Thin plate welding part laser welding auxiliary device and welding method thereof

Abstract

The invention belongs to the technical field of thin plate welding part laser welding, and particularly relates to a thin plate welding part laser welding auxiliary device and a welding method.The thin plate welding part laser welding auxiliary device comprises a welding auxiliary positioning plate, and clamping frames are slidably mounted at the two ends of the upper surface of the welding auxiliary positioning plate; clamping assemblies are arranged in the two clamping frames correspondingly, two mounting plates are symmetrically fixed to the front side wall and the rear side wall of the welding auxiliary positioning plate correspondingly, a lifting assembly is fixedly mounted on the upper surfaces of the four mounting plates jointly, the upper end of the lifting assembly is sleeved with a lifting plate, a movable adjusting assembly is arranged on the upper surface of the lifting plate, and a middle groove plate is slidably clamped in the lifting plate. A movable mounting block is slidably clamped in the middle groove plate, and a laser welding mechanism is fixed to the lower end of the movable mounting block. According to the thin plate welding device, to-be-welded thin plates with different thicknesses and different lengths can be rapidly and stably clamped, and rapid and accurate welding of the thin plates can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser welding of thin plate welded parts, and in particular relates to a laser welding auxiliary device for thin plate welded parts and a welding method thereof. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source to locally heat two or more metal or non-metal materials to a molten or partially molten state, and then rapidly cools and solidifies them to achieve connection.

[0003] During the laser welding process, an auxiliary fixing device is required to fix the workpiece to be welded. For example, the Chinese utility model patent with authorization announcement number CN221833589U and authorization announcement date 2024.10.15 discloses an auxiliary fixing device for laser welding, including an adjustment plate, both sides of the adjustment plate are fixedly connected with L-shaped plates, the surface of the L-shaped plate is threaded with a fixing component, a sliding groove is provided inside the adjustment plate, and a sliding rod is slidably connected inside the sliding groove. The fixing component includes a threaded rod, one end of the threaded rod is rotatably connected to the fixing plate through a bearing, and circular grooves are equidistantly provided on the surface of the fixing plate. The other end of the threaded rod is fixedly connected with a protrusion for rotation, and a spring is fixedly connected inside the circular groove, one end of the spring is fixedly connected with a fixing block for further fixing, and a shock-absorbing piston rod for buffering is sleeved inside the spring. The top surface of the adjustment plate is provided with an anti-slip film for increasing the anti-slip property, and a fixing bolt is threadedly connected to the other side of the L-shaped plate. The auxiliary fixing device for laser welding can stably clamp and fix the thin plate to be welded. However, when fixing the thin plate, the device needs to screw the threaded rods one by one to achieve the fixing effect of the thin plate. The fixing operation efficiency is low and needs to be improved. In addition, the device is not convenient for accurate welding of the welding part during laser welding, and the thin plate joints may shake during welding, which is not conducive to the stability of welding. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a laser welding auxiliary device for thin plate welded parts and a welding method thereof in view of the shortcomings of the prior art. The present invention can realize fast and stable clamping of thin plates to be welded with different thicknesses and lengths, and can realize fast and accurate welding of thin plates.

[0005] This scheme is achieved through the following technical measures: a laser welding auxiliary device for thin plate welding parts, including a welding auxiliary positioning plate, both ends of the upper surface of the welding auxiliary positioning plate are slidably installed with clamping frames, and clamping components are arranged in the two clamping frames, and the clamping component includes a synchronization rope, a pull groove is opened in the middle position of one side wall of the welding auxiliary positioning plate, and the opposite ends of the two synchronization ropes are arranged in the pull groove, and the front and rear side walls of the welding auxiliary positioning plate are symmetrically fixed with two mounting plates, and the upper surfaces of the four mounting plates are commonly fixedly installed with a lifting component, the upper end of the lifting component is sleeved with a lifting plate, and the upper surface of the lifting plate is provided with a movable adjustment component, a middle slot plate is slidably clamped in the lifting plate, and a movable mounting block is slidably clamped in the middle slot plate, and a laser welding mechanism is fixedly installed on the lower end of the movable mounting block, and weld pressing shading components are fixedly installed on both sides of the lower surface of the movable mounting block.

[0006] Preferably, the mobile adjustment component includes a synchronous first motor and a synchronous second motor, the synchronous second motor and the synchronous first motor are symmetrically fixedly installed at the bottom of the left front and rear ends of the lifting plate, the output end of the synchronous first motor is fixedly installed with a first synchronous wheel, the output end of the synchronous second motor is fixedly installed with a second synchronous wheel, the outer surfaces of the first synchronous wheel and the second synchronous wheel are respectively wound with a first synchronous belt and a second synchronous belt, the top of the right front and rear ends of the lifting plate are respectively rotatably installed with a second idler wheel and a first idler wheel, the front and rear ends of the middle part of the lifting plate are symmetrically rotatably installed with a stabilizing wheel and a stabilizing rod, one end of the first synchronous belt bypasses the stabilizing rod at the rear end and is fixedly connected to the rear end of the mobile mounting block, the other end of the first synchronous belt bypasses the stabilizing wheel at the rear end, the first idler wheel, the second idler wheel and the stabilizing wheel at the front end in sequence and is fixedly connected to the front end of the mobile mounting block, one end of the second synchronous belt bypasses the stabilizing rod at the front end and is fixedly connected to the front end of the mobile mounting block, the other end of the second synchronous belt bypasses the stabilizing wheel at the front end, the second idler wheel, the first idler wheel and the stabilizing wheel at the rear end in sequence and is fixedly connected to the rear end of the mobile mounting block.

[0007] Preferably, the first synchronous belt and the second synchronous belt are arranged alternately up and down.

[0008] Preferably, sliding T-shaped grooves are symmetrically provided on the left and right ends of the front and rear sides of the welding auxiliary positioning plate, and sliding T-shaped blocks are symmetrically fixedly connected to the front and rear ends of the clamping frame. The sliding T-shaped blocks are slidably engaged with the sliding T-shaped grooves, and spring grooves are provided on opposite sides of the two sliding T-shaped blocks, and adjusting springs are fixedly installed in the spring grooves, and adjusting conical rods are fixedly installed on opposite ends of the two adjusting springs, and a positioning groove is linearly provided on the inner wall of one side of the sliding T-shaped groove, and the end of the adjusting conical rod is slidably engaged with the positioning groove.

[0009] Preferably, the clamping assembly also includes a clamping plate, which is slidably mounted in the clamping frame, and guide grooves are provided at both ends of the clamping plate, and guide blocks slidingly matched with the guide grooves are fixedly mounted on the inner walls at both ends of the clamping frame. A linkage rod is fixedly mounted on the upper surface of the clamping plate, and the upper end of the linkage rod passes through the top outer wall of the clamping frame, and a linkage spring is sleeved on the outer side of the linkage rod, the lower end of the linkage spring is fixedly connected to the upper surface of the clamping plate, and the upper end is fixedly connected to the top inner wall of the clamping frame, the opposite ends of the two synchronization ropes are fixedly connected to the corresponding upper ends of the linkage rods, and a gantry is provided on the upper surface of the clamping frame, a rope hole is provided in the middle of the gantry, the synchronization rope passes through the rope hole and extends from one end of the welding auxiliary positioning plate into the pull groove, and the opposite ends of the two synchronization ropes are fixedly connected.

[0010] Preferably, the lifting assembly includes a lifting motor, which is fixedly mounted on the lower surface of one of the mounting plates, and the two mounting plates located on the rear side of the welding auxiliary positioning plate are rotatably mounted with lifting screws, the output end of the lifting motor is fixedly connected to the lower end of the corresponding lifting screw, and guide rods are fixedly mounted above the two mounting plates located on the front side of the welding auxiliary positioning plate, and threaded holes threadedly connected to the lifting screws and guide holes with clearance matching with the guide rods are formed on the lifting plates, and lifting sprockets are fixedly mounted on the lower ends of the outer surfaces of the two lifting screws, and the two lifting sprockets are connected through a lifting chain transmission.

[0011] Preferably, both ends of the middle slot plate are fixedly mounted with limiting T-shaped blocks, and the inner walls on both the front and rear sides of the lifting plate are provided with limiting T-shaped grooves, and the limiting T-shaped blocks are slidably engaged with the limiting T-shaped grooves.

[0012] Preferably, the weld pressing shading assembly includes a pressing cylinder, a ball box is fixedly installed at the lower end of the pressing cylinder, sliding balls are evenly rolled and clamped in the ball box, and shading plates are fixedly connected to the opposite sides of the two ball boxes.

[0013] Preferably, mounting holes are provided at the four corners of the welding auxiliary positioning plate, and mounting screws are inserted into the mounting holes.

[0014] The present invention also provides a thin plate welded part laser welding method based on the above-mentioned thin plate welded part laser welding auxiliary device, comprising the following steps: S1: Select a suitable location for installation: install the welding auxiliary positioning plate to a suitable location through the installation screws; S2: Adjust the position of the clamping frame: pull the clamping frame so that the adjusting tapered rods are engaged with the positioning grooves in the sliding T-slot one by one, thereby adapting to the length of the thin plate to be welded; S3: Clamping the thin plate to be welded: Pull one end of the synchronization rope in the pull groove, so that the synchronization rope overcomes the elastic force of the linkage spring and pulls the linkage rod upward, and the linkage rod drives the clamping plate to move upward synchronously, so that the staff can place the thin plate to be welded. After the welded thin plate is placed in place, release the synchronization rope, the linkage spring resets and pushes the clamping plate to clamp the thin plate to be welded for welding; S4: Control the depth of laser welding on the thin plate according to the thickness of the thin plate: By controlling the rotation direction of the lifting motor, the lifting plate can drive the laser welding mechanism to move up and down, thereby controlling the welding depth of the thin plate, which is convenient for welding thin plates of different thicknesses; S5: Adjusting the welding position: By driving the synchronous first motor and the synchronous second motor, the first synchronous belt and the second synchronous belt can drive the movable mounting block to move horizontally in the XY direction, so that the welding position can be adjusted; S6: Shielding and stably squeezing and clamping the welding point of the thin plate: By squeezing the cylinder and the shading plate, the welding point of the thin plate can be squeezed and clamped to prevent the welding position from shaking and improve the welding quality.

[0015] Beneficial effects of the present invention: 1. The present invention can stably clamp thin plates of different thicknesses and lengths to be welded, and the clamping structure is convenient for the staff to operate; 2. The present invention is provided with a lifting assembly and a moving adjustment assembly, which can quickly and accurately weld welding areas at different positions of the thin plate, improve the welding quality, and have a high degree of automation; 3. The weld pressing shading component of the present invention can stably squeeze both sides of the welding part, thereby reducing the possibility of shaking of the welding position during welding, and at the same time can shade the welding position, thereby improving the protection of the workers.

[0016] It can be seen that compared with the prior art, the present invention has outstanding substantive features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the laser welding auxiliary device for thin plate welding parts in the present invention; Figure 2 It is a schematic diagram of the connection structure between the clamping frame and the welding auxiliary positioning plate in the present invention; Figure 3 It is a structural schematic diagram of the lifting assembly in the present invention; Figure 4 It is a structural schematic diagram of the mobile adjustment component in the present invention; Figure 5It is a structural schematic diagram of the clamping frame in the present invention; Figure 6 The structure diagram of the weld pressing shading component in the present invention is shown in FIG. Figure 1 ; Figure 7 The structure diagram of the weld pressing shading component in the present invention is shown in FIG. Figure 2 ; Figure 8 It is a schematic diagram of the structure of the middle slot plate in the present invention; Fig. 9 for Figure 3 Enlarged view of point A in the middle.

[0018] In the figure: 1. welding auxiliary positioning plate; 2. clamping frame; 3. clamping assembly; 301. synchronization rope; 302. clamping plate; 303. guide block; 304. linkage rod; 305. linkage spring; 4. drawing groove; 5. mounting plate; 6. lifting assembly; 601. lifting motor; 602. lifting screw; 603. guide rod; 604. lifting sprocket; 605. lifting chain; 7. lifting plate; 8. middle groove plate; 9. mobile mounting block; 10. laser welding mechanism; 11. welding seam pressing shading assembly; 1101. pressing cylinder; 1102. ball box; 1 103, sliding ball; 1104, sunshade; 12, gantry; 13, mobile adjustment assembly; 1301, synchronous first motor; 1302, synchronous second motor; 1303, first synchronous wheel; 1304, second synchronous wheel; 1305, first synchronous belt; 1306, second synchronous belt; 1307, first idler wheel; 1308, second idler wheel; 1309, stabilizing wheel; 1310, stabilizing rod; 14, mounting screw; 15, sliding T-block; 16, adjusting spring; 17, adjusting conical rod; 18, positioning groove; 19, limiting T-block. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods and in conjunction with the accompanying drawings.

[0020] A laser welding auxiliary device for thin plate welds, comprising a welding auxiliary positioning plate 1, wherein mounting holes are provided at the four corners of the welding auxiliary positioning plate 1, wherein mounting screws 14 are inserted into the mounting holes, and the entire device can be stably installed by means of the mounting screws 14. Clamping frames 2 are slidably installed at both ends of the upper surface of the welding auxiliary positioning plate 1, and clamping assemblies 3 are provided in the two clamping frames 2. The clamping frame 2 can drive the clamping assembly 3 to move relative to the welding auxiliary positioning plate 1, and can clamp thin plates of different lengths. The clamping assembly 3 can move up and down relative to the clamping frame 2, and can clamp thin plates of different thicknesses.

[0021] Two mounting plates 5 are symmetrically fixedly installed on the front and rear side walls of the welding auxiliary positioning plate 1, and a lifting component 6 is fixedly installed on the upper surfaces of the four mounting plates 5. A lifting plate 7 is sleeved on the upper end of the lifting component 6. The lifting component 6 can drive the laser welding mechanism 10 to adjust up and down through the lifting plate 7, thereby controlling the welding depth of the thin plate and facilitating the welding of thin plates of different thicknesses.

[0022] The lifting plate 7 is slidably engaged with the middle slot plate 8, and both ends of the middle slot plate 8 are fixedly installed with limited T-shaped blocks 19. The inner walls of the front and rear sides of the lifting plate 7 are provided with limited T-shaped grooves, and the limited T-shaped blocks 19 are slidably engaged with the limited T-shaped grooves. The upper surface of the lifting plate 7 is provided with a moving adjustment component 13, which can adjust the welding position in the XY direction, so that the thin plate welding part can be automatically and efficiently welded through the moving adjustment component 13 and the lifting component 6.

[0023] A movable mounting block 9 is slidably connected in the middle slot plate 8, a laser welding mechanism 10 is fixedly installed at the lower end of the movable mounting block 9, and weld pressing shading components 11 are fixedly installed on both sides of the lower surface of the movable mounting block 9. The weld pressing shading components 11 can stably squeeze both sides of the welding part, reduce the possibility of shaking of the welding position during welding, and can also perform shading treatment on the welding position, thereby improving the protection of the workers.

[0024] The movable adjustment component 13 includes a synchronous first motor 1301 and a synchronous second motor 1302. The synchronous second motor 1302 and the synchronous first motor 1301 are symmetrically fixedly installed at the bottom of the front and rear ends of the left side of the lifting plate 7. The output end of the synchronous first motor 1301 is fixedly installed with a first synchronous wheel 1303, and the output end of the synchronous second motor 1302 is fixedly installed with a second synchronous wheel 1304. The outer surfaces of the first synchronous wheel 1303 and the second synchronous wheel 1304 are respectively wound with a first synchronous belt 1305 and a second synchronous belt 1306, and the first synchronous belt 1305 and the second synchronous belt 1306 are staggered up and down. The second idler wheel 1308 and the first idler wheel 1307 are rotatably installed on the top of the front and rear ends of the right side of the lifting plate 7, respectively; the front and rear ends of the middle part of the lifting plate 7 are symmetrically rotatably installed with a stabilizing wheel 1309 and a stabilizing rod 1310; one end of the first synchronous belt 1305 passes around the stabilizing rod 1310 at the rear end and is fixedly connected to the rear end of the movable mounting block 9; the other end of the first synchronous belt 1305 passes around the stabilizing wheel 1309 at the rear end, the first idler wheel 1307, the second idler wheel 1308 and the stabilizing wheel 1309 at the front end in sequence and is fixedly connected to the front end of the movable mounting block 9; one end of the second synchronous belt 1306 passes around the stabilizing rod 1310 at the front end and is fixedly connected to the front end of the movable mounting block 9; the other end of the second synchronous belt 1306 passes around the stabilizing wheel 1309 at the front end, the second idler wheel 1308, the first idler wheel 1307 and the stabilizing wheel 1309 at the rear end in sequence and is fixedly connected to the rear end of the movable mounting block 9.

[0025] The welding auxiliary positioning plate 1 is symmetrically provided with sliding T-shaped grooves on the left and right ends of the front and rear sides, and the front and rear ends of the clamping frame 2 are symmetrically fixed with sliding T-shaped blocks 15, and the sliding T-shaped blocks 15 are slidably engaged with the sliding T-shaped grooves. Spring grooves are respectively provided on the opposite sides of the two sliding T-shaped blocks 15, and adjusting springs 16 are fixedly installed in the spring grooves. Adjusting conical rods 17 are fixedly installed on the opposite ends of the two adjusting springs 16. A positioning groove 18 is linearly provided on the inner wall of one side of the sliding T-shaped groove, and the end of the adjusting conical rod 17 is slidably engaged with the positioning groove 18.

[0026] The clamping assembly 3 includes a synchronous rope 301 and a clamping plate 302 . A drawing groove 4 is provided in the middle of one side wall of the welding auxiliary positioning plate 1 . The opposite ends of the two synchronous ropes 301 are arranged in the drawing groove 4 . The clamping plate 302 is slidably installed in the clamping frame 2, and guide grooves are provided at both ends of the clamping plate 302. Guide blocks 303 that slide with the guide grooves are fixedly installed on the inner walls at both ends of the clamping frame 2. A linkage rod 304 is fixedly installed on the upper surface of the clamping plate 302. The upper end of the linkage rod 304 passes through the top outer wall of the clamping frame 2. A linkage spring 305 is sleeved on the outer side of the linkage rod 304. The lower end of the linkage spring 305 is fixedly connected to the upper surface of the clamping plate 302, and the upper end is fixedly connected to the top inner wall of the clamping frame 2. The opposite ends of the two synchronization ropes 301 are fixedly connected to the upper ends of the corresponding linkage rods 304. A gantry 12 is provided on the upper surface of the clamping frame 2. A rope hole is provided in the middle of the gantry 12. The synchronization rope 301 passes through The two synchronous ropes 301 pass through the rope hole and extend from one end of the welding auxiliary positioning plate 1 to the groove 4. The opposite ends of the two synchronous ropes 301 (the ends located in the groove 4) are fixedly connected. When welding thin plates of different thicknesses and lengths, the staff pulls the synchronous rope 301 so that the opposite ends of the two synchronous ropes 301 respectively drive the linkage rod 304 to move upward, and the linkage rod 304 drives the clamping plate 302 to move upward in the clamping frame 2. At this time, the linkage spring 305 is gradually compressed, and the staff places the two thin plates under the clamping plate 302 respectively. After the thin plates are placed, the staff releases the synchronous rope 301, thereby restoring the compressed linkage spring 305 to a normal state, thereby providing a spring thrust to the clamping plate 302, so that the clamping plate 302 clamps the thin plate to be welded. By pulling the clamping frame 2 in advance, the adjustable conical rod 17 can be engaged with the positioning groove 18 one by one, so as to adapt to thin plates of different lengths. At this time, the staff needs to align the fitting parts of the two thin plates to achieve the clamping of thin plates of different thicknesses and lengths.

[0027] The lifting assembly 6 includes a lifting motor 601, which is fixedly installed on the lower surface of one of the mounting plates 5. The two mounting plates 5 located on the rear side of the welding auxiliary positioning plate 1 are both rotatably installed with lifting screws 602. The output end of the lifting motor 601 is fixedly connected to the lower end of the corresponding lifting screw 602. Guide rods 603 are fixedly installed above the two mounting plates 5 located on the front side of the welding auxiliary positioning plate 1. Threaded holes threadedly connected to the lifting screws 602 and guide holes with clearance fit with the guide rods 603 are provided on the lifting plate 7. Lifting sprockets 604 are fixedly installed on the lower ends of the outer surfaces of the two lifting screws 602, and the two lifting sprockets 604 are connected through a lifting chain 605.

[0028] After the thin plate is placed, the staff turns on the lifting motor 601. Through the cooperation between the lifting motor 601, the lifting sprocket 604 and the lifting chain 605, the two lifting screws 602 can be rotated synchronously. At the same time, under the guide limit of the guide rod 603, the lifting plate 7 can be stably lowered, and then the welding position can be stably welded through the laser welding mechanism 10. At the same time, the synchronous first motor 1301 and the synchronous second motor 1302 are turned on. When the synchronous first motor 1301 and the synchronous second motor 1302 rotate in the same direction, the first synchronous belt 1305 and the second synchronous belt 1306 drive the movable installation block 9 to move horizontally along the middle groove plate 8. When the synchronous first motor 1301 and the synchronous second motor 1302 rotate synchronously in opposite directions, the first synchronous belt 1305 and the second synchronous belt 1306 drive the middle groove plate 8 and the movable installation block 9 to move along the lifting plate 7. The movable adjustment component 13 has high precision and strong stability, and can accurately weld the welding position.

[0029] The weld pressing light shielding assembly 11 comprises a pressing cylinder 1101, a ball box 1102 is fixedly installed at the lower end of the pressing cylinder 1101, a sliding ball 1103 is uniformly rolled and clamped in the ball box 1102, and light shielding plates 1104 are fixedly connected to the opposite sides of the two ball boxes 1102. When welding a thin plate, the pressing cylinder 1101 is turned on, the piston rod of the pressing cylinder 1101 is extended and drives the ball box 1102 to move downward, so that the sliding ball 1103 in the ball box 1102 squeezes the thin plate, thereby improving the stability of the welding part, and at the same time, the welding position can be shielded by the light shielding plate 1104, which can protect the staff.

[0030] The present invention also provides a thin plate welded part laser welding method based on the above-mentioned thin plate welded part laser welding auxiliary device, comprising the following steps: S1: Select a suitable location for installation: install the welding auxiliary positioning plate 1 to a suitable location through the installation screw 14; S2: Adjust the position of the clamping frame 2: Pull the clamping frame 2 so that the tapered rod 17 is adjusted to engage with the positioning grooves 18 in the sliding T-slot one by one, thereby adapting to the length of the thin plate to be welded; S3: Clamping the thin plate to be welded: Pull one end of the synchronization rope 301 located in the pull groove 4, so that the synchronization rope 301 overcomes the elastic force of the linkage spring 305 to pull the linkage rod 304 upward, and the linkage rod 304 drives the clamping plate 302 to move upward synchronously, so that the staff can place the thin plate to be welded. After the welded thin plate is placed in place, the synchronization rope 301 is released, the linkage spring 305 is reset and pushes the clamping plate 302 to clamp the thin plate to be welded, so as to perform welding; S4: Control the depth of laser welding of the thin plate according to the thickness of the thin plate: By controlling the rotation direction (forward or reverse) of the lifting motor 601, the lifting plate 7 can drive the laser welding mechanism 10 to move up and down, thereby controlling the depth of welding of the thin plate, which is convenient for welding thin plates of different thicknesses; S5: Adjusting the welding position: By driving the synchronous first motor 1301 and the synchronous second motor 1302, the first synchronous belt 1305 and the second synchronous belt 1306 can drive the movable mounting block 9 to move horizontally in the XY direction, thereby adjusting the welding position; S6: Shielding and stably squeezing and clamping the welding point of the thin plate: By squeezing the cylinder 1101 and the shading plate 1104, the welding point of the thin plate can be squeezed and clamped to prevent the welding position from shaking and improve the welding quality.

[0031] The front, back, left and right in the present invention are based on Figure 1 In terms of the viewing direction shown, the side facing the staff is the front, and the side facing away from the staff is the rear; the side located on the left hand side of the staff is the left, and the side located on the right hand side of the staff is the right.

[0032] Technical features not described in the present invention can be implemented by existing technologies and will not be described in detail here. The present invention is not limited to the above specific embodiments, and changes, modifications, additions or substitutions made by ordinary technicians in the field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A laser welding auxiliary device for thin plate welded parts, comprising a welding auxiliary positioning plate (1), wherein both ends of the upper surface of the welding auxiliary positioning plate (1) are slidably mounted with a clamping frame (2), characterized in that: A clamping assembly (3) is provided in each of the two clamping frames (2), the clamping assembly (3) comprising a synchronous rope (301), a groove (4) is provided in the middle of one side wall of the welding auxiliary positioning plate (1), the opposite ends of the two synchronous ropes (301) are provided in the groove (4), two mounting plates (5) are symmetrically fixedly installed on the front and rear side walls of the welding auxiliary positioning plate (1), a lifting assembly (6) is fixedly installed on the upper surfaces of the four mounting plates (5), a lifting plate (7) is sleeved on the upper end of the lifting assembly (6), a movable adjustment assembly (13) is provided on the upper surface of the lifting plate (7), a middle slot plate (8) is slidably clamped in the lifting plate (7), a movable mounting block (9) is slidably clamped in the middle slot plate (8), a laser welding mechanism (10) is fixedly installed on the lower end of the movable mounting block (9), and weld seam pressing shading assemblies (11) are fixedly installed on both sides of the lower surface of the movable mounting block (9).

2. The laser welding auxiliary device for thin plate welding parts according to claim 1, characterized in that: The movement and adjustment component (13) comprises a first synchronous motor (1301) and a second synchronous motor (1302); the second synchronous motor (1302) and the first synchronous motor (1301) are symmetrically fixedly mounted at the bottom of the front and rear ends of the left side of the lifting plate (7); a first synchronous wheel (1303) is fixedly mounted at the output end of the first synchronous motor (1301); a second synchronous wheel (1304) is fixedly mounted at the output end of the second synchronous motor (1302); a first synchronous belt (1305) and a second synchronous belt (1306) are respectively wound around the outer surfaces of the first synchronous wheel (1303) and the second synchronous wheel (1304); a second idler wheel (1308) and a first idler wheel (1307) are respectively rotatably mounted at the top of the front and rear ends of the right side of the lifting plate (7); and the front and rear ends of the middle part of the lifting plate (7) are both symmetrically rotatable. A stabilizing wheel (1309) and a stabilizing rod (1310) are installed on the movable mounting block (9); one end of the first synchronous belt (1305) passes around the stabilizing rod (1310) at the rear end and is fixedly connected to the rear end of the movable mounting block (9); the other end of the first synchronous belt (1305) passes around the stabilizing wheel (1309) at the rear end, the first idler wheel (1307), the second idler wheel (1308) and the stabilizing wheel (1309) at the front end in sequence and is fixedly connected to the front end of the movable mounting block (9); one end of the second synchronous belt (1306) passes around the stabilizing rod (1310) at the front end and is fixedly connected to the front end of the movable mounting block (9); the other end of the second synchronous belt (1306) passes around the stabilizing wheel (1309) at the front end, the second idler wheel (1308), the first idler wheel (1307) and the stabilizing wheel (1309) at the rear end in sequence and is fixedly connected to the rear end of the movable mounting block (9).

3. The laser welding auxiliary device for thin plate welding parts according to claim 2 is characterized in that: The first synchronous belt (1305) and the second synchronous belt (1306) are arranged in an up-and-down staggered manner.

4. A laser welding auxiliary device for thin plate welding parts according to claim 1, 2 or 3, characterized in that: The welding auxiliary positioning plate (1) is symmetrically provided with sliding T-shaped grooves at the left and right ends of the front and rear sides, and the front and rear ends of the clamping frame (2) are symmetrically fixedly connected with sliding T-shaped blocks (15). The sliding T-shaped blocks (15) are slidably engaged with the sliding T-shaped grooves. Spring grooves are respectively provided on the opposite sides of the two sliding T-shaped blocks (15). Adjustment springs (16) are fixedly installed in the spring grooves. Adjustment conical rods (17) are fixedly installed at the opposite ends of the two adjustment springs (16). A positioning groove (18) is linearly provided on the inner wall of one side of the sliding T-shaped groove. The end of the adjustment conical rod (17) is slidably engaged with the positioning groove (18).

5. The laser welding auxiliary device for thin plate welding parts according to claim 4 is characterized in that: The clamping assembly (3) further comprises a clamping plate (302), wherein the clamping plate (302) is slidably mounted in the clamping frame (2), guide grooves are provided at both ends of the clamping plate (302), guide blocks (303) slidably engaged with the guide grooves are fixedly mounted on the inner walls at both ends of the clamping frame (2), a linkage rod (304) is fixedly mounted on the upper surface of the clamping plate (302), the upper end of the linkage rod (304) passes through the top outer wall of the clamping frame (2), and a linkage spring (305) is sleeved on the outer side of the linkage rod (304). The lower end of the linkage spring (305) is fixedly connected to the upper surface of the clamping plate (302), and the upper end is fixedly connected to the inner wall of the top end of the clamping frame (2). The opposite ends of the two synchronization ropes (301) are fixedly connected to the upper ends of the corresponding linkage rods (304). The upper surface of the clamping frame (2) is provided with a gantry (12). A rope hole is opened in the middle of the gantry (12). The synchronization rope (301) passes through the rope hole and extends from one end of the welding auxiliary positioning plate (1) to the pull groove (4). The opposite ends of the two synchronization ropes (301) are fixedly connected.

6. The laser welding auxiliary device for thin plate welding parts according to claim 5, characterized in that: The lifting assembly (6) comprises a lifting motor (601), wherein the lifting motor (601) is fixedly mounted on the lower surface of one of the mounting plates (5), and the two mounting plates (5) located at the rear side of the welding auxiliary positioning plate (1) are both rotatably mounted with lifting screws (602), the output end of the lifting motor (601) is fixedly connected to the lower end of the corresponding lifting screw (602), and the upper part of the two mounting plates (5) located at the front side of the welding auxiliary positioning plate (1) are both fixedly mounted with guide rods (603), and the lifting plate (7) is provided with a threaded hole threadedly connected to the lifting screw (602) and a guide hole with a clearance fit with the guide rod (603), and the lower ends of the outer surfaces of the two lifting screws (602) are both fixedly mounted with lifting sprockets (604), and the two lifting sprockets (604) are connected by a lifting chain (605).

7. The laser welding auxiliary device for thin plate welding parts according to claim 6, characterized in that: Limiting T-shaped blocks (19) are fixedly mounted on both ends of the middle slot plate (8), and limiting T-shaped grooves are provided on the inner walls on both the front and rear sides of the lifting plate (7), and the limiting T-shaped blocks (19) are slidably engaged with the limiting T-shaped grooves.

8. The laser welding auxiliary device for thin plate welding parts according to claim 7, characterized in that: The weld pressing shading assembly (11) comprises a pressing cylinder (1101), a ball box (1102) being fixedly mounted at the lower end of the pressing cylinder (1101), a sliding ball (1103) being uniformly rolled and clamped in the ball box (1102), and shading plates (1104) being fixedly connected to opposite sides of the two ball boxes (1102).

9. The laser welding auxiliary device for thin plate welding parts according to claim 8, characterized in that: The four corners of the welding auxiliary positioning plate (1) are provided with mounting holes, and mounting screws (14) are inserted into the mounting holes.

10. A laser welding method for thin plate welded parts based on the laser welding auxiliary device for thin plate welded parts according to any one of claims 1 to 9, characterized in that: The steps include: S1: Select a suitable location for installation: install the welding auxiliary positioning plate (1) to a suitable location by means of the mounting screw (14); S2: adjusting the position of the clamping frame (2): pulling the clamping frame (2) so that the adjusting conical rod (17) and the positioning grooves (18) in the sliding T-shaped groove are engaged one by one, thereby adapting to the length of the thin plate to be welded; S3: Clamping the thin plate to be welded: pulling one end of the synchronization rope (301) located in the pull groove (4), so that the synchronization rope (301) overcomes the elastic force of the linkage spring (305) and pulls the linkage rod (304) to move upward, and the linkage rod (304) drives the clamping plate (302) to move upward synchronously, so that the staff can place the thin plate to be welded. After the welded thin plate is placed in place, the synchronization rope (301) is released, the linkage spring (305) is reset and pushes the clamping plate (302) to clamp the thin plate to be welded, so as to perform welding; S4: Controlling the depth of laser welding of the thin plate according to the thickness of the thin plate: by controlling the rotation direction of the lifting motor (601), the lifting plate (7) can drive the laser welding mechanism (10) to move up and down, thereby controlling the depth of welding of the thin plate, thereby facilitating welding of thin plates of different thicknesses; S5: Adjusting the welding position: by driving the synchronous first motor (1301) and the synchronous second motor (1302), the first synchronous belt (1305) and the second synchronous belt (1306) can drive the movable mounting block (9) to move horizontally in the XY direction, thereby adjusting the welding position; S6: shielding and stably squeezing and clamping the thin plate welding point position: by squeezing the cylinder (1101) and the shading plate (1104), the thin plate welding point position can be squeezed and clamped to prevent the welding position from shaking, thereby improving the welding quality.

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