Automobile sheet metal part positioning and welding device
By designing the car sheet metal parts to locate the welding device, the coordination of rotating components and push components can be used to achieve the flat alignment of the edge of the new material and the edge of the old material, and welding to solve the poor quality and poor welding quality and poor welding mass after the car side of the car collision. The problem of low surface flatness improves welding quality and efficiency.
Patent Information
- Application Number
- CN202411163301.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-01-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
After the car crashes, the side enclosure plates are prone to deform, resulting in poor weld quality and low surface flatness, increasing the workload of subsequent polishing and smoothing, and reducing sheet metal efficiency.
A positioning welding device for automobile sheet metal parts is designed, which includes a rotating component and a pushing component. Through the cooperation of the screw and the sliding head, the edge of the new material and the edge of the old material are flushly aligned, and the first electrode is used to pair the edges on both sides of the gap. The plates are welded to ensure welding quality.
It improves the flatness of the surface of the side panels, reduces the workload of subsequent grinding and smoothing, speeds up the sheet metal efficiency, and ensures welding quality.
Smart Images
Figure CN119328368A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobile sheet metal, and in particular to a positioning welding device for automobile sheet metal parts. Background Art
[0002] After a car collides and is scratched, the car sheet metal parts including fenders, door panels, hoods, side panels, etc. may be dented or punctured. Fenders, door panels and hoods are smaller than side panels. If fenders, door panels and hoods are punctured, they are usually replaced. The side panels are larger in size, and fenders and door panels need to be installed on the side panels. There are more connection points between the side panels and other parts of the car body. In order to ensure the strength of the car body and quickly repair the vehicle, the side panels that have lost their protective function are usually cut, and the newly cut side panels (called new materials) are welded to the original side panels (called old materials) to complete the repair. Since the side panels are easily deformed during the welding process, the weld quality is poor and the flatness of the side panel surface is low. Summary of the invention
[0003] The purpose of the present invention is to overcome the problems in the prior art and provide a positioning welding device for automobile sheet metal parts that can ensure the welding quality, make the flatness of the side panel surface high, reduce the workload of subsequent polishing and smoothing, and speed up the sheet metal efficiency.
[0004] The present invention provides a positioning welding device for automobile sheet metal parts, which includes a bracket and a welding machine. The welding machine includes a first electrode and a second electrode, and also includes: a rotating component and a pushing component; the rotating component includes a threaded sleeve and a screw, the middle part of the outer wall of the threaded sleeve is rotatably connected to the bracket, the threaded sleeve is threadedly connected to the screw, and both ends of the screw pass through the threaded sleeve, the end of the screw abuts the edge of a new material, and the first electrode is connected to the screw, and the second electrode is connected to the new material, and the welding machine is started so that the end of the screw is welded to the edge of the new material; the pushing component is arranged on the bracket, and the pushing component has a moving end, the moving end is rotatably connected to one end of a push rod, and the other end of the push rod is rotatably connected to the outer wall of the end of the threaded sleeve away from the new material, and the moving end moves on the bracket so that the end of the screw pulls the edge of the new material to align with the edge of the old material.
[0005] Preferably, a radial sliding hole is provided at the end of the screw near the new material, a sliding rod is slidably connected in the sliding hole, a sliding head is fixedly connected to the end of the sliding rod, the sliding head is slidably connected to a plane provided at the end of the screw, an arc-shaped notch is provided on the sliding head, the central axis of the arc-shaped notch is parallel to the axis of the sliding rod, the arc-shaped notch is used to clamp a metal ring, after starting the welding machine, the current passes through the first electrode, the screw, the sliding head, the metal ring, the new material and the second electrode in sequence to form a circuit for welding the metal ring to the new material, and when the end of the screw moves, the metal ring rotates in the arc-shaped notch to prevent the end of the screw from causing the new material to twist.
[0006] Preferably, the pushing assembly includes a screw and a screw nut, a slide groove is provided on the bracket, the screw is rotatably set on the two side walls in the length direction of the slide groove, the end of the screw passes through the surface of the bracket, the screw thread cooperates with the screw nut, the screw nut is rotatably connected to the end of the push rod, and the outer surface of the screw nut is slidably connected to the side wall of the slide groove.
[0007] Preferably, the end of the screw far away from the new material is provided with a through hole along the radial direction of the screw, a moving rod is passed through the through hole, and baffles are fixedly provided at both ends of the moving rod.
[0008] Preferably, the sliding hole is a prismatic hole, and the sliding rod is a prismatic rod. The prismatic rod is inserted into the prismatic hole to prevent the sliding head from rotating relative to the screw rod when there is a gap between the sliding head and the screw rod, thereby avoiding the problem of poor contact.
[0009] Preferably, bearings are provided at both ends of the screw rod, and each bearing is respectively arranged in the bracket close to both ends of the slide groove, and the bearings are deep groove ball bearings.
[0010] Preferably, a handle is fixedly provided on the end of the screw rod passing through the surface of the bracket, and the handle is provided with anti-slip grooves.
[0011] Preferably, both ends of the push rod are fixed with rotating shafts, the two rotating shafts are parallel to each other, each rotating shaft is rotatably connected to an ear plate, and the two ear plates are respectively fixed on the screw nut and the threaded sleeve.
[0012] Preferably, one end of a shaft is fixedly connected to the outer wall of the threaded sleeve, and the other end of the shaft is rotatably connected to the bracket.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] Before welding begins, the end of the screw is rotated so that it can abut against the edge of the new material. The automobile sheet metal positioning welding device temporarily welds the end of the screw to the edge of the new material, and adjusts the position of the movable end on the push assembly so that the threaded sleeve drives the screw to rotate, so that the end of the screw drives the edge of the new material to move to the edge of the old material, so that the edge of the new material is flush with the edge of the old material to form a gap, and then the first electrode is used to weld the plates on both sides of the gap to ensure the welding quality, so that the flatness of the surface of the side panel is high, the workload of subsequent polishing and smoothing is reduced, and the sheet metal efficiency is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a cross-sectional view of the present invention.
[0016] Figure 2 Schematic diagram of the sliding head.
[0017] Figure 3 It is a schematic diagram of the cooperation between the metal ring and the sliding head.
[0018] Figure 4 Schematic diagram of the disassembly and assembly of the metal ring.
[0019] Description of reference numerals:
[0020] 1. Bracket, 2. Threaded sleeve, 3. Screw, 4. Push rod, 5. Sliding rod, 6. Sliding head, 7. Arc notch, 8. Metal ring, 9. Screw, 10. Screw nut, 11. Slide groove, 12. Moving rod, 14. Bearing, 15. Handle. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0023] The drawings in this disclosure are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic diagrams of the structures.
[0024] The automobile sheet metal positioning welding device provided by the present invention is as follows Figure 1 The invention comprises a support 1 and a welding machine, wherein the welding machine comprises a first electrode and a second electrode, and further comprises: a rotating assembly and a pushing assembly; the rotating assembly comprises a threaded sleeve 2 and a screw 3, wherein the middle part of the outer wall of the threaded sleeve 2 is rotatably connected to the support 1, the threaded sleeve 2 is threadedly connected to the screw 3, and both ends of the screw 3 pass through the threaded sleeve 2, and the end of the screw 3 abuts against the edge of the new material, and the first electrode is connected to the screw 3, and the second electrode is connected to the new material, and the welding machine is started so that the end of the screw 3 is welded to the edge of the new material; the pushing assembly is arranged on the support 1, and the pushing assembly has a moving end, wherein the moving end is rotatably connected to one end of a push rod 4, and the other end of the push rod 4 is rotatably connected to the outer wall of the end of the threaded sleeve 2 away from the new material, and the moving end moves on the support 1 so that the end of the screw 3 pulls the edge of the new material to align with the edge of the old material.
[0025] Before starting welding, the screw rod 3 is rotated so that the end of the screw rod 3 can abut against the edge of the new material. The automobile sheet metal positioning welding device temporarily welds the end of the screw rod 3 to the edge of the new material, and adjusts the position of the movable end on the push assembly so that the threaded sleeve 2 drives the screw rod 3 to rotate, so that the end of the screw rod 3 drives the edge of the new material to move to the edge of the old material, so that the edge of the new material is flush with the edge of the old material to form a gap, and then the first electrode is used to weld the plates on both sides of the gap to ensure the welding quality, so that the flatness of the surface of the side panel is high, the workload of subsequent polishing and smoothing is reduced, and the sheet metal efficiency is accelerated.
[0026] In this embodiment, Figure 2-Figure 4 The end of the screw 3 near the new material is provided with a radial sliding hole, and a sliding rod 5 is slidably connected in the sliding hole. The end of the sliding rod 5 is fixedly connected with a sliding head 6, and the sliding head 6 is slidably connected to the plane provided at the end of the screw 3. An arc-shaped notch 7 is provided on the sliding head 6, and the central axis of the arc-shaped notch 7 is parallel to the axis of the sliding rod 5. The arc-shaped notch 7 is used to clamp a metal ring 8. After starting the welding machine, the current passes through the first electrode, the screw 3, the sliding head 6, the metal ring 8, the new material and the second electrode in sequence to form a circuit for welding the metal ring 8 to the new material. When the end of the screw 3 moves, the metal ring 8 rotates in the arc-shaped notch 7 to prevent the end of the screw 3 from driving the new material to twist.
[0027] Since the movement trajectory of the welding part between the end of the screw 3 and the new material is arc-shaped during the rotation of the screw 3, the end of the screw 3 drives the new material to twist, which may easily cause the connection between the end of the screw 3 and the welding part of the new material to loosen, so the above structure is designed; when the screw 3 rotates, the metal ring 8 adaptively rotates in the arc-shaped notch 7 on the sliding head 6, reducing the torsion angle between the new material and the screw 3, reducing the deformation between the new material and the screw 3, and ensuring the temporary welding strength of the metal ring 8 welded to the new material.
[0028] After the above structure completes the welding of one metal ring 8, disconnect the power supply of the welding machine, move the slide bar 5 laterally, so that the metal ring 8 is disengaged from the arc-shaped notch 7, and then reinstall a new metal ring 8, and install the new metal ring 8 on the next edge point of the new material so that the next edge point of the new material is welded to the old material, repeat this step until the new material is completely welded to the old material, and then use pliers to unscrew all the metal rings 8.
[0029] In this embodiment, Figure 1 The pushing assembly includes a screw rod 9 and a screw rod nut 10. A slide groove 11 is provided on the bracket 1. The screw rod 9 is rotatably set on the two side walls of the slide groove 11 in the length direction. The end of the screw rod 9 passes through the surface of the bracket 1. The screw rod 9 is threadedly matched with the screw rod nut 10. The screw rod nut 10 is rotatably connected to the end of the push rod 4, and the outer surface of the screw rod nut 10 is slidably connected to the side wall of the slide groove 11.
[0030] By rotating the end of the screw rod 9 , the screw rod 9 drives the screw nut 10 to move along the slide groove 11 , so that the push rod 4 pushes the threaded sleeve 2 to rotate on the bracket 1 to change the angle of the screw rod 3 .
[0031] In this embodiment, Figure 1 As shown, the end of the screw 3 away from the new material is provided with a through hole along the radial direction of the screw 3, and a moving rod 12 is passed through the through hole, and baffles are fixedly provided at both ends of the moving rod 12.
[0032] The purpose is to make it easier to rotate the screw 3 and save effort. When rotating the screw 3, push the moving rod 12 to one side, and then rotate the moving rod 12 until the moving rod 12 interferes with the push rod 4, then push the moving rod 12 to the other side, and continue to rotate the push rod 4 in the same direction, and repeat the above actions until the screw 3 is in a suitable position.
[0033] In this embodiment, Figure 2-Figure 4 The sliding hole is a prismatic hole, and the sliding rod 5 is a prismatic rod. The prismatic rod is inserted into the prismatic hole to prevent the sliding head 6 from rotating relative to the screw rod 3 when there is a gap between the sliding head 6 and the screw rod 3, thereby avoiding the problem of poor contact.
[0034] When there is a gap between the sliding head 6 and the screw 3, due to the fit between the prismatic rod and the prismatic hole, the gap between the sliding head 6 and the screw 3 always exists, and after starting the welding machine, the current passes through the first electrode, the screw 3, the sliding rod 5, the sliding head 6, the metal ring 8, the new material and the second electrode in sequence to form a circuit to avoid poor contact problems.
[0035] In this embodiment, Figure 1 The two ends of the screw rod 9 are provided with bearings 14, and each bearing 14 is respectively arranged in the bracket 1 near the two ends of the slide groove 11, and the bearing 14 is a deep groove ball bearing.
[0036] The purpose is to reduce the friction between the screw rod 9 and the bracket 1, and because the screw rod 9 and the screw nut 10 have a reverse self-locking function, the screw nut 10 can be prevented from moving freely on the screw rod 9.
[0037] In this embodiment, Figure 1 A handle 15 is fixedly provided at the end of the screw rod 9 that passes through the surface of the bracket 1 , and the handle 15 is provided with anti-slip grooves.
[0038] The purpose is to turn the screw rod 9 more conveniently and more easily.
[0039] In this embodiment, both ends of the push rod 4 are fixed with rotating shafts, the two rotating shafts are parallel to each other, and each rotating shaft is rotatably connected to an ear plate, and the two ear plates are respectively fixed on the screw nut 10 and the threaded sleeve 2.
[0040] A more specific implementation is provided.
[0041] In this embodiment, one end of a shaft is fixedly connected to the outer wall of the threaded sleeve 2 , and the other end of the shaft is rotatably connected to the bracket 1 .
[0042] The method of using the automobile sheet metal positioning welding device of the present invention is as follows:
[0043] Before welding, the metal ring 8 is clamped in the arc-shaped notch 7, and then the moving rod 12 is rotated so that the metal ring 8 on the end of the screw 3 after feeding can abut against the edge of the new material. The first electrode is connected to the screw 3, and the second electrode is connected to the new material. The welding machine is started to temporarily weld the metal ring 8 to the edge of the new material, and the welding machine is closed;
[0044] Then, by turning the handle 15, the screw 9 is rotated to drive the screw nut 10 to move, so as to change the angle of the screw 3, so that the end of the screw 3 pulls the edge of the new material to align with the edge of the old material;
[0045] Finally, start the welding machine, use the first electrode of the welding machine to weld the edge of the new material and the edge of the old material together, and after welding, turn off the welding machine and remove the metal ring 8.
[0046] The automobile sheet metal positioning welding device makes the edge of the new material flush with the edge of the old material to form a gap, and then uses the first electrode to weld the plates on both sides of the gap to ensure the welding quality, so that the flatness of the side panel surface is high, the workload of subsequent grinding and smoothing is reduced, and the sheet metal efficiency is accelerated.
[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A positioning welding device for automobile sheet metal parts, comprising a bracket (1) and a welding machine, wherein the welding machine comprises a first electrode and a second electrode, and is characterized in that: Also includes: A rotating assembly comprises a threaded sleeve (2) and a screw (3), wherein the middle portion of the outer wall of the threaded sleeve (2) is rotatably connected to the bracket (1), the threaded sleeve (2) is threadably connected to the screw (3), and both ends of the screw (3) pass through the threaded sleeve (2), the end of the screw (3) abuts against the edge of the new material, and the first electrode is connected to the screw (3), and the second electrode is connected to the new material, and the welding machine is started so that the end of the screw (3) is welded to the edge of the new material; A push assembly is arranged on the bracket (1), and has a movable end, the movable end is rotatably connected to one end of a push rod (4), and the other end of the push rod (4) is rotatably connected to the outer wall of the end of the threaded sleeve (2) away from the new material. The movable end moves on the bracket (1) so that the end of the screw rod (3) pulls the edge of the new material to align with the edge of the old material.
2. The automobile sheet metal positioning welding device according to claim 1, characterized in that: The end of the screw (3) close to the new material is provided with a radial sliding hole, a sliding rod (5) is slidably connected in the sliding hole, the end of the sliding rod (5) is fixedly connected with a sliding head (6), the sliding head (6) is slidably connected to the plane provided at the end of the screw (3), an arc-shaped notch (7) is provided on the sliding head (6), the central axis of the arc-shaped notch (7) is parallel to the axis of the sliding rod (5), and the arc-shaped notch (7) is used to clamp the metal ring (8). After starting the welding machine, the current passes through the first electrode, the screw (3), the sliding head (6), the metal ring (8), the new material and the second electrode in sequence to form a circuit for welding the metal ring (8) to the new material. When the end of the screw (3) moves, the metal ring (8) rotates in the arc-shaped notch (7) to prevent the end of the screw (3) from driving the new material to twist.
3. The automobile sheet metal positioning welding device according to claim 1, characterized in that: The pushing assembly comprises a screw rod (9) and a screw rod nut (10), a slide groove (11) is provided on the bracket (1), the screw rod (9) is rotatably arranged on the two side walls in the length direction of the slide groove (11), the end of the screw rod (9) passes through the surface of the bracket (1), the screw rod (9) is threadedly matched with the screw rod nut (10), the screw rod nut (10) is rotatably connected to the end of the push rod (4), and the outer surface of the screw rod nut (10) is slidably connected to the side wall of the slide groove (11).
4. The automobile sheet metal positioning welding device according to claim 1, characterized in that: The end of the screw rod (3) away from the new material is provided with a through hole along the radial direction of the screw rod (3), a moving rod (12) is passed through the through hole, and baffles are fixedly provided at both ends of the moving rod (12).
5. The automobile sheet metal positioning welding device according to claim 2, characterized in that: The sliding hole is a prismatic hole, and the sliding rod (5) is a prismatic rod. The prismatic rod is inserted into the prismatic hole to prevent the sliding head (6) from rotating relative to the screw rod (3) when a gap exists between the sliding head (6) and the screw rod (3), thereby avoiding the problem of poor contact.
6. The automobile sheet metal positioning welding device according to claim 3, characterized in that: Bearings (14) are provided at both ends of the screw rod (9), and each bearing (14) is respectively arranged in the bracket (1) near the two ends of the slide groove (11).
7. The automobile sheet metal positioning welding device according to claim 3, characterized in that: A handle (15) is fixedly provided at the end of the screw rod (9) that passes through the surface of the bracket (1), and the handle (15) is provided with anti-slip grooves.
8. The automobile sheet metal positioning welding device according to claim 3, characterized in that: Both ends of the push rod (4) are fixed with rotating shafts, the two rotating shafts are parallel to each other, and each rotating shaft is rotatably connected to an ear plate, and the two ear plates are respectively fixed on the screw nut (10) and the threaded sleeve (2).
9. The automobile sheet metal positioning welding device according to claim 6, characterized in that: The bearing (14) is a deep groove ball bearing.
10. The automobile sheet metal positioning welding device according to claim 1, characterized in that: One end of a shaft rod is fixedly connected to the outer wall of the threaded sleeve (2), and the other end of the shaft rod is rotatably connected to the bracket (1).