Laser welding device

Abstract

The present application discloses a laser welding device, which belongs to the field of welding and cutting production, and includes a base, a support plate and a laser welding assembly, wherein the laser welding assembly includes a laser welding gun, a workbench is arranged on the base, a conveying mechanism for transporting the workpiece to be processed and docking with the workbench is arranged on one side of the base, a guide track for guiding the processed workpiece to enter the next process is arranged on the base; a processing mechanism for clamping the workpiece to be processed is arranged on the workbench, and the processing mechanism includes a working plate arranged on the base, a limit plate and a clamping plate slidably arranged on both sides of the working plate for clamping the workpiece to be processed, and a control assembly for adjusting the distance between the limit plate and the clamping plate is arranged in the working plate; a lifting assembly for moving the processing mechanism in the vertical direction is arranged in the base. The present application has the effect of saving manpower and improving the processing efficiency of the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of welding and cutting production, and in particular to a laser welding and cutting device. Background Art

[0002] Laser processing technology is a processing technology that uses the characteristics of the interaction between laser beam and matter to cut, weld, surface treat, punch and micro-process materials. As an advanced manufacturing technology, it has been widely used in many fields such as automobile manufacturing, aerospace, instrumentation, industrial processing, etc.

[0003] In the related art, a Chinese invention patent application with publication number CN111889884A discloses a two-axis laser welding device, which includes a laser fiber connector, a fiber connector seat, a first upper slip ring, a first lower slip ring, a first transmission gear, a first servo motor, a first motor gear, an inner light guide wall, a mounting bracket, a laser reflector, a second upper slip ring, a second lower slip ring, a second transmission gear, a second servo motor, a second motor gear and a laser welding gun. The central axis of the fiber connector seat, the first upper slip ring, the first lower slip ring and the first transmission gear forms an upper light path, and the central axis of the second upper slip ring, the second lower slip ring, the second transmission gear and the second motor gear forms a lower light path. The upper light path is connected to the light guide hole of the inner light guide wall, and the lower light path is perpendicular to the central axis of the inner light guide wall. The laser reflector can reflect the laser emitted from the light guide hole on the lower surface to the lower light path, and the lower light path is connected to the laser inlet of the laser welding gun.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when an operator uses a laser welding device to perform welding and cutting operations on an integrated circuit board or other lightweight workpiece to be processed, the workpiece to be processed needs to be fixed first, and then after the welding and cutting process is completed, the operator releases the fixation of the workpiece and finally sends the workpiece to the next process. The processes are set independently of each other, and the manual transfer of workpieces between processes is cumbersome, resulting in low processing efficiency. Summary of the invention

[0005] In order to improve the processing efficiency of workpieces, the present application provides a laser welding device.

[0006] The laser welding device provided in this application adopts the following technical solution:

[0007] A laser welding device comprises a base, a support plate fixedly connected to the base, and a laser welding assembly installed on the support plate for performing welding processes on a workpiece to be processed, the laser welding assembly comprises a laser welding gun, a workbench is arranged on the base, a conveying mechanism for transporting the workpiece to be processed and docking with the workbench is arranged on one side of the base, a guide track for guiding the processed workpiece to enter the next process is arranged on the base; a processing mechanism for clamping the workpiece to be processed is arranged on the workbench, the processing mechanism comprises a working plate penetrated on the base, a limit plate and a clamping plate slidably arranged on both sides of the working plate for clamping the workpiece to be processed, a control assembly for adjusting the distance between the limit plate and the clamping plate is arranged in the working plate; a lifting assembly for moving the processing mechanism in the vertical direction is arranged in the base.

[0008] By adopting the above technical scheme, the setting of the conveying mechanism is convenient for transporting the workpiece to be processed. When the workpiece to be processed enters the workbench, the operator uses the control component to reduce the distance between the limit plate and the clamping plate to clamp the workpiece to be processed. Then the operator uses the lifting component to adjust the height of the processing mechanism, and then adjusts the height of the workpiece to be processed, which is convenient for the operator to use the laser welding gun to perform welding and cutting on the workpiece to be processed. When the workpiece completes the welding and cutting process, the operator again uses the control component to increase the distance between the limit plate and the clamping plate to release the workpiece, and the workpiece enters the next process along the guide track. The above laser welding and cutting device forms an assembly line for the transmission, clamping and welding and cutting processes of the workpiece, thereby reducing the time of manual transfer of workpieces between different processes, saving manpower and being conducive to improving the processing efficiency of the workpiece.

[0009] Preferably, a buffer assembly is provided on the clamping plate, and the buffer assembly includes a fixed sleeve fixedly connected to the clamping plate, a movable column inserted into the fixed sleeve and slidably matched with the fixed sleeve, and a spring fixedly connected to the movable column, the end of the spring away from the movable column is fixedly connected to the inner end surface of the fixed sleeve, and the end of the movable column away from the clamping plate abuts against the workpiece to be processed.

[0010] By adopting the above technical solution, the movable column is pressed against the workpiece to be processed under the elastic force of the spring. The arrangement of the fixed sleeve, the movable column and the spring is conducive to improving the adaptability of the device to slight changes in the size of the workpiece to be processed, thereby preventing the workpiece to be processed from falling between the limit plate and the pressing plate.

[0011] Preferably, a screw rod is passed through the working plate, a connecting plate is sleeved on the screw rod, the connecting plate is threadedly engaged with the screw rod, and the end of the connecting plate away from the screw rod is fixedly connected to the limit plate, a sliding groove for slidingly engaging with the connecting plate is opened on the working plate, and the control component is used to drive the screw rod to rotate.

[0012] By adopting the above technical solution, the operator uses the control component to rotate the screw rod, and the rotation of the screw rod causes the connecting plate to move along the length direction of the screw rod. The movement of the connecting plate in turn drives the movement of the limit plate. The movement of the limit plate enables the operator to adjust the position of the workpiece on the horizontal plane.

[0013] Preferably, a positioning plate is fixedly connected to the side of the working plate close to the workbench, a cylinder is installed on the positioning plate, and the end of the cylinder piston rod is fixedly connected to the clamping plate; the control component includes a driving rod passing through the working plate, a driving sleeve fixedly connected to the clamping plate for driving the driving rod to rotate, a driving gear is fixedly sleeved on the driving rod, and a driven gear is fixedly sleeved on the screw rod, the driving gear and the driven gear are meshed with each other, and the number of driving teeth is several times the number of teeth of the driven gear.

[0014] By adopting the above technical solution, when the workpiece to be processed enters the workbench, the operator starts the cylinder, and the piston rod of the cylinder pushes the clamping plate to move, and the movement of the clamping plate drives the driving sleeve to move, and the movement of the driving sleeve causes the driving rod to rotate, and the rotation of the driving rod causes the driving gear to rotate, and the rotation of the driving gear causes the driven gear to rotate, and finally the movement of the limit plate is realized. The difference in the number of teeth between the driving gear and the driven gear makes the moving speeds of the limit plate and the clamping plate inconsistent, so that the operator can control the distance between the limit plate and the clamping plate, thereby realizing the clamping and release of the workpiece.

[0015] Preferably, the driving rod includes a threaded section close to the limiting plate and a smooth section fixedly connected to the threaded section, and the driving sleeve is slidingly engaged with the smooth section; the threaded section is fixedly connected with a plurality of spiral blocks along its circumference, and a plurality of spiral grooves for threadably engaging with the spiral blocks are provided on the inner side wall of the driving sleeve.

[0016] By adopting the above technical solution, the cylinder pushes the clamping plate to move, and the movement of the clamping plate drives the driving sleeve to move. When the driving sleeve moves on the smooth section, the cylinder pushes the clamping plate to clamp the workpiece to be processed. When the driving sleeve moves on the threaded section, the moving speed of the limit plate is faster than the moving speed of the clamping plate, thereby releasing the workpiece and allowing the workpiece to enter the next process.

[0017] Preferably, a receiving groove for slidingly cooperating with the working plate is provided in the base, and the lifting assembly includes a multi-stage airbag fixedly installed on the bottom surface of the receiving groove and an inflator installed on the support plate for inflating the multi-stage airbag, and a plurality of gravity rings are evenly and fixedly connected to the inner side wall of the multi-stage airbag along its height direction.

[0018] By adopting the above technical solution, the operator starts the inflator, and the inflator inflates the multi-stage airbags, so that the working plate rises in the vertical direction. The provision of multiple gravity rings is conducive to ensuring that the inflation order of the multi-stage airbags is from bottom to top, thereby making the working plate rise at a uniform speed. When the operator turns off the inflator, the gas in the multi-stage airbags is discharged to cause the working plate to descend.

[0019] Preferably, a fixing plate for slidingly cooperating with the inner side wall of the sliding groove is fixedly connected to the clamping plate, the fixing plate is fixedly sleeved on the driving sleeve, and a first electrode for electrically connecting to the inflator is provided at one end of the fixing plate away from the clamping plate, a second electrode for electrically connecting to an external power supply for powering the inflator is provided on the moving path of the first electrode, and the first electrode is in electrical contact with the second electrode.

[0020] By adopting the above technical solution, the operator uses the cylinder to push the clamping plate to move, and the movement of the clamping plate drives the movement of the fixed plate. When the clamping plate and the limit plate clamp the workpiece to be processed, the fixed plate drives the first electrode to make electrical contact with the second electrode, thereby connecting the circuit between the external power supply and the inflator. The external power supply powers the inflator, and the inflator realizes the rising of the processing mechanism through multi-stage airbags.

[0021] Preferably, a collecting groove is provided on the working plate, and a collecting pipe is provided on the side of the supporting plate away from the working table, one end of the collecting pipe is connected to the inner bottom surface of the collecting groove, and the other end of the collecting pipe is connected to the collecting box, and a spray gun for spraying protective gas is fixedly connected to the laser welding assembly.

[0022] By adopting the above technical solution, the shielding gas sprayed by the air gun is beneficial to improving the welding quality, and also allows the impurities at the welding position to enter the collection box through the collection pipe, making it convenient for operators to handle the impurities.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] The setting of the transmission mechanism facilitates the transportation of the workpiece to be processed, and the setting of the control component facilitates the operator to adjust the distance between the limit plate and the clamping plate. The laser welding device forms a production line for the transmission, clamping and welding of the workpiece, thereby reducing the time for manual transfer of the workpiece between different processes, saving manpower and improving the processing efficiency of the workpiece;

[0025] The piston rod of the cylinder pushes the clamping plate to move, and the movement of the clamping plate drives the driving sleeve to move, and the movement of the driving sleeve causes the driving rod to rotate, and the rotation of the driving rod causes the driving gear to rotate, and the rotation of the driving gear causes the driven gear to rotate, and finally the movement of the limit plate is realized. The difference in the number of teeth between the driving gear and the driven gear makes the moving speeds of the limit plate and the clamping plate inconsistent, so that the operator can control the distance between the limit plate and the clamping plate, thereby realizing the clamping and release of the workpiece;

[0026] The shielding gas sprayed by the air gun is beneficial to improving the welding quality, and also allows the impurities at the welding position to enter the collection box through the collection pipe, making it convenient for operators to handle the impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of a laser welding device according to an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the internal structure of the laser welding device of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the working board of the embodiment of the present application.

[0030] Figure 4 yes Figure 3 A magnified schematic diagram of center A.

[0031] Figure 5 It is a schematic diagram of the internal structure of the fixing plate of an embodiment of the present application.

[0032] Figure 6 yes Figure 5 A magnified schematic diagram of point B in the middle.

[0033] Explanation of the reference numerals: 1. base; 11. workbench; 12. receiving groove; 13. positioning plate; 131. cylinder; 14. support plate; 15. collecting box; 151. discharge pipe; 152. solenoid valve; 153. collecting pipe; 16. guide rail; 2. transmission mechanism; 21. conveying frame; 22. rotating roller; 23. conveyor belt; 24. driving motor; 3. processing mechanism; 31. working plate; 311. mounting cavity; 312. sliding groove; 313. screw rod; 314. driven gear; 316. second electrode groove; 317. second electrode; 318. concave groove; 319. collecting groove; 32. limiting plate; 321. connecting plate; 33. pressing plate; 331. fixing plate; 332. first electrode Groove; 333, first electrode; 334, compression spring; 335, elastic ball; 4, lifting assembly; 41, multi-stage airbag; 411, gravity ring; 42, inflator; 5, buffer assembly; 51, fixed sleeve; 52, moving column; 53, spring; 54, protective pad; 6, control assembly; 61, drive rod; 611, smooth section; 612, threaded section; 613, driving gear; 614, spiral block; 62, drive sleeve; 621, spiral groove; 7, laser welding assembly; 71, guide plate; 711, guide groove; 712, lead screw; 713, servo motor; 72, electric slide rail; 721, vertical plate; 73, laser welding gun; 74, jet gun; 741, gas pipe; 8, workpiece to be processed. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] The present application embodiment discloses a laser welding device. Figure 1 , Figure 2 The laser welding device includes a base 1, a transmission mechanism 2 and a processing mechanism 3.

[0036] Reference Figure 1 , Figure 2 The cross section of the base 1 is rectangular, the bottom surface of the base 1 is in contact with the ground, the upper surface of the base 1 is fixedly connected with a workbench 11 for slidingly cooperating with the workpiece 8 to be processed, and a guide track 16 for guiding the workpiece into the next process is arranged on one side of the workbench 11, and the bottom surface of the guide track 16 is fixedly connected with the upper surface of the base 1. The conveying mechanism 2 includes a conveying frame 21, a rotating roller 22, a conveying belt 23 and a driving motor 24. The conveying frame 21 is arranged horizontally, one end of the conveying frame 21 is used to place the workpiece 8 to be processed in sequence, and the other end of the conveying frame 21 is connected with the workbench 11.

[0037] Reference Figure 1 , Figure 2The rotating roller 22 is arranged horizontally, the length direction of the rotating roller 22 is perpendicular to the length direction of the conveying frame 21, and the rotating roller 22 is rotatably connected to the conveying frame 21. Two rotating rollers 22 are arranged, one rotating roller 22 is arranged at one end of the conveying frame 21, and the other rotating roller 22 is arranged at the other end of the conveying frame 21, and the conveyor belt 23 is wound around the two rotating rollers 22. The driving motor 24 is fixedly installed on the conveying frame 21, the length direction of the output shaft of the driving motor 24 is parallel to the length direction of the rotating roller 22, and the output shaft of the driving motor 24 is fixedly connected to the rotating roller 22 away from the workbench 11. When the operator starts the driving motor 24, the driving motor 24 rotates to rotate the rotating roller 22, the rotating roller 22 rotates to rotate the conveyor belt 23, and the conveyor belt 23 rotates to make the workpieces 8 to be processed enter the workbench 11 in sequence.

[0038] Reference Figure 2 , Figure 3 The processing mechanism 3 includes a working plate 31, a limiting plate 32 and a tightening plate 33. The working plate 31 is arranged vertically. The side of the working plate 31 close to the workbench 11 is slidably matched with the workbench 11, and the working plate 31 is inserted into the base 1, and the workbench 11 is slidably matched with the base 1. A receiving groove 12 for accommodating the working plate 31 is provided on the base 1, and the cross section of the receiving groove 12 is rectangular. A lifting component 4 is arranged in the base 1, and the lifting component 4 includes a multi-stage airbag 41 and an inflator 42. The multi-stage airbag 41 is arranged in the receiving groove 12, and the bottom surface of the multi-stage airbag 41 is fixedly connected to the inner bottom surface of the receiving groove 12, and the upper surface of the multi-stage airbag 41 is fixedly connected to the bottom surface of the working plate 31. A plurality of gravity rings 411 are fixedly connected to the inner side wall of the multi-stage airbag 41, and the plurality of gravity rings 411 are evenly arranged along the height direction of the multi-stage airbag 41.

[0039] Reference Figure 2 , Figure 3 A support plate 14 is fixed on the side of the base 1 away from the conveyor frame 21, and the support plate 14 is vertically arranged. An inflator 42 is fixedly installed on the side of the support plate 14 away from the base 1, and the inflator 42 is connected to the multi-stage airbag 41. When the operator starts the inflator 42, the inflator 42 inflates the multi-stage airbag 41, and the multi-stage airbag 41 inflates and expands to lift the working plate 31. The setting of the gravity ring 411 makes the multi-stage airbag 41 expand from low to high in sequence, and when the operator stops the inflator 42 to inflate the multi-stage airbag 41, the gas in the multi-stage airbag 41 gradually flows out, so that the working plate 31 drops.

[0040] Reference Figure 3 , Figure 4, the working plate 31 is fixedly connected with a positioning plate 13 on the side close to the workbench 11, and the positioning plate 13 is in the shape of a rectangular plate. A cylinder 131 is fixedly installed on the side of the positioning plate 13 away from the workbench 11, and the piston rod of the cylinder 131 passes through the positioning plate 13 and slides with the positioning plate 13. The abutting plate 33 is fixedly connected with the end of the piston rod of the cylinder 131 away from the positioning plate 13, and the abutting plate 33 slides with the workbench 11. A buffer assembly 5 is arranged on the side of the abutting plate 33 away from the positioning plate 13, and the buffer assembly 5 includes a fixed sleeve 51, a movable column 52 and a spring 53. The fixed sleeve 51 is in the shape of a circular cylinder, one end of the fixed sleeve 51 is open, and the other end of the fixed sleeve 51 is closed, and the closed end of the fixed sleeve 51 is fixedly connected to the abutting plate 33. A plurality of fixed sleeves 51 are arranged, and the plurality of fixed sleeves 51 are arranged at intervals along the length direction of the conveying frame 21.

[0041] Reference Figure 3 , Figure 4 The movable column 52 is inserted into the open end of the fixed sleeve 51, and the movable column 52 and the fixed sleeve 51 are slidably matched, and the spring 53 is arranged in the fixed sleeve 51, one end of the spring 53 is fixedly connected to the inner end surface of the fixed sleeve 51, and the other end of the spring 53 is fixedly connected to the movable column 52. The limit plate 32 is slidably arranged on the working plate 31, and the length direction of the limit plate 32 is consistent with the length direction of the clamping plate 33. The side surfaces of the limit plate 32 and the movable column 52 that are close to each other are fixedly connected with a protective pad 54, and the setting of the protective pad 54 is conducive to preventing the side damage of the workpiece 8 to be processed.

[0042] Reference Figure 3 , Figure 4 The end of the limit plate 32 near the working plate 31 is fixedly connected with a connecting plate 321. A mounting cavity 311 is provided in the working plate 31. The cross section of the mounting cavity 311 is rectangular. A sliding groove 312 is provided on the side of the mounting cavity 311 near the limit plate 32. The inner side wall of the sliding groove 312 is slidably matched with the connecting plate 321. A screw rod 313 is provided in the mounting cavity 311. The length direction of the screw rod 313 is perpendicular to the length direction of the limit plate 32. The screw rod 313 is passed through the connecting plate 321. The screw rod 313 is threadedly matched with the connecting plate 321, and the two ends of the screw rod 313 are respectively rotatably connected with the inner end surface of the mounting cavity 311.

[0043] Reference Figure 3 , Figure 4The working plate 31 is provided with a control assembly 6, which includes a driving rod 61 and a driving sleeve 62. The driving rod 61 is inserted into the installation cavity 311. The length direction of the driving rod 61 is parallel to the length direction of the screw rod 313. The two ends of the driving rod 61 are respectively rotatably connected to the inner end surface of the installation cavity 311. The driving rod 61 includes a smooth section 611 and a threaded section 612. The end of the driving rod 61 close to the abutting plate 33 is the smooth section 611, and the axes of the smooth section 611 and the threaded section 612 coincide. The end of the threaded section 612 of the driving rod 61 away from the smooth section 611 is sleeved with a driving gear 613, and the driving gear 613 is fixedly connected to the driving rod 61. The screw rod 313 is sleeved with a driven gear 314, and the driven gear 314 is fixedly connected to the screw rod 313, and the driving gear 613 and the driven gear 314 are meshed with each other.

[0044] Reference Figure 5 , Figure 6 The drive sleeve 62 is sleeved on the drive rod 61. The drive sleeve 62 is a circular cylinder. The drive sleeve 62 is slidably matched with the smooth section 611. The threaded section 612 of the drive rod 61 is fixedly connected with a spiral block 614 along its circumference. There are multiple spiral blocks 614, and the multiple spiral blocks 614 are arranged at intervals. A plurality of spiral grooves 621 are opened on the inner side wall of the drive sleeve 62. The spiral grooves 621 correspond to the spiral blocks 614 one by one, and the spiral grooves 621 are threadedly matched with the spiral blocks 614.

[0045] Reference Figure 5 , Figure 6 , a fixing plate 331 is sleeved on the driving sleeve 62, the length direction of the fixing plate 331 is consistent with the length direction of the connecting plate 321, the end of the fixing plate 331 away from the fixing plate 331 is fixedly connected to the clamping plate 33, the fixing plate 331 extends out of the sliding groove 312, and the fixing plate 331 and the inner side wall of the sliding groove 312 are slidably matched. The screw rod 313 is inserted into the fixing plate 331, and the screw rod 313 is rotatably connected to the fixing plate 331. A first electrode 333 is provided at the end of the fixing plate 331 away from the clamping plate 33, and a first electrode groove 332 for slidingly matching with the first electrode 333 is opened on the fixing plate 331, and the cross section of the first electrode groove 332 is rectangular. A compression spring 334 is provided in the first electrode groove 332, one end of the compression spring 334 is fixedly connected to the inner end surface of the first electrode groove 332, and the other end of the compression spring 334 is fixedly connected to the first electrode 333.

[0046] Reference Figure 5 , Figure 6The inner wall of the installation cavity 311 is provided with a second electrode 317, and a second electrode groove 316 for accommodating the second electrode 317 is provided on the inner wall of the installation cavity 311. An elastic ball 335 is rotatably installed on the side of the first electrode 333 close to the second electrode 317, and a concave groove 318 for matching with the elastic ball 335 is provided on the side of the second electrode 317 close to the first electrode 333. The first electrode 333 is electrically connected to the inflator 42, and the second electrode 317 is electrically connected to the external power supply. When the elastic ball 335 enters the concave groove 318, the first electrode 333 is electrically contacted with the second electrode 317, so that the circuit is connected, and the inflator 42 inflates the multi-stage airbag 41.

[0047] Reference Figure 1 , Figure 2 , a laser welding assembly 7 is arranged on the support plate 14, and the laser welding assembly 7 includes a guide plate 71, an electric slide rail 72 and a laser welding gun 73. The bottom surface of the guide plate 71 is fixedly connected to the upper surface of the support plate 14, and the length direction of the guide plate 71 is consistent with the length direction of the working plate 31. A guide groove 711 is provided on the side of the workbench 11 close to the guide plate 71, and the length direction of the guide groove 711 is consistent with the length direction of the guide plate 71. The electric slide rail 72 is penetrated in the guide plate 71, and the electric slide rail 72 is slidably matched with the inner side wall of the guide groove 711. A slider is slidably installed in the electric slide rail 72, and the laser welding gun 73 is fixedly installed on the slider. A lead screw 712 is penetrated in the end of the electric slide rail 72 close to the guide plate 71, and the lead screw 712 is threadedly matched with the electric slide rail 72, and the length direction of the lead screw 712 is consistent with the length direction of the guide plate 71, and the two ends of the lead screw 712 are respectively rotatably connected with the inner end surface of the guide groove 711. A servo motor 713 is fixedly connected to the guide plate 71, and the output shaft of the servo motor 713 penetrates into the guide plate 71 and is fixedly connected to the lead screw 712, and the output shaft of the servo motor 713 coincides with the axis of the lead screw 712. The arrangement of the electric slide rail 72, the lead screw 712 and the servo motor 713 facilitates the operator to control the position of the laser welding gun 73, so that the operator can perform the welding process on the workpiece 8 to be processed.

[0048] Reference Figure 1 , Figure 2A collecting tank 319 is provided on the end surface of the working plate 31 close to the working table 11, and a collecting box 15 is fixedly installed on the end surface of the supporting plate 14 away from the working table 11. The collecting box 15 is a hollow box body, and a discharge pipe 151 is connected to the bottom surface of the collecting box 15, and a solenoid valve 152 is installed on the discharge pipe 151. A collecting pipe 153 is provided between the collecting box 15 and the inner side wall of the collecting tank 319, one end of the collecting pipe 153 is connected to the inner side wall of the collecting tank 319, and the other end of the collecting pipe 153 is connected to the collecting box 15. A vertical plate 721 is fixedly connected to the end of the electric slide rail 72 away from the supporting plate 14, and a jet gun 74 is penetrated on the vertical plate 721, and a gas supply pipe 741 is connected to the jet gun 74, and the other end of the gas supply pipe 741 is connected to an external gas source for providing protective gas. The shielding gas sprayed by the air gun 74 is beneficial to improving the welding quality, and also allows the impurities at the welding position to enter the collection box 15 through the collection pipe 153, making it convenient for operators to handle the impurities.

[0049] The implementation principle of a laser welding device in the embodiment of the present application is as follows: the operator starts the driving motor 24, and the driving motor 24 rotates the conveyor belt 23 by rotating the roller 22, and the workpiece 8 to be processed enters the workbench 11 along with the conveyor belt 23. After the workpiece 8 to be processed enters the workbench 11, the operator starts the cylinder 131, and the piston rod of the cylinder 131 pushes the clamping plate 33 to move. The movement of the clamping plate 33, on the one hand, enables the movable column 52 and the limit plate 32 to cooperate to clamp the workpiece 8 to be processed; the movement of the clamping plate 33, on the other hand, drives the fixed plate 331 to move, and the movement of the fixed plate 331 drives the first electrode 333 to move. When the clamping plate 33 cooperates with the limit plate 32 to fix the workpiece 8 to be processed, the first electrode 333 is electrically connected to the second electrode 317, so that the inflator 42 is connected to the circuit of the external power supply, and the inflator 42 inflates the multi-stage airbag 41, thereby realizing the rise of the workplate 31. Next, the operator uses the laser welding assembly 7 to perform welding and cutting operations on the workpiece, and then the operator sprays out protective gas through the jet gun 74. On the one hand, the protective gas is beneficial to improving the welding and cutting quality of the workpiece. On the other hand, the protective gas blows impurities on the workpiece into the collection box 15, thereby facilitating the operator to deal with the impurities.

[0050] When the welding process is completed, the operator continues to drive the cylinder 131 to push the clamping plate 33 to move, and the movement of the clamping plate 33 drives the movement of the fixed plate 331, and the movement of the fixed plate 331 drives the driving sleeve 62 to enter the threaded section 612 of the driving rod 61. The setting of the spiral groove 621 and the spiral block 614 makes the driving rod 61 rotate, and the rotation of the driving rod 61 drives the driving gear 613 to rotate, and the driving gear 613 rotates to rotate the driven gear 314, and the driven gear 314 rotates to rotate the screw rod 313, and the screw rod 313 rotates to move the connecting plate 321 along the length of the screw rod 313. The operator adjusts the distance between the limit plate 32 and the clamping plate 33 through the control component 6 to loosen the workpiece, and the workpiece enters the next process along the guide track 16. The above-mentioned laser welding and cutting device forms a production line for the transmission, clamping and welding and cutting processes of the workpiece, thereby reducing the time of manually transferring the workpiece between different processes, saving manpower and being conducive to improving the processing efficiency of the workpiece.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser welding device, comprising a base (1), a support plate (14) fixedly connected to the base (1), and a laser welding assembly (7) mounted on the support plate (14) for performing a welding process on a workpiece (8) to be processed, wherein the laser welding assembly (7) comprises a laser welding gun (73), characterized in that: A workbench (11) is arranged on the base (1), a conveying mechanism (2) for transporting the workpiece (8) to be processed and docking with the workbench (11) is arranged on one side of the base (1), and a guide track (16) for guiding the processed workpiece to enter the next process is arranged on the base (1); a processing mechanism (3) for clamping the workpiece (8) to be processed is arranged on the workbench (11), and the processing mechanism (3) comprises a working plate (31) penetrating the base (1), a limit plate (32) and a clamping plate (33) slidably arranged on both sides of the working plate (31) for clamping the workpiece (8) to be processed, and a control component (6) for adjusting the distance between the limit plate (32) and the clamping plate (33) is arranged in the working plate (31); a lifting component (4) for moving the processing mechanism (3) in a vertical direction is arranged in the base (1); A buffer assembly (5) is provided on the abutting plate (33), and the buffer assembly (5) comprises a fixed sleeve (51) fixedly connected to the abutting plate (33), a movable column (52) inserted into the fixed sleeve (51) and slidably matched with the fixed sleeve (51), and a spring (53) fixedly connected to the movable column (52), wherein the end of the spring (53) away from the movable column (52) is fixedly connected to the inner end surface of the fixed sleeve (51), and the end of the movable column (52) away from the abutting plate (33) abuts against the workpiece (8) to be processed; A screw rod (313) is inserted into the working plate (31), a connecting plate (321) is sleeved on the screw rod (313), the connecting plate (321) is threadedly matched with the screw rod (313), and the end of the connecting plate (321) away from the screw rod (313) is fixedly connected to the limit plate (32), the working plate (31) is provided with a sliding groove (312) for slidingly matching with the connecting plate (321), and the control component (6) is used to drive the screw rod (313) to rotate; A positioning plate (13) is fixedly connected to the side of the working plate (31) close to the working table (11), and a cylinder (131) is installed on the positioning plate (13), and the end of the piston rod of the cylinder (131) is fixedly connected to the abutting plate (33); the control component (6) comprises a driving rod (61) penetrating the working plate (31), and a driving sleeve (62) fixedly connected to the abutting plate (33) for driving the driving rod (61) to rotate, a driving gear (613) is fixedly sleeved on the driving rod (61), and a driven gear (314) is fixedly sleeved on the screw rod (313), and the driving gear (613) and the driven gear (314) are meshed with each other, and the number of teeth of the driving gear is several times the number of teeth of the driven gear (314); The driving rod (61) comprises a threaded section (612) close to the limiting plate (32) and a smooth section (611) fixedly connected to the threaded section (612), and the driving sleeve (62) is slidably matched with the smooth section (611); the threaded section (612) is fixedly connected with a plurality of spiral blocks (614) along its circumference, and a plurality of spiral grooves (621) for threadably matching with the spiral blocks (614) are formed on the inner side wall of the driving sleeve (62); The base (1) is provided with a receiving groove (12) for slidingly cooperating with the working plate (31); the lifting assembly (4) comprises a multi-stage airbag (41) fixedly mounted on the inner bottom surface of the receiving groove (12) and an inflator (42) mounted on the support plate (14) for inflating the multi-stage airbag (41); and a plurality of gravity rings (411) are evenly fixedly connected to the inner side wall of the multi-stage airbag (41) along its height direction; A fixing plate (331) is fixedly connected to the abutting plate (33) and is used for slidingly cooperating with the inner side wall of the sliding groove (312); the fixing plate (331) is fixedly sleeved on the driving sleeve (62); and a first electrode (333) for electrically connecting to the inflator (42) is provided at one end of the fixing plate (331) away from the abutting plate (33); a second electrode (317) for electrically connecting to an external power supply for supplying power to the inflator (42) is provided on the moving path of the first electrode (333); and the first electrode (333) is in electrical contact with the second electrode (317); A collecting groove (319) is provided on the working plate (31), and a collecting pipe (153) is provided on the side of the supporting plate (14) away from the working table (11), one end of the collecting pipe (153) is connected to the inner bottom surface of the collecting groove (319), and the other end of the collecting pipe (153) is connected to the collecting box (15), and a spray gun (74) for spraying protective gas is fixedly connected to the laser welding assembly (7).

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