Pipe fitting rotating and clamping mechanism

Abstract

The utility model discloses a pipe fitting rotating and clamping mechanism which comprises a working table, a rotating motor is arranged on the working table, the rotating motor is connected with a rotating shaft, a clamping mechanism is fixed to the end, opposite to the rotating motor, of the rotating shaft, and the side, opposite to the rotating shaft, of the clamping mechanism is a clamping part. According to the silencer pipe fitting welding fixture, automatic moving, rotating and clamping of a silencer are achieved through the rotating motor and the clamping mechanism, the silencer pipe fitting welding fixture is very suitable for welding and fixing application of the silencer pipe fitting and a steel wool ring, and the problems that a traditional fixed fixture is limited in size and poor in welding precision are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of muffler processing equipment, specifically a pipe fitting rotation clamping mechanism. Background Technology

[0002] As a crucial component of a vehicle's exhaust system, the automotive muffler typically employs a long tubular design. During the welding process, the muffler's end needs to be spot-welded to a steel wool ring, usually requiring 90° even welding at four points. Currently, there is a significant issue with efficiency and precision. Currently, fixed clamps are commonly used to hold the muffler in place. During welding, the clamps must be manually released, the muffler rotated to the next weld point, and then re-clamped for welding, resulting in low processing efficiency.

[0003] Existing clamping fixtures are incompatible with mufflers of different sizes. Common clamping fixtures primarily use mold locking to secure the muffler, which lacks flexibility in adjusting the clamping range and has a limited applicability, failing to meet the needs of mufflers of varying sizes. Manual clamping and rotation presents several problems: low efficiency (frequent movements are required to manually release the clamp and rotate the muffler, slowing the welding process and incurring significant labor costs); and poor positioning accuracy (manual operation can easily cause the muffler to shift relative to the clamp, affecting the precise positioning of the weld joints, thus reducing weld quality and the overall precision of the muffler).

[0004] Therefore, it is necessary to provide a rotary clamping mechanism for muffler pipe fittings used in muffler welding that can improve processing efficiency and accuracy. Utility Model Content

[0005] This utility model proposes a pipe fitting rotation clamping mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pipe fitting rotary clamping mechanism includes a worktable, on which a rotary motor is provided. The rotary motor is connected to a rotary shaft. A clamping mechanism is fixed at one end of the rotary shaft opposite to the rotary motor. The side of the clamping mechanism opposite to the rotary shaft is a clamping part. The clamping part of the clamping mechanism clamps a muffler pipe fitting.

[0008] Preferably, the worktable is provided with two bearing seats, and the rotating shaft is movably mounted on the bearing seats. A transmission wheel is fixed on the rotating shaft between the two bearing seats. The rotary motor is mounted on the worktable on one side of the transmission wheel, and a transmission wheel is fixed on the output shaft of the rotary motor. A transmission belt connects the transmission wheel and the transmission wheel. The rotary motor drives the rotating shaft to rotate via the transmission belt, which in turn drives the clamping mechanism and the muffler to rotate.

[0009] Preferably, the clamping mechanism includes a pneumatic gripper with two opposing clamping ends. A clamping block is mounted on each opposing side of the two clamping ends. A connecting block one is located on the side of the pneumatic gripper opposite to the clamping blocks. A second connecting block is located at the end of the rotating shaft near the pneumatic gripper. The first connecting block and the second connecting block are threadedly fixedly connected. The pneumatic gripper, also known as a finger cylinder, is a mature existing technology and will not be described in detail here.

[0010] Preferably, both clamping blocks have arc-shaped grooves on opposite sides, and the curvature of the two arc-shaped grooves matches the curvature of the outer circumference of the muffler. The clamping blocks and pneumatic grippers are detachably connected by bolts, and by replacing clamping blocks with different curvatures, they can be adapted to clamp mufflers of different diameters.

[0011] Preferably, the pneumatic gripper has a pad on the side opposite to the connecting block one. The pad has a mounting opening facing the muffler, and a fixing block is installed in the mounting opening. The fixing block is connected to the end of the muffler. This serves to position the muffler towards the clamping mechanism. The fixing block is fixed to the pad with bolts, and mufflers of different diameters can be positioned and connected by replacing fixing blocks of different diameters.

[0012] Preferably, the workbench is further provided with a positioning structure, and the positioning structure has a U-shaped groove. The outer periphery of the muffler contacts and is positioned within the U-shaped groove. The positioning structure includes several support frames mounted on the workbench. The U-shaped groove is located in the middle of the support frames, and the U-shaped groove has several threaded holes on it. Positioning wheels are detachably installed on the threaded holes. All support frames are arranged in a straight line, and the muffler is placed in the U-shaped groove in the same straight line. The support frames provide support and prevent the muffler from shifting position during processing.

[0013] Preferably, the outer surface of the positioning wheel is provided with a rubber layer. The positioning wheel is used to position the welded end of the muffler, and at the same time, it can rotate in coordination with the positioning wheel when the muffler rotates to prevent the outer surface of the muffler from directly contacting the support frame during rotation, which would cause scratches on the outer surface of the muffler. The size of the positioning wheel can be changed according to the size of the muffler, thereby adapting to the positioning of mufflers of different sizes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model achieves the effect of automatic rotation and clamping of muffler fittings by setting up a rotary motor, a rotary shaft, and a clamping mechanism. The rotary motor drives the rotary shaft to rotate, and the clamping mechanism rotates with the rotary shaft. The clamping part flexibly fixes the muffler fittings on the worktable, which is very suitable for the rotary welding processing of muffler fittings and steel wool rings.

[0016] Furthermore, the positioning structure with a U-shaped groove allows for precise positioning of the muffler's outer periphery by contacting the U-shaped groove. Combined with positioning wheels of the corresponding size, this effectively solves the problems of existing fixed clamps being unable to adapt to mufflers of different sizes and the low efficiency and accuracy of manual clamping and rotation. The fixing block is connected to the end of the muffler. It positions the muffler towards the clamping mechanism, while the positioning wheels position the welded end of the muffler, achieving accurate positioning of both ends and preventing positional deviation. Simultaneously, when the muffler rotates, the positioning wheels rotate in conjunction with the muffler, preventing the outer surface of the muffler from directly contacting the support frame during rotation and causing scratches. The size of the positioning wheels can be changed according to the size of the muffler, thus adapting to the positioning of mufflers of different sizes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping mechanism structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the pad and fixing block of this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the silencer and steel wool ring of this utility model;

[0022] 1. Workbench; 2. Rotary motor; 3. Rotary shaft; 4. Clamping mechanism; 5. Silencer; 6. Steel wool ring; 7. Positioning structure; 8. U-shaped groove; 9. Bearing seat; 10. Transmission wheel one; 11. Transmission wheel two; 12. Transmission belt; 13. Connecting block one; 14. Pneumatic gripper; 15. Clamping end; 16. Clamping block; 17. Pad block; 18. Fixing block; 19. Support frame; 20. Positioning wheel; 21. Mounting port; 22. Arc groove. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1-5A pipe fitting rotation clamping mechanism includes a worktable 1, on which a rotary motor 2 is provided. The rotary motor 2 is connected to a rotary shaft 3. A clamping mechanism 4 is fixed at one end of the rotary shaft 3 opposite to the rotary motor 2. The side of the clamping mechanism 4 opposite to the rotary shaft 3 is a clamping part. The clamping part of the clamping mechanism 4 clamps a muffler pipe fitting 5. The worktable 1 is also provided with a positioning structure 7, and the positioning structure 7 is provided with a U-shaped groove 8. The outer periphery of the muffler 5 contacts and is positioned in the U-shaped groove 8.

[0025] The worktable 1 is provided with two bearing seats 9. The rotating shaft 3 is movably mounted on the bearing seats 9. A transmission wheel 10 is fixed on the rotating shaft 3 between the two bearing seats 9. The rotary motor 2 is mounted on the worktable 1 on one side of the transmission wheel 10. A transmission wheel 11 is fixed on the output shaft of the rotary motor 2. A transmission belt 12 connects the transmission wheel 10 and the transmission wheel 11. The rotary motor 2 drives the rotating shaft 3 to rotate through the transmission belt 12, which in turn drives the clamping mechanism and the muffler 5 to rotate.

[0026] The clamping mechanism 4 includes a pneumatic gripper 14, which has two opposing gripping ends 15. A gripping block 16 is mounted on each opposite side of the two gripping ends 15. A connecting block 13 is located on the side of the pneumatic gripper 14 opposite to the gripping blocks 16. A second connecting block is located at the end of the rotating shaft 3 near the pneumatic gripper 14. The first connecting block 13 and the second connecting block are threadedly fixedly connected. The pneumatic gripper 14, also known as a finger cylinder, is a mature existing technology and will not be described in detail here.

[0027] Both clamping blocks 16 have arc-shaped grooves 22 on opposite sides, and the curvature of the two arc-shaped grooves 22 matches the curvature of the outer circumference of the muffler 5. The clamping blocks 16 and the pneumatic grippers 14 are detachably connected by bolts. By replacing the clamping blocks 16 with different curvatures, it is possible to clamp mufflers 5 of different diameters.

[0028] The pneumatic gripper 14 has a pad 17 on the side opposite to the connecting block 13. The pad 17 has a mounting port 21 facing the muffler 5, and a fixing block 18 is installed in the mounting port 21. The fixing block 18 is connected to the end of the muffler 5. This serves to position the muffler 5 towards the clamping mechanism. The fixing block 18 is fixed to the pad 17 with bolts. Mufflers 5 of different diameters can be positioned and connected by replacing the fixing blocks 18 with different diameters.

[0029] The positioning structure 7 includes several support frames 19 mounted on the worktable 1. The U-shaped groove 8 is located in the middle of the support frame 19. The U-shaped groove 8 is provided with several threaded holes, and positioning wheels 20 are detachably installed on the threaded holes. All support frames 19 are arranged in a straight line, and the muffler 5 is placed in the U-shaped groove 8 in the same straight line. The support frames 19 provide support and prevent the muffler 5 from shifting position during processing.

[0030] The outer surface of the positioning wheel 20 is provided with a rubber layer. The positioning wheel 20 is used to position the welded end of the muffler 5. At the same time, when the muffler 5 rotates, it can rotate in coordination with the positioning wheel 20 to prevent the outer surface of the muffler 5 from directly contacting the support frame 19 during rotation, which would cause scratches on the outer surface of the muffler 5. The size of the positioning wheel 20 can be changed according to the size of the muffler 5 to adapt to the positioning of mufflers 5 of different sizes.

[0031] In use, the muffler 5 is placed on the support frame 19, and the positioning wheel 20 positions the welding end of the muffler 5. At the same time, the other end of the muffler 5 is connected and installed on the fixing block 18. The pneumatic gripper 14 is activated to clamp the end of the muffler 5, completing the clamping and positioning of the muffler 5. The steel wool ring 6 is connected to the welding end of the muffler 5 for the first welding point. The rotary motor 2 is activated, and the rotary shaft 3 is driven to rotate through the transmission belt 12, transmission wheel 10, and transmission wheel 11. This drives the clamping mechanism 4 and the muffler 5 clamped therein to rotate 90°. The second welding point is then performed. The rotation and welding operations are repeated to complete the four-point welding of the muffler 5 and the steel wool ring 6.

[0032] This system effectively achieves automatic rotation and clamping of the muffler by incorporating a rotary motor, rotary shaft, clamping mechanism, and positioning structure. The rotary motor drives the rotary shaft, which rotates simultaneously. The clamping mechanism flexibly fixes the muffler to the worktable via the clamping part. The positioning structure, equipped with a U-shaped groove, ensures precise positioning by allowing the outer periphery of the muffler to contact the groove. Combined with positioning wheels of the corresponding size, this effectively solves the problems of existing fixed clamps being unable to adapt to different sizes of mufflers and the low efficiency and accuracy of manual clamping and rotation. The fixing block connects to the end of the muffler, positioning it towards the clamping mechanism. The positioning wheels position the welded end of the muffler, ensuring accurate positioning at both ends and preventing positional deviation. During muffler rotation, the positioning wheels rotate in conjunction with the muffler, preventing direct contact between the outer surface of the muffler and the support frame, which could cause scratches. The size of the positioning wheels can be changed according to the size of the muffler, thus accommodating positioning of different sized mufflers.

[0033] This device is used for positioning the welded muffler 5 and the steel wool ring 6. The other fixing welding head is not shown in the figure and will not be further detailed here. It belongs to the existing spot welding structure. The rotating clamping structure of this invention realizes the fixing and movement of the muffler 5 and the steel wool ring 6, and realizes the spot welding of the fixing welding head.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pipe fitting rotary clamping mechanism, comprising a worktable (1), characterized in that, A rotary motor (2) is provided on the workbench (1). The rotary motor (2) is connected to a rotary shaft (3). A clamping mechanism (4) is fixed at one end of the rotary shaft (3) opposite to the rotary motor (2). The clamping mechanism (4) has a clamping part on one side opposite to the rotary shaft (3). Two bearing seats (9) are provided on the workbench (1). The rotary shaft (3) is movably mounted on the bearing seats (9). A transmission wheel (10) is fixed on the rotary shaft (3) between the two bearing seats (9). The rotary motor (2) is mounted on the workbench (1) on one side of the transmission wheel (10). A transmission wheel two (11) is fixed on the output shaft of the ), and a transmission belt (12) is connected between the transmission wheel one (10) and the transmission wheel two (11). The clamping mechanism (4) includes a pneumatic gripper (14). The pneumatic gripper (14) has two oppositely arranged clamping ends (15). A clamping block (16) is installed on the opposite side of the two clamping ends (15). A connecting block one (13) is provided on the side of the pneumatic gripper (14) opposite to the clamping block (16). A connecting block two is provided at the end of the rotating shaft (3) near the pneumatic gripper (14). The connecting block one (13) and the connecting block two are threadedly fixedly connected.

2. The pipe fitting rotary clamping mechanism according to claim 1, characterized in that, Both clamping blocks (16) are provided with arc-shaped grooves (22) on opposite sides, and the curvature of the two arc-shaped grooves (22) matches the curvature of the outer circumference of the muffler (5).

3. The pipe fitting rotary clamping mechanism according to claim 2, characterized in that, The pneumatic gripper (14) has a pad (17) on the side opposite to the connecting block (13). The pad (17) has an installation port (21) on the side facing the muffler (5). A fixing block (18) is installed in the installation port (21). The fixing block (18) is connected to the end of the muffler (5).

4. The pipe fitting rotary clamping mechanism according to claim 3, characterized in that, The workbench (1) is also provided with a positioning structure (7), and the positioning structure (7) is provided with a U-shaped groove (8), and the outer periphery of the muffler (5) is in contact with the U-shaped groove (8) for positioning.

5. The pipe fitting rotary clamping mechanism according to claim 4, characterized in that, The positioning structure (7) includes several support frames (19) mounted on the workbench (1). The U-shaped groove (8) is located in the middle of the support frame (19). The U-shaped groove (8) is provided with several threaded holes, and positioning wheels (20) are detachably installed on the threaded holes.

6. The pipe fitting rotary clamping mechanism according to claim 5, characterized in that, The outer surface of the positioning wheel (20) is provided with a rubber layer.

Images