A soldering lug riveting device and method

Abstract

The application discloses a kind of welding sheet riveting device and method, including upper die body, lower die body, the upper die body includes fixed plate A and limiting plate A, the limiting plate A is set in the top of fixed plate A, the lower die body includes limiting plate B and fixed plate B, the fixed plate B is set in the top of limiting plate B, the upper die body is connected with lower die body by guide column.This application keeps the double-wing-shaped welding sheet in the vertical state by the positioning plate, then extrudes the upper die body and the lower die body, and drives the double-wing-shaped welding sheet through the fixed column A, so as to rivet and fasten the double-wing-shaped welding sheet to the backing plate.Using the riveting device of the application, not only can the perpendicularity of the double-wing-shaped welding sheet and the backing plate be maintained, but also multiple double-wing-shaped welding sheets can be riveted to the backing plate at the same time, improving the production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of riveting device technology, and particularly relates to a welding sheet riveting device and method. Background Technology

[0002] Busbars, also known as laminated busbars, are multi-layered laminated power module electrical connection components that can connect multiple circuits for power distribution. They feature repeatable electrical performance, low inductance, anti-interference, high reliability, space saving, and simple and quick assembly. As power conversion device components, busbars are widely used in aerospace power systems, communication base stations, military, transportation systems, energy, and other fields. One component of a busbar is the pad with riveted double-wing-shaped weld tabs. When riveting the double-wing-shaped weld tabs onto the pad, the pad must be free of defects such as delamination or damage after riveting. Currently, commonly used riveting fixtures consist of a clamping plate and a tapered upsetting head and a flat-bottomed upsetting head. During riveting, the double-wing-shaped weld tab is placed on the clamping plate, then the pad is placed on the weld tab, ensuring the weld tab's riveting point passes through the riveting hole in the pad. The tapered upsetting head is then used to open the weld tab's riveting point, and finally, the flat-bottomed upsetting head is used to flatten the bottom of the weld tab, securing it firmly to the pad.

[0003] However, when using common tooling to rivet double-wing weld pieces, the following problems generally occur: 1. When the double-wing weld piece is clamped onto the clamping plate, the contact surface between the weld piece and the clamping plate is concave, while the top surface of the clamping plate is flat. Therefore, the weld piece is prone to cracking during riveting. 2. During the riveting process of double-wing weld pieces, when using a tapered upsetting head to expand the weld piece at the riveting joint, the upsetting head must be perpendicular to the riveting hole of the weld piece to ensure uniform force around the hole opening. If it is not perpendicular, uneven local force will squeeze the hole opening, causing cracking. Similarly, when using a flat-bottomed upsetting head to flatten the weld piece, it must also be perpendicular to the riveting hole of the weld piece to ensure uniform force at the bottom of the backing plate at the riveting joint. Otherwise, the bottom of the backing plate is prone to delamination. However, the perpendicularity of the upsetting head to the riveting hole is not easy to control manually. Therefore, weld piece cracking will affect the product qualification rate, causing waste and affecting efficiency. 3. Using common tooling for riveting is a manual operation, and only one weld piece can be riveted at a time, which is inefficient.

[0004] Application No. 2013202795269 discloses a riveting device for electronic heat sinks, including a base on which a working platform for supporting the electronic heat sink substrate is mounted. Press-in punches for guiding electronic heat sink solder pads onto the electronic heat sink substrate are slidably mounted on both sides of the working platform. A return spring is provided between the two press-in punches. Above the working platform are two riveting punches for fixing two electronic heat sink solder pads to the electronic heat sink substrate, respectively. Both riveting punches are fixedly mounted on an upper template, which has a driving component for driving the press-in punches. However, the technical problem this device aims to solve is avoiding damage to the electronic heat sink substrate during movement. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a welding sheet riveting device, which can solve the problems of low precision and efficiency in manual operation.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a welding sheet riveting device, comprising an upper mold body and a lower mold body. The upper mold body includes a fixed plate A and a limiting plate A, with the limiting plate A disposed on top of the fixed plate A. The lower mold body includes a limiting plate B and a fixed plate B, with the fixed plate B disposed on top of the limiting plate B. The upper mold body and the lower mold body are connected by guide posts.

[0008] Preferably, the fixing plate A is provided with a fixing post A and a through hole A, one end of the fixing post A is connected to the fixing plate A, and the other end of the fixing post A is a free end.

[0009] Preferably, the limiting plate B has a groove, and an elastic body is disposed in the groove.

[0010] Preferably, a fixing post B is provided on the fixing plate B, one end of the fixing post B is connected to the fixing plate B, and the other end of the fixing post B is a free end.

[0011] Preferably, one end of the guide post is connected to the fixed plate B, and the other end of the guide post extends into the fixed plate A through the through hole A to form a sliding connection.

[0012] Preferably, the fixing plate B is provided with a positioning plate, and the positioning plate is provided with a through hole B.

[0013] Preferably, the fixing column B is a solid cylindrical shape.

[0014] The riveting method of the welding piece riveting device includes the following steps: placing the pad plate on top of the fixed post B and below the positioning plate, then placing the double-wing-shaped welding piece on the through hole B, so that the fixed post A is aligned with the double-wing-shaped welding piece, and using tools or equipment such as a bench vise or a pressure bed to squeeze the upper mold body and the lower mold body under pressure, the fixed post A moves towards the fixed post B, thereby driving the double-wing-shaped welding piece to move, thereby riveting and fastening the double-wing-shaped welding piece to the pad plate.

[0015] The beneficial effects of this invention are as follows: This invention holds the double-wing-shaped welding piece in a vertical position using a positioning plate, then presses it against the upper and lower mold bodies. The fixing post A aligns with the double-wing-shaped welding piece, thereby riveting and fastening the double-wing-shaped welding piece to the pad. Using this riveting device, not only can the perpendicularity of the double-wing-shaped welding piece to the pad be maintained, but multiple double-wing-shaped welding pieces can also be riveted to the pad simultaneously, improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure after the double-wing-shaped welding sheet and the backing plate are riveted together; In the diagram: 1-Fixed plate A, 101-Through hole A, 2-Limiting plate A, 3-Limiting plate B, 301-Groove, 4-Fixed plate B, 5-Guide post, 6-Fixed post A, 7-Elastic body, 8-Fixed post B, 9-Positioning plate, 901-Through hole B, 10-Cross countersunk screw, 11-Hex socket head cap screw, 12-Double wing weld plate, 13-Backing plate. Detailed Implementation

[0017] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0018] Example 1: like Figure 1 , 2 As shown, a welding sheet riveting device includes an upper mold body and a lower mold body. The upper mold body includes a fixing plate A1 and a limiting plate A2. The limiting plate A2 is disposed on top of the fixing plate A1. The limiting plate A2 is connected to the fixing plate A1 by a cross-slot countersunk screw 10. The lower mold body includes a limiting plate B3 and a fixing plate B4. The fixing plate B4 is disposed on top of the limiting plate B3. The fixing plate B4 is connected to the limiting plate B3 by an internal hexagon socket head cap screw 11. The upper mold body and the lower mold body are connected by guide posts 5, and two guide posts 5 are provided. The limiting plate A2 fixes and limits the fixing post A6. The guide posts 5 allow the fixing post A6 to be inserted into the fixing post B8 and compress the double-wing-shaped welding sheet 12, so that the double-wing-shaped welding sheet 12 is riveted onto the pad plate 13.

[0019] The fixing plate A1 is provided with a fixing post A6 and a through hole A101. One end of the fixing post A6 is connected to the fixing plate A1, and the other end of the fixing post A6 is a free end.

[0020] The limiting plate B3 has a groove 301, and an elastic body 7 is disposed in the groove 301. The elastic body 7 is a polyurethane rod, used to ensure that the double-wing weld piece 12 is subjected to uniform force during the riveting process.

[0021] A fixing post B8 is provided on the fixing plate B4. One end of the fixing post B8 is connected to the fixing plate B4, and the other end of the fixing post B8 is a free end.

[0022] One end of the guide post 5 is connected to the fixed plate B4, and the other end of the guide post 5 extends into the fixed plate A1 through the through hole A101 to form a sliding connection.

[0023] The fixing plate B4 is provided with a positioning plate 9, which has a through hole B901. The positioning plate 9 is used to fix the pad 13 and to determine the setting direction of the double-wing welding sheet 12.

[0024] The fixing post B8 is a solid cylinder, which allows the free end of the fixing post A6 to contact and bear force with the fixing post B8 after passing through the through hole B901, facilitating the riveting and fastening of the double-winged welding piece 12 to the pad 13. This device can rivet the QJ570-81 double-winged welding piece, which includes a taper. The pad 13 is made of epoxy laminated glass cloth.

[0025] Multiple fixing posts A6 and B8 can be provided to simultaneously rivet multiple double-wing-shaped welding pieces 12 onto the pad 13. The number of through holes B901 corresponds to the number of fixing posts B8.

[0026] The riveting method of the welding piece riveting device includes the following steps: placing the pad 13 on the fixed post B8 and below the positioning plate 9, then placing the double-wing welding piece 12 on the through hole B901, so that the fixed post A6 is aligned with the double-wing welding piece 12, and using tools or equipment such as bench vises or pressure beds to make the upper mold body and the lower mold body squeeze and bear force, the fixed post A6 moves towards the fixed post B8, thereby driving the double-wing welding piece 12 to move, thereby riveting and fastening the double-wing welding piece 12 to the pad 13.

Claims

1. A welding sheet riveting device, characterized in that: The upper mold body includes an upper mold body and a lower mold body. The upper mold body includes a fixed plate A (1) and a limiting plate A (2). The limiting plate A (2) is located on top of the fixed plate A (1). The lower mold body includes a limiting plate B (3) and a fixed plate B (4). The fixed plate B (4) is located on top of the limiting plate B (3). The upper mold body and the lower mold body are connected by a guide post (5). The fixing plate A (1) is provided with a fixing post A (6) and a through hole A (101). One end of the fixing post A (6) is connected to the fixing plate A (1), and the other end of the fixing post A (6) is a free end. The limiting plate B (3) is provided with a groove (301), and an elastic body (7) is provided in the groove (301). A fixing post B (8) is provided on the fixing plate B (4). One end of the fixing post B (8) is connected to the fixing plate B (4), and the other end of the fixing post B (8) is a free end. The fixing plate B (4) is provided with a positioning plate (9), and the positioning plate (9) is provided with a through hole B (901). Place the pad (13) above the fixed post B (8) and below the positioning plate (9), then place the double-wing weld piece (12) on the through hole B (901), so that the fixed post A (6) is aligned with the double-wing weld piece (12). Then, use a bench vise or a pressure bed to squeeze the upper mold body and the lower mold body together. The fixed post A (6) moves towards the fixed post B (8), thereby driving the double-wing weld piece (12) to move, thus riveting and fastening the double-wing weld piece (12) to the pad (13). The fixed column B (8) is a solid cylindrical shape.

2. The welding sheet riveting device as described in claim 1, characterized in that: One end of the guide post (5) is connected to the fixing plate B (4), and the other end of the guide post (5) extends into the fixing plate A (1) through the through hole A (101) to form a sliding connection.

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