Gas cylinder placing rack, argon arc welding device and non-stop gas supply method

Abstract

The invention belongs to the field of aluminum sheath processing in cable production, and particularly relates to a gas cylinder placing frame, an argon arc welding device and a non-stop gas supply method.The gas cylinder placing frame comprises a bottom plate, a side plate is arranged on one side of the bottom plate, a main gas conveying pipe is arranged on the side plate, at least two sets of branch gas pipes are arranged on the main gas conveying pipe, and the branch gas pipes are communicated with the bottom plate. By arranging the main gas conveying pipe, the branch gas pipes, the pressure reducing valves and the like, the consumed protective gas cylinders can be replaced while continuous production of the argon arc welding machine is ensured, and therefore continuous and stable quality control in the production process of the argon arc welding machine is achieved; and the influence on the quality of a high-voltage cable product due to unstable factors generated by repeated startup and shutdown during replacement of the protective gas cylinder is avoided.

Description

Technical Field

[0001] The invention relates to the field of aluminum sheath processing in cable production, and in particular to a gas cylinder placement rack, an argon arc welding device and a non-stop gas supply method. Background Art

[0002] The argon arc welding machine is a device for producing high-voltage cable welding and forming aluminum sheaths. It uses high-voltage breakdown to start the arc. First, high-frequency high voltage is applied between the electrode needle (usually a tungsten needle) and the workpiece to break through the argon or helium gas, making it conductive, and then a continuous current is provided to maintain the stability of the arc. In argon arc welding, argon or helium is used as a shielding gas and needs to be filled between the workpiece and the electrode needle first, which helps to start the arc smoothly. After the welding is completed, the gas supply is maintained to help prevent the workpiece from cooling and oxidizing quickly and ensure the welding effect. The circuit of the argon arc welding machine includes the main circuit, auxiliary power supply, drive circuit and protection circuit. The manual switch control circuit ensures precise control during the welding process by controlling the delay of current and gas supply. High-frequency high-voltage control is generated by a step-up transformer and a rectifier circuit to support the operation of the high-frequency oscillation generator. In the welding process of the high-voltage cable metal aluminum sheath produced by the argon arc welding machine, the stable transportation of the shielding gas argon or helium is particularly important for the argon arc welding machine to continuously and stably weld the formed aluminum strip and ensure the reliability of the welding quality.

[0003] Argon or helium is generally contained in a special gas cylinder with a volume of 40L. In the production process of high-voltage cable metal aluminum sheath, if the argon or helium in the gas cylinder is about to be consumed, it is generally stopped to replace another full gas cylinder. Under this operation mode, the welding of aluminum strips is gradually slowed down from the normal production speed until the shutdown, the arc welding is restarted after the gas cylinder is replaced, and the welding current and production speed are gradually increased to meet the production efficiency requirements. The welding process of argon arc welding is very prone to welding instability during the process of deceleration, arc starting, and speed increase. If the production speed and welding machine current are not stably controlled, quality problems such as incomplete penetration and welding arc deviation will occur, and even welding through the aluminum strip will cause insulation burns, which seriously affects the quality of high-voltage cable products. In addition to welding and forming wrinkled aluminum sheaths, when using argon arc welding machines to produce smooth aluminum sheaths, because they must be linked with the outer sheath process, the argon arc welding production process cannot be stopped. If it is stopped for ventilation, the outer sheath production will be discontinuous, which does not meet the process quality requirements.

[0004] Therefore, those skilled in the art are committed to developing a gas cylinder placement rack, an argon arc welding device and a non-stop gas supply method. Summary of the invention

[0005] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a gas cylinder placement rack, an argon arc welding device and a non-stop gas supply method.

[0006] To achieve the above objectives, the present invention provides a gas cylinder placement rack, comprising a base plate, a side plate is provided on one side of the base plate, a main gas pipe is provided on the side plate, at least two groups of branch gas pipes are provided on the main gas pipe, and each branch gas pipe is provided with a pressure reducing valve.

[0007] Preferably, a connecting rod is provided on the bottom plate, one end of the connecting rod is connected to the bottom plate, and the other end is connected to the side plate.

[0008] Preferably, a plurality of reinforcing rods are provided on the side panels, and a plurality of the reinforcing rods are provided with nooses.

[0009] Preferably, a main gas valve is provided on the main gas transmission pipe, and a gas flow monitoring and control meter is provided next to the main gas valve.

[0010] The present invention also provides an argon arc welding device, comprising any of the above-mentioned gas cylinder placement racks.

[0011] Preferably, the device further comprises a welding machine, wherein the welding machine is provided with a welding gun and an air pipe, wherein one end of the air pipe is connected to the welding gun, and the other end is connected to the main air pipe.

[0012] The present invention also provides a method for supplying gas during argon arc welding without stopping the machine, comprising the following steps:

[0013] S1. Install at least two sets of branch gas pipes on the main gas transmission pipe, and each branch gas pipe is connected to a gas cylinder respectively;

[0014] S2. When a gas cylinder is used up, adjust the pressure reducing valve on the gas cylinder and increase the output pressure of the remaining gas cylinders accordingly to keep the total gas pressure in the main gas pipeline stable;

[0015] S3. After replacing the empty gas cylinder with a new one, reduce the output gas pressure of the remaining gas cylinders accordingly to stabilize the gas pressure in the main gas pipeline, thereby achieving non-stop gas supply.

[0016] The beneficial effect of the present invention is that the present invention can replace the consumed shielding gas cylinder while ensuring the continuous production of the argon arc welding machine by arranging the main gas transmission pipe, branch gas pipes and various pressure reducing valves, thereby achieving continuous and stable quality control during the production process of the argon arc welding machine, avoiding the unstable factors caused by repeated start and stop of the shielding gas cylinder when replacing the shielding gas cylinder and affecting the quality of the high-voltage cable product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0018] 1. Bottom plate; 2. Side plate; 21. Reinforcement rod; 22. Lasso; 3. Connecting rod; 4. Main gas pipe; 41. Main gas valve; 42. Gas flow monitoring controller; 5. Branch gas pipe; 5a. Pressure reducing valve; 6. Gas cylinder valve; 7. Welding machine; 71. Welding gun; 72. Gas pipe. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] like Figure 1 As shown, a gas cylinder placement rack includes a bottom plate 1, which is a load-bearing plate and provides an installation foundation for the device. A side plate 2 is provided on one side of the bottom plate 1, and a plurality of reinforcing rods 21 are provided on the side plate 2 to improve the strength of the side plate 2. A plurality of reinforcing rods 21 are provided with lassoes 22 for further fixing the gas cylinder to prevent the cylinder from tilting during use or colliding with other adjacent gas cylinders to cause an accident. A connecting rod 3 is provided on the bottom plate 1, and one end of the connecting rod 3 is connected to the bottom plate 1, and the other end is connected to the side plate 2. The stability of the overall structure is increased by setting the connecting rod 3. A main gas pipeline 4 is provided on the side plate 2, and at least two groups of branch gas pipelines are provided on the main gas pipeline 4. Tube 5. In this embodiment, the branch air pipes 5 are arranged in four groups, each of which is connected to a gas cylinder. Each branch air pipe 5 is provided with a pressure reducing valve 5a, and the output gas pressure of the gas cylinder can be adjusted by the pressure reducing valve 5a. Furthermore, the pressure reducing valve 5a separately arranged on the branch air pipe 5 can also be used to select which bottle of protective gas to use first, or the protective gas component in the main gas pipe 4 can be controlled by adjusting the output gas pressure of each gas cylinder. The main gas pipe 4 is provided with a main gas valve 41, and a gas flow monitoring and control meter 42 is provided next to the main gas valve 41, which is convenient for real-time monitoring of the gas flow rate, and can also periodically monitor and count the usage of the protective gas.

[0021] The present invention also provides an argon arc welding device, comprising any of the above-mentioned gas cylinder placement racks, and also comprising a welding machine 7, on which a welding gun 71 and an air pipe 72 are provided, one end of the air pipe is connected to the welding gun, and the other end is connected to the main gas pipeline.

[0022] When in use, connect and fix the gas cylinder interface to the branch gas pipe 5, open the gas cylinder valve 6, and stabilize the gas pressure in the main gas pipe 4 by adjusting the pressure reducing valve 5a on each branch gas pipe 5. You can also choose to use a certain bottle of protective gas first, or when one of the gas cylinders is used up, increase the gas pressure in other branch gas pipes 5 to keep the gas pressure in the main gas pipe 4 unchanged. After replacing the empty gas cylinder with a new gas cylinder, reduce the output gas pressure in other branch gas pipes 5 accordingly, so that the argon arc welding machine 7 can produce the metal aluminum sheath of the high-voltage cable without stopping for ventilation, which ensures the continuous stability of the quality control in the production process of the argon arc welding machine 7 and avoids the unstable factors caused by repeated start and stop of the protective gas cylinder to affect the quality of the high-voltage cable product.

[0023] The present invention also provides a non-stop ventilation method for argon arc welding, comprising the following steps:

[0024] S1. In this embodiment, four groups of branch air pipes 5 are installed on the main air delivery roller 4, and each branch air pipe 5 is connected to a gas cylinder. In other embodiments, at least two groups of branch air pipes 5 are provided to facilitate alternating replacement;

[0025] S2. When a gas cylinder is used up, the pressure reducing valve 5a on the gas cylinder is adjusted to reduce the gas pressure in the branch gas pipe 5. At the same time, the output gas pressure in the remaining branch gas pipes 5 is increased accordingly to keep the total gas pressure in the main gas pipe 4 stable.

[0026] S3. After replacing the empty gas cylinder with a new one, the output gas pipes in the remaining branch gas pipes 5 are reduced accordingly to keep the total gas pressure in the main gas pipe 4 stable, thereby achieving a non-stop ventilation process.

[0027] In this way, it is achieved that during the process of producing high-voltage cable metal aluminum sheath by the argon arc welding machine 7, the production process will not be interrupted due to the replacement of the shielding gas cylinder. By switching and adjusting the cylinder valve 6, the pressure reducing valve 5a, the branch gas pipe 5, the main gas valve 41, and the gas flow monitoring and control meter 42, the consumed shielding gas cylinder can be replaced while ensuring the continuous production of the argon arc welding machine 7. At the same time, the gas flow monitoring and control meter 42 can periodically monitor and count the shielding gas usage, thereby achieving continuous and stable quality control during the production process of the argon arc welding machine 7, avoiding the unstable factors caused by repeated start-up and shutdown of the shielding gas cylinder to affect the quality of the high-voltage cable product. This method is suitable for the welding process of the argon arc welding machine to produce high-voltage cable welding products such as wrinkled aluminum sheaths and smooth aluminum sheaths, and realizes the replacement of shielding gas without stopping the machine.

[0028] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A gas cylinder placement rack, characterized in that: It comprises a bottom plate (1), a side plate (2) is provided on one side of the bottom plate (1), a main gas pipeline (4) is provided on the side plate (2), at least two groups of branch gas pipelines (5) are provided on the main gas pipeline (4), and each branch gas pipeline (5) is provided with a pressure reducing valve (5a).

2. The gas cylinder rack according to claim 1, characterized in that: A connecting rod (3) is provided on the bottom plate (1), one end of the connecting rod (3) is connected to the bottom plate (1), and the other end is connected to the side plate (2).

3. The gas cylinder rack according to claim 1, characterized in that: A plurality of reinforcing rods (21) are provided on the side plate (2), and a plurality of the reinforcing rods (21) are provided with lassoes (22).

4. The gas cylinder rack according to claim 1, characterized in that: The main gas transmission pipe (4) is provided with a main gas valve (41), and a gas flow monitoring and control meter (42) is provided next to the main gas valve (41).

5. A argon arc welding device, characterized in that: It comprises a gas cylinder placement rack as described in any one of claims 1 to 4.

6. The argon arc welding device according to claim 5, characterized in that: The invention also comprises a welding machine (7), wherein the welding machine (7) is provided with a welding gun (71) and an air pipe (72), wherein one end of the air pipe (72) is connected to the welding gun (71), and the other end is connected to the main air pipe (4).

7. A method for supplying gas to argon arc welding without stopping the machine, characterized in that: The following steps are involved: S1. Install at least two sets of branch gas pipes (5) on the main gas transmission pipe (4), and each branch gas pipe (5) is connected to a gas cylinder respectively; S2. When a gas cylinder is used up, the pressure reducing valve (5a) on the branch gas pipe (5) is adjusted, and at the same time, the output gas pressure in the remaining branch gas pipes (5) is increased accordingly, so that the total gas pressure in the main gas pipe (4) remains stable; S3. After replacing the empty gas cylinder with a new one, the output gas pressure in the remaining branch gas pipes (5) is reduced accordingly, so that the gas pressure in the main gas pipe (4) is stabilized, thereby achieving gas supply without stopping the machine.

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