A quick positioning and welding fixture for automobile exhaust system components

Abstract

The utility model discloses a kind of automobile exhaust system component quick positioning welding fixture, it is related to welding fixture technical field, including support seat, the middle part of support seat is slidably inserted with positioning rod, the utility model is set up support seat and positioning rod, support seat outside is equipped with multiple support arms and movable arm, movable arm top end is equipped with guide wheel, automobile exhaust pipe can be inserted between multiple guide wheels, multiple guide wheels cooperate, while realizing the preliminary clamping of exhaust pipe, the automatic centering of exhaust pipe is completed, after exhaust pipe is placed, flange can be sleeved in the top end of positioning rod, at this time, flange and exhaust pipe complete centering alignment, the clamping positioning between positioning rod and flange can be realized by multiple pressing blocks in the top end of positioning rod outside, by adjusting the position of positioning rod downwards, flange can be pressed tightly in exhaust pipe top end, so that the positioning between exhaust pipe and flange is completed while realizing the quick clamping of exhaust pipe.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a quick positioning welding fixture for automotive exhaust system components. Background Technology

[0002] The automotive exhaust bellows, also known as the automotive exhaust hose, is installed in the exhaust pipe between the engine exhaust manifold and the muffler, making the entire exhaust system flexibly connected. This serves to reduce vibration and noise, facilitate installation, and extend the life of the exhaust muffler system.

[0003] In existing technology, during the production of automotive exhaust bellows, a flange interface for connecting the exhaust pipe to the automotive pipeline needs to be welded to the end of the exhaust pipe. During the welding process between the automotive exhaust pipe and the flange, a fixture is usually used to position and clamp the exhaust pipe. For example, a positioning fixture for welding automotive exhaust pipes, as disclosed in CN222588591U, includes a base with two mounting seats on its upper surface. Each mounting seat has an arc-shaped groove on its upper surface, and a mounting ring is rotatably connected to the inner wall of each arc-shaped groove. Each mounting ring contains a fixing component for fixing the exhaust pipe. Each fixing component... Each component includes a fixing rod, an upper fixing plate, a cylinder, and a lower fixing plate. A limiting component is installed on both the mounting ring and the mounting base. When welding a car exhaust pipe, the worker places the exhaust pipe on the lower fixing plate and controls the cylinder to move the lower fixing plate upward to engage with the upper fixing plate and press against the exhaust pipe, thus fixing the exhaust pipe. During the welding process, the worker rotates the mounting base to rotate the exhaust pipe. After rotating to a suitable angle, the limiting component restricts the rotation of the mounting ring, thereby performing circumferential welding at the connection point, which improves the efficiency of car exhaust pipe welding.

[0004] Existing automotive exhaust pipe welding fixtures have some problems in practical applications. When welding the exhaust pipe to the flange, it is necessary to clamp and fix the exhaust pipe and the flange separately, and to ensure that the exhaust pipe and the flange are precisely aligned. Existing welding fixtures cannot achieve quick clamping and alignment of the exhaust pipe and the flange, which has a certain impact on the efficiency of the welding work.

[0005] Therefore, it is necessary to invent a quick-positioning welding fixture for automotive exhaust system components to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a quick-positioning welding fixture for automotive exhaust system components to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick positioning welding fixture for automotive exhaust system components, comprising a support base, a positioning rod slidably inserted into the middle of the support base, multiple support arms fixedly mounted on the outer wall of the support base, movable arms rotatably mounted at the top of each of the multiple support arms via pins, and tension springs installed between the movable arms and the support arms, mounting brackets fixedly mounted at the top of each of the multiple movable arms, and guide wheels rotatably mounted inside each of the multiple mounting brackets via bearings, wherein the positioning rod... The top of the part has a cavity, and the outer wall of the cavity has multiple through grooves. Each of the through grooves has a slidable pressure block inside. One side of each pressure block inside the cavity is set as an inclined surface. The cavity has a slidable top block inside. The outer wall of the top block is set as an inclined structure and slides against the inclined surface. The bottom of the top block is fixedly installed with a movable rod. The movable rod passes through the inside of the positioning rod and extends to the bottom of the positioning rod. The bottom of the positioning rod has a threaded hole. The bottom of the movable rod is movably connected to the threaded hole by a thread.

[0008] Preferably, a transmission plate is fixedly installed at the bottom of the outer side wall of the positioning rod, and a threaded groove is provided through one end of the transmission plate. A support screw is installed inside the threaded groove by means of threads.

[0009] Preferably, a plurality of support columns are fixedly installed at the bottom of the support base, and a base is installed at the bottom of the plurality of support columns. The support screw is movably installed on the upper surface of the base through a bearing.

[0010] Preferably, a positioning groove is provided through the middle of the pressure block, a positioning block is fixedly installed inside the groove, and the positioning block is provided through the inside of the positioning groove. A spring is installed between the side of the positioning block near the cavity and the inner wall of the positioning groove.

[0011] Preferably, the outer surface of the pressure block is bonded with an anti-slip pad, and the outer surface of the anti-slip pad is provided with multiple anti-slip grooves.

[0012] Preferably, the top end of the positioning rod has a rounded corner.

[0013] Preferably, the outer side wall of the guide wheel is provided with an annular groove in the middle.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This invention features a support base and a positioning rod. The support base has multiple support arms and movable arms on its outer side, with guide wheels at the top of the movable arms. During the welding of a car exhaust pipe, the exhaust pipe can be inserted between the guide wheels. The guide wheels work together to initially clamp the exhaust pipe and automatically center it. After the exhaust pipe is placed, a flange can be fitted onto the top of the positioning rod. At this point, the flange and exhaust pipe are aligned. Multiple pressure blocks at the top of the positioning rod's outer side clamp the positioning rod and flange. Adjusting the position of the positioning rod downwards presses the flange firmly against the top of the exhaust pipe. This achieves rapid clamping of the exhaust pipe while simultaneously positioning it against the flange, thus improving the efficiency of exhaust pipe welding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model in the clamping state.

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0018] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0020] In the diagram: 1. Support base; 2. Positioning rod; 3. Support arm; 4. Movable arm; 5. Mounting bracket; 6. Guide wheel; 7. Cavity; 8. Through groove; 9. Pressure block; 10. Inclined surface; 11. Top block; 12. Movable rod; 13. Transmission plate; 14. Threaded groove; 15. Support screw; 16. Support column; 17. Base; 18. Positioning groove; 19. Positioning block; 20. Anti-slip pad. Detailed Implementation

[0021] 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.

[0022] This utility model provides, for example Figure 1-4The illustrated quick positioning welding fixture for automotive exhaust system components includes a support base 1. A positioning rod 2 is slidably inserted into the middle of the support base 1. The top of the positioning rod 2 has a rounded corner. Multiple support arms 3 are fixedly installed on the outer side wall of the support base 1. Each of the multiple support arms 3 has a movable arm 4 rotatably mounted on its top via a pin. A tension spring is installed between the movable arm 4 and the support arm 3. Each of the multiple movable arms 4 has a mounting bracket 5 fixedly mounted on its top. Each of the multiple mounting brackets 5 has a guide wheel 6 rotatably mounted inside via a bearing. The outer side wall of the guide wheel 6 has an annular groove in the middle. The annular groove is used to improve the fit between the guide wheel 6 and the automotive exhaust pipe, thereby improving the clamping stability of the automotive exhaust pipe.

[0023] The positioning rod 2 has a cavity 7 at its inner top end. The outer wall of the cavity 7 has multiple through grooves 8. Each through groove 8 has a sliding pressure block 9. The outer surface of the pressure block 9 is bonded with an anti-slip pad 20, and the outer surface of the anti-slip pad 20 has multiple anti-slip grooves. The anti-slip pad 20 is used to increase the friction between the pressure block 9 and the exhaust pipe flange, thereby improving the clamping effect of the device.

[0024] Multiple pressure blocks 9 are located inside the cavity 7, and one side of each block is set as an inclined surface 10. A top block 11 is slidably provided inside the cavity 7. The outer side wall of the top block 11 is set as an inclined structure and slides against the inclined surface 10. A movable rod 12 is fixedly installed at the bottom end of the top block 11. The movable rod 12 passes through the inside of the positioning rod 2 and extends to the bottom of the positioning rod 2. A screw hole is provided at the bottom end of the positioning rod 2. The bottom end of the movable rod 12 is movably connected to the screw hole through a thread. The thread and the screw hole are engaged so that the movable rod 12 can drive the top block 11 to move up and down when it rotates.

[0025] A transmission plate 13 is fixedly installed on the bottom of the outer wall of the positioning rod 2. One end of the transmission plate 13 is provided with a threaded groove 14. A support screw 15 is installed inside the threaded groove 14 by threads. Multiple support columns 16 are fixedly installed on the bottom of the support base 1. The bottom ends of the multiple support columns 16 are jointly installed with a base 17. The support screw 15 is movably installed on the upper surface of the base 17 by bearings. A handwheel is provided at the top of the support screw 15 so that the user can quickly rotate the support screw 15.

[0026] A positioning groove 18 is provided through the middle of the pressure block 9. A positioning block 19 is fixedly installed inside the through groove 8 and is provided through the positioning groove 18. A spring is installed between the side of the positioning block 19 near the cavity 7 and the inner wall of the positioning groove 18. The spring is used to push the pressure block 9 to reset it, so as to facilitate the unloading of the automobile exhaust pipe and flange after the welding work is completed.

[0027] Working principle of this utility model:

[0028] In use, the car exhaust pipe is first fitted onto the outside of the positioning rod 2, and then inserted between multiple movable arms 4. During this process, the car exhaust pipe and multiple guide wheels 6 press against each other, while the guide wheels 6, under the action of the mounting bracket 5, movable arms 4, and tension springs, exert a reverse force on the car exhaust pipe. The multiple guide wheels 6 cooperate to centrally clamp the car exhaust pipe above the support base 1. After the car exhaust pipe is placed, the flange is fitted onto the top of the positioning rod 2. At this time, the positioning rod 2 can achieve initial positioning of the flange, and the flange and the center of the car exhaust pipe are coaxially positioned. Then, the movable rod 12 is rotated. Under the action of the thread and the screw hole at the bottom of the positioning rod 2, the movable rod 12 drives the top block 11 to move upward. 11 moves upward by pressing the inclined surface 10 through the inclined outer surface, so that the pressure block 9 slides outward along the through groove 8. Multiple pressure blocks 9 slide outward synchronously and press the inner wall of the flange to realize the connection between the positioning rod 2 and the flange. After the pressure block 9 opens and clamps the flange, it rotates the support screw 15. The support screw 15 drives the transmission plate 13 to move downward under the action of the thread and the thread groove 14. The transmission plate 13 drives the positioning rod 2 to move downward, and the positioning rod 2 drives the flange to move downward, so that the flange presses the car exhaust pipe downward. At this time, the position between the car exhaust pipe and the flange is fixed, and the car exhaust pipe is pressed against the upper surface of the support seat 1. At this time, the clamping and fixing between the car exhaust pipe and the flange can be completed, and the car exhaust pipe can be welded.

[0029] It should be noted that the technical solution provided in this embodiment is applicable to the processing of welding between the automobile exhaust pipe and the flange. Furthermore, the positional relationship between the positioning rod 2 and the support seat 1 is determined by the position of the automobile exhaust pipe used for welding the flange. The technical solution in this embodiment is described as the automobile exhaust pipe and the flange being coaxial. When the automobile exhaust pipe and the flange are not concentric, the positional relationship between the positioning rod 2 and the support seat 1 should be adjusted synchronously. The above technical means are conventional means in the field and will not be elaborated here.

[0030] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. A quick positioning welding fixture for automotive exhaust system components, comprising a support base (1), characterized in that: A positioning rod (2) is slidably inserted into the middle of the support base (1). Multiple support arms (3) are fixedly installed on the outer wall of the support base (1). Each of the multiple support arms (3) has a movable arm (4) rotatably mounted on its top via a pin. A tension spring is installed between the movable arm (4) and the support arm (3). Each of the multiple movable arms (4) has a mounting bracket (5) fixedly mounted on its top. Each of the multiple mounting brackets (5) has a guide wheel (6) rotatably mounted inside via a bearing. A cavity (7) is opened at the top of the positioning rod (2). Multiple through grooves (8) are opened around the outer wall of the cavity (7). Each of the through slots (8) has a sliding pressure block (9) inside. Each of the pressure blocks (9) has an inclined surface (10) on one side inside the cavity (7). A top block (11) is slidably provided inside the cavity (7). The outer wall of the top block (11) is inclined and slides against the inclined surface (10). A movable rod (12) is fixedly installed at the bottom of the top block (11). The movable rod (12) passes through the inside of the positioning rod (2) and extends to the bottom of the positioning rod (2). A screw hole is provided at the bottom of the positioning rod (2). The bottom of the movable rod (12) is movably connected to the screw hole by a thread.

2. The quick positioning welding fixture for automotive exhaust system components according to claim 1, characterized in that: A transmission plate (13) is fixedly installed at the bottom of the outer side wall of the positioning rod (2). One end of the transmission plate (13) is provided with a threaded groove (14). A support screw (15) is installed inside the threaded groove (14) by thread.

3. The quick positioning welding fixture for automotive exhaust system components according to claim 2, characterized in that: The support base (1) has multiple support columns (16) fixedly installed at its bottom end. The bottom ends of the multiple support columns (16) are all mounted on a base (17). The support screw (15) is movably mounted on the upper surface of the base (17) through a bearing.

4. The quick positioning welding fixture for automotive exhaust system components according to claim 1, characterized in that: The middle part of the pressure block (9) is provided with a positioning groove (18), and a positioning block (19) is fixedly installed inside the through groove (8). The positioning block (19) is provided inside the positioning groove (18), and a spring is installed between the side of the positioning block (19) near the cavity (7) and the inner wall of the positioning groove (18).

5. A quick-positioning welding fixture for automotive exhaust system components according to claim 1, characterized in that: The outer surface of the pressure block (9) is bonded with an anti-slip pad (20), and the outer surface of the anti-slip pad (20) is provided with multiple anti-slip grooves.

6. A quick positioning welding fixture for automotive exhaust system components according to claim 2, characterized in that: The top of the positioning rod (2) is rounded.

7. A quick positioning welding fixture for automotive exhaust system components according to claim 1, characterized in that: The guide wheel (6) has an annular groove in the middle of its outer side wall.

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