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CN-121972783-A - Tank body and end socket welding method, device and system

CN121972783ACN 121972783 ACN121972783 ACN 121972783ACN-121972783-A

Abstract

The application relates to the technical field of plasma welding, in particular to a method, a device and a system for welding a tank body and an end socket, wherein the method comprises the steps of preparing for welding, lifting the tank body and the end socket fixed by spot welding to a welding station, arranging a bearing mechanism on the welding station, bearing and driving the tank body to rotate, restraining the end part of the tank body and reducing the axial slip of the tank body, aligning a welding head through physical calibration of an infrared emitter, enabling the welding head to be aligned with a welding seam to be welded, starting a plasma welding program, rotating the tank body at a preset rotating speed, driving the tank body to rotate at a constant speed, and welding the welding seam by the welding head until one circle of rotation is completed. The device comprises a construction frame, a bearing mechanism, a driving mechanism and a welding mechanism. The application reduces manual intervention, improves welding efficiency and stability of quality, reduces labor intensity and improves adjustment efficiency.

Inventors

  • ZHANG CHANGXU
  • ZHANG CHANGCHUN
  • LIN LIN

Assignees

  • 山东蓄存机械科技有限公司

Dates

Publication Date
20260505
Application Date
20260325

Claims (10)

  1. 1. A welding method for a tank body and an end socket is characterized by comprising the following steps: The method comprises the steps of preparing for welding, namely hoisting a tank body and an end socket which are fixed by spot welding to a welding station, wherein a bearing mechanism (200) is arranged on the welding station and used for bearing and driving the tank body to rotate, restraining the end part of the tank body and reducing the axial sliding of the tank body; welding alignment, namely physically calibrating and positioning a welding head through an infrared emitter to enable the welding head to be aligned with a weld joint to be welded; And (3) starting a plasma welding program, rotating the tank body at a preset rotating speed to drive the tank body to rotate at a constant speed, and simultaneously welding the welding line by the welding head until the welding is completed by rotating for one circle.
  2. 2. A tank body and seal head welding device is characterized by comprising a construction frame (100), a bearing mechanism (200), a driving mechanism and a welding mechanism (400), wherein the bearing mechanism (200) comprises bearing rollers (210), adjusting rollers (220) and positioning rings (230), the bearing rollers (210) are arranged on the construction frame (100) in a parallel rotating mode, the tank body is placed between the two bearing rollers (210), each bearing roller (210) is correspondingly provided with the two adjusting rollers (220) and the positioning rings (230), the adjusting rollers (220) are connected with the positioning rings (230) and slide on the bearing rollers (210), the adjusting rollers (220) are used for bearing the side walls of the ends of the tank body, the diameter of the positioning rings (230) is larger than that of the adjusting rollers (220) and used for restraining the end portions of the tank body to reduce axial movement, the driving mechanism is arranged on the construction frame (100), the driving mechanism is connected with one bearing roller (210) and used for driving the bearing rollers (210) to rotate, and the positioning rings (230) are arranged on the construction frame (100) to weld the tank body.
  3. 3. The tank and closure welding apparatus of claim 2, further comprising an infrared assist structure (500), wherein the infrared assist structure (500) is disposed on the welding mechanism (400) for assisting the welding mechanism (400) in aligning with a weld.
  4. 4. The tank and head welding device according to claim 3, wherein the regulating roller (220) comprises a roller body (221), a first roller ring (222), a sliding piece (223) and a second roller ring (224), the roller body (221) is slidably arranged on the supporting roller (210) and is connected with the positioning ring (230), the first roller ring (222) is arranged on the roller body (221), the second roller ring (224) is slidably connected with the roller body (221) through the sliding piece (223), and the outer diameter of the second roller ring (224) is the same as that of the first roller ring (222).
  5. 5. The welding device for the can body and the seal head according to claim 4, wherein a shoulder (228) is arranged on the roller body (221), and the shoulder (228) is attached to the inner walls of the first roller ring (222) and the second roller ring (224) and slides relatively; the first roller ring (222) slides on the bearing shoulder (228).
  6. 6. The tank and seal head welding device according to claim 5, wherein a compression spring (225) and a limiting pin (226) are arranged on the roller body (221), the first roller ring (222) slides on the roller body (221) through the compression spring (225), the compression spring (225) drives the first roller ring (222) to abut against the second roller ring (224), a limiting hole is formed in the roller body (221), and the limiting pin (226) is inserted into any limiting hole and used for limiting the shoulder bearing (228) to be far away from the positioning ring (230).
  7. 7. The tank and closure head welding apparatus according to claim 6, wherein one end of the first roll collar (222) close to the second roll collar (224) is conical, and one end of the first roll collar close to the second roll collar (224) is a small end, an embedded groove (227) is correspondingly formed in the second roll collar (224), and the small end of the first roll collar (222) can be embedded into the embedded groove (227).
  8. 8. The welding device for can bodies and seal heads according to claim 7, wherein a gap-cleaning soft brush (240) is arranged on the second roll collar (224), the gap-cleaning soft brush (240) slides in the embedded groove (227), an ejecting spring (250) is arranged, and when the small end of the first roll collar (222) enters the embedded groove (227), the gap-cleaning soft brush (240) is pushed to sink into the embedded groove (227) against the elastic force of the ejecting spring (250).
  9. 9. The welding device for the tank and the sealing head according to claim 2, wherein the supporting roller (210) is sleeved with a shielding sleeve.
  10. 10. A tank and closure welding system comprising a tank and closure welding apparatus as claimed in any one of claims 2 to 9, and a controller electrically connected to the drive mechanism and the welding mechanism (400) and configured to perform the tank and closure welding method as claimed in claim 1.

Description

Tank body and end socket welding method, device and system Technical Field The application relates to the technical field of plasma welding, in particular to a method, a device and a system for welding a tank body and a sealing head. Background With the rapid development of new energy automobile industry, especially the commercialization and popularization of hydrogen fuel cell automobiles, the maintenance and repair demands of vehicle-mounted high-pressure hydrogen storage tanks (such as type III and type IV bottles) are increasing. The air storage tank is generally composed of a metal or composite material liner, a carbon fiber winding layer and metal sealing heads at two ends, and after long-term use or collision, the problems of tank weld joint leakage, sealing head damage and the like can occur. Because the vehicle-mounted air storage tank belongs to high-pressure special equipment, the maintenance welding process requirement is very strict, and high-precision welding equipment is required to ensure the sealing performance and the structural strength after repair, so that a new challenge is provided for the welding technology of the automobile maintenance service industry. At present, in the field of electric automobile maintenance service and the field of tank welding, welding is generally performed by adopting a welding mode of a plasma arc welding machine aiming at welding and welding repair of an air storage tank (particularly a metal liner or a metal seal head). During welding or maintenance, a technician places the tank body to be repaired at a maintenance station, and the circumferential weld is welded by manually rotating the tank body. When the tank body is longer or a plurality of circular seams need to be welded, after one circular seam is welded, a technician is required to manually pull the heavy tank body, the axial position of the heavy tank body is adjusted, the next circular seam to be welded is aligned with a welding gun, and then the welding is performed again. For welding of the longitudinal seam, the tank body needs to be fixed, a welding gun is held by a technician to move along the welding seam direction, the welding mode has extremely high requirements on the operation experience of the technician, and consistency and stability of welding quality are difficult to ensure. However, when a plurality of circular seams are welded, each welding seam is required to manually pull a heavy tank body to adjust the position, so that the labor intensity is high, the adjustment efficiency is low, the axial displacement of the tank body is difficult to accurately control by manual pulling, the alignment precision of a welding gun of the next welding seam cannot be ensured, the consistency of welding quality and the repair efficiency in batch maintenance are seriously affected, and even local stress concentration of the tank body is possibly caused by welding deviation, and on the other hand, a plurality of welding initial points exist in the plurality of times of welding, and the problem of welding quality is easy to exist. Disclosure of Invention The application provides a tank body and end socket welding method, device and system, which can at least partially solve the technical problems. In a first aspect, the present application provides a tank and a method for welding an end socket, which adopts the following technical scheme: a welding method of a tank body and an end socket comprises the following steps: the method comprises the steps of preparing for welding, namely hoisting a tank body and an end socket which are fixed by spot welding to a welding station, wherein a bearing mechanism is arranged on the welding station and used for bearing and driving the tank body to rotate, restraining the end part of the tank body and reducing the axial slippage of the tank body; welding alignment, namely physically calibrating and positioning a welding head through an infrared emitter to enable the welding head to be aligned with a weld joint to be welded; And (3) starting a plasma welding program, rotating the tank body at a preset rotating speed to drive the tank body to rotate at a constant speed, and simultaneously welding the welding line by the welding head until the welding is completed by rotating for one circle. By adopting the technical scheme, when the maintenance or the manufacture of the gas storage pipeline on the electric automobile is carried out, an operator firstly lifts the tank body and the end socket assembly which are subjected to the spot welding assembly to a welding station, and places the tank body and the end socket assembly on a bearing mechanism; the method comprises the steps of supporting a tank body, limiting the movement of the tank body in the axial direction through an end constraint structure, starting an infrared emitter by an operator, projecting infrared spots on the surface of the tank body, enabling the spots to accurately fall on the central line of a weldi