Quick-changing jig for silk screen printing plate

Abstract

The invention relates to a silk screen printing plate quick-changing jig. The silk screen printing plate quick-changing jig sequentially comprises a screen printing plate jig bottom plate and a screen printing plate jig supporting plate from bottom to top. The middle part of the screen jig supporting plate is provided with a screen clip-shaped frame mechanism through a clip-shaped frame supporting plate mechanism, and a limiting mechanism is arranged on the clip-shaped frame supporting plate mechanism or on the screen jig supporting plate outside the clip-shaped frame supporting plate mechanism; an air cylinder pushing assembly is installed in the middle of at least one side of the screen jig supporting plate. Through the structural arrangement of the concentric-square-shaped frame supporting plate mechanism and the limiting mechanism, the screen printing plate feeding device has high quick-changing performance, the feeding mode of screen printing plates of different specifications is simple, and machining and using of products of various sizes and types can be met.

Description

Technical Field

[0001] The invention relates to the technical field related to screen printing, and in particular to a screen plate quick-changing jig. Background Art

[0002] Screen printing technology has been continuously improved since its origin in the 19th century, from materials to processes, and is currently widely used in screen printing in the photovoltaic industry. Screen printing is to form positive and negative electrodes and back electric fields on the front and back of the battery through printing and sintering, and then conduct the photogenerated electricity through an external optical path to complete the entire process of solar cell photoelectric conversion.

[0003] Screen printing technology uses the basic principle that the electrode part of the screen is permeable to the slurry, while the non-electrode part is not permeable to the slurry. When the printing scraper moves along the screen, the slurry is pressed into the mesh. At the same time, the scraper shears the slurry. The slurry is thixotropic. Under the shear stress of the scraper, the viscosity decreases rapidly. At the moment when the scraper presses down the screen and contacts the silicon wafer, the slurry in the mesh also contacts the silicon wafer. When the scraper passes over the screen, the screen is quickly reset by elastic force and the silicon wafer is out of contact. At this time, the slurry in the mesh is affected by the downward adhesion force of the silicon wafer and gravity on the one hand, and the adhesion force of the screen on the other hand. However, since the viscosity of the slurry is very low at this time, the force exerted by the screen on it is much smaller than the downward force. Therefore, during the rebound of the screen, the slurry in the mesh is transferred to the silicon wafer.

[0004] The widespread application of screen printing technology in the photovoltaic industry has led to a surge in demand for screens, and the complexity and fineness of screen patterns have also greatly increased. Therefore, laser processing technology has begun to be widely used in the processing of screen patterns. The high-precision and high-efficiency processing characteristics of lasers have put forward higher requirements on the equipment and tooling.

[0005] In the process of processing large screen frames, there are many types of screen sizes, and the jigs need to be replaced frequently.

[0006] In view of the above-mentioned defects, the designer actively carried out research and innovation in order to create a silk screen screen quick-change fixture to make it more valuable for industrial use. Summary of the invention

[0007] In order to solve any of the above technical problems, the purpose of the present invention is to provide a screen plate quick-change jig.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] The screen plate quick-change jig includes, from bottom to top, a screen plate jig bottom plate and a screen plate jig support plate;

[0010] A screen return frame mechanism is installed in the middle of the screen jig support plate through a return frame support plate mechanism, and a limit mechanism is installed on the return frame support plate mechanism or on the screen jig support plate outside the return frame support plate mechanism;

[0011] A cylinder push assembly is installed in the middle of at least one side of the screen jig support plate, and the cylinder push assembly is used to tighten the inner screen screen.

[0012] As a further improvement of the present invention, the screen return frame mechanism is a first screen return frame, the limiting mechanism is a screen limiting block, the first screen return frame is installed on the screen jig support plate through the first screen return frame support plate, and a plurality of screen limiting blocks are installed in sequence from the inside to the outside on the screen jig support plate on at least one side outside the first screen return frame; a cylinder pushing assembly is installed on the screen jig support plate on at least one side outside the first screen return frame, the cylinder pushing assembly includes a tightening cylinder installed on the screen jig support plate through a cylinder mounting plate, the tightening cylinder drives the upper cylinder pushing plate to move toward or away from the inner first screen return frame, and a tightening cylinder buffer block is installed on the cylinder pushing plate through the screen pushing block.

[0013] As a further improvement of the present invention, the screen top block is mounted on the cylinder top push plate through a plurality of hexagonal marking pins, and a micro joint is mounted on the cylinder mounting plate on one side of the tightening cylinder.

[0014] As a further improvement of the present invention, the screen return frame mechanism is a second screen return frame, the limiting mechanism is a screen limiting column, the second screen return frame is installed on the screen jig support plate through the second return frame support plate, and a plurality of screen limiting columns are installed in sequence from the inside to the outside on the second return frame support plate outside the second screen return frame; a cylinder pushing assembly is installed on the screen jig support plate on at least one side outside the second screen return frame, the cylinder pushing assembly includes a tightening cylinder installed on the screen jig support plate through a cylinder mounting plate, the tightening cylinder drives the upper cylinder pushing plate to move toward or away from the inner second screen return frame, a frame top plate is installed on the cylinder pushing plate through a frame top plate pad, and a screen pushing strip is installed on the inner side of the frame top plate.

[0015] As a further improvement of the present invention, buffer blocks are installed on both sides of the inner side of the screen pushing strip.

[0016] As a further improvement of the present invention, a planar light source is installed on the bottom plate of the screen fixture at the lower part of the screen return frame mechanism.

[0017] As a further improvement of the present invention, a plurality of buffers are installed at four diagonal positions of the bottom of the bottom plate of the screen fixture through buffer installation plates.

[0018] As a further improvement of the present invention, a power meter is installed on one side of the bottom plate of the screen fixture through a power meter installation plate.

[0019] As a further improvement of the present invention, a pressure reducing valve is installed on the bottom plate of the screen fixture on one side of the cylinder push assembly through a pressure reducing valve installation plate.

[0020] By means of the above scheme, the present invention has at least the following advantages:

[0021] The invention has high quick changeability through the structural arrangement of the return frame support plate mechanism and the limit mechanism, and the feeding method of screens of different specifications is relatively simple, which can meet the processing and use of products of various sizes and types.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a schematic structural diagram of a first embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a second embodiment of the present invention;

[0026] Figure 3 yes Figure 1 The structural diagram of the middle cylinder push assembly;

[0027] Figure 4 yes Figure 3 Structural diagram of the center screen top block and the top cylinder buffer block;

[0028] Figure 5 This is a schematic diagram of 1000mm*1000mm screen processing;

[0029] Figure 6 This is a schematic diagram of 850mm*850mm screen processing;

[0030] Figure 7 This is a schematic diagram of 750mm*750mm screen processing;

[0031] Figure 8This is a schematic diagram of screen processing for 356mm*356mm, 450mm*450mm and 550mm*550mm.

[0032] The meanings of the various reference numerals in the figures are as follows.

[0033] Screen fixture bottom plate 1, screen fixture support plate 2, 3. First return frame support plate, 4. Cylinder push assembly, 5. First screen return frame, 6. Plane light source, 7. Buffer mounting plate, 8. Buffer, 9. Screen limit block, 10. Power meter mounting plate, 11. Power meter, 12. Cylinder mounting plate, 13. Cylinder push plate, 14. Screen top block, 15. Tightening cylinder buffer block, 16. Tightening cylinder, 17. Miniature connector, 18. Hexagonal marking pin, 19. Pressure reducing valve mounting plate, 20. Pressure reducing valve, 21. Second return frame support plate, 22. Second screen return frame, 23. Screen push strip, 24. Frame top plate, 25. Frame top plate pad, 26. Buffer block, 27. Screen limit column. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, rather than all the embodiments. The components of the embodiment of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiment of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0036] like Figures 1 to 8 As shown, a screen plate quick-change jig includes, from bottom to top, a screen plate jig bottom plate 1 and a screen plate jig support plate 2. A screen plate return frame mechanism is installed in the middle of the screen plate jig support plate 2 through a return frame support plate mechanism, and a limit mechanism is installed on the return frame support plate mechanism or on the screen plate jig support plate 2 outside the return frame support plate mechanism. A cylinder push assembly 4 is installed in the middle of at least one side of the screen plate jig support plate 2, and the cylinder push assembly 4 is used to tighten the screen plate on the inner side.

[0037] A planar light source 6 is installed on the bottom plate 1 of the screen jig in the lower part of the screen return frame mechanism. A power meter 11 is installed on one side of the bottom plate 1 of the screen jig through a power meter mounting plate 10.

[0038] A plurality of buffers 8 are installed at the four diagonal positions of the bottom of the screen jig base plate 1 through the buffer mounting plate 7. The reasonable structural reinforcement of the jig base plate and the buffer structure around it can ensure that when different operators operate, the irregular feeding operation will not generate a large impulse to cause deformation of the jig, which greatly extends the service life of the jig.

[0039] A pressure reducing valve 20 is installed on the bottom plate 1 of the screen jig on one side of the cylinder push assembly 4 through a pressure reducing valve mounting plate 19. Different screen frames have different stress bearing capacities. The same cylinder outputs the same pressure when the pressure remains unchanged. The pressure reducing valve next to the tightening cylinder can ensure that the pressure on the upper small screen frame is reduced to reduce the pressure on the screen frame, ensuring that the screen frame is not over-clamped, resulting in deformation and causing the mesh pattern to be unable to be processed correctly.

[0040] The first embodiment of the present invention:

[0041] The screen return frame mechanism is the first screen return frame 5, the limiting mechanism is the screen limiting block 9, the first screen return frame 5 is installed on the screen fixture support plate 2 through the first return frame support plate 3, and a plurality of screen limiting blocks 9 are installed in sequence from the inside to the outside on the screen fixture support plate 2 on at least one side outside the first screen return frame 5; a cylinder pushing assembly 4 is installed on the screen fixture support plate 2 on at least one side outside the first screen return frame 5, the cylinder pushing assembly 4 includes a tightening cylinder 16 installed on the screen fixture support plate 2 through a cylinder mounting plate 12, the tightening cylinder 16 drives the upper cylinder pushing plate 13 to move toward or away from the inner first screen return frame 5, and a tightening cylinder buffer block 15 is installed on the cylinder pushing plate 13 through the screen pushing block 14.

[0042] The screen top block 14 is mounted on the cylinder top push plate 13 through a plurality of hexagonal marking pins 18, and a micro joint 17 is installed on the cylinder mounting plate 12 on one side of the tightening cylinder 16.

[0043] The above is applicable to the processing of screens of 750mm*750mm, 800mm*800mm and 1000mm*1000mm.

[0044] The second embodiment of the present invention:

[0045] The screen return frame mechanism is a second screen return frame 22, and the limiting mechanism is a screen limiting column 27. The second screen return frame 22 is installed on the screen fixture support plate 2 through the second return frame support plate 21. Several screen limiting columns 27 are installed in sequence from the inside to the outside on the second return frame support plate 21 outside the second screen return frame 22; a cylinder push assembly 4 is installed on the screen fixture support plate 2 on at least one side outside the second screen return frame 22, and the cylinder push assembly 4 includes a tightening cylinder 16 installed on the screen fixture support plate 2 through a cylinder mounting plate 12. The tightening cylinder 16 drives the upper cylinder push plate 13 to move toward or away from the inner second screen return frame 22, and a frame top plate 24 is installed on the cylinder push plate 13 through a frame top plate pad 25, a screen push strip 23 is installed on the inner side of the frame top plate 24, and buffer blocks 26 are installed on both sides of the inner side of the screen push strip 23.

[0046] The above is applicable to the processing of 356mm*356mm, 450mm*450mm and 550mm*550mm screens.

[0047] Among them, this device has a fool-proof design, and the limit mechanisms in the quick-change structure have laser engraved position prompts.

[0048] The quick-change structure of the present invention allows a variety of screen frame loading to be switched at any time, taking into account high compatibility and high portability. The proofing time for screens of different specifications is as long as several hours, but the replacement of the screen frame can be completed within 1 minute, and the clamping structure replacement from a large screen frame to a small screen frame can be completed by unscrewing a few screws. The top block on the cylinder has only one screw plus two hexagonal marking pins. During the quick-change process, only the screw position is changed, and the whole is inserted into the new position.

[0049] The working principle of the present invention is briefly described as follows:

[0050] The jig uses the screen jig base plate 1 and the screen jig support plate 2 as the main support of the whole set of jigs, and the main components and clamping mechanisms are installed on the screen jig support plate 2. The overall flatness and verticality with the XY motion platform are based on these two. The first screen return frame 5 supports the mesh of the screen and maintains the flatness. After the first return frame support plate 3 and the first screen return frame 5 are locked together by screws, they are connected to the screen jig support plate 2 and will not be disassembled. They can be used and replaced as a whole, and the flatness can be adjusted by the top screw on the side of the screw hole. The buffers 8 around the jig are used for shock absorption and load bearing to ensure that the impulse during the loading process of the large screen frame affects the flatness of the screen jig support plate 2; the cylinder push assembly 4 on the front and right sides of the jig is a clamping mechanism, which is responsible for clamping and rough positioning of the XY verticality after the screen frame is loaded. The clamping function is achieved through the extension and contraction of the cylinder. The tensioning cylinder 16 will push the screen along the XY direction to the screen limit block 9 during extension to complete the clamping. This is a conventional clamping method for large screen frames. If you need to deal with screen frames of different specifications, you need to change the position of the screen limit block 9 and the relative position of the screen top block 14 and the tensioning cylinder buffer block 15 to deal with unused clamping strokes. If a small screen frame needs to be loaded and used, the first return frame support plate 3 and the first screen return frame 5 are removed as a whole. After removal, the second return frame support plate 21 and the second screen return frame 22 are installed on the screen fixture support plate 2 after being tightened by screws. The second screen return frame 22 supports the mesh of the small screen frame and maintains its flatness. At the same time, the screen top strip on the right side is assembled according to the above-mentioned installation structure and installed as a whole on the original cylinder push plate 13 to complete the quick change. Then, according to the size of the small frame, the appropriate installation position of the screen limit column 27 is selected, and the screen push strip 23 is adjusted to the appropriate position. The clamping and loosening of the small screen frame are completed by the extension and retraction of the tightening cylinder 16.

[0051] The invention has high quick changeability through the structural arrangement of the return frame support plate mechanism and the limit mechanism, and the feeding method of screens of different specifications is relatively simple, which can meet the processing and use of products of various sizes and types.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A screen plate quick-change jig, comprising, from bottom to top, a screen plate jig bottom plate (1) and a screen plate jig support plate (2); Features: A screen return frame mechanism is installed in the middle of the screen jig support plate (2) through a return frame support plate mechanism, and a limit mechanism is installed on the return frame support plate mechanism or on the screen jig support plate (2) outside the return frame support plate mechanism; A cylinder push assembly (4) is installed in the middle of at least one side of the screen jig support plate (2), and the cylinder push assembly (4) is used to tighten the screen screen on the inside.

2. The screen plate quick-change jig according to claim 1, characterized in that: The screen return frame mechanism is a first screen return frame (5), and the limiting mechanism is a screen limiting block (9). The first screen return frame (5) is mounted on a screen fixture support plate (2) via a first return frame support plate (3). A plurality of screen limiting blocks (9) are sequentially mounted from the inside to the outside on the screen fixture support plate (2) on at least one side outside the first screen return frame (5). A cylinder push assembly (4) is mounted on the support plate (2), and the cylinder push assembly (4) comprises a tightening cylinder (16) mounted on the screen jig support plate (2) via a cylinder mounting plate (12), the tightening cylinder (16) drives the cylinder push plate (13) above to move toward or away from the first screen return frame (5) on the inner side, and a tightening cylinder buffer block (15) is mounted on the cylinder push plate (13) via a screen push block (14).

3. The screen plate quick-change jig according to claim 2, characterized in that: The screen top block (14) is mounted on the cylinder top push plate (13) via a plurality of hexagonal marking pins (18), and a micro joint (17) is mounted on the cylinder mounting plate (12) on one side of the tightening cylinder (16).

4. The screen plate quick-change jig according to claim 1, characterized in that: The screen return frame mechanism is a second screen return frame (22), the limiting mechanism is a screen limiting column (27), the second screen return frame (22) is installed on the screen fixture support plate (2) through a second return frame support plate (21), and a plurality of screen limiting columns (27) are installed in sequence from the inside to the outside on the second return frame support plate (21) outside the second screen return frame (22); a plurality of screen limiting columns (27) are installed on the screen fixture support plate (2) on at least one side outside the second screen return frame (22); A cylinder push assembly (4) is provided, the cylinder push assembly (4) comprising a tightening cylinder (16) mounted on a screen jig support plate (2) via a cylinder mounting plate (12), the tightening cylinder (16) driving an upper cylinder push plate (13) to move toward or away from an inner second screen return frame (22), a frame top plate (24) being mounted on the cylinder push plate (13) via a frame top plate pad (25), and a screen push strip (23) being mounted on the inner side of the frame top plate (24).

5. The screen plate quick-change jig according to claim 4, characterized in that: Buffer blocks (26) are installed on both sides of the inner side of the screen push strip (23).

6. The screen plate quick-change jig according to claim 1, characterized in that: A planar light source (6) is installed on the screen jig bottom plate (1) at the lower part of the screen return frame mechanism.

7. The screen plate quick-change jig according to claim 1, characterized in that: A plurality of buffers (8) are installed at four diagonal positions at the bottom of the screen jig bottom plate (1) via buffer installation plates (7).

8. The screen plate quick-change jig according to claim 1, characterized in that: A power meter (11) is installed on one side of the screen jig bottom plate (1) via a power meter installation plate (10).

9. The screen plate quick-change jig according to claim 1, characterized in that: A pressure reducing valve (20) is installed on the screen jig bottom plate (1) on one side of the cylinder push assembly (4) via a pressure reducing valve installation plate (19).

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