Welding spot welding auxiliary device compatible with multiple vehicle types
By introducing a guide shaft and elastic element structure into the welding and spot welding device, the linkage between the copper pad and the connecting block is realized, which solves the compatibility problem of different vehicle models, improves production efficiency and positioning accuracy, and reduces production costs.
Patent Information
- Application Number
- CN202520297050.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing welding and spot welding equipment is difficult to be compatible with the exterior surfaces of different car models, resulting in wasted production steps and increased costs. Furthermore, the copper pads are not convenient for electric welding positioning.
Design a welding auxiliary device compatible with multiple vehicle models. By setting a guide shaft and an elastic element between the copper pad and the connecting block, the guide shaft passes through the through hole of the connecting block and is fixedly connected to the copper pad. The force of the elastic element makes the copper pad fit with the connecting block. The guide groove guides the welding gun boom, thereby eliminating the angle and gap of different vehicle models.
Reduce production steps, improve production efficiency, simplify production processes, reduce costs, and improve welding positioning accuracy.
Smart Images
Figure CN223932917U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive welding technology, and in particular to a welding spot welding auxiliary device compatible with multiple vehicle models. Background Technology
[0002] When spot welding the exterior surfaces of vehicles, copper pads are needed to adhere to the surface for spot welding to protect the weld points from distortion. Due to the current production line planning requirements, one welding fixture is compatible with different vehicle models. Different vehicle models have different surface flatness. In order to ensure a flat and aesthetically pleasing weld point, it is usually necessary to manually disassemble and switch the copper pads at different surfaces or use cylinders to switch them so that the copper pads adhere to the surface. This results in wasted production steps and increased production costs. At the same time, the existing copper pads are just simple solid structures, which are not convenient for welding workers to position for spot welding. Therefore, a welding spot welding auxiliary device that is compatible with multiple vehicle models is needed. Utility Model Content
[0003] The present invention aims to solve at least one or more technical problems existing in the prior art. To this end, the present invention proposes a welding spot welding auxiliary device compatible with multiple vehicle models.
[0004] In a first aspect, this application provides a welding spot welding auxiliary device compatible with multiple vehicle models, comprising:
[0005] A copper pad, wherein a guide groove is formed on the surface of the copper pad along the length direction;
[0006] A connecting block is stacked on top of the copper pad block, and the connecting block has through holes along the thickness direction;
[0007] A guide shaft, one end of which is provided with a limit block, and the other end passes through the through hole and is fixedly connected to the copper pad block;
[0008] An elastic element is coaxially sleeved on the surface of the guide shaft, and its two ends respectively abut against the surfaces of the copper pad and the limiting block.
[0009] In some possible embodiments, multiple through holes and guide shafts are provided, with the multiple through holes spaced apart from each other.
[0010] In some possible embodiments, the diameter of the through hole is larger than the diameter of the guide shaft.
[0011] In some possible embodiments, one end of the guide groove extends through the side surface of the copper pad along the width direction of the copper pad.
[0012] In some possible embodiments, the copper pad has a recessed groove on the same surface as the guide groove, the bottom surface of the recessed groove has a first connecting part, and one end of the guide shaft is connected to the first connecting part.
[0013] In some possible embodiments, the sinkhole is used to accommodate at least a portion of the connecting block.
[0014] In some possible embodiments, a second connecting portion is provided on the surface of the connecting block, offset from the through hole, and the second connecting portion is used for fixed connection with an external execution structure.
[0015] In some possible embodiments, the limiting block protrudes from the circumferential surface of the guide shaft.
[0016] In some possible embodiments, the elastic element is in a state of compression deformation.
[0017] In some possible embodiments, the elastic element includes one of a spring or an elastic rubber ring.
[0018] Compared with the prior art, the technical solutions provided in the embodiments of this application have at least the following beneficial effects:
[0019] 1) The welding spot welding auxiliary device of this application sets a linkage guide shaft and an elastic element structure between the copper pad and the connecting block. One end of the guide shaft passes through the through hole opened in the connecting block and is fixedly connected to the copper pad. By making the diameter of the through hole larger than the diameter of the guide shaft, a limiting block is set at one end of the guide shaft, and an elastic element is sleeved on the guide shaft between the connecting block and the limiting block. In the initial state without spot welding, the copper pad and the connecting block are in contact under the force of the spring element. The copper pad will have different angles and gaps with the appearance surface of different car models. During spot welding, the welding gun arm hits the copper pad. Under the force of the welding gun, the copper pad will move towards the appearance surface along with the guide rod. Because the guide shaft and the connecting block are clearance fit, the angle and gap with the appearance surface in the initial state can be eliminated during the movement of the copper pad. Finally, the movement stops when the copper pad is in contact with the appearance surface. At this time, the welding gun is energized for welding. When not spot welding, the copper pad retracts to the initial state under the force of the spring. In this way, production steps are reduced and production efficiency is improved.
[0020] 2) The copper pad of this application has a guide groove on its surface. One end of the guide groove extends through the side surface of the copper pad along the width direction of the copper pad. When the position of the copper pad is determined, the guide groove can guide the welding head of the welding gun arm, which is convenient for the workers to position during the spot welding process and improves work efficiency.
[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a structural schematic diagram of the vehicle manufacturing welding process according to an embodiment of this application;
[0024] Figure 2 This is a first structural schematic diagram of a welding joint auxiliary device according to an embodiment of this application;
[0025] Figure 3 This is a second structural schematic diagram of a welding joint auxiliary device according to an embodiment of this application;
[0026] Figure 4 This is a cross-sectional view of a welding joint auxiliary device shown according to an embodiment of this application;
[0027] Figure 5 This is a schematic diagram of the structure of the copper pad according to an embodiment of this application;
[0028] Figure 6 This is a schematic diagram of the welding spot welding structure of the first vehicle model according to an embodiment of this application;
[0029] Figure 7 This is a schematic diagram of the welding structure of the second vehicle model according to an embodiment of this application.
[0030] Figure label:
[0031] 100. Vehicle shell; 101. First model; 102. Second model;
[0032] 200. Spot welding auxiliary device;
[0033] 210. Copper pad; 211. Guide groove; 212. Sinking groove; 2121. First connecting part;
[0034] 220. Connecting block; 221. Second connecting part; 222. Through hole;
[0035] 230. Guide shaft; 231. Limiting block; 240. Elastic element;
[0036] 300. Spot welding equipment. Detailed Implementation
[0037] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.
[0038] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0040] Please see Figure 1 , Figure 1 The diagram illustrates the structural schematic of the welding process in vehicle production according to this embodiment. When spot welding the exterior surface of the vehicle body, the process typically involves the following steps: as the vehicle body moves along the production line to the welding area, the spot welding auxiliary device 200 is transferred to the spot welding position on the vehicle body by an external actuator. Then, the worker manually holds the spot welding device 300 to perform spot welding. The spot welding auxiliary device 200 consists of a copper pad and a connecting block, among other structures. During the spot welding process, the stationary arm of the welding torch rests against the inner surface of the vehicle body, and the moving arm of the welding torch strikes the copper pad. Under the force of the welding torch, the copper pad moves towards the exterior surface along with the guide rod. Because the guide shaft and the connecting block are in clearance fit, the angle and gap between the copper pad and the exterior surface can be eliminated during the movement of the copper pad. Finally, the movement stops when the copper pad is in contact with the exterior surface, at which point the welding torch is energized for welding. When not spot welding, the copper pad retracts to its initial state under the force of the spring. However, due to the current production line planning requirements, a single welding fixture is compatible with different vehicle models. The spot welding auxiliary device 200 in this embodiment achieves compatibility with multiple different vehicle models without the need for a switching mechanism. It has a simple structure, low cost, and effectively improves on-site production steps.
[0041] The structure and functional implementation principle of the above-mentioned spot welding auxiliary device 200 will be described in detail below with reference to several embodiments;
[0042] Please see Figures 2 to 5This embodiment provides a welding spot welding auxiliary device 200 compatible with multiple vehicle models. The spot welding auxiliary device 200 includes a copper pad 210, a connecting block 220, a guide shaft 230, and an elastic element 240. The copper pad 210 can be a rectangular block, and a guide groove 211 is formed on the surface of the copper pad 210 along the length direction. The guide groove 211 can guide the tip of the welding gun during the spot welding process due to the large mass and volume of the welding gun, helping the worker to position the welding and improving the efficiency of spot welding. The connecting block 220 is stacked with the copper pad 210, and the connecting block 220 has a through hole 222 along the thickness direction. One end of the guide shaft 230 is provided with a limiting block 231, and the other end passes through the through hole 222 and is fixedly connected to the copper pad 210. The elastic element 240 is coaxially sleeved on the surface of the guide shaft 230, and its two ends abut against the surfaces of the copper pad 210 and the limiting block 231, respectively.
[0043] In some embodiments, one end of the guide groove 211 extends through the side surface of the copper pad 210 along the width direction of the copper pad 210, that is, the guide groove 211 is stepped after longitudinal cutting along the copper pad 210. At the same time, the copper pad 210 has a recessed groove 212 on the same surface as the guide groove 211. A first connecting part 2121 is provided on the bottom surface of the recessed groove 212. One end of the guide shaft 230 is connected to the first connecting part 2121. The recessed groove 212 is provided to accommodate part of the connecting block 220. The shape of the recessed groove 212 can be stepped. The first connecting part 2121 can be a blind hole or a threaded hole. Thus, the connection method between one end of the guide shaft 230 and the first connecting part 2121 can be welding or threaded connection.
[0044] Of course, the first connecting part 2121 can also be of other shapes and structures, without limitation, provided that it satisfies the requirement of fixed connection with one end of the guide shaft 230. The number of first connecting parts 2121 is the same as the number of guide shafts 230. The number of guide shafts 230 can be more than two. In this way, the relative position of the copper pad 210 and the connecting block 220 is further guaranteed during the pressing process, avoiding misalignment during the pressing or recovery process.
[0045] Please see Figure 2 , Figure 4 and Figure 5 The number of through holes 222 and guide shaft 230 is the same, and the multiple through holes 222 are spaced apart. The diameter of the through hole 222 is larger than the diameter of the guide shaft 230, that is, the connecting block 220 and the guide shaft 230 are in clearance fit. When the surface of a certain vehicle model has a large curvature, the angle and gap between the copper pad and the vehicle surface in the initial state can be eliminated during the movement of the copper pad.
[0046] Optionally, a second connecting part 221 is provided on the top surface of the connecting block 220, offset from the through hole 222. The second connecting part 221 is used for fixed connection with the external execution structure. It should be noted that the entire spot welding auxiliary device 200 moves by being fixedly connected to the external execution structure through the second connecting part 221. The external execution structure is a prior art product. The specific structure and functional implementation principle of the external execution structure will not be described in detail here. The second connecting part 221 can be a blind hole or a threaded hole. The specific shape depends on the setting of the connection point of the external execution structure and is not limited here.
[0047] Optionally, a limiting block 231 is provided at one end of the guide shaft 230, protruding from the circumferential surface of the guide shaft 230. This allows the guide shaft 230 to better limit and stop the elastic element 240. The elastic element 240 includes either a spring or an elastic rubber ring, with a spring being preferred. The elastic element 240 is fitted onto the circumferential surface of the guide shaft 230 and can be configured to always be in a compressed deformation state. This ensures that, in the initial state without spot welding, the copper pad 210 and the connecting block 220 are in contact under the force of the spring.
[0048] It is understandable that the outline diameter of the elastic element 240 is larger than the diameter of the through hole 222. The two ends of the elastic element 240 can be fixedly connected to the top surface of the connecting block 220 and the limiting block 231. Of course, they can also directly contact the surface of the connecting block 220. In this way, during the spot welding process, the copper pad 210 can be reset after being pressed down along the guide shaft 230.
[0049] Please see Figure 6 and Figure 7 During spot welding of the first vehicle model 101, the welding torch arm of the spot welding device 300 strikes the copper pad 210, causing it to directly adhere to the vehicle's exterior surface and stop moving. At this point, the elastic element 240 does not undergo significant deformation; that is, the copper pad 210 is pressed down a small distance to achieve adhesion. During spot welding of the second vehicle model 102, due to the greater curvature of the vehicle's exterior surface, the elastic element 240 undergoes significant deformation; that is, the copper pad 210 is pressed down a greater distance to achieve adhesion. During the movement of the copper pad, the initial angle and gap with the exterior surface are eliminated. Thus, the spot welding auxiliary device 200 achieves compatibility with different vehicle models.
[0050] It should be noted that in the above embodiment, the welding spot welding auxiliary device sets a linkage guide shaft 230 and an elastic element 240 structure between the copper pad 210 and the connecting block 220. One end of the guide shaft 230 passes through the through hole 222 opened in the connecting block 220 and is fixedly connected to the copper pad 210. By making the diameter of the through hole 222 larger than the diameter of the guide shaft 230, a limiting block 231 is set at one end of the guide shaft 230, and an elastic element 240 is sleeved on the guide shaft 230 between the connecting block 220 and the limiting block 231. In the initial state without spot welding, the copper pad 210 and the connecting block 220 are in contact under the action of the spring. The copper pad 210 will have different angles and gaps with the appearance surface of different vehicle models. During spot welding, the welding torch arm strikes the copper pad 210. Under the force of the welding torch, the copper pad 210 moves towards the outer surface along with the guide rod. Because the guide shaft 230 and the connecting block 220 are clearance-fitted, the angle and gap between the copper pad 210 and the outer surface can be eliminated during the movement of the copper pad 210. Finally, the movement stops when the copper pad 210 is in contact with the outer surface. At this time, the welding torch is powered on for welding. When not spot welding, the copper pad 210 retracts to the initial state under the force of the spring. In this way, production steps are reduced and production efficiency is improved.
[0051] The copper pad 210 has a guide groove 211 on its surface. One end of the guide groove 211 extends through the width of the copper pad 210 to the side surface of the copper pad 210. When the position of the copper pad 210 is determined, the guide groove 211 can guide the welding head of the welding gun arm, which is convenient for the workers to position during the spot welding process and improves work efficiency.
[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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 on the utility model.
[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0054] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A welding spot welding auxiliary device compatible with multiple vehicle models, characterized in that, include: A copper pad (210) has a guide groove (211) on its surface along the length direction. A connecting block (220) is stacked with the copper pad block (210), and the connecting block (220) has a through hole (222) along the thickness direction. A guide shaft (230) is provided at one end with a limit block (231), and the other end passes through the through hole (222) and is fixedly connected to the copper pad (210); The elastic element (240) is coaxially sleeved on the surface of the guide shaft (230), and its two ends respectively abut against the surfaces of the copper pad (210) and the limiting block (231).
2. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 1, characterized in that, Multiple through holes (222) and guide shafts (230) are provided, with the multiple through holes (222) spaced apart from each other.
3. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 2, characterized in that, The diameter of the through hole (222) is larger than the diameter of the guide shaft (230).
4. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 1, characterized in that, One end of the guide groove (211) extends through the copper pad (210) to the side surface of the copper pad (210) along the width direction.
5. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 1, characterized in that, The copper pad (210) has a recessed groove (212) on the same surface as the guide groove (211), and a first connecting part (2121) is provided on the bottom surface of the recessed groove (212). One end of the guide shaft (230) is connected to the first connecting part (2121).
6. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 5, characterized in that, The sinkhole (212) is used to accommodate at least a portion of the connecting block (220).
7. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 1, characterized in that, The surface of the connecting block (220) is provided with a second connecting part (221) offset from the through hole (222), and the second connecting part (221) is used to fix the connection with the external execution structure.
8. The welding spot welding auxiliary device compatible with multiple vehicle models according to claim 1, characterized in that, The limiting block (231) protrudes from the circumferential surface of the guide shaft (230).
9. A welding spot welding auxiliary device compatible with multiple vehicle models according to claim 1, characterized in that, The elastic element (240) is in a state of compression deformation.
10. A welding spot welding auxiliary device compatible with multiple vehicle models according to claim 9, characterized in that, The elastic element (240) includes one of a spring and an elastic rubber ring.