Synchronous pressing jig for heat dissipation fins with elastic buffering and deformation prevention

Abstract

The utility model relates to the technical field of heat dissipation fin processing discloses a kind of elastic buffering deformation-preventing heat dissipation fin synchronous pressing fixture, including workbench, the top four corner of the workbench is fixedly connected with rack, the top of the rack is provided with pressing mechanism, and the pressing mechanism is used to press heat dissipation fin and circuit board, the top of the workbench is provided with synchronous mechanism, and the synchronous mechanism is used to provide synchronous displacement support, and the pressing mechanism includes fixed seat, the outside of the fixed seat is arranged in the top inside of rack, and the inside of the fixed seat is fixedly connected with pressing hydraulic rod. In the utility model, when heat dissipation fin and circuit board are pressed, pressing hydraulic rod telescopic drives pressure sensor and pressing seat to move down, spring is pressed and deformed, pressure sensor monitors pressure, accurately controls pressure, stably presses heat dissipation fin, avoids damaging heat dissipation fin and circuit board, effectively ensures the safety of processing process and the qualified rate of product.

Description

Technical Field

[0001] This utility model relates to the field of heat sink processing technology, and in particular to a heat sink synchronous pressing fixture with elastic buffer and anti-deformation properties. Background Technology

[0002] The synchronous pressing fixture for heat sinks is a precision tooling used for assembling electronic components. By applying pressure at multiple points simultaneously, it precisely and evenly presses the heat sinks with the heat-generating components of the chip and circuit board, ensuring a tight fit to improve heat dissipation efficiency, ensuring consistent pressing force, and avoiding component damage. It is used in the semiconductor and electronic manufacturing process.

[0003] Due to the flatness error between the heat sink and the substrate, rigid pressing can cause local overpressure and poor connection, leading to deformation and component damage. The elastic buffer design absorbs the error through the buffer component, allowing the pressing force to be transmitted evenly, ensuring a tight fit, avoiding deformation caused by hard contact, and improving product yield and heat dissipation reliability.

[0004] When installing heat sinks, manually placing them onto the circuit board can result in loose fits and misalignment, affecting the connection quality and heat dissipation. Current technology uses automated pressing devices to achieve precise fit and alignment between the heat sink and circuit board, ensuring connection quality and improving processing efficiency. However, in actual use, excessive pressure during pressing can damage both the heat sink and circuit board, leading to product scrap and failing to effectively ensure process safety and product yield. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a synchronous pressing fixture for heat sinks with elastic buffer and anti-deformation, which aims to improve the problem in the prior art that when the pressure is too high during the pressing of heat sinks and circuit boards, the heat sinks and circuit boards will be damaged, resulting in product scrap and failing to effectively ensure the safety of the processing process and the product qualification rate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heat sink synchronous pressing fixture with elastic buffer and anti-deformation, including a worktable, a frame fixedly connected to the four corners of the top of the worktable, a pressing mechanism provided on the top of the frame, the pressing mechanism being used to press the heat sink and the circuit board, and a synchronization mechanism provided on the top of the worktable, the synchronization mechanism being used to provide synchronous displacement support. The pressing mechanism includes a fixed base, the outer side of which is disposed on the inner side of the top of the frame. A pressing hydraulic rod is fixedly connected to the inner side of the fixed base. A pressure sensor is fixedly connected to the bottom of the pressing hydraulic rod. A pressing base is fixedly connected to the bottom of the pressure sensor. Springs are fixedly connected between adjacent parts of the pressing hydraulic rod and the pressing base. Two clamps are fixedly connected to the bottom of the pressing base. Drive components are provided on the left and right sides of the top of the fixed base. A displacement component is provided on the top of the frame.

[0007] As a further description of the above technical solution: The synchronization mechanism includes multiple rotating seats, the bottoms of which are fixedly connected to the four corners of the top of the workbench. Each of the multiple rotating seats is rotatably connected to a conveyor belt. The top front and rear sides of the workbench are fixedly connected to a bracket. A support base is provided on the inner side of the bracket. Slide bars are fixedly connected to the top front and rear sides of the bracket. Sliding components are provided on the front and rear sides of the support base. Power components are provided on the left and right sides of the support base. A positioning component is provided on the top front side of the bracket.

[0008] As a further description of the above technical solution: The synchronization mechanism also includes multiple rubber strips, the bottoms of which are fixedly connected to the top of the bracket, and the multiple rubber strips are arranged at equal intervals.

[0009] As a further description of the above technical solution: The displacement assembly includes two slide rods, the left and right ends of which are respectively fixedly connected to the left and right ends of the top inner side of the frame, and two sleeves are fixedly connected to the inner side of the fixed base.

[0010] As a further description of the above technical solution: The drive assembly includes two drive hydraulic rods, the outer walls of which are respectively fixedly connected to the top left and right sides of the frame, and drive seats are fixedly connected to the top left and right sides of the fixed base.

[0011] As a further description of the above technical solution: The sliding assembly includes two guide rails, with the opposite sides of the two guide rails fixedly connected to the front and rear sides of the top of the frame, respectively. The front and rear sides of the support base are each rotatably connected to two pulleys.

[0012] As a further description of the above technical solution: The positioning component includes multiple positioning blocks, which are fixedly connected to each other on the outside of the conveyor belt. A camera is fixedly connected to the top front side of the bracket.

[0013] As a further description of the above technical solution: The power assembly includes two hydraulic rods, which are fixedly connected to each other on the left and right sides of the support base, respectively. The bracket has mounting openings on both the left and right sides.

[0014] This utility model has the following beneficial effects: 1. In this utility model, when the heat sink and the circuit board are pressed together, the pressing hydraulic rod extends and retracts, causing the pressure sensor and the pressing seat to move downward. The spring is compressed and deformed, and the pressure sensor monitors the pressure. When the fixture contacts the heat sink, the spring force and the thrust work together to accurately control the pressure, stabilize the pressing of the heat sink, ensure the pressing processing quality, avoid damage to the heat sink and the circuit board, and effectively ensure the safety of the processing and the product qualification rate.

[0015] 2. In this utility model, the conveyor belt rotates to move the circuit board, the rubber strip increases friction to prevent slippage, the pulley rolls on the guide rail to make the support seat move smoothly, the power hydraulic rod extends and retracts into the mounting groove to push the support seat and the bracket to move together, the camera recognizes the positioning block to adjust the speed of the conveyor belt, and the slide bar restricts the material deviation, thus realizing stable conveying of the circuit board, smooth sliding of the support seat and linkage with the bracket, accurate positioning of the material and enhanced guidance, ensuring that the circuit board and the pressing component are relatively stationary, and ensuring synchronous support for pressing. Attached Figure Description

[0016] Figure 1 This is a perspective view of a synchronous pressing fixture for heat sinks with elastic buffer and anti-deformation properties proposed in this utility model. Figure 2 This is a front view of a synchronous pressing fixture for heat sinks with elastic buffer and anti-deformation properties proposed in this utility model. Figure 3 This is a split view of the conveyor belt in a synchronous pressing fixture for heat sinks that provides elastic buffer and prevents deformation, as proposed in this utility model. Figure 4 This is an exploded view of the pressing mechanism in a synchronous pressing fixture for an elastically buffered and deformation-resistant heat sink, as proposed in this utility model. Figure 5 This is an exploded view of the synchronization mechanism in a synchronous pressing fixture for an elastic buffer and anti-deformation heat sink proposed in this utility model.

[0017] Legend: 1. Workbench; 2. Frame; 3. Pressing mechanism; 31. Fixed seat; 32. Pressing hydraulic rod; 33. Pressure sensor; 34. Spring; 35. Pressing seat; 36. Clamp; 37. Displacement assembly; 371. Slide rod; 372. Sleeve; 38. Drive assembly; 381. Drive hydraulic rod; 382. Drive seat; 4. Synchronization mechanism; 41. Rotary seat; 42. Conveyor belt; 43. Bracket; 44. Support seat; 45. Slide bar; 46. Rubber strip; 47. Sliding assembly; 471. Guide rail; 472. Pulley; 48. Positioning assembly; 481. Locking block; 482. Camera; 49. Power assembly; 491. Power hydraulic rod; 492. Mounting slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model is provided: a heat sink synchronous pressing fixture with elastic buffer and anti-deformation, including a workbench 1, a frame 2 fixedly connected to the four corners of the top of the workbench 1, a pressing mechanism 3 provided on the top of the frame 2, the pressing mechanism 3 is used to press the heat sink and the circuit board, and a synchronous mechanism 4 provided on the top of the workbench 1, the synchronous mechanism 4 is used to provide synchronous displacement support. The pressing mechanism 3 includes a fixed base 31. The outer side of the fixed base 31 is located on the inner side of the top of the frame 2. A pressing hydraulic rod 32 is fixedly connected to the inner side of the fixed base 31. A pressure sensor 33 is fixedly connected to the bottom of the pressing hydraulic rod 32. A pressing seat 35 is fixedly connected to the bottom of the pressure sensor 33. A spring 34 is fixedly connected between adjacent pressing hydraulic rods 32 and pressing seats 35. Two clamps 36 are fixedly connected to the bottom of the pressing seat 35. A drive assembly 38 is provided on the left and right sides of the top of the fixed base 31. The drive assembly 38 includes two drive hydraulic rods 381. The outer walls of the two drive hydraulic rods 381 are fixedly connected to the left and right sides of the top of the frame 2, respectively. A drive seat 382 is fixedly connected to the left and right sides of the top of the fixed base 31. A displacement assembly 37 is provided on the top of the frame 2. The displacement assembly 37 includes two slide rods 371. The left and right ends of the two slide rods 371 are fixedly connected to the left and right ends of the inner side of the top of the frame 2, respectively. Two sleeves 372 are fixedly connected to the inner side of the fixed base 31. Specifically, when the pressing mechanism 3 is working, the two driving hydraulic rods 381 of the driving assembly 38 extend and retract, pushing the driving seats 382 on the left and right sides of the top of the fixed seat 31 to move. The two sleeves 372 on the inner side of the fixed seat 31 slide along the two slide rods 371 of the displacement assembly 37. Through the cooperation of the driving hydraulic rods 381 and the slide rods 371, the horizontal displacement adjustment of the fixed seat 31 is realized. After the fixed seat 31 moves to the designated position, the inner pressing hydraulic rod 32 extends and retracts, causing the pressure sensor 33 and pressing seat 35 at the bottom to move down. The spring 34 between the pressing hydraulic rod 32 and the pressing seat 35 is pressed down and deformed accordingly. Through the cooperation of the pressing hydraulic rod 32 and the spring 34, the pressing seat 35 is buffered and pressed down. The pressure sensor 33 monitors the pressure value in real time during the pressing process. When the two clamps 36 at the bottom of the pressing seat 35 contact the heat sink, the elastic force of the spring 34 and the thrust of the pressing hydraulic rod 32 work together to make the clamps 36 tightly clamp the heat sink and apply pressure. Through the cooperation of the pressure sensor 33 and the clamps 36, the pressure is accurately controlled and the heat sink is stably pressed. Throughout the pressing process, the cooperation between the slide rod 371 and the sleeve 372 ensures the smooth displacement of the fixed seat 31, the coordination between the driving hydraulic rod 381 and the driving seat 382 ensures precise position adjustment, and the deformation buffer of the spring 34 prevents sudden pressure changes from damaging the heat sink and circuit board. The horizontal position is adjusted by the cooperation of the driving hydraulic rod 381 and the slide rod 371, the pressure is buffered by the cooperation of the pressing hydraulic rod 32 and the spring 34, and the pressure is controlled and the pressing is stabilized by the cooperation of the pressure sensor 33 and the clamp 36, thus completing the pressing process of the heat sink.

[0020] Reference Figure 1 , Figure 3 and Figure 5The synchronization mechanism 4 includes multiple rotating seats 41, the bottoms of which are fixedly connected to the four corners of the top of the workbench 1. Conveyor belts 42 are rotatably connected to adjacent rotating seats 41. Supports 43 are fixedly connected to the front and rear sides of the top of the workbench 1. Support seats 44 are provided inside the supports 43. Sliding strips 45 are fixedly connected to the front and rear sides of the top of the supports 43. The synchronization mechanism 4 also includes multiple rubber strips 46, the bottoms of which are fixedly connected to the top of the supports 43. The rubber strips 46 are arranged at equal intervals. Sliding components 47 are provided on the front and rear sides of the support seats 44. Each sliding component 47 includes two guide rails 471. The two pulleys 472 are rotatably connected to the front and rear sides of the top of the frame 2 respectively. The support base 44 is provided with power components 49 on both the left and right sides. The power components 49 include two power hydraulic rods 491. The two power hydraulic rods 491 are fixedly connected to the left and right sides of the support base 44 respectively. The bracket 43 is provided with mounting slots 492 on both the left and right sides. The top front side of the bracket 43 is provided with a positioning component 48. The positioning component 48 includes multiple locking blocks 481. The multiple locking blocks 481 are fixedly connected to the outside of the conveyor belt 42. The top front side of the bracket 43 is fixedly connected with a camera 482. Specifically, when the synchronization mechanism 4 is working, the conveyor belt 42 between multiple adjacent rotating seats 41 rotates, driving the circuit board placed above to move. Multiple rubber strips 46 on the top of the support 43 come into contact with the material, increasing friction to prevent the circuit board from sliding. The circuit board is conveyed through the cooperation of the conveyor belt 42 and the rubber strips 46. The sliding components 47 on the front and rear sides of the support base 44 start to operate, and the two pulleys 472 roll on the guide rail 471, driving the support base 44 to move along the guide rail 471. Through the cooperation of the pulleys 472 and the guide rail 471, the support base 44 can slide smoothly. The two power hydraulic rods 491 of the power assembly 49 extend and retract, and their ends are embedded in the mounting grooves 492 on the left and right sides of the bracket 43, pushing the support seat 44 to move. Through the cooperation of the power hydraulic rods 491 and the mounting grooves 492, the bracket 43 and the support seat 44 are linked. When the support seat 44 moves, the top drive hydraulic rod 381 moves synchronously, so that the circuit board and the pressing hydraulic rod 32 are relatively stationary in the horizontal position. The camera 482 of the positioning component 48 identifies multiple positioning blocks 481 on the outside of the conveyor belt 42. The positioning blocks 481 limit the material, and the camera 482 feeds back the position information to adjust the running speed of the conveyor belt 42. Through the cooperation of the positioning blocks 481 and the camera 482, the precise positioning of the material is achieved. The sliding strips 45 on the front and rear sides of the top of the bracket 43 contact the edge of the material, further limiting the material's deviation and ensuring that the material maintains a stable posture during the conveying process. The cooperation between the sliding strips 45 and the bracket 43 enhances the guiding nature of the material conveying.

[0021] Working principle: The circuit board is placed on the conveyor belt 42 of the synchronization mechanism 4. The conveyor belt 42 between multiple rotating seats 41 starts to rotate, driving the circuit board to move on the top of the worktable 1. Multiple rubber strips 46 on the top of the bracket 43 contact the bottom of the circuit board, using the friction of the rubber to prevent the circuit board from sliding during the conveying process. At the same time, the sliding strips 45 on the front and rear sides of the top of the bracket 43 contact the edge of the circuit board, further limiting the offset of the circuit board and ensuring that it maintains a stable posture during the conveying process. The sliding components 47 on the front and rear sides of the support base 44 start to operate. The two pulleys 472 roll on the guide rail 471, driving the support base 44 to move smoothly along the guide rail 471. The two power hydraulic rods 491 of the power component 49 extend and retract, and their ends are embedded in the mounting grooves 492 on the left and right sides of the bracket 43, pushing the bracket 43 to move synchronously with the support base 44, realizing the linkage between the bracket 43 and the support base 44. The camera 482 of the positioning component 48 identifies multiple locking blocks 481 on the outside of the conveyor belt 42. The locking blocks 481 limit the circuit board. The camera 482 adjusts the running speed of the conveyor belt 42 according to the position information to realize the positioning of the circuit board. When the drive assembly 38 of the pressing mechanism 3 starts to work, the two drive hydraulic rods 381 extend and retract, pushing the drive seats 382 on the left and right sides of the top of the fixed seat 31 to move. The two sleeves 372 on the inner side of the fixed seat 31 slide along the two slide rods 371 of the displacement assembly 37. Through the cooperation of the drive hydraulic rods 381 and the slide rods 371, the horizontal displacement adjustment of the fixed seat 31 is realized, so that the position of the pressing mechanism 3 corresponds to the position of the circuit board on the synchronization mechanism 4. After the fixed base 31 moves to the designated position, the inner pressing hydraulic rod 32 extends and retracts, causing the pressure sensor 33 at the bottom and the pressing base 35 to move downwards. The spring 34 between the pressing hydraulic rod 32 and the pressing base 35 is pressed down and deformed accordingly. Through the cooperation of the pressing hydraulic rod 32 and the spring 34, the pressing base 35 is buffered downward, avoiding sudden pressure changes that could damage the heat sink and circuit board. The pressure sensor 33 monitors the pressure value in real time during the pressing process. When the two clamps 36 at the bottom of the pressing base 35 contact the heat sink, the elastic force of the spring 34 and the thrust of the pressing hydraulic rod 32 work together to make the clamps 36 tightly clamp the heat sink and apply appropriate pressure, accurately pressing the heat sink onto the circuit board.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A synchronous pressing fixture for heat sinks with elastic buffer and anti-deformation properties, comprising a worktable (1), characterized in that: A frame (2) is fixedly connected to the four corners of the top of the workbench (1). A pressing mechanism (3) is provided on the top of the frame (2). The pressing mechanism (3) is used to press the heat sink and the circuit board. A synchronization mechanism (4) is provided on the top of the workbench (1). The synchronization mechanism (4) is used to provide synchronous displacement support. The pressing mechanism (3) includes a fixed base (31), the outer side of which is located on the top inner side of the frame (2). A pressing hydraulic rod (32) is fixedly connected to the inner side of the fixed base (31). A pressure sensor (33) is fixedly connected to the bottom of the pressing hydraulic rod (32). A pressing seat (35) is fixedly connected to the bottom of the pressure sensor (33). A spring (34) is fixedly connected between adjacent parts of the pressing hydraulic rod (32) and the pressing seat (35). Two clamps (36) are fixedly connected to the bottom of the pressing seat (35). A drive assembly (38) is provided on the top left and right sides of the fixed base (31). A displacement assembly (37) is provided on the top of the frame (2).

2. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 1, characterized in that: The synchronization mechanism (4) includes multiple rotating seats (41), the bottoms of which are fixedly connected to the four corners of the top of the workbench (1). A conveyor belt (42) is rotatably connected between adjacent rotating seats (41). A bracket (43) is fixedly connected to the front and rear sides of the top of the workbench (1). A support seat (44) is provided on the inner side of the bracket (43). A slide bar (45) is fixedly connected to the front and rear sides of the top of the bracket (43). A sliding component (47) is provided on the front and rear sides of the support seat (44). A power component (49) is provided on the left and right sides of the support seat (44). A positioning component (48) is provided on the front top of the bracket (43).

3. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 2, characterized in that: The synchronization mechanism (4) also includes multiple rubber strips (46), the bottom of which is fixedly connected to the top of the bracket (43), and the multiple rubber strips (46) are arranged at equal intervals.

4. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 1, characterized in that: The displacement assembly (37) includes two slide rods (371), the left and right ends of the two slide rods (371) are respectively fixedly connected to the left and right ends of the top inner side of the frame (2), and two sleeves (372) are fixedly connected to the inner side of the fixed seat (31).

5. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 1, characterized in that: The drive assembly (38) includes two drive hydraulic rods (381), the outer walls of which are fixedly connected to the top left and right sides of the frame (2), and drive seats (382) are fixedly connected to the top left and right sides of the fixed seat (31).

6. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 2, characterized in that: The sliding assembly (47) includes two guide rails (471), with the opposite sides of the two guide rails (471) fixedly connected to the front and rear sides of the top of the frame (2), and the front and rear sides of the support base (44) are rotatably connected to two pulleys (472).

7. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 2, characterized in that: The positioning component (48) includes multiple positioning blocks (481), and the multiple positioning blocks (481) are fixedly connected to each other on the outside of the conveyor belt (42). A camera (482) is fixedly connected to the top front side of the bracket (43).

8. The elastic buffer anti-deformation heat sink synchronous pressing fixture according to claim 2, characterized in that: The power assembly (49) includes two power hydraulic rods (491), which are fixedly connected to the left and right sides of the support base (44) respectively. The bracket (43) has mounting slots (492) on both the left and right sides.

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