High-power electric resistance welding tool

Abstract

The utility model discloses a high-power electric resistance welding tool, which relates to the field of electric resistance welding and comprises a base, a fixed welding component is arranged on one side of the base, a sliding welding component is arranged on the other side of the base, the sliding welding component can transversely move on the base, and an L-shaped welding groove is arranged on one side of the fixed welding component close to the sliding welding component. A lifting welding assembly is arranged above the welding groove and can move in the vertical direction, and the fixed welding assembly, the sliding welding assembly and the lifting welding assembly can be close to one another to form a welding space. According to the high-power resistance welding tool, shaping and welding integration of a large-wire-diameter connecting wire and resistance welding of the large-wire-diameter connecting wire and a winding outgoing wire can be achieved, the welding efficiency is improved, tin and scaling powder materials are reduced, the material cost is reduced, and the cost, safety and reliability of an inverter inductor are further improved.

Description

Technical Field

[0001] The utility model relates to the field of resistance welding, in particular to a high-power resistance welding tool. Background Art

[0002] Resistance welding is a welding method that uses the resistance heat generated by the current passing through the workpiece and the welding contact surface to heat the weldment to a plastic or partially molten state, and then applies pressure to form a welded joint. Resistance welding has the advantages of fast welding speed, stable quality, simple operation, and low cost, and is widely used in the welding of various metals.

[0003] In the field of power electronics, in order to improve the performance of inverter inductors, it is necessary to perform resistance welding between large-diameter connecting wires and winding outlets to achieve good electrical connection and mechanical strength. However, due to the high stiffness of large-diameter connecting wires, it is not easy to align with the winding outlets, and the shape of the winding outlets is irregular and not easy to contact the electrodes. Therefore, traditional resistance welding tools are difficult to meet the resistance welding requirements of large-diameter connecting wires and winding outlets, which easily leads to problems such as loose welding, uneven welding, and unsightly welding, affecting the cost, safety and reliability of inverter inductors.

[0004] Therefore, there is an urgent need for a tool that can realize resistance welding of large-diameter connecting wires and winding outlet wires to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a high-power resistance welding tool, which can realize the integration of shaping and welding of large-diameter connecting wires, as well as resistance welding of large-diameter connecting wires and winding outlet wires, improve welding efficiency, reduce tin and flux materials, reduce material costs, and further improve the cost, safety and reliability of inverter inductors.

[0006] The above-mentioned optimized structure of the utility model is realized through the following technical scheme: a high-power resistance welding tool, including a base, a fixed welding assembly is provided on one side of the base, a sliding welding assembly is provided on the other side of the base, the sliding welding assembly can move laterally on the base, an L-shaped welding groove is provided on the side of the fixed welding assembly close to the sliding welding assembly, a lifting welding assembly is provided above the welding groove, the lifting welding assembly can move in the vertical direction, and the fixed welding assembly, the sliding welding assembly and the lifting welding assembly can be close to each other to form a welding space.

[0007] In some embodiments, the fixed welding assembly includes a fixed seat arranged on the base, the fixed seat is provided with an installation groove on the side close to the sliding welding assembly, a first welding head is provided in the installation groove, the first welding head is provided with the welding groove on the side close to the sliding welding assembly, a limit block is provided on the side of the fixed seat away from the sliding welding assembly, and a pressure block is also provided on the side of the fixed seat close to the sliding welding assembly, and the limit block and the pressure block can jointly limit the movement of the first welding head.

[0008] In some embodiments, the sliding welding assembly includes a fixed plate provided on the other side of the base, a driving device is provided on the side of the fixed plate away from the fixed welding assembly, an output shaft of the driving device passes through the fixed plate and is connected to a slider, and a second welding head is provided on the side of the slider close to the fixed welding assembly.

[0009] In some embodiments, the lifting welding assembly includes a lifting seat, a lifting device is fixedly connected to the top of the lifting seat, the lifting device can drive the lifting seat to move vertically, and a third welding head is provided at the bottom of the lifting seat.

[0010] In some embodiments, a slide rail is provided on the base, a slidable slide seat is provided on the slide rail, and the sliding welding assembly is fixed on the slide seat.

[0011] In some embodiments, the driving device is a cylinder.

[0012] In some embodiments, the bottom surface of the second welding head is higher than the bottom surface of the welding groove.

[0013] In summary, the utility model has the following beneficial effects:

[0014] (1) The utility model can realize the integration of shaping and welding of large-diameter connecting wires and resistance welding of large-diameter connecting wires and winding output wires by providing a fixed welding assembly, a sliding welding assembly and a lifting welding assembly, thereby improving welding efficiency, reducing tin and flux materials, reducing material costs, and further improving the cost, safety and reliability of the inverter inductor.

[0015] (2) The utility model adopts an L-shaped welding groove, so that the large-diameter connecting wire and the winding output wire can be aligned on the same plane, which facilitates the contact of the electrodes and the transmission of pressure, and avoids the problems of difficult alignment and poor contact in traditional resistance welding tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is the front view of the utility model.

[0018] In the figure: 1. base; 11. slide rail; 12. slide seat; 2. fixed welding assembly; 21. welding groove; 22. fixed seat; 23. first welding head; 24. limit block; 25. pressure block; 3. sliding welding assembly; 31. fixed plate; 32. driving device; 33. slider; 34. second welding head; 4. lifting welding assembly; 41. lifting seat; 42. third welding head. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] refer to Figure 1-2 A high-power resistance welding tool comprises a base 1, a fixed welding assembly 2 is arranged on one side of the base 1, a slide rail 11 is arranged on the base 1, a slidable slide seat 12 is arranged on the slide rail 11, a sliding welding assembly 3 is fixed on the slide seat 12, the sliding direction of the sliding welding assembly 3 can be limited by the slide rail 11, and at the same time, a supporting force can be provided on the sliding welding assembly 3 to enhance the sliding stability of the sliding welding assembly 3.

[0021] A sliding welding assembly 3 is provided on the other side of the base 1, and the sliding welding assembly 3 can move laterally on the base 1. An L-shaped welding groove 21 is provided on the side of the fixed welding assembly 2 close to the sliding welding assembly 3. A lifting welding assembly 4 is provided above the welding groove 21, and the lifting welding assembly 4 can move in the vertical direction. The fixed welding assembly 2, the sliding welding assembly 3 and the lifting welding assembly 4 can be close to each other to form a welding space.

[0022] The fixed welding assembly 2 includes a fixed seat 22 arranged on the base 1, and the fixed seat 22 is provided with a mounting groove on the side close to the sliding welding assembly 3, and a first welding head 23 is provided in the mounting groove. The first welding head 23 is provided with a welding groove 21 on the side close to the sliding welding assembly 3, and a limit block 24 is provided on the side of the fixed seat 22 away from the sliding welding assembly 3. The fixed seat 22 is also provided with a pressure block 25 on the side close to the sliding welding assembly 3. The limit block 24 and the pressure block 25 can jointly limit the movement of the first welding head 23.

[0023] The sliding welding assembly 3 includes a fixed plate 31 arranged on the other side of the base 1. A driving device 32 is provided on the side of the fixed plate 31 away from the fixed welding assembly 2. The driving device 32 can be a cylinder. The output shaft of the driving device 32 passes through the fixed plate 31 and is connected to a slider 33. The slider 33 can be fixed on the slide seat 12; a second welding head 34 is provided on the side of the slider 33 close to the fixed welding assembly 2. Under the action of the driving device 32, the slider 33 can drive the second welding head 34 to move horizontally on the base 1, thereby controlling the lateral distance between the second welding head 34 and the welding groove 21.

[0024] The bottom surface of the second welding head 34 can be higher than the bottom surface of the welding groove 21, and the second welding head 34 cooperates with the welding groove 21 and the third welding head 42 to align the large-diameter connecting wire and the winding output wire on the same plane, which is convenient for electrode contact and pressure transmission, thereby avoiding the alignment difficulties and poor contact problems in traditional resistance welding tooling; and the large-diameter connecting wire and the winding output wire can be subjected to uniform current and pressure in three directions, realizing comprehensive welding of the large-diameter connecting wire, and improving the strength and reliability of welding.

[0025] The lifting welding assembly 4 includes a lifting seat 41, and a lifting device is fixedly connected to the top of the lifting seat 41. The lifting device can drive the lifting seat 41 to move vertically. A third welding head 42 is provided at the bottom of the lifting seat 41. The lifting device enables the lifting welding assembly 4 to move in the vertical direction to achieve the adjustment of the height between the third welding head 42 and the welding groove 21, and together with the second welding head 34, to achieve the adjustment of the size of the welding space, thereby increasing the range of welding; the third welding head 42 can press the connection between the large wire diameter connecting wire and the winding outlet wire to achieve the height shaping of the connection between the large wire diameter connecting wire and the winding outlet wire.

[0026] The base 1 may also be provided with a controller, which may be electrically connected to the driving device 32, the lifting device, and the resistance welding transformer, and is used to control the lateral movement of the sliding welding assembly 3, the vertical movement of the lifting welding assembly 4, and the on and off of the welding current.

[0027] The working principle of the utility model is as follows:

[0028] When high-power resistance welding is required, firstly, the large-diameter connecting wire and the winding outlet wire are placed in the welding groove 21 respectively, so that they overlap each other, and then the driving device 32 is started to drive the slider 33 and the second welding head 34 to move toward the fixed welding assembly 2, and at the same time, the lifting device 42 is started to drive the lifting seat 41 and the third welding head 43 to move downward, so that the first welding head 23, the second welding head 34 and the third welding head 43 are respectively in contact with the large-diameter connecting wire and the winding outlet wire, and pressure is applied to form a welding space, and current is passed to form a welding circuit, and the large-diameter connecting wire and the winding outlet wire are heated to a plastic or partially melted state at the contact point by resistance heat, and then the power is turned off to cool them to form a firm welding joint, and the welding process is completed. After the welding is completed, the sliding welding assembly 3 and the lifting welding assembly 4 are reset respectively, the power is turned off, the operation of the driving device 32 and the lifting device 42 is stopped, and the welded workpiece is taken out for the next welding.

[0029] The advantage of the utility model is that, by adopting the combination of the fixed welding assembly 2, the sliding welding assembly 3 and the lifting welding assembly 4, the shaping and welding integration of the large-diameter connecting wire and the resistance welding of the large-diameter connecting wire and the winding outlet wire are realized, the welding efficiency and quality are improved, the welding deformation and defects are reduced, the material cost is reduced, and the performance and reliability of the inverter inductor are further improved. The utility model has a simple structure, is easy to operate, is easy to realize automation, and is suitable for tooling for high-power resistance welding.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-power resistance welding tool, characterized in that: The invention comprises a base (1), wherein a fixed welding assembly (2) is provided on one side of the base (1), and a sliding welding assembly (3) is provided on the other side of the base (1); the sliding welding assembly (3) can move laterally on the base (1); an L-shaped welding groove (21) is provided on a side of the fixed welding assembly (2) close to the sliding welding assembly (3); a lifting welding assembly (4) is provided above the welding groove (21); the lifting welding assembly (4) can move in a vertical direction; the fixed welding assembly (2), the sliding welding assembly (3) and the lifting welding assembly (4) can be brought close to each other to form a welding space.

2. A high-power resistance welding tool according to claim 1, characterized in that: The fixed welding assembly (2) comprises a fixed seat (22) arranged on the base (1); a mounting groove is provided on a side of the fixed seat (22) close to the sliding welding assembly (3); a first welding head (23) is provided in the mounting groove; a welding groove (21) is provided on a side of the first welding head (23) close to the sliding welding assembly (3); a limiting block (24) is provided on a side of the fixed seat (22) away from the sliding welding assembly (3); a pressing block (25) is also provided on a side of the fixed seat (22) close to the sliding welding assembly (3); the limiting block (24) and the pressing block (25) can jointly limit the movement of the first welding head (23).

3. A high-power resistance welding tool according to claim 1, characterized in that: The sliding welding assembly (3) comprises a fixed plate (31) arranged on the other side of the base (1); a driving device (32) is provided on a side of the fixed plate (31) away from the fixed welding assembly (2); an output shaft of the driving device (32) passes through the fixed plate (31) and is connected to a sliding block (33); and a second welding head (34) is provided on a side of the sliding block (33) close to the fixed welding assembly (2).

4. A high-power resistance welding tool according to claim 1, characterized in that: The lifting welding assembly (4) comprises a lifting seat (41), the top of the lifting seat (41) is fixedly connected to a lifting device, the lifting device can drive the lifting seat (41) to move vertically, and the bottom of the lifting seat (41) is provided with a third welding head (42).

5. A high-power resistance welding tool according to claim 1, characterized in that: A slide rail (11) is provided on the base (1), a slidable slide seat (12) is provided on the slide rail (11), and the slide welding assembly (3) is fixed on the slide seat (12).

6. A high-power resistance welding tool according to claim 3, characterized in that: The driving device (32) is a cylinder.

7. A high-power resistance welding tool according to claim 3, characterized in that: The bottom surface of the second welding head (34) is higher than the bottom surface of the welding groove (21).

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