Spot welding jig structure

Abstract

The utility model relates to the field of welding jigs, in particular to a spot welding jig structure which comprises a base body for placing a terminal, a plurality of positioning columns capable of being in contact with the periphery of the terminal to position the terminal are formed on the surface of the base body, and a base opening is formed in the surface, provided with the positioning columns, of the base body in a penetrating mode. The coil is directionally moved into the opening in the side, away from the positioning column, of the seat opening so that the pin of the coil can make contact with the limiting arm of the terminal, even if the size of the coil is changed, the size of the terminal cannot be changed, meanwhile, the seat opening can be designed to be large in opening area, the seat body does not need to be replaced, various jigs do not need to be prepared, and the jig cost is reduced.

Description

Technical Field

[0001] This application relates to the field of welding fixtures, and more particularly to a spot welding fixture structure. Background Technology

[0002] An inductor is a widely used basic electronic component, mainly composed of a coil, a magnetic core, and electrodes. The quality of the coil has a significant impact on the quality of the inductor. In the manufacturing process of some integrally molded inductors, several coils need to be spot-welded to a limiting arm within the same square-shaped terminal block to allow multiple inductors to be molded at once.

[0003] For example, a fixture for spot welding inductor coils and terminals, with announcement number CN215846270U, ​​places the coil into the cavity of the fixture and sleeves it on the central post, and the limiting arm of the terminal is also located in the cavity to position and contact the coil pin. Then the cover plate is pressed down to stabilize the periphery of the terminal.

[0004] Regarding the aforementioned technologies, when the model of the inductor to be produced changes, the size of the coil will also change accordingly. This requires the fixture to be changed accordingly, and multiple fixtures need to be prepared, which makes the fixture cost relatively high. Utility Model Content

[0005] To improve the versatility of fixtures and reduce costs, this application provides a spot welding fixture structure.

[0006] The spot welding fixture structure provided in this application adopts the following technical solution.

[0007] A spot welding fixture structure includes a base for placing terminals. The surface of the base is formed with several positioning posts that can contact the periphery of the terminals to position them. The surface of the base with the positioning posts is formed with a seat opening. An opening on the side of the seat opening away from the positioning posts allows a coil to be oriented so that the coil pin contacts the limiting arm of the terminal.

[0008] By adopting the above technical solution, the coil can pass through a sufficiently large socket when the size of the coil changes to a certain extent. At the same time, changes in the size of the coil within a certain range will not cause changes in the terminal size, so there is no need to replace the socket, thereby improving the versatility of the fixture, reducing fixture costs, and lowering the cost of the coil.

[0009] Optionally, the seat body has two through-holes for the corresponding protrusions of the cover plate to be inserted to pull the seat body.

[0010] By adopting the above technical solution, the welded terminals and coils can be moved to the corresponding workstation by pulling the base to remove them and insert new terminals.

[0011] Optionally, an anti-wear ring can be detachably connected to the end opening of the end hole corresponding to the protruding insertion of the cover plate, and the inner diameter of the anti-wear ring is less than or equal to the inner diameter of the end hole.

[0012] By adopting the above technical solution, the wear caused by the end hole during the frequent insertion process of the cover plate is reduced, so that the entire seat does not need to be replaced after the fixture has been used for a long time.

[0013] Optionally, the end opening of the end hole where the anti-wear ring is located is formed with a ring channel for the anti-wear ring to be tightly inserted.

[0014] By adopting the above technical solution, when the anti-wear ring is worn out and can no longer protect the end hole, it is easier to remove the anti-wear ring and insert a new anti-wear ring.

[0015] Optionally, the anti-wear ring may be made of copper.

[0016] By adopting the above technical solution, the anti-wear ring is made of copper, which has better wear resistance and lubricity.

[0017] Optionally, the surface of the positioning post facing the terminal is arc-shaped.

[0018] By adopting the above technical solution, the terminals and positioning posts are in line contact, thereby reducing wear on the terminals.

[0019] Optionally, the positioning post has an inclined guide surface formed around its periphery at the end away from the base, and the cross-sectional area of ​​the positioning post at the end away from the base is the smallest.

[0020] By adopting the above technical solution, it is easier to place the terminal between all the positioning posts.

[0021] Optionally, the base may be made of iron.

[0022] By adopting the above technical solutions, the durability of the seat is improved.

[0023] In summary, this application includes at least the following beneficial effects.

[0024] 1. When the size of the coil changes to a certain extent, the coil can still pass through a sufficiently large socket. At the same time, changes in the size of the coil within a certain range will not cause changes in the terminal size, so there is no need to replace the socket, thereby improving the versatility of the fixture, reducing fixture costs, and lowering the cost of the coil.

[0025] 2. The original central column for supplying coils on the fixture has been eliminated. Instead, a receiving platform is used to transport individual coils to the spot welding position for spot welding. This process completes the spot welding of the entire piece in a cyclical manner, reducing the likelihood of the central column wearing out and requiring fixture replacement. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the terminals of this application placed on the base.

[0027] Explanation of reference numerals in the attached drawings: 1. Terminal; 2. Base; 3. Positioning pin; 31. Seat opening; 32. Limiting arm; 33. End hole; 34. Anti-wear ring; 35. Ring track; 36. Guide surface. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a spot welding fixture structure, referring to... Figure 1 The device includes a horizontal base 2 for placing the terminal 1 horizontally. The upper surface of the base 2 has a through opening 31. Several positioning posts 3 are fixedly connected around the through opening 31 on the upper surface of the base 2. The terminal 1 is located between all the positioning posts 3. Each positioning post 3 abuts against the vertical outer wall of the terminal 1 so that the terminal 1 is positioned. Then, the coil enters from the lower opening of the through opening 31 and moves to the predetermined position under the drive of the external receiving platform so that the coil pin and the limiting arm of the terminal 1 can smoothly abut.

[0030] Reference Figure 1 The positioning post 3 is in an arc shape on the vertical surface of the terminal 1. The end of the positioning post 3 away from the base 2 has a guide surface 36 formed around the arc surface of the positioning post 3. The height of the guide surface 36 can be 2 / 3 of the height of the positioning post 3. The guide surface 36 is inclined and the cross-sectional area of ​​the end of the positioning post 3 away from the base 2 is the smallest, so that the terminal 1 can be placed between all the positioning posts 3.

[0031] Reference Figure 1 Several end holes 33 are formed through the upper surface of one end of the seat body 2 along its length. An annular channel 35 is formed around the center line of the upper opening of each end hole 33. An anti-wear ring 34 is tightly embedded in the annular channel 35. The inner diameter of the anti-wear ring 34 is less than or equal to the inner diameter of the end hole 33, so that when the corresponding protrusion of the cover plate connecting the external cylinder power rod or robotic arm engages within the end hole 33 to move the seat body 2, the anti-wear ring 34 can reduce the wear on the end hole 33. Furthermore, the anti-wear ring 34 can be made of copper, and the seat body 2 can be made of iron, to reduce the wear on the anti-wear ring 34 and the seat body 2 during prolonged use.

[0032] The implementation principle of a spot welding fixture structure in this application embodiment is as follows: Terminal 1 is placed on the base 2, and then the cover plate protrudes and is inserted into the end hole 33, and the cover plate can abut against the periphery of terminal 1. Then the base 2 is pulled to a predetermined position, and the coil moves upward from the lower opening of the base 31 to a predetermined position through the receiving platform driven by the robotic arm or cylinder, so that the coil pin and the limiting arm 32 of terminal 1 come into contact, and then spot welding can be performed.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spot welding fixture structure, comprising a base (2) for placing terminals (1), characterized in that: The surface of the seat (2) is formed with several positioning posts (3) that can contact the periphery of the terminal (1) to position the terminal (1). The surface of the seat (2) where the positioning posts (3) are set is formed with a seat opening (31). The opening of the seat opening (31) on the side away from the positioning posts (3) allows the coil to be oriented to move in so that the coil pin contacts the limiting arm (32) of the terminal (1).

2. The spot welding fixture structure according to claim 1, characterized in that: The seat (2) has two end holes (33) through which the cover plate is inserted to pull the seat (2).

3. The spot welding fixture structure according to claim 2, characterized in that: The end hole (33) is provided with a wear-resistant ring (34) that is detachably connected to the end opening of the cover plate that is protruding into it. The inner diameter of the wear-resistant ring (34) is less than or equal to the inner diameter of the end hole (33).

4. The spot welding fixture structure according to claim 3, characterized in that: The end hole (33) is provided with an opening at one end of the anti-wear ring (34) and a ring channel (35) is formed for the anti-wear ring (34) to be tightly inserted.

5. The spot welding fixture structure according to claim 3, characterized in that: The anti-wear ring (34) is made of copper.

6. The spot welding fixture structure according to claim 1, characterized in that: The surface of the positioning post (3) facing the terminal (1) is arc-shaped.

7. The spot welding fixture structure according to claim 6, characterized in that: The positioning post (3) has an inclined guide surface (36) formed around the end away from the seat (2), and the cross-sectional area of ​​the end of the positioning post (3) away from the seat (2) is the smallest.

8. The spot welding fixture structure according to claim 1, characterized in that: The base (2) is made of iron.

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