A high-stability axial cutting machine applied to a stainless steel corrugated pipe
By using the lateral drive gear set and the synchronous tensioning technology of the central transmission frame in the high-stability axial cutting machine, the problems of skewed cutting end face and corrugation deformation during the cutting of stainless steel corrugated pipes are solved, achieving high-precision and high-efficiency cutting results, and improving the working environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU CHANGFENG BELLOWS CO LTD
- Filing Date
- 2026-05-14
- Publication Date
- 2026-06-12
AI Technical Summary
In the current stainless steel corrugated pipe cutting process, the pipe sections on both sides of the cutting point are in a free state, and axial tension cannot be applied synchronously, resulting in skewed cutting end face, corrugation deformation, increased burrs, and limited cutting accuracy and stability.
A high-stability axial cutting machine is used, which achieves synchronous tensioning of stainless steel corrugated pipes through the cooperation of a lateral drive gear set and a central transmission frame. Combined with a flip-type electronically controlled cutting machine and an optical positioning module, cutting accuracy and stability are ensured.
It achieves synchronous tensioning of the cutting end face during the cutting process of stainless steel corrugated pipe, which improves cutting accuracy and stability, reduces corrugation deformation and burrs, and enhances cutting efficiency and environmental cleanliness.
Smart Images
Figure CN122184458A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of stainless steel corrugated pipe cutting technology, and in particular to a highly stable axial cutting machine for stainless steel corrugated pipes. Background Technology
[0002] Stainless steel corrugated pipe is a metal pipe fitting with a corrugated wall structure. It utilizes the elastic deformation capacity of the pipe wall to achieve axial expansion and contraction and lateral bending. It is widely used in flexible connections, thermal displacement compensation, and vibration and noise reduction applications in fields such as instrumentation, petrochemical pipelines, aerospace, automotive exhaust systems, and HVAC. In practical engineering applications, stainless steel corrugated pipes typically need to be cut to a fixed length according to the precise dimensions of the installation space. The flatness and dimensional accuracy of the cut end face directly affect the connection sealing performance and assembly quality.
[0003] Currently, the cutting and processing of stainless steel corrugated pipes mainly employs two methods: abrasive wheel cutting and laser cutting. Abrasive wheel cutting uses a high-speed rotating abrasive wheel to grind and cut the pipe wall, which is low-cost but suffers from severe end-face burrs and unstable cutting quality. Laser cutting uses a high-energy laser beam to melt and cut the pipe wall, offering high cutting precision but requiring significant equipment investment and stringent clamping and positioning requirements for the corrugated pipe. In both methods, due to the thin wall, low rigidity, and corrugated structure of stainless steel corrugated pipes, the pipe sections on both sides of the cutting point are in a free state during the cutting process. It is impossible to apply axial tension simultaneously to maintain the rigid support of the pipe wall. This results in relative displacement and vibration of the pipe walls on both sides of the cutting point at the moment the cutting edge or laser beam contacts the pipe wall, causing problems such as skewed cut ends, corrugated deformation, and increased burrs, severely restricting cutting precision and processing stability. Therefore, how to achieve synchronous tension on both sides of the cutting end during the cutting process of stainless steel corrugated pipes to improve cutting precision and stability is a technical problem that urgently needs to be solved in this field. Summary of the Invention
[0004] The technical problem to be solved by the present invention is that the existing stainless steel corrugated pipe cutting method is that the pipe sections on both sides of the cutting point are in a free state during the cutting process, and axial tension cannot be applied synchronously, resulting in the cutting end face being skewed, corrugation deformation, increased burrs, and limited cutting accuracy and stability.
[0005] The technical solution adopted by the present invention to solve its technical problem is: a high-stability axial cutting machine for stainless steel corrugated pipes, including a bottom assembly frame, a detachable longitudinal operation frame fixedly installed on the upper end of the bottom assembly frame, a lateral drive gear set installed on both sides of the detachable longitudinal operation frame through lateral telescopic brackets, a central transmission frame movably assembled inside the detachable longitudinal operation frame, and a flip-type electric control cutting machine hinged on the central transmission frame.
[0006] Furthermore, a side-mounted motor for controlling the rotation of the central transmission frame is installed on the bottom assembly frame. An annular toothed groove is provided on the outer arc surface of the central transmission frame, and a rotating gear that meshes with the annular toothed groove is axially fixed on the drive shaft of the side-mounted motor.
[0007] Furthermore, the lateral drive gear set includes an electrically controlled drive gear mounted on a lateral telescopic bracket and a lateral anti-vibration and anti-slip strip mounted on the outer meshing surface of the electrically controlled drive gear.
[0008] Furthermore, a centrally located annular guide rail is fixedly installed inside the detachable longitudinal operating frame, and the centrally located transmission frame is movably assembled inside the centrally located annular guide rail.
[0009] Furthermore, the flip-type electronically controlled cutting machine includes an arc-shaped flip bracket hinged to the side wall of the central transmission frame, a side-mounted adjusting support rod for controlling the arc-shaped flip bracket, and an electronically controlled cutting blade installed at the end of the arc-shaped flip bracket.
[0010] Furthermore, the upper end of the detachable longitudinal operating frame is provided with an arc-shaped transition port that facilitates the outward flipping of the arc-shaped rotating bracket, and optical positioning modules are fixedly installed on both ends of the arc-shaped transition port on the detachable longitudinal operating frame.
[0011] Furthermore, the detachable longitudinal operating frame output port is fixedly equipped with an arc-shaped guide cover.
[0012] Furthermore, the detachable longitudinal operating frame is provided with a bottom mounting block at its lower end. The detachable longitudinal operating frame is fixedly assembled with the bottom assembly frame by inserting the bottom mounting block into the mounting slot on the bottom assembly frame.
[0013] Furthermore, a longitudinally arranged bottom guide tube is fixedly installed at the lower end of the bottom assembly frame.
[0014] Furthermore, a bottom dust collection box is fixedly installed at the lower end of the bottom guide pipe, and a top-mounted centrifugal pump is fixedly installed at the upper end of the bottom dust collection box.
[0015] The beneficial effects of this invention are: (1) The present invention uses the lateral drive gear set on both sides of the detachable longitudinal operation frame to clamp the stainless steel corrugated pipe from both sides simultaneously. With the lateral telescopic bracket, a controllable axial tension force is applied, which realizes the synchronous tensioning of both sides of the pipe wall during the cutting process, effectively avoiding the skewing and corrugation deformation of the cutting end face, and significantly improving the cutting accuracy and stability.
[0016] (2) The present invention uses a central transmission frame to drive a flip-type electric control cutting machine to rotate and cut around the pipe wall. The central ring guide rail ensures the roundness and consistency of the cutting trajectory. At the same time, the flip-type structure facilitates the rapid entry and exit of the cutting blade, thus improving the cutting efficiency.
[0017] (3) The present invention achieves precise calibration of the cutting position through the optical positioning module, and with the side-mounted motor driving the central transmission frame to rotate precisely, high-precision fixed-length cutting is achieved. At the same time, the bottom guide pipe, together with the bottom dust collection box and the top centrifugal pump, effectively collects the metal dust generated during cutting, improving the working environment. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention in its idle state.
[0020] Figure 2 This is a schematic diagram of the internal structure of the detachable longitudinal operation frame in the cutting state in this invention.
[0021] Figure 3 yes Figure 2 Internal cross-sectional view along the AA direction.
[0022] Explanation of reference numerals in the attached drawings: 100. Bottom assembly frame; 200. Detachable longitudinal operating frame; 210. Lateral telescopic bracket; 220. Lateral drive gear set; 221. Electrically controlled drive gear; 222. Lateral anti-vibration and anti-slip strip; 230. Centrally placed annular guide rail; 240. Arc-shaped transition port; 250. Optical positioning module; 260. Arc-shaped guide cover; 270. Bottom mounting block; 300. Centrally placed transmission frame; 310. Annular toothed groove; 320. Side-mounted motor; 330. Rotating gear; 400. Tilting electrical control cutting machine; 410. Arc-shaped tilting bracket; 420. Side-mounted adjusting support rod; 430. Electrically controlled cutting blade; 500. Bottom guide pipe; 600. Bottom dust collection box; 610. Top-mounted centrifugal pump. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention and therefore showing only the components relevant to the invention. In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in the present invention based on the specific circumstances.
[0024] like Figure 1 , Figure 2 and Figure 3The high-stability axial cutting machine for stainless steel corrugated pipes shown includes a bottom mounting frame 100, a detachable longitudinal operating frame 200, a lateral drive gear set 220, a central transmission frame 300, and a flip-type electric control cutting machine 400.
[0025] The bottom assembly frame 100 serves as the bottom support structure for this equipment. A detachable longitudinal operating frame 200 is fixedly installed on the upper end of the bottom assembly frame 100. The lower end of the detachable longitudinal operating frame 200 is provided with a bottom mounting block 270. The detachable longitudinal operating frame 200 is inserted into the bottom assembly frame 100 through the bottom mounting block 270 and is fixedly assembled with the bottom assembly frame 100 by bolts, forming a detachable connection structure, which facilitates the disassembly, assembly, and maintenance of the equipment.
[0026] The detachable longitudinal operating frame 200 has lateral drive gear sets 220 mounted on both sides via lateral telescopic brackets 210. The lateral drive gear set 220 includes an electrically controlled drive gear 221 mounted on the lateral telescopic bracket 210 and lateral anti-vibration and anti-slip strips 222 mounted on the outer meshing surface of the electrically controlled drive gear 221. The lateral telescopic bracket 210 is driven by an electric push rod, which can automatically adjust the distance between the two electrically controlled drive gears 221 according to the diameter of the stainless steel corrugated pipe, and can also straighten and tighten the stainless steel corrugated pipe during cutting. During operation, the lateral telescopic bracket 210 drives the electrically controlled drive gears 221 on both sides to engage inward into the grooves in the wall of the stainless steel corrugated pipe. The electrically controlled drive gears 221 rotate, causing the stainless steel corrugated pipe to move axially. At the same time, the lateral anti-vibration and anti-slip strips 222 are tightly fitted against the pipe wall, utilizing their anti-slip and vibration-damping characteristics to effectively suppress the vibration and displacement of the pipe wall during the cutting process while providing axial driving force, achieving synchronous tightening on both sides of the cutting end.
[0027] A centrally located annular guide rail 230 is fixedly installed inside the detachable longitudinal operating frame 200, and a centrally located transmission frame 300 is movably assembled inside the centrally located annular guide rail 230. A side-mounted motor 320 is mounted on the bottom mounting frame 100. An annular toothed groove 310 is formed on the outer arc-shaped surface of the centrally located transmission frame 300, and a rotating gear 330 that meshes with the annular toothed groove 310 is axially fixed on the drive shaft of the side-mounted motor 320. The side-mounted motor 320 drives the centrally located transmission frame 300 to make precise rotational movements along the centrally located annular guide rail 230 through the meshing of the rotating gear 330 and the annular toothed groove 310. The rotation angle and speed are precisely controlled by the controller.
[0028] A tilting-type electronically controlled cutting machine 400 is hinged to the side wall of the central transmission frame 300. The tilting-type electronically controlled cutting machine 400 includes an arc-shaped tilting bracket 410, a side-mounted adjusting support rod 420, and an electronically controlled cutting blade 430. One end of the arc-shaped tilting bracket 410 is hinged to the side wall of the central transmission frame 300. The fixed end of the side-mounted adjusting support rod 420 is mounted on the central transmission frame 300, and its telescopic end is hinged to the middle of the arc-shaped tilting bracket 410. The electronically controlled cutting blade 430 is mounted on the free end of the arc-shaped tilting bracket 410. An arc-shaped transition opening 240 is provided at the upper end of the detachable longitudinal operating frame 200, and optical positioning modules 250 are fixedly installed at both ends of the arc-shaped transition opening 240. Through optical positioning, the optical positioning modules 250 can control the tilting-type electronically controlled cutting machine 400 to tilt inwards when it is detected approaching, preventing the protruding structure of the tilting-type electronically controlled cutting machine 400 from getting stuck on the inner wall of the arc-shaped transition opening 240.
[0029] The detachable longitudinal operating frame 200 can be replaced according to different specifications and sizes of stainless steel corrugated pipes. During cutting, the stainless steel corrugated pipe is first inserted into one end of the detachable longitudinal operating frame 200, and then exits from the other end through the central transmission frame 300. The optical positioning module 250 detects the end position of the stainless steel corrugated pipe to determine the precise coordinates of the cutting point. Then, the side-mounted adjusting support rod 420 extends, pushing the arc-shaped flipping bracket 410 to flip upward around the hinge, so that the electrically controlled cutting blade 430 passes through the arc-shaped transition opening 240 and approaches the outer wall of the stainless steel corrugated pipe. At the same time, the lateral drive gear set 220 clamps the pipe wall under the drive of the lateral telescopic bracket 210, and the electrically controlled drive gear 221 rotates to drive the stainless steel corrugated pipe to be fed axially to the set cutting position. At this time, the side-mounted motor 320 starts, driving the central transmission frame 300 to rotate through the meshing of the rotating gear 330 and the annular toothed groove 310. The central transmission frame 300 drives the tilting electric control cutter 400 to rotate 360° around the pipe wall. During the rotation, the electric control cutting blade 430 performs annular cutting on the pipe wall. After the cutting is completed, the side-mounted adjusting support rod 420 retracts, the arc-shaped tilting bracket 410 flips outward and resets to the outside of the arc-shaped transition opening 240, and the electric control cutting blade 430 retracts from the working position, leaving operating space inside the detachable longitudinal operating frame 200.
[0030] The output port of the detachable longitudinal operating frame 200 is fixedly equipped with an arc-shaped guide cover 260, which guides the cut corrugated pipe segment to prevent it from deflecting or jamming at the moment of cutting. A longitudinally arranged bottom guide pipe 500 is fixedly installed at the lower end of the bottom assembly frame 100, and a bottom dust collection box 600 is fixedly installed at the lower end of the bottom guide pipe 500. A top-mounted centrifugal pump 610 is fixedly installed at the upper end of the bottom dust collection box 600. Metal dust and debris generated during the cutting process fall into the bottom guide pipe 500 under gravity. The top-mounted centrifugal pump 610 generates negative pressure within the bottom dust collection box 600, drawing the dust and debris into the bottom dust collection box 600 for centralized collection, thus preventing dust pollution of the working environment.
[0031] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A high-stability axial cutting machine for stainless steel corrugated pipes, comprising a bottom mounting frame (100), characterized in that: A detachable longitudinal operating frame (200) is fixedly installed on the upper end of the bottom assembly frame (100). A lateral drive gear set (220) is installed on both sides of the detachable longitudinal operating frame (200) through a lateral telescopic bracket (210). A central transmission frame (300) is movably assembled inside the detachable longitudinal operating frame (200). A flip-type electric control cutting machine (400) is hinged on the central transmission frame (300).
2. The high-stability axial cutting machine for stainless steel corrugated pipes according to claim 1, characterized in that: The bottom mounting frame (100) is equipped with a side-mounted motor (320) for controlling the rotation of the central transmission frame (300). The outer arc surface of the central transmission frame (300) is provided with an annular tooth groove (310). The drive shaft of the side-mounted motor (320) is axially fixed with a rotating gear (330) that meshes with the annular tooth groove (310).
3. The high-stability axial cutting machine for stainless steel corrugated pipes according to claim 1, characterized in that: The lateral drive gear set (220) includes an electrically controlled drive gear (221) mounted on a lateral telescopic bracket (210) and a lateral anti-vibration and anti-slip strip (222) mounted on the outer meshing surface of the electrically controlled drive gear (221).
4. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 1, characterized in that: The detachable longitudinal operating frame (200) has a centrally located annular guide rail (230) fixedly installed inside, and the centrally located transmission frame (300) is movably assembled inside the centrally located annular guide rail (230).
5. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 4, characterized in that: The flip-type electronically controlled cutting machine (400) includes an arc-shaped flip bracket (410) hinged to the side wall of the central transmission frame (300), a side-mounted adjusting support rod (420) for controlling the arc-shaped flip bracket (410), and an electronically controlled cutting blade (430) installed at the end of the arc-shaped flip bracket (410).
6. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 5, characterized in that: The upper end of the detachable longitudinal operating frame (200) is provided with an arc-shaped transition port (240) that facilitates the outward flipping of the arc-shaped flipping bracket (410). Optical positioning modules (250) are fixedly installed on both ends of the arc-shaped transition port (240) on the detachable longitudinal operating frame (200).
7. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 1, characterized in that: The output port of the detachable longitudinal operating frame (200) is fixedly equipped with an arc-shaped guide cover (260).
8. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 1, characterized in that: The detachable longitudinal operating frame (200) is provided with a bottom mounting block (270) at its lower end. The detachable longitudinal operating frame (200) is inserted into the mounting slot on the bottom assembly frame (100) through the bottom mounting block (270) and fixedly assembled with the bottom assembly frame (100).
9. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 1, characterized in that: The bottom assembly frame (100) is fixedly installed with longitudinally arranged bottom guide pipes (500).
10. A high-stability axial cutting machine for stainless steel corrugated pipes according to claim 9, characterized in that: The bottom dust collection box (600) is fixedly installed at the lower end of the bottom guide pipe (500), and the top centrifugal pump (610) is fixedly installed at the upper end of the bottom dust collection box (600).