Welding flux supply device for automatic submerged arc welding

Abstract

The utility model discloses a welding flux supply device for automatic submerged arc welding. According to an existing submerged automatic arc welding working procedure, a welder continuously observes a welding flux hopper in the welding process, welding flux is repeatedly supplemented, and the production efficiency and the welding quality are seriously improved. The welding machine comprises a welding machine body and a material conveying assembly, a welding wire reel (4), a wire feeding mechanism (7) and a welding flux hopper (5) of the material conveying assembly are fixed on the welding machine body, a welding wire (9) is wound on the welding wire reel and extends out of a contact tube (8) through the wire feeding mechanism, and welding flux in the welding flux hopper of the material conveying assembly flows to the contact tube of a welding gun from a bottom feeding pipe (6); the material conveying assembly comprises a welding flux hopper, a welding machine drying assembly (11) and a dust recycling assembly (13), and the welding machine drying assembly is communicated with the welding flux hopper through a conveying pipeline (10b); and the dust recovery assembly is communicated with the welding flux hopper through a recovery pipeline (10a). The submerged arc automatic welding flux supply device is used for submerged arc automatic welding flux supply.

Description

Technical Field

[0001] The utility model relates to the field of welding equipment, in particular to a flux supply device for submerged arc automatic welding. Background Art

[0002] Submerged arc welding is a welding method in which the arc burns under the flux layer. The welding depth and welding efficiency are much higher than manual arc welding. It has many advantages such as no arc light, less smoke and dust, and good labor protection. This makes it the main welding method in the production of important steel structures such as pressure vessels, pipe section manufacturing, box beams and columns.

[0003] The welding materials used in submerged arc automatic welding are mainly welding wire and flux. Flux is a granular welding material that can melt to form slag and gas during welding. It is a substance that protects and metallurgically treats molten metal. Drying treatment can reduce the moisture in the flux, reduce or eliminate the harm of hydrogen to the weld metal, and improve the welding quality. The existing submerged arc automatic welding work procedure is often: the flux is first dried in a drying furnace in the welding material warehouse, and then transferred to the production workshop welding machine through a container for standby. During the welding process, the welder constantly observes the flux hopper and repeatedly replenishes the flux. The entire welding process is complicated and the flux is inevitably contaminated by water vapor during transportation, which seriously affects the production efficiency and the improvement of welding quality; at the same time, due to the large size of some workpieces, the entire operation process when the welder replenishes the flux is located at a higher spatial position, which has a certain risk of high-altitude operation.

[0004] Therefore, a flux supply device for submerged arc automatic welding is needed. Utility Model Content

[0005] The utility model aims to provide a flux supply device for submerged arc automatic welding in view of the problems existing in the prior art.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A flux supply device for submerged arc automatic welding, comprising a welding machine body and a feeding assembly, wherein a welding wire reel, a wire feeding mechanism and a flux hopper of the feeding assembly are fixed on the welding machine body, a welding wire is wound on the welding wire reel and extends from a conductive nozzle through the wire feeding mechanism, and the flux in the flux hopper of the feeding assembly flows from a bottom feeding pipe to the conductive nozzle of a welding gun;

[0008] The feeding assembly includes a flux hopper, a welding machine drying assembly and a dust recovery assembly, and the welding machine drying assembly is connected with the flux hopper through a conveying pipeline;

[0009] The dust recovery component is connected to the flux hopper through a recovery pipeline.

[0010] The flux supply device for submerged arc automatic welding, the welding machine body comprises a mobile welding vehicle, a vertical column and a movable crossbeam, the vertical column is fixed on the mobile welding vehicle, and the movable crossbeam is fixed to the vertical column.

[0011] The flux supply device for submerged arc automatic welding, the movable crossbeam includes a main pipe, a sleeve is fixed to the front end of the main pipe, a first extension tube is inserted into the main pipe and slidably cooperates with the main pipe, and a second extension tube is inserted into the first extension tube and slidably cooperates with the first extension tube.

[0012] The flux supply device for submerged arc automatic welding, the dust recovery component is an electric dust collector or a dust filter bag.

[0013] The flux supply device for submerged arc automatic welding, the feeding assembly also includes an automatic loading and unloading control device, the upper and lower parts of the flux hopper are respectively equipped with limit sensors, the feeding pipe is equipped with a unloading switch, and the flux drying device is equipped with a suction machine.

[0014] The flux supply device for submerged arc automatic welding, the limit sensor is an infrared sensor.

[0015] The flux supply device for submerged arc automatic welding, the feed switch is an electromagnetic or pneumatic switch,

[0016] The flux supply device for submerged arc automatic welding, the suction machine is an electric or pneumatic suction machine.

[0017] The flux supply device for submerged arc automatic welding, the loading and unloading automatic control device are electrically connected to the limit sensor, the unloading switch and the suction machine. Beneficial Effects

[0018] 1. The utility model connects the flux hopper, the flux drying component and the dust recovery component through a closed pipeline to form a feeding component, and delivers the dried flux to the welding position, thereby reducing the moisture in the flux, reducing or eliminating the harm of hydrogen to the weld metal, and improving the welding quality of submerged arc automatic welding.

[0019] 2. The device of the utility model shortens the flux dragging distance during welding, and continuously delivers flux to the welding machine hopper through the automatic loading and unloading control device, thereby reducing the labor intensity of the operator and the risk of high-altitude operations.

[0020] 3. The utility model device absorbs and recovers the dust generated in the process of flux supply through the dust recovery component, reduces the dust pollution in the welding process and improves the working environment of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model device;

[0022] In the figure: 1. Mobile welding vehicle; 2. Vertical column; 4. Wire reel; 5. Flux hopper; 6. Feed pipe; 7. Wire feeding mechanism; 8. Conductive nozzle; 9. Welding wire; 10a. Recovery pipe; 10b. Delivery pipe; 11. Welding machine drying assembly; 12. Suction machine; 13. Dust recovery assembly; 14. Automatic loading and unloading control device; 31. Casing; 32. Main pipe; 33. First extension pipe; 34. Second extension pipe. DETAILED DESCRIPTION

[0023] Reference Figure 1 A flux supply device for submerged arc automatic welding, which comprises a welding machine body and a feeding assembly, wherein a welding wire reel 4, a wire feeding mechanism 7 and a flux hopper 5 of the feeding assembly are fixed on the welding machine body, a welding wire 9 is wound on the welding wire reel and extends from a conductive nozzle 8 through the wire feeding mechanism 7, and the flux in the flux hopper of the feeding assembly flows from a bottom feeding pipe 6 to the conductive nozzle of the welding gun;

[0024] The welding wire reel is connected to the first elongated tube through a bracket, the wire feeding mechanism is fixed to the end of the second elongated tube, and the flux hopper is fixed to the second elongated tube through the bracket;

[0025] The feeding assembly includes a flux hopper, a welding machine drying assembly 11 and a dust recovery assembly 13, and the welding machine drying assembly is connected to the flux hopper through a conveying pipe 10b;

[0026] The dust recovery assembly is connected to the flux hopper via a recovery pipe 10a.

[0027] The flux supply device for submerged arc automatic welding, the welding machine body comprises a mobile welding vehicle 1, a vertical column 2 and a movable crossbeam, the vertical column is fixed on the mobile welding vehicle, and the movable crossbeam is fixed to the vertical column.

[0028] The flux supply device for submerged arc automatic welding, the movable crossbeam includes a main pipe 32, a sleeve 31 is fixed to the front end of the main pipe, a first extension pipe 33 is inserted into the main pipe and slidably cooperates with the main pipe, a second extension pipe 34 is inserted into the first extension pipe and slidably cooperates with the first extension pipe, the sleeve is fixed to the main pipe, and the sleeve is used for the lead-in of the conveying pipe and the recovery pipe.

[0029] The flux supply device for submerged arc automatic welding, the dust recovery component is an electric dust collector or a dust filter bag.

[0030] The feeding assembly also includes an automatic upper and lower material control device 14, the upper and lower parts of the flux hopper 5 are respectively equipped with limit sensors, the feeding pipe 6 is equipped with a material discharge switch, the flux drying device is equipped with a suction machine 12, and the automatic control device 13 is electrically connected to the limit sensors, the material discharge switch and the suction machine 12. During use, the upper and lower limit sensors of the flux hopper 5 feed back signals to the automatic control device 13 to control the suction machine 12 to work or stop, so as to achieve the proper amount of flux in the flux hopper 5 and ensure the continuous welding operation. The automatic control device 14 realizes the automation of the supply of flux during welding by controlling the material discharge switch of the feeding pipe 6.

[0031] The flux supply device for submerged arc automatic welding, the limit sensor is an infrared sensor.

[0032] The flux supply device for submerged arc automatic welding, the feed switch is an electromagnetic or pneumatic switch,

[0033] The flux supply device for submerged arc automatic welding, the suction machine is an electric or pneumatic suction machine.

[0034] The flux supply device for submerged arc automatic welding, the loading and unloading automatic control device are electrically connected to the limit sensor, the unloading switch and the suction machine.

[0035] During welding operation, the movable welding vehicle 1 is controlled to move to a suitable horizontal position along a specific track, and the movable crossbeam 3 is adjusted to a suitable working height according to the size of the workpiece to be welded; the welding wire 9 is placed on the welding wire reel 4 and extends from the conductive nozzle 8 through the wire feeding mechanism 7; the flux is dried by the welding machine drying component 11 and transported to the flux hopper 5 through the suction machine 12 through the pipeline 10b, and the flux flows from the feeding pipe 6 at the bottom of the flux hopper 5 to the conductive nozzle 8 of the welding gun; the dust generated during the flux supply process is transported from the upper part of the flux hopper 5 to the dust recovery component 13 through the pipeline 10a, and the dust recovery component 13 absorbs and recovers the dust through the filter.

[0036] A mobile welding trolley is arranged on the welding machine body and can move horizontally along a specific track. A column is vertically arranged on the mobile welding trolley, and a movable crossbeam is arranged on the column, which can be vertically adjusted to a suitable height according to the size of the workpiece to be welded. The bottom of the flux hopper is connected to the feeding pipe, and the outlet of the feeding pipe is arranged at the conductive nozzle of the welding gun. The structure and working method of the welding wire reel, the wire feeding mechanism and the conductive nozzle are all prior arts. This device only fixes the wire feeding reel at the first extension tube through a bracket, and fixes the wire feeding structure at the second extension tube for convenient position adjustment. The flux drying assembly and the dust recovery assembly can be placed in suitable positions according to the needs of the welding trolley. The drying assembly dries the flux by electric heating, and the dust recovery assembly absorbs and recovers the dust generated in the process of flux supplying through a filter. The flux hopper, the flux drying assembly and the dust recovery assembly are connected in a closed manner through a pipeline to form the feeding assembly. This device can continuously deliver preheated and dried flux to the welding machine hopper, thereby reducing the moisture in the flux, reducing or eliminating the harm of hydrogen to the weld metal, improving the welding quality, and at the same time shortening the flux dragging distance during welding and reducing dust pollution during welding, improving the working environment, and reducing the labor intensity of the operator and the risk of high-altitude operations.

Claims

1. A flux supply device for submerged arc automatic welding, characterized in that: The welding machine comprises a welding machine body and a feeding assembly, wherein a welding wire reel, a wire feeding mechanism and a flux hopper of the feeding assembly are fixed on the welding machine body, the welding wire is wound on the welding wire reel and extends from the conductive nozzle through the wire feeding mechanism, and the flux in the flux hopper of the feeding assembly flows from the bottom feeding pipe to the conductive nozzle of the welding gun; The feeding assembly includes a flux hopper, a welding machine drying assembly and a dust recovery assembly, and the welding machine drying assembly is connected with the flux hopper through a conveying pipeline; The dust recovery component is connected to the flux hopper through a recovery pipeline.

2. The flux supply device for submerged arc automatic welding according to claim 1 is characterized in that: The welding machine body comprises a mobile welding vehicle, a vertical column and a movable crossbeam, wherein the vertical column is fixed on the mobile welding vehicle, and the movable crossbeam is fixed to the vertical column.

3. The flux supply device for submerged arc automatic welding according to claim 2 is characterized in that: The movable crossbeam comprises a main pipe, a sleeve is fixed at the front end of the main pipe, a first extension pipe is inserted into the main pipe and slidably matched with the main pipe, and a second extension pipe is inserted into the first extension pipe and slidably matched with the first extension pipe.

4. The flux supply device for submerged arc automatic welding according to claim 1 is characterized in that: The dust recovery component is an electric dust collector or a dust filter bag.

5. The flux supply device for submerged arc automatic welding according to claim 1 is characterized in that: The feeding assembly also includes an automatic control device for loading and unloading materials. The upper and lower parts of the flux hopper are respectively provided with limit sensors. The feeding pipe is provided with a material unloading switch. The flux drying device is provided with a suction machine.

6. The flux supply device for submerged arc automatic welding according to claim 5, characterized in that: The limit sensor is an infrared sensor.

7. The flux supply device for submerged arc automatic welding according to claim 5, characterized in that: The unloading switch is an electromagnetic or pneumatic switch.

8. The flux supply device for submerged arc automatic welding according to claim 5, characterized in that: The suction machine is an electric or pneumatic suction machine.

9. The flux supply device for submerged arc automatic welding according to claim 5, characterized in that: The automatic loading and unloading control device is electrically connected to the limit sensor, the unloading switch and the suction machine.

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