阅读说明：本技术 一种针式打印机打印头 (Printing head of stylus printer ) 是由 马桂明 于 2019-10-29 设计创作，主要内容包括：本发明涉及打印设备技术领域,且公开了一种针式打印机打印头,包括打印箱,所述打印箱的内部开设有安装孔,所述打印箱的内部且与安装孔配合安装有放射状定位压板,所述放射状定位压板的下方且位于安装孔内部设置有电磁线圈一,所述电磁线圈一的上方设置有衔铁,所述衔铁的一侧固定安装有打印针。相较于现有技术来说,本申请技术方案采用可调节磁力大小的电磁线圈一对打印针进行引导的方式,通过滑动电阻控制电磁线圈一内通过电流大小,控制其磁力大小,水囊直接作用于衔铁控制打印针的下行位移量,对于可控磁力变化,使得针式打印机在打印多联打印纸的情况下,保证打印针对多联打印纸打印效果。(The invention relates to the technical field of printing equipment and discloses a printing head of a stylus printer, which comprises a printing box, wherein a mounting hole is formed in the printing box, a radial positioning pressing plate is arranged in the printing box and matched with the mounting hole, a first electromagnetic coil is arranged below the radial positioning pressing plate and in the mounting hole, an armature is arranged above the first electromagnetic coil, and a printing needle is fixedly arranged on one side of the armature. Compared with the prior art, the mode that this application technical scheme adopted a pair of printing needle of solenoid of adjustable magnetic force size to guide, through the electric current size in the slide resistance control solenoid, control its magnetic force size, the water pocket direct action is in armature control printing needle's the volume of moving down displacement, to controllable magnetic force change for needle printer is printing under the condition of the many printing paper that ally oneself with, guarantees to print to the printing paper that ally oneself with and prints the printing effect of beating.)

1. The utility model provides a printer head of stylus printer, includes printing box (1), mounting hole (2) have been seted up to the inside of printing box (1), the inside of printing box (1) and install radial positioning pressure plate (3) with mounting hole (2) cooperation, the below of radial positioning pressure plate (3) just is located inside solenoid (6) that is provided with of mounting hole (2), the top of solenoid (6) is provided with armature (4), one side fixed mounting of armature (4) has printing needle (7), the surface movable mounting of printing needle (7) has deflector (8), set gradually elasticity typewriter ribbon (9), typewriter ribbon baffle (10), beat printing paper (11), reel (12) under printing needle (7), its characterized in that: the lower surface of radial positioning pressure plate (3) is provided with fixed case (13), the top fixed mounting of fixed case (13) inner chamber has solenoid two (14), the middle part fixed mounting of fixed case (13) inner chamber bottom has solenoid one (6), the bottom of fixed case (13) inner chamber just is located solenoid one (6) peripheral fixed mounting has water pocket (15), displacement groove (16) are seted up to one side of fixed case (13).

2. A printhead according to claim 1, wherein: the first electromagnetic coil (6) is connected with the sliding resistor in series.

3. A printhead according to claim 1, wherein: the first electromagnetic coil (6) and the second electromagnetic coil (14) are installed in an up-down symmetrical mode, and the first electromagnetic coil (6) and the second electromagnetic coil (14) are switched on and off in a staggered mode.

4. A printhead according to claim 1, wherein: the outer wall of the water bag (15) is made of non-conductive silica gel, and the width of the displacement groove (16) is matched with the width of the printing needle (7).

5. A printhead according to claim 1, wherein: the water bag (15) is in an annular cylinder shape, and the electromagnetic coil I (6) is located in an annular hole of the water bag (15) and is in contact with the inner surface of the water bag (15).

Technical Field

The invention relates to the technical field of printing equipment, in particular to a printing head of a stylus printer.

Background

The printing needle is a special printer, and has very big difference with inkjet, laser printer, and the impact printer beats carbon paper through many printing needles in beating printer head to form the typeface, and in use for can select the antithetical couplet paper as required, the antithetical couplet paper that generally uses has bigeminal, trigeminy, quadruplex, six antithetical couplet paper, and the disposable completion of printing of antithetical couplet paper only can accomplish fast.

Referring to the attached drawing 1 of the specification, according to the existing print head of the stylus printer, when the stylus printer starts to work, the electromagnetic coil I6 generates magnetism after current is introduced, the armature 4 at the tail of the print needle 7 is excited to press the pressure spring 5 downwards to move towards the electromagnetic coil I6, meanwhile, the print needle 7 is driven to pass through the ink ribbon baffle 10 along the multilayer guide plate 8 and impact towards the elastic ink ribbon 9, the elastic ink ribbon 9 and the printing paper 11 are pressed towards the winding drum 12, at this time, ink on the elastic ink ribbon 9 is impacted and permeated onto the printing paper 11 by the impact of the print needle 7, a small round dot is left, when the current in the electromagnetic coil I6 disappears, the print needle 7 is reset to the original state by the pressure spring 5, one-time printing action is.

The existing needle printer printing head has the following defects:

firstly, after the stylus printer works, due to abrasion of a needle head of the printing needle 7 and impact vibration of the printing needle 7 on the winding drum 12 for a long time, the distance between the printing needle 7 and the winding drum 12 can be lengthened, the impact stroke of the printing needle 7 is insufficient, the definition of ink dots printed on the printing paper 11 is affected, and characters cannot be printed on the printing paper 11, meanwhile, the stylus printer can print multi-piece printing paper 11, the pressure of the printing needle 7 with the unchanged stroke on the multi-piece printing paper 11 is strengthened, the ink dots printed on the printing paper 11 are too thick, the printed characters are black dots and cannot be seen clearly, and the printing needle 7 is easy to break due to the too high pressure on the printing paper 11.

Secondly, in the working process of the stylus printer, the hitting times of the printing needle 7 can exceed hundreds of millions, the use strength of the pressure spring 5 is too large, the pressure spring 5 is prone to elastic failure and cannot reset the printing needle 7, and the pressure spring 5 cannot guide the printing needle 7 to hit up and down to form ink dots on the printing paper 11, so that the stylus printer fails.

Thirdly, pressure spring 5 can produce and rock about pushing down and the in-process that resets, drives armature 4 and rocks about, cuts the line 17 of magnetic induction that solenoid 6 produced, because print box 1, radial positioning pressing plate 3 all are the higher electric conductor of intensity, pressure spring 5 can form the route with print pin 7, the inside of print pin 7 can produce the electric current, print pin 7 after the circular telegram can generate heat, lead to print pin 7 to become fragile, very easily take place the rupture at the in-process of hitting.

Fourthly, the first electromagnetic coil 6 can generate heat after current is introduced, after the printer works for a long time, the printing head is heated by conduction, the printing needle 7 in the printing head is influenced, the needle printer is easy to break in the striking process, the operation of the needle printer needs to be stopped, and the printing head works after being cooled to influence the working efficiency of the needle printer.

Disclosure of Invention

The invention provides a printing head of a needle printer, which has the advantages of being capable of adjusting the printing stroke of a printing needle, prolonging the service life of the printing needle and prolonging the printing working time, and solves the problems that the stroke of the printing needle cannot be adjusted, the printing needle is easy to break, the printing head is easy to generate heat, and the printing needle can cut magnetic induction lines to be electrified due to the swinging of a spring.

The invention provides the following technical scheme: a printing head of a needle printer comprises a printing box, wherein a mounting hole is formed in the printing box, a radial positioning pressing plate is installed in the printing box and matched with the mounting hole, a first electromagnetic coil is arranged below the radial positioning pressing plate and inside the mounting hole, an armature is arranged above the first electromagnetic coil, a printing needle is fixedly installed on one side of the armature, a guide plate is movably installed on the outer surface of the printing needle, an elastic ribbon, a ribbon baffle, printing paper and a winding drum are sequentially arranged under the printing needle, a fixed box is arranged on the lower surface of the radial positioning pressing plate, a second electromagnetic coil is fixedly installed at the top of an inner cavity of the fixed box, the first electromagnetic coil is fixedly installed in the middle of the bottom of the inner cavity of the fixed box, and a water bag is fixedly installed at the bottom of the inner cavity of the fixed box and on, and one side of the fixed box is provided with a displacement groove.

Preferably, the first electromagnetic coil is connected in series with a sliding resistor.

Preferably, the first electromagnetic coil and the second electromagnetic coil are installed up and down symmetrically, and the first electromagnetic coil and the second electromagnetic coil are switched on and off in a staggered mode.

Preferably, the outer wall of the water bag is made of non-conductive silica gel, and the width of the displacement groove is matched with the width of the printing needle.

Preferably, the water sac is in an annular cylinder, and the first electromagnetic coil is located in an annular hole of the water sac and is in contact with the inner surface of the water sac.

The invention has the following beneficial effects:

compared with the prior art, the mode that this application technical scheme adopted a pair of printing needle of solenoid of adjustable magnetic force size to guide, through the electric current size in the slide resistance control solenoid, control its magnetic force size, the water pocket direct action is in armature control printing needle's the volume of moving down displacement, to controllable magnetic force change for needle printer is printing under the condition of the many printing paper that ally oneself with, guarantees to print to the printing paper that ally oneself with and prints the printing effect of beating.

Compared with the prior art, the technical scheme of the application adopts the guide mode that the first electromagnetic coil is matched with the second electromagnetic coil, and the armature is directly acted by the staggered power on and power off control of the first electromagnetic coil and the second electromagnetic coil, so that the printing needle can effectively strike printing paper, and the problem of failure of the printing needle due to up-down striking is avoided due to the change of the control mode.

Compare in prior art, this application technical scheme adopts the water pocket to prescribe a limit to armature down position, prescribes a limit to displacement about the printing needle through the displacement groove, and armature displacement direct action takes place to deform in the water pocket downwards for armature can not take place to rock about, and the further separation of the water pocket of non-conductive silica gel material preparation has armature can form the condition of route, and further the printing needle that the magnetism electricity generation phenomenon that prevents to lead to generates heat the problem of breaking easily.

Compare in prior art, this application technical scheme adopts closed mounting means, through the cooperation installation of fixed case and water pocket, the water pocket outward appearance is heat conducting material's silica gel, the heat that solenoid two circular telegrams produced is absorbed by the water pocket through the conduction of fixed case, the heat that solenoid one circular telegrams produced is direct to be absorbed by the water pocket for the printing needle is hit the in-process at a high speed, can not be too fast because of beating the printer head and generate heat, causes the printing needle to break easily, and need constantly to shut down the process of cooling.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the movement of a cutting magnetic induction line of a prior art structure;

FIG. 3 is a schematic view of the assembly structure of the present invention;

FIG. 4 is a schematic view of a down-stroke configuration of the present invention;

FIG. 5 is a schematic view of an upward return configuration of the present invention;

FIG. 6 is a schematic view of the structure of the mounting sleeve of the present invention;

FIG. 7 is a schematic view of the structure of the water bladder of the present invention;

FIG. 8 is a schematic diagram of a control circuit for the solenoid of the present invention.

In the figure: 1. a print box; 2. mounting holes; 3. a radial positioning pressing plate; 4. an armature; 5. a pressure spring; 6. a first electromagnetic coil; 7. printing needle; 8. a guide plate; 9. an elastic ribbon; 10. a ribbon baffle; 11. printing paper; 12. a reel; 13. a fixed box; 14. a second electromagnetic coil; 15. a water bladder; 16. a displacement slot; 17. and (4) magnetic induction lines.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 3-8, a print head of a stylus printer comprises a print box 1, a mounting hole 2 is formed in the print box 1, a radial positioning pressing plate 3 is installed in the print box 1 and is matched with the mounting hole 2, a first electromagnetic coil 6 is arranged below the radial positioning pressing plate 3 and inside the mounting hole 2, an armature 4 is arranged above the first electromagnetic coil 6, a printing needle 7 is fixedly installed on one side of the armature 4, a guide plate 8 is movably installed on the outer surface of the printing needle 7, an elastic ribbon 9, a ribbon baffle 10, printing paper 11 and a winding drum 12 are sequentially arranged right below the printing needle 7, a fixed box 13 is arranged on the lower surface of the radial positioning pressing plate 3, a second electromagnetic coil 14 is fixedly installed on the top of an inner cavity of the fixed box 13, the first electromagnetic coil 6 is fixedly installed in the middle of the bottom of the inner cavity of the fixed box 13, a water bag 15 is fixedly installed at the periphery, one side of the fixed box 13 is provided with a displacement groove 16.

Wherein, solenoid 6 is established ties with sliding resistor, sliding resistor through establishing ties with solenoid 6, can control the electric current size through solenoid 6, thereby control circular telegram back solenoid 6 produces magnetic force's size, when having solved printing manifold and having good luck the typeface, and printing needle 7 printing pressure is great, the problem of easy emergence rupture, needle printer has been guaranteed to print the printing effect of in-process, the life of printing needle 7 when printing manifold and having good luck 11 has been promoted.

Wherein, the symmetry is installed about solenoid 6 and solenoid two 14, and the crisscross circular telegram of switching on and shutting down of solenoid 6 and solenoid two 14, through crisscross circular telegram solenoid 6 and solenoid two 14, can realize that print needle 7 reciprocates the process of hitting, it resets to have solved long-time use pressure spring 5 to hit to beat the back, elastic failure takes place easily, cause to print inefficacy, can't carry out the problem of printing, guaranteed that print needle 7 can accomplish the printing process of every time, needle printer's printing effect has been promoted.

Wherein, the outer wall of water pocket 15 is that non-conductive silica gel makes, the width of displacement groove 16 and the width cooperation of print needle 7, through 15 materials and the restriction of displacement groove 16 width to water pocket, can't form the route during print needle 7 cutting magnetism is felt line 17, the inside unable electric current that forms of print needle 7, displacement groove 16 restricts the rotation of print needle 7, make it can't cut the magnetism felt line that solenoid 6 formed, the problem of easy rupture after having solved print needle 7 inside through the electric current generates heat has been promoted print needle 7's life.

Wherein, water pocket 15 is the annular cylinder, solenoid 6 is located the annular hole of water pocket 15, with the internal surface contact of water pocket 15, through solenoid 6 and solenoid two 14 of fixed mounting in fixed box 13 inside, the great amount of heat that produces after solenoid 6 and solenoid two 14 circular telegram, absorbed by the inside liquid of water pocket 15, solved in long-time use, solenoid 6 can produce a large amount of heat, make and beat printer head heat, thereby make the printing needle heat to hit and beat and break easily, need the problem that continuous shut down cooled down, the speed that the printer head temperature rose has been reduced, the continuous printing time has been promoted, the printing efficiency of pin printer has been improved.

The working principle of the beating of the printing needle is as follows:

after the needle printer is powered on, the second electromagnetic coil 14 is firstly powered on, the armature 4 is excited to move upwards, the printing needle 7 is separated from the elastic ink ribbon 9, at the moment, printing paper 11 is put in, the sliding resistance is adjusted to enable the magnetic force generated after the first electromagnetic coil 6 is powered on to be proper, after the printing paper is prepared to be perfect, the second electromagnetic coil 14 is powered off, the first electromagnetic coil 6 is powered on, the armature 4 at the tail part of the printing needle 7 is driven to press the water sac 15 to move towards the first electromagnetic coil 6, the printing needle 7 is driven to impact the elastic ink ribbon 9 through the ink ribbon baffle plate 10 along the multi-layer guide plate 8, the elastic ink ribbon 9 and the printing paper 11 are pressed towards the winding drum 12, at the moment, ink on the elastic ink ribbon 9 is impacted by the printing needle 7 to permeate the printing paper 11, a small round dot is left, the instant when the, accomplish once and print the action, when printing and ally oneself with printing paper 11 more, adjust sliding resistance, make the inside electric current that passes through of 6 solenoid reduce, magnetic force reduces, and the gravitation to armature 4 diminishes, is carrying out the in-process of printing needle 7 striking action, receives the influence of the deformation resistance of water pocket 15, and the printing needle 7 is to the displacement volume down and is reduced, makes and print more and ally oneself with printing paper 11 and can print clearly.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.