A laser welding device

Abstract

The present invention relates to the technical field of welding equipment, and specifically relates to a laser welding equipment, which includes a bearing plate. An L-shaped side plate is provided on the top of the bearing plate. A three-axis moving mechanism is provided on the inner top wall of the L-shaped side plate. A laser welder is installed on the three-axis moving mechanism. Clamping mechanisms are provided on the left and right sides of the top of the bearing plate. A first cooling mechanism is provided on the clamping mechanism. A heat exchange water tank is opened at the bottom of the bearing plate. A clamping hole groove is provided in the middle of the heat exchange water tank. A sealing cover plate is provided at the bottom of the heat exchange water tank. A water changing mechanism is provided at the bottom of the sealing cover plate. A positioning mechanism is provided on the water changing mechanism. A water storage tank and a collection tank are respectively provided on both sides of the bearing plate. A pushing mechanism is provided on the back of the L-shaped side plate. A second cooling mechanism is provided on the pushing mechanism. The present invention improves the overall positioning effect of the processed gear, and realizes three-stage cooling through the cooperation among the first cooling mechanism, the second cooling mechanism and the heat exchange water tank, so that the processed gear can be quickly cooled and the processing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and specifically to a laser welding equipment. Background Art

[0002] Laser welding is a high-precision and non-contact welding method, which can achieve precise welding of gears, effectively control the heat affected zone and ensure the welding quality. When the materials of the shaft part and the tooth part of the gear are inconsistent, in order to meet the high-power transmission requirements, the hardness of the tooth part material is higher than that of the shaft part. The tooth ring is sleeved outside the shaft and welded.

[0003] The Chinese invention patent with the publication number CN118492631A discloses a laser welding device for gear processing, including a housing and a processing gear placed above the housing. A fixed plate is fixedly installed at the upper end of the housing, a first reset spring is fixedly installed inside the fixed plate, and a clamping plate is fixedly installed inside the first reset spring. This laser welding device for gear processing is provided with a clamping plate that can fixedly clamp the processing gear. A first reset spring for extrusion is arranged between the clamping plate and the fixed plate, which can limit and fix the processing gear. At the same time, through the setting of the damping rod, when the first reset spring clamps and the processing gear vibrates, the reciprocating vibration force generated by the first reset spring can also be relieved under the setting of the damping rod to achieve the damping effect. At the same time, through the setting of the fireproof and anti-slip pad inside the clamping plate, it can avoid damage to the clamping plate caused by the increase in the temperature of the processing gear during laser welding, improve the service life of the device and the stability during welding.

[0004] However, the above patent still has the following deficiencies in actual use: 1. This patent can clamp the processing gear through the cooperation of the clamping plate and the first reset spring. However, the clamping plate only clamps the two sides of the tooth part of the processing gear and does not position the shaft part of the processing gear. Once the shaft part accidentally deviates, it will affect the welding quality between the tooth part and the shaft part. Moreover, the stability of clamping the tooth part by using the elasticity of the first reset spring is not good, and the overall positioning effect of the processing gear is not good, affecting the welding quality; 2. After the processing gear is welded, the temperature of the processing gear itself is too high. Although this patent can push the processing gear out of the welding area through the hydraulic rod, the temperature of the processing gear itself cannot be quickly reduced, and it needs to be naturally cooled by standing still. This method takes a long time and affects the processing efficiency of the processing gear. Summary of the Invention

[0005] In order to make up for the above deficiencies, the present invention provides a laser welding equipment to solve the problems of how to improve the overall positioning effect of the processing gear and how to improve the cooling efficiency of the processing gear as mentioned in the above background art.

[0006] The technical solution of the present invention is as follows:

[0007] A laser welding device, comprising a bearing plate, at the top of the tail end of the bearing plate is provided with an L-shaped side plate, on the inner top wall of the L-shaped side plate is provided with a three-axis moving mechanism, on the three-axis moving mechanism is installed a laser welder, on the left and right sides of the top of the bearing plate are provided with clamping mechanisms for clamping and positioning the tooth part, on the clamping mechanisms is provided with a first cooling mechanism, at the bottom of the bearing plate is opened a heat exchange water tank, in the middle of the heat exchange water tank is provided with a clamping hole groove, at the bottom of the heat exchange water tank is provided with a sealing cover plate, at the bottom of the sealing cover plate is provided with a water changing mechanism for changing the water inside the heat exchange water tank, on the water changing mechanism is provided with a positioning mechanism for clamping and positioning the shaft part, at the bottom of the bearing plate are provided with four support feet distributed in a rectangle, on both sides of the bearing plate are respectively provided with a water storage tank and a collection tank, at the top of both the water storage tank and the collection tank are provided with feeding windows, on the side walls of the water storage tank and the collection tank are provided with conveying pipes, on the conveying pipes are provided with water pumps, at the back of the L-shaped side plate is provided with a pushing mechanism, on the pushing mechanism is provided with a second cooling mechanism, and the first cooling mechanism and the water changing mechanism are both communicated with the water storage tank and the collection tank.

[0008] Preferably, the three-axis moving mechanism includes a first electric cylinder, a second electric cylinder and a first electric push rod. There are two first electric cylinders. On the sliding table of the second electric cylinder is installed a U-shaped frame. The two first electric cylinders are symmetrically arranged on the inner top wall of the L-shaped side plate. The second electric cylinder is horizontally arranged on the sliding tables of the two first electric cylinders. The first electric push rod is vertically arranged on the U-shaped frame. The laser welder is fixedly connected to the output end of the first electric push rod.

[0009] Preferably, the clamping mechanism includes two clamping components symmetrically arranged on the bearing plate. The clamping component includes a first mounting plate and a second electric push rod. The output end of the second electric push rod is installed with an L-shaped connecting plate. At the bottom of the L-shaped connecting plate is provided with an abutting component for positioning one tooth of the tooth part. The first mounting plate is vertically arranged on the top of the bearing plate. The second electric push rod is horizontally arranged on the back of the first mounting plate. The first cooling mechanism is arranged on the first mounting plate and is in transmission connection with the back of the L-shaped connecting plate.

[0010] Preferably, the abutting component includes a mounting block, an abutting motor and a bidirectional screw. An installation groove and two suspension plates are provided at the front of the mounting block. The two suspension plates are symmetrically arranged up and down. The installation groove is located between the two suspension plates. A first abutting block is provided at the bottom of the front end of the suspension plate. Two moving blocks are screwed on the bidirectional screw. A moving frame is installed on the moving block. Rotating seats are provided on both sides of the head end of the moving frame. An abutting plate is rotatably provided between the two rotating seats. The abutting plate is located between the two first abutting blocks. A hinge seat is provided on the outer wall of the abutting plate. An inclined support plate is hinged on the hinge seat. Two first sliding columns symmetrically arranged up and down are provided at one end of the inclined support plate. A first spring is provided at the tail end inside the moving frame. One end of the first spring is connected to a second abutting block. Second sliding columns are provided on both the upper and lower sides of the second abutting block. Moving chutes are provided on both the upper and lower inner walls of the moving frame. The first sliding column and the second sliding column are both slidably arranged in the moving chute. The mounting block is fixedly connected to the bottom of the L-shaped connecting plate. The bidirectional screw is rotatably arranged on the mounting block. The abutting motor is fixedly connected to one side of the mounting block, and the output end of the abutting motor is connected to the bidirectional screw.

[0011] Preferably, the first cooling mechanism includes two cooling components, and the two cooling components are respectively arranged on two first mounting plates. The cooling component includes a first guide rod, a guide tube and a transfer tube. There are two first guide rods and two guide tubes. A first piston is provided at the tail end of the first guide rod. A first water inlet head and a first water outlet head are provided at the tail end of the guide tube. A first water inlet check valve is provided in the first water inlet head, and a first water outlet check valve is provided in the first water outlet head. A plurality of atomizing nozzles are arranged at equal intervals on the transfer tube. Connecting tubes are provided at both ends of the transfer tube. Two symmetrically arranged first guide holes that are slidably matched with the first guide rod are provided on the first mounting plate. One end of the first guide rod is fixedly connected to the back of the L-shaped connecting plate. The two guide tubes are symmetrically arranged on the back of the first mounting plate. The first piston is hermetically slidably arranged in the guide tube. The two first water inlet heads are communicated with the water storage tank through pipelines, and the two first water outlet heads are respectively communicated with the two connecting tubes through pipelines.

[0012] Preferably, the water changing mechanism includes a U-shaped bottom plate, a third electric push rod, a synchronous plate, a water inlet bucket and a water outlet bucket. A second piston is slidably and sealingly arranged in the water inlet bucket, and a third piston is slidably and sealingly arranged in the water outlet bucket. Synchronous rods are arranged at the bottoms of the second piston and the third piston. Slide holes which are slidably matched with the synchronous rods are arranged at the bottoms of the water inlet bucket and the water outlet bucket. A second water inlet head is arranged on the outer wall of the water inlet bucket, and a second water inlet check valve is arranged in the second water inlet head. A second water outlet head is arranged on the outer wall of the water outlet bucket, and a second water outlet check valve is arranged in the second water outlet head. Water inlet holes and water outlet holes which are symmetrically arranged are arranged on the sealing cover plate. A third water inlet check valve is arranged in the water inlet hole, and a third water outlet check valve is arranged in the water outlet hole. The U-shaped bottom plate is arranged upside down on the bottom of the sealing cover plate. The third electric push rod is arranged vertically on the bottom of the U-shaped bottom plate. The synchronous plate is horizontally connected to the output end of the third electric push rod. The water inlet bucket and the water outlet bucket are symmetrically arranged on the bottom of the sealing cover plate. The water outlet hole is located in the water inlet bucket, and the water inlet hole is located in the water inlet bucket. Both of the two synchronous rods are fixedly connected with the synchronous plate. The second water inlet head is communicated with the water storage tank through a pipeline, and the second water outlet head is communicated with the collection tank through a pipeline.

[0013] Preferably, the positioning mechanism includes an abutting column, an installation cylinder and a fourth electric push rod. The head end of the abutting column is in a frustum shape. A stabilizing disc is arranged at the tail end of the abutting column, and a guiding groove is arranged on the stabilizing disc. A plurality of telescopic blocks which are evenly distributed at equal angles along the circumferential direction thereof are slidably arranged at the head end of the installation cylinder. An abutting wedge surface which is wedge surface matched with the head end of the abutting column is arranged at the bottom of the tail end of the telescopic block. A second mounting plate which is arranged vertically is arranged at the top of the tail end of the telescopic block. A second spring which is arranged horizontally is mounted on the second mounting plate. One end of the second spring is connected with the inner wall of the installation cylinder. A limiting convex strip is arranged at the head end of the telescopic block, and a guiding strip which is matched with the guiding groove is arranged on the inner wall of the installation cylinder. The installation cylinder is vertically mounted on the top of the synchronous plate. The installation cylinder is located in the clamping hole groove. The fourth electric push rod is arranged vertically on the synchronous plate. The fourth electric push rod is located on the installation cylinder, and the output end of the fourth electric push rod is fixedly connected with the stabilizing disc.

[0014] Preferably, the pushing mechanism includes a fifth electric push rod and a pushing block, the second cooling mechanism includes a second guide rod, a cylinder and a jet head. A third mounting plate vertically arranged is provided at the top of the pushing block. A mounting seat is provided at the top of the third mounting plate. A fourth piston is hermetically and slidably arranged in the cylinder. An air inlet and an air outlet are provided on the outer wall of the head end of the cylinder. A second guide hole which is in guiding cooperation with the second guide rod is provided at the head end of the cylinder. An intake check valve is provided in the air inlet, and an outlet check valve is provided in the air outlet. A suspension is further provided at the tail end of the bearing plate. An avoidance window is provided on the L-shaped side plate. The fifth electric push rod is horizontally arranged on the top of the suspension. The pushing block is fixedly connected to the output end of the fifth electric push rod. The cylinder is horizontally arranged on the top of the fifth electric push rod. The head end of the second guide rod is fixedly connected to the back of the third mounting plate. The tail end of the second guide rod is fixedly connected to the fourth piston. The jet head is fixedly connected to the mounting seat. The jet head is communicated with the air outlet through a pipeline.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] First, the present invention uses a three-axis moving mechanism to drive a laser welder for welding operations, improving welding flexibility. The tooth part is clamped by a clamping mechanism, and the shaft part is positioned and clamped by a positioning mechanism, improving the overall positioning effect of the processed gear. Three-stage cooling is achieved through the cooperation among the first cooling mechanism, the second cooling mechanism and the hot water exchange tank, enabling the processed gear to be quickly cooled and improving processing efficiency.

[0017] Second, when the clamping mechanism releases the positioning and clamping of the tooth part, the first cooling mechanism can simultaneously spray water mist to cool the processed gear by using the water mist.

[0018] Third, when pushing the processed gear after welding, the second cooling mechanism can simultaneously spray gas to cool the processed gear by using the sprayed gas, and can also disperse the smoke to avoid the smoke affecting subsequent welding operations. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of the laser welding equipment of the present invention;

[0020] Figure 2 is a three-dimensional structural schematic diagram of the three-axis moving mechanism of the present invention;

[0021] Figure 3 is a partial structural schematic diagram of the laser welding equipment of the present invention Figure 1 ;

[0022] Figure 4 is a structural schematic diagram of the abutting assembly of the present invention;

[0023] Figure 5 It is a partial cross-sectional view of the first cooling mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the partial structure of the laser welding equipment of the present invention Figure 2 ;

[0025] Figure 7 It is a partial cross-sectional view of the water changing mechanism of the present invention;

[0026] Figure 8 It is a partial cross-sectional view of the positioning mechanism of the present invention;

[0027] Figure 9 It is Figure 8 the enlarged view of part A in

[0028] Figure 10 the structural schematic diagram of the pushing mechanism and the third cooling mechanism of the present invention.

[0029] In the figure:

[0030] 1. Carrier plate; 11. L-shaped side plate; 111. Avoidance window; 12. Heat exchange water tank; 13. Clamping hole groove; 14. Sealing cover plate; 141. Water inlet hole; 1411. Third water inlet one-way valve; 142. Water outlet hole; 1421. Third water outlet one-way valve; 15. Support feet; 16. Suspension; 2. Three-axis moving mechanism; 21. First electric cylinder; 22. Second electric cylinder; 221. U-shaped frame; 23. First electric push rod; 3. Laser welder; 4. Clamping mechanism; 41. Clamping assembly; 411. First mounting plate; 412. Second electric push rod; 4121. L-shaped connecting plate; 42. Contact component; 421. Mounting block; 4211. Mounting groove; 422. Contact motor; 423. Bidirectional screw; 424. Hanging plate; 4241. First contact block; 425. Moving frame; 4251. Rotating seat; 4252. First spring; 4253. Second contact block; 4254. Second sliding column; 4255. Moving chute; 426. Contact plate; 4261. Hinge seat; 427. Diagonal support plate; 4271. First sliding column; 5. First cooling mechanism; 51. First guide rod; 511. First piston; 52. Guide tube; 53. Transfer tube; 531. Atomizing nozzle; 532. Connecting tube; 54. First water inlet head; 541. First water inlet one-way valve; 55. First water outlet head; 551. First water outlet one-way valve; 6. Water changing mechanism; 61. U-shaped bottom plate; 62. Third electric push rod; 63. Synchronization plate; 64. Water inlet bucket; 641. Second piston; 642. Second water inlet head; 6421. Second water inlet one-way valve; 65. Water outlet bucket; 651. Third piston; 652. Second water outlet head; 6521. Second water outlet one-way valve; 66. Synchronization rod; 7. Positioning mechanism; 71. Contact column; 72. Mounting cylinder; 721. Guide strip; 73. Fourth electric push rod; 74. Stabilizing plate; 741. Guide groove; 75. Telescopic block; 751. Contact wedge surface; 752. Second mounting plate; 753. Second spring; 754. Limiting convex strip; 8. Water storage tank; 81. Feeding window; 82. Delivery pipe; 83. Water pump; 9. Collection water tank; 10. Pushing mechanism; 101. Fifth electric push rod; 102. Pushing block; 103. Third mounting plate; 104. Mounting seat; 20. Second cooling mechanism; 201. Second guide rod; 202. Air cylinder; 2021. Fourth piston; 203. Air inlet; 204. Air outlet; 205. Jet head; 30. Tooth part; 40. Shaft part. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1-10 , the technical solution is described in detail by the following embodiments of the present invention:

[0033] A laser welding device includes a carrier plate 1. At the top of the tail end of the carrier plate 1, there is an L-shaped side plate 11. On the inner top wall of the L-shaped side plate 11, there is a three-axis moving mechanism 2. A laser welder 3 is installed on the three-axis moving mechanism 2. On the left and right sides of the top of the carrier plate 1, there are clamping mechanisms 4 for clamping and positioning the tooth part 30. A first cooling mechanism 5 is provided on the clamping mechanism 4. A water exchange tank 12 is opened at the bottom of the carrier plate 1. A clamping hole groove 13 is provided in the middle of the water exchange tank 12. A sealing cover plate 14 is provided at the bottom of the water exchange tank 12. At the bottom of the sealing cover plate 14, there is a water exchange mechanism 6 for exchanging water inside the water exchange tank 12. A positioning mechanism 7 for clamping and positioning the shaft part 40 is provided on the water exchange mechanism 6. Four support feet 15 distributed in a rectangle are provided at the bottom of the carrier plate 1. A water storage tank 8 and a collection tank 9 are respectively provided on both sides of the carrier plate 1. Feeding windows 81 are provided at the tops of the water storage tank 8 and the collection tank 9. A delivery pipe 82 is provided on the side walls of the water storage tank 8 and the collection tank 9. A water pump 83 is provided on the delivery pipe 82. A pushing mechanism 10 is provided on the back of the L-shaped side plate 11. A second cooling mechanism 20 is provided on the pushing mechanism 10. The first cooling mechanism 5 and the water exchange mechanism 6 are both communicated with the water storage tank 8 and the collection tank 9.

[0034] The present invention uses the three-axis moving mechanism 2 to drive the laser welder 3 to perform welding operations, improving the welding flexibility. The tooth part 30 is positioned and clamped by the clamping mechanism 4, and the shaft part 40 is positioned and clamped by the positioning mechanism 7, improving the overall positioning effect of the processed gear. Three-stage cooling is achieved through the cooperation among the first cooling mechanism 5, the second cooling mechanism 20 and the water exchange tank 12, enabling the processed gear to be quickly cooled and improving the processing efficiency.

[0035] The three-axis moving mechanism 2 includes a first electric cylinder 21, a second electric cylinder 22 and a first electric push rod 23. There are two first electric cylinders 21. A U-shaped frame 221 is installed on the slide table of the second electric cylinder 22. The two first electric cylinders 21 are symmetrically arranged on the inner top wall of the L-shaped side plate 11. The second electric cylinder 22 is horizontally arranged on the slide tables of the two first electric cylinders 21. The first electric push rod 23 is vertically arranged on the U-shaped frame 221. The laser welder 3 is fixedly connected to the output end of the first electric push rod 23.

[0036] The first electric cylinder 21 can drive the second electric cylinder 22 to move left and right. The second electric cylinder 22 can drive the U-shaped frame 221 and the first electric push rod 23 to move back and forth. The first electric push rod 23 drives the laser welder 3 to move up and down, that is, the laser welder 3 can perform three-axis movement of back and forth, left and right, and up and down.

[0037] The clamping mechanism 4 includes two clamping components 41 symmetrically arranged on the bearing plate 1. The clamping component 41 includes a first mounting plate 411 and a second electric push rod 412. The output end of the second electric push rod 412 is equipped with an L-shaped connecting plate 4121. The bottom of the L-shaped connecting plate 4121 is provided with an abutting component 42 for positioning a tooth of the tooth part 30. The first mounting plate 411 is vertically arranged on the top of the bearing plate 1, and the second electric push rod 412 is horizontally arranged on the back of the first mounting plate 411. The first cooling mechanism 5 is arranged on the first mounting plate 411 and is in transmission connection with the back of the L-shaped connecting plate 4121.

[0038] The abutting component 42 includes a mounting block 421, an abutting motor 422 and a bidirectional screw 423. The front part of the mounting block 421 is provided with a mounting groove 4211 and two hanging plates 424. The two hanging plates 424 are symmetrically arranged up and down. The mounting groove 4211 is located between the two hanging plates 424. The bottom of the front end of the hanging plate 424 is provided with a first abutting block 4241. Two moving blocks are screwed on the bidirectional screw 423. A moving frame 425 is installed on the moving block. Rotating seats 4251 are arranged on both sides of the head end of the moving frame 425. An abutting plate 426 is rotatably arranged between the two rotating seats 4251. The abutting plate 426 is located between the two first abutting blocks 4241. A hinge seat 4261 is arranged on the outer wall of the abutting plate 426. An inclined support plate 427 is hinged on the hinge seat 4261. One end of the inclined support plate 427 is provided with two first sliding columns 4271 symmetrically arranged up and down. A first spring 4252 is arranged at the tail end inside the moving frame 425. One end of the first spring 4252 is connected with a second abutting block 4253. Second sliding columns 4254 are arranged on both the upper and lower sides of the second abutting block 4253. Moving chutes 4255 are arranged on both the upper and lower inner walls of the moving frame 425. The first sliding columns 4271 and the second sliding columns 4254 are both slidably arranged in the moving chutes 4255. The mounting block 421 is fixedly connected to the bottom of the L-shaped connecting plate 4121. The bidirectional screw 423 is rotatably arranged on the mounting block 421. The abutting motor 422 is fixedly connected to one side of the mounting block 421, and the output end of the abutting motor 422 is connected with the bidirectional screw 423.

[0039] The second electric push rod 412 drives the L-shaped connecting plate 4121 to move forward. The L-shaped connecting plate 4121 can drive the abutting assembly 42 to move forward. The ends of the two abutting plates 426 away from the rotating seat 4251 gradually approach both sides of a tooth on the tooth part 30 respectively. Then, the abutting plates 426 abut against the side wall of the tooth and rotate. The abutting plates 426 drive the hinge seats 4261 to rotate synchronously around the rotation point of the rotating seat 4251. The hinge seats 4261 drive the other ends of the diagonal braces 427 to move synchronously. Then, the two first sliding columns 4271 at one end of the diagonal brace 427 move in the moving chute 4255. One end of the diagonal brace 427 abuts against the second abutting block 4253. The second abutting block 4253 moves, and the second sliding column 4254 moves synchronously in the moving chute 4255, and the first spring 4252 is compressed. Then, the end of the tooth abuts against the two first abutting blocks 4241. The elastic force of the two first springs 4252 can make the two abutting plates 426 tightly abut against the tooth, that is, the tooth part 30 can be stably positioned and clamped. The abutting motor 422 can drive the bidirectional screw 423 to rotate. The bidirectional screw 423 can drive the two moving blocks to move. The moving directions of the two moving blocks are always opposite, so that the entire clamping mechanism 4 can clamp and position processing gears of various sizes.

[0040] The first cooling mechanism 5 includes two cooling components. The two cooling components are respectively arranged on the two first mounting plates 411. The cooling component includes a first guide rod 51, a guide tube 52 and a transfer tube 53. There are two first guide rods 51 and two guide tubes 52. A first piston 511 is arranged at the tail end of the first guide rod 51. A first water inlet head 54 and a first water outlet head 55 are arranged at the tail end of the guide tube 52. A first water inlet check valve 541 is arranged in the first water inlet head 54. A first water outlet check valve 551 is arranged in the first water outlet head 55. A number of atomizing nozzles 531 are arranged at equal intervals on the transfer tube 53. Connecting tubes 532 are arranged at both ends of the transfer tube 53. Two symmetrically arranged first guide holes that are slidably matched with the first guide rod 51 are opened on the first mounting plate 411. One end of the first guide rod 51 is fixedly connected to the back of the L-shaped connecting plate 4121. The two guide tubes 52 are symmetrically arranged on the back of the first mounting plate 411. The first piston 511 is hermetically and slidably arranged in the guide tube 52. The two first water inlet heads 54 are both communicated with the water storage tank 8 through pipelines. The two first water outlet heads 55 are both communicated with the two connecting tubes 532 through pipelines respectively.

[0041] When the second electric push rod 412 drives the L-shaped connecting plate 4121 to move forward, the L-shaped connecting plate 4121 also drives the two first guide rods 51 to move forward synchronously. The first guide rods 51 drive the first pistons 511 to move forward synchronously in the guide tubes 52. The first pistons 511 generate a suction force in the guide tubes 52. This suction force can cause the water in the water storage tank 8 to enter the first water inlet head 54 through the pipeline, and then enter the guide tubes 52 through the first water inlet check valve 541. After the welding work is completed, the second electric push rod 412 drives the L-shaped connecting plate 4121 to move backward, that is, the clamping operation on the processed gear is released. The L-shaped connecting plate 4121 drives the two first guide rods 51 to move backward, and the first guide rods 51 drive the first pistons 511 to move backward. The first pistons 511 apply a squeezing force to the guide tubes 52. This squeezing force can squeeze and discharge the water in the guide tubes 52 from the first water outlet head 55. The water enters the connecting pipe 532 through the first water outlet check valve 551 and the pipeline, then enters the transfer pipe 53, and finally sprays out from all the atomizing nozzles 531. The atomized water can not only exchange heat and cool down the high temperature around the processed gear, but also exchange heat and cool down the surface of the processed gear.

[0042] The water changing mechanism 6 includes a U-shaped bottom plate 61, a third electric push rod 62, a synchronous plate 63, a water inlet bucket 64 and a water outlet bucket 65. A second piston 641 is sealed and slidably arranged in the water inlet bucket 64, and a third piston 651 is sealed and slidably arranged in the water outlet bucket 65. Synchronous rods 66 are arranged at the bottoms of both the second piston 641 and the third piston 651. Slide holes slidably matched with the synchronous rods 66 are arranged at the bottoms of both the water inlet bucket 64 and the water outlet bucket 65. A second water inlet head 642 is arranged on the outer wall of the water inlet bucket 64, and a second water inlet check valve 6421 is arranged in the second water inlet head 642. A second water outlet head 652 is arranged on the outer wall of the water outlet bucket 65, and a second water outlet check valve 6521 is arranged in the second water outlet head 652. Symmetrically arranged water inlet holes 141 and water outlet holes 142 are arranged on the sealing cover plate 14. A third water inlet check valve 1411 is arranged in the water inlet hole 141, and a third water outlet check valve 1421 is arranged in the water outlet hole 142. The U-shaped bottom plate 61 is arranged upside down on the bottom of the sealing cover plate 14. The third electric push rod 62 is arranged vertically on the bottom of the U-shaped bottom plate 61. The synchronous plate 63 is horizontally connected to the output end of the third electric push rod 62. The water inlet bucket 64 and the water outlet bucket 65 are symmetrically arranged on the bottom of the sealing cover plate 14. The water outlet hole 142 is located in the water inlet bucket 64, and the water inlet hole 141 is located in the water inlet bucket 64. Both of the two synchronous rods 66 are fixedly connected to the synchronous plate 63. The second water inlet head 642 is communicated with the water storage tank 8 through a pipeline, and the second water outlet head 652 is communicated with the collection water tank 9 through a pipeline.

[0043] The high temperature generated by the laser welder 3 during the welding of the processed gear can continuously exchange heat with the water in the heat exchange water tank 12. Of course, the bearing plate 1 needs to have better thermal conductivity. After the processed gear is welded, the water in the heat exchange water tank 12 also rises, so that the heat exchange operation cannot be carried out on the next processed gear. The water in the heat exchange water tank 12 needs to be replaced with water at a lower temperature. The specific water replacement process is as follows:

[0044] When the third electric push rod 62 drives the synchronous plate 63 to move downward, the synchronous plate 63 drives the two synchronous rods 66 to move downward synchronously. One synchronous rod 66 drives the second piston 641 to move downward in the water inlet bucket 64. The second piston 641 generates a suction force in the water inlet bucket 64. This suction force can pump the low-temperature water in the water storage tank 8 into the second water inlet head 642 through the pipeline, and then enter the water inlet bucket 64 through the second water inlet one-way valve 6421. The other synchronous rod 66 drives the third piston 651 to move downward in the water outlet bucket 65. The third piston 651 also generates a suction force in the water outlet bucket 65. This suction force can draw the high-temperature water in the heat exchange water tank 12 into the water outlet bucket 65 through the third water inlet one-way valve 1411. When the third electric push rod 62 drives the synchronous plate 63 to move upward, the synchronous plate 63 drives the two synchronous rods 66 to move upward synchronously. One synchronous rod 66 drives the second piston 641 to move upward in the water inlet bucket 64. The second piston 641 generates a squeezing force in the water inlet bucket 64. This squeezing force can squeeze the low-temperature water in the water inlet bucket 64. The low-temperature water can enter the heat exchange water tank 12 through the third water outlet one-way valve 1421. The other synchronous rod 66 drives the third piston 651 to move upward in the water outlet bucket 65. The third piston 651 also generates a squeezing force in the water outlet bucket 65. This squeezing force squeezes the high-temperature water in the water outlet bucket 65 into the second water outlet head 652, and then enters the collection water tank 9 through the second water outlet one-way valve 6521 and the pipeline. The high-temperature water is naturally cooled in the collection water tank 9. The water in the collection water tank 9 can be re-transported to the water storage tank 8. A pipeline is connected to the delivery pipe 82 on the collection water tank 9 and the pipeline is led into the water storage tank 8. Then, through the operation of the water pump 83, the delivery can be completed to realize the recycling of water. Of course, there will be losses during the recycling of water. Therefore, a pipeline is connected to the delivery pipe 82 on the water storage tank 8 and the pipeline is connected to the water source. Then, the water pump 83 pumps the low-temperature water at the water source into the water storage tank 8 to ensure sufficient low-temperature water.

[0045] The positioning mechanism 7 includes a contact post 71, a mounting cylinder 72, and a fourth electric push rod 73. The head end of the contact post 71 is frustum-shaped. A stabilizing disk 74 is provided at the tail end of the contact post 71. A guiding groove 741 is provided on the stabilizing disk 74. A plurality of telescopic blocks 75 are slidably provided at the head end of the mounting cylinder 72 and are equally angularly distributed along its circumference. At the bottom of the tail end of the telescopic block 75, there is a contact wedge surface 751 that is in wedge fit with the head end wedge surface of the contact post 71. At the top of the tail end of the telescopic block 75, there is a second mounting plate 752 arranged vertically. A second spring 753 arranged horizontally is mounted on the second mounting plate 752. One end of the second spring 753 is connected to the inner wall of the mounting cylinder 72. A limiting rib 754 is provided at the head end of the telescopic block 75. A guiding strip 721 that cooperates with the guiding groove 741 is provided on the inner wall of the mounting cylinder 72. The mounting cylinder 72 is vertically mounted on the top of the synchronous plate 63. The mounting cylinder 72 is located within the clamping hole groove 13. The fourth electric push rod 73 is arranged vertically on the synchronous plate 63. The fourth electric push rod 73 is located on the mounting cylinder 72. The output end of the fourth electric push rod 73 is fixedly connected to the stabilizing disk 74.

[0046] When the third electric push rod 62 drives the synchronous plate 63 to move upward, the mounting cylinder 72 and the fourth electric push rod 73 also move upward synchronously. The head end of the mounting cylinder 72 extends out of the clamping hole groove 13, and the head end of the mounting cylinder 72 enters the hole of the shaft portion 40. Then, the fourth electric push rod 73 drives the stabilizing disk 74 to move upward. The stabilizing disk 74 drives the contact post 71 to move upward. The cooperation of the guiding groove 741 and the guiding strip 721 improves the stability of the upward movement of the stabilizing disk 74 and the contact post 71. The head end of the contact post 71 can contact all the contact wedge surfaces 751 of the telescopic blocks 75. Then, all the telescopic blocks 75 extend outwards. The telescopic blocks 75 drive the second mounting plate 752 to move synchronously. The second spring 753 is compressed. The head end of the telescopic block 75 contacts the inner wall of the hole of the shaft portion 40, thus realizing the positioning and clamping of the shaft portion 40. When the third electric push rod 62 drives the synchronous plate 63 to move downward, the contact post 71 also moves downward accordingly. The contact post 71 gradually disengages from all the telescopic blocks 75. The second spring 753 can drive the telescopic blocks 75 to reset. The positioning and clamping of the shaft portion 40 are released. The limiting rib 754 can limit the retracted position of the telescopic blocks 75.

[0047] The pushing mechanism 10 includes a fifth electric push rod 101 and a pushing block 102. The second cooling mechanism 20 includes a second guide rod 201, a cylinder 202, and a jet head 205. A third mounting plate 103 is vertically provided on the top of the pushing block 102. A mounting seat 104 is provided on the top of the third mounting plate 103. A fourth piston 2021 is hermetically and slidably provided in the cylinder 202. An air inlet 203 and an air outlet 204 are provided on the outer wall of the head end of the cylinder 202. A second guide hole that is in guiding cooperation with the second guide rod 201 is provided at the head end of the cylinder 202. An intake check valve is provided in the air inlet 203, and an outlet check valve is provided in the air outlet 204. A suspension 16 is further provided at the tail end of the bearing plate 1. An avoidance window 111 is provided on the L-shaped side plate 11. The fifth electric push rod 101 is horizontally provided on the top of the suspension 16. The pushing block 102 is fixedly connected to the output end of the fifth electric push rod 101. The cylinder 202 is horizontally provided on the top of the fifth electric push rod 101. The head end of the second guide rod 201 is fixedly connected to the back of the third mounting plate 103. The tail end of the second guide rod 201 is fixedly connected to the fourth piston 2021. The jet head 205 is fixedly connected to the mounting seat 104. The jet head 205 is communicated with the air outlet 204 through a pipeline.

[0048] After welding is completed, the fifth electric push rod 101 drives the pushing block 102 to move forward. The pushing block 102 drives the third mounting plate 103 to move forward synchronously. The third mounting plate 103 drives the second guide rod 201 to move forward synchronously. The second guide rod 201 drives the fourth piston 2021 to move forward in the cylinder 202. The fourth piston 2021 generates a squeezing force in the cylinder 202. The gas passes through the outlet check valve, the air outlet 204, and the pipeline and enters the jet head 205. Then the gas is ejected from the jet head 205. The ejected gas can not only perform heat exchange operation with the processed gear, but also blow the air around the processed gear outward, avoiding the influence of smoke on the welding operation of the next processed gear. The fifth electric push rod 101 drives the pushing block 102 to move backward. Then the second guide rod 201 drives the fourth piston 2021 to move backward in the cylinder 202. The fourth piston 2021 generates a suction force in the cylinder 202. The outside air can enter the cylinder 202 through the intake check valve and the air inlet 203.

[0049] Working principle: First, place the processed gear on the top of the bearing plate 1, align the hole of the shaft part 40 with the clamping hole groove 13, then the third electric push rod 62 on the water changing mechanism 6 works to drive the synchronous plate 63 and the positioning mechanism 7 to move upward. After that, the positioning mechanism 7 works to position the shaft part 40, and the water changing mechanism 6 also changes the water in the hot water changing tank 12. Then the clamping mechanism 4 works, and the clamping mechanism 4 clamps and positions the tooth part 30. After that, the three-axis moving mechanism 2 drives the laser welder 3 to weld the processed gear. During welding, the water in the hot water changing tank 12 can cool the processed gear for the first time. After welding is completed, the clamping mechanism 4 releases the clamping and positioning of the tooth part 30. When releasing, the first cooling mechanism 5 can spray water mist to cool the processed gear for the second time. Then the pushing mechanism 10 works to push the processed gear forward. When the pushing mechanism 10 works, the second cooling mechanism 20 can blow air to cool the processed gear for the third time.

Claims

1. A laser welding device, characterized in that: It includes a bearing plate (1). At the top of the tail end of the bearing plate (1), there is an L-shaped side plate (11). On the inner top wall of the L-shaped side plate (11), there is a three-axis moving mechanism (2). A laser welder (3) is installed on the three-axis moving mechanism (2). On the left and right sides of the top of the bearing plate (1), there is a clamping mechanism (4) for clamping and positioning the tooth part (30). A first cooling mechanism (5) is arranged on the clamping mechanism (4). The clamping mechanism (4) includes two clamping components (41) symmetrically arranged on the bearing plate (1). The clamping component (41) includes a first mounting plate (411) and a second electric push rod (412). The output end of the second electric push rod (412) is installed with an L-shaped connecting plate (4121). At the bottom of the L-shaped connecting plate (4121), there is an abutting component (42) for positioning one tooth of the tooth part (30). The first mounting plate (411) is vertically arranged on the top of the bearing plate (1). The second electric push rod (412) is horizontally arranged on the back of the first mounting plate (411). The first cooling mechanism (5) is arranged on the first mounting plate (411) and is in transmission connection with the back of the L-shaped connecting plate (4121). The abutting component (42) includes a mounting block (421), an abutting motor (422), and a bidirectional screw rod (423). In the front part of the mounting block (421), there is a mounting groove (4211) and two hanging plates (424). The two hanging plates (424) are symmetrically arranged up and down. The mounting groove (4211) is located between the two hanging plates (424). At the bottom of the front end of the hanging plate (424), there is a first abutting block (4241). Two moving blocks are screwed on the bidirectional screw rod (423). A moving frame (425) is installed on the moving block. On both sides of the head end of the moving frame (425), there are rotating seats (4251). An abutting plate (426) is rotatably arranged between the two rotating seats (4251). The abutting plate (426) is located between the two first abutting blocks (4241). On the outer wall of the abutting plate (426), there is a hinge seat (4261). An inclined support plate (427) is hinged on the hinge seat (4261). At one end of the inclined support plate (427), there are two first sliding columns (4271) symmetrically arranged up and down. At the tail end inside the moving frame (425), there is a first spring (4252). One end of the first spring (4252) is connected with a second abutting block (4253). On the upper and lower sides of the second abutting block (4253), there are second sliding columns (4254). On the upper and lower inner walls of the moving frame (425), there are moving chutes (4255). The first sliding columns (4271) and the second sliding columns (4254) are both slidably arranged in the moving chutes (4255). The mounting block (421) is fixedly connected to the bottom of the L-shaped connecting plate (4121). The bidirectional screw rod (423) is rotatably arranged on the mounting block (421).The abutting motor (422) is fixedly connected to one side of the mounting block (421), and the output end of the abutting motor (422) is connected to the bidirectional screw rod (423). The first cooling mechanism (5) includes two cooling components, and the two cooling components are respectively arranged on the two first mounting plates (411). The cooling component includes a first guide rod (51), a guide tube (52) and a transfer tube (53). There are two first guide rods (51) and two guide tubes (52). The tail end of the first guide rod (51) is provided with a first piston (511). The tail end of the guide tube (52) is provided with a first water inlet head (54) and a first water outlet head (55). The first water inlet head (54) is provided with a first water inlet check valve (541), and the first water outlet head (55) is provided with a first water outlet check valve (551). The transfer tube (53) is provided with a plurality of atomizing nozzles (531) arranged at equal intervals. Both ends of the transfer tube (53) are provided with connecting tubes (532). The first mounting plate (411) is provided with two symmetrically arranged first guide holes that are slidably matched with the first guide rod (51). One end of the first guide rod (51) is fixedly connected to the back of the L-shaped connecting plate (4121). The two guide tubes (52) are symmetrically arranged on the back of the first mounting plate (411). The first piston (511) is hermetically and slidably arranged in the guide tube (52). Both first water inlet heads (54) are communicated with the water storage tank (8) through pipelines. Both first water outlet heads (55) are respectively communicated with the two connecting tubes (532) through pipelines. A heat exchange water tank (12) is opened at the bottom of the bearing plate (1). A clamping hole groove (13) is arranged in the middle of the heat exchange water tank (12). A sealing cover plate (14) is arranged at the bottom of the heat exchange water tank (12). A water changing mechanism (6) for changing the water inside the heat exchange water tank (12) is arranged at the bottom of the sealing cover plate (14). A positioning mechanism (7) for clamping and positioning the shaft part (40) is arranged on the water changing mechanism (6). Four support feet (15) distributed in a rectangle are arranged at the bottom of the bearing plate (1). A water storage tank (8) and a collection water tank (9) are respectively arranged on both sides of the bearing plate (1). Feeding windows (81) are arranged at the tops of the water storage tank (8) and the collection water tank (9). A conveying pipe (82) is arranged on the side wall of the water storage tank (8) and the collection water tank (9). A water pump (83) is arranged on the conveying pipe (82). A pushing mechanism (10) is arranged on the back of the L-shaped side plate (11). A second cooling mechanism (20) is arranged on the pushing mechanism (10). The first cooling mechanism (5) and the water changing mechanism (6) are both communicated with the water storage tank (8) and the collection water tank (9).

2. The laser welding device according to claim 1, wherein: The three-axis moving mechanism (2) includes a first electric cylinder (21), a second electric cylinder (22) and a first electric push rod (23). There are two first electric cylinders (21). A U-shaped frame (221) is installed on the sliding table of the second electric cylinder (22). The two first electric cylinders (21) are symmetrically arranged on the inner top wall of the L-shaped side plate (11). The second electric cylinder (22) is horizontally arranged on the sliding tables of the two first electric cylinders (21). The first electric push rod (23) is vertically arranged on the U-shaped frame (221). The laser welder (3) is fixedly connected to the output end of the first electric push rod (23).

3. The laser welding device according to claim 1, characterized in that: The water changing mechanism (6) includes a U-shaped bottom plate (61), a third electric push rod (62), a synchronous plate (63), a water inlet bucket (64) and a water outlet bucket (65). A second piston (641) is hermetically and slidably arranged in the water inlet bucket (64). A third piston (651) is hermetically and slidably arranged in the water outlet bucket (65). Synchronous rods (66) are arranged at the bottoms of the second piston (641) and the third piston (651). Slide holes for slidably matching with the synchronous rods (66) are arranged at the bottoms of the water inlet bucket (64) and the water outlet bucket (65). A second water inlet head (642) is arranged on the outer wall of the water inlet bucket (64). A second water inlet check valve (6421) is arranged in the second water inlet head (642). A second water outlet head (652) is arranged on the outer wall of the water outlet bucket (65). A second water outlet check valve (6521) is arranged in the second water outlet head (652). Symmetrically arranged water inlet holes (141) and water outlet holes (142) are arranged on the sealing cover plate (14). A third water inlet check valve (1411) is arranged in the water inlet hole (141). A third water outlet check valve (1421) is arranged in the water outlet hole (142). The U-shaped bottom plate (61) is inverted and arranged on the bottom of the sealing cover plate (14). The third electric push rod (62) is vertically arranged on the bottom of the U-shaped bottom plate (61). The synchronous plate (63) is horizontally connected to the output end of the third electric push rod (62). The water inlet bucket (64) and the water outlet bucket (65) are symmetrically arranged on the bottom of the sealing cover plate (14). The water outlet hole (142) is located in the water inlet bucket (64). The water inlet hole (141) is located in the water inlet bucket (64). The two synchronous rods (66) are fixedly connected to the synchronous plate (63). The second water inlet head (642) is communicated with the water storage tank (8) through a pipeline. The second water outlet head (652) is communicated with the collection water tank (9) through a pipeline.

4. The laser welding device according to claim 3, wherein: The positioning mechanism (7) includes a contact post (71), a mounting cylinder (72), and a fourth electric push rod (73). The head end of the contact post (71) is frustum-shaped. A stabilizing disk (74) is provided at the tail end of the contact post (71). A guiding groove (741) is provided on the stabilizing disk (74). A plurality of telescopic blocks (75) are slidably provided at the head end of the mounting cylinder (72) and are equally angularly distributed along its circumference. A contact wedge surface (751) that is wedge-shaped and mates with the head end of the contact post (71) is provided at the bottom of the tail end of the telescopic block (75). A second mounting plate (752) is provided at the top of the tail end of the telescopic block (75) and is vertically arranged. A second spring (753) is horizontally arranged and mounted on the second mounting plate (752). One end of the second spring (753) is connected to the inner wall of the mounting cylinder (72). A limiting rib (754) is provided at the head end of the telescopic block (75). A guiding strip (721) that mates with the guiding groove (741) is provided on the inner wall of the mounting cylinder (72). The mounting cylinder (72) is vertically mounted on the top of the synchronous plate (63). The mounting cylinder (72) is located within the clamping hole groove (13). The fourth electric push rod (73) is vertically arranged on the synchronous plate (63). The fourth electric push rod (73) is located on the mounting cylinder (72). The output end of the fourth electric push rod (73) is fixedly connected to the stabilizing disk (74).

5. The laser welding device according to claim 1, wherein: The pushing mechanism (10) includes a fifth electric push rod (101) and a pushing block (102). The second cooling mechanism (20) includes a second guiding rod (201), an air cylinder (202), and a jet head (205). A third mounting plate (103) is vertically arranged on the top of the pushing block (102). A mounting seat (104) is provided on the top of the third mounting plate (103). A fourth piston (2021) is hermetically and slidably provided within the air cylinder (202). An air inlet (203) and an air outlet (204) are provided on the outer wall of the head end of the air cylinder (202). A second guiding hole that is guidingly mated with the second guiding rod (201) is provided at the head end of the air cylinder (202). An air inlet check valve is provided within the air inlet (203). An air outlet check valve is provided within the air outlet (204). A suspension (16) is further provided at the tail end of the bearing plate (1). An avoidance window (111) is provided on the L-shaped side plate (11). The fifth electric push rod (101) is horizontally arranged on the top of the suspension (16). The pushing block (102) is fixedly connected to the output end of the fifth electric push rod (101). The air cylinder (202) is horizontally arranged on the top of the fifth electric push rod (101). The head end of the second guiding rod (201) is fixedly connected to the back of the third mounting plate (103). The tail end of the second guiding rod (201) is fixedly connected to the fourth piston (2021). The jet head (205) is fixedly connected to the mounting seat (104). The jet head (205) is communicated with the air outlet (204) through a pipeline.

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