Universal welding tool with functions of rectangular and circular electric connector wire bonding

Abstract

This solution discloses a universal welding fixture in the field of electronic component welding equipment that combines the functions of welding rectangular and circular electrical connectors. It includes a base, a support, a reciprocating mechanism, a first limiting block, and a second limiting block. The second limiting block is connected to the base, and the first limiting block is connected to the reciprocating mechanism. The reciprocating mechanism moves the first limiting block away from or towards the second limiting block. The reciprocating mechanism is connected to the base via the support. Both the first and second limiting blocks are provided with an arc-shaped limiting groove and a rectangular limiting groove. This solution solves the problem of the "single applicability" of existing fixtures. The dual-groove design is compatible with both rectangular and circular electrical connectors, reducing fixture change and debugging time. The clamping effect prevents the welding pins from slipping during welding, improving the quality of wire welding. The limiting grooves provide a wrapping fixation of the electrical connector, reducing direct contact with external forces. Furthermore, by padding the limiting grooves with soft material, the risk of cosmetic damage can be further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electronic component welding equipment, and specifically relates to a universal welding fixture that combines the functions of welding wires for rectangular and circular electrical connectors. Background Technology

[0002] Electrical connector plugs / sockets are a way to provide electrical connections in the fields of lithium-ion batteries, thermal batteries, and zinc-silver batteries. They are an important means of energy transmission and require cables to transmit electrical energy during use.

[0003] Due to different purposes, electrical connectors need to be used in various complex and harsh environments. The welding quality of the connector pins and wires is an important factor affecting energy transmission efficiency. Welding is commonly used as an assembly method in engineering.

[0004] However, when soldering wires to plug pins that are made of softer materials, have better thermal conductivity, and have smaller soldering positions, it is easy to cause damage to the appearance of the electrical connector plug / socket if specific tooling is not used; and the slippage of the soldering pins during the soldering process will affect the soldering quality of the wires.

[0005] Furthermore, in actual production, both rectangular and circular electrical connectors require soldering. Existing soldering fixtures are mostly only suitable for one type of connector. For example, the connector plug soldering fixture provided in patent application CN207853144U, while used for soldering plugs of flat cables and improving the quality of flat cable plug assembly and interface assembly with external products, and avoiding potential burn hazards during soldering, does not solve the problem of connector plug / socket appearance damage, nor does it address the issue of solder pin slippage affecting wire soldering quality. Moreover, it is only suitable for flat cable connectors. Therefore, there is an urgent need for a soldering fixture suitable for soldering both types of connectors. This would significantly reduce fixture change and debugging time, allowing operators to complete soldering operations for both types of connectors on the same fixture, thereby improving overall production progress. Utility Model Content

[0006] The present invention aims to provide a universal welding fixture that combines the functions of welding wires for rectangular and circular electrical connectors, in order to solve the problem that the existing welding fixtures have limited applicability and are not conducive to efficient production.

[0007] This solution provides a universal welding fixture that combines the functions of bonding rectangular and circular electrical connectors. It includes a base and a limiting block, as well as a support and a reciprocating mechanism. The limiting block includes a first limiting block and a second limiting block. The second limiting block is connected to the base, and the first limiting block is connected to the reciprocating mechanism. The reciprocating mechanism moves the first limiting block away from or towards the second limiting block. The reciprocating mechanism is connected to the base via the support. Both the first and second limiting blocks are provided with an arc-shaped limiting groove and a rectangular limiting groove.

[0008] The working principle of this solution is as follows: the tooling provides stable support through the base, the bracket fixes the reciprocating mechanism, and the reciprocating mechanism drives the first limiting block to move in the direction of approaching / moving away from the second limiting block. The first limiting block and the second limiting block are respectively provided with an arc-shaped limiting groove (for circular electrical connectors) and a rectangular limiting groove (for rectangular electrical connectors). When welding the corresponding type of electrical connector, it is placed into the corresponding groove of the two limiting blocks, and the reciprocating mechanism drives the first limiting block to move, so that the two grooves cooperate to clamp the electrical connector.

[0009] The beneficial technical effects of this solution are: It solves the problem of "limited applicability" of existing tooling by using a dual-slot design to be compatible with both rectangular and circular electrical connectors, reducing tooling change and debugging time; The clamping action prevents the welding pin from slipping during the welding process, thus improving the welding quality of the wires. The limiting groove's enveloping fixation of the electrical connector reduces direct contact with external forces, and the risk of cosmetic damage can be further reduced by padding the limiting groove with soft material.

[0010] Furthermore, the limiting block has a shape that is high at both ends and low in the middle. The arc-shaped limiting groove and the rectangular limiting groove are coaxial and respectively arranged at the higher ends of the limiting block. The limiting block adopts the shape of "high at both ends and low in the middle," with the arc-shaped limiting groove and the rectangular limiting groove located at the higher ends, and the low-recessed area in the middle providing space for welding operations (such as facilitating the insertion of the welding torch and the movement of the operator's hands). The coaxial design allows for a large space between the two, facilitating operation and helping to improve welding accuracy.

[0011] Furthermore, the second limiting block is horizontally rotatably connected to the base, and the first limiting block is horizontally rotatably connected to the reciprocating mechanism. Both the second limiting block and the base, and the first limiting block and the reciprocating mechanism, are horizontally rotatably connected (e.g., via bearings or shafts). Rotating the limiting blocks allows for quick switching between using arc-shaped or rectangular slots facing the operator's primary working side. This flexibility enhances the adaptability of the tooling, standardizes the welding posture of electrical connectors, eliminates the need for operators to frequently adjust their operating habits, avoids operational obstacles, and further improves production efficiency.

[0012] Furthermore, the reciprocating mechanism is preferably a reciprocating lead screw. The first limiting block is rotatably connected to the nut seat of the reciprocating lead screw via a bearing. A locking block is detachably or vertically rotatably connected to the first limiting block, and the locking block is slidably connected to the bracket. The reciprocating lead screw is preferred as the reciprocating mechanism because it has high transmission accuracy and stable clamping force. The connection between the first limiting block and the nut seat of the lead screw via a bearing ensures that the limiting block is allowed to rotate. The locking block is detachably or vertically rotatably connected to the first limiting block and slidably engaged with the bracket, which neither hinders the rotation of the limiting block nor obstructs its movement, but also guides its direction during movement, ensuring slot alignment accuracy. The bearing connection and locking block cooperation balance the rotational flexibility and movement stability of the limiting block, ensuring alignment accuracy when switching slots.

[0013] Furthermore, the second limiting block is positioned relative to the bracket or base via a pin. Once the second limiting block rotates to the target position (with the arcuate or rectangular grooves on both blocks aligned), the pin is inserted into the positioning hole of the bracket or base and the second limiting block to restrict its rotation, ensuring the stability of the limiting block's position during welding. This prevents accidental rotation of the limiting block due to vibration or external force during welding, avoiding loosening or misalignment of the electrical connector, and further reducing the risk of solder pin slippage and surface damage.

[0014] Furthermore, the arc-shaped limiting groove is parallel to the axial direction of the rectangular limiting groove. Maintaining parallelism between the arc-shaped and rectangular limiting grooves ensures that the axial direction remains consistent regardless of which groove is used to clamp the electrical connector. This standardizes the welding posture of the electrical connector, eliminating the need for operators to frequently adjust their operating habits, improving operational proficiency, and contributing to increased product standardization.

[0015] Furthermore, the reciprocating mechanism is selected from either a reciprocating lead screw or a cylinder. Both can drive the first limit block to complete the actions of "approaching and clamping" and "moving away and releasing". For high precision requirements, a reciprocating lead screw is selected, while for high efficiency and speed requirements, a cylinder is selected.

[0016] Furthermore, the first limiting block is detachably or vertically rotatably connected to a locking block, which is slidably connected to the bracket.

[0017] Furthermore, protective pads are provided on the walls of both the arc-shaped and rectangular limiting grooves. The inner walls of the arc-shaped and rectangular limiting grooves are fitted with protective pads (such as silicone, rubber, or thick cotton pads), which, when in contact with the electrical connector, avoid hard friction through flexible materials, while simultaneously increasing the tightness of the fit through elastic deformation. This also better solves the problem of "damage to the appearance of electrical connectors" in the prior art, protecting the surface from scratches and indentations.

[0018] Furthermore, the elastic deformation of the protective pad is 50%–60%, and the springback deformation is 90%–95%. The 50%–60% elastic deformation improves the tooling's adaptability to different specifications of electrical connectors (eliminating the need for frequent protective pad replacements). The high springback rate of 90%–95% extends the service life of the protective pad, ensuring stable clamping even during long-term use and continuously reducing surface damage and solder pin slippage. Attached Figure Description Figure 1 This is a schematic diagram of embodiment 1 of a universal welding fixture that combines the functions of rectangular and circular electrical connectors for wire bonding.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the second limiting block.

[0020] Figure 3 This is a diagram showing the state of the first limiting block after it has moved down in Example 1.

[0021] Figure 4 This is a schematic diagram of one of the states during the rotation and adjustment process of the limit block in Example 1.

[0022] Figure 5 This is a schematic diagram of the structure of Example 2.

[0023] The reference numerals in the accompanying drawings include: base 1, bracket 2, first limiting block 3, hinge 4, locking block 5, second limiting block 6, rectangular limiting groove 7, arc-shaped limiting groove 8, pin 9, pin hole 10, bearing 11, nut seat 12, lead screw 13, servo motor 14, cylinder 15. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method: Example 1: A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding, basically as shown in the attached figure. Figure 1 and Figure 2 As shown, the fixture includes a base 1, a support 2, a reciprocating mechanism, and limiting blocks. The limiting blocks include an "I"-shaped first limiting block 3 and a second limiting block 6. The base 1 provides a stable support foundation for the entire fixture and is made of high-strength metal material to ensure that it will not shake during welding. The bottom end of the "7"-shaped support 2 is fixedly connected to the base 1, which can stably support the reciprocating mechanism.

[0025] The reciprocating mechanism uses a reciprocating lead screw, which is connected to the base 1 via a bracket 2 and located directly above the base 1. The middle of the first limiting block 3 is rotatably connected to the nut seat 12 of the reciprocating lead screw via a bearing 11, allowing the first limiting block 3 to rotate horizontally. Simultaneously, both ends of the upper surface of the first limiting block 3 are vertically rotatably connected to U-shaped locking blocks 5 via hinges 4. The open ends of the locking blocks 5 are slidably connected to the vertical section of the bracket 2, allowing them to slide along a specific direction on the bracket 2, providing guidance for the movement of the first limiting block 3 and ensuring its stability. Simultaneously, as a limit for horizontal rotation, it ensures that the nut seat 12 can move up and down along the direction of the lead screw 13 when the lead screw 13 rotates. The nut seat 12 is threaded onto the lead screw 13 of the reciprocating lead screw. The upper end of the lead screw 13 is connected to the servo motor 14. The lower end of the lead screw 13 passes through the second limit block 6 and is rotatably connected to the base 1. It is also rotatably connected to the second limit block 6 through the bearing 11. The servo motor 14 is fixed on the top of the bracket 2.

[0026] The second limiting block 6 is horizontally rotatably connected to the base 1, and the second limiting block 6 and the base 1 are limited by "П"-shaped pins 9 (the second limiting block 6 and the base 1 are respectively provided with two sets of pin 9 holes 10, each set of pin 9 holes 10 has two corresponding holes, and the two vertical sections of the pin 9 are inserted into them). When the second limiting block 6 rotates to the appropriate position, inserting the pin 9 can fix it and prevent rotation during the welding process. Both the first limiting block 3 and the second limiting block 6 are shaped with high ends and a low middle section. This structural design creates an operating space in the middle, facilitating welding operations. At the higher ends of the limiting blocks, there are arc-shaped limiting grooves 8 and rectangular limiting grooves 7, respectively. The arc-shaped limiting groove 8 is used to accommodate circular electrical connectors, and the rectangular limiting groove 7 is used to accommodate rectangular electrical connectors. The arc-shaped limiting groove 8 and the rectangular limiting groove 7 on the same limiting block are coaxial and parallel to the length direction of the limiting block. Protective pads made of elastic material are attached to the walls of both the arc-shaped limiting groove 8 and the rectangular limiting groove 7. The elastic deformation is 50%–60%, and the rebound deformation is 90%–95%. The working process of this embodiment is as follows: Combination Figure 3As shown, when welding a rectangular electrical connector, firstly rotate the first limiting block 3 and the second limiting block 6 to align their rectangular limiting grooves 7, then insert pin 9 to fix the second limiting block 6. Next, place the rectangular electrical connector between the two rectangular limiting grooves 7. Start the reciprocating screw; the nut seat 12 of the reciprocating screw moves, thereby moving the first limiting block 3 closer to the second limiting block 6. During the movement of the first limiting block 3, the locking block 5 slides along the bracket 2, providing guidance. Once the rectangular limiting grooves 7 on the first limiting block 3 and the second limiting block 6 clamp the circular electrical connector, stop the reciprocating screw. At this point, the protective pad contacts the surface of the rectangular electrical connector. Due to the suitable elastic deformation of the protective pad, it can tightly fit the connector, avoiding damage to the connector's appearance and preventing the welding pins from slipping during welding. Then, the operator can perform the welding operation. After welding is completed, reverse the movement of the reciprocating screw 13, moving the first limiting block 3 away from the second limiting block 6, and remove the welded circular electrical connector. When soldering a circular electrical connector, first remove the pin 9 between the second limiting block 6 and the base 1, rotate the second limiting block 6 while simultaneously rotating the first limiting block 3, aligning the rectangular limiting grooves 7 of both. Then, insert the pin 9 to fix the second limiting block 6 in place. The process is as follows: Figure 4 As shown. Place the circular electrical connector between the two arc-shaped limiting grooves 8. Following the same operation method as welding the circular electrical connector, move the first limiting block 3 through the reciprocating screw to clamp the rectangular electrical connector. Then perform the welding operation. After welding is completed, release and remove the connector.

[0027] Example 2 differs from Example 1 in that the reciprocating mechanism uses cylinder 15. The arc-shaped limiting groove 8 and the rectangular limiting groove 7 are parallel in axial direction. Neither the first limiting block 3 nor the second limiting block 6 needs to rotate horizontally, as... Figure 5 As shown, cylinder 15 is connected to base 1 via bracket 2. The piston rod of cylinder is connected to first limiting block 3 via bearing 11. The extension and retraction of cylinder 15 causes first limiting block 3 to move away from or closer to second limiting block 6.

[0028] Example 3 differs from Example 1 in that a handle is used instead of the servo motor 14, and the lead screw 13 is manually rotated.

[0029] Example 4 differs from Example 1 in that the axial directions of the arc-shaped limiting groove 8 and the rectangular limiting groove 7 are parallel, and neither limiting block needs to be rotated.

Claims

1. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding, comprising a base and a limiting block, characterized in that: It also includes a bracket and a reciprocating mechanism. The limiting block includes a first limiting block and a second limiting block. The second limiting block is connected to the base, and the first limiting block is connected to the reciprocating mechanism. The reciprocating mechanism drives the first limiting block away from or closer to the second limiting block. The reciprocating mechanism is connected to the base through the bracket. Both the first limiting block and the second limiting block are provided with an arc-shaped limiting groove and a rectangular limiting groove.

2. The universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 1, characterized in that: The limiting block has a shape that is high at both ends and low in the middle. The arc-shaped limiting groove and the rectangular limiting groove are coaxial and are respectively arranged at the higher ends of the limiting block.

3. The universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 2, characterized in that: The second limiting block is horizontally rotatably connected to the base, and the first limiting block is horizontally rotatably connected to the reciprocating mechanism.

4. The universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 1, characterized in that: The reciprocating mechanism is preferably a reciprocating lead screw. The first limiting block and the nut seat of the reciprocating lead screw are rotatably connected by a bearing. A locking block is detachably or vertically rotatably connected to the first limiting block, and the locking block is slidably connected to the bracket.

5. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 4, characterized in that: The second limiting block is limited to the bracket or base by a pin.

6. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 1, characterized in that: The arc-shaped limiting groove is parallel to the axis of the rectangular limiting groove.

7. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 6, characterized in that: The reciprocating mechanism is selected from a reciprocating lead screw or a cylinder.

8. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 7, characterized in that: The first limiting block is detachably or vertically rotatably connected to a locking block, which is slidably connected to the bracket.

9. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to any one of claims 1 to 8, characterized in that: Both the arc-shaped and rectangular limiting grooves have protective pads on their walls.

10. A universal welding fixture that combines the functions of rectangular and circular electrical connector wire bonding according to claim 9, characterized in that: The elastic deformation of the protective pad is 50% to 60%, and the rebound deformation is 90% to 95%.

Images