Multifunctional welding wire broken end butt joint equipment

Abstract

The invention relates to multifunctional welding wire broken end butt joint equipment. Two clamps which are not in contact with each other are arranged on a base; the chuck end of each clamp clamps the broken ends of the welding wires, so that the broken ends of the two welding wires can be close to each other and make contact with each other. And the wire connecting end of each clamp is connected with a power line, so that the two clamps form a power supply electrode during welding wire butt welding. A supporting nest is arranged on the lower bottom face of the center of each clamp, a supporting rod is arranged below each supporting nest, a telescopic spring with the inclined central axis is connected between the lower side of the wire connecting end of each clamp and the equipment base, and the supporting rods can swing in the left-right direction while swinging up and down around the supporting nests. The equipment is exquisite in structure, diversified in function, tight in butt joint of welding wire broken ends and good in welding quality.

Description

Technical Field

[0001] The present invention relates to a technology for butt welding of broken wire ends of welding wires, and particularly refers to a butt welding machine. Background Art

[0002] Before butt welding stainless steel wires, some preparatory work needs to be carried out, including selecting a suitable welding machine, preparing appropriate welding materials, preparing surface cleaning tools after welding, etc.

[0003] Welding joint forms of welding wires: butt joint, corner joint, T-shaped joint, and lap joint.

[0004] Butt joint structure: A joint where the middle planes of two connected parts are in the same plane or the same arc surface at the joint for welding. Corner joint structure: A joint where the middle planes of two connected parts are perpendicular or intersect at a certain angle at the joint for welding, and a fillet weld is formed at the corner joint. Lap joint structure: A joint where two connected parts partially overlap at the joint, and the middle planes are parallel to each other for welding.

[0005] The patent with the authorization announcement number CN219746182U introduces a wire butt joint mechanism, including a butt joint table, a fixed wire clamping seat and a sliding wire clamping seat oppositely arranged at the top of the butt joint table, a wiring pipe arranged between the fixed wire clamping seat and the sliding wire clamping seat, with both ends of the wiring pipe communicating with the fixed wire clamping seat and the sliding wire clamping seat respectively, and the wiring pipe having a guiding end facing the sliding wire clamping seat; a trimming part arranged between the fixed wire clamping seat and the wiring pipe, the trimming part being rotatably connected to the butt joint table, and the trimming part having a trimming channel with both ends open, and the trimming channel being arranged along the same axis as the fixed wire clamping seat, the wiring pipe and the wiring pipe. This utility model does not provide an explanation of the connection method of the butt power supply line, nor does it provide a structural explanation of how to achieve effective butt joint.

[0006] The utility model with the authorization announcement number CN210413001U discloses a wire butt joint mechanism, which includes a mobile vehicle frame with walking wheels, and a wire butt joint unit and a weld bead flange trimming unit are arranged at the top of the mobile vehicle frame; the wire butt joint unit includes a fixed clamping frame and a mobile clamping frame; the weld bead flange trimming unit includes a trimming die and a mobile clamp; the mobile clamp is slidably connected to the top of the mobile vehicle frame, and a clamping head matching the welding wire is arranged on the mobile clamp. This utility model can clamp the welding wire, but cannot ensure the tight butt joint at the joint of two welding wires. Summary of the Invention

[0007] Object of the Invention The invention overcomes the problems that the traditional wire butt welding machine needs an electrode joint in addition to the clamp, and the butt welding gap is large, and the degree of welding point grinding is difficult to accurately control. The invention provides a multifunctional wire butt welding device with a clamp and an electrode joint, no butt welding gap, and accurate control of welding point grinding amount.

[0008] Technical solution: The multifunctional welding wire broken end butt welding device of the present invention can butt weld the broken ends of two welding wires. It has an equipment base, on which are two clamps that do not contact each other and can clamp one broken end of welding wire respectively; one end (clamp end) of each clamp has a movable clamp that can clamp the broken ends of welding wire and make the two broken ends close to each other and contact each other.

[0009] Preferably, the movable clamp of each clamp has a wire groove capable of clamping the broken wire end, and the end faces of the two broken wire ends clamped by the two wire grooves are close to and contact each other (the two broken wire ends are slightly exposed from the wire grooves and contact each other; or, one broken wire end is exposed from the wire groove, and the other is retracted in the wire groove, and the exposed broken wire end can extend into the other wire groove and contact the other broken wire end).

[0010] The other end (connecting end) of each clamp is connected to an electrode of the welding power source, so that the two clamps constitute the positive and negative electrodes when the welding wires are butt-welded.

[0011] The central lower bottom surface of each clamp has a recessed circular shell-shaped support socket, and a support rod is provided below the support socket. The upper end of the support rod has a spherical column head that cooperates with the support socket, so that the support rod can move flexibly in the up, down, left and right directions around the support socket, that is, the two are in a universal joint-type movable connection.

[0012] A telescopic spring is connected between the lower side of the connecting end of the clamp and the base of the equipment. The upper and lower ends of the telescopic spring have inclined spring seats, so that the central axis of the spring is inclined (not plumb or perpendicular to the bottom plane of the base); the distance between the lower ends of the two springs is greater than the distance between the upper ends, so that when the connecting end of the clamp is pressed downward, the distance between the connecting ends of the two clamps gradually increases; according to the principle of lever movement and the rotation principle of the universal joint, the support rod swings up and down around the support socket while also swinging left and right (swinging movement of a small distance, without the need for a large range of rotational movement), so the distance between the chuck ends of the two clamps gradually decreases, so that the two broken ends of the welding wire are in close contact and docking.

[0013] Preferably, the inclined surfaces of the spring seats at the upper and lower ends are parallel to each other, and the sizes of the springs and the spring seats are the same, ensuring that the two clamps can basically remain horizontal when pressed to the bottom, so that the welding wire groove and the broken wire ends therein are basically in a straight line, and the quality of the butt welding of the two broken wire ends is best.

[0014] At this time, the welding switch is turned on, and the two electrodes and the two butt - contacting welding wires form a closed circuit. The welding wires start to melt and butt - weld relying on their own resistance heat. The energized welding time is very short, generally less than 1 second. Even if manually pressing the connecting segment, the welding process can be successfully completed. If there are slight defects in the solder joints, the following grinding process can be used for correction.

[0015] The distance between two substantially parallel jigs is small, facilitating an operator to simultaneously press (or hold a rigid pressing plate for stable synchronous pressing) the connecting ends of the two jigs with one hand.

[0016] After the two broken ends are butt - welded, the welding switch is turned off and the circuit is de - energized. Then, the clamping ends of the jigs are opened (such as a structure similar to a duck - bill pliers, loosening or peeling), and the welded welding wire is taken out from the wire groove. Then, without the jigs pressing, the spring bounces up and the welding process ends.

[0017] After the spring bounces up, the distance between the connecting ends of the two jigs decreases. According to the lever movement principle, the distance between the clamping ends of the two jigs will increase and move away from each other, facilitating the clamping of the broken ends of the welding wire in the next process.

[0018] Preferably, the cross - sectional dimension of the jig is much larger than that of the welding wire. Preferably, the jig is made of brass with a resistivity less than that of the welding wire. According to the resistance calculation formula R = ρL / S, the resistance of the jig is much smaller than that of the welding wire. When the same current passes through, when the welding wire generates heat, the jig hardly generates heat and does not get hot. Moreover, the mechanical strength and oxidation resistance of brass are better than those of copper, and it is not easy to deform or corrode.

[0019] On the equipment base, there is another set of grinding wheels and a grinding tool switch for the welding wire joints. After the two broken ends of the above - mentioned welding wires are butt - welded, the diameter at the welded joint is thicker than the diameter of the welding wire. The redundant welding material at the welded joint or welded section is ground using the grinding wheel. The gap between the two grinding wheels is the diameter of one welding wire. During grinding, the welded joint of the welding wire is placed in the middle of the two grinding wheels, facilitating the rapid grinding of the redundant size at the welded joint. The generated waste chips fall from the gap, and a welded joint or welded section with the same diameter as the welding wire is obtained.

[0020] Preferably, the grinding wheels are two coaxially and parallelly arranged. The diameter of the inner one is smaller than that of the outer one. The outer grinding wheel can block the waste chips and prevent them from flying onto the face of the operator on the outside.

[0021] Beneficial effects: The present invention combines three functions: tight butt joint of welding wires, welding, and grinding processing of welding spots; the fixture therein can hold the welding wires, serve as a conductive electrode, and facilitate manual pressing; the spring can not only press and rebound, but also serve as a protective sleeve for the power cord and can regulate the gap at the chuck end of the fixture; the distance setting between the two grinding wheels can ensure grinding of excess solder, make the welding spot have the same diameter as the welding wire, and prevent welding chips from splashing.

[0022] This equipment has the advantages of delicate structure, diverse functions, safe and convenient operation, tight butt joint of the broken ends of welding wires, good welding quality (not easy to have false soldering or de-soldering), and the same appearance size of the welding spot as the diameter of the welding wire. Brief Description of the Drawings

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of a part of the spring of the present invention; Figure 3 is a three-dimensional structural schematic diagram of a part of the support rod of the present invention; Figure 4 is another three-dimensional structural schematic diagram of the present invention; Figure 5 is Figure 4 a schematic diagram of a state when the grinding wheel is in use in

[0024] In the figure, 1 - fixture (31 - one fixture, 32 - the other fixture); 2 - chuck end; 3 - connection end; 4 - support socket; 5 - support rod; 6 - spherical head; 7 - telescopic spring; 8 - inclined spring seat; 9 - welding switch; 10 - grinding wheel A; 11 - grinding wheel B; 12 - grinding tool switch; 21 - one welding wire; 22 - the other welding wire. Detailed Description of the Invention

[0025] Embodiment 1: As Figure 1 shown in the multifunctional welding wire broken end butt joint device, it has a device base, and there are two fixtures 1 on the base that do not contact each other and can respectively hold the broken ends of one welding wire. As Figure 3 shown, the broken ends of the welding wires can be held in the welding wire grooves at the chuck ends 2 of each fixture 1, so that the broken ends of the two welding wires approach each other.

[0026] The connection end 3 of each fixture 1 is connected to the power cord, so that the two fixtures 1 form positive and negative electrodes during the butt joint welding of the welding wires; a telescopic spring 7 is connected between the lower side of the connection end 3 of the fixture 1 and the device base, and the central hole of the spring 7 allows the welding power cord to pass through, and the welding power cord is connected to the power supply through the welding switch 9.

[0027] As Figure 2As shown, the upper and lower ends of the telescopic spring 7 have inclined spring seats 8, such that the central axis of the spring 7 is inclined, and the distance between the lower ends of the two springs 7 is greater than the distance between the upper ends.

[0028] Each central lower bottom surface of the fixture 1 has a circular shell-shaped support socket 4. Below the support socket 4, there is a support rod 5. The upper end of the support rod 5 has a spherical head 6 that is cooperatively connected with the support socket 4. The support rod 5 can perform universal movement in any direction of up, down, left, and right around the support socket 4, and can move left and right in the spatial position while swinging up and down.

[0029] When the connection end 3 of the fixture is pressed downward, the spring 7 is compressed, the welding switch 9 is turned on, and the support rod 5 swings up and down around the support socket 4 and also swings in the left and right directions. The distance between the clamping ends 2 of the two fixtures 1 decreases, such that the two broken ends of the welding wire are in close contact and butt joint. The two electrodes and the two butt-jointed welding wires form a closed circuit, and the welding wire starts to melt and butt-weld relying on its own resistance heat.

[0030] After welding, the welding switch 9 is turned off, and the circuit is powered off; then, the clamping ends 2 of the two fixtures 1 are loosened, and the welded welding wire is taken out; finally, the spring 7 rebounds, and a welding process ends.

[0031] Embodiment 2: As Figure 4 shown, on the equipment base of the functional welding wire broken-end butt-joint device in the above Embodiment 1, there is another set of grinding wheels and a grinding tool switch 12 for the welding wire joint. As Figure 5 shown, the grinding wheels are two coaxially arranged in parallel. The diameter of the inner one is smaller than that of the outer one. The gap between the two grinding wheels 10 and 11 is the diameter 1.2 mm of a welding wire. When the joint of the welded welding wire is placed above the gap between the two grinding wheels 10 and 11, the grinding wheels grind the joint, such that the excess size at the joint is ground away, and the generated waste chips fall from the gap and fly inward individually, and will not fly to the face of the operator on the outside.

Claims

1. A multifunctional welding wire broken end butt joint device, comprising an equipment base, on which are two clamps (1) that do not contact each other; a clamp end (2) of each clamp (1) has a welding wire groove that can clamp the broken ends of the welding wire, so as to facilitate clamping the broken ends of the two welding wires; characterized in that: The connection end (3) of each clamp (1) is respectively connected to an electrode of a power source, so that the two clamps (1) constitute positive and negative electrodes when the welding wires are butt-welded; a telescopic spring (7) is connected between the lower side of the connection end (3) of the clamp (1) and the base of the device, and the upper and lower ends of the telescopic spring (7) have inclined spring seats (8), so that the central axis of the spring (7) is inclined, and the distance between the lower ends of the two springs (7) is greater than the distance between the upper ends; The central lower bottom surface of each clamp (1) has a support socket (4), and a support rod (5) is provided below the support socket (4). The support rod (5) can swing up and down around the support socket (4) and can also swing left and right. When the connecting ends (3) of the two clamps (1) are pressed downward, the distance between them gradually increases, and the distance between the clamp ends (2) of the two clamps (1) and the broken ends of the two welding wires gradually decreases. When the connecting ends (3) of the two clamps are pressed to the bottom, the broken ends of the two welding wires are in close contact; at this time, the welding switch (9) is turned on, the two electrodes and the broken ends of the two welding wires form a closed circuit, and the two broken ends of the welding wires begin to melt and butt-weld by their own resistance heat; After welding, the welding switch (9) is turned on and the circuit is powered off; then, the clamp end (2) of the clamp (1) is opened and the welded welding wire is taken out from the welding wire slot; finally, the spring (7) is popped up.

2. The multifunctional welding wire broken end butt joint device according to claim 1, characterized in that: The support socket (4) is in the shape of a round shell recessed in the clamp, and the upper end of the support rod (5) has a spherical column head (6) that is matched and connected to the support socket (4).

3. The multifunctional welding wire broken end butt joint device according to claim 1 or 2, characterized in that: The cross-sectional dimensions of the clamp (1) are much larger than the cross-sectional dimensions of the welding wire. The clamp (1) is made of brass. When the circuit is turned on, the welding wire heats up and melts, while the clamp heats up slightly and does not burn the hand.

4. The multifunctional welding wire broken end butt joint device according to claim 1 or 2, characterized in that: On the base of the equipment, there is another set of grinding wheels and a grinding tool switch (12) for welding wire joints; the grinding wheels are two coaxially arranged in parallel, the inner one has a smaller diameter than the outer one, and the gap between the two grinding wheels (10, 11) is the diameter of a welding wire.

5. The multifunctional welding wire broken end butt joint device according to claim 1 or 2, characterized in that: The inclined surfaces of the spring seats (8) at the upper and lower ends are parallel to each other, and the springs and the spring seats have the same size, ensuring that the two clamps can be kept basically horizontal when pressed to the bottom, and the welding wire grooves and the broken ends of the welding wires therein are basically in a straight line.

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