A tapered resistance welding device

Abstract

This utility model provides an end-cone resistance welding device, including a support assembly, the support assembly including a support, a support plate fixed on the support, and a drive motor fixed below the support plate; a positioning assembly including a base, the drive motor driving the base to rotate, the base being connected to a subbase via a first horizontal moving platform, a lifting mechanism fixed on the subbase, a positioning seat connected to the lifting mechanism, a positioning disk fixed on the positioning seat, and an annular positioning groove provided on the edge of the positioning disk; a tensioning component including a threaded rod threadedly connected to the positioning disk, a tie member fixed at the top of the threaded rod, and a clamping groove provided on the tie member; and a welding assembly including a portal frame, a vertically arranged first welding torch and a horizontally arranged second welding torch fixed at the top of the portal frame, the first welding torch being fixed on the first horizontal moving platform. This resistance welding device has a simple structure, can quickly position and weld end cones, and can ensure welding quality and welding effect.

Description

Technical Field

[0001] This utility model relates to the field of end-cone welding, and in particular to an end-cone resistance welding device. Background Technology

[0002] End cones are important components in automotive exhaust systems, typically welded together from two half-shells, used to connect different parts of the exhaust system. The following technical problems exist in the traditional end cone welding process:

[0003] 1. Inaccurate positioning: The irregular shape of the end cone makes it difficult for traditional fixtures to achieve precise positioning, which can easily lead to welding position deviation, affecting welding quality and subsequent assembly;

[0004] 2. Low welding efficiency: Existing welding processes mostly rely on manual operation, requiring multiple spot welds to complete a component, resulting in low production efficiency;

[0005] 3. Unstable welding quality: During resistance welding, factors such as electrode tip wear, inaccurate welding position, and unstable welding parameters can easily lead to problems such as detachment and incomplete welding.

[0006] 4. Welding deformation problem: During the welding process, due to the stress release of materials and the influence of welding heat, the end cone is prone to deformation, which leads to a decrease in the product qualification rate.

[0007] To address the above issues, a dedicated end-cone welding device needs to be designed to improve the welding efficiency of end-cones. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an end-cone resistance welding device. This resistance welding device has a simple structure, can quickly position and weld end cones, and can ensure welding quality and welding effect.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: an end-cone resistance welding device, comprising...

[0010] A bracket assembly, the bracket assembly including a bracket, a support plate fixed on the bracket, and a drive motor fixed below the support plate;

[0011] A positioning component includes a base, a drive motor drives the base to rotate, the base is connected to a base via a first horizontal moving platform, a lifting mechanism is fixed on the base, a positioning seat is connected to the lifting mechanism, a positioning disk is fixed on the positioning seat, and an annular positioning groove is provided on the edge of the positioning disk;

[0012] A tensioning component includes a threaded rod that is threadedly connected to a positioning plate. A tensioning member is fixed at the top of the threaded rod, and a clamping groove is provided on the tensioning member.

[0013] A welding assembly includes a gantry frame, on the top of which a first welding torch is vertically arranged and a second welding torch is horizontally arranged, the second welding torch being fixed to a first horizontal moving platform.

[0014] Furthermore, the tie member includes three ring-shaped clamping arms, and the clamping grooves are respectively formed on the clamping arms.

[0015] Furthermore, the portal frame includes a first side plate and a second side plate, and a top plate is fixed on the first side plate and the second side plate, and the welding assembly is fixed on the top plate.

[0016] Furthermore, the positioning disc is fixed to the positioning seat by screws.

[0017] Furthermore, the lifting mechanism, the first horizontal moving platform, and the second horizontal moving platform are all linear slides.

[0018] Furthermore, the positioning seat is provided with a weight reduction cavity.

[0019] Furthermore, a limit rod is fixed to the upper end of the lifting mechanism, and a limit plate is fixed to the upper part of the positioning seat.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This resistance welding device has a simple structure, can quickly position and weld the end cone, and can ensure welding quality and welding effect;

[0022] 2. The tie-up assembly enables the end cone to be positioned vertically and pressed down vertically, ensuring the end cone remains stable during welding.

[0023] 3. The positioning component is raised and lowered by the lifting mechanism, the end cone is moved horizontally by the first horizontal moving platform, and the second welding gun is moved by the second horizontal moving component, so that the three welding points can be evenly distributed in a ring shape, reducing the technical requirements for the operator. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present invention;

[0025] Figure 2 This is a connection diagram of the positioning disc and the connecting component of this utility model;

[0026] Figure 3This is a structural diagram of the welding assembly of this utility model;

[0027] Figure 4 This is a structural diagram of the end cone of this utility model;

[0028] In the diagram: 1. Bracket; 2. Support plate; 3. Drive motor; 4. Base; 5. First horizontal moving platform; 6. Lifting mechanism; 7. Positioning seat; 8. Positioning plate; 9. Annular positioning groove; 10. Threaded rod; 11. Limiting plate; 12. Tie-fitting component; 13. Pressing groove; 14. Portal frame; 15. First welding torch; 16. Second welding torch; 17. Pressing arm; 18. First side plate; 19. Second side plate; 20. Top plate; 21. Weight reduction cavity; 22. Limiting rod; 23. End cone; 24. Second horizontal moving platform; Detailed Implementation

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 4 The illustrated end-taper resistance welding apparatus includes

[0031] A bracket assembly, the bracket assembly including a bracket 1, a support plate 2 fixed on the bracket 1, and a drive motor 3 fixed below the support plate 2;

[0032] A positioning component, the positioning component includes a base 4, the drive motor 3 drives the base 4 to rotate, the base 4 is connected to a base via a first horizontal moving platform 5, a lifting mechanism 6 is fixed on the base, a positioning seat 7 is connected to the lifting mechanism 6, a positioning disk 8 is fixed on the positioning seat 7, and an annular positioning groove 9 is provided on the edge of the positioning disk 8;

[0033] A tensioning component includes a threaded rod 10, which is threadedly connected to a positioning plate 8. A tensioning member 12 is fixed at the top of the threaded rod 10, and a pressing groove 13 is provided on the tensioning member 12.

[0034] A welding assembly includes a gantry frame 14, on the top of which a vertically arranged first welding torch 15 and a horizontally arranged second welding torch 16 are fixed, and the second welding torch 15 is fixed on a first horizontal moving platform 5.

[0035] The process of using this utility model is as follows: The inner and outer cones of the end cone 23 are assembled together. Then, the positioning assembly is lowered by the lifting mechanism 6 to move to the bottom. The assembled end cone 23 is connected to the positioning plate 8 of the positioning assembly. Specifically, the edge of the end cone 23 is placed in the annular positioning groove 9. Then, the tension member is threaded onto the positioning plate 8 via the threaded rod 10. During the threaded connection process, the tension member 12 on it moves downward, thereby pressing the end cone 23 vertically through the pressing groove 13. After the end cone 23 is pressed tightly, the lifting mechanism 6 rises, allowing the first welding torch 15 to enter the cavity of the end cone 23. At this time, the first horizontal moving mechanism moves, causing the inner wall of the end cone 23 to contact the first welding torch 15. Then, the first horizontal moving platform 5 is activated, causing the second welding torch 16 to move horizontally, gradually approaching the first welding torch 15, so that both the first welding torch 15 and the second welding torch 16 press against the end cone 23 (both the first and second welding torches are fixed on the welding torch holder). The first welding torch 15 and the second welding torch 16 are energized to complete the welding. Subsequently, the end cone 23 is reset under the action of the lifting mechanism 6, and the drive motor 3 rotates, causing the end cone 23 to rotate 120 degrees. The above actions are repeated to complete the welding of the second point of the end cone 23. Then, the above actions are repeated to complete the welding of the third point. Finally, the pull structure is unscrewed, and the welded end cone can be removed.

[0036] Furthermore, the tie member 12 includes three ring-shaped clamping arms 17, and the clamping grooves 13 are respectively formed on the clamping arms 17. Specifically, the tie member 12 of this utility model uses clamping arms 17, which can clamp the end cone 23 while still providing sufficient space for the first welding torch 15 to enter the end cone 23.

[0037] Furthermore, the portal frame 14 includes a first side plate 18 and a second side plate 19, and a top plate 20 is fixed on the first side plate 18 and the second side plate 19. The welding assembly is fixed on the top plate 20. Specifically, the portal frame 14 of this utility model uses two side plates, and the top plate 20 installed on the top of the two side plates is used to install the welding assembly, which facilitates three-point welding of the end cone 23.

[0038] Furthermore, the positioning disc 8 is fixed to the positioning base 7 with screws. Specifically, the positioning disc 8 is fixed to the positioning base 7 with screws, so that the positioning disc 8 can be replaced according to the model and size of the end cone 23, making the device more versatile.

[0039] Furthermore, the lifting mechanism 6, the first horizontal moving platform 5, and the second horizontal moving platform 24 are all linear slides. Specifically, the lifting mechanism 6, the first horizontal moving platform 5, and the second horizontal moving platform 24 of this utility model all adopt linear slides, which can be purchased directly from the market. The positioning seat is fixed on the slide of the lifting mechanism, the base is fixed on the slide of the first horizontal moving platform, and the second welding torch is fixed on the slide of the second horizontal moving platform through the welding torch holder.

[0040] Furthermore, the positioning seat 7 is provided with a weight-reducing cavity 21. In order to reduce the weight of the positioning seat 7, the present invention provides a weight-reducing cavity 21 in the positioning seat 7, which can effectively reduce the weight of the positioning seat 7, reduce the load on the lifting mechanism 6, and effectively reduce material consumption.

[0041] Furthermore, a limiting rod 22 is fixed to the upper end of the lifting mechanism 6, and a limiting plate 11 is fixed to the upper end of the positioning seat 7. Specifically, in this invention, a limiting rod 22 is fixed to the upper end of the lifting mechanism 6. In this way, when the positioning seat 7 rises, it can be limited by the limiting rod 22 to prevent excessive movement and inconsistent welding point positions.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tapered resistance welding apparatus, characterized in that, include A bracket assembly, the bracket assembly including a bracket, a support plate fixed on the bracket, and a drive motor fixed below the support plate; A positioning component includes a base, a drive motor drives the base to rotate, the base is connected to a base via a first horizontal moving platform, a lifting mechanism is fixed on the base, a positioning seat is connected to the lifting mechanism, a positioning disk is fixed on the positioning seat, and an annular positioning groove is provided on the edge of the positioning disk; A tensioning component includes a threaded rod that is threadedly connected to a positioning plate. A tensioning member is fixed at the top of the threaded rod, and a clamping groove is provided on the tensioning member. A welding assembly includes a gantry frame, on the top of which a first welding torch is vertically arranged and a second welding torch is horizontally arranged, the second welding torch being fixed to a first horizontal moving platform.

2. The end-cone resistance welding device according to claim 1, characterized in that: The tie member includes three ring-shaped clamping arms, and the clamping grooves are respectively formed on the clamping arms.

3. The end-taper resistance welding device according to claim 2, characterized in that: The portal frame includes a first side plate and a second side plate, and a top plate is fixed on the first side plate and the second side plate. The welding assembly is fixed on the top plate.

4. The end-taper resistance welding apparatus according to claim 3, characterized in that: The positioning plate is fixed to the positioning base with screws.

5. The end-taper resistance welding apparatus according to claim 4, characterized in that: The lifting mechanism, the first horizontal moving platform, and the second horizontal moving platform are all linear slides.

6. The end-taper resistance welding apparatus according to claim 5, characterized in that: The positioning seat is provided with a weight reduction cavity.

7. The end-taper resistance welding apparatus according to claim 6, characterized in that: The upper end of the lifting mechanism is fixed with a limit rod, and the upper part of the positioning seat is fixed with a limit plate.

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