Pressure-sensitive adhesive pasting jig

Abstract

The utility model discloses a kind of pressure-sensitive adhesive pasting jigs, including clamping mould component, insert component, bearing assembly, guide component and compression driving assembly;Clamping mould component includes panel, front mould, back mould and bottom plate, wherein front mould and back mould constitute internal cavity after moulding, each functional component is assembled therein;Insert component is set up up and down, its bonding surface adapts MIM piece profile and is equipped with exhaust groove;Bearing assembly is equipped with multiple bearing stations, each station is equipped with positioning groove, can support batch pasting;Guide component ensures moulding accuracy;Compression driving assembly is driven by air cylinder to eject piece, and lower insert is driven to realize uniform compression, and it is equipped with elastic buffer piece shock absorption;The jig can effectively eliminate bubble, prevent pressure-sensitive adhesive from deviating in compression process, can greatly improve pressure-sensitive adhesive pasting accuracy and efficiency, suitable for automated production.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a pressure-sensitive adhesive mounting fixture. Background Technology

[0002] In the production of metal injection molded (MIM) parts, pressure-sensitive adhesives are often applied to specific surfaces to meet subsequent assembly or functional requirements. Traditional adhesive application methods rely heavily on manual operation or simple fixtures, resulting in low bonding accuracy, air bubbles, adhesive misalignment, and weak adhesion, severely impacting product yield and consistency. Especially when MIM parts have complex structures and varying curvatures on the adhesive surface, conventional methods struggle to achieve complete bonding between the adhesive and the workpiece, with residual air leading to adhesion failure. Furthermore, existing fixtures often lack precise guidance and pressure control mechanisms, easily causing deformation of the MIM part or damage to the adhesive during the pressing process. Additionally, they can only process a single workpiece at a time, resulting in low efficiency and difficulty adapting to the high-speed requirements of automated production lines. Therefore, there is an urgent need for a pressure-sensitive adhesive application fixture with a reasonable structure, precise positioning, venting function, and support for multi-station operations to overcome these technical bottlenecks. Utility Model Content

[0003] To solve the above problems, this utility model provides a pressure-sensitive adhesive mounting fixture, including a clamping assembly, an insert assembly, a bearing assembly, a guiding assembly, and a pressing drive assembly; The clamping assembly includes a panel, a front mold, a rear mold, and a base plate. The front mold and the rear mold are respectively assembled between the panel and the base plate. The front mold is detachably fixed to the panel, and the rear mold is detachably fixed to the base plate. The front mold and the rear mold together form an internal cavity. The insert assembly, the load-bearing assembly, the guide assembly, and the pressing drive assembly are all assembled in the internal cavity. The insert assembly is used to press the MIM part tightly during the pressing process. The load-bearing assembly is used to carry the adhesive material and adapt to the adhesive surface of the MIM part. The guide assembly is used to provide precise guidance for the movement of the pressing drive assembly. The pressing drive assembly is used to drive the load-bearing assembly and the MIM part to achieve tight pressing, so as to eliminate the gap between the adhesive material and the MIM part.

[0004] Preferably, the insert assembly includes an upper insert and a lower insert. The upper insert passes through the front mold and is detachably fixed to the panel. The lower insert is detachably fixed to the pressing drive assembly. Both the upper insert and the lower insert are provided with a mating surface that matches the contour of the MIM part. The mating surface is provided with an exhaust groove that communicates with the outside to discharge air between the adhesive material and the MIM part.

[0005] Preferably, the front mold has a first clearance hole corresponding to the upper insert, and the rear mold has a second clearance hole corresponding to the lower insert.

[0006] Preferably, the carrier component includes a carrier member, which has multiple carrier stations that are evenly distributed along the length of the carrier member to simultaneously carry multiple adhesive materials and MIM parts.

[0007] Preferably, the bearing station is provided with a positioning groove that matches the shape of the adhesive material, and the edge of the positioning groove is provided with a guide chamfer to guide the placement of the adhesive material.

[0008] Preferably, the carrier is detachably fixed to the front mold by locking members, and the locking members are evenly distributed along the edge of the carrier.

[0009] Preferably, the guide assembly includes a guide hole and a guide post. The guide hole is located on the front mold, and the guide post is located on the rear mold. The guide hole and the guide post are fitted with a clearance, thereby providing precise guidance and positioning for the mold closing and opening actions of the front mold and the rear mold, and ensuring the alignment accuracy of the insert assembly and the load-bearing assembly.

[0010] Preferably, the pressing drive assembly includes a drive component, a support pad, a drive push plate, and multiple ejector components. The support pad is assembled between the drive push plate and the base plate. The ejector components are located on the drive push plate, and the top of the ejector components is connected to the lower insert. The drive component drives the drive push plate, and then the ejector components drive the lower insert to move axially along the guide assembly to achieve pressing and separation actions.

[0011] Preferably, the ejector is detachably fixed to the drive push plate (specifically via threads), and the top of the ejector is properly fitted to the non-adhesive surface of the MIM component.

[0012] Preferably, the pressing drive assembly further includes an elastic buffer, which is sleeved on the ejector and used to buffer the impact force during the pressing process.

[0013] The beneficial effects are as follows: This application, by integrating a clamping assembly, insert assembly, carrier assembly, guide assembly, and pressing drive assembly, can achieve high-precision, bubble-free bonding of MIM parts and pressure-sensitive adhesive materials. The insert assembly is positioned vertically, with its bonding surface matching the contour of the MIM part, and is equipped with venting grooves connecting to the outside, effectively expelling air between the adhesive material and the workpiece during the pressing process and preventing bubble formation. The carrier assembly has multiple stations with positioning grooves and guide chamfers, allowing for simultaneous processing of multiple workpieces, significantly improving production efficiency and ensuring accurate and non-offset placement of the adhesive material. The guide assembly uses guide holes and guide pillars with clearance fit to ensure accurate alignment during mold closing and prevent misalignment. The pressing drive assembly uses a cylinder to drive the push plate and ejector, smoothly pressing the lower insert, and is equipped with elastic buffers to absorb impact force and protect the MIM part from damage. Simultaneously, the ejector is arranged according to the principle of balanced force distribution to ensure uniform pressure distribution. The overall structure is modular and detachable, facilitating maintenance and replacement, suitable for automated equipment, and can significantly improve bonding quality and production efficiency, possessing strong practicality and promotional value. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a cross-sectional view of this application; Figure 2 This is a schematic diagram of the exploded structure of this application; In the picture: 1. MIM components; 2. Clamping assembly; 21. Panel; 22. Front mold; 221. First clearance hole; 23. Rear mold; 231. Second clearance hole; 24. Base plate; 25. Internal cavity; 3. Inlay assembly; 31. Upper inlay; 32. Lower inlay; 4. Load-bearing components; 41. Load-bearing parts; 411. Load-bearing station; 5. Guide assembly; 51. Guide hole; 52. Guide post; 6. Pressing drive assembly; 61. Support pad; 62. Drive push plate; 63. Ejector. Detailed Implementation

[0015] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0016] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0017] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] Example Please see Figure 1 and Figure 2 , Figure 1 This is a cross-sectional view of this application. Figure 2 This is an exploded structural diagram of the present application. The pressure-sensitive adhesive mounting fixture provided by this utility model includes a clamping assembly 2, an insert assembly 3, a bearing assembly 4, a guiding assembly 5, and a pressing drive assembly 6. These components work together to accurately mount the pressure-sensitive adhesive material onto the MIM component 1, ensuring no air bubbles or gaps between the adhesive material and the MIM component 1, thereby improving mounting quality and efficiency.

[0019] See also Figure 1 and 2 The clamping assembly 2 includes a panel 21, a front mold 22, a rear mold 23, and a base plate 24. The front mold 22 and the rear mold 23 are respectively assembled between the panel 21 and the base plate 24. Specifically, the front mold 22 is detachably fixed to the lower surface of the panel 21 by bolts, and the rear mold 23 is detachably fixed to the upper surface of the base plate 24 by bolts. After the front mold 22 and the rear mold 23 are closed, they form an internal cavity 25 to accommodate other functional components. This detachable connection method facilitates the maintenance and replacement of the front mold 22 and the rear mold 23, and the internal cavity 25 provides a stable working environment, ensuring that other components are not affected by external interference during the pressing process. The base plate is provided with mounting holes for fixing the pressure-sensitive adhesive mounting fixture to the machine base of the automated equipment.

[0020] The insert assembly 3 includes an upper insert 31 and a lower insert 32. The upper insert 31 passes through the first clearance hole 221 on the front mold 22 and is detachably fixed to the panel 21 by bolts. The lower insert 32 is detachably fixed to the ejector 63 of the pressing drive assembly 6. In this embodiment, the lower insert 32 and the ejector 63 are connected by threads. The mating surfaces of both the upper insert 31 and the lower insert 32 are adapted to the contour of the MIM part 1. The mating surfaces are provided with grid-like venting grooves, one end of which extends to the edge of the mating surface and communicates with the internal cavity 25, ultimately achieving ventilation to the outside. The upper insert 31 and the lower insert 32 are used to press the MIM part 1 tightly during the pressing process to prevent its displacement. The venting grooves can effectively discharge air between the adhesive and the MIM part 1, avoiding the generation of air bubbles and improving the mounting quality. To improve the service life of the fixture, both the upper insert and the lower insert can be made of high wear-resistant hard alloy.

[0021] The support assembly 4 includes a support member 41, which is detachably and fixedly connected to the front mold 22 by locking members. The locking members are evenly distributed along the edge of the support member 41, and in this embodiment, bolts are specifically used as the locking members. The support member 41 has multiple support stations 411, which are evenly distributed along the length of the support member 41. Each support station 411 has a positioning groove adapted to the shape of the adhesive material, and the edge of the positioning groove has a guide chamfer. Multiple support stations 411 allow for the simultaneous support of multiple adhesive materials and MIM parts 1, improving production efficiency. The positioning groove and guide chamfer facilitate precise placement of the adhesive material and prevent it from shifting during the pressing process. The even distribution of locking members along the edge of the support member 41 ensures a more stable connection of the support member 41 and reduces the impact of vibration.

[0022] The guide assembly 5 includes guide holes 51 and guide posts 52. Guide holes 51 are located at the four corners of the front mold 22, and guide posts 52 are located at corresponding positions on the rear mold 23. Guide posts 52 and the rear mold 23 are fixed with an interference fit, while guide holes 51 and guide posts 52 are clearance-fitted, with a clearance range of 0.02-0.05 mm. The guide assembly 5 provides precise guidance and positioning for the mold closing and opening actions of the front mold 22 and the rear mold 23, ensuring the alignment accuracy of the insert assembly 3 and the support assembly 4. This avoids misalignment during the pressing process, improving mounting consistency and reliability.

[0023] The pressing drive assembly 6 includes a drive component (not shown in the figure), a support pad 61, a drive push plate 62, and multiple ejector components 63. The support pad 61 is assembled between the drive push plate 62 and the base plate 24 to transmit and distribute pressure. The ejector components 63 are detachably fixed to the drive push plate 62 by threads. The top of the ejector component 63 is threaded to the lower insert 32. The top of the ejector component 63 is coated with a TiN wear-resistant coating. Multiple ejector components 63 are arranged according to the principle of force balance of MIM components. The drive component is fixed on the base plate 24. The drive component can be a standard cylinder or a standard drive motor. In this embodiment, a standard cylinder is selected. The standard cylinder includes a cylinder body and a piston rod. The piston rod is connected to the cylinder body. The cylinder body is fixed to the bottom of the base plate 24 by bolts. The top of the piston rod is welded to the center of the drive push plate 62. The drive component drives the drive push plate 62 to move axially along the guide assembly 5. The pressing drive assembly 6 also includes an elastic buffer, specifically a spring in this embodiment, which is sleeved in the middle of the ejector 63, located between the drive push plate 62 and the lower insert 32. The drive assembly moves the lower insert 32 via the drive push plate 62 and the ejector 63, realizing the pressing and separating actions. Multiple ejectors 63 are arranged according to the principle of force balance for the MIM part 1, ensuring uniform distribution of pressing force and preventing deformation of the MIM part 1. The elastic buffer can buffer the impact force during the pressing process, protecting the MIM part 1 and the adhesive material. The wear-resistant coating on the top of the ejector 63 can reduce wear on the ejector 63 and extend its service life.

[0024] In use, the adhesive material is placed in the positioning groove of the carrier 41, and the MIM part 1 is positioned between the upper insert 31 and the lower insert 32. The drive unit is activated, pushing the drive push plate 62 upward, which in turn drives the lower insert 32 to move axially along the guide assembly 5 via the ejector 63, thus tightly pressing the MIM part 1 against the adhesive material. The venting groove discharges air, and the elastic buffer absorbs the impact. After pressing is completed, the drive unit moves in the opposite direction, causing the lower insert 32 to reset, completing the mounting process.

[0025] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A pressure-sensitive adhesive mounting fixture, characterized in that, Includes clamping assembly, insert assembly, load-bearing assembly, guide assembly and pressing drive assembly; The clamping assembly includes a panel, a front mold, a rear mold, and a base plate. The front mold and the rear mold are respectively assembled between the panel and the base plate. The front mold is detachably fixed to the panel, and the rear mold is detachably fixed to the base plate. The front mold and the rear mold together form an internal cavity. The insert assembly, the support assembly, the guide assembly, and the pressing drive assembly are all assembled in the internal cavity. The insert assembly is used to press the MIM part tightly during the pressing process. The support assembly is used to support the adhesive material and adapt to the adhesive surface of the MIM part. The guide assembly is used to provide precise guidance for the movement of the pressing drive assembly. The pressing drive assembly is used to drive the support assembly to achieve tight pressing with the MIM part.

2. The pressure-sensitive adhesive mounting fixture according to claim 1, characterized in that, The insert assembly includes an upper insert and a lower insert. The upper insert passes through the front mold and is detachably fixed to the panel. The lower insert is detachably fixed to the pressing drive assembly. Both the upper insert and the lower insert are provided with a mating surface that matches the contour of the MIM part. The mating surface is provided with an exhaust groove that communicates with the outside.

3. The pressure-sensitive adhesive mounting fixture according to claim 2, characterized in that, The front mold has a first clearance hole corresponding to the upper insert, and the rear mold has a second clearance hole corresponding to the lower insert.

4. The pressure-sensitive adhesive mounting fixture according to claim 1, characterized in that, The bearing assembly includes a bearing member, which has multiple bearing stations. The multiple bearing stations are evenly distributed along the length of the bearing member and are used to simultaneously bear multiple adhesive materials and MIM parts.

5. The pressure-sensitive adhesive mounting fixture according to claim 4, characterized in that, The bearing station is provided with a positioning groove adapted to the shape of the adhesive material, and the edge of the positioning groove is provided with a guide chamfer to guide the placement of the adhesive material.

6. The pressure-sensitive adhesive mounting fixture according to claim 4, characterized in that, The carrier is detachably and fixedly connected to the front mold by locking members, which are evenly distributed along the edge of the carrier.

7. The pressure-sensitive adhesive mounting fixture according to claim 1, characterized in that, The guiding assembly includes a guide hole and a guide post. The guide hole is located on the front mold, and the guide post is located on the rear mold. The guide hole and the guide post are in clearance fit.

8. The pressure-sensitive adhesive mounting fixture according to claim 2, characterized in that, The pressing drive assembly includes a drive component, a support pad, a drive push plate, and multiple ejector components. The support pad is assembled between the drive push plate and the base plate. The ejector components are disposed on the drive push plate, and the top of the ejector components is connected to the lower insert. The drive component drives the drive push plate, and then the ejector components drive the lower insert to move axially along the guide assembly to achieve pressing and separation actions.

9. The pressure-sensitive adhesive mounting fixture according to claim 8, characterized in that, The ejector is detachably fixed to the drive push plate, and the top of the ejector is properly fitted to the non-adhesive surface of the MIM component.

10. The pressure-sensitive adhesive mounting fixture according to claim 8, characterized in that, The pressing drive assembly also includes an elastic buffer, which is sleeved on the ejector.

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