A current transformer secondary lead welding device

Abstract

The utility model relates to an electric current transformer secondary lead welding device relates to electronic component manufacturing technical field, including work table, positioning device, lead fixed establishment, winding cutting mechanism and welding mechanism, positioning device and lead fixed establishment left and right opposite setting are in work table, positioning device passes through locating rod and locating cone cover fixed electric current transformer, and through copper wire line holder fixed copper wire line makes it directional extension to lead fixed establishment one side, lead fixed establishment fixed secondary lead, makes the area that waits to weld horizontal stretch out and copper wire line intersection, lifting drive arrangement drives winding and pushes down the pole, rotates and winds copper wire line on secondary lead, drives again and cuts off the blade and cuts off the redundant copper wire line, welding mechanism sets up behind lead fixed establishment, through the tin box is pushed forward with the copper wire line winding part is immersed in molten tin liquid through the advance drive arrangement and is pushed forward and completes the immersion tin welding, the utility model structure is compact, and the immersion tin welding is uniform and reliable, and the production efficiency and welding quality are improved greatly.

Description

Technical Field

[0001] This invention relates to the field of electronic component manufacturing technology, specifically to a welding device for secondary leads of a current transformer. Background Technology

[0002] Current transformers are electrical devices widely used in power systems. They are mainly used to convert high-voltage, high-current devices into low-voltage, low-current devices for use by measuring instruments and relay protection devices.

[0003] The secondary side of the current transformer has copper wires leading out from both ends. The copper wires need to be wound around the area to be soldered on the secondary leads. Then, the wound part is dipped into molten solder through the tin-immersion process to complete the soldering, so as to realize the electrical connection between the current transformer and external measuring instruments or protection devices.

[0004] Currently, the above-mentioned processes need to be completed sequentially at different workstations, making it impossible to achieve centralized operations and severely limiting production efficiency. At the same time, the differences in skill levels and work attitudes among different operators lead to inconsistent welding quality, which can easily result in quality problems such as incomplete welding and false welding. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a welding device for the secondary leads of a current transformer, which at least partially solves the problems mentioned in the background art.

[0006] The technical solution adopted in this invention is as follows: A welding device for secondary leads of a current transformer, comprising: Workbench; The positioning device is fixedly installed on the workbench and includes a positioning seat, a positioning rod and a positioning cone sleeve. The positioning rod is vertically fixed on the positioning seat and the positioning cone sleeve is fitted on the upper part of the positioning rod for positioning and fixing the center hole of the disc-shaped current transformer. The lead wire fixing mechanism is symmetrically arranged on the worktable with the positioning device. It is used to clamp and fix the secondary lead wire, so that the area of ​​the secondary lead wire to be welded extends horizontally toward the side of the positioning device. The wire winding and cutting mechanism is mounted on a support frame above the workbench and includes a lifting drive device, a support arm, a wire winding lever, and a cutting unit. The soldering mechanism, located on the workbench and near the lead wire fixing mechanism, includes a solder box and a heating device.

[0007] Furthermore, the lead wire fixing mechanism includes a clamping seat, guide rods, lead wire pressing blocks, and a positioning plate. The clamping seat is installed on the workbench via a lifting device. The upper surface of the clamping seat is inclined. There are two sets of guide rods, which are vertically fixed on the clamping seat. The lead wire pressing blocks are slidably disposed on the two sets of guide rods. The positioning plate is disposed on the clamping seat and is located away from the positioning device. The guide rod is provided with a lead wire hole at its lower end, and the clamping seat is provided with a lead wire groove, which extends through the lead wire hole to the positioning plate. The lower surface of the lead wire clamping block is provided with anti-slip texture.

[0008] In a further embodiment, the positioning device further includes a wire clamping mechanism, which is disposed on the side wall of the clamping seat and includes a clamping block. The clamping block has a clamping groove at its center, the opening of the clamping groove has rounded edges, and an elastic clamping pad is movably disposed in the clamping groove.

[0009] Furthermore, the winding lever includes a rotary drive device, a main body, and a winding line; The rotary drive device is mounted on the support arm, the main rod is located at the output end of the rotary drive device, the guide wire is fixed at one end of the main rod and is located near the lead wire fixing mechanism, and the guide wire bends and extends toward the side opposite to its fixed position to form a guide wire section.

[0010] Furthermore, the cutting unit includes a cutting cylinder, a fixed blade, and a moving blade. The cutting cylinder is mounted on the support arm, the moving blade is hinged to the output end of the cutting cylinder, and the fixed blade is movably connected to the moving blade via a hinge shaft.

[0011] In a further embodiment, the tin box is embedded in the surface of the workbench, and the heating device is fixedly disposed below the tin box; The tin box contains molten tin; a heat-insulating cover is slidably mounted on top of the tin box.

[0012] In a further embodiment, the support frame has an inverted L-shaped structure and is fixed to the rear end of the workbench, and the lifting drive device is fixedly installed on the top crossbeam of the support frame.

[0013] In a further embodiment, the device further includes a control module, which is electrically connected to the lifting drive device and the rotating drive device of the winding and cutting mechanism, as well as the heating device and the propulsion drive device of the welding mechanism, respectively, for coordinating and controlling the actions of each mechanism in a preset sequence.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: By concentrating the positioning device, lead wire fixing mechanism, winding and cutting mechanism, and welding mechanism in the same workstation, each mechanism works collaboratively, requiring minimal floor space and eliminating the need for multi-station transmission. The copper wire clamp uses elastic elements to clamp the copper wire, maintaining its tension and ensuring that the copper wire does not loosen or shift during winding. The winding lever adopts a wire-pulling structure, rotating to wind the copper wire onto the secondary lead wire, ensuring winding quality. The actions of each mechanism are uniformly coordinated by the control module, realizing automated continuous operation of winding, cutting, and welding, reducing manual labor intensity and improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the welding device for the secondary leads of a current transformer proposed in an embodiment of the present invention; Figure 2 This is a front view of the current transformer secondary lead welding device proposed in an embodiment of the present invention; Figure 3 This is a schematic diagram of the lead wire fixing mechanism proposed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping seat proposed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the lead wire clamping block proposed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the wire clamping mechanism proposed in an embodiment of the present invention; Figure 7 for Figure 1 Enlarged view of point A in the middle.

[0016] in, 1. Workbench; 2. Positioning device; 21. Positioning seat; 22. Positioning rod; 23. Positioning cone sleeve; 24. Wire clamping mechanism; 241. Clamping block; 2411. Clamping groove; 2412. Elastic clamping pad. 3. Lead wire fixing mechanism; 31. Clamping seat; 311. Lead wire groove; 32. Guide rod; 321. Lead wire hole; 33. Lead wire pressing block; 34. Positioning plate. 4. Wire winding and cutting mechanism; 41. Lifting drive device; 42. Support arm; 43. Wire winding lever; 431. Rotation drive device; 432. Main rod body; 433. Wire guide; 44. Cutting unit; 441. Cutting cylinder; 442. Fixed blade; 443. Moving blade. 5. Welding mechanism; 51. Solder box; 52. Heating device; 53. Insulation cover; 6. Current transformer; 7. Secondary leads.

[0017] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0019] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0020] The secondary side of the current transformer has copper wires leading out from both ends. The copper wires need to be wound around the area to be soldered on the secondary leads. Then, the wound part is dipped into molten solder through the tin-immersion process to complete the soldering, so as to realize the electrical connection between the current transformer and external measuring instruments or protection devices.

[0021] Currently, the above-mentioned processes need to be completed sequentially at different workstations, making it impossible to achieve centralized operations and severely limiting production efficiency. At the same time, the differences in skill levels and work attitudes among different operators lead to inconsistent welding quality, which can easily result in quality problems such as incomplete welding and false welding.

[0022] Recognizing the above problems, this application proposes and discloses a device for welding the secondary leads of a current transformer, which improves production efficiency and ensures welding quality.

[0023] like Figure 1 and Figure 2 As shown in the figure, an embodiment of this disclosure provides a welding device for the secondary leads of a current transformer, comprising: Workbench 1; The positioning device 2 is fixedly installed on the workbench 1 and includes a positioning seat 21, a positioning rod 22 and a positioning cone sleeve 23. The positioning rod 22 is vertically fixed on the positioning seat 21 and the positioning cone sleeve 23 is sleeved on the upper part of the positioning rod 22 for positioning and fixing the center hole of the disc-shaped current transformer 6. The lead wire fixing mechanism 3 is symmetrically arranged on the workbench 1 with the positioning device 2, and is used to clamp and fix the secondary lead wire 7 so that the welding area of ​​the secondary lead wire 7 extends horizontally toward the positioning device 2. The winding and cutting mechanism 4 is mounted on the workbench 1 via a support frame and includes a lifting drive device 41, a support arm 42, a winding lever 43, and a cutting unit 44.

[0024] In this embodiment, the lifting drive device 41 drives the winding lever 43 to descend to the winding working position, and the winding lever 43 rotates to wind the copper wire onto the secondary lead 7; after the winding is completed, the lifting drive device 41 drives the cutting unit 44 to cut off the excess copper wire. The welding mechanism 5 is located on the workbench 1 and near the lead wire fixing mechanism 3, and includes a solder box 51 and a heating device 52.

[0025] In this embodiment, the center hole of the disc-shaped current transformer 6 is fitted onto the positioning cone sleeve 23 of the positioning device 2. The transformer can be fixedly positioned on the workbench 1 by the cooperation of the positioning rod 22 and the positioning cone sleeve 23. The secondary lead 7 can be placed in the lead fixing mechanism 3 for clamping, so that the welding area of ​​the secondary lead 7 extends horizontally toward the positioning device 2 and intersects with the copper wire drawn from the secondary side of the current transformer 6. The winding and cutting mechanism 4 completes the action of winding the copper wire on the welding area of ​​the secondary lead 7 at the intersection of the transformer and the secondary lead 7, and at the same time cuts off the excess copper wire. The welding mechanism 5 can weld the wound secondary lead 7 and the copper wire winding part to achieve the electrical connection and fixation between the two.

[0026] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the lead wire fixing mechanism 3 includes a clamping seat 31, guide rods 32, lead wire pressing blocks 33, and a positioning plate 34. The clamping seat 31 is mounted on the workbench 1 via a lifting device. The upper surface of the clamping seat 31 is inclined. There are two sets of guide rods 32, which are vertically fixed on the clamping seat 31. The lead wire pressing blocks 33 are slidably mounted on the two sets of guide rods 32. The positioning plate 34 is mounted on the clamping seat 31 and is located away from the positioning device 2. The guide rod 32 has a lead wire hole 321 at its lower end, and the clamping seat 31 has a lead wire groove 311. The lead wire groove 311 extends through the lead wire hole 321 to the positioning plate 34. The lower surface of the lead wire clamping block 33 is provided with anti-slip texture.

[0027] In this embodiment, the secondary lead 7 is placed in the lead groove 311 and its rear end abuts against the positioning plate 34. The lead pressure block 33 slides down along the guide rod 32 to fix the secondary lead. The area of ​​the secondary lead to be welded is exposed outside the clamping seat 31 and the lead pressure block 33 and extends obliquely toward the positioning device 2.

[0028] like Figure 6 As shown, the positioning device 2 also includes a wire clamping mechanism 24, which is located on the side wall of the clamping seat 31 and includes a clamping block 241. The clamping block 241 has a clamping groove 2411 in the center. The opening of the clamping groove 2411 is rounded at the edge. An elastic clamping pad 2412 is movably disposed in the clamping groove 2411.

[0029] In this embodiment, after the current transformer is installed on the positioning device 2, the copper wires led out from both ends of its secondary side pass through the wire clamping mechanism 24. The elastic clamping pad 2412 provides elastic clamping force, so that the copper wires maintain a certain tension and extend in a direction, intersecting with the welding area of ​​the secondary lead on the lead fixing mechanism 3.

[0030] like Figure 1 and Figure 7 As shown, the winding lever 43 includes a rotary drive device 431, a main rod body 432, and a winding line 433; The rotary drive device 431 is mounted on the support arm 42, the main rod body 432 is mounted at the output end of the rotary drive device 431, the guide wire 433 is fixed at one end of the main rod body 432 and is located near the lead wire fixing mechanism 3, and the guide wire 433 bends and extends toward the side opposite to its fixed position to form a guide wire part.

[0031] In this embodiment, the lifting drive device 41 drives the main rod 432 to descend to the intersection of the copper wire and the secondary lead wire. The wire-pulling part is located next to the intersection of the copper wire and the secondary lead wire. The rotation drive device 431 drives the main rod 432 to rotate, and the wire-pulling part pulls the copper wire to wrap around the secondary lead wire.

[0032] like Figure 1 and Figure 7 As shown, the cutting unit 44 includes a cutting cylinder 441, a fixed blade 442 and a moving blade 443. The cutting cylinder 441 is mounted on the support arm 42. The moving blade 443 is hinged to the output end of the cutting cylinder 441. The fixed blade 442 is movably connected to the moving blade 443 through a hinge shaft.

[0033] After the winding is completed, the lifting drive device 41 drives the winding lever 43 to avoid the cutting area, and the miniature cutting cylinder 441 drives the moving blade 443 to swing around the hinge axis, which works with the fixed blade 442 to cut off the excess copper wire after winding.

[0034] like Figure 1 and Figure 2 As shown, the tin box 51 is embedded in the surface of the workbench 1, and the heating device 52 is fixedly disposed below the tin box 51; The tin box 51 contains molten tin; a heat-insulating cover 53 is slidably provided on the top of the tin box 51.

[0035] In this embodiment, the heating device 52 is an electric heating element that can continuously heat the molten solder to 250-300°C; the heat preservation cover 53 covers the opening of the molten solder box 51 when the molten solder box 51 is not in operation, thereby reducing heat dissipation and oxidation of the molten solder.

[0036] like Figure 1As shown, the support frame has an inverted L-shaped structure and is fixed to the rear end of the workbench 1. The lifting drive device 41 is fixedly installed on the top crossbeam of the support frame.

[0037] In this embodiment, the device further includes a control module, which is electrically connected to the lifting drive device 41 and the rotating drive device 431 of the winding and cutting mechanism 4, as well as the heating device 52 and the propulsion drive device of the welding mechanism 5, and is used to coordinate and control the actions of each mechanism in a preset sequence.

[0038] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the material and spirit.

[0040] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit, they should all fall within the scope of protection.

Claims

1. A welding device for secondary leads of a current transformer, characterized in that, include: Workbench (1); The positioning device (2) is fixedly installed on the workbench (1) and includes a positioning seat (21), a positioning rod (22) and a positioning cone sleeve (23). The positioning rod (22) is vertically fixed on the positioning seat (21), and the positioning cone sleeve (23) is sleeved on the upper part of the positioning rod (22) for positioning and fixing the center hole of the disc-shaped current transformer. The lead wire fixing mechanism (3) is symmetrically arranged on the workbench (1) with the positioning device (2). It includes a lead wire holder for clamping and fixing the secondary lead wire, so that the area to be welded of the secondary lead wire extends horizontally toward the positioning device (2). The winding and cutting mechanism (4) is mounted on the workbench (1) by a support frame and includes a lifting drive device (41), a support arm (42), a winding lever (43) and a cutting unit (44). The welding mechanism (5) is located on the workbench (1) and near the lead wire fixing mechanism (3), and includes a solder box (51) and a heating device (52).

2. The current transformer secondary lead welding device according to claim 1, characterized in that, The lead wire fixing mechanism (3) includes a clamping seat (31), a guide rod (32), a lead wire pressing block (33), and a positioning plate (34). The clamping seat (31) is installed on the workbench (1) via a lifting device. There are two sets of guide rods (32), which are vertically fixed on the clamping seat (31). The lead wire pressing block (33) is slidably disposed on the two sets of guide rods (32). The positioning plate (34) is disposed on the clamping seat (31) and is located away from the positioning device (2). The guide rod (32) has a lead wire hole (321) at its lower end, and the clamping seat (31) has a lead wire groove (311). The lead wire groove (311) extends through the lead wire hole (321) to the positioning plate (34). The lower surface of the lead wire clamp (33) is provided with anti-slip texture.

3. The current transformer secondary lead welding device according to claim 2, characterized in that, The positioning device (2) further includes a wire clamping mechanism (24), which is located on the side wall of the clamping seat (31) and includes a clamping block (241). The clamping block (241) has a clamping groove (2411) in the center. The opening of the clamping groove (2411) is rounded at the edge. An elastic clamping pad (2412) is movably disposed in the clamping groove (2411).

4. The current transformer secondary lead welding device according to claim 2, characterized in that, The winding lever (43) includes a rotary drive device (431), a main body (432), and a winding line (433). The rotary drive device (431) is mounted on the support arm (42), the main rod body (432) is mounted on the output end of the rotary drive device (431), the guide wire (433) is fixed at one end of the main rod body (432) and is located near the lead wire fixing mechanism (3), and the guide wire (433) bends and extends toward the side opposite to its fixed position to form a guide wire part.

5. The current transformer secondary lead welding device according to claim 1, characterized in that, The cutting unit (44) includes a cutting cylinder (441), a fixed blade (442) and a moving blade (443). The cutting cylinder (441) is mounted on the support arm (42). The moving blade (443) is hinged to the output end of the cutting cylinder (441). The fixed blade (442) is movably connected to the moving blade (443) through a hinge shaft.

6. The current transformer secondary lead welding device according to claim 5, characterized in that, The tin box (51) is embedded in the surface of the workbench (1), and the heating device (52) is fixedly installed below the tin box (51); The tin box (51) contains molten tin; a heat-insulating cover (53) is slidably provided on the top of the tin box (51).

7. The current transformer secondary lead welding device according to claim 1, characterized in that, The support frame is an inverted L-shaped structure and is fixed to the rear end of the workbench (1). The lifting drive device (41) is fixedly installed on the top crossbeam of the support frame.

8. The current transformer secondary lead welding device according to claim 1, characterized in that, The device also includes a control module, which is electrically connected to the lifting drive device (41) and the rotation drive device (431) of the winding and cutting mechanism (4), and the heating device (52) and the propulsion drive device of the welding mechanism (5), respectively, for coordinating and controlling the actions of each mechanism in a preset sequence.

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