Automatic double-end spot welding tool for double-outlet silencer
By designing an automatic double-head spot welding fixture for dual-outlet mufflers with a hydraulically driven tilting guide plate and adjustable auxiliary components, the problem of poor versatility of existing fixtures was solved, enabling efficient clamping of mufflers of different specifications, improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU HENGZHUO AUTO PARTS
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-15
AI Technical Summary
The existing semi-automatic spot welding fixture uses fixed clamps, which have poor versatility and cannot adapt to dual-outlet silencers of different specifications and shapes. This means that when the product model changes, the entire set of clamps needs to be replaced, which affects production efficiency and cost.
An automatic double-head spot welding fixture for dual-outlet mufflers was designed. It uses a hydraulic cylinder to drive the inclined guide plate to slide, and combined with adjustable auxiliary components, it can clamp and release mufflers of different specifications, thereby improving the versatility of the fixture.
It enables flexible and adaptable clamping of mufflers of different specifications, improves production efficiency and tooling versatility, reduces the frequency of fixture replacement, and lowers production costs.
Smart Images
Figure CN224238674U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of muffler tooling, and in particular to an automatic double-head spot welding tooling for a double-outlet muffler. Background Technology
[0002] In the modern automotive industry, the dual-exit muffler is a key component for reducing engine exhaust noise and improving driving comfort. Its welding quality and production efficiency directly affect the overall vehicle performance and manufacturing cost.
[0003] Existing semi-automatic spot welding fixtures mostly use fixed clamps, which can only be adapted to a single specification of muffler. Most semi-automatic fixtures use simple fixed clamps, which cannot adapt to dual-outlet mufflers of different specifications and shapes, resulting in poor versatility. When the product model changes, the entire set of clamps needs to be replaced. Therefore, an automatic dual-head spot welding fixture for dual-outlet mufflers is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an automatic double-head spot welding fixture for dual-outlet mufflers, which aims to improve the problem in the prior art that "semi-automatic spot welding fixtures use fixed clamps, have poor versatility, and cannot adapt to dual-outlet mufflers of different specifications and shapes".
[0005] To achieve the above objectives, this utility model adopts the following technical solution: an automatic double-head spot welding fixture for dual-outlet mufflers, comprising a base, with placement frames fixedly connected to the left and right sides of the upper part of the base, and a clamping assembly provided in the middle of the base; the clamping assembly includes a support frame fixedly connected to the middle of the base, a support rod fixedly connected to the outer side of the support frame, a movable component slidably connected to the outer side of the support rod, a connecting component fixedly connected to the lower part of the movable component, a support component fixedly connected to the lower part of the base, a guide plate a and a guide plate b slidably connected to the outer side of the support component, a hydraulic cylinder a fixedly connected to the left side of the guide plate a, a hydraulic cylinder b fixedly connected to the right side of the guide plate b, both hydraulic cylinder a and hydraulic cylinder b fixedly connected to the lower surface of the base, a guide groove penetrating the outer side of the guide plate b and the guide plate a, and the lower part of the connecting component sliding on the inner wall of the guide groove.
[0006] As a further description of the above technical solution:
[0007] The guide plate a and guide plate b are arranged opposite to each other, and the guide grooves on the guide plate a and guide plate b are inclined in opposite directions.
[0008] As a further description of the above technical solution:
[0009] An auxiliary component is slidably connected to the inner wall of the moving part. The auxiliary component includes an auxiliary member, which is slidably connected to the inner wall of the moving part. A limiting member is slidably connected to the inner wall of the auxiliary member. Multiple sets of limiting members are provided. A spring is provided on the opposite side of two adjacent sets of limiting members. Multiple sets of insertion holes are opened through the left and right sides of the moving part. The limiting member is inserted into the inner wall of the insertion hole.
[0010] As a further description of the above technical solution:
[0011] The limiting component is configured in an L-shape.
[0012] As a further description of the above technical solution:
[0013] The clamping components are provided in multiple sets, and adjacent sets of clamping components are arranged opposite each other.
[0014] As a further description of the above technical solution:
[0015] The auxiliary components are provided in multiple sets, and the opposite side of two adjacent sets of auxiliary components is set as a rod shape.
[0016] As a further description of the above technical solution:
[0017] Linear bearings are provided at the connection between the support rod and the moving part, and at the connection between the support part and the guide plate a and guide plate b.
[0018] As a further description of the above technical solution:
[0019] The upper right side of the base is equipped with a control switch for controlling hydraulic cylinders a and b.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, hydraulic cylinders a and b drive guide plate a and guide plate b to slide. Since the guide grooves on the guide plates are inclined and opposite in direction, the connecting parts drive the moving parts to slide on the support rod, thereby realizing the clamping and releasing action of the workpiece. It can adapt to different specifications of dual-outlet mufflers and improve the versatility of the tooling.
[0022] 2. In this utility model, by setting the auxiliary component in an L shape and inserting it into the insertion holes on the left and right sides of the moving component, the auxiliary component can be inserted into different insertion holes according to the shape and size of the dual-outlet muffler, and its position can be flexibly adjusted to adapt to the placement requirements of workpieces of different specifications, thereby improving the adaptability of the tooling to different workpieces. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;
[0024] Figure 2 This is a bottom-view three-dimensional structural diagram of the overall device in this utility model;
[0025] Figure 3 This is a three-dimensional structural diagram of the disassembled auxiliary components in this utility model.
[0026] Legend:
[0027] 1. Base; 2. Placement rack; 3. Clamping assembly; 31. Support frame; 32. Support rod; 33. Moving part; 34. Connecting part; 35. Guide plate a; 36. Supporting part; 37. Hydraulic cylinder a; 38. Guide plate b; 39. Hydraulic cylinder b; 4. Auxiliary assembly; 41. Auxiliary part; 42. Limiting part; 43. Spring; 44. Insertion hole. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Reference Figures 1-3 This utility model provides an embodiment of an automatic dual-head spot welding fixture for a dual-outlet muffler, comprising a base 1, which serves as the basic support structure for the fixture, providing a stable installation platform for the entire device and bearing the weight and force of all components and workpieces during the operation of the fixture. Placement racks 2 are fixedly connected to the left and right sides of the upper part of the base 1 for temporary support of the dual-outlet muffler. When the workpiece is not clamped by the clamping assembly 3, the support of the placement racks 2 on both sides maintains the workpiece's balance. A clamping assembly 3 is provided in the middle of the base 1, including a support frame 31 fixedly connected to the middle of the base 1, providing an installation base for the support rod 32 and the moving part 33, ensuring the overall structural stability of the clamping assembly 3. A support rod is fixedly connected to the outside of the support frame 31. 32 provides a guide rail for the moving part 33 to slide back and forth, ensuring the accuracy of the clamping action. The moving part 33 is slidably connected to the outside of the support rod 32. The moving part 33 clamps and releases the workpiece by moving back and forth. When it cooperates with the connecting part 34, under the action of the guide groove of the guide plate a35, the moving part 33 moves inward to clamp the workpiece and moves outward to release the workpiece. The lower part of the moving part 33 is fixedly connected to the connecting part 34, which converts the left and right sliding of the guide plate a35 into the back and forth sliding of the moving part 33, realizing the mechanical transmission conversion from the hydraulic cylinder a37 driving to the clamping action. The lower part of the base 1 is fixedly connected to the support part 36, which provides support and guidance for the left and right sliding of the guide plate a35 and the guide plate b38, and restricts the movement trajectory of the guide plate.
[0030] Reference Figures 1-3 The support member 36 is slidably connected to guide plate a35 and guide plate b38. A hydraulic cylinder a37 is fixedly connected to the left side of guide plate a35, and a hydraulic cylinder b39 is fixedly connected to the right side of guide plate b38. Both hydraulic cylinders a37 and b39 are fixedly connected to the lower surface of the base 1. The guide plates a35 and b38 are driven to slide left and right on the support member 36 through the telescopic movement, providing a power source for the clamping assembly 3. Guide grooves are opened through the outer sides of guide plate b38 and guide plate a35. The lower part of the connector 34 slides on the inner wall of the guide groove. Guide plate a35 and guide plate b38 are arranged opposite to each other. The guide grooves on guide plate a35 and guide plate b38 are inclined and in opposite directions, so that multiple sets of moving parts 33 move synchronously inward or outward under the drive of hydraulic cylinders a37 and b39, realizing symmetrical clamping or releasing of the workpiece and ensuring uniform distribution of clamping force.
[0031] Reference Figure 1 and Figure 3 An auxiliary component 4 is slidably connected to the inner wall of the moving part 33. The auxiliary component 4 includes an auxiliary component 41, which is slidably connected to the inner wall of the moving part 33. Multiple sets of auxiliary components 41 are provided. The opposite side of two adjacent sets of auxiliary components 41 is set as a rod, which is used to position the dual-outlet muffler in the horizontal direction. Limiting components 42 are slidably connected to the inner wall of the auxiliary component 41. Multiple sets of limiting components 42 are provided. The limiting components 42 are set as L-shaped and are inserted into the insertion holes 44 on the left and right sides of the moving part 33. The insertion can be adjusted according to the shape and size of the workpiece. The insertion hole 44 position enables adaptive positioning for dual-outlet mufflers of different specifications. A spring 43 is provided on the opposite side of two adjacent sets of limiting members 42 to provide reset power for the limiting members 42. When the workpiece is released, the spring 43 pushes the limiting member 42 to reset. Multiple sets of insertion holes 44 are opened through the left and right sides of the moving member 33. The limiting member 42 is inserted into the inner wall of the insertion hole 44. The position of the auxiliary member 41 can be changed by inserting the limiting member 42 into different insertion holes 44, so as to achieve adaptive adjustment for workpieces of different widths or shapes and improve the versatility of the tooling.
[0032] Reference Figures 1-3 Multiple clamping assemblies 3 are provided, with adjacent sets of clamping assemblies 3 arranged opposite each other. Linear bearings are provided at the connection between the support rod 32 and the moving part 33, and at the connection between the support part 36 and the guide plate a35 and guide plate b38, to reduce frictional resistance when the components slide, making the movement of the moving part 33 and the guide plate smoother. A control switch for controlling hydraulic cylinders a37 and b39 is provided on the upper right side of the base 1, used to control the start, stop and extension / retraction of hydraulic cylinders a37 and b39. The operator can manually control the clamping assembly 3 through the control switch.
[0033] Working principle: During use, the operator places the dual-outlet muffler on the placement racks 2 on the left and right sides of the base 1. The horizontal support surface of the placement rack 2 is used to initially position the workpiece, ensuring that the workpiece axis is aligned with the center axis of the tooling. According to the specifications of the muffler, the position of the auxiliary component 41 is adjusted by moving the auxiliary component 41 in the insertion hole 44 of the moving component 33, so that the opposite rod-shaped parts of the adjacent auxiliary components 41 form a support area that matches the shape of the muffler.
[0034] The operator activates hydraulic cylinders a37 and b39 via the control switch on the right side of base 1. Hydraulic cylinder a37 extends to the left, pushing guide plate a35 to the right on support 36, while hydraulic cylinder b39 extends to the right, pushing guide plate b38 to the right.
[0035] The inclined guide grooves on the outer sides of guide plate a35 and guide plate b38 have opposite inclination directions. When the guide plates move horizontally, they cause the connecting member 34 to slide within the groove. Due to the inclination angle of the guide groove, the horizontal displacement of the connecting member 34 is converted into a vertical component force, which in turn pushes the moving member 33 to slide upward along the support rod 32.
[0036] Because the clamping components 3 are arranged in multiple sets and relatively distributed, the moving parts 33 on the left and right sides move inward synchronously under the drive of the guide plate, forming a symmetrical clamping of the muffler. The inner pressure of the moving parts 33 is transmitted to the workpiece surface through the auxiliary components 4 to achieve stable clamping.
[0037] After the workpiece is clamped, the two welding heads of the external spot welding equipment simultaneously perform spot welding on the two welding points of the muffler. After welding is completed, the control switch starts the hydraulic cylinder to extend and retract in the reverse direction, causing the moving part 33 to slide along the support rod 32. The auxiliary component 4 releases its clamp on the workpiece along with the moving part 33, and the operator can then remove the welded muffler.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic double-head spot welding fixture for a dual-outlet muffler, comprising a base (1), characterized in that: The base (1) has a fixed mounting bracket (2) on both the left and right sides of the upper part, and a clamping component (3) is provided in the middle of the base (1). The clamping assembly (3) includes a support frame (31) fixedly connected to the middle of the base (1). A support rod (32) is fixedly connected to the outside of the support frame (31). A moving part (33) is slidably connected to the outside of the support rod (32). A connecting part (34) is fixedly connected to the lower part of the moving part (33). A support member (36) is fixedly connected to the lower part of the base (1). A guide plate a (35) and a guide plate b (38) are slidably connected to the outside of the support member (36). A hydraulic cylinder a (37) is fixedly connected to the left side of the guide plate a (35). A hydraulic cylinder b (39) is fixedly connected to the right side of the guide plate b (38). Both the hydraulic cylinder a (37) and the hydraulic cylinder b (39) are fixedly connected to the lower surface of the base (1). A guide groove is provided through the outside of the guide plate b (38) and the guide plate a (35). The lower part of the connecting part (34) slides on the inner wall of the guide groove.
2. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 1, characterized in that: The guide plate a (35) and the guide plate b (38) are arranged opposite to each other, and the guide grooves on the guide plate a (35) and the guide plate b (38) are inclined and in opposite directions.
3. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 1, characterized in that: The inner wall of the movable part (33) is slidably connected to an auxiliary component (4). The auxiliary component (4) includes an auxiliary component (41). The auxiliary component (41) is slidably connected to the inner wall of the movable part (33). The inner wall of the auxiliary component (41) is slidably connected to a limiting component (42). Multiple sets of limiting components (42) are provided. A spring (43) is provided on the opposite side of two adjacent sets of limiting components (42). Multiple sets of insertion holes (44) are opened through the left and right sides of the movable part (33). The limiting component (42) is inserted into the inner wall of the insertion hole (44).
4. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 3, characterized in that: The limiting member (42) is configured in an L shape.
5. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 1, characterized in that: The clamping components (3) are provided in multiple sets, and the two adjacent sets of clamping components (3) are arranged opposite to each other.
6. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 3, characterized in that: The auxiliary component (4) is provided in multiple sets, and the opposite side of the auxiliary component (41) of two adjacent sets is set as a rod.
7. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 1, characterized in that: Linear bearings are provided at the connection between the support rod (32) and the moving part (33) and at the connection between the support part (36) and the guide plate a (35) and the guide plate b (38).
8. The automatic double-head spot welding fixture for a dual-outlet muffler according to claim 1, characterized in that: The upper right side of the base (1) is provided with a control switch for controlling hydraulic cylinder a (37) and hydraulic cylinder b (39).