CN210309542U

CN210309542U - Accurate ink supply system

Info

Publication number: CN210309542U
Application number: CN201920275682.5U
Authority: CN
Inventors: 项建龙; 卢伟毅; 沈世杰; 葛赛均
Original assignee: Hangzhou Cron Machinery & Electronics Co ltd
Current assignee: Hangzhou Cron Machinery & Electronics Co ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-04-14
Anticipated expiration: 2029-03-05

Abstract

The utility model relates to an ink supply technical field of printing machine, concretely relates to accurate ink supply system. The method comprises the following steps: the automatic ink adding system is connected with the centralized ink conveying system through a pipeline and is used for supplying ink to the centralized ink conveying system; the upper stream of the centralized ink conveying system is connected with the automatic ink adding system, and the lower stream of the centralized ink conveying system is connected with the full-digital ink supply system and is used for conveying the ink to the full-digital ink supply system in a centralized and quantitative manner; the upper stream of the all-digital ink supply system is connected with the centralized ink conveying system through a pipeline and is used for uniformly and stably supplying the ink to the printing machine; the control system is electrically connected with the automatic ink adding system, the centralized ink conveying system and the full digital ink supply system and is used for controlling the smooth operation of the whole system; the automatic ink adding system is provided with an ink supply pump, the ink supply pump is provided with an ink inlet and an ink outlet, and the ink outlet is connected with the centralized ink conveying system through a pipeline. The ink supply system can supply ink in a close-distance mode to provide accurate, uniform and stable ink supply for printing.

Description

Accurate ink supply system

Technical Field

The utility model relates to an ink supply technical field of printing machine, concretely relates to accurate ink supply system.

Background

Problems with conventional printing: the printing preparation time is long, and the efficiency is influenced; the printing quality is difficult to reach the standard, and the color consistency is difficult to control; the waste of ink and paper is great when the machine is started for preparation; and lack of skilled technicians.

As is known, an ink supply system is a major important device in the printing industry, and is mainly used for monitoring the ink amount in an ink fountain of a printing machine, and when the ink in the ink fountain of the printing machine reaches a lowest line, the system can give out an alarm to prompt ink adding, so that the automatic control of an ink supply device of the printing machine is realized. In the printing process, the control of ink is an indispensable link for obtaining high-quality printed matters. If too little ink in the ink box can cause ink break in the printing process, the quality of a printed product is influenced, and a series of preparation work performed by restarting can also cause waste of time, ink, paper and the like, so that the monitoring of the minimum amount of ink in the ink fountain is necessary. If too much ink is used, the ink will be oxidized and skinned, and if too little ink is used, the quality of the printed product will be affected.

The ink supply system can monitor the ink amount in the ink fountain and realize automatic ink supply, and the ink amount in the ink fountain is ensured to be minimum on the premise of ensuring the optimal printing effect. Thereby realizing the purposes of improving the quality of printed products, saving printing ink and reducing labor intensity. The ink supply system has the important function, but the existing ink supply system has low digitization degree, and a plurality of places still need manual intervention, so that the production efficiency is not improved a lot, and a series of trouble problems such as ink leakage, inaccurate detection, pipeline blockage, low ink supply precision and the like are caused.

Therefore, there is a need for an improved ink supply system that improves upon the existing problems with a completely new ink supply system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, and providing an accurate ink supply system.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

an accurate ink supply system comprising:

the automatic ink adding system is connected with the centralized ink conveying system through a pipeline and is used for supplying ink to the centralized ink conveying system;

the upper stream of the centralized ink conveying system is connected with the automatic ink adding system, and the lower stream of the centralized ink conveying system is connected with the full-digital ink supply system and is used for conveying the ink to the full-digital ink supply system in a centralized and quantitative manner;

the upper stream of the all-digital ink supply system is connected with the centralized ink conveying system through a pipeline and is used for uniformly and stably supplying the ink to the printing machine;

the control system is electrically connected with the automatic ink adding system, the centralized ink conveying system and the full digital ink supply system and is used for controlling the smooth operation of the whole system;

the automatic ink adding system is provided with an ink supply pump, the ink supply pump is provided with an ink inlet of the ink pump and an ink outlet of the ink pump, and the ink outlet of the ink pump is connected with the centralized ink conveying system through a pipeline.

Preferably, add the black system including adding the china ink jar, add the china ink jar and advance the mouth through the china ink pump and provide printing ink for supplying the china ink pump, add the china ink jar and include the tube-shape add the china ink jar body, add the internal upper portion of china ink jar and set up with the cooperation of the internal wall of china ink lid with adding the china ink jar, add the china ink jar body bottom and be equipped with the bottom plate, set up on the bottom plate and add the china ink mouth, it has the piece of tearing open to cover with the china ink mouth outward, adds the cooperation of china ink lid bottom and bottom plate top.

Preferably, the ink supply pump is an injection type ink supply pump and comprises an injection pump body, an injection cavity used for injecting ink is arranged in the injection pump body, the injection cavity is provided with an injection port which is arranged in a matched mode, the injection pump body is provided with an ink pump ink inlet and an ink pump ink outlet which are communicated with the injection cavity, the injection port is provided with a first sealing plug and a second sealing plug, a cavity is arranged between the first sealing plug and the second sealing plug, the injection pump body is provided with an ink pump leakage channel communicated with the cavity, an ink pump ink inlet channel is arranged between the ink pump ink inlet and the injection cavity on the injection pump body, and the ink pump leakage channel is communicated with the ink pump ink inlet channel.

Preferably, an injection rod is arranged in the injection cavity, and the end part of the injection rod is connected with the end part of the injection shaft which sequentially passes through the second sealing plug and the first sealing plug.

Preferably, the injection cavity is a cylindrical cavity, the injection rod comprises a cylindrical rod body, and the two cylindrical side walls opposite to the rod body are provided with an ink taking cavity and an ink injecting cavity.

Preferably, the injection cavity is horizontally arranged, and the ink inlet of the ink pump is positioned at the upper part or the top of the injection pump body and is communicated with the injection cavity through the ink inlet channel of the ink pump; the ink outlet of the ink pump is positioned at the lower part or the bottom of the injection pump body and is communicated with the injection cavity through an ink outlet channel of the ink pump.

Preferably, the automatic ink adding system is provided with a base, the ink supply pump is arranged on the base, the base is further provided with an injection cylinder and a steering motor, the injection cylinder is directly connected with the end of the injection shaft and enables the injection shaft to reciprocate at a certain frequency, and the steering motor drives the injection shaft to reciprocate at a certain frequency through gear transmission.

Preferably, supply the china ink pump to supply the china ink pump for helicla flute formula, including the screw pump body, be equipped with the columniform rotatory chamber that is used for transmitting printing ink in the screw pump body, rotatory chamber one side has the accent that the cooperation set up, accent department has the sealing plug that seals rotatory chamber, the sealing plug has a cavity in accent department, the screw pump body sets up the screw pump seepage passageway that communicates with this cavity, be equipped with in the rotatory chamber with rotatory chamber cooperation and be columniform rotary rod, the rotary rod is close to and has a cavity between accent tip and the sealing plug, screw pump seepage passageway and this cavity intercommunication.

Preferably, the centralized ink delivery system comprises an ink storage tank body and a tank bottom, wherein the ink storage tank body is provided with an ink inlet of the tank body, the tank bottom or the side wall of the ink storage tank body is provided with an ink outlet of the tank body, an ink level sensing device is arranged in the ink storage tank body and is positioned at the upper part or the top in the ink storage tank body, and the tank bottom is provided with a stirring device; an ink guide plate is arranged at the lower part in the ink storage tank body, a tank body ink outlet channel is arranged between the lower part of the ink guide plate and the tank bottom, and an ink outlet of the tank body is communicated with the tank body ink outlet channel.

Preferably, full-digital ink supply system, set up the mounting substrate in the full-digital ink supply system, the backup pad behind the rear portion of mounting substrate sets up, the front portion of mounting substrate sets up the inkjet sword, the inkjet sword top sets up electrically conductive mechanism, electrically conductive mechanism is insulating with the inkjet sword, the mounting substrate, back backup pad and the half surrounding formation accommodation space of inkjet sword, a plurality of control panel sets up in this accommodation space top, and the rear portion of control panel links with back backup pad electricity, the front portion of control panel links with electrically conductive mechanism electricity, the setting is used for providing the ink supply assembly for the inkjet sword with the printing ink that concentrates digital analog system to provide in the accommodation space.

Compared with the prior art, the utility model, beneficial effect is:

the precision ink supply system provides a complete ink supply manner, and the ink can be supplied to the printing machine in a uniform and stable manner from the source ink by the ink supply system.

The accurate ink supply system utilizes artificial intelligence control, thereby accurately supplying ink for the printing machine in a short distance, overcoming the defect of long-distance ink supply at present, and being capable of matching with a control system to realize automatic operation and automatic ink supply to reduce the labor intensity by supplying ink in the short distance.

The automatic ink adding system of the accurate ink supply system is light in ink adding tank and simple in structure, can reduce working strength in operation, is convenient to replace, and improves operation efficiency. And the ink adding tank is small in quantity, so that the ink is not easy to deteriorate, the use quality of the ink can be improved, and the printing quality is ensured.

The ink supply pump that this accurate ink supply system's automation was adopted with black system divide into injection formula and two kinds of rotary tank formula, and wherein, two kinds of ink supply pumps homoenergetic lead the seepage of ink supply pump, make the seepage printing ink backward flow of ink supply pump to advancing the china ink mouth to avoid printing ink to permeate other positions, lead to influencing the life of ink supply pump, and can improve the operating performance who supplies the china ink pump from on the other hand, and improve work efficiency.

This accurate ink supply system's concentrated inking system can guarantee the stable performance of the internal printing ink of storage tank, prevents that printing ink skinning and viscosity grow from becoming thick, simultaneously, can descend black with even stable mode to stability for wholly supplying ink provides the guarantee of basis.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of the automatic inking system of the present invention;

FIG. 3 is a schematic structural view of the ink tank of the present invention;

FIG. 4 is a schematic structural view of an ink-adding cover of the ink-adding tank of the present invention;

FIG. 5 is a schematic view of the ink tank body and the ink cover of the ink tank of the present invention;

FIG. 6 is a schematic view of the ink tank structure of the ink tank of the present invention;

FIG. 7 is a schematic view of the bottom plate structure of the ink tank of the present invention;

FIG. 8 is a schematic view of another embodiment of the bottom plate of the ink tank of the present invention;

FIG. 9 is a schematic view of another embodiment of the ink tank of the present invention;

fig. 10 is a schematic structural view of the syringe pump of the present invention;

fig. 11 is a schematic structural view of an injection rod of the syringe pump of the present invention;

FIG. 12 is a schematic view of a partial structure of the automatic inking system of the present invention;

fig. 13 is a schematic structural view of the screw pump body of the present invention;

FIG. 14 is a schematic structural view of the screw pump body cooperating with the rotary rod of the present invention;

fig. 15 is a schematic structural view of a rotary rod of the present invention;

fig. 16 is an end view of a rotary lever of the present invention;

FIG. 17 is a schematic view of the external structure of the screw pump body of the present invention;

fig. 18 is a schematic structural view of the precession apparatus of the present invention;

fig. 19 is a schematic structural view of the precession base and the rotation shaft according to the present invention;

fig. 20 is a partial schematic structural view of the contact surface of the guide base and the screw base according to the present invention;

fig. 21 is a schematic structural view of the centralized inking system of the present invention;

fig. 22 is a top view of the interior of the ink reservoir of the centralized inking system of the present invention;

FIG. 23 is a schematic view of the lower part of the ink reservoir of the centralized inking system of the present invention;

fig. 24 is a schematic structural view of an agitating device of the centralized inking system of the present invention;

fig. 25 is a schematic diagram of an internal side view of the all-digital ink supply system of the present invention;

fig. 26 is a schematic diagram of the internal top partial structure of the all-digital ink supply system according to the present invention.

In the figure:

1-1 automatic ink adding system, 1-2 centralized ink conveying system, 1-3 full digital ink supplying system, 1-4 control system,

100 ink supply pumps and 200 ink adding tanks;

1-11 bases, 1-12 injection cylinders and 1-13 steering motors;

101, an injection pump body, 102, an injection cavity, 103, 104, 105, 106, a first sealing plug, 107, a second sealing plug, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122 ink pump outlet;

201 ink adding tank body, 202 ink adding cover, 203 bottom plate, 204 ink adding port, 205 sealing removing piece, 206 sealing groove, 207 sealing ring, 208 guiding convex strip, 209 guiding groove, 210 thin film layer, 211 ink adding seat, 212 ink adding nozzle, 213 body, 214 nozzle body, 215 balancing weight, 216 plug and 217 magnetic steel mark;

301 ink storage tank body, 302 tank bottom, 303 tank body ink inlet, 304 tank body ink outlet, 305 ink level sensing device, 306 stirring device, 307 ink guide plate, 308 tank body ink outlet channel, 309 filter component, 310 ink outlet hole, 311 upper cover, 312 heating device, 313 drainage plate, 314 ink collecting hole, 315 ink distribution cavity, 316 stirring blade, 317 stirring shaft, 318 stirring group, 319 stirring cross bar and 320 stirring longitudinal bar;

401 spiral pump body, 402 rotary cavity, 403 cavity opening, 404 ink inlet, 405 ink outlet, 406 sealing plug, 407 ink storage cavity, 408 spiral pump leakage channel, 409 spiral pump ink inlet channel, 410 rotary rod, 411 rotary shaft, 412 ink outlet channel, 413 screw-in device, 414 guide base, 415 screw-in base, 416 guide groove, 417 guide piece and 418 leakage cavity.

501 mounting base plate, 502 back backup pad, 503 inkjet sword, 504 conducting mechanism, 505 accommodation space, 506 control panel, 507 insulating part, 508 equal column, 509 ink supply assembly.

Detailed Description

The technical solution of the present invention is further described and illustrated by the following specific embodiments.

Example (b):

an accurate ink supply system, as shown in fig. 1, includes the following parts:

the automatic ink adding system 1-1 is connected with the centralized ink conveying system 1-2 through a pipeline and is used for supplying ink to the centralized ink conveying system 1-2;

the centralized ink conveying system 1-2 is connected with the automatic ink adding system 1-1 at the upstream and connected with the full digital ink supply system 1-3 at the downstream, and is used for conveying the ink to the full digital ink supply system 1-3 in a centralized and quantitative manner;

the upper stream of the all-digital ink supply system 1-3 is connected with the centralized ink delivery system 1-2 through a pipeline and is used for uniformly and stably supplying ink to the printing machine;

the control system 1-4 is electrically connected with the automatic ink adding system 1-1, the centralized ink conveying system 1-2 and the full digital ink supply system 1-3 and is used for controlling the smooth operation of the whole ink supply system;

the automatic ink adding system is provided with an ink supply pump 100, the ink supply pump 100 is provided with an ink pump ink inlet 104 and an ink pump ink outlet 105, and the ink pump ink outlet 105 is connected with the centralized ink conveying system 1-2 through a pipeline.

The accurate ink supply system utilizes the automatic ink supply system 1-1 to supply ink, then utilizes the centralized ink supply system 1-2 to supply distributed centralized ink for different positions on the ink jet cutter 503, and finally utilizes the full digital ink supply system 1-3 to supply ink for the printing machine accurately. The whole ink supply system is integrally controlled by the control system, so that the whole ink supply system can accurately operate.

The specific results for each system are as follows:

first, an automatic ink-feeding system 1-1;

the automatic ink supply system 1-1 includes an ink supply tank 200 and an ink supply pump 100, as shown in fig. 2,

first, an ink supply tank 200, as shown in fig. 3 to 9, with respect to the ink supply tank 200;

the ink adding tank 200 provides ink for the ink supplying pump through the ink inlet 104 of the ink pump, the ink tube of the ink adding tank 200 comprises a cylindrical ink adding tank body 201, an ink adding cover 202 is arranged at the upper part in the ink adding tank body 201, the ink adding cover 202 is matched with the inner wall of the ink adding tank body 201, a bottom plate 203 is arranged at the bottom of the ink adding tank body 201, an ink adding port 204 is arranged on the bottom plate 203, a sealing piece 205 covers the ink adding port 204, and the bottom of the ink adding cover 202 is matched with the top of the bottom plate 203. Meanwhile, a weight 215 is also provided on the top of the ink adding cover 202. The ink adding tank 201 is filled with ink, the ink adding cover 202 is arranged in the ink adding tank 201, downward pressure is applied to the ink adding cover 202 through a balancing weight 215, and the ink is extruded out from the ink adding port 204 at the bottom and enters the corresponding passive ink adding area. For environmental protection and adaptation to reuse, the material of the ink tank 201 is paper.

In order to enable automatic detection, the ink application cover 202 is provided with a magnetic steel mark 217, which is provided on the ink application cover 202, and the magnetic steel mark 217 may be provided on the circumferential side of the ink application cover 202 as shown in fig. 2, and the magnetic steel mark 217 may be in the form of a strip attached to the circumferential side of the ink application cover 202, or may be in the form of a block or a mass merely embedded in one point on the ink application cover 202. With the magnetic steel markers 217, the ink level can be monitored by detection of the magnetic steel markers 217 by an automatic detection tool.

In order to improve the above solution, as shown in fig. 3 and 4, the bottom of the ink adding cover 202 is a convex surface, the top of the bottom plate 203 is a concave surface matching the convex surface, and the ink adding port 204 is opened in the center of the bottom plate 203. Through the concave-convex design, the ink adding cover 202 can be ensured to extrude all the ink from the ink adding tank body 201 as far as possible, and waste is avoided. As shown in fig. 7, when the ink filling port 204 is large, a plug 216 matching with the ink filling port 204 is disposed at the bottom of the ink filling cover 202, and the plug 216 is in a truncated cone shape or a cone shape. The plug 216 may force ink out of the ink can 201 as much as possible.

The scheme is further improved, specifically, in a conventional design, theoretically, the ink adding cover 202 is in clearance fit with the inner wall of the ink adding tank body 201 in a downward extrusion process, but because the ink adding tank body in the application is made of paper, the ink adding tank body 201 has certain deformation, the deformation will inevitably cause a gap to be generated between the ink adding cover 202 and the inner wall of the ink adding tank body 201, and the gap will cause ink leakage, therefore, the side wall of the ink adding cover 202 is provided with the sealing groove 206, the sealing ring 207 is arranged in the sealing groove 206, the sealing ring 207 can adapt to the deformation of the ink adding tank body 201, the edge of the ink adding cover 202 is matched with the inner wall of the ink adding tank body 201, and the ink leakage is avoided.

Or, as shown in fig. 5, due to the material of the ink tank 201, the sidewall of the ink tank 201 is provided with the guiding ribs 208, the ink cap 202 is provided with the guiding grooves 209 cooperating with the guiding ribs 208, the number of the guiding ribs 208 is preferably not less than two, the ink cap 202 and the ink tank 201 can be divided into a plurality of parts by the guiding ribs 208, and the deformation of the ink tank is reduced. As shown in fig. 6, in order to ensure that the ink-adding cap 202 is tightly fitted with the ink-adding tank 201 during the lowering process, a thin film layer 210 is provided on the inner wall of the ink-adding tank 201, and the thin film layer 210 is smooth and is easily fitted with the ink-adding cap 202.

A further improvement is made to the above solution, specifically, as shown in fig. 7, an ink adding seat 211 is provided at the ink adding port 204, and the ink adding seat 211 is convex downward relative to the peripheral side thereof. The ink fountain 211 may be adapted to different passive ink application devices. As shown in fig. 8, an ink adding nozzle 212 is provided at the ink adding port 204, and the ink adding nozzle 212 includes a body 213 extending into the bottom plate 203 and connected to the bottom plate 203, and a horn-shaped nozzle body 214 connected to the body 213; the mouth 214 is an elastomeric material. Because the nozzle body 214 is made of elastic material, the tightness of contact can be enhanced through elastic deformation when the nozzle body is in contact with a passive ink adding device, and therefore leakage of ink is avoided.

The ink adding tank is environment-friendly due to the fact that paper is adopted as a main body material, meanwhile, the ink adding tank is light and convenient to carry, labor intensity can be reduced, and therefore work efficiency is improved, and the ink adding tank can be used for removing an ink adding cover to be recycled.

Next, the ink supply pump 100 is matched with the ink supply tank 200, and the ink supply pump 100 is an injection type ink supply pump or a spiral groove type ink supply pump.

First, the ink supply pump 4 is an injection type ink supply pump, as shown in fig. 10 to 12, and the details are as follows:

the automatic ink adding system is provided with bases 1-11, an ink supply pump 100 is arranged on the bases 1-11, injection cylinders 1-12 and steering motors 1-13 are further arranged on the bases 1-11, the injection cylinders 1-12 are directly connected with the end portion of an injection shaft 111 and enable the injection shaft 111 to reciprocate at a certain frequency, and the steering motors 1-13 drive the injection shaft 111 to rotate in a reciprocating mode at a certain frequency through gear transmission. The ink supply pump is a syringe pump, the main components of the syringe ink supply pump include a syringe pump body 101, the syringe pump body 101 is a main structure, a syringe chamber 102 for injecting ink is provided in the syringe pump body 101, and the syringe chamber 102 is horizontally disposed.

The injection cavity 102 is provided with an injection port 103 which is arranged in a matching way, the injection port 103 is used for the entering of an injection rod 110, an ink pump ink inlet 104 and an ink pump ink outlet 105 which are communicated with the injection cavity 102 are arranged on the injection pump body 101, wherein the ink pump ink inlet 104 is used for supplying an external ink source to the injection pump body 101 of the injection type ink supply pump, and the ink pump ink outlet 105 is used for injecting ink out under the action of the injection type ink supply pump 101 until the next link.

The main structure of the injection type ink supply pump of the present application is: at the injection port 103, there are a first sealing plug 106 and a second sealing plug 107, and the first sealing plug 106 and the second sealing plug 107 seal the ink of the injection chamber 102 with two barriers. However, in order to improve the sealing against ink leakage, a cavity is provided between the first sealing plug 106 and the second sealing plug 107, which cavity is formed by arranging the first sealing plug 106 and the second sealing plug 107 at a distance from each other, and by providing a space between the first sealing plug 106 and the second sealing plug 107. The cavity is a leakage cavity 121, the ink in the injection cavity 102 leaks from the joint of the first sealing plug 106 and the injection shaft 111 under the larger pressure of the injection rod 110, the ink goes into the leakage cavity 121, the pressure of the ink in the leakage cavity 121 is greatly reduced due to the pressure reduction effect of the first sealing plug 106, the leakage of the first sealing plug 106 is caused by the larger pressure of the ink in the injection cavity 102, after the pressure is reduced by the first sealing plug 106 serving as a pressure reduction part, the leakage of the ink in the leakage cavity 121 becomes much smaller due to the lower pressure, that is, the final leakage is reduced by two sealing plugs, however, in order to improve the leakage-proof effect, an ink pump leakage channel 108 communicated with the cavity (i.e., the leakage cavity 121) is further arranged in the injection pump body 101, the ink in the leakage cavity 121 is led out through the ink pump leakage channel 108, the pressure of the ink in the leakage cavity 121 against the second sealing plug 107 is further reduced, thereby preventing the ink from leaking out of the second sealing plug 107.

Specifically, one way is to communicate the ink pump leakage path 108 with the outside of the injection pump body 101, and since the pressure outside the injection pump body 101 is 0, after the leakage chamber 121 is communicated with the outside through the ink pump leakage path 108, the ink pressure inside the leakage chamber 121 is excellently reduced, thereby directly reducing the leakage of the ink through the second sealing plug 107.

Another way is as follows: an ink pump ink inlet channel 109 is arranged on the injection pump body 101 between the ink pump ink inlet 104 and the injection cavity 102, and the ink pump leakage channel 108 is communicated with the ink pump ink inlet channel 109, so that the leakage cavity 121 is connected with the ink pump ink inlet channel 109, and due to the fact that the pressure in the ink pump ink inlet channel 109 is small, after the leakage cavity 121 is connected with the ink pump ink inlet channel 109, on one hand, ink in the leakage cavity 121 can be guided to the ink pump ink inlet channel 109 for further utilization, and on the other hand, the problem of processing leaked ink by increasing the external boundary of the leakage cavity 121 led out of the injection pump body 101 is solved.

As shown in the figure, the injection cavity 102 is a cylindrical cavity, the injection cavity 102 is horizontally arranged, an injection rod 110 is arranged in the injection cavity 102, the injection rod 110 includes a cylindrical rod body 112, and two opposite cylindrical side walls of the rod body 112 are provided with an ink taking cavity 113 and an ink injecting cavity 114. The ink pump ink inlet 104 is positioned at the upper part or top of the injection pump body 101 and is communicated with the injection cavity 102 through an ink pump ink inlet channel 109; the ink pump outlet 105 is located at the lower portion or bottom of the syringe pump body 101 and communicates with the syringe chamber 102 through an ink outlet passage.

The injection rod 110 is used to inject the ink entered from the ink pump inlet 104 to the ink pump outlet 105 with pressure, and then further transfer to the next environment. The end of the injection rod 110 is connected to the end of the injection shaft 111 which passes through the second sealing plug 107 and the first sealing plug 106 in turn, and the injection rod 110 is driven by means of the injection shaft 111, so that the injection shaft 111 leaves a gap in the first sealing plug 106 and the second sealing plug 107, leaving a possibility of ink leakage along the injection shaft 111 under a greater pressure in the injection chamber 102.

As is conventional, a sealed cavity 115 is provided in the syringe body 101 outside the injection port 103, with the second sealing plug 107 located in the sealed cavity 115. On this basis, a seal ring 116 is provided on the peripheral side of the second sealing plug 107, and an oil seal 117 is provided on the second sealing plug 107 at the injection shaft 111 passing through the second sealing plug 107. Meanwhile, the following improvements are made: the second sealing plug 107 is provided with a liquid collecting cavity 118, the liquid collecting cavity 118 is positioned in the second sealing plug 107, a liquid discharging port 119 which is used for communicating the liquid collecting cavity 118 with the outside is arranged on the second sealing plug 107, the liquid discharging port 119 faces the outer side of the second sealing plug 107, namely the outer side of the sealing cavity 115, the liquid discharging port 119 is arranged around the injection shaft 111, and the liquid collecting cavity 118 forms a containing space around the injection shaft 111, and the containing space is used for collecting leaked ink, so that even if the ink in the leakage cavity 121 passes through the second sealing plug 107, the ink cannot be scattered around, the ink can be collected in the liquid collecting cavity 118, and the ink can be cleaned after being collected to a certain degree.

In a digital accurate ink supply system of a printing machine, an injection rod 110 is arranged in an injection sleeve 120, that is, the injection sleeve 120 is arranged in an injection cavity 102, the injection sleeve 120 is attached to the inner wall of the injection cavity 102, meanwhile, the injection sleeve 120 is arranged in a matching way with a first sealing plug 106, when the injection sleeve 120 is arranged, the first sealing plug 106 is used for replacing the injection sleeve 120 with the same result, and the first sealing plug 106 is a sealing end cover. The structure forms the injection type ink supply pump of the application, and a certain sealing effect can be achieved only by one layer of sealing plug, so that the structure of the injection type ink supply pump is simplified, the production cost is reduced, and the efficiency is improved.

Secondly, the ink supply pump 4 is a spiral groove type ink supply pump, as shown in fig. 13 to 20, and the details are as follows:

the ink supply pump 4 comprises a spiral pump body 401, a cylindrical rotary cavity 402 for transmitting ink is arranged in the spiral pump body 401, the rotary cavity 402 is a main working cavity, a cavity opening 403 is arranged on one side of the rotary cavity 402 in a matching mode, the cavity opening 403 is used for enabling components in the rotary cavity 402 to be in contact with the outside, a sealing plug 406 for sealing the rotary cavity 402 is arranged at the position of the cavity opening 403, and the rotary cavity 402 is changed from semi-closed to closed by the sealing plug 406.

An ink inlet 404 and an ink outlet 405 which are communicated with the rotary cavity 402 are arranged on the spiral pump body 401, the ink inlet 404 and the ink outlet 405 are correspondingly arranged, and particularly the ink inlet 404 and the ink outlet 405 are correspondingly arranged so as to facilitate ink inlet and ink outlet.

A cylindrical rotating rod 410 which is matched with the rotating cavity 402 is arranged in the rotating cavity 402, and the matching arrangement is used for ensuring that ink cannot leak from a gap between the rotating rod 410 and the rotating cavity 402; the rotating rod 410 transfers the ink in the ink inlet 404 to the ink outlet 405 through the rotating action, specifically, an ink storage chamber 407 is opened on the rotating rod 410, the ink storage chamber 407 is a gap opened on the cylindrical rotating rod 410 along the cylindrical side wall thereof, and the gap is used as a space for temporarily storing the ink. The ink storage cavity 407 corresponds to the positions of the ink inlet 404 and the ink outlet 405, and only if the ink storage cavity 407 corresponds to the ink inlet 404, the ink storage cavity 407 can be used as a carrying cavity, and ink is noticed from the ink inlet 404 to the ink outlet 405.

One end of the rotating rod 410 close to the cavity opening 403 is connected through a rotating shaft 411, the rotating shaft 411 penetrates through the sealing plug 406 to be connected with an external power system, the external power system provides power, the rotating rod 410 is driven to rotate through the rotating shaft 411, and under the rotation of the rotating rod 410, ink is transferred from the ink inlet 404 to the ink outlet 405 through the ink storage cavity 407. Of course, a screw pump ink inlet channel 409 is provided between the ink inlet 404 and the injection chamber 402 on the screw pump body 401, and the ink inlet 404 is communicated with the rotation chamber 402 through the screw pump ink inlet channel 409.

Specifically, a cavity is formed between the end of the rotating rod 410 close to the sealing plug 406 and the sealing plug 406, and the cavity is used for storing ink leaked from the gap between the rotating rod 410 and the rotating cavity 402, and meanwhile, a spiral pump leakage passage 408 communicated with the cavity is arranged on the spiral pump body 401 and guides the ink out. Because a cavity is arranged, the cavity is actually the leakage cavity 418, leaked ink can be stored by introducing the leakage cavity 418, and the spiral pump leakage channel 408 is arranged to release the pressure in the leakage cavity 418, so that the pressure of the ink in the leakage cavity 418 to the space between the rotating shaft 411 and the sealing plug 406 is greatly reduced, and after the pressure is reduced, the leakage degree of the ink from the space between the rotating shaft 411 and the sealing plug 406 is greatly reduced. The leakage cavity 418 is therefore designed to avoid ink leakage from between the rotation shaft 411 and the sealing plug 406 by releasing the pressure.

One of the ways is to communicate the spiral pump leakage channel 408 with the outside of the spiral pump body 401, and since the external pressure is 0, the purpose of releasing the pressure is achieved after communicating with the outside.

Another way is to connect the screw pump leakage channel 408 with the screw pump ink inlet channel 409, and because the pressure in the screw pump ink inlet channel 409 is relatively very small, when the screw pump leakage channel 408 is connected with the screw pump ink inlet channel 409, the pressure in the leakage cavity 418 can be greatly released, so as to achieve the purpose of releasing the pressure.

Specifically, as shown in fig. 13 and 14, the rotary cavity 402 is horizontally arranged, and the ink inlet 404 is located at the top of the screw pump body 401 and is communicated with the rotary cavity 402 through the screw pump ink inlet channel 409; the ink outlet 405 is located at the lower portion or bottom of the screw pump body 401 and communicates with the rotation chamber 402 through an ink outlet passage 412.

On the basis, in order to improve the conveying effect of the rotating rod 410, the ink supply pump further comprises a precession device 413 which is positioned outside the spiral pump body 401 and is used for promoting the rotating rod 410 to reciprocate, a thrust force can be formed by promoting the rotating rod 410 to reciprocate horizontally, the thrust force can promote the ink in the ink storage cavity 407 to be separated from the ink outlet channel 412 when the rotating rod 410 rotates at a high speed, and a vacuum is formed in the ink storage cavity 407, so that after the rotating rod 410 rotates, the ink in the ink inlet channel 409 of the spiral pump is sucked by the ink storage cavity 407, the whole circulation is completed, and the purpose of conveying the ink is achieved.

Specifically, the precession device 413 includes a guide base 414 and a precession base 415, the precession base 415 is embedded in the guide base 414 and is disposed in cooperation with the guide base 414, the rotation shaft 411 passes through the precession base 415, the precession base 415 rotates along with the rotation shaft, a curve-shaped guide groove 416 formed in a surrounding manner is disposed on an outer wall of the precession base 415, and the guide base 414 is disposed with a guide 417 in cooperation with the guide groove 416. The guide piece 417 is fitted into the guide groove 416, and when the screw base 415 rotates, the guide piece 417 changes the position of the screw base 415 by the curved guide groove 416. That is, when the power system drives the rotating shaft 411 to rotate, the screw base 415 rotates along with the shaft, and since the screw base 415 is provided with the curved guide groove 416, the screw base 415 reciprocates along the axial direction of the rotating shaft 411 along the curve of the guide groove 416 in cooperation with the guide piece 417 of the guide base 414 engaged therewith. The reciprocating motion of the screw-in base 415 drives the reciprocating motion of the rotating shaft 411, and further drives the reciprocating motion of the rotating rod 410, which is represented by the change of the relative position of the ink storage chamber 407 to the ink outlet channel 412, and the change will form a certain pressure to force the ink in the ink storage chamber 407 to be removed.

How much ink in the ink reservoir 407 escapes is related to the reciprocating amplitude of the rotating lever 410, that is, the reciprocating amplitude of the precession base 415, that is, the ink supply efficiency of the ink supply pump is related to the reciprocating amplitude of the precession base 415. The amplitude of the reciprocation of the precession base 415 is related to the amplitude of the curve fluctuation of the guide groove 416, which is adjusted according to actual needs, where the amplitude of the curve fluctuation of the guide groove 416 is set to 1-3 mm.

With the above structure, the ink can be transferred from the ink inlet 404 to the ink outlet 405 by the rotation of the rotation rod 410, and the spiral pump leakage path 408 is provided to ensure that the ink supply pump does not leak the ink at the joint of the sealing plug 406 and the rotation shaft 411.

A second, centralized inking system, which is,

with respect to a centralized inking system, as shown in fig. 21-24, the system includes at least a reservoir 301 and a can bottom 302, with a modification in which an upper cap 311 is also provided on top of the reservoir 301.

A tank body ink inlet 303 is arranged on an ink storage tank body 301 of the ink delivery system, the tank body ink inlet 303 is connected with an ink supply pump through a pipeline, ink of the ink supply pump enters the working tank through the tank body ink inlet 303, a tank body ink outlet 304 is arranged on the side wall of the tank bottom 302 or the ink storage tank body 301, and the tank body ink outlet 304 directly supplies ink for the printing machine. One preferred arrangement is to provide the reservoir outlet 304 in the side wall of the ink reservoir 301.

In order to facilitate the ink supply pump to timely supply ink to the working tank, an ink level sensing device 305 is particularly arranged in the ink storage tank body 301, the ink level sensing device 305 is located at the upper part or the top part in the ink storage tank body 301, the ink residual amount in the working tank is sensed through the ink level sensing device 305, and when the ink residual amount is smaller than a threshold value, the ink supply pump obtains a signal of the ink level sensing device 305 to supply ink to the working tank.

Particularly, the tank bottom 302 is provided with the stirring device 306, and the stirring device 306 can be arranged to uninterruptedly stir the ink in the working tank, so that the ink is prevented from being crusted and locally thickened to influence the uniformity of the ink.

In order to improve the uniformity and stability of ink discharge, an ink guide plate 307 is provided at the lower part in the ink tank 301, and the ink guide plate 307 is used for conveying the ink in the working tank to the tank outlet 304 in a stable and uniform manner. A tank ink outlet channel 308 is arranged between the lower part of the ink guide plate 307 and the tank bottom 302, and the tank ink outlet 304 is communicated with the tank ink outlet channel 308. Because the tank bottom 302 is provided with the stirring device 306, and the stirring device 306 is arranged at the bottom center of the tank, the tank ink outlet channel 308 surrounds the stirring device 306 to form an annular cavity.

In order to prevent the working tank from transmitting the ink with impurities to the printing equipment, a filter assembly 309 is specially arranged above the ink guide plate 307, and the filter assembly can filter the ink before passing through the ink guide plate 307, so that the impurities are prevented from being mixed into the ink and being transmitted to the printing equipment.

Of course, the ink guiding plate 307 is provided with a plurality of ink discharging holes 310, and the ink discharging holes 310 are arranged along the outer layer of the ink guiding plate 307, that is, the ink discharging holes 310 are arranged along the edge of the ink guiding plate 307, so as to avoid the center of the ink guiding plate 307.

In order to prevent the ink performance from being affected by the temperature decrease, a heating device 312 is provided in the ink tank body 301, and the ink in the operation tank is temperature-controlled by the heating device 312, so that the ink has stable performance.

The structure of the ink guide plate 307 is further improved as follows:

as shown in fig. 23, fig. 23 is a cross-sectional view, a cambered drainage plate 313 is arranged at the bottom of the ink guide plate 307, the top of the drainage plate 313 is connected with the bottom periphery of the ink guide plate 307, an ink collecting hole 314 is arranged at the center of the drainage plate 313, the ink collecting hole 314 avoids the stirring device 306, and a certain space is reserved for ink discharging. Therefore, the ink flowing down from the ink discharging holes 310 of the ink guide plate 307 is collected to the ink collecting holes 314 along the cambered drainage plates 313, is downwards guided to the tank ink outlet channel 308 from the ink collecting holes 314, and is then conveyed to the tank ink outlet 304 from the tank ink outlet channel 308.

However, since the tank outlet 304 is opened at a single point, the ink still has a flow velocity that is too low due to the distance from the tank outlet 304, which affects the uniformity, and therefore, the above structure is further improved, in which the ink distribution chamber 315 is disposed below the flow guide plate 313, the stirring blade 316 is disposed in the ink distribution chamber 315, and the stirring blade 316 can provide stirring power together with the stirring device 306. The ink distribution chamber 315 communicates with the tank outlet 304. Thus, the stirring blade 316 stirs and guides the ink in the ink distribution cavity 315, and the ink is uniformly supplied under the stirring action of the stirring blade 316, so that the ink in the ink distribution cavity 315 is uniformly led out from the tank ink outlet 304, and the uniformity and stability of ink supply are improved.

On the other hand, in order to prevent the oxidation and skinning of the surface layer of the ink in the ink tank 301, the stirring device 306 is particularly improved as follows:

the stirring device 306 comprises a stirring shaft 317 and at least two layers of stirring groups 318 arranged on the stirring shaft 317, in this embodiment, two layers are arranged, each layer is arranged in a staggered manner, specifically, the stirring groups 318 are composed of a stirring cross rod 319 and a stirring longitudinal rod 320, that is, the stirring cross rod 319 is arranged transversely, the inner end of the stirring cross rod 319 is connected with the stirring shaft 317, the stirring shaft 319 is extended outwards, the length of the stirring cross rod 319 directly covers a stirring area, the lower end of the stirring longitudinal rod 320 is connected with the outer end of the stirring cross rod 319, and the stirring longitudinal rod 320 has a certain angle with the vertical direction, the angle ranges from 5 degrees to 40 degrees, and more preferably, the angle is set to 30 degrees to 35 degrees, such as 30 degrees. After the longitudinal stirring rod 320 has a certain angle, a certain inclination is formed, and the inclination direction of the longitudinal stirring rod is in the tangential direction of the track of the outer end of the transverse stirring rod 319.

Because the viscosity of the ink is large, the size of the stirring device 306 cannot be too large, if the viscosity is too large, the power supply requirement is large, and in order to achieve a reasonable stirring effect to a certain extent and prevent the ink from skinning, the size of the stirring device needs to be reduced. Meanwhile, the stirring longitudinal rod 320 for stirring is obliquely arranged, so that the resistance can be reduced, and the same stirring effect can be still achieved.

Thirdly, a full-digital ink-supplying system,

the all-digital ink supply system 1-3 is internally provided with a mounting substrate 501, the rear part of the mounting substrate 501 is provided with a rear support plate 502, the front part of the mounting substrate 501 is provided with an ink jet knife 503, the top part of the ink jet knife 503 is provided with a conductive mechanism 504, the conductive mechanism 504 is insulated from the ink jet knife 503, the mounting substrate 501, the rear support plate 502 and the ink jet knife 503 are semi-surrounded to form an accommodating space 505, a plurality of control boards 506 are arranged above the accommodating space 505, the rear part of the control boards 506 is electrically connected with the rear support plate 502, the front part of the control boards 506 is electrically connected with the conductive mechanism 504, and an ink supply assembly 512 for supplying ink provided by a centralized digital-analog system. Ink supply assembly 509 specifically includes cooperating components, such as an ink pump and motor, for delivering ink to inkjet blade 503.

In order to insulate the conductive member 504 from the ink jet blade 503, an insulating member 507 is provided between the top of the ink jet blade 503 and the conductive member 504. The insulating member 507 is a coating provided on the ink jet blade 503, or an insulating member such as an insulating plate or an insulating block provided on the ink jet blade 503. In order to keep the control board 506 horizontally in the front-rear direction, a height pillar 508 is provided on the top of the conductive mechanism 504, and the height is adjusted by the height pillar 508, so that the control board 506 is electrically connected to the conductive mechanism 504 via the height pillar 508. The control boards 506 are disposed on the accommodating space 505, and the respective control boards 506 are disposed at intervals.

The rear support plate 502 is provided with a first power connection hole for connecting a negative electrode of a power supply, the conductive mechanism 504 is provided with a second power connection hole for connecting a positive electrode, and the positive electrode and the negative electrode supply power to the control plate 506, so as to supply power to the whole ink supply system.

Various motor parts including an ink pump motor are mounted in the accommodating space 505, and these parts are fixed by mounting holes provided in the rear support plate 502.

In the above structure, the mounting substrate 501, the rear support plate 502 and the ink-jet blade 503 constitute a holder, and the ink-jet blade 503 is completely insulated by an insulating layer, which separates the conductive mechanism 504 and the ink-jet blade 503. A plurality of control boards 506 and connection power lines are installed on the upper surfaces of the conductive mechanism 504 and the rear support plate 502, and the connection between the control boards 506 is in a parallel manner. The conductive mechanism 504 and the rear support plate 502 are made of aluminum alloy, and the surfaces of the conductive mechanism and the rear support plate are subjected to chromate oxidation treatment, so that the conductive mechanism can bear a plurality of loads and has excellent conductivity. The back support plate 502 is provided with a plurality of counter bores and through holes for mounting a plurality of motors.

Fourth, control system

With respect to the control systems 1-4, the systems are electrically connected to the above-described systems by lines, and the operation of the systems is controlled by specific software settings.

The control system 1-4 collects external rotation speed signals and ink transmission signals, then transmits the signals to the computer, the computer combines with the expert database to calculate the ink output of each ink key, and the signals are transmitted to each control panel 506 of the frame part through the control system.

Specifically, the ink is added to the ink supply pump from the ink adding tank, the ink supply pump determines whether to supply ink according to the ink level in the centralized ink conveying system, the ink is supplied to the centralized ink conveying system through the ink supply pump, then the ink is intensively conveyed to different ink supply assemblies 512 through the centralized ink conveying system, and the ink is supplied through the ink jet blade 503.

The system is installed on the printing machine, manual intervention is not needed, a lot of labor cost is saved, and the efficiency and the automation degree of the printing machine are greatly improved.

Although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the above-mentioned method and technical contents to make possible changes and modifications to the technical solution of the present invention without departing from the spirit and scope of the present invention, therefore, any simple modification, equivalent changes and modifications made to the above embodiments by the technical substance of the present invention all belong to the protection scope of the technical solution of the present invention.

Claims

1. An accurate ink supply system, comprising:

the control system is electrically connected with the automatic ink adding system, the centralized ink conveying system and the full-digital ink supply system and is used for controlling the smooth operation of the whole ink supply system;

the automatic ink adding system is provided with an ink supply pump, the ink supply pump is provided with an ink inlet (104) of the ink pump and an ink outlet (105) of the ink pump, and the ink outlet (105) of the ink pump is connected with the centralized ink conveying system through a pipeline.

2. The accurate ink supply system according to claim 1, wherein the automatic ink supply system comprises an ink supply tank (200), the ink supply tank (200) supplies ink to the ink supply pump through an ink inlet (104) of the ink pump, the ink supply tank (200) comprises a cylindrical ink supply tank body (201), an ink supply cover (202) is arranged at the upper part in the ink supply tank body (201), the ink supply cover (202) is matched with the inner wall of the ink supply tank body (201), a bottom plate (203) is arranged at the bottom of the ink supply tank body (201), an ink supply port (204) is arranged on the bottom plate (203), a sealing piece (205) covers the ink supply port (204), and the bottom of the ink supply cover (202) is matched with the top of the bottom plate (203).

3. An accurate ink supply system according to claim 1, wherein the ink supply pump (100) is an injection type ink supply pump, and comprises an injection pump body (101), an injection cavity (102) for injecting ink is arranged in the injection pump body (101), the injection cavity (102) has an injection port (103) arranged in a matching manner, the injection pump body (101) is provided with an ink pump inlet (104) and an ink pump outlet (105) which are communicated with the injection cavity (102), the injection port (103) is provided with a first sealing plug (106) and a second sealing plug (107), a cavity is arranged between the first sealing plug (106) and the second sealing plug (107), the injection pump body (101) is provided with an ink pump leakage channel (108) communicated with the cavity, an ink pump ink inlet channel (109) is arranged between the ink pump ink inlet (104) and the injection cavity (102) on the injection pump body (101), and the ink pump leakage channel (108) is communicated with the ink pump ink inlet channel (109).

4. An accurate ink supply system according to claim 3, wherein an injection rod (110) is arranged in the injection cavity (102), and the end of the injection rod (110) is connected with the end of the injection shaft (111) which passes through the second sealing plug (107) and the first sealing plug (106) in sequence.

5. An accurate ink supply system according to claim 3, wherein the injection cavity (102) is a cylindrical cavity, the injection rod (110) includes a cylindrical rod body (112), and two opposite cylindrical side walls of the rod body (112) are provided with an ink taking cavity (113) and an ink injecting cavity (114).

6. An accurate ink supply system according to claim 3, wherein the injection cavity (102) is horizontally arranged, the ink pump inlet (104) is positioned at the upper part or the top of the injection pump body (101) and is communicated with the injection cavity (102) through the ink pump inlet channel (109); the ink outlet (105) of the ink pump is positioned at the lower part or the bottom of the injection pump body (101) and is communicated with the injection cavity (102) through an ink outlet channel (122) of the ink pump.

7. The accurate ink supply system according to claim 3, wherein the automatic ink supply system is provided with a base (1-11), the ink supply pump (100) is arranged on the base (1-11), the base (1-11) is further provided with an injection cylinder (1-12) and a steering motor (1-13), the injection cylinder (1-12) is directly connected with the end of the injection shaft (111) and enables the injection shaft (111) to reciprocate at a certain frequency, and the steering motor (1-13) drives the injection shaft (111) to reciprocate at a certain frequency through gear transmission.

8. An accurate ink supply system according to claim 1, wherein the ink supply pump (100) is a spiral groove type ink supply pump, and comprises a spiral pump body (401), a cylindrical rotating cavity (402) for transferring ink is arranged in the spiral pump body (401), a cavity opening (403) is arranged on one side of the rotating cavity (402) in a matching manner, a sealing plug (406) for sealing the rotating cavity (402) is arranged at the cavity opening (403), a cavity is arranged at the cavity opening (403) of the sealing plug (406), a spiral pump leakage channel (408) communicated with the cavity is arranged in the spiral pump body (401), a cylindrical rotating rod (410) matched with the rotating cavity (402) is arranged in the rotating cavity (402), a cavity is arranged between the end of the rotating rod (410) close to the cavity opening (403) and the sealing plug (406), and the spiral pump leakage channel (408) is communicated with the cavity.

9. An accurate ink supply system according to claim 1, wherein the centralized ink delivery system comprises an ink storage tank (301) and a tank bottom (302), the ink storage tank (301) is provided with a tank inlet (303), the tank bottom (302) or a side wall of the ink storage tank (301) is provided with a tank outlet (304), an ink level sensing device (305) is arranged in the ink storage tank (301), the ink level sensing device (305) is arranged at the upper part or the top in the ink storage tank (301), and the tank bottom (302) is provided with a stirring device (306); an ink guide plate (307) is arranged at the lower part in the ink storage tank body (301), a tank body ink outlet channel (308) is arranged between the lower part of the ink guide plate (307) and the tank bottom (302), and a tank body ink outlet (304) is communicated with the tank body ink outlet channel (308).

10. The accurate ink supply system according to claim 1, wherein a mounting substrate (501) is arranged in the full digital ink supply system, a rear supporting plate (502) is arranged at the rear part of the mounting substrate (501), an ink jet blade (503) is arranged at the front part of the mounting substrate (501), a conductive mechanism (504) is arranged at the top part of the ink jet blade (503), the conductive mechanism (504) is insulated from the ink jet blade (503), the mounting substrate (501), the rear supporting plate (502) and the ink jet blade (503) are semi-enclosed to form a containing space (505), a plurality of control boards (506) are arranged above the containing space (505), the rear part of the control plate (506) is electrically connected with the rear supporting plate (502), the front part of the control plate (506) is electrically connected with the conductive mechanism (504), and an ink supply assembly (509) for supplying ink provided by the centralized digital-analog system to the ink jet blade (503) is arranged in the accommodating space.