A side plate welding device for a van body

Abstract

This invention discloses an automatically positioning side panel welding device for a cargo box, comprising a displacement frame. A side clamping mechanism is fixedly connected to the top of the displacement frame, and a straight-edge clamping mechanism is provided on one side of the side clamping mechanism, which is fixedly connected to the top of the displacement frame. This invention achieves this by setting a first sliding groove on the mounting plate, a first sliding plate on the outer wall of a first support frame, a first clamping head on the outer wall of the first sliding plate, a second sliding plate on the outer wall of a second support frame, and a second clamping head on the outer wall of the second sliding plate. This allows an adjustable screw to be adjusted according to the curved surface of the side panel workpiece. In this invention, when the side panel workpiece reaches the side panel welding device, the device can adapt to the curved surface of the cargo box side panel, effectively supporting the curved surface and preventing welding deformation.

Description

Technical Field

[0001] This invention relates to the field of cargo box processing technology, specifically to a cargo box side panel welding device that can automatically position itself. Background Technology

[0002] The housing is typically made of gray cast iron, which has excellent casting and vibration damping properties. For heavy-duty or impact-loaded reducers, such as those used in mid-section gantry milling machines, cast steel housings can also be used. For single-piece production reducers, welded steel plate housings can be used to simplify the process and reduce costs. To facilitate the installation and disassembly of shaft components, the housing is horizontally split along the axis. The upper cover and lower housing are bolted together. The connecting bolts for the bearing housings should be as close as possible to the bearing housing holes, and the bosses next to the bearing housings should have sufficient bearing surface to accommodate the connecting bolts and ensure sufficient wrench space for tightening them. To ensure sufficient rigidity of the housing, supporting ribs are added near the bearing holes. To ensure the stability of the reducer on the foundation and to minimize the machined area of ​​the housing base plane, the bottom of the housing is generally not a complete flat surface.

[0003] The processing equipment used for box body machining varies depending on the batch size. Single-piece and small-batch production is generally carried out on general-purpose machine tools; except for a few processes that require special fixtures to ensure quality (such as hole machining), special fixtures are generally not used. However, for large-volume box body machining, combination machine tools are widely used, with multi-station combination machine tools, special-purpose machine tools, and CNC machine tools used for the main holes. Special fixtures are also frequently used, which greatly improves production efficiency. First, the box cover and base are machined separately, mainly completing the machining of planes and fastening holes to prepare for box body assembly; then, the end faces of the bearing support holes and the bearing holes themselves are roughed and finished. During box body machining, side plates are welded, and the automatically positioned box body side plate welding device is a type of device used in box body machining.

[0004] Currently, when welding curved cargo box side panels, the workpiece needs to be automatically fed into the side panel welding device via loading and unloading equipment. At this time, the workpiece will reach the side clamping mechanism and the straight edge clamping mechanism, and then the workpiece will be fixed in position for welding. In actual use, when the workpiece reaches the side panel welding device, because the cargo box side panel is curved, the curved surface of the cargo box side panel is not effectively supported, which will cause welding deformation of the curved surface of the cargo box side panel. Summary of the Invention

[0005] The purpose of this invention is to provide an automatically positioned welding device for the side panels of a vehicle body, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic positioning welding device for side panels of a vehicle body, including a displacement frame;

[0008] The main positioner is located on one side of the outer wall of the positioner frame, and the main positioner is connected to the positioner frame by bolts;

[0009] The slave positioner is located on the other side of the outer wall of the positioner frame, and the slave positioner is connected to the positioner frame by bolts;

[0010] A side pressing mechanism is fixedly connected to the top of the displacement frame. A straight edge pressing mechanism is provided on one side of the side pressing mechanism. The straight edge pressing mechanism is fixedly connected to the top of the displacement frame. A tensioning mechanism is provided on the side of the side pressing mechanism away from the straight edge pressing mechanism. The tensioning mechanism is fixedly connected to the top of the displacement frame.

[0011] The tensioning mechanism consists of a mounting plate and a mounting bracket. The mounting plate is fixedly connected to the top of the displacement frame. A first sliding groove is provided on the outer wall of the mounting plate. The mounting bracket is fixedly connected to the mounting plate. A tensioning slider is slidably connected inside the first sliding groove. A first hydraulic cylinder is fixedly connected to the top of the mounting plate. The output end of the first hydraulic cylinder is fixedly connected to the tensioning slider. A support plate is fixedly connected to the outer wall of the mounting bracket. An adjustable screw is fixedly connected to the outer wall of the support plate.

[0012] As a further improvement of the present invention, the side pressing mechanism is composed of a first support frame and a second oil cylinder. The bottom end of the first support frame is fixedly connected to the displacement frame, and a second sliding groove is provided on the top of the first support frame. A first sliding plate is slidably connected inside the second sliding groove. The addition of the second sliding groove restricts the movement trajectory of the first sliding plate.

[0013] As a further improvement of the present invention, the first slide plate is fixedly connected to the cylinder body of the second oil cylinder, and the piston rod of the second oil cylinder passes through the outer wall of the first slide plate. The addition of the second oil cylinder makes the position of the first pressing head adjustable.

[0014] As a further improvement of the present invention, the output shaft of the second hydraulic cylinder is slidably connected to the first slide plate, the top of the first slide plate is fixedly connected to a first adjustable support rod, the top of the first slide plate is hinged to a first pressing head, the first pressing head is hinged to the output end of the second hydraulic cylinder, and the addition of the first pressing head fixes the position of the side plate workpiece.

[0015] As a further improvement of the present invention, the straight edge pressing mechanism is composed of a second support frame and a third oil cylinder. The bottom end of the second support frame is fixedly connected to the displacement frame, and a third sliding groove is provided on the top of the second support frame. A second sliding plate is slidably connected inside the third sliding groove. The addition of the second support frame increases the stability of the side plate workpiece.

[0016] As a further improvement of the present invention, the second slide plate is fixedly connected to the cylinder body of the third cylinder, the piston rod of the third cylinder passes through the outer wall of the second slide plate, and the output shaft of the third cylinder is slidably connected to the second slide plate. The addition of the second slide plate restricts the position of the third cylinder.

[0017] As a further improvement of the present invention, a second adjustable support rod is fixedly connected to the top of the second slide plate, and a second pressing head is hinged to the top of the second slide plate. The second pressing head is hinged to the output end of the third hydraulic cylinder. The addition of the second adjustable support rod can effectively fix the position of the side plate workpiece.

[0018] As a further improvement of the present invention, an adjusting bolt is fixedly connected to the top of the displacement frame. The number of adjusting bolts is set to multiple, and the multiple adjusting bolts are evenly distributed on the top of the displacement frame. The addition of the adjusting bolts enables the device to adaptively adjust the side plate workpiece.

[0019] As a further improvement of the present invention, the number of the side clamping mechanisms is set to multiple, and the multiple side clamping mechanisms are evenly distributed on the top of the displacement frame. The addition of the side clamping mechanisms fixes the position of the side plate workpiece.

[0020] As a further improvement of the present invention, the cross-sectional shape of the support plate is set to an arc shape, and the cross-sectional shape of the tensioning slider is set to a right trapezoid. The addition of the support plate allows the adjusting bolt to fit against the outer wall of the side plate workpiece.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The automatically positioning side panel welding device of the present invention can effectively support the arc-shaped surface of the side panel workpiece. This is achieved by setting a first sliding groove on the mounting plate, setting a tensioning slider inside the first sliding groove, setting a first hydraulic cylinder on the outer wall of the mounting plate, setting a mounting frame on the outer wall of the mounting plate, setting a support plate on the outer wall of the mounting frame, setting an adjustable screw on the outer wall of the support plate, setting a first sliding plate on the outer wall of the first support frame, setting a first pressing head on the outer wall of the first sliding plate, setting a second hydraulic cylinder on the outer wall of the first sliding plate, and setting a first adjustable screw on the outer wall of the first sliding plate. The invention includes an adjustable support rod, a second sliding groove on the outer wall of the first support frame, a second sliding plate on the outer wall of the second support frame, a second clamping head on the outer wall of the second sliding plate, a third hydraulic cylinder on the outer wall of the second sliding plate, a second adjustable support rod on the outer wall of the second sliding plate, and a third sliding groove on the outer wall of the second support frame. This allows the adjustable screw to be adjusted according to the arc-shaped surface of the side panel workpiece. In this invention, when the side panel workpiece reaches the side panel welding device, the device can adapt to the arc-shaped side panel of the cargo box, effectively supporting the arc-shaped surface of the cargo box side panel and preventing welding deformation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the displacement frame of the present invention.

[0025] Figure 3 For the present invention Figure 1 Enlarged view of the structure at point A.

[0026] Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B.

[0027] Figure 5 For the present invention Figure 2 Enlarged view of the structure at point C.

[0028] Figure 6 For the present invention Figure 2 Enlarged view of the structure at point D.

[0029] Figure 7 This is a schematic diagram of the overall mechanism of the adjusting bolt of the present invention.

[0030] In the diagram: 1. Positioning frame; 2. Main positioner; 3. Slave positioner; 4. Side clamping mechanism; 5. Straight edge clamping mechanism; 6. Tensioning mechanism; 7. Mounting plate; 8. Mounting bracket; 9. First slide groove; 10. Tensioning slider; 11. First hydraulic cylinder; 12. Support plate; 13. Adjustable screw; 14. First support frame; 15. Second hydraulic cylinder; 16. Second slide groove; 17. First sliding plate; 18. First adjustable support rod; 19. First clamping head; 20. Second support frame; 21. Third hydraulic cylinder; 22. Third slide groove; 23. Second sliding plate; 24. Second adjustable support rod; 25. Second clamping head; 26. Adjusting bolt; 27. First limiting plate; 28. Sliding plate; 29. ​​Fixing plate. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0032] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, steps, etc., can be employed. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0033] Please see Figures 1-4 The present invention provides an automatically positioned welding device for the side panels of a cargo box, the technical solution of which is as follows:

[0034] An automatic positioning side panel welding device for a vehicle body includes a positioning frame 1, a main positioning machine 2, and a slave positioning machine 3. The main positioning machine 2 is located on one side of the outer wall of the positioning frame 1 and is detachably connected to the positioning frame 1 by bolts. The slave positioning machine 3 is located on the other side of the outer wall of the positioning frame 1 and is detachably connected to the positioning frame 1 by bolts. In this invention, the main positioning machine 2 and the slave positioning machine 3 are located at opposite ends of the positioning frame 1. In this invention, the direction in which the main positioning machine 2 is positioned is defined as forward, and the direction in which the slave positioning machine 3 is positioned is defined as backward. In this invention, the main positioning machine 2 and the slave positioning machine 3 support the positioning frame 1 from both ends. Therefore, by moving the main positioning machine 2 and the slave positioning machine 3, the entire device can be moved. This device can be fixed to the ground by the main positioning machine 2 and the slave positioning machine 3 to ensure that the overall position of the device remains unchanged during use, thereby improving the welding accuracy. For example, in the use state, the main positioning machine 2 and the slave positioning machine 3 can be fixed to the ground by expansion bolts.

[0035] In this invention, a side clamping mechanism 4 is fixedly connected to the top of the displacement frame 1. A straight edge clamping mechanism 5 is provided on one side of the side clamping mechanism 4, and the straight edge clamping mechanism 5 is fixedly connected to the top of the displacement frame 1. A tensioning mechanism 6 is provided on the side of the side clamping mechanism 4 away from the straight edge clamping mechanism 5, and the tensioning mechanism 6 is fixedly connected to the top of the displacement frame 1. In this invention, side clamping mechanisms 4 are fixedly provided at both the front and rear ends of the displacement frame 1, and two side clamping mechanisms 4 are provided at each of the front and rear ends of the displacement frame 1. These are used to clamp and fix the side plate workpiece to be welded from both the front and rear ends during use. In this invention, the straight edge clamping mechanism 5 is installed on the right side of the top of the displacement frame 1, and there are multiple straight edge clamping mechanisms 5, such as... Figure 1 and Figure 2 As shown, the optimal configuration of this invention includes four straight-edge clamping mechanisms 5, which are equally spaced. The number of straight-edge clamping mechanisms 5 can be appropriately selected according to actual needs. In use, the straight-edge clamping mechanisms 5 clamp and fix the straight edges of the side plate workpiece to be welded from the right side. The tensioning mechanism 6 in this invention is installed on the left side of the top of the displacement frame 1, and there are multiple such mechanisms. Figure 1 and Figure 2 As shown, the present invention preferably sets the number of tensioning mechanisms 6 to be the same as the number of straight-edge pressing mechanisms 5, and each tensioning mechanism 6 corresponds to one of the straight-edge pressing mechanisms 5.

[0036] like Figure 6As shown, the tensioning mechanism 6 in this invention consists of a mounting plate 7 and a mounting bracket 8. The mounting plate 7 is fixedly connected to the top of the displacement frame 1. In the most optimal embodiment, the mounting plate 7 is detachably mounted on the top of the displacement frame 1 using bolts that pass through the mounting plate 7 and are threaded into the displacement frame 1. In this invention, the length direction of the mounting plate 7 is the same as the left-right direction. A first sliding groove 9 is provided on the outer wall of the mounting plate 7. In the most optimal embodiment, two first limiting plates 27 are detachably mounted on the left end of the mounting plate 7 using bolts. The two first limiting plates 27 are parallel and their length direction is the same as the length direction of the mounting plate 7. In this invention, a first sliding groove 9 is provided at the bottom of the side of the two first limiting plates 27 facing each other along the left-right direction. The first sliding groove 9 passes through both ends of the first limiting plates 27. In this invention, the mounting bracket 8 is fixedly connected to the right end of the mounting plate 7. A tensioning slider 10 is slidably connected inside the first sliding groove 9. The tensioning slider 10 includes a sliding plate 28 and a fixed plate 29. The sliding plate 28 is horizontally arranged, and its front and rear ends are respectively located in the first sliding groove 9 on the two first limiting plates 27, and can slide in the left and right direction in the first sliding groove 9. The fixed plate 29 is vertically arranged, and its bottom end is welded and fixed to the right end of the sliding plate 28. In this invention, a reinforcing plate is welded and fixed between the sliding plate 28 and the fixed plate 29 to increase the connection strength between the sliding plate 28 and the fixed plate 29. The reinforcing plate is located on the left side of the fixed plate 29. The cross-sectional shape of the reinforcing plate in this invention is set as a right trapezoid.In this invention, a first hydraulic cylinder 11 is fixedly connected to the top right portion of the mounting plate 7. The cylinder body of the first hydraulic cylinder 11 is detachably installed to the mounting plate 7 using bolts. The output end of the first hydraulic cylinder 11 extends horizontally to the left and is fixedly connected to the fixing plate 29 of the tensioning slider 10. The first hydraulic cylinder 11 passes through the bottom of the mounting frame 8. A support plate 12 is fixedly connected to the outer wall of the mounting frame 8, and an adjustable screw 13 is fixedly connected to the outer wall of the support plate 12. The mounting frame 8 in this invention includes two columns A, two columns B, two connecting rods A and two connecting rods B. The two columns A are of equal height, the two columns B are of equal height, and the height of column A is greater than the height of column B. The two columns A are located to the right of the two columns B, and the bottom ends of the columns A and B are welded and fixed to the mounting plate 7. The bottom ends of the two columns B are welded and fixed to the mounting plate 7. The left and right sides of the two connecting rods A are... The ends of the two connecting rods B are welded and fixed to the columns B and A respectively. The front and rear ends of the two connecting rods B are welded and fixed to the left and right ends of the two connecting rods A respectively. Both connecting rods A and B are horizontal. The support plate 12 in this invention includes two parallel support plate units and multiple connecting plate units. The right side of the support plate unit is welded and fixed to the column A, and the bottom of the support plate unit is welded and fixed to the connecting rod A. The front and rear ends of one connecting plate unit are welded and fixed to the two columns B respectively, and the front and rear ends of the remaining connecting plate units are welded and fixed to the two support plate units respectively. The adjustable screw 13 in this invention is set on the connecting plate unit. The cross-sectional shape of the support plate 12 in this invention is preferably set to an arc shape so as to better fit with the side plate workpiece during use. When the support plate 12 moves, the support plate 12 will drive the adjusting bolt 26 installed on it to move synchronously.

[0037] like Figure 5 As shown, the side clamping mechanism 4 of the present invention includes a first support frame 14 and a second oil cylinder 15. The bottom end of the first support frame 14 is fixedly connected to the displacement frame 1. A second sliding groove 16 is provided on the top of the first support frame 14. The present invention uses bolts to detachably install two second limiting plates on the top of the first support frame 14. Both second limiting plates are arranged in the front-back direction. A second sliding groove 16 is provided at the bottom of the side of the two second limiting plates that are close to each other. The present invention has a first sliding plate 17 slidably connected inside the second sliding groove 16. The left and right ends of the first sliding plate 17 are respectively located in the two second sliding grooves 16. When the first sliding plate 17 moves, the left and right ends of the first sliding plate 17 slide within the two second sliding grooves 16 respectively.

[0038] In this invention, the first sliding plate 17 is fixedly connected to the second hydraulic cylinder 15. The cylinder body of the second hydraulic cylinder 15 is detachably bolted to the bottom of the first sliding plate 17. The output end of the second hydraulic cylinder 15 passes through the outer wall of the first sliding plate 17, meaning the piston rod of the second hydraulic cylinder 15 passes upward through the first sliding plate 17. Since the second hydraulic cylinder 15 is mounted on the first sliding plate 17, it moves synchronously when the first sliding plate 17 moves. The output shaft of the second hydraulic cylinder 15 is slidably connected to the first sliding plate 17, meaning the piston rod of the second hydraulic cylinder 15 extends and retracts vertically. Optimally, the first sliding plate 17 has a first through hole extending vertically through it, with the diameter of the first through hole slightly larger than the diameter of the piston rod of the second hydraulic cylinder 15. The piston rod of the second hydraulic cylinder 15 passes upward through the first through hole and extends and retracts vertically. A first adjustable support rod 18 is fixedly connected to the top of the first sliding plate 17. This first adjustable support rod 18 can be adjusted vertically relative to the first sliding plate 17. A first pressing head 19 is hinged to the first sliding plate 17. One end of the first pressing head 19 is a free end, and the other end is hinged to the output end of the second hydraulic cylinder 15. The hinge point between the first pressing head 19 and the first sliding plate 17 is located in the middle of the first pressing head 19 near the second hydraulic cylinder 15. In the most preferred embodiment, a hinge seat is detachably mounted on the upper surface of the first sliding plate 17 using bolts. The top of the first pressing head 19 is connected to the hinge seat by a hinge shaft. When the piston rod of the second hydraulic cylinder 15 extends or retracts, the second hydraulic cylinder 15 drives the free end of the first pressing head 19 to swing up and down. Since the first pressing head 19 is mounted on the first sliding plate 17, when the first sliding plate 17 moves, the first pressing head 19 on the first sliding plate 17 moves synchronously.

[0039] like Figure 4 As shown, the straight edge pressing mechanism 5 of the present invention includes a second support frame 20 and a third oil cylinder 21. The bottom end of the second support frame 20 is fixedly connected to the displacement frame 1. In the present invention, the second support frame 20 is detachably installed on the top of the displacement frame 1 using bolts. A third sliding groove 22 is provided on the top of the second support frame 20. In the present invention, two front and rear third limiting plates are arranged parallel to each other in the left and right direction on the top of the second support frame 20. A third sliding groove 22 is provided on the bottom of the opposite side of the two third limiting plates. A second sliding plate 23 is slidably connected inside the third sliding groove 22. The front and rear sides of the second sliding plate 23 are respectively located in the third sliding groove 22 on the two third limiting plates and can slide relative to the third sliding groove 22. When the second sliding plate 23 slides left and right, the front and rear ends of the second sliding plate 23 slide within the two third sliding grooves 22 respectively.

[0040] In this invention, the second slide plate 23 is fixedly connected to the third hydraulic cylinder 21. The output end of the third hydraulic cylinder 21 passes through the outer wall of the second slide plate 23. The cylinder body of the third hydraulic cylinder 21 is detachably installed at the bottom of the second slide plate 23 with bolts. The output shaft of the third hydraulic cylinder 21 is slidably connected to the second slide plate 23. That is, the piston rod of the third hydraulic cylinder 21 passes upward through the second slide plate 23 and extends and retracts vertically. In the most optimal way, a second through hole is provided on the second slide plate 23, which extends through its upper and lower sides. The diameter of the second through hole is slightly larger than the diameter of the piston rod of the third hydraulic cylinder 21. The piston rod of the third hydraulic cylinder 21 passes upward through the second through hole. When the piston rod of the third hydraulic cylinder 21 extends and retracts vertically, the output end of the third hydraulic cylinder 21 will slide with the second slide plate 23. That is, the piston rod of the third hydraulic cylinder 21 can extend and retract vertically relative to the second slide plate 23.

[0041] In this invention, a second adjustable support rod 24 is fixedly connected to the top of the second slide plate 23. The second adjustable support rod 24 has the same structure as the first adjustable support rod 18. The second adjustable support rod 24 can be adjusted vertically relative to the second slide plate 23. A second pressing head 25 is hinged to the top of the second slide plate 23. The second pressing head 25 is hinged to the output end of the third hydraulic cylinder 21. The structure of the second pressing head 25 in this invention is the same as the structure of the first pressing head 19. The hinge structure of the second pressing head 25 and the second slide plate 23 is the same as the hinge structure of the first pressing head 19 and the first slide plate 17. The hinge part of the second pressing head 25 and the third hydraulic cylinder 21 is the same as the hinge part of the first pressing head 19 and the second hydraulic cylinder 15. These details will not be elaborated upon in this invention. When the second slide plate 23 moves horizontally, the second slide plate 23 will drive the second pressing head 25 on it to move horizontally synchronously.

[0042] like Figure 2 As shown, the present invention has an adjusting bolt 26 fixedly connected to the top of the displacement frame 1. The number of adjusting bolts 26 is set to multiple, and the multiple adjusting bolts 26 are evenly distributed on the top of the displacement frame 1. When the side plate workpiece reaches the displacement frame 1, the side plate workpiece will contact the adjusting bolt 26. The present invention preferably sets the number of displacement frames 1 to be the same as the number of straight edge pressing mechanisms 5. An adjusting bolt 26 is provided between each straight edge pressing mechanism 5 and the corresponding tensioning mechanism 6.

[0043] The working principle of this invention is as follows: When the device is in use, the main positioner 2 is fixed on the foundation, and the slave positioner 3 is fixed on the foundation in the same way. The main positioner 2 and the slave positioner 3 are leveled. The front and rear ends of the positioner frame 1 are connected to the main positioner 2 and the slave positioner 3 respectively by flange bolts. When the main positioner 2 and the slave positioner 3 move, the main positioner 2 and the slave positioner 3 can drive the positioner frame 1 to move, so that the positioner frame 1 can change position with the main positioner 2 and the slave positioner 3. The side plate workpiece is automatically fed onto the positioner frame 1 by the automatic feeding equipment, so that the side plate workpiece can reach the straight edge clamping mechanism 5 and the side edge clamping mechanism 4.

[0044] When it is necessary to fix the position of the side plate workpiece, the first hydraulic cylinder 11 is activated. The output end of the first hydraulic cylinder 11 drives the tensioning slider 10 to move, causing the tensioning slider 10 to slide inside the first slide groove 9. This causes the tensioning slider 10 to press against the arc-shaped outer wall of the side plate workpiece. The tensioning slider 10 will drive the side plate workpiece to move, causing the side plate workpiece to press against the adjusting screw 13. One side of the outer wall of the support plate 12 is arc-shaped, so that the multiple adjusting screws 13 are initially distributed in an arc shape, allowing the multiple adjusting screws 13 to fit against the arc of the side plate workpiece. When the tensioning slider 10 reaches the appropriate position, the first hydraulic cylinder 11 is stopped. When fixing the side plate workpiece, the adjustable screws 13 can be rotated and adjusted in advance, so that the multiple adjustable screws 13 can fit against the side plate workpiece. The multiple adjustable screws 13 are adjusted to a suitable arc on the support plate 12, so that the arc-shaped part of the side plate workpiece can fit against the multiple adjustable screws 13.

[0045] When it is necessary to limit the position of the side plate workpiece, the first slide plate 17 is moved, causing it to slide within the second slide groove 16. Simultaneously, the first slide plate 17 drives the first adjustable support rod 18 and the second hydraulic cylinder 15 to move synchronously. The first slide plate 17 also drives the first pressing head 19 to move. When the first slide plate 17 reaches the appropriate position, a bolt is passed through the first support frame 14, causing the bolt to thread against the first support frame 14. This causes one end of the bolt to press against the first slide plate 17, fixing its position and placing the side plate workpiece between the first adjustable support rod 18 and the first pressing head 19. Simultaneously, the second hydraulic cylinder 15 is activated, extending its piston rod. This causes the output end of the second hydraulic cylinder 15 to drive the first pressing head 19, causing its free end to flip towards the first adjustable support rod 18, thus pressing against the side plate workpiece. The second sliding plate 23 is pressed and fixed between the first pressing head 19 and the first adjustable support rod 18. At the same time, the second sliding plate 23 is moved, causing the second sliding plate 23 to slide within the third sliding groove 22. The second sliding plate 23 simultaneously drives the second adjustable support rod 24 and the third hydraulic cylinder 21 to move. The second sliding plate 23 also drives the second pressing head 25 to move. When the second sliding plate 23 reaches the appropriate position, a bolt is passed through the second support frame 20, causing the bolt to move with the thread of the second support frame 20. This causes one end of the bolt to press against the second sliding plate 23, fixing the position of the second sliding plate 23. This places the side plate workpiece between the second adjustable support rod 24 and the second pressing head 25. Simultaneously, the third hydraulic cylinder 21 is activated, causing the output end of the third hydraulic cylinder 21 to drive the second pressing head 25 to move. The second pressing head 25 presses and fixes the side plate workpiece, pressing it tightly between the second pressing head 25 and the second adjustable support rod 24.

[0046] When the side plate workpiece welding is completed, the first hydraulic cylinder 11 is activated. The piston rod of the first hydraulic cylinder 11 retracts, pulling the tensioning slider 10 away from the side plate workpiece. Simultaneously, the tensioning slider 10 slides within the first slide groove 9, causing it to return to its initial position. At the same time, the second hydraulic cylinder 15 and the third hydraulic cylinder 21 are activated. The output end of the second hydraulic cylinder 15 drives the first pressing head 19 to move, causing it to swing on the first sliding plate 17, moving it away from the side plate workpiece. When the first pressing head 19 moves away from the side plate workpiece, it pulls the first sliding plate 17, causing it to move within the second slide groove 16. The first sliding plate 17 simultaneously drives the second hydraulic cylinder 15 and the first adjustable support rod 18 to move, returning them to their initial positions. The first sliding plate 17 also drives the first pressing head 19 to move, returning it to its initial position. The output end of the third hydraulic cylinder 21 drives the second pressing head 25... The movement causes the second clamping head 25 to swing on the second slide plate 23, causing the second clamping head 25 to move away from the side plate workpiece. When the second clamping head 25 moves away from the side plate workpiece, it pulls the second slide plate 23 to move, causing the second slide plate 23 to move inside the third slide groove 22. The second slide plate 23 simultaneously drives the third hydraulic cylinder 21 and the second adjustable support rod 24 to move, causing the third hydraulic cylinder 21 and the second adjustable support rod 24 to return to their initial positions. The second slide plate 23 simultaneously drives the second clamping head 25 to move, causing the second clamping head to return to its initial position, causing the straight edge clamping mechanism 5 and the side edge clamping mechanism 4 to reset. The first clamping head 19 and the second clamping head 25 are connected by multiple rods, so that the second hydraulic cylinder 15 and the third hydraulic cylinder 21 can drive the first clamping head 19 and the second clamping head 25 to swing. Adjust the adjustable screw 13 according to the curvature of the side plate workpiece. Rotate the adjustable screw 13 so that the curvature formed by the multiple adjustable screws 13 matches the curvature of the side plate workpiece. Repeat the above operation.

[0047] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

[0048] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0049] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0050] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic positioning welding device for a side panel of a compartment, comprising a displacement frame (1); The main positioner (2) is located on one side of the outer wall of the positioner frame (1), and the main positioner (2) is connected to the positioner frame (1) by bolts; The slave positioner (3) is located on the other side of the outer wall of the positioner frame (1), and the slave positioner (3) is connected to the positioner frame (1) by bolts; characterized in that: The top of both ends of the displacement frame (1) is fixedly connected to a side clamping mechanism (4), which is used to clamp and fix the side plate workpiece to be welded from both ends during use. The side clamping mechanism (4) has multiple straight edge clamping mechanisms (5) on one side, which are used to clamp and fix the straight edge of the side plate workpiece to be welded from the right side during use. The straight edge clamping mechanism (5) is fixedly connected to the top of the displacement frame (1). The side clamping mechanism (4) away from the straight edge clamping mechanism (5) is provided with a tensioning mechanism (6). The tensioning mechanism (6) is fixedly connected to the top of the displacement frame (1). The number of tensioning mechanisms (6) is the same as the number of straight edge clamping mechanisms (5), and each tensioning mechanism (6) corresponds to one of the straight edge clamping mechanisms (5). The tensioning mechanism (6) consists of a mounting plate (7) and a mounting bracket (8). The mounting plate (7) is fixedly connected to the top of the displacement frame (1). The outer wall of the mounting plate (7) is provided with a first sliding groove (9). The mounting bracket (8) is fixedly connected to the mounting plate (7). A tensioning slider (10) is slidably connected inside the first sliding groove (9). A first hydraulic cylinder (11) is fixedly connected to the top of the mounting plate (7). The output end of the first hydraulic cylinder (11) is fixedly connected to the tensioning slider (10). A support plate (12) is fixedly connected to the outer wall of the mounting bracket (8). An adjustable screw (13) is fixedly connected to the outer wall of the support plate (12).

2. An automatically positionable van side panel welding device according to claim 1, characterized in that: The side pressing mechanism (4) consists of a first support frame (14) and a second oil cylinder (15). The bottom end of the first support frame (14) is fixedly connected to the displacement frame (1). The top of the first support frame (14) is provided with a second slide groove (16), and a first slide plate (17) is slidably connected inside the second slide groove (16).

3. The automatically positioned side panel welding device for a cargo box according to claim 2, characterized in that: The first slide plate (17) is fixedly connected to the cylinder body of the second oil cylinder (15), and the piston rod of the second oil cylinder (15) passes through the outer wall of the first slide plate (17).

4. The automatically positioned side panel welding device for a cargo box according to claim 2, characterized in that: The output shaft of the second cylinder (15) is slidably connected to the first slide plate (17). The top of the first slide plate (17) is fixedly connected to a first adjustable support rod (18). The top of the first slide plate (17) is hinged to a first pressing head (19). The first pressing head (19) is hinged to the output end of the second cylinder (15).

5. The automatically positioned side panel welding device for a cargo box according to claim 1, characterized in that: The straight edge pressing mechanism (5) consists of a second support frame (20) and a third oil cylinder (21). The bottom end of the second support frame (20) is fixedly connected to the displacement frame (1). The top of the second support frame (20) is provided with a third sliding groove (22), and a second sliding plate (23) is slidably connected inside the third sliding groove (22).

6. The automatically positioning side panel welding device for a cargo box according to claim 5, characterized in that: The second slide plate (23) is fixedly connected to the cylinder body of the third oil cylinder (21), the piston rod of the third oil cylinder (21) passes through the outer wall of the second slide plate (23), and the output shaft of the third oil cylinder (21) is slidably connected to the second slide plate (23).

7. The automatically positioning side panel welding device for a cargo box according to claim 5, characterized in that: The second slide plate (23) is fixedly connected to the top of the second adjustable support rod (24), and the second pressing head (25) is hinged to the top of the second slide plate (23). The second pressing head (25) is hinged to the output end of the third oil cylinder (21).

8. The automatically positioning side panel welding device for a cargo box according to claim 1, characterized in that: The top of the displacement frame (1) is fixedly connected with an adjusting bolt (26), and the number of adjusting bolts (26) is set to multiple, with the multiple adjusting bolts (26) evenly distributed on the top of the displacement frame (1).

9. The automatically positioned side panel welding device for a cargo box according to claim 1, characterized in that: The number of the side pressing mechanism (4) is set to multiple, and the multiple side pressing mechanisms (4) are evenly distributed on the top of the displacement frame (1).

10. The automatically positioning side panel welding device for a cargo box according to claim 1, characterized in that: The cross-sectional shape of the support plate (12) is set to an arc shape, and the cross-sectional shape of the tensioning slider (10) is set to a right trapezoid.

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