Laser welding product positioning device

Abstract

The utility model relates to a laser welding product positioning device which comprises a base, a lower fixing plate and an upper fixing plate. The lower fixing plate is fixed to the base, a positioning pin and a first magnet are arranged on the lower fixing plate, and a lower groove matched with a product to be welded in shape is formed in the area defined by the positioning pin and the first magnet; the upper fixing plate is provided with a second magnet corresponding to the first magnet and a positioning hole matched with the positioning pin, a welding receding space is formed in the area defined by the positioning hole and the second magnet, and an upper groove matched with a product to be welded in shape is formed in the area defined by the welding receding space. Compared with the prior art, the welding device is low in cost, easy and convenient to operate and capable of improving the welding efficiency and the product percent of pass.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a laser welding product positioning device. Background Art

[0002] Generally, after setting the welding parameters and planning the welding path in laser welding, it is necessary to accurately fix the position of the workpiece to be welded to ensure the consistency of the welding effect of each product, thereby improving the qualified rate and working efficiency of product welding; most laser welding workbenches do not have a fixing device for fixing the workpiece to be welded. When precise control of welding accuracy is required, a fixing device is needed to accurately fix the workpiece to be welded.

[0003] Chinese invention patent CN217529603U discloses a workpiece fixing mechanism for laser welding and a laser welding machine, which uses a clamping plate to rotate relatively along the upper end of the machine base driven by a cylinder assembly to complete the clamping or release of the workpiece to be welded. However, the structure of this device is relatively complex, and the welding slag and spatter generated during the welding process may also contaminate the mechanism, affecting its performance and service life. Therefore, it is necessary to design a laser welding fixing device with low cost and simple operation to improve the welding efficiency and product qualified rate. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned prior art and provide a laser welding fixing device with low cost and simple operation to improve the welding efficiency and product qualified rate.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The utility model provides a laser welding product positioning device, which includes a base, a lower fixing plate and an upper fixing plate;

[0007] The lower fixing plate is fixed on the base, and a positioning pin and a first magnet are arranged on the lower fixing plate. A lower groove adapted to the shape of the product to be welded is arranged within the enclosed area of the positioning pin and the first magnet;

[0008] The upper fixing plate is provided with a second magnet corresponding to the first magnet and a positioning hole matching the positioning pin. A welding clearance is arranged within the enclosed area of the positioning hole and the second magnet, and an upper groove adapted to the shape of the product to be welded is arranged within the enclosed area of the welding clearance.

[0009] Further, raised dot patterns are arranged on the inner walls of the lower groove and the upper groove.

[0010] Further, elastic elements are arranged on the inner walls of the lower groove and the upper groove.

[0011] Further, the elastic element is a spring piece.

[0012] Further, the inner walls of the lower groove and the upper groove are coated with elastic materials.

[0013] Further, the length of the lower fixing plate is greater than that of the upper fixing plate.

[0014] Further, screw holes are provided on the base.

[0015] Further, air gaps are formed at the edges of the lower groove and extend to the edges of the lower fixing plate.

[0016] Further, the outer wall of the positioning pin is provided with threads. After the positioning pin passes through the positioning hole, it is higher than the upper surface of the upper fixing plate.

[0017] Further, the welding clearance is double C-shaped.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The utility model provides a positioning device for laser welding products, including a base, a lower fixing plate and an upper fixing plate. A positioning pin and a first magnet are provided on the lower fixing plate. A lower groove adapted to the shape of the product to be welded is arranged within the enclosed area of the positioning pin and the first magnet, which can accurately position the product to be welded. A second magnet corresponding to the first magnet and a positioning hole matching the positioning pin are provided on the upper fixing plate. The upper fixing plate and the lower fixing plate can be quickly aligned through the cooperation of the positioning pin and the positioning hole. The product to be welded can be fixed and compacted by the magnetic attraction between the first magnet and the second magnet, so that the welding gap at the welding position of the product to be welded is smoothly matched. A welding clearance is arranged within the enclosed area of the positioning hole and the second magnet, which can expose the position to be welded for welding the product. An upper groove adapted to the shape of the product to be welded is arranged within the enclosed area of the welding clearance, which can prevent the product to be welded from moving during the welding process, resulting in unqualified welded products. The above device is low in cost and simple to operate, and can improve the welding efficiency and the product qualification rate.

[0020] 2. The utility model is provided with raised dot patterns on the inner walls of the lower groove and the upper groove, which can prevent the product to be welded from sliding during the welding process and better fix the product to be welded. Elastic elements, such as spring pieces, are arranged on the inner walls of the lower groove and the upper groove, or elastic materials are coated on the inner walls of the lower groove and the upper groove, which can adapt to the situation that there are slight errors in the dimensions of the products to be welded in actual production and can also better fix the products to be welded.

[0021] 3. An air gap is provided at the edge of the lower groove of the present utility model, extending to the edge of the lower fixing plate, which can avoid excessive heat concentration in a local area, reduce stress concentration caused by differences in thermal expansion of materials, and improve the product qualification rate. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the related structure of the lower fixing plate;

[0023] Figure 2 It is an exploded view of the related structure of the lower fixing plate

[0024] Figure 3 It is a schematic diagram of the related structure of the upper fixing plate;

[0025] Figure 4 It is a side view of the present utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the product to be welded;

[0027] Description of the reference numerals: 1. Base; 2. Lower fixing plate; 3. Positioning pin; 4. First magnet; 5. Product to be welded; 6. Upper fixing plate; 7. Positioning hole; 8. Welding clearance. Detailed Embodiment

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more unless otherwise specifically defined.

[0031] Embodiment:

[0032] This embodiment provides a laser welding product positioning device, which includes a base 1, a lower fixing plate 2, and an upper fixing plate 6. As Figure 1 shown, the lower fixing plate 2 is fixed on the base 1, and the base 1 is provided with screw holes. The lower fixing plate 2 is provided with two positioning pins 3 and two first magnets 4. As Figure 2 shown, a lower groove adapted to the shape of the product 5 to be welded is provided within the enclosed area of the positioning pins 3 and the first magnets 4. The structural schematic diagram of the product 5 to be welded is as Figure 5 shown, including an upper part and a lower part. After preliminary fitting through positioning hemming, the product 5 to be welded is placed in the lower groove after preliminary fitting, and the X / Y direction position of the product 5 to be welded can be accurately positioned. An air gap is provided at the edge of the lower groove and extends to the edge of the lower fixing plate 2, which can avoid excessive heat concentration in a local area and reduce stress concentration caused by material thermal expansion differences, thereby improving the product qualification rate.

[0033] As Figure 3 shown, the length of the upper fixing plate 6 is less than that of the lower fixing plate 2. The upper fixing plate 6 is provided with second magnets corresponding to the first magnets 4 and positioning holes 7 matching the positioning pins 3. A double C-shaped welding clearance 8 is provided within the enclosed area of the positioning holes 7 and the second magnets, and an upper groove adapted to the shape of the product 5 to be welded is provided within the enclosed area of the welding clearance 8. Through the adsorption force of the first magnets and the second magnets, the upper fixing plate 6 can press the product 5 to be welded, and the Z direction of the product to be welded is positioned, finally completing the accurate positioning of the product.

[0034] In a preferred embodiment, raised dot patterns are provided on the inner walls of the lower groove and the upper groove, which can prevent the product 5 to be welded from sliding during the welding process, keep the product 5 to be welded fixed, and make the welding gap at the welding position fit smoothly.

[0035] In another preferred embodiment, elastic elements, such as spring pieces, are provided on the inner walls of the lower groove and the upper groove; in another preferred embodiment, the inner walls of the lower groove and the upper groove are coated with high-temperature resistant elastic materials. The above two methods can adapt to the situation where there are slight errors in the dimensions of the product 5 to be welded in actual production, and can also better fix the product 5 to be welded.

[0036] As Figure 4As shown, after the positioning pin 3 passes through the positioning hole 7, it is higher than the upper surface of the upper fixing plate 6. In a preferred embodiment, the outer wall of the positioning pin 3 is provided with threads, and the connection between the upper fixing plate 6 and the lower fixing plate 2 can be further tightened by a nut.

[0037] When using the above laser welding fixing device, the specific steps are as follows:

[0038] (1) Lock the base 1 to the welding workbench;

[0039] (2) Fix the lower fixing plate 2 on the base 1 and lock it;

[0040] (3) After the product 5 to be welded is preliminarily fitted, place it in the lower groove on the lower fixing plate 2;

[0041] (4) Align the positioning hole 7 on the upper fixing plate 6 with the positioning pin 3 on the lower fixing plate 2, and use the adsorption force of the first magnet and the second magnet to press the upper fixing plate 6 against the product 5 to be welded;

[0042] (5) The laser passes through the welding clearance 8 to weld the product 5 to be welded.

[0043] The above laser welding fixing device has low cost and simple operation, can make the welding positions of each product the same, and improve the welding efficiency and product qualification rate.

[0044] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or replacements, and these modifications or replacements should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A laser welding product positioning device, characterized in that, It includes a base (1), a lower fixing plate (2) and an upper fixing plate (6); The lower fixing plate (2) is fixed on the base (1). A positioning pin (3) and a first magnet (4) are provided on the lower fixing plate (2). A lower groove adapted to the shape of the product to be welded (5) is provided within the enclosed area of the positioning pin (3) and the first magnet (4); On the upper fixing plate (6), a second magnet corresponding to the first magnet (4) and a positioning hole (7) matching the positioning pin (3) are provided. A welding clearance (8) is provided within the enclosed area of the positioning hole (7) and the second magnet. An upper groove adapted to the shape of the product to be welded (5) is provided within the enclosed area of the welding clearance (8).

2. The laser welding product positioning device according to claim 1, characterized in that, Raised dot patterns are provided on the inner walls of the lower groove and the upper groove.

3. The laser welding product positioning device according to claim 1, characterized in that, Elastic elements are provided on the inner walls of the lower groove and the upper groove.

4. A laser welding product positioning device according to claim 3, characterized in that, The elastic element is a spring piece.

5. A laser welding product positioning device according to claim 1, characterized in that, Elastic materials are coated on the inner walls of the lower groove and the upper groove.

6. The positioning device for laser welding products according to claim 1, characterized in that, The length of the lower fixing plate (2) is greater than that of the upper fixing plate (6).

7. A laser welding product positioning device according to claim 1, characterized in that, Screw holes are provided on the base (1).

8. A laser welding product positioning device according to claim 1, characterized in that, An air gap is provided at the edge of the lower groove and extends to the edge of the lower fixing plate (2).

9. The positioning device for laser welding products according to claim 1, characterized in that, External threads are provided on the outer wall of the positioning pin (3). After the positioning pin (3) passes through the positioning hole (7), it is higher than the upper surface of the upper fixing plate (6).

10. A laser welding product positioning device according to claim 1, characterized in that, The welding clearance (8) is double C-shaped.

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