Automatic glue brushing device for heat-conducting gasket

Abstract

The utility model provides an automatic glue brushing device for a heat-conducting gasket. The device comprises a release film unwinding structure, an automatic glue brushing structure, a gasket unwinding structure and a calendering structure, the release film unwinding structure is used for unwinding a first release film; the automatic glue brushing structure comprises a workbench, a release film guide wheel, a trough, a scraper and a height adjusting assembly; the scraper is connected with the movable end of the height adjusting assembly. The release film guide wheel is used for guiding the unreeled first release film to the trough; the material groove is used for pouring a sizing material to the surface of the first release film; the scraper is used for scraping a sizing material on the surface of the first release film; the gasket unwinding structure is used for unwinding the heat-conducting gasket; and the calendaring structure is used for pressing and pulling the unreeled heat-conducting gasket and the glued first release film. According to the gluing device, gluing can be conducted on the conveyed release film, the conveyed heat-conducting gasket and the glued release film are pressed, the viscosity-removed heat-conducting gasket is obtained, the production efficiency is effectively improved, and meanwhile the product consistency is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of thermal pad processing equipment, and in particular to an automatic adhesive application device for thermal pads. Background Technology

[0002] Thermal pads are widely used in the electronics, electrical, and communications industries, especially for heat dissipation and sealing in devices such as chips, integrated circuits, and power modules. Due to their excellent thermal conductivity, thermal pads effectively dissipate heat, ensuring stable equipment operation. In the electrical industry, thermal pads are used for sealing and heat dissipation in high-voltage electrical appliances such as high-voltage switches, effectively ensuring the stable operation of electrical equipment. In the communications industry, thermal pads are used for sealing and heat dissipation in base station equipment, antenna equipment, etc., significantly improving the transmission efficiency and stability of communication equipment.

[0003] Removable adhesive thermal pads are products with an adhesive layer added to the surface of the thermal pad. These products have lower surface tack and can be adjusted for positioning as needed, making the installation of the thermal pads easier and smoother.

[0004] Currently, the production of release tack thermal pads typically relies on manual application of adhesive. Operators manually apply release tack material to the surface of the thermal pad using a screen, and after the material cures to form a release tack layer, a release film is then attached to the surface for storage. However, this method is time-consuming and cannot meet the needs of large-scale production. Furthermore, the amount of adhesive applied may be uneven, resulting in poor product consistency. Utility Model Content

[0005] In view of the aforementioned problems, this application is made to provide an automatic adhesive application device for thermal pads that overcomes or at least partially solves the problems, comprising:

[0006] An automatic adhesive application device for a thermally conductive pad includes: a release film unwinding structure, an automatic adhesive application structure, a pad unwinding structure, and a calendering structure. The release film unwinding structure is used to unwind a first release film. The automatic adhesive application structure includes a worktable, a release film guide wheel, a material trough, a scraper, and a height adjustment component. The release film guide wheel, the material trough, and the height adjustment component are respectively installed above the worktable. The scraper is connected to the movable end of the height adjustment component. The release film guide wheel is used to guide the unwound first release film to the material trough. The material trough is used to pour adhesive onto the surface of the first release film. The scraper is used to smooth the adhesive on the surface of the first release film. The height adjustment component is used to adjust the distance between the scraper and the first release film. The pad unwinding structure is used to unwind the thermally conductive pad. The calendering structure is used to press and pull the unwound thermally conductive pad and the adhesive-applied first release film together.

[0007] Preferably, the height adjustment assembly includes a cylinder and a support rod; the cylinder is mounted on the worktable; one end of the support rod is connected to the output end of the cylinder, and the other end is connected to the scraper; the scraper moves linearly under the drive of the cylinder.

[0008] Preferably, the scraper is a comma scraper.

[0009] Preferably, the calendering structure includes a support, a calendering motor, an active calendering roll, a transmission assembly, and a passive calendering roll; the calendering motor, the active calendering roll, and the passive calendering roll are respectively mounted on the support; the active calendering roll is connected to the output end of the calendering motor and rotates under the drive of the calendering motor; the passive calendering roll is connected to the active calendering roll through the transmission assembly and rotates under the drive of the active calendering roll and the transmission assembly; the active calendering roll and the passive calendering roll are arranged opposite to each other on both sides of the thermally conductive pad and the first release film after adhesive application.

[0010] Preferably, the calendering structure further includes a feeding platform; the feeding platform is mounted on the bracket; the feeding platform is used to guide the first release film after applying adhesive to the active calendering roller and the passive calendering roller.

[0011] Preferably, the calendering structure further includes a gasket guide wheel; the gasket guide wheel is mounted on the bracket; the gasket guide wheel is used to guide the thermally conductive gasket to the active calendering roll and the passive calendering roll.

[0012] Preferably, the release film unwinding structure is mounted on the bracket.

[0013] Preferably, the gasket unwinding structure is mounted on the bracket.

[0014] This application has the following advantages:

[0015] In the embodiments of this application, in contrast to the low production efficiency and poor product consistency of existing thermal pads, this application provides a solution using an automated processing device, specifically: "An automatic adhesive application device for thermal pads, comprising: a release film unwinding structure, an automatic adhesive application structure, a pad unwinding structure, and a calendering structure; the release film unwinding structure is used to unwind a first release film; the automatic adhesive application structure includes a worktable, a release film guide wheel, a material trough, a scraper, and a height adjustment component; the release film guide wheel, the material trough, and the height adjustment component are respectively installed on the... Above the workbench; the scraper is connected to the movable end of the height adjustment component; the release film guide wheel is used to guide the unwound first release film to the material trough; the material trough is used to pour the adhesive onto the surface of the first release film; the scraper is used to smooth the adhesive on the surface of the first release film; the height adjustment component is used to adjust the distance between the scraper and the first release film; the gasket unwinding structure is used to unwind the thermally conductive gasket; the calendering structure is used to press and pull the unwound thermally conductive gasket and the glued first release film. The automatic adhesive application device can continuously apply adhesive to the conveying release film and press the conveying thermally conductive gasket with the glued release film to obtain a de-adhesive thermally conductive gasket, effectively improving production efficiency while ensuring product consistency. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an automatic glue application device provided in one embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure of a finished thermal pad provided in one embodiment of this application.

[0019] The reference numerals in the accompanying drawings are as follows:

[0020] 1. Release film unwinding structure; 2. Automatic glue application structure; 21. Workbench; 22. Release film guide roller; 23. Material trough; 24. Scraper; 25. Cylinder; 26. Support rod; 3. Gasket unwinding structure; 4. Calendering structure; 41. Support; 42. Active calendering roller; 43. Passive calendering roller; 44. Feeding platform; 45. Gasket guide roller; 51. Second release film; 52. Thermal pad layer; 53. Adhesive removal layer; 54. First release film. Detailed Implementation

[0021] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] The inventors discovered through analysis of existing technologies that there is a lack of automated processing equipment on the market for producing de-adhesive thermal pads, resulting in low production efficiency and poor product consistency.

[0023] Reference Figure 1 This application illustrates an automatic adhesive application device for a thermally conductive pad according to an embodiment of the present application. The device includes: a release film unwinding structure 1, an automatic adhesive application structure 2, a pad unwinding structure 3, and a calendering structure 4. The release film unwinding structure 1 is used to unwind a first release film 54. The automatic adhesive application structure 2 includes a worktable 21, a release film guide wheel 22, a material trough 23, a scraper 24, and a height adjustment component. The release film guide wheel 22, the material trough 23, and the height adjustment component are respectively mounted above the worktable 21. The scraper 24 and the movable end of the height adjustment component... The release film guide wheel 22 is used to guide the unwound first release film 54 to the material trough 23; the material trough 23 is used to pour the adhesive onto the surface of the first release film 54; the scraper 24 is used to smooth the adhesive on the surface of the first release film 54; the height adjustment component is used to adjust the distance between the scraper 24 and the first release film 54; the gasket unwinding structure 3 is used to unwind the heat-conducting gasket; the calendering structure 4 is used to press and pull the unwound heat-conducting gasket and the glued first release film 54.

[0024] The automatic glue application device can continuously apply glue to the conveyed release film and press the conveyed thermal pad with the glued release film to obtain a de-adhesive thermal pad, which effectively improves production efficiency and ensures product consistency.

[0025] The automatic adhesive application device for a thermally conductive pad in this exemplary embodiment will now be further described.

[0026] In this embodiment, the height adjustment assembly includes a cylinder 25 and a support rod 26. The cylinder 25 is mounted on the worktable 21. One end of the support rod 26 is connected to the output end of the cylinder 25, and the other end is connected to the scraper 24. The scraper 24 moves linearly under the drive of the cylinder 25. When it is necessary to adjust the distance between the scraper 24 and the first release film 54, the cylinder 25 is activated to drive the scraper 24 to move closer to or further away from the first release film 54 until the required distance is reached, and then the cylinder 25 is deactivated.

[0027] In this embodiment, the scraper 24 is a comma scraper. The comma scraper can achieve high-precision coating, resulting in a more uniform coating thickness, reducing unevenness, and improving product consistency and quality.

[0028] In this embodiment, the calendering structure 4 includes a support 41, a calendering motor, an active calendering roller 42, a transmission assembly, and a passive calendering roller 43. The calendering motor, the active calendering roller 42, and the passive calendering roller 43 are respectively mounted on the support 41. The active calendering roller 42 is connected to the output end of the calendering motor and rotates under the drive of the calendering motor. The passive calendering roller 43 is connected to the active calendering roller 42 through the transmission assembly and rotates under the drive of the active calendering roller 42 and the transmission assembly. The active calendering roller 42 and the passive calendering roller 43 are arranged opposite each other on both sides of the thermal pad and the first release film 54 after adhesive application. When the unwound thermal pad and the glued first release film 54 pass through the calendering structure 4, the active calendering roller 42 rotates in one direction under the drive of the calendering motor, and the passive calendering roller 43 rotates in another direction under the drive of the active calendering roller 42 and the transmission assembly. The active calendering roller 42 and the passive calendering roller 43 contact the unwound thermal pad and the glued first release film 54 and drive them to move in a preset direction through friction.

[0029] In this embodiment, the transmission assembly includes at least one of gears, chains, belts, and couplings.

[0030] In this embodiment, the calendering structure 4 further includes a feeding platform 44; the feeding platform 44 is mounted on the bracket 41; the feeding platform 44 is used to guide the first release film 54 after applying adhesive to the active calendering roller 42 and the passive calendering roller 43. The feeding platform 44 can improve the stability of the movement of the first release film 54.

[0031] In this embodiment, the calendering structure 4 further includes a gasket guide wheel 45; the gasket guide wheel 45 is mounted on the bracket 41; the gasket guide wheel 45 is used to guide the thermally conductive gasket to the active calendering roller 42 and the passive calendering roller 43. The guide wheel can improve the stability of the movement of the thermally conductive gasket.

[0032] In this embodiment, the release film unwinding structure 1 is mounted on the bracket 41. As an example, the release film unwinding structure 1 includes a first mounting seat disposed on the side of the bracket 41 and a release film unwinding shaft rotatably connected to the first mounting seat; the release film unwinding shaft is used to unwind the first release film 54.

[0033] In this embodiment, the gasket unwinding structure 3 is mounted on the bracket 41. As an example, the gasket unwinding structure 3 includes a second mounting base disposed on the side of the bracket 41 and a gasket unwinding shaft rotatably connected to the second mounting base; the gasket unwinding shaft is used to unwind the thermally conductive gasket.

[0034] The working principle of the automatic glue application device is as follows: the thermally conductive pad and the first release film 54 are transported under the traction of the calendering structure 4; when the first release film 54 reaches the first position before the calendering structure 4, the automatic glue application structure 2 applies glue to the first release film 54; when the thermally conductive pad and the glued first release film 54 reach the calendering structure 4, the calendering structure 4 presses the thermally conductive pad and the glued first release film 54 together.

[0035] Reference Figure 2 The finished thermal pad prepared by the automatic adhesive application device comprises, from top to bottom: a second release film 51, a thermal pad layer 52, an adhesive remover layer 53, and a first release film 54; wherein, the second release film 51 and the thermal pad layer 52 constitute the thermal pad; the adhesive remover layer 53 is formed by curing the adhesive; the second release film 51 and the first release film 54 are used to protect the finished thermal pad.

[0036] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0037] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0038] The above provides a detailed description of an automatic adhesive application device for thermally conductive pads provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An automatic adhesive application device for thermally conductive pads, characterized in that, include: The system includes a release film unwinding structure, an automatic adhesive application structure, a gasket unwinding structure, and a calendering structure. The release film unwinding structure is used to unwind a first release film. The automatic adhesive application structure includes a worktable, release film guide wheels, a material trough, a scraper, and a height adjustment component. The release film guide wheels, the material trough, and the height adjustment component are respectively mounted above the worktable. The scraper is connected to the movable end of the height adjustment component. The release film guide wheels guide the unwound first release film to the material trough. The material trough pours adhesive onto the surface of the first release film. The scraper is used to smooth the adhesive material on the surface of the first release film; The height adjustment component is used to adjust the distance between the scraper and the first release film; the gasket unwinding structure is used to unwind the thermally conductive gasket; the calendering structure is used to press and pull the unwound thermally conductive gasket and the first release film after applying adhesive.

2. The automatic glue application device according to claim 1, characterized in that, The height adjustment assembly includes a cylinder and a support rod; the cylinder is mounted on the worktable; one end of the support rod is connected to the output end of the cylinder, and the other end is connected to the scraper; the scraper moves linearly under the drive of the cylinder.

3. The automatic glue application device according to claim 1, characterized in that, The scraper is a comma scraper.

4. The automatic glue application device according to claim 1, characterized in that, The calendering structure includes a support, a calendering motor, an active calendering roll, a transmission assembly, and a passive calendering roll; the calendering motor, the active calendering roll, and the passive calendering roll are respectively mounted on the support; The active calendering roller is connected to the output end of the calendering motor and rotates under the drive of the calendering motor; The passive calendering roller is connected to the active calendering roller through the transmission assembly, and rotates under the drive of the active calendering roller and the transmission assembly; the active calendering roller and the passive calendering roller are arranged opposite each other on the thermal pad and the first release film after the adhesive is applied.

5. The automatic glue application device according to claim 4, characterized in that, The calendering structure also includes a feeding platform; the feeding platform is mounted on the bracket; the feeding platform is used to guide the first release film after applying adhesive to the active calendering roller and the passive calendering roller.

6. The automatic glue application device according to claim 4, characterized in that, The calendering structure also includes a gasket guide wheel; the gasket guide wheel is mounted on the bracket; the gasket guide wheel is used to guide the thermally conductive gasket to the active calendering roll and the passive calendering roll.

7. The automatic glue application device according to claim 4, characterized in that, The release film unwinding structure is mounted on the bracket.

8. The automatic glue application device according to claim 4, characterized in that, The gasket unwinding structure is mounted on the bracket.

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