Welding tool

Abstract

The utility model provides a welding tool which is used for clamping and positioning a first welding piece and a second welding piece and comprises a first clamping mechanism, a second clamping mechanism and a welding copper sleeve. The first clamping mechanism comprises a first positioning clamping part which is used for clamping a first welding part and is adjustable in size; the second clamping mechanism is detachably mounted on the first clamping mechanism, the second clamping mechanism comprises a second positioning clamping part which is used for clamping a second welding part and is adjustable in position, and the second clamping mechanism is configured to enable the preset welding connection part of the second welding part and the preset welding connection part of the first welding part to be connected; the welding copper sleeve is detachably installed on the side, away from the first clamping mechanism, of the second clamping mechanism and tightly presses the connecting portion of the first welding piece and the second welding piece, positioning holes corresponding to the preset welding portions of the first welding piece and the second welding piece are formed in the welding copper sleeve, the compatibility of the welding tool can be improved, and the welding efficiency is improved. And therefore, the technical problems of long development period and cost waste of a welding tool are solved.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a welding tooling. Background Technology

[0002] During battery R&D, there are numerous testing requirements for the electrical performance characterization of individual battery cells. When testing the electrical performance of a single battery cell, positive and negative conductive strips need to be laser-welded onto the cell according to different requirements to assist in the testing. Depending on the test content and customer needs, the conductive strips have constantly changing structural forms to meet the testing requirements. Furthermore, different battery sizes vary, and different welding fixtures need to be developed for welding conductive strips with different structures and for batteries of different sizes, resulting in long development cycles and cost waste. Utility Model Content

[0003] This utility model provides a welding fixture to improve the compatibility of welding fixtures, thereby improving the technical problem of long development cycles and cost waste caused by developing multiple welding fixtures.

[0004] To achieve the above and other related objectives, this utility model provides a welding fixture for clamping and positioning a first weldment and a second weldment, and for welding the first weldment and the second weldment together with welding equipment. The welding fixture includes: a first clamping mechanism, a second clamping mechanism, and a welding copper sleeve. The first clamping mechanism includes a first positioning clamping part for clamping the first weldment and whose size is adjustable. The second clamping mechanism is detachably mounted on the first clamping mechanism and includes a second positioning clamping part for clamping the second weldment and whose position is adjustable. The second clamping mechanism is configured to allow the preset welding connection points of the second weldment and the first weldment to connect. The welding copper sleeve is detachably mounted on the side of the second clamping mechanism away from the first clamping mechanism and presses against the connection point of the first weldment and the second weldment. The welding copper sleeve has positioning holes corresponding to the preset welding points of the first weldment and the second weldment.

[0005] In the above technical solution, by providing an adjustable-size first positioning clamping part on the first clamping mechanism, it is possible to achieve compatibility with first welded parts of different sizes and shapes. By providing an adjustable-position second positioning clamping part on the second clamping mechanism, the position between the second welded part and the first welded part can be adjusted to accommodate different shapes and structures of the second welded part while still allowing it to connect with the welding joint of the first welded part. Furthermore, by providing a welding copper sleeve on the second clamping mechanism, the joint of the first and second welded parts is pressed together to facilitate the welding operation.

[0006] Furthermore, the positioning holes on the welding copper sleeve can first locate the welding positions of the first and second weldments, thereby accurately guiding the welding equipment to perform welding operations, thus facilitating welding and improving welding accuracy and quality. In summary, the combined action of the first clamping mechanism, the second clamping mechanism, and the welding copper sleeve improves the compatibility of the welding fixture in this technical solution. It can be reused after a single development, reducing the development cycle and saving development and manufacturing costs.

[0007] In one example of the welding fixture of this utility model, the first clamping mechanism includes a first clamping body and a second clamping body that are arranged opposite to each other and whose spacing is adjustable. The first clamping body has a first cavity extending through the height direction of the first clamping body on the side facing the second clamping body. The second clamping body has a second cavity opposite to the first cavity and extending through the height direction of the second clamping body on the side facing the first clamping body. The first cavity and the second cavity form a first positioning clamping part.

[0008] In the above technical solution, the first welded part is clamped and positioned by the first positioning clamping part formed by the first cavity and the second cavity, which can realize the multi-line contact positioning of the first positioning clamping part and the first welded part, thereby improving the stability of clamping and the accuracy of positioning.

[0009] In one example of the welding fixture of this utility model, the welding fixture further includes a base plate, and the first clamp and the second clamp are detachably mounted on the base plate. The height direction of the first positioning clamp is perpendicular to the base plate, and at least one of the first clamp and the second clamp is movably connected to the base plate to adjust the distance between the first clamp and the second clamp.

[0010] In the above technical solution, both the first clamp and the second clamp can be detachably mounted on the substrate, which ensures high installation reliability and facilitates the adjustment of the distance between the first clamp and the second clamp. In addition, the substrate is beneficial for positioning the bottom surface of the first weldment, further improving the positioning accuracy and thus improving the welding quality.

[0011] In one example of the welding fixture of this utility model, the second clamping mechanism includes a mounting plate, which is detachably connected to the side of the first clamping body and the second clamping body away from the substrate. At least one of the first clamping body and the second clamping body is movably connected to the mounting plate to adjust the distance between the first clamping body and the second clamping body. The mounting plate is provided with a through hole for the first welding part to pass through.

[0012] In the above technical solution, the mounting plate connects the first clamping mechanism and the second clamping mechanism, and is used to install other structural components of the second clamping mechanism, which facilitates the positioning and clamping between the first and second welded parts. Furthermore, the mounting plate is connected to the side of the first and second clamping parts away from the substrate, further improving the reliability of the installation and fixation of the first and second clamping parts.

[0013] In one example of the welding fixture of this utility model, the second clamping mechanism further includes a two-dimensional moving component. The two-dimensional moving component is detachably installed on the side of the mounting plate away from the first clamping mechanism. The two-dimensional moving component is provided with a second positioning clamping part. The second positioning clamping part can move along the first direction and the second direction with the two-dimensional moving component. The first direction and the second direction are perpendicular to each other in the horizontal plane.

[0014] In the above technical solution, the two-dimensional moving component can enable the second clamping part to move along the first direction and the second direction. By adjusting the position of the second clamping part, the second welding parts of different sizes, structures and shapes can be moved, thereby achieving contact with the first welding part at the preset welding connection position. This setting improves the compatibility of the second clamping mechanism.

[0015] In one example of the welding fixture of this utility model, the two-dimensional moving component includes a first slider and at least one second slider. The first slider is movably mounted on the mounting plate along a first direction, and at least one second slider is movably mounted on the first slider along a second direction. The second slider is provided with a welding part mounting hole for mounting a second welding part, and the welding part mounting hole forms a second positioning clamping part.

[0016] In the above technical solution, the second welded component is installed on the second slider through the welded component mounting hole. The second welded component can move along the second direction with the second slider, and the first slider and the second welded component can move together with the first slider along the first direction to realize the change of the position of the second welded component in the horizontal plane. This enables the welding position of the second welded component and the first welded component with different structural forms to be positioned, thereby improving the compatibility of the welding fixture.

[0017] In one example of the welding fixture of this utility model, the sliding contact surfaces of the first slider and the second slider include a concave-convex fit structure.

[0018] In the above technical solution, the concave-convex mating structure can guide and position the sliding between the first and second sliders, improving the smoothness of sliding and the accuracy of locking.

[0019] In one example of the welding fixture of this utility model, the welding fixture further includes a copper sleeve mounting mechanism. The copper sleeve mounting mechanism includes a first mounting block and a second mounting block arranged opposite to each other. Both the first mounting block and the second mounting block can be movably mounted on the side of the mounting plate facing the two-dimensional moving component along a first direction. Both the first mounting block and the side of the second mounting block away from the mounting plate are provided with a plurality of copper sleeve mounting holes for fixing the welding copper sleeve.

[0020] In the above technical solution, the mobility of the first mounting block and the second mounting block along the first direction enables the positional adjustability of the welding copper sleeve to meet the clamping requirements of different welding connection positions between different welding copper sleeves and the second welding assembly. In addition, the setting of multiple copper sleeve mounting holes can provide installation positions for welding copper sleeves with different hole spacings, further improving the compatibility of the welding fixture with welding copper sleeves of different structural forms and specifications.

[0021] In one example of the welding fixture of this utility model, two two-dimensional moving components are provided on the mounting plate, and the two two-dimensional moving components are arranged opposite to each other.

[0022] In the above technical solution, the setting of two two-dimensional moving components expands the working capacity of the welding fixture, which can simultaneously clamp and position the third welding part and the first welding part, and cooperate with the welding equipment to weld and fix them, completing two welding processes in one clamping, thus improving work efficiency.

[0023] In one example of the welding fixture of this utility model, the structures of the first mounting block and the second mounting block are asymmetrical.

[0024] In the above technical solution, when replacing the welding copper bushing, the installation direction of the welding copper bushing can be quickly and accurately determined through the asymmetrical structure. It can also be used to quickly and accurately replace and install different welding copper bushings, reducing the error rate and improving installation efficiency.

[0025] This utility model of welding fixture, by providing an adjustable-size first positioning clamping part on the first clamping mechanism, can achieve compatibility with first weldable parts of different sizes and shapes. By providing a position-adjustable second positioning clamping part on the second clamping mechanism, the position between the second and first weldable parts can be adjusted to accommodate different shapes and structures of the second weldable part while still allowing it to connect with the welding joint of the first weldable part. Furthermore, by providing a welding copper sleeve on the second clamping mechanism, the joint of the first and second weldable parts is pressed tightly together to facilitate the welding operation.

[0026] Furthermore, the positioning holes on the welding copper sleeve can first locate the welding positions of the first and second weldments, thereby accurately guiding the welding equipment to perform welding operations, thus facilitating welding and improving welding accuracy and quality. In summary, the combined action of the first clamping mechanism, the second clamping mechanism, and the welding copper sleeve improves the compatibility of the welding fixture in this technical solution. It can be reused after a single development, reducing the development cycle and saving development and manufacturing costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of an example of the welding fixture of this utility model;

[0029] Figure 2 This is an exploded view of an example of the welding fixture of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the first clamp in an example of the welding fixture of this utility model;

[0031] Figure 4 This is a schematic diagram of the substrate structure in an example of the welding fixture of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the second clamping mechanism in one example of the welding fixture of this utility model;

[0033] Figure 6 This is a schematic diagram of the welding copper sleeve and the copper sleeve mounting mechanism in an example of the welding fixture of this utility model;

[0034] Figure 7 This is a schematic diagram of the first and second welded parts in an example of the welding fixture of this utility model.

[0035] Figure 8 This is a schematic diagram of an example of the welding fixture of this utility model.

[0036] Component designation explanation:

[0037] 100. First welded component; 200. Second welded component; 210. Positive conductive strip; 220. Negative conductive strip; 300. First clamping mechanism; 310. First positioning clamping part; 320. First clamping body; 321. First cavity; 330. Second clamping body; 331. Second cavity; 400. Second clamping mechanism; 410. Second positioning clamping part; 420. Mounting plate; 421. Third mounting hole; 422. Fourth mounting hole; 430. Two-dimensional moving component; 431. 432. First slider; 432. Second slider; 4321. Welding mounting hole; 433. Concave-convex mating structure; 500. Welding copper sleeve; 510. Positive electrode welding copper sleeve; 520. Negative electrode welding copper sleeve; 600. Substrate; 610. First mounting hole; 620. Second mounting hole; 700. Copper sleeve mounting mechanism; 710. First mounting block; 720. Second mounting block; 730. Copper sleeve mounting hole; 740. Elastic component; 750. Clamping bolt; 800. Substrate mounting mechanism. Detailed Implementation

[0038] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0039] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0040] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0041] During battery research and development, there are many testing requirements for the electrical performance characterization of individual battery cells. When testing the electrical performance of a single battery cell, positive and negative conductive strips need to be laser-welded onto the cell according to different requirements to assist in the installation of test circuits. The structure of the conductive strips varies depending on the test content and customer needs, and different structures require the development of different welding fixtures. This results in a significant investment in fixtures and a waste of resources.

[0042] In view of this, the present invention provides a welding fixture that can be compatible with the assembly and positioning of batteries of different sizes and conductive strips of different structural shapes to facilitate welding, thereby alleviating the impact of the development cycle and high cost of welding fixtures.

[0043] Please see Figures 1 to 8 This utility model provides a welding fixture for clamping and positioning a first welding component 100 and a second welding component 200, and for welding the first welding component 100 and the second welding component 200 together with welding equipment. The first welding component 100 and the second welding component 200 can be any parts that need to be welded together, and there is no limitation on this. For example, the first welding component 100 can be a cylindrical battery in this embodiment, or other components. The second welding component 200 can be a positive electrode conductive strip 210 or a negative electrode conductive strip 220 in this embodiment, or other parts. Specifically, the welding fixture includes a first clamping mechanism 300, a second clamping mechanism 400, and a welding copper sleeve 500.

[0044] Please see Figures 1 to 3 The first clamping mechanism 300 includes a first positioning clamping part 310 with adjustable size for clamping the first welded part 100. The structural form of the first positioning clamping part 310 is not limited; for example, it can be a shape adapted to the shape of the first welded part 100, or it can be a single-sided V-shaped or double-sided V-shaped positioning surface, or it can be two planar clamping positioning surfaces. There are no limitations on this, as long as the size of the first positioning clamping part 310 is adjustable and can accommodate different sizes of the first welded parts 100. It should be noted that there are various ways to achieve the adjustability of the size of the first positioning clamping part 310. It can be achieved by adding or removing shims between the first positioning clamping parts 310, or by setting at least two clamping bodies and adjusting the distance between them. There are no limitations on this. By providing an adjustable-size first positioning clamping part 310 on the first clamping mechanism 300, it is possible to accommodate first welded parts 100 of different sizes and shapes.

[0045] Please see Figure 1 , Figure 2 and Figure 5The second clamping mechanism 400 is detachably mounted to the first clamping mechanism 300 so that the second clamping mechanism 400 can be removed when the first clamping mechanism 300 adjusts the size of the first positioning clamping part 310. The second clamping mechanism 400 includes a second positioning clamping part 410 for clamping the second welded part 200 and whose position is adjustable. The second clamping mechanism 400 is configured to allow the second welded part 200 and the first welded part 100 to connect at a preset welding connection point. It should be noted that the structure of the second clamping mechanism 400 can take many forms, such as manual adjustment and locking or mechanical adjustment and locking, and is not limited thereto. By providing the position-adjustable second positioning clamping part 410 on the second clamping mechanism 400, the second clamping mechanism 400 can adjust the position between the second welded part 200 and the first welded part 100 to accommodate different shapes and structures of the second welded part 200 while still allowing it to connect with the welding connection point of the first welded part 100.

[0046] Please see Figure 1 , Figure 2 and Figure 6 The welding copper sleeve 500 is detachably installed on the side of the second clamping mechanism 400 away from the first clamping mechanism 300, and presses the joint between the first welded part 100 and the second welded part 200, keeping the welding positions of the first welded part 100 and the second welded part 200 close together. This helps improve welding quality and prevents problems such as incomplete welds and welding failures. The welding copper sleeve 500 is provided with positioning holes corresponding to the preset welding positions of the first welded part 100 and the second welded part 200. The shape of the positioning holes is adaptively designed to correspond to the shape of the preset weld mark, without limitation, to ensure welding reliability. The welding copper sleeve 500 is used to press the joint between the first welded part 100 and the second welded part 200 to facilitate welding operations. Furthermore, the positioning holes on the welding copper sleeve 500 can first locate the welding positions of the first welded part 100 and the second welded part 200, and then accurately guide the welding equipment to perform welding operations, thereby facilitating welding and improving welding accuracy and quality.

[0047] In summary, the combined effect of the first clamping mechanism 300, the second clamping mechanism 400, and the welding copper sleeve 500 improves the compatibility of the welding fixture in this technical solution. It can be reused after one development, reducing the development cycle and saving development and manufacturing costs.

[0048] Please see Figure 3 and Figure 7In one example of the welding fixture of this utility model, the first clamping mechanism 300 includes a first clamping body 320 and a second clamping body 330 that are arranged opposite to each other and have an adjustable spacing. There are various ways to achieve the adjustable spacing, such as connecting the first clamping body 320 and the second clamping body 330 through an adjustable bolt and nut structure, or installing the first clamping body 320 and the second clamping body 330 onto other structures and adjusting the spacing by adjusting the installation position, etc., without limitation. The first clamping body 320 has a first cavity 321 that penetrates the height direction of the first clamping body 320 on the side facing the second clamping body 330, and the second clamping body 330 has a second cavity 331 that is opposite to the first cavity 321 and penetrates the height direction of the second clamping body 330 on the side facing the first clamping body 320. The first cavity 321 and the second cavity 331 form a first positioning clamping part 310. The first cavity 321 and the second cavity 331 can both be arc-shaped, as shown in the figure, or V-shaped, or a combination of various shapes. The shapes of the first cavity 321 and the second cavity 331 can be the same or different, and there is no limitation on this. As long as the first positioning clamping part 310 formed by the first cavity 321 and the second cavity 331 can clamp and position the first welded part 100, this arrangement can achieve multi-line contact positioning between the first positioning clamping part 310 and the first welded part 100, thereby improving the stability of clamping and the accuracy of positioning.

[0049] Preferably, the welding fixture also includes heightening pads, with multiple heights and quantities to accommodate first welded parts 100 of different heights. These pads position and support the bottom surface of the first welded parts 100, ensuring a tight fit at the weld joint between the first welded parts 100 and the second welded parts 200, thereby further improving the compatibility of the welding fixture.

[0050] Please see Figures 2 to 4In one example of the welding fixture of this utility model, the welding fixture further includes a base plate 600. A first clamping body 320 and a second clamping body 330 are detachably mounted on the base plate 600. The height direction of the first positioning clamping part 310 is perpendicular to the base plate 600. At least one of the first clamping body 320 and the second clamping body 330 is movably connected to the base plate 600 to adjust the distance between the first clamping body 320 and the second clamping body 330. Preferably, the base plate 600 is provided with a first mounting hole 610 for fixing the first clamping body 320 and a second mounting hole 620 for mounting the second clamping body 330. Both the first mounting hole 610 and the second mounting hole 620 can be elongated holes, or only one can be an elongated hole. This arrangement allows for adjustment of the distance between the first clamping body 320 and the second clamping body 330. This technical solution has high installation reliability and achieves the effect of easily adjusting the distance between the first clamping body 320 and the second clamping body 330. In addition, the base plate 600 facilitates the positioning of the bottom surface of the first welded part 100, further improving positioning accuracy and thus improving welding quality.

[0051] Please see Figure 4 Preferably, in one example of the welding fixture of this utility model, the welding fixture further includes a substrate mounting mechanism 800, which is detachably mounted on the substrate 600 and used to fix the welding fixture to the mounting position. The specific structure of the substrate mounting mechanism 800 is not limited and can be adapted to meet the requirements.

[0052] Please see Figure 2 and Figure 5 In one example of the welding fixture of this utility model, the second clamping mechanism 400 includes a mounting plate 420, which is detachably connected to the side of the first clamping body 320 and the second clamping body 330 away from the substrate 600. At least one of the first clamping body 320 and the second clamping body 330 is movably connected to the mounting plate 420 to adjust the distance between the first clamping body 320 and the second clamping body 330. The mounting plate 420 is provided with a through hole for the first welding piece 100 to pass through, a third mounting hole 421 for fixing the first clamping body 320, and a fourth mounting hole 422 for mounting the second clamping body 330. The third mounting hole 421 and the fourth mounting hole 422 can both be elongated holes, or one of them can be an elongated hole. The mounting plate 420 realizes the connection between the first clamping mechanism 300 and the second clamping mechanism 400, and is used to install other structural components of the second clamping mechanism 400, which is beneficial for positioning and clamping the first welding piece 100 and the second welding piece 200. In addition, the mounting plate 420 is connected to the side of the first clamping body 320 and the second clamping body 330 away from the base plate 600, which further improves the reliability of the installation and fixation of the first clamping body 320 and the second clamping body 330.

[0053] Please see Figure 2 and Figure 5 In one example of the welding fixture of this utility model, the second clamping mechanism 400 further includes a two-dimensional moving component 430. The two-dimensional moving component 430 is detachably mounted on the side of the mounting plate 420 opposite to the first clamping mechanism 300. The two-dimensional moving component 430 is provided with a second positioning clamping part 410, which can move with the two-dimensional moving component 430 along a first direction and a second direction. The first direction and the second direction are perpendicular to each other in the horizontal plane. The first direction is as follows: Figure 5 The X direction is shown, and the second direction is as follows: Figure 5 The Y direction is shown in the diagram. The two-dimensional moving component 430 can have various structural forms, such as a cam mechanism, a guide rail slider mechanism, or a linkage mechanism, and is not limited thereto. The two-dimensional moving component 430 enables the second clamping part to move along both the first and second directions. By adjusting the position of the second clamping part, it can drive the second welding parts 200 of different sizes, structures, and shapes to move, thereby achieving contact with the first welding part 100 at a preset welding connection point. This configuration improves the compatibility of the second clamping mechanism 400.

[0054] Please see Figure 5 and Figure 7 In one example of the welding fixture of this utility model, the two-dimensional moving component 430 includes a first slider 431 and at least one second slider 432. The first slider 431 is movably mounted on the mounting plate 420 along a first direction, and the movability of the first slider 431 is achieved by a combination of an elongated hole and bolts. At least one second slider 432 is movably mounted on the first slider 431 along a second direction, and the movability of the second slider 432 is also achieved by a combination of an elongated hole and bolts. The second slider 432 is provided with a welding part mounting hole 4321 for mounting the second welding part 200, and the welding part mounting hole 4321 forms a second positioning clamping part 410. The number of second sliders 432 can be one or more, and there is no limitation on this. In this embodiment, there are two, so the second positioning clamping part 410 includes two welding part mounting holes 4321. This arrangement can better fix the second welding part 200. Specifically, the second welded component 200 can move along the second direction with the second slider 432, and the first slider 431 and the second welded component 200 can move together with the first slider 431 along the first direction to realize the change of the position of the second welded component 200 in the horizontal plane, thereby realizing the welding position of the second welded component 200 and the first welded component 100 with different structural forms, and improving the compatibility of welding fixtures.

[0055] Please see Figure 5 and Figure 7In one example of the welding fixture of this utility model, the sliding contact surfaces of the first slider 431 and the second slider 432 include a concave-convex fit structure 433. The concave-convex fit structure 433 can have a recess on the side of the first slider 431 facing the second slider 432 and a protrusion on the side of the second slider 432 facing the first slider 431; alternatively, it can have a protrusion on the side of the first slider 431 facing the second slider 432 and a recess on the side of the second slider 432 facing the first slider 431. There is no limitation on this. In this embodiment, a recess is provided on the first slider 431 and a protrusion is provided on the second slider 432. The concave-convex fit structure can guide and position the sliding between the first slider 431 and the second slider 432, improving the smoothness of sliding and the accuracy of locking. Preferably, the two sidewalls of the recess and the two sidewalls of the protrusion are both inclined surfaces, which can better guide and position the slider.

[0056] Please see Figure 2 and Figure 6 In one example of the welding fixture of this utility model, the welding fixture further includes a copper sleeve mounting mechanism 700. The copper sleeve mounting mechanism 700 includes a first mounting block 710 and a second mounting block 720 disposed opposite to each other. Both the first mounting block 710 and the second mounting block 720 are movably mounted on the side of the mounting plate 420 facing the two-dimensional moving component 430 along a first direction. The first direction is as follows: Figure 1 and Figure 8 The X direction is shown in the figure. In this embodiment, the first mounting block 710 and the second mounting block 720 are adjustable through the third mounting hole 421 and the fourth mounting hole 422 mounted on the mounting plate 420. Both the first mounting block 710 and the second mounting block 720 have multiple copper sleeve mounting holes 730 for fixing the welding copper sleeve 500 on the side opposite to the mounting plate 420. The mobility of the first mounting block 710 and the second mounting block 720 along the first direction enables the positional adjustability of the welding copper sleeve 500 to meet the clamping requirements of different welding connection positions between different welding copper sleeves 500 and the second welding assembly. In addition, the multiple copper sleeve mounting holes 730 can provide installation positions for welding copper sleeves 500 with various hole spacings, further improving the compatibility of the welding fixture with welding copper sleeves 500 of different structural forms and specifications.

[0057] Please see Figure 7 Considering that the first welded component 100 in this embodiment is a cylindrical battery, and the second welded component 200 is a positive electrode conductive strip 210 or a negative electrode conductive strip 220, in order to improve welding efficiency, in one example of the welding fixture of this utility model, two two-dimensional moving components 430 are provided on the mounting plate 420, and the two two-dimensional moving components 430 are arranged opposite to each other. One two-dimensional moving component 430 is used to clamp and position the positive electrode guide strip. Please refer to [link to relevant documentation]. Figure 1Adjust the two-dimensional moving component 430 according to welding requirements to ensure the positive conductive strip 210 is in close contact with the positive terminal of the cylindrical battery; another two-dimensional moving component 430 clamps and positions the negative guide strip. Please refer to [link to relevant documentation]. Figure 8 The two-dimensional moving component 430 is adjusted according to welding requirements to ensure that the negative conductive strip 220 is tightly attached to the negative terminal of the cylindrical battery. After the initial adjustment and positioning, no further adjustment of the two-dimensional moving component 430 is required, and it can be reused. Only the welding copper sleeves 500 for the positive and negative electrodes need to be replaced. This fully utilizes the existing structure and space of the mounting plate 420, simultaneously achieving the clamping and positioning of the positive and negative conductive strips 210 and 220, thus improving the space utilization of the mounting plate 420. The two two-dimensional moving components 430 expand the working capacity of the welding fixture, allowing for the simultaneous clamping and positioning of the third welding component and the first welding component 100, and enabling welding and fixing in conjunction with welding equipment. Two welding processes are completed in one clamping, improving work efficiency.

[0058] Considering that the welding copper sleeves 500 used for welding the positive conductive strip 210 and the negative conductive strip 220 are different, the positive welding copper sleeve 510 should be used when welding the positive conductive strip 210. Please refer to [link / reference]. Figure 1 When welding the negative electrode conductive strip 220, use the negative electrode welding copper sleeve 520. Please refer to [link / reference]. Figure 8 Welding different conductive strips requires replacing the welding copper sleeve 500. In one example of the welding fixture of this utility model, the structures of the first mounting block 710 and the second mounting block 720 are asymmetrical. Specifically, the hole spacing or hole diameter of the copper sleeve mounting holes 730 can be different. When replacing the welding copper sleeve 500, the asymmetrical structure allows for quick and accurate determination of the installation direction of the welding copper sleeve 500. It can also be used to quickly and accurately replace and install different welding copper sleeves 500, reducing the error rate and improving installation efficiency. Preferably, the welding copper sleeve 500 is installed onto the copper sleeve mounting hole 730 by the elastic component 740 and the clamping bolt 750. This arrangement allows the conductive strip and the cylindrical battery to be pressed together under pressure, thereby improving the welding quality.

[0059] This utility model's welding fixture, through the combined action of the first clamping mechanism, the second clamping mechanism, and the welding copper sleeve, improves the compatibility of the welding fixture in this technical solution. It can be reused after a single development, reducing the development cycle and saving development and manufacturing costs. Therefore, this utility model effectively overcomes some practical problems in the prior art, thus having high utilization value and practical significance. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A welding fixture, characterized in that, The welding fixture is used to clamp and position the first and second weldment parts, and to cooperate with the welding equipment to weld the first and second weldment parts together. The welding fixture includes: The first clamping mechanism includes a first positioning clamping part that is adjustable in size for clamping the first welded part; The second clamping mechanism is detachably mounted on the first clamping mechanism. The second clamping mechanism includes a second positioning clamping part for clamping the second welded part and whose position is adjustable. The second clamping mechanism is configured to enable the second welded part and the preset welding connection part of the first welded part to be connected. A welding copper sleeve is detachably installed on the side of the second clamping mechanism away from the first clamping mechanism, and presses the part where the first welded part and the second welded part meet. The welding copper sleeve is provided with positioning holes corresponding to the preset welding parts of the first welded part and the second welded part.

2. The welding fixture according to claim 1, characterized in that, The first clamping mechanism includes a first clamping body and a second clamping body that are arranged opposite to each other and have an adjustable spacing. The first clamping body has a first cavity extending through the height direction of the first clamping body on the side facing the second clamping body. The second clamping body has a second cavity opposite to the first cavity and extending through the height direction of the second clamping body on the side facing the first clamping body. The first cavity and the second cavity form the first positioning clamping part.

3. The welding fixture according to claim 2, characterized in that, The welding fixture also includes a base plate. The first clamp and the second clamp are detachably mounted on the base plate. The height direction of the first positioning clamp is perpendicular to the base plate. At least one of the first clamp and the second clamp is movably connected to the base plate to adjust the distance between the first clamp and the second clamp.

4. The welding fixture according to claim 3, characterized in that, The second clamping mechanism includes a mounting plate, which is detachably connected to the side of the first clamping body and the second clamping body away from the substrate. At least one of the first clamping body and the second clamping body is movably connected to the mounting plate to adjust the distance between the first clamping body and the second clamping body. The mounting plate is provided with a through hole for the first welded part to pass through.

5. The welding fixture according to claim 4, characterized in that, The second clamping mechanism further includes a two-dimensional moving component, which is detachably mounted on the side of the mounting plate away from the first clamping mechanism. The two-dimensional moving component is provided with a second positioning clamping part, which can move along the first direction and the second direction with the two-dimensional moving component. The first direction and the second direction are perpendicular to each other in the horizontal plane.

6. The welding fixture according to claim 5, characterized in that, The two-dimensional moving component includes a first slider and at least one second slider. The first slider is movably mounted on the mounting plate along the first direction, and at least one second slider is movably mounted on the first slider along the second direction. The second slider is provided with a welding component mounting hole for mounting a second welding component, and the welding component mounting hole forms the second positioning clamping part.

7. The welding fixture according to claim 6, characterized in that, The sliding contact surfaces of the first slider and the second slider include a concave-convex fit structure.

8. The welding fixture according to claim 5, characterized in that, The welding fixture also includes a copper sleeve mounting mechanism, which includes a first mounting block and a second mounting block arranged opposite to each other. Both the first mounting block and the second mounting block can be movably mounted on the side of the mounting plate facing the two-dimensional moving component along the first direction. Both the first mounting block and the second mounting block have a plurality of copper sleeve mounting holes for fixing the welding copper sleeve on the side away from the mounting plate.

9. The welding fixture according to claim 8, characterized in that, The mounting plate is provided with two two-dimensional moving components, which are arranged opposite to each other.

10. The welding fixture according to claim 9, characterized in that, The structures of the first mounting block and the second mounting block are asymmetrical.

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