Auxiliary fixing device for welding automobile silencer

Abstract

The utility model relates to the technical field of automobile silencer manufacturing, and discloses an auxiliary fixing device for welding of an automobile silencer, which comprises a base, a positioning table is fixedly mounted at the top of the base, a clamping mechanism is arranged above the base, a positioning mechanism is arranged in the positioning table, the clamping mechanism comprises a pressing rod, and the pressing rod is fixedly mounted on the base. Connecting rods are fixedly installed at the two ends of the pressing rod, the ends, away from the pressing rod, of the connecting rods are hinged to the top of the base, a hollow rod is fixedly installed at the end, close to the base, of the connecting rod at the left end of the pressing rod, and a hydraulic cylinder is fixedly installed on the left side of the base. According to the silencer welding device, the V-shaped structure of the positioning table is matched with the two sets of freely-moving pressing rods so that silencers of different models and sizes can be fixed, the silencers can be fixed more easily and conveniently, welding operation of the silencers is facilitated, and the overall practicability and flexibility of the device are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive muffler manufacturing technology, and in particular to an auxiliary fixing device for welding automotive mufflers. Background Technology

[0002] The automotive muffler is an important component of the exhaust system, primarily used to reduce engine exhaust noise and decrease harmful gas emissions. Its internal structure typically employs porous tubes, baffles, and sound-absorbing materials to achieve noise reduction through sound wave reflection, interference, and absorption.

[0003] Welding is one of the key processes in the manufacturing of mufflers, used to connect the shell, pipes and internal components. Because the muffler has a complex structure and the welding accuracy directly affects the sealing and durability, it is usually necessary to use positioning fixtures for auxiliary fixation to ensure that the relative positions of each component are accurate, the welds are aligned and welding deformation is reduced.

[0004] The mufflers of different car models often vary greatly in shape, size and structure. However, the current positioning tooling is mostly a special fixture, which is usually only suitable for a single model and cannot be flexibly adjusted to adapt to different specifications of mufflers. This limitation leads to the production line having to change tooling frequently, which increases the tooling manufacturing cost and time consumption, and also limits the flexibility of small-batch, multi-variety production. To solve the above problems, an auxiliary fixing device for welding automotive mufflers is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an auxiliary fixing device for welding automotive mufflers, which aims to improve the problem mentioned in the prior art that "the current positioning fixtures for muffler welding have poor flexibility and are usually only suitable for a single model".

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary fixing device for welding automobile mufflers, comprising a base, a positioning platform fixedly installed on the top of the base, a clamping mechanism provided above the base, and a positioning mechanism provided inside the positioning platform;

[0007] The clamping mechanism includes a pressure rod, with connecting rods fixedly installed at both ends of the pressure rod. The end of the connecting rod away from the pressure rod is hinged to the top of the base. A hollow rod is fixedly installed at the end of the connecting rod on the left side of the pressure rod and near the base. A hydraulic cylinder is fixedly installed on the left side of the base. A horizontal plate is fixedly installed at the piston end of the hydraulic cylinder. A push rod is fixedly installed at the end of the horizontal plate near the positioning table.

[0008] As a further description of the above technical solution:

[0009] The positioning mechanism includes a slide rod, which is slidably connected to the inner wall of the positioning platform. A positioning rod is slidably connected through the inner wall of the slide rod. A suction cup is fixedly installed at one end of the positioning rod, and a limit block is fixedly installed at the other end of the positioning rod. A spring is sleeved on the outer wall of the positioning rod.

[0010] As a further description of the above technical solution:

[0011] A swing arm is hinged to the left side of the positioning platform. A connecting rod is hinged to the end of the swing arm away from the connecting rod. The end of the connecting rod away from the swing arm is hinged to the left side of the slide rod.

[0012] As a further description of the above technical solution:

[0013] The swing arm has a through groove.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the push rod is attached to the inner wall of the through groove.

[0016] As a further description of the above technical solution:

[0017] The clamping mechanism also includes a rubber sleeve, which is fixedly installed on the outer wall of the pressure rod.

[0018] As a further description of the above technical solution:

[0019] The end of the push rod away from the cross plate is attached to the inner wall of the hollow rod.

[0020] As a further description of the above technical solution:

[0021] One end of the spring is fixedly installed on the top of the limiting block, and the other end of the spring is fixedly installed on the bottom of the slide rod.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the "V"-shaped structure of the positioning platform, together with two sets of freely movable pressure rods, can fix mufflers of different models and sizes, making the fixing of mufflers simpler and more convenient, which is beneficial to the welding operation of mufflers and greatly improves the overall practicality and flexibility of the device.

[0024] 2. In this utility model, the positioning mechanism can axially limit the muffler while it is being fixed, preventing axial displacement of the muffler during welding. This further improves the fixing effect of the muffler and allows it to maintain a stable state during welding. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a partial cross-sectional structural diagram of the base of this utility model;

[0027] Figure 3 This utility model Figure 1 A magnified structural diagram at point A;

[0028] Figure 4 This utility model Figure 2 A magnified structural diagram at point B.

[0029] Legend:

[0030] 1. Base; 2. Positioning platform; 3. Clamping mechanism; 31. Pressure rod; 32. Connecting rod; 33. Hollow rod; 34. Hydraulic cylinder; 35. Horizontal plate; 36. Push rod; 37. Rubber sleeve; 4. Positioning mechanism; 41. Slide rod; 42. Positioning rod; 43. Suction cup; 44. Limiting block; 45. Spring; 46. Swing rod; 47. Connecting rod; 48. Through groove. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 One embodiment of this utility model is an auxiliary fixing device for welding automobile mufflers, including a base 1, a positioning platform 2 fixedly installed on the top of the base 1, a clamping mechanism 3 provided above the base 1, and a positioning mechanism 4 provided inside the positioning platform 2.

[0033] Reference Figures 1-3The clamping mechanism 3 includes a pressure rod 31, with connecting rods 32 fixedly installed at both ends of the pressure rod 31. The connecting rods 32 support the pressure rod 31. A rubber sleeve 37 is fixedly installed on the outer wall of the pressure rod 31. The rubber sleeve 37 not only increases the friction between the pressure rod 31 and the muffler, thereby improving the fixing effect of the pressure rod 31, but also prevents the pressure rod 31 from damaging the muffler. The end of the connecting rod 32 away from the pressure rod 31 is hinged to the top of the base 1. The end of the connecting rod 32 on the left side of the pressure rod 31, closer to the base 1, is fixed. A hollow rod 33 is installed. Pushing the hollow rod 33 with a push rod 36 can drive the connecting rod 32 to rotate. A hydraulic cylinder 34 is fixedly installed on the left side of the base 1. A horizontal plate 35 is fixedly installed on the piston end of the hydraulic cylinder 34. By starting the hydraulic cylinder 34, the horizontal plate 35 can be moved up and down. A push rod 36 is fixedly installed on the end of the horizontal plate 35 near the positioning table 2. The end of the push rod 36 away from the horizontal plate 35 is attached to the inner wall of the hollow rod 33. When the horizontal plate 35 moves, it can drive the connecting rod 32 to rotate on the top of the base 1 in conjunction with the push rod 36 and the hollow rod 33.

[0034] Reference Figure 4 The positioning mechanism 4 includes a slide rod 41, which is slidably connected to the inner wall of the positioning platform 2. By setting the slide rod 41, the positioning rod 42 can be moved inside the positioning platform 2. The inner wall of the slide rod 41 is slidably connected to the positioning rod 42. A suction cup 43 is fixedly installed at one end of the positioning rod 42. By moving the positioning rod 42 upward, the suction cup 43 can be attracted to the outer wall of the muffler. The suction effect of the suction cup 43 can axially limit the muffler. A limit block 44 is fixedly installed at the other end of the positioning rod 42. A spring 45 is sleeved on the outer wall of the positioning rod 42. One end of the spring 45 is fixedly installed on the top of the limit block 44, and the other end of the spring 45 is fixedly installed on the bottom of the slide rod 41. The elasticity of the spring 45, in conjunction with the limit block 44, can make the positioning rod 42 drive the suction cup 43 to stick tightly to the outer wall of the muffler.

[0035] Reference Figures 1-3 A swing rod 46 is hinged to the left side of the positioning platform 2. A connecting rod 47 is hinged to the end of the swing rod 46 away from the connecting rod 32. The end of the connecting rod 47 away from the swing rod 46 is hinged to the left side of the slide rod 41. When the swing rod 46 rotates, it can push the connecting rod 47 upward, so that the connecting rod 47 pushes the slide rod 41 upward. At this time, the slide rod 41 will slide upward on the inner wall of the positioning platform 2. A through groove 48 is provided on the swing rod 46. The outer wall of the push rod 36 fits against the inner wall of the through groove 48. When the horizontal plate 35 moves downward, it can push the swing rod 46 downward in conjunction with the push rod 36 and the through groove 48, so that the swing rod 46 rotates on the left side of the positioning platform 2.

[0036] Working principle: In use, the muffler is placed on the positioning platform 2. Then, the hydraulic cylinder 34 is activated to move the horizontal plate 35 downward. As the horizontal plate 35 moves downward, it also moves the push rod 36 against the inner wall of the hollow rod 33. At the same time, the push rod 36 pushes the hollow rod 33 downward, causing the hollow rod 33 to drive the connecting rod 32 to rotate on the top of the base 1. At this time, the connecting rod 32 will drive the pressure rod 31 to gradually approach the positioning platform 2 until the pressure rod 31 presses the muffler tightly inside the positioning platform 2. At this time, the "V"-shaped positioning platform 2, together with the compression of the two sets of pressure rods 31, can fix the muffler inside the positioning platform 2. Furthermore, due to the special shape of the positioning platform 2 and the two sets of freely swinging pressure rods 31, mufflers of different models and sizes can be fixed.

[0037] As the horizontal plate 35 moves downward, it causes the push rod 36 to move against the inner wall of the through groove 48. At the same time, the push rod 36 pushes the swing rod 46 downward, causing the swing rod 46 to rotate on the left side of the positioning platform 2. As the swing rod 46 rotates, it pushes the connecting rod 47 upward, causing the connecting rod 47 to push the slide rod 41 upward. At this time, the slide rod 41 slides upward on the inner wall of the positioning platform 2. As the slide rod 41 slides upward, it causes the spring 45 to move upward synchronously. At this time, the spring 45 causes the limiting block 44 to move upward synchronously, so that the limiting block 44 can drive the positioning rod 42 to move upward synchronously. The upward movement of the positioning rod 42 can cause the suction cup 43 to adhere to the outer wall of the muffler. The adsorption effect of the suction cup 43 can axially limit the muffler, thereby further improving the fixing effect of the 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 auxiliary fixing device for welding automotive mufflers, comprising a base (1), characterized in that: A positioning platform (2) is fixedly installed on the top of the base (1), a clamping mechanism (3) is provided above the base (1), and a positioning mechanism (4) is provided inside the positioning platform (2). The clamping mechanism (3) includes a pressure rod (31), both ends of which are fixedly mounted with connecting rods (32). The end of the connecting rod (32) away from the pressure rod (31) is hinged to the top of the base (1). A hollow rod (33) is fixedly mounted on the end of the connecting rod (32) on the left side of the pressure rod (31) and near the base (1). A hydraulic cylinder (34) is fixedly mounted on the left side of the base (1). A horizontal plate (35) is fixedly mounted on the piston end of the hydraulic cylinder (34). A push rod (36) is fixedly mounted on the end of the horizontal plate (35) near the positioning table (2).

2. The auxiliary fixing device for welding automotive mufflers according to claim 1, characterized in that: The positioning mechanism (4) includes a slide rod (41), which is slidably connected to the inner wall of the positioning platform (2). A positioning rod (42) is slidably connected through the inner wall of the slide rod (41). A suction cup (43) is fixedly installed at one end of the positioning rod (42), and a limit block (44) is fixedly installed at the other end of the positioning rod (42). A spring (45) is sleeved on the outer wall of the positioning rod (42).

3. The auxiliary fixing device for welding automotive mufflers according to claim 1, characterized in that: A swing arm (46) is hinged to the left side of the positioning platform (2). A connecting rod (47) is hinged to the end of the swing arm (46) away from the connecting rod (32). The end of the connecting rod (47) away from the swing arm (46) is hinged to the left side of the slide rod (41).

4. The auxiliary fixing device for welding an automobile muffler according to claim 3, characterized in that: The swing arm (46) has a through groove (48).

5. The auxiliary fixing device for welding automotive mufflers according to claim 1, characterized in that: The outer wall of the push rod (36) is attached to the inner wall of the through groove (48).

6. The auxiliary fixing device for welding an automobile muffler according to claim 1, characterized in that: The clamping mechanism (3) also includes a rubber sleeve (37), which is fixedly installed on the outer wall of the pressure rod (31).

7. The auxiliary fixing device for welding an automobile muffler according to claim 1, characterized in that: The end of the push rod (36) away from the cross plate (35) is attached to the inner wall of the hollow rod (33).

8. The auxiliary fixing device for welding an automobile muffler according to claim 2, characterized in that: One end of the spring (45) is fixedly installed on the top of the limiting block (44), and the other end of the spring (45) is fixedly installed on the bottom of the slide rod (41).

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