Welding tool for metal cabinet machining

Abstract

The invention discloses a welding tool for metal cabinet machining, and particularly relates to the technical field of cabinet welding, the welding tool is provided with a loading butt joint unit and a telescopic clamping unit, a back plate and a stand column which are horizontally conveyed are sequentially converted into a vertical state, a mounting plate slides in the vertical direction through a first guide rail, and multi-point butt joint of components is completed; the two clamping plates are separated from the stand column, so that the two clamping plates do not interfere with the stand column in motion, after the two clamping plates are tightly attached, the two clamping plates are driven by corresponding sliding sleeves to slide, at the moment, contact parts make sliding contact with the upward moving platform, the two clamping plates slide towards the outer side, and clamping openings are attached to the outer wall of the stand column under contact pushing. A clamping state for providing auxiliary support from the side direction is formed, so that the stand column deviation or structure warping in the welding process is prevented, the stand column and other vertical pieces are prevented from deviating or deforming due to welding heat input, the welding seam quality and the overall structure stability are improved, multi-component sequential positioning and welding are completed, manual auxiliary operation is replaced, and the machining efficiency of the metal cabinet is improved.

Description

Technical Field

[0001] This invention relates to the field of cabinet welding technology, specifically to a welding fixture for metal cabinet processing. Background Technology

[0002] Metal cabinets are widely used in kitchens, laboratories, offices, and other places due to their advantages such as corrosion resistance, fire resistance, moisture resistance, and long service life. Common metal cabinets are made from cold-rolled steel or stainless steel sheets through processes such as shearing, bending, and welding. Welding, as a key step in cabinet assembly, directly affects the overall precision, appearance quality, and structural strength of the product. Metal cabinet welding typically employs manual positioning. To improve welding efficiency and consistency, specialized welding fixtures are used to assemble and position the cabinet panels, ensuring that multiple panels maintain a fixed angle and spacing during the welding process.

[0003] A search revealed that utility model patent CN221984209U discloses a laser welding fixture that assembles and clamps the square tubes of the frame, which are then welded by workers. This avoids changes in the position of the square tubes during the welding process, ensuring the quality of the frame welding. After welding one side, the frame can be easily flipped over for welding the other side.

[0004] In existing technologies, welding fixtures rely on manual positioning or unidirectional limiting devices, which leads to initial alignment errors in components such as reinforcing ribs, back panels, and uprights during assembly. This results in inaccurate fit, difficulty in ensuring the consistency of welded joints, and a tendency for severe post-weld deformation, affecting the appearance and assembly accuracy of the cabinet. Summary of the Invention

[0005] The purpose of this invention is to provide a welding fixture for metal cabinet processing to solve the problems mentioned in the background art.

[0006] The main technical problem solved by this invention is:

[0007] The existing welding fixtures rely on manual positioning, which results in initial alignment errors and inaccurate fit during assembly, making it difficult to ensure the consistency of welded joints.

[0008] This invention can be achieved through the following technical solutions:

[0009] A welding fixture for processing metal cabinets includes a base plate. Positioning plates for limiting the position of metal square tubes are slidably provided on both sides of the top surface of the base plate. Two parallel conveyor belts are provided on one side of the base plate. Clamping units for positioning reinforcing ribs and metal square tubes are provided on the edges of the two positioning plates.

[0010] Each of the positioning plates has a vertical plate slidably mounted on its outer side, and the sliding direction of the vertical plate is perpendicular to the sliding direction of the positioning plate.

[0011] The inner wall of the upright plate is provided with a loading docking unit that sequentially clamps and corrects the back plate and the upright column. The loading docking unit includes an installation plate that moves in segments along the sliding direction of the positioning plate. A clamping cylinder two is rotatably installed on one side of the installation plate. A pressure welding unit is rotatably provided below the mounting seat of the clamping cylinder two.

[0012] The bottom of the upright plate is provided with a telescopic clamping unit for auxiliary fixing of the upright column;

[0013] The telescopic clamping unit includes two sliding sleeves located inside the upright plate and simultaneously close to or far from each other. The inner cavity of the sliding sleeve is provided with an automatically rebounding clamping plate through an elastic element. One end of the clamping plate slides away from the interior of the upright plate through a moving groove, and the inner wall end of the clamping plate is provided with a corresponding clamping slot that presses against the surface of the upright.

[0014] The other end of the clamping plate is provided with a contact part, and the inner cavity of the upright plate is fixedly provided with an upward moving platform that abuts and cooperates with the contact part. The end of the sliding sleeve facing the upward moving platform is open.

[0015] The width of the contact portion is the same as that of the upward moving platform.

[0016] A further technical improvement of the present invention is that the telescopic clamping unit also includes a transmission screw disposed inside the upright plate and driven by the two output ends of the dual-axis motor, wherein the transmission screw is threadedly connected to the sleeve block connected to the sliding sleeve.

[0017] A further technical improvement of the present invention is that the loading docking unit further includes a guide rail one disposed on the inner wall of the vertical plate, a moving block is installed on the sliding end of the guide rail one, an electric push rod is installed on the middle of the surface of the moving block, the pushing end of the electric push rod is fixed to the mounting plate, and a telescopic rod is installed on the outer side of the moving block, the telescopic end of the telescopic rod is fixed to the mounting plate.

[0018] A further technical improvement of the present invention is that: a sliding rail plate is installed on the surface of the clamping cylinder mounting base, and the balls at the end of the sliding rail plate are rolled in the annular groove on the surface of the mounting plate.

[0019] A further technical improvement of the present invention is that: the pressure welding unit includes a sleeve plate, the lower surface of the sleeve plate is provided with a second guide rail, and the bottom end of the sleeve plate is provided with a telescopic frame and a fixing part. The fixing part is provided with an air inlet for filling inert gas. A welding head is installed on the bottom surface of the slide on the second guide rail, and pressure beads are installed on both sides of the welding head.

[0020] A further technical improvement of the present invention is that: a connecting plate is movably provided on one side of the sleeve plate, a sliding rod is provided above the connecting plate to limit and slide with the sleeve plate, and a rotating disk driven by a rotary motor is connected to the ends of the sliding rod and the connecting plate.

[0021] A further technical improvement of the present invention is that: the surface of the upright plate is provided with two movable grooves, and the two movable grooves are provided with baffles that block the back plate and the end of the column in sequence. The surface of the baffle is provided with an outwardly protruding plate. The surface of the protruding plate is provided with a spring connected to the upright plate. An eccentric wheel sleeved on the drive shaft is installed on the outer surface of the upright plate. The eccentric wheel abuts against the roller installed on the end face of the baffle.

[0022] A further technical improvement of the present invention is that positioning pads for limiting the back plate and the upright are installed sequentially on the surfaces of the upper and lower conveyor belts.

[0023] A further technical improvement of the present invention is that: a support plate is fixedly provided on the upper surface of the positioning plate, a clamping cylinder is provided on one side of the support plate and slides horizontally on the positioning plate, an L-shaped support plate is installed on the side of the clamping cylinder, a roller is installed on the upper surface of the support plate, and a sliding plate is elastically connected to the end of the support plate, and an upper end plate that moves elastically in the vertical direction is located on the inner side of the sliding plate.

[0024] The end of the upper plate is inclined outward.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By setting up a loading docking unit and a telescopic clamping unit, the horizontally conveyed back panel and column are sequentially converted into a vertical state. The mounting plate slides vertically through the guide rail to complete the multi-point docking of components. There is a gap between the two clamping plates and the column, so there is no movement interference with them. After being tightly attached, the two clamping plates are driven by the corresponding sliding sleeve to slide. At this time, the contact part slides into contact with the upper platform, causing the two clamping plates to slide outward. Under the contact push, the clamp fits against the outer wall of the column, forming a clamping state that provides auxiliary support from the side to prevent the column from shifting or the structure from warping during welding. It also prevents vertical components such as columns from shifting or deforming due to welding heat input, improving the weld quality and overall structural stability. Through the coordinated actions of conveying, flipping, sliding, and clamping, the sequential positioning and welding of multiple components are completed, replacing manual auxiliary operation and significantly improving the processing and production efficiency of metal cabinets.

[0027] 2. By setting positioning pads and movable blocking baffles, the positioning pads guide the accurate trajectory, and the eccentric wheel pushes the roller of the baffle, causing the baffle to retract along the corresponding movable groove. The farthest distance of the eccentric wheel contacts the roller, at which point the baffle acts as a barrier against the back plate and the column. The closest distance of the eccentric wheel contacts the roller, and the baffle automatically rebounds under the action of the spring and reaches the end of the abutting baffle, forming a physical limit; this improves the pre-alignment accuracy and reduces assembly deviation.

[0028] 3. By setting up a pressure welding unit, the welding head moves in the sliding direction of the guide rail and the vertical plate, linearly covering multiple welding areas and long welds. Before welding, the pressure welding unit is positioned above the target connection area and the angle and trajectory of the welding head are adjusted. During welding, the telescopic frame and the fixed part together form a closed semi-enclosed cavity. At the same time, the pressure beads fit against both sides of the weld and synchronously press the welding area, which helps to concentrate welding energy, stabilize the molten pool, and reduce welding spatter or collapse. By filling the welding cavity with inert gas, local protective gas coverage of the welding area is achieved, preventing weld oxidation and improving the appearance and corrosion resistance of the weld. Attached Figure Description

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0031] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0032] Figure 3 This is a schematic diagram of the installation structure of the positioning plate and the support plate of the present invention;

[0033] Figure 4 This is a schematic diagram of the installation structure of the sleeve plate and the connecting plate of the present invention;

[0034] Figure 5 This is a schematic diagram of the internal installation structure of the clamping plate and the column of the present invention;

[0035] Figure 6 This is a three-dimensional installation structure diagram of the clamping plate and sliding sleeve of the present invention.

[0036] In the diagram: 1. Base plate; 2. Vertical plate; 3. Clamping plate; 4. Positioning plate; 5. Clamping cylinder one; 6. Support plate; 7. Conveyor belt; 8. Positioning pad; 9. Guide rail one; 10. Moving block; 11. Electric push rod; 12. Eccentric wheel; 13. Movable groove; 14. Baffle; 15. Protruding plate; 16. Spring one; 17. Clamping cylinder two; 18. Support plate; 19. Idler roller; 20. Upper end plate; 21. Sliding plate; 23. Mounting plate; 24. Sliding rail plate; 25. Telescopic rod; 26. Slide rod; 27. Sleeve plate; 28. Connecting plate; 29. ​​Guide rail two; 30. Pressure ball; 31. Welding head; 32. Telescopic frame sleeve; 33. Transmission screw; 34. Sliding sleeve; 35. Upper moving platform; 36. Contact part. Detailed Implementation

[0037] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0038] Please see Figures 1-6 As shown, the present invention provides a welding fixture for processing metal cabinets, including a base plate 1. Positioning plates 4 for limiting the metal square tube are slidably provided on both sides of the top surface of the base plate 1, and two parallel conveyor belts 7 are provided on one side of the base plate 1. Clamping units for positioning the reinforcing rib plate and the metal square tube are provided on the edges of the two positioning plates 4.

[0039] Each positioning plate 4 has a vertical plate 2 slidably mounted on its outer side, and the sliding direction of the vertical plate 2 is perpendicular to the sliding direction of the positioning plate 4.

[0040] The inner wall of the upright plate 2 is provided with a loading docking unit that clamps and corrects the back plate and the column in sequence along the vertical direction. The loading docking unit includes an installation plate 23 that moves in segments along the sliding direction of the positioning plate 4. A clamping cylinder 17 is rotatably installed on one side of the installation plate 23. A pressure welding unit is rotatably provided below the mounting seat of the clamping cylinder 17.

[0041] The bottom of the upright plate 2 is equipped with a telescopic clamping unit for auxiliary fixing of the upright column;

[0042] The telescopic clamping unit includes two sliding sleeves 34 located inside the upright plate 2 and simultaneously close to or far from each other. The inner cavity of the sliding sleeve 34 is provided with an automatically rebounding clamping plate 3 through an elastic element. One end of the clamping plate 3 slides away from the interior of the upright plate 2 through a moving groove, and the inner wall end of the clamping plate 3 is provided with a corresponding clamping slot that presses against the surface of the upright.

[0043] The other end of the clamping plate 3 is provided with a contact part 36, and the inner cavity of the upright plate 2 is fixedly provided with an upward moving platform 35 that abuts and cooperates with the contact part 36. The end of the sliding sleeve 34 facing the upward moving platform 35 is open.

[0044] The width of the contact portion 36 is the same as that of the upward platform 35;

[0045] First, the reinforcing rib plate is positioned on the edge of the substrate 1 by an external mechanical claw and placed in the clamping unit set on the edge of the positioning plate 4 to achieve the initial positioning and clamping of the reinforcing rib plate. Then, the positioning plate 4 that fixes the metal square tube slides on the substrate 1 so that the metal square tube and the reinforcing rib plate are attached together, and the attachment connection is welded by the pressure welding unit.

[0046] Subsequently, the mechanical claws pick up the base plate and cover it on top of the metal square tube and reinforcing rib plate, providing a support platform for the precise positioning and pressure welding of subsequent components;

[0047] Next, the upper conveyor belt 7 transports the back plate to the height of the loading docking unit. The mounting plate 23 moves along the sliding direction parallel to the positioning plate 4, so that the clamping cylinder 17 is aligned with the edge of the back plate. The back plate passes through the opened clamping cylinder 17 and is then clamped and fixed by it. Then the clamping cylinder 17 rotates 90 degrees clockwise. At this time, the back plate changes from horizontal to vertical. Then, through the vertical sliding of the loading docking unit on the vertical plate 2, the back plate comes into contact with the reinforcing rib plate. Through the sliding vertical plate 2, multiple points are vertically arranged on the back plate. Then the pressure welding unit rotates so that its welding point faces the connection between the back plate and the reinforcing rib plate.

[0048] After welding, the mounting plate 23 is restored to the same height as the conveyor belt 7 below. The clamping cylinder 2 17 continues to move along the sliding direction to the column conveying position, so that the clamping cylinder 2 17 reaches the position of the column. The column passes through the opened clamping cylinder 2 17 and is clamped and fixed by it. Then, it is rotated 90 degrees clockwise to change its installation angle. Then, through the vertical sliding of the loading docking unit on the upright plate 2, the column and the metal square tube are in close contact with the welded back plate at the same time, which helps to accurately install the angle and complete the overall positioning of the three.

[0049] When the column is rotated, there is a gap between the two clamping plates 3 and the column, so there is no movement interference with it. After they are tightly attached, the two clamping plates 3 are driven to slide by the corresponding sliding sleeves 34. At this time, the contact part 36 slides into contact with the upper moving platform 35, causing the two clamping plates 3 to slide outward. Under the contact push, the jaws fit against the outer wall of the column, forming a clamping state that provides auxiliary support from the side, so as to prevent the column from shifting or the structure from warping during the welding process, and to prevent vertical parts such as the column from shifting or deforming due to welding heat input, thereby improving the weld quality and overall structural stability.

[0050] After welding is completed, all clamping structures are reset, and the loading docking unit, mounting plate 23, clamping plate 3, etc. are restored to their initial positions, and the next round of cabinet component assembly and welding process begins;

[0051] The entire system coordinates the sequential positioning and welding of multiple components through actions such as conveying, flipping, sliding, and clamping, replacing manual auxiliary operations and significantly improving the production efficiency of metal cabinet processing.

[0052] See Figure 5 As shown, the telescopic clamping unit also includes a transmission screw 33 located inside the vertical plate 2 and driven by the two output ends of the dual-axis motor. The transmission screw 33 is threadedly connected to the sleeve block of the sliding sleeve 34.

[0053] The dual-axis motor drives the corresponding transmission screw 33 to rotate. At this time, the sliding sleeve 34 drives the clamping plate 3 to move together. The contact part 36 at the end of the clamping plate 3 abuts against the upper moving platform 35, causing the clamping plate 3 to move outward and slide.

[0054] See Figure 2 and Figure 4 As shown, the loading docking unit also includes a guide rail 9 on the inner wall of the upright plate 2. A moving block 10 is installed on the sliding end of the guide rail 9. An electric push rod 11 is installed in the middle of the surface of the moving block 10. The pushing end of the electric push rod 11 is fixed to the mounting plate 23. A telescopic rod 25 is installed on the outer side of the moving block 10. The telescopic end of the telescopic rod 25 is fixed to the mounting plate 23. This provides auxiliary guidance and flexible vibration absorption support to avoid structural vibration and error accumulation. The electric push rod 11 drives the mounting plate 23 to move back and forth along the sliding direction of the positioning plate 4. The displacement is precisely controlled by the program so that the mounting plate 23 can reach the accurate positioning position when transporting components such as back plates and columns.

[0055] A sliding rail plate 24 is mounted on the surface of the mounting base of the clamping cylinder 217, and the balls at the end of the sliding rail plate 24 are rolled in the annular groove on the surface of the mounting plate 23.

[0056] This allows the clamping cylinder 17 to maintain stable guidance while moving with the mounting plate 23, reducing running resistance and allowing for slight self-adjustment of the angle, thus improving clamping accuracy.

[0057] The clamping cylinder 17 moves along with the mounting plate 23 to the rotation area and completes a 90° rotation, turning the component from horizontal to vertical. The mounting plate 23 then slides vertically along the guide rail 9 on the vertical plate 2, so that the component and the target mating surface (such as a reinforcing rib or metal square tube) are spatially fitted. The pressure welding unit then turns to the fitting area to perform welding.

[0058] See Figure 4 As shown, the pressure welding unit includes a sleeve plate 27. The lower surface of the sleeve plate 27 is provided with a guide rail 29. The bottom end of the sleeve plate 27 is provided with a telescopic frame sleeve 32 and a fixing part. The fixing part is provided with an air inlet for filling inert gas. The bottom surface of the slide on the guide rail 29 is equipped with a welding head 31. Pressure beads 30 are installed on both sides of the welding head 31.

[0059] The welding head 31 moves in the sliding direction of the guide rail 29 and the vertical plate 2, linearly covering multiple welding areas and long welds. Before welding, the pressure welding unit is positioned above the target connection area and the angle and trajectory of the welding head 31 are adjusted. During welding, the telescopic frame sleeve 32 and the fixed part together form a closed semi-enclosed cavity. By filling the welding cavity with inert gas (argon), the local protective gas coverage of the welding area is achieved, preventing weld oxidation and improving the appearance and corrosion resistance of the weld.

[0060] During the welding process, the pressure beads 30 fit against both sides of the weld seam and simultaneously press the welding area, which helps to concentrate welding energy, stabilize the molten pool formation, and reduce welding spatter or collapse.

[0061] A connecting plate 28 is movably provided on one side of the sleeve plate 27. A slide rod 26 is provided above the connecting plate 28 and slides with the sleeve plate 27. A rotating disk driven by a rotary motor is connected to the ends of the slide rod 26 and the connecting plate 28.

[0062] The connecting plate 28 and the sleeve plate 27 are designed to be movable, which can be adapted to the use of clamping cylinder 2 17 in multiple scenarios. The spatial angle of the welding head 31 can be adjusted by rotating the rotating disk.

[0063] See Figure 2 As shown, the surface of the upright plate 2 is provided with two movable grooves 13, one above the other. The two movable grooves 13 are provided with baffles 14 that block the back plate and the end of the column. The surface of the baffles 14 is provided with outwardly protruding convex plates 15. The surface of the convex plates 15 is provided with springs 16 connected to the upright plate 2. An eccentric wheel 12 sleeved on the drive shaft is installed on the outer surface of the upright plate 2. The eccentric wheel 12 abuts against the roller installed on the end face of the baffles 14.

[0064] The eccentric wheel 12 is driven to rotate by an external drive shaft. Its circumferential surface periodically pushes the roller of the baffle 14, causing the baffle 14 to retract along the corresponding movable groove 13, thereby realizing the automatic blocking and repositioning of the structural components. When the farthest distance of the eccentric wheel 12 contacts the roller, the baffle 14 blocks the back plate and the column. When the closest distance of the eccentric wheel 12 contacts the roller, the baffle 14 automatically rebounds under the action of the spring 16, releasing the restriction.

[0065] See Figure 1 As shown, positioning pads 8 for limiting the back plate and the column are installed sequentially on the surfaces of the upper and lower conveyor belts 7.

[0066] The positioning pad 8 guides the component to the accurate trajectory, and at the same time, the end of the abutment baffle 14 forms a physical limit; this improves the pre-alignment accuracy and reduces assembly deviation.

[0067] See Figure 3 As shown, a support plate 18 is fixedly provided on the upper surface of the positioning plate 4. A clamping cylinder 5 that slides horizontally on the positioning plate 4 is provided on one side of the support plate 18. An L-shaped support plate 6 is installed on the side of the clamping cylinder 5. A roller 19 is installed on the upper surface of the support plate 6 to provide rolling guidance and buffer support when the component enters the clamping area. A sliding plate 21 is elastically connected to the end of the support plate 6. An upper end plate 20 that moves elastically in the vertical direction is located inside the sliding plate 21.

[0068] The end of the upper end plate 20 is inclined outward;

[0069] When components are slightly misaligned or inconsistent in height during assembly, docking, or pressing, the inclined section can guide them to smoothly slide into the clamping area, preventing components from getting stuck or scratched and deformed.

[0070] In use, this invention uses a loading docking unit and a telescopic clamping unit to sequentially convert the horizontally conveyed back plate and column into a vertical state. The mounting plate 23 slides vertically via the guide rail 9 to complete multi-point docking of components. There is a gap between the two clamping plates 3 and the column, so there is no movement interference. After being tightly attached, the two clamping plates 3 are driven to slide by the corresponding sliding sleeves 34. At this time, the contact part 36 slides into contact with the upper moving platform 35, causing the two clamping plates 3 to slide outward. Under the contact push, the clamp fits against the outer wall of the column, forming a clamping state that provides auxiliary support from the side to prevent the column from shifting or the structure from warping during welding. It also prevents vertical components such as columns from shifting or deforming due to welding heat input, improving weld quality and overall structural stability. Through the coordinated actions of conveying, flipping, sliding, and clamping, the sequential positioning and welding of multiple components are completed, replacing manual auxiliary operations and significantly improving the processing and production efficiency of metal cabinets.

[0071] By setting a positioning pad 8 and a movable blocking baffle 14, the positioning pad 8 guides the accurate trajectory, and the eccentric wheel 12 pushes the roller of the baffle 14, causing the baffle 14 to retract along the corresponding movable groove 13. The farthest distance of the eccentric wheel 12 contacts the roller, at which point the baffle 14 acts as a barrier between the back plate and the column. The closest distance of the eccentric wheel 12 contacts the roller, and the baffle 14 automatically rebounds under the action of the spring 16, reaching the end of the baffle 14 to form a physical limit; this improves the pre-alignment accuracy and reduces assembly deviation.

[0072] By setting up a pressure welding unit, the welding head 31 moves in the sliding direction of the guide rail 29 and the vertical plate 2, linearly covering multiple welding areas and long welds. Before welding, the pressure welding unit is positioned above the target connection area and the angle and trajectory of the welding head 31 are adjusted. During welding, the telescopic frame sleeve 32 and the fixed part together form a closed semi-enclosed cavity. At the same time, the pressure beads 30 fit against both sides of the weld and synchronously press the welding area, which helps to concentrate welding energy, stabilize the molten pool formation, and reduce welding spatter or collapse. By filling the welding cavity with inert gas, local protective gas coverage of the welding area is achieved, preventing weld oxidation and improving the appearance and corrosion resistance of the weld.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A welding fixture for processing metal cabinets, comprising a base plate (1), characterized in that: The two sides of the top surface of the substrate (1) are slidably provided with positioning plates (4) for limiting the metal square tube, and two parallel conveyor belts (7) are provided on one side of the substrate (1). The edges of the two positioning plates (4) are provided with clamping units for positioning the reinforcing ribs and the metal square tube. Each of the positioning plates (4) has a vertical plate (2) slidably provided on its outer side, and the sliding direction of the vertical plate (2) is perpendicular to the sliding direction of the positioning plate (4); The inner wall of the upright plate (2) is provided with a loading docking unit that clamps and corrects the back plate and the column in sequence along the vertical direction. The loading docking unit includes an installation plate (23) that moves in segments along the sliding direction of the positioning plate (4). A clamping cylinder two (17) is rotatably installed on one side of the installation plate (23). A pressure welding unit is rotatably provided below the mounting seat of the clamping cylinder two (17). The bottom of the upright plate (2) is provided with a telescopic clamping unit for auxiliary fixing of the upright column; The telescopic clamping unit includes two sliding sleeves (34) located inside the upright plate (2) and simultaneously close to or far from each other. The inner cavity of the sliding sleeve (34) is provided with an automatically rebounding clamping plate (3) through an elastic element. One end of the clamping plate (3) slides away from the interior of the upright plate (2) through a moving groove, and the inner wall end of the clamping plate (3) is provided with a corresponding clamping slot against the surface of the upright. The clamping plate (3) has a contact part (36) at the other end, and the inner cavity of the upright plate (2) is fixedly provided with an upward moving platform (35) that abuts against the contact part (36). The sliding sleeve (34) is open at one end facing the upward moving platform (35). The width of the contact portion (36) is the same as that of the upward platform (35).

2. The welding fixture for metal cabinet processing according to claim 1, characterized in that, The telescopic clamping unit also includes a transmission screw (33) located inside the vertical plate (2) and driven by the two output ends of a dual-axis motor. The transmission screw (33) is threadedly connected to the sleeve block of the sliding sleeve (34).

3. The welding fixture for metal cabinet processing according to claim 1, characterized in that, The loading docking unit also includes a guide rail (9) on the inner wall of the vertical plate (2). A moving block (10) is installed on the sliding end of the guide rail (9). An electric push rod (11) is installed in the middle of the surface of the moving block (10). The pushing end of the electric push rod (11) is fixed to the mounting plate (23). A telescopic rod (25) is installed on the outer side of the moving block (10). The telescopic end of the telescopic rod (25) is fixed to the mounting plate (23).

4. The welding fixture for metal cabinet processing according to claim 1, characterized in that, The surface of the clamping cylinder (17) mounting base is equipped with a sliding rail plate (24), and the ball bearings at the end of the sliding rail plate (24) are rolled in the annular groove on the surface of the mounting plate (23).

5. The welding fixture for metal cabinet processing according to claim 1, characterized in that, The pressure welding unit includes a sleeve plate (27), the lower surface of which is provided with a guide rail (29), and the bottom end of the sleeve plate (27) is provided with a telescopic frame sleeve (32) and a fixing part. The fixing part is provided with an air inlet for filling inert gas. The bottom surface of the slide on the guide rail (29) is equipped with a welding head (31), and pressure beads (30) are installed on both sides of the welding head (31).

6. The welding fixture for metal cabinet processing according to claim 5, characterized in that, A connecting plate (28) is movably provided on one side of the sleeve (27). A sliding rod (26) that slides and limits the sleeve (27) is provided above the connecting plate (28). A rotating disk driven by a rotary motor is connected to the ends of the sliding rod (26) and the connecting plate (28).

7. The welding fixture for metal cabinet processing according to claim 1, characterized in that, The surface of the upright plate (2) is provided with two movable grooves (13), one above the other. The two movable grooves (13) are provided with baffles (14) that block the back plate and the end of the column. The surface of the baffle (14) is provided with a protruding plate (15), and the surface of the protruding plate (15) is provided with a spring (16) connected to the upright plate (2). An eccentric wheel (12) sleeved on the drive shaft is installed on the outer surface of the upright plate (2). The eccentric wheel (12) abuts against the roller installed on the end face of the baffle (14).

8. The welding fixture for metal cabinet processing according to claim 1, characterized in that, Positioning pads (8) for limiting the back plate and the column are installed sequentially on the surfaces of the upper and lower conveyor belts (7).

9. The welding fixture for metal cabinet processing according to claim 1, characterized in that, The upper surface of the positioning plate (4) is fixedly provided with a support plate (18). One side of the support plate (18) is provided with a clamping cylinder (5) that slides horizontally on the positioning plate (4). The side of the clamping cylinder (5) is provided with an L-shaped support plate (6). The upper surface of the support plate (6) is provided with a roller (19). The end of the support plate (6) is elastically connected to a sliding plate (21). The inner side of the sliding plate (21) is elastically moved by an upper end plate (20) in the vertical direction. The end of the upper plate (20) is inclined outward.

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