic perspective view of the printing cart according to the present invention;

FIG. 4 is a schematic perspective view of a bottom plate mounting adjustment device according to the present invention;

FIG. 5 is a schematic perspective view of a bottom plate mounting frame according to the present invention;

FIG. 6 is a schematic perspective view of an adjusting block according to the present invention;

FIG. 7 is an exploded view of the thermostatic secondary cartridge of the present invention;

FIG. 8 is an exploded view of the secondary ink cartridge body of the present invention;

FIG. 9 is a schematic perspective view of the Y-axis transmission of the present invention;

FIG. 10 is a schematic perspective view of a Y-axis transmission according to the present invention;

FIG. 11 is a schematic perspective view of a sprinkler head maintenance device according to the present invention;

FIG. 12 is a perspective view of a cleaning assembly of the present invention;

FIG. 13 is an exploded view of an ink-receptive member in accordance with the present invention;

FIG. 14 is a schematic perspective view of an ink-jet head according to the present invention;

FIG. 15 is a schematic perspective view of an adjusting block according to the present invention;

FIG. 16 is a schematic cross-sectional view of an adjusting block according to the present invention;

fig. 17 is an exploded view of a moisturizing component of the present invention;

FIG. 18 is a perspective view of the lift driving mechanism of the present invention;

FIG. 19 is a schematic perspective view of an independent ink supply apparatus according to the present invention;

FIG. 20 is a front view schematically illustrating the construction of the ink tank according to the present invention;

FIG. 21 is a schematic structural view of a feeding device according to the present invention;

FIG. 22 is a schematic view of another structure of the feeding device of the present invention;

the reference numbers in the drawings are, in order: 1. a main frame, 11, a platen, 2, a printing trolley, 21, a constant temperature secondary ink box, 211, a secondary ink box body, 2111, an ink box body, 21111, an ink groove, 2112, an ink box cover, 21121, a water inlet channel, 21122, a water outlet channel, 21123, a threaded hole, 212, a cover plate, 2121, a groove, 21211, a starting end, 21212, a terminating end, 2122, a counter bore, 2123, a through hole I, 213, a sealing ring, 214, a temperature sensor, 22, a bottom plate mounting adjusting device, 221, a mounting frame, 2211, a first boss, 2212, a second boss, 222, a bottom plate mounting frame, 2221, a first platform, 2222, a second platform, 223, a positioning pin, 224, an adjusting block, 2241, a front and back position adjusting hole, 2242, a through hole II, 23, a printing nozzle, 231, a first nozzle group, 232, a second nozzle group, 233, a third nozzle group, 234, a fourth nozzle group, 235, a fifth nozzle group, 236 and a sixth nozzle group, 237. seventh nozzle group, 238, eighth nozzle group, 3, Y-axis transmission device, 31, support frame, 32, driving device I, 33, guide device I, 4, head maintenance device, 41, support plate, 411, outer side plate, 412, transverse plate, 42, cleaning member, 421, mounting plate, 422, ink absorbing member, 4221, ink absorbing head, 42211, rib, 42212, cleaning channel, 42213, first ink absorbing channel, 42214, second ink absorbing channel, 42215, brush hole, 42216, brush, 4222, adjusting block, 42221, cleaning fluid tank, 42222, negative pressure tank, 42223, guide hole, 42224, transverse hole, 42225, side tank, 42226, brush tank, 4223, adjusting seat, 4224, driving device II, 4225, pin, 4226, shaft retainer, 4227, spring I, 4228, spring II, 4229, spring III, 423, 42424, ink guide tank, 425, guide tube, moisture retention plate, 4311, inner side plate, 4311, 432. the ink receiving tray, 433, a mounting bracket, 434, a mounting bar, 435, a guide nail, 436, a spring IV, 4371, a motor, 4372, a screw rod, 4373, a screw nut, 438, a guide device II, 44, a gas collecting block, 5, an independent ink supply device, 51, a main ink tank, 52, a buffer ink tank, 53, an ink pump I, 54, an ink path component, 541, an ink pump II, 542, a filter, 543, a degasser, 544, a reflux valve, 55, a moving trolley, 56, an ink tank, 61, a first support roller, 62, a second support roller, 63, a third support roller, 64, a fourth support roller, 65, a fifth support roller, 66, a sixth support roller, 67, a drying device, 68, a turnover lever, 7, a negative pressure module, 8 and a drag chain.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1:

a duplex ink jet printer, as shown in fig. 1 to 4, 10, 21 and 22, the improvement comprising: comprises a printing unit; the printing unit includes a main frame 1; the feeding device is mounted on the main frame 1 and used for supporting and conveying a printing medium, the feeding device comprises a plurality of supporting rollers, the printing medium forms four printing areas under the support of the supporting rollers, and the four printing areas are a first printing area, a second printing area, a third printing area and a fourth printing area respectively; a Y-axis transmission device 3 is arranged above the printing area; a printing trolley 2 is arranged above the Y-axis transmission device 3, and the printing trolley 2 is driven by the Y-axis transmission device 3 to move forwards to the position above a printing area and move backwards to the position above a nozzle maintenance area; a bottom plate is arranged at the lower part of the printing trolley 2, a printing nozzle 23 is arranged on the bottom plate, and the bottom surface of the printing nozzle 23 is parallel to a printing medium below the printing nozzle; a constant-temperature secondary ink box 21 is arranged above the printing nozzle 23, and the constant-temperature secondary ink box 21 is used for continuously providing constant-temperature ink for the printing nozzle 23; a nozzle maintenance device 4 arranged below the Y-axis transmission device 3 is arranged in the nozzle maintenance area and used for cleaning and maintaining a printing nozzle 23; an independent ink supply device 5 is arranged behind the main frame 1 and used for continuously supplying ink for the printing nozzle 23; and a negative pressure module 7 is arranged on one side of the rear part of the main frame 1, and the negative pressure module 7 is used for adjusting the negative pressure value in the ink cavity of the constant-temperature secondary ink box 21.

In the embodiment, the left side and the right side of the main frame 1 can be provided with the Y-axis transmission device 3, the Y-axis transmission device 3 is provided with the printing trolley 2, the printing trolley 2 is driven by the Y-axis transmission device 3 to move to the position above a printing area during printing, after printing is finished or when a nozzle is blocked and needs to be subjected to ink pressing and dredging, the printing trolley 2 is driven by the Y-axis transmission device 3 to move to a nozzle maintenance area, and the printing nozzle is cleaned and maintained by the nozzle maintenance device 4; the printing spray heads 23 are installed in the printing trolley 2, the printing spray heads 23 are longitudinally spliced in a staggered mode to form a plurality of spray head groups, so that the width of a printing breadth is increased, namely the width of the printing breadth is the total length covered by spray holes of the spliced spray heads, and the printing resolution ratio which can be realized after the printing spray heads in each spray head group are spliced is the same as the printing resolution ratio which can be realized by the spray heads; the printing medium forms four printing areas through the support of the supporting roller; furthermore, two bottom plates are arranged below each printing trolley 2, one printing area corresponds to the lower part of each bottom plate, two nozzle groups can be accommodated and arranged on each bottom plate, namely two nozzle groups can be arranged above each printing area; by arranging different numbers of nozzle groups in the four printing areas, changing the types of ink printed by the nozzle groups and matching different arrangement modes of printing media on the feeding device, the iterative upgrade of the printing function can be quickly realized; each independent ink supply device 5 can continuously supply ink for a printing nozzle for printing the same type of ink, and when the printer needs to print double-color or color ink, the number of the independent ink supply devices 5 can be increased according to the needs; the number of the negative pressure modules 7 is equal to that of the ink cavities of the constant-temperature secondary ink box 21, and the number of the negative pressure modules can be increased according to the functional requirements; the constant temperature secondary ink box 21 is used for providing constant temperature ink for the printing nozzle 23 so as to ensure the printing quality.

According to the double-sided ink-jet printer provided by the embodiment, the four printing areas are formed by the supporting rollers, different arrangement modes of printing media can be realized by the guide rollers in the feeding device, and the Y-axis transmission device 3, the printing trolley 2, the nozzle group, the nozzle maintenance device 4, the independent ink supply device 5 and the negative pressure module 7 are all in modular design, so that the number can be expanded according to functional requirements, and the iterative upgrade of the printing function can be quickly realized on the basis of not damaging the original structure of the printer; in this embodiment, print media in the printing area carries out bearing and conveying through the backing roll, and for the mode that carries out the bearing of print media in the printing area through the platform that induced drafts among the prior art, have following beneficial effect: the cost is lower; the adjustment of the flatness is converted into the adjustment of the parallelism, so that the adjustment is easier; the contact area between the supporting roller and the printing medium is reduced, and the roller rotates along with the movement of the printing medium, so that the relative motion between the roller and the printing medium is reduced, and the condition of damaging a coating or a pattern on the surface of the printing medium caused by friction is avoided; static electricity is not easy to generate, and the printing effect is better.

Further, referring to fig. 10, the Y-axis transmission device 3 includes a supporting frame 31, a driving device I32 installed in the middle of the supporting frame 31 and movably connected to the printing cart 2, and a guiding device 33 disposed between the supporting frame 31 and the printing cart 2.

Further, the driving device I32 includes a motor installed on the supporting frame 31, a lead screw with one end fixedly connected to an output end of the motor, and the other end of the lead screw movably connected to the bottom of the print carriage 2.

Further, the guiding device comprises guide rails installed at the left side and the right side of the supporting frame 31, and a sliding block installed at the bottom of the printing trolley and connected with the guide rails in a matching manner.

Furthermore, tow chains 8 are installed on two sides of the printing trolley.

Further, the negative pressure module 7 comprises a negative pressure air pump, an air cylinder, a release valve and an air suction valve, wherein the release valve is used for giving up from the air cylinder under the driving of the negative pressure air pump, the air suction valve is used for continuously sucking air into the air cylinder so as to maintain a basically constant negative pressure value in the air cylinder, and the air cylinder is communicated with an ink cavity of the constant temperature secondary ink box, so that the negative pressure value in the ink cavity is adjusted, and the normal ink supply is ensured.

Example 2:

on the basis of embodiment 1, referring to fig. 20 and 21, the support rollers include a first support roller 61, a second support roller 62 and a third support roller 63 which are installed on the left side of the main frame 1, and further include a fourth support roller 64, a fifth support roller 65 and a sixth support roller 66 which are installed on the right side of the main frame 1; the height of the first supporting roller 61 is lower than that of the third supporting roller 63, the second supporting roller 62 is positioned between the first supporting roller 61 and the third supporting roller 63 and above the connecting line of the first supporting roller 61 and the third supporting roller 63, and the printing medium forms a first printing area and a second printing area which are adjacent under the support of the first supporting roller 61, the second supporting roller 62 and the third supporting roller 63; the fourth supporting roller 64 is higher than the sixth supporting roller 66, the fifth supporting roller 65 is located between the fourth supporting roller 64 and the sixth supporting roller 66 and above a connecting line of the fourth supporting roller 64 and the sixth supporting roller 66, and the printing medium forms a third printing area and a fourth printing area which are adjacent to each other under the support of the fourth supporting roller 64, the fifth supporting roller 65 and the sixth supporting roller 66.

In this embodiment, the setting of the second supporting roller 62 divides the printing area into a first printing area and a second printing area, the setting of the fifth supporting roller 65 divides the printing area into a third printing area and a fourth printing area, the setting of the second supporting roller 62 and the fifth supporting roller 65 makes the distance between two adjacent supporting rollers shorter, the jitter of the printing medium in the operation process caused by the distance process can be avoided, the operation of the printing medium in the printing area is more stable, and the printing quality is further improved.

Further, print shower nozzle 23 vertically crisscross concatenation and form a plurality of shower nozzle groups to increase the width of printing the breadth, the device of walking about still includes a plurality of guide rolls, and print media can have different arrangement under the guide effect of guide roll, and the setting of collocation shower nozzle group can realize the printing of different functions. The following describes in detail a specific embodiment of implementing the upgrade of the printing function by the arrangement of the printing media and the setting of the head group:

1) the first printing medium arrangement mode: as shown in fig. 21, the printing medium winds to the upper side under the action of the guide roller and then winds downwards, sequentially passes through the second printing region and the first printing region from right to left, turns over under the support of the guide roller below and then winds upwards, and passes through the third printing region and the fourth printing region from left to right once, the printing medium is arranged below the printing region in a V-shaped structure through the guide roller, a drying device is arranged on the edge of the V-shaped structure and used for drying the printed printing medium, and the arrangement of the guide roller in the V-shaped structure enables the number of the drying devices which can be arranged in the space to be the largest, the drying area to be the largest and the drying effect to be better; the structural arrangement of each roller ensures that the surface of the printed medium does not directly contact with the roller, but contacts with the surface of the roller after being dried, thereby avoiding the damage of the printed pattern and the influence on the printing quality; according to the printing medium arrangement mode, the printing nozzle prints the front side of the printing medium above the first printing area and the second printing area, and prints the back side of the printing medium above the third printing area and the fourth printing area, namely double-side printing is achieved.

The following embodiment is used to describe a specific implementation of the above iterative upgrade of the printing function:

the nozzle group includes a first nozzle group 231 disposed above a first printing area and a fifth nozzle group 235 disposed above a third printing area, and further, the first nozzle group 231 and the fifth nozzle group 235 print the same ink; the present embodiment can realize a printing function of double-sided monochrome.

The head group includes a first head group 231 and a second head group 232 which are disposed above the first printing region and arranged in parallel, and further includes a fifth head group 235 and a sixth head group 236 which are disposed above the third printing region and arranged in parallel; further, the first head group 231 and the sixth head group 236 print the same ink, the second head group 232 and the fifth head group 235 print the same ink, and the first head group 231 and the second head group 232 print the same or different inks.

In this embodiment, when the first nozzle group 231 and the second nozzle group 232 print the same ink, that is, the first nozzle group 231, the second nozzle group 232, the fifth nozzle group 235, and the sixth nozzle group 236 print the same ink, the first nozzle group 231 and the second nozzle group 232 above the first printing area increase the front printing speed by one time, and similarly, the fifth nozzle group 235 and the sixth nozzle group 236 above the third printing area increase the back printing speed by one time, so that the double-sided monochrome double-speed printing function can be realized;

when the ink printed by the first nozzle group 231 is different from that printed by the second nozzle group 232, the printing of two colors is realized on the front surface and the back surface, namely, the double-sided and double-color printing function can be realized; when the front side and the back side are printed, the direction of the printing medium entering the first printing area is from right to left, and the direction of the printing medium entering the third printing area is from left to right, so that the arrangement sequence of the ink in the mode is symmetrical, and the color difference caused by different ink drop covering sequences in the double-side printing process is avoided.

The head group includes a first head group 231 and a second head group 232 arranged in parallel in the first printing region, a third head group 233 and a fourth head group 234 arranged in the second printing region, a fifth head group 235 and a sixth head group 236 arranged in the third printing region, a seventh head group 237 and an eighth head group 238 arranged in the fourth printing region; further, the first head group 231 and the eighth head group 238 print the same ink, the second head group 232 and the seventh head group 237 print the same ink, the third head group 233 and the sixth head group 236 print the same ink, the fourth head group 234 and the fifth head group 235 print the same ink, and the inks printed by the first head group 231, the second head group 232, the third head group 233 and the fourth head group 234 are different from each other.

In this embodiment, two nozzle groups are arranged in parallel above the first printing area, the second printing area, the third printing area and the fourth printing area, so that four colors of printing can be realized on the front surface and the back surface, that is, a double-sided color printing function can be realized; when the front side and the back side are printed, the direction of the printing medium entering the first printing area and the second printing area is from right to left, and the direction of the printing medium entering the third printing area and the fourth printing area is from left to right, so that the arrangement sequence of the ink in the mode is symmetrical, and the color difference caused by different ink drop covering sequences in the double-side printing process is avoided.

In summary, the printer with the first print medium arrangement mode can realize the printing functions of double-sided monochrome, double-sided monochrome double-speed, double-sided double-color and double-sided color.

2) Printing medium arrangement mode two: as shown in fig. 22, the printing medium passes through the first printing area and the second printing area from left to right in sequence under the action of the guide roller, then passes through the third printing area and the fourth printing area from left to right under the support action of the guide roller, the printing medium is arranged below the printing area through the guide roller into a V-shaped structure, a drying device is arranged on the edge of the V-shaped structure and used for drying the printed printing medium, and the arrangement of the V-shaped guide roller enables the number of the drying devices which can be arranged in the space to be the largest and the drying area to be the largest, so that the drying effect is better; the structural arrangement of each roller ensures that the surface of the printed medium does not directly contact with the roller, but contacts with the surface of the roller after being dried, thereby avoiding the damage of the printed pattern and the influence on the printing quality; according to the arrangement mode of the printing media, the printing nozzle prints the same surface of the printing media above the first printing area, the second printing area, the third printing area and the fourth printing area, and a large arc surface is formed among the four printing areas, so that the tension of the printing media in the operation process is not influenced, and the printing quality is prevented from being influenced by the fact that the surface of the printing media which are just printed contacts the surface of the roller; under the printing medium arrangement mode, the printer can realize the printing function of double-sided color with high precision, and the specific implementation mode of the function is described in detail as follows:

the head groups include a first head group 231 and a second head group 232 arranged in parallel in the first printing region, a third head group 233 and a fourth head group 234 arranged in the second printing region, a fifth head group 235 and a sixth head group 236 arranged in the third printing region, and a seventh head group 237 and an eighth head group 238 arranged in the fourth printing region; further, the first head group 231 and the eighth head group 238 print the same ink, the second head group 232 and the seventh head group 237 print the same ink, the third head group 233 and the sixth head group 236 print the same ink, the fourth head group 234 and the fifth head group 235 print the same ink, and the first head group 231, the second head group 232, the third head group 233 and the fourth head group 234 print different inks; further, the number of printing units is set to two, and the printing medium of one printing unit is output, turned over by the turning bar 68, and then conveyed to the other printing unit. In this embodiment, two nozzle groups are arranged in parallel above the first printing area, the second printing area, the third printing area and the fourth printing area; in the four printing areas, the two nozzle groups in the same printing area print the same ink, and the two nozzle groups in the same printing area can realize higher resolution due to mutual splicing, for example, the printing resolution which can be realized after the nozzles in one nozzle group are spliced is 600dpi, and the resolution of 1200dpi can be realized through the splicing of the two nozzle groups; the ink that the shower nozzle group in the different printing regions was printed is different, can be in order to accomplish four kinds of colours and be colored printing function, through setting up two printing unit to carry out the turn-over through upset thick stick 68 between two printing unit with the medium of undertaking the printing, can realize two-sided printing, and the ink mode of arranging in embodiment 2 and 3 is distinguished from, and the direction that gets into the printing region because of the printing medium of two printing unit is left to right, consequently need not to arrange the ink symmetry that the shower nozzle group printed.

In conclusion, through the arrangement mode of two printing media, the number of the nozzle groups and the arrangement of the printing ink are matched, so that the printer realizes the high-precision function upgrading of double-sided monochrome, double-sided monochrome double-speed, double-sided double-color, double-sided color and double-sided color on the basis of not damaging the original structure.

Example 3:

on the basis of embodiment 1 or 2, referring to fig. 3 to 5, a bottom plate mounting and adjusting device 22 is disposed at the bottom of the printing cart 2, the bottom plate mounting and adjusting device 22 includes a mounting frame 221, a bottom plate mounting frame 222 mounted on the mounting frame 221, and an adjusting unit, the bottom plate is mounted on the lower end surface of the bottom plate mounting frame 222, the printing head 23 is mounted on the bottom plate, and the adjusting unit is disposed on the mounting frame 221 and is used for adjusting the rotation angle, the front-back position, the inclination angle, and the height of the bottom plate mounting frame 222;

preferably, the bottom plate mounting frame 222 includes a first platform 2221 and a second platform 2222 respectively located at the front side and the rear side, and the first platform 2221 and the second platform 2222 are respectively mounted on the mounting frame 221 in an overlapping manner;

preferably, the first platform 2221 includes a positioning block disposed at an outer side thereof, an adjusting block 224 is disposed at the outer side of the positioning block, an adjusting groove is disposed on the second platform 2222, a positioning pin 223 is disposed in the adjusting groove, the positioning pin 15 is mounted on the mounting frame 221, two screw holes are respectively disposed at left and right sides of the first platform 2221 and the second platform 2222, and a screw is disposed in the screw hole;

preferably, the mounting frame 221 is provided with a first boss 2211 and a second boss 2212, the upper surface of the first boss 2211 is inclined in the left-right direction and parallel to the printing medium below the first boss 2211, the upper surface of the second boss 2212 is parallel to the upper surface of the first boss 2211, and the first platform 2221 and the second platform 2222 are respectively lapped on the first boss 2211 and the second boss 2212;

preferably, the number of the bottom plate mounting frames 222 on the mounting frame 221 is two and symmetrically disposed on the left and right sides of the mounting frame 221.

Further, the mounting frame 221 is provided with a receiving groove for receiving the bottom plate mounting frame 222.

Further, as shown in fig. 6, a through hole II2242 penetrating through the front end surface of the adjusting block 224 is formed in the adjusting block 224, a fixing hole matched with the through hole II2242 is formed in the front end surface of the positioning block, and further, a screw penetrates through the through hole II2242 and the fixing hole to be matched and connected with the adjusting block 224 and the positioning block so as to fix the relative position of the positioning block.

Furthermore, the adjusting block 224 is provided with a rotation angle adjusting hole penetrating through the left and right end faces thereof, an adjusting nail I is arranged in the rotation angle adjusting hole, and the adjusting nail I penetrates through the rotation angle adjusting hole to be abutted against the left and right side faces of the positioning block.

Further, be equipped with on the adjusting block 224 and run through position control hole 2241 around its preceding terminal surface, be equipped with in the position control hole 2241 around, adjust nail II and pass position control hole 2241 around with the preceding terminal surface looks butt of locating piece.

Further, through holes III are formed in the first platform 2221 and the second platform 2222, and mounting frame fixing holes matched with the through holes III are formed in the first boss 2211 and the second boss 2212.

Further, the adjustment block 224 is mounted on the first boss 2211.

Further, the positioning pin 223 is mounted on the second boss 2212.

In this embodiment, by providing the first and second inclined bosses 2211 and 2212 on the mounting frame 221, a printing surface with a certain inclination angle with the horizontal plane can be adapted, for example, in embodiment 2, four printing areas are all planes with a certain inclination angle with the horizontal plane under the support of the supporting roller; the length of the adjusting nails I at the left side and the right side extending out of the rotation angle adjusting hole is adjusted, so that the bottom plate mounting frame 222 rotates by taking the positioning pins 223 as pivots, and the rotation angle adjustment of the bottom plate mounted at the bottom end of the bottom plate mounting frame 222 is realized; the base plate mounting frame 222 is moved back and forth by adjusting the length of the adjusting nail II extending out of the front and rear position adjusting hole 2241, so as to adjust the front and rear positions of the base plate mounted at the bottom end of the base plate mounting frame 222, when there is a small error in flatness between the base plate and the printing medium surface, or when the base plate cannot be parallel to the printing medium surface due to a processing error of the first boss 112 and the second boss 113, or when the height of the base plate relative to the printing medium surface needs to be adjusted slightly, the adjusting device 22 for mounting the base plate provided in this embodiment can adjust the horizontal inclination angle or height of the base plate mounting frame 222 by screwing the top wires located at the four corners of the base plate mounting frame 222 and adjusting the length of the top wire extending out of the top wire hole, the practicability is strong.

Example 4:

on the basis of any of the above embodiments, referring to fig. 7 and 8, the constant temperature secondary ink cartridge 21 includes a secondary ink cartridge body 211, two lateral surfaces of the secondary ink cartridge body 211 are respectively provided with an ink chamber for accommodating ink supplied to the printing head 23, two lateral outer portions of the secondary ink cartridge body 211 are respectively covered with a cover plate 212, an inner side of the cover plate 212 is provided with a groove 2121, the cover plate 212 and the secondary ink cartridge body 211 are covered with each other to enable the groove 2121 to form a closed accommodating chamber, the accommodating chamber has an initial end and a terminating end, the initial end is communicated with a water outlet of the constant temperature water circulation system, the terminating end is communicated with a water inlet of the constant temperature water circulation system to enable the accommodating chamber to form a unidirectional water flow channel, a temperature sensor 214 and a liquid level sensor are arranged in the ink chamber, the temperature sensor 214 is used for detecting the temperature of the ink in the ink chamber, the liquid level sensor is used for detecting the ink amount in the ink cavity;

preferably, the secondary ink cartridge body 211 comprises an ink cartridge body 2111, ink grooves 21111 are formed in two sides of the ink cartridge body 2111, an ink cartridge cover 2112 covers the outside of the ink grooves 21111, and the outer side of the ink cartridge cover 2112 and the cover plate 212 cover each other;

preferably, the cartridge body 2111 and the cover plate 212 are made of a non-metal material, and the cartridge cover 2112 is made of a metal material.

Further, the secondary ink box body 211 and the cover plate 212 are covered and integrated to form a flat cube.

Further, the cover plate 212 and the ink cartridge body 2111 are made of nylon, and the ink cartridge cover 2112 is made of stainless steel.

Further, a water inlet channel 21121 and a water outlet channel 21122 which are respectively communicated with the starting end 21211 and the terminating end 21212 of the accommodating cavity are arranged on the ink box cover 2112, the water inlet channel 21121 is communicated with a water outlet of the constant-temperature water circulation system, and the water outlet channel 21122 is communicated with a water inlet of the constant-temperature water circulation system.

Further, a sealing ring 213 is disposed between the periphery of the recess 2121 and the secondary ink cartridge body 211, and a groove for accommodating the sealing ring 212 is disposed on the inner side of the cover plate 212.

Further, a plurality of counter bores 2122 and a plurality of through holes I2123 are arranged on four side portions of the outer side surface of the cover plate 212, and the counter bores 2122 and the through holes I2123 are arranged in a crossing manner.

Further, the cartridge cover 2112 is provided with a through hole I2123 corresponding to the counter bore 2122 of the cover 212 and a threaded hole 21123 corresponding to the through hole I2123 of the cover 212, respectively, and the cartridge body 2111 is provided with a through hole I2123 corresponding to the threaded hole 21123 and the through hole I2123 of the cartridge cover 2112.

Further, an air source joint, an ink inlet joint and an ink outlet joint which are communicated with the ink cavity are arranged on the ink box cover 2112.

Further, the air source connector, the ink inlet connector, the ink outlet connector and the ink box cover 2112 are integrally formed, so that ink leakage at the interface can be avoided, and the service life of the constant-temperature secondary ink box 21 is prolonged.

Further, an air source channel, an ink inlet channel, and an ink outlet channel are disposed on the ink box cover 2112, and the air source connector, the ink inlet connector, and the ink outlet connector are communicated with the ink chamber.

Further, a seal ring is disposed between the periphery of the ink tank 21111 and the ink tank cover 2112, and a groove for accommodating the seal ring is disposed on the ink tank body 2111.

In this embodiment, the constant temperature water from the constant temperature water circulation system enters from the starting end 21211 of the accommodating chamber and gradually flows upwards from the bottom to the terminating end 21212, and since the ink in the ink chamber is located below, the constant temperature water initially entering the accommodating chamber starts to flow upwards from below, so that the ink in the ink chamber keeps a constant temperature, the heat capacity of the water is large, and the constant temperature effect is better; the ink cavities are arranged on two sides of the secondary ink box body 211, so that the whole ink cavity is flat, heat exchange between ink in the flat ink cavity and constant-temperature water in the groove 2121 is more efficient and uniform, a good constant-temperature effect is achieved, and space can be saved; a temperature sensor 214 is arranged in the ink cavity and used for detecting the temperature of the ink and feeding the temperature back to the constant-temperature water circulating system, the constant-temperature water circulating system adjusts the temperature of the water introduced into the groove according to the temperature of the ink, and the constant-temperature water circulating system is arranged at other positions outside the printing trolley 2 and does not occupy the space of the printing trolley; the two sides of the secondary ink box body 211 are provided with the ink cavities, one secondary ink box body 211 can contain two kinds of ink, when the types of the ink needed by printing are more, the number of the secondary ink box body 211 can be halved, the occupied space of the secondary ink box is effectively saved, and the weight of a printing trolley is reduced; the novel constant-temperature two-stage ink box provided by the embodiment is ingenious in design, and has the beneficial effects of good constant-temperature effect, small size and light weight.

The ink box 2111 and the cover plate 212 are made of non-metal materials, the ink box cover 2112 is made of metal materials, if threaded holes are processed on the ink box 2111 and the cover plate 212 made of non-metal materials, soft and hard matching formed in the threaded holes made of non-metal materials by metal screws can easily cause the generation of a fit clearance, thereby affecting the sealing performance of an ink cavity and an accommodating cavity, causing leakage of ink and constant temperature water, and if joints required by an ink path and a water circulation path are arranged on non-metal parts, the joints can be loosened after bumping or long-term use in the transportation process, causing the problem of liquid leakage, grooves, ink grooves, grooves and the like are processed on metal parts with great difficulty and high cost, so that in the embodiment, the threaded holes, the joints and the channels are arranged on the ink box cover 2112 made of metal materials, and the grooves, the ink grooves and the grooves are respectively arranged on the ink box 2111 and the cover plate 212 made of non-metal materials, the fixing strength of threaded connection and the service life of the joint can be ensured, and the processing cost can be reduced; meanwhile, the ink box cover 2112 is a flow guide layer, gas and ink are led into the ink cavity, constant temperature water is led into the accommodating cavity, and the ink box cover 2112 is made of metal materials, so that the high-efficiency heat exchange between the constant temperature water in the accommodating cavity and the ink in the ink cavity can be realized, and the temperature of the ink can be adjusted more easily; and apron 212 is non-metallic material, play the effect with external isolated heat exchange, because of in printing the in-process, because the heat that the work of integrated circuit board produced and drying device released lead to second grade ink horn ambient temperature higher, non-metallic's apron 212 can effectively the outside heat of separation inwards conduct, the surface that also can reduce the temperature transmission of thermostatic water to apron 212 leads to the condensation drop to appear on the surface simultaneously, and the condensation drop drips and damages components and parts easily, consequently, ink cartridge body 2111 in this embodiment, the setting of apron 212 and the different materials of ink cartridge lid 2112, both can improve assembly quality, reduce cost, increase of service life, can improve the constant temperature effect again.

When the ink cartridge is installed, the screws sequentially penetrate through the through holes I2123 and I2123 on the cartridge cover 2112 and the through holes I2123 on the cartridge body 2111 from the counter bores 2122 on the outer side of the cover plate 212 on one side and are in threaded connection with the threaded holes 21123 on the cartridge cover 2112 on the other side; similarly, on the other side, the screws sequentially pass through the counter bores 2122 on the cover plate 212, the through holes I2123 on the cartridge cover 2112 and the through holes I2123 on the cartridge body 2111, and are finally in threaded connection with the threaded holes 21123 on the cartridge cover 2112; the thread fixing strength is effectively ensured by the double-side cross thread connection mode, and the connection tightness among the cover plate 212, the ink box cover 2112 and the ink box body 2111 is ensured;

the embodiment also skillfully utilizes different materials of the components, thereby reducing the weight of the secondary ink box to the maximum extent while ensuring the assembly quality, prolonging the service life of the function, reducing the cost and improving the constant temperature effect.

Example 5:

on the basis of any of the above embodiments, referring to fig. 11 to 13, the nozzle maintenance device 4 includes a cleaning component 42 and a moisturizing component 43; the cleaning component 42 is positioned at the front side of the moisturizing component 43, the cleaning component 42 comprises an ink absorbing component 422, and the position of the ink absorbing component 422 corresponds to the position of the printing nozzle 23 on the bottom plate; the ink absorbing assembly 422 comprises an ink absorbing head 4221 positioned above, an adaptive adjusting device I installed below the ink absorbing head 4221 and a driving device II4224 installed below the adaptive adjusting device I, wherein the ink absorbing head 4221 is used for cleaning the bottom of the printing spray head 23 and absorbing liquid at the bottom of the printing spray head 23, the adaptive adjusting device I is used for adaptively adjusting the position of the ink absorbing head 4221 according to the position of the printing spray head 23, and the driving device II4224 is used for adjusting the heights of the adaptive adjusting device I and the ink absorbing head 4221; the moisturizing assembly 43 comprises a supporting device located at the bottom, an ink receiving tray 432 installed on the supporting device, an adaptive adjusting device II installed between the supporting device and the ink receiving tray 432, and a lifting driving mechanism installed on the supporting device and capable of driving the ink receiving tray 432 to move up and down, wherein the ink receiving tray 432 corresponds to the bottom plate, and the adaptive adjusting device II is used for adaptively adjusting the position of the ink receiving tray 432 according to the position of the bottom plate.

In this embodiment, when a printing nozzle is maintained, the printing trolley 2 is driven by the Y-axis transmission device 3 to move to the ink receiving tray 432 of the moisturizing component 43 located in the nozzle maintenance area, the ink receiving tray 432 is driven by the lifting driving mechanism to rise to a height matched with the nozzle bottom plate, the printing trolley 2 conducts ink pressing dredging on the printing nozzle above the ink receiving tray 432, the adaptive adjusting device II is arranged below the ink receiving tray 432, the position of the ink receiving tray 432 can be adaptively adjusted according to the position of the nozzle bottom plate, good attachment of the upper end of the ink receiving tray 432 and the bottom of the bottom plate is ensured, and ink splashing during ink pressing is avoided to pollute other components; after ink pressing and dredging of the printing nozzles are completed, the printing trolley moves to the position above the cleaning assembly 42 from back to front, the position of the ink absorbing assembly 422 corresponds to the longitudinal position of the printing nozzles 23 on the bottom plate, the ink absorbing head 4221 on each ink absorbing assembly 422 is used for cleaning a longitudinal row of printing nozzles, the ink absorbing head 4221 is driven by the driving device II4224 to ascend to the position matched with the bottom surface of the printing nozzle 23, when one printing nozzle is blocked and needs dredging and cleaning, one ink absorbing head 4221 can be independently lifted to clean the printing nozzle, the practicability is higher, the ink absorbing head 4221 can be adaptively adjusted according to the height, the inclination angle and the transverse position of the printing nozzle under the action of the adaptive adjusting device I, so that the ink absorbing head 4221 and the printing nozzles have good matching degree, and the cleaning effect is better; during the transportation, connect ink dish 432 to rise to the bottom surface laminating with the bottom plate, play the effect of moisturizing to the printing shower nozzle on the bottom plate for the printing shower nozzle remains moist throughout the transportation, prevents that the orifice of printing the shower nozzle from influencing normal use too futilely in the transportation.

Further, the nozzle maintenance device 4 includes a supporting plate 41 at the bottom, and the supporting plate 41 includes outer plates 411 at the left and right sides and a horizontal plate 412 installed between the two outer plates 411.

Further, the cleaning assembly 42 includes a mounting plate 421, the mounting plate 421 is located at the front side of the horizontal plate 412 and is mounted between the two outer side plates 411, and the ink absorbing assembly 422 is mounted on the mounting plate 421.

Further, the ink absorbing member 422 is mounted on the mounting plate 421 via the mounting bracket 423.

Further, referring to fig. 14, the left and right sides of the ink absorbing head 4221 are provided with flanges 42211, the distance between the two flanges 42211 matches the width of the printing head 23, the ink absorbing head 4221 is provided with a cleaning channel 42212, a first ink absorbing channel 42213 and a second ink absorbing channel 42214 respectively, which are located between the two flanges 42211, the cleaning channel 42212 is filled with a cleaning solution for flushing the bottom of the printing head 23, the first ink absorbing channel 42213 and the second ink absorbing channel 42214 are respectively connected with a negative pressure air source for respectively performing primary adsorption and secondary adsorption on the liquid at the bottom of the printing head 23, and the upper end surface of the second ink absorbing channel 42214 is higher than the upper end surface of the first ink absorbing channel 42213.

Further, referring to fig. 15, the adaptive adjustment device I includes an adjustment block 4222 located above and an adjustment seat 4223 located below and movably connected with the adjustment block 4222, the ink suction head 4221 is fixedly installed above the adjustment block 4222, and the driving device II4224 is fixedly installed below the adjustment seat 4223; a cleaning liquid groove 42221 matched with the cleaning channel 42212 is arranged on the adjusting block 4222; a negative pressure groove 42222 is formed in the adjusting block 4222, and the negative pressure groove 42222 is matched with the first ink suction channel 42213 and the second ink suction channel 42214.

Further, one end of the cleaning liquid tank 42221 is connected with a cleaning joint, and one end of the negative pressure tank 42222 is connected with a negative pressure joint.

Further, the cleaning attachment is connected to the cleaning solution storage device via a pump, which continuously pumps the cleaning solution into the cleaning channel 42212.

Further, the negative pressure connector is communicated with the gas collecting block 44, one end of the gas collecting block 44 is connected with a gas-liquid separation device, the gas-liquid separation device is connected with a fan, negative pressure airflow is formed in the gas collecting block 44 through the air suction effect of the fan, the ink absorption channel absorbs ink, cleaning liquid and particles on the surface of the printing nozzle under the negative pressure effect, the absorbed impurities fall into the gas-liquid separation device through the gas collecting block 4, the gas is pumped out through the fan, and the liquid and the particles are left in the gas-liquid separation device.

Further, as shown in fig. 16, springs I4227 are respectively connected between four corners of the lower end surface of the adjusting block 4222 and the upper end surface of the adjusting seat 4223, guide holes 42223 perpendicular to the bottom surface are respectively formed in the left side and the right side of the bottom surface of the adjusting block 4222, a pin 4225 is arranged in the guide hole 42223, the pin 4225 is fixedly connected with the adjusting seat 4223 and is arranged in the guide hole 42223, a ring groove is formed in a position, above the guide hole 42223, of the pin 4225, and a shaft retaining ring 4226 is clamped in the ring groove; the guide hole 42223 is a long round hole, the left and right sides of the adjusting block 4222 are respectively provided with a transverse hole 42224 which is perpendicular to the guide hole 42223, and the bottom of the transverse hole 42224 is provided with a spring II4228 which is abutted against the pin 4225.

In this embodiment, the ink-absorbing head 4221 is provided with a cleaning channel 42212, a first ink-absorbing channel 42213 and a second ink-absorbing channel 42214 respectively from back to front, when cleaning the printing head, the printing cart moves from back to front to above the ink-absorbing head 4221, firstly passes through the cleaning channel 42212, the cleaning channel 42212 ejects cleaning liquid upwards to clean the surface of the printing head on one hand and wet the surface of the printing head on the other hand to facilitate subsequent ink absorption, then passes through the first ink-absorbing channel 42212 and the second ink-absorbing channel 42214 in sequence, the height of the second ink-absorbing channel 42214 is higher than that of the first ink-absorbing channel 42213, then the second ink-absorbing channel 42214 is closer to the bottom surface of the printing head, so that the adsorption force of the second ink-absorbing channel 42214 is stronger, and the ink-particle mixture below the printing head is adsorbed roughly and finely adsorbed by the ink-absorbing head 4221 for one time respectively, the periphery of the spray hole of the printing spray head is ensured to be clean and tidy so as to carry out subsequent printing work.

The adjusting block 4222 is movably connected with the adjusting seat 4223 through a spring I4227, and the guide hole 42223 and the pin 4225 are arranged, so that the relative height between the adjusting block 4222 and the adjusting seat 4223 can be adjusted in a self-adaptive mode, the pin 4225 plays a role in guiding the up-and-down movement of the adjusting block 4222, and when the heights of printing nozzles in the same longitudinal row have small differences, the height positions of the ink absorbing heads 4221 can be adjusted in a self-adaptive mode more flexibly, and the height positions of the ink absorbing heads 4221 can be matched with the heights of the printing nozzles; the guide hole 42223 is a long round hole, and a spring II4228 is arranged in a transverse hole 42224 at the left side and the right side, so that the adjusting block 4222 can adjust the left direction and the right direction and the inclination angle relative to the adjusting seat 4223; the left side and the right side of the ink absorption head 4221 are provided with flanges 42211, so that the ink absorption head 4221 can be matched with the adaptive adjusting device I to perform position positioning and guiding in the left-right direction, the ink absorption head 4221 can always adapt to the left-right position of the nozzle, a relatively closed space is formed between the ink absorption head 221 and the printing nozzle to have certain vacuum degree, and meanwhile the ink absorption head 4221 can adjust the height and the inclination angle of the ink absorption head 4221 according to the position of the printing nozzle under the action of the adaptive adjusting device I, so that the ink absorption head 4221 and the printing nozzle always have good matching degree and vacuum degree, and the adsorption effect is better; furthermore, two ends of the retaining edge 42211 are provided with inclined parts, and the inclined parts are arranged to play a guiding role in the matching of the ink suction head 4221 and the printing nozzle, so that the self-adaptive adjustment of the position of the ink suction head 4221 is facilitated, and the matching degree is better.

According to the printing nozzle maintenance device provided by the embodiment, a non-contact cleaning mode is adopted, so that the problems of poor cleaning effect, normal spray hole blockage, color mixing and low cleaning efficiency caused by cleaning the printing nozzle in a contact cleaning mode in the prior art are solved; the height of each ink suction head is independently and coarsely adjusted through the driving device II4224 to adapt to the position of a vertical row of printing nozzles, and the self-adaptive adjustment device I is used for self-adaptively adjusting the position of the ink suction head 4221 according to the position of each printing nozzle in the same row, so that compared with the situation that the non-contact cleaning mode in the prior art cannot self-adapt to the height, the inclination angle and the transverse position of the printing nozzles, the ink suction device for the printing nozzles provided by the embodiment can self-adaptively adjust the position of the ink suction head 4221 according to the position of the printing nozzles, and the cleaning effect is better; the printing nozzles arranged in a longitudinal row can be cleaned and adsorbed through the ink suction head 4221 in one step, and compared with the mode that in the prior art, the ink scraping blade scrapes ink and then rotates into cleaning liquid to clean the ink and then scrapes the ink, the cleaning efficiency is higher.

Furthermore, an edge groove 42225 is arranged on the adjusting block 4222 at the periphery of the ink suction head 4221; furthermore, an opening is formed in the upper end edge of the adjusting block 4222, an ink guide groove 424 is butted below the outer portion of the opening, the end portion of the ink guide groove 424 penetrates through the ink guide tube 425, a waste ink tank is connected to the lower end of the ink guide tube 425, the side groove 42225 inclines towards the opening, waste liquid generated in the cleaning process is sprinkled into the side groove 42225 around the ink suction head 4221, the waste liquid flows into the opening along the inclined surface and falls into the ink guide groove 424, and finally flows into the waste ink tank through the ink guide tube 425, so that the waste liquid is prevented from polluting surrounding components.

Further, a sealing gasket is arranged between the ink sucking head 4221 and the adjusting block 4222; the sealing gasket enables the ink suction head 4221 and the adjusting block 4222 to be tightly attached without generating gaps, so that the sealing effect between the negative pressure groove 42222 and the ink suction channel is good, and the adsorption effect is better; furthermore, the sealing gasket is a rubber gasket.

Further, a brush hole 42215 is formed in the ink suction head 4221, the brush hole 42215 is located between the cleaning channel 42212 and the first ink suction channel 42213, a brush 42216 is arranged in the brush hole 42215, the brush 42216 is mounted on a brush holder, a brush groove 42226 matched with the brush hole 42215 is formed in the adjusting block 4222, the brush groove 42226 is communicated with the negative pressure groove 42222, and a spring III4229 is connected between the brush holder and the brush groove 42226.

In this embodiment, brush 42216 has been set up between washing passageway 42212 and first inhaling black passageway 42213, brush 2216 is soft thin brush, the printing nozzle is after the washing liquid washs, through brush arrangement of brush 2216, can be with brushing off like paper piece or other attached debris that print the shower nozzle bottom surface easily, make the clearance effect better, be connected with spring III4229 between brush seat and the brush groove 42226, make the brush can be according to the high self-adaptation regulation height of shower nozzle, the flexibility is higher, brush groove 42226 itself can play the guide effect to reciprocating of brush, the waste liquid in brush groove 42226 flows into negative pressure groove 42222, and flow out along with the waste liquid in negative pressure groove 42222 together.

Example 6:

on the basis of any of the above embodiments, referring to fig. 17, the adaptive adjustment device II includes a mounting bar 434 mounted on the supporting device, mounting brackets 433 mounted on both sides of the ink receiving tray 432, guide pins 435 mounted between the mounting bar 434 and the mounting brackets 433 and having upper ends disposed above the mounting brackets 433, and a spring IV436 sleeved outside the guide pins 435 and disposed between the mounting brackets 433 and the mounting bar 434.

In this embodiment, the height and the inclination angle of the ink receiving tray 432 can be adaptively adjusted according to the height and the inclination angle of the bottom plate under the elastic force of the spring IV436, and the guide pins 435 guide the movement of the ink receiving tray 432.

Further, the lifting driving mechanism comprises a motor 4371 installed on the transverse plate 412, an output end of the motor 4371 is connected with a lead screw 4372, the other end of the lead screw 4372 is rotatably connected with a nut 4373, the nut 4373 is installed on the supporting device, and a guiding device 438 is arranged between the supporting device and the transverse plate 412.

Further, a proximity switch for limiting a starting stroke position and an end stroke position of the ink receiving tray 432 is mounted on the horizontal plate 412, and a blocking piece for triggering the proximity switch is arranged on the supporting device.

In this embodiment, the motor 4371 drives the screw rod 4372 to rotate, so that the screw nut 4373 rises or falls relative to the screw rod 4372, thereby driving the supporting device to rise or fall, and further adjusting the height of the ink receiving tray 432; the guide device makes the lifting movement of the support device more stable, when the support device moves to the preset starting position and the preset end position in the stroke, the baffle plate triggers the proximity switch to send out a signal, and the signal is transmitted to the motor 4371, so that the stop rotation of the motor is realized to prevent the support device from exceeding the starting position or the end position of the stroke.

Further, the supporting device includes a back plate 4311 mounted on the horizontal plate 412, and inner side plates 4312 vertically mounted on left and right sides of the back plate 4311.

Further, the guiding device includes guide rails installed on the left and right sides of the horizontal plate 412 and a slider installed on the back plate 4311 and connected to the guide rails in a matching manner.

Example 7:

on the basis of any of the above embodiments, referring to fig. 19 and 20, the independent ink supply device 5 includes a main ink tank 51, an ink pump I53 and a buffer ink tank 52, the ink pump I53 is disposed between the main ink tank 51 and the buffer ink tank 52 and is respectively communicated with the main ink tank 51 and the buffer ink tank 52, a liquid level sensor is disposed in the buffer ink tank 52, and the liquid level sensor includes a high liquid level sensor and a low liquid level sensor; when the low liquid level sensor is triggered, the ink pump I53 pumps ink from the main ink tank 51 to the buffer ink tank 52, when the high liquid level sensor is triggered, the ink pump I53 stops pumping ink from the main ink tank 51 to the buffer ink tank 52, and when the low liquid level sensor is continuously triggered, the main ink tank 51 is replenished with ink or the main ink tank 51 is replaced; the buffer ink tank 52 is communicated with the ink cavity of the constant-temperature secondary ink box 21;

preferably, the independent ink supply device 5 further comprises an ink path component 54, and the buffer ink tank 52 is communicated with the ink cavity of the constant-temperature secondary ink box 21 through the ink path component 54;

preferably, the ink path assembly 54 includes an ink pump II541, a filter 542, and a degasser 543, which are connected in sequence, where the ink pump II541 is communicated with the buffer ink tank 52;

preferably, the ink path assembly 54 further includes a return valve 544, and one end of the return valve 544 is connected to the print head 23, and the other end is connected to the buffer ink tank 52.

In this embodiment, a buffer ink tank 52 is provided between the main ink tank 51 and the constant-temperature second-stage ink cartridge 21, a liquid level sensor is provided in the buffer ink tank 52, and the liquid level sensor includes a high liquid level sensor and a low liquid level sensor, and is configured to detect whether the amount of ink in the buffer ink tank 52 is at a high liquid level or a low liquid level. When the ink amount in the buffer ink tank 52 is at a low liquid level, the low liquid level sensor is triggered, the ink pump I53 will continuously pump ink from the main ink tank 51 into the buffer ink tank 52, and when the ink in the buffer ink tank 52 reaches a high liquid level, the high liquid level sensor is triggered, the ink pump I53 stops pumping ink into the buffer ink tank 52, so that the ink is prevented from overflowing; the buffer ink tank 52 is communicated with the ink cavity of the constant-temperature secondary ink box 21 and can continuously supply ink for the secondary ink box so as to ensure the normal ink jet of the printing nozzle; when the ink in the main ink tank 51 is insufficient, the ink in the buffer ink tank 52 is continuously below the low liquid level, the low liquid level sensor is continuously triggered and a low liquid level signal is reported, when the low liquid level signal is continuously for a certain time, the ink in the main ink tank 51 is insufficient, the ink cannot be replenished into the buffer ink tank 52, a worker can be reminded to replenish the ink into the main ink tank 51 or replace the main ink tank 51, and because a certain amount of ink can be supplied to the secondary ink tank 52, the worker can replace the main ink tank 51 or add the ink into the main ink tank 51, sufficient time is provided, the printer does not need to stop working, and the continuous ink supply for the constant-temperature secondary ink tank and the printing nozzle is ensured.

In this embodiment, the buffer ink tank 52 and the liquid level sensor inside the buffer ink tank are arranged such that when the low liquid level sensor is triggered, the ink pump I53 supplies ink from the main ink tank 51 to the buffer ink tank 52, when the high liquid level sensor is triggered, the ink pump I53 stops pumping ink from the main ink tank 51 to the buffer ink tank 52, and when the low liquid level sensor is continuously triggered, the main ink tank 51 is supplied with ink or replaced with ink; the surplus of the ink of the low liquid level through buffer ink tank 52 provides the operating time of adding the china ink or changing main ink tank 51 in main ink tank 51, when having solved prior art and having lacked the china ink by main ink tank in the direct mode that supplies ink to the second grade ink horn of main ink tank, because to adding the china ink or change main ink tank in the main ink tank and stop the problem that the printing progress that printer work leads to delays, guaranteed to last supplying ink's going on, improved printing efficiency.

After the ink in the buffer ink tank 52 is filtered by the filter 542 to remove impurities, the bubbles dissolved in the ink are removed through the degasser 543, then the constant-temperature secondary ink box is supplied, the printing nozzle is finally supplied for ink jet printing, the blockage of the ink path or the nozzle hole caused by the impurities in the ink is prevented, the problem of the empty spraying of the printing nozzle caused by the bubbles dissolved in the ink is also avoided, and the printing effect is better.

Further, the number of the ink path members 54 is two.

The return valve 544 is adapted to a circulating ink path, wherein ink is supplied from the buffer ink tank 52 to the constant-temperature secondary ink tank, ink in the constant-temperature secondary ink tank is supplied to the printing nozzle, ink outlets of the printing nozzles for printing the same type of ink are converged together and return to the buffer ink tank 52 under the action of gravity, so that the secondary ink tank, the printing nozzle and the buffer ink tank 52 are communicated to form the circulating ink path, a return valve 544 is arranged between the printing nozzle and the buffer ink tank 52, so that when the printing nozzle is subjected to ink pressing and dredging, a return channel is cut off, so as to smoothly press the ink, wherein the ink pressing dredging is to introduce positive pressure gas or cleaning fluid into the printing spray head, so as to press out the blockage in the jet orifice to dredge the jet orifice, if the backflow channel is not cut off during ink pressing, the gas or ink will flow to the return channel rather than out of the orifice and affect the effectiveness of the ink jet break-through.

Further, the independent ink supply device 5 further comprises a moving trolley 55, and the main ink tank 51, the ink pump I53, the buffer ink tank 52 and the ink path component 54 are mounted on the moving trolley 55.

Further, the moving trolley 55 comprises a supporting frame, a tray is mounted on the supporting frame, the main ink tank 51 is arranged in the tray, the ink tank 56 is mounted on the moving trolley 55, the ink pump I53, the buffer ink tank 52 and the ink path component 54 are mounted in the ink tank 56, and the caster 5 is mounted at the bottom of the supporting frame.

In this embodiment, the ink supply device can be placed independently of the printer by the arrangement of the movable trolley 55, and the placement position can be adjusted according to the site conditions, so that the site space is effectively utilized, the ink supply device can be packaged and transported separately during transportation, and the problems of increased transportation cost or inconvenient transportation caused by the overlarge volume of the printer are solved; meanwhile, the number of the ink supply devices can be increased according to functional requirements so as to supply various inks for the printing nozzle, so that the modularization of the ink supply devices is stronger, and the upgrading and the transformation of functions of the printer are more facilitated.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.