Radiator ceramic sheet coating with thermal grease pneumatic device and method

Abstract

The application provides a heat dissipator ceramic sheet coating heat-conductive silicone grease pneumatic device and method. The pneumatic device comprises a relay positioning frame and a suction cup device; the surface of the heat dissipator has a plurality of first ceramic sheet positioning grooves for arranging ceramic sheets; the relay positioning frame is further provided with a plurality of through positioning openings; the suction cup device comprises a ceramic sheet placing seat, a suction cup mounting seat, a cover plate and a gas control mechanism, the bottom surface of the ceramic sheet placing seat is provided with a plurality of second ceramic sheet positioning grooves for placing ceramic sheets, the lower surface of the suction cup mounting seat is provided with a plurality of downwardly extending suction cup mounting columns, and vacuum suction cups are mounted below the suction cup mounting columns. The suction cup device sucks the ceramic sheets and turns and places them on the heat dissipator, without the need to move the heat dissipator. For a larger heat dissipator, the suction cup device with smaller weight can be used to coat and load the ceramic sheets in multiple times, or multiple different suction cup devices with smaller weight are arranged, so that the coating operation of the heat-conductive silicone grease is facilitated, and the labor intensity is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of inverter manufacturing, in particular to a pneumatic device and method for coating thermal conductive silicone grease on a radiator ceramic piece. Background Art

[0002] Inverters typically contain multiple power components, which generate significant heat and require a heat sink to dissipate it promptly. Ceramic sheets serve as a heat transfer medium between these components and the heat sink. To ensure optimal contact between the ceramic sheet, the power components, and the heat sink, thermal grease is applied to both surfaces.

[0003] The existing method of applying thermal grease to ceramic sheets is inefficient and has significant limitations. The ceramic sheet is placed on a jig, coated with grease on one side, and then the heat sink is placed on the jig. The jig and heat sink are then flipped 180 degrees, and the ceramic sheet is transferred to the heat sink. The jig is then removed and the other side of the sheet is coated with grease. This process is time-consuming and labor-intensive, requiring multiple handling and flipping operations, especially for large and heavy heat sinks. This results in high labor costs and is labor-intensive. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the object of the present invention is to provide a pneumatic device and method for applying thermal grease to radiator ceramic plates.

[0005] In order to achieve the above object, the present invention solves the technical problem by adopting the following technical solution: a pneumatic device for applying thermal grease to a radiator ceramic plate, comprising:

[0006] The heat sink has a plurality of first ceramic sheet positioning grooves on its surface for arranging ceramic sheets;

[0007] A relay positioning frame having a contour positioning structure for matching and positioning with the surface contour of the radiator, wherein the relay positioning frame is further provided with a plurality of through positioning openings, each of which is surrounded by a plurality of first ceramic piece positioning grooves;

[0008] The suction cup device comprises a ceramic piece placement seat, a suction cup mounting seat, a cover plate and an air control mechanism, wherein the bottom of the ceramic piece placement seat is provided with a positioning structure matching the through positioning port, the bottom surface of the ceramic piece placement seat is provided with a plurality of second ceramic piece positioning grooves for placing ceramic pieces, the second ceramic piece positioning grooves are arranged to be vertically opposite to the first ceramic piece positioning grooves on the radiator, and a suction cup through hole is provided in the middle of the second ceramic piece positioning groove; the suction cup mounting seat is installed above the ceramic piece placement seat, the lower surface of the suction cup mounting seat is provided with a plurality of suction cup mounting columns extending downward, the center of the suction cup mounting column is provided with a gas sub-channel that passes through the upper and lower parts, and a vacuum suction cup is installed below the suction cup mounting column; the cover plate is provided above the suction cup mounting seat, and a gas main channel connected to all the gas sub-channels is provided between the cover plate and the suction cup mounting seat; the air control mechanism is connected to the gas main channel, and the air control mechanism is used to control the extraction of vacuum or blowing of gas into the gas main channel.

[0009] The present invention uses a suction cup device to suck up the ceramic piece and flip it over to place it on the radiator without moving the radiator. For a larger radiator, the ceramic piece can be coated and loaded in multiple times using a suction cup device of smaller weight, or a plurality of different suction cup devices of smaller weight can be configured, which facilitates the application of thermal grease and reduces labor intensity.

[0010] Furthermore, the air control mechanism includes an air pump, an air inlet switch, a reversing valve and a vacuum generator, the reversing valve has an air inlet, a first air outlet and a second air outlet, the reversing valve is used to control its air inlet to be separately connected to its first air outlet or its air inlet to be separately connected to the second air outlet; the air outlet of the air pump is connected to the air inlet of the air inlet switch via a pipeline, the air outlet of the air inlet switch is connected to the air inlet of the reversing valve via a pipeline, the first air outlet of the reversing valve is connected to the main gas channel of the suction cup device via a first branch pipeline, the second air outlet of the reversing valve is connected to the air inlet end of the vacuum generator via a second branch pipeline, the air outlet end of the vacuum generator is connected to the atmosphere, and the vacuum end of the vacuum generator is connected to the main gas channel of the suction cup device.

[0011] By adopting the above preferred solution, the ceramic piece can be sucked and blown only by manipulating the reversing valve, thereby increasing the speed at which the ceramic piece is separated from the suction cup device to the radiator and improving the working efficiency.

[0012] Furthermore, a sealing ring is provided between the vacuum suction cup and the suction cup mounting column; and a sealing gasket is provided between the cover plate and the suction cup mounting seat and surrounds the outer edge of the opening of the gas main channel.

[0013] The above preferred solution is adopted to improve the sealing performance.

[0014] Furthermore, it also includes a ceramic sheet arrangement mechanism, which includes a linear shift mechanism and a ceramic sheet arrangement box. The linear shift mechanism is installed on the ceramic sheet placement seat of the suction cup device. A quick positioning structure is provided between the ceramic sheet arrangement box and the slider of the linear shift mechanism. A stacking cavity for stacking ceramic sheets is provided in the ceramic sheet arrangement box. The bottom of the stacking cavity is provided with a lower opening for ceramic sheets to fall into. Under the drive of the linear shift mechanism, the lower opening of the stacking cavity of the ceramic sheet arrangement box is relatively matched with the respective second ceramic sheet positioning grooves arranged in a row on the ceramic sheet placement seat.

[0015] By adopting the above preferred solution, the speed of discharging ceramic sheets on the suction cup device is increased, thereby improving the working efficiency.

[0016] Furthermore, the linear shifting mechanism includes a rodless cylinder, a slice discharge switch and a slice discharge reversing valve, the air inlet end of the slice discharge switch is connected to the air outlet of the air pump via a pipeline, the air outlet end of the slice discharge switch is connected to the air inlet end of the slice discharge reversing valve via a pipeline, the first air outlet end of the slice discharge reversing valve is connected to one air port of the rodless cylinder, and the second air outlet end of the slice discharge reversing valve is connected to the other air port of the rodless cylinder.

[0017] Furthermore, speed regulating valves are installed at the two air ports of the rodless cylinder.

[0018] Adopting the above-mentioned preferred solution, the pneumatic linear displacement mechanism of the rodless cylinder helps to make the suction cup device lighter.

[0019] Furthermore, the rapid positioning structure includes a positioning iron plate fixedly mounted on the slider of the linear displacement mechanism and a magnet and a positioning pin fixedly mounted on the lower surface of the ceramic sheet arrangement box, and the positioning iron plate is provided with a positioning hole matching the positioning pin.

[0020] The above preferred solution facilitates the rapid docking of the ceramic sheet arrangement box and the suction cup device, thereby improving operating efficiency.

[0021] Furthermore, if the thickness of the ceramic sheet is d, the depth of the second ceramic sheet positioning groove of the ceramic sheet placement seat is a, and the distance between the bottom surface of the stacking cavity of the ceramic sheet arrangement box and the upper surface of the ceramic sheet placement seat is b, then, 0 <a<d,d-a<b<2d-a。

[0022] Furthermore, outward-expanding chamfered surfaces are provided on both sides of the lower opening of the stacking cavity that are perpendicular to the moving direction of the ceramic sheet arrangement box. The angle between the chamfered surface and the horizontal plane is 40-60°, and the distance between the chamfered surfaces in the height direction is c, then c=2d-a-b+0.2mm.

[0023] The adoption of the above preferred solution helps the front end of the bottom ceramic sheet in the forward direction to first obliquely enter the second ceramic sheet positioning groove, thereby improving the smoothness and reliability of the placement of the ceramic sheet.

[0024] The method for applying thermal grease to a radiator ceramic sheet includes the following steps:

[0025] Step 1: Divide the first ceramic sheet positioning groove of the radiator into multiple areas, make a relay positioning frame, design through positioning openings on the relay positioning frame to match the multiple areas, make a suction cup device that matches the through positioning openings, and position the second ceramic sheet positioning groove on the suction cup device to match the first ceramic sheet positioning groove in the through positioning openings;

[0026] Step 2: Place the relay positioning frame on the radiator and align it;

[0027] Step 3: Place a ceramic sheet in the second ceramic sheet positioning groove of the ceramic sheet placement seat of the suction cup device, evacuate the main gas channel through the air control mechanism, and the vacuum suction cup sucks and presses the ceramic sheet against the second ceramic sheet positioning groove, and apply thermal grease to the exposed first surface of the ceramic sheet;

[0028] Step 4: Flip the suction cup device 180 degrees and place it in the through-hole of the relay positioning frame;

[0029] Step 5: The air control mechanism blows air into the main gas channel, and the airflow in the vacuum suction cup blows the ceramic piece into the first ceramic piece positioning groove on the heat sink, and the suction cup device is removed;

[0030] Step 6: Apply thermal grease to the second exposed surface of the ceramic plate on the radiator.

[0031] Furthermore, in step 3, a ceramic sheet is placed in the second ceramic sheet positioning groove of the ceramic sheet placement seat of the suction cup device, specifically including: stacking the ceramic sheets in the stacking cavity of the ceramic sheet arrangement box, positioning and installing the ceramic sheet arrangement box and the slider of the linear shift mechanism, starting the linear shift mechanism, and the ceramic sheets enter the respective second ceramic sheet positioning grooves of the suction cup device in turn. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a structural schematic diagram of an embodiment of the pneumatic device of the present invention.

[0034] Figure 2 It is a cross-sectional view of an embodiment of the pneumatic device of the present invention.

[0035] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0036] Figure 4 It is a structural diagram of the relay positioning frame and the radiator.

[0037] Figure 5 It is a top view of one embodiment of the suction cup device.

[0038] Figure 6 It is a structural diagram of an implementation method of the air control mechanism.

[0039] Figure 7 This is a schematic diagram with the ceramic plate placement seat facing upward.

[0040] Figure 8 It is a schematic diagram of the combination of the ceramic sheet discharging mechanism and the suction cup device.

[0041] Figure 9 It is a cross-sectional view of the ceramic sheet discharging mechanism and the suction cup device in the combined state and perpendicular to the moving direction.

[0042] Figure 10 It is a cross-sectional view of the ceramic sheet arrangement mechanism and the suction cup device in a combined state vertically parallel to the moving direction.

[0043] Figure 11 yes Figure 10 A partial enlarged view of point B in the middle.

[0044] Figure 12 yes Figure 11 A partial enlarged view of point C in the middle.

[0045] The numbers and letters in the figure represent the names of the corresponding parts:

[0046] 10- radiator; 11- first ceramic plate positioning groove;

[0047] 20-relay positioning frame; 21-through positioning port;

[0048] 30 - Suction cup device; 31 - Ceramic disc placement seat; 311 - Second ceramic disc positioning groove; 312 - Suction cup through-hole; 32 - Suction cup mounting seat; 321 - Suction cup mounting column; 322 - Gas sub-channel; 323 - Vacuum suction cup; 324 - Gas main channel; 33 - Cover plate; 34 - Gas control mechanism; 341 - Air inlet switch; 342 - Reversing valve; 3421 - Air inlet; 3422 - First air outlet; 3423 - Second air outlet; 3424 - First branch pipeline; 3425 - Second branch pipeline; 343 - Vacuum generator; 3431 - Air inlet end; 3432 - Air outlet end; 3433 - Vacuum end; 351 - Sealing ring; 352 - Sealing pad;

[0049] 40 - Ceramic disc discharge mechanism; 41 - Linear displacement mechanism; 411 - Rodless cylinder; 4111 - Slider; 4112 - Positioning iron plate; 412 - Disc discharge switch; 413 - Disc discharge reversing valve; 414 - Speed ​​regulating valve; 42 - Ceramic disc discharge box; 421 - Disc lamination cavity; 422 - Magnet; 423 - Positioning pin; 424 - Chamfered surface;

[0050] 50-ceramic pieces. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] like Figure 1-12 As shown, a pneumatic device for applying thermal grease to a radiator ceramic plate comprises:

[0053] The heat sink 10 has a plurality of first ceramic sheet positioning grooves 11 on its surface for arranging ceramic sheets;

[0054] The relay positioning frame 20 has a contour positioning structure that matches the surface contour of the radiator. The relay positioning frame 20 is also provided with a plurality of through positioning openings 21, each of which surrounds a plurality of first ceramic piece positioning grooves 11;

[0055] The suction cup device 30 includes a ceramic wafer placement seat 31, a suction cup mounting seat 32, a cover plate 33 and an air control mechanism 34. The bottom of the ceramic wafer placement seat 31 is provided with a positioning structure that matches the through positioning port 21. The bottom surface of the ceramic wafer placement seat 31 is provided with a plurality of second ceramic wafer positioning grooves 311 for placing ceramic wafers. The second ceramic wafer positioning grooves 311 are arranged vertically opposite to the first ceramic wafer positioning grooves 11 on the radiator. A suction cup through hole 312 is provided in the middle of the second ceramic wafer positioning groove 311. The suction cup mounting seat 32 is installed on the ceramic wafer placement seat 31. Above, the lower surface of the suction cup mounting seat 32 is provided with a plurality of suction cup mounting columns 321 extending downward, and the center of the suction cup mounting column 321 is provided with a gas sub-channel 322 running through the upper and lower parts, and a vacuum suction cup 323 is installed below the suction cup mounting column 321; the cover plate 33 is provided on the top of the suction cup mounting seat 32, and a gas main channel 324 connected to all the gas sub-channels 322 is provided between the cover plate 33 and the suction cup mounting seat 32; the gas control mechanism 34 is connected to the gas main channel 324, and the gas control mechanism 34 is used to control the extraction of vacuum or the blowing of gas into the gas main channel 324.

[0056] The beneficial effects of adopting the above technical solution are: the ceramic sheet is sucked up by the suction cup device and turned over and placed on the radiator without moving the radiator. For larger radiators, the ceramic sheet can be coated and loaded in multiple times through a smaller suction cup device, or multiple different smaller suction cup devices can be configured, which facilitates the application of thermal grease and reduces labor intensity.

[0057] like Figure 6 As shown, in some other embodiments of the present invention, the air control mechanism 34 includes an air pump (not shown in the figure), an air inlet switch 341, a reversing valve 342 and a vacuum generator 343. The reversing valve 342 has an air inlet 3421, a first air outlet 3422 and a second air outlet 3423. The reversing valve 342 is used to control whether its air inlet 3421 is connected to its first air outlet 3422 alone or whether its air inlet 3421 is connected to its second air outlet 3423 alone; the air outlet of the air pump is connected to the air inlet switch 341 via a pipeline. The air inlet of the air inlet switch 341 is connected to the air inlet of the reversing valve 342 via a pipeline. The first air outlet 3422 of the reversing valve 342 is connected to the main gas channel 324 of the suction cup device via a first branch pipeline 3424. The second air outlet 3423 of the reversing valve is connected to the air inlet end of the vacuum generator 343 via a second branch pipeline 3425. The air outlet end 3432 of the vacuum generator 343 is open to the atmosphere, and the vacuum end 3433 of the vacuum generator is connected to the main gas channel 324 of the suction cup device. The beneficial effect of adopting the above technical solution is that the ceramic piece can be sucked and blown away by simply operating the reversing valve, which increases the speed at which the ceramic piece is separated from the suction cup device and transferred to the heat sink, thereby improving working efficiency.

[0058] like Figure 3 As shown, in other embodiments of the present invention, a sealing ring 351 is provided between the vacuum suction cup 323 and the suction cup mounting post 321; and a sealing gasket 352 is provided between the cover plate 33 and the suction cup mounting base 32, surrounding the outer edge of the opening of the main gas channel 324. The beneficial effect of adopting the above technical solution is: improving the sealing performance.

[0059] like Figure 8-12 As shown, in some other embodiments of the present invention, a ceramic sheet arrangement mechanism 40 is further included. The ceramic sheet arrangement mechanism 40 includes a linear shift mechanism 41 and a ceramic sheet arrangement box 42. The linear shift mechanism 41 is installed on the ceramic sheet placement seat 31 of the suction cup device. A quick positioning structure is provided between the ceramic sheet arrangement box 42 and the slider of the linear shift mechanism 41. A stacking cavity 421 for stacking ceramic sheets 50 is provided in the ceramic sheet arrangement box 42. The bottom of the stacking cavity 421 is provided with a lower opening for the ceramic sheets 50 to fall. Under the drive of the linear shift mechanism 41, the lower opening of the stacking cavity 421 of the ceramic sheet arrangement box 42 is sequentially matched with each second ceramic sheet positioning groove 311 arranged in a row on the ceramic sheet placement seat 31. The beneficial effects of adopting the above technical solution are: improving the speed of arranging ceramic sheets on the suction cup device and improving working efficiency.

[0060] like Figure 8-12 As shown, in some other embodiments of the present invention, the linear displacement mechanism 41 includes a rodless cylinder 411, a slice discharge switch 412 and a slice discharge reversing valve 413. The air inlet of the slice discharge switch 412 is connected to the air outlet of the air pump via a pipeline, and the air outlet of the slice discharge switch 412 is connected to the air inlet of the slice discharge reversing valve 413 via a pipeline. The first air outlet of the slice discharge reversing valve 413 is connected to one air port of the rodless cylinder 411, and the second air outlet of the slice discharge reversing valve 413 is connected to the other air port of the rodless cylinder 411. A speed regulating valve 414 is also installed at the two air ports of the rodless cylinder 411. The beneficial effect of adopting the above technical solution is that the pneumatic linear displacement mechanism of the rodless cylinder helps to make the suction cup device lighter.

[0061] like Figure 9 As shown, in other embodiments of the present invention, the rapid positioning structure includes a positioning iron plate 4112 fixedly mounted on the slider of the linear shift mechanism 41, and a magnet 422 and a positioning pin 423 fixedly mounted on the lower surface of the ceramic sheet arrangement box 42. The positioning iron plate 4112 is provided with a positioning hole that matches the positioning pin 423. The beneficial effect of adopting the above technical solution is to facilitate the rapid docking of the ceramic sheet arrangement box and the suction cup device, thereby improving operating efficiency.

[0062] like Figure 12As shown, in some other embodiments of the present invention, the thickness of the ceramic sheet 50 is d, the depth of the second ceramic sheet positioning groove 311 of the ceramic sheet placement seat is a, and the distance between the bottom surface of the stacking cavity of the ceramic sheet arrangement box 42 and the upper surface of the ceramic sheet placement seat 31 is b, then, 0 <a<d,d-a<b<2d-a。在叠片腔体421的下开口与陶瓷片排片盒移动方向垂直的两侧边设有外扩的倒角面424,倒角面424与水平面的夹角为40-60°,倒角面424在高度方向上的距离为c,则c=2d-a-b+0.2mm。采用上述技术方案的有益效果是:有助于底层陶瓷片在前进方向的前端先斜向进入至第二陶瓷片定位槽内,提高陶瓷片放置的顺畅可靠性。

[0063] The method for applying thermal grease to a radiator ceramic sheet includes the following steps:

[0064] Step 1: Divide the first ceramic sheet positioning groove of the radiator into multiple areas, make a relay positioning frame, design through positioning openings on the relay positioning frame to match the multiple areas, make a suction cup device that matches the through positioning openings, and position the second ceramic sheet positioning groove on the suction cup device to match the first ceramic sheet positioning groove in the through positioning openings;

[0065] Step 2: Place the relay positioning frame on the radiator and align it;

[0066] Step 3: Place a ceramic sheet in the second ceramic sheet positioning groove of the ceramic sheet placement seat of the suction cup device, evacuate the main gas channel through the air control mechanism, and the vacuum suction cup sucks and presses the ceramic sheet against the second ceramic sheet positioning groove, and apply thermal grease to the exposed first surface of the ceramic sheet;

[0067] Step 4: Flip the suction cup device 180 degrees and place it in the through-hole of the relay positioning frame;

[0068] Step 5: The air control mechanism blows air into the main gas channel, and the airflow in the vacuum suction cup blows the ceramic piece into the first ceramic piece positioning groove on the heat sink, and the suction cup device is removed;

[0069] Step 6: Apply thermal grease to the exposed second surface of the ceramic plate on the radiator.

[0070] Furthermore, in step 3, a ceramic sheet is placed in the second ceramic sheet positioning groove of the ceramic sheet placement seat of the suction cup device, specifically including: stacking the ceramic sheets in the stacking cavity of the ceramic sheet arrangement box, positioning and installing the ceramic sheet arrangement box and the slider of the linear shift mechanism, starting the linear shift mechanism, and the ceramic sheets enter the respective second ceramic sheet positioning grooves of the suction cup device in turn.

[0071] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable ordinary technicians in this field to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. The pneumatic device for applying thermal grease to the radiator ceramic piece is characterized by: include: The heat sink has a plurality of first ceramic sheet positioning grooves on its surface for arranging ceramic sheets; A relay positioning frame having a contour positioning structure for matching and positioning with the surface contour of the radiator, wherein the relay positioning frame is further provided with a plurality of through positioning openings, each of which is surrounded by a plurality of first ceramic piece positioning grooves; The suction cup device comprises a ceramic piece placement seat, a suction cup mounting seat, a cover plate and an air control mechanism, wherein the bottom of the ceramic piece placement seat is provided with a positioning structure matching the through positioning port, the bottom surface of the ceramic piece placement seat is provided with a plurality of second ceramic piece positioning grooves for placing ceramic pieces, the second ceramic piece positioning grooves are arranged to be vertically opposite to the first ceramic piece positioning grooves on the radiator, and a suction cup through hole is provided in the middle of the second ceramic piece positioning groove; the suction cup mounting seat is installed above the ceramic piece placement seat, the lower surface of the suction cup mounting seat is provided with a plurality of suction cup mounting columns extending downward, the center of the suction cup mounting column is provided with a gas sub-channel that passes through the upper and lower parts, and a vacuum suction cup is installed below the suction cup mounting column; the cover plate is provided above the suction cup mounting seat, and a gas main channel connected to all the gas sub-channels is provided between the cover plate and the suction cup mounting seat; the air control mechanism is connected to the gas main channel, and the air control mechanism is used to control the extraction of vacuum or blowing of gas into the gas main channel.

2. The pneumatic device for applying thermal grease to radiator ceramic sheets according to claim 1, characterized in that: The air control mechanism includes an air pump, an air inlet switch, a reversing valve and a vacuum generator. The reversing valve has an air inlet, a first air outlet and a second air outlet. The reversing valve is used to control the air inlet to be separately connected to the first air outlet or the air inlet to be separately connected to the second air outlet; the air outlet of the air pump is connected to the air inlet of the air inlet switch via a pipeline, the air outlet of the air inlet switch is connected to the air inlet of the reversing valve via a pipeline, the first air outlet of the reversing valve is connected to the main gas channel of the suction cup device via a first branch pipeline, the second air outlet of the reversing valve is connected to the air inlet end of the vacuum generator via a second branch pipeline, the air outlet end of the vacuum generator is connected to the atmosphere, and the vacuum end of the vacuum generator is connected to the main gas channel of the suction cup device.

3. The pneumatic device for applying thermal grease to radiator ceramic sheets according to claim 1, characterized in that: A sealing ring is provided between the vacuum suction cup and the suction cup mounting column; a sealing gasket is provided between the cover plate and the suction cup mounting seat and surrounds the outer edge of the opening of the gas main channel.

4. The pneumatic device for applying thermal grease to radiator ceramic sheets according to claim 1, characterized in that: It also includes a ceramic sheet arrangement mechanism, which includes a linear shift mechanism and a ceramic sheet arrangement box. The linear shift mechanism is installed on the ceramic sheet placement seat of the suction cup device. A quick positioning structure is provided between the ceramic sheet arrangement box and the slider of the linear shift mechanism. A stacking cavity for stacking ceramic sheets is provided in the ceramic sheet arrangement box. The bottom of the stacking cavity is provided with a lower opening for ceramic sheets to fall into. Under the drive of the linear shift mechanism, the lower opening of the stacking cavity of the ceramic sheet arrangement box is relatively matched with the respective second ceramic sheet positioning grooves arranged in a row on the ceramic sheet placement seat.

5. The pneumatic device for applying thermal grease to radiator ceramic sheets according to claim 4, characterized in that: The linear shifting mechanism includes a rodless cylinder, a slice discharge switch and a slice discharge reversing valve. The air inlet end of the slice discharge switch is connected to the air outlet of the air pump via a pipeline, the air outlet end of the slice discharge switch is connected to the air inlet end of the slice discharge reversing valve via a pipeline, the first air outlet end of the slice discharge reversing valve is connected to one air port of the rodless cylinder, and the second air outlet end of the slice discharge reversing valve is connected to the other air port of the rodless cylinder.

6. The pneumatic device for applying thermal grease to radiator ceramic sheets according to claim 5, characterized in that: Speed ​​regulating valves are also installed at the two air ports of the rodless cylinder.

7. The pneumatic device for applying thermal grease to radiator ceramic sheets according to claim 4, characterized in that: The rapid positioning structure includes a positioning iron plate fixedly mounted on the slider of the linear displacement mechanism and a magnet and a positioning pin fixedly mounted on the lower surface of the ceramic sheet arrangement box. The positioning iron plate is provided with a positioning hole matching the positioning pin.

8. The pneumatic device for applying thermal grease to radiator ceramic plates according to claim 4, characterized in that: Assuming the thickness of the ceramic sheet is d, the depth of the second ceramic sheet positioning groove of the ceramic sheet placement seat is a, and the distance between the bottom surface of the stacking cavity of the ceramic sheet arrangement box and the upper surface of the ceramic sheet placement seat is b, then, 0 <a<d,d-a<b<2d-a。 9. The pneumatic device for applying thermal grease to radiator ceramic plates according to claim 8, characterized in that: An outward-expanding chamfered surface is provided on both sides of the lower opening of the stacking cavity that is perpendicular to the moving direction of the ceramic sheet arrangement box. The angle between the chamfered surface and the horizontal plane is 40-60°. The distance between the chamfered surface in the height direction is c, then c=2d-a-b+0.2mm.

10. A method for applying thermal grease to a radiator ceramic sheet, characterized in that: The pneumatic device for applying thermal grease to a radiator ceramic sheet according to any one of claims 1 to 9 comprises the following steps: Step 1: Divide the first ceramic sheet positioning groove of the radiator into multiple areas, make a relay positioning frame, design through positioning openings on the relay positioning frame to match the multiple areas, make a suction cup device that matches the through positioning openings, and position the second ceramic sheet positioning groove on the suction cup device to match the first ceramic sheet positioning groove in the through positioning openings; Step 2: Place the relay positioning frame on the radiator and align it; Step 3: Place a ceramic sheet in the second ceramic sheet positioning groove of the ceramic sheet placement seat of the suction cup device, evacuate the main gas channel through the air control mechanism, and the vacuum suction cup sucks and presses the ceramic sheet against the second ceramic sheet positioning groove, and apply thermal grease to the exposed first surface of the ceramic sheet; Step 4: Flip the suction cup device 180 degrees and place it in the through-hole of the relay positioning frame; Step 5: The air control mechanism blows air into the main gas channel, and the airflow in the vacuum suction cup blows the ceramic piece into the first ceramic piece positioning groove on the heat sink, and the suction cup device is removed; Step 6: Apply thermal grease to the exposed second surface of the ceramic plate on the radiator.

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