A sizing device for exhaust pipe machining

By introducing a protective cover and wire rope mechanism into the shaping equipment for exhaust pipe processing, the safety risks and corrosion problems caused by exposed cutting wheels have been solved, thereby improving safety and service life.

CN224543271UActive Publication Date: 2026-07-24WUHAN SHIDA TONGTAI AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN SHIDA TONGTAI AUTO PARTS CO LTD
Filing Date
2025-09-01
Publication Date
2026-07-24

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Abstract

The utility model relates to exhaust pipe processing technical field discloses a kind of setting equipment for exhaust pipe processing, including base, the top of base is fixedly connected with mounting seat, the top of mounting seat is fixedly connected with driving motor, the output of driving motor is provided with driving shaft, the outside of driving shaft is fixedly connected with cutting wheel, the outside of cutting wheel is provided with protection mechanism, the protection mechanism is used to protect cutting wheel when equipment is idle and avoid operating personnel to be cut by mistake touching cutting wheel, the top of base is provided with extension mechanism, and the extension mechanism is used to extend or shorten support according to the length of pipe to be processed. Steel wire rope is wound outside the limiting wheel. In the utility model, the device is idle, the stretching spring provides elastic force to relatively push two protective shells to make them relatively gather along the slide plate to cover the cutting wheel again, which prolongs the service life of the cutting wheel and improves the practicability of the device.
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Description

Technical Field

[0001] This utility model relates to the field of exhaust pipe processing technology, and in particular to a shaping device for exhaust pipe processing. Background Technology

[0002] Exhaust pipe forming equipment is specifically designed for use in the production of automotive exhaust systems and related fields. It involves shaping, processing, and adjusting exhaust pipes. Its purpose is to ensure that the dimensions, shape, and performance of the exhaust pipes meet design requirements, improve production efficiency, and guarantee the quality of the exhaust pipes. Common exhaust pipe forming equipment includes exhaust pipe forming machines, automatic forming machines, pipe cutting machines, pipe flaring machines, pipe straightening machines, vibration forming machines, and heat treatment equipment. During the shaping process of exhaust pipes, cutting is often required according to length requirements. In existing technology, pipe cutting machines are commonly used for exhaust pipe cutting. The cutting tool is mechanically or electrically driven to cut the pipe. When the pipe is fixed on the machine, the saw blade starts to rotate and cuts the material by contacting the surface of the pipe. The rotation speed, feed rate, and pressure of the saw blade can be adjusted according to the material of the pipe and the cutting requirements.

[0003] Most existing pipe cutting machines have a protective cover on the upper part of the cutting wheel to protect it. However, for ease of use, the lower part of the cutting wheel is still exposed. Operators may accidentally touch the cutting wheel and get injured. Furthermore, the cutting wheel being exposed to the air will accelerate corrosion and reduce its service life, thus reducing the practicality of the device. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a shaping device for exhaust pipe processing, which aims to improve the problems of the lack of cutting wheel protection mechanisms in most existing exhaust pipe processing pipe cutting machines, resulting in harm to the operator's body and short service life of the cutting wheels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a shaping device for processing exhaust pipes, comprising a base, a mounting seat fixedly connected to the top of the base, a drive motor fixedly connected to the top of the mounting seat, a drive shaft provided at the output end of the drive motor, a cutting wheel fixedly connected to the outside of the drive shaft, a protective mechanism provided on the outside of the cutting wheel, the protective mechanism being used to protect the cutting wheel when the device is idle and to prevent operators from accidentally touching the cutting wheel and being cut, and an extension mechanism provided on the top of the base, the extension mechanism being used to extend or shorten the support according to the length of the pipe to be processed.

[0006] As a further description of the above technical solution: A mounting bracket is fixedly connected to the top of the base, a hydraulic cylinder is installed inside the mounting bracket, a fastening plate is fixedly connected to the output end of the hydraulic cylinder, and a fixing plate is fixedly connected to the top of the base.

[0007] As a further description of the above technical solution: The protective mechanism includes a protective cover, which is fixedly connected to the outside of the drive shaft. Two protective shells are slidably connected inside the protective cover. A mounting rod is fixedly connected to the top of the base. A limit rod is fixedly connected to the top of the base. A limit wheel is rotatably connected to the top of the limit rod. A wire rope is provided on the top of the mounting rod.

[0008] As a further description of the above technical solution: The steel wire rope passes through the top of the protective cover on the side away from the limiting wheel. The bottom two ends of the steel wire rope are respectively fixedly connected to the top of the two protective shells. A sliding plate is fixedly connected inside the protective cover. Both protective shells are slidably connected to the outside of the sliding plate. A tension spring is sleeved on the outside of the steel wire rope.

[0009] As a further description of the above technical solution: The steel wire rope is wound around the outside of the limit wheel.

[0010] As a further description of the above technical solution: The extension mechanism includes a support base, the bottom of which is fixedly connected to the top of the base. An extension plate is slidably connected inside the support base, and several slots are provided on the outside of the support base.

[0011] As a further description of the above technical solution: The extension plate is equipped with a compression spring inside. Both ends of the compression spring are fixedly connected to limit blocks. Each of the two limit blocks is fixedly connected to a locking rod on its opposite side. The locking rod engages with the locking groove.

[0012] As a further description of the above technical solution: Both of the limiting blocks are slidably connected inside the extension plate, and both of the locking rods pass through both sides of the extension plate.

[0013] This utility model has the following beneficial effects: 1. In this utility model, when cutting an exhaust pipe, the pipe to be cut is placed on the support seat. The hydraulic cylinder is activated to push the fastening plate to clamp the pipe. The cutting device is rotated downwards, and the wire rope is tightened through the limit wheel, pulling the two protective shells upwards until they retract into the interior of the protective cover, exposing the internal cutting wheel. Then, the drive motor is started to cut the pipe. When the device is not in use, the cutting device is reset. At this time, the tension spring provides elasticity to push the two protective shells relative to each other, so that they are brought together along the sliding plate and cover the cutting wheel again. This achieves the effect of completely covering the cutting wheel when the device is not in use. In addition, the wire rope and tension spring can be used to easily open the protective shell to expose the lower half of the cutting wheel for cutting operations, avoiding accidental contact with the cutting wheel by the operator. It also isolates the cutting wheel from contact with air, reducing the degree of corrosion, extending the service life of the cutting wheel, and improving the practicality of the device.

[0014] In this invention, when cutting exhaust pipes of different lengths, by pressing two locking rods into the extension plate and compressing the spring through the limiting block, the locking rods are released from their engagement with the slot. This allows the extension length of the extension plate to be slidably adjusted. After adjusting the length, the locking rods are aligned with the slot, and the limiting block moves to both sides due to the spring's rebound force, pushing the locking rods to re-engage with the slot. This extension mechanism enables the cutting device to be applicable to cutting exhaust pipes of different lengths, improving the efficiency of exhaust pipe cutting and enhancing the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a perspective view of a shaping device for processing exhaust pipes according to the present invention; Figure 2 This is a schematic diagram of the protective mechanism of a shaping device for exhaust pipe processing proposed in this utility model; Figure 3 This is a schematic diagram of the extension mechanism of a shaping device for processing exhaust pipes proposed in this utility model.

[0016] Legend: 1. Base; 2. Mounting seat; 3. Drive motor; 4. Drive shaft; 5. Cutting wheel; 6. Protective cover; 7. Protective shell; 8. Mounting rod; 9. Limiting rod; 10. Limiting wheel; 11. Steel wire rope; 12. Tension spring; 13. Slide plate; 14. Mounting bracket; 15. Hydraulic cylinder; 16. Fastening plate; 17. Fixing plate; 18. Bearing seat; 19. Extension plate; 20. Compression spring; 21. Limiting block; 22. Locking rod; 23. Locking slot. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1 - Figure 2 This utility model provides an embodiment of a shaping device for processing exhaust pipes, including a base 1, which supports the upper structure. A mounting seat 2 is fixedly connected to the top of the base 1, which also supports the upper structure. A drive motor 3 is fixedly connected to the top of the mounting seat 2, which provides power to drive a drive shaft 4. The output end of the drive motor 3 is provided with the drive shaft 4, which drives a cutting wheel 5. The cutting wheel 5 is fixedly connected to the outside of the drive shaft 4, and it cuts the exhaust pipe. A protective mechanism is provided on the outside of the cutting wheel 5 to protect the cutting wheel 5 when the equipment is idle and to prevent operators from accidentally touching the cutting wheel 5 and being cut. An extension mechanism is provided on the top of the base 1 to extend or shorten the support according to the length of the pipe to be processed. A mounting bracket 14 is fixedly connected to the top of the base 1. The mounting bracket 14 serves to mount the hydraulic cylinder 15. The hydraulic cylinder 15 is housed inside the mounting bracket 14 and provides power to push the fastening plate 16. The output end of the hydraulic cylinder 15 is fixedly connected to the fastening plate 16, which clamps the exhaust pipe. A fixing plate 17 is fixedly connected to the top of the base 1, which also clamps the exhaust pipe. The protective mechanism includes a protective cover 6, which protects the cutting wheel 5. The protective cover 6 is fixedly connected to the outside of the drive shaft 4. Two protective shells 7 are slidably connected inside the protective cover 6, which also protect the cutting wheel 5. A mounting rod 8 is fixedly connected to the top of the base 1, which secures the wire rope 11. A limit rod 9 is fixedly connected to the top of the base 1, which connects to the limit wheel 10. The top of the limit rod 9 is rotatably connected to the limit wheel 10, which winds the wire rope 11. The top of the mounting rod 8 is equipped with a steel wire rope 11, which serves to connect the protective shell 7. The side of the steel wire rope 11 away from the limit wheel 10 passes through the top of the protective cover 6. The bottom two ends of the steel wire rope 11 are fixedly connected to the top of the two protective shells 7 respectively. The inside of the protective cover 6 is fixedly connected with a sliding plate 13, which serves to connect the protective shell 7. Both protective shells 7 are slidably connected to the outside of the sliding plate 13. A tension spring 12 is sleeved on the outside of the steel wire rope 11, and the steel wire rope 11 is wound around the outside of the limit wheel 10.

[0019] Reference Figure 1 and Figure 3 The extension mechanism includes a support base 18, which serves to house the exhaust pipe. The bottom of the support base 18 is fixedly connected to the top of the base 1. An extension plate 19 is slidably connected inside the support base 18, which also houses the exhaust pipe. Several slots 23 are provided on the outside of the support base 18 for locking and fixing. A compression spring 20 is provided inside the extension plate 19, which provides elastic force to push the limiting block 21. Both ends of the compression spring 20 are fixedly connected to the limiting block 21 to prevent the compression spring 20 from falling off. A locking rod 22 is fixedly connected to the opposite sides of the two limiting blocks 21, which locks and engages with the slots 23. Both limiting blocks 21 are slidably connected inside the extension plate 19, and both locking rods 22 penetrate both sides of the extension plate 19.

[0020] Working principle: When cutting an exhaust pipe, place the pipe to be cut on the support seat 18. Start the hydraulic cylinder 15 to push the fastening plate 16 to clamp the pipe. Rotate the cutting device downwards, and the wire rope 11, through the limit wheel 10, tightens, pulling the two protective shells 7 upwards until they retract into the interior of the protective cover 6, exposing the internal cutting wheel 5. Then, start the drive motor 3 to cut the pipe. When the device is idle, reset the cutting device. At this time, the tension spring 12 provides elasticity, pushing the two protective shells 7 relative to each other along the sliding plate 13, thus re-covering the cutting wheel 5.

[0021] When cutting exhaust pipes of different lengths, by pressing the two locking rods 22 into the extension plate 19, the limiting block 21 compresses the spring 20, releasing it from the locking state with the slot 23, and the extension length of the extension plate 19 can be slidably adjusted. After adjusting the length, the locking rods 22 are aligned with the slot 23. Under the influence of the spring 20's rebound force, the limiting block 21 moves to both sides, pushing the locking rods 22 to re-lock and engage with the slot 23.

[0022] 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. A shaping device for processing exhaust pipes, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to the mounting base (2), the top of the mounting base (2) is fixedly connected to the drive motor (3), the output end of the drive motor (3) is provided with a drive shaft (4), the outside of the drive shaft (4) is fixedly connected to the cutting wheel (5), the outside of the cutting wheel (5) is provided with a protective mechanism, the protective mechanism is used to protect the cutting wheel (5) when the equipment is idle and to prevent the operator from accidentally touching the cutting wheel (5) and being cut, the top of the base (1) is provided with an extension mechanism, the extension mechanism is used to extend or shorten the support according to the length of the pipe to be processed.

2. The shaping equipment for exhaust pipe processing according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a mounting bracket (14), and a hydraulic cylinder (15) is provided inside the mounting bracket (14). The output end of the hydraulic cylinder (15) is fixedly connected to a fastening plate (16), and the top of the base (1) is fixedly connected to a fixing plate (17).

3. The shaping equipment for exhaust pipe processing according to claim 1, characterized in that: The protective mechanism includes a protective cover (6), which is fixedly connected to the outside of the drive shaft (4). Two protective shells (7) are slidably connected inside the protective cover (6). An installation rod (8) is fixedly connected to the top of the base (1). A limit rod (9) is fixedly connected to the top of the base (1). A limit wheel (10) is rotatably connected to the top of the limit rod (9). A wire rope (11) is provided on the top of the installation rod (8).

4. The shaping equipment for exhaust pipe processing according to claim 3, characterized in that: The steel wire rope (11) passes through the top of the protective cover (6) on the side away from the limiting wheel (10). The bottom two ends of the steel wire rope (11) are respectively fixedly connected to the top of the two protective shells (7). A sliding plate (13) is fixedly connected inside the protective cover (6). Both protective shells (7) are slidably connected to the outside of the sliding plate (13). A tension spring (12) is sleeved on the outside of the steel wire rope (11).

5. The shaping equipment for exhaust pipe processing according to claim 3, characterized in that: The wire rope (11) is wrapped around the outside of the limiting wheel (10).

6. The shaping equipment for exhaust pipe processing according to claim 1, characterized in that: The extension mechanism includes a support base (18), the bottom of which is fixedly connected to the top of the base (1), and an extension plate (19) is slidably connected inside the support base (18). Several slots (23) are provided on the outside of the support base (18).

7. The shaping equipment for exhaust pipe processing according to claim 6, characterized in that: The extension plate (19) is provided with a compression spring (20), and both ends of the compression spring (20) are fixedly connected to limit blocks (21). The opposite sides of the two limit blocks (21) are fixedly connected to a locking rod (22), and the locking rod (22) engages with the locking groove (23).

8. The shaping equipment for exhaust pipe processing according to claim 7, characterized in that: Both of the limiting blocks (21) are slidably connected inside the extension plate (19), and both of the locking rods (22) pass through both sides of the extension plate (19).