Bending device for automobile exhaust pipe hook
By combining the feeding mechanism, bending mechanism, and clamping mechanism, the problem of damage to automotive exhaust pipe hooks during bending was solved, achieving stable clamping and safe bending, thus improving processing quality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KAIFENG TIANQUAN MACHINERY CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-24
AI Technical Summary
Existing car exhaust pipe hooks are prone to being pinched during bending, which can lead to poor assembly or even detachment, affecting vehicle safety.
A bending device including a feeding mechanism, a bending mechanism, and a clamping mechanism was designed. The device guides the movement of the clamping piece through an inclined guide groove and a block structure to avoid rotation and expand the clamping area. The device achieves stable bending of the pipe by driving the support base and the mold to rotate through a motor.
It effectively prevents damage to pipe fittings, ensures stable clamping and bending of pipe fittings, and improves the processing quality and safety of automobile exhaust pipe hooks.
Smart Images
Figure CN224157647U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bending technology for automobile exhaust pipe hooks, and more specifically to a bending device for automobile exhaust pipe hooks. Background Technology
[0002] The exhaust system plays a crucial role in a car, not only discharging exhaust gases produced during engine combustion but also significantly reducing noise levels. Its core function is to effectively collect exhaust gases from multiple cylinders, purify them, reduce noise through muffler treatment, and finally safely guide the cleaned exhaust gases to the rear of the vehicle for emission. To ensure smooth replacement and maintenance of the exhaust system, it is mounted on the underside of the vehicle using exhaust pipe hooks. These hooks are typically hollow tubes consisting of two main parts: a hook to hold the exhaust pipe and a connection part for attaching to the vehicle body. This design allows the exhaust hook to be easily attached to the underside of the vehicle body using bolts or a clip mechanism, providing a secure clamping hold for the exhaust pipe. Therefore, when the exhaust system needs replacement or repair, operators can simply release the clips or loosen the bolts to easily remove the exhaust hook, allowing the exhaust pipe to be removed from the car for repair or replacement.
[0003] To facilitate the hook portion of the exhaust pipe hook in supporting the vehicle's exhaust pipe, the hook portion needs to be curved. To quickly bend the pipe, a pipe bending machine is used to bend it, ensuring the pipe forms a pre-defined bent structure, thus creating a suitable exhaust pipe hook. The pipe bending machine includes a clamping mechanism for holding the pipe, a conveying mechanism for moving the pipe and clamping mechanism, and a bending mechanism for bending the pipe. During the bending operation, the pipe is first clamped and assembled onto the clamping mechanism, then the conveying mechanism inserts the pipe into the bending mechanism for bending. After bending, the clamping device is released to remove the bent pipe. The clamping mechanism itself consists of a clamping tube, several clamping plates hinged to the clamping tube, and a telescopic cylinder that rotates the clamping plates. The telescopic cylinder's function is to rotate the clamping plate around the hinge point with the clamping tube, thereby squeezing and fixing the pipe inserted into the clamping plate, ensuring that the pipe is firmly clamped and assembled onto the clamping tube. However, in actual operation, after the clamping plate rotates, the inner cavity of the clamping plate becomes tilted. This causes the pipe to be clamped and fixed through the end of the clamping plate, resulting in a relatively small contact area between the clamping plate and the pipe, which easily leads to stress concentration and makes the pipe prone to clamping marks. To facilitate the assembly of the car exhaust pipe hook onto the vehicle body, the connecting part of the car exhaust pipe hook is designed with a convex structure. If the connecting part of the car exhaust pipe hook is damaged during the use of the clamping mechanism, it will adversely affect the assembly of the car exhaust pipe hook to the vehicle body, and may even cause the car exhaust pipe hook to fall off during vehicle operation, undoubtedly increasing the risk of traffic accidents. Therefore, there are shortcomings in the bending aspect of the car exhaust pipe hook to better clamp the pipe and avoid damage, thereby improving the processing quality of the car exhaust pipe hook. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this utility model provides a bending device for a car exhaust pipe hook that facilitates clamping of pipes and avoids damaging them, thereby overcoming the deficiencies in existing technologies.
[0005] The technical solution adopted by this utility model is as follows: a bending device for an automobile exhaust pipe hook, including a frame, a feeding mechanism and a bending mechanism provided on the frame, and a clamping mechanism provided between the feeding mechanism and the bending mechanism; the feeding mechanism includes a support seat provided on the frame and a motor one for driving the support seat to move; the bending mechanism includes a rotating shaft provided on the frame, a mold one and a mold two respectively provided on the rotating shaft, and a motor two for driving the rotating shaft to rotate; the clamping mechanism includes a support pipe connected to one side of the support seat, a telescopic cylinder one provided inside the support pipe, a push pipe provided on the telescopic end of the telescopic cylinder one, a plurality of fixing blocks provided on the side of the support pipe away from the support seat, clamping plates provided on the fixing blocks, and inserts provided on both sides of the clamping plates respectively. The plurality of fixing blocks are evenly installed on the inner wall of the support pipe along the circumferential direction of the support pipe. Guide grooves are inclinedly opened on both sides of the fixing blocks. The guide grooves gradually approach the axis of the support pipe along the direction away from the support seat. One side of the insert is movably fitted in the guide groove, and the other side of the insert is installed on the clamping plate. One side of the clamping plate is connected to the push pipe, and the push pipe is connected to the support pipe through the telescopic cylinder one.
[0006] Preferably, a fixing tube is provided on the side of the push tube away from the support base, one side of the fixing tube is fixedly fitted onto the push tube, and a push ring is provided on the other side of the fixing tube. The push ring and the fixing tube are an integral structure, and the outer diameter of the push ring is not less than the outer diameter of the fixing tube. A circular stepped slot is opened on the side of the clamping piece near the support base, and the push ring is fitted onto the side of the slot away from the support base. The outer diameter of the push ring is not greater than the groove diameter on the side of the slot away from the support base, and the outer diameter of the push ring is not less than the groove diameter on the side of the slot near the support base. The side of the slot near the support base is movably fitted onto the fixing tube.
[0007] Preferably, a push plate is movably fitted inside the fixed tube. The push plate has a circular plate structure, and its diameter matches the inner diameter of the fixed tube. A push rod is provided on one side of the push plate, and one side of the push rod is movably fitted inside the push tube. The diameter of the push rod matches the inner diameter of the push tube. A spring is provided between the push plate and the push tube. The spring is movably fitted on the push rod, and one side of the spring and the other side of the push rod are respectively installed on the push plate. The other side of the spring is installed on the push tube.
[0008] Preferably, the guide groove is formed on the side of the fixing block, the insert block adopts an L-shaped block structure, the bottom of the insert block is movably fitted into the guide groove, the top of the insert block is installed on the clamping plate, the inner side of the fixing block is provided with a sleeve hole, the clamping plate is fitted into the sleeve hole, the outer shape of the clamping plate adopts a conical structure, the outer wall of the clamping plate gradually approaches the axis of the support tube along the direction away from the support seat, the outer shape of the clamping plate matches the shape of the sleeve hole, and the inner cavity of the clamping plate adopts a cylindrical structure.
[0009] Preferably, the motor is mounted on the frame, and a lead screw is provided on the output end of the motor. The lead screw is threaded onto the support base and is rotatably mounted on the frame. Guide rails are provided on both sides of the lead screw, and sliders are movably mounted on the guide rails. The sliders are mounted on the support base.
[0010] Preferably, the support base is provided with a bearing seat, and a roller is rotatably mounted on the bearing seat. One side of the roller is connected to the support tube. A motor is provided above the bearing seat. The motor is connected to the support base through the bearing seat. A gear is fixedly mounted on the drive end of the motor and the other side of the roller. The gear on the motor meshes with the gear on the roller.
[0011] Preferably, a fixing plate is provided on one side of the frame, and the fixing plate is installed on the side of the frame. A fixing seat is provided on the side of the fixing plate away from the frame. A telescopic cylinder II, a guide rail II, and a slider II are respectively provided between the fixing seat and the frame. The slider II is fitted on the guide rail II, and the inner cavity shape of the slider II matches the outer shape of the guide rail II. The rotating shaft is rotatably mounted on the fixing seat through a bearing. A bracket is provided on the rotating shaft. The mold II is connected to the rotating shaft through the bracket. The mold II is located on one side of the mold I. Gear II is fixedly fitted on the driving end of the rotating shaft and the motor II, respectively. The gear II mounted on the motor II meshes with the gear II mounted on the rotating shaft.
[0012] The beneficial effects of this utility model are as follows: First, through the guide groove inclinedly opened on the fixing block and the insert block set on the clamping plate, the clamping plate is guided to move along the axis of the support pipe during its movement, so as to clamp the pipe fitting inserted between several clamping plates. Since the clamping plate does not rotate during its movement, the clamping area of the clamping plate is not limited to the end of the clamping plate, but extends to the entire inner cavity of the clamping plate, so as to avoid stress concentration and effectively prevent damage to the pipe fitting. Moreover, the utility model uses a motor to drive the support base to move, thereby driving the clamping mechanism to move towards or away from the bending mechanism, driving the pipe fitting to be inserted between mold one and mold two. The motor two drives mold one and mold two to rotate, so that mold one and mold two can be used to squeeze and bend the pipe fitting, thereby quickly bending the pipe fitting.
[0013] Secondly, this invention utilizes a push ring connected to the push tube and a circular stepped slot on one side of the clamping plate. Since the outer diameter of the push ring is not less than the groove diameter on the side of the slot closest to the support, the push ring engages with the side of the slot furthest from the support. This allows the push ring to move the clamping plate along the direction closer to or away from the support tube. Because the outer diameter of the push ring is not greater than the groove diameter on the side of the slot furthest from the support, interference from the push ring is avoided when the clamping plate moves along the axis closer to the support tube, facilitating movement. Furthermore, this invention uses a push plate to position the clamped pipe fitting. By abutting the end of the pipe fitting against the push plate, positioning is quickly achieved. A spring buffers the impact when the pipe fitting abuts the push plate, and a push rod restricts the direction of movement of the push plate, preventing impact or shaking during positioning and improving its positioning effect.
[0014] Furthermore, this invention constrains the movement of the clamping piece through the inner hole of the fixing block, reducing wobbling during movement. The internal shape of the clamping piece is cylindrical to facilitate clamping the pipe fitting. Moreover, this invention utilizes a lead screw, guide rail, and slider to allow a motor to move the support base. A roller on the bearing seat rotates, driving the clamping mechanism. Gears on the motor and roller control the rotation angle of the clamping mechanism, thereby rotating the clamped pipe fitting to meet the rotation requirements during bending.
[0015] In addition, this utility model uses a telescopic cylinder, a guide rail, and a slider to adjust the position of the fixed seat. The bracket on the rotating shaft allows the mold to be positioned on one side of the mold, so that the mold and the mold can be used to bend both sides of the pipe. The rotating shaft, the drive end of the motor, and the gears that are fixedly mounted on it allow the motor to drive the rotation of the rotating shaft, thereby completing the bending process. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the assembly of the support base and the clamping mechanism in this utility model.
[0018] Figure 3 This is an assembly cross-sectional view of the support tube, fixing block, clamping plate and push tube in this utility model.
[0019] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.
[0020] Figure 5This is a schematic diagram of the assembly of the telescopic cylinder and the push tube in this utility model.
[0021] Figure 6 This is an exploded view of the assembly of the fixing block and the clamping piece in this utility model.
[0022] Figure 7 This is a three-dimensional schematic diagram of the bending mechanism in this utility model. Detailed Implementation
[0023] like Figures 1 to 7 As shown, a bending device for an automotive exhaust pipe hook includes a frame 1, a feeding mechanism and a bending mechanism mounted on the frame 1, and a clamping mechanism between the feeding mechanism and the bending mechanism. The feeding mechanism includes a support base 2 mounted on the frame 1 and a motor 3 that drives the support base 2 to move, thereby completing the feeding operation. The bending mechanism includes a rotating shaft 4 mounted on the frame 1, a die 5 and a die 6 mounted on the rotating shaft 4, and a motor 7 that drives the rotating shaft 4 to rotate. The die 5 and the die 6 are respectively opened... The device includes a bending groove with a semi-circular cross-section. A pipe is inserted into the bending grooves of mold 5 and mold 6. Motor 7 drives the rotating shaft 4 to rotate, thereby rotating molds 5 and 6 to bend the pipe inserted into the bending grooves. The clamping mechanism includes a support pipe 8 connected to one side of the support base 2, a telescopic cylinder 9 inside the support pipe 8, a push pipe 10 on the telescopic end of the telescopic cylinder 9, several fixing blocks 11 on the side of the support pipe 8 away from the support base 2, clamping plates 12 on the fixing blocks 11, and clamping plates 12... Insert blocks 13 are respectively arranged on both sides, and several fixing blocks 11 are evenly installed on the inner wall of the support tube 8 along the circumference of the support tube 8. Guide grooves 14 are inclinedly opened on both sides of the fixing blocks 11. The guide grooves 14 gradually approach the axis of the support tube 8 from the direction away from the support seat 2. One side of the insert block 13 is movably fitted into the guide groove 14, and the other side of the insert block 13 is installed on the clamping plate 12. One side of the clamping plate 12 is connected to the push tube 10. The push tube 10 is connected to the support tube 8 through the telescopic cylinder 9. By controlling the telescopic cylinder 9 to extend or retract, the push tube 10 and several clamping plates 12 are driven. Moving along the axial direction of the support tube 8, the insertion block 13 and the clamping plate 12 are guided and constrained by the guide groove 14, causing the clamping plate 12 to move along the axial direction close to or away from the support tube 8, so as to clamp the pipe fitting inserted between several clamping plates 12; since the clamping plate 12 clamps the pipe fitting by moving, and the clamping plate 12 does not rotate during the movement, the clamping area between the clamping plate 12 and the pipe fitting is not limited to the end of the clamping plate 12, but extends the clamping area to the entire inner cavity of the clamping plate 12, so as to avoid stress concentration and thus effectively prevent damage to the pipe fitting.
[0024] In this embodiment, a fixing tube 15 is provided on the side of the push tube 10 away from the support base 2. One side of the fixing tube 15 is fixedly fitted onto the push tube 10, and a push ring 16 is provided on the other side of the fixing tube 15. The push ring 16 and the fixing tube 15 are an integral structure. The outer diameter of the push ring 16 is not less than the outer diameter of the fixing tube 15. A circular stepped slot 17 is opened on the side of the clamping piece 12 near the support base 2. The push ring 16 is fitted onto the side of the slot 17 away from the support base 2. The outer diameter of the push ring 16 is not greater than the groove diameter on the side of the slot 17 away from the support base 2, and the outer diameter of the push ring 16 is not less than the groove diameter on the side of the slot 17 near the support base 2. The side of the slot 17 near the support base 2 is movably fitted onto the fixing tube 15, thereby facilitating the movement of the clamping piece 12 by using the push ring 16.
[0025] Specifically, a push plate 18 is movably fitted inside the fixed tube 15. The push plate 18 has a circular plate structure, and its diameter matches the inner diameter of the fixed tube 15. A push rod 19 is provided on one side of the push plate 18, and one side of the push rod 19 is movably fitted inside the push tube 10. The diameter of the push rod 19 matches the inner diameter of the push tube 10. A spring 20 is provided between the push plate 18 and the push tube 10, and the spring 20 is movably fitted on the push rod 19. One side of the spring 20 and the other side of the push rod 19 are separate. The spring 20 is installed on the push plate 18, and the other side of the spring 20 is installed on the push tube 10. The push plate 18 is used to position the clamped pipe. By inserting the pipe through several clamping pieces 12, one end of the pipe is brought into contact with the push plate 18 so as to quickly position the pipe. In addition, the spring 20 is used to buffer the impact on the push plate 18 and the push rod 19 restricts the movement direction of the push plate 18 to avoid the push plate 18 being impacted or shaking during the positioning process, so as to improve the positioning effect of the push plate 18.
[0026] Please refer to it again. Figure 6 The guide groove 14 is opened on the side of the fixing block 11. The insert block 13 adopts an L-shaped block structure. The bottom of the insert block 13 is movably fitted into the guide groove 14, and the top of the insert block 13 is installed on the clamping piece 12. The inner side of the fixing block 11 is provided with a sleeve hole 21. The clamping piece 12 is fitted into the sleeve hole 21. The outer shape of the clamping piece 12 adopts a conical structure. The outer side of the clamping piece 12 gradually moves towards the axis of the support pipe 8 away from the support seat 2. The outer shape of the clamping piece 12 matches the shape of the sleeve hole 21. The inner cavity of the clamping piece 12 adopts a cylindrical structure to facilitate the clamping of the pipe fitting using the clamping piece 12.
[0027] In this embodiment, the motor 3 is mounted on the frame 1. A lead screw 22 is provided on the output end of the motor 3. The lead screw 22 is threaded onto the support base 2. The lead screw 22 is rotatably mounted on the frame 1. Guide rails 23 are respectively provided on both sides of the lead screw 22. A slider 24 is movably mounted on the guide rails 23. The inner shape of the slider 24 matches the outer shape of the guide rails 23. The axial direction of the lead screw 22 is parallel to the extension direction of the guide rails 23, thereby restricting the support base 2 to move only along the extension direction of the guide rails 23. The slider 24 is mounted on the support base 2. The operation of the motor 3 drives the lead screw 22 to rotate. Under the constraint of the guide rails 23 and the slider 24, the support base 2 moves to complete the feeding operation.
[0028] Specifically, the support base 2 is provided with a bearing seat 25, and a roller shaft 26 is rotatably mounted on the bearing seat 25. One side of the roller shaft 26 is connected to the support tube 8. A motor 27 is provided above the bearing seat 25. The motor 27 is connected to the support base 2 through the bearing seat 25. Gears 28 are fixedly mounted on the drive end of the motor 27 and the other side of the roller shaft 26, respectively. The gears 28 mounted on the motor 27 mesh with the gears 28 mounted on the roller shaft 26, thereby driving the roller shaft 26 to rotate through the motor 27, thereby driving the clamping mechanism to rotate, and in turn driving the clamped tube to rotate, so as to meet the bending requirements of the tube.
[0029] Please refer to it again. Figure 1 and 7A fixing plate 29 is provided on one side of the frame 1. The fixing plate 29 is installed on the side of the frame 1. A fixing seat 30 is provided on the side of the fixing plate 29 away from the frame 1. A telescopic cylinder 31, a guide rail 32, and a slider 33 are respectively provided between the fixing seat 30 and the frame 1. The slider 33 is fitted onto the guide rail 32. The inner shape of the slider 33 matches the outer shape of the guide rail 32. The extension direction of the guide rail 32 is parallel to the extension direction of the telescopic cylinder 31, thereby restricting the fixing seat 30 to move only along the extension direction of the guide rail 32. The rotating shaft 4 is rotatably mounted on the fixing seat 30 through a bearing. A bracket 34 is provided on the rotating shaft 4. The mold 6 is connected to the rotating shaft through the bracket 34. The components are connected in four stages. Mold 2 6 is located on one side of mold 1 5, so that the bending grooves in mold 1 5 and mold 2 6 form a circular groove. The car exhaust pipe hook passes through this circular groove. By rotating motor 2 7, mold 1 5 and mold 2 6 are used to bend the pipe. Gear 2 35 is fixedly mounted on the drive end of the rotating shaft 4 and motor 2 7 respectively. Gear 2 35 mounted on motor 2 7 meshes with gear 2 35 mounted on rotating shaft 4, so as to facilitate the use of motor 2 7 to drive rotating shaft 4, mold 1 5, bracket 34 and mold 2 6 to rotate. Moreover, the telescopic cylinder 2 31 is controlled to extend and retract, so as to facilitate the movement of fixed seat 30 to adjust the bending position.
[0030] The instructions for using this product are as follows: Figures 1 to 7As shown, firstly, one side of the pipe fitting is inserted into several clamping plates 12, so that the end of the pipe fitting is tightly against one side of the push plate 18. By controlling the extension action of the telescopic cylinder 9, the push tube 10, the fixed tube 15, and the push ring 16 are moved towards the bending mechanism, which in turn moves the clamping plates 12 towards the bending mechanism. At the same time, the movement of the insert block 13 and the clamping plates 12 is guided and constrained by the guide groove 14, which moves the clamping plates 12 along the axis near the support tube 8, thereby clamping the pipe fitting inserted between the clamping plates 12. Then, by operating the motor 3, the lead screw 22 is rotated, which pushes the support base 2, the clamping mechanism, and the pipe fitting towards the bending mechanism. At the same time, by controlling the extension action of the telescopic cylinder 31, the position of the rotating shaft 4 is adjusted so that the pipe fitting is inserted into the bending groove opened in the mold 5 and the bending groove opened in the mold 6. Next, by controlling the rotation of motor 27 and motor 327, the bending direction of the pipe is adjusted, and the pipe fitting is bent using mold 15 and mold 26. After the bending process is completed, the telescopic cylinder 19 is first controlled to shorten, so that the push pipe 10, the fixed pipe 15 and the push ring 16 move in the direction of the original bending mechanism, thereby moving the clamping plate 12 away from the bending mechanism to release the clamping of the pipe fitting. Then, the motor 13, motor 27, motor 327 and telescopic cylinder 231 are controlled to reset, so that the bent car exhaust pipe hook can be removed.
[0031] In this embodiment, the guide groove 14 inclined on the fixing block 11 and the insertion block 13 on the clamping piece 12 guide the clamping piece 12 to move along the axial direction of the support tube 8 during its movement. This allows the clamping piece 12 to move closer to or further away from the axial direction of the support tube 8, thus clamping the pipe fitting inserted between several clamping pieces 12. Since the clamping piece 12 does not rotate during its movement, the clamping area of the clamping piece 12 is not limited to its end but extends to the entire inner cavity of the clamping piece 12, avoiding stress concentration and effectively preventing damage to the pipe fitting. Furthermore, in this embodiment, the motor 3 drives the support base 2 to move, thereby moving the clamping mechanism closer to or further away from the bending mechanism. This causes the pipe fitting to be inserted between the mold 5 and the mold 6. The motor 6 then drives the mold 5 and the mold 6 to rotate, using the mold 5 and the mold 6 to press and bend the pipe fitting, thus quickly bending the pipe fitting.
[0032] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.
Claims
1. A bending device for an automobile exhaust pipe hook, comprising a frame (1), and a feeding mechanism and a bending mechanism disposed on the frame (1), characterized in that: A clamping mechanism is provided between the feeding mechanism and the bending mechanism; The feeding mechanism includes a support base (2) mounted on the frame (1) and a motor (3) that drives the support base (2) to move. The bending mechanism includes a rotating shaft (4) rotatably mounted on a frame (1), a mold (5) and a mold (6) respectively mounted on the rotating shaft (4), and a motor (7) that drives the rotating shaft (4) to rotate. The clamping mechanism includes a support pipe (8) connected to one side of the support base (2), a telescopic cylinder (9) installed inside the support pipe (8), a push pipe (10) installed on the telescopic end of the telescopic cylinder (9), several fixing blocks (11) installed on the side of the support pipe (8) away from the support base (2), clamping plates (12) installed on the fixing blocks (11), and inserting blocks (13) respectively installed on both sides of the clamping plates (12). The several fixing blocks (11) are evenly installed along the circumference of the support pipe (8). Installed on the inner wall of the support tube (8), the fixed block (11) has guide grooves (14) on both sides at an inclination. The guide grooves (14) gradually approach the axis of the support tube (8) along the direction away from the support seat (2). One side of the insert (13) is movably fitted in the guide groove (14), and the other side of the insert (13) is installed on the clamp (12). One side of the clamp (12) is connected to the push tube (10), and the push tube (10) is connected to the support tube (8) through the telescopic cylinder (9).
2. The bending device for the automobile exhaust pipe hook according to claim 1, characterized in that: The push tube (10) is provided with a fixed tube (15) on the side away from the support base (2). One side of the fixed tube (15) is fixedly fitted on the push tube (10). The other side of the fixed tube (15) is provided with a push ring (16). The push ring (16) and the fixed tube (15) are an integral structure. The outer diameter of the push ring (16) is not less than the outer diameter of the fixed tube (15). The clamp (12) is provided with a circular stepped slot (17) on the side near the support base (2). The push ring (16) is fitted on the side of the slot (17) away from the support base (2). The outer diameter of the push ring (16) is not greater than the groove diameter of the side of the slot (17) away from the support base (2). The outer diameter of the push ring (16) is not less than the groove diameter of the side of the slot (17) near the support base (2). The side of the slot (17) near the support base (2) is movably fitted on the fixed tube (15).
3. The bending device for the automobile exhaust pipe hook according to claim 2, characterized in that: A push plate (18) is movably fitted inside the fixed tube (15). The push plate (18) has a circular plate structure. The diameter of the push plate (18) matches the inner diameter of the fixed tube (15). A push rod (19) is provided on one side of the push plate (18). One side of the push rod (19) is movably fitted inside the push tube (10). The diameter of the push rod (19) matches the inner diameter of the push tube (10). A spring (20) is provided between the push plate (18) and the push tube (10). The spring (20) is movably fitted on the push rod (19). One side of the spring (20) and the other side of the push rod (19) are respectively installed on the push plate (18), and the other side of the spring (20) is installed on the push tube (10).
4. The bending device for the automobile exhaust pipe hook according to claim 1, characterized in that: The guide groove (14) is opened on the side of the fixing block (11). The insert block (13) adopts an L-shaped block structure. The bottom of the insert block (13) is movably fitted in the guide groove (14). The top of the insert block (13) is installed on the clamp (12). The inner side of the fixing block (11) is provided with a sleeve hole (21). The clamp (12) is fitted in the sleeve hole (21). The outer shape of the clamp (12) adopts a conical structure. The outer wall of the clamp (12) gradually approaches the axis of the support tube (8) along the direction away from the support seat (2). The outer shape of the clamp (12) matches the shape of the sleeve hole (21). The inner cavity of the clamp (12) adopts a cylindrical structure.
5. The bending device for the automobile exhaust pipe hook according to claim 1, characterized in that: The motor (3) is mounted on the frame (1). A lead screw (22) is provided on the output end of the motor (3). The lead screw (22) is threaded onto the support base (2). The lead screw (22) is rotatably mounted on the frame (1). Guide rails (23) are provided on both sides of the lead screw (22). A slider (24) is movably mounted on the guide rails (23). The slider (24) is mounted on the support base (2).
6. The bending device for the automobile exhaust pipe hook according to claim 5, characterized in that: The support base (2) is provided with a bearing seat (25), and a roller shaft (26) is rotatably mounted on the bearing seat (25). One side of the roller shaft (26) is connected to the support tube (8). A motor three (27) is provided above the bearing seat (25). The motor three (27) is connected to the support base (2) through the bearing seat (25). A gear one (28) is fixedly mounted on the drive end of the motor three (27) and the other side of the roller shaft (26). The gear one (28) mounted on the motor three (27) meshes with the gear one (28) mounted on the roller shaft (26).
7. The bending device for the automobile exhaust pipe hook according to claim 1, characterized in that: A fixing plate (29) is provided on one side of the frame (1). The fixing plate (29) is installed on the side of the frame (1). A fixing seat (30) is provided on the side of the fixing plate (29) away from the frame (1). A telescopic cylinder (31), a guide rail (32), and a slider (33) are respectively provided between the fixing seat (30) and the frame (1). The slider (33) is fitted on the guide rail (32). The inner shape of the slider (33) is the same as the outer shape of the guide rail (32). The rotating shaft (4) is rotatably mounted on the fixed seat (30) through the bearing. A bracket (34) is provided on the rotating shaft (4). The mold two (6) is connected to the rotating shaft (4) through the bracket (34). The mold two (6) is located on one side of the mold one (5). The driving ends of the rotating shaft (4) and the motor two (7) are respectively fixedly fitted with gear two (35). The gear two (35) mounted on the motor two (7) meshes with the gear two (35) mounted on the rotating shaft (4).