Graphite positioning equipment for welding copper-based heat dissipation plate

Abstract

The invention discloses graphite positioning equipment for welding a copper-based heat dissipation plate, which comprises a rack, two bearing seats are symmetrically mounted on the rack, a rotary mounting table is rotatably connected to the two bearing seats jointly, a positioning supporting seat is mounted on the side wall of the rack, a ball screw is horizontally mounted on the positioning supporting seat, and the ball screw is rotatably connected to the rotary mounting table. One end of the ball screw penetrates through the positioning supporting seat and is provided with a rotating handle, a ball nut is connected to the ball screw in a matched mode, and a rotating frame is rotationally connected to the ball nut; a protective box is fixedly connected to the rotary mounting table, a rotary driving mechanism is mounted in the protective box, the output end of the rotary driving mechanism penetrates through the protective box and is provided with a workbench, and a positioning clamp is mounted on the workbench. The welding device has the advantages that the stability and accuracy of the heat dissipation plate in the welding process are guaranteed, the stability of the welding quality is improved, and welding defects such as air holes, slag inclusion and weld joint position deviation are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of copper-based heat sink welding, and in particular to a graphite positioning device for copper-based heat sink welding. Background Art

[0002] In the field of electronic equipment heat dissipation technology, copper-based heat sinks are widely used due to their excellent thermal conductivity. As electronic products continue to develop towards high performance and miniaturization, the requirements for the welding quality of copper-based heat sinks are increasing.

[0003] Traditional copper-based heat sink welding operations often face many problems. In terms of positioning, most use simple fixing fixtures, which lack flexibility and cannot adapt to heat sinks of different sizes and shapes. For heat sinks of different sizes, the fixing fixtures either cannot be effectively fixed, resulting in easy displacement of the heat sink during welding, affecting welding accuracy, and causing defects such as deviation and pores in the weld; or different specifications of fixtures need to be replaced, increasing production costs and production time.

[0004] In terms of angle adjustment, traditional equipment usually cannot adjust the heat sink at multiple angles. When welding heat sinks of complex shapes or welding on different surfaces, workers have to work in uncomfortable postures or even need to readjust the position of the entire equipment, which seriously affects welding efficiency and quality. For example, when welding a copper-based heat sink with inclined heat sink fins, the inability to adjust the angle will cause the welding tool to not weld at the optimal angle, increasing the difficulty of welding.

[0005] Therefore, we propose a graphite positioning device for copper-based heat sink welding to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose a graphite positioning device for welding a copper-based heat sink.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A graphite positioning device for copper-based heat sink welding, comprising a frame, two bearing seats symmetrically mounted on the frame, a rotating mounting table rotatably connected to the two bearing seats, a positioning support seat mounted on the side wall of the frame, a ball screw mounted horizontally on the positioning support seat, one end of the ball screw passes through the positioning support seat and is mounted with a rotating handle, a ball nut is matched and connected to the ball screw, a rotating frame is rotatably connected to the ball nut, and the rotating frame is mounted on the input shaft of the rotating mounting table;

[0009] The rotating mounting table is fixedly connected with a protection box, a rotation driving mechanism is installed in the protection box, an output end of the rotation driving mechanism passes through the protection box and is installed with a workbench, and a positioning fixture is installed on the workbench.

[0010] In the above-mentioned graphite positioning equipment for copper-based heat sink welding, the rotating drive mechanism includes a driving motor, which is fixedly installed in a protective box, and a small gear is installed on the output shaft of the driving motor. A support shaft is installed on the inner bottom wall of the protective box, and a workbench is installed on the upper end of the support shaft. A large gear is installed on the support shaft, and the large gear is meshed with the small gear.

[0011] In the above-mentioned graphite positioning equipment for copper-based heat sink welding, a welding table is installed on the workbench by fastening bolts, two limit slide grooves are symmetrically opened on the upper and lower end surfaces of the workbench, and each positioning fixture is slidably connected in the two limit slide grooves corresponding to the position.

[0012] In the above-mentioned graphite positioning equipment for copper-based heat sink welding, the positioning fixture includes a sliding frame, the sliding frame includes a vertical mounting plate, and the vertical mounting plate is symmetrically installed with two horizontal movable plates on the end surface close to the workbench, each of the horizontal movable plates is fixedly connected to a limiting slider, and each limiting slider is slidably connected in a limiting sliding groove corresponding to the position.

[0013] In the above-mentioned graphite positioning device for copper-based heat sink welding, locking studs are installed on the vertical mounting plate, and the end faces of the locking studs abut against the side walls of the workbench.

[0014] In the above-mentioned graphite positioning equipment for copper-based heat sink plate welding, the upper end of the vertical mounting plate is fixedly connected to a fixed bracket, the lower end face of the fixed bracket is fixedly connected to a pushing cylinder, the piston rod of the pushing cylinder passes through the fixed bracket and is fixedly connected to a pushing support, the pushing support is rotatably connected to an angle bracket, the upper end face of the fixed bracket is fixedly connected to a fixed support, the fixed support is rotatably connected to a movable support rod, and the end of the movable support rod away from the fixed support is rotatably connected to the middle part of the angle bracket, and a clamping assembly is installed on the angle bracket.

[0015] In the above-mentioned graphite positioning device for copper-based heat sink welding, the clamping assembly includes a positioning frame, and the positioning frame is installed on the end surface of the angle frame close to the workbench, and an L-shaped clamping frame is rotatably connected to the positioning frame.

[0016] In the above-mentioned graphite positioning device for copper-based heat sink welding, the clamping assembly includes a positioning frame, and the positioning frame is installed on the end surface of the angle frame close to the workbench, and an L-shaped clamping frame is rotatably connected to the positioning frame.

[0017] In the above-mentioned graphite positioning device for copper-based heat sink welding, a controller is installed on the side wall of the frame, and the driving motor, the pushing cylinder and the electric slide rail are all electrically connected to the controller.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The rotating function of the rotating mounting table and the workbench can accurately adjust the angle of the heat sink, so that the welding part can be at the best welding angle, and the welding angle deviation can be controlled within a very small range, ensuring the quality of the weld. Especially for the welding of heat sinks with complex shapes and structures, it can effectively improve the welding accuracy.

[0020] 2. The position adjustment of the positioning fixture can realize the precise positioning of the specific welding area of ​​the heat sink. For the welding area with high precision requirements, it can ensure that the welding tool acts accurately on the area, meeting the fine welding tasks with high requirements for welding position accuracy.

[0021] 3. The positioning fixture can adjust the spacing and can adapt to copper-based heat sinks of different sizes. Whether it is a small or large heat sink, it can be accurately installed and positioned by adjusting the positioning fixture, which improves the versatility of the equipment for products of various sizes.

[0022] 4. The clamping assembly can adjust the clamping position on the electric slide rail according to the shape of the heat sink, and the push cylinder can adjust the thrust to adapt to heat sinks of different thicknesses. Whether it is a thin sheet, block or heat sink with a complex curve shape, it can be effectively clamped and positioned.

[0023] In summary, the present invention ensures the stability and precision of the heat sink during the welding process, improves the stability of welding quality, and reduces welding defects such as pores, slag inclusions, weld position deviations, and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a graphite positioning device for copper-based heat sink welding proposed by the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of a structure in which the protective box is removed;

[0026] Figure 3 for Figure 2 The schematic diagram of the structure in which the rack and controller are removed;

[0027] Figure 4 This is a structural schematic diagram of a workbench and a positioning fixture in a graphite positioning device for welding a copper-based heat sink proposed by the present invention;

[0028] Figure 5This is a structural schematic diagram of a workbench and a welding table in a graphite positioning device for welding a copper-based heat sink proposed by the present invention;

[0029] Figure 6 The present invention provides a schematic structural diagram of a positioning fixture in a graphite positioning device for welding a copper-based heat sink.

[0030] In the figure: 1 frame, 2 positioning support seat, 3 rotating handle, 4 ball screw, 5 rotating frame, 6 bearing seat, 7 protection box, 8 rotating mounting table, 9 workbench, 10 welding table, 11 pushing cylinder, 12 angle bracket, 13 controller, 14 ball nut, 15 driving motor, 16 small gear, 17 large gear, 18 supporting shaft, 19 L-type clamping frame, 20 fixed bracket, 21 limiting slide groove, 22 positioning frame, 23 fixed support, 24 movable support rod, 25 sliding frame, 26 limiting slider, 27 pushing support, 28 fastening bolt, 29 locking stud. DETAILED DESCRIPTION

[0031] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0032] Example

[0033] Reference Figure 1-6 , a graphite positioning device for copper-based heat sink welding, including a frame 1, characterized in that: two bearing seats 6 are symmetrically installed on the frame 1, and a rotating mounting table 8 is rotatably connected to the two bearing seats 6, a positioning support seat 2 is installed on the side wall of the frame 1, a ball screw 4 is horizontally installed on the positioning support seat 2, one end of the ball screw 4 passes through the positioning support seat 2 and is installed with a rotating handle 3, a ball nut 14 is matched and connected to the ball screw 4, a rotating frame 5 is rotatably connected to the ball nut 14, and the rotating frame 5 is installed on the input shaft of the rotating mounting table 8;

[0034] A protective box 7 is fixedly connected to the rotating mounting table 8, and a rotating driving mechanism is installed in the protective box 7. The output end of the rotating driving mechanism passes through the protective box 7 and is installed with a workbench 9. The rotating driving mechanism includes a driving motor 15, and the driving motor 15 is fixedly installed in the protective box 7. A pinion 16 is installed on the output shaft of the driving motor 15. A supporting shaft 18 is installed on the inner bottom wall of the protective box 7, and the workbench 9 is installed on the upper end of the supporting shaft 18. A large gear 17 is installed on the supporting shaft 18, and the large gear 17 is meshed with the small gear 16.

[0035] The welding table 10 is mounted on the workbench 9 by means of fastening bolts 28 . Two limiting slide grooves 21 are symmetrically provided on both upper and lower end surfaces of the workbench 9 , and each positioning fixture is slidably connected in the two limiting slide grooves 21 at corresponding positions.

[0036] A positioning fixture is installed on the workbench 9, and the positioning fixture includes a sliding frame 25. The sliding frame 25 includes a vertical mounting plate, and a locking stud 29 is installed on the vertical mounting plate, and the end face of the locking stud 29 is against the side wall of the workbench 9. Two horizontal movable plates are symmetrically installed near the end face of the workbench 9. A limiting slider 26 is fixedly connected to each horizontal movable plate, and each limiting slider 26 is slidably connected in a limiting slide groove 21 at a corresponding position.

[0037] The upper end of the vertical mounting plate is fixedly connected with a fixed bracket 20, and the lower end surface of the fixed bracket 20 is fixedly connected with a pushing cylinder 11, and the piston rod of the pushing cylinder 11 passes through the fixed bracket 20 and is fixedly connected with a pushing support 27, and the pushing support 27 is rotatably connected with an angle bracket 12, and the upper end surface of the fixed bracket 20 is fixedly connected with a fixed support 23, and a movable support rod 24 is rotatably connected to the fixed support 23, and the end of the movable support rod 24 away from the fixed support 23 is rotatably connected to the middle part of the angle bracket 12, and a clamping assembly is installed on the angle bracket 12, and the clamping assembly includes a positioning frame 22, and the positioning frame 22 is installed on the end surface of the angle bracket 12 close to the workbench 9, and the positioning frame 22 is rotatably connected with an L-shaped clamping frame 19, and the clamping assembly includes a positioning frame 22, and the positioning frame 22 is installed on the end surface of the angle bracket 12 close to the workbench 9, and the positioning frame 22 is rotatably connected with an L-shaped clamping frame 1 9. The L-shaped clamping frame 19 is made of graphite. During the welding process of the copper-based heat sink, a large amount of heat will be generated in the welding area. Graphite has excellent high temperature resistance. The L-shaped clamping frame 19 made of graphite can ensure that the clamping frame will not be deformed or softened due to heat in the high temperature environment of welding. The graphite L-shaped clamping frame 19 always maintains its original shape and performance, stably clamps the heat sink, and ensures the smooth progress of the welding work. At the same time, the thermal conductivity of graphite is high and can quickly conduct heat away. When the heat generated by welding is transferred to the L-shaped clamping frame 19, it can effectively disperse the heat to avoid local overheating. This not only helps to protect the structural integrity of the clamping frame itself, but also prevents the heat sink from being damaged due to local overheating. An electric slide rail is provided on the end face of the angle frame 12 close to the workbench 9, and the positioning frame 22 is slidably connected to the electric slide rail.

[0038] A controller 13 is installed on the side wall of the frame 1 , and the driving motor 15 , the pushing cylinder 11 and the electric slide rail are all electrically connected to the controller 13 .

[0039] Rotation control of the rotating mounting table 8: Turn the rotating handle 3, the rotating handle 3 drives the ball screw 4 to rotate. Since the ball screw 4 cooperates with the ball nut 14, the ball nut 14 moves on the ball screw 4, and the movement of the ball nut 14 drives the rotating frame 5 connected to it to move, and the rotating frame 5 then drives the rotating mounting table 8 to rotate under the support of the bearing seat 6. In this way, the angle of the protective box 7 and its internal components can be adjusted; the rotation control of the rotating mounting table 8 enables the copper-based heat sink placed on the workbench 9 to be adjusted to different angles. In some complex welding processes, it may be necessary to continuously weld different surfaces of the heat sink, and there are strict requirements on the welding sequence and angle. The rotation control of the rotating mounting table 8 can accurately meet these requirements. For example, when stacking and welding multiple layers of copper-based heat sinks, it is necessary to first weld part of the area of ​​one layer, and then rotate a certain angle to weld the corresponding area of ​​another layer to ensure the uniformity of welding and the reliability of connection. By rotating the rotating mounting table 8, this complex welding process can be completed in an orderly manner. At the same time, the rotation function can enable the equipment to better adapt to copper-based heat sinks of different sizes and shapes within a limited space. For heat sinks of different shapes, such as round, square or irregular shapes, by rotating the rotating mounting table 8, the direction of the heat sink can be better adjusted, so that the positioning fixture can more effectively position and clamp it, thereby improving the versatility of the equipment for different products.

[0040] Rotation drive of the workbench 9: the drive motor 15 in the protective box 7 is started, and the output shaft of the drive motor 15 drives the small gear 16 to rotate, and the small gear 16 is engaged with the large gear 17. The large gear 17 is installed on the support shaft 18, and the workbench 9 is installed on the upper end of the support shaft 18, thereby driving the workbench 9 to rotate. Through this transmission method, the rotation angle of the workbench 9 can be accurately controlled to achieve adjustment of the angle of the copper-based heat sink placed thereon, thereby ensuring the accuracy and quality of welding and effectively reducing welding defects.

[0041] Adjustment of the position of the positioning fixture: A welding table 10 is installed on the workbench 9 by fastening bolts 28. The limiting slide groove 21 on the workbench 9 is used for the sliding positioning of the positioning fixture. The sliding frame 25 of the positioning fixture slides in the limiting slide groove 21 through the limiting slider 26 on its horizontal moving plate, so that the position of the positioning fixture can be adjusted according to the size of the copper-based heat sink. After adjustment, the sliding frame 25 can be fixed to the workbench 9 by the locking studs 29 on the vertical mounting plate; through the sliding of the sliding frame 25 in the limiting slide groove 21 and the fixing of the locking studs 29, the spacing between the positioning fixtures can be conveniently changed, so that the equipment can flexibly cope with size differences, thereby adapting to heat sinks of different sizes, thereby improving the versatility of the equipment.

[0042] Clamping action: the push cylinder 11 on the lower end surface of the fixed bracket 20 is started, and the piston rod of the push cylinder 11 pushes the push support 27, and the push support 27 drives the angle frame 12 to move. The angle frame 12 realizes angle change through the rotation connection between the movable support rod 24 and the fixed support 23. The clamping assembly on the angle frame 12 starts to work, and the positioning frame 22 slides to a suitable position on the electric slide rail on the angle frame 12 (the electric slide rail can be controlled by the controller 13), and then the L-shaped clamping frame 19 rotatably connected to the positioning frame 22 clamps the copper-based heat sink to achieve a stable positioning of the copper-based heat sink, which is convenient for subsequent welding operations; the positioning frame 22 in the clamping assembly can slide on the electric slide rail of the angle frame 12, and the clamping position can be adjusted according to the specific shape of the heat sink. At the same time, the thrust of the push cylinder 11 can be appropriately adjusted according to the thickness of the heat sink. For thinner heat sinks, a smaller thrust can be used to avoid damage to them; for thicker heat sinks, the thrust can be increased to ensure the clamping effect. In this way, no matter the heat sink is in the form of a thin sheet, a block with a certain thickness, or a complex curved shape, it can be effectively clamped, thereby enhancing the adaptability of the equipment to different types of heat sinks.

[0043] During the whole process, the controller 13 is used to control the operation of the drive motor 15, the push cylinder 11 and the electric slide rail to ensure that the movements of each part are coordinated and accurate.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A graphite positioning device for copper-based heat sink welding, comprising a frame (1), characterized in that: Two bearing seats (6) are symmetrically mounted on the frame (1), and a rotating mounting table (8) is rotatably connected to the two bearing seats (6). A positioning support seat (2) is mounted on the side wall of the frame (1), and a ball screw (4) is horizontally mounted on the positioning support seat (2). One end of the ball screw (4) passes through the positioning support seat (2) and is mounted with a rotating handle (3). A ball nut (14) is matched and connected to the ball screw (4), and a rotating frame (5) is rotatably connected to the ball nut (14), and the rotating frame (5) is mounted on the input shaft of the rotating mounting table (8); The rotating mounting table (8) is fixedly connected to a protection box (7), a rotating drive mechanism is installed in the protection box (7), an output end of the rotating drive mechanism passes through the protection box (7) and is installed with a workbench (9), and a positioning fixture is installed on the workbench (9).

2. The graphite positioning device for copper-based heat sink welding according to claim 1, characterized in that: The rotary drive mechanism comprises a drive motor (15), the drive motor (15) is fixedly mounted in a protective box (7), a pinion gear (16) is mounted on the output shaft of the drive motor (15), a support shaft (18) is mounted on the inner bottom wall of the protective box (7), and the workbench (9) is mounted on the upper end of the support shaft (18), a large gear (17) is mounted on the support shaft (18), and the large gear (17) is meshed with the small gear (16).

3. The graphite positioning device for copper-based heat sink welding according to claim 2, characterized in that: A welding table (10) is mounted on the workbench (9) by means of fastening bolts (28); two limiting slide grooves (21) are symmetrically provided on the upper and lower end surfaces of the workbench (9), and each positioning fixture is slidably connected in the two limiting slide grooves (21) at corresponding positions.

4. The graphite positioning device for copper-based heat sink welding according to claim 3, characterized in that: The positioning fixture comprises a sliding frame (25), and the sliding frame (25) comprises a vertical mounting plate, and two horizontal movable plates are symmetrically mounted on the end surface of the vertical mounting plate close to the workbench (9), and each of the horizontal movable plates is fixedly connected to a limiting slider (26), and each limiting slider (26) is slidably connected in a limiting sliding groove (21) at a corresponding position.

5. The graphite positioning device for copper-based heat sink welding according to claim 4, characterized in that: A locking stud (29) is installed on the vertical mounting plate, and the end surface of the locking stud (29) abuts against the side wall of the workbench (9).

6. A graphite positioning device for copper-based heat sink welding according to claim 4, characterized in that: The upper end of the vertical mounting plate is fixedly connected to a fixed bracket (20), the lower end surface of the fixed bracket (20) is fixedly connected to a pushing cylinder (11), the piston rod of the pushing cylinder (11) passes through the fixed bracket (20) and is fixedly connected to a pushing support (27), the pushing support (27) is rotatably connected to an angle bracket (12), the upper end surface of the fixed bracket (20) is fixedly connected to a fixed support (23), the fixed support (23) is rotatably connected to a movable support rod (24), and one end of the movable support rod (24) away from the fixed support (23) is rotatably connected to the middle part of the angle bracket (12), and a clamping assembly is installed on the angle bracket (12).

7. A graphite positioning device for copper-based heat sink welding according to claim 6, characterized in that: The clamping assembly comprises a positioning frame (22), and the positioning frame (22) is installed on the end surface of the angle frame (12) close to the workbench (9), and an L-shaped clamping frame (19) is rotatably connected to the positioning frame (22).

8. The graphite positioning device for copper-based heat sink welding according to claim 7, characterized in that: The end surface of the angle frame (12) close to the workbench (9) is provided with an electric slide rail, and the positioning frame (22) is slidably connected to the electric slide rail.

9. A graphite positioning device for copper-based heat sink welding according to claim 8, characterized in that: A controller (13) is installed on the side wall of the frame (1), and the driving motor (15), the pushing cylinder (11) and the electric slide rail are all electrically connected to the controller (13).

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