Single-power-supply double-welding-gun surfacing welding device

Abstract

The single-power-supply double-welding-gun surfacing device comprises conducting rods, a flux tee joint and a contact tube, the flux tee joint is arranged on the lower portions of the conducting rods in a sleeving mode, the contact tube is installed at the lower ends of the conducting rods, the two conducting rods are arranged side by side, the upper ends of the conducting rods, a rectangular connector and flexible wire guide tubes are sequentially connected, and the two flexible wire guide tubes are connected with a connecting base. The connecting seat is fixedly connected with the wire feeder, and a welding wire penetrates through a through hole of the connecting seat to enter the flexible wire guide pipe; and the distance between the two rectangular joints which are arranged in parallel is adjustable. The single-power-source double-welding-gun double-wire parallel connection device has the advantages of being simple in structure, reasonable in design, easy to operate and easy to achieve, achieving a single-power-source double-welding-gun double-wire parallel connection structure by adopting the flexible wire guide pipe and connecting the two rectangular connectors through the double-thread screw, achieving the purpose of improving the surfacing speed and efficiency of a single welding source through the double-wire non-common-molten-pool surfacing technology, and being reliable in technical effect.

Description

Technical Field

[0001] The invention relates to a surfacing welding device, in particular to a single-power-supply double-welding-gun surfacing welding device, belonging to the technical field of mechanical engineering fusion welding. Background Art

[0002] In the existing wire electrode cladding device, a single power source, a single gun, and a single wire are generally used for welding. According to the process requirements of the cladding layer, either a flux-cored wire or a solid wire can be used. In order to improve the cladding efficiency, reduce the penetration depth, and reduce the melting amount and dilution rate of the parent material, the polarity of the welding power source usually adopts a DC positive polarity, and a lower welding current, a higher welding voltage, a higher welding speed, and a lower welding line energy. However, the smaller welding current makes the cladding efficiency lower, and the cladding area and the quality of the deposited metal of the workpieces such as flat plates, rollers, hydraulic cylinders, and tubes that generally require surface wear-resistant cladding and pressure vessels and tube sheets that require surface corrosion-resistant metal cladding are much larger than the butt welds. Therefore, the surface cladding of the workpiece is usually heavy and time-consuming, and improving the cladding speed and efficiency has become a prominent problem that needs to be solved in the industry. Summary of the invention

[0003] In order to overcome the shortcomings of the existing surfacing welding technology, such as large workload and long time consumption, the present invention provides a single-power-source dual-welding-gun surfacing welding device.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a single-power supply double-welding gun surfacing device, comprising a conductive rod, a flux tee, and a conductive nozzle, the flux tee is sleeved on the lower part of the conductive rod, the conductive nozzle is installed at the lower end of the conductive rod, the two conductive rods are arranged in parallel, the upper ends of the conductive rods, the rectangular joints, and the flexible wire guide tubes are connected in sequence, the two flexible wire guide tubes are connected to the connecting seat, the connecting seat is fixedly connected to the wire feeder, the welding wire passes through the through hole of the connecting seat and enters the flexible wire guide tube; the distance between the two parallel rectangular joints is adjustable.

[0005] The two rectangular joints are connected by a double-headed screw rod, and the distance between the two rectangular joints is adjusted by rotating the double-headed screw rod.

[0006] One end of the double-headed screw is a left-handed thread, and the other end is a right-handed thread; the left-handed screw and the right-handed screw are respectively connected to two rectangular joints, and the double-headed screw located between the two rectangular joints is rotated to adjust the distance between the two rectangular joints.

[0007] Furthermore, the upper end of the flexible wire guide tube is fixedly connected to the connecting seat via a clamp.

[0008] The connecting seat is in an inverted L-shape, and two through holes are arranged at the upper end of the connecting seat corresponding to the wire feeder and are respectively connected to the through holes of the two flexible wire guide tubes.

[0009] The wire feeding wheel of the wire feeding machine simultaneously feeds out two welding wires, and the two welding wires respectively pass downward through the double holes of the connecting seat and then enter into two flexible wire guide tubes, and pass through the rectangular joint, the conductive rod and the conductive nozzle in sequence.

[0010] The wire feeder uses a single wire feeding wheel to synchronously feed two welding wires.

[0011] The welding cables are connected via rectangular connectors.

[0012] The beneficial effects of the present invention are simple structure, reasonable design, simple operation and easy implementation. A flexible wire guide tube is adopted to connect two rectangular joints through a double-head screw to realize a single power source, double welding gun and double wire parallel structure. The double-wire non-eutectic pool surfacing process is utilized to achieve the purpose of improving the surfacing speed and efficiency of a single welding power source, and the technical effect is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a single-power-supply dual-welding-gun surfacing device of the present invention.

[0014] Figure 2 yes Figure 1 Left view of .

[0015] Figure 3 It is a schematic diagram of the rectangular joint structure in the present invention.

[0016] In the figure: 1. connecting seat, 2. chuck, 3. flexible wire guide tube, 4. rectangular joint, 5. double-headed screw, 6. conductive rod, 7. flux tee, 8. conductive nozzle, 9. wire feeder, 10. wire feeding wheel. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, those skilled in the art should be aware that the present invention is not limited to the specific embodiments listed, and all embodiments should be included in the protection scope of the present invention as long as they conform to the spirit of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "left", "right", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing or simplifying the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", and "seal" should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection, a direct connection, an indirect connection, or an integral connection; it can be a mechanical connection, an indirect connection through an intermediate medium, or a communication between the two components. The seal can be an oil seal, a packing seal, or other forms of seals. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See attached Figure 1-3 The present invention discloses a single-power-supply dual-welding-gun surfacing device, comprising a conductive rod 6, a flux tee 7, and a conductive nozzle 8. The flux tee 7 is mounted on the lower part of the conductive rod 6, and the conductive nozzle 8 is installed on the lower end of the conductive rod 6. Two conductive rods 6 are arranged in parallel, and the upper ends of the conductive rods 6, the rectangular joints 4, and the flexible wire guide tubes 3 are connected in sequence. The two flexible wire guide tubes 3 are connected to the connecting seat 1, and the connecting seat 1 is fixedly connected to the wire feeder 9; the welding wire passes through the through hole of the connecting seat 1 and enters the flexible wire guide tube 3. The distance between the two parallel rectangular joints 4 is adjustable.

[0021] The two rectangular joints 4 are connected by a double-headed screw 5. The double-headed screw 5 is rotated to adjust the lateral distance between the two rectangular joints 4 to form two independent surfacing molten pools.

[0022] Furthermore, one end of the double-headed screw 5 is a left-handed thread, and the other end is a right-handed thread; the left-handed screw and the right-handed screw are respectively connected to the two rectangular joints 4, and the double-headed screw 5 located between the two rectangular joints 4 is rotated to adjust the distance between the two rectangular joints 4. Preferably, the part of the double-headed screw 5 located between the two rectangular joints 4 is a polygonal structure, which is convenient for tools such as a wrench to rotate the double-headed screw 5.

[0023] The upper end of the flexible wire guide tube 3 is fixedly connected to the connecting seat 1 through the clamp 2.

[0024] The connecting seat 1 is in an inverted L-shape, and two through holes are arranged at the upper end of the connecting seat 1 corresponding to the wire feeder and are respectively connected to the through holes of the two flexible wire guide tubes 3 .

[0025] The wire feeding wheel 10 of the wire feeding machine 9 feeds out two welding wires synchronously, and the two welding wires respectively pass through the double holes of the connecting seat 1 downwards and enter the two flexible wire guide tubes 3, and then pass through the rectangular joint 3, the conductive rod 6, and the conductive nozzle 8 in sequence. Preferably, the wire feeding machine 9 uses a single wire feeding wheel 10 to feed out two welding wires synchronously.

[0026] The welding cable is connected via a rectangular connector 4 .

[0027] If the existing surfacing process uses a 3.2mm diameter welding wire, a lower welding current of 300-500A, and a higher welding arc voltage (28-34V). Applying the technical solution of the present invention, after adopting a non-combined surfacing process with two 3.2mm diameter welding wires in parallel, each welding wire still uses the above-mentioned smaller welding current, and the total surfacing current of the welding power supply is doubled. Due to the non-combined surfacing pools of the two welding wires, two surfacing molten pools identical to the original surfacing process are formed, and the size, volume and temperature of the two molten pools are basically the same as the original process. Therefore, a single large-volume surfacing molten pool will not be formed, and the molten pool metal will not flow or overheat to affect the organization and mechanical properties of the surfacing layer and the heat-affected zone of the parent material. Under the premise of ensuring the surfacing quality, the present invention can increase the surfacing speed to twice that of the existing process.

[0028] The single-power source dual-welding gun surfacing device of the present invention adopts a flexible wire guide tube, connects two rectangular joints through a double-head screw to realize a single-power source dual-welding gun dual-wire parallel structure, and utilizes a double-wire non-eutectic pool surfacing process to achieve the same welding current, welding line energy, base material dilution rate, surfacing layer and heat-affected zone metallographic structure and mechanical properties of each single welding gun-molten pool welding system in parallel as the original single power source and single-wire surfacing process; the total surfacing current of a single welding power source can be increased by about one time, thereby achieving the purpose of doubling the surfacing speed and efficiency of a single welding power source.

[0029] The single-power source dual-welding gun surfacing device of the present invention adopts a single-power source dual-welding gun dual-wire parallel non-combined molten pool surfacing method, and utilizes a dual-wire non-combined molten pool surfacing process to achieve the same welding current, welding line energy, parent material dilution rate, surfacing layer and heat-affected zone metallographic structure and mechanical properties of each single welding gun-molten pool welding system in parallel as the original single power source and single-wire surfacing process, thereby increasing the total surfacing current of a single welding power source by about one time, thereby achieving the purpose of doubling the surfacing speed and efficiency of a single welding power source.

[0030] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the claims of this patent.

Claims

1. A single power source dual welding gun surfacing device, comprising a conductive rod, a flux tee, and a conductive nozzle, wherein the flux tee is sleeved on the lower part of the conductive rod, and the conductive nozzle is installed at the lower end of the conductive rod, and is characterized in that: Two conductive rods are arranged in parallel, the upper ends of the conductive rods, the rectangular joints, and the flexible wire guide tubes are connected in sequence, the two flexible wire guide tubes are connected to the connecting seat, the connecting seat is fixedly connected to the wire feeder, and the welding wire passes through the through hole of the connecting seat and enters the flexible wire guide tube; the distance between the two parallel rectangular joints is adjustable.

2. According to the single power source dual welding gun surfacing device of claim 1, it is characterized by: The two rectangular joints are connected by a double-headed screw rod, and the distance between the two rectangular joints is adjusted by rotating the double-headed screw rod.

3. According to claim 2, the single power source dual welding gun surfacing device is characterized in that: One end of the double-headed screw is a left-handed thread, and the other end is a right-handed thread; the left-handed screw and the right-handed screw are respectively connected to two rectangular joints, and the double-headed screw located between the two rectangular joints is rotated to adjust the distance between the two rectangular joints.

4. The single power source dual welding gun surfacing device according to claim 3 is characterized in that: The upper end of the flexible wire guide tube is fixedly connected to the connecting seat through a clamp.

5. The single power source dual welding gun surfacing device according to claim 4 is characterized in that: The connecting seat is in an inverted L-shape, and two through holes are arranged at the upper end of the connecting seat corresponding to the wire feeder and are respectively connected to the through holes of the two flexible wire guide tubes.

6. The single power source dual welding gun surfacing device according to claim 5 is characterized in that: The wire feeding wheel of the wire feeding machine simultaneously feeds out two welding wires, and the two welding wires respectively pass downward through the double holes of the connecting seat and then enter into two flexible wire guide tubes, and pass through the rectangular joint, the conductive rod and the conductive nozzle in sequence.

7. The single power source dual welding gun surfacing device according to claim 1 is characterized in that: The wire feeder uses a single wire feeding wheel to synchronously feed two welding wires.

8. The single power source dual welding gun surfacing device according to claim 1 is characterized in that: The welding cables are connected via rectangular connectors.

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