A welding fixture for a car muffler

Abstract

The utility model discloses a kind of welding fixture for automobile muffler, it includes base, main positioning support mechanism, adjustable lateral clamping mechanism and end clamping mechanism.Main positioning support mechanism is supported muffler main body by V-shaped support block.Adjustable lateral clamping mechanism is driven lateral compression assembly by slider movable along transverse guide rail, realize the lateral compression of different specifications muffler.End clamping mechanism is driven end clamping assembly by rotatable angle adjusting disc, adapt to the pipe orifice clamping of different angle.The utility model is through adjustable design in multiple places, significantly improve the versatility of fixture, can quickly adapt to the welding demand of different model muffler, while ensuring positioning accuracy and clamping reliability, its structure design also effectively avoids welding area, improves welding efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to a welding fixture for automotive mufflers. Background Technology

[0002] Currently, in existing technologies, the automotive muffler is an important component of the vehicle's exhaust system. Its structure typically includes components such as a shell, inner liner, intake pipe, exhaust pipe, and internal baffles. These components are mostly made of thin metal sheets and require assembly through welding. Due to the complex structure and irregular shape of the muffler, how to stably and reliably fix the various components and ensure the relative positional accuracy between them during the welding process, especially when welding at multiple positions and angles, is a key issue affecting welding quality and production efficiency.

[0003] However, existing silencer welding fixtures have some shortcomings: First, they lack versatility. Usually, one type of fixture is only suitable for a specific model of silencer. When the product model changes, the entire fixture needs to be replaced or adjusted, which is costly and inefficient. Second, the clamping method may not be flexible enough. For pipe fittings or irregularly shaped parts with complex spatial angles, it is difficult to achieve fast and accurate positioning and clamping. Third, during the welding process, the fixture itself may obstruct certain areas to be welded, making it impossible for the welding torch to reach them. This requires repeated clamping, which affects the continuity and efficiency of the welding operation.

[0004] Therefore, there is an urgent need for a special welding fixture that can adapt to different models of mufflers, has precise positioning, reliable clamping, and is easy to use for welding operations. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a welding fixture for automotive mufflers. Through multiple adjustable designs, it significantly improves the versatility of the fixture, can quickly adapt to the welding requirements of different models of mufflers, and at the same time ensures positioning accuracy and clamping reliability. Its structural design also effectively avoids the welding area, improving welding efficiency and quality.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A welding fixture for an automotive muffler includes a base, a main positioning support mechanism disposed on the base, at least one adjustable lateral clamping mechanism, and at least one end clamping mechanism. The adjustable lateral clamping mechanism includes a transverse guide rail mounted on the base, a slider mounted on the transverse guide rail, a support arm connected to the slider, and a lateral clamping assembly mounted on the top of the support arm. The lateral clamping assembly includes a pressure arm that is oscillatingly connected to the support arm and a first drive device for driving the pressure arm to move, wherein the end of the pressure arm is provided with a pressure head; The end clamping mechanism includes a mounting base fixed to the end of the base, an angle adjustment plate disposed on the mounting base, and an end clamping assembly mounted on the angle adjustment plate; the angle adjustment plate can rotate relative to the mounting base and lock at different angles.

[0007] Furthermore, the main positioning support mechanism includes a support column fixed on the base and a V-shaped support block disposed at the top of the support column.

[0008] Furthermore, the slider can be fixed at any position on the transverse guide rail by a locking device.

[0009] Furthermore, the end clamping assembly includes a clamping arm and a second driving device, and the end of the clamping arm is provided with a contoured gripper for clamping the muffler nozzle.

[0010] Furthermore, the angle adjustment disc is locked to the mounting base by a positioning pin.

[0011] Furthermore, both the first drive device and the second drive device are cylinders.

[0012] Furthermore, the V-groove surface of the V-shaped support block is provided with an anti-slip pad.

[0013] Furthermore, the pressure head is a rotatable roller structure.

[0014] Furthermore, a scale is provided on the transverse guide rail.

[0015] Furthermore, the base is provided with shock-absorbing feet at its bottom.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects: 1. This utility model, by setting an adjustable lateral clamping mechanism that can move along the transverse guide rail and an end clamping mechanism with an adjustable angle, enables the fixture to adapt to silencer models with different lengths and different pipe opening angles, greatly improving the versatility of the fixture and reducing the time and cost of tooling replacement due to product model changes.

[0017] 2. This utility model offers precise positioning and reliable clamping. The V-shaped block of the main positioning support mechanism effectively positions cylindrical or near-cylindrical outer shells or inner liner. The lateral and end clamping mechanisms apply clamping forces from different directions, forming a stable spatial constraint that ensures the workpiece will not move or deform during welding, thus guaranteeing welding accuracy.

[0018] 3. This utility model facilitates welding operations. The fixture structure is compact, and the positions of each clamping point are optimized to effectively avoid the main welding seam area, providing ample operating space for the welding torch, reducing welding blind spots, and helping to achieve continuous and efficient welding operations.

[0019] 4. This utility model is easy to operate and highly efficient. It uses a cylinder as a driving device to automate clamping and releasing, reducing the labor intensity of operators and improving clamping efficiency.

[0020] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure on another side of an embodiment of the present utility model; Figure 3 This is an enlarged structural schematic diagram of the main positioning support mechanism in an embodiment of this utility model; Figure 4 This is an enlarged schematic diagram of the adjustable lateral clamping mechanism according to an embodiment of the present invention; Figure 5 This is an enlarged schematic diagram of the end clamping mechanism in an embodiment of the present invention; Figure 6 This is an enlarged schematic diagram of the angle adjustment disc in an embodiment of the present invention; The components include: 1. Base; 2. Main positioning support mechanism; 21. Support column; 22. V-shaped support block; 23. Anti-slip pad; 3. Adjustable lateral clamping mechanism; 31. Transverse guide rail; 32. Slider; 33. Support arm; 34. Pressure arm; 35. First drive device; 36. Pressure head; 37. Locking component; 38. Scale; 4. End clamping mechanism; 41. Mounting base; 42. Angle adjustment disc; 43. Clamping arm; 44. Second drive device; 45. Contouring gripper; 46. Positioning pin; 5. Shock-absorbing support foot. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0024] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] like Figure 1-6 As shown in Embodiment 1, a welding fixture for an automobile muffler is provided, which mainly consists of a base 1, a main positioning support mechanism 2 disposed on the base 1, two adjustable lateral clamping mechanisms 3 and an end clamping mechanism 4.

[0029] The adjustable lateral clamping mechanism 3 specifically includes a transverse guide rail 31 mounted on the base 1, a slider 32 mounted on the transverse guide rail 31, a support arm 33 connected to the slider 32, and a lateral clamping assembly located at the top of the support arm 33. The slider 32 can be fixed to any position on the transverse guide rail 31 by a locking member 37. The lateral clamping assembly specifically includes a pressure arm 34 rotatably hinged to the top of the support arm 33 and a first drive device 35 fixedly mounted on the support arm 33. The upper end of the first drive device 35 is hinged to the middle of the pressure arm 34 and is used to drive the pressure arm 34 to swing. A pressure head 36 is provided at the end of the pressure arm 34.

[0030] The end clamping mechanism 4 specifically includes a mounting base 41 fixed to the end of the base 1, an angle adjusting plate 42 disposed on the mounting base 41, and an end clamping assembly mounted on the angle adjusting plate 42. The angle adjusting plate 42 can rotate relative to the mounting base 41 and lock at different angles. Specifically, the angle adjusting plate 42 is locked to the mounting base 41 by a positioning pin 46. The end clamping assembly specifically includes a clamping arm 43 and a second driving device 44. The second driving device 44 is fixed to the side of the angle adjusting plate 42, and the clamping arm 43 is mounted on the output end of the second driving device 44. The end of the clamping arm 43 is also provided with a contoured gripper 45 for clamping the muffler nozzle.

[0031] The main positioning support mechanism 2 specifically includes a support column 21 fixed on the base 1 and a V-shaped support block 22 set at the top of the support column 21.

[0032] refer to Figure 1-6 As shown in Embodiment 2, a welding fixture for automotive mufflers is provided, which mainly consists of a base 1, a main positioning support mechanism 2, two adjustable lateral clamping mechanisms 3, and an end clamping mechanism 4. The base 1 is a rigid platform made of rectangular steel plate, with shock-absorbing feet 5 installed at the four corners of the bottom to reduce vibration during equipment operation.

[0033] There are two sets of main positioning support mechanisms 2, which are spaced apart along the length of the base 1. Each set includes a support column 21 that is vertically fixed to the base 1, and a V-shaped support block 22 is bolted to the top of the column. The V-shaped groove surface of the V-shaped support block 22 is covered with a rubber anti-slip pad 23 to increase friction and protect the workpiece surface.

[0034] Adjustable lateral clamping mechanisms 3 are symmetrically distributed on both sides of the base 1. Each side has a transverse guide rail 31 fixed to the base 1, and the guide rail is marked with a scale 38. A slider 32 is fitted onto the transverse guide rail 31 and can slide along the guide rail. A support arm 33 is vertically fixed to the slider 32 by bolts. A pressure arm 34 is hinged to the top of the support arm 33 via a hinge shaft. The pressure arm 34 is driven by a first drive device 35 mounted on the support arm 33 to swing around the hinge shaft. The first drive device 35 is a cylinder. A freely rotating roller is installed at the free end of the pressure arm 34 as a pressure head 36. By loosening the locking piece 37, i.e., the locking screw, the position of the slider 32 on the transverse guide rail 31 can be adjusted according to the diameter of the muffler workpiece, thereby changing the clamping point of the pressure head 36. After adjustment, tightening the locking piece 37 will fix it.

[0035] An end clamping mechanism 4 is located at one end of the base 1. It includes a mounting base 41 fixed to the base 1. An angle adjusting disc 42 is mounted on the mounting base 41 via bearings. An end clamping assembly is mounted on the side wall of the angle adjusting disc 42. This assembly includes a clamping arm 43 and a second drive device 44, which is also a cylinder, to drive the clamping arm 43. The end of the clamping arm 43 is fitted with a contoured gripper 45 that matches the shape of the muffler's inlet or outlet pipe. Multiple positioning holes are formed on the circumference of the angle adjusting disc 42. By inserting positioning pins 46 into the corresponding holes on the mounting base 41, the angle adjusting disc 42 can be locked at the desired angle, thereby adapting to the clamping requirements of pipe openings with different inclination angles.

[0036] During operation, firstly, adjust the positions of the sliders 32 of the two adjustable lateral clamping mechanisms 3 according to the model and size of the muffler workpiece to be welded, and adjust the angle adjustment disc 42 of the end clamping mechanism 4 to a suitable angle and lock it. Then, hoist or place the muffler housing or assembly onto the two V-shaped support blocks 22 to complete the initial positioning. Next, start the first drive device 35 and the second drive device 44. The lateral pressure arm 34 swings downward under the drive of the cylinder, pressing the side of the workpiece with the roller 36; the end clamping arm 43 moves under the drive of the cylinder, using the contour gripper 45 to clamp the pipe opening of the muffler. After the workpiece is completely and reliably fixed, the welding operation can be carried out. After welding is completed, the cylinder resets, the workpiece is released, and it can be removed.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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.

[0038] The above specific embodiments further illustrate the technical problems solved by this utility model, the technical solutions, and the beneficial effects. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding fixture for automotive mufflers, characterized in that: It includes a base (1), a main positioning support mechanism (2) disposed on the base (1), at least one adjustable lateral clamping mechanism (3) and at least one end clamping mechanism (4). The adjustable lateral clamping mechanism (3) includes a transverse guide rail (31) on the base (1), a slider (32) mounted on the transverse guide rail (31), a support arm (33) connected to the slider (32), and a lateral clamping assembly on the top of the support arm (33). The lateral clamping assembly includes a pressure arm (34) swayably connected to the support arm (33) and a first drive device (35) for driving the pressure arm (34) to move. The end of the pressure arm (34) is provided with a pressure head (36). The end clamping mechanism (4) includes a mounting base (41) fixed to the end of the base (1), an angle adjustment disk (42) disposed on the mounting base (41), and an end clamping assembly mounted on the angle adjustment disk (42); the angle adjustment disk (42) can rotate relative to the mounting base (41) and lock at different angles.

2. The welding fixture for an automobile muffler according to claim 1, characterized in that: The main positioning support mechanism (2) includes a support column (21) fixed on the base (1) and a V-shaped support block (22) set at the top of the support column (21).

3. The welding fixture for an automobile muffler according to claim 1, characterized in that: The slider (32) can be fixed at any position on the transverse guide rail (31) by means of the locking member (37).

4. A welding fixture for an automotive muffler according to claim 1, characterized in that: The end clamping assembly includes a clamping arm (43) and a second drive device (44), and the end of the clamping arm (43) is provided with a contoured gripper (45) for clamping the muffler port.

5. A welding fixture for an automotive muffler according to claim 1, characterized in that: The angle adjustment disc (42) is locked to the mounting base (41) by a positioning pin (46).

6. A welding fixture for an automotive muffler according to claim 4, characterized in that: Both the first drive device (35) and the second drive device (44) are cylinders.

7. A welding fixture for an automotive muffler according to claim 2, characterized in that: The surface of the V-shaped groove of the V-shaped support block (22) is provided with an anti-slip pad (23).

8. A welding fixture for an automotive muffler according to claim 1, characterized in that: The pressure head (36) is a rotatable roller structure.

9. A welding fixture for an automobile muffler according to claim 1, characterized in that: A scale (38) is provided on the transverse guide rail (31).

10. A welding fixture for an automotive muffler according to claim 1, characterized in that: The base (1) is provided with shock-absorbing feet (5) at its bottom.

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