Self-adaptable welding positioning device and welding machine

Abstract

The utility model relates to a kind of welding positioning device and welding machine that can be self-adaptive to compress, wherein the welding positioning device that can be self-adaptive to compress includes: positioning mechanism, for positioning piece to be welded;And compressing mechanism, including driving assembly and pressure jaw, the driving assembly is used to drive the pressure jaw close or away from the positioning mechanism;The pressure jaw includes main body, is set on the main body and compresses tight part, and is connected to the elastic part of compressing tight part, the elastic part is configured as when the compressing tight part compresses the piece to be welded, elastic deformation is generated, to make the compressing tight part can be closely attached to the surface of the piece to be welded.The utility model can be self-adaptive to compensate workpiece tolerance and surface unevenness, improve compressing effect and welding quality.

Description

Technical Field

[0001] This utility model relates to the field of battery cell welding, and more specifically, to a welding positioning device and welding machine with adaptive clamping capability. Background Technology

[0002] In the manufacturing process of cylindrical batteries, the tabs of the battery cell need to be welded to the cover plate. Current welding processes typically use welding clamps to press and fix the cover plate to prevent misalignment during welding. However, existing welding clamps are mostly rigid structures. Because cylindrical battery cells may have dimensional tolerances, or the cover plate surface may have flatness errors, rigid clamps cannot effectively compensate for these deviations during clamping. This can easily lead to poor contact between the clamps and the surface of the battery cell tabs to be welded, resulting in inaccurate welding positions and welding defects such as incomplete welds and sparks, affecting the reliability and production yield of the battery cell. Utility Model Content

[0003] In view of this, the present invention provides a welding positioning device and welding machine with adaptive clamping, which can adaptively compensate for workpiece tolerances and surface unevenness, thereby improving the clamping effect and welding quality.

[0004] The objective of this utility model is achieved through the following technical solution: An adaptive clamping welding positioning device, comprising: A positioning mechanism for positioning the workpiece to be welded; and A clamping mechanism includes a drive assembly and a clamping jaw, the drive assembly being used to drive the clamping jaw toward or away from the positioning mechanism; The pressure claw includes a main body, a pressing part disposed on the main body, and an elastic part connected to the pressing part. The elastic part is configured to generate elastic deformation when the pressing part presses the workpiece to be welded, so that the pressing part can closely fit the surface of the workpiece to be welded.

[0005] In the above technical solution, the positioning mechanism can fix the workpiece to be welded. The driving component drives the pressure claw to approach the positioning mechanism, thereby pressing the workpiece placed on the positioning mechanism to ensure the welding effect. By setting an elastic part on the pressure claw, the pressure part can automatically compensate for the unevenness or tolerance of the surface of the workpiece to be welded through its own elastic deformation when it contacts the workpiece. This ensures that the pressure part can be stably and tightly pressed into the welding position, effectively solving the problem of incomplete welding caused by insufficient pressing and significantly improving the reliability of welding quality.

[0006] Furthermore, the elastic portion includes an elastic element, the pressing portion is configured to slide relative to the main body, and the elastic element is disposed between the pressing portion and the main body.

[0007] In the above technical solution, the clamping part can slide relative to the main body and is connected to the clamping part through an independent elastic element, thereby realizing the floating clamping function. When the clamping claw clamps, the elastic element can generate a continuous restoring force on the clamping part toward the workpiece to be welded, ensuring that the pressure is evenly applied to the surface of the workpiece to be welded and guaranteeing the clamping effect.

[0008] Furthermore, the elastic part includes a plastic part covering the outside of the pressing part, and the plastic part is provided with a pressure plate for abutting against the workpiece to be welded.

[0009] In the above technical solution, the plastic part covers the pressing part, and the self-adaptive pressing capability is achieved through the elasticity of the plastic part itself. The structure is simple and it is convenient to replace and maintain the plastic part.

[0010] Furthermore, the main body is provided with fixing blocks on both sides near the plastic part, and the fixing blocks extend into the plastic part.

[0011] In the above technical solution, by setting fixing blocks on both sides of the plastic part and extending the fixing blocks into the plastic part, a stable connection between the plastic part and the main body is achieved, which effectively prevents the plastic part from loosening due to fatigue or stress concentration under long-term cyclic pressing operations and improves the service life of the pressure claw.

[0012] Furthermore, the surface of the pressure plate is provided with clearance steps.

[0013] In the above technical solution, the clearance step set on the surface of the pressure plate can avoid mechanical interference that may occur during the clamping process, ensuring that the clamping claw can perform the clamping action smoothly and in place, while protecting the critical structure of the part to be welded from scratch damage.

[0014] Furthermore, the clamping part is provided with welding holes for welding.

[0015] In the above technical solution, the welding holes provided on the clamping part provide a channel for laser welding, so that the laser beam can irradiate the clamped workpiece without obstruction, thereby improving the stability and quality of the welding process.

[0016] Furthermore, the drive assembly includes a lifting drive assembly, a mounting base, and a horizontal drive assembly. The lifting drive assembly is connected to the mounting base and is used to drive the mounting base to move vertically. A plurality of the horizontal drive assemblies are arranged on the mounting base and correspond one-to-one with the pressure claws, and are used to drive the corresponding pressure claws to move horizontally.

[0017] In the above technical solution, by adopting a drive structure that combines lifting drive and horizontal drive, the pressure claw can first quickly descend to the preset working height, and then complete the clamping and positioning by horizontal movement, which enhances the adaptability to battery cells of different specifications and realizes precise control of clamping position and clamping force.

[0018] Furthermore, the positioning mechanism includes multiple positioning units, each corresponding to one of the pressure claws.

[0019] In the above technical solution, positioning units corresponding one-to-one with the pressure claws are used to form multiple independent positioning and clamping stations, which allows multiple parts to be welded to be positioned and clamped at the same time, improving the efficiency and consistency of overall assembly and welding.

[0020] Furthermore, the positioning unit includes a bottom positioning component and a side positioning component arranged adjacent to each other. The side positioning component is arranged opposite to the pressure claw and has a groove for the pressure claw to pass through.

[0021] In the above technical solution, the bottom positioning component and the side positioning component can respectively position the two parts to be welded, namely the battery cell and the end cap. The groove on the side positioning component ensures that the pressure claw can accurately reach the predetermined pressing position, thus realizing the accurate coordination of positioning and pressing actions.

[0022] This utility model also provides a welding machine, including the welding positioning device with adaptive clamping as described above.

[0023] The advantages of this invention compared to existing technologies are as follows: The positioning mechanism can fix the workpiece to be welded. The driving component drives the pressure claws to approach the positioning mechanism, thereby pressing the workpiece placed on the positioning mechanism and ensuring the welding effect. By providing an elastic part on the pressure claws, the clamping part can automatically compensate for unevenness or tolerances on the surface of the workpiece through its own elastic deformation when it contacts the workpiece. This ensures that the clamping part can be stably and tightly pressed into the welding position, effectively solving the problem of incomplete welding caused by insufficient clamping and significantly improving the reliability of welding quality. Attached Figure Description

[0024] 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. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the self-adaptive clamping welding positioning device according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the pressing mechanism according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the pressure claw in the first embodiment of the present invention.

[0028] Figure 4 This is a structural schematic diagram of the pressure claw from another angle in the first embodiment of this utility model.

[0029] Figure 5 This is a schematic diagram of the internal structure of the pressure claw in the first embodiment of this utility model.

[0030] Figure 6 This is a schematic diagram of the pressure claw structure of the second embodiment of the present invention.

[0031] Figure 7 for Figure 6 A magnified view of part A in the diagram.

[0032] Figure 8 This is a schematic diagram of the positioning mechanism according to an embodiment of the present utility model.

[0033] Figure 9 This is a partially enlarged schematic diagram of the positioning unit in an embodiment of the present invention.

[0034] Explanation of icon numbers: Positioning mechanism 1, positioning unit 11, bottom positioning component 111, positioning seat 1111, rotating clamping block 1112, side positioning component 112, positioning groove 1121, positioning stop block 1122, groove body 1123, clamping mechanism 2, drive component 21, lifting drive component 211, mounting seat 212, horizontal drive component 213, pressure claw 22, main body 221, clamping part 222, elastic element 223a, plastic part 223b, baffle 224, pressure plate 225, clearance step 2251, fixing block 226, welding hole 227. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. 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.

[0037] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application 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 limitations on this application.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0039] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0040] Please refer to Figures 1 to 8 The adaptive clamping welding positioning device of this utility model mainly includes a positioning mechanism 1 and a clamping mechanism 2. The positioning mechanism 1 is used to position the workpiece to be welded. The clamping mechanism 2 includes a driving component 21 and a clamping claw 22. The driving component 21 is used to drive the clamping claw 22 to move closer to or away from the positioning mechanism 1. The clamping claw 22 includes a main body 221, a clamping part 222, and an elastic part. The clamping part 222 is disposed on the main body 221, and the elastic part is connected to the clamping part 222. The elastic part is configured to generate elastic deformation when the clamping part 222 clamps the workpiece to be welded, so that the clamping part 222 can tightly fit the surface of the workpiece to be welded.

[0041] For example, in this embodiment, the component to be welded is a cylindrical battery. During the production process, the tabs and end caps of the battery cell need to be welded. The positioning mechanism 1 can position the battery cell and end cap respectively, thereby ensuring the stability of the position during welding. The clamping mechanism 2 can drive the clamping claw 22 to approach the positioning mechanism 1 through the driving component 21, thereby clamping the tabs and end caps, further ensuring the accuracy of welding. The elastic part can generate elastic deformation under pressure. By providing an elastic part on the clamping claw 22, when the clamping part 222 contacts the component to be welded, it can automatically compensate for the unevenness or tolerance of the surface of the component to be welded through its own elastic deformation, thereby ensuring that the clamping part 222 can be stably and tightly pressed into the position to be welded, effectively solving the problem of incomplete welding caused by insufficient clamping, and significantly improving the reliability of welding quality.

[0042] Please refer to Figures 3 to 5In the first embodiment of this utility model, the elastic part includes an elastic element 223a, the pressing part 222 is configured to slide relative to the main body 221, and the elastic element 223a is disposed between the pressing part 222 and the main body 221.

[0043] For example, the main body 221 is provided with a through hole, and the clamping part 222 passes through the through hole and can slide relative to the main body 221 along the axial direction of the through hole. The elastic element 223a is a spring, and the main body 221 is provided with a detachable baffle 224. One end of the elastic element 223a abuts against the baffle 224, and the other end abuts against the clamping part 222, thereby realizing the floating clamping function of the clamping part 222. When the clamping claw 22 clamps, the elastic element 223a can generate a continuous restoring force towards the workpiece to be welded on the clamping part 222, ensuring that the pressure is evenly applied to the surface of the workpiece to be welded and ensuring the clamping effect.

[0044] In this embodiment, elastic elements 223a are symmetrically arranged on both sides of the clamping part 222. By symmetrically arranging the elastic elements 223a on both sides of the clamping part 222, the clamping part 222 is subjected to balanced force during the pressing process, which effectively prevents the clamping part 222 from tilting or jamming due to unilateral force, and ensures that the clamping force acts perpendicularly on the surface of the battery cell, thereby enabling the workpiece to be welded to remain stable during the welding process.

[0045] Please refer to Figure 6 and Figure 7 In the second embodiment of this utility model, the elastic part includes a plastic part 223b covering the outside of the pressing part 222, and the plastic part 223b is provided with a pressure plate 225 for abutting against the part to be welded.

[0046] For example, the plastic part 223b can be made of existing elastic material and covers the outside of the clamping part 222. The pressure plate 225 is located at one end facing the positioning mechanism 1. When the clamping claw 22 approaches the part to be welded, the pressure plate 225 abuts against the welding part. At the same time, the plastic part 223b undergoes elastic deformation under pressure, thereby realizing adaptive clamping capability. The overall structure is simple and convenient for replacing and maintaining the plastic part 223b.

[0047] In this embodiment, fixing blocks 226 are provided on both sides of the main body 221 near the plastic part 223b, and the fixing blocks 226 extend into the plastic part 223b. For example, the fixing blocks 226 are formed in an "L" shape, with one end connected to the main body 221 and the other end bent and extending into the plastic part 223b, thus forming a barb structure to fix the plastic part 223b to the main body 221. By providing fixing blocks 226 on both sides of the plastic part 223b, and with the fixing blocks 226 extending into the plastic part 223b, a stable connection between the plastic part 223b and the main body 221 is achieved, effectively preventing the plastic part 223b from loosening due to fatigue or stress concentration under long-term cyclic pressing operations, and improving the service life of the pressure claw 22.

[0048] The surface of the pressure plate 225 is provided with clearance steps 2251. In this embodiment, clearance steps 2251 are provided on both sides of the pressure plate 225 in the height direction. The clearance steps 2251 provided on the surface of the pressure plate 225 can avoid mechanical interference that may occur during the clamping process, ensuring that the clamping claw 22 can perform the clamping action smoothly and in place, while protecting the critical structure of the workpiece to be welded from scratch damage.

[0049] In the above embodiment, the clamping part 222 is provided with a welding hole 227 for welding. The welding hole 227 is formed as a through hole penetrating the clamping part 222 and the main body 221, thereby providing a channel for laser welding. When the clamping part 222 clamps the electrode tab and the end cap, the laser beam can irradiate the clamped part to be welded without obstruction, thereby improving the stability and quality of the welding process.

[0050] Please refer to this again. Figure 1 and Figure 2 The drive assembly 21 includes a lifting drive assembly 211, a mounting base 212, and a horizontal drive assembly 213. The lifting drive assembly 211 is connected to the mounting base 212 and is used to drive the mounting base 212 to move vertically. Multiple horizontal drive assemblies 213 are arranged on the mounting base 212 and correspond one-to-one with the pressure claws 22, and are used to drive the corresponding pressure claws 22 to move horizontally.

[0051] For example, the lifting drive assembly 211 can be an existing linear drive device, such as a motor-driven linear module, whose output end is connected to the mounting base 212, enabling the mounting base 212 to be lifted vertically. Multiple horizontal drive assemblies 213 are arranged on the mounting base 212. These horizontal drive assemblies 213 can be existing linear drive devices, such as linear cylinders, and are connected one-to-one with the pressure claws 22, driving the pressure claws 22 to move horizontally, thereby achieving clamping and releasing actions. By employing a drive structure that combines lifting and horizontal drives, the pressure claws 22 can first quickly descend to a preset working height, and then complete the clamping and positioning through horizontal movement. This enhances the adaptability to different specifications of battery cells and achieves precise control of the clamping position and clamping force.

[0052] Please refer to Figure 8 and Figure 9 The positioning mechanism 1 includes multiple positioning units 11, each corresponding to a pressure claw 22. By employing positioning units 11 that correspond one-to-one with the pressure claw 22, multiple independent positioning and clamping stations are formed, allowing multiple parts to be welded to be positioned and clamped simultaneously, thus improving the efficiency and consistency of the overall assembly and welding.

[0053] The positioning unit 11 includes a bottom positioning component 111 and a side positioning component 112 arranged adjacent to each other. The side positioning component 112 is arranged opposite to the pressure claw 22 and has a groove 1123 for the pressure claw 22 to pass through. The bottom positioning component 111 is used to position the battery cell. Specifically, the bottom positioning component 111 includes a positioning seat 1111 and a rotating clamping block 1112. The rotating clamping block 1112 is rotatably connected to the positioning seat 1111. When the battery cell is placed on the positioning seat 1111, the rotating clamping block 1112 can rotate and abut against the battery cell, thereby positioning the battery cell. The side positioning component 112 is used to position the end cap. The side positioning component is located on the side of the bottom positioning component 111 away from the pressing mechanism 2. Specifically, it includes a positioning groove 1121 and a positioning stop 1122. The end cap to be welded can be placed in the positioning groove 1121. The positioning stop 1122 is configured to be movable, thereby blocking and positioning the end cap at the opening end of the positioning groove 1121. The groove 1123 is positioned on the positioning block 1122 to expose the electrode tabs that need to be welded inside the end cap, while ensuring that the pressure claw 22 can accurately reach the predetermined pressing position, thus achieving accurate coordination between positioning and pressing actions.

[0054] This application also provides a welding machine, including the aforementioned adaptive clamping welding positioning device. Based on the adaptive clamping welding positioning device, the welding machine can be equipped with a welding mechanism (not shown) for welding the clamped workpiece. Furthermore, the welding machine can also be equipped with a loading device and a unloading device (not shown) for automatically loading the workpiece to be welded onto the positioning mechanism 1, or unloading the welded product from the positioning mechanism 1. It is understood that the welding mechanism, loading device, and unloading device can be existing ones, and will not be described in detail here.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A welding positioning device with adaptive clamping capability, characterized in that, include: Positioning mechanism (1), used to position the workpiece to be welded; and The clamping mechanism (2) includes a drive assembly (21) and a clamping claw (22), wherein the drive assembly (21) is used to drive the clamping claw (22) to move closer to or away from the positioning mechanism (1); The pressure claw (22) includes a main body (221), a pressing part (222) disposed on the main body (221), and an elastic part connected to the pressing part (222). The elastic part is configured to generate elastic deformation when the pressing part (222) presses the workpiece to be welded, so that the pressing part (222) can closely fit the surface of the workpiece to be welded.

2. The adaptive clamping welding positioning device according to claim 1, characterized in that, The elastic portion includes an elastic element (223a), the pressing portion (222) is configured to slide relative to the body (221), and the elastic element (223a) is disposed between the pressing portion (222) and the body (221).

3. The adaptive clamping welding positioning device according to claim 1, characterized in that, The elastic part includes a plastic part (223b) covering the outside of the pressing part (222), and the plastic part (223b) is provided with a pressure plate (225) for abutting against the part to be welded.

4. The adaptive clamping welding positioning device according to claim 3, characterized in that, The main body (221) has fixing blocks (226) on both sides near the plastic part (223b), and the fixing blocks (226) extend into the plastic part (223b).

5. The adaptive clamping welding positioning device according to claim 3, characterized in that, The surface of the pressure plate (225) is provided with a clearance step (2251).

6. The adaptive clamping welding positioning device according to claim 1, characterized in that, The clamping part (222) is provided with welding holes (227) for welding.

7. The adaptive clamping welding positioning device according to claim 1, characterized in that, The drive assembly (21) includes a lifting drive assembly (211), a mounting base (212), and a horizontal drive assembly (213). The lifting drive assembly (211) is connected to the mounting base (212) and is used to drive the mounting base (212) to move vertically. A plurality of the horizontal drive assemblies (213) are arranged on the mounting base (212) and correspond one-to-one with the pressure claws (22) to drive the corresponding pressure claws (22) to move horizontally.

8. The adaptive clamping welding positioning device according to claim 1, characterized in that, The positioning mechanism (1) includes multiple positioning units (11), and each positioning unit (11) corresponds to one of the pressure claws (22).

9. The adaptive clamping welding positioning device according to claim 8, characterized in that, The positioning unit (11) includes a bottom positioning component (111) and a side positioning component (112) arranged adjacent to each other. The side positioning component (112) is arranged opposite to the pressure claw (22) and has a groove (1123) for the pressure claw (22) to pass through.

10. A welding machine, characterized in that, Includes the adaptive clamping welding positioning device as described in any one of claims 1 to 9.

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