Smearing device for thermal interface material

Abstract

The utility model belongs to the technical field of smearing devices, and discloses a thermal interface material smearing device which comprises a smearing pipe, a material storage cavity is formed in the front face of the smearing pipe, a first spring is fixedly connected to the inner top wall of the material storage cavity, and an extrusion guide block is fixedly connected to the bottom of the first spring. And the bottom of the extrusion guide block is fixedly connected with a sealing plate, and the inner side wall of the material storage cavity is slidably connected with an extrusion rod in a sleeving mode. Through the arrangement of a smearing pipe, an extrusion guide block, a sealing plate, a limiting groove and an adjusting block, the bottom of a material storage cavity is placed on the top of a device, the smearing pipe is pressed downwards, the adjusting block can move horizontally, an extrusion rod is pushed, the extrusion guide block can move downwards, then a thermal interface material is extruded out through a discharging hole, and then the smearing pipe is moved along the device; the vertical surface of the adjusting block has a blocking effect on the thermal interface material, and the thermal interface material can be flatly spread and smeared on the surface of the device, so that the situation that the thermal interface material overflows out of the device is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of coating devices, and more specifically, to a coating device for thermal interface materials. Background Art

[0002] As we all know, thermal interface material is a material used to reduce the contact thermal resistance between heat dissipation devices and heat generation devices. Thermal interface material is usually used to fill the tiny gaps between two contact surfaces and the holes on the uneven surface, and then a special coating device is used for coating. At present, most coating devices use an extrusion device to extrude the material, and then use a scraper to repeatedly scrape and flatten it so that it is spread evenly on the required position.

[0003] However, most of the thermal interface material coating devices currently available on the market are prone to material overflowing from the outside of the device during coating, thereby increasing the coating difficulty of the device and greatly reducing the coating effect of the device. Utility Model Content

[0004] In order to solve the above problems, the present application provides a thermal interface material coating device.

[0005] A thermal interface material coating device provided in the present application adopts the following technical solution: a thermal interface material coating device, comprising an coating tube, a material storage cavity is opened on the front side of the coating tube, a first spring is fixedly connected to the inner top wall of the material storage cavity, an extrusion guide block is fixedly connected to the bottom of the first spring, a sealing plate is fixedly connected to the bottom of the extrusion guide block, and an extrusion rod is slidably sleeved on the inner side wall of the material storage cavity.

[0006] One end of the extrusion rod is fixedly connected to a guide plate, one side of the guide plate is fixedly connected to a second spring, a limiting groove is provided at the bottom of the application tube, a discharge hole is provided on the inner top wall of the limiting groove, a channel is provided on the inner side wall of the limiting groove, and an adjustment block is slidably sleeved on the inner wall of the channel.

[0007] Furthermore, the shape of the extrusion guide block is an "isosceles trapezoid" structure, the outer wall of the extrusion guide block is slidably connected to the inner wall of the material storage cavity, and the outer wall of the sealing plate is slidably connected to the inner wall of the material storage cavity.

[0008] Through the above technical solution, the side of the extrusion guide block is an inclined surface, and when the side of the extrusion guide block is subjected to a large force, the extrusion guide block will move downward, thereby causing the sealing plate to move downward, and the thermal interface material inside the storage cavity can be extruded through the discharge hole.

[0009] Furthermore, one end of the extrusion rod is fixedly connected to a push plate, the second spring is slidably sleeved with the extrusion rod, and one end of the second spring is fixedly connected to the inner wall of the material storage cavity.

[0010] Through the above technical solution, after the extrusion rod is pushed so that the thermal interface material is extruded, the extrusion rod is released and the extrusion rod is reset by the second spring.

[0011] Furthermore, the outer wall of the coating tube is fixedly connected with a feed tube, and the shape of the adjustment block is a "right-angled trapezoid" structure.

[0012] Through the above technical solution, the thermal interface material can be injected into the interior of the material storage cavity through the feeding pipe.

[0013] Furthermore, the other side of the adjustment block is fixedly connected to a limit plate, and one side of the limit plate is fixedly connected to a third spring.

[0014] Through the above technical solution, the inclined surface of the adjustment block will move horizontally when a large force is applied, and will be reset by the third spring when no force is applied.

[0015] Furthermore, one side of the adjustment block is fixedly connected to the limiting block, and one end of the third spring is fixedly connected to the outer wall of the application tube.

[0016] Through the above technical solution, the limit block can play a limiting role, so that there is a certain space between the device surface and the discharge hole.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] (1) By setting the coating tube, extrusion guide block, sealing plate, limit groove and adjustment block, the bottom of the storage chamber is placed on the top of the device and the coating tube is pressed downward. The adjustment block will move horizontally to push the extrusion rod, and the extrusion guide block will move downward, so that the thermal interface material is extruded through the discharge hole. Then, the coating tube is moved along the device. The vertical surface of the adjustment block blocks the thermal interface material. The thermal interface material will be spread evenly on the surface of the device without overflowing from the outside of the device, thereby greatly reducing the coating difficulty of the device and effectively improving the coating effect of the device.

[0019] (2) By setting the adjustment block, the limit plate, the second spring and the limit block, the inclined surface of the adjustment block will move horizontally when a large force is applied, and will be reset by the third spring when no force is applied. Therefore, the device can be applied to devices of different widths, thereby improving the practicality of the device and further meeting the applicability requirements of the device, which is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a thermal interface material coating device;

[0021] Figure 2A front cross-sectional view of the coating tube in this application;

[0022] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0023] Figure 4 for Figure 2 A magnified view of the structure at B in the middle.

[0024] Description of the numbers in the figure:

[0025] 1. Applicator tube; 2. Material storage chamber; 3. First spring; 4. Extrusion guide block; 5. Extrusion rod; 6. Guide plate; 7. Second spring; 8. Push plate; 9. Feed tube; 10. Sealing plate; 11. Limiting groove; 12. Channel; 13. Adjusting block; 14. Limiting plate; 15. Third spring; 16. Discharge hole; 17. Limiting block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The present application embodiment discloses a thermal interface material coating device. Figure 1-4 , including an application tube 1, a material storage chamber 2 is opened on the front side of the application tube 1, a first spring 3 is fixedly connected to the inner top wall of the material storage chamber 2, an extrusion guide block 4 is fixedly connected to the bottom of the first spring 3, a sealing plate 10 is fixedly connected to the bottom of the extrusion guide block 4, and an extrusion rod 5 is slidably sleeved on the inner side wall of the material storage chamber 2.

[0031] One end of the extrusion rod 5 is fixedly connected to a guide plate 6, and one side of the guide plate 6 is fixedly connected to a second spring 7. A limiting groove 11 is provided at the bottom of the application tube 1, and an inner top wall of the limiting groove 11 is provided with a discharge hole 16. The inner side wall of the limiting groove 11 is provided with a channel 12, and an adjusting block 13 is slidably sleeved on the inner wall of the channel 12. The bottom of the storage chamber 2 is placed on the top of the device and the application tube 1 is pressed downward. The adjusting block 13 will move horizontally to push the extrusion rod 5, and the extrusion guide block 4 will move downward, thereby causing the thermal interface material to be extruded through the discharge hole 16, and then the application tube 1 is moved along the device. The vertical surface of the adjusting block 13 acts as a barrier to the thermal interface material, and the thermal interface material will be spread evenly on the surface of the device without overflowing from the outside of the device, thereby greatly reducing the difficulty of applying the device and effectively improving the application effect of the device.

[0032] In this embodiment, the shape of the extrusion guide block 4 is an "isosceles trapezoid" structure, the outer wall of the extrusion guide block 4 is slidably connected to the inner wall of the storage chamber 2, the outer wall of the sealing plate 10 is slidably connected to the inner wall of the storage chamber 2, and the side of the extrusion guide block 4 is an inclined surface. When the side of the extrusion guide block 4 is subjected to a large force, the extrusion guide block 4 will move downward, thereby causing the sealing plate 10 to move downward, and the thermal interface material inside the storage chamber 2 can be extruded through the discharge hole 16.

[0033] In this embodiment, one end of the extrusion rod 5 is fixedly connected to a push plate 8, and the second spring 7 is slidably sleeved with the extrusion rod 5. One end of the second spring 7 is fixedly connected to the inner wall of the material storage chamber 2. After the extrusion rod 5 is pushed so that the thermal interface material is extruded, the extrusion rod 5 is released and the extrusion rod 5 is reset by the second spring 7.

[0034] In this embodiment, the outer wall of the coating tube 1 is fixedly connected to the feed tube 9, and the shape of the adjustment block 13 is a "right-angled trapezoid" structure, and the thermal interface material can be injected into the interior of the storage cavity 2 through the feed tube 9.

[0035] In this embodiment, the other side of the adjustment block 13 is fixedly connected to the limiting plate 14, and one side of the limiting plate 14 is fixedly connected to the third spring 15. When the inclined surface of the adjustment block 13 is subjected to a large force, it will move horizontally, and when there is no force, it will be reset by the third spring 15.

[0036] In this embodiment, one side of the adjustment block 13 is fixedly connected to a limit block 17, and one end of the third spring 15 is fixedly connected to the outer wall of the application tube 1. The limit block 17 can play a limiting role so that there is a certain space between the device surface and the discharge hole 16.

[0037] The implementation principle of a thermal interface material coating device in an embodiment of the present application is as follows: the thermal interface material is injected into the interior of the storage chamber 2 through the feed pipe 9, and then the bottom of the storage chamber 2 is placed on the top of the device and the coating tube 1 is pressed downward. The adjusting block 13 is subjected to the resistance of the end face of the device, and the adjusting block 13 is moved horizontally through the interaction of forces. After the device passes through the inclined surface at the bottom of the adjusting block 13 to the vertical surface of the adjusting block 13, it is limited by the limiting plate 14, so that there is a certain space between the device surface and the discharge hole 16, and the extrusion rod 5 is pushed. When the side of the extrusion guide block 4 is subjected to a large force, the extrusion guide block 4 will move downward, and then the sealing plate 10 will move downward, and then the thermal interface material inside the storage chamber 2 can be squeezed out through the discharge hole 16, and then the coating tube 1 is moved along the device. The vertical surface of the adjusting block 13 acts as a barrier to the thermal interface material, and the thermal interface material will be spread flat on the surface of the device without overflowing outside the device.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermal interface material coating device, comprising a coating tube (1), characterized in that: The front of the application tube (1) is provided with a material storage cavity (2), the inner top wall of the material storage cavity (2) is fixedly connected to a first spring (3), the bottom of the first spring (3) is fixedly connected to an extrusion guide block (4), the bottom of the extrusion guide block (4) is fixedly connected to a sealing plate (10), and the inner side wall of the material storage cavity (2) is slidably sleeved with an extrusion rod (5); One end of the extrusion rod (5) is fixedly connected to a guide plate (6), one side of the guide plate (6) is fixedly connected to a second spring (7), a limiting groove (11) is provided at the bottom of the application tube (1), a discharge hole (16) is provided on the inner top wall of the limiting groove (11), a channel (12) is provided on the inner side wall of the limiting groove (11), and an adjustment block (13) is slidably sleeved on the inner wall of the channel (12).

2. The thermal interface material coating device according to claim 1, characterized in that: The shape of the extrusion guide block (4) is an "isosceles trapezoid" structure, the outer wall of the extrusion guide block (4) is slidably connected to the inner wall of the material storage cavity (2), and the outer wall of the sealing plate (10) is slidably connected to the inner wall of the material storage cavity (2).

3. The thermal interface material coating device according to claim 1, characterized in that: One end of the extrusion rod (5) is fixedly connected to a push plate (8), the second spring (7) is slidably sleeved with the extrusion rod (5), and one end of the second spring (7) is fixedly connected to the inner wall of the material storage chamber (2).

4. The thermal interface material coating device according to claim 1, characterized in that: The outer wall of the smear tube (1) is fixedly connected to a feed tube (9), and the shape of the adjustment block (13) is a "right-angled trapezoid" structure.

5. The thermal interface material coating device according to claim 1, characterized in that: The other side of the adjustment block (13) is fixedly connected to a limiting plate (14), and one side of the limiting plate (14) is fixedly connected to a third spring (15).

6. A thermal interface material coating device according to claim 1 or 5, characterized in that: One side of the adjustment block (13) is fixedly connected to the limiting block (17), and one end of the third spring (15) is fixedly connected to the outer wall of the application tube (1).

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