Optically clear adhesive (OCA) punching mechanism

Abstract

The embodiment of the utility model belongs to the technical field of OCA (Optical Clear Adhesive) processing. The utility model further relates to an OCA (Optical Clear Adhesive) punching mechanism which comprises a punching knife, a control part is arranged on the punching knife, and the control part is used for controlling the punching depth of the punching knife so as to realize single-layer punching of the OCA by the punching knife. The control part is arranged and used for controlling the punching depth of the punching knife so that single-layer punching of the OCA glue can be achieved through the punching knife, it can be guaranteed that no obvious knife mark exists on the release film when the OCA glue is torn off after punching by controlling the punching depth of the punching knife, and therefore the problem that the OCA glue is taken up is avoided, and the yield of attached finished products is increased; due to the fact that the production yield is improved, material waste and labor cost caused by defective products are reduced, and the overall cost of products is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of OCA glue processing, and more specifically to an OCA glue punching and cutting mechanism. Background Art

[0002] At present, the cost competitiveness in the wearable electronic products industry is becoming increasingly greater. The production yield and efficiency of each accessory material directly affect the cost of the final product. Among them, OCA (optical transparent adhesive) is one of the core accessories in wearable electronic products. The quality of its punching effect directly affects the yield of the bonded finished product.

[0003] In the existing OCA production process, punching is a key step. However, during the punching process, the cutter may carry the OCA glue into the release film, causing the OCA glue to be carried away during the subsequent tearing of the release film, thereby affecting the yield of the finished product. Therefore, we have improved this and proposed an OCA glue punching mechanism.

[0004] For example, the Chinese patent (publication number CN107414929B) discloses the die-cutting process of OCA optical adhesive, and its specification discloses: OCA optical adhesive is one of the important raw materials for touch screens, and making optical acrylic adhesive into a substrate-free tape is a better adhesive for touch screens. It has high clarity, high light transmittance, and a total light transmittance of more than 90%. It also has the advantages of high adhesion, high temperature resistance, and UV resistance. In the production process of OCA optical adhesive, there are problems of bubbles and overflow of glue, and the phenomenon of glue pulling during die-cutting will cause the entire OCA to be scrapped. If there is uneven laying during the film replacement process, its light transmittance and overall quality will be greatly affected. The above patents can prove the defects of the existing technology. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present invention is that the cutting tool may carry the OCA glue into the release film, resulting in the OCA glue being carried away during the subsequent process of tearing off the release film.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An OCA glue punching mechanism comprises: a punching knife, wherein the punching knife is provided with a control unit, and the control unit is used to control the punching depth of the punching knife to achieve a single-layer punching of the OCA glue by the punching knife. The present application sets a control unit, and the control unit is used to control the punching depth of the punching knife to achieve a single-layer punching of the OCA glue by the punching knife. By controlling the punching depth of the punching knife, it can be ensured that when the OCA is torn off after punching, there are no obvious knife marks on the release film, thereby avoiding the problem of OCA glue being carried up and improving the yield of the finished bonding product; since the production yield is improved, the material waste and labor cost caused by defective products are reduced, thereby reducing the overall cost of the product.

[0008] As an improvement of the present invention, the control unit is a control system, and the control system is connected to a hydraulic system that drives the punching cutter, so as to control the punching depth of the punching cutter by controlling the hydraulic system.

[0009] As an improved manner of the present invention, the control part is a control structure, and the control structure is arranged on the punching knife.

[0010] As an improvement of the utility model, the control structure includes a limit plate arranged on one side of the punching knife, a slide groove is opened in the limit plate, a fixing bolt is slidably connected in the slide groove, and one end of the fixing bolt is fixedly connected to the punching knife.

[0011] As an improvement of the utility model, the outer surface of the fixing bolt is threadedly connected with a hand nut, and the hand nut is in contact with a side of the limiting plate away from the punching knife.

[0012] As an improvement of the utility model, a mounting protection structure is further provided on the punching knife, and the mounting protection structure is used to realize the mechanical connection between the punching knife and the hydraulic system.

[0013] As an improvement of the utility model, the installation protection structure includes two connecting shafts respectively fixedly installed on both sides of the punching knife, the outer surfaces of the two connecting shafts are provided with connecting seats through bearing sleeves, one side of the two connecting seats is fixedly connected with a connecting plate, the outer surfaces of the two connecting plates are sleeved with connecting pipes, and a mounting plate is fixedly connected between the two connecting pipes.

[0014] As an improved manner of the utility model, a groove is provided on one side of the mounting plate close to the punching knife, and a plurality of mounting holes are also provided on the mounting plate.

[0015] As an improved manner of the utility model, a fixing piece is provided between the connecting plate, the connecting pipe and the connecting shaft.

[0016] As an improvement of the utility model, the fixing part includes a through hole opened on the connecting plate, a hand bolt is threadedly connected between the connecting pipe and the through hole, two limiting holes are opened on one side of the punching knife, and one end of the hand bolt is plugged into one of the hand bolts.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] The present application sets up a control unit, which is used to control the cutting depth of the punching knife to achieve a single-layer punching of the OCA glue by the punching knife. By controlling the cutting depth of the punching knife, it can be ensured that when the OCA is torn off after punching, there are no obvious knife marks on the release film, thereby avoiding the problem of OCA glue being carried away and improving the yield rate of the finished bonding products. Since the production yield rate is improved, the material waste and labor costs caused by defective products are reduced, thereby reducing the overall cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the OCA glue punching mechanism provided in this application;

[0020] Figure 2 A schematic diagram of the control structure of the OCA glue punching mechanism provided in this application;

[0021] Figure 3 A schematic diagram of the structure of the limiting hole of the OCA glue punching mechanism provided in this application;

[0022] Figure 4 A schematic diagram of the structure of the connecting plate of the OCA glue punching mechanism provided in this application;

[0023] Figure 5 A schematic diagram of the structure of the installation protection structure of the OCA glue punching mechanism provided in this application when protecting the punching cutter;

[0024] Figure 6 This is a schematic diagram of the punching knife of the OCA glue punching mechanism provided in the present application when punching OCA.

[0025] Indicated in the figure:

[0026] 1. Punching knife; 2. Control structure; 201. Limiting plate; 202. Slide groove; 203. Fixing bolt; 204. Hand nut; 5. Installation protection structure; 501. Connecting shaft; 502. Connecting seat; 503. Connecting plate; 504. Connecting pipe; 505. Mounting plate; 506. Groove; 507. Mounting hole; 508. Through hole; 509. Hand bolt; 510. Limiting hole. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] As described in the background technology, punching is a key step in the existing OCA production process. However, during the punching process, the cutting tool may carry the OCA glue into the release film, causing the OCA glue to be carried away during the subsequent tearing of the release film, thereby affecting the yield of the finished bonding product.

[0029] In order to solve this technical problem, the utility model provides an OCA glue punching mechanism, which is applied to the punching of OCA glue.

[0030] Specifically, please refer to Figure 1 , OCA glue punching mechanism specifically includes:

[0031] The punching knife 1 is provided with a control unit, and the control unit is used to control the punching depth of the punching knife 1 to achieve a single-layer punching of the OCA glue by the punching knife 1.

[0032] The OCA glue punching mechanism provided by the utility model is provided with a control unit, and the control unit is used to control the punching depth of the punching knife 1 to realize the single-layer punching of the OCA glue by the punching knife 1. By controlling the punching depth of the punching knife 1, it can be ensured that when the OCA is torn off after punching, there are no obvious knife marks on the release film, thereby avoiding the problem of OCA glue being carried up and improving the yield rate of the finished bonding products; since the production yield rate is improved, the material waste and labor cost caused by defective products are reduced, thereby reducing the overall cost of the product.

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] Embodiment 1 of the OCA glue punching and cutting mechanism of the utility model

[0037] Please refer to Figure 1 The OCA glue punching mechanism of the utility model comprises: a punching knife 1, on which a control unit is arranged, and the control unit is used to control the punching depth of the punching knife 1, so as to realize the punching of a single layer of OCA glue by the punching knife 1. By means of the arranged control unit, the control unit is used to control the punching depth of the punching knife 1, so as to realize the punching of a single layer of OCA glue by the punching knife 1. By controlling the punching depth of the punching knife 1, it can be ensured that when the OCA is torn off after punching, there is no obvious knife mark on the release film, thereby avoiding the problem of the OCA glue being carried up, and improving the yield rate of the finished bonding product; since the production yield rate is improved, the material waste and labor cost caused by defective products are reduced, thereby reducing the overall cost of the product.

[0038] Reference Figure 6 . Figure 6 A in the figure indicates release film, and B indicates OCA glue. When punching the OCA glue with the punching knife 1, the depth of the punching knife 1 is controlled to ensure that there is no obvious knife mark on the release film, and that there is no residual OCA glue on the release film, so as to ensure that there is no glue pulling problem during use;

[0039] Embodiment 2 of the OCA adhesive punching and cutting mechanism of the utility model

[0040] The OCA glue punching mechanism of the utility model further has a control unit which is a control system. The control system is connected to a hydraulic system that drives the punching knife 1 so as to control the cutting depth of the punching knife 1 by controlling the hydraulic system. The hydraulic system is used to drive the punching knife 1 to punch the OCA glue. The application controls the hydraulic system through the control system so that the hydraulic control system can control the cutting stroke of the punching knife 1, thereby reducing the situation where the punching knife 1 punches the release film, thereby reducing the penetration of the OCA glue into the release film by the punching knife 1.

[0041] Embodiment 3 of the OCA glue punching and cutting mechanism of the utility model

[0042] The OCA glue punching mechanism of the utility model is further characterized by: Figure 1 and Figure 2 As shown, the control part is a control structure 2 , which is arranged on the punching knife 1 . The control structure 2 can physically control the punching depth of the punching knife 1 to control the punching depth of the punching knife 1 .

[0043] Further, such as Figure 1 and Figure 2As shown, the control structure 2 includes a limit plate 201 arranged on one side of the punching knife 1, a slide groove 202 is opened in the limit plate 201, a fixing bolt 203 is slidably connected in the slide groove 202, one end of the fixing bolt 203 is fixedly connected to the punching knife 1, and the setting of the slide groove 202 enables relative movement between the limit plate 201 and the fixing bolt 203, thereby adjusting the height of the limit plate 201.

[0044] Further, such as Figure 1 and Figure 2 As shown, the outer surface of the fixing bolt 203 is threadedly connected with a hand nut 204, and the hand nut 204 contacts the side of the limit plate 201 away from the punching knife 1. The position of the limit plate 201 can be fixed by the hand nut 204. After loosening the hand nut 204, the fixation of the limit plate 201 by the hand nut 204 can be released, and then the height of the limit plate 201 can be adjusted. By adjusting the distance between the bottom of the limit plate 201 and the bottom of the punching knife 1, the punching depth of the punching knife 1 can be adjusted.

[0045] Embodiment 4 of the OCA glue punching and cutting mechanism of the utility model

[0046] The OCA glue punching mechanism of the utility model is further characterized by: Figure 1 and Figure 4 As shown, the punching blade 1 is also provided with a mounting protection structure 5, which is used to realize the mechanical connection between the punching blade 1 and the hydraulic system. Figure 4 In this state, the protective structure 5 is installed with a mechanical connection with the hydraulic system, so that the hydraulic system can drive the punching knife 1 to rise and fall to complete the punching of the OCA glue. After the protective structure 5 is installed and separated from the hydraulic system, the protective structure 5 can protect the blade part of the punching knife 1 to reduce the possibility of accidental injury or damage caused by bumps.

[0047] Further, such as Figure 1 and Figure 4 As shown, the installation protection structure 5 includes two connecting shafts 501 respectively fixedly installed on both sides of the punching knife 1, the outer surfaces of the two connecting shafts 501 are provided with connecting seats 502 through bearing sleeves, one side of the two connecting seats 502 is fixedly connected with a connecting plate 503, the outer surfaces of the two connecting plates 503 are sleeved with connecting pipes 504, and a mounting plate 505 is fixedly connected between the two connecting pipes 504, and the connecting seat 502 can rotate around the connecting shaft 501.

[0048] Further, such as Figure 4 As shown, a groove 506 is provided on one side of the mounting plate 505 close to the punching knife 1, and a plurality of mounting holes 507 are also provided on the mounting plate 505. The arrangement of the mounting holes 507 enables the mounting plate 505 to be mounted to the hydraulic system by bolts, and the hydraulic system may adopt a hydraulic cylinder.

[0049] Furthermore, fixing parts are provided between the connecting plate 503 , the connecting tube 504 and the connecting shaft 501 , and the fixing parts are used to fix the position of the connecting tube 504 .

[0050] Further, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the fixing part includes a through hole 508 opened on the connecting plate 503, a hand bolt 509 is threadedly connected between the connecting pipe 504 and the through hole 508, two limiting holes 510 are opened on one side of the punching knife 1, one end of the hand bolt 509 is plugged into one of the hand bolts 509, and after the hand bolt 509 is unscrewed, the mounting plate 505 can be rotated to adjust the shape of the mounting protection structure 5.

[0051] Install protective structure 5. For details, refer to Figure 1 ,exist Figure 1 In the present embodiment, the mounting protection structure 5 is installed on the hydraulic system by passing the bolt through the mounting hole 507. The hydraulic system drives the punching knife 1 to move up and down through the mounting protection structure 5 to punch the OCA glue. After the mounting protection structure 5 is separated from the hydraulic system, the hand-tightening bolt 509 is loosened to separate the hand-tightening bolt 509 from the through hole 508, and the mounting plate 505 is pulled away from the punching knife 1. Then, the mounting plate 505 is rotated around the connecting shaft 501 so that the mounting plate 505 rotates to the blade of the punching knife 1, and the mounting plate 505 is pushed upward so that the hand-tightening bolt 509 is aligned with the through hole 508 and the limiting hole 510. At this time, the blade of the punching knife 1 is inserted into the mounting hole 507, and then the hand-tightening bolt 509 is tightened so that the hand-tightening bolt 509 is connected to the limiting hole 510 and the through hole 508. Figure 6 As shown, at this time, the mounting plate 505 can protect the punching knife 1. When it is used again, loosen the hand-tightening bolt 509 to separate the hand-tightening bolt 509 from the through hole 508, pull the mounting plate 505 away from the punching knife 1, and then rotate the mounting plate 505 around the connecting shaft 501 to rotate the connecting pipe 504 to a horizontal position, push the mounting plate 505 toward the punching knife 1, so that the hand-tightening bolt 509 is aligned with the through hole 508 and the limiting hole 510, and then tighten the hand-tightening bolt 509 to connect the hand-tightening bolt 509 with the limiting hole 510 and the through hole 508. Figure 1 shown.

[0052] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An OCA glue punching mechanism, characterized in that: include: A punching knife (1), wherein a control unit is provided on the punching knife (1), and the control unit is used to control the punching depth of the punching knife (1) so as to achieve single-layer punching of the OCA glue by the punching knife (1).

2. The OCA glue punching mechanism according to claim 1, characterized in that: The control unit is a control system, and the control system is connected to a hydraulic system that drives the punching knife (1), so as to control the punching depth of the punching knife (1) by controlling the hydraulic system.

3. The OCA glue punching mechanism according to claim 2, characterized in that: The control part is a control structure (2), and the control structure (2) is arranged on the punching knife (1).

4. The OCA glue punching mechanism according to claim 3, characterized in that: The control structure (2) comprises a limit plate (201) arranged on one side of the punching blade (1), a slide groove (202) being provided in the limit plate (201), a fixing bolt (203) being slidably connected in the slide groove (202), and one end of the fixing bolt (203) being fixedly connected to the punching blade (1).

5. The OCA glue punching mechanism according to claim 4, characterized in that: The outer surface of the fixing bolt (203) is threadedly connected with a hand nut (204), and the hand nut (204) is in contact with a side of the limiting plate (201) away from the punching knife (1).

6. The OCA glue punching mechanism according to claim 5, characterized in that: The punching blade (1) is also provided with a mounting protection structure (5), and the mounting protection structure (5) is used to achieve a mechanical connection between the punching blade (1) and the hydraulic system.

7. The OCA glue punching mechanism according to claim 6, characterized in that: The mounting protection structure (5) comprises two connecting shafts (501) respectively fixedly mounted on both sides of the punching blade (1); the outer surfaces of the two connecting shafts (501) are provided with connecting seats (502) via bearing sleeves; one side of the two connecting seats (502) is fixedly connected with a connecting plate (503); the outer surfaces of the two connecting plates (503) are sleeved with connecting pipes (504); and a mounting plate (505) is fixedly connected between the two connecting pipes (504).

8. The OCA glue punching mechanism according to claim 7, characterized in that: A groove (506) is provided on one side of the mounting plate (505) close to the punching knife (1), and a plurality of mounting holes (507) are also provided on the mounting plate (505).

9. The OCA glue punching mechanism according to claim 8, characterized in that: A fixing piece is provided between the connecting plate (503), the connecting pipe (504) and the connecting shaft (501).

10. The OCA glue punching mechanism according to claim 9, characterized in that: The fixing member comprises a through hole (508) formed on the connecting plate (503); a hand bolt (509) is threadedly connected between the connecting pipe (504) and the through hole (508); two limiting holes (510) are formed on one side of the punching knife (1); one end of the hand bolt (509) is plugged into one of the hand bolts (509).

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