Integrated equipment for dispensing thermal grease and pasting cooling fins

Abstract

The invention discloses thermal grease dispensing and cooling fin pasting integrated equipment, and relates to the technical field of PCBA board processing, the thermal grease dispensing and cooling fin pasting integrated equipment comprises a thermal grease dispensing mechanism and a cooling fin pasting mechanism, the cooling fin pasting mechanism comprises a vibration disc used for conveying cooling fins, and the thermal grease dispensing and cooling fin pasting integrated equipment further comprises a jacking mechanism and a reverse conveying mechanism; the jacking mechanism is used for jacking the cooling fins at the tail end of the vibration disc. And when the jacking mechanism jacks the radiating fin at the tail end, the reverse conveying mechanism operates to force the radiating fin adjacent to the radiating fin at the tail end to be away from the jacking mechanism. According to the integrated equipment for dispensing the thermal grease and pasting the cooling fins, when the cooling fins at the tail end of the vibration disc are jacked up through the jacking mechanism, the cooling fins adjacent to the cooling fins at the tail end can be forced to be away from the jacking mechanism through the reverse conveying mechanism, and the other cooling fins are prevented from moving into the ascending stroke of the jacking mechanism as much as possible; and the situation that the cooling fins are influenced by the jacking mechanism to turn over is avoided as much as possible.

Description

Technical Field

[0001] This invention relates to the field of PCBA board processing technology, specifically to an integrated device for applying thermal paste and attaching heat sinks. Background Technology

[0002] PCBA boards generally refer to printed circuit board assemblies. Heat sinks are common auxiliary components on PCBAs. Their main function is to effectively conduct and dissipate the heat generated by high-power components during operation to the surrounding environment. Heat sinks are generally installed by applying thermal paste.

[0003] For example, the patent document with authorization announcement number CN214367099U, authorization announcement date October 8, 2021, entitled "An Automatic Heatsink Mounting Device for PCBs for 3D Printers", includes a conveying device, a carrier, a loading robot, a first robot, a second robot, and an unloading robot. The first robot can assemble the first heatsink onto the PCB, realizing automatic assembly of the PCB and the heatsink, saving manpower, with high assembly efficiency and stable quality.

[0004] In the existing technology, heat sinks need to be fed by a vibratory feeder and then gripped and attached by a robotic arm. In order to accommodate the gripping of the robotic arm, a lifting mechanism is set at the outlet of the vibratory feeder to lift the heat sink at the end so that the robotic arm can grip it. During the lifting process, the heat sinks adjacent to the end heat sink may be flipped due to the lifting mechanism, which will affect the normal feeding of the heat sinks. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated device for applying thermal paste and attaching heat sinks, so as to solve the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An integrated device for applying thermal paste and attaching heat sinks includes a thermal paste application mechanism and a heat sink attachment mechanism. The heat sink attachment mechanism includes a vibratory feeder for conveying heat sinks and further includes:

[0008] A lifting mechanism is used to lift the heat sink at the end of the vibratory feeder;

[0009] A reverse conveying mechanism operates when the lifting mechanism lifts the end heat sink, thereby forcing the heat sink adjacent to the end heat sink away from the lifting mechanism.

[0010] The aforementioned integrated device for applying heat dissipation paste and heat sink has a baffle at the outlet of the vibratory feeder.

[0011] The above-mentioned integrated equipment for applying thermal paste and heat sinks includes a lifting mechanism comprising a cylinder and a lifting platform fixed to the top of the cylinder. The lifting platform is provided with a lifting plate, and the vibratory feeder is provided with an adaptation groove that is compatible with the lifting plate.

[0012] In the aforementioned integrated device for applying thermal paste and heat sink, the bottom of the lifting plate is equipped with a baffle, which is located in the adapter groove. When the lifting platform rises, the baffle prevents the heat sink from approaching the baffle block.

[0013] The aforementioned integrated equipment for applying thermal paste and heat sinks includes a reverse conveying mechanism comprising a rotating groove constructed on a vibratory plate, wherein a friction roller is rotatably connected in the rotating groove.

[0014] In the aforementioned integrated device for applying thermal paste and heat sinks, the vibratory feeder is equipped with two friction rollers that rotate synchronously and in the same direction.

[0015] The aforementioned integrated device for applying thermal paste and heat sink also includes a transmission component. The transmission component drives the friction roller to rotate based on the lifting stroke of the lifting platform. When the lifting platform rises, the friction roller forces the heat sink adjacent to the end heat sink away from the lifting plate. When the lifting platform falls, the friction roller forces the heat sink into the stop block.

[0016] The aforementioned integrated equipment for applying thermal paste and heat sinks includes a transmission component comprising a friction wheel coaxially fixed to the friction roller and a friction strip fixed to the lifting platform.

[0017] In the aforementioned integrated equipment for applying thermal paste and attaching heat sinks, when the lifting platform rises, the friction strip drives the friction wheel and friction roller to rotate, thereby forcing the heat sink adjacent to the end heat sink away from the lifting plate.

[0018] In the aforementioned integrated equipment for applying thermal paste and heat sink, when the lifting platform descends, the friction strip drives the friction wheel and friction roller to rotate, thereby forcing the heat sink to approach the stop block.

[0019] In the above technical solution, the present invention provides an integrated device for applying heat dissipation paste and applying heat sinks. When the heat sink at the end of the vibratory plate is lifted by the lifting mechanism, the reverse conveying mechanism can force the heat sink adjacent to the end heat sink away from the lifting mechanism, so as to avoid the other heat sinks from moving into the upward stroke of the lifting mechanism and to avoid the heat sinks from flipping due to the influence of the lifting mechanism. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a stop structure provided in another embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a friction roller structure provided in another embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a friction wheel structure provided in another embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of a protrusion structure provided in another embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of a side guard structure provided in another embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of a connecting plate structure provided in another embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of a connecting rod structure provided in another embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of a rotating shaft structure provided in another embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the arc-shaped part structure provided in another embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of a linkage structure provided in another embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Vibratory feeder; 2. Heat sink; 3. Stop block; 4. Discharge channel; 5. Cylinder; 6. Lifting platform; 7. Lifting plate; 8. Baffle; 9. Friction roller; 10. Friction wheel; 11. Friction strip; 12. First extension; 13. Protrusion; 14. Side stop; 15. Vertical groove; 16. Second extension; 17. Elastic element; 18. Connecting part; 19. Connecting rod; 20. Rotating shaft; 21. Contact part; 22. Arc-shaped part; 23. Slide rod; 24. Return spring; 25. Linkage rod; 26. Connecting plate. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Reference Figure 1-11 This invention provides an integrated device for applying thermal paste and attaching heat sinks, including a thermal paste application mechanism and a heat sink attachment mechanism. The heat sink attachment mechanism includes a vibratory feeder 1 for conveying heat sinks 2, a lifting mechanism, and a reverse conveying mechanism. The lifting mechanism is used to lift the heat sink 2 at the end of the vibratory feeder 1. When the lifting mechanism lifts the end heat sink 2, the reverse conveying mechanism operates to force the heat sink 2 adjacent to the end heat sink 2 away from the lifting mechanism.

[0036] Specifically, the PCBA board undergoes a thermal paste application process and a heatsink application process during processing. During this process, the PCBA board is conveyed via a conveyor mechanism. The thermal paste application mechanism and the heatsink application mechanism are sequentially positioned along the conveyor path. The thermal paste application mechanism applies thermal paste to the PCBA board, and the heatsink application mechanism applies the heatsink 2 to the applied position to adhere it to the PCBA board. The heatsink application mechanism typically uses a combination of a robotic arm and a vibratory feeder 1, as is common in existing technologies. While the vibratory feeder 1 continuously feeds the material, the robotic arm picks up the heatsink 2 and performs the application operation. This is existing technology and will not be elaborated upon here. The innovation of this invention lies in the provision of a lifting mechanism and a reverse conveying mechanism at the outlet of the vibratory feeder 1. The lifting mechanism can be a lifting structure from the prior art, and the reverse conveying mechanism can be a conveyor wheel or conveyor belt structure from the prior art. When the robotic arm grasps the heat sink 2, the lifting mechanism can lift the heat sink 2 at the end of the vibratory feeder 1 (for ease of understanding, the heat sink 2 at the end of the vibratory feeder 1 will be referred to as the first heat sink, i.e., the lifted heat sink 2), to facilitate the robotic arm's grasping. During the lifting process, the reverse conveying mechanism can force the heat sink 2 adjacent to the end heat sink 2 away from the lifting mechanism (for ease of understanding, the heat sink 2 adjacent to the end heat sink 2 will be referred to as the second heat sink, such as...). Figure 2In the image, from left to right, the components are a first heat sink, a second heat sink, and other heat sinks 2. During normal operation of the vibratory feeder 1, the multiple heat sinks 2 tend to press against the first heat sink. If the first heat sink is directly lifted, the second heat sink may be overturned by friction. If a top plate is installed at the outlet of the vibratory feeder 1 to restrict the top of the second heat sink, the first heat sink can be lifted directly. However, there is another issue: when the first heat sink has dimensional errors, especially when its length is short, the second heat sink may extend above the lifting mechanism. In this case, the lifting structure will be obstructed by the second heat sink, severely affecting the continuity of material feeding. If the length of the lifting structure is shortened, it will affect the stability of the heat sink 2 during lifting. Therefore, a reverse conveying mechanism is provided to force the second heat sink away from the first heat sink when the lifting mechanism lifts it, minimizing interference between the lifting mechanism and the heat sink 2.

[0037] In another embodiment of the present invention, a stop block 3 is further provided at the outlet of the vibratory feeder 1. Specifically, a discharge channel 4 is provided at the outlet of the vibratory feeder 1. The discharge channel 4 has a U-shaped cross-section. The stop block 3 is fixed at the end of the discharge channel 4 to block the heat sink 2 and prevent the heat sink 2 from falling out of the discharge channel 4 as much as possible.

[0038] Preferably, the lifting mechanism includes a cylinder 5 and a lifting platform 6 fixed to the top of the cylinder 5. A lifting plate 7 is constructed on the lifting platform 6, and an adapter groove adapted to the lifting plate 7 is constructed on the vibrating plate 1. A baffle 8 is constructed at the bottom of the lifting plate 7, located in the adapter groove. When the lifting platform 6 rises, the baffle 8 prevents the heat sink 2 from approaching the stop block 3. Specifically, the vibrating plate 1 and the cylinder 5 are both fixed to a main structure (not shown). The cylinder 5 can drive the lifting platform 6 to move vertically on the main structure. The adapter groove is constructed at the end of the discharge channel 4, and the adapter groove and the stop block 3 are staggered, allowing the lifting plate 7 to rise or fall within the adapter groove. The baffle 8 is fixed on the side of the lifting plate 7 away from the lifting platform 6, and the baffle 8 and the lifting plate 7 form an "L" shape. With this configuration, when the lifting plate 7 descends to the bottom of the adapter slot, the heat sink 2 in the discharge channel 4 can sequentially approach and abut against the stop block 3. When it is necessary to grab the heat sink 2, the cylinder 5 drives the lifting platform 6 to rise, so that the first heat sink is lifted by the lifting plate 7. At the same time, the stop block 8 rises with the lifting platform 6 and moves into the discharge channel 4, thereby blocking the heat sink 2 in the discharge channel 4. Until the lifting platform 6 descends again, the heat sink 2 can approach the stop block 3 without the abutment of the stop block 8.

[0039] As an alternative to the aforementioned conveyor wheel or conveyor belt, preferably, the reverse conveying mechanism includes a rotating groove constructed on the vibratory plate 1, in which a friction roller 9 is rotatably connected. Two friction rollers 9 are provided on the vibratory plate 1, rotating synchronously and in the same direction. Specifically, the rotating groove is constructed on the bottom wall of the discharge channel 4, with an open top. The diameter of the friction roller 9 is slightly smaller than the inner diameter of the rotating groove, and the top of the friction roller 9 slightly protrudes from the bottom wall of the discharge channel 4, so as to reverse the conveying of the heat sink 2 without affecting its movement along the discharge channel 4. Two sets of friction rollers 9 and rotating grooves can be correspondingly arranged, each set corresponding to the second heat sink. The two sets of friction rollers 9 can be connected by a pulley drive structure or gear drive structure in the prior art, so that the two friction rollers 9 can rotate synchronously and in the same direction. A single power source on the vibratory plate 1 can drive the two friction rollers 9 to rotate, thereby providing a force opposite to that of the vibratory plate 1 to the second heat sink, thus forcing the second heat sink and the remaining heat sinks 2 away from the first heat sink.

[0040] As an alternative to the aforementioned power source driving the friction roller 9 to rotate, a preferred embodiment further includes a transmission assembly. This transmission assembly drives the friction roller 9 to rotate based on the lifting stroke of the lifting platform 6. When the lifting platform 6 rises, the friction roller 9 forces the heat sink 2 adjacent to the end heat sink 2 away from the lifting plate 7. When the lifting platform 6 descends, the friction roller 9 forces the heat sink 2 into the stop block 3. Specifically, the transmission assembly can be a gear and rack transmission structure from the prior art to drive the friction roller 9 to rotate during the lifting process of the lifting platform 6. Preferably, the transmission assembly includes a friction wheel 10 coaxially fixed with the friction roller 9 and a friction strip 11 fixed on the lifting platform 6. The lifting platform 6 has a first extension 12, and the friction strip 11 is fixed to the end of the first extension 12. During the lifting process of the lifting platform 6, the first extension 12 does not interfere with the discharge channel 4. The friction strip 11 and the friction wheel 10 are connected by frictional transmission, and during the lifting process of the lifting platform 6, the friction strip 11 and the friction wheel 10 can be driven or separated. When the lifting platform 6 rises, the friction strip 11 drives the friction wheel 10 and the friction roller 9 to rotate, so as to force the heat sink 2 adjacent to the end heat sink 2 away from the lifting plate 7; when the lifting platform 6 falls, the friction strip 11 drives the friction wheel 10 and the friction roller 9 to rotate, so as to force the heat sink 2 to move closer to the stop block 3.

[0041] With this configuration, during the ascent of the lifting platform 6, the friction strip 11 first drives the friction wheel 10, thereby driving the friction roller 9 to rotate and force the second heat sink away from the lifting plate 7. When the lifting plate 7 enters the discharge channel 4, the friction strip 11 and the friction wheel 10 separate. At this time, the friction roller 9 can rotate freely, allowing the second heat sink and the remaining heat sinks 2 to approach and contact the baffle 8 under the action of the vibrating plate 1. When the lifting platform 6 descends and the lifting plate 7 moves out of the discharge channel 4, the friction strip 11 rotates again with the friction wheel 10, thereby driving the friction roller 9 to rotate in the opposite direction, thereby cooperating with the vibrating plate 1 to transport the heat sinks 2 in the discharge channel 4, so that the heat sinks 2 can approach and contact the baffle 3 as soon as possible.

[0042] In the above embodiments, after the lifting plate 7 pushes the heat sink 2 out of the discharge channel 4, the area around the heat sink 2 is unrestricted, and the position of the heat sink 2 may deviate due to the operation of the lifting mechanism or the gripper. In another embodiment provided by the present invention, the lifting plate 7 is further provided with a protrusion 13, the lifting platform 6 is provided with a side baffle 14, and the discharge channel 4 is provided with a vertical groove 15 adapted to the side baffle 14; the protrusion 13 and the baffle 3 are staggered and correspond to the adapted groove. When the lifting plate 7 moves into the adapted groove, the side wall of the protrusion 13 fits against the side wall of the baffle 3. When the lifting plate 7 lifts the heat sink 2, the protrusion 13 can restrict one side of the heat sink 2; two side baffles 14 are provided on one side of the lifting platform 6, and the other side... Two side plates 14 are also provided on the side, and the side plates 14 can be fixed on the lifting platform 6. Optionally, the lifting platform 6 is constructed with a second extension 16, and the side plates 14 are fixed on the second extension 16. During the lifting process of the lifting platform 6, the second extension 16 does not interfere with the discharge channel 4. When the lifting plate 7 descends, the side plates 14 can move into the vertical groove 15. Until the lifting plate 7 rises, the two side plates can restrict the opposite sides of the heat sink 2, thereby minimizing the displacement of the heat sink 2 on the lifting plate 7.

[0043] Because of the vertical groove 15 on the side wall of the discharge channel 4, the heat sink 2 may get stuck during the conveying process (when the heat sink 2 is close to the stop block 3, the side stop 14 is located below the vertical groove 15, such as...). Figure 6As shown). As an alternative to the above embodiment where the side guard 14 is fixed to the lifting platform 6 by the second extension 16 (that is, the second extension 16 can be omitted in this embodiment, or the second extension 16 can be retained, but the second extension 16 is not fixed to the lifting platform 6), preferably, the side guard 14 is slidably connected to the lifting platform 6, and an elastic member 17 is provided between the side guard 14 and the lifting platform 6 to force them to move closer to each other. The side guard 14 is provided with a connecting part 18. When the lifting platform 6 descends, the connecting part 18 abuts against the stop block 3 so that the side plate remains in the vertical groove 15; the bottom end of the baffle 8 is fixed. A connecting plate 26 is provided, on which a sliding groove is constructed. A connecting rod 19 is constructed on the side guard 14, and the connecting rod 19 is slidably connected in the sliding groove (the side guard 14 is slidably connected to the connecting plate 26, and the connecting plate 26 and the lifting platform 6 are relatively fixed, that is, the side guard 14 and the lifting platform 6 are slidably arranged relative to each other). The elastic element 17 can be a spring structure, which is set in the sliding groove. One end of the spring is fixed to the inner wall of the sliding groove, and the other end is fixed to the connecting rod 19, so that the side guard 14 is forced to move closer to the connecting plate 26 by the spring, thereby forcing the side guard 14 and the lifting platform 6 to move closer to each other in the vertical direction. Two side guards 14 are provided on one side of the lifting platform 6, and a connecting part 18 is fixed to the top of the two side guards 14 so that the connecting part 18 and the two side guards 14 form an inverted "U" shape. With this configuration, when the lifting plate 7 lifts the heat sink 2, the side baffle 14 can approach the lifting platform 6 (or the lifting plate 7) under the action of the elastic element 17, so that the protrusion 13 and the side baffle 14 can be kept at a height lower than the heat sink 2, which is convenient for the robotic arm to grasp the heat sink 2 for patching operation; when the lifting platform 6 descends, the connecting part 18 can abut against the top wall of the discharge channel 4, so that the side baffle 14 is in the vertical groove 15. Then, the lifting platform 6 continues to descend and can move relative to the side baffle 14, thereby blocking the vertical groove 15 through the side baffle 14, and minimizing the possibility of the heat sink 2 getting stuck in the vertical groove 15 when it is transported in the discharge channel 4.

[0044] In another embodiment of the present invention, the baffle 8 is further provided with a movable groove, the top of which is open. A rotating shaft 20 is rotatably connected within the movable groove. The rotating shaft 20 has an abutment portion 21 and an arc-shaped portion 22. A torsion spring is provided between the rotating shaft 20 and the inner wall of the movable groove. The torsion spring can force the arc-shaped portion 22 to move out of the movable groove, thereby abutting one side of the heat sink 2 on the lifting plate 7. This, in conjunction with the protrusion 13 and the side stop 14, restricts the position of the heat sink 2. A sliding rod 23 is slidably connected within the movable groove. A return spring 24 is fixed to the inner wall of the movable groove. The other end of the return spring 24 is fixed to the outer wall of the sliding rod 23, so that the return spring 24 forces the sliding rod 23 to move upward and press against the abutment portion 21. The elastic force of the return spring 24 is greater than that of the torsion spring, allowing the sliding rod 23 to move upward and press against the abutment portion 21. The action of the pressing contact part 21 forces the rotating shaft 20 to rotate, thereby driving the arc-shaped part 22 to retract into the movable groove; the lifting platform 6 is provided with two lifting plates 7 and baffles 8, and each of the two baffles 8 is provided with movable grooves and sliding rods 23, etc. The connecting plate 26 is constructed with a fitting groove, which extends into the two movable grooves on both sides. A linkage rod 25 is provided in the fitting groove, and the two ends of the linkage rod 25 are fixed to the two sliding rods 23 respectively. Under the action of the return spring 24, the linkage rod 25 is located above the connecting plate 26; during the process of the lifting platform 6 rising, the connecting plate 26 rises to approach the bottom wall of the discharge channel 4, until the lifting platform 6 rises to the top of its stroke, the bottom wall of the discharge channel 4 forces the linkage rod 25 to retract into the fitting groove, so that the contact part 21 loses the contact of the sliding rod 23, and the arc-shaped part 22 contacts the heat sink 2 under the action of the torsion spring. The advantage of this arrangement is that when the lifting platform 6 descends, the linkage rod 25 and the slide rod 23 are at the top of their sliding stroke under the action of the return spring 24. The slide rod 23 presses against the contact part 21 and forces the rotating shaft 20 to rotate, thereby forcing the arc-shaped part 22 to retract into the movable groove, minimizing the impact on the use of the lifting plate 7 and the baffle 8. Until the lifting platform 6 rises to the top of its stroke, the contact part 21 loses the pressure of the slide rod 23, and the arc-shaped part 22 abuts against the heat sink 2 under the action of the torsion spring. This, in conjunction with the protrusion 13 and the side baffle 14, limits the position of the heat sink 2 around its perimeter, minimizing the displacement of the heat sink 2 on the lifting plate 7. Furthermore, the elasticity of the torsion spring allows the arc-shaped part 22 to adapt to the dimensional deviation of the heat sink 2.

[0045] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated device for applying thermal paste and attaching heat sinks, comprising a thermal paste application mechanism and a heat sink attachment mechanism, wherein the heat sink attachment mechanism includes a vibratory feeder for conveying heat sinks, characterized in that, Also includes: A lifting mechanism is used to lift the heat sink at the end of the vibratory feeder; A reverse conveying mechanism operates when the lifting mechanism lifts the end heat sink, thereby forcing the heat sink adjacent to the end heat sink away from the lifting mechanism.

2. The integrated device for applying thermal paste and attaching heat sinks according to claim 1, characterized in that, A stop is constructed at the outlet of the vibratory feeder.

3. The integrated device for applying thermal paste and attaching heat sinks according to claim 2, characterized in that, The lifting mechanism includes a cylinder and a lifting platform fixed to the top of the cylinder. A lifting plate is constructed on the lifting platform, and an adaptation groove adapted to the lifting plate is constructed on the vibratory plate.

4. The integrated device for applying thermal paste and attaching heat sinks according to claim 3, characterized in that, The bottom of the lifting plate is equipped with a baffle, which is located in the adapter groove. When the lifting platform rises, the baffle prevents the heat sink from approaching the stop block.

5. The integrated device for applying thermal paste and attaching heat sinks according to claim 4, characterized in that, The reverse conveying mechanism includes a rotating groove constructed on a vibratory plate, in which a friction roller is rotatably connected.

6. The integrated device for applying thermal paste and attaching heat sinks according to claim 5, characterized in that, The vibratory feeder is equipped with two friction rollers, which rotate synchronously and in the same direction.

7. The integrated device for applying thermal paste and attaching heat sinks according to claim 4, characterized in that, It also includes a transmission assembly that drives the friction roller to rotate based on the lifting stroke of the lifting platform. When the lifting platform rises, the friction roller forces the heat sink adjacent to the end heat sink away from the top plate. When the lifting platform falls, the friction roller forces the heat sink into the stop block.

8. The integrated device for applying thermal paste and attaching heat sinks according to claim 7, characterized in that, The transmission assembly includes a friction wheel fixed coaxially with the friction roller and a friction strip fixed on the lifting platform.

9. The integrated device for applying thermal paste and attaching heat sinks according to claim 8, characterized in that, As the lifting platform rises, the friction strip drives the friction wheel and friction roller to rotate, thereby forcing the heat sink adjacent to the end heat sink away from the lifting plate.

10. The integrated device for applying thermal paste and attaching heat sinks according to claim 8, characterized in that, As the lifting platform descends, the friction strip drives the friction wheel and friction roller to rotate, thereby forcing the heat sink to approach the stop block.

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