An apparatus for assembling a PCBA heat sink

Abstract

The utility model relates to the field of assembling PCBA, and disclose a kind of device for assembling PCBA fin, including two strip clamping rods and the pulling assembly connected to two strip clamping rods, pulling assembly is used to move two strip clamping rods to the side of each other close, two the strip clamping rod is slidably provided with two clamping rods, two the clamping rod is used to clamp fin group, and spring in automatic centering pulling assembly provides uniform elastic tension of elastic clamping, so that two strip clamping rods are automatically attached to the both sides of PCB after releasing, without manual repeated calibration, ensure the symmetry and stability of the clamping position of PCB, avoid the positioning deviation caused by manual operation.

Description

Technical Field

[0001] This utility model relates to the field of PCBA assembly, specifically a device for assembling PCBA heat sinks. Background Technology

[0002] In the field of electronic circuits, the heat dissipation performance of PCBA (Printed Circuit Board Assembly) directly affects the stability and lifespan of electronic components. Therefore, the installation quality of heat sinks is crucial. Currently, heat sinks are usually glued to designated locations on the PCB board. During installation, precise positioning and temporary fixation of the heat sink are required to ensure that it does not shift or tilt while the adhesive is curing. Traditional fixing methods often rely on manual support or simple clamps, which have the following technical drawbacks: Insufficient positioning accuracy: Manual operation is easily affected by subjective factors, making it difficult to ensure the precise alignment of the heat sink with the PCB board, resulting in a decrease in heat dissipation effect; Poor stability: Simple clamps usually use rigid clamping, which cannot adapt to PCB boards and heat sinks of different sizes, and lack elastic cushioning, which may cause the heat sink to shift due to external impact. Low ease of adjustment: The clamping position adjustment of existing devices is mostly achieved by bolt tightening, which requires repeated disassembly and assembly, making the operation cumbersome and affecting production efficiency; Insufficient versatility: Fixtures designed for specific sizes are difficult to adapt to diverse PCBA products, increasing equipment costs and management difficulties for enterprises. To address this, we propose a device for assembling PCBA heat sinks. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a device for assembling PCBA heat sinks, thus solving the aforementioned problems.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a device for assembling PCBA heat sinks, comprising two strip clamping rods and a pulling assembly connecting the two strip clamping rods, the pulling assembly being used to move the two strip clamping rods toward each other, and two clamping rods being slidably disposed on the two strip clamping rods, the two clamping rods being used to clamp the heat sink fin assembly.

[0005] Preferably, the pulling assembly includes two rectangular rods and a connecting rod. The two rectangular rods are fixedly connected to the two strip clamping rods on their respective sides, and the two ends of the connecting rod are respectively inserted into the interior of the rectangular rods.

[0006] Preferably, a tension spring is fixedly installed inside the rectangular rod, and the end of the tension spring is fixedly connected to one end of the plug rod.

[0007] Preferably, two sliders are slidably disposed on the bar-shaped clamping rod, and the clamping rod is slidably disposed on the sliders.

[0008] Preferably, the strip clamping rod has a T-shaped groove, and the slider has a T-shaped protrusion integrally formed at the position corresponding to the T-shaped groove, and the T-shaped protrusion and the T-shaped groove are slidably engaged together.

[0009] Preferably, the top of the slider is provided with a T-shaped groove, and the bottom of the clamping rod is integrally formed with a T-shaped protrusion corresponding to the position of the T-shaped groove. The T-shaped protrusion is slidably engaged with the clamping rod.

[0010] Preferably, two rectangular fixing blocks are fixedly installed on the side of each of the strip clamping rods, and a lead screw is rotatably installed between the two rectangular fixing blocks. The two ends of the lead screw are respectively provided with external threads in different directions. The slider extends to one side of the side of the strip clamping rod and is integrally formed with an mounting block. The mounting block is provided with a threaded hole. The two ends of the lead screw are respectively threadedly connected to the two mounting blocks. One end of the lead screw passes through the rectangular fixing block on one side, and a knob is fixedly installed on one end of the lead screw.

[0011] Compared with the prior art, the present invention provides a device for assembling PCBA heat sinks, which has the following advantages: I. Rapid and accurate positioning improves installation precision. The tension springs in the elastic clamping and automatic centering pull assembly provide uniform elastic tension, so that the two bar clamping rods automatically fit tightly against both sides of the PCB board after release, eliminating the need for repeated manual calibration, ensuring the symmetry and stability of the PCB board clamping position, and avoiding positioning deviations caused by manual operation. The lead screw synchronous transmission adjustment screw features reverse thread design at both ends. By rotating the knob, the two sliders can be driven to move synchronously in opposite directions or in opposite directions. This drives the clamping rod to precisely position both sides of the heat sink fins, achieving millimeter-level precision adjustment. This solves the asynchronous problem of traditional bolt adjustment and ensures strict alignment between the heat sink fins and the PCB board. II. Adaptive clamping enhances versatility and stability. Multi-dimensional adjustable clamping structure Lateral sliding: The slider slides laterally on the strip clamping rod through the T-slot / T-protrusion to adapt to different PCB board widths; Longitudinal sliding: The clamping rod slides longitudinally on the slider through T-slot 2 / T-protrusion 2, adapting to heat dissipation fins of different heights and thicknesses. One set of equipment can cover a variety of PCBA products, reducing the equipment procurement costs for enterprises. The combination of elastic buffer and rigid support, along with the elastic clamping force of the tension spring, can not only fit tightly against the edge of the PCB board, but also avoid deformation of the board caused by rigid clamping; the rigid structure of the clamping rod provides stable lateral support for the heat sink fins, preventing displacement caused by external vibration or collision during the adhesive curing process, and significantly improving the fixation reliability. III. Convenient and efficient operation, optimizing production processes One-click quick clamping simply requires pulling the bar clamping rods to both sides and engaging them with the edge of the PCB board. The automatic pull-back function of the tension spring completes the PCB board fixation without the need for additional fasteners. When adjusting the clamping rods, rotating the knob simultaneously adjusts the positions of both sides, eliminating the multi-part disassembly and assembly steps of traditional clamps and reducing single-station operation time by more than 60%. The modular structure design allows for easy disassembly and maintenance of components (such as bar clamping rods, sliders, and clamping rods) through standardized T-slots / protrusions. It also enables quick replacement of worn parts, meeting the high-frequency usage requirements of assembly line operations. IV. Compact and reliable structure, reducing operating costs The simplified transmission mechanism pull assembly adopts a minimalist design of "rectangular rod + plug rod + tension spring" to replace the traditional complex hydraulic or pneumatic clamping system, reducing failure points; the screw drive structure has high precision and long service life, requires no additional power source, and reduces equipment maintenance costs. Its universal applicability makes it suitable for small-batch precision assembly in laboratory environments, as well as for integration into automated production lines. By adjusting the knob or adding a servo motor, the clamping position can be programmed to meet the needs of different production scales. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A magnified view of part A in the diagram; Figure 3 This is a side view of the present invention; Figure 4 for Figure 3 A magnified view of section B in the diagram; Figure 5 This is a top view of the present invention; Figure 6 for Figure 5 CC section diagram.

[0013] In the diagram: 1. Strip clamping rod; 2. Rectangular fixing block; 3. Lead screw; 4. Rectangular rod; 5. Connecting rod; 6. T-slot one; 7. T-protrusion one; 8. Slider; 9. Mounting block; 10. T-slot two; 11. Clamping rod; 12. T-protrusion two; 13. Tension spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0015] Please see Figure 1-6 An assembly device for PCBA heat sinks includes two strip clamping rods 1 and a pulling assembly connecting the two strip clamping rods 1. The pulling assembly is used to move the two strip clamping rods 1 toward each other. Two clamping rods 11 are slidably disposed on the two strip clamping rods 1. The two clamping rods 11 are used to clamp the heat sink fin assembly. When installation is required, the two strip clamping rods 1 on both sides are pulled so that the two strip clamping rods 1 clamp the side of the PCB board toward each other. Then, according to the installation position, the position of the two clamping rods 11 is adjusted to align the heat sink fins with the adhesive position and the heat sink fins are glued. Then, the two clamping rods 11 are used to clamp the two sides of the heat sink fins to fix the heat sink fins. After the glue is completely bonded, the device is disassembled.

[0016] Furthermore, the pulling assembly includes two rectangular rods 4 and a connecting rod 5. The two rectangular rods 4 are fixedly connected to the two strip clamping rods 1 on their respective sides close to each other, and the two ends of the connecting rod 5 are respectively inserted into the interior of the rectangular rods 4.

[0017] Furthermore, a tension spring 13 is fixedly installed inside the rectangular rod 4. The end of the tension spring 13 is fixedly connected to one end of the plug rod 5. When in use, the strip clamping rod 1 is pulled to the opposite side, and then the tension spring 13 is stretched, clamping the two strip clamping rods 1 onto the two sides of the PCB respectively. Then the tension spring 13 is pulled back, and then the strip clamping rod 1 is clamped onto the side of the PCB.

[0018] Furthermore, two sliders 8 are slidably disposed on the bar-shaped clamping rod 1, and clamping rods 11 are slidably disposed on the sliders 8.

[0019] Furthermore, a T-shaped groove 6 is provided on the bar clamping rod 1, and a T-shaped protrusion 7 is integrally formed on the slider 8 corresponding to the position of the T-shaped groove 6. The T-shaped protrusion 7 is slidably engaged with the T-shaped groove 6.

[0020] Furthermore, a T-shaped groove 10 is provided on the top of the slider 8, and a T-shaped protrusion 12 is integrally formed on the bottom of the clamping rod 11 at the position corresponding to the T-shaped groove 10. The T-shaped protrusion 12 is slidably engaged with the clamping rod 11.

[0021] Furthermore, two rectangular fixing blocks 2 are fixedly installed on the side of each strip clamping rod 1. A lead screw 3 is rotatably installed between the two rectangular fixing blocks 2. The two ends of the lead screw 3 are respectively provided with external threads in different directions. The slider 8 extends to one side of the strip clamping rod 1 and is integrally formed with a mounting block 9. The mounting block 9 is provided with a threaded hole. The two ends of the lead screw 3 are respectively threadedly connected to the two mounting blocks 9. One end of the lead screw 3 passes through one of the rectangular fixing blocks 2. A knob is fixedly installed on one end of the lead screw 3. Rotating the knob causes the lead screw 3 to rotate. During the rotation, the two sliders 8 move toward each other or away from each other, thus driving the two clamping rods 11 to move.

[0022] Working principle: Pull the strip clamping rod 1 to the opposite side, then the tension spring 13 is stretched, and the two strip clamping rods 1 are respectively clamped to the two sides of the PCB. Then the tension spring 13 is pulled back, and the strip clamping rod 1 is clamped to the side of the PCB. Then, according to the installation position, align the heat sink fins with the adhesive position and glue the heat sink fins. Rotate the knob to drive the lead screw 3 to rotate. During the rotation, the two sliders 8 move to the opposite side, thus driving the two clamping rods 11 to move. Adjust the position of the two clamping rods 11, and then use the two clamping rods 11 to clamp the two sides of the heat sink fins to fix the heat sink fins. After the glue is completely glued, disassemble the device.

[0023] Structural Description: Strip clamping rod 1 Function: As the main support structure of the device, it is used to clamp the two sides of the PCB board and provide a mounting reference.

[0024] Structural features: The surface is provided with a T-shaped groove 6 for sliding connection with the slider 8, so as to realize the position adjustment of the clamping rod 11; Both sides are connected to the pulling component via rectangular rods 4, and can move towards or away from each other under the action of the pulling component; A rectangular fixing block 2 is fixedly installed on the side to support the rotation of the lead screw 3.

[0025] Rectangular fixing block 2 Function: Fix both ends of the lead screw 3 to provide rotational support points for the lead screw 3.

[0026] Structural features: Two of each bar clamping rod 1 are provided on the side, appearing in pairs; The internal shaft hole is rotatably connected to both ends of the lead screw 3 to ensure that the lead screw 3 rotates stably without deviating.

[0027] Screw 3 Function: The position of the clamping rod 11 is adjusted by rotating the slider 8 to move it.

[0028] Structural features: Both ends are machined with external threads in opposite directions, which are threaded to the mounting blocks 9 of the two sliders 8 respectively; One end passes through the rectangular fixing block 2 and extends to the outside, and the end is fixed with a knob for easy manual rotation; During rotation, the two sliders 8 move synchronously toward each other or toward each other using the principle of screw drive.

[0029] Rectangular rod 4 Function: As a connecting part of the pulling assembly, it transmits tension and houses the tension spring 13.

[0030] Structural features: Both ends are fixedly connected to two strip clamping rods 1 respectively, located on the side of the strip clamping rods 1 that are close to each other; The interior is hollow, used to install the tension spring 13 and the plug rod 5 to form an elastic connection structure.

[0031] Connector 5 Function: Connects two rectangular rods 4, restricts the movement direction of the strip clamping rod 1, and provides a fixing point for the tension spring 13.

[0032] Structural features: The two ends are respectively inserted into the interiors of two rectangular rods 4, and slide with the rectangular rods 4; The end is fixedly connected to the tension spring 13, and the elastic force of the tension spring 13 realizes the automatic pull-back and fixation of the bar clamping rod 1.

[0033] T-slot 16 Function: It cooperates with the T-shaped protrusion 7 of the slider 8 to realize the sliding guidance of the slider 8 on the bar clamping rod 1.

[0034] Structural features: It is formed on the upper surface of the strip clamping rod 1, and has a T-shaped cross section; The depth and width of the groove match the T-shaped protrusion 7 to ensure that the slider 8 slides smoothly and does not fall off.

[0035] T-shaped protrusion - 7 Function: It works with the T-slot 6 to allow the slider 8 to slide laterally along the bar clamping rod 1.

[0036] Structural features: It is integrally formed on the bottom of slider 8, with a T-shaped cross section, and inserted into T-groove 6; The position of slider 8 on bar clamp 1 is adjusted by sliding contact.

[0037] Slider 8 Function: As the mounting carrier for the clamping rod 11, it is driven to move by the lead screw 3 to adjust the clamping position.

[0038] Structural features: The bottom is slidably connected to the T-shaped groove of the strip clamping rod 1 via a T-shaped protrusion 7; A mounting block 9 extends from the side, and a threaded hole is provided on the mounting block 9 to engage with the external thread of the lead screw 3. A T-shaped groove 10 is provided at the top for installing the clamping rod 11.

[0039] Installing Block 9 Function: Connects slider 8 to lead screw 3 to transmit the rotational power of lead screw 3.

[0040] Structural features: It is integrally formed on the side of the slider 8 and extends to the outside of the strip clamping rod 1; The internal threaded hole precisely matches the external thread of the lead screw 3, ensuring the stability of the threaded transmission.

[0041] T-groove II 10 Function: It cooperates with the T-shaped protrusion 12 of the clamping rod 11 to realize the sliding guidance of the clamping rod 11 on the slider 8.

[0042] Structural features: It is located at the top of slider 8 and has a T-shaped cross-section; The clamping rod 11 is allowed to slide in a direction perpendicular to the strip clamping rod 1 to accommodate heat dissipation fins of different widths.

[0043] Clamping rod 11 Function: Directly clamps both sides of the heat sink fins to fix their position and ensure that they do not shift during the adhesive curing process.

[0044] Structural features: The bottom is slidably connected to the T-shaped groove 10 of the slider 8 via the T-shaped protrusion 212, and the height can be adjusted up and down; The end is designed as a clamping surface that fits into the heat sink fins, providing a stable clamping force.

[0045] T-shaped protrusion 212 Function: It cooperates with the T-slot 10 to allow the clamping rod 11 to slide vertically along the slider 8.

[0046] Structural features: It is integrally formed at the bottom of the clamping rod 11, with a T-shaped cross section, and is inserted into the T-shaped groove 10; The clamping rod 11 can be adjusted in the vertical direction by sliding to accommodate heat dissipation fins of different thicknesses.

[0047] Tension spring 13 Function: Provides elastic tension, causing the two strip clamping rods 1 to move automatically toward each other to clamp the PCB board.

[0048] Structural features: Installed inside the rectangular rod 4, one end is fixed to the inner wall of the rectangular rod 4, and the other end is fixedly connected to the plug rod 5; When the bar clamp 1 is pulled outward, the tension spring 13 stretches and stores elastic potential energy. When released, the bar clamp 1 is pulled back to make it fit tightly against the side of the PCB board.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for assembling PCBA heat sinks, characterized in that, It includes two strip clamping rods (1) and a pulling assembly connecting the two strip clamping rods (1). The pulling assembly is used to move the two strip clamping rods (1) toward each other. Two clamping rods (11) are slidably arranged on the two strip clamping rods (1). The two clamping rods (11) are used to clamp the heat dissipation fin assembly.

2. The apparatus for assembling PCBA heat sinks according to claim 1, characterized in that: The pulling assembly includes two rectangular rods (4) and a plug-in rod (5). The two rectangular rods (4) are fixedly connected to the two strip clamping rods (1) on their respective sides. The two ends of the plug-in rod (5) are respectively inserted into the interior of the rectangular rods (4).

3. The apparatus for assembling PCBA heat sinks according to claim 2, characterized in that: A tension spring (13) is fixedly installed inside the rectangular rod (4), and the end of the tension spring (13) is fixedly connected to one end of the plug rod (5).

4. The apparatus for assembling PCBA heat sinks according to claim 1, characterized in that: Two sliders (8) are slidably arranged on the bar-shaped clamping rod (1), and a clamping rod (11) is slidably arranged on the slider (8).

5. The apparatus for assembling PCBA heat sinks according to claim 4, characterized in that: The bar clamping rod (1) has a T-shaped groove (6) and the slider (8) has a T-shaped protrusion (7) integrally formed at the position corresponding to the T-shaped groove (6). The T-shaped protrusion (7) and the T-shaped groove (6) are slidably engaged together.

6. The apparatus for assembling PCBA heat sinks according to claim 4, characterized in that: The top of the slider (8) is provided with a T-shaped groove (10), and the bottom of the clamping rod (11) is integrally formed with a T-shaped protrusion (12) corresponding to the position of the T-shaped groove (10). The T-shaped protrusion (12) is slidably engaged with the clamping rod (11).

7. The apparatus for assembling PCBA heat sinks according to claim 4, characterized in that: Two rectangular fixing blocks (2) are fixedly installed on the side of each of the strip clamping rods (1). A lead screw (3) is rotatably installed between the two rectangular fixing blocks (2). The two ends of the lead screw (3) are respectively provided with external threads in different directions. The slider (8) extends to one side of the side of the strip clamping rod (1) and is integrally formed with an installation block (9). The installation block (9) is provided with a threaded hole. The two ends of the lead screw (3) are respectively threaded together with the two installation blocks (9). One end of the lead screw (3) passes through the rectangular fixing block (2) on one side. A knob is fixedly installed on one end of the lead screw (3).

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