Automatic electric arc welding device for safety rigging accessories

Abstract

The invention discloses an automatic electric arc welding device for safety rigging accessories, and particularly relates to the field of safety rigging accessory machining.The automatic electric arc welding device comprises a box body, a workbench is connected to the upper end of the box body, a frame is connected to the upper end of the workbench, welding equipment is connected to one side of the upper end of the workbench, and a moving assembly is connected to the upper portion of one side of the box body; a welding supporting plate is connected to the upper end of the moving assembly, a connecting sliding rail is connected to the upper end of the inner wall of the frame body, electric control sliding blocks are evenly and slidably connected to the two sides of the lower end of the connecting sliding rail, and workpiece positioning mechanisms are connected to the lower ends of the two electric control sliding blocks; mechanical cooperative control of accurate positioning and stable pressing in the multi-layer steel plate welding process is achieved, the problems of interlayer dislocation and welding deformation are effectively solved, and the welding quality and the production efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety rigging accessory processing, more particularly, the present application relates to a safety rigging accessory automatic electric arc welding device. BACKGROUND

[0002] In the modern industrial field, safety rigging accessories are key components to ensure the safe and stable operation of various hoisting and towing operations. Steel plate hooks are widely used in construction, port loading and unloading, mining and other scenes due to their good load-bearing capacity and reliability. The steel plate hook is usually made by stacking and welding multiple layers of steel plates after stamping. Specifically, the steel plate is first stamped into a specific shape according to the design requirements, and then the multiple layers of stamped steel plates are stacked and assembled to prepare for the subsequent welding process. In the current welding process of steel plate hooks, the traditional process usually directly stacks multiple layers of stamped steel plates on the welding table, and then manually adjusts the position of each layer of steel plates to ensure welding accuracy. This method is not only inefficient and difficult to meet the needs of large-scale production, but also has large errors in manual operation, making it difficult to ensure accurate alignment of each layer of steel plates, which can lead to misalignment, uneven gaps and other problems in the welding area. These problems can seriously affect the welding quality and reduce the overall strength and stability of the steel plate hook, thereby creating a safety hazard for the use of safety rigging. SUMMARY

[0003] To overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a safety rigging accessory automatic electric arc welding device, which ensures accurate alignment of multiple layers of workpieces by setting a workpiece positioning mechanism to solve the problems raised in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The utility model provides an automatic electric arc welding device for safety rigging fittings, including the box, the upper end of box is connected with the workstation, the upper end of workstation is connected with the frame, one side of the upper end of workstation is connected with the welding equipment, one side upper portion of box is connected with moving assembly, the upper end of moving assembly is connected with the welding support plate, the inner wall upper end of frame is connected with the connecting slide rail, the lower end of both sides of connecting slide rail is evenly connected with the electric control sliding block, the lower end of two electric control sliding blocks is connected with workpiece positioning mechanism, workpiece positioning mechanism includes cylinder and retractable mechanism, the lower end of cylinder is connected with moving plate, the upper end of cylinder is connected with the lower end of electric control sliding block, the lower end of moving plate is evenly connected with the electromagnetic block, the both sides of moving plate of one workpiece positioning mechanism are connected with the connecting plate, the shape of one side of connecting plate is half arc structure, the lower end of connecting plate is evenly rotatably connected with the guide roller, the shape of a plurality of guide rollers is arc structure, workpiece positioning mechanism can stack a plurality of workpieces on the upper side of welding support plate, one side of the middle part of workstation is connected with the pressing mechanism, and the pressing mechanism can press the workpiece stacked in multiple layers.

[0005] Preferably, the moving assembly includes a lead screw, one end of the lead screw extends through to one side of the box, one side of the box corresponding to one end of the lead screw is connected with a moving motor, the output end of the moving motor is connected with one end of the lead screw, the inner wall of the box corresponding to one side of the lead screw is connected with a sliding rod, the outer wall of the lead screw and the outer wall of the sliding rod are both slidingly connected with guide blocks, a moving frame is connected between the two guide blocks, a drive motor is connected to the inner wall of the moving frame at the lower middle part, the output end of the drive motor extends through to the upper end of the moving frame and is connected with a housing.

[0006] Preferably, the lower middle part of the inner wall of the housing is connected with a hydraulic cylinder, the upper end of the hydraulic cylinder extends through to the upper end of the housing, the upper end of the hydraulic cylinder is connected with the lower middle part of the welding support plate, a sliding groove is formed in the upper end of the box and the upper end of the workstation corresponding to the housing, and the housing is slidingly connected inside the sliding groove.

[0007] Preferably, the retractable mechanism includes a connecting motor, the output end of the connecting motor extends through to the lower end of the cylinder, the output end of the connecting motor is connected with a first bevel gear, the lower end of the cylinder is connected with a plurality of connecting blocks, the number of connecting blocks is four groups, a plurality of connecting blocks are rotatably connected with winding rollers at the middle part of one side.

[0008] Preferably, a plurality of winding ropes are wound around the middle part of the outer wall of the winding roller, a plurality of winding ropes are connected with the lower end of the moving plate, a second bevel gear is connected with the outer wall of the winding roller, and a plurality of second bevel gears are connected with the lower end of the first bevel gear in a circumferential meshing manner.

[0009] Preferably, the pressing mechanism comprises a moving slide rail, one side of the moving slide rail is slidably connected with a moving block, the upper middle part of the moving block is connected with a connecting frame, the inner wall lower middle part of the connecting frame is connected with a first air cylinder, the upper end of the first air cylinder is connected with a box body, and one end of the box body extends through to one side of the connecting frame.

[0010] Preferably, the inside one side middle part of the box body is connected with a second air cylinder, one end of the second air cylinder extends through to one side of the box body, one end of the second air cylinder is connected with a stabilizing block, the upper part of one side of the box body is rotatably connected with a first stabilizing rod, one end of the first stabilizing rod is connected with a second stabilizing rod, both ends of the second stabilizing rod are connected with rotating blocks, and the lower ends of the two rotating blocks are connected with the upper end of the stabilizing block.

[0011] Preferably, the lower end of the stabilizing block is rotatably connected with a connecting shell, the inner wall lower part of both sides of the connecting shell is connected with a double-shaft motor, both ends of the double-shaft motor extend through to both sides of the connecting shell, the upper part of both sides of the connecting shell is rotatably connected with an adjusting rod, the lower end of the adjusting rod is connected with a pressing block, the middle part of one side of the two adjusting rods is rotatably connected with a rotating seat, and one end of the two rotating seats is respectively connected with both ends of the double-shaft motor.

[0012] Preferably, the middle part of both sides of the frame body is provided with an opening, and the inner wall of both sides of the two openings is connected with a conveying belt.

[0013] The technical effects and advantages of the present application are as follows: 1. The workpiece positioning mechanism is driven by a motor and a gear transmission system, realizes layer-by-layer grabbing and precise positioning of multiple steel plates, is provided with an adjustable guide device and a limiting mechanism, can ensure that each layer of steel plate maintains consistent position during stacking, effectively solves the misalignment problem that easily occurs during traditional manual stacking, and provides flat and reliable steel plate combination for subsequent welding process; 2. The pressing mechanism adopts a mechanical structure design of multiple connecting rods cooperating with air cylinder driving, converts linear motion of the air cylinder into stable pressing force, ensures uniform and reliable pressure transmission, and through an adjustable pressing block and a regional pressure adjusting mechanism, can manually adjust the pressing force of each region through a mechanical adjusting device according to the needs of different welding positions. This structure not only ensures the overall stability of the multiple steel plates during welding, but also can appropriately control the pressure of the joint area, effectively avoiding the welding deformation problem caused by excessive pressure; 3. The workpiece positioning mechanism and the pressing mechanism work cooperatively through a mechanical linkage device, form a complete welding auxiliary system, the positioning mechanism first accurately positions and stacks multiple steel plates layer by layer, and the pressing mechanism then applies appropriate pressure to the steel plate combination. The two realize accurate cooperation of actions through a transmission device, effectively solve the common problems of interlayer misalignment and welding deformation in traditional welding, make the welding joint of multiple steel plates more uniform and firm, and significantly improve the welding quality and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the schematic diagram of the overall structure of the device; Figure 2 It is the sectional view of the pressing mechanism; Figure 3 It is the overall sectional view of the device; Figure 4 It is the sectional view of the local structure of the second bevel gear; Figure 5 It is the schematic diagram of the three-dimensional structure of the workpiece positioning mechanism; Figure 6 It is the schematic diagram of the mounting structure of the guide roller; Figure 7 It is the sectional view of the workpiece positioning mechanism; Figure 8 It is the schematic diagram of the three-dimensional structure of the pressing assembly; Figure 9 It is the schematic diagram of the mounting structure of the double-shaft motor.

[0015] The figure marks are as follows: 1, box body; 2, workbench; 3, frame body; 4, welding equipment; 5, screw rod; 6, moving frame; 7, driving motor; 8, shell; 9, hydraulic cylinder; 10, welding support plate; 11, opening; 12, conveying belt; 13, connecting slide rail; 14, electric control sliding block; 15, cylinder body; 16, connecting motor; 17, first bevel gear; 18, connecting block; 19, winding roller; 20, winding rope; 21, second bevel gear; 22, moving plate; 23, electromagnetic block; 24, connecting plate; 25, guide roller; 26, moving slide rail; 27, moving block; 28, connecting frame; 29, first air cylinder; 30, box body; 31, second air cylinder; 32, stabilizing block; 33, connecting shell; 34, double-shaft motor; 35, adjusting rod; 36, pressing block; 37, first stabilizing rod; 38, second stabilizing rod; 39, rotating block. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0017] Referring to the drawings in the description Figures 1-9As shown, the automatic electric arc welding device for a safety rigging accessory of the embodiment of the present application comprises a box body 1, the upper end of the box body 1 is connected with a workbench 2, the upper end of the workbench 2 is connected with a frame body 3, one side of the upper end of the workbench 2 is connected with a welding device 4, one side of the upper part of the box body 1 is connected with a moving assembly, the upper end of the moving assembly is connected with a welding supporting plate 10, the middle part of the two sides of the frame body 3 is provided with an opening 11, the inner wall of the two openings 11 is connected with a conveying belt 12 on both sides, the inner wall of the upper end of the frame body 3 is connected with a connecting sliding rail 13, the lower end of the connecting sliding rail 13 is uniformly connected with an electric control sliding block 14 on both sides, the lower end of the two electric control sliding blocks 14 is connected with a workpiece positioning mechanism; The frame body 3 is convenient to disassemble and maintain, and simultaneously plays a role of protection and safety isolation, the welding device 4 is a six-axis electric arc welding robot, the welding robot adopts a six-axis linkage structure, is equipped with an intelligent welding control system, and can realize automatic switching of multiple electric arc welding processes, and the two conveying belts 12 can form a complete material conveying channel, which is convenient for workpiece feeding and discharging.

[0018] As shown in the figure, Figure 2 With Figure 3 As shown, the moving assembly comprises a lead screw 5, one end of the lead screw 5 extends through to one side of the box body 1, the side of the box body 1 corresponding to one end of the lead screw 5 is connected with a moving motor, the output end of the moving motor is connected with one end of the lead screw 5, the inner wall of the box body 1 corresponding to one side of the lead screw 5 is connected with a sliding rod, the outer wall of the lead screw 5 and the outer wall of the sliding rod are both connected with a guide block, the two guide blocks are connected with a moving frame 6, the inner wall of the moving frame 6 is connected with a driving motor 7 at the lower end of the middle part, the output end of the driving motor 7 extends through to the upper end of the moving frame 6 and is connected with a shell 8, the inner wall of the shell 8 is connected with a hydraulic cylinder 9 at the lower end of the middle part, the upper end of the hydraulic cylinder 9 extends through to the upper end of the shell 8, the upper end of the hydraulic cylinder 9 is connected with the lower end of the middle part of the welding supporting plate 10, the upper end of the box body 1 and the upper end of the workbench 2 are provided with a sliding groove at the position of the shell 8, and the shell 8 is connected with the sliding groove in a sliding manner; The driving motor 7 can steplessly adjust the rotating speed according to the welding process requirement, the hydraulic cylinder 9 is equipped with a pressure sensor and a displacement sensor, the precise lifting control of the welding supporting plate 10 is realized, the sliding groove provided on the upper end of the box body 1 and the upper end of the workbench 2 can ensure the stability and guiding accuracy in the moving process, the welding supporting plate 10 is connected with a workpiece scanning positioning system above, the positions of multiple steel plate hooks placed can be determined, when the workpiece positioning mechanism moves the steel plate hook to above the welding supporting plate 10, the position of the steel plate hook is positioned through the workpiece scanning positioning system, then the angle position of the welding supporting plate 10 is adjusted through the driving motor 7, and the positions of the two steel plate hooks are ensured to coincide.

[0019] As shown in the figure, Figures 4-7As shown, the workpiece positioning mechanism includes a cylinder 15 and a retractable mechanism, the cylinder 15 is connected with a moving plate 22 below, the upper end of the cylinder 15 is connected with the lower end of the electric control slider 14, the lower end of the moving plate 22 is uniformly connected with an electromagnetic block 23, the moving plate 22 of one of the workpiece positioning mechanisms is connected with a connecting plate 24 on both sides, one side of the connecting plate 24 is arranged in a semicircular structure, the lower end of the connecting plate 24 is uniformly connected with a guide roller 25 on one side, the shapes of the plurality of guide rollers 25 are arranged in an arc structure, the workpiece positioning mechanism can stack multiple workpieces on the welding support plate 10 in turn, the middle of one side of the workbench 2 is connected with a pressing mechanism, the pressing mechanism can press the multiple stacked workpieces, the retractable mechanism includes a connecting motor 16, the output end of the connecting motor 16 extends through to the lower end of the cylinder 15, the output end of the connecting motor 16 is connected with a first bevel gear 17, the lower end of the cylinder 15 is connected with a connecting block 18 in the circumference, the number of the connecting block 18 is four groups, a plurality of connecting blocks 18 are rotatably connected with a winding roller 19 on one side of the middle, a plurality of winding ropes 20 are wound and connected on the outer wall of the winding roller 19, the lower end of the plurality of winding ropes 20 is connected with the lower end of the moving plate 22, the outer wall of the winding roller 19 is connected with a second bevel gear 21 on one side, the upper ends of the plurality of second bevel gears 21 are respectively connected with the lower ends of the first bevel gears 17 in the circumference; The upper end of the cylinder 15 is connected with the lower end of the electric control slider 14 through a flange, which ensures the connection rigidity and positioning accuracy, the upper end of the moving plate 22 is connected with a power module, which accurately controls the on-off of the electromagnetic block 23, the guide roller 25 can ensure the stability of the contact with the edge of the welding support plate 10, and the retractable mechanism can realize accurate length control of the plurality of winding ropes 20; The workpiece positioning mechanism realizes accurate positioning through a bevel gear transmission system, the connecting motor 16 drives the first bevel gear 17 to rotate, which synchronously drives the four winding rollers 19 to rotate through meshing with the four circumferentially arranged second bevel gears 21, this symmetrical transmission design ensures the stability of the moving plate 22 during lifting, avoiding the deflection problem caused by single-sided stress, at the same time, the arc-shaped connecting plate 24 and the guide roller 25 constitute a passive centering mechanism, when the moving plate 22 descends, the guide roller 25 contacts the edge of the welding support plate 10 to generate a self-correcting force, which automatically adjusts the workpiece to the preset position.

[0020] As Figure 8 With Figure 9As shown, the pressing mechanism includes a moving slide rail 26, one side of the moving slide rail 26 is slidingly connected with a moving block 27, the upper end of the moving block 27 is connected with a connecting frame 28 in the middle, the inner wall of the connecting frame 28 is connected with a first air cylinder 29 in the middle of the lower end, the upper end of the first air cylinder 29 is connected with a box body 30, one end of the box body 30 extends through to one side of the connecting frame 28, the inside of the box body 30 is connected with a second air cylinder 31 in the middle of one side, one end of the second air cylinder 31 extends through to one side of the box body 30, one end of the second air cylinder 31 is connected with a stabilizing block 32, the upper part of one side of the box body 30 is rotatably connected with a first stabilizing rod 37, one end of the first stabilizing rod 37 is connected with a second stabilizing rod 38, the two ends of the second stabilizing rod 38 are both connected with a rotating block 39, the lower ends of the two rotating blocks 39 are connected with the upper end of the stabilizing block 32, the lower end of the stabilizing block 32 is rotatably connected with a connecting shell 33, the inner wall of the connecting shell 33 is connected with a double-shaft motor 34 in the lower part of both sides, the two ends of the double-shaft motor 34 extend through to both sides of the connecting shell 33 respectively, the upper part of both sides of the connecting shell 33 is rotatably connected with an adjusting rod 35, the lower end of the adjusting rod 35 is connected with a lower pressing block 36, the middle of one side of the two adjusting rods 35 is rotatably connected with a rotating seat, one end of the two rotating seats is connected with the two ends of the double-shaft motor 34 respectively; The moving slide rail 26 is an electric control slide rail, the moving block 27 is located on the outer wall of the moving slide rail 26 and can quickly move the lower pressing block 36 above the welding station, the position of the lower pressing block 36 can be controlled by the double-shaft motor 34, the box body 30 is driven to descend by the first air cylinder 29, the stabilizing block 32 is horizontally moved by the second air cylinder 31, the double-linkage constraint structure of the first stabilizing rod 37 and the second stabilizing rod 38 effectively improves the movement stability of the stabilizing block 32, and ensures that the stabilizing block 32 maintains accurate axial positioning and reliable lateral rigidity during the welding process.

[0021] Working principle: in use, the steel plate hook workpiece to be welded is conveyed into the inside of the frame body 3 through the left conveying belt 12, the left workpiece positioning mechanism is started, the connecting motor 16 drives the first bevel gear 17 to rotate, drives the winding roller 19 to rotate to release the winding rope 20 through the meshing with the second bevel gear 21, so that the moving plate 22 descends to the appropriate position, at this time the electromagnetic block 23 is electrified, and the steel plate hook workpiece completed by stamping is firmly adsorbed; After adsorption is completed, the winding roller 19 starts to rotate in the reverse direction, uniformly and stably winds the winding rope 20, and by virtue of the traction of the winding rope 20, the moving plate 22 and the workpiece adsorbed thereon are stably lifted, at the same time, the electric control sliding block 14 accurately slides on the connecting slide rail 13 according to the preset program, and moves the whole workpiece positioning mechanism to the direction of the welding supporting plate 10; When the workpiece positioning mechanism moves to the appropriate position above the welding pallet 10, the workpiece scanning positioning system connected above the welding pallet 10 starts to work to scan and position the surface of the welding pallet 10. At this time, the semi-arc connecting plates 24 connected to the two sides of the moving plate 22 drive the guide rollers 25 to gradually approach the welding pallet 10, and the guide rollers 25 form a guide constraint with the edge of the welding pallet 10 to fine-tune the position of the workpiece. The workpiece scanning positioning system monitors the position information of the steel plate hook in real time, and the driving motor 7 can drive the welding pallet 10 to rotate according to the welding process requirements to accurately adjust the angular position and ensure that the steel plate hook moved above is completely overlapped with the steel plate hook already placed on the welding pallet 10; Subsequently, the winding roller 19 rotates again to appropriately release the winding rope 20, so that the moving plate 22 slowly descends until the steel plate is stably and accurately placed above the welding pallet 10. Then, the workpiece positioning mechanism moves above the conveying belt 12 again to prepare to adsorb the next steel plate hook workpiece. When the adsorption and conveying of the second steel plate hook workpiece is performed, the workpiece positioning mechanism moves above the welding pallet 10. The winding and releasing assembly controls the winding roller 19 to slowly lower the moving plate 22, and the guide rollers 25 on the two sides again adhere to the two sides of the welding pallet 10 to play a guiding and positioning role. At this time, the driving motor 7 drives the welding pallet 10 to rotate to adjust the position of the steel plate hook already placed above, so that the steel plate hook above the welding pallet 10 is in a parallel state with the steel plate hook to be placed below the positioning mechanism. Then, the winding and releasing assembly continues to lower to accurately stack the new steel plate hook above the steel plate hook already placed. This process can be repeated to stack multiple steel plate hooks in sequence. The entire stacking process does not require manual intervention and is accurate in positioning. After the stacking of the steel plate hooks is completed, the moving block 27 slides on the moving slide rail 26 to move the pressing mechanism above the welding pallet 10. By adjusting the extension of the first cylinder 29, the box body 30 is lowered, and then the second cylinder 31 is controlled to move the stabilizing block 32, which is linked with the first stabilizing rod 37, the second stabilizing rod 38, and the rotating block 39, so that the stabilizing block 32 stably reaches the specified position. The double-shaft motor 34 is started to drive the adjusting rod 35 to rotate, so that the lower pressing block 36 accurately descends above the steel plate hook to press the stacked steel plate hook. Since the connecting shell 33 is rotationally connected with the stabilizing block 32, even if the welding pallet 10 drives the steel plate hook to rotate during welding, the lower pressing block 36 will not interfere with it, ensuring that the welding work is smoothly performed. Compared with manual pressing, the device can provide more stable and uniform pressure. Finally, the welding device 4 is started, and the welding device 4 is used to automatically arc weld the compressed steel hook, after the welding is completed, the compression mechanism is loosened, the workpiece positioning mechanism on the right side is started, the connecting motor 16 drives the first bevel gear 17 to rotate, through the meshing with the second bevel gear 21, the winding roller 19 is driven to rotate to release the winding rope 20, the moving plate 22 is lowered to above the welding support plate 10, the electromagnetic block 23 is electrified to adsorb the welded steel hook workpiece, then the winding roller 19 reversely rotates to wind the winding rope 20, drives the moving plate 22 and the workpiece to rise, the electric control sliding block 14 slides on the connecting slide rail 13, moves the right workpiece positioning mechanism to above the conveying belt 12, the winding roller 19 rotates to release the winding rope 20, and the welded steel hook is stably placed on the conveying belt 12, and the finished product is conveyed to the subsequent process by the conveying belt 12.

[0022] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; Secondly: the drawings of the disclosed embodiments of the present application only involve the structures involved in the disclosed embodiments, other structures can refer to the usual design, and under the condition of no conflict, the same embodiment and different embodiments of the present application can be combined with each other; Finally: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic electric arc welding device for safety rigging fittings, comprising a box (1), characterized in that: The upper end of the box (1) is connected with a workbench (2), the upper end of the workbench (2) is connected with a frame (3), one side of the upper end of the workbench (2) is connected with a welding device (4), one side of the upper part of the box (1) is connected with a moving assembly, the upper end of the moving assembly is connected with a welding support plate (10), the inner wall of the frame (3) is connected with a connecting slide rail (13), the lower end of the connecting slide rail (13) is evenly connected with an electric control sliding block (14) on both sides, the lower end of the two electric control sliding blocks (14) is connected with a workpiece positioning mechanism, the workpiece positioning mechanism comprises a cylinder (15) and a retractable mechanism, the lower end of the cylinder (15) is connected with a moving plate (22), the upper end of the cylinder (15) is connected with the lower end of the electric control sliding block (14), the lower end of the moving plate (22) is evenly connected with an electromagnetic block (23), one side of the moving plate (22) of one of the workpiece positioning mechanisms is connected with a connecting plate (24), one side of the connecting plate (24) is arranged in a semicircular structure, the lower end of the connecting plate (24) is evenly rotatably connected with a guide roller (25), a plurality of guide rollers (25) are arranged in an arc structure; The workpiece positioning mechanism can stack multiple layers of workpieces on the welding support plate (10) in turn; One side of the middle of the workbench (2) is connected with a pressing mechanism; The pressing mechanism can press the multiple layers of stacked workpieces.

2. An apparatus for automatic electric arc welding of a safety rigging fitting according to claim 1, characterized in that: The moving assembly comprises a lead screw (5), one end of the lead screw (5) extends through to one side of the box (1), one side of the box (1) is connected with a moving motor corresponding to one end of the lead screw (5), the output end of the moving motor is connected with one end of the lead screw (5), the inner wall of the box (1) is connected with a sliding rod corresponding to one side of the lead screw (5), the outer wall of the lead screw (5) and the outer wall of the sliding rod are both slidably connected with guide blocks, a moving frame (6) is connected between the two guide blocks, a drive motor (7) is connected to the inner wall of the moving frame (6) at the lower middle, the output end of the drive motor (7) extends through to the upper end of the moving frame (6) and is connected with a housing (8).

3. An apparatus for automatic electric arc welding of a safety rigging fitting according to claim 2, characterized in that: The lower middle of the inner wall of the housing (8) is connected with a hydraulic cylinder (9), the upper end of the hydraulic cylinder (9) extends through to the upper end of the housing (8), the upper end of the hydraulic cylinder (9) is connected with the lower middle of the welding support plate (10), a sliding groove is formed in the upper end of the box (1) and the upper end of the workbench (2) corresponding to the housing (8), and the housing (8) is slidably connected inside the sliding groove.

4. An apparatus for automatic electric arc welding of safety harness fittings according to claim 1, characterized in that: The retractable mechanism comprises a connecting motor (16), the output end of the connecting motor (16) extends through to the lower end of the cylinder (15), the output end of the connecting motor (16) is connected with a first bevel gear (17), the lower end of the cylinder (15) is connected with a connecting block (18) in a circumferential direction, the number of the connecting blocks (18) is four groups, and a plurality of connecting blocks (18) are rotatably connected with a winding roller (19) on one side of the middle.

5. An apparatus for automatic electric arc welding of a safety rigging fitting according to claim 4, characterized in that: A plurality of winding rollers (19) are connected with winding ropes (20) at the middle of the outer wall, the lower ends of the winding ropes (20) are connected with the lower end of the moving plate (22), the outer wall of the winding roller (19) is connected with the second bevel gear (21), and the upper ends of the second bevel gears (21) are connected with the lower ends of the first bevel gears (17) in a circumferential meshing manner.

6. An apparatus for automatic electric arc welding of safety harness fittings according to claim 1, characterized in that: The pressing mechanism comprises a moving slide rail (26), one side of the moving slide rail (26) is slidably connected with a moving block (27), the upper end of the moving block (27) is connected with a connecting frame (28) in the middle, the inner wall of the connecting frame (28) is connected with a first air cylinder (29) in the lower middle, the upper end of the first air cylinder (29) is connected with a box body (30), and one end of the box body (30) extends through to one side of the connecting frame (28).

7. An apparatus for automatic electric arc welding of a safety rigging fitting according to claim 6, characterized in that: The inner side of the box body (30) is connected with a second air cylinder (31) in the middle, one end of the second air cylinder (31) extends through to one side of the box body (30), one end of the second air cylinder (31) is connected with a stabilizing block (32), the upper part of one side of the box body (30) is rotatably connected with a first stabilizing rod (37), one end of the first stabilizing rod (37) is connected with a second stabilizing rod (38), both ends of the second stabilizing rod (38) are connected with a rotating block (39), and the lower ends of the two rotating blocks (39) are connected with the upper end of the stabilizing block (32).

8. An apparatus for automatic electric arc welding of a safety rigging fitting according to claim 7, characterized in that: The lower end of the stabilizing block (32) is rotatably connected with a connecting shell (33), the inner wall of the connecting shell (33) is connected with a double-shaft motor (34) in the lower part of both sides, both ends of the double-shaft motor (34) extend through to both sides of the connecting shell (33), the upper part of both sides of the connecting shell (33) is rotatably connected with an adjusting rod (35), the lower end of the adjusting rod (35) is connected with a pressing block (36), and the middle of one side of the two adjusting rods (35) is rotatably connected with a rotating seat, and one end of the two rotating seats is respectively connected with both ends of the double-shaft motor (34).

9. An apparatus for automatic electric arc welding of a safety rigging fitting according to claim 7, characterized in that: The frame body (3) is provided with an opening (11) in the middle of both sides, and the inner wall of the two openings (11) is connected with a conveyor belt (12) on both sides.

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