Automatic welding device for butt joint circumferential weld of special gas cylinder

Abstract

The utility model provides a special gas cylinder butt joint circumferential weld automatic welding device which comprises a base and a welding module, a guide rail is arranged on the upper surface of the base, the welding module is arranged on the guide rail in a sliding mode, and a plurality of rotating bearings rotating in the same direction are arranged on the upper surface of the base to support gas cylinders. The welding module comprises a supporting frame, a horizontal telescopic arm and a welding gun, the supporting frame is movably arranged in the guide rail, a sliding rail in the vertical direction is arranged in the supporting frame, one end of the horizontal telescopic arm is arranged on the sliding rail of the supporting frame in an up-down moving mode, and the welding gun is fixedly arranged at the other end of the horizontal telescopic arm; the welding module is further provided with a PCB control mechanism for controlling movement of all assemblies of the welding module. The spinning bottle opening has the advantages that the problem that due to the unique arc shape of the spinning bottle opening, a traditional automatic pipeline welding machine is inconvenient to weld is solved. A traditional welding method is not only low in efficiency, but also difficult to ensure the stability of welding quality.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to an automatic welding device for butt-jointed ring welds of special gas cylinders. Background Art

[0002] In the current industrial manufacturing environment, the circumferential weld butt connection of the bottle mouth is particularly critical for the production of large-volume seamless steel gas cylinders, especially when it comes to gas cylinders with diameters of DN500 to DN1000 and lengths of 1500 to 3000 mm. This step is not only related to the sealing and safety of the gas cylinder, but also directly affects the efficiency of the entire production process.

[0003] At present, in the production process, the butt connection of the circumferential weld of the bottle mouth mainly relies on manual gas shielded welding. However, this method has obvious limitations. First, the production efficiency of manual welding is relatively low and cannot meet the needs of large-scale production. Secondly, the accuracy and stability of manual welding are difficult to guarantee, and the pass rate of one-time flaw detection is low, which increases the production cost and cycle. In addition, the width and height of the welding forming are different during manual welding, and the welding gun frequently starts and ends the arc. These factors may lead to defects in starting and ending the arc, further reducing the welding quality.

[0004] What is more serious is that if there are defects in the welding process, the quenching liquid may penetrate into the bottle mouth welding. In the subsequent high-temperature tempering process, these quenching liquids may cause safety accidents such as furnace explosions, bringing great risks to production.

[0005] In order to solve these problems and improve welding quality and production efficiency, we investigated the automatic welding machines for long-distance pipeline girth welds provided by welding equipment manufacturers on the market. However, after in-depth research, we found that although these automatic welding machines performed well in welding pipeline girth welds, they were not suitable for the large-volume steel seamless gas cylinders we produce. On the one hand, these welding machines are mainly designed for welding between two girth welds of the same specification, while the shape and size of our gas cylinders have changed to a certain extent after spinning, making it difficult to ensure the uniformity and consistency of welding. On the other hand, these welding machines are usually in a flat position when moving in the girth, while our gas cylinders need to be adjusted at multiple angles and directions during welding to ensure the integrity and reliability of the welding.

[0006] Therefore, we urgently need to find an automated welding solution that can not only meet the welding needs of circumferential welds at the spinning joints of large-volume seamless steel gas cylinders, but also ensure welding quality and production efficiency. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the problem that although the automatic welding machine performs well in welding the circumferential weld of the pipeline, it is not suitable for the large-volume steel seamless gas cylinders we produce is solved.

[0008] The utility model provides a special gas cylinder butt ring weld automatic welding device, comprising a base and a welding module, a guide rail is arranged on the upper surface of the base, the welding module is slidably arranged on the guide rail, and a plurality of rotating bearings rotating in the same direction are arranged on the upper surface of the base to support the gas cylinder;

[0009] The welding module comprises a support frame, a horizontal telescopic arm and a welding gun, wherein the support frame is movably arranged in a guide rail, a vertical slide rail is arranged in the support frame, one end of the horizontal telescopic arm is movably arranged on the slide rail of the support frame, and the other end of the horizontal telescopic arm is fixedly provided with a welding gun;

[0010] The welding module is also provided with a PCB control mechanism to control the movement of each component of the welding module.

[0011] Furthermore, a three-phase asynchronous motor and a reducer are arranged at one end of the rotating shaft for driving, and a bearing connection base is arranged at the other end of the rotating shaft.

[0012] Furthermore, the horizontal telescopic arm is provided with a clamping device to fix the welding gun.

[0013] As a preferred solution, the clamping device is provided with a trumpet-shaped smoke collector cover above the welding gun to recover the smoke generated by welding, and is also provided with an infrared positioning device for assisting in positioning the weld.

[0014] Furthermore, a placement seat is arranged outside the support frame.

[0015] Furthermore, the PCB control mechanism and the gas shielded welding machine of the welding gun are arranged on a placement seat.

[0016] As a preferred solution, the PCB control mechanism is provided with an A / D conversion module, and the A / D conversion module controls the left and right swing amplitude, dwell time, center dwell time and swing frequency of the welding gun.

[0017] The use of the utility model:

[0018] Place the workpiece on the rotating shaft, move the support frame, and move the center of the welding gun to the relative position of the center of the weld seam of the workpiece; adjust the height and front-to-back distance of the horizontal telescopic arm according to the specifications of the workpiece to ensure that the conductive nozzle of the welding gun is within 5-8mm of the height of the weld seam of the workpiece; input the path speed, swing length, swing frequency, welding current and welding voltage into the PCB control mechanism according to the designed welding process; after power is turned on, first turn on the welding module, the gas shielded welding machine releases carbon dioxide shielding gas, then strikes the arc for welding, and the clamping device drives the welding gun to swing horizontally for welding; when the welding gun swings to the center of the weld seam of the workpiece, turn on the power supply of the three-phase asynchronous motor and the reducer to drive the rotating shaft, so that the workpiece rotates circumferentially for welding; after welding is completed, the PCB control mechanism controls the motor to stop welding, and manually removes the weld coating.

[0019] The beneficial effects of the utility model are:

[0020] 1. Solved the problem that the traditional automatic pipe welding machine is inconvenient to weld due to the unique arc shape of the spinning bottle mouth. The traditional welding method is not only inefficient, but also difficult to ensure the stability of welding quality. In response to this technical problem, our R&D team successfully developed a special gas cylinder butt ring weld automatic welding device, which completely solved this industry pain point.

[0021] 2. This special gas cylinder butt ring weld automatic welding device has excellent adaptability. It is capable of gas shielded welding of any type of ring weld. During the welding process, the gas shielded welding gun always maintains a stable flat welding position, which not only ensures the accuracy of the welding position, but also effectively improves the welding quality. Through precise inverter control, the rotation speed of the workpiece can be accurately adjusted as needed to ensure the smooth progress of the welding operation.

[0022] 3. The automatic welding device of the utility model also has an intelligent programming function. According to the key parameters such as the thickness of the welding joint, the groove angle, the root gap, etc., the welding program of each layer of the weld can be pre-programmed. When it is necessary to weld gas cylinders of the same specifications, you only need to directly call the program to realize the fully automatic welding operation. This not only greatly saves the time of manual operation, but also improves the consistency and stability of welding.

[0023] 4. The utility model is particularly good at automatic welding of butt ring welds. The weld width and weld excess height remain consistent, making the weld shape beautiful and elegant. Compared with traditional welding methods, the automatic welding device of the utility model has significantly improved welding efficiency, which can be increased by at least 30%. In the same time, we can complete more welding tasks and meet the market demand for high-quality gas cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 It is a structural schematic diagram of the utility model from another angle.

[0027] Figure 3 It is a structural schematic diagram of the welding module of the present utility model.

[0028] The reference numerals in the accompanying drawings are:

[0029] 1. Base, 2. Three-phase asynchronous motor and reducer, 3. Rotating shaft, 4. Guide rail, 5. Workpiece, 6. Bearing, 8. Welding gun, 9. Clamp, 10. Horizontal telescopic arm, 11. Frame support, 12. PCB control mechanism, 13. Gas shielded welding machine, 14. Placement seat, 18. Smoke collector. DETAILED DESCRIPTION

[0030] To illustrate the features of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0031] Example:

[0032] See also Figures 1 to 3 The present embodiment provides an automatic welding device for butt-jointed ring welds of special gas cylinders, comprising a base 1 and a welding module. A guide rail 4 is arranged on the upper surface of the base 1, and the welding module is slidably arranged on the guide rail 4. A plurality of rotating shafts 3 rotating in the same direction are arranged on the upper surface of the base to support the gas cylinder; a three-phase asynchronous motor and a reducer 2 are arranged at one end of the rotating shaft 3 to drive it, and a bearing 6 is arranged at the other end of the rotating shaft 3 to connect with the base 1.

[0033] The welding module includes a support frame 11, a horizontal telescopic arm 10 and a welding gun 8. The support frame 11 is movably arranged in the guide rail 4. A vertical slide rail is arranged in the support frame 11. One end of the horizontal telescopic arm 10 is movably arranged on the slide rail of the support frame 11. The other end of the horizontal telescopic arm 10 is fixedly provided with a welding gun 8. The horizontal telescopic arm 10 is provided with a clamping device 9 to fix the welding gun 8. The clamping device 9 is provided with a trumpet-shaped smoke collector 18 covering the top of the welding gun 8 to recover the smoke generated by welding, and is also provided with an infrared positioning device for assisting in positioning the weld.

[0034] In addition, the welding module is also provided with a PCB control mechanism 12 to control the movement of each component of the welding module. The PCB control mechanism 12 is provided with an A / D conversion module, and the A / D conversion module controls the left and right swing amplitude, dwell time, center dwell time and swing frequency of the welding gun. In order to improve the stability of the device, a placement seat 14 is provided on the outer side of the support frame 11, and the PCB control mechanism 12 and the gas shielded welder 13 of the welding gun 8 are arranged on the placement seat 14.

[0035] The use of the utility model:

[0036] Place the workpiece 5 on the rotating shaft 3, move the supporting frame 11, and move the center of the welding gun 8 to the relative position of the center of the weld of the workpiece 5; adjust the height and front-to-back distance of the horizontal telescopic arm 10 according to the specifications of the workpiece 5 to ensure that the conductive nozzle of the welding gun 8 is within the range of 5-8mm from the weld height of the workpiece 5; input the path speed, swing length, swing frequency, welding current and welding voltage into the PCB control mechanism 12 according to the designed welding process; after power is turned on, first turn on the welding module, the gas shielded welding machine 13 releases carbon dioxide shielding gas, then strikes the arc for welding, and the clamping device 9 drives the welding gun 8 to swing horizontally for welding; when the welding gun 8 swings to the center of the weld of the workpiece 5, turn on the power supply of the three-phase asynchronous motor and the reducer 2 to drive the rotating shaft 3, so that the workpiece 5 rotates circumferentially for welding; after welding is completed, the PCB control mechanism 12 controls the motor to stop welding, and manually removes the weld coating.

[0037] The above embodiments and drawings are only used to illustrate the technical solution of the utility model, and are not intended to limit the utility model. The utility model is described in detail with reference to the preferred embodiments. It should be understood by ordinary technicians in this field that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the utility model do not deviate from the purpose of the utility model and should also fall within the scope of protection of the claims of the utility model. Other related technical structures not fully disclosed in the utility model are prior art in the field.

Claims

1. An automatic welding device for a butt-jointed girth weld of a special gas cylinder, comprising a base (1) and a welding module, wherein a guide rail (4) is arranged on the upper surface of the base (1), and the welding module is slidably arranged on the guide rail (4), and wherein: The upper surface of the base is provided with a plurality of rotating shafts (3) rotating in the same direction to support the gas cylinder; The welding module comprises a support frame (11), a horizontal telescopic arm (10) and a welding gun (8); the support frame (11) is movably arranged in a guide rail (4); a vertical slide rail is arranged in the support frame (11); one end of the horizontal telescopic arm (10) is movably arranged on the slide rail of the support frame (11); and the other end of the horizontal telescopic arm (10) is fixedly provided with a welding gun (8); The welding module is also provided with a PCB control mechanism (12) for controlling the movement of various components of the welding module.

2. The automatic welding device for butt weld of special gas cylinders according to claim 1 is characterized in that: A three-phase asynchronous motor and a reducer (2) are provided at one end of the rotating shaft (3) for driving, and a bearing (6) is provided at the other end of the rotating shaft (3) for connecting with the base (1).

3. The automatic welding device for butt weld of special gas cylinders according to claim 1 is characterized in that: The horizontal telescopic arm (10) is provided with a clamping device (9) for fixing the welding gun (8).

4. The automatic welding device for butt weld of special gas cylinders according to claim 3 is characterized in that: The clamping device (9) is provided with a trumpet-shaped smoke collector (18) which covers the top of the welding gun (8) to collect smoke generated by welding, and is also provided with an infrared positioning device for assisting in positioning the weld.

5. The automatic welding device for butt weld of special gas cylinders according to claim 1 is characterized in that: A placement seat (14) is arranged outside the support frame (11).

6. The automatic welding device for butt weld of special gas cylinders according to claim 1 is characterized in that: The PCB control mechanism (12) and the gas shielded welding machine (13) of the welding gun (8) are arranged on a placement seat (14).

7. The automatic welding device for butt weld of special gas cylinders according to claim 1 is characterized in that: The PCB control mechanism (12) is provided with an A / D conversion module, and the A / D conversion module controls the left and right swing amplitude, dwell time, center dwell time and swing frequency of the welding gun.

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