Seam welding wheel stable in welding and welding equipment

Abstract

The utility model relates to the technical field of roll welding, in particular to a roll welding wheel stable in welding and welding equipment, which comprises a welding wheel body, the welding wheel body is provided with a welding bearing surface, the welding bearing surface comprises a plurality of impressing areas along the circumferential direction, and at least one area is provided with a plurality of raised impressing connecting parts at intervals. According to the utility model, by dividing the imprinting area, the welding parameters and the layout of the imprinting connecting part can be flexibly controlled according to the welding requirements and the characteristics of the material to be welded, so that the welding process is more suitable for diversified application scenes, and the pertinence and effectiveness of welding are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of roll welding technology more specifically, relate to a kind of roll welding wheel and welding equipment of welding stability. BACKGROUND

[0002] In the field of lithium battery production, especially for the tab welding technology of composite current collector, with the continuous improvement of battery energy density and safety, the requirements for welding process are also increasingly strict. Composite current collector, because it combines the insulation of high molecular film and the conductivity of metal plating, becomes one of the key materials to improve battery performance. However, its unique structural characteristics bring challenges to tab welding, because the traditional direct welding method cannot be directly applied to high molecular film containing insulation layer.

[0003] To solve this problem, the industry gradually turns to ultrasonic welding technology, especially ultrasonic roll welding, to meet the dual needs of efficiency and quality in mass production. Compared with traditional pressure welding, ultrasonic roll welding has significant advantages in handling long welds and improving welding efficiency. By rotating the roll welding head driven by a motor and combining ultrasonic vibration energy, a firm metallurgical bond is formed between the tab and the current collector, without the need for additional flux or high temperature environment, thus maintaining the original properties of the material.

[0004] However, the roll welding wheel is provided with continuous protrusions to realize continuous pressure connection, but metal chips are easily produced, affecting the welding quality and reducing product yield.

[0005] The above shortcomings need to be improved. SUMMARY

[0006] To solve or alleviate the problems of material perforation, metal chips and welding firmness in the roll welding process, the utility model provides a kind of roll welding wheel and welding equipment of welding stability.

[0007] The technical scheme of the utility model is as follows:

[0008] A kind of roll welding wheel and welding equipment of welding stability, including welding wheel body, the welding wheel body is provided with welding surface, the welding surface includes a plurality of pressure imprint areas along the circumferential direction, and at least one area is provided with a plurality of protruding pressure imprint connecting parts.

[0009] The above-mentioned roll welding wheel of welding stability gradually decreases in cross-sectional area of the pressure imprint connecting part from near to far along the radial direction of the welding wheel body.

[0010] Further, the cross-sectional area of the pressure imprint connecting part continuously decreases from near to far along the radial direction of the welding wheel body.

[0011] Further, the cross-sectional area of the pressing connection part decreases step by step from the near to the far along the radial direction of the welding wheel body.

[0012] The welding-stable roller welding wheel has the feature that the cross-sectional shape of the pressing connection part is at least one of a rhombus, a rectangle, and a circle.

[0013] Further, the pressing connection parts with different cross-sectional shapes are arranged at intervals or discontinuously.

[0014] The welding-stable roller welding wheel has the feature that the pressing connection parts are uniformly arranged in the pressing area.

[0015] The welding-stable roller welding wheel has the feature that the pressing connection part is divided into a plurality of pressing areas along the axial direction of the welding wheel body, and the pressing connection parts in the plurality of pressing areas are different in spacing and / or shape.

[0016] The welding-stable roller welding wheel has the feature that the welding wheel body and the rotating shaft are in an integrated structure.

[0017] Further, the rotating shaft is provided with a bearing retainer ring.

[0018] Further, the retainer ring is provided with an assembly notch.

[0019] Further, the rotating shaft is provided with a connecting hole at the end.

[0020] A welding-stable welding device comprises the welding-stable roller welding wheel.

[0021] The welding-stable roller welding wheel has the feature that the cross-sectional shape of the pressing connection part is at least one of a rhombus, a rectangle, and a circle.

[0022] 1、The utility model discloses a pressing area, can according to the welding demand and the characteristic of the material to be welded, and flexible control welding parameter and the layout of pressing connection part makes the welding process more adapt to the diversified application scene, improves the pertinence and effectiveness of welding.

[0023] 2、The utility model discloses a pressing connection part with step change cross-sectional area, and the force on the material during welding is gradually increased, realizing the progressive welding process, and the progressive stress mode helps to avoid local stress concentration, so that the material can disperse stress more evenly when subjected to tensile force, reduces the damage to the material, prevents the generation of perforation and metal debris, and the pressing connection part with step change can have sufficient height, thereby ensuring the welding quality. DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0025] Figure 1 It is a perspective structural schematic view of the present application;

[0026] Figure 2 It is a front view structural schematic view of the present application;

[0027] Figure 3 It is Figure 2 It is a structure enlarged view of position A in the middle;

[0028] Figure 4 It is a right view structural schematic view of the present application;

[0029] Figure 5 It is Figure 4 It is a structure enlarged view of position B;

[0030] Figure 6 It is a perspective structural schematic view of the present application during assembly;

[0031] Figure 7 It is a sectional view structural schematic view of the present application during assembly;

[0032] Figure 8 It is a local structural schematic view of the present application using conical stamping connecting part;

[0033] Figure 9 It is a local structural schematic view of the present application using two kinds of pressing areas;

[0034] Figure 10 It is a local structural schematic view of the present application using the first kind of stamping connecting part uniformly distributed;

[0035] Figure 11 It is a local structural schematic view of the present application using the second kind of stamping connecting part uniformly distributed.

[0036] In the drawings, the reference signs are as follows: 1, welding wheel body; 101, welding surface; 102, stamping connecting part; 103, rotating shaft; 104, bearing check ring; 105, assembly gap; 106, connecting hole; 2, bearing; 3, bearing end cover; 4, connecting shaft; 5, bearing seat. DETAILED DESCRIPTION

[0037] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0038] It should be noted that when a component is referred to as "fixed," "set," or "connected" to another component, it may be located directly or indirectly on that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first," "second," etc., are used for ease of description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "Many" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0039] like Figures 1 to 5 As shown, in one embodiment of the present invention, a welding stable roller welding wheel includes a welding wheel body 1. The welding wheel body 1 is provided with a welding surface 101. A plurality of raised imprinted connecting portions 102 are provided on the welding surface 101 at intervals. The welding surface 101 includes a plurality of imprinted areas, and at least one area is provided with an imprinted connecting portion 102.

[0040] By dividing the area into imprinted zones, welding parameters and the layout of the imprinted connection 102 can be flexibly controlled according to welding requirements and the characteristics of the materials to be welded. This makes the welding process more adaptable to diverse application scenarios, improving the targeting and effectiveness of the welding. Secondly, setting the imprinted connection 102 in at least one area can concentrate energy and pressure, promoting metallurgical bonding between materials within that area, improving welding quality, accelerating welding speed, and increasing production efficiency. Simultaneously, areas without imprinted connection 102 can act as buffers, helping to reduce deformation and stress concentration during the welding process.

[0041] Along the radial direction of the welding wheel body 1, the cross-sectional area of ​​the embossed connection portion 102 decreases in stages from near to far. In this embodiment, the embossed connection portion 102 includes two parts with different cross-sectional areas, forming a multi-level embossing step.

[0042] In the roll welding process, the roller starts to rotate and contacts the material to be welded. The top of the impression connecting part 102 first contacts the material, and due to the small cross-sectional area of the top, preliminary contact and pre-pressing are performed. The contact area at this stage is small, and the material deformation is small, which prepares for the subsequent welding process. As the roller continues to rotate, the bottom of the impression connecting part 102 gradually contacts the material. Since the bottom has a larger area, it can provide more pressure and ultrasonic vibration energy to promote the metallurgical bonding between the materials. At the same time, since the top has already contacted the material and been preliminarily deformed, the entire welding process is carried out progressively. As the impression connecting part 102 completely rolls through the welding area, the welding process reaches a steady state.

[0043] In this embodiment, by setting the impression connecting part 102 with a step change in cross-sectional area, the force on the material during welding is gradually increased, achieving a progressive welding process. The progressive stress mode helps to avoid local stress concentration, allowing the material to more evenly distribute stress when subjected to tensile force, reducing damage to the material, preventing the generation of holes and metal debris, and the step change in the impression connecting part 102 can have sufficient height to ensure welding quality.

[0044] In actual application, the cross-sectional area of the impression connecting part 102 continuously decreases from near to far along the radial direction of the roller body 1. As shown in Figure 8 , the impression connecting part 102 is conical with a rounded top. Similarly, the force during impression can be reduced to protect the product and ensure welding quality.

[0045] In a preferred example, the cross-sectional shape of the impression connecting part 102 is at least one of a rhombus, a rectangle, and a circle. As shown in Figure 2 and Figure 3 , the cross-sectional shape of the impression connecting part 102 is a square with chamfered corners.

[0046] In this embodiment, the impression connecting part 102 with diversified cross-sectional shapes such as rhombus, rectangle, and circle is used, which facilitates selection as needed, improves the flexibility and adaptability of structural design. It should be noted that the cross-sectional shape includes but is not limited to the listed shapes, and in addition, a single cross-sectional shape of the impression connecting part 102 can be used, or a combination of shapes can be used, as long as the welding requirements are met.

[0047] In a preferred example, the impression connecting parts 102 with different cross-sectional shapes are arranged at intervals or intermittently.

[0048] In this embodiment, the flexibility and fine control ability of the welding process are further enhanced by spacing or intermittently arranging the embossing connecting parts 102 with different cross-sectional shapes. The stress on the material is different for different cross-sectional shapes of the protrusions, and the combined use can make the stress distribution in the welding process more uniform, avoiding local stress concentration and preventing damage to the material. It should be noted that the size and spacing of each embossing connecting part 102 in the radial and axial directions do not have to be exactly the same, and can be progressively arranged in a certain direction or modified in a certain embossing area as needed.

[0049] As shown in Figure 2 , in a preferred example, the embossing connecting parts 102 are uniformly arranged in the embossing area.

[0050] In this embodiment, the uniform arrangement of the embossing connecting parts 102 ensures that the stress on the material to be welded is uniform during the welding process, avoiding local stress concentration and thus reducing the risk of material damage such as perforation and cracking. Secondly, the uniform arrangement of the embossing connecting parts 102 makes the formation of the welded joint more consistent, whether it is the width, depth or quality of metallurgical bonding of the welded joint, which can effectively guarantee the product consistency and reliability. In addition, the uniform arrangement of the embossing connecting parts 102 can form a continuous weld mark on the material, improving the efficiency and stability of the welding process. In application, the number of embossing connecting parts 102 in each row can be set as needed, such as Figure 10 and Figure 11 , which can be 3 in a row or 6 in a row.

[0051] In a preferred example, the embossing connecting parts 102 are divided into multiple pressing regions along the axial direction of the welding wheel body 1, and the spacing and / or shape of the embossing connecting parts 102 in the multiple pressing regions are different. As shown in Figure 9 , two pressing regions are provided on the welding wheel body 1, the right embossing connecting parts 102 have a larger cross-sectional area and a larger spacing, and the left embossing connecting parts 102 have a smaller cross-sectional area and a smaller spacing. The right pressing region welds the upper and lower foils and the current collector, and the pressing region only welds the upper and lower foils, so that the welding energy is uniform.

[0052] As shown in Figure 1 and Figure 2 , in a preferred example, the welding wheel body 1 is provided with a shaft 103 on each side, and the welding wheel body 1 and the shaft 103 are of an integrated structure.

[0053] In this embodiment, the integral structure enhances the overall rigidity and stability of the welding wheel. Since there is no connecting piece or interface between the welding wheel body 1 and the rotating shaft 103, the performance degradation caused by loose or failed connection is avoided, so that the welding wheel can maintain a stable operating state when rotating at high speed and under welding pressure, improving the accuracy and reliability of welding. Secondly, the integral structure also helps to improve the service life of the welding wheel. Since there is no connecting gap or weak link between the welding wheel body 1 and the rotating shaft 103, the risk of wear and fatigue fracture caused by long-term use is reduced, making the welding wheel more durable and reducing the frequency of replacement and maintenance costs. In addition, the integral structure simplifies the structural design of the welding wheel, reducing manufacturing costs. In traditional welding wheel design, the welding wheel body 1 and the rotating shaft 103 are connected by bolts, welding or other means, increasing the complexity and cost of the manufacturing process. The integral structure avoids these problems, making the manufacturing of the welding wheel simpler and more efficient.

[0054] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , in a preferred example, the rotating shaft 103 is provided with a bearing retainer 104.

[0055] The retainer is provided with an assembly notch 105.

[0056] The end of the rotating shaft 103 is provided with a connecting hole 106.

[0057] The bearing retainer 104 provided on the rotating shaft 103 effectively limits the bearing 2, ensuring the stability of the bearing 2 during rotation, preventing axial displacement of the bearing 2 during high-speed rotation or under load, and improving the structural stability and safety of the entire welding wheel assembly.

[0058] The assembly notch 105 provided on the retainer provides an interface for the disassembly tool, facilitating the placement of the disassembly tool, making the disassembly process of the bearing 2 more simple and efficient, and improving work efficiency.

[0059] The connecting hole 106 provided at the end of the rotating shaft 103 facilitates the connection of the connecting bearing end cover 3 or the connecting shaft 4. One rotating shaft 103 is connected to the connecting bearing end cover 3, and the other rotating shaft 103 is connected to the connecting shaft 4, which is connected to the power source. The bearing 2 end cover and the connecting shaft 4 can limit the axial movement of the bearing 2 on the other side, further ensuring the stability of the bearing 2 installation, so that the rotating shaft 103 is stably installed on the bearing seat 5.

[0060] A welding device with stable welding in an embodiment of the present application comprises the above-mentioned welding device with stable welding.

[0061] In this embodiment, the welding stable roller is used, through the unique design of the stamping connection part 102 and the structure of the rotating shaft 103, the uniform distribution of stress and the effective dispersion of stress in the welding process are realized, so that the stability of welding is significantly enhanced, the welding defects in the welding process are reduced, and the quality and consistency of the welded joint are improved. The welding stable roller optimizes the welding process, reduces the welding defects and the rework rate, thereby improving the production efficiency. The welding stable roller uniformly arranges the stamping connection part 102 and the diversified cross-sectional shape, promotes the closer contact and metallurgical bonding between the materials, further improves the quality of the welded joint, the welded joint can withstand greater mechanical stress, improves the overall performance and service life of the product. The welding stable roller divides the stamping area and sets the diversified stamping connection part 102, improves the adaptability and flexibility of the welding equipment, can accurately control according to different welding requirements and the characteristics of the to-be-welded material, meets the diversified application scenarios.

[0062] The above only describes the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A weld-stable seam roller characterized in that, The welding roller body is provided with a welding surface, and the welding surface includes a plurality of embossed areas in the circumferential direction, and at least one area is provided with a plurality of embossed connecting parts in the form of protrusions.

2. The weld-stable roll bonding wheel of claim 1, wherein, The cross-sectional area of the embossed connecting part gradually decreases from near to far along the radial direction of the welding roller body.

3. The weld-stable roll bonding wheel of claim 1, wherein, The shape of the cross section of the embossed connecting part is at least one of a rhombus, a rectangle, and a circle.

4. The weld-stable roll bonding wheel of claim 3, wherein, The embossed connecting parts with different cross-sectional shapes are arranged at intervals or discontinuously.

5. The weld-stable roll bonding wheel of claim 1, wherein, The embossed connecting part is divided into a plurality of pressing areas along the axial direction of the welding roller body, and the spacing and / or shape of the embossed connecting part of the plurality of pressing areas are different.

6. A weld-stable seam-welding wheel according to any one of claims 1-5, characterized in that The welding roller body is provided with a rotating shaft on both sides, and the welding roller body and the rotating shaft are of an integrated structure.

7. A weld-stable roll bonding wheel as claimed in claim 6, wherein, The rotating shaft is provided with a bearing retainer ring.

8. A weld-stable roll bonding wheel as claimed in claim 7, wherein, The retainer ring is provided with an assembly notch.

9. The weld-stable roll bonding wheel of claim 6, wherein, The end of the rotating shaft is provided with a connecting hole.

10. A welding apparatus that is stable in welding, characterized by The welding roller is provided with a welding stabilizing device.

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