Spot welding positioning tool

Abstract

The utility model belongs to welding fixture technical field, concretely relates to a spot welding positioning tool, including positioning table, longitudinal positioning board, longitudinal pressure mechanism, a plurality of horizontal pressure mechanism, a plurality of horizontal positioning mechanism, a plurality of guide rods and a plurality of cantilever beam mechanism, the utility model can be adjusted quickly in the positioning of long, wide, high three dimensions, thereby can be quickly adapted to the workpiece of different size and kind through simple adjustment, improved the versatility, and can satisfy the three -dimensional space positioning demand of complex workpiece, also reduced the tooling cost, shortened the production line interruption time, improved production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of welding fixture technology, specifically relating to a spot welding positioning fixture. Background Technology

[0002] Spot welding is a common connection process in the assembly of metal components. In the production mode of multiple varieties and small batches, it is often necessary to spot weld workpieces of various sizes and specifications. The rapid and accurate positioning of the workpieces is the key to ensuring welding quality and efficiency, which requires the cooperation of spot welding positioning fixtures.

[0003] Currently, the industry mostly uses dedicated positioning fixtures, whose positioning and clamping mechanisms are usually fixed designs, designed only for the specific dimensions of a workpiece. While this can ensure the positioning accuracy of a single workpiece, it has poor versatility. This means that if the size or type of the workpiece changes, the existing dedicated fixtures will become unusable and must be customized. This increases production costs and causes long production line interruptions due to fixture replacement, thus reducing production efficiency.

[0004] In addition, in order to improve the adaptability of tooling, some adjustable general-purpose tooling has emerged; however, the degree of freedom of adjustment of such tooling is usually limited, and it can often only achieve position adjustment in a single direction, which makes it difficult to meet the positioning requirements of complex workpieces in three-dimensional space, and cannot be quickly adapted to workpieces of different sizes and types through simple adjustments. Utility Model Content

[0005] The purpose of this utility model is to provide a spot welding positioning fixture that solves the technical problems of poor versatility, limited adjustment freedom, and inability to meet the three-dimensional spatial positioning requirements of complex workpieces in the existing technology.

[0006] This utility model discloses a spot welding positioning fixture, comprising: The positioning platform has a first set of sliding grooves, a second set of sliding grooves, and a third set of sliding grooves arranged side by side at intervals on its top surface. A longitudinal positioning plate is slidably mounted on the second slide rail assembly; The longitudinal pressing mechanism is slidably mounted on the second slide rail assembly; Several transverse pressing mechanisms are slidably mounted on the first slide rail group; Several lateral positioning mechanisms are slidably mounted on the third slide rail group; Multiple guide rods are installed on the top surface of the positioning platform, located above the third slide rail group, and parallel to the third slide rail group; A plurality of cantilever beam mechanisms, each of the cantilever beam mechanisms comprising: The base is slidably fitted onto the multiple guide rods; The flip arm is rotatably connected to the base at one end and can be locked after being rotated to a horizontal position, so that the other end is located above the second slide group; A positioning component is detachably mounted to the other end of the tilting arm.

[0007] This application utilizes multiple sets of sliding grooves and guide rods to quickly adjust the positioning in the length, width, and height dimensions. This allows for rapid adaptation to workpieces of different sizes and types through simple adjustments, improving versatility and meeting the three-dimensional spatial positioning requirements of complex workpieces. It also reduces tooling costs, shortens production line downtime, and improves production efficiency.

[0008] Based on the above technical solution, the solution of this application can be further improved as follows: Preferably, the longitudinal clamping mechanism includes: The longitudinal pressure base is slidably mounted on the second slide rail assembly; A longitudinal drive component is fixedly installed on the top surface of the longitudinal pressure base; The longitudinal pressure push plate is fixedly installed on the drive end of the longitudinal drive component. This solution enables rapid position adjustment and automated clamping, and improves the adaptability and clamping efficiency for workpieces of different sizes, ensuring the stability and consistency of spot welding operations.

[0009] Preferably, the lateral clamping mechanism includes: A horizontal pressure base is slidably mounted on the first slide rail assembly; A lateral drive component is fixedly installed on the top surface of the lateral pressure base; A horizontal pressure pusher plate is fixedly installed on the drive end of the horizontal drive component. This solution enables rapid position adjustment and automated clamping, while also improving adaptability to workpieces of different sizes and clamping efficiency, thus ensuring the stability and consistency of spot welding operations.

[0010] Preferably, the longitudinal positioning plate includes a vertical plate and a base plate that are perpendicular to each other. The vertical plate is used to longitudinally limit the workpiece, and the base plate is slidably disposed on the second slide rail assembly. By adopting this solution, the longitudinal reference position of the workpiece can be quickly adjusted and accurately positioned, and it can fully fit with the end of the workpiece, thereby ensuring positioning accuracy and improving versatility and adjustment efficiency.

[0011] Preferably, the lateral positioning mechanism includes: The support block is slidably mounted on the third slide groove group, and has a horizontally penetrating guide groove on the bottom surface and a positioning hole communicating with the guide groove on the top surface. The L-shaped block includes mutually perpendicular vertical limiting blocks and adjusting horizontal blocks. The vertical limiting blocks are used to limit the workpiece laterally. The adjusting horizontal blocks are in sliding fit with the guide groove, and multiple locking holes are spaced apart on the adjusting horizontal blocks along the sliding direction. The L-shaped block and the support block can be fixed by tightening the bolt and nut pair passing through the positioning hole and any of the locking holes. This solution enables rapid adjustment and reliable locking of the transverse reference plane in the workpiece width direction, ensuring the stability of the positioning reference during the welding process and flexibly adapting to workpieces of different widths.

[0012] Preferably, the base has a plurality of sliding holes on its side that correspond one-to-one with the guide rod; The top surface of the base is provided with at least one L-shaped groove, and the transverse section of the L-shaped groove is connected to a sliding hole for forming an elastic clamping arm on the base; the top surface of the elastic clamping arm is provided with a plurality of mounting holes, and the bottom of the transverse section of the L-shaped groove is provided with locking holes corresponding to the mounting holes one by one. By tightening the bolt and nut pair passing through the mounting hole and the corresponding locking hole, the elastic clamping arm can be driven to produce elastic deformation, thereby gripping the corresponding guide rod. This solution enables the base to be quickly and reliably locked and released on the guide rod, thereby simplifying the tooling adjustment operation steps and improving adjustment efficiency and positioning stability.

[0013] Preferably, the two ends of the multiple guide rods are fixedly installed on the top surface of the positioning platform by a bracket; by adopting this solution, the multiple guide rods can be stably erected on the top surface of the positioning platform, thereby providing a stable sliding reference for the cantilever beam mechanism and ensuring the consistency of the movement trajectory.

[0014] Preferably, it includes: A baffle is vertically installed on the top surface of the positioning platform, parallel to the third slide group, and located on the side of the third slide group away from the second slide group. With this solution, a longitudinal barrier is formed at the edge of the positioning platform, which effectively blocks the sparks and spatter generated during spot welding, thus protecting personnel safety, preventing surrounding pollution, and maintaining the cleanliness of the area.

[0015] Through the above technical solution, this utility model achieves the following beneficial effects: 1. The positioning of this application can be quickly adjusted in the three dimensions of length, width and height, so that it can be quickly adapted to workpieces of different sizes and types through simple adjustment, which improves versatility, meets the three-dimensional spatial positioning requirements of complex workpieces, reduces tooling costs, shortens production line downtime and improves production efficiency. 2. This application enables the base to be locked and released quickly and reliably on the guide rod, thereby simplifying the tooling adjustment operation steps and improving adjustment efficiency and positioning stability. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the spot welding positioning fixture described in a specific embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 The top view of the cantilever beam mechanism in the spot welding positioning fixture shown; Figure 4 for Figure 1 The rear view of the cantilever beam mechanism in the spot welding positioning fixture shown. Figure 5 for Figure 1 The front view of the transverse positioning mechanism in the spot welding positioning fixture shown. Figure 6 for Figure 1 The rear view of the transverse positioning mechanism in the spot welding positioning fixture shown. Explanation of reference numerals in the attached figures: 1. Positioning stage; 101. First slide rail group; 102. Second slide rail group; 103. Third slide rail group; 2. Longitudinal positioning plate; 21. Vertical plate; 22. Base plate; 3. Longitudinal clamping mechanism; 31. Longitudinal pressure base; 32. Longitudinal drive component; 33. Longitudinal pressure push plate; 4. Lateral pressing mechanism; 41. Lateral pressing base; 42. Lateral driving component; 43. Lateral pressing push plate; 5. Lateral positioning mechanism; 51. Support block; 5101. Guide groove; 5102. Positioning hole; 52. L-shaped block; 521. Limiting vertical block; 522. Adjusting horizontal block; 52201. Locking hole; 6. Guide rod; 7. Cantilever beam mechanism; 71. Base; 7101. Sliding hole; 7102. L-shaped groove; 7103. Elastic clamping arm; 7104. Mounting hole; 7105. Locking hole; 72. Tilting arm; 73. Positioning assembly; 8. Support; 9. Baffle. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the stated features.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0022] Example: like Figure 1 As shown in the figure, this application discloses a spot welding positioning fixture, which can quickly adapt to the positioning requirements of workpieces of different sizes and types through simple adjustments, significantly improving production efficiency and reducing tooling costs. Its specific structure includes: a positioning table 1, a longitudinal positioning plate 2, a longitudinal pressing mechanism 3, several transverse pressing mechanisms 4, several transverse positioning mechanisms 5, multiple guide rods 6, and several cantilever beam mechanisms 7.

[0023] The positioning table 1 is the basic platform of the entire tooling. Its top surface is provided with a first set of slide rails 101, a second set of slide rails 102 and a third set of slide rails 103 arranged side by side at intervals. It can provide position adjustment in the length direction of the workpiece and improve the layout flexibility of workpiece positioning and clamping.

[0024] The longitudinal positioning plate 2 will be in close contact with one end of the workpiece to provide a precise and fixed positioning reference surface for the workpiece in the longitudinal direction (i.e., the length direction), and it is slidably set on the second slide group 102, realizing the independent adjustment of the longitudinal reference surface in the length direction of the workpiece.

[0025] The longitudinal clamping mechanism 3 is used to apply clamping force to the other end of the workpiece from the longitudinal direction, thereby cooperating with the longitudinal positioning plate 2 to ensure that the workpiece will not move in the longitudinal direction, thus completing the longitudinal positioning. It is slidably set on the second slide group 102, realizing the independent adjustment of the clamping surface in the length direction of the workpiece.

[0026] Several transverse pressing mechanisms 4 are used to apply pressing force to one side of the workpiece from the transverse direction, thereby pairing with the transverse positioning mechanism 5 to ensure that the workpiece will not move in the transverse direction, thus completing the transverse positioning. Furthermore, it is slidably set on the first slide group 101, realizing the independent adjustment of the pressing surface in the length direction of the workpiece. This can adapt to workpieces of different lengths and avoid interference with spot welding.

[0027] Several transverse positioning mechanisms 5 are closely attached to the other side of the workpiece to provide a positioning reference for the workpiece in the transverse direction (i.e., the width direction). By adjusting their own transverse extension and retraction, the transverse reference surface can be independently adjusted in the width direction of the workpiece to adapt to workpieces of different widths. Furthermore, they are slidably mounted on the third slide group 103 to achieve independent adjustment of the transverse reference surface in the length direction of the workpiece. This not only adapts to workpieces of different lengths but also avoids interference with spot welding.

[0028] Multiple guide rods 6 are used to provide a precise and stable sliding track for the cantilever beam mechanism 7. They are installed on the top surface of the positioning table 1 and are located above and parallel to the third slide rail group 103, so that the cantilever beam mechanism 7 can make a wide range of smooth, non-interfering movements above the workpiece.

[0029] like Figure 3 As shown, each cantilever beam mechanism 7 includes: The base 71 is slidably mounted on multiple guide rods 6 to achieve overall position adjustment of the mechanism in the length direction of the workpiece, thereby adjusting the pressing position on the top of the workpiece. The flipping arm 72 has one end rotatably connected to the base 71 and can be locked after being rotated to a horizontal position, so that the other end is located above the second slide rail group 102, and is used to limit and unlock the workpiece in the vertical direction by flipping it up and down. The positioning component 73 can be a positioning pin, positioning tube, etc., which is detachably installed on the other end of the flipping arm 72. This allows for quick replacement of the corresponding positioning component 73 according to different positioning pins, positioning holes, or positioning surfaces on different workpieces, thereby improving the versatility of the tooling.

[0030] For example, the first slide group 101, the second slide group 102, and the third slide group 103 are all T-shaped grooves; correspondingly, the longitudinal positioning plate 2, the longitudinal pressing mechanism 3, the transverse pressing mechanism 4, and the transverse positioning mechanism 5 are all installed in their respective slide groups by T-bolts and pressing nuts. This method allows each mechanism to slide smoothly along the slide, thereby achieving rapid position adjustment. Furthermore, by tightening the pressing nuts, the mechanism can be firmly locked after being adjusted to the target position, ensuring positioning accuracy.

[0031] For example, the other end of the tilting arm 72 has a mounting groove; the positioning assembly 73 includes an L-shaped plate, an adjusting plate and a positioning tube. The vertical section of the L-shaped plate is connected to the mounting groove by a slotted bolt, so that its vertical height can be adjusted. The adjusting plate is connected to the horizontal section of the L-shaped plate by a slotted bolt, so that its horizontal position can be adjusted. The positioning tube is installed on the extended end of the adjusting plate and can be fitted onto the corresponding positioning post on the workpiece. Its adjustable design greatly improves its versatility.

[0032] This utility model, by employing multiple sets of sliding grooves in conjunction with guide rods 6, allows for rapid adjustment of positioning in the length, width, and height dimensions. This enables quick adaptation to workpieces of different sizes and types through simple adjustments, improving versatility and meeting the three-dimensional spatial positioning requirements of complex workpieces. It also reduces tooling costs, shortens production line downtime, and improves production efficiency.

[0033] In some embodiments, such as Figure 2 As shown, the longitudinal clamping mechanism 3 includes: The longitudinal pressing base 31 is slidably mounted on the second slide rail group 102 and can be connected to the second slide rail group 102 by standard parts such as T-bolts, so that the longitudinal pressing mechanism 3 can be fixed at any position in the slide rail according to the different lengths of the workpiece. The longitudinal drive component 32 is fixedly installed on the top surface of the longitudinal pressure base 31 to generate linear thrust. It can be a cylinder, hydraulic cylinder or electric push rod, etc., and can be connected to the control system of the production line to realize automatic clamping and loosening. The longitudinal pressure push plate 33 is fixedly installed at the drive end of the longitudinal drive component 32 and is used to transmit the thrust evenly and stably to the surface of the workpiece to increase the contact area and improve the clamping stability.

[0034] The above design enables rapid position adjustment and automated clamping, while also improving adaptability to workpieces of different sizes and clamping efficiency, thus ensuring the stability and consistency of spot welding operations.

[0035] In some embodiments, such as Figure 2 As shown, the lateral clamping mechanism 4 includes: The transverse pressing base 41 is slidably mounted on the first slide rail group 101 and can be connected to the first slide rail group 101 by standard parts such as T-bolts, so that the transverse pressing mechanism 4 can be fixed at any position in the slide rail according to the different lengths of the workpiece. The transverse drive component 42 is fixedly installed on the top surface of the transverse pressure base 41 and is used to generate linear thrust. It can be a cylinder, hydraulic cylinder or electric push rod, etc., and can be connected to the control system of the production line to realize automatic pressing and releasing. The horizontal pressure push plate 43 is fixedly installed at the drive end of the horizontal drive component 42 and is used to transmit the thrust evenly and stably to the surface of the workpiece in order to increase the contact area and improve the clamping stability.

[0036] The above design enables rapid position adjustment and automated clamping, while also improving adaptability to workpieces of different sizes and clamping efficiency, thus ensuring the stability and consistency of spot welding operations.

[0037] In some embodiments, such as Figure 2 As shown, the longitudinal positioning plate 2 includes a vertical plate 21 and a base plate 22 that are perpendicular to each other. The vertical plate 21 is used to longitudinally limit the workpiece. The base plate 22 is slidably mounted on the second slide rail group 102. It can be connected to the second slide rail group 102 by standard parts such as T-bolts, so that the longitudinal positioning plate 2 can be fixed at any position in the slide rail according to the different lengths of the workpiece.

[0038] Through the above design, the base plate 22 enables rapid adjustment and precise positioning of the longitudinal reference position of the workpiece, and the upright plate 21 can fully fit with the end of the workpiece, thereby ensuring positioning accuracy and improving versatility and adjustment efficiency.

[0039] In some embodiments, such as Figure 5 and Figure 6 As shown, the lateral positioning mechanism 5 includes: The support block 51 is slidably mounted on the third slide rail group 103. Specifically, it can be connected to the third slide rail group 103 through standard parts such as T-bolts, so that the support block 51 can be fixed at any position in the slide rail. The bottom surface is provided with a transversely penetrating guide groove 5101 to provide a precise transverse sliding track and ensure the straightness of the adjustment. The top surface is provided with a positioning hole 5102 communicating with the guide groove 5101 for the bolt and nut pair for fixing the L-shaped block 52 to pass through. L-shaped block 52 includes mutually perpendicular limiting vertical block 521 and adjusting horizontal block 522; the limiting vertical block 521 directly contacts the side of the workpiece and is used to limit the workpiece laterally; the adjusting horizontal block 522 forms a sliding fit with the guide groove 5101 so as to adjust the lateral position of the limiting vertical block 521 by sliding, and the adjusting horizontal block 522 is provided with multiple locking holes 52201 spaced apart along the sliding direction for precise positioning setting; By tightening the bolt and nut pair passing through the positioning hole 5102 and any of the locking holes 52201, a huge clamping force can be generated between the L-shaped block 52 and the support block 51 to fix them firmly, ensuring reliable positioning during the welding process and preventing movement.

[0040] Through the above design, the transverse reference plane can be quickly adjusted and reliably locked in the workpiece width direction, ensuring the stability of the positioning reference during the welding process and flexibly adapting to workpieces of different widths.

[0041] In some embodiments, such as Figure 5 and Figure 6 As shown, the base 71 has multiple sliding holes 7101 on its side that correspond one-to-one with the guide rod 6, which are used to form a sliding pair with the guide rod 6, so that the base 71 can move smoothly along the axial direction of the guide rod 6. The top surface of the base 71 is provided with at least one L-shaped groove 7102. The transverse section of the L-shaped groove 7102 is connected to a sliding hole 7101 for forming an elastic clamping arm 7103 on the base 71. The top surface of the elastic clamping arm 7103 is provided with a plurality of mounting holes 7104. The bottom of the transverse section of the L-shaped groove 7102 is provided with locking holes 7105 corresponding to the mounting holes 7104. Specifically, by tightening the bolt and nut pair passing through the mounting hole 7104 and the corresponding locking hole 7105, the elastic clamping arm 7103 can be driven to produce elastic deformation, thereby gripping the corresponding guide rod 6.

[0042] When the bolt and nut pair is not tightened, the elastic clamping arm 7103 is in a free state, and the base 71 can slide freely on the guide rod 6 through the sliding hole 7101 to adjust its position. After adjusting to the target position, tightening the bolt and nut pair will cause the elastic clamping arm 7103 to undergo elastic deformation, thereby causing its inner wall to tightly hug the guide rod 6, which will generate huge friction force, preventing the base 71 from moving in any direction and achieving reliable locking.

[0043] The above design enables the base 71 to be locked and released quickly and reliably on the guide rod 6, thereby simplifying the tooling adjustment operation steps and improving adjustment efficiency and positioning stability.

[0044] In some embodiments, such as Figure 5 and Figure 6 As shown, the two ends of multiple guide rods 6 are fixedly installed on the top surface of the positioning platform 1 by a bracket 8.

[0045] Through the above design, multiple guide rods 6 can be stably mounted on the top surface of the positioning platform 1, thereby providing a stable sliding reference for the cantilever beam mechanism 7 and ensuring the consistency of the movement trajectory.

[0046] In some embodiments, such as Figure 1 As shown, it includes: The baffle 9 is vertically installed on the top surface of the positioning platform 1 and is parallel to the third slide group 103, and is located on the side of the third slide group 103 away from the second slide group 102.

[0047] Through the above design, a longitudinal barrier is formed at the edge of the positioning platform 1, which effectively blocks the sparks and spatter generated during the spot welding process, and plays a role in protecting personnel safety, preventing surrounding pollution, and maintaining the cleanliness of the area.

[0048] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A spot welding positioning fixture, characterized in that, include: The positioning platform has a first set of sliding grooves, a second set of sliding grooves, and a third set of sliding grooves arranged side by side at intervals on its top surface. A longitudinal positioning plate is slidably mounted on the second slide rail assembly; The longitudinal pressing mechanism is slidably mounted on the second slide rail assembly; Several transverse pressing mechanisms are slidably mounted on the first slide rail group; Several lateral positioning mechanisms are slidably mounted on the third slide rail group; Multiple guide rods are installed on the top surface of the positioning platform, located above the third slide rail group, and parallel to the third slide rail group; A plurality of cantilever beam mechanisms, each of the cantilever beam mechanisms comprising: The base is slidably fitted onto the multiple guide rods; The flip arm is rotatably connected to the base at one end and can be locked after being rotated to a horizontal position, so that the other end is located above the second slide group; A positioning component is detachably mounted on the other end of the tilting arm.

2. The spot welding positioning fixture according to claim 1, characterized in that, The longitudinal clamping mechanism includes: The longitudinal pressure base is slidably mounted on the second slide rail assembly; A longitudinal drive component is fixedly installed on the top surface of the longitudinal pressure base; The longitudinal pressure push plate is fixedly installed at the drive end of the longitudinal drive component.

3. The spot welding positioning fixture according to claim 1, characterized in that, The lateral clamping mechanism includes: A horizontal pressure base is slidably mounted on the first slide rail assembly; A lateral drive component is fixedly installed on the top surface of the lateral pressure base; A horizontal pressure push plate is fixedly installed on the drive end of the horizontal drive component.

4. The spot welding positioning fixture according to claim 1, characterized in that, The longitudinal positioning plate includes a vertical plate and a base plate that are perpendicular to each other. The vertical plate is used to longitudinally limit the workpiece, and the base plate is slidably mounted on the second slide rail assembly.

5. The spot welding positioning fixture according to claim 1, characterized in that, The lateral positioning mechanism includes: The support block is slidably mounted on the third slide groove group, and has a horizontally penetrating guide groove on the bottom surface and a positioning hole communicating with the guide groove on the top surface. The L-shaped block includes mutually perpendicular vertical limiting blocks and adjusting horizontal blocks. The vertical limiting blocks are used to limit the workpiece laterally. The adjusting horizontal blocks are in sliding fit with the guide groove, and multiple locking holes are spaced apart on the adjusting horizontal blocks along the sliding direction. The L-shaped block can be fixed to the support block by tightening the bolt and nut pair that passes through the positioning hole and any of the locking holes.

6. The spot welding positioning fixture according to claim 1, characterized in that, The base has multiple sliding holes on its side that correspond one-to-one with the guide rod; The top surface of the base is provided with at least one L-shaped groove, and the transverse section of the L-shaped groove is connected to a sliding hole for forming an elastic clamping arm on the base; the top surface of the elastic clamping arm is provided with a plurality of mounting holes, and the bottom of the transverse section of the L-shaped groove is provided with locking holes corresponding to the mounting holes one by one. Specifically, by tightening the bolt and nut pair passing through the mounting hole and the corresponding locking hole, the elastic clamping arm can be driven to produce elastic deformation, thereby gripping the corresponding guide rod.

7. The spot welding positioning fixture according to claim 1, characterized in that, Both ends of the multiple guide rods are fixedly installed on the top surface of the positioning platform via a bracket.

8. The spot welding positioning fixture according to claim 1, characterized in that, include: The baffle is vertically installed on the top surface of the positioning platform, parallel to the third slide rail group, and located on the side of the third slide rail group away from the second slide rail group.

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