A back adhesive jig

Abstract

The application relates to the technical field of back adhesive attachment, in particular to a back adhesive jig which comprises A plates and B plates which are matched in structure, the A plates are uniformly provided with a plurality of first grooves matched with decorative parts, the B plate is used for fixing a back adhesive sheet composed of a plurality of back adhesives, second grooves are respectively arranged on the B plate and correspond to single back adhesives on the back adhesive sheet, clamping pieces are respectively arranged at both ends of the second grooves and correspond to extension positions of arc-shaped protrusions at both ends of the decorative parts, the A plates and the B plates are pressed together, the back adhesive of not less than ten decorative parts can be pasted at one time, in the pressing process of the A plates and the B plates, the back adhesive and the decorative parts are aligned one by one, errors are reduced, the clamping pieces apply controllable pressure, the back adhesive and the arc-shaped protrusions of the decorative parts are tightly attached, the back adhesive jig is suitable for complex bonding scenes of special-shaped decorative parts, and the back adhesive jig has the characteristics of improving the attachment efficiency.

Description

Technical Field

[0001] This application relates to the field of adhesive bonding technology, and in particular to an adhesive jig. Background Technology

[0002] In the manufacturing process of electronic products, adhesive bonding of decorative parts is a common process. It is mainly used to provide adhesion so that the decorative parts can be firmly attached to various surface materials.

[0003] In related technologies, traditional adhesive application methods typically rely on manual operation. However, there are complex, irregularly shaped parts, such as the SM673 earpiece decorative part, which has extended arc-shaped protrusions at both ends, making adhesive application very difficult. Manually applying each part one by one is not only inefficient but also makes it difficult to guarantee the quality of the application. General-purpose adhesive fixtures also cannot completely cover or firmly adhere to the complex shape of irregularly shaped parts. Although automated adhesive application equipment can be customized for irregularly shaped parts, it is costly and lacks flexibility.

[0004] Existing adhesive bonding processes suffer from the following problems: manual bonding is inefficient and produces inconsistent quality; general-purpose fixtures cannot accommodate complex-shaped parts; and automated equipment is costly and lacks flexibility. With the increasing demands for precision and aesthetics in electronic products, there is an urgent need for an auxiliary solution that can efficiently and accurately bond adhesive to irregularly shaped parts. Utility Model Content

[0005] To improve adhesion efficiency, this application provides an adhesive-backed fixture.

[0006] The adhesive-backed fixture provided in this application adopts the following technical solution: An adhesive backing fixture includes an A plate and a B plate with mutually matched structures. The A plate has a plurality of first grooves evenly distributed to fit decorative parts. The B plate is used to fix an adhesive backing sheet composed of a plurality of adhesive backings. The B plate has a second groove corresponding to a single adhesive backing on the adhesive backing sheet. The two ends of the second groove are respectively provided with interlocking parts corresponding to the extension positions of the arc-shaped protrusions at both ends of the decorative parts. The A plate and the B plate can press against each other to complete the adhesive backing of no less than ten decorative parts in a single operation.

[0007] By adopting the above technical solution, it can be ensured that the adhesive backing and decorative parts are aligned one by one when the A board and B board are pressed together, reducing errors; the interlocking parts apply controllable pressure during the pressing process, so that the adhesive backing and the arc-shaped protruding surface of the decorative parts are tightly bonded, which is suitable for complex bonding scenarios of irregularly shaped decorative parts, and effectively improves the bonding efficiency and bonding quality compared with traditional adhesive backing bonding process.

[0008] Preferably, the left and right edges of the A plate and the B plate are integrally formed with priority contact steps, so that there is a certain gap after the A plate and the B plate are pressed together.

[0009] By adopting the above technical solution, it is ensured that the edges of plate A and plate B make contact first in the initial stage of pressing. The gap retained after pressing can reduce stress concentration caused by rigid contact, reduce the risk of deformation of jigs or decorative parts, and thus ensure the flatness of the bonding surface.

[0010] Preferably, the A plate has a third groove corresponding to the interlocking member, the cross-section of the third groove is rectangular, and the area is larger than that of the interlocking member.

[0011] By adopting the above technical solution, the area of ​​the third groove is larger than that of the interlocking part, providing displacement margin for the pressing process. This can automatically compensate for the dimensional deviation of the decorative part or the adhesive backing, ensuring the forced alignment of the interlocking part with the arc-shaped protrusion.

[0012] Preferably, the corners of the third groove are all cleared.

[0013] By adopting the above technical solution, the clearance treatment provides additional space for the pressing process of plate A and plate B, reducing the occurrence of hard interference between the interlocking parts and the arc protrusion due to tolerance accumulation or slight deformation at the corner, ensuring the reliability of forced alignment, and improving the fault tolerance of the fixture.

[0014] Preferably, two positioning posts are respectively provided at intervals at the upper and lower ends of the pressing surface of the B plate, and the backing sheet and the A plate are provided with matching positioning holes at the positions corresponding to the positioning posts.

[0015] By adopting the above technical solution, the positioning post and the positioning hole shaft hole are matched to ensure that the absolute position of plate A and plate B are aligned during pressing, reducing the occurrence of misalignment between decorative parts and adhesive backing due to manual placement deviation.

[0016] Preferably, the positioning post and the positioning hole can be replaced with magnetic elements of opposite poles, and the magnetic elements of different poles are respectively embedded in the pressing surfaces of the A plate and the B plate.

[0017] By adopting the above technical solution, the heteropolar magnetic element is automatically attracted by magnetic force, eliminating the rigid contact between the positioning post and the hole, and reducing the decrease in accuracy or the shortening of the fixture life caused by friction.

[0018] Preferably, the interlocking element is made of rigid plastic or rubber material.

[0019] By adopting the above technical solutions, the low shrinkage rate of rigid plastics can maintain geometric stability for a long time, reducing the risk of adhesive failure caused by deformation; rubber can automatically compensate for the dimensional deviation of decorative parts through elastic deformation, making it suitable for complex curved surfaces such as arc protrusions, and absorbing stress impacts, reducing the risk of breakage of arc protrusions.

[0020] Preferably, plate A and plate B are rotatably connected by a hinge structure, wherein the hinge structure is disposed on one side edge of plate A and plate B.

[0021] By adopting the above technical solution, the hinge structure serves as the rotation axis, enabling plate A and plate B to rotate stably around the connecting axis, thereby achieving rotational pressing.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The multi-slot design ensures that the adhesive backing and decorative parts are aligned one by one when the A board and B board are pressed together, reducing errors; the interlocking parts apply controllable pressure during the pressing process, so that the adhesive backing and the curved surface of the decorative parts are tightly bonded, which is suitable for complex bonding scenarios of irregularly shaped decorative parts, and effectively improves the bonding efficiency and bonding quality compared with traditional adhesive backing bonding process. 2. Priority contact steps ensure that the edges of plate A and plate B make contact first during the initial pressing stage. The gap retained after pressing reduces stress concentration caused by completely rigid contact, reduces the risk of deformation of the fixture or decorative parts, and thus ensures the flatness of the bonding surface. 3. By using the axial hole fit of the positioning post and positioning hole, the absolute position of plate A and plate B is ensured during pressing, reducing the occurrence of misalignment between the decorative parts and the adhesive backing due to manual placement deviation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a comparative schematic diagram of the decorative part, the adhesive backing sheet, and the finished product in the embodiments of this application.

[0025] Figure 3 This is a schematic diagram illustrating a usage scenario of an embodiment of this application.

[0026] Figure 4 This is a schematic diagram showing the fit between plate A, plate B, and the hinge structure in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Plate A; 11. First groove; 12. Preferred contact step; 13. Positioning hole; 14. Third groove; 2. Plate B; 21. Second groove; 22. Engaging element; 23. Positioning post; 3. Hinge structure; 4. Decorative element; 41. Arc-shaped protrusion; 5. Backing film. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses an adhesive-backed jig. (Refer to...) Figure 1-3In this embodiment, an adhesive backing fixture consists of a matching A plate 1 and a B plate 2. The A plate 1 has ten first grooves 11 that are adapted to the decorative part 4, and the first grooves 11 are arranged in a 5*2 linear matrix. The B plate 2 is used to fix an adhesive backing sheet 5 composed of multiple adhesive backings, and a second groove 21 is provided for each individual adhesive backing on the adhesive backing sheet 5. The two ends of the second groove 21 are respectively fixed with interlocking parts 22 at the extension positions of the arc-shaped protrusions 41 at both ends of the decorative part 4.

[0030] Correspondingly, board A1 uses the first groove 11 to achieve batch positioning of decorative parts 4. The shape of the groove matches the shape of the decorative parts 4 to ensure placement stability. Board B2 uses the second groove 21 to correspond one by one with the adhesive backing on the adhesive backing sheet 5. During operation, board A1 and board B2 are pressed together, and precise alignment is achieved through the spatial matching of the two groove matrices. During the pressing process, the adhesive backing is tightly bonded to the decorative parts 4 under the clamping action of the two end clamping parts 22 and the arc-shaped protrusions 41 of the decorative parts 4. At the same time, the clamping parts 22 also provide lateral restraint to reduce displacement. A single pressing process allows for the adhesive backing of up to ten decorative parts 4 to be applied, with an average output of 6000 pieces per person.

[0031] Therefore, this structure achieves simultaneous processing of multiple decorative parts 4 through matrix layout, and improves the positioning accuracy of decorative parts 4 and adhesive by using groove contouring design, reducing errors; the interference fit between the interlocking part 22 and the arc protrusion 41 ensures that the adhesive is evenly stressed during the bonding process, thereby achieving a tight fit between the adhesive and the curved surface of the arc protrusion 41 of the decorative part 4; by replacing manual operation with mechanical interlocking, the problem of weak bonding or inconsistent quality caused by uneven force is reduced, which effectively improves the bonding efficiency and bonding quality compared with traditional adhesive bonding process, and is suitable for batch bonding of irregular decorative parts 4.

[0032] In the process described above, both the left and right edges of plate A1 and plate B2 are integrally formed with priority contact steps 12 to ensure that the edges of plate A1 and plate B2 make contact first in the initial stage of pressing, and achieve preliminary docking through physical boundaries. After pressing, plate A1 and plate B2 have a certain gap, which can disperse the pressing force, reduce stress concentration caused by rigid contact, reduce the risk of deformation of the fixture or decorative part 4, thereby ensuring the flatness of the bonding surface and improving the yield rate. The gap structure also provides extra space for fine adjustment of position after pressing to adapt to decorative parts 4 of different thicknesses or materials, and enhance the versatility of the fixture.

[0033] On the other hand, the A plate 1 has a third groove 14 corresponding to the number and position of the biting parts 22. The cross section of the third groove 14 is rectangular and the area is larger than that of the biting parts 22. This structural design provides displacement margin for the pressing process, which can automatically compensate for the size deviation of the decorative parts 4 or the adhesive backing, and ensure the forced alignment of the biting parts 22 with the arc protrusions 41. In addition, the rectangular groove maximizes the contact surface with the biting parts 22, which can evenly distribute the biting force and reduce deformation.

[0034] Furthermore, the corners of the third groove 14 are all cleared to reduce the occurrence of hard interference between the interlocking part 22 and the arc-shaped protrusion 41 due to tolerance accumulation or slight deformation at the corners, thus ensuring the reliability of forced alignment. Combined with the area redundancy design of the third groove 14, the corner clearing can further absorb assembly deviations and improve the fault tolerance of the fixture.

[0035] Specifically, two positioning posts 23 are installed at intervals at the upper and lower ends of the pressing surface of plate B2. Matching positioning holes 13 are provided on the adhesive backing sheet 5 and plate A1 at the positions corresponding to the positioning posts 23. Therefore, the positioning posts 23 and positioning holes 13 form a dual positioning mechanism through shaft-hole cooperation, enabling rapid assembly and reducing manual adjustment time. Furthermore, mechanical positioning and structural constraints ensure that the absolute positions of plate A1 and plate B2 are aligned during pressing, reducing relative sliding between plate A1 and plate B2, and preventing misalignment of the decorative part 4 and the adhesive backing due to manual placement errors.

[0036] On the other hand, the positioning post 23 and the positioning hole 13 can be replaced with magnetic elements of opposite poles (not shown in the attached figure), with the magnetic elements of different poles respectively embedded in the pressing surfaces of plate A 1 and plate B 2. Therefore, the magnetic elements of opposite poles are automatically attracted by magnetic force to complete the pressing and fixing of plate A 1 and plate B 2, and the repeatability of positioning is improved compared with the mechanical positioning method; moreover, the magnetic attraction structure does not require physical alignment, eliminating the rigid contact between the positioning post 23 and the hole, reducing the decrease in accuracy or the shortening of the fixture life caused by friction; the embedded design of the magnetic elements also simplifies the fixture structure and facilitates replacement.

[0037] Specifically, in this embodiment, the interlocking component 22 is made of rubber. Rubber has a high elastic modulus and can generate controllable deformation during the interlocking process, automatically adapting to the tolerance range of the arc-shaped protrusion 41, ensuring a tight fit between the adhesive backing and the arc-shaped protrusion 41 of the decorative component 4; the wear resistance of rubber can not only withstand high-frequency compression operations, but also absorb the compression impact through hysteresis, reducing the risk of breakage of the arc-shaped protrusion 41 or other brittle components.

[0038] In addition, refer to Figure 4 Plate A1 and Plate B2 can be rotatably connected by a hinge structure 3 fixed to the edge of an adjacent side.

[0039] Correspondingly, when A plate 1 and B plate 2 are pressed together, they only need to rotate and close along the hinge axis. The first groove 11 matrix of A plate 1 will automatically align with the second groove 21 of B plate 2. During the pressing process, the hinge provides a stable closing trajectory to ensure that the interlocking part 22 accurately engages with the arc protrusion 41 of the decorative part 4. When demolding, simply rotate the fixture in the opposite direction to open it.

[0040] Therefore, the hinge structure 3 serves as the rotation axis, enabling plate A 1 and plate B 2 to rotate stably around the connecting axis, thereby achieving rotational pressing. This simplifies the pressing process and improves the repeatability of positioning. The rotational opening and closing design also reduces fixture wear and extends service life.

[0041] The implementation principle of the adhesive backing fixture in this application embodiment is as follows: Plate A1 achieves batch positioning of decorative parts 4 through the first groove 11. The shape of the groove matches the shape of the decorative parts 4 to ensure placement stability. Plate B2 corresponds one-to-one with the individual adhesive backings on the adhesive backing sheet 5 through the second groove 21. During operation, Plate A1 and Plate B2 are pressed together, and precise alignment is achieved through the spatial matching of the two groove matrices. During the pressing process, the adhesive backing is tightly bonded to the decorative parts 4 under the clamping action of the two end clamping parts 22 and the arc-shaped protrusions 41 of the decorative parts 4. At the same time, the clamping parts 22 also provide lateral restraint to reduce displacement. A single pressing process allows for the adhesive backing of up to ten decorative parts 4, with an average output of 6000 pieces per person.

[0042] In summary, this structure achieves simultaneous processing of multiple decorative parts 4 through a matrix layout, and improves the positioning accuracy of the decorative parts 4 and the adhesive by using a groove contouring design, thus reducing errors. The interference fit between the interlocking part 22 and the arc-shaped protrusion 41 ensures that the adhesive is subjected to uniform force during the bonding process, thereby achieving a tight fit between the adhesive and the curved surface of the arc-shaped protrusion 41 of the decorative part 4. By replacing manual operation with mechanical interlocking, the problem of weak bonding or inconsistent quality caused by uneven force is reduced. Compared with traditional adhesive bonding processes, this structure effectively improves the bonding efficiency and bonding quality, and is suitable for batch bonding scenarios of irregularly shaped decorative parts 4.

[0043] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adhesive-backed jig, characterized in that, The system includes a plate A (1) and a plate B (2) that are structurally matched. The plate A (1) has a plurality of first grooves (11) that are evenly distributed to match the decorative parts (4). The plate B (2) is used to fix a backing sheet (5) composed of a plurality of backing adhesives. A second groove (21) is provided on each backing adhesive on the backing sheet (5). The two ends of the second groove (21) are respectively provided with interlocking parts (22) at the extension positions of the arc protrusions (41) at both ends of the decorative parts (4). The plate A (1) and the plate B (2) can complete the backing adhesive bonding of no less than ten decorative parts (4) in one go by pressing them together.

2. The adhesive-backed fixture according to claim 1, characterized in that, The left and right edges of the A plate (1) and the B plate (2) are integrally formed with priority contact steps (12), so that there is a certain gap after the A plate (1) and the B plate (2) are pressed together.

3. The adhesive-backed fixture according to claim 1, characterized in that, The A plate (1) has a third groove (14) corresponding to the interlocking member (22). The cross-section of the third groove (14) is rectangular and its area is larger than that of the interlocking member (22).

4. The adhesive-backed fixture according to claim 3, characterized in that, The corners of the third groove (14) are all cleared.

5. The adhesive-backed jig according to claim 1, characterized in that, Two positioning posts (23) are respectively provided at intervals at the upper and lower ends of the pressing surface of the B plate (2). The backing film (5) and the A plate (1) are provided with matching positioning holes (13) at the positions corresponding to the positioning posts (23).

6. The adhesive-backed jig according to claim 5, characterized in that, The positioning post (23) and the positioning hole (13) can be replaced by magnetic elements with opposite poles, and the magnetic elements with different poles are respectively embedded in the pressing surfaces of the A plate (1) and the B plate (2).

7. The adhesive-backed jig according to claim 1, characterized in that, The interlocking element (22) is made of hard plastic or rubber material.

8. The adhesive-backed jig according to claim 1, characterized in that, The A plate (1) and the B plate (2) can be rotatably connected by a hinge structure (3), which is located on one side edge of the A plate (1) and the B plate (2).

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