A welding device for irregularly shaped sheet metal parts

Abstract

This invention discloses a welding device for irregularly shaped sheet metal parts, belonging to the field of sheet metal welding technology. It includes a handle, a welding arm connected to the handle, and a welding head installed at the end of the welding arm. The welding arm includes several spliced ​​joint sleeves, which are connected end-to-end. An included angle exists between the two end faces of each joint sleeve. Adjacent joint sleeves are rotatably connected via bearings. A first motor is installed on the inner wall of each joint sleeve, and a gear is connected to the output end of the first motor. An internal gear ring meshing with the gear is installed on the adjacent joint sleeve. A welding wire is connected to the welding head. The splicing of the joint sleeves forms a channel for the welding wire to pass through. A deflection control component for controlling the angle of the welding head is installed on the outer wall of the welding arm. This invention solves the problem of not being able to clearly observe the state of the molten pool and the alignment of the welding wire due to severe obstruction of the view by the workpiece's structure.

Description

Technical Field

[0001] This invention belongs to the field of sheet metal welding technology, and specifically relates to a welding device for irregularly shaped sheet metal parts. Background Technology

[0002] Irregularly shaped sheet metal parts typically have extremely irregular spatial geometries, potentially containing complex features such as deep cavities, multiple inward flanges, or interlaced reinforcing ribs, resulting in multiple inaccessible dead zones during welding. These dead zones prevent standard welding torches or laser welding heads from reaching the welding area at the ideal angle. When operators use manual welding, their view is often severely obstructed by the workpiece's structure, making it difficult to clearly observe the molten pool and wire alignment. This necessitates a heavy reliance on the operator's feel and experience, leading to poor welding quality consistency and extremely low efficiency. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a welding device for irregularly shaped sheet metal parts, which can effectively solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention discloses a welding device for irregularly shaped sheet metal parts, comprising a handle, a welding arm connected to the handle, and a welding head installed at the end of the welding arm. The welding arm includes several spliced ​​joint sleeves, which are connected end to end in sequence. There is an included angle between the two end faces of the joint sleeves. Adjacent joint sleeves are rotatably connected by bearings. A first motor is installed on the inner side wall of the joint sleeve, and a gear is connected to the output end of the first motor. An internal gear ring that meshes with the gear is installed on the adjacent joint sleeve. The welding head is connected to a welding wire, and the splicing of the joint sleeves forms a channel for the welding wire to pass through. A deflection control component for controlling the angle of the welding head is installed on the outer side wall of the welding arm.

[0006] Furthermore, the welding head is connected to an outermost joint sleeve via an elastic support device. The deflection control assembly includes a pull rope, a guide ring, a coil spring, a connecting handle, and a second motor. The output end of the second motor is connected to one end of the coil spring via the connecting handle, and the other end of the coil spring is connected to one end of the pull rope. The other end of the pull rope is connected to the welding head. The guide ring is installed on the outer wall of the joint sleeve and is used to guide the pull rope. A guide hole for the pull rope to pass through is formed on the outermost joint sleeve.

[0007] Furthermore, the elastic support device includes a conical spring, the large end face of which is fixedly connected to the joint sleeve, and the small end face of which is connected to the welding head.

[0008] Furthermore, one end of the joint sleeve forms a step for mounting the bearing, and the other end forms an inner cylinder that mates with the inner ring of the bearing, with the inner cylinder protruding from the end face of the joint sleeve.

[0009] Furthermore, a rotating sleeve is rotatably mounted on the outer side of the joint sleeve at the outermost end. The rotating sleeve is rotatably mounted on the outer side of the joint sleeve, and the inner wall of the rotating sleeve forms a friction surface that mates with the joint sleeve.

[0010] Furthermore, a reflector is provided on the outer side of the rotating sleeve. The reflectors are evenly spaced along the circumference of the joint sleeve, with the mirror surface facing outward. One end of the reflector is hinged to the rotating sleeve, and the other end is connected to the rotating sleeve through a telescopic device.

[0011] Furthermore, the handle includes a pivot, a locking element, a first link, and a second link. The pivot is fixed to the outside of the innermost joint sleeve and is simultaneously hinged to the first link. The pivot and the first link are fixed together by the locking element. The end of the first link away from the pivot is hinged to the end of the second link. The first link and the second link are fixed together by the locking element. The end of the second link away from the first link extends outward.

[0012] The beneficial effects of this invention are as follows:

[0013] This invention discloses a welding device for irregularly shaped sheet metal parts. By setting up a multi-section joint sleeve, the two adjacent joint sleeves can adapt to different angle changes. Before the welding head performs welding, the shape and extension direction of the welding arm can be continuously adjusted. In use, the welding arm can extend into the dead corner of the irregularly shaped sheet metal part, making the welding smoother. It solves the problem that the state of the molten pool and the alignment of the welding wire cannot be clearly observed due to the severe obstruction of the view by the structure of the workpiece itself. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0015] Figure 1 This is a schematic diagram of the welding device.

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the joint sleeve structure;

[0018] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0019] Figure 5 This is a schematic diagram of the first motor.

[0020] Figure 6 This is a cross-sectional view of the joint sleeve.

[0021] The following components are labeled in the attached diagram: handle 1, welding arm 2, welding head 3, joint sleeve 4, bearing 5, first motor 6, gear 7, internal gear ring 8, elastic support device 9, pull rope 10, guide ring 11, coil spring 12, connecting handle 13, second motor 14, guide hole 15, step 16, inner cylinder 17, rotating sleeve 18, reflector 19, telescopic device 20, pivot 21, first connecting rod 22, second connecting rod 23. Detailed Implementation

[0022] like Figures 1-6 As shown, the present invention discloses a welding device for irregularly shaped sheet metal parts, including a handle 1, a welding arm 2 connected to the handle 1, and a welding head 3 installed at the end of the welding arm 2. The handle 1 is operated by the operator holding it. The welding arm 2 and the welding head 3 connected to it face outward. The welding arm 2 can bend to adjust the insertion angle, thereby facilitating welding in the dead corners of the irregularly shaped sheet metal parts and avoiding interference.

[0023] The welding arm 2 includes several spliced ​​joint sleeves 4, which are connected end to end in sequence. There is an included angle between the two end faces of the joint sleeve 4. Adjacent joint sleeves 4 are rotatably connected by bearings 5. The fixed installation method is as follows: the step 16 of one joint sleeve 4 is connected to the outer ring of the bearing 5, and the inner cylinder 17 of the other joint sleeve 4 is connected to the inner ring of the bearing 5. The connection method is an interference fit, which can be understood by those skilled in the art.

[0024] A first motor 6 is installed on the inner wall of the joint sleeve 4. A gear 7 is connected to the output end of the first motor 6. An internal gear ring 8, meshing with the gear 7, is installed on the adjacent joint sleeve 4. The first motor 6 drives the gear 7 to rotate, which in turn drives the internal gear ring 8 and the joint sleeve 4 connected to it to rotate, thereby achieving angle adjustment. This invention uses multiple sets of joint sleeves 4, allowing for adjustment of the direction of different joint sleeves 4 as needed to meet the requirements of the actual welding angle.

[0025] The welding head 3 is connected to a welding wire, and the joint sleeves 4 are spliced ​​together to form a channel for the welding wire to pass through; a deflection control component is installed on the outer wall of the welding arm 2 to control the angle of the welding head 3, and the welding angle of the welding head 3 is adjusted by the deflection control component.

[0026] This invention discloses a welding device for irregularly shaped sheet metal parts. By setting multiple joint sleeves 4, the angle between two adjacent joint sleeves 4 can be adapted to different changes. Before welding by the welding head 3, the shape and extension direction of the welding arm 2 can be continuously adjusted. In use, the welding arm 2 can be extended into the dead corner of the irregularly shaped sheet metal part, making the welding smoother. It solves the problem that the state of the molten pool and the alignment of the welding wire cannot be clearly observed due to the severe obstruction of the view by the structure of the workpiece itself.

[0027] In this embodiment, the welding head 3 is connected to the outermost joint sleeve 4 via an elastic support device 9. The elastic support device 9 provides elastic pre-support force for the welding head 3 during deflection, ensuring welding stability while facilitating position adjustment. Specifically, the deflection control component disclosed in this invention includes a pull rope 10, a guide ring 11, a coil spring 12, a connecting handle 13, and a second motor 14. The output end of the second motor 14 is connected to one end of the coil spring 12 via the connecting handle 13. The pull rope 10 is also made of a material with a certain elasticity to ensure a certain tension. The other end of the coil spring 12 is connected to one end of the pull rope 10, providing elastic pre-tension to the pull rope 10. The other end of the pull rope 10 is connected to the welding head 3. The guide ring 11 is installed on the outer wall of the joint sleeve 4 and guides the pull rope 10. A guide hole 15 is formed on the outermost joint sleeve 4 for the pull rope 10 to pass through, guiding the pull rope 10 and making the device more stable during operation.

[0028] In this embodiment, the elastic support device 9 includes a conical spring. The large end face of the conical spring is fixedly connected to the joint sleeve 4, and the small end face of the conical spring is connected to the welding head 3. When the deflection control component is not in operation, the welding head 3 is only subjected to the elastic support of the elastic support device 9, and this support force is much greater than the reaction force experienced by the welding head 3 during welding.

[0029] In this embodiment, one end of the joint sleeve 4 forms a step 16 for installing the bearing 5, and the other end forms an inner cylinder 17 that mates with the inner ring of the bearing 5. The inner cylinder 17 protrudes from the end face of the joint sleeve 4, which facilitates the installation and removal of the bearing 5.

[0030] In this embodiment, a rotating sleeve 18 is rotatably mounted on the outer side of the joint sleeve 4 at the outermost end. The rotating sleeve 18 is rotatably mounted on the outer side of the joint sleeve 4, and the inner wall of the rotating sleeve 18 forms a friction surface that mates with the joint sleeve 4. The frictional engagement between the rotating sleeve 18 and the joint sleeve 4 can maintain the relative position of the rotating sleeve 18 and the joint sleeve 4 in the circumferential direction. When it is necessary to adjust the angle of the rotating sleeve 18, simply rotate the rotating sleeve 18. Under the action of friction, the stability of the rotating sleeve 18 can be maintained.

[0031] In this embodiment, a reflector 19 is also provided on the outer side of the rotating sleeve 18, which can facilitate the observation of the welding position. The reflectors 19 are evenly distributed along the circumference of the joint sleeve 4, and the mirror surface of the reflector 19 faces outward. One end of the reflector 19 is hinged to the rotating sleeve 18, and the other end is connected to the rotating sleeve 18 through a telescopic device 20. The telescopic device 20 is a cylinder. By setting the telescopic device 20, the angle of the reflector 19 can be easily adjusted.

[0032] In this embodiment, the handle 1 includes a pivot 21, a locking member, a first connecting rod 22, and a second connecting rod 23. The pivot 21 is fixed to the outside of the innermost joint sleeve 4. The locking member can be a nut, which is connected to the pivot 21 by threads. The pivot 21 is also hinged to the first connecting rod 22, and the pivot 21 and the first connecting rod 22 are fixed together by the locking member. The end of the first connecting rod 22 away from the pivot 21 is hinged to the end of the second connecting rod 23, and the first connecting rod 22 and the second connecting rod 23 are fixed together by the locking member. The end of the second connecting rod 23 away from the first connecting rod 22 extends outward. By providing the handle 1, it is convenient for operators to perform welding operations.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A welding device for irregularly shaped sheet metal parts, characterized in that: The welding arm includes a handle, a welding arm connected to the handle, and a welding head installed at the end of the welding arm. The welding arm includes several spliced ​​joint sleeves connected end-to-end. An included angle exists between the two end faces of each joint sleeve. Adjacent joint sleeves are rotatably connected via bearings. A first motor is mounted on the inner wall of each joint sleeve, and a gear is connected to the output end of the first motor. An internal gear ring meshing with the gear is mounted on the adjacent joint sleeve. A welding wire is connected to the welding head, and the splicing of the joint sleeves forms a channel for the welding wire to pass through. A deflection control assembly for controlling the angle of the welding head is mounted on the outer wall of the welding arm. The welding head is connected to the outermost joint sleeve via an elastic support device. The deflection control assembly includes a pull rope, a guide ring, a coil spring, a connecting handle, and a second motor. The output end of the second motor is connected to one end of the coil spring via the connecting handle, and the other end of the coil spring is connected to one end of the pull rope. One end of the pull rope is connected to the welding head. A guide ring is installed on the outer wall of the joint sleeve to guide the pull rope. A guide hole for the pull rope to pass through is formed on the outermost joint sleeve. The elastic support device includes a conical spring. The large end face of the conical spring is fixedly connected to the joint sleeve, and the small end face of the conical spring is connected to the welding head. One end of the joint sleeve forms a step for installing the bearing, and the other end forms an inner cylinder that mates with the inner ring of the bearing. The inner cylinder protrudes from the end face of the joint sleeve. A rotating sleeve is rotatably installed on the outer side of the outermost joint sleeve. The inner wall of the rotating sleeve forms a friction surface that mates with the joint sleeve. A reflector is also provided on the outer side of the rotating sleeve. The reflectors are evenly spaced along the circumference of the joint sleeve, with the mirror surface facing outward. One end of the reflector is hinged to the rotating sleeve, and the other end is connected to the rotating sleeve through a telescopic device.

2. The welding device for irregularly shaped sheet metal parts according to claim 1, characterized in that: The handle includes a pivot, a locking element, a first link, and a second link. The pivot is fixed to the outside of the innermost joint sleeve and is also hinged to the first link. The pivot and the first link are fixed together by the locking element. The end of the first link away from the pivot is hinged to the end of the second link. The first link and the second link are fixed together by the locking element. The end of the second link away from the first link extends outward.

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