Automatic ink supply device for silk-screen printing ink

Abstract

The utility model discloses an automatic silk-screen printing ink supply device which comprises a gantry rack which is arranged on a silk-screen printing machine and is close to one side of a scraping and printing scraping plate, an ink feeding mechanism is arranged on the gantry rack, a pumping mechanism is arranged on one side of the silk-screen printing machine, and the ink feeding mechanism and the pumping mechanism are connected with a programmable logic controller (PLC). The device is simple in structure and low in cost, the pumping mechanism is additionally arranged on one side of the screen printing machine, the ink feeding mechanism is additionally arranged on one side of the scraping printing scraper of the screen printing machine, the pumping mechanism and the ink feeding mechanism are controlled by the PLC, ink is automatically and evenly fed to the screen printing plate in a quantitative mode, time and labor are saved in operation, convenience and high efficiency are achieved, the printing quality is effectively guaranteed, and the production efficiency is improved. The economic practicability is good.

Description

Technical Field

[0001] The utility model relates to an automatic ink feeding device for screen printing ink, belonging to the technical field of printing equipment. Background Art

[0002] Screen printing refers to using a screen as a printing plate base and making a screen printing plate with graphics and text through a photosensitive plate-making method. Screen printing consists of five major elements: a screen printing plate, a squeegee, ink, a printing table, and a substrate. Currently, the screen frames of screen printing plates on the market are all flat screen frames. The printing is carried out based on the basic principle that the ink can pass through the mesh holes of the graphic part of the screen printing plate, while the ink cannot pass through the mesh holes of the non-graphic part. During printing, ink is poured at one end of the screen printing plate, and a certain pressure is applied to the ink part on the screen printing plate with a squeegee, and at the same time, it is moved uniformly towards the other end of the screen printing plate. The ink is squeezed from the mesh holes of the graphic part onto the substrate during the movement.

[0003] During the screen printing process, the traditional ink addition method is manual ink addition. When adding ink, the screen printing machine needs to stop working. The operator manually pours all the screen printing ink at a corner of the screen printing plate. After the screen printing ink on the plate is evenly spread on the screen printing plate, the printing operation can be carried out. This operation is time-consuming and laborious, and the efficiency is low. Moreover, relying on manual replenishment, there are many human factors in the amount and frequency of ink addition. The accuracy of the ink addition amount is low, which affects the quality of printed products. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide an automatic ink feeding device for screen printing ink to solve at least the problems mentioned in the background art.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] An automatic ink feeding device for screen printing ink, comprising:

[0007] A gantry frame, which is arranged on the screen printing machine and is close to the side of the scraping squeegee;

[0008] An ink feeding mechanism, which is arranged on the gantry frame and can move back and forth along the gantry frame;

[0009] A pumping mechanism, which is arranged on one side of the screen printing machine. The feed inlet of the pumping mechanism is connected to an ink storage device, and the discharge outlet is connected to the ink feeding mechanism;

[0010] A PLC controller, which is connected to the ink feeding mechanism and the pumping mechanism, and is used to control the mutual cooperation of the ink feeding mechanism and the pumping mechanism to quantitatively and evenly send the ink to the screen printing plate.

[0011] Further, the gantry frame includes a rectangular frame spanning across the frame of the screen printing machine. Both ends of the rectangular frame are detachably connected to the frame of the screen printing machine through support rods, and a guide rail is provided in the middle of the rectangular frame.

[0012] Further, the ink feeding mechanism includes a telescopic ink feeding pipe wound around the guide rail. An ink outlet nozzle is provided at the discharging end of the telescopic ink feeding pipe, and the ink outlet nozzle extends above the screen printing plate close to the squeegee. The discharging end of the telescopic ink feeding pipe is connected to a servo motor capable of driving it to move back and forth along the guide rail.

[0013] Further, the pumping mechanism includes a peristaltic pump. The inlet of the peristaltic pump is connected to an ink storage device through an inlet peristaltic tube, and the outlet is connected to the feeding end of the telescopic ink feeding pipe through an outlet peristaltic tube.

[0014] Further, a bracket is provided on one side of the frame of the screen printing machine, and the peristaltic pump is installed on the bracket.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model has a simple structure and low cost. By adding a pumping mechanism on one side of the screen printing machine and an ink feeding mechanism on the side of the squeegee of the screen printing machine, the pumping mechanism and the ink feeding mechanism are controlled by a PLC controller, and the ink is automatically and quantitatively and evenly sent onto the screen printing plate. The operation is time-saving and labor-saving, convenient and efficient, and effectively guarantees the printing quality, having good economic practicability.

[0017] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings, where:

[0019] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0020] Figure 2 is a schematic structural view of the present utility model Figure 2 。

[0021] In the figure: 1. Gantry frame; 101. Rectangular frame; 102. Guide rail; 103. Support rod; 2. Screen printing machine; 201. Frame; 202. Workbench; 203. Scraping squeegee; 3. Ink feeding mechanism; 301. Telescopic ink feeding pipe; 302. Ink outlet nozzle; 303. Servo motor; 4. Pumping mechanism; 5. PLC controller; 6. Ink storage device; 7. Bracket. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figure 1 - Figure 2 shown, the first embodiment of the present invention provides an automatic ink feeding device for screen printing ink, including:

[0024] A gantry frame 1, the gantry frame 1 is arranged on a screen printing machine 2, the screen printing machine 2 includes a frame 201, and a workbench 202 is arranged on the frame 201; a screen printing plate is arranged on the top surface of the workbench 202, and a scraping squeegee 203 is arranged above the screen printing plate; the gantry frame 1 is arranged on one side close to the scraping squeegee 203;

[0025] An ink feeding mechanism 3, the ink feeding mechanism 3 is arranged on the gantry frame 1, can move back and forth along the gantry frame 1, and evenly distributes the ink on the screen printing plate;

[0026] A pumping mechanism 4, the pumping mechanism 4 is arranged on one side of the screen printing machine 2, the feed port of the pumping mechanism 4 is connected to an ink storage device 6, and the discharge port is connected to the ink feeding mechanism 3;

[0027] A PLC controller 5, the PLC controller 5 is connected to the ink feeding mechanism 3 and the pumping mechanism 4, and is used to control the ink feeding mechanism 3 and the pumping mechanism 4 to cooperate with each other to quantitatively and evenly send the ink to the screen printing plate.

[0028] The gantry frame 1 includes a rectangular frame 101 spanning across the frame 201 of the screen printing machine. Both ends of the rectangular frame 101 are detachably connected to the frame 201 of the screen printing machine through support rods 103, and a guide rail 102 is provided in the middle of the rectangular frame 101. Specifically, the support rods 103 are connected to the frame 201 by screws, with high disassembly and assembly convenience. The gantry frame 1 can be made of stainless steel or aluminum alloy. The support rod 103 is of an electric telescopic rod structure, enabling the gantry frame 1 to achieve lifting adjustment when the equipment needs maintenance and cleaning, which is more convenient for equipment maintenance and cleaning. The PLC controller 5 can be arranged on the gantry frame 1 and close to one end of the pumping mechanism 4, which is more convenient for operation.

[0029] The ink feeding mechanism 3 includes a telescopic ink feeding tube 301 wound around the guide rail 102. An ink outlet nozzle 302 is provided at the discharging end of the telescopic ink feeding tube 301, and the ink outlet nozzle 302 extends above the screen printing plate close to the scraping blade 203. The discharging end of the telescopic ink feeding tube 301 is connected to a servo motor 303 that can drive it to move back and forth along the guide rail. The servo motor 303 is controlled by the PLC controller 5 and moves linearly and smoothly along the track 102, thereby moving the discharging end of the telescopic ink feeding tube 301 and evenly distributing the ink on the screen printing plate. The position and speed can be set according to requirements, with stable operation, high precision, and a gentle running speed. Alternatively, the discharging end of the telescopic ink feeding tube 301 can also be connected to an electric telescopic rod, and through the telescopic movement of the electric telescopic rod, drive the telescopic ink feeding tube 30 to move smoothly along the track 102 and evenly distribute the ink on the screen printing plate.

[0030] The pumping mechanism 4 includes a peristaltic pump 401. The inlet of the peristaltic pump 401 is connected to the ink storage device 6 through an inlet peristaltic tube 402, and the outlet is connected to the feeding end of the telescopic ink feeding tube 301 through an outlet peristaltic tube 403. Specifically, the model of the peristaltic pump 401 is New Kai BT6001Y35. The peristaltic pump 401 performs ink adding work according to the parameters set by the PLC controller 5, can achieve automatic ink adding at a fixed time and fixed quantity, improve the ink adding accuracy, have no contact and other secondary pollution, have stable pumping, high pumping volume accuracy, convenient flow regulation; have a large self-suction force, good sealing performance and can adapt to various ink.

[0031] A bracket 7 is provided on one side of the frame 201 of the screen printing machine, and the peristaltic pump 401 is installed on the bracket 7.

[0032] The working principle and process of this device:

[0033] (1) According to the printing parameters of the screen printing machine 2, the ink supply parameters are preset in the PLC controller 5. The ink supply parameters include the ink adding time, ink adding amount of the peristaltic pump 401, the running speed of the servo motor 303, etc., such as:

[0034] The vehicle speed of the screen printing machine: 3000 - 3500 sheets / h;

[0035] Peristaltic pump 401: Add ink one ladle every 8 minutes, about 0.6 - 0.7 kg;

[0036] Servo motor 303: 0.1 m / s;

[0037] (2) Start the peristaltic pump 401 and the servo motor 303. The peristaltic pump 401 sends the ink in the ink storage device 6 to the telescopic ink delivery pipe 301 regularly and quantitatively. The servo motor 303 moves smoothly along the track in a straight line, and then drives the telescopic ink delivery pipe to move back and forth, evenly distributing the ink on the screen printing plate. Finally, the ink is squeezed by the squeegee 203, so that the ink is transferred to the printing substrate through the screen printing plate.

[0038] The above are only the preferred embodiments of the present invention, and do not impose any form of confidentiality restrictions on the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical content of the present invention and without departing from the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic ink supply device for screen printing ink, characterized in that, Comprising: A gantry frame (1), which is arranged on the screen printing machine (2) and is close to the side of the squeegee (203); An ink feeding mechanism (3), which is arranged on the gantry frame (1) and can move back and forth along the gantry frame (1); A pumping mechanism (4), which is arranged on one side of the screen printing machine (2). The feeding port of the pumping mechanism (4) is connected to the ink storage device (6), and the discharging port is connected to the ink feeding mechanism (3); A PLC controller (5), which is connected to the ink feeding mechanism (3) and the pumping mechanism (4), and is used to control the cooperation of the ink feeding mechanism (3) and the pumping mechanism (4) to quantitatively and evenly send the ink onto the screen printing plate.

2. The automatic ink feeding device for screen printing ink according to claim 1, wherein The gantry frame (1) includes a rectangular frame (101) spanning across the frame (201) of the screen printing machine. Both ends of the rectangular frame (101) are detachably connected to the frame (201) of the screen printing machine through support rods (103), and a guide rail (102) is provided in the middle of the rectangular frame (101).

3. The automatic ink feeding device for screen printing ink according to claim 2, wherein The ink feeding mechanism (3) includes a telescopic ink feeding pipe (301) wound around the guide rail (102). An ink outlet nozzle (302) is provided at the discharging end of the telescopic ink feeding pipe (301). The ink outlet nozzle (302) extends above the screen printing plate close to the squeegee (203). The discharging end of the telescopic ink feeding pipe (301) is connected to a servo motor (303) that can drive it to move back and forth along the guide rail.

4. The automatic ink feeding device for screen printing ink according to claim 3, wherein The pumping mechanism (4) includes a peristaltic pump (401). The feeding port of the peristaltic pump (401) is connected to the ink storage device (6) through a feeding peristaltic pipe (402), and the discharging port is connected to the feeding end of the telescopic ink feeding pipe (301) through a discharging peristaltic pipe (403).

5. The automatic ink supply device for screen printing ink according to claim 4, wherein, A bracket (7) is provided on one side of the frame (201) of the screen printing machine, and the peristaltic pump (401) is installed on the bracket (7).

Images