A sheet metal welding device

Abstract

This invention relates to the field of welding equipment technology, specifically disclosing a sheet metal welding device, including a frame and a welding robot. A slide block is slidably arranged along the length of the frame, and the upper surface of the slide block is in contact with the end of the sheet metal part. A positioning frame is provided on the frame, with positioning grooves on both sides of the positioning frame. A grinding plate is provided at the positioning groove of the positioning frame. A drive mechanism for moving the positioning frame vertically is provided on the frame, and an adjustment mechanism for moving the positioning frame back and forth along the width of the frame is provided on the frame. After the ends of two sheet metal parts abut against the upper surface of the slide block, the drive mechanism drives the positioning frame to descend, so that the grinding plate at the positioning groove abuts against the position to be welded on the sheet metal part. Then, the adjustment mechanism drives the positioning frame to move back and forth along the width of the frame to grind the position to be welded on the sheet metal part. The sheet metal welding device of this invention can improve the welding quality of sheet metal parts.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more specifically to a sheet metal welding device. Background Technology

[0002] Sheet metal processing is a comprehensive cold working process for thin metal sheets (usually less than 6mm). It includes shearing, punching / cutting / combined cutting, bending, welding, riveting, splicing, and forming (such as car bodies). Its significant characteristic is that the thickness of the same part is consistent. Workpieces processed by sheet metal processing are usually called sheet metal parts. Sheet metal parts have the characteristics of light weight, high strength, conductivity (which can be used for electromagnetic shielding), low cost, and good mass production performance. They have been widely used in electronics, communications, automotive industry, medical devices and other fields.

[0003] Welding equipment refers to the equipment required to realize the welding process. Welding equipment includes welding machines, welding process equipment, and welding auxiliary tools. The main types of welding equipment include electric welding machines, flame welding equipment, and other welding equipment. Among them, welding robots are the most commonly used welding equipment. Welding robots are industrial robots with welding clamps or welding (cutting) guns attached to the end flange of the axis, enabling them to perform welding, cutting, or thermal spraying. Welding robots have the characteristics of high flexibility and environmental adaptability, and are suitable for various types of customized welding work in complex environments. In the welding process of sheet metal parts, welding robots are required to perform welding processing on sheet metal parts.

[0004] Chinese patent document CN223932918U discloses a sheet metal welding device, including a vertically spaced workbench and a welding robot. The workbench contains a drive mechanism and a chute, with a support rod slidably mounted inside the chute. A hollow material-carrying frame is connected to the outside of the workbench via the drive mechanism and the support rod. A triangular toothed plate is fixed to the top of the material-carrying frame. A slag-collecting trough with an opening facing the material-carrying frame is located at the bottom of the workbench, and the length of the slag-collecting trough is greater than the length of the material-carrying frame. Rollers and flange support plates parallel to the material-carrying frame are vertically arranged sequentially inside the chute, with both ends of the rollers rotatably mounted on the top of adjacent flange support plates. The support rod is located on one side inside the chute. The system includes a concave bearing seat with a limiting wheel rotatably mounted at the opening of the concave bearing seat, spaced apart from the inner wall of the slide groove. An exhaust duct is provided inside the material-carrying frame, and suction holes and suction pipes are spaced apart on the outer side of the material-carrying frame, both communicating with the exhaust duct. A filter tank and an air pump are sequentially connected to the end of the suction pipe furthest from the exhaust duct, and the filter tank and air pump are vertically offset from the material-carrying frame. The drive mechanism includes a belt installed inside the workbench, with both ends of the belt bent and connected to the outer sides of adjacent bracket support bars, and traction wheels are provided at the bends of the belt. A brake motor is connected to the middle of one of the traction wheels. Lifting lugs offset from the belt are fixed on both sides of the material-carrying frame, and angle steel is fixed to the four edges on the outer side of the material-carrying frame.

[0005] During operation, the workbench is bolted to the ground to stably place sheet metal parts laterally. The welding robot, which has six degrees of freedom, is suspended by a ceiling rail. Alternatively, an electric slide rail can be used to move the welding robot longitudinally. During welding, cold water is poured into a slag-collecting tank, with a layer of fine sand at the bottom to catch falling welding slag. A hollow material-carrying frame and side-by-side triangular toothed plates outside the workbench support the sheet metal parts. Because the gaps in the material-carrying frame are much wider than the welding slag, the slag can fall off smoothly. The tips of the triangular toothed plates support the bottom surface of the sheet metal parts, ensuring a safe distance between the weld and the material-carrying frame. The large spacing between the triangular toothed plates also allows the welding slag to fall off as the drive mechanism pulls the support rod to move the material-carrying frame and sheet metal parts along the slide. After the air pump is started, it draws air from the filter tank to create a negative pressure air source, which then draws in harmful gases through the suction pipe.

[0006] In the above technology, sheet metal parts are placed on a triangular toothed plate and welded by a welding robot. When there is oxide scale, rust, oil stains or burrs on the sheet metal parts, welding the sheet metal parts will easily result in poor welding quality. Summary of the Invention

[0007] This invention provides a sheet metal welding device, which aims to solve the technical problem in the prior art where sheet metal parts are placed on a triangular toothed plate and welded by a welding robot. When the sheet metal parts have oxide scale, rust, oil stains or burrs, welding the sheet metal parts can easily lead to poor welding quality.

[0008] This invention discloses a sheet metal welding device, comprising a frame and a welding robot disposed on one side of the frame for welding sheet metal parts. Two slide blocks are slidably disposed along the length of the frame, with the upper surface of the slide blocks abutting the ends of the sheet metal parts. A positioning frame is disposed on the frame between the two slide blocks, with positioning grooves on both sides of the positioning frame for the sheet metal parts to extend into. A grinding plate is disposed on the positioning frame at the positioning grooves. A drive mechanism is disposed on the frame for moving the positioning frame vertically, and an adjustment mechanism is disposed on the frame for reciprocating the positioning frame along the width of the frame. After the ends of the two sheet metal parts abut against the upper surfaces of the slide blocks, the drive mechanism drives the positioning frame to descend, causing the grinding plate at the positioning grooves to abut against the welding position on the sheet metal parts. Then, the adjustment mechanism drives the positioning frame to reciprocate along the width of the frame to grind the welding position on the sheet metal parts.

[0009] Beneficial effects: Through the setup of the positioning frame, positioning groove, drive mechanism, and adjustment mechanism, when sheet metal parts need to be welded, two sheet metal parts are first placed on the slide, with the ends of the sheet metal parts abutting against the upper surface of the slide. At the same time, the sheet metal parts are located in the positioning groove. Then, the drive mechanism drives the positioning frame to descend slightly, so that the grinding plate at the positioning groove abuts against the position to be welded on the sheet metal part. Then, the adjustment mechanism drives the positioning frame to move back and forth along the width of the frame to grind the position to be welded on the sheet metal part, thereby grinding off the oxide scale, rust, oil stains, or burrs on the sheet metal parts, improving the subsequent welding quality of the sheet metal parts. During welding, the two slides move away from each other. Then, the drive mechanism drives the positioning frame to descend. After the positioning frame descends below the slide, the two slides move closer together, causing the two sheet metal parts to abut against each other. Then, the welding robot performs welding processing on the two sheet metal parts.

[0010] Preferably, the drive mechanism includes a first linear driver fixedly installed at the bottom of the frame, the drive shaft of the first linear driver being fixedly connected to a support frame, and the positioning frame being disposed within the support frame.

[0011] Beneficial effects: By setting up the first linear actuator and the support frame, the first linear actuator drives the support frame and the positioning frame to move in the vertical direction, realizing the contact and separation between the grinding plate and the sheet metal part to be welded. The structure is simple, the control is convenient, and the operation is stable.

[0012] Preferably, the adjustment mechanism includes a rotation source fixedly installed on the side wall of the support frame and an adjustment component for driving the positioning frame to reciprocate along the width direction of the frame.

[0013] Beneficial effects: By setting the rotation source drive adjustment component, when the rotation source drive adjustment component moves, it can drive the positioning frame to move back and forth along the width direction of the frame, realize automatic grinding of the position to be welded, and the grinding speed and stroke are adjustable to adapt to different grinding requirements.

[0014] Preferably, the adjustment assembly includes a first rotating column disposed on the drive shaft of the rotation source, a connecting column fixedly connected to one side of the first rotating column, and a second rotating column fixedly connected to the end of the connecting column away from the first rotating column. The positioning frame has a straight groove for the connecting column to pass through. When the first rotating column, the connecting column, and the second rotating column rotate, the connecting column slides in the straight groove and can drive the positioning frame to move in the horizontal direction.

[0015] Beneficial effects: By setting the first rotating column, the connecting column and the second rotating column, when the first rotating column, the connecting column and the second rotating column rotate, they can drive the positioning frame to move in the horizontal direction, and realize the linear reciprocating motion of the positioning frame.

[0016] Preferably, the bottom wall of the positioning groove is provided with a material discharge groove for the grinding waste to fall.

[0017] Beneficial effects: With the addition of the material drop chute, the metal dust and debris generated during the grinding process can fall automatically through the chute, making it easy to collect and process, and avoiding the adverse effects of waste accumulation on the grinding and welding processes.

[0018] Preferably, a second linear driver is provided on the top of both sides of the frame, and the slide is fixedly connected to the drive shaft of the second linear driver.

[0019] Beneficial effect: The second linear drive enables the slide to slide on the frame, facilitating the welding of sheet metal parts.

[0020] Preferably, the slide is provided with two clamping frames, and the clamping frames are provided with clamping components that cooperate with the upper surface of the slide to clamp and release the sheet metal parts.

[0021] Beneficial effects: The combination of clamping frame and pressing component can firmly clamp both sides of sheet metal parts, preventing them from shifting or shaking during grinding and welding, thus improving welding accuracy.

[0022] Preferably, the clamping assembly includes a drive screw rotatably coupled to a clamping frame, the drive screw being threadedly connected to a movable frame, and the bottom of the movable frame being rotatably connected to a clamping wheel for clamping and releasing the sheet metal part.

[0023] Beneficial effects: With the movable frame and clamping rollers, when the clamping rollers clamp the sheet metal parts, there is rolling friction between the clamping rollers and the sheet metal parts, which greatly reduces scratches and wear on the surface of the sheet metal parts and protects the surface quality of the sheet metal parts. At the same time, the clamping force can be easily adjusted by rotating the drive screw to meet the clamping requirements of sheet metal parts of different thicknesses.

[0024] Preferably, a horizontally arranged rotating screw is rotatably connected inside the slide block, and the clamping frame is threadedly connected to the rotating screw. When the rotating screw rotates, it can cause a group of clamping frames to move closer to or further away from each other.

[0025] Beneficial effects: When the lead screw rotates, it can drive the two clamping frames to move synchronously, and can quickly adjust the distance between the two clamping frames according to the width of the sheet metal part. The adjustment accuracy is high and the operation is convenient.

[0026] Preferably, both sides of the top of the positioning frame are set as inclined surfaces. When welding is performed on the sheet metal part at the welding position, the two slides come close to each other and abut against the inclined surfaces of the positioning frame.

[0027] Beneficial effects: During welding, the positioning frame can support and position the slide, further improving the stability of the slide, thereby ensuring the stability of the sheet metal parts during the welding process and improving the welding quality.

[0028] The beneficial effects of this invention are as follows: 1. In this invention, by setting up a positioning frame, a positioning groove, a driving mechanism, and an adjusting mechanism, when it is necessary to weld sheet metal parts, two sheet metal parts are first placed on the slide block, and the ends of the sheet metal parts abut against the upper surface of the slide block. At the same time, the sheet metal parts are located in the positioning groove. Then, the driving mechanism drives the positioning frame to descend slightly, so that the grinding plate at the positioning groove abuts against the position to be welded on the sheet metal parts. Then, the adjusting mechanism drives the positioning frame to move back and forth along the width direction of the frame to grind the position to be welded on the sheet metal parts, thereby grinding off the oxide scale, rust, oil stains, or burrs on the sheet metal parts, improving the subsequent welding quality of the sheet metal parts. During welding, the two slide blocks move away from each other. Then, the driving mechanism drives the positioning frame to descend. After the positioning frame descends below the slide block, the two slide blocks move closer to each other, and drive the two sheet metal parts to abut together. Then, the welding robot performs welding processing on the two sheet metal parts.

[0029] 2. In this invention, the rotating source drives the adjustment component to move, thereby driving the positioning frame to move back and forth along the width of the frame, so as to realize automatic grinding of the position to be welded. The grinding speed and stroke are adjustable, which can adapt to different grinding requirements.

[0030] 3. In this invention, by setting up a material drop chute, the metal dust and debris generated during the grinding process can fall automatically through the material drop chute, which is convenient for centralized collection and treatment, and avoids the adverse effects of waste accumulation on the grinding and welding processes.

[0031] 4. In this invention, the clamping frame and the pressing component work together to firmly clamp both sides of the sheet metal part, preventing the sheet metal part from shifting or shaking during grinding and welding, thus improving welding accuracy.

[0032] 5. In this invention, a rotating clamping wheel is used to clamp the sheet metal parts. The clamping wheel and the sheet metal parts are subjected to rolling friction, which greatly reduces scratches and wear on the surface of the sheet metal parts and protects the surface quality of the sheet metal parts. At the same time, the clamping force can be easily adjusted by rotating the drive screw to meet the clamping requirements of sheet metal parts of different thicknesses. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 This is a structural schematic diagram illustrating the connection relationship between the support frame and the positioning frame of the present invention.

[0035] Figure 3 This is a schematic diagram of the straight groove structure of the present invention.

[0036] Figure 4 This is a structural schematic diagram illustrating the connection relationship between the clamping frame and the drive screw according to the present invention.

[0037] Figure 5 This is a structural schematic diagram illustrating the positional relationship between the clamping frame and the movable frame of the present invention.

[0038] Figure 6 This is a structural schematic diagram illustrating the connection relationship between the pressure wheel and the movable frame according to the present invention.

[0039] Figure 7 This is a structural schematic diagram illustrating the connection relationship between the connecting column and the second rotating column according to the present invention.

[0040] Figure 8 This is a schematic diagram illustrating the connection relationship between the rotation source and the first rotation column of the present invention.

[0041] Figure label: 1. Frame; 11. Welding robot; 12. Slide; 121. Second linear actuator; 13. Positioning frame; 14. Positioning groove; 141. Discharge chute; 15. Clamping frame; 151. Rotating lead screw; 16. Drive lead screw; 17. Moving frame; 18. Pressure wheel; 2. Drive mechanism; 21. First linear actuator; 22. Support frame; 3. Adjustment mechanism; 31. Rotation source; 32. First rotating column; 33. Connecting column; 34. Second rotating column; 35. Straight groove. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] Reference Figures 1-8The present invention discloses a sheet metal welding device, comprising a frame 1 placed on a horizontal plane, a welding robot 11 disposed on one side of the frame 1 for welding sheet metal parts, a slide 12, a positioning frame 13, a drive mechanism 2, and an adjustment mechanism 3. The welding robot 11 is fixedly mounted on the ground by a mounting base. The welding robot 11 is a six-axis industrial robot with six degrees of freedom, capable of lifting, rotating, and adjusting to perform welding processing on the sheet metal parts on the frame 1. The upper surface of the slide 12 is provided with... The sheet metal parts have curved surfaces that fit together at the ends. Two slide blocks 12 are provided, symmetrically arranged along the width of the frame 1. The slide blocks 12 slide against the frame 1 along its length. A positioning frame 13 is located between the two slide blocks 12. Positioning grooves 14 for the sheet metal parts to extend into are provided on both sides of the positioning frame 13. A grinding plate (not shown in the figure) is fixedly installed at the positioning grooves 14 on the positioning frame 13. The drive mechanism 2 moves the positioning frame 13 vertically, and the adjustment mechanism 3 moves the positioning frame 13 along the frame. The width direction of the slide 1 moves back and forth; when welding sheet metal parts is required, first place two sheet metal parts on the upper surfaces of the two slides 12 respectively, and make the welding positions of the two sheet metal parts abut together. At this time, the sheet metal parts are inserted into the positioning groove 14 of the positioning frame 13. After the two sheet metal parts are placed, the drive mechanism 2 works, and the drive mechanism 2 drives the positioning frame 13 to descend, so that the grinding plate at the positioning groove 14 abuts against the welding position on the sheet metal part. Then the drive mechanism 2 stops working, and then the adjustment mechanism 3 works, and the adjustment mechanism 3 drives the positioning frame 13 to descend. Positioning frame 13 moves back and forth along the width of frame 1 to grind the welding position on the sheet metal part. After the sheet metal part is ground, the two slides 12 move away from each other. Then, the drive mechanism 2 drives the positioning frame 13 to descend. After the positioning frame 13 descends below the slides 12, the two slides 12 move closer to each other and drive the two sheet metal parts to abut together. Then, the welding robot 11 welds the two sheet metal parts. After the sheet metal parts are welded, the sheet metal parts are removed from the slides 12, thus completing the welding operation of the sheet metal parts.

[0044] Reference Figure 1 and Figure 2 The welding robot 11 has a welding gun mounting bracket installed on its end flange. The welding gun is fixed to the mounting bracket with bolts. The welding gun is connected to the welding power source, wire feeder and carbon dioxide cylinder through welding cable, wire feed tube and gas pipe respectively.

[0045] Reference Figure 1 , Figure 2 and Figure 3The drive mechanism 2 includes a first linear driver 21 fixedly installed at the bottom of the frame 1. The first linear driver 21 is vertically arranged, and the drive shaft of the first linear driver 21 is fixedly connected to a support frame 22. The top of the support frame 22 is provided with an opening, and a positioning frame 13 is disposed inside the support frame 22. The positioning frame 13 slides along the length of the support frame 22 and is engaged with the support frame 22. When it is necessary to move the positioning frame 13 in the vertical direction, the first linear driver 21 is activated, and the first linear driver 21 can drive the support frame 22 to move in the vertical direction. The support frame 22 drives the positioning frame 13 to move in the vertical direction. When the drive shaft of the first linear driver 21 extends, the first linear driver 21 can drive the support frame 22 to rise. When the drive shaft of the first linear driver 21 retracts, the first linear driver 21 can drive the support frame 22 to fall.

[0046] Reference Figure 2 , Figure 3 and Figure 7 The adjustment mechanism 3 includes a rotation source 31 fixedly installed on the side wall of the support frame 22 and an adjustment assembly for driving the positioning frame 13 to reciprocate along the width direction of the frame 1, combined with Figure 8 The rotation source 31 is directly powered by an electric motor, and the housing of the rotation source 31 is fixedly connected to the support frame 22.

[0047] Reference Figure 2 , Figure 3 and Figure 7 The adjustment assembly includes a first rotating column 32 fixedly mounted on the drive shaft of the rotation source 31. A connecting column 33 is fixedly connected to the side of the first rotating column 32 away from the rotation source 31, and a second rotating column 34 is fixedly connected to the end of the connecting column 33 away from the first rotating column 32. The first rotating column 32, the connecting column 33, and the second rotating column 34 are all horizontally arranged. A straight groove 35 for the connecting column 33 to pass through is provided on the positioning frame 13. The straight groove 35 is a vertically arranged waist-shaped structure. When the rotation source 31 is started, the rotation source 31 drives the first rotating column 32 to rotate, and the first rotating column 32 drives... The connecting column 33 rotates, which drives the second rotating column 34 to rotate. When the connecting column 33 rotates, it can slide up and down in the straight groove 35, thereby driving the positioning frame 13 to move in the horizontal direction. The positioning frame 13 drives the grinding plate to move back and forth to perform grinding operations on the welding position of the sheet metal part. Furthermore, by starting the first linear driver 21, the support frame 22 is driven to descend, and the support frame 22 drives the positioning frame 13 to descend, which can drive the grinding plate to descend slightly to achieve precise grinding of the sheet metal part. After the sheet metal part is ground, the rotation source 31 is turned off.

[0048] Reference Figure 2 and Figure 3The bottom wall of the positioning groove 14 is provided with a material drop trough 141 for the waste material from grinding to fall. Multiple material drop troughs 141 are arranged at intervals along the length of the positioning frame 13. When the positioning frame 13 grinds the position of the sheet metal part to be welded, the metal dust and debris generated can fall automatically through the material drop trough 141, which is convenient for centralized collection and treatment, and at the same time avoids the accumulation of waste material from having an adverse effect on the grinding and welding processes.

[0049] Reference Figure 1 and Figure 2 A second linear actuator 121 is installed on the top of both sides of the frame 1. The second linear actuator 121 is horizontally positioned and is directly a cylinder. The cylinder body of the second linear actuator 121 is fixedly connected to the frame 1, and the slide 12 is fixedly connected to the drive shaft of the second linear actuator 121. When the second linear actuator 121 is activated, the drive shafts of the two second linear actuators 121 extend, which drives the two slides 12 to slide along the length of the frame 1, while the two slides 12 slide towards each other. When the sheet metal part is ground, the second linear actuator 121 is activated again, and the drive shafts of the two second linear actuators 121 retract. The two slide blocks 12 can be driven to slide along the length of the frame 1, while the two slide blocks 12 slide in a direction away from each other. The slide blocks 12 drive the clamping frame 15 and the two sheet metal parts to slide in a direction away from each other. When the second linear drive 121 is activated, the drive shafts of the two second linear drives 121 extend, which can drive the two slide blocks 12 to slide along the length of the frame 1, while the two slide blocks 12 slide in a direction closer to each other, which drives the clamping frame 15 and the two sheet metal parts to slide. When the two slide blocks 12 abut together, the second linear drive 121 is turned off. At this time, the two sheet metal parts abut together, and the slide blocks 12 abut against the inclined surface of the positioning frame 13.

[0050] Reference Figure 2 , Figure 4 and Figure 5 Each slide 12 is equipped with two clamping brackets 15, combined with Figure 6The clamping frame 15 is configured with an "L" shape, and the two clamping frames 15 can move closer or further apart along the length of the slide 12. The clamping frame 15 is equipped with a clamping assembly that cooperates with the upper surface of the slide 12 to clamp and release the sheet metal part. The clamping assembly includes a drive screw 16 rotatably coupled to the clamping frame 15. A support plate is fixedly mounted on the clamping frame 15, and the support plate provides rotatable support for the drive screw 16. The drive screw 16 is threadedly connected to a movable frame 17. The lower surface of the movable frame 17 is configured as an arc-shaped surface adapted to the upper surface of the slide 12. The movable frame 17 slides vertically within the clamping frame 15. The bottom of the movable frame 17 is rotatably connected to... The slide 12 is equipped with clamping rollers 18 for clamping and releasing sheet metal parts. Two sets of clamping rollers 18 are provided in the movable frame 17, and each set includes multiple clamping rollers 18 spaced apart along the length of the slide 12. The two sets of clamping rollers 18 are adapted to the upper surface of the slide 12. When it is necessary to fix and clamp the sheet metal parts placed on the upper surface of the slide 12, the drive screw 16 is rotated. When the drive screw 16 rotates, it drives the movable frame 17 to move up or down. The movable frame 17 drives the clamping rollers 18 to move up or down. When the clamping rollers 18 move down, they can cooperate with the slide 12 to fix and clamp the sheet metal parts. When the clamping rollers 18 move up, they no longer fix and clamp the sheet metal parts.

[0051] Reference Figure 1 and Figure 2 The slide 12 is rotatably connected to a horizontally arranged rotating screw 151. The slide 12 provides rotatable support for the rotating screw 151. The clamping frame 15 is threadedly connected to the rotating screw 151. When the rotating screw 151 is rotated, the two clamping frames 15 in the same group can be brought closer to each other or moved away from each other, thereby adjusting the position between the two clamping frames 15 to accommodate sheet metal parts of different widths.

[0052] Reference Figure 1 , Figure 2 and Figure 3 The top two sides of the positioning frame 13 are both set as inclined surfaces, and the bottom of the slide 12 is provided with a surface adapted to the inclined surfaces. When welding is performed on the sheet metal part at the welding position, when the two slides 12 come close to each other, the slides 12 can abut against the inclined surfaces of the positioning frame 13 (its state is as follows). Figure 2 (As shown).

[0053] The implementation principle of the sheet metal welding device of the present invention is as follows: When it is necessary to weld sheet metal parts, the distance between each set of clamping frames 15 is first adjusted. During adjustment, the rotating screw 151 is rotated first. When the rotating screw 151 rotates, it can drive the two clamping frames 15 in the same set to move closer or further away from each other, thereby adjusting the position between the two clamping frames 15 to adapt to sheet metal parts of different widths. After the clamping frame 15 is slidably adjusted, the two sheet metal parts are placed on the upper surfaces of the two slide blocks 12 respectively, and the welding positions of the two sheet metal parts are brought together. At this time, the sheet metal parts are inserted into the positioning groove 14 of the positioning frame 13. After the two sheet metal parts are placed, the sheet metal parts placed on the upper surface of the slide block 12 are fixedly clamped. When clamping, the drive screw 16 is rotated first. When the drive screw 16 rotates, it can drive the moving frame 17 to move down. The moving frame 17 drives the pressure wheel 18 to move down. When the pressure wheel 18 moves down, it can cooperate with the slide block 12 to fix the sheet metal parts. In the same way, the positions of the other three pressure wheels 18 are adjusted in sequence to fix the sheet metal parts. After the sheet metal parts are fixed, the drive mechanism 2 then works, starting the first linear driver 21. The first linear driver 21 can drive the support frame 22 to descend, and the support frame 22 drives the positioning frame 13 to descend, so that the grinding plate at the positioning groove 14 abuts against the position to be welded on the sheet metal parts. Then the drive mechanism 2 stops working. Then, the adjustment mechanism 3 is activated, the rotation source 31 is started, the rotation source 31 drives the first rotating column 32 to rotate, the first rotating column 32 drives the connecting column 33 to rotate, the connecting column 33 drives the second rotating column 34 to rotate. When the connecting column 33 rotates, it can slide up and down in the straight groove 35, thereby driving the positioning frame 13 to move in the horizontal direction, realizing the reciprocating movement of the positioning frame 13 along the width direction of the frame 1. The positioning frame 13 drives the grinding plate to reciprocate, and performs grinding operations on the welding position of the sheet metal parts. Furthermore, by activating the first linear driver 21, the support frame 22 is driven to descend, the support frame 22 drives the positioning frame 13 to descend, and the grinding plate can be driven to descend slightly to achieve precise grinding of the sheet metal parts. After the sheet metal parts are polished, the second linear drive 121 is started. When the drive shafts of the two second linear drives 121 retract, they can drive the two slides 12 to slide along the length of the frame 1. At the same time, the two slides 12 slide in a direction away from each other. The slides 12 drive the clamping frame 15 and the two sheet metal parts to slide in a direction away from each other. Then the drive mechanism 2 works, starting the first linear drive 21. The first linear drive 21 can drive the support frame 22 to descend, and the support frame 22 drives the positioning frame 13 to descend. When the positioning frame 13 descends below the slide 12, the first linear drive 21 is turned off. Next, the second linear drive 121 is activated. When the drive shafts of the two second linear drives 121 extend, they can drive the two slides 12 to slide along the length of the frame 1. At the same time, the two slides 12 slide towards each other, driving the clamping frame 15 and the two sheet metal parts to slide. When the two slides 12 abut together, the second linear drive 121 is turned off. At this time, the two sheet metal parts abut together, and the slides 12 abut against the inclined surface of the positioning frame 13. Then, the welding robot 11 works to weld the two sheet metal parts. After the sheet metal parts are welded, the drive screw 16 is rotated. When the drive screw 16 rotates, it drives the moving frame 17 to move upward. The moving frame 17 drives the clamping wheel 18 to move upward. When the clamping wheel 18 moves upward, it no longer clamps the sheet metal parts. Then, the rotating screw 151 is rotated. When the rotating screw 151 rotates, it can drive the two clamping frames 15 in the same group to move away from each other. Then, the welded sheet metal parts are removed from the slide 12, thus completing the welding operation of the sheet metal parts.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sheet metal welding apparatus, comprising a frame (1) and a welding robot (11) disposed on one side of the frame (1) and used for welding sheet metal parts, characterized in that, Two slide blocks (12) are slidably arranged along the length of the frame (1). The upper surface of the slide blocks (12) is in contact with the end of the sheet metal part. A positioning frame (13) is provided on the frame (1) between the two slide blocks (12). Positioning slots (14) for the sheet metal part to extend into are provided on both sides of the positioning frame (13). A grinding plate is provided on the positioning frame (13) at the positioning slots (14). A drive mechanism is provided on the frame (1) for moving the positioning frame (13) in the vertical direction. 2) The frame (1) is provided with an adjustment mechanism (3) for driving the positioning frame (13) to move back and forth along the width direction of the frame (1). After the ends of the two sheet metal parts abut against the upper surface of the slide (12), the drive mechanism (2) drives the positioning frame (13) to descend, so that the grinding plate at the positioning groove (14) abuts against the welding position on the sheet metal parts. Then the adjustment mechanism (3) drives the positioning frame (13) to move back and forth along the width direction of the frame (1) to grind the welding position on the sheet metal parts.

2. The sheet metal welding device according to claim 1, characterized in that, The drive mechanism (2) includes a first linear driver (21) fixedly installed at the bottom of the frame (1), the drive shaft of the first linear driver (21) is fixedly connected to a support frame (22), and the positioning frame (13) is disposed inside the support frame (22).

3. The sheet metal welding device according to claim 2, characterized in that, The adjustment mechanism (3) includes a rotation source (31) fixedly installed on the side wall of the support frame (22) and an adjustment component for driving the positioning frame (13) to reciprocate along the width direction of the frame (1).

4. The sheet metal welding device according to claim 3, characterized in that, The adjustment assembly includes a first rotating column (32) disposed on the drive shaft of the rotation source (31), a connecting column (33) fixedly connected to one side of the first rotating column (32), and a second rotating column (34) fixedly connected to one end of the connecting column (33) away from the first rotating column (32). The positioning frame (13) is provided with a straight groove (35) through which the connecting column (33) passes. When the first rotating column (32), the connecting column (33) and the second rotating column (34) rotate, the connecting column (33) slides in the straight groove (35) and can drive the positioning frame (13) to move in the horizontal direction.

5. The sheet metal welding device according to claim 1, characterized in that, The bottom wall of the positioning groove (14) is provided with a material drop trough (141) for the grinding waste to fall.

6. The sheet metal welding device according to claim 1, characterized in that, The top of both sides of the frame (1) is provided with a second linear driver (121), and the slide (12) is fixedly connected to the drive shaft of the second linear driver (121).

7. The sheet metal welding device according to claim 1, characterized in that, The slide (12) is provided with two clamping frames (15), and the clamping frames (15) are provided with clamping components that cooperate with the upper surface of the slide (12) to clamp and release sheet metal parts.

8. A sheet metal welding device according to claim 7, characterized in that, The clamping assembly includes a drive screw (16) rotatably fitted on a clamping frame (15), the drive screw (16) being threadedly connected to a movable frame (17), and the bottom of the movable frame (17) being rotatably connected to a clamping wheel (18) for clamping and releasing the sheet metal part.

9. A sheet metal welding device according to claim 8, characterized in that, The slide (12) is rotatably connected to a horizontally arranged rotating screw (151), and the clamping frame (15) is threadedly connected to the rotating screw (151). When the rotating screw (151) rotates, it can make a group of clamping frames (15) move closer to each other or further away from each other.

10. A sheet metal welding device according to claim 1, characterized in that, The top two sides of the positioning frame (13) are both set as inclined surfaces. When welding is performed on the sheet metal part at the welding position, the two slides (12) come close to each other and abut against the inclined surfaces of the positioning frame (13).

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