Device for improving double-wire gas shielded welding magnetic blowing fault

Abstract

The utility model relates to the technical field of welding equipment, and discloses a device for improving a double-wire gas shielded welding magnetic blow-out fault, which comprises contact type welding loop devices positioned on two sides above a double-wire welding loop, and the double-wire welding loop comprises a key pressing plate, a large copper bar, a ground wire A, a ground wire B and a drag chain, a cross beam of the upper contact type welding loop device is arranged above one side of the key pressing plate, the cross beam is connected with the key pressing plate through a crank mechanism, the key pressing plate is arranged in a bilateral symmetry mode along a jointed board welding seam, a bent copper plate is arranged at the bottom of the key pressing plate and connected with a large copper bar through a copper wire, and the tail end of the large copper bar is connected with a welding machine through a ground wire. And the magnetic field generated by the welding current is offset by using the symmetrical structure, so that the influence of the magnetic field on the welding arc is reduced.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically a device for improving magnetic blow faults in dual-wire gas shielded welding. Background Technology

[0002] Thin-plate welding is frequently used in the shipbuilding industry for building modules, flat sections, luxury cruise ships, and car carriers. Efficient thin-plate welding equipment is a key process for improving shipbuilding efficiency in shipyards. However, the dual-wire welding process used in shipyards suffered from magnetic blowout issues during development, forcing the use of single-wire welding. With the increasing number of orders on hand, developing a device to improve the magnetic blowout performance of dual-wire gas-shielded welding has become a top priority.

[0003] Document ZL202121790448 discloses a steel plate surfacing clamping device and a steel plate surfacing welding device. The steel plate surfacing clamping device includes a hydraulic cylinder, a lower pressure rod, a lower pressure plate, a connecting block, an upper pressure rod, a clamping shaft, and an upper pressure plate. Two lower pressure rods are symmetrically arranged, with the welding area between the two lower pressure rods. Four hydraulic cylinders are fixed at both ends of the bottom of the two lower pressure rods. The lower pressure plate is fixed at the top of the lower pressure rods. The connecting block is connected to the two lower pressure rods. Two upper pressure rods are symmetrically arranged, located above the lower pressure rods and arranged parallel to each other. The clamping shaft is fixed at both ends of the upper pressure rods and connected to the hydraulic cylinders. The upper pressure plate is fixed below the upper pressure rods and is arranged opposite to the lower pressure plate. The hydraulic cylinder clamps the steel plate between the upper and lower pressure plates through the upper pressure rods. With this structure, during welding, the welding current easily exerts a pulling effect on the welding arc, affecting the welding quality.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the aforementioned problems, this utility model discloses a device for improving magnetic blow faults in dual-wire gas shielded welding. It facilitates on-site modification and future maintenance, and utilizes a symmetrical structure to counteract the magnetic field generated by the welding current, thereby reducing the influence of the magnetic field on the welding arc.

[0006] The technical solution of this utility model is as follows: a device for improving the magnetic blow fault in double-wire gas shielded welding, including contact welding circuit devices on both sides above the double-wire welding circuit. The double-wire welding circuit includes a key plate, a large copper busbar, ground wire A, ground wire B and a drag chain. A crossbeam of the upper contact welding circuit device is provided above one side of the key plate. The crossbeam is connected to the key plate through a crank mechanism. The key plate is arranged symmetrically on both sides along the weld seam of the splice plate. A bent copper plate is provided at the bottom of the key plate. The bent copper plate is connected to the large copper busbar through a copper wire. The end of the large copper busbar is connected to the welding machine through a ground wire.

[0007] By adopting the above technical solution, the piano key pressure plate is arranged symmetrically along the weld seam of the spliced ​​plate. The welding current returns to the welding machine from the weld seam of the spliced ​​steel plate through the copper plate bent at the bottom of the piano key pressure plate, copper wire, large copper busbar, welding machine ground wire and other low resistance copper conductors, forming a repulsive magnetic field of the same pole near the arc, thereby reducing the pulling effect of the magnetic field on the weld seam.

[0008] Preferably, the key pressure plates are arranged symmetrically along the weld seam of the splice plate, and there are several key pressure plates. The key pressure plates are arranged symmetrically in the middle of the crossbeam in a longitudinal arrangement.

[0009] By adopting the above technical solution, the piano key pressure plate always presses the welded steel plate firmly.

[0010] Preferably, the large copper busbar is branched with copper wires, each copper wire is connected to a bent copper plate, each bent copper plate is located below each key pressure plate, the large copper busbar and the key pressure plate are placed in the same direction and are symmetrically arranged, the large copper busbar is installed on the inside of the crossbeam, and is symmetrically arranged in the inner length direction, and its length is the same as the length of the crossbeam.

[0011] By adopting the above technical solution, the large copper busbar is connected by copper wires and bent copper plates, which can generate a repulsive magnetic field around the welding arc.

[0012] Preferably, the large copper busbars are located above both sides of the piano key pressure plate, and the ends of the large copper busbars on both sides are connected to ground wire A and ground wire B, respectively. Ground wire A is connected to welding machine A through a cable chain, and ground wire B is connected to welding machine B through a cable chain.

[0013] By adopting the above technical solution, the large copper busbar transmits the current from the copper wire to welding machine A through the ground wire and cable chain, preventing the current from being transmitted to other machines and causing damage to them.

[0014] Preferably, the bent copper plate includes a long support side and a short support side. The long support side is pressed against the bottom of the piano key pressure plate, and the short support side is perpendicular to the long support side. The short support side is connected to a large copper busbar through a terminal at one end of a copper wire. The large copper busbar is connected to an angle steel through an insulating pad. The angle steel is welded and fixed to the vertical surface inside the crossbeam, and the large copper busbar is fixed to the vertical surface of the angle steel support side.

[0015] By adopting the above technical solution, an insulating pad is placed between the large copper busbar and the angle steel. This can prevent accidents when the welding current is conducted through the angle steel to the beam and other conductor structures during welding.

[0016] Preferably, the bottom of the bent copper plate is located on the welded steel plate, the weld of the welded steel plate is placed on top of the copper support, the copper support is located between the piano key pressure plates, and a double-wire welding clamp is provided between the piano key pressure plates above the copper support. The double-wire welding clamp is suspended by a trolley at the top of the crossbeam.

[0017] By adopting the above technical solution, the double-wire welding clamp is suspended on the top carriage and can also be finely adjusted in both vertical and horizontal directions, which can ensure that the welding wire is aligned with the weld seam between the steel plates being welded.

[0018] Preferably, the key pressure plate is connected to the crossbeam via a crank mechanism. The crank mechanism includes a connecting rod and a clamping cylinder. The connecting rod is in a downward V-shape. The middle part of the connecting rod is rotatably connected to the bottom of the crossbeam. The end of the V-shape is connected to the clamping cylinder, which is located on the crossbeam. The beginning of the V-shape is connected to the key pressure plate.

[0019] By adopting the above technical solution, the crank mechanism is extended and retracted by the clamping cylinder. The middle part of the crank mechanism rotates around the position connected to the crossbeam, thereby causing the key pressure plate at the end of the crank mechanism to move up and down.

[0020] The advantages of this utility model are as follows: 1. This utility model uses a piano key pressure plate arranged symmetrically along the weld seam of the spliced ​​plate. A bent copper plate is provided at the bottom of the piano key pressure plate. The welding current returns to the welding machine from the weld seam of the spliced ​​steel plate through the bent copper plate at the bottom of the piano key pressure plate, copper wire, large copper busbar, welding machine ground wire and other low-resistance copper conductors. This forms a repulsive magnetic field near the arc, thereby reducing the pulling effect of the magnetic field on the weld seam and effectively ensuring the welding quality.

[0021] 2. This utility model sets an insulating pad between the large copper busbar and the angle steel to prevent accidents when the welding current is conducted to the beam and other conductor structures through the angle steel. By setting the insulating pad, the transmission of current can be effectively prevented and other structures can be protected.

[0022] 3. The structure of this utility model is reasonable and easy to manufacture. It makes full use of the magnetic field repulsion principle formed by the welding current to provide a stable magnetic field for the double-wire welding arc, thereby ensuring the welding quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a partial schematic diagram of the welding device of this utility model;

[0025] Figure 3 This is a schematic diagram of the end face of the upper contact welding circuit of this utility model;

[0026] Figure 4 This utility model Figure 3 A structural schematic diagram of enlarged view of part A in the middle;

[0027] Figure 5 This is a schematic diagram of the magnetic field of the double-wire welding current of this utility model.

[0028] The components are: 1. Crossbeam, 2. Large copper busbar, 3. Keyplate, 4. Copper wire, 5. Welding machine A, 6. Welding machine B, 7. Ground wire A, 8. Ground wire B, 9. Cable chain, 10. Welded steel plate, 11. Clamping cylinder, 12. Double wire welding clamp, 13. Angle steel, 14. Insulating pad, 15. Bending copper plate, 16. Connecting rod, 17. Copper support. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] like Figure 1-5 As shown, a device for improving magnetic blow faults in dual-wire gas shielded welding includes contact welding circuit devices on both sides above the dual-wire welding circuit. The dual-wire welding circuit includes a key plate 3, a large copper busbar 2, a ground wire A7, a ground wire B8, and a drag chain 9. A crossbeam 1 of the upper contact welding circuit device is provided above one side of the key plate 3. The crossbeam 1 is connected to the key plate 3 through a crank mechanism. The key plate 3 is arranged symmetrically along the weld seam of the spliced ​​plate. A bent copper plate 15 is provided at the bottom of the key plate 3. The bent copper plate 15 is connected to the large copper busbar 2 through a copper wire 4. The end of the large copper busbar 2 is connected to the welding machine through a ground wire. The key plate 3 is arranged symmetrically along the weld seam of the spliced ​​plate. The welding current returns to the welding machine from the weld seam of the spliced ​​steel plate 10 through the low-resistance copper conductors such as the bent copper plate 15 at the bottom of the key plate 3, the copper wire 4, the large copper busbar 2, and the welding machine ground wire. A repulsive magnetic field of the same pole is formed near the arc, thereby reducing the traction effect of the magnetic field on the weld seam.

[0031] The key pressure plate 3 is arranged symmetrically along the weld seam of the splicing plate. The key pressure plate 3 has several pieces and is arranged symmetrically in the middle of the crossbeam 1 in a longitudinal manner. The key pressure plate 3 always presses the spliced ​​steel plate 10 tightly.

[0032] The large copper busbar 2 is branched and connected to copper wires 4. Each copper wire 4 is connected to a bent copper plate. Each bent copper plate 15 is located below each key pressure plate 3. The large copper busbar 2 and the key pressure plate 3 are placed in the same direction and are arranged symmetrically. The large copper busbar 2 is installed on the inner side of the crossbeam 1 and is arranged symmetrically in the inner length direction. Its length is the same as the length of the crossbeam 1. The large copper busbar 2 is connected to the bent copper plate 15 through the copper wires 4, which can form a repulsive magnetic field around the welding arc.

[0033] The large copper busbar 2 is located above both sides of the piano key pressure plate 3. The ends of the large copper busbar 2 on both sides are connected to ground wire A7 and ground wire B8 respectively. Ground wire A7 is connected to welding machine A5 through drag chain 9, and ground wire B8 is connected to welding machine B6 through drag chain 9. The large copper busbar 2 transmits the current from the copper wire 4 to welding machine A5 through ground wire and drag chain 9, preventing the current from being transmitted to other machines and causing damage to them.

[0034] The bent copper plate 15 includes a long support side and a short support side. The long support side is pressed against the bottom of the piano key pressure plate 3, and the short support side is perpendicular to the long support side. The short support side is connected to the large copper busbar 2 through the terminal of one end of the copper wire 4. The large copper busbar 2 is connected to the angle steel 13 through the insulating pad 14. The angle steel 13 is welded and fixed to the vertical surface of the inner side of the crossbeam 1. The large copper busbar 2 is fixed to the vertical surface of the support side of the angle steel 13. An insulating pad 14 is set at the copper and iron contact surface at the connection between the large copper busbar 2 and the angle steel 13. This can prevent accidents when the welding current is conducted to the crossbeam 1 and other conductor structures through the angle steel 13 during welding.

[0035] The bent copper plate 15 is fixed to the key pressure plate 3 by countersunk screws. The bottom of the bent copper plate 15 is located on the welded steel plate 10. The weld of the welded steel plate 10 is located on the top of the copper support 17. The copper support 17 is located between the key pressure plates 3. A double-wire welding clamp 12 is provided between the key pressure plates 3 above the copper support 17. The double-wire welding clamp 12 is suspended by the top carriage of the crossbeam 1. The double-wire welding clamp 12 is suspended on the top carriage and can also have fine adjustment in the vertical and horizontal directions, so as to ensure that the welding wire is aligned with the weld between the welded steel plates 10.

[0036] The key pressure plate 3 is connected to the crossbeam 1 via a crank mechanism. The crank mechanism includes a connecting rod 16 and a clamping cylinder 11. The connecting rod 16 is in a downward V-shape. The middle part of the connecting rod 16 is rotatably connected to the bottom of the crossbeam 1, and the end of the V-shape is connected to the clamping cylinder 11. The clamping cylinder 11 is located on the crossbeam 1, and the first end of the V-shape is connected to the key pressure plate 3. The crank mechanism is extended and retracted by the clamping cylinder 3. The middle part of the crank mechanism rotates around the position connected to the crossbeam 1, thereby causing the key pressure plate 3 at the end of the crank mechanism to move up and down.

[0037] Working principle: The clamping cylinder 11 drives the connecting rod 16, which in turn drives the piano key pressure plate 3 to press the welded steel plate 10. The top carriage moves on the crossbeam, and the double-wire welding clamp 12 welds the weld seam of the welded steel plate 10. At the same time, the welding current generated during welding flows from the bent copper plate 15 at the bottom of the piano key pressure plate 3 through the copper wire 4 to the large copper busbar 2 and is finally released through the ground wire.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A device for improving magnetic blow faults in dual-wire gas shielded welding, comprising contact welding circuit devices on both sides above the dual-wire welding circuit, wherein the dual-wire welding circuit includes a key plate, a large copper busbar, ground wire A, ground wire B, and a cable chain, and a crossbeam of the upper contact welding circuit device is provided above one side of the key plate, the crossbeam being connected to the key plate via a crank mechanism, characterized in that: The piano key pressure plates are arranged symmetrically along the weld seam of the panel. The bottom of the piano key pressure plates is provided with a bent copper plate. The bent copper plate is connected to a large copper busbar through a copper wire. The end of the large copper busbar is connected to the welding machine through a ground wire.

2. The device for improving magnetic blow fault in dual-wire gas shielded welding according to claim 1, characterized in that: The piano key pressure plate consists of several pieces, which are arranged symmetrically in a longitudinal direction in the middle of the crossbeam.

3. The device for improving magnetic blow fault in dual-wire gas shielded welding according to claim 1, characterized in that: The large copper busbar is branched and connected to copper wires. Each copper wire is connected to a bent copper plate. Each bent copper plate is located below each key pressure plate. The large copper busbar and the key pressure plates are placed in the same direction and are arranged symmetrically. The large copper busbar is installed on the inside of the crossbeam and is arranged symmetrically in the length direction of the inside. Its length is the same as the length of the crossbeam.

4. The device for improving magnetic blow fault in dual-wire gas shielded welding according to claim 1, characterized in that: The large copper busbars are located above the two sides of the piano key pressure plate. The ends of the two large copper busbars are connected to ground wire A and ground wire B, respectively. Ground wire A is connected to welding machine A via a cable chain, and ground wire B is connected to welding machine B via a cable chain.

5. The device for improving magnetic blow fault in dual-wire gas shielded welding according to claim 1, characterized in that: The bent copper plate includes a long support side and a short support side. The long support side is pressed against the bottom of the piano key pressure plate. The short support side is perpendicular to the long support side. The short support side is connected to a large copper busbar through a terminal at one end of a copper wire. The large copper busbar is connected to an angle steel through an insulating pad. The angle steel is welded and fixed to the vertical surface inside the crossbeam. The large copper busbar is fixed to the vertical surface of the angle steel support side.

6. The device for improving magnetic blow fault in dual-wire gas shielded welding according to claim 1, characterized in that: The bottom of the bent copper plate is located on the welded steel plate, the weld of the welded steel plate is placed on top of the copper support, the copper support is located between the piano key pressure plates, and a double-wire welding clamp is provided between the piano key pressure plates above the copper support. The double-wire welding clamp is suspended by a trolley on the top of the crossbeam.

7. The device for improving magnetic blow fault in dual-wire gas shielded welding according to claim 1, characterized in that: The key pressure plate is connected to the crossbeam via a crank mechanism. The crank mechanism includes a connecting rod and a clamping cylinder. The connecting rod is in a downward V-shape. The middle part of the connecting rod is rotatably connected to the bottom of the crossbeam. The end of the V-shape is connected to the clamping cylinder, which is located on the crossbeam. The head end of the V-shape is connected to the key pressure plate.

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