A welding fixture for manufacturing busbar radiators

Abstract

This utility model belongs to the field of welding fixture technology, specifically a welding fixture for the production of busbar radiators. It includes a left clamping plate and a right clamping plate, which together form a rectangular frame to accommodate the substrate and the heat sink. The left and right clamping plates are respectively provided with left and right clamping strips, and each clamping plate extends to form a clamping part. Each left and right clamping strip has an extension, the end faces of which are flush with the clamping parts for clamping the heat sink. The bottom surface of the clamping part has a groove for accommodating the substrate. Locking strips are detachably connected to the bottom of the left and right clamping plates to limit the substrate's position. It also includes a clamping structure located around the left and right clamping plates to lock them in place. By aligning and clamping the substrate and heat sink of the product using the left and right clamping plates, the clamping accuracy is significantly improved, ensuring unobstructed flow in the busbar radiator, guaranteeing welding dimensions, and increasing product yield.

Description

Technical Field

[0001] This utility model belongs to the field of welding fixture technology, and specifically relates to a welding fixture for the production of busbar radiators. Background Technology

[0002] Multi-copper busbar stacking welding is a key manufacturing process in power electronic equipment. It is mainly used to combine multiple copper busbars into one unit by welding, and at the same time integrate with heat dissipation structures (such as heat sinks and water-cooled plates) to achieve the dual functions of "high current carrying capacity" and "efficient heat dissipation".

[0003] Typically, multiple layers of heat sinks are placed on a substrate and then soldered. Due to the large number of layers, there is a lack of quick and effective methods to align them during clamping. After soldering, it is difficult to guarantee unobstructed heat dissipation channels on the heat sink, and it is also difficult to ensure the solder joint dimensions, resulting in a high product defect rate. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a welding fixture for the production of busbar radiators, which aims to solve the above technical problems.

[0005] Technical solution: In order to achieve the above objectives, this utility model provides a welding fixture for the production of busbar radiators, including a left clamping plate and a right clamping plate, wherein the left clamping plate and the right clamping plate are combined to form a rectangular frame for accommodating the base plate and the heat sink plate. The left clamping plate and the right clamping plate are respectively provided with a left clamping strip and a right clamping strip. Both the left clamping plate and the right clamping plate are provided with a clamping part. Both the left clamping strip and the right clamping strip are provided with an extension part. The end faces of the extension part and the clamping part are flat and used to clamp the heat sink. The bottom surface of the clamping part is provided with a groove for accommodating the substrate. The bottom of the left clamping plate and the right clamping plate are detachably connected with locking bars, which can limit the substrate. The locking bars, the groove, and the left clamping plate (right clamping plate) together form a groove for accommodating the substrate. It also includes a clamping structure located around the left and right clamping plates, which can lock the left and right clamping plates together.

[0006] Furthermore, the left and right clamping bars are positioned with the left and right clamping plates respectively by positioning pins and are connected by bolts. Springs are fitted on the bolts to form a floating configuration for the left and right clamping bars.

[0007] Furthermore, the bottom of the right clamping bar is also provided with a groove-shaped positioning block for positioning the substrate.

[0008] Furthermore, the end face of the clamping part is provided with an alignment end plate. After the left clamping plate and the right clamping plate are closed, the alignment end plate acts on the side of each heat sink plate to align them.

[0009] Furthermore, the clamp structure includes a hinge rod, a set of connecting rods rotatably connected to both ends of the hinge rod, and a locking rod bolted to the other end of the connecting rod.

[0010] Furthermore, the hinge rod, connecting rod, and locking rod form a rectangular frame, and the left and right clamping plates are located within this rectangular frame. The left and right clamping plates can be clamped together by adjusting the connecting bolts between the connecting rod and the locking rod.

[0011] Furthermore, the locking bar is bolted to the bottom of the left and right clamping plates.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects compared with the prior art: 1. The present invention provides a welding fixture for the production of busbar radiators. It has a simple structure and reasonable design. The product's base plate and heat sink are aligned and clamped by left and right clamping plates, which significantly improves the clamping accuracy, ensures the smooth flow of the busbar radiator, guarantees the welding dimensions, and improves the product yield.

[0013] 2. In this utility model, left and right clamping bars are floatingly set on the left and right clamping plates respectively, which can limit the position of each heat sink plate, improve its clamping accuracy and efficiency. During welding, the clamping plates are pressed down to be level with the top heat sink plate, but still have a limiting effect on it, which is beneficial to control the welding size. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the welding fixture used in the production of a busbar radiator according to the present invention. Figure 2 This is a schematic diagram of the back structure of a welding fixture for the production of a busbar radiator according to the present invention (the clamp structure is omitted). Figure 3 This is a schematic diagram of the clamping of a welding fixture for the production of a busbar radiator according to the present invention. Figure 4 for Figure 3 An explosion diagram.

[0015] In the diagram: 1-Left clamping plate, 2-Right clamping plate, 3-Left clamping bar, 4-Right clamping bar, 41-Slotted positioning block, 5-Clamping part, 51-Aligning end plate, 6-Extension part, 7-Groove, 8-Locking bar, 9-Clamping structure, 91-Hinge rod, 92-Connecting rod, 93-Locking rod, 10-Base plate, 11-Heat dissipation plate. Detailed Implementation

[0016] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] like Figure 1-2 As shown: A welding fixture for the production of busbar radiators includes a left clamping plate 1 and a right clamping plate 2, wherein the left clamping plate 1 and the right clamping plate 2 are combined to form a rectangular frame for accommodating the base plate and the heat sink plate. The left clamping plate 1 and the right clamping plate 2 are respectively provided with a left clamping strip 3 and a right clamping strip 4. Both the left clamping plate 1 and the right clamping plate 2 are provided with a clamping part 5. Both the left clamping strip 3 and the right clamping strip 4 are provided with an extension part 6. The end faces of the extension part 6 and the clamping part 5 are flat and used to clamp the heat sink. The bottom surface of the clamping part 5 is provided with a groove 7 for accommodating the substrate, and the bottom of the left clamping plate 1 and the right clamping plate 2 are detachably connected with a locking bar 8, which can limit the substrate. It also includes a clamping structure 9 located around the left clamping plate 1 and the right clamping plate 2, which can lock the left clamping plate 1 and the right clamping plate 2.

[0018] The left clamping bar 3 and right clamping bar 4 are positioned to the left clamping plate 1 and right clamping plate 2 respectively by locating pins and connected by bolts. Springs are fitted onto the bolts, creating a floating configuration for the left clamping bar 3 and right clamping bar 4. Due to potential dimensional errors after the heat sinks 11 are stacked, the left clamping bar 3 (right clamping bar 4) is floating. In the normal state, the left clamping bar 3 is lifted by the spring, thus transforming the slot for accommodating the heat sinks 11. This ensures that each heat sink 11 is positioned by the side limit of the left clamping plate 3 when placed, guaranteeing the clamping accuracy of the heat sink 11. During subsequent welding, the welding mechanism moves down and presses against the left clamping bar 3, and the spring compresses the left clamping bar 3, causing it to descend. The welding mechanism can then contact the upper surface of the heat sink 11 for processing.

[0019] Specifically, the bottom of the right clamping bar 4 is also provided with a groove-shaped positioning block 41 for positioning the substrate. The groove-shaped positioning block 41 matches the rectangular protrusion on the edge of the substrate 10. When the substrate 10 is installed, the rectangular protrusion is inserted into the groove-shaped positioning block 41, further improving the clamping accuracy.

[0020] In a preferred embodiment, the end face of the clamping part 5 is provided with an alignment end plate 51.

[0021] Specifically, the clamp structure 9 includes a hinge rod 91, a set of connecting rods 92 rotatably connected to both ends of the hinge rod 91, and a locking rod 93 bolted to the other end of the connecting rod 92.

[0022] Specifically, the hinge rod 91, connecting rod 92 and locking rod 93 form a rectangular frame, and the left clamping plate 1 and right clamping plate 2 are located within the rectangular frame. The left clamping plate 1 and right clamping plate 2 can be clamped by adjusting the connecting bolt between the connecting rod 92 and the locking rod 93.

[0023] Specifically, the locking bar 8 is installed at the bottom of the left clamping plate 1 and the right clamping plate 2 by bolts.

[0024] The welding fixture for manufacturing busbar radiators provided by this utility model, when in use: ... Figure 3-4 As shown, the product's base plate 10 is first inserted into the groove 7 from the bottom. Then, the left clamping plate 1 and the right clamping plate 2 are assembled together. Then, multiple heat dissipation plates 11 are stacked from above. Then, the outermost clamping structure 9 is placed on the outer periphery of the fixture. The connecting rod 92 and the locking rod 93 are pushed together and tightened by bolts. Finally, the product is completely fixed. Finally, the entire fixture is placed on the welding equipment to weld the product to complete the product manufacturing.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A welding fixture for manufacturing busbar radiators, characterized in that, It includes a left clamping plate (1) and a right clamping plate (2), which together form a rectangular frame that accommodates a substrate and a heat sink. The left clamping plate (1) and the right clamping plate (2) are respectively provided with a left clamping strip (3) and a right clamping strip (4). Both the left clamping plate (1) and the right clamping plate (2) are provided with a clamping part (5). Both the left clamping strip (3) and the right clamping strip (4) are provided with an extension part (6). The end faces of the extension part (6) and the clamping part (5) are flush and used to clamp the heat sink. The bottom surface of the clamping part (5) is provided with a groove (7) for accommodating the substrate. The bottom of the left clamping plate (1) and the right clamping plate (2) are detachably connected with locking strips (8), which can limit the substrate. It also includes a clamping structure (9) located around the left clamping plate (1) and the right clamping plate (2), which can lock the left clamping plate (1) and the right clamping plate (2).

2. The welding fixture for manufacturing busbar radiators according to claim 1, characterized in that, The left clamp (3) and the right clamp (4) are positioned with the left clamp (1) and the right clamp (2) respectively by positioning pins and are connected by bolts. The bolts are fitted with springs to form a floating arrangement of the left clamp (3) and the right clamp (4).

3. The welding fixture for manufacturing busbar radiators according to claim 1, characterized in that, The bottom of the right clamp (4) is also provided with a groove-shaped positioning block (41) for positioning the substrate.

4. The welding fixture for manufacturing busbar radiators according to claim 1, characterized in that, The end face of the clamping part (5) is provided with an alignment end plate (51).

5. The welding fixture for manufacturing busbar radiators according to claim 1, characterized in that, The clamp structure (9) includes a hinge rod (91), a set of connecting rods (92) rotatably connected to both ends of the hinge rod (91), and a locking rod (93) bolted to the other end of the connecting rod (92).

6. The welding fixture for manufacturing busbar radiators according to claim 5, characterized in that, The hinge rod (91), connecting rod (92) and locking rod (93) form a rectangular frame. The left clamping plate (1) and right clamping plate (2) are located inside the rectangular frame. The left clamping plate (1) and right clamping plate (2) can be clamped by adjusting the connecting bolt between the connecting rod (92) and the locking rod (93).

7. The welding fixture for manufacturing busbar radiators according to claim 1, characterized in that, The locking bar (8) is bolted to the bottom of the left clamp (1) and the right clamp (2).

Images