Profile end edge welding device

Abstract

The invention relates to the technical field of sectional material welding, and discloses a sectional material end edge welding device which comprises a fixed base, a workbench used for placing a wavy plate is fixed to the upper surface of the fixed base, a positioning seat is fixed to the workbench, a longitudinal plate is fixed to the upper surface of the positioning seat, a transverse plate is fixed to the top of the longitudinal plate, and the transverse plate is fixed to the top of the longitudinal plate. A positioning clamping plate is arranged on the lower surface of the transverse plate in a sliding manner; a top plate capable of moving up and down is arranged above the workbench, a first wave-shaped sliding groove is formed in the top plate, a mounting seat is arranged on the top plate in a sliding mode, and a welding gun is arranged on the lower surface of the mounting seat; according to the technical scheme, the first wave-shaped sliding groove is formed, and the track of the first wave-shaped sliding groove is the same as that of the wave-shaped plate, so that when the welding gun welds the end edge of the wave-shaped plate, the welding gun can move along the track of the end edge of the wave-shaped plate, the welding sufficiency is improved, and the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of profile welding, in particular to a profile end edge welding device. Background Art

[0002] Profiles are objects with certain geometric shapes made of iron or steel and other materials with certain strength and toughness through rolling, extrusion, casting and other processes. As a type of profile, corrugated plates require welding of the ends of two sets of corrugated plates during processing for subsequent use.

[0003] When welding two groups of corrugated plates, a welding device is required. Existing welding devices, such as welding guns, are usually used for manual welding. During welding, the welding gun needs to be moved along the trajectory of the corrugated plates. Due to manual welding, it is time-consuming and laborious to move along the corrugated plates, and the horizontality during movement cannot be guaranteed. Welding misalignment is prone to occur, resulting in insufficient welding, thereby reducing the welding quality. Summary of the invention

[0004] The present invention provides a profile end edge welding device. By setting a first wavy slide groove and making the trajectory of the first wavy slide groove the same as the trajectory of a wavy plate, when the welding gun welds the end edge of the wavy plate, the welding gun can move along the trajectory of the end edge of the wavy plate, thereby avoiding manual welding. This solves the problem mentioned in the above background technology that manual welding is time-consuming and labor-intensive when moving along the wavy plate, and the horizontality during movement cannot be guaranteed, which easily leads to welding misalignment, resulting in insufficient welding, thereby reducing the welding quality.

[0005] The present invention provides the following technical solution: a profile end edge welding device, comprising a fixed base, a workbench for placing a corrugated plate is fixed on the upper surface of the fixed base, a positioning clamp is arranged on the workbench, the positioning clamp presses and fixes the corrugated plate by moving downward, and a top plate that can move up and down is arranged above the workbench;

[0006] A first wave-shaped groove is provided on the top plate, a rotating shaft is rotatably arranged inside the first wave-shaped groove, a first gear is fixed on the circumference of the rotating shaft, a rack is arranged inside the first wave-shaped groove, a servo motor is fixedly connected to one end of the rotating shaft, a mounting seat is slidably arranged on the top plate, a welding gun is arranged on the lower surface of the mounting seat, and the welding gun moves along the trajectory of the first wave-shaped groove through the mounting seat to weld the wave-shaped plate.

[0007] As an optional scheme of the profile end welding device described in the present invention, a positioning seat is fixed on the workbench, a longitudinal plate is fixed on the upper surface of the positioning seat, a transverse plate is fixed on the top of the longitudinal plate, a servo electric cylinder is fixed on the outer surface of the positioning seat, a first hydraulic oil groove is provided inside the positioning seat, a first piston plate is slidably arranged inside the first hydraulic oil groove, the output end of the servo electric cylinder is fixedly connected to the first piston plate, a second hydraulic oil groove is provided inside the transverse plate, an oil pipeline is provided between the second hydraulic oil groove and the first hydraulic oil groove, a second piston plate is slidably arranged inside the second hydraulic oil groove, and a transmission rod is fixed between the lower surface of the second piston plate and the positioning clamping plate.

[0008] As an optional solution of the profile end welding device described in the present invention, a pad is fixed to the upper surface of the workbench, a hydraulic cylinder is fixed to the upper surface of the pad, and an output end of the hydraulic cylinder is fixedly connected to the lower surface of the top plate.

[0009] As an optional solution of the profile end welding device described in the present invention, the first gear is meshed with the rack, the servo motor is slidably arranged on the outer surface of the top plate, the other end of the rotating shaft is sleeved with a connecting plate, the bottom end of the connecting plate is fixed to the upper surface of the mounting seat, and the lower surface of the top plate is provided with a sliding cavity for the connecting plate to slide.

[0010] As an optional solution to the profile end welding device described in the present invention, a side plate is welded to the lower surface of the top plate, a second wavy groove having the same trajectory as the first wavy groove is provided on the side plate, a convex column is welded to the outer surface of the mounting seat, and the convex column is slidably arranged in the second wavy groove.

[0011] As an optional solution of the profile end welding device described in the present invention, a groove is provided on the lower surface of the mounting seat, a slide plate is slidably connected in the groove, the welding gun is fixedly installed on the lower surface of the slide plate, a movable groove is provided inside the mounting seat, a first tooth plate is slidably arranged in the movable groove, and the slide plate slides in the groove by moving up and down through the first tooth plate.

[0012] As an optional solution of the profile end welding device described in the present invention, a sliding rod is fixed to the upper surface of the first tooth plate, and the sliding rod is slidably arranged in the sliding cavity. A serrated sliding groove is opened on the inner wall of the sliding cavity, and a sliding protrusion is fixed to the end of the sliding rod, and the sliding protrusion is slidably arranged in the serrated sliding groove.

[0013] As an optional solution of the profile end welding device described in the present invention, a rotating groove is opened inside the mounting seat, and a second gear and a third gear that are meshed with each other are rotatably arranged inside the rotating groove, one side of the second gear is meshed with the first tooth plate, and a second tooth plate is fixed on the upper surface of the slide plate, and the second tooth plate is meshed with the third gear.

[0014] As an optional solution to the profile end welding device of the present invention, a limiting rod is fixed to the outer surface of the slide plate, a limiting slot is provided on the mounting seat, and the limiting rod is slidably disposed in the limiting slot.

[0015] As an optional solution of the profile end welding device of the present invention, the limiting slide groove, the slide plate, the second tooth plate and the groove are all configured as an arc structure with the welding head of the welding gun as the center.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the profile end edge welding device, when welding the corrugated plate, the position of the welding gun is adjusted by the hydraulic cylinder so that the welding head of the welding gun contacts the end edge of the corrugated plate, and then the rotating shaft is driven to rotate by the servo motor, and the rotating shaft drives the first gear to rotate, so that the first gear moves inside the first corrugated slide groove, so that the connecting plate slides inside the slide cavity, the connecting plate drives the mounting seat to move, and the mounting seat drives the welding gun to move, so that the welding gun can perform welding along the trajectory of the corrugated plate, thereby increasing the sufficiency of welding, improving the welding quality, and avoiding manual welding at the same time, saving time and effort, which is conducive to improving welding efficiency.

[0018] 2. In the profile end welding device, when the connecting plate slides in the sliding cavity, it drives the sliding rod to slide in the sliding cavity, and the sliding rod drives the sliding protrusion to slide inside the serrated sliding groove, so that the sliding rod can reciprocate up and down, and the up and down reciprocating movement of the sliding rod can drive the first tooth plate to reciprocate up and down, and the first tooth plate drives the second gear and the third gear to rotate, so that the second tooth plate drives the slide plate to slide back and forth left and right in the groove, and the slide plate drives the welding gun to deflect, so as to facilitate the adjustment of the angle between the welding head of the welding gun and the weld, and to facilitate the adjustment of the angle within a suitable range during welding, which is beneficial to improving the welding quality.

[0019] 3. In the profile end welding device, when the slide plate slides back and forth left and right in the groove, a limit rod and a limit slide groove are set, so that the slide plate drives the limit rod to slide inside the limit slide groove when it moves, and at the same time, the limit slide groove, the slide plate, the second tooth plate and the groove are all set to an arc structure with the welding head of the welding gun as the center of the circle, so that when the angle between the welding head of the welding gun and the weld is adjusted, the welding head of the welding gun is always in contact with the weld, avoiding the situation where the welding head of the welding gun does not contact the weld, resulting in the problem that welding cannot be achieved in some positions, thereby further improving the adequacy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the positioning card plate part in the present invention.

[0022] Figure 3 It is a structural cross-sectional view of the positioning seat and the cross plate part in the present invention.

[0023] Figure 4 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle.

[0025] Figure 6 It is a cross-sectional view of the internal structure of the top plate in the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle.

[0027] Figure 8 For the present invention Figure 6 Schematic diagram of the structure of the middle mounting seat part.

[0028] Fig. 9 It is a structural schematic diagram of the side panel part in the present invention.

[0029] Fig.10 It is a schematic diagram of the arc trajectory of the limiting slide groove part in the present invention.

[0030] In the figure: 1, fixed base; 2, corrugated plate; 3, workbench; 4, positioning seat; 5, longitudinal plate; 6, transverse plate; 7, positioning card plate; 8, top plate; 9, first corrugated slide; 10, mounting seat; 11, welding gun; 12, servo electric cylinder; 13, first hydraulic oil tank; 14, first piston plate; 15, second hydraulic oil tank; 16, oil pipeline; 17, second piston plate; 18, transmission rod; 19, pad; 20, hydraulic cylinder; 21, rotating shaft; 22. First gear; 23. Rack; 24. Servo motor; 25. Connecting plate; 26. Sliding cavity; 27. Side plate; 28. Second wave-shaped sliding groove; 29. ​​Boss; 30. Groove; 31. Slide plate; 32. Moving groove; 33. First tooth plate; 34. Slide bar; 35. Sawtooth sliding groove; 36. Sliding protrusion; 37. Rotating groove; 38. Second gear; 39. Third gear; 40. Second tooth plate; 41. Limit rod; 42. Limit sliding groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figure 1-Figure 10 A profile end welding device comprises a fixed base 1, a workbench 3 for placing a corrugated plate 2 is fixed on the upper surface of the fixed base 1, a positioning seat 4 is fixed on the workbench 3, a longitudinal plate 5 is fixed on the upper surface of the positioning seat 4, a transverse plate 6 is fixed on the top of the longitudinal plate 5, a positioning card plate 7 is slidably provided on the lower surface of the transverse plate 6, and the positioning card plate 7 presses and fixes the corrugated plate 2 by moving downward;

[0033] A top plate 8 that can move up and down is arranged above the workbench 3, a first wave-shaped chute 9 is opened on the top plate 8, a mounting seat 10 is slidably arranged on the top plate 8, a welding gun 11 is arranged on the lower surface of the mounting seat 10, and the welding gun 11 moves along the track of the first wave-shaped chute 9 through the mounting seat 10 to weld the wave-shaped plate 2;

[0034] A servo electric cylinder 12 is fixed to the outer surface of the positioning seat 4, a first hydraulic oil groove 13 is provided inside the positioning seat 4, a first piston plate 14 is slidably provided inside the first hydraulic oil groove 13, an output end of the servo electric cylinder 12 is fixedly connected to the first piston plate 14, a second hydraulic oil groove 15 is provided inside the cross plate 6, an oil delivery pipe 16 is provided between the second hydraulic oil groove 15 and the first hydraulic oil groove 13, a second piston plate 17 is slidably provided inside the second hydraulic oil groove 15, a transmission rod 18 is fixed between the lower surface of the second piston plate 17 and the positioning card plate 7;

[0035] A backing plate 19 is fixed to the upper surface of the workbench 3, a hydraulic cylinder 20 is fixed to the upper surface of the backing plate 19, and an output end of the hydraulic cylinder 20 is fixedly connected to the lower surface of the top plate 8;

[0036] A rotating shaft 21 is rotatably arranged inside the first wave-shaped chute 9, a first gear 22 is fixed on the circumference of the rotating shaft 21, a rack 23 is arranged inside the first wave-shaped chute 9, the first gear 22 is meshed with the rack 23, one end of the rotating shaft 21 is fixedly connected to a servo motor 24, the servo motor 24 is slidably arranged on the outer surface of the top plate 8, the other end of the rotating shaft 21 is sleeved with a connecting plate 25, the bottom end of the connecting plate 25 is fixed to the upper surface of the mounting seat 10, and a sliding cavity 26 for the connecting plate 25 to slide is opened on the lower surface of the top plate 8;

[0037] A side plate 27 is welded to the lower surface of the top plate 8 , and a second wavy groove 28 having the same trajectory as the first wavy groove 9 is formed on the side plate 27 . A boss 29 is welded to the outer surface of the mounting seat 10 , and the boss 29 is slidably disposed in the second wavy groove 28 .

[0038] In the present technical solution, the trajectory of the first corrugated chute 9 is the same as the trajectory of the corrugated plate 2. When welding the end edges of the two corrugated plates 2, the end edges of the two corrugated plates 2 are firstly abutted, and the position of the weld is located directly below the welding gun 11, such as Figure 3 As shown, the first piston plate 14 is pushed to move to the left by the servo electric cylinder 12, and the hydraulic oil from the first piston plate 14 to the inside of the first hydraulic oil groove 13 is filled into the second hydraulic oil groove 15 through the oil pipe 16. After the second hydraulic oil groove 15 is filled with hydraulic oil, the second piston plate 17 is pushed to move downward, and the second piston plate 17 moves downward and drives the positioning card plate 7 to move downward through the transmission rod 18, so that the positioning card plate 7 presses and fixes the corrugated plate 2, and the lower surface of the positioning card plate 7 is an arc surface structure, which is the same as the arc surface amplitude of the corrugated plate 2, so that the positioning card plate 7 can better fit the surface of the corrugated plate 2, thereby increasing the pressing and fixing effect;

[0039] After the corrugated plate 2 is fixed, the top plate 8 is driven to move downward by contraction of the hydraulic cylinder 20, and the downward movement of the top plate 8 drives the welding gun 11 to move downward, so that the welding gun 11 moves to the welding seam, and then the servo motor 24 is started to drive the rotating shaft 21 to rotate, and the rotation of the rotating shaft 21 drives the first gear 22 to rotate, and through the meshing of the first gear 22 and the rack 23, when the first gear 22 rotates, the first gear 22 moves on the rack 23, and the trajectory of the rack 23 is the same as the trajectory of the first corrugated chute 9. When the first gear 22 moves along the rack 23, the rotating shaft 21 slides along the first corrugated chute 9, and the rotating shaft 21 drives the connecting plate 25 to move, and the connecting plate 25 drives the mounting seat 10 to move, and the mounting seat 10 drives the welding gun 11 to move, so that the movement trajectory of the welding gun 11 is the same as that of the corrugated plate 2, thereby completing the welding process of the end edge of the corrugated plate 2;

[0040] In the present technical solution, by setting the side plate 27 and the second wavy groove 28, the second wavy groove 28 has the same trajectory as the first wavy groove 9. At the same time, by sliding the protruding column 29 in the second wavy groove 28, the mounting seat 10 can be limited to prevent the connecting plate 25 from rotating with the rotating shaft 21. By limiting the mounting seat 10, it can be ensured that the connecting plate 25 is always in the vertical downward direction during the movement.

[0041] In the second embodiment, when the welding gun 11 is welding, a certain angle needs to be set between the welding head of the welding gun 11 and the welded part for welding, so that the welding quality is higher. In order to improve the welding quality of the corrugated plate 2, a most suitable welding angle will be selected for welding before welding. However, when welding the corrugated plate 2, due to the arc structure of the corrugated plate 2, when the welding gun 11 moves along the end edge of the corrugated plate 2, the angle between the welding head of the welding gun 11 and the corrugated plate 2 will change, so that the welding angle cannot always be within a reasonable range, thereby reducing the welding quality. In view of this problem, this embodiment is an improvement made on the basis of the first embodiment. For details, please refer to Figure 1-Figure 10 A groove 30 is provided on the lower surface of the mounting seat 10, a slide plate 31 is slidably connected in the groove 30, the welding gun 11 is fixedly mounted on the lower surface of the slide plate 31, a moving groove 32 is provided inside the mounting seat 10, a first tooth plate 33 is slidably arranged in the moving groove 32, and the slide plate 31 slides in the groove 30 by moving up and down through the first tooth plate 33;

[0042] A slide bar 34 is fixed on the upper surface of the first tooth plate 33. The slide bar 34 is slidably disposed in the slide cavity 26. A sawtooth slide groove 35 is provided on the inner wall of the slide cavity 26. A sliding protrusion 36 is fixed on the end of the slide bar 34. The sliding protrusion 36 is slidably disposed in the sawtooth slide groove 35.

[0043] A rotating groove 37 is provided inside the mounting base 10, and a second gear 38 and a third gear 39 meshing with each other are rotatably arranged inside the rotating groove 37. One side of the second gear 38 meshes with the first tooth plate 33, and a second tooth plate 40 is fixed to the upper surface of the slide plate 31, and the second tooth plate 40 meshes with the third gear 39.

[0044] In the present technical solution, the highest point of the first wavy chute 9 is marked as b, and the lowest point is marked as a. The point on the zigzag chute 35 corresponding to the highest point b of the first wavy chute 9 is marked as c, and the point corresponding to the lowest point a of the first wavy chute 9 is marked as d. The highest point of the zigzag chute 35 is marked as e, and the lowest point is marked as f. When the welding gun 11 is welding along the end edge of the wavy plate 2, the rotating shaft 21 first moves along the first wavy chute 9, so that the welding head of the welding gun 11 moves along the end edge of the wavy plate 2. When moving from a to b of the first wavy chute 9, the angle between the welding head of the welding gun 11 and the wavy plate 2 changes to first become smaller, and then become larger after reaching the midpoint between a and b. At the same time, when the rotating shaft 21 moves from a to b of the first wavy chute 9, the mounting seat 10 drives the slide bar 34 to slide in the zigzag chute 35, and slides from d to c of the zigzag chute 35.

[0045] When sliding along point a of the first wavy chute 9 to the midpoint between points a and b, the angle between the welding head and the wavy plate 2 is gradually reduced. At this time, the sliding protrusion 36 slides along point d to point e of the zigzag chute 35, and the height from point e to point d is greater than the height from point a to the midpoint between points a and b, so that the sliding protrusion 36 pulls the sliding rod 34 upward to move, and the sliding rod 34 pulls the first toothed plate 33 upward to move, so that the first toothed plate 33 and the mounting seat 10 move relative to each other. When the first toothed plate 33 moves upward, it drives the second gear 38 to rotate, and the second gear 38 rotates to drive the third gear 39 to rotate, and the third gear 39 rotates to drive the second rack 23 to move leftward. The second rack 23 moves leftward and drives the slide plate 31 to slide leftward in the groove 30, so that the slide plate 31 drives the welding gun 11 to rotate, so that the top of the welding gun 11 deflects to the left, thereby increasing the angle between the welding head of the welding gun 11 and the wavy plate 2.

[0046] When sliding toward b along the midpoint between a and b of the first wavy chute 9, the angle between the welding head and the wavy plate 2 is gradually increasing. At this time, the sliding protrusion 36 slides toward c along the zigzag chute 35 through the sliding protrusion 36, and the height from c to d is the same as the height from a to b, so that the sliding protrusion 36 pulls the sliding rod 34 downward to move, and the sliding rod 34 pulls the first tooth plate 33 downward to move downward. When the mounting seat 10 moves upward, the first tooth plate 33 moves downward, and the first tooth plate 33 moves downward, driving the second gear 38 and the third gear 39 to reverse, so that the second rack 23 performs a reset movement to the right, and the second rack 23 drives the slide plate 31 to perform a reset movement to the right, and the slide plate 31 drives the top of the welding gun 11 to deflect to the right, thereby reducing the angle between the welding head of the welding gun 11 and the wavy plate 2;

[0047] When sliding along point b of the first wavy chute 9 to the midpoint between point b and the next point a, the angle between the welding head and the wavy plate 2 is still gradually increasing. At this time, the sliding protrusion 36 slides along point c of the zigzag chute 35 to point f, and the height from point f to point c is greater than the height from point b to the midpoint between point b and the next point a, so that relative movement occurs between the mounting seat 10 and the slide bar 34, and the sliding protrusion 36 continues to pull the slide bar 34 downward to move, so that the slide bar 34 continues to drive the first tooth plate 33 to move downward, and the first tooth plate 33 continues to drive the second gear 38 and the third gear 39 to reverse, so that the second rack 23 continues to drive the slide plate 31 to move to the right. At this time, the slide plate 31 drives the top of the welding gun 11 to continue to deflect to the right, thereby continuing to reduce the angle between the welding head of the welding gun 11 and the wavy plate 2, until the rotating shaft 21 slides to the midpoint between point b and the next point a;

[0048] When sliding along the midpoint between point b and the next point a of the first wavy groove 9 to the next point a, the angle between the welding head and the wavy plate 2 is gradually reduced. At this time, the sliding protrusion 36 slides along point f of the serrated groove 35 to the next point d. The sliding protrusion 36 pulls the slide bar 34 to move upward, and the slide bar 34 drives the first tooth plate 33 to move upward. The first tooth plate 33 drives the second gear 38 and the third gear 39 to reset and rotate, so that the second rack 23 drives the slide plate 31 to reset to the left, and the slide plate 31 resets to the left, driving the top of the welding gun 11 to deflect to the left, thereby increasing the angle between the welding head of the welding gun 11 and the wavy plate 2. At this time, the state of the welding gun 11 is the same as the initial state. Repeat the above process and continue to weld along the end edge of the wavy plate 2 until the welding is completed.

[0049] In the third embodiment, when the top of the welding gun 11 is moved so that the angle between the welding head of the welding gun 11 and the corrugated plate 2 is adjusted, the welding head may also move with the movement of the welding gun 11. At this time, the welding head will be separated from the welding surface, that is, the welding head of the welding gun 11 will not contact the weld, so that some positions cannot be welded, thereby reducing the adequacy of welding. In view of this problem, this embodiment is an improvement made on the basis of the second embodiment. For details, please refer to Figure 1-Figure 10 A limiting rod 41 is fixed on the outer surface of the slide plate 31, a limiting slot 42 is provided on the mounting seat 10, and the limiting rod 41 is slidably disposed in the limiting slot 42;

[0050] The limiting slide groove 42 , the slide plate 31 , the second tooth plate 40 and the groove 30 are all arranged as an arc-shaped structure with the welding head of the welding gun 11 as the center of the circle.

[0051] In the present technical solution, by providing an arc-shaped limiting groove 42, the limiting rod 41 slides inside the limiting groove 42, thereby limiting the sliding track of the slide plate 31. Fig.10 As shown, the sliding trajectory of the slide plate 31 is an arc with the gun head of the welding gun 11 as the center, so that when the slide plate 31 drives the top of the welding gun 11 to move, the position of the welding head of the welding gun 11 remains unchanged, so that when the angle between the welding head of the welding gun 11 and the end edge of the corrugated plate 2 is adjusted, the welding head is always in contact with the weld, thereby improving the adequacy of welding.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A profile end welding device, comprising a fixed base (1), characterized in that: A workbench (3) for placing the corrugated plate (2) is fixed on the upper surface of the fixed base (1); a positioning clamp (7) is provided on the workbench (3); the positioning clamp (7) presses and fixes the corrugated plate (2) by moving downward; and a top plate (8) that can move up and down is provided above the workbench (3); The top plate (8) is provided with a first wave-shaped slide groove (9), a rotating shaft (21) is rotatably arranged inside the first wave-shaped slide groove (9), a first gear (22) is fixed on the circumference of the rotating shaft (21), a rack (23) is arranged inside the first wave-shaped slide groove (9), one end of the rotating shaft (21) is fixedly connected to a servo motor (24), a mounting seat (10) is slidably arranged on the top plate (8), a welding gun (11) is arranged on the lower surface of the mounting seat (10), and the welding gun (11) moves along the trajectory of the first wave-shaped slide groove (9) through the mounting seat (10) to weld the wave-shaped plate (2).

2. The profile end welding device according to claim 1, characterized in that: A positioning seat (4) is fixed on the workbench (3), a longitudinal plate (5) is fixed on the upper surface of the positioning seat (4), a transverse plate (6) is fixed on the top of the longitudinal plate (5), a servo electric cylinder (12) is fixed on the outer surface of the positioning seat (4), a first hydraulic oil groove (13) is provided inside the positioning seat (4), a first piston plate (14) is slidably arranged inside the first hydraulic oil groove (13), an output end of the servo electric cylinder (12) is fixedly connected to the first piston plate (14), a second hydraulic oil groove (15) is provided inside the transverse plate (6), an oil delivery pipe (16) is arranged between the second hydraulic oil groove (15) and the first hydraulic oil groove (13), a second piston plate (17) is slidably arranged inside the second hydraulic oil groove (15), and a transmission rod (18) is fixed between the lower surface of the second piston plate (17) and the positioning clamping plate (7).

3. The profile end welding device according to claim 2, characterized in that: A pad (19) is fixed on the upper surface of the workbench (3), a hydraulic cylinder (20) is fixed on the upper surface of the pad (19), and an output end of the hydraulic cylinder (20) is fixedly connected to the lower surface of the top plate (8).

4. The profile end welding device according to claim 3, characterized in that: The first gear (22) is meshed with the rack (23), the servo motor (24) is slidably arranged on the outer surface of the top plate (8), the other end of the rotating shaft (21) is sleeved with a connecting plate (25), the bottom end of the connecting plate (25) is fixed to the upper surface of the mounting seat (10), and the lower surface of the top plate (8) is provided with a sliding cavity (26) for the connecting plate (25) to slide.

5. The profile end welding device according to claim 4, characterized in that: A side plate (27) is welded to the lower surface of the top plate (8), and a second wavy chute (28) having the same trajectory as the first wavy chute (9) is opened on the side plate (27); a convex column (29) is welded to the outer surface of the mounting seat (10), and the convex column (29) is slidably arranged in the second wavy chute (28).

6. The profile end welding device according to claim 5, characterized in that: The lower surface of the mounting seat (10) is provided with a groove (30), a slide plate (31) is slidably connected in the groove (30), the welding gun (11) is fixedly mounted on the lower surface of the slide plate (31), the interior of the mounting seat (10) is provided with a movable groove (32), a first tooth plate (33) is slidably arranged in the movable groove (32), and the slide plate (31) slides in the groove (30) by moving up and down through the first tooth plate (33).

7. The profile end welding device according to claim 6, characterized in that: A sliding rod (34) is fixed on the upper surface of the first tooth plate (33), and the sliding rod (34) is slidably arranged in the sliding cavity (26). A sawtooth sliding groove (35) is opened on the inner wall of the sliding cavity (26). A sliding protrusion (36) is fixed on the end of the sliding rod (34), and the sliding protrusion (36) is slidably arranged in the sawtooth sliding groove (35).

8. The profile end welding device according to claim 7, characterized in that: A rotation groove (37) is provided inside the mounting seat (10), and a second gear (38) and a third gear (39) are rotatably arranged inside the rotation groove (37) and mesh with each other, one side of the second gear (38) meshes with the first tooth plate (33), and a second tooth plate (40) is fixed on the upper surface of the slide plate (31), and the second tooth plate (40) meshes with the third gear (39).

9. The profile end welding device according to claim 8, characterized in that: A limiting rod (41) is fixed on the outer surface of the slide plate (31), a limiting sliding groove (42) is provided on the mounting seat (10), and the limiting rod (41) is slidably disposed in the limiting sliding groove (42).

10. The profile end welding device according to claim 9, characterized in that: The limiting sliding groove (42), the sliding plate (31), the second tooth plate (40) and the groove (30) are all arranged as an arc-shaped structure with the welding head of the welding gun (11) as the center of the circle.

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