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CN-122007618-A - Motor housing laser welding device

CN122007618ACN 122007618 ACN122007618 ACN 122007618ACN-122007618-A

Abstract

The invention discloses a motor shell laser welding device which comprises a horizontally placed operation platform, wherein a bearing plate is arranged above the operation platform, a motor shell to be welded is fixed above the bearing plate, a laser welding head is arranged above the operation platform, the laser welding head is fixedly arranged on the front side of a connecting block, the connecting block drives the laser welding head to move through a moving mechanism, a filter box is fixedly arranged at the rear end of the upper surface of the operation platform, smoke generated during welding enters the filter box through a negative pressure mechanism, and a filter cover for filtering particles in the smoke is fixedly arranged in the filter box. This motor housing laser welding device adopts novel structural design, and when protection gas (argon gas) got into inside the connecting block, utilized atmospheric pressure effect to promote the inside piston mechanism of connecting block and reciprocate to utilize piston mechanism to drive the reciprocal rotation around the protection gas shower nozzle, enlarge the blowing scope of protection gas, improve the protection effect to welding position.

Inventors

  • ZHU LI
  • LIU WENZHONG
  • ZHANG YUJIAO
  • LIU ZECHEN
  • LIU YONGKAI
  • Fu Fengxuan
  • YUAN SHUAI

Assignees

  • 衡水电机股份有限公司

Dates

Publication Date
20260512
Application Date
20260402

Claims (10)

  1. 1. The utility model provides a motor housing laser welding device, includes operation platform (1) that the level was placed, and operation platform (1) top sets up loading board (2), and motor casing (3) that need welded are fixed in loading board (2) top, its characterized in that still includes: A laser welding head (9) is arranged above the operation platform (1), the laser welding head (9) is fixedly arranged on the front side of the connecting block (8), and the connecting block (8) drives the laser welding head (9) to move through a moving mechanism; The rear end of the upper surface of the operation platform (1) is fixedly provided with a filter box (10), smoke generated during welding enters the filter box (10) through a negative pressure mechanism, and a filter cover (19) for filtering particles in the smoke is fixedly arranged in the filter box (10); The protection gas shower nozzle (20) is installed in rotation of connecting block (8) lower extreme, and protection gas shower nozzle (20) blowout argon gas is gaseous to be protected in welding position, protection gas shower nozzle (20) pivot position outside laminating is provided with friction block (25), and friction block (25) reciprocate and drive protection gas shower nozzle (20) through connecting block (8) inside piston mechanism.
  2. 2. The laser welding device for the motor housing according to claim 1, wherein the moving mechanism comprises a support frame (4) fixedly arranged on the upper surface of the operating platform (1) and a Y-axis sliding rail (5) fixedly arranged at the upper end of the support frame (4), and an X-axis sliding rail (6) is slidably arranged at the upper end of the Y-axis sliding rail (5).
  3. 3. The laser welding device for the motor shell according to claim 2 is characterized in that a Z-axis cylinder (7) is slidably arranged at the front side of the X-axis sliding rail (6), and a connecting block (8) is fixedly arranged at the lower end of the Z-axis cylinder (7).
  4. 4. The laser welding device for the motor shell according to claim 1, wherein the negative pressure mechanism comprises a negative pressure pipe (14) fixedly arranged at the rear side of the filter box (10) and an air inlet hole (13) formed in the upper surface of the bearing plate (2), and a front-back sliding structure is formed between the bearing plate (2) and the upper surface of the operating platform (1).
  5. 5. The laser welding device for the motor housing according to claim 4, wherein the back of the bearing plate (2) is provided with a butt joint hole (12), the butt joint hole (12) is communicated with the air inlet hole (13) through a cavity in the bearing plate (2), the butt joint hole (12) corresponds to a butt joint pipe (11) fixedly installed on the front side of the filter box (10), and the butt joint pipe (11) is inserted into the butt joint hole (12) to enable the air inlet hole (13) to be communicated with the inside of the filter box (10).
  6. 6. The laser welding device for the motor shell according to claim 1, wherein the left end of the upper surface of the operating platform (1) is fixedly provided with an air storage tank (15) for storing argon, the air storage tank (15) is communicated with a heat exchange tube (18) fixedly arranged in the filter box (10) through a first connecting tube (16), and the right end of the heat exchange tube (18) is communicated with an inner cavity of the connecting block (8) through a second connecting tube (17).
  7. 7. A motor housing laser welding apparatus as claimed in claim 6, wherein the internal cavity of the connection block (8) is in communication with the shielding gas nozzle (20) via a third connection pipe (21).
  8. 8. A motor housing laser welding apparatus as set forth in claim 7, wherein said piston mechanism comprises a piston plate (22) transversely mounted inside the connection block (8), said piston plate (22) is located above the second connection pipe (17), and a return spring (23) is fixedly mounted between the upper surface of the piston plate (22) and the inner wall of the connection block (8).
  9. 9. The laser welding device for the motor housing according to claim 8, wherein a connecting rod (24) is fixedly arranged on the lower surface of the piston plate (22), the lower end of the connecting rod (24) is fixedly arranged with a friction block (25), and the connecting rod (24) and the lower end of the connecting block (8) form a penetrating sliding structure.
  10. 10. The laser welding device for the motor housing according to claim 9, wherein the contact positions of the friction blocks (25) and the protective gas spray head (20) are rough structures by a polishing process, and the connecting rod (24) drives the friction blocks (25) to move up and down and drives the protective gas spray head (20) to rotate by friction force.

Description

Motor housing laser welding device Technical Field The invention relates to the technical field of motor welding manufacture, in particular to a motor shell laser welding device. Background The motor is a power device for converting electric energy into mechanical energy, the rotor and the stator are placed inside the motor to be protected by utilizing a shell, and components connected with the motor shell are generally required to be welded and fixed in a welding mode in the manufacturing process of the motor. In the prior art, chinese patent application number 202110332172.9 discloses a laser welding device for servo motor shell, provides four welding positions through mesa subassembly, and four work pieces that will need welded are ejecting the main tank one by one, and under the cooperation of material loading subassembly, welding assembly welds four work pieces in proper order, need not to readjust the position of soldered connection at every turn. The position of the laser welding machine head in the X, Y, Z direction is adjusted through the first oil cylinder, the second oil cylinder and the third oil cylinder, meanwhile, the transmission shaft is driven to rotate through the adjusting motor, the third gear is meshed with the fourth gear, and the rotating plate rotates around the central axis of the adjusting shaft. In the prior art, chinese patent application number 202110059352.4 discloses a laser welding machine, which comprises a housin, the top outer wall fixedly connected with backup pad of casing, and the top outer wall of casing is provided with the gas pocket that runs through the backup pad, the top outer wall of backup pad is fixedly connected with riser and folded plate respectively, the output shaft one end fixedly connected with chucking mechanism of motor. According to the invention, the pipe is fixedly clamped through the clamping mechanism, and the flue gas generated during welding is sucked into the conical cylinder from the air hole under the action of the air pump and then enters the filtering mechanism, so that particles and harmful gas in the flue gas can be effectively filtered under the action of the filtering mechanism. In the prior art, chinese patent application number 202323310480.5 discloses a cast aluminium motor housing laser welding device, including welding machine base, planer-type precision motion module and laser welding head, the welding machine base is the level setting, planer-type precision motion module erects on the welding machine base, the laser welding head is vertical on the mobile terminal of planer-type precision motion module, the central point of welding machine base puts and is equipped with product precision positioning processing district, product precision positioning processing district still is equipped with nitrogen protection equipment, be equipped with the protection rack on the welding machine base. As can be seen from the above materials, the laser welding device in the prior art achieves the purpose of welding through the high temperature generated by the laser welding head, but in the actual use process, the high temperature melts the metal material during welding and is easy to oxidize with oxygen in the air, so that the purpose of protecting the metal material during welding needs to be achieved by using inert gas, while the conventional device has the disadvantages of fixed angle of the protecting gas nozzle, smaller blowing range and possibly influencing the welding quality due to the mixing of oxygen. Disclosure of Invention The invention aims to provide a motor shell laser welding device which aims to solve the problem that the welding quality is not comprehensively influenced by the protection gas in the background technology. The technical scheme is that the motor shell laser welding device comprises a horizontally placed operation platform, a bearing plate is arranged above the operation platform, a motor shell to be welded is fixed above the bearing plate, a laser welding head is arranged above the operation platform and fixedly installed on the front side of a connecting block, the connecting block drives the laser welding head to move through a moving mechanism, a filter box is fixedly installed at the rear end of the upper surface of the operation platform, smoke generated during welding enters the filter box through a negative pressure mechanism, a filter cover for filtering particles in the smoke is fixedly installed in the filter box, a protective gas spray head is rotatably installed at the lower end of the connecting block, argon is sprayed out of the protective gas spray head to protect welding position gas, a friction block is attached to the outer portion of a rotating shaft of the protective gas spray head, and the friction block drives the protective gas spray head to rotate through the upward and downward movement of a piston mechanism inside the connecting block. Preferably, the moving mechanism comprises a suppor