Local etching system of screen printing plate

Abstract

The invention relates to a local etching system of a screen printing plate, and relates to the technical field of screen printing plate etching, the local etching system comprises a rack, an electric cylinder is arranged on the rack, a working frame is driven by the electric cylinder to slide, the working frame is used for installing the screen printing plate, a liquid cylinder and a bottom plate are fixed on the rack, the bottom of the liquid cylinder is arranged in a penetrating manner, and an annular sealing gasket I is fixed on the bottom surface of the liquid cylinder; the liquid cylinder is tightly pressed with the top surface of the screen printing plate through a sealing gasket I; the bottom plate is located below the screen printing plate and located under the liquid cylinder, and an annular second sealing gasket is fixed to the edge of the top face of the bottom plate. According to the screen printing plate etching device, the local position of a screen printing plate can be etched, the etching range can be increased through movement, consumption of etching liquid is reduced, the etching liquid with the needed volume can be poured into the liquid cylinder according to the etching amount, and waste is reduced; cleaning is also completed after etching of the screen printing plate is completed, subsequent steps are reduced, and cleaning water can be saved; and the etching liquid after chemical reaction is pumped out through the liquid pumping pipe, and unused liquid on the upper layer flows downwards to be supplemented, so that the high efficiency of etching is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of screen etching, and in particular to a local etching system for a screen. Background Art

[0002] Solar screens are usually made of stainless steel and other materials woven into mesh of different mesh sizes and latex coated on the mesh and mounted on a mesh frame. They have important application value in the field of solar printing. Etching is an indispensable technology in the production process of solar panels. The screen before etching is a thin-walled metal plate.

[0003] The existing invention patent application with publication number CN112458461A discloses a knotless SE screen etching process, which includes the following steps: S1 rinsing, cleaning the SE screen to be processed, and rinsing the SE screen with deionized water for 20-60s; S2 coating, coating the screen with photosensitive emulsion to form a protective film; S3 pattern processing, processing the screen by exposure / laser method to obtain a pattern according to needs; S4 etching, placing the SE screen in the etching solution of the etching tank for etching reaction, and after the etching is completed, immersing it in the cleaning solution for cleaning to obtain the screen.

[0004] The existing utility model patent with announcement number CN213519863U discloses an etching device for producing thin-film solar cells, including a device body, an etching groove is arranged at the upper end of the device body, a filter tube is arranged on the outer surface of one side of the etching groove, a filter screen is arranged inside the filter tube, a threaded connecting tube is arranged on the outer surface of the filter tube, a guide tube is arranged at one end of the filter tube, a protective cover is arranged on the outer surface of the upper end of the etching groove, and a hinge is arranged between the etching groove and the protective cover.

[0005] With respect to the above-mentioned related technologies, the inventors believe that currently etching is basically carried out in an extensive manner, in which the entire screen is placed in a liquid tank containing etching liquid, which consumes a lot of etching liquid, and the parts of the screen that do not need to be etched are also immersed in the liquid tank, which is relatively wasteful. Summary of the invention

[0006] The present application provides a local etching system for a screen, which can etch a local position of the screen and increase the etching range by moving, thereby reducing the consumption of etching liquid.

[0007] The present application provides a partial etching system for a screen, which adopts the following technical solution: A partial etching system for a screen comprises a frame, wherein the frame is provided with an electric cylinder and a working frame driven to slide by the electric cylinder, the working frame is used to install the screen, the frame is fixed with a liquid cylinder and a bottom plate, the bottom of the liquid cylinder is through-set, an annular sealing gasket 1 is fixed to the bottom surface of the liquid cylinder, and the liquid cylinder is pressed against the top surface of the screen through the sealing gasket 1; the bottom plate is located below the screen and directly below the liquid cylinder, an annular sealing gasket 2 is fixed to the top surface edge of the bottom plate, and the bottom plate is pressed against the bottom surface of the screen through the sealing gasket 2, and the positions of the sealing gasket 1 and the sealing gasket 2 are directly opposite to each other.

[0008] By adopting the above technical scheme, sealing is performed on both sides of the screen by sealing gasket 1 and sealing gasket 2, the etching liquid in the liquid cylinder etches the screen, and the etching position is changed by moving the screen. The etching system can etch a local position of the screen, and can increase the etching range by moving, thereby reducing the consumption of etching liquid.

[0009] Optionally, the fluid cylinder is connected to a liquid extraction tube, the end of the liquid extraction tube is close to the inner bottom of the fluid cylinder, the other end of the liquid extraction tube is connected to a liquid pump, and the output end of the liquid pump is connected to a waste liquid tank.

[0010] By adopting the above technical scheme, the etching liquid at the bottom of the liquid cylinder is the position participating in the chemical reaction, and the effective components of the liquid after etching decrease, but still accumulate at the bottom of the liquid cylinder. The liquid at this position is extracted by the liquid extraction tube, and the unused liquid in the upper layer flows downward to be supplemented, thereby ensuring the high efficiency of the etching.

[0011] Optionally, the end of the liquid extraction tube located inside the fluid cylinder is located at the center of the fluid cylinder, and the end of the liquid extraction tube is arranged vertically downward.

[0012] By adopting the above technical solution, the position and orientation of the liquid extraction tube are more reasonable, which facilitates the extraction of liquid at the bottom of the liquid cylinder.

[0013] Optionally, a cleaning cylinder is fixed next to the liquid cylinder, the bottom of the cleaning cylinder is through-set, the cleaning cylinder is connected to a water pipe, the lower end of the water pipe is located in the cleaning cylinder and is equipped with a spray head.

[0014] By adopting the above technical solution, clean water is sprayed into the cleaning cylinder through the spray head to clean the etched screen.

[0015] Optionally, a water collecting bucket is fixed to the frame, and the water collecting bucket is located below the screen and directly below the cleaning cylinder, and the lower end of the water collecting bucket is connected to a water tank.

[0016] By adopting the above technical solution, the cleaned water is collected by the water collecting bucket and sent to the water tank for storage.

[0017] Optionally, an annular sealing gasket three is fixed to the edge of the bottom surface of the cleaning cylinder, and the cleaning cylinder is pressed against the top surface of the screen through the sealing gasket three; an annular sealing gasket four is fixed to the edge of the top surface of the water collecting bucket, and the water collecting bucket is pressed against the bottom surface of the screen through the sealing gasket four, and the positions of the sealing gasket three and the sealing gasket four are opposite to each other.

[0018] By adopting the above technical solution, the sealing gaskets 3 and 4 are used to seal on both sides of the screen, so that the water in the cleaning cylinder will not continue to leak outward.

[0019] Optionally, the end of the water pipe away from the sprinkler head is connected to the inner bottom of the water tank, and a water pump is installed on the water pipe.

[0020] By adopting the above technical solution, the water in the water tank is pumped to the sprinkler head for spraying by a water pump, thereby forming a water cycle and reducing the waste of water resources.

[0021] Optionally, a ventilation gap is provided between the liquid cylinder and the cleaning cylinder, and the top surface of the screen is located at the lower end of the ventilation gap.

[0022] By adopting the above technical solution, when the screen passes between the sealing gasket 1 and the sealing gasket 2, the etching liquid will be retained in the slots etched on the screen and carried out of the liquid cylinder, and the liquid in the slots of the screen can fall spontaneously through the ventilation gap.

[0023] Optionally, a fan is fixed to the upper end of the ventilation gap, and an air outlet of the fan is connected to the upper end of the ventilation gap.

[0024] By adopting the above technical solution, after the fan is started, a downward airflow is generated in the ventilation gap, so that the etching liquid in the slot holes of the screen is blown downward, thereby improving the cleanliness of the screen.

[0025] Optionally, a liquid collecting hopper is fixed to the frame, and the liquid collecting hopper is located below the screen and directly below the ventilation gap, and the lower end of the liquid collecting hopper is connected to the waste liquid tank.

[0026] By adopting the above technical solution, the etching liquid dropped from the ventilation gap is received by the liquid collecting bucket and then stored in the waste liquid tank.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. It can etch the local part of the screen and increase the etching range by moving, which reduces the consumption of etching liquid. The required volume of etching liquid can be poured into the liquid cylinder according to the etching amount, which reduces waste; 2. After the screen etching is completed, the cleaning is also completed, which reduces the subsequent steps and saves cleaning water; 3. The etching liquid after the chemical reaction is extracted through the liquid extraction tube, and the unused liquid on the upper layer flows downward to be replenished to ensure the high efficiency of etching. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a system diagram of a partial etching system of a screen in an embodiment; Figure 2 is a three-dimensional diagram of a working frame and a screen of an embodiment; Figure 3 It is a partial exploded view of the embodiment.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Electric cylinder; 12. Working frame; 13. Slide; 10. Screen; 2. Liquid cylinder; 20. Bottom plate; 21. Sealing gasket one; 22. Sealing gasket two; 23. Liquid extraction pipe; 24. Liquid pump; 25. Waste liquid tank; 4. Cleaning cylinder; 3. Ventilation gap; 30. Liquid collecting bucket; 31. Fan; 40. Water collecting bucket; 41. Water pipe; 42. Sprinkler head; 5. Water tank; 43. Sealing gasket three; 44. Sealing gasket four; 51. Water pump. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] Reference Figure 1 and Figure 2 The present embodiment discloses a partial etching system for a screen, including a frame 1, on which an electric cylinder 11 and a working frame 12 driven to slide by the electric cylinder 11 are arranged, and a slide groove 13 for the working frame 12 to slide horizontally is provided. The working frame 12 is used to install a screen 10, which is a thin-walled metal plate before etching. The screen 10 is limited in the working frame 12 by a clamp (not shown in the figure). After the screen 10 and the working frame 12 are installed, the top and bottom surfaces of the screen 10 are not blocked.

[0032] Reference Figure 1 and Figure 3 , the frame 1 is fixed with a fluid cylinder 2 and a bottom plate 20, the bottom of the fluid cylinder 2 is connected, and etching liquid is added into the fluid cylinder 2 through the top of the fluid cylinder 2. The bottom surface of the fluid cylinder 2 is fixed with an annular sealing gasket 1 21, and the fluid cylinder 2 is pressed against the top surface of the screen 10 through the sealing gasket 1 21; the bottom plate 20 is located below the screen 10 and directly below the fluid cylinder 2, and the top surface edge of the bottom plate 20 is fixed with an annular sealing gasket 2 22, and the bottom plate 20 is pressed against the bottom surface of the screen 10 through the sealing gasket 2 22, and the positions of the sealing gasket 1 21 and the sealing gasket 2 22 are directly opposite to each other.

[0033] It should be noted that the width of the sealing pad 1 21 and the sealing pad 2 22 is greater than the width of the etched slot, and the sealing pads 1 21 and the sealing pad 2 22 are sealed on both sides of the screen 10. Regardless of whether the screen 10 is etched through, the etching solution in the liquid cylinder 2 will not continue to leak outwards.

[0034] Fluid cylinder 2 is communicated with a liquid extraction pipe 23, the end of which is near the inner bottom of fluid cylinder 2, and the other end of which is communicated with a liquid pump 24, and the output end of which is communicated with a waste liquid tank 25. The end of liquid extraction pipe 23 located in fluid cylinder 2 is located at the center of fluid cylinder 2, and this end of liquid extraction pipe 23 is vertically arranged downward. After starting liquid pump 24, liquid extraction pipe 23 extracts the etching liquid at the inner bottom of fluid cylinder 2, and the etching liquid at the inner bottom of fluid cylinder 2 is the position to participate in chemical reaction, and the effective components of the liquid after etching descend, but still accumulate at the bottom of fluid cylinder 2. Liquid at this position is extracted out by liquid extraction pipe 23, and the unused liquid in the upper strata flows downward to supplement, thereby ensuring the high efficiency of etching. Liquid pump 24 is started once at intervals of time, ensuring that etching liquid and the etching position of screen 10 have enough reaction times.

[0035] A cleaning cylinder 4 is fixed beside the fluid cylinder 2, and a ventilation gap 3 is provided between the fluid cylinder 2 and the cleaning cylinder 4, and the top surface of the screen 10 is located at the lower end of the ventilation gap 3. A fan 31 is fixed at the upper end of the ventilation gap 3, and the air outlet of the fan 31 is docked with the upper end of the ventilation gap 3. When the screen 10 passes between the sealing pad 1 21 and the sealing pad 2 22, the etching liquid will be retained in the slots etched out of the screen 10 to carry out the fluid cylinder 2, and after the fan 31 is started, a downwardly flowing airflow is generated in the ventilation gap 3, thereby blowing the etching liquid in the slots of the screen 10 downwards, and improving the cleanliness of the screen 10.

[0036] The frame 1 is fixed with a liquid collecting hopper 30, which is located below the screen 10 and directly below the ventilation gap 3. The lower end of the liquid collecting hopper 30 is connected to the waste liquid tank 25; the etching liquid blown off is received by the liquid collecting hopper 30 and then stored in the waste liquid tank 25.

[0037] When the screen 10 slides, the etched part first passes through the liquid cylinder 2 and then passes through the cleaning cylinder 4. The bottom of the cleaning cylinder 4 is through-set, and the cleaning cylinder 4 is connected to a water pipe 41. The lower end of the water pipe 41 is located in the cleaning cylinder 4 and is equipped with a spray head 42. Clean water is sprayed into the cleaning cylinder 4 through the spray head 42 to clean the etched screen 10. The frame 1 is fixed with a water collecting bucket 40, and the side wall of the water collecting bucket 40 is fixed to the side wall of the liquid collecting bucket 30. The liquid collecting bucket 30 is located between the bottom plate 20 and the water collecting bucket 40. The water collecting bucket 40 is located below the screen 10 and directly below the cleaning cylinder 4. The lower end of the water collecting bucket 40 is connected to a water tank 5. The water after cleaning is collected by the water collecting bucket 40 and sent to the water tank 5 for storage.

[0038] An annular sealing gasket 3 43 is fixed to the bottom edge of the cleaning cylinder 4, and the cleaning cylinder 4 is pressed against the top surface of the screen 10 through the sealing gasket 3 43; an annular sealing gasket 44 is fixed to the top edge of the water collecting bucket 40, and the water collecting bucket 40 is pressed against the bottom surface of the screen 10 through the sealing gasket 444, and the positions of the sealing gasket 3 43 and the sealing gasket 4 44 are opposite to each other. It should be noted that the width of the sealing gasket 3 43 and the sealing gasket 4 44 is greater than the width of the etched slot, and the sealing gasket 3 43 and the sealing gasket 4 44 are sealed on both sides of the screen 10, so that the water in the cleaning cylinder 4 will not continue to leak outward.

[0039] The end of the water pipe 41 away from the spray head 42 is connected to the inner bottom of the water tank 5. A water pump 51 is installed on the water pipe 41. The water in the water tank 5 is pumped to the spray head 42 by the water pump 51 to spray out, thereby forming a water cycle and reducing the waste of water. Since the screen 10 has been wiped by the sealing gaskets and blown by the wind in the ventilation gap 3 before cleaning, there is less etching liquid remaining on the screen 10, which causes less pollution to the cleaning water, so the water can be recycled; the water in the water tank 5 can be replaced with new water after a long period of use.

[0040] The implementation principle of a local etching system for a screen in an embodiment of the present application is as follows: the screen 10 before etching is a thin-walled metal plate, and an anti-corrosion coating layer is pre-coated on the position on the screen 10 where no etching is to be done. The screen 10 to be etched is fixed on a working frame 12 by a clamp, and the working frame 12 and the screen 10 are driven by an electric cylinder 11 to move horizontally. The screen 10 passes between the cleaning cylinder 4 and the water collecting bucket 40, and passes between the liquid cylinder 2 and the bottom plate 20 to move.

[0041] The etching solution in the fluid cylinder 2 etches the screen 10, and the screen 10 can be moved slowly horizontally, or moved once at a certain interval, and it is necessary to ensure that the screen 10 completes the etching before leaving the fluid cylinder 2. Then the screen 10 passes through the ventilation gap 3, and the etching solution on the screen 10 is blown away by the blower 31, and finally cleaned by the cleaning cylinder 4.

[0042] In summary, through the local etching system of the screen, the local position of the screen 10 can be etched, and the etching range can be increased by movement, reducing the consumption of the etching solution; the etching solution of the required volume can be poured into the liquid cylinder 2 according to the etching amount, reducing waste; the screen 10 is also cleaned after the etching is completed, reducing the subsequent steps, and can also save cleaning water.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A partial etching system for a screen, characterized in that: The invention comprises a frame (1), an electric cylinder (11) and a working frame (12) driven to slide by the electric cylinder (11) are arranged on the frame (1), the working frame (12) is used to install a screen (10), a fluid cylinder (2) and a bottom plate (20) are fixed on the frame (1), the bottom of the fluid cylinder (2) is through-set, an annular sealing gasket 1 (21) is fixed on the bottom surface of the fluid cylinder (2), the fluid cylinder (2) is pressed against the top surface of the screen (10) through the sealing gasket 1 (21); the bottom plate (20) is located below the screen (10) and directly below the fluid cylinder (2), an annular sealing gasket 2 (22) is fixed on the top surface edge of the bottom plate (20), the bottom plate (20) is pressed against the bottom surface of the screen (10) through the sealing gasket 2 (22), and the positions of the sealing gasket 1 (21) and the sealing gasket 2 (22) are opposite to each other.

2. A partial etching system for a screen according to claim 1, characterized in that: The liquid cylinder (2) is connected to a liquid extraction tube (23), the end of which is close to the inner bottom of the liquid cylinder (2), the other end of which is connected to a liquid pump (24), and the output end of which is connected to a waste liquid tank (25).

3. A partial etching system for a screen according to claim 2, characterized in that: The end of the liquid extraction tube (23) located inside the liquid cylinder (2) is located at the center of the liquid cylinder (2), and the end of the liquid extraction tube (23) is arranged vertically downward.

4. A partial etching system for a screen according to claim 1, characterized in that: A cleaning cylinder (4) is fixed beside the liquid cylinder (2). The bottom of the cleaning cylinder (4) is through-set. The cleaning cylinder (4) is connected to a water pipe (41). The lower end of the water pipe (41) is located in the cleaning cylinder (4) and is equipped with a spray head (42).

5. A partial etching system for a screen according to claim 4, characterized in that: The frame (1) is fixed with a water collecting bucket (40), the water collecting bucket (40) is located below the screen (10) and directly below the cleaning cylinder (4), and the lower end of the water collecting bucket (40) is connected to a water tank (5).

6. A partial etching system for a screen according to claim 5, characterized in that: An annular sealing gasket three (43) is fixed to the edge of the bottom surface of the cleaning cylinder (4), and the cleaning cylinder (4) is pressed against the top surface of the screen (10) through the sealing gasket three (43); an annular sealing gasket four (44) is fixed to the edge of the top surface of the water collecting bucket (40), and the water collecting bucket (40) is pressed against the bottom surface of the screen (10) through the sealing gasket four (44), and the positions of the sealing gasket three (43) and the sealing gasket four (44) are opposite to each other.

7. A partial etching system for a screen according to claim 5, characterized in that: The end of the water pipe (41) away from the spray head (42) is connected to the inner bottom of the water tank (5), and a water pump (51) is installed on the water pipe (41).

8. A partial etching system for a screen according to claim 4, characterized in that: A ventilation gap (3) is provided between the liquid cylinder (2) and the cleaning cylinder (4), and the top surface of the screen (10) is located at the lower end of the ventilation gap (3).

9. A partial etching system for a screen according to claim 8, characterized in that: A fan (31) is fixed to the upper end of the ventilation gap (3), and an air outlet of the fan (31) is butted against the upper end of the ventilation gap (3).

10. A partial etching system for a screen according to claim 8, characterized in that: The frame (1) is fixed with a liquid collecting hopper (30), the liquid collecting hopper (30) is located below the screen (10) and directly below the ventilation gap (3), and the lower end of the liquid collecting hopper (30) is connected to the waste liquid tank (25).

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