Hook double-sided automatic welding device

Abstract

The application provides a hook double-sided automatic welding device, which comprises a feeding module, a welding module and a PLC control system. The feeding module comprises a work station switching assembly and two sets of tooling modules. The work station switching assembly is used to rotate and switch the positions of the two sets of tooling modules, so that one set of tooling modules corresponds to the operation position of manual feeding and discharging, and the other set of tooling modules corresponds to the position of the welding module. The tooling module comprises a first tooling module and a second tooling module. The first tooling module is used to place hooks, and the second tooling module is used to place iron plates. The welding positions of the hooks and the iron plates are aligned and attached through the position cooperation of the first tooling module and the second tooling module. A set of welding modules is arranged on each side corresponding to the position of the other set of tooling modules. The welding module comprises a moving tooling and a welding gun clamp. The welding gun clamp is installed on the moving tooling and is used to clamp and fix the welding gun.

Description

Technical Field

[0001] This application relates to the technical field of laser welding, and more particularly to an automatic double-sided welding device for hooks. Background Technology

[0002] In the existing production process of hook-type hardware, it is usually necessary to weld the two sides of the hook to achieve structural reinforcement or functional connection. Traditional welding methods mostly involve manual single-sided welding one by one, which is not only inefficient, but also the welding quality is greatly affected by the operator's skill level, and is prone to problems such as uneven weld points, cold welds, and missing welds, resulting in poor product consistency and high rework rate.

[0003] To improve welding efficiency, some companies have introduced automated welding equipment. However, most existing automated welding devices are single-sided welding structures. After completing welding on one side, the workpiece needs to be manually flipped over before welding on the other side. This operation is cumbersome, the degree of automation is not high, and it is difficult to meet the needs of large-scale and efficient production. Summary of the Invention

[0004] In view of the above practical problems and the shortcomings of the existing technology, the main technical problem to be solved by this utility model is to provide a double-sided automatic welding device for hooks, so as to realize synchronous automatic welding of hooks on both sides and improve welding efficiency.

[0005] To solve the above-mentioned technical problems, this application provides a double-sided automatic welding device for hooks, which adopts the following technical solution: A double-sided automatic welding device for hooks includes a feeding module, a welding module, and a PLC control system, wherein both the feeding module and the welding module are controlled by the PLC control system. The loading module includes a station switching component and two sets of tooling modules. The tooling modules are used to place and clamp the parts to be processed. The station switching component is used to rotate and switch the positions of the two sets of tooling modules so that one set of tooling modules corresponds to the manual loading and unloading operation position, and the other set of tooling modules corresponds to the position of the welding module. The part to be processed includes a Z-shaped hook and an iron plate welded to the hook. The tooling module includes a first tooling module and a second tooling module. The first tooling module is used to place the hook, and the second tooling module is used to place the iron plate. By matching the positions of the first tooling module and the second tooling module, the welding positions of the hook and the iron plate are aligned and fitted. A welding module is set on each of the two sides corresponding to the location of the other set of tooling modules. The welding module includes a movable tooling and a welding gun clamp. The welding gun clamp is installed on the movable tooling and is used to hold and fix the welding gun.

[0006] In a preferred embodiment, the feeding module further includes a mounting bracket, and the workstation switching component includes a drive motor and a rotating horizontal plate. The drive motor is fixed on the mounting bracket, and the output end of the drive motor is connected to the rotating horizontal plate. The drive motor drives the rotating horizontal plate to rotate in one rotation angle of 180°. The rotating horizontal plate is set horizontally, and a set of tooling modules is fixed on both sides of the rotating horizontal plate.

[0007] In a preferred embodiment, the tooling module includes a mounting base, and the first tooling module and the second tooling module are disposed on the mounting base, the mounting base being used to fix to the rotating horizontal plate.

[0008] In a preferred embodiment, the first tooling module includes a placement frame fixed to the mounting base plate for a first clamping component and a positioning block disposed on the end face of the placement frame; there is a gap between the first clamping component and the positioning block, and the Z-shaped middle portion of the hook is placed in the gap; One end of the hook with a Z-shaped bend serves as a welding edge for welding with the iron plate. When the hook is placed in the gap, the welding edge is within the clamping area of ​​the first clamping component. The first clamping component can be driven by the PLC control system to clamp and fix the welding edge on the placement frame.

[0009] In a preferred embodiment, the first clamping assembly includes a first telescopic cylinder and a clamping block fixed to the end of the first telescopic cylinder. The clamping block has a slot on the side facing the welding edge, and the slot is an inverted L-shaped slot structure. The first telescopic cylinder drives the clamping block to move in a direction toward or away from the welding edge, so that the slot can engage with the welding edge or disengage from the welding edge.

[0010] In a preferred embodiment, the second tooling module includes a second clamping component and a first limiting block fixed on the mounting base. The first limiting block is fixed to the bottom plate of the mounting base, and the second clamping component is disposed on the side plate of the mounting base. The second clamping assembly includes a clamping assembly and second limiting blocks disposed on both sides of the clamping assembly. The second limiting block includes a limiting groove disposed vertically through the clamping assembly. When the iron plate is inserted vertically from top to bottom into the two limiting slots, and the bottom of the iron plate abuts against the first limiting block, the clamping assembly can be driven to clamp the iron plate horizontally.

[0011] In a preferred embodiment, the clamping assembly includes a second telescopic cylinder and a clamping block fixed to the end of the second telescopic cylinder. The clamping block has a pressure column on the side facing the iron plate, and a pressure sensor is provided at the end of the pressure column. The second telescopic cylinder drives the pressing block to move in a direction toward or away from the iron plate, so that the pressing column presses against the iron plate or the pressing column disengages from the iron plate.

[0012] In a preferred embodiment, a window is provided on the side plate of the mounting base, and the welding position of the hook and the iron plate is located inside the window; The welding positions include a first weld and a second weld, and the welding modules set on both sides are used for welding the first weld and the second weld, respectively.

[0013] In a preferred embodiment, the welding torch is a fiber laser.

[0014] In a preferred embodiment, the movable fixture includes a linear transverse module that moves laterally and a linear lifting module that moves vertically. The linear lifting module is mounted on the linear transverse module, and the welding torch clamp is mounted on the linear lifting module. The linear lateral movement module moves laterally in the direction toward the feeding module for rapid advance and retraction of the welding torch; the linear lifting module is used to drive the welding torch along a preset trajectory to complete welding.

[0015] In summary, this application has the following beneficial effects: 1. This utility model arranges a welding module consisting of "horizontal movement + lifting" on each side of the tooling module located at the welding position. The PLC issues instructions at the same time, and the two welding guns can form the two vertical welds of the Z-shaped hook and the iron plate in one go. The welding is carried out simultaneously on both sides, and the average cycle time of a single piece is reduced from 50 seconds to 18 seconds, which is about 180% more efficient. Moreover, the heat input on both sides is symmetrical, and the deformation is ≤0.3mm.

[0016] 2. By adopting a station switching component, this utility model enables the drive motor to precisely rotate 180° each time, achieving parallel "left station loading / unloading + right station welding"; the operator only needs to complete the clamping at a fixed position and does not need to enter the welding area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the double-sided automatic welding device in this embodiment; Figure 2 This is a top view of the overall structure of the double-sided automatic welding device in this embodiment; Figure 3 This is a schematic diagram of the overall structure of the feeding module in this embodiment; Figure 4 This is a schematic diagram of the overall structure of the tooling module in this embodiment; Figure 5 This is a schematic diagram of the specific structure of the first tooling module in this embodiment; Figure 6 This is a schematic diagram of the specific structure of the second tooling module in this embodiment; Figure 7 This is a schematic diagram of the overall structure of the welding module in this embodiment; Figure 8 This is a schematic diagram of the first weld between the hook and the iron plate in this embodiment; Figure 9 This is a schematic diagram of the second weld between the hook and the iron plate in this embodiment.

[0018] Explanation of reference numerals in the attached drawings: 1. Feeding module; 11. Mounting bracket; 12. Station switching component; 121. Drive motor; 122. Rotating cross plate; 13. Tooling module; 131. Mounting base; 1311. Base plate; 1312. Side plate; 1313. Window; 132. First tooling module; 1321. Placement rack; 1322. First telescopic cylinder; 1323. Clamping block; 1324. Slot; 1325. Positioning block; 1326. Gap; 133. Second tooling module; 1331. First limiting block; 1332. Second limiting block; 1333. Limiting groove; 1334. Second telescopic cylinder; 1335. Clamping block; 1336. Pressure column; 1337. Pressure sensor; 2. Welding module; 21. Linear transverse module; 22. Linear lifting module; 23. Welding gun fixture; 3. Machine base; 4. Hook; 41. Welding edge; 42. First weld; 43. Second weld; 5. Iron plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0023] The hook 4 welding involves laser welding a metal hook 4 to another part (such as an iron plate 5, a bracket, a base, etc.) to form a whole. Typically, both sides of the contact surface between the hook 4 and the other part need to be welded to ensure a strong welded structure. Therefore, this embodiment provides a double-sided automatic hook welding device, which can be used to simultaneously complete the automatic welding of both sides of the contact surface of the hook 4.

[0024] The double-sided automatic welding device for hooks includes a feeding module 1, a welding module 2, and a PLC control system. Both the feeding module 1 and the welding module 2 are controlled by the PLC control system. Figure 2 The loading module 1 employs a dual-station switching loading system. One station moves to the welding position for welding, while the other station moves to the unloading position for unloading finished products and loading parts to be processed. The parts to be processed include Z-shaped hooks 4 and iron plates 5. The welding module 2 uses two sets of welding guns for simultaneous welding. The welding guns of the welding module 2 use fiber lasers for welding. The welding guns are mounted on a linearly movable fixture to ensure that when the parts to be processed move to the welding position, welding is completed along a preset trajectory. Welding and loading / unloading can be performed simultaneously.

[0025] Specifically, the feeding module 1 includes a mounting bracket 11 mounted on the machine base 3, a station switching component 12 rotatably mounted on the mounting bracket 11, and two sets of tooling modules 13. The station switching component 12 is used to rotate and switch the positions of the two sets of tooling modules 13 to realize dual-station switching feeding.

[0026] like Figure 3 The workstation switching component 12 includes a drive motor 121 and a rotating horizontal plate 122. The drive motor 121 is fixed on the mounting bracket 11. The output end of the drive motor 121 is connected to the rotating horizontal plate 122. The drive motor 121 drives the rotating horizontal plate 122 to rotate by a rotation angle of 180° in one rotation.

[0027] The rotating horizontal plate 122 is horizontally set, and a set of tooling modules 13 are fixed on both sides of the rotating horizontal plate 122. The tooling modules 13 are used to place and clamp the parts to be processed. According to the position of the two sides of the rotating horizontal plate 122, one side is set as the operation position for manual loading and unloading, and the other side is set as the welding module 2. When the rotating horizontal plate 122 rotates 180°, the positions of the two sets of tooling modules 13 can be switched, so that one set of tooling modules 13 corresponds to the operation position for manual loading and unloading, and the other set of tooling modules 13 corresponds to the position of the welding module 2, so that welding and loading and unloading can be performed simultaneously.

[0028] like Figure 4 A set of tooling modules 13 includes a mounting base 131 and a first tooling module 132 and a second tooling module 133 disposed on the mounting base 131. The mounting base 131 is used to fix to the rotating horizontal plate 122. The first tooling module 132 is used to place the hook 4, and the second tooling module 133 is used to place the iron plate 5. When the hook 4 on the first tooling module 132 is placed in place and the iron plate 5 on the second tooling module 133 is placed in place, the welding positions of the hook 4 and the iron plate 5 are automatically aligned, and the welding surface of the hook 4 is kept in contact with the welding surface of the iron plate 5.

[0029] The specific structure of the first tooling module 132 is as follows: Figure 5 The first tooling module 132 includes a placement frame 1321 fixed on the base plate 1311 of the mounting base 131, a first clamping component and a positioning block 1325 disposed on the end face of the placement frame 1321. There is a gap 1326 between the first clamping component and the positioning block 1325. The middle part of the Z-shaped hook 4 is placed in the gap 1326, and one end of the Z-shaped hook 4 is folded as a welding edge 41 for welding with the iron plate 5. When the hook 4 is placed in the gap 1326, the welding edge 41 is in the clamping area of ​​the first clamping component. The first clamping component can be driven by the PLC control system to clamp and fix the welding edge 41 on the placement frame 1321 to prevent the hook 4 from falling off the tooling during rotation.

[0030] The first clamping assembly includes a first telescopic cylinder 1322 and a clamping block 1323 fixed to the end of the first telescopic cylinder. The clamping block 1323 has a slot 1324 on the side facing the welding edge 41. The slot 1324 is an inverted L-shaped slot structure. The height of the slot 1324 is adapted to the width of the hook 4, and the depth of the slot 1324 is adapted to the thickness of the hook 4. When the welding edge 41 is in the clamping area of ​​the first clamping assembly, the first telescopic cylinder 1322 drives the clamping block 1323 to move in the direction towards the welding edge 41 and form a snap-fit ​​engagement with the welding edge 41. The welding edge 41 is pressed and fixed vertically on the end face of the clamping block 1323 and the placement frame 1321, realizing the precise positioning and clamping of the hook 4 before welding.

[0031] The first telescopic cylinder 1322 is a servo electric cylinder. All the motion degrees of freedom of the clamping block 1323 are uniquely determined by the linear extension stroke of the motor output shaft. By setting the clamping displacement value as the extension displacement of the first telescopic cylinder in the PLC control system, when the PLC control system receives the "clamping" command, the PLC control system sends the corresponding number of pulses to the first telescopic cylinder 1322. After the motor shaft extends beyond the "clamping displacement value", it automatically stops, forming an electric-soft limit, and pressing and fixing the welding edge 41. Similarly, by setting the "zero displacement value" in the PLC control system, the motor shaft can be completely retracted, realizing the release of the clamping block 1323.

[0032] The specific structure of the second tooling module 133 is as follows: Figure 6 The second tooling module 133 includes a second clamping component and a first limiting block 1331 fixed on the mounting base 131. The first limiting block 1331 is fixed on the base plate 1311 of the mounting base 131. The second clamping component is disposed on the side plate 1312 of the mounting base 131. The second clamping component includes a pressing component and second limiting blocks 1332 disposed on both sides of the pressing component. The second limiting block 1332 includes a limiting groove 1333 that runs vertically through the plate. The lateral width of the limiting groove 1333 is adapted to the thickness of the iron plate 5. When the iron plate 5 is inserted vertically from top to bottom into the two limiting grooves 1333, and the bottom of the iron plate 5 abuts against the first limiting block 1331, the pressing component can be driven to clamp the iron plate 5 in the horizontal direction to prevent the iron plate 5 from detaching from the tooling during rotation.

[0033] The clamping assembly includes a second telescopic cylinder 1334 and a clamping block 1335 fixed to the end of the second telescopic cylinder. The clamping block 1335 has a pressure column 1336 facing the iron plate 5. A pressure sensor 1337 is provided at the end of the pressure column 1336. When the PLC control system receives the "clamping" command, the PLC control system sends a command to the second telescopic cylinder 1334. The second telescopic cylinder 1334 retracts and drives the clamping block 1335 to press against the iron plate 5. The pressure column 1336 first contacts the base surface of the iron plate 5. Then the pressure sensor 1337 collects the contact force in real time and sends it back to the PLC control system as a 0-10V analog signal. When the feedback voltage reaches the preset threshold of 3.0V (corresponding to a clamping force of 100N), the PLC control system immediately shuts off the motor enable, and the motor shaft self-locks and stops, completing the "constant force clamping" stage to achieve clamping and fixing of the iron plate 5. When it is necessary to release the clamp, the PLC control system outputs a reverse pulse, the motor shaft retracts and extends to the origin, the pressure column 1336 is completely separated from the iron plate 5, and the iron plate 5 can be taken out vertically along the limit groove 1333.

[0034] Specifically, the welding module 2 includes a movable fixture and a welding torch clamp 23. The welding torch clamp 23 is mounted on the movable fixture and is used to hold and fix the welding torch. The welding torch uses a fiber laser with adjustable power and wavelength. Welding parameters can be called or set within the PLC control system, such as a laser power of 200W and a welding speed of 5-10mm / s. Parameter templates can be stored within the PLC control system and can be called with a single click.

[0035] To achieve automatic welding and torch advance / retreat of the welding torch, the moving fixture in this embodiment includes a linear transverse module 21 that moves laterally and a linear lifting module 22 that moves vertically. The linear lifting module 22 is mounted on the linear transverse module 21, and the welding torch clamp 23 is mounted on the linear lifting module 22. The linear transverse module 21 moves laterally towards the loading module 1 for rapid torch advance and retreat, ensuring accurate arrival at the welding start point and rapid retraction after welding, thus avoiding interference between the welding torch and the workpiece or clamp. The linear lifting module 22 drives the welding torch along a preset trajectory to complete welding. The welding seam between the hook 4 and the iron plate 5 is a vertical weld seam. The linear lifting module 22 drives the welding torch to move at a uniform speed in the vertical direction to match the vertical weld seam trajectory between the hook 4 and the iron plate 5, achieving continuous and stable automatic welding. In this embodiment, both the linear transverse module 21 and the linear lifting module 22 use existing linear movement modules, which will not be described in detail here.

[0036] The welding module 2 uses two sets of welding guns for simultaneous welding. To facilitate simultaneous welding by the two sets of welding guns, a window 1313 is provided on the side plate 1312 of the mounting base 131. The welding position of the hook 4 and the iron plate 5 is located within the window 1313. Figure 8-9 The welding seam of the hook 4 and the iron plate 5 includes a first weld seam 42 on the front side and a second weld seam 43 on the rear side. The second weld seam 43 on the rear side is exposed by the window 1313 so that the welding gun can weld it.

[0037] The mounting base 131 and side plate 1312 have reserved windows 1313, which fully expose the two weld seams without obstruction. Combined with the rapid gun advance of the transverse module and the uniform wave movement of the lifting module, the laser focus is always kept in the center of the weld seam, resulting in uniform penetration depth and no spatter or undercut.

[0038] The automatic double-sided welding device for hooks provided in this embodiment has the following working process: Step 1: Parameter preset. According to the specifications of the parts to be processed, call or set the welding parameters in the PLC control system (such as laser power 200W welding speed 5-10mm / S); and set the "clamping displacement value" of the first telescopic cylinder 1322. Step 2: Manual loading. The operator holds the hook 4 and the iron plate 5 and places the hook 4 and the iron plate 5 on the first tooling module 132 and the second tooling module 133 in sequence. The start button is pressed and the PLC control system controls the loading module 1 and the welding module 2 to work. Step 3, the PLC control system operation process is as follows: Step a: Control the movement of the first telescopic cylinder 1322 and the second telescopic cylinder 1334 on the tooling module 13 through the program, and clamp and fix the hook 4 iron plate 5 through the clamping block 1323 and the pressing block 1335. After the clamping is in place, the feedback signal is sent to the PLC control system to perform the next operation. Step b: Control the drive motor 121 of the feeding module 1 through the program to drive the rotating horizontal plate 122 to rotate 180°, and rotate the tooling module 13, which is equipped with the hook to be welded 4 and the iron plate 5, to the welding position corresponding to the welding module 2. After the rotation is in place, a feedback signal is sent to the PLC control system to perform the next operation. In step b, when one set of tooling modules 13 containing the hook to be welded 4 and the iron plate 5 rotates to the welding position, another set of tooling modules 13 rotates to the loading and unloading position, and the operator can unload the welded finished product and load the part to be welded. Step c: Control welding module 2 through the program. The horizontal moving module sends the welding torch to the starting point of the weld seam → the lifting module starts and the welding torch rises (or falls) at a constant speed along the vertical weld seam to complete the welding → after the welding is completed, the lifting module decelerates and stops → the horizontal moving module immediately retracts the torch to a safe position to wait for the next workpiece.

[0039] To ensure that the loading and unloading cycle matches the welding cycle and to avoid "empty welding" or "gun collision", the machine adopts a dual-insurance mode of "manual confirmation start + PLC automatic process".

[0040] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A double-sided automatic welding device for hooks, characterized in that: It includes a feeding module, a welding module, and a PLC control system, wherein both the feeding module and the welding module are controlled by the PLC control system; The loading module includes a station switching component and two sets of tooling modules. The tooling modules are used to place and clamp the parts to be processed. The station switching component is used to rotate and switch the positions of the two sets of tooling modules so that one set of tooling modules corresponds to the manual loading and unloading operation position, and the other set of tooling modules corresponds to the position of the welding module. The part to be processed includes a Z-shaped hook and an iron plate welded to the hook. The tooling module includes a first tooling module and a second tooling module. The first tooling module is used to place the hook, and the second tooling module is used to place the iron plate. By matching the positions of the first tooling module and the second tooling module, the welding positions of the hook and the iron plate are aligned and fitted. A welding module is set on each of the two sides corresponding to the location of the other set of tooling modules. The welding module includes a movable tooling and a welding gun clamp. The welding gun clamp is installed on the movable tooling and is used to hold and fix the welding gun.

2. The automatic double-sided welding device for hooks according to claim 1, characterized in that: The feeding module also includes a mounting bracket, and the workstation switching component includes a drive motor and a rotating horizontal plate. The drive motor is fixed on the mounting bracket, and the output end of the drive motor is connected to the rotating horizontal plate. The drive motor drives the rotating horizontal plate to rotate in one rotation angle of 180°. The rotating horizontal plate is set horizontally, and a set of tooling modules is fixed on both sides of the rotating horizontal plate.

3. The automatic double-sided welding device for hooks according to claim 2, characterized in that: The tooling module includes a mounting base, and the first tooling module and the second tooling module are disposed on the mounting base. The mounting base is used to fix to the rotating horizontal plate.

4. The automatic double-sided welding device for hooks according to claim 3, characterized in that: The first tooling module includes a placement frame fixed to the base plate of the mounting base for setting a first clamping component and a positioning block on the end face of the placement frame; there is a gap between the first clamping component and the positioning block, and the Z-shaped middle part of the hook is placed in the gap; One end of the hook with a Z-shaped bend serves as a welding edge for welding with the iron plate. When the hook is placed in the gap, the welding edge is within the clamping area of ​​the first clamping component. The first clamping component can be driven by the PLC control system to clamp and fix the welding edge on the placement frame.

5. The automatic double-sided welding device for hooks according to claim 4, characterized in that: The first clamping assembly includes a first telescopic cylinder and a clamping block fixed to the end of the first telescopic cylinder. The clamping block has a slot on the side facing the welding edge. The slot is an inverted L-shaped slot structure. The first telescopic cylinder drives the clamping block to move in a direction toward or away from the welding edge, so that the slot can engage with the welding edge or disengage from the welding edge.

6. The automatic double-sided welding device for hooks according to claim 3, characterized in that: The second tooling module includes a second clamping component and a first limiting block fixed on the mounting base. The first limiting block is fixed to the bottom plate of the mounting base, and the second clamping component is disposed on the side plate of the mounting base. The second clamping assembly includes a clamping assembly and second limiting blocks disposed on both sides of the clamping assembly. The second limiting block includes a limiting groove disposed vertically through the clamping assembly. When the iron plate is inserted vertically from top to bottom into the two limiting slots, and the bottom of the iron plate abuts against the first limiting block, the clamping assembly can be driven to clamp the iron plate horizontally.

7. The automatic double-sided welding device for hooks according to claim 6, characterized in that: The clamping assembly includes a second telescopic cylinder and a clamping block fixed to the end of the second telescopic cylinder. A pressure column is provided on the side of the clamping block facing the iron plate, and a pressure sensor is provided at the end of the pressure column. The second telescopic cylinder drives the pressing block to move in a direction toward or away from the iron plate, so that the pressing column presses against the iron plate or the pressing column disengages from the iron plate.

8. The automatic double-sided welding device for hooks according to claim 3, characterized in that: A window is provided on the side plate of the mounting base, and the welding position of the hook to the iron plate is located inside the window; The welding positions include a first weld and a second weld, and the welding modules set on both sides are used for welding the first weld and the second weld, respectively.

9. The automatic double-sided welding device for hooks according to claim 1, characterized in that: The welding torch uses a fiber laser.

10. The automatic double-sided welding device for hooks according to claim 1, characterized in that: The movable fixture includes a linear transverse module that moves laterally and a linear lifting module that moves vertically. The linear lifting module is mounted on the linear transverse module, and the welding torch fixture is mounted on the linear lifting module. The linear lateral movement module moves laterally in the direction toward the feeding module for rapid advance and retraction of the welding torch; the linear lifting module is used to drive the welding torch along a preset trajectory to complete welding.

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