Laser welding device for membrane structure shed production

Abstract

The invention relates to the technical field of laser welding, in particular to a laser welding device for membrane structure shed production, which comprises a frame body, a plate adding mechanism, a plate pushing mechanism, an inclined synchronizing mechanism and an inclined plate placing mechanism, welding brackets are fixedly connected to the outer walls of the two sides of the frame body, and laser welding guns are arranged on the inner walls of the two welding brackets; a beam is fixedly connected to the outer wall of the top of the frame body. The inclination angle of the steel beam body can be positioned at any time through the inclination synchronizing mechanism, meanwhile, the inclined plate placing mechanism is matched, the steel beam body can rotate to be consistent with the angle of the inclination synchronizing mechanism during plate placing, and it is guaranteed that the supporting plate can still be tightly attached to the outer wall of the steel beam body during welding in the arc-shaped range of the steel beam body; when the positioning seat is reset, the abutting rod abuts against the inclined face sliding groove, the positioning seat naturally restores to be flush with the workpiece machining push plate in the upward moving process, the device is suitable for welding of the steel beam body at any bending angle, and the welding accuracy of the supporting plate is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and particularly relates to a laser welding device for the production of membrane structure carports. Background Art

[0002] Membrane structure parking sheds, with light self-weight and good stress characteristics, have become one of the main forms of large-span space structures. The planning and construction of parking lots have become an important part of modern urban planning and will become increasingly important in future construction. A membrane structure parking shed is a spatial structure form of a building composed of a variety of high-strength thin film materials and strengthening components (steel frames, steel columns or steel cables) that generate a certain pre-tension stress inside through a certain method to form a certain spatial shape, serve as a covering structure, and can bear a certain external load.

[0003] In the prior art, there are still some deficiencies in the welding of steel beams of membrane structure carports: generally, the bottom of the steel beam is vertical and the top gradually bends. It is necessary to weld support plates at intervals on both sides of the steel beam to improve its stability. However, when welding the support plates at the bent part, it is necessary to manually find the angle so that the support plates can fit the arc of the bent steel beam, and both sides of the steel beam need to be welded. The neatness and accuracy of the welding of the support plates on both sides cannot be guaranteed. Therefore, a laser welding device for the production of membrane structure carports is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the background art and propose a laser welding device for the production of membrane structure carports.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A laser welding device for the production of membrane structure carports includes a frame body. Two driving rollers are rotatably connected to the inner wall of the frame body. A transmission belt is sleeved on the outer walls of the two driving rollers. A bearing seat is arranged on the inner side of the transmission belt and is fixedly connected to the frame body. A driving motor I is fixedly connected to the outer wall of the frame body, and the output shaft of the driving motor I is fixedly connected to one of the driving rollers. Welding brackets are fixedly connected to the outer walls on both sides of the frame body. Laser welding guns are arranged on the inner walls of the two welding brackets. Two central limit plates are fixedly connected to the outer wall of the top of the frame body. A steel beam body is arranged on the top of the transmission belt. A cross beam is fixedly connected to the outer wall of the top of the frame body. An installation rod is slidably connected to the inner wall of the cross beam. A second motor is fixedly connected to the inner wall of the installation rod, and the output shaft of the second motor is fixedly connected to a second bevel gear. It further includes: A plate adding mechanism for feeding the support plates to be welded, and the plate adding mechanism is installed on the installation rod; A push plate mechanism for cooperating with the plate adding mechanism. The support plates to be welded are placed on the steel beam body, and the push plate mechanism is installed on the plate adding mechanism; The tilt synchronization mechanism is used to fit the arc of the outer wall of the steel beam body, and the tilt synchronization mechanism is installed on the mounting rod; And the tilt plate placing mechanism can be at the same angle as the tilt synchronization mechanism when cooperating with the push plate mechanism to extend, and can return to be parallel to the cross beam when retracting, which is convenient for the plate adding mechanism to add plates. The tilt plate placing mechanism is installed on the push plate mechanism.

[0006] Preferably, the plate adding mechanism includes a threaded rod, a plate adding push plate, a first bevel gear, a connecting bracket, a support seat, a limiting rod and a slider. The first bevel gear meshes with the second bevel gear. The threaded rod is fixedly connected with the first bevel gear through a set shaft rod. The slider is threadedly connected with the threaded rod. The connecting bracket is fixedly connected with the slider. The plate adding push plate is fixedly connected with the connecting bracket. The support seat is fixedly connected with the mounting rod. The limiting rod is fixedly connected with the mounting rod. The slider is slidably connected with the limiting rod.

[0007] Preferably, the plate adding mechanism further includes a storage box, a pushing slide plate, a first spring and two guiding plates. The storage box is fixedly connected with the mounting rod. The pushing slide plate is slidably connected with the inner wall of the storage box. The first spring is fixedly connected between the pushing slide plate and the storage box. The two guiding plates are fixedly connected with the outer wall of the storage box.

[0008] Preferably, the push plate mechanism includes a positioning rod, a positioning seat, a clamping seat, a second spring, a support plate, two clamping springs and two clamping plates. The positioning seat is slidably connected with the inner wall of the support seat. The second spring is fixedly connected between the positioning seat and the mounting rod. The positioning rod is fixedly connected with the positioning seat. The clamping seat is rotatably connected with the positioning seat through a set shaft rod. The two clamping plates are slidably connected with the inner wall of the clamping seat. The two clamping plates are symmetrically distributed. The two clamping springs are respectively fixedly connected between the two clamping plates and the clamping seat. The support plate is arranged between the two clamping plates.

[0009] Preferably, the tilt synchronization mechanism includes a transmission shaft rod, an obstructive ring plate, a baffle plate, a rotating bracket and two positioning wheels. The baffle plate is fixedly connected with the mounting rod. The transmission shaft rod is rotatably connected with the mounting rod. The obstructive ring plate is fixedly connected with the transmission shaft rod. The rotating bracket is fixedly connected with the transmission shaft rod. The two positioning wheels are both rotatably connected with the rotating bracket.

[0010] Preferably, the tilt synchronization mechanism further includes a chain, a fixed rod, a first rotating shaft and two transmission gears. The fixed rod is fixedly connected with the support seat. The first rotating shaft is rotatably connected with the fixed rod. The two transmission gears are respectively fixedly connected with the transmission shaft rod and the first rotating shaft. The chain is sleeved on the outer walls of the two transmission gears.

[0011] Preferably, the tilting plate release mechanism includes a connecting rod, a reset disk, a mounting disk and two elastic ropes, the connecting rod is fixedly connected to the reset disk, the end of the connecting rod away from the reset disk is fixedly connected to the fixed rod, the mounting disk is fixedly connected to the first rotating shaft, and the two elastic ropes are fixedly connected to the mounting disk.

[0012] Preferably, the tilting plate placing mechanism also includes a second mounting plate, two resistance rods and two inclined slide grooves, the second mounting plate is fixedly connected to the clamping seat via an arranged shaft rod, the two resistance rods are distributed in a circular array, the two resistance rods are fixedly connected to the second mounting plate, the two inclined slide grooves are opened at the bottom of the reset plate, and the two inclined slide grooves are distributed in a circular array.

[0013] Preferably, two of the plate adding mechanism, the plate pushing mechanism, the tilting synchronization mechanism and the tilting plate placing mechanism are provided.

[0014] Compared with the existing technology, the present invention has the following beneficial effects: The present invention can always locate the inclination angle through the tilt synchronization mechanism, and cooperate with the tilt plate placing mechanism at the same time. When placing the plate, it can be rotated to be consistent with the angle of the tilt synchronization mechanism, ensuring that the support plate can still be close to the outer wall when welding in the arc range of the steel beam body. After welding is completed, the positioning seat will be reset through the abutment rod and the inclined slide groove, and will naturally return to a state flush with the added push plate during the upward movement. This device is suitable for welding of steel beam bodies with any bending angles, and ensures the accuracy of support plate welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the material storage box of the present invention; Figure 3 The present invention Figure 2 A schematic diagram of the partially enlarged structure at center A; Figure 4 The present invention Figure 2 A schematic diagram of the partially enlarged structure at B in the middle; Figure 5 The present invention Figure 2 A schematic diagram of the partially enlarged structure at C in the middle; Figure 6 It is a schematic diagram of the structure of the plate adding mechanism and the plate placing mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the tilt synchronization mechanism and the tilt plate placing mechanism of the present invention; Figure 8 It is a schematic diagram of the structure inside the clamping plate of the present invention; Figure 9 The present invention Figure 8 Schematic diagram of the local enlarged structure at point D in the middle.

[0016] In the figure: 1, welding bracket; 2, frame body; 3, central limiting plate; 4, steel beam body; 5, bearing seat; 6, driving roller; 7, driving belt; 8, laser welding gun; 9, storage box; 10, cross beam; 11, mounting rod; 12, first driving motor; 13, pushing slide plate; 14, positioning rod; 15, positioning seat; 16, threaded rod; 17, transmission shaft rod; 18, transmission gear; 19, chain; 20, adding part push plate; 21, blocking ring plate; 22, baffle plate; 23, rotating bracket; 24, first spring; 25, guiding plate; 26, clamping seat; 27, second spring; 28, first bevel gear; 29, second bevel gear; 30, second motor; 31, connecting bracket; 32, supporting plate; 33, connecting rod; 34, elastic cord; 35, reset disc; 36, supporting seat; 37, limiting rod; 38, fixing rod; 39, slider; 40, first rotating shaft; 41, positioning wheel; 42, clamping spring; 43, clamping plate; 44, second mounting disc; 45, resisting rod; 46, inclined chute; 47, first mounting disc; 101, adding plate mechanism; 202, push plate mechanism; 303, inclined synchronization mechanism; 404, inclined plate placing mechanism. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0019] Refer to Figure 1 - Figure 9, A laser welding device for producing a membrane structure shed, including a frame body 2. Two transmission rollers 6 are rotatably connected to the inner wall of the frame body 2. A transmission belt 7 is sleeved on the outer walls of the two transmission rollers 6. A bearing seat 5 is arranged on the inner side of the transmission belt 7, and the bearing seat 5 is fixedly connected to the frame body 2. A driving motor 12 is fixedly connected to the outer wall of the frame body 2, and the output shaft of the driving motor 12 is fixedly connected to one of the transmission rollers 6. Welding brackets 1 are fixedly connected to the outer walls on both sides of the frame body 2. Laser welding guns 8 are arranged on the inner walls of the two welding brackets 1. Two central limit plates 3 are fixedly connected to the outer wall of the top of the frame body 2. A steel beam body 4 is arranged on the top of the transmission belt 7. A cross beam 10 is fixedly connected to the outer wall of the top of the frame body 2. An installation rod 11 is slidably connected to the inner wall of the cross beam 10. A second motor 30 is fixedly connected to the inner wall of the installation rod 11, and the output shaft of the second motor 30 is fixedly connected to a second bevel gear 29. It also includes: A plate adding mechanism 101 for feeding the support plate to be welded. The plate adding mechanism 101 is installed on the installation rod 11; A push plate mechanism 202 for cooperating with the plate adding mechanism 101. The support plate to be welded is placed on the steel beam body 4. The push plate mechanism 202 is installed on the plate adding mechanism 101; An inclined synchronization mechanism 303 for conforming to the curvature of the outer wall of the steel beam body 4. The inclined synchronization mechanism 303 is installed on the installation rod 11; And an inclined plate placing mechanism 404, which can be at the same angle as the inclined synchronization mechanism 303 when the push plate mechanism 202 extends, and can return to be parallel to the cross beam 10 when retracting, facilitating the plate adding mechanism 101 to add plates. The inclined plate placing mechanism 404 is installed on the push plate mechanism 202.

[0020] Among them, the plate adding mechanism 101 includes a threaded rod 16, a plate adding push plate 20, a first bevel gear 28, a connecting bracket 31, a support seat 36, a limiting rod 37 and a slider 39. The first bevel gear 28 meshes with the second bevel gear 29. The threaded rod 16 is fixedly connected to the first bevel gear 28 through a set shaft rod. The slider 39 is threadedly connected to the threaded rod 16. The connecting bracket 31 is fixedly connected to the slider 39. The plate adding push plate 20 is fixedly connected to the connecting bracket 31. The support seat 36 is fixedly connected to the installation rod 11. The limiting rod 37 is fixedly connected to the installation rod 11. The slider 39 is slidably connected to the limiting rod 37.

[0021] Among them, the plate adding mechanism 101 further includes a storage box 9, a pushing slide plate 13, a first spring 24 and two guiding plates 25. The storage box 9 is fixedly connected to the installation rod 11. The pushing slide plate 13 is slidably connected to the inner wall of the storage box 9. The first spring 24 is fixedly connected between the pushing slide plate 13 and the storage box 9. The two guiding plates 25 are fixedly connected to the outer wall of the storage box 9.

[0022] In this embodiment, when in use, the first driving motor 12 rotates intermittently. Every time the first driving motor 12 stops, a support plate 32 is welded on both sides of the steel beam body 4. First, the steel beam body 4 is placed between two central limiting plates 3 to ensure the accurate position of the steel beam body 4. At the same time, it is set that the two positioning wheels 41 are closely attached to the outer wall of the steel beam body 4. When the positioning wheels 41 move within the vertical range of the steel beam body 4, when the first driving motor 12 stops rotating, the second motor 30 drives the second bevel gear 29 to start rotating, so that the first bevel gear 28 drives the threaded rod 16 to rotate, and the slider 39 drives the connecting bracket 31 and the adding part pushing plate 20 to move towards the direction close to the mounting rod 11. A number of support plates 32 are placed in the storage box 9. Therefore, the inclined surface of the adding part pushing plate 20 will push the first support plate 32 into the space between the two clamping plates 43 in the clamping seat 26, and it is elastically clamped by the two clamping springs 42.

[0023] Among them, the pushing plate mechanism 202 includes a positioning rod 14, a positioning seat 15, a clamping seat 26, a second spring 27, a support plate 32, two clamping springs 42 and two clamping plates 43. The positioning seat 15 is slidably connected to the inner wall of the support seat 36. The second spring 27 is fixedly connected between the positioning seat 15 and the mounting rod 11. The positioning rod 14 is fixedly connected to the positioning seat 15. The clamping seat 26 is rotatably connected to the positioning seat 15 through a set shaft rod. The two clamping plates 43 are slidably connected to the inner wall of the clamping seat 26. The two clamping plates 43 are symmetrically distributed. The two clamping springs 42 are respectively fixedly connected between the two clamping plates 43 and the clamping seat 26. The support plate 32 is arranged between the two clamping plates 43.

[0024] In this embodiment, subsequently, the slider 39 moves down to above the positioning seat 15 and presses down the positioning seat 15, so that the positioning seat 15 drives the clamping seat 26 and the clamped support plate 32 to be closely attached to the outer wall of the steel beam body 4 through the positioning rod 14. At this time, the support plate 32 is welded on both sides of the steel beam body 4 by using the laser welding gun 8, and there is no need to manually align the support plate 32. Subsequently, the second motor 30 rotates in reverse to reset the device, waits for the next stop of the first driving motor 12, and welds a new support plate 32 again. The first spring 24 in the storage box 9 will push the next support plate 32 in.

[0025] Among them, the inclined synchronous mechanism 303 includes a transmission shaft rod 17, a blocking ring plate 21, a baffle plate 22, a rotating bracket 23 and two positioning wheels 41. The baffle plate 22 is fixedly connected to the mounting rod 11. The transmission shaft rod 17 is rotatably connected to the mounting rod 11. The blocking ring plate 21 is fixedly connected to the transmission shaft rod 17. The rotating bracket 23 is fixedly connected to the transmission shaft rod 17. The two positioning wheels 41 are both rotatably connected to the rotating bracket 23.

[0026] Among them, the tilt synchronization mechanism 303 also includes a chain 19, a fixed rod 38, a first rotating shaft 40 and two transmission gears 18. The fixed rod 38 is fixedly connected to the support seat 36, the first rotating shaft 40 is rotationally connected to the fixed rod 38, and the two transmission gears 18 are respectively fixedly connected to the transmission shaft 17 and the first rotating shaft 40. The chain 19 is sleeved on the outer walls of the two transmission gears 18.

[0027] In this embodiment, when the steel beam body 4 is moved to the arc range, the blocking ring plate 21 on the rotating bracket 23 is blocked by the baffle plate 22, so the two positioning wheels 41 are squeezed by the outer wall of the steel beam body 4 and naturally move as shown in FIG. Figure 4 As shown, it rotates counterclockwise, and the supporting mounting rod 11 will move up accordingly. At this time, the two positioning wheels 41 are still close to the steel beam body 4. At this time, the rotating bracket 23 drives the first rotating shaft 40 to move through the transmission shaft 17, the transmission gear 18 and the chain 19, and the first rotating shaft 40 drives the mounting plate 47 to move.

[0028] Among them, the tilting plate release mechanism 404 includes a connecting rod 33, a reset disk 35, a mounting disk 47 and two elastic ropes 34. The connecting rod 33 is fixedly connected to the reset disk 35, and the end of the connecting rod 33 away from the reset disk 35 is fixedly connected to the fixing rod 38. The mounting disk 47 is fixedly connected to the first rotating shaft 40, and the two elastic ropes 34 are both fixedly connected to the mounting disk 47.

[0029] Among them, the tilting plate release mechanism 404 also includes a mounting plate 24, two resistance rods 45 and two inclined slide grooves 46. The mounting plate 24 is fixedly connected to the clamping seat 26 through a set shaft rod, and the two resistance rods 45 are distributed in a circular array. The two resistance rods 45 are fixedly connected to the mounting plate 24, and the two inclined slide grooves 46 are opened at the bottom of the reset plate 35, and the two inclined slide grooves 46 are distributed in a circular array.

[0030] There are two plate adding mechanisms 101, two plate pushing mechanisms 202, two tilting synchronization mechanisms 303 and two tilting plate placing mechanisms 404.

[0031] In this embodiment, after the push plate 20 pushes the support plate 32 into the clamping seat 26 again, when the positioning seat 15 moves in the direction close to the rotating bracket 23, since the mounting plate 1 47 is already in the same rotation direction as the arc range of the steel beam body 4 at this time, when the contact rod 45 is freed from the restriction of the inclined slide groove 46 and moves down a certain distance, the two elastic ropes 34 will be stretched. Due to the elastic force of the two elastic ropes 34, the reset plate 35 and the mounting plate 1 47 will gradually be pulled to the same angle by the elastic ropes 34, so that the two sides of the support plate 32 at this time The outer wall can still fit the outer wall of the steel beam body 4. After welding is completed, the positioning seat 15 moves up, and the elastic rope 34 is gradually not stretched and becomes relaxed. Since the inclined slide groove 46 is inclined, no matter what the rotation angle of the mounting plate 24 is, as long as the resistance rod 45 is in resistance with the inclined slide groove 46, it will naturally return to a state flush with the adding push plate 20 during the upward movement, so that the next time the adding push plate 20 pushes the support plate 32 into the clamping seat 26, this device is suitable for welding of steel beam bodies 4 with any bending angles, ensuring the accuracy of the welding of the support plate 32.

[0032] The specific working principle and method of use of the present invention are explained in detail below: when in use, the driving motor 12 rotates intermittently. Once the driving motor 12 stops, a support plate 32 is welded on both sides of the steel beam body 4. First, the steel beam body 4 is placed between the two center limit plates 3 to ensure the accurate position of the steel beam body 4. At the same time, the two positioning wheels 41 are set to be close to the outer wall of the steel beam body 4. When the positioning wheel 41 moves along the vertical range of the steel beam body 4, when the driving motor 12 stops rotating, the second motor 30 drives the second bevel gear 29 to start rotating, so that the first bevel gear 28 drives the threaded rod 16 to rotate, and the slider 39 drives the connecting bracket 31 and the adding piece pushing plate 20 to move in the direction close to the mounting rod 11. A plurality of support plates 32 are placed in the storage box 9, so the inclined surface of the adding piece pushing plate 20 will push the first support plate 32 into between the two clamping plates 43 in the clamping seat 26, so that it is elastically clamped by the two clamping springs 42.

[0033] Then the slider 39 moves down to the top of the positioning seat 15, and presses the positioning seat 15 downward, so that the positioning seat 15 drives the clamping seat 26 and the clamped support plate 32 to be in close contact with the outer wall of the steel beam body 4 through the positioning rod 14. At this time, the laser welding gun 8 is used to weld the support plate 32 to both sides of the steel beam body 4, and there is no need to manually align the support plate 32. Then the second motor 30 is reversed to reset the device, and wait for the next stop of the driving motor 12, and a new support plate 32 is welded again, and the first spring 24 in the storage box 9 will push the next support plate 32 in.

[0034] When the steel beam body 4 is moved to the arc range, the blocking ring plate 21 on the rotating bracket 23 is blocked by the baffle plate 22, so the two positioning wheels 41 are squeezed by the outer wall of the steel beam body 4 and naturally move as shown in FIG. Figure 4 As shown, it rotates counterclockwise, and the supporting mounting rod 11 will move up accordingly. At this time, the two positioning wheels 41 are still close to the steel beam body 4. At this time, the rotating bracket 23 drives the first rotating shaft 40 to move through the transmission shaft 17, the transmission gear 18 and the chain 19, and the first rotating shaft 40 drives the mounting plate 47 to move.

[0035] When the push plate 20 pushes the support plate 32 into the clamping seat 26 again, the positioning seat 15 moves in the direction close to the rotating bracket 23. Since the mounting plate 1 47 is already in the same rotation direction as the arc range of the steel beam body 4 at this time, when the contact rod 45 is freed from the restriction of the inclined slide groove 46 and moves down a certain distance, the two elastic ropes 34 will be stretched. Due to the elastic force of the two elastic ropes 34, the reset plate 35 and the mounting plate 1 47 will gradually be pulled to the same angle by the elastic ropes 34, so that the outer walls of the two sides of the support plate 32 are aligned with each other. The old one can fit the outer wall of the steel beam body 4. After welding is completed, the positioning seat 15 moves up, and the elastic rope 34 is gradually not stretched and becomes relaxed. Since the inclined slide groove 46 is inclined, no matter what the rotation angle of the mounting plate 44 is, as long as the resistance rod 45 is in resistance with the inclined slide groove 46, it will naturally return to a state flush with the adding piece pushing plate 20 during the upward movement, so that the next time the adding piece pushing plate 20 pushes the support plate 32 into the clamping seat 26, this device is suitable for the welding of the steel beam body 4 with any bending angle, and ensures the accuracy of the welding of the support plate 32.

[0036] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser welding device for producing a membrane structure shed, comprising a frame body (2). Two driving rollers (6) are rotatably connected to the inner wall of the frame body (2). A transmission belt (7) is sleeved on the outer walls of the two driving rollers (6). A bearing seat (5) is arranged on the inner side of the transmission belt (7), and the bearing seat (5) is fixedly connected to the frame body (2). A first driving motor (12) is fixedly connected to the outer wall of the frame body (2), and the output shaft of the first driving motor (12) is fixedly connected to one of the driving rollers (6). Welding brackets (1) are fixedly connected to the outer walls on both sides of the frame body (2), and laser welding guns (8) are arranged on the inner walls of the two welding brackets (1). Two central limiting plates (3) are fixedly connected to the top outer wall of the frame body (2). A steel beam body (4) is arranged on the top of the transmission belt (7). A cross beam (10) is fixedly connected to the top outer wall of the frame body (2). An installation rod (11) is slidably connected to the inner wall of the cross beam (10). A second motor (30) is fixedly connected to the inner wall of the installation rod (11), and the output shaft of the second motor (30) is fixedly connected to a second bevel gear (29). It is characterized in that, It further includes: A plate adding mechanism (101) for feeding the support plate to be welded. The plate adding mechanism (101) is installed on the installation rod (11); A push plate mechanism (202) for cooperating with the plate adding mechanism (101). The support plate to be welded is placed on the steel beam body (4). The push plate mechanism (202) is installed on the plate adding mechanism (101); An inclined synchronization mechanism (303) for conforming to the curvature of the outer wall of the steel beam body (4). The inclined synchronization mechanism (303) is installed on the installation rod (11); And an inclined plate placing mechanism (404) which can be at the same angle as the inclined synchronization mechanism (303) when cooperating with the extension of the push plate mechanism (202), and can return to be parallel to the cross beam (10) when retracting, facilitating the plate adding by the plate adding mechanism (101). The inclined plate placing mechanism (404) is installed on the push plate mechanism (202).

2. The laser welding device for producing a membrane structure shed according to claim 1, wherein: The plate adding mechanism (101) includes a threaded rod (16), a plate adding push plate (20), a first bevel gear (28), a connecting bracket (31), a support seat (36), a limiting rod (37) and a slider (39). The first bevel gear (28) meshes with the second bevel gear (29). The threaded rod (16) is fixedly connected to the first bevel gear (28) through a set shaft rod. The slider (39) is threadedly connected to the threaded rod (16). The connecting bracket (31) is fixedly connected to the slider (39). The plate adding push plate (20) is fixedly connected to the connecting bracket (31). The support seat (36) is fixedly connected to the installation rod (11). The limiting rod (37) is fixedly connected to the installation rod (11). The slider (39) is slidably connected to the limiting rod (37).

3. The laser welding device for producing a membrane structure shed according to claim 2, characterized in that: The plate adding mechanism (101) further includes a storage box (9), a pushing slide plate (13), a first spring (24) and two guiding plates (25). The storage box (9) is fixedly connected to the installation rod (11). The pushing slide plate (13) is slidably connected to the inner wall of the storage box (9). The first spring (24) is fixedly connected between the pushing slide plate (13) and the storage box (9). The two guiding plates (25) are fixedly connected to the outer wall of the storage box (9).

4. A laser welding device for producing a membrane structure shed according to claim 3, characterized in that: The push plate mechanism (202) includes a positioning rod (14), a positioning seat (15), a clamping seat (26), a second spring (27), a support plate (32), two clamping springs (42) and two clamping plates (43). The positioning seat (15) is slidably connected to the inner wall of the support seat (36). The second spring (27) is fixedly connected between the positioning seat (15) and the installation rod (11). The positioning rod (14) is fixedly connected to the positioning seat (15). The clamping seat (26) is rotatably connected to the positioning seat (15) through a set shaft rod. The two clamping plates (43) are slidably connected to the inner wall of the clamping seat (26). The two clamping plates (43) are symmetrically distributed. The two clamping springs (42) are respectively fixedly connected between the two clamping plates (43) and the clamping seat (26). The support plate (32) is arranged between the two clamping plates (43).

5. A laser welding device for producing a membrane structure shed according to claim 4, characterized in that: The tilt synchronization mechanism (303) comprises a transmission shaft (17), an obstruction ring plate (21), a baffle (22), a rotating bracket (23) and two positioning wheels (41), wherein the baffle (22) is fixedly connected to the mounting rod (11), the transmission shaft (17) is rotationally connected to the mounting rod (11), the obstruction ring plate (21) is fixedly connected to the transmission shaft (17), the rotating bracket (23) is fixedly connected to the transmission shaft (17), and the two positioning wheels (41) are rotationally connected to the rotating bracket (23).

6. A laser welding device for producing a membrane structure shed according to claim 5, characterized in that: The tilt synchronization mechanism (303) further comprises a chain (19), a fixed rod (38), a first rotating shaft (40) and two transmission gears (18); the fixed rod (38) is fixedly connected to the support seat (36); the first rotating shaft (40) is rotationally connected to the fixed rod (38); the two transmission gears (18) are respectively fixedly connected to the transmission shaft (17) and the first rotating shaft (40); and the chain (19) is sleeved on the outer walls of the two transmission gears (18).

7. A laser welding device for producing a membrane structure shed, according to claim 6, characterized in that: The tilting plate placing mechanism (404) comprises a connecting rod (33), a reset disk (35), a mounting disk (47) and two elastic ropes (34); the connecting rod (33) is fixedly connected to the reset disk (35); one end of the connecting rod (33) away from the reset disk (35) is fixedly connected to a fixing rod (38); the mounting disk (47) is fixedly connected to a first rotating shaft (40); and the two elastic ropes (34) are fixedly connected to the mounting disk (47).

8. A laser welding device for producing a membrane structure shed, according to claim 7, characterized in that: The tilting plate placing mechanism (404) further comprises a second mounting plate (44), two abutting rods (45) and two inclined sliding grooves (46); the second mounting plate (44) is fixedly connected to the clamping seat (26) via a provided shaft rod; the two abutting rods (45) are distributed in a circular array; the two abutting rods (45) are fixedly connected to the second mounting plate (44); the two inclined sliding grooves (46) are provided at the bottom of the reset plate (35); and the two inclined sliding grooves (46) are distributed in a circular array.

9. A laser welding device for producing a membrane structure shed according to claim 8, characterized in that: The plate adding mechanism (101), the plate pushing mechanism (202), the tilting synchronization mechanism (303) and the tilting plate placing mechanism (404) are each provided with two.

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