Thermal Grease Coating Tooling and Heating and Heat Dissipation Component Assembly Device

Abstract

The present invention discloses a heat dissipation paste coating tooling and a heating and heat dissipation component assembly device. The heat dissipation paste coating tooling includes: a support member provided with a first positioning structure for positioning the device to be coated and exposing the paste coating position; a heat dissipation paste coating mechanism including a coating member having a coating cavity, the coating member being movably arranged relative to the support member, and having an initial position away from the support member and a working position covering above the support member and aligning the coating cavity with the paste coating position; a heat dissipation paste feeding mechanism linked with the coating member. When the coating member is in the working position, the heat dissipation paste feeding mechanism outputs heat dissipation paste to the upper surface of the coating member. The heating and heat dissipation component assembly device further includes a heating device positioning mechanism on the basis of the heat dissipation paste coating tooling. By providing a heat dissipation paste feeding mechanism linked with the coating member, when the coating member is in the working position, the heat dissipation paste feeding mechanism can timely output heat dissipation paste to the upper surface of the coating member, facilitating the rapid and effective completion of the coating operation.

Description

Technical Field

[0001] The present invention relates to the technical field of heat conduction, and particularly relates to a heat dissipation paste coating tooling and a heating and heat dissipation component assembly device. Background Art

[0002] There are often some high-heat-generating electronic devices in electronic circuits. In order to prevent these electronic devices from malfunctioning due to overheating, heat dissipation devices are often configured for these heat-generating devices to form a heating and heat dissipation component.

[0003] For example, the fan module, as the most commonly used electronic component assembly of an air conditioner, plays a role in adjusting the rotational speed of the air conditioner fan to obtain different air volumes. It is usually assembled by a high-heat-generating IPM (Intelligent Power Module) device 91 and a heat dissipation device 92, as shown in Figure 1 When assembling the IPM device 91 and the heat dissipation device 92, it is necessary to coat the heat dissipation paste on the heat dissipation device 92 and then combine and fix it with the IPM device. Specifically, the worker needs to hold the heat dissipation device in one hand and the IPM device in the other hand, dip a small amount of heat dissipation paste with a coating tool, and coat a small amount of heat dissipation paste on the heat dissipation surface of the radiator in contact with the IPM component; then, use the coating tool to scrape the heat dissipation paste back and forth to form a thin filling film on the heat dissipation surface of the radiator, and the thickness should preferably meet the process requirements; after that, attach the heat dissipation surface of the IPM component to the heat dissipation paste; finally, use a dust-free cloth to wipe off the heat dissipation paste that exceeds the coating area of the radiator during the coating process.

[0004] As can be seen from the above, the existing heat dissipation paste coating operation and the entire assembly process of the IPM device and the heat dissipation device have relatively low efficiency and are prone to quality problems. For example, uneven coating of the heat dissipation paste on the heat dissipation device will cause abnormal heat dissipation of the IPM, and excessive coating of the heat dissipation paste will make it impossible to position and fix the IPM device and the heat dissipation device, and even cause the IPM pins to be contaminated with the heat dissipation paste. Summary of the Invention

[0005] The first object of the present invention is to provide a heat dissipation paste coating tooling, aiming to improve the coating efficiency of the heat dissipation paste. The first object of the present invention is achieved by the following technical solutions:

[0006] A heat dissipation paste coating tooling, characterized in that it includes:

[0007] A support member, provided with a first positioning structure for positioning the device to be coated and exposing the paste coating position of the device to be coated;

[0008] A heat dissipation paste coating mechanism, including a coating member having a coating cavity, the coating member is movably arranged relative to the support member, and has an initial position away from the support member and a working position covering above the support member and aligning the coating cavity with the paste coating position;

[0009] The heat dissipation paste feeding mechanism is arranged in linkage with the coating member. When the coating member is located at the working position, the heat dissipation paste feeding mechanism outputs the heat dissipation paste to the upper surface of the coating member.

[0010] Specifically, the heat dissipation paste coating tool further includes a substrate, and the support member is detachably or integrally formed on the upper surface of the substrate.

[0011] Specifically, the thermal paste coating mechanism further includes a first hinged member, which is disposed on the upper surface of the substrate and located on one side of the support member, and one end of the coating member is hinged to the first hinged member.

[0012] Specifically, the heat dissipation paste feeding mechanism is arranged on the upper surface of the coating member, and the heat dissipation paste feeding mechanism has a storage cavity and a feeding port and a discharging port respectively connected to the storage cavity.

[0013] Specifically, when the coating member is located at the initial position, the discharge port is higher than the material storage cavity, and when the coating member is located at the working position, the discharge port is lower than the material storage cavity.

[0014] Specifically, the structure of the thermal paste feeding mechanism satisfies: the storage cavity can accommodate a thermal paste container, the feeding port can allow the thermal paste container to be loaded into the storage cavity, and the discharge port can be connected to the thermal paste container loaded into the storage cavity.

[0015] Specifically, the thermal paste feeding mechanism also includes a cover for blocking or opening the feeding port.

[0016] Specifically, the thermal paste coating tool further includes a scraper assembly, and the scraper assembly includes a scraper and a driving member for driving the scraper to reciprocate along the upper surface of the coating member.

[0017] Specifically, the heat dissipation paste coating tool also includes a control module electrically connected to the driving component.

[0018] Specifically, the thermal paste coating tool also includes a position detection mechanism for detecting that the coating member is located at the working position, which is disposed on the substrate and electrically connected to the control module.

[0019] Specifically, the thermal paste feeding mechanism also has a solenoid valve for opening or closing the discharge port, and the solenoid valve is electrically connected to the control module.

[0020] Specifically, the thermal paste feeding mechanism further comprises an electric pump, which is arranged between the discharge port and the storage cavity, and the electric pump is electrically connected to the control module.

[0021] The second object of the present invention is to provide an assembly device for a heat generating and heat dissipating component, aiming to improve the coating efficiency and quality of thermal paste, and at the same time facilitate the assembly of the heat generating and heat dissipating component. The second object of the present invention is achieved by the following technical solutions:

[0022] An assembly device for a heat generating and heat dissipating component, comprising: a thermal paste coating tooling for coating a thermal paste layer at the paste coating position of a heat dissipating device, and a heat generating device positioning mechanism for positioning and fitting the heat dissipating position of the heat generating device onto the thermal paste layer; characterized in that the thermal paste coating tooling is the thermal paste coating tooling described above.

[0023] Specifically, the heat generating device positioning mechanism includes a positioning member, and the positioning member has a second positioning structure for positioning the heat generating device and making the heat generating device face the thermal paste layer.

[0024] Specifically, the positioning member is movably arranged relative to the support member, and has an idle position away from the support member, and an assembly position covering above the support member and making the second positioning structure aligned with the paste coating position.

[0025] Specifically, the heat generating device positioning mechanism further includes a second hinge member, which is arranged on the upper surface of the substrate and on the other side of the support member, and one end of the positioning member is hinged to the second hinge member.

[0026] Specifically, the heat generating device is an IPM device, the second positioning structure is a positioning hole with bumps on the inner wall, and the distribution of the bumps satisfies: avoiding the pins of the IPM device and abutting against at least three faces of the body of the IPM device.

[0027] Specifically, the heat generating device and the heat dissipating device have corresponding screw holes, and the assembly device for the heat generating and heat dissipating component further includes a screw assembly mechanism for assembling screws into the screw holes.

[0028] The beneficial effects of the present invention include but are not limited to the following aspects:

[0029] (1) By providing a thermal paste feeding mechanism linked to the coating member, when the coating member is in the working position, the thermal paste feeding mechanism timely outputs thermal paste to the upper surface of the coating member, facilitating the rapid and effective completion of the coating operation.

[0030] (2) When the coating member is in the initial position, the discharge port is higher than the storage cavity; when the coating member is in the working position, the discharge port is lower than the storage cavity. This enables the thermal paste in the storage cavity to automatically flow out from the discharge port to the upper surface of the coating member by gravity when the coating member is in the working position; while when the coating member is in the initial position, the thermal paste in the storage cavity cannot flow out from the discharge port.

[0031] (3) The provided scraping blade assembly can automatically scrape the thermal paste on the upper surface of the coated part sufficiently and evenly, further improving the efficiency and quality of the coating operation. Description of the Drawings

[0032] Figure 1 It is a three-dimensional view of a fan module assembled from an IPM device and a heat dissipation device.

[0033] Figure 2 It is a three-dimensional view of the heat generating and heat dissipating component assembly device provided by an embodiment of the present invention.

[0034] Figure 3 It is a three-dimensional view of the coated part at the working position in the heat generating and heat dissipating component assembly device provided by an embodiment of the present invention.

[0035] Figure 4 It is a schematic diagram of the thermal paste feeding mechanism in the heat generating and heat dissipating component assembly device provided by an embodiment of the present invention.

[0036] Figure 5 It is a three-dimensional view of the positioning member at the assembly position in the heat generating and heat dissipating component assembly device provided by an embodiment of the present invention.

[0037] Figure 6 It is a schematic diagram of the positioning member in the heat generating and heat dissipating component assembly device provided by an embodiment of the present invention.

[0038] Figure 7 It is a three-dimensional view of the coated part at the initial position and the positioning member at the idle position after the heat generating and heat dissipating component assembly device provided by an embodiment of the present invention assembles the heat generating and heat dissipating components. Detailed Embodiments

[0039] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or priority.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Combined with Figure 2 and Figure 3 As shown, this embodiment provides a thermal paste coating tooling, which includes a substrate 10, a support member 20, a thermal paste coating mechanism 30, a thermal paste feeding mechanism 40, a scraper assembly 50, and a control module 60. This embodiment also provides a heating and heat dissipation component assembly device, which adds a heating device positioning mechanism 80 on the basis of the above thermal paste coating tooling. Since the heating and heat dissipation component assembly device and the thermal paste coating tooling are in an inclusion relationship, this article will be described with one embodiment and a set of drawings. Taking the fan module assembled by the IPM device 91 and the heat dissipation device 92 (see Figure 1 ) as an example, the thermal paste coating tooling and the heating and heat dissipation component assembly device will be described in detail.

[0043] As Figure 2 shown, the support member 20 is in the shape of a square table and is detachably or integrally formed on the middle of the upper surface of the substrate 10. The support member 20 is provided with a first positioning structure 21 for positioning the heat dissipation device 92 and exposing the paste coating position of the heat dissipation device 92. The first positioning structure 21 can be a positioning groove opened downward on the upper surface of the support member 20. The length and width dimensions of the positioning groove are adapted to the length and width of the heat dissipation device 92, and the depth of the positioning groove is such that the heat dissipation device 92 placed therein can expose the paste coating position of the heat dissipation device 92.

[0044] The thermal paste coating mechanism 30 includes a coating member 31, a first hinge member 32 and a hinge shaft 33. The first hinge member 32 is disposed on the upper surface of the substrate 10 and is located on the right side of the support member 20. One end of the coating member 31 is hinged to the first hinge member 32 through the hinge shaft 33. The coating member 31 includes a steel mesh fixing frame 311, a steel mesh sheet 312 and a steel mesh sheet pressing strip 313. The steel mesh sheet 312 is connected within the frame of the steel mesh fixing frame 311 through the steel mesh sheet pressing strip 313. The thickness of the steel mesh sheet 312 is the same as the thickness of the thermal paste required at the paste coating position of the heat dissipation device 92. The mesh holes on the steel mesh sheet 312 form a coating cavity 319 corresponding to the paste coating position of the heat dissipation device 92, so as to ensure that the thickness of the coating cavity 319 is the same as the thickness of the thermal paste to be applied. Through the above structural design, the coating member 31 is movably disposed relative to the support member 20, and has an initial position away from the support member 20 and a working position covering above the support member 20 and aligning the coating cavity 319 with the paste coating position.

[0045] In addition, the thermal paste coating mechanism 30 further includes a first limiting member 35, which is disposed on the substrate 10 and is located on the right side of the first hinge member 32. When the coating member 31 is in the initial position, the upper surface of the coating member 31 abuts against the first limiting member 35.

[0046] Combined with Figure 3 As shown in the figure, the thermal paste feeding mechanism 40 is disposed on the upper surface of the coating member 31 and is linked with the coating member 31. When the coating member 31 is in the working position, the thermal paste feeding mechanism 40 outputs thermal paste to the upper surface of the coating member 31. The thermal paste enters the coating cavity 319 through self-flow or by scraping with a scraper assembly 50, and fits with the paste coating position of the heat dissipation device 92 placed on the lower support member 20, realizing the coating of the thermal paste.

[0047] Combined with Figure 4 As shown in the figure, the thermal paste feeding mechanism 40 includes a storage cavity 41 and a feeding port 42 and a discharging port 43 respectively communicating with the storage cavity 41. When the coating member 31 is in the initial position, the discharging port 43 is higher than the storage cavity; when the coating member 31 is in the working position, the discharging port 43 is lower than the storage cavity 41. In this way, when the coating member 31 is in the working position, the thermal paste in the storage cavity 41 can be automatically output from the discharging port 43 to the upper surface of the coating member 31 by gravity; while when the coating member 31 is in the initial position, the thermal paste in the storage cavity 41 cannot flow out from the discharging port 43.

[0048] Considering that the raw material of the thermal paste is usually contained in a thermal paste container 99, in order to reduce the process of transferring the thermal paste back into the storage cavity 41, in this embodiment, the thermal paste container 99 is directly loaded into the storage cavity 41. Therefore, the structure of the thermal paste feeding mechanism 40 also satisfies that the storage cavity 41 can accommodate the thermal paste container 99, the feeding port 42 can allow the thermal paste container 99 to be loaded into the storage cavity 41, and the discharging port 43 can communicate with the thermal paste container 99 loaded in the storage cavity. At the same time, in order to prevent the thermal paste container 99 from falling off from the feeding port 42 or prevent the thermal paste in the storage cavity 41 from flowing out from the feeding port 42, the thermal paste feeding mechanism 40 further includes a lid 44 for blocking or opening the feeding port 42. Of course, the thermal paste in the thermal paste container 99 can also be introduced into the storage cavity 41 and directly contained by the storage cavity 41. In addition, the thermal paste feeding mechanism 40 further includes a plug 45 for blocking the discharging port 43 when the thermal paste feeding mechanism 40 is not used for a long time.

[0049] Continue to refer to Figure 3 , the squeegee assembly 50 includes a squeegee 51 and a driving member 52 for driving the squeegee 51 to reciprocate along the upper surface of the coating member 31. Specifically, the driving member 52 is two electric control cylinders. The control module 60 is electrically connected to the driving member 52 to control the operation of the driving member 52, thereby driving the squeegee 51 to reciprocate along the upper surface of the coating member 31.

[0050] Continue to refer to Figure 1 , two support columns 71 are provided on the upper surface of the substrate 10 on the left side of the support member 20. The support columns 71 can be used to support the other end of the coating member 31 located at the working position. A position detection mechanism 72 is provided on the support column 71. The position detection mechanism 72 is used to detect whether the coating member 31 is located at the working position. The position detection mechanism 72 can be a sensor by means of contact induction or light detection, etc., and is electrically connected to the control module 60 to provide a detection signal for the control module 60.

[0051] As a more optimized solution, the thermal paste feeding mechanism 40 further has an electromagnetic valve (not shown in the figure) for opening or closing the discharging port 43, and the electromagnetic valve is electrically connected to the control module 60.

[0052] As an alternative solution, there is no limitation that when the coating member 31 is in the initial position, the discharge port 43 is higher than the storage cavity; when the coating member 31 is in the working position, the discharge port 43 is lower than the storage cavity 41. In this case, the thermal paste feeding mechanism 40 further includes an electric pump (not shown in the figure), which is arranged between the discharge port 43 and the storage cavity 41, and the electric pump is electrically connected to the control module 60. That is, the flow of the thermal paste in the storage cavity 41 is not controlled by gravity, but by the electric pump to drive the flow of the thermal paste in the storage cavity 41. In this way, the setting method and position of the thermal paste feeding mechanism 40 can be more flexible. As long as when the coating member 31 is in the working position, the discharge port 43 of the thermal paste feeding mechanism 40 outputs the thermal paste to the upper surface of the coating member 31, it still belongs to the category of the linkage setting of the thermal paste feeding mechanism 40 and the coating member 31.

[0053] In this embodiment, the control module 60 adopts a time relay. Specifically, when the position detection mechanism 72 detects that the coating member 31 is in the working position, a signal is given to the time relay. At this time, the thermal paste in the storage cavity 41 is directly output to the upper surface of the coating member 31 by gravity, or is output to the upper surface of the coating member 31 through gravity and with an additional solenoid valve control, or is output to the upper surface of the coating member 31 by means of an electric pump. After a predetermined time, the control driving member 52 is actuated to drive the scraper 51 to reciprocate along the upper surface of the coating member 31, so that the thermal paste enters the coating cavity 319 and fits the paste application position of the heat dissipation device 92 placed on the lower support member 20, realizing the coating of the thermal paste to form a thermal paste layer.

[0054] Continue to refer to Figure 1 , the heating device positioning mechanism 80, as a component of the heating and heat dissipation component assembly device, is used to position and fit the heat dissipation position of the IPM device 91 to the thermal paste layer. The heating device positioning mechanism 80 includes a positioning member 81, a second hinge member 82 and a second hinge shaft 83. The second hinge member 82 is arranged on the upper surface of the substrate 10 and is located on the left side of the support member 20. One end of the positioning member 81 is hinged to the second hinge member 82 through the second hinge shaft 83. The positioning member 81 has a second positioning structure 819 for positioning the heating device and making the heating device face the thermal paste layer, specifically a positioning hole with convex points 817 on the inner wall. Combining Figure 6 as shown, the distribution of the convex points 817 satisfies: avoiding the pins of the IPM device 91 and abutting against at least three surfaces of the body of the IPM device 91.

[0055] Through the above structural design, the positioning member 81 is movably arranged relative to the support member 20, and has an idle position away from the support member 20 and an assembly position covering the support member 20 and making the second positioning structure 819 aligned with the paste application position.

[0056] Specifically, the IPM device 91 and the heat dissipation device 92 have corresponding screw holes, and the heat generating and heat dissipating component assembling device further includes a screw assembling mechanism for assembling a screw 95 (combined with Figure 1 ) into the screw hole. In addition, the heat generating device positioning mechanism 80 further includes a second limiting member 85, which is disposed on the substrate 10 and on the left side of the second hinge member 82. When the positioning member 81 is in the idle position, the upper surface of the positioning member 81 abuts against the first limiting member 35.

[0057] The working processes of the heat dissipation paste coating tooling and the heat generating and heat dissipating component assembling device provided in the above embodiments are as follows:

[0058] First, place the heat dissipation device 92 in the first positioning structure 21 of the support member 20; then, move the coating member 31 from the initial position to the working position, and enable the heat dissipation paste feeding mechanism 40 to output heat dissipation paste onto the upper surface of the coating member 31. The heat dissipation paste enters the coating cavity 319 through self-flow or by being scraped by the scraper assembly 50, and fits with the paste coating position of the heat dissipation device 92 placed on the lower support member 20 to form a heat dissipation paste layer; afterwards, move the coating member 31 from the working position to the initial position, and then move the positioning member 81 from the idle position to the assembling position, as shown in Figure 5 shown; afterwards, place the IPM device 91 into the second positioning structure 819 of the positioning member 81, so that the heat dissipation position of the IPM device 91 is positioned and fitted onto the heat dissipation paste layer, and fasten the IPM device 91 and the heat dissipation device 92 with screws; finally, move the positioning member 81 from the assembling position to the idle position, and take out the heat generating and heat dissipating component composed of the IPM device 91 and the heat dissipation device 92, as shown in Figure 7 shown.

[0059] In the above embodiments, the coating member 31 moves between the initial position and the working position in a hinged swing manner, and the positioning member 81 also moves between the idle position and the assembling position in a hinged swing manner. As an alternative solution, a guide rail may be provided on the upper surface of the substrate, and the coating member may move between the initial position and the working position in a sliding manner, and the positioning member also moves between the idle position and the assembling position in a sliding manner.

[0060] The above specific embodiments are only for fully disclosing rather than limiting the present invention. Replacements of equivalent technical features that are based on the creative concept of the present invention and can be obtained without creative labor should be regarded as the scope disclosed in this application.

Claims

1. A heat dissipation paste coating tooling, characterized in that, it includes: a support member provided with a first positioning structure for positioning the device to be coated and exposing the paste coating position of the device to be coated; a heat dissipation paste coating mechanism including a coating member having a coating cavity, the coating member is movably arranged relative to the support member, and has an initial position away from the support member and a working position covering above the support member and aligning the coating cavity with the paste coating position; a heat dissipation paste feeding mechanism arranged on the upper surface of the coating member, having a storage cavity and a feeding port and a discharging port respectively communicating with the storage cavity; the coating member is movably between the initial position and the working position in a hinged swing manner, the heat dissipation paste feeding mechanism is linked with the coating member, when the coating member is in the working position, the discharging port is lower than the storage cavity, and the heat dissipation paste in the storage cavity is automatically output from the discharging port to the upper surface of the coating member; when the coating member is in the initial position, the discharging port is higher than the storage cavity, and the heat dissipation paste in the storage cavity will not automatically flow out from the discharging port.

2. The heat dissipation paste coating tooling according to claim 1, characterized in that, the structure of the heat dissipation paste feeding mechanism satisfies that: the storage cavity can accommodate a heat dissipation paste container, the feeding port can supply the heat dissipation paste container to be loaded into the storage cavity, and the discharging port can communicate with the heat dissipation paste container loaded into the storage cavity.

3. The heat dissipation paste coating tooling according to claim 2, characterized in that, the heat dissipation paste feeding mechanism further includes a lid for blocking or opening the feeding port.

4. The heat dissipation paste coating tooling according to any one of claims 1 to 3, characterized in that, it further includes a scraper assembly, and the scraper assembly includes a scraper and a driving member for driving the scraper to reciprocate along the upper surface of the coating member.

5. The heat dissipation paste coating tooling according to claim 4, characterized in that, it further includes a control module electrically connected to the driving member.

6. The heat dissipation paste coating tooling according to claim 5, characterized in that, the heat dissipation paste coating tooling further includes a position detection mechanism for detecting that the coating member is in the working position and is electrically connected to the control module.

7. A heating and heat dissipation component assembly device, including: a heat dissipation paste coating tooling for coating a heat dissipation paste layer on the paste coating position of a heat dissipation device, and a heating device positioning mechanism for positioning and fitting the heat dissipation position of a heating device onto the heat dissipation paste layer; characterized in that, the heat dissipation paste coating tooling is the heat dissipation paste coating tooling according to any one of claims 1 to 6; the heating device positioning mechanism includes a positioning member having a second positioning structure for positioning the heating device and making the heating device face the heat dissipation paste layer; the positioning member is movably arranged relative to the support member, and has an idle position away from the support member and an assembly position covering above the support member and aligning the second positioning structure with the paste coating position.

8. The heating and heat dissipation component assembly device according to claim 7, characterized in that, The heat dissipation paste coating tooling further includes a substrate. The heating device positioning mechanism further includes a second hinge member disposed on the upper surface of the substrate and located on the other side of the support member. One end of the positioning member is hinged to the second hinge member.

9. The assembly device for the heating and heat dissipation component according to claim 7 or 8, characterized in that the heating device is an IPM device, the second positioning structure is a positioning hole with bumps on the inner wall, and the distribution of the bumps satisfies: avoiding the pins of the IPM device and abutting against at least three surfaces of the body of the IPM device.

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