阅读说明：本技术 一种喷墨打印小车 (Ink-jet printing trolley ) 是由 单健 脱占贺 王家远 闫峂 单川 于 2021-06-30 设计创作，主要内容包括：本发明涉及一种喷墨打印小车,包括支撑框架,支撑框架的底部安装有喷头底板,喷头底板上安装有打印喷头；支撑框架的上端部设有头板安装装置,头板安装装置位于打印喷头的上方,头板安装装置包括若干头板组件,头板组件与支撑框架的一侧板滑动连接,头板组件包括头板,头板一端与打印喷头连接、另一端与交换机连接,交换机安装于支撑框架的后上方；支撑框架的后侧板上安装有墨水循环装置,墨水循环装置用于为打印喷头持续供墨、去除墨水中的气泡以及防止墨水的沉淀或干结。本发明具有结构设计巧妙、布局合理、体积和重量最小化、管线布置干净整洁、有效防止墨水中产生气泡或沉淀、防止墨水干结、打印精度高的有意效果。(The invention relates to an ink-jet printing trolley which comprises a supporting frame, wherein a nozzle bottom plate is arranged at the bottom of the supporting frame, and a printing nozzle is arranged on the nozzle bottom plate; the upper end of the supporting frame is provided with a head plate mounting device, the head plate mounting device is positioned above the printing nozzle and comprises a plurality of head plate assemblies, the head plate assemblies are in sliding connection with one side plate of the supporting frame and comprise head plates, one end of each head plate is connected with the printing nozzle, the other end of each head plate is connected with the switch, and the switch is mounted above the rear portion of the supporting frame; and an ink circulating device is arranged on the rear side plate of the supporting frame and is used for continuously supplying ink to the printing nozzle, removing bubbles in the ink and preventing the ink from settling or drying. The invention has the beneficial effects of ingenious structural design, reasonable layout, minimized volume and weight, clean and tidy pipeline arrangement, effective prevention of bubbles or precipitation in ink, prevention of ink drying and high printing precision.)

1. An inkjet printing dolly which characterized in that: the printing device comprises a supporting frame (1), wherein a nozzle bottom plate (5) is installed at the bottom of the supporting frame (1), and a printing nozzle (6) is installed on the nozzle bottom plate (5); the upper end of the supporting frame (1) is provided with a head plate mounting device (2), the head plate mounting device (2) is located above the printing spray head (6), the head plate mounting device (2) comprises a plurality of head plate assemblies (21), the head plate assemblies (21) are in sliding connection with one side plate of the supporting frame (1), each head plate assembly (21) comprises a head plate, one end of each head plate is connected with the printing spray head (6), the other end of each head plate is connected with a switch (7), and the switch (7) is mounted above and behind the supporting frame (1); an ink circulating device (3) is installed on the rear side plate of the supporting frame (1), and the ink circulating device (3) is used for continuously supplying ink for the printing nozzle (6), removing bubbles in the ink and preventing the ink from settling or drying.

2. An inkjet printing cart according to claim 1, wherein: guide rail (22) are installed to the upper end of a curb plate of braced frame (1), the tip of head board subassembly (21) install with guide rail (22) assorted slider (23), through slider (23) and guide rail (22) the cooperation realize head board subassembly (21) with the sliding connection of braced frame (1) curb plate.

3. An inkjet printing cart according to claim 1, wherein: the ink circulation device (3) comprises a secondary ink box (31), an ink pump (32), a filter (33) and a degassing device (34); the ink outlet of the secondary ink box (31) is communicated with the ink inlet of the printing nozzle (6) and is used for providing ink for the printing nozzle (6); the ink inlet of the ink pump (32) is communicated with the ink outlet of the printing spray head (6) and is used for providing power for the flow of the ink; the ink inlet of the filter (33) is connected with the ink outlet of the ink pump (32) and is used for filtering particles in the ink; one port of the degassing device (34) is connected with the ink outlet of the filter (33), and the other port of the degassing device is connected with the ink inlet of the secondary ink box (31) for removing bubbles in the ink.

4. An inkjet printing cart according to claim 3, wherein: an ink box support is arranged above the rear side plate of the supporting frame (1), and the secondary ink box (31) is arranged on the ink box support.

5. An inkjet printing cart according to claim 3, wherein: the ink pump is characterized in that a mounting plate (35) is arranged on a rear side plate of the supporting frame (1), and the ink pump (32), the filter (33) and the degasser (34) are mounted on the mounting plate (35) from bottom to top.

6. An inkjet printing cart according to claim 3, wherein: the ink distribution device (4) is arranged on the nozzle bottom plate (5), the ink distribution device (4) is provided with an ink supply groove (411), and the ink supply groove (411) is communicated with an ink outlet of the secondary ink box (31) and an ink inlet of the printing nozzle (6) and is used for distributing ink in the secondary ink box (31) to the printing nozzle (6); the ink shunting device (4) is also provided with a backflow groove (412), and the backflow groove (412) is communicated with an ink outlet of the printing spray head (6) and an ink inlet of the ink pump (32) and is used for containing ink which flows back to the ink pump (32) from the printing spray head (6).

7. An inkjet printing cart according to claim 6, wherein: the number of the ink supply grooves (411) and the number of the return grooves (412) are two, and the ink supply grooves and the return grooves are respectively arranged on two sides of the ink shunting device (4).

8. An inkjet printing cart according to claim 6, wherein: and a heating sheet is arranged on the outer side of the ink shunting device (4).

9. An inkjet printing carriage according to any one of claims 1 to 8 wherein: the supporting frame (1) is of an integrally formed structure.

10. An inkjet printing carriage according to any one of claims 1 to 9 wherein: the lower end part of the supporting frame (1) is provided with an angle adjusting mechanism for adjusting the horizontal angle of the spray head bottom plate (5).

Technical Field

The invention relates to the technical field of ink-jet printing equipment, in particular to an ink-jet printing trolley.

Background

The printing dolly of ink jet printer is bearing the printing shower nozzle, for the printing ink circuit subassembly that the shower nozzle supplies ink, adjust the gas circuit subassembly of negative pressure value in the ink circuit and control the circuit board etc. of ink jet printing process, many pipes and wire rods are used in the interconnect of ink circuit subassembly, gas circuit subassembly and circuit board, the direction of connection of these pipes and wire rods depends on the arrangement structure of each component, if arrange unreasonablely, pipe or wire rod cross winding when not only assembling, cause unnecessary waste, influence pleasing to the eye degree, arouse the increase of equipment fault rate, and can lead to the size of printing the dolly to increase, influence and print the precision.

In the prior art, the work of the printing nozzle is controlled by controlling the nozzle head plate through the main board, and the number of the printing nozzle and the nozzle head plate is limited because the number of the main board driving head plates is limited; when printing high accuracy or big breadth pattern, often need a great deal of printing shower nozzle to improve printing speed, consequently just need increase the volume of mainboard and increase the quantity of head board, lead to printing dolly's whole volume too big and weight overweight like this, influence the motion accuracy of printing the dolly to influenced printing quality.

In the prior art, a secondary ink box is usually arranged above a printing spray head to maintain stable ink supply, and when the number of the printing spray heads is large, the printing spray head is difficult to disassemble. Print some component arrangement structure like the inkjet printer that chinese patent CN203666125U discloses, print some component and include the shower nozzle, the shower nozzle bottom plate, the three-way valve subassembly assembly body, the ink horn assembly body, supporting component, the circuit board, tow chain and positive negative pressure conversion assembly body, the component is arranged and is "▕" -type structure, set up a shower nozzle bottom plate in arrangement structure left end bottom, install the shower nozzle on the shower nozzle bottom plate, set up the three-way valve subassembly assembly body in shower nozzle bottom plate top, the equal altitude position of three-way valve subassembly assembly body rear end sets up the ink horn assembly body, set up the circuit board in arrangement structure right-hand member position. When the number of the printing nozzles is large, a plurality of pipelines need to be led out from the secondary ink box to be communicated with the printing nozzles, and for the printing nozzles capable of printing two kinds of ink, the number of the ink pipes needs to be doubled, so that a plurality of ink pipes can be arranged between the secondary ink box and the printing nozzles, and the original data line of the printing nozzles is added, so that the arrangement of pipelines in the printing trolley is crossed and disordered, the identification and the maintenance are not convenient, and the printing trolley is not attractive; this kind of mounting means leads to printing the shower nozzle and need dismantle or adjust when arranging operating means is difficult to stretch into the inboard top of printing the shower nozzle, still need just can print the dismantlement of shower nozzle after dismantling tee bend valve module and ink horn assembly body, leads to printing the change difficulty of shower nozzle.

In the printing process of the ink-jet printer, bubbles may be mixed when ink flows through each component, and the bubbles are easy to cause empty spraying of a printing nozzle; when the pigment ink is printed, because the pigment ink contains tiny particles, precipitates are easily generated in a secondary ink box or other components, so that an ink inlet and an ink outlet of an ink tube or the components are blocked, and more seriously, a spray head is blocked, so that the loss is large. The ink circulation device in the prior art disclosed in chinese patent CN206394248U adopts a large circulation mode in which a main ink tank, a bubble removing device, a first sub ink cartridge, a nozzle, a second sub ink cartridge, and a main ink tank are connected in sequence to make ink flow circularly, and since the flow path of the ink is long and passes through various components such as pumps and valves, contamination of the ink is easily caused, which not only makes the power of the device for providing power for ink flow high and consumes much, but also makes the ink more easily contaminated or bubbles generated in the circulating flow of a long path, resulting in an unsatisfactory effect of ink circulation action, and shortens the service lives of components such as a filter; and each kind of ink on the printing trolley needs to be placed with two auxiliary ink boxes, and simultaneously needs to prevent the negative pressure gas cylinder on the printing trolley, when the printing color is more, and the ink kind increases, not only increases the volume of the printing trolley but also increases the weight of the printing trolley, for scanning type printing, the scanning movement that the printing trolley needs to make a round trip, the weight of the printing trolley will influence the motion stability of the printing trolley, thereby influencing the printing quality.

When printing ink with higher viscosity, the ink is often required to be heated to reduce the viscosity of the ink and ensure the smoothness of ink jet.

In summary, the prior art has the following problems:

1) the improper layout of components on the printing trolley can cause the oversize size of the printing trolley, the waste of pipelines and the influence on the printing precision and the attractiveness;

2) the printing nozzles are driven to work through the mainboard control head plate, the number of the nozzles is limited, and the printing trolley is easy to cause overlarge volume and influence the motion stability of the printing trolley, so that the printing precision is influenced;

3) the arrangement mode of the components in the prior art causes the spray head to be inconvenient to disassemble during replacement or maintenance;

4) the ink circulating device in the prior art causes the volume and the weight of the printing trolley to be increased, the movement stability of the trolley is influenced, the circulating distance is long, and the ink is more easily polluted or bubbles are generated;

5) the heating effect for the ink with higher viscosity is not ideal.

Disclosure of Invention

The invention aims to provide an ink-jet printing trolley 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.

An ink-jet printing trolley comprises a supporting frame, wherein a nozzle bottom plate is arranged at the bottom of the supporting frame, and a printing nozzle is arranged on the nozzle bottom plate; the upper end of the supporting frame is provided with a head plate mounting device, the head plate mounting device is positioned above the printing spray head and comprises a plurality of head plate assemblies, the head plate assemblies are connected with one side plate of the supporting frame in a sliding mode, each head plate assembly comprises a head plate, one end of each head plate is connected with the printing spray head, the other end of each head plate is connected with a switch, and the switch is mounted above and behind the supporting frame; and an ink circulating device is installed on the rear side plate of the supporting frame and used for continuously supplying ink to the printing nozzle, removing bubbles in the ink and preventing the ink from settling or drying.

Preferably, the guide rail is installed at the upper end of one side plate of the support frame, the end of the head plate assembly is provided with a sliding block matched with the guide rail, and the sliding connection between the head plate assembly and the side plate of the support frame is realized through the matching of the sliding block and the guide rail.

Preferably, the ink circulation device comprises a secondary ink box, an ink pump, a filter and a degassing device; the ink outlet of the secondary ink box is communicated with the ink inlet of the printing nozzle and is used for providing ink for the printing nozzle; the ink inlet of the ink pump is communicated with the ink outlet of the printing nozzle and is used for providing power for the flow of ink; the ink inlet of the filter is connected with the ink outlet of the ink pump and is used for filtering particles in the ink; and one port of the degassing device is connected with the ink outlet of the filter, and the other port of the degassing device is connected with the ink inlet of the secondary ink box and used for removing bubbles in the ink.

Preferably, an ink box bracket is arranged at the rear upper part of the rear side plate of the supporting frame, and the secondary ink box is arranged on the ink box bracket.

Preferably, an installation plate is arranged on a rear side plate of the supporting frame, and the ink pump, the filter and the degassing device are installed on the installation plate from bottom to top.

Preferably, an ink distributing device is arranged on the bottom plate of the nozzle, the ink distributing device is provided with an ink supply groove, and the ink supply groove is communicated with an ink outlet of the secondary ink box and an ink inlet of the printing nozzle and is used for distributing ink in the secondary ink box to the printing nozzle; the ink shunting device is also provided with a backflow groove, and the backflow groove is communicated with the ink outlet of the printing nozzle and the ink inlet of the ink pump and is used for containing ink which flows back to the ink pump from the printing nozzle.

Preferably, the number of the ink supply grooves and the number of the return grooves are two, and the ink supply grooves and the return grooves are respectively arranged on two sides of the ink shunting device.

Preferably, a heating plate is arranged on the outer side of the ink shunting device.

Preferably, the support frame is an integrally formed structure.

Preferably, an angle adjusting mechanism is arranged at the lower end part of the supporting frame and used for adjusting the horizontal angle of the spray head bottom plate.

The invention provides an ink-jet printing trolley, which has the following beneficial effects:

1) the structure design is ingenious, the layout is reasonable, the volume and the weight are minimized on the basis of containing more spray heads, and the printing precision and the printing efficiency are improved; the ink circulating device is arranged on a rear side plate of the supporting frame, and the design mode and the structural layout of each component are reasonable; the printing nozzles are not limited by the driving capability of the main board in a mainboard removing mode, and the number of the printing nozzles is maximized; the ink circulating device adopts a small circulation mode, each ink path only needs one secondary ink box, and the negative pressure device is arranged on other parts outside the printing trolley, so that the volume and the weight of the printing trolley are reduced, and the printing stability is improved; .

2) The arrangement of pipelines is clean and tidy; the head plate assembly is arranged above the printing spray head, and the head plate is directly connected with the printing spray head, so that the line is more regular; due to the arrangement of the ink shunting device, ink tubes between the secondary ink box and the printing spray head are greatly reduced, and pipelines inside the printing trolley are arranged cleanly;

3) the printing nozzle is convenient to overhaul and replace; the head plate assembly is connected with the supporting frame in a sliding mode, when the printing nozzle needs to be replaced or maintained, the head plate assembly above the printing nozzle can be pulled away, so that an operating tool can enter the position near the printing nozzle smoothly, and the printing nozzle can be maintained and replaced more conveniently;

4) the ink has short circulation path, good circulation effect, long service life and good ink heating effect; the ink circulating device adopts a small circulation mode between the secondary ink box and the printing nozzle, has short circulation flow, reduces pollution or bubbles generated in the flowing process of the ink, has good circulation effect, and prolongs the service life of elements such as a filter and the like; the ink shunting device is arranged at the side of the printing nozzle, and the heating sheet is arranged at the outer side of the ink shunting device, so that the ink before entering the printing nozzle can be heated, the ink entering the printing nozzle has better fluidity, and the smooth printing operation is more favorably carried out;

5) the angle adjustment precision of the nozzle bottom plate is high, the structure is simple, and the operation is convenient; braced frame is integrated into one piece structure, and on braced frame was all located to adjustment unit and fixed unit, relied on braced frame's rigidity and precision during the adjustment, whole deformation that can not take place dolly frame when carrying out angular adjustment to the shower nozzle bottom plate more can guarantee the precision of adjustment to make the printing precision higher.

In conclusion, the ink-jet printing trolley provided by the invention has the beneficial effects of ingenious structural design, reasonable layout, minimized volume and weight, clean and tidy pipeline arrangement, effective prevention of bubbles or precipitates generated in ink, prevention of ink drying and high printing precision.

Drawings

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

fig. 2 is a schematic perspective view of a head plate mounting device according to the present invention;

FIG. 3 is a schematic perspective view of an ink circulation device according to the present invention;

FIG. 4 is a schematic perspective view of an ink circulation device according to the present invention;

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

FIG. 6 is an exploded view of the ink distribution device of the present invention;

FIG. 7 is a schematic front view of the case according to the present invention;

FIG. 8 is a schematic view of the cross-sectional structure A-A of FIG. 7;

FIG. 9 is a rear view of the front cover of the present invention;

FIG. 10 is a schematic view of the cross-sectional structure B-B in FIG. 9;

FIG. 11 is a schematic perspective view of an angle adjustment mechanism according to the present invention;

FIG. 12 is a perspective view of a support frame according to the present invention;

FIG. 13 is a schematic perspective view of a showerhead base plate according to the present invention;

the reference numbers in the drawings are, in order: 1. the ink supply device comprises a supporting frame, 11, a protrusion, 12, a groove, 13, an adjusting hole, 14, a mounting hole, 2, a head plate mounting device, 21, a head plate assembly, 22, a guide rail, 23, a sliding block, 3, an ink circulating device, 31, a secondary ink box, 32, an ink pump, 33, a filter, 34, a degassing device, 35, a mounting plate, 351, a bending part, 352, a mounting groove, 4, an ink shunting device, 41, a box body, 411, an ink supply groove, 412, a backflow groove, 413, an ink supply channel, 42, a front cover, 421, a backflow channel, 43, a rear cover, 44, a sealing ring I, 45, a sealing ring II, 5, a nozzle bottom plate, 51, a fixing hole, 6, a printing nozzle, 7 and a switch.

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:

referring to fig. 1 to 4, an inkjet printing cart is improved in that: the printing device comprises a supporting frame 1, wherein a nozzle bottom plate 5 is arranged at the bottom of the supporting frame 1, and a printing nozzle 6 is arranged on the nozzle bottom plate 5; a head plate installation device 2 is arranged at the upper end of the support frame 1, the head plate installation device 2 is positioned above the printing nozzle 6, the head plate installation device 2 comprises a plurality of head plate assemblies 21, the head plate assemblies 21 are connected with one side plate of the support frame 1 in a sliding mode, each head plate assembly 21 comprises a head plate, one end of each head plate is connected with the printing nozzle 6, the other end of each head plate is connected with a switch 7, and the switch 7 is installed above and behind the support frame 1; an ink circulating device 3 is installed on the rear side plate of the supporting frame 1, and the ink circulating device 3 is used for continuously supplying ink to the printing nozzle 6, removing air bubbles in the ink and preventing the ink from settling or drying.

In this embodiment, the mainboard has been removed to the circuit board of control print head 6 print job in the inkjet printing dolly, print head 6 and first board connection, first board and switch 7 are connected, switch 7 is connected with the host computer, the host computer distributes print task to each first board through switch 7, first board is according to the inkjet print job of received subtask control print head 6, this kind removes the mode of mainboard ization, print head 6's quantity does not receive the restriction of main board driving capability, can be in limited space with print head 6 set up quantity maximize, printing efficiency has been improved.

The head plate assembly 21 is positioned above the printing nozzle 6, so that the printing nozzle 6 can be directly connected conveniently, the head plate assembly 21 is connected with a side plate of the support frame 1 in a sliding manner, when the printing nozzle 6 needs to be replaced or maintained, the head plate assembly 21 above the printing nozzle 6 can be pulled out, so that an operating tool can smoothly enter the vicinity of the printing nozzle 6, and the printing nozzle 6 can be detached and adjusted conveniently; the head plate is directly connected with the printing spray head 6, so that the line is more regular, and the unstable printing condition caused by the electromagnetic interference due to overlong line is avoided.

The arrangement of the ink circulating device 3 can remove air bubbles in the ink entering the printing nozzle 6, prevent the ink from precipitating or drying out, and save the replacement and maintenance cost caused by blocking components.

Shower nozzle bottom plate 5 is installed in braced frame 1's bottom, print shower nozzle 6 and install on shower nozzle bottom plate 5, the position of printing shower nozzle 6 top in braced frame 1 is installed to first board installation device 2, switch 7 is installed in braced frame 1's back top, ink circulating device 3 is installed on braced frame 1's posterior lateral plate, the design and the structural layout of each components and parts are reasonable, make print the dolly and will print the volume and the weight minimizing of dolly on the basis that holds more print shower nozzles 6, improve and print the precision and print efficiency.

Example 2:

on the basis of embodiment 1, referring to fig. 2, a guide rail 22 is installed at an upper end of one side plate of the support frame 1, a slider 23 matched with the guide rail 22 is installed at an end of the head plate assembly 21, and the head plate assembly 21 is slidably connected with the side plate of the support frame 1 through the matching of the slider 23 and the guide rail 22.

In this embodiment, the connection mode of the head plate assembly 21 and the support frame 1 is simple, and the head plate assembly 21 is easily operated, so that the printing nozzle 6 can be more conveniently replaced and maintained.

Further, the guide rail 22 is disposed at the upper end of the front side plate of the support frame 1, and the arrangement of the head plate assembly 21 matches the arrangement of the print heads 6 on the head bottom plate 5.

Example 3:

on the basis of embodiment 1 or 2, referring to fig. 3 and 4, the ink circulation device 3 includes a secondary ink tank 31, an ink pump 32, a filter 33, and a degassing device 34; the ink outlet of the secondary ink box 31 is communicated with the ink inlet of the printing nozzle 6 and is used for providing ink for the printing nozzle 6; the ink inlet of the ink pump 32 is communicated with the ink outlet of the printing nozzle 6 and is used for providing power for the flow of ink; the ink inlet of the filter 33 is connected with the ink outlet of the ink pump 32 and is used for filtering particles in the ink; one port of the degassing device 34 is connected to the ink outlet of the filter 33, and the other port is connected to the ink inlet of the secondary ink tank 31, for removing bubbles in the ink.

In this embodiment, the circulation flow of the ink circulation device 3 is: the ink flows out from the main ink tank, flows into the ink inlet of the secondary ink box 31 through components such as a pump and a filter, and flows into the printing nozzle 6 from the ink outlet of the secondary ink box 31, the printing nozzle 6 performs ink jet work and circulates other ink at the same time, the circulated ink circulates into the secondary ink box through the ink pump 32, the filter 33 and the degasser 34, so that the ink forms small circulation among the secondary ink box 31, the printing nozzle 6, the ink pump 32, the filter 33 and the degasser 34, the problem that the pigment ink blocks an ink path due to sediment generated in the secondary ink box or other components is solved, compared with the prior art, each ink path only needs one secondary ink box 31, the degasser 34 is connected with a negative pressure device, the negative pressure device is used for providing a negative pressure value for the degasser 34 so as to remove bubbles in the ink, the negative pressure device can be installed on other parts outside the printing trolley, the volume and the weight of the printing trolley are reduced, so that the printing stability is improved, the ink circulation flow is short, the pollution or bubbles generated in the flowing process of the ink are reduced, and the service life of elements such as a filter is prolonged.

Further, an ink box bracket is arranged at the rear upper part of the rear side plate of the supporting frame 1, and the secondary ink box 31 is arranged on the ink box bracket.

Further, an installation plate 35 is provided on a rear side plate of the support frame 1, and the ink pump 32, the filter 33, and the degasser 34 are installed on the installation plate 35 from bottom to top.

Further, referring to fig. 5, a bent portion 351 is provided at an upper end of the mounting plate 35, and a mounting groove 352 is provided on the bent portion 351, wherein the mounting groove 352 is used for limiting and fixing the degassing device 34.

Furthermore, mounting holes are formed in the bending portion 351 of the mounting plate 35 on two sides of the mounting groove 352, and the mounting hole is connected and fixed through a fixing sheet to fix the degassing device 34 in the mounting groove 352, or a binding belt is used to pass through the mounting hole to fix the degassing device 34 in the mounting groove 352.

Further, the mounting plate 35 is a hollow thin plate, so that the weight can be reduced, and heat dissipation of elements such as an ink pump is facilitated.

Example 4:

on the basis of embodiment 3, referring to fig. 6 and 7, an ink diversion device 4 is disposed on the head bottom plate 5, the ink diversion device 4 has an ink supply tank 411, and the ink supply tank 411 is communicated with an ink outlet of the secondary ink cartridge 31 and an ink inlet of the printing head 6, and is used for diverting ink in the secondary ink cartridge 31 to the printing head 6; the ink flow distribution device 4 further has a return channel 412, and the return channel 412 is communicated with the ink outlet of the print head 6 and the ink inlet of the ink pump 32, and is configured to receive the ink that returns from the print head 6 to the ink pump 32.

In this embodiment, when the ink shunting device 4 is used, the ink tubes led out from the ink outlet of the secondary ink cartridge 31 are connected to the ink shunting device 4, so that the ink tubes are communicated with the ink supply tank 411, and a plurality of ink tubes led out from the ink shunting device 4 are connected to the ink inlet of the printing nozzle 6 adjacent to the ink shunting device 4 on the nozzle bottom plate 5, so as to perform an ink supply shunting function, wherein the ink in the printing nozzle 6 except for the ink used for jet printing is communicated with the return tank 412 of the ink shunting device 4 through the ink outlet of the printing nozzle, so that the ink in the printing nozzle 6 is recovered and returned to the secondary ink cartridge 31 through the ink pump 32, the filter 33 and the degassing device 34. The arrangement of the ink shunting device 4 ensures that when the ink is connected to the printing nozzles 6 from the secondary ink box 31, the ink does not need to be connected to the ink inlet of each printing nozzle 6 from the ink outlet of the secondary ink box 31, only one or two ink pipes are led out from the secondary ink box 31 to be connected to the ink shunting device 4, similarly, the ink flowing back from the printing nozzles 6 does not need to be connected with each ink outlet to the ink pump 32, only the ink outlet of the printing nozzle 6 is connected with the ink shunting device 4, and one ink pipe is led out from the ink shunting device 4 to be connected with the ink pump 32, the ink shunting device 4 and the printing nozzle 6 are arranged on the nozzle bottom plate 5 and are adjacent to each other, so that the ink pipes connected between the ink shunting device 4 and the printing nozzle 6 are shorter and have the height only slightly higher than the height of the printing nozzle or the ink shunting device, and the ink pipes between the secondary ink box 31 and the printing nozzle 6 are greatly reduced, the pipeline arrangement in the printing trolley is enabled to be tidier.

Further, the ink flow distribution device 4 includes a box 41 located in the middle, and the ink supply tank 411 and the return tank 412 are disposed on the side of the box 41 up and down.

Furthermore, the box body 41 is a thin cuboid and a long thin structure, so that the ink shunting device 4 can not only meet the shunting and backflow effects of a row of printing nozzles, but also save space and make the structure more compact.

Further, the ink supply tank 411 is disposed above the return tank 412.

Further, the number of the ink supply tank 411 and the number of the return tank 412 are two, and the two ink supply tanks and the return tank are respectively disposed on two sides of the ink flow dividing device 4.

Further, the front and rear sides of the box 41 are respectively sealed and covered with a front cover 42 and a rear cover 43, and the front cover 42 and the rear cover 43 are covered with the box 41 to make the ink supply tank 411 and the return tank 412 form four independent ink chambers.

Further, a sealing ring I44 is respectively disposed between the periphery of the ink supply tank 411 and the front cover 42 and the rear cover 43, and a sealing ring II45 is respectively disposed between the periphery of the return tank 412 and the front cover 42 and the rear cover 43.

Furthermore, grooves for accommodating the sealing rings I44 and II45 are formed on the box body 41.

Further, the ink shunting device 4 is arranged between the two rows of printing nozzles 6. Because the both sides of ink diverging device 4 all have reposition of redundant personnel and backward flow function, set up and to divide and flow back for the printing shower nozzle 6 of both sides respectively between two rows of printing shower nozzles 6, save space more.

Further, referring to fig. 8, an ink supply channel 413 is disposed on the box 41, one end of the ink supply channel being communicated with the ink supply slot 411, and the other end of the ink supply channel penetrating through the upper end surface of the box 41.

Further, the upper end surface of the box body 41 is provided with a joint I matched with the ink supply channel 413.

Further, the joint I and the box body 41 are integrally formed. The integrated structure can effectively prevent ink leakage at the interface of the joint I and the box body 41, and prolong the service life of the ink shunting device 4.

Further, as shown in fig. 9 and 10, the front cover 42 and the rear cover 43 are respectively provided with a backflow passage 421, one end of which is communicated with the backflow groove 412, and the other end of which penetrates through the upper end surfaces of the front cover 42 and the rear cover 43.

Furthermore, the upper end surfaces of the front cover 42 and the rear cover 43 are respectively provided with a joint II matched with the return channel 421.

Further, the joint II is integrally formed with the front cover 42, and the joint II is integrally formed with the rear cover 43. The integrated into one piece structure can effectively prevent to connect II and the ink leakage problem of protecgulum 42 and back 43 kneck, prolongs ink diverging device's life.

Example 5:

in addition to embodiment 4, a heating plate is provided outside the ink flow dividing device 4.

In this embodiment, when printing the higher ink of viscosity, because ink diverging device 4 sets up in near printing shower nozzle 6, the setting of heating plate can heat the ink that gets into before printing shower nozzle 6 for the ink mobility that gets into and print shower nozzle 6 is better, more does benefit to going on smoothly of print jobs.

Example 6:

on the basis of any one of the above embodiments, the supporting frame 1 is an integrally formed structure.

Further, as shown in fig. 11 to 13, an angle adjusting mechanism is provided at a lower end of the supporting frame 1 for adjusting a horizontal angle of the head base plate 5.

Further, the angle adjusting mechanism comprises an adjusting unit and a fixing unit; the adjusting unit is arranged in an accommodating frame at the lower end part of the integrally formed supporting frame 1, and comprises a bulge 11 positioned on a rear side plate of the accommodating frame and adjusting holes 13 positioned on the left side and the right side of a front side plate of the accommodating frame, wherein the bulge 11 is semicircular, a semicircular arc part of the bulge 11 abuts against the rear end surface of the nozzle bottom plate 5, adjusting nails are arranged in the adjusting holes 13, and the adjusting nails penetrate through the adjusting holes 13 and abut against the left side and the right side of the front end surface of the nozzle bottom plate 5; the fixing unit comprises mounting holes 14 formed in the end portions of the left side and the right side of the containing frame, locking nails are arranged in the mounting holes 14, fixing holes matched with the locking nails are formed in the upper end face of the spray head bottom plate 5, and the locking nails penetrate through the mounting holes 14 and are connected with the fixing holes to fix the position of the spray head bottom plate 5.

In this embodiment, during the use, arrange shower nozzle bottom plate 5 in the holding frame, mounting hole 14 is a plurality of and is located the side tip of holding frame, can realize the coarse fixed of shower nozzle bottom plate 5 position, pass mounting hole 14 with shower nozzle bottom plate 5 and be connected fixedly but not locking, so that shower nozzle bottom plate 5 can carry out the micromotion, twist into regulation hole 13 with the regulation nail and butt on shower nozzle bottom plate 5, stretch out the length that regulation hole 13 was stretched out to the regulation nail through the adjustment and make shower nozzle bottom plate 5 use arch 11 to rotate in order to realize the adjustment of the horizontal angle of shower nozzle bottom plate 5 as the center, screw up the locking nail after the adjustment finishes, in order to lock the relative position of shower nozzle bottom plate 5 and holding frame and fix. This device simple structure, convenient operation, and braced frame 1 is integrated into one piece structure, compare in prior art by the backplate, control the dolly frame that the curb plate equipment formed, the rigidity is stronger, on braced frame 1 was all located to angular adjustment mechanism and fixed establishment, rely on braced frame 1's rigidity and precision during the adjustment, wholly can not take place the deformation of dolly frame when carrying out angular adjustment to shower nozzle bottom plate 5, more can guarantee the precision of adjustment to make the printing precision higher.

Further, a groove 12 is formed in the bottom end of the supporting frame 1, and the nozzle bottom plate 5 is installed in the groove 12.

Further, the depth of the groove 12 is not greater than the thickness of the head base plate 5. Because the scanning speed of printing the dolly is very fast among the printing process, in order to reduce the offset of the position that the ink droplet is on from the shower nozzle blowout back to falling to the printing medium, and reduce the influence of the windage that produces between dolly bottom and the printing medium among the printing dolly motion process to the ink droplet landing, it is very close to print the distance setting between shower nozzle and the printing medium, generally 1 ~ 2mm, consequently, the degree of depth of recess 12 is not more than the thickness of shower nozzle bottom plate 5, make the lower terminal surface of shower nozzle bottom plate 5 be not less than the lower terminal surface of braced frame 1, with the distance between assurance printing shower nozzle and the printing medium.

Furthermore, the width of the groove 12 is larger than that of the nozzle bottom plate 5, so that the nozzle bottom plate 5 has a certain moving space in the groove 12, which is convenient for the angle adjustment of the nozzle bottom plate 5.

Furthermore, the mounting hole 14 is a long round hole or a round hole with a diameter larger than that of the locking nail, and can provide a movable space for the locking nail.

It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or otherwise described herein.

Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways, such as by rotating it 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.

In the foregoing detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here.

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.