Handheld copper plate traceless welding mechanism
Patent Information
- Application Number
- CN202521729900.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-14
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-08-14
AI Technical Summary
然而，这些技术存在显著缺陷：一方面，固定式结构缺乏操作灵活性，难以适应现场移动性焊接作业，操作便利性差；另一方面，传统手持设计的无痕焊机构需至少两人协同操作，人力成本高，且随着工艺节拍提升，其操作更费时，对操作者技能要求高，无法满足高效生产需求
[0011]本实用新型的有益效果是：本手持铜板无痕焊机构采用铬镍铜材质的铜板，耐用性强且变形轻微，配合随型打磨处理，能有效分散焊接热量与压力，显著减少焊接区域的凸起、凹陷等痕迹，保证车身外板焊接的无痕效果，提升焊接质量。同时，精钢弹簧的设置使其可适应水平面及略带斜度的平面作业，适配多车型、多工位手工线外板焊接，仅需一人即可操作，降低了对操作者技能的要求和人力成本，操作流程简单易懂，提升了作业便利性。
Smart Images
Figure CN224658471U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of welding technology, specifically relating to a handheld copper plate non-marking welding mechanism. Background Technology
[0002] In the field of automotive body-in-white welding, especially in the welding process of outer panels such as wheel arches, door frames, side panels and roof, the welding area often produces obvious welding marks such as protrusions and depressions due to high temperature and current pressure. This seriously affects the integrity of the panel appearance, thereby increasing the failure rate of subsequent body assembly and reducing the overall vehicle welding and appearance qualification rate.
[0003] In existing technologies, various welding aids and non-marking welding mechanisms have emerged to reduce welding marks. For example, a single fixed copper plate is used as the heat transfer medium to disperse heat and pressure, or a fixed unit structure with a handheld design is employed. However, these technologies have significant drawbacks: on the one hand, fixed structures lack operational flexibility, making them unsuitable for mobile welding operations and resulting in poor ease of operation; on the other hand, traditional handheld non-marking welding mechanisms require at least two operators, leading to high labor costs. Furthermore, as the process cycle time increases, operation becomes more time-consuming, demanding higher operator skills and failing to meet the demands of high-efficiency production. Simultaneously, existing mechanisms also suffer from fixed structures, poor adaptability, difficulty in applying to multiple vehicle models and workstations, high maintenance costs, and wasteful replacement of spare parts, hindering further improvements in welding efficiency and quality. Utility Model Content
[0004] The purpose of this invention is to provide a handheld copper plate seamless soldering mechanism to solve the problems existing in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a handheld copper plate seamless soldering mechanism, comprising: Copper plates, made of chromium-nickel copper, are used for direct contact welding of plates; A connecting plate is fixedly connected to the copper plate; A spring, one end of which is detachably connected to the connecting plate, and the other end of which is used to suspend it on the welding torch electrode arm; Fasteners are used to lock and secure the connecting plate to the copper plate. The inner diameter of the spring is smaller than the diameter of the welding torch electrode arm, and it forms an interference fit with the electrode arm through elastic deformation.
[0006] Preferably, the connecting plate is a thin connecting plate, and the copper plate has an internal mounting groove. The spring is screwed into the mounting groove through the opening of the thin connecting plate, and the connecting plate and the copper plate are locked together by screws.
[0007] Preferably, the connecting plate is a bushing-type connecting plate, and the copper plate has an interference fit cavity inside. The bushing-type connecting plate is pressed into the cavity, and the spring is screwed in through the opening of the bushing-type connecting plate and locked by the set screws on both sides to prevent it from falling off.
[0008] Preferably, the welding contact surface of the copper plate is a slightly convex arc surface in the center, with the center height slightly higher than the surrounding edges.
[0009] Preferably, the spring is a stainless steel spring, the length and diameter of which are adapted to the size of the welding torch electrode arm, allowing for adaptive angle adjustment in the horizontal plane and ±15° inclined plane.
[0010] Preferably, an anti-rotation structure is provided between the copper plate and the connecting plate, and the spring displacement is limited by the groove and the partition.
[0011] The beneficial effects of this utility model are as follows: This handheld copper plate seamless welding mechanism uses a chromium-nickel copper plate, which is highly durable and exhibits minimal deformation. Combined with contour grinding, it effectively disperses welding heat and pressure, significantly reducing marks such as protrusions and depressions in the welding area, ensuring a seamless welding effect on the vehicle body exterior panels and improving welding quality. Simultaneously, the inclusion of a precision steel spring allows it to adapt to horizontal and slightly inclined surfaces, making it suitable for multi-vehicle, multi-station manual welding of exterior panels. It requires only one operator, reducing the skill requirements and labor costs for the operator. The operation process is simple and easy to understand, enhancing operational convenience.
[0012] This mechanism features a rational structural design, lightweight construction, and easy disassembly. Replacing copper plate spare parts saves on materials, reduces costs compared to existing mechanisms, and is easier to maintain, resulting in higher cost-effectiveness. It can adapt to the demands of increased process cycles, reduce operation time, improve welding efficiency, and simultaneously enhance safety by lowering the risk of injury from weld spatter. This contributes to improving the overall vehicle welding and appearance pass rate, reducing subsequent body assembly failure rates and workshop maintenance workload, making it suitable for use in automobile manufacturing of all scales. Attached Figure Description
[0013] Figure 1 This is a perspective view of the first structure of this utility model; Figure 2 This is a cross-sectional view of the second structure of this utility model; Figure 3 This is a perspective view of the first structure of this utility model; Figure 4 This is a cross-sectional view of the second structure of this utility model; Figure 5 This is a schematic diagram illustrating the application of this utility model. Detailed Implementation
[0014] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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 of this disclosure.
[0015] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.
[0016] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.
[0018] like Figure 1 As shown, a handheld copper plate non-marking welding mechanism is provided. This mechanism consists of two parts: the first part is mainly used for welding the outer panel of the door frame; the second part is mainly used for non-marking welding of the outer panel of the top cover.
[0019] like Figure 1 and Figure 2 As shown, the first part consists of a thin connecting plate 1 as the base for installing parts. The first spring 2 is installed by screwing it clockwise through the opening in the thin connecting plate. The thin connecting plate and the first spring are then installed on the first copper plate 3. The first copper plate 3 has an installation groove 4 inside, which can accommodate two springs. The first screw 5 is screwed from the connecting plate into the copper plate, and the first part is now installed.
[0020] like Figure 3 and Figure 4As shown, the second part begins with the bushing-type connecting plate 6 as the base for installing parts. Note that when machining this connecting plate, a negative tolerance needs to be added to the outside to prevent it from not being able to be installed smoothly with the outer copper plate. Install the second spring 7 by screwing it clockwise through the opening of the bushing-type connecting plate, leaving a margin for two layers of springs. Fit the bushing-type connecting plate and the second spring into the interior of the second copper plate 8. Since the bushing-type connecting plate has an interference fit, it needs to be hammered into the interior of the second copper plate. After adjusting the overall structure to be flat, screw in the second screws 9 on both sides as set screws to tighten and prevent the internal connecting plate from falling off. The second part is now installed.
[0021] like Figure 5 As shown, the usage method is as follows: First, check whether the two types of copper plate mechanisms are tight, test whether there is any loosening after collision, and whether the spring fits well inside the copper plate (because the spring model needs to be determined according to the diameter of the electrode arm of the handheld welding gun used; if there is a deviation, the tightness effect will be lost). Check whether there is fine grinding around the copper plate. Pay attention to the points where the copper plate needs to be welded. Be sure to pay attention to whether the outer surface of the copper plate conforms to the shape of the board. It is most suitable for welding relatively flat positions such as the front floor and the outer plate of the top cover, and the quality of the traceless welding is optimal.
[0022] The second step is to check whether the inner diameter of the spring matches the electrode head of the welding torch, whether insertion and removal are convenient, and whether the friction between the spring and the electrode arm is sufficient to prevent it from easily falling off. Then, perform test welding on a sample. After two to three welding attempts, the compatibility between the copper plate mechanism and the welding torch is improved. The third step is to perform welding. First, test two points on the test piece, then remove the welding gun to check if the seamless welding meets the requirements. Then, grind the area around the copper plate and the contact surface. After the debugging is completed, weld all the weld points. After the first welding of this station, check whether it is convenient for the team to use, whether there are any difficult parts to operate, and whether the welding quality meets the standards.
[0023] The fourth step involves grinding every 60-80 weld points on the copper plate. The exact number of grinding sessions will depend on the actual situation. It is estimated that 2000-3000 weld points will require replacement of the copper plate assembly. Other parts will be maintained or replaced as needed.
[0024] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A handheld copper plate seamless soldering mechanism, characterized in that, include: Copper plates, made of chromium-nickel copper, are used for direct contact welding of plates; A connecting plate is fixedly connected to the copper plate; A spring, one end of which is detachably connected to the connecting plate, and the other end of which is used to suspend the welding torch electrode arm; Fasteners are used to lock and secure the connecting plate to the copper plate. The inner diameter of the spring is smaller than the diameter of the welding torch electrode arm, and it forms an interference fit with the electrode arm through elastic deformation.
2. The seamless welding mechanism according to claim 1, characterized in that: The connecting plate is a thin connecting plate with an installation groove inside the copper plate. The spring is screwed into the installation groove through the opening of the thin connecting plate and locked to the copper plate by screws.
3. The seamless welding mechanism according to claim 1, characterized in that: The connecting plate is a bushing type connecting plate. The copper plate has an interference fit cavity inside. The bushing type connecting plate is pressed into the cavity. The spring is screwed in through the opening of the bushing type connecting plate and locked by the set screws on both sides to prevent it from falling off.
4. The seamless welding mechanism according to any one of claims 1-3, characterized in that: The welding contact surface of the copper plate is a slightly convex arc surface in the center, with the center height slightly higher than the surrounding edges.
5. The seamless welding mechanism according to claim 1, characterized in that: The spring is a high-strength steel spring, the length and diameter of which are adapted to the size of the welding torch electrode arm, allowing for adaptive angle adjustment in the horizontal plane and ±15° inclined plane.
6. The seamless welding mechanism according to claim 1, characterized in that: An anti-rotation structure is provided between the copper plate and the connecting plate, and the spring displacement is limited by the cooperation of the groove and the partition.