Transformer coil wire welding clamp

Abstract

The invention relates to the technical field of welding clamps, in particular to a transformer coil wire welding clamp which comprises a base, two wire fixing structures are arranged on the base at intervals, each wire fixing structure comprises a wire penetrating body, and a wire penetrating cavity allowing a wire to penetrate through is formed in each wire penetrating body. Two opposite cavity walls of the threading cavity are respectively provided with a wire pressing piece and a pressing matching surface, and the wire pressing piece is used for pressing a wire to be welded on the pressing matching surface; when conducting wire welding is conducted, two conducting wires penetrate through the two wire penetrating cavities of the welding clamp respectively, the welding ends of the two conducting wires are connected in the space between the two conducting wire fixing structures, meanwhile, the conducting wires in the corresponding wire penetrating cavities are fixed through cooperation of the wire pressing pieces and the pressing matching faces, and the positions of the welding ends of the two conducting wires are kept; and the wire is fixed by using the clamp, so that extra labor is not needed, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding fixtures, and in particular to a transformer coil wire welding fixture. Background Art

[0002] The coil is the circuit part of the transformer and also the "heart" of the transformer. Coil winding is a key link in the production of the entire transformer, so it is very important to strictly control the coil winding process. The coil winding process is achieved by using a winding disk in conjunction with a winding machine. The wire on the winding disk extends to the winding die on the rotating shaft of the winding machine. As the rotating shaft of the winding machine rotates, the wire is wound around the winding die and drives the winding disk to rotate. The wire part between the winding machine and the winding disk is in a tensioned state. At present, the coil winding is segmented. After winding a section, the wire must be cut off. After the winding die is adjusted, the wire on the winding disk is welded to the wire on the winding die, and then another section is wound. The quality of welding directly affects the electrical performance of the coil.

[0003] The current welding method is that one person is responsible for holding and fixing the two wires to be welded, and another person is responsible for welding. This welding method requires the cooperation of two people, which wastes labor costs to a certain extent. At the same time, during the welding process, another worker may have to stop the ongoing operation for 1-2 minutes, affecting the normal progress of other operations. Summary of the invention

[0004] The purpose of the present invention is to provide a transformer coil wire welding fixture to solve the problem of high labor cost in the current welding method.

[0005] The technical solution of the transformer coil wire welding fixture of the present invention is:

[0006] A transformer coil wire welding fixture comprises a base, on which two wire fixing structures are arranged at intervals, the wire fixing structure comprises a threading body, on which a threading cavity is arranged for the wire to pass through, and on two opposite cavity walls of the threading cavity, a wire pressing piece and a pressing fitting surface are respectively arranged, and the wire pressing piece is used to press the wire to be welded onto the pressing fitting surface.

[0007] Beneficial effect: When welding wires, the two wires are respectively passed through the two threading cavities of the welding fixture, so that the welding ends of the two wires are connected in the space between the two wire fixing structures. At the same time, the wire pressing piece is used to cooperate with the pressing fitting surface to fix the wires in the corresponding threading cavity, and the positions of the welding ends of the two wires are maintained. The wires are fixed by the fixture, and no additional manpower is required, thereby reducing labor costs.

[0008] Furthermore, the threading body has a first side wall and a second side wall opposite to each other, and the opposite wall surfaces of the first side wall and the second side wall respectively constitute two opposite cavity walls of the threading cavity. A threaded hole is provided on the first side wall, and the wire pressing piece is a clamping rod threadedly connected in the threaded hole.

[0009] Beneficial effect: The conductor can be compressed by twisting the compression rod, the structure is simple, and the compression is reliable.

[0010] Furthermore, a portion of the clamping rod that passes through the threaded hole is threadedly connected with a locking nut, and the locking nut is located on a side of the first side wall away from the threading cavity.

[0011] Beneficial effect: The locking nut can be used to lock the clamping rod and the threading body after the clamping rod clamps the wire to prevent the clamping rod from loosening. In this way, the clamping rod is held in position by the locking nut, and there is no need to set a very deep threaded hole, which is beneficial to thinning the thickness of the first side wall, reducing the weight of the threading body, and preventing the excessive weight of the clamp from affecting the position of the wire.

[0012] Furthermore, the clamping rod includes a main rod body and a pressure plate movably mounted on one end of the main rod body located in the threading cavity. The main rod body is provided with a limiting structure for limiting the pressure plate in the axial direction of the main rod body to drive the pressure plate to clamp the wire when the main rod body moves.

[0013] Beneficial effect: The main rod body can be made to rotate relative to the pressure plate, which is beneficial to prevent the pressure plate from wearing the conductor.

[0014] Furthermore, a screwing handle is provided at one end of the pressing rod located outside the threading cavity.

[0015] Beneficial effect: It is convenient for workers to screw the pressing rod.

[0016] Furthermore, the base is a connecting rod, and the threading bodies of the two wire fixing structures are respectively fixed at two ends of the connecting rod.

[0017] Beneficial effects: The two threading bodies are connected together by a connecting rod, which has a simple structure and is convenient for maintaining the relative positions of the two threading bodies. At the same time, after the two wires are fixed by the clamp, the tension of the wires is used to maintain the position of the clamp, which can ensure normal welding operation.

[0018] Furthermore, the connecting rod is a U-shaped rod, which includes two opposite side rod sections and a middle rod section connecting the two side rod sections, and the threading bodies of the two wire fixing structures are respectively fixed to the two side rod sections.

[0019] Beneficial effect: The U-shaped connecting rod can avoid the welding torch flame during welding, leaving a suitable welding space, so that the clamp can be removed in time after welding.

[0020] Furthermore, the base includes a fixing frame for supporting on the ground, and the threading body is provided with a fixing structure for fixing with the fixing frame.

[0021] Beneficial effect: The fixed frame supported on the ground is used to maintain the position of the threading body, so as to prevent the deadweight of the clamp from affecting the position of the conductor.

[0022] Furthermore, the threading body is a U-shaped structure.

[0023] Beneficial effects: It is easy to shape, and the side opening of the U-shaped structure is convenient for installing the pressing rod.

[0024] Furthermore, the wire pressing piece and the pressing fitting surface are arranged vertically.

[0025] Beneficial effect: The wire can be supported by the compression fit surface, making it easier to control the position of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the transformer coil wire welding fixture of the present invention when in use;

[0027] Figure 2 It is a structural schematic diagram of Example 1 of the transformer coil wire welding fixture of the present invention.

[0028] In the figure: 1, connecting rod; 2, threading body; 21, threading cavity; 3, clamping rod; 31, main rod body; 32, pressure plate; 4, locking nut; 5, screw rod; 6, wire. DETAILED DESCRIPTION

[0029] Embodiment 1 of the transformer coil wire welding fixture of the present invention:

[0030] In the present embodiment, when welding the wires, the two wires are respectively passed through the two threading cavities of the welding fixture, so that the welding ends of the two wires are connected in the space between the two wire fixing structures. At the same time, the wire pressing piece is used to cooperate with the pressing fitting surface to fix the wires in the corresponding threading cavity, and the positions of the welding ends of the two wires are maintained. The fixture is used to fix the wires, and no additional manpower is required, thereby reducing labor costs.

[0031] Specifically, Figure 1 , Figure 2 As shown, the transformer coil conductor welding fixture includes a base, on which two conductor fixing structures are spaced apart at front and rear positions, the base is a connecting rod 1, the conductor fixing structure includes a threading body 2, the threading body 2 is provided with a threading cavity 21 for the conductor to pass through, and the threading cavity has two opposite cavity walls respectively provided with a clamping rod 3 and a clamping fitting surface, the clamping rod constitutes a wire pressing member for clamping the conductor 6 to be welded on the clamping fitting surface.

[0032] The threading body 2 is a U-shaped structure formed by bending a plate. The U-shaped threading body 2 has a first side wall and a second side wall opposite to each other up and down, and a third side wall connecting the first side wall and the second side wall. The space between the first side wall and the second side wall constitutes a threading cavity 21. The first side wall and the end of the second side wall away from the third side wall form a side opening of the threading body. The opposite wall surfaces of the first side wall and the second side wall respectively constitute the opposite two cavity walls of the threading cavity. A threaded hole is provided on the first side wall disposed on the upper side, and the clamping rod 3 is threadedly connected in the threaded hole. The upper side surface of the second side wall disposed on the lower side constitutes a clamping fit surface.

[0033] The clamping rod 3 includes a main rod body 31 which can be modified from a screw rod. The main rod body 31 is threadedly connected to the threaded hole. The main rod body has a lower end extending into the threading cavity and an upper end extending outside the threading body. The lower end of the main rod body is movably sleeved with a pressure plate 32, which is a circular disc. The pressure plate 32 has a center hole for the lower end of the main rod body 31 to pass through. The lower end of the main rod body is provided with a smooth rod portion, and the pressure plate 32 is sleeved on the smooth rod portion, and the pressure plate and the main rod body can rotate relative to each other. A downward upper stop step is provided at the junction of the threaded portion of the main rod body and the smooth rod portion. The upper stop step is located on the upper side of the pressure plate to stop the upward movement of the pressure plate 32. The end of the smooth rod portion of the main rod body 31 is provided with a flange, which is located on the lower side of the pressure plate to stop the downward movement of the pressure plate, and the upper stop step and the flange together constitute a limiting structure for limiting the pressure plate 32 in the axial direction of the main rod body. The pressure plate 32 has a concave cavity facing downward, and the flange is hidden in the concave cavity. The portion of the lower disk surface of the pressure plate 32 located at the periphery of the concave cavity constitutes a downward pressing surface. When the main rod body 31 is screwed in, the pressure plate 32 moves downward with the main rod body. When the pressing surface of the pressure plate 32 contacts the wire 6, the main rod body can rotate relative to the pressure plate, and the pressure plate no longer rotates with the main rod body, so that the pressure plate can avoid abrasion of the wire. The flange at the end of the smooth rod part of the main rod body can be formed by upsetting, so as to facilitate the installation of the pressure plate on the main rod body.

[0034] A screwing rod 5 is provided at the upper end of the main rod body 31 of the clamping rod 3. The middle part of the screwing rod 5 is welded to the upper end of the main rod body of the clamping rod 3. The screwing rod constitutes a screwing handle to facilitate workers to screw the clamping rod.

[0035] A locking nut 4 is also threadedly connected to the portion of the clamping rod 3 located between the screwing rod 5 and the threading body 2. The locking nut 4 is located on the side of the first side wall away from the threading cavity 21. A spring washer is also provided between the locking nut 4 and the first side wall. After the clamping rod 3 clamps the wire 6, the locking nut is used to lock the clamping rod and the threading body to prevent the clamping rod from loosening. In this way, the clamping rod is held in position by the locking nut, thereby eliminating the need to set a very deep threaded hole, which is beneficial to thinning the thickness of the first side wall, reducing the weight of the threading body, and preventing the excessive weight of the clamp from affecting the position of the wire.

[0036] The pressing surface of the pressing rod 3 faces upwards, and when the two wires 6 are pressed, the pressing surface can be used to support the wires 6, so as to control the position of the wires 6 and ensure that they are pressed in place. The wires in this embodiment are dry-type transformer wires, and the wires are flat copper wires. The pressure plate is pressed on the side surface of the flat copper wire in the thickness direction.

[0037] The connecting rod 1 is a U-shaped rod, formed by bending a rod material. The U-shaped rod includes two side rod sections facing each other and a middle rod section connecting the two side rod sections. The threading bodies of the two wire fixing structures are respectively fixed to the two side rod sections. The upward ends of the two side rod sections constitute the two ends of the connecting rod. The middle part of the lower side surface of the second side wall of the threading body is welded and fixed to the side rod sections. The welding ends of the two wires are overlapped and welded above the middle rod section. The U-shaped connecting rod can avoid the torch flame during welding, leaving a suitable welding space. In addition, since the middle rod section is far away from the torch flame and has a lower temperature, it is convenient to hold the middle rod section after welding and remove the clamp in time.

[0038] When in use, place the connecting rod of the clamp downward, first place a section of wire 6 under the pressure plate 32, screw the pressing rod 3 to fix the wire 6 and the clamp together, and fix another section of wire 6 in the same way. The fixing position standard is: the welding port of the wire 6 is at the center of the connecting rod 1; then overlap the welding ends of the two wires. Align the two wire positions and keep the wires horizontal. The clamp does not require additional support. After the clamp is fixed with the two sections of wire, the wire between the winding machine and the winding drum can be formed into a whole, so that the tension of the wire is used to keep the clamp suspended in the air. Since the clamp is light in weight, it has little effect on the sagging of the wire, which can meet the welding operation. After the preparation work is completed, use a tin rod and a welding gun to weld the wires. The flame sprayed by the welding gun is at a certain distance from the middle rod section of the connecting rod, so that the temperature of the middle rod section of the connecting rod will not be too high, which is convenient for people to hold by hand after welding to disassemble the clamp.

[0039] The fixture can replace part of the manpower in the welding process to splice the two wires together; the two wires are generally horizontal during the welding process to avoid the wires tilting and causing the tin liquid to flow out, ensuring a full weld; after one welding is completed, it can be observed whether the weld position is full. If it does not meet the requirements, a second welding can be performed after cooling; while improving production efficiency, it also ensures the quality of welding.

[0040] Embodiment 2 of the transformer coil wire welding fixture of the present invention:

[0041] This embodiment provides a different arrangement of the wire pressing member from that of the first embodiment. The difference between this embodiment and the first embodiment is that the wire pressing member in the first embodiment is a clamping rod threadedly connected to a threaded hole on the threading body. In this embodiment, the wire pressing member includes a rod body threaded on the first side wall and a disc body fixed at the lower end of the rod body. The disc body is used to clamp the wire. A compression spring is provided between the disc body and the first side wall. A pull-out handle is provided at one end of the rod body extending out of the threading body. The disc body is moved away from the second side wall by pulling the rod body. After the wire passes through the threading cavity, the rod body is released, and the compression spring pushes the disc body to clamp the wire. The wire is clamped by the elastic force of the compression spring.

[0042] Embodiment 3 of the transformer coil wire welding fixture of the present invention:

[0043] This embodiment provides a different locking nut arrangement from that of Embodiment 1, and the difference between this embodiment and Embodiment 1 is that the portion of the clamping rod passing through the threaded hole in Embodiment 1 is threadedly connected with a locking nut. In this embodiment, no locking nut is provided, and the clamping of the wire is achieved only by tightening the clamping rod.

[0044] Embodiment 4 of the transformer coil wire welding fixture of the present invention:

[0045] This embodiment provides a different arrangement of a pressure plate from that of the first embodiment. The difference between this embodiment and the first embodiment is that the pressure rod in the first embodiment includes a main rod body and a pressure plate movably mounted on one end of the main rod body located in the threading cavity. In this embodiment, no pressure plate is provided, and the end of the pressure rod is directly pressed on the wire.

[0046] Embodiment 5 of the transformer coil wire welding fixture of the present invention:

[0047] This embodiment provides a screwing handle arrangement different from that of the first embodiment. The difference between this embodiment and the first embodiment is that the end of the clamping rod outside the threading cavity in the first embodiment is provided with a screwing handle. In this embodiment, no screwing handle is provided, and a hexagonal head is provided at the upper end of the clamping rod to facilitate screwing the clamping rod with a wrench.

[0048] Embodiment 6 of the transformer coil wire welding fixture of the present invention:

[0049] This embodiment provides a different base setting form from that of the first embodiment. The difference between this embodiment and the first embodiment is that the base in the first embodiment is a connecting rod. In this embodiment, the connecting rod is eliminated, and the base includes a fixing frame for supporting on the ground, and a fixing structure for fixing with the fixing frame is provided on the threading body. The fixing frame supported on the ground is used to maintain the position of the threading body, and the clamp is supported on the ground.

[0050] Embodiment 7 of the transformer coil wire welding fixture of the present invention:

[0051] This embodiment provides a different connection rod arrangement form from that of the first embodiment. The difference between this embodiment and the first embodiment is that the connection rod in the first embodiment is a curved U-shaped rod. In this embodiment, the connection rod is a straight rod.

[0052] Embodiment 8 of the transformer coil wire welding fixture of the present invention:

[0053] This embodiment provides a threading body arrangement different from that of the first embodiment, and the difference between this embodiment and the first embodiment is that the threading body in the first embodiment is a U-shaped structure with one side opening in the left and right directions. In this embodiment, the threading body is a square frame structure, and the threading cavity has only two side openings, front and back.

[0054] Embodiment 9 of the transformer coil wire welding fixture of the present invention:

[0055] This embodiment provides a different arrangement of the wire pressing member from that of the first embodiment. The difference between this embodiment and the first embodiment is that the pressing rod and the pressing mating surface in the first embodiment are arranged vertically, and the pressing mating surface is a horizontal surface. In this embodiment, the pressing rod and the pressing mating surface are arranged horizontally, and the pressing mating surface is a vertical surface.

[0056] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transformer coil wire welding fixture, characterized in that: It includes a base, on which two wire fixing structures are arranged at intervals. The wire fixing structure includes a threading body, on which a threading cavity is provided for the wire to pass through. A wire pressing piece and a pressing fitting surface are respectively provided on the two opposite cavity walls of the threading cavity. The wire pressing piece is used to press the wire to be welded onto the pressing fitting surface.

2. The transformer coil wire welding fixture according to claim 1 is characterized in that: The threading body has a first side wall and a second side wall opposite to each other. The opposite wall surfaces of the first side wall and the second side wall respectively constitute the opposite cavity walls of the threading cavity. The first side wall is provided with a threaded hole. The thread pressing piece is a clamping rod threadedly connected in the threaded hole.

3. The transformer coil wire welding fixture according to claim 2, characterized in that: The portion of the pressing rod that passes through the threaded hole is threadedly connected with a locking nut, and the locking nut is located on a side of the first side wall away from the threading cavity.

4. The transformer coil wire welding fixture according to claim 2 or 3, characterized in that: The clamping rod includes a main rod body and a pressure plate movably mounted on one end of the main rod body located in the threading cavity. The main rod body is provided with a limiting structure for limiting the pressure plate in the axial direction of the main rod body to drive the pressure plate to clamp the wire when the main rod body moves.

5. The transformer coil wire welding fixture according to claim 2 or 3, characterized in that: One end of the pressing rod located outside the threading cavity is also provided with a screwing handle.

6. The transformer coil wire welding fixture according to claim 1, 2 or 3, characterized in that: The base is a connecting rod, and the threading bodies of the two wire fixing structures are respectively fixed at two ends of the connecting rod.

7. The transformer coil wire welding fixture according to claim 6, characterized in that: The connecting rod is a U-shaped rod, which includes two opposite side rod sections and a middle rod section connecting the two side rod sections. The threading bodies of the two wire fixing structures are respectively fixed to the two side rod sections.

8. The transformer coil wire welding fixture according to claim 1, 2 or 3, characterized in that: The base comprises a fixing frame for supporting on the ground, and the threading body is provided with a fixing structure for fixing with the fixing frame.

9. The transformer coil wire welding fixture according to claim 1, 2 or 3, characterized in that: The threading body is a U-shaped structure.

10. The transformer coil wire welding fixture according to claim 1, 2 or 3, characterized in that: The wire pressing piece and the pressing fitting surface are arranged up and down.

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