Laser welding shape correcting mechanism
By combining a vacuum chamber and a refrigerant system, the problems of weld interruption and thermal deformation caused by traditional aluminum welding straightening mechanisms are solved, achieving pressure-free welding, single-sided adsorption and effective heat release, thus improving welding quality and product stability.
Patent Information
- Application Number
- CN202423220785.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Traditional aluminum welding straightening mechanisms lead to weld interruptions, reduced airtightness and appearance pass rates, and high heat output causes thermal deformation of the base plate, making it impossible to effectively release heat during the welding process.
By employing a vacuum chamber and a refrigerant system, combined with the high thermal conductivity of metal, pressure-free, single-sided adsorption is achieved through vacuum adsorption and refrigerant circulation. The refrigerant is used to quickly cool down and release heat during the welding process due to its thermal conductivity.
It achieves pressure-free, single-sided adsorption, adapts to various welding straightening environments, improves welding quality and airtightness, and effectively reduces thermal deformation of products after welding.
Smart Images
Figure CN223833702U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive battery box technology and relates to a laser welding straightening mechanism. Background Technology
[0002] With the rise of the new energy vehicle industry, the quality of the battery box, as a crucial safety component, directly determines the safety of new energy vehicles. Laser welding, a key process in battery box welding, directly impacts the welding quality and airtightness of the battery box. Since the laser head's posture and the actual position of the base plate during welding are critical factors in ensuring laser welding quality, base plate straightening and its method are also crucial. Traditional aluminum welding straightening mechanisms use reverse physical support followed by physical clamping to deform the product in the opposite direction, ultimately ensuring that the deformations before and after welding cancel each other out to achieve product flatness. Traditional physical straightening typically uses the reaction force of pad support and cylinder clamping. Clamping and support work in two directions, and the physical clamping arm of the straightening mechanism interferes with the laser weld bead, directly affecting the welding length per pass. Weld interruption ultimately leads to a significant decrease in airtightness and appearance pass rates. Meanwhile, the force concentration at the contact point of the traditional support block and clamping arm will cause obvious indentations on the product surface due to the relatively soft aluminum material. This is not allowed for exterior parts such as battery boxes. During the laser welding process, since the battery box base plate is welded as a whole piece in one go, the high heat output during the welding process will cause thermal deformation of the base plate. In order to avoid the dimensional deviation and abnormal welding quality of the product after welding caused by thermal deformation of the base plate, a welding correction mechanism needs to be designed. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a laser welding straightening mechanism that can achieve the characteristics of no pressure damage, single-sided adsorption, and regional force application, and can adapt to various welding straightening environments. At the same time, it can utilize the high thermal conductivity of metal to effectively release the heat stored on the product during the welding process.
[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a laser welding straightening mechanism, characterized in that it includes a mechanism body and a vacuum interface, a refrigerant inlet and a refrigerant outlet disposed on the mechanism body. The mechanism body has a built-in vacuum cavity and a refrigerant cavity. The vacuum interface is connected to the vacuum cavity. The refrigerant cavity is connected to the refrigerant inlet and the refrigerant outlet respectively. The product to be processed is placed on the mechanism body and fixed by vacuum adsorption. After the refrigerant is introduced, the product is brought into contact with the mechanism body, which can quickly cool down and reduce the product deformation caused by high temperature.
[0005] In the aforementioned laser welding correction mechanism, the mechanism body is provided with a grid of protrusions.
[0006] In the aforementioned laser welding correction mechanism, a sealing strip is provided on the grid-like protrusion, and the sealing strip is embedded in the grid-like protrusion to form the required sealing area.
[0007] In the aforementioned laser welding correction mechanism, a drain outlet is provided on the mechanism body, and the drain outlet is connected to the vacuum chamber.
[0008] In the aforementioned laser welding correction mechanism, multiple fixed supports are installed around the main body of the mechanism.
[0009] Compared with the prior art, the advantages of this utility model are that it can utilize the characteristics of vacuum chamber to achieve no pressure damage, single-sided adsorption, and regional force, and can adapt to various welding straightening environments. At the same time, through the refrigerant inlet, refrigerant outlet and refrigerant chamber, the high thermal conductivity of metal can be used to effectively release the heat stored on the product during the welding process. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this laser welding correction mechanism. Detailed Implementation
[0011] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0012] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0013] In the diagram: 100; Vacuum interface 200; Refrigerant inlet 300; Refrigerant outlet 400; Drain outlet 500; Mesh protrusion 600; Sealing strip 700; Fixing bracket 800.
[0014] like Figure 1As shown, this laser welding straightening mechanism mainly includes a mechanism body 100 and a vacuum interface 200, a refrigerant inlet 300, and a refrigerant outlet 400 disposed on the mechanism body 100. The mechanism body 100 contains a vacuum chamber and a refrigerant chamber. The vacuum interface 200 is connected to the vacuum chamber. The refrigerant can be water, oil, etc., and the refrigerant chamber is an independent chamber that is not interconnected with the vacuum chamber. Here, pressure-free and one-sided adsorption can be achieved through the vacuum interface 200 and the vacuum chamber. A drain port 500 is provided on the mechanism body 100 and is connected to the vacuum chamber, so that water in the vacuum chamber can be discharged through the drain port 500. The refrigerant chamber is connected to the refrigerant inlet 300 and the refrigerant outlet 400. The product to be processed is placed on the mechanism body 100 and fixed in reverse by vacuum adsorption. After the refrigerant is introduced, the product can be quickly cooled and the product deformation caused by high temperature can be reduced after it is attached to the main body 100. Here, the high thermal conductivity of metal can be utilized through the refrigerant inlet 300, refrigerant outlet 400 and refrigerant cavity to quickly remove the heat on the main body 100 through refrigerant circulation, so as to effectively release the heat stored on the product during the welding process. As a further optimization, in order to facilitate heat conduction and release, the main body 100 is provided with mesh-like protrusions 600. At the same time, in order to facilitate sealing, sealing strips 700 are provided on the mesh-like protrusions 600. The sealing strips 700 are embedded in the mesh-like protrusions 600 and form the required sealing area. Multiple fixing brackets 800 are installed around the main body 100. The fixing brackets 800 are used for fixing and the fixing position is flexible.
[0015] The above-mentioned mechanisms enable the product to achieve the characteristics of no pressure damage, single-sided adsorption, and regional force application, which can adapt to various welding and straightening environments. At the same time, the high thermal conductivity of metals can be used to effectively release the heat stored on the product during the welding process.
[0016] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A laser welding straightening mechanism, characterized in that, It includes a main body and a vacuum interface, a refrigerant inlet, and a refrigerant outlet set on the main body. The main body has a built-in vacuum chamber and a refrigerant chamber. The vacuum interface is connected to the vacuum chamber, and the refrigerant chamber is connected to the refrigerant inlet and the refrigerant outlet. The product to be processed is placed on the main body and fixed in reverse by vacuum adsorption. After the refrigerant is introduced, the product is brought into contact with the main body, which can quickly cool down and reduce the product deformation caused by high temperature.
2. The laser welding straightening mechanism as described in claim 1, characterized in that, The mechanism body is provided with a grid of protrusions.
3. The laser welding straightening mechanism as described in claim 2, characterized in that, The mesh-like protrusions are provided with sealing strips, which are embedded in the mesh-like protrusions and form the required sealing area.
4. A laser welding straightening mechanism as described in claim 1, 2, or 3, characterized in that, The main body of the mechanism is provided with a drain outlet, which is connected to the vacuum chamber.
5. A laser welding straightening mechanism as described in claim 1, 2, or 3, characterized in that, Multiple fixed supports are installed around the main body of the mechanism.