Quick-change jig for silk screen printing plate

Abstract

The utility model relates to a quick-changing jig for a silk screen printing plate. The 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 is high in quick-changing performance, the feeding mode of screen printing plates of different specifications is simple, and the screen printing plate feeding device can meet machining and using requirements of products of various sizes and types.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of silk screen printing, especially to a silk screen printing plate quick change fixture. BACKGROUND

[0002] The silk screen printing technology has been continuously improved from material to process since its origin in the 19th century, and is currently widely used in screen printing in the photovoltaic industry. The silk screen printing is to form positive and negative electrodes and back electric field on the front and back of the cell by printing and sintering, and then to output the photo-generated electricity through the external light path, to complete the whole process of solar cell photoelectric conversion.

[0003] The silk screen printing technology uses the basic principle that the electrode part of the silk screen is transparent to the paste, and the non-electrode part is not transparent to the paste. When the printing squeegee moves along the silk screen, the paste is pressed into the mesh hole, and the squeegee produces shearing action on the paste. The paste has thixotropy, and its viscosity rapidly decreases under the action of the shearing stress of the squeegee. At the moment when the squeegee contacts the silicon wafer, the paste in the mesh hole also contacts the silicon wafer. After the squeegee sweeps across the silk screen, the silk screen is quickly reset by the elastic force and the silicon wafer is separated from the contact. At this time, the paste in the mesh hole is subjected to the adhesion force of the silicon wafer and the gravity on the one hand, and the adhesion force of the silk screen on the other hand. However, since the viscosity of the paste is very low at this time, the force of the silk screen on the paste is much smaller than the downward force. Therefore, during the elastic return of the silk screen, the paste in the mesh hole is transferred to the silicon wafer.

[0004] The wide application of the silk screen printing technology in the photovoltaic industry has led to a sharp increase in the demand for screen printing plates, and the complexity and fineness of the screen printing plate patterns have also been greatly improved. Therefore, laser processing technology has been widely used in the processing of silk screen patterns. The high precision and high efficiency of laser processing have made higher requirements for the tooling of the equipment.

[0005] During the processing of the screen printing plate of a large screen frame, the size and type of the screen printing plate are various, and the fixture needs to be frequently replaced.

[0006] In view of the above defects, the present design person actively researches and innovates to create a silk screen printing plate quick change fixture, so that it has more industrial utilization value. CONTENT OF THE UTILITY MODEL

[0007] To solve any of the above technical problems, the purpose of the utility model is to provide a silk screen printing plate quick change fixture.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A silk screen printing plate quick change fixture sequentially includes a screen printing plate fixture bottom plate and a screen printing plate fixture support plate from bottom to top;

[0010] A screen frame back frame mechanism is installed on the middle part of the screen tool support plate through a back frame support plate mechanism, and a limiting mechanism is installed on the screen tool support plate or outside the screen tool support plate.

[0011] A cylinder pushing assembly is installed on at least one middle part of the screen tool support plate, and the cylinder pushing assembly is used for tightly pushing the screen.

[0012] As a further improvement of the utility model, the screen frame back frame mechanism is a first screen frame back frame, the limiting mechanism is a screen limiting block, the first screen frame back frame is installed on the screen tool support plate through a first back frame support plate, and a plurality of screen limiting blocks are sequentially installed from inside to outside on the screen tool support plate outside at least one side of the first screen frame back frame; a cylinder pushing assembly is installed on the screen tool support plate outside at least one side of the first screen frame back frame, and the cylinder pushing assembly comprises a tight cylinder which is installed on the screen tool support plate through a cylinder mounting plate; the tight cylinder drives a cylinder pushing plate above to move towards or away from the first screen frame back frame inside, and a tight cylinder buffer block is installed on the cylinder pushing plate through a screen top block.

[0013] As a further improvement of the utility model, the screen top block is installed on the cylinder pushing plate through a plurality of inner hexagonal marker pins, and a micro connector is installed on the cylinder mounting plate on one side of the tight cylinder.

[0014] As a further improvement of the utility model, the screen frame back frame mechanism is a second screen frame back frame, the limiting mechanism is a screen limiting column, the second screen frame back frame is installed on the screen tool support plate through a second back frame support plate, and a plurality of screen limiting columns are sequentially installed from inside to outside on the second back frame support plate outside the second screen frame back frame; a cylinder pushing assembly is installed on the screen tool support plate outside at least one side of the second screen frame back frame, and the cylinder pushing assembly comprises a tight cylinder which is installed on the screen tool support plate through a cylinder mounting plate; the tight cylinder drives a cylinder pushing plate above to move towards or away from the second screen frame back frame inside, a frame top plate is installed on the cylinder pushing plate through a frame top plate pad block, and a screen push strip is installed on the inside of the frame top plate.

[0015] As a further improvement of the utility model, a buffer block is installed on both sides of the inside of the screen push strip.

[0016] As a further improvement of the utility model, a plane light source is installed on the screen tool bottom plate below the screen frame back frame mechanism.

[0017] As a further improvement of the utility model, a plurality of buffers are installed on four diagonal positions of the bottom of the screen tool bottom plate through a buffer mounting plate.

[0018] As a further improvement of the present application, the power meter is installed on one side of the screen jig bottom plate through the power meter mounting plate.

[0019] As a further improvement of the present application, the pressure reducing valve is installed on the screen jig bottom plate on one side of the cylinder pushing assembly through the pressure reducing valve mounting plate.

[0020] By the above scheme, the present application has at least the following advantages:

[0021] The present application has high quick-change property by the structure of the back-shaped frame support plate mechanism and the limiting mechanism, and the screen feeding mode of different specifications is relatively simple, which can meet the processing and use of products of various sizes.

[0022] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiment of the present application and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation on the scope, for those skilled in the art, without creative labor, other related drawings can also be obtained according to these drawings.

[0024] Figure 1 is the structure schematic view of the first embodiment of the present application;

[0025] Figure 2 is the structure schematic view of the second embodiment of the present application;

[0026] Figure 3 is the structure schematic view of the cylinder pushing assembly in the Figure 1

[0027] Figure 4 is the structure schematic view of the screen top block and the tight cylinder buffer block in the Figure 3

[0028] is the screen processing schematic view of 1000mm*1000mm; Figure 5

[0029] is the screen processing schematic view of 850mm*850mm; Figure 6

[0030] is the screen processing schematic view of 750mm*750mm; Figure 7

[0031] ​​Figure 8 These are schematic diagrams for screen printing processes of 356mm*356mm, 450mm*450mm, and 550mm*550mm.

[0032] The meanings of the labels in the figures are as follows.

[0033] 1. Screen printing fixture base plate; 2. Screen printing fixture support plate; 3. First screen forming frame support plate; 4. Cylinder push assembly; 5. First screen forming frame; 6. Planar light source; 7. Buffer mounting plate; 8. Buffer; 9. Screen limiting 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 socket mark pin; 19. Pressure reducing valve mounting plate; 20. Pressure reducing valve; 21. Second screen forming frame support plate; 22. Second screen forming frame; 23. Screen push bar; 24. Frame top plate; 25. Frame top plate pad; 26. Buffer block; 27. Screen limiting post. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] like Figures 1-8 As shown, a quick-change screen printing fixture includes, from bottom to top, a screen printing fixture base plate 1 and a screen printing fixture support plate 2. A screen printing frame mechanism is mounted on the middle of the support plate 2 via a frame support plate mechanism. A limiting mechanism is installed on the frame support plate mechanism or on the support plate 2 outside the frame support plate mechanism. A cylinder pushing assembly 4 is installed on at least one side of the support plate 2, and the cylinder pushing assembly 4 is used to tighten the inner screen printing plate.

[0037] A planar light source 6 is installed on the screen jig base plate 1 below the screen back frame mechanism.

[0038] A plurality of buffers 8 are installed on the screen jig base plate 1 at four diagonal corners at the bottom thereof through buffer installation plates 7. The reasonable structural reinforcement of the jig base plate, plus the buffer structure around the periphery, can ensure that when different operators operate, non-standard loading operations produce a large impulse to deform the jig, greatly extending the service life of the jig.

[0039] A pressure reducing valve 20 is installed on the screen jig base plate 1 on one side of the air cylinder jacking assembly 4 through a pressure reducing valve installation plate 19. Different screen frames have different stress bearing capacities, and the same air cylinder outputs the same pressure under constant pressure. The pressure reducing valve beside the jacking air cylinder can ensure that the pressure is reduced to reduce the pressure bearing capacity of the screen frame when a small screen frame is used, so as to prevent the screen frame from being clamped too tightly and deformed to cause the screen pattern to be unable to be correctly processed.

[0040] The first embodiment of the utility model:

[0041] The screen back frame mechanism is a first screen back frame 5, the limiting mechanism is a screen limiting block 9, the first screen back frame 5 is installed on the screen jig support plate 2 through a first back frame support plate 3, and a plurality of screen limiting blocks 9 are installed on the screen jig support plate 2 outside at least one side of the first screen back frame 5 from inside to outside in sequence; an air cylinder jacking assembly 4 is installed on the screen jig support plate 2 outside at least one side of the first screen back frame 5, and the air cylinder jacking assembly 4 comprises a jacking air cylinder 16 installed on the screen jig support plate 2 through an air cylinder installation plate 12, the jacking air cylinder 16 drives the air cylinder jacking plate 13 above to move towards or away from the first screen back frame 5 inside, and a jacking air cylinder buffer block 15 is installed on the air cylinder jacking plate 13 through a screen top block 14.

[0042] The screen top block 14 is installed on the air cylinder jacking plate 13 through a plurality of inner hexagonal marker pins 18, and a micro connector 17 is installed on the air cylinder installation plate 12 on one side of the jacking air cylinder 16.

[0043] The above is suitable for the processing of screen frames with sizes of 750mm*750mm, 800mm*800mm and 1000mm*1000mm.

[0044] The second embodiment of the utility model:

[0045] The second screen back frame mechanism is a second screen back frame 22, the limiting mechanism is a screen limiting column 27, the second screen back frame 22 is installed on the screen jig support plate 2 through a second back frame support plate 21, and a plurality of screen limiting columns 27 are sequentially installed on the second back frame support plate 21 outside the second screen back frame 22 from inside to outside; the air cylinder pushing assembly 4 is installed on the screen jig support plate 2 on at least one side of the second screen back frame 22, the air cylinder pushing assembly 4 comprises a clamping air cylinder 16 installed on the screen jig support plate 2 through an air cylinder installation plate 12, the clamping air cylinder 16 drives the air cylinder pushing plate 13 above to move towards or away from the second screen back frame 22 inside, the frame top plate 24 is installed on the air cylinder pushing plate 13 through a frame top plate cushion block 25, the screen pushing strip 23 is installed on the inside of the frame top plate 24, and the buffer block 26 is installed on both sides of the screen pushing strip 23 inside.

[0046] The above is suitable for processing of screens with sizes of 356mm*356mm, 450mm*450mm and 550mm*550mm.

[0047] In the fast-changing structure, the limiting mechanisms are provided with laser line position prompts.

[0048] The fast-changing structure of the utility model can switch various screen frames at any time, has high compatibility and high portability, screen proofing of different specifications takes several hours, but the screen frame can be replaced in 1 min, and the clamping structure can be replaced from a large screen frame to a small screen frame by only unscrewing a few screws, the top block of the air cylinder is only one screw plus two internal hexagonal marking pins, only the screw position is replaced during the fast-changing process, and the whole is inserted into a new position.

[0049] The working principle of the utility model is briefly described as follows:

[0050] The jig supports the screen plate jig base plate 1 and the screen plate jig support plate 2 as the main body of the whole jig, and the main components and clamping mechanisms are all installed on the screen plate jig support plate 2, and the overall flatness and perpendicularity to the XY motion platform are based on the two, the first screen plate back frame 5 plays a supporting role and a flatness maintaining role for the screen cloth of the screen plate, and the first back frame support plate 3 and the first screen plate back frame 5 are connected with the screen plate jig support plate 2 after being locked together by screws and cannot be disassembled, are used as a whole, are replaced as a whole, and the adjustment of the flatness is realized by the top screw on the side of the screw hole. The bumper 8 around the jig is used for damping and bearing to ensure that the momentum in the large screen frame feeding process affects the flatness of the screen plate jig support plate 2; the cylinder push assembly 4 on the front side and the right side of the jig is a clamping mechanism, and is responsible for clamping and XY verticality coarse positioning after the screen frame is fed, and the clamping function is realized through the extension and retraction of the cylinder, and the screen plate is pushed to the screen plate limiting block 9 in the XY direction during the extension of the tightening cylinder 16, and the clamping is completed. This is a conventional clamping mode of a large screen frame, and if different specifications of screen frames are needed, the positions of the screen plate limiting block 9 and the relative positions of the screen plate top block 14 and the tightening cylinder buffer block 15 need to be replaced to cope with different clamping strokes. If small screen frames need to be fed and used, the first back frame support plate 3 and the first screen plate back frame 5 are removed as a whole, the second back frame support plate 21 and the second screen plate back frame 22 are locked by screws after being removed, and are integrally installed on the screen plate jig support plate 2, the second screen plate back frame 22 plays a supporting role and a flatness maintaining role for the screen cloth of the small screen frame, the right screen plate top strip is assembled and integrally installed on the original cylinder push plate 13 according to the above installation structure, the quick replacement is completed, the screen plate limiting column 27 is selected according to the size of the small frame, the screen plate push strip 23 is adjusted to the appropriate position, and the clamping and loosening of the small screen frame are completed through the extension and retraction of the tightening cylinder 16.

[0051] The screen plate jig has high quick replacement, the screen plate feeding mode of different specifications is relatively simple, and the processing and use of various size types of products can be met.

[0052] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the term "first", "second" and so on are only for the purpose of description, and can not be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" and so on can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0053] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0054] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, it should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the technical principles of the utility model, can make several improvements and variations, these improvements and variations also should be regarded as the protection scope of the utility model.

Claims

1. A screen printing plate quick-change jig, comprising a screen printing plate jig base plate (1) and a screen printing plate jig support plate (2) from bottom to top; characterized in that: a screen printing plate back frame mechanism is installed on the middle of the screen printing plate jig support plate (2) through a back frame support plate mechanism, a limiting mechanism is installed on the screen printing plate jig support plate (2) on the back frame support plate mechanism or outside the back frame support plate mechanism; a pneumatic cylinder pushing assembly (4) is installed on at least one middle of the screen printing plate jig support plate (2), and the pneumatic cylinder pushing assembly (4) is used for tightly pushing the inner screen printing plate. The screen printing plate back frame mechanism is a first screen printing plate back frame (5), the limiting mechanism is a screen printing plate limiting block (9), the first screen printing plate back frame (5) is installed on the screen printing plate jig support plate (2) through a first back frame support plate (3), a plurality of screen printing plate limiting blocks (9) are sequentially installed from inside to outside on the screen printing plate jig support plate (2) on at least one side of the first screen printing plate back frame (5), a pneumatic cylinder pushing assembly (4) is installed on the screen printing plate jig support plate (2) on at least one side of the first screen printing plate back frame (5), the pneumatic cylinder pushing assembly (4) comprises a tight pneumatic cylinder (16) installed on the screen printing plate jig support plate (2) through a pneumatic cylinder mounting plate (12), the tight pneumatic cylinder (16) drives an upper pneumatic cylinder pushing plate (13) to move towards or away from the inner first screen printing plate back frame (5), and a tight pneumatic cylinder buffer block (15) is installed on the pneumatic cylinder pushing plate (13) through a screen printing plate pushing block (14).

2. The screen changing tool according to claim 1, wherein The screen printing plate pushing block (14) is installed on the pneumatic cylinder pushing plate (13) through a plurality of inner hexagonal marker pins (18), and a micro connector (17) is installed on the pneumatic cylinder mounting plate (12) on one side of the tight pneumatic cylinder (16).

3. The screen changing tool according to claim 2, wherein The screen printing plate back frame mechanism is a second screen printing plate back frame (22), the limiting mechanism is a screen printing plate limiting column (27), the second screen printing plate back frame (22) is installed on the screen printing plate jig support plate (2) through a second back frame support plate (21), a plurality of screen printing plate limiting columns (27) are sequentially installed from inside to outside on the second back frame support plate (21) outside the second screen printing plate back frame (22), a pneumatic cylinder pushing assembly (4) is installed on the screen printing plate jig support plate (2) on at least one side of the second screen printing plate back frame (22), the pneumatic cylinder pushing assembly (4) comprises a tight pneumatic cylinder (16) installed on the screen printing plate jig support plate (2) through a pneumatic cylinder mounting plate (12), the tight pneumatic cylinder (16) drives an upper pneumatic cylinder pushing plate (13) to move towards or away from the inner second screen printing plate back frame (22), a frame top plate (24) is installed on the pneumatic cylinder pushing plate (13) through a frame top plate cushion block (25), and a screen printing plate pushing strip (23) is installed on the inner side of the frame top plate (24).

4. The screen changing tool according to claim 1, wherein Buffer blocks (26) are installed on both sides of the inner side of the screen printing plate pushing strip (23).

5. The screen changing tool according to claim 4, wherein A planar light source (6) is installed on the screen printing plate jig base plate (1) inside and below the screen printing plate back frame mechanism.

6. The screen changing tool of claim 1, wherein, ​ 7. The screen changing tool according to claim 1, wherein Several buffers (8) are installed through buffer mounting plates (7) at four diagonal positions of the bottom of the screen jig base plate (1).

8. The screen changing tool according to claim 1, wherein A power meter (11) is installed through a power meter mounting plate (10) on one side of the screen jig base plate (1).

9. The screen changing tool according to claim 1, wherein A pressure reducing valve (20) is installed through a pressure reducing valve mounting plate (19) on the screen jig base plate (1) on one side of the cylinder pushing assembly (4).

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