A steel pipe cutting machine

Abstract

This utility model discloses a steel pipe cutting machine, including a pipe feeding device, a pipe clamping device, and a pipe cutting device. The pipe feeding device achieves synchronous feeding of two pipes via a slide table and a first intermediate block, with first clamping blocks and first cylinders on both sides for stable clamping. The pipe clamping device is correspondingly equipped with a second intermediate block, a second clamping block, and a second cylinder to ensure that both ends of the steel pipe are fixed during cutting. The pipe cutting device is driven by a rotating motor to complete the cutting. Each clamping part is equipped with an arc surface matching the steel pipe and rubber pads to improve clamping accuracy and protect the pipe surface. A motor screw mechanism achieves precise feeding, a hydraulic cylinder drives the cutter for stable feeding, and a coolant pipe is provided to reduce cutting temperature. The equipment also includes a material drop frame and a guide chute for automatic collection. This cutting machine, through synchronous clamping and feeding of two pipes and coordinated cutting, significantly improves production efficiency and processing accuracy, and is especially suitable for batch processing of steel pipes for sofa foot pads. It has advantages such as compact structure, high degree of automation, and safe operation.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe cutting technology, and in particular to a steel pipe cutting machine. Background Technology

[0002] In the production of sofa leg pads, steel pipes, as a crucial supporting material, need to be precisely cut to specific lengths to meet assembly requirements. Traditional steel pipe cutting equipment typically employs single-pipe feeding and single-sided clamping, which not only results in low processing efficiency but also easily leads to decreased cutting accuracy due to unstable clamping, affecting subsequent assembly quality. Furthermore, the feeding and cutting processes in existing cutting machines are not tightly integrated, further hindering improvements in production efficiency. To address the need for batch processing of steel pipes for sofa leg pads, there is an urgent need for automated equipment capable of simultaneous clamping and feeding of two pipes, precise positioning, and stable cutting, to solve the problems of low processing efficiency and insufficient precision control in existing technologies. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a steel pipe cutting machine, which significantly improves production efficiency and processing accuracy through synchronous clamping and feeding of double pipes and coordinated cutting. It is especially suitable for batch processing of steel pipes for sofa foot pads and has the advantages of compact structure, high degree of automation, and safe operation.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A steel pipe cutting machine, including The pipe feeding device includes a slide rail, a slide table, a first motion mechanism that drives the slide table to move along the slide rail, a first intermediate block provided on the slide table, first clamping blocks provided on both sides of the first intermediate block, and a first cylinder that drives the first clamping blocks to clamp the steel pipe to the first intermediate block. The pipe clamping device is located at the front end of the slide rail and includes a second intermediate block corresponding to the first intermediate block. The second intermediate block has second clamping blocks on both sides and a second cylinder that drives the second clamping blocks to clamp the steel pipe to the second intermediate block. The pipe cutting device, located between the first intermediate block and the second intermediate block, includes a cutter, a rotary motor that drives the cutter to rotate, and a second motion mechanism that drives the rotary motor to move.

[0005] According to an embodiment of the present invention, a steel pipe cutting machine has at least the following beneficial effects: During operation, firstly, the first cylinders on both sides drive the first clamping blocks to clamp two steel pipes to both sides of the first intermediate block. The first motion mechanism drives the slide table to move along the slide rail to send the two parallel steel pipes to the cutting station. The first cylinders on both sides of the pipe clamping device drive the first clamping blocks to clamp the front ends of the two steel pipes to both sides of the first intermediate block. At the same time, the first cylinder drives the first clamping blocks to release the steel pipes. The first motion mechanism drives the slide table to return to its original position along the slide rail. The first cylinder then drives the first clamping blocks to clamp the two steel pipes to both sides of the first intermediate block. The rotating motor of the pipe cutting device drives the cutter to rotate at high speed. The second motion mechanism pushes the cutter to complete the cutting. Then, the above process is repeated to achieve continuous operation.

[0006] By coordinating the pipe feeding device, pipe clamping device, and pipe cutting device, an integrated operation of simultaneous clamping, feeding, and cutting of two pipes is achieved. The pipe feeding device adopts a double-sided clamping structure of a slide table and a first intermediate block, driven by a first cylinder, ensuring the stability of the two steel pipes during transport, preventing deviation or loosening, and improving feeding accuracy. The pipe clamping device is located at the front end of the guide rail and adopts a second intermediate block and a second clamping block structure symmetrical to the pipe feeding device, ensuring that both ends of the steel pipe are firmly fixed during cutting, preventing deformation of the cut caused by vibration, and improving cutting quality. The pipe cutting device is located between the pipe feeding and clamping devices, driving the cutter with a rotating motor and combining it with the feed control of the second motion mechanism to achieve fast and precise cutting. The overall structure is compact and highly automated, significantly improving steel pipe cutting efficiency, especially suitable for the batch processing needs in sofa foot pad production, while ensuring the flatness and dimensional consistency of the cut surface, reducing subsequent assembly errors.

[0007] According to some embodiments of the present invention, a workbench is also included, and the tube feeding mechanism, the tube clamping mechanism and the tube cutting mechanism are all disposed on the workbench.

[0008] The advantages are: the workbench provides a stable installation foundation for each functional module, ensuring overall rigidity during pipe feeding, clamping, and cutting processes, reducing vibration interference, and facilitating the integrated layout and maintenance of the equipment.

[0009] According to some embodiments of the present invention, the first intermediate block has arc surfaces on both sides, the first clamping block near the first intermediate block, the second intermediate block has arc surfaces on both sides, and the second clamping block near the second intermediate block that cooperate with the side of the steel pipe.

[0010] The advantages are: the arc surface design allows for even distribution of clamping force, avoiding localized deformation of the steel pipe, while also enhancing the clamping fit, preventing slippage during feeding or cutting, and further improving processing accuracy.

[0011] According to some embodiments of this utility model, the arc surface is provided with a matching rubber gasket.

[0012] The benefits are: the rubber pad increases the friction between the clamp and the steel pipe, while buffering the clamping impact and protecting the steel pipe surface from scratches, making it especially suitable for sofa foot pads with high surface requirements.

[0013] According to some embodiments of the present invention, the first motion mechanism is a motor lead screw mechanism.

[0014] The advantages are: the motor screw mechanism has high transmission precision, can accurately control the feeding position of the slide table, ensure the accuracy of the steel pipe cutting length, and runs smoothly, making it suitable for high-speed continuous operation.

[0015] According to some embodiments of this utility model, the second motion mechanism is a hydraulic cylinder.

[0016] The advantages are: the hydraulic cylinder provides a stable driving force, ensuring that the cutter maintains a constant feed speed during the cutting process, which can meet the cutting needs of steel pipes with different wall thicknesses. At the same time, the structure is durable and easy to maintain.

[0017] According to some embodiments of the present invention, the pipe cutting device further includes a mounting base for mounting the hydraulic cylinder, which is used to drive the rotary motor to lift and lower.

[0018] The benefits are: the mounting base fixes the hydraulic cylinder, enhances the rigidity of the cutting device, prevents the motor from shaking during high-speed cutting, ensures the stability of the cutting trajectory, and improves the quality of the cut.

[0019] According to some embodiments of the present invention, the pipe cutting device further includes a coolant pipe, which is disposed toward the cutter.

[0020] The benefits are that the coolant pipe can cool and lubricate the cutting parts of the cutter and the steel pipe, reducing tool wear and burrs on the steel pipe cut caused by cutting heat, and extending the service life of the equipment.

[0021] According to some embodiments of the present invention, a material dropping frame is also included, which is disposed below the side of the pipe clamping device facing away from the pipe feeding device.

[0022] The benefits are: the material drop box automatically collects the cut steel pipe sections, avoiding the safety hazards of manual picking, while maintaining a clean working environment and improving continuous operation efficiency.

[0023] According to some embodiments of the present invention, the clamping device is provided with an inclined guide groove on the side near the material dropping frame.

[0024] The benefits are that the guide chute guides the cut steel pipe sections to slide into the dropping frame in an orderly manner, preventing the pipes from piling up or being damaged by collisions, and further optimizing the automated production process.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the cross-section between the central feed pipe device and the pipe clamping device; Figure 3 for Figure 1 A schematic diagram of one side of the clamping device.

[0028] Reference numerals: slide rail 100, slide table 110, first motion mechanism 120, first intermediate block 130, first clamping block 140, first cylinder 150, second intermediate block 160, second clamping block 170, second cylinder 180, cutter 190, rotating motor 200, second motion mechanism 210, worktable 220, arc surface 230, rubber pad 240, mounting base 250, coolant pipe 260, material drop frame 270, guide chute 280. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] The following is for reference. Figures 1-3 A steel pipe cutting machine is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0031] like Figures 1-3As shown, this application discloses a steel pipe cutting machine, including a pipe feeding device, a pipe clamping device, and a pipe cutting device. The pipe feeding device includes a slide rail 100, a slide table 110, a first motion mechanism 120 that drives the slide table 110 to move along the slide rail 100, a first intermediate block 130 provided on the slide table 110, first clamping blocks 140 provided on both sides of the first intermediate block 130, and a first cylinder 150 that drives the first clamping blocks 140 to press the steel pipe against the first intermediate block 130. The pipe clamping device is located at the front end of the slide rail 100 and includes a second intermediate block 160 corresponding to the first intermediate block 130, second clamping blocks 170 provided on both sides of the second intermediate block 160, and a second cylinder 180 that drives the second clamping blocks 170 to press the steel pipe against the second intermediate block 160. The pipe cutting device is located between the first intermediate block 130 and the second intermediate block 160, and includes a cutter 190, a rotary motor 200 that drives the cutter 190 to rotate, and a second motion mechanism 210 that drives the rotary motor 200 to move.

[0032] During operation, the first cylinders 150 on both sides drive the first clamping blocks 140 to clamp the two steel pipes to both sides of the first intermediate block 130. The first motion mechanism 120 drives the slide table 110 to move along the slide rail 100 to send the two parallel steel pipes to the cutting station. The first cylinders 150 on both sides of the pipe clamping device drive the first clamping blocks 140 to clamp the front ends of the two steel pipes to both sides of the first intermediate block 130. At the same time, the first cylinders 150 drive the first clamping blocks 140 to release the steel pipes. The first motion mechanism 120 drives the slide table 110 to return to its original position along the slide rail 100. The first cylinders 150 then drive the first clamping blocks 140 to clamp the two steel pipes to both sides of the first intermediate block 130. The rotating motor 200 of the pipe cutting device drives the cutter 190 to rotate at high speed. The second motion mechanism 210 pushes the cutter 190 to complete the cutting. Then, the above process is repeated to achieve continuous operation.

[0033] By coordinating the pipe feeding device, pipe clamping device, and pipe cutting device, an integrated operation of simultaneous clamping, feeding, and cutting of two pipes is achieved. The pipe feeding device adopts a double-sided clamping structure of a slide table 110 and a first intermediate block 130, driven by a first cylinder 150, ensuring the stability of the two steel pipes during transport, preventing deviation or loosening, and improving feeding accuracy. The pipe clamping device is located at the front end of the guide rail and adopts a structure symmetrical to the pipe feeding device, with a second intermediate block 160 and a second clamping block 170, ensuring that both ends of the steel pipe are firmly fixed during cutting, preventing deformation of the cut due to vibration, and improving cutting quality. The pipe cutting device is located between the pipe feeding and clamping devices, driving the cutter 190 through a rotating motor 200 and combining the feed control of the second motion mechanism 210 to achieve fast and precise cutting. The overall structure is compact and highly automated, significantly improving steel pipe cutting efficiency, especially suitable for batch processing needs in sofa foot pad production, while ensuring the flatness and dimensional consistency of the cut surface, reducing subsequent assembly errors.

[0034] Furthermore, this application proposes a structural scheme including a workbench 220, on which the pipe feeding mechanism, pipe clamping mechanism, and pipe cutting mechanism are all mounted. The workbench 220 can be made of cast iron or welded steel, with its surface precision-milled to ensure flatness, and adjustable anchor bolts at the bottom for leveling. The length of the workbench 220 is parallel to the extension direction of the slide rail 100, with sufficient space reserved at the front end for installing the pipe clamping device. This design balances equipment rigidity and layout flexibility, making it particularly suitable for production line configurations that process multiple specifications of steel pipes.

[0035] like Figure 2 and Figure 3 As shown, arc-shaped surfaces 230 that mate with the sides of the steel pipe are provided on both sides of the first intermediate block 130, on the side of the first clamping block 140 near the first intermediate block 130, on both sides of the second intermediate block 160, and on the side of the second clamping block 170 near the second intermediate block 160. Specifically, the arc-shaped surface 230 is formed by machining an arc-shaped groove on the surface of the clamping component that matches the outer diameter of the steel pipe. Its radius of curvature is slightly larger than the radius of the steel pipe to ensure maximum contact area. This technical solution effectively solves the problem of steel pipe rolling displacement caused by traditional planar clamping by setting an arc-shaped contact surface that matches the shape of the steel pipe. During pipe feeding and cutting, the arc-shaped surface 230 forms line contact with the steel pipe instead of point contact, making the clamping force distribution more uniform and avoiding steel pipe deformation caused by local stress concentration. At the same time, the increased contact area significantly improves clamping stability, ensuring that the steel pipe can maintain accurate positioning even under high-speed feeding and cutting vibration conditions.

[0036] Specifically, the arc surface 230 is equipped with a matching rubber pad 240. The rubber pad 240 is made of wear-resistant and elastic rubber material, with a thickness controlled within the range of 2-5mm. In practice, nitrile rubber or silicone rubber can be used, and it is fixed to the arc surface 230 by adhesive or snap-fit. The surface of the rubber pad 240 can be machined with anti-slip textures to enhance friction. This technical solution effectively solves the problem of indentation and relative slippage on the steel pipe surface during clamping by adding a rubber pad 240 to the clamping contact surface. The elastic deformation characteristics of the rubber material ensure the uniform distribution of clamping force and prevent axial movement of the steel pipe by increasing the coefficient of friction. Compared with the traditional direct metal clamping method, this design significantly reduces damage to the surface quality of the steel pipe while ensuring positioning accuracy.

[0037] It should be noted that the first motion mechanism 120 is a motor-screw mechanism. Specifically, the motor-screw mechanism consists of a servo motor, a coupling, a precision ball screw, and a linear guide. The servo motor is directly connected to the ball screw through the coupling, converting rotary motion into linear motion. Furthermore, a photoelectric limit switch can be installed at the end of the screw to set the travel range of the slide table 110. Thus, by using the motor-screw mechanism as the first motion mechanism 120, the high-precision speed control of the servo motor combined with the precision transmission of the ball screw can achieve accurate positioning and smooth movement of the slide table 110 in the pipe feeding device. Compared with the traditional cylinder-driven method, this structure has advantages such as adjustable movement speed, high positioning accuracy, and low operating noise, effectively solving the positioning deviation problem caused by unstable movement during steel pipe transportation. Specifically, the closed-loop control characteristics of the servo motor can correct position errors in real time, while the micro-feed capability of the ball screw ensures the precise positioning of the steel pipe before cutting, thereby guaranteeing the processing accuracy of subsequent cutting processes.

[0038] In addition, the second motion mechanism 210 is a hydraulic cylinder. The hydraulic cylinder drives the piston rod to move linearly via hydraulic oil, featuring high output force and smooth movement. As one implementation method, the stroke of the hydraulic cylinder can be customized according to the diameter of the steel pipe to ensure that the cutter 190 can completely cut the pipe. Therefore, using a hydraulic cylinder as the second motion mechanism 210 can provide sufficient driving force for the cutter 190, ensuring stable feed of the cutter head during the cutting process. Compared with traditional motor screw mechanisms, the hydraulic drive system has better impact resistance and can maintain a constant feed pressure when cutting steel pipes of different wall thicknesses.

[0039] like Figure 1 and Figure 2 As shown, the pipe cutting device also includes a mounting base 250, which is used to mount a hydraulic cylinder. The hydraulic cylinder drives the rotary motor 200 to lift and lower. The mounting base 250 can be a cast or welded metal base, and its bottom is fixed to the upper surface of the worktable 220 by bolts. The top of the mounting base 250 is provided with an annular positioning groove that matches the outer diameter of the hydraulic cylinder. The cylinder body of the hydraulic cylinder is bolted to the positioning groove through a flange. The end of the hydraulic cylinder piston rod is connected to the housing of the rotary motor 200 through a coupling. This technical solution achieves stable fixing of the hydraulic cylinder by adding a mounting base 250. The rigid support of the mounting base 250 can effectively absorb the vibration of the hydraulic cylinder during operation, avoiding positioning deviations caused by the hydraulic cylinder being directly mounted on the worktable 220. The hydraulic cylinder maintains a vertical movement trajectory through the mounting base 250, driving the rotary motor 200 to perform precise lifting and lowering movements, so that the cutter 190 can contact the steel pipe with constant pressure, solving the problem of cutter 190 swaying caused by unstable hydraulic cylinder installation in traditional cutting machines.

[0040] Understandably, the pipe cutting device also includes a coolant pipe 260, which is positioned towards the cutter 190. The coolant pipe 260 can be made of metal or plastic; specifically, stainless steel is preferred for metal, and polytetrafluoroethylene (PTFE) is preferred for plastic. The coolant pipe 260 is fixed to the pipe cutting device frame via clamps or threaded connectors, and its outlet direction can be adjusted to be vertical or inclined towards the cutting area of ​​the cutter 190. In a preferred embodiment, the coolant pipe 260 is connected to an external coolant supply system, which includes a reservoir, a filter, and a circulation pump. The coolant is either water-based or oil-based cutting fluid. This technical solution, by incorporating a directional cooling system at the cutter 190, effectively solves the problems of accelerated wear of the cutter 190 and decreased cutting surface quality caused by high temperatures during steel pipe cutting. The coolant acts directly on the cutting area, promptly removing cutting heat and lubricating the cutting surface, thereby extending the tool's lifespan while ensuring the smoothness of the cutting surface.

[0041] It is worth mentioning that, such as Figure 1 and Figure 3 As shown, it also includes a dropping frame 270, which is located below the side of the pipe clamping device facing away from the pipe feeding device. By setting up a directional dropping structure, automatic collection and orderly stacking of the cut steel pipes are achieved. After the pipe clamping device completes the cutting, the steel pipe slides into the dropping frame 270 along the guide chute 280 under the action of gravity, avoiding the safety hazards caused by manual picking. The positioning and installation of the dropping frame 270 allows the cutting and collection processes to be continuous, solving the problems of chip splashing and workpiece scattering in traditional equipment. Furthermore, the pipe clamping device has an inclined guide chute 280 on the side near the dropping frame 270. The specific angle of the inclined guide chute 280 can be adjusted according to actual production needs to ensure that the cut steel pipe can smoothly slide into the dropping frame 270. The guide chute 280 can be formed by bending metal sheet, and its surface can be polished to reduce frictional resistance. By incorporating an inclined guide chute 280 at the outlet of the pipe clamping device, the cut steel pipes can automatically slide into the discharge frame 270 along a predetermined trajectory, effectively solving the problem of low efficiency in manual material handling in traditional equipment. The inclined structure of the guide chute 280 avoids collision deformation caused by the free fall of the steel pipes, while ensuring the neatness of material discharge during continuous operation. Compared with directly using an open discharge port, this structure can precisely control the falling path of the steel pipes, prevent material accumulation and blockage, and significantly improve the automation level and safety of the production line.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A steel pipe cutting machine characterized by, include: The pipe feeding device includes a slide rail (100), a slide table (110), a first motion mechanism (120) that drives the slide table (110) to move along the slide rail (100), a first intermediate block (130) provided on the slide table (110), a first clamping block (140) provided on both sides of the first intermediate block (130), and a first cylinder (150) that drives the first clamping block (140) to clamp the steel pipe to the first intermediate block (130). The pipe clamping device is located at the front end of the slide rail (100) and includes a second intermediate block (160) corresponding to the first intermediate block (130). The second intermediate block (160) has second clamping blocks (170) on both sides and a second cylinder (180) that drives the second clamping blocks (170) to clamp the steel pipe to the second intermediate block (160). The pipe cutting device, located between the first intermediate block (130) and the second intermediate block (160), includes a cutter (190), a rotary motor (200) that drives the cutter (190) to rotate, and a second motion mechanism (210) that drives the rotary motor (200) to move.

2. A pipe cutting machine as claimed in claim 1, wherein It also includes a workbench (220), on which the pipe feeding device, the pipe clamping device and the pipe cutting device are all mounted.

3. A pipe cutting machine as claimed in claim 1, wherein Both sides of the first intermediate block (130), the side of the first clamping block (140) near the first intermediate block (130), both sides of the second intermediate block (160), and the side of the second clamping block (170) near the second intermediate block (160) are provided with arc surfaces (230) that cooperate with the side of the steel pipe.

4. A pipe cutting machine according to claim 3, wherein The arc surface (230) is provided with a matching rubber gasket (240).

5. A pipe cutting machine as claimed in claim 1, wherein, The first motion mechanism (120) is a motor lead screw mechanism.

6. A pipe cutting machine as claimed in claim 1, wherein, The second motion mechanism (210) is a hydraulic cylinder.

7. A pipe cutting machine according to claim 6, wherein The pipe cutting device also includes a mounting base (250) for mounting the hydraulic cylinder, which is used to drive the rotary motor (200) to lift.

8. A pipe cutting machine as claimed in claim 1, wherein, The pipe cutting device also includes a coolant pipe (260) which is positioned toward the cutter (190).

9. A pipe cutting machine as claimed in claim 1, wherein, It also includes a material drop frame (270), which is located below the side of the pipe clamping device facing away from the pipe feeding device.

10. A pipe cutting machine as claimed in claim 9, wherein, The clamping device is provided with an inclined guide groove (280) on the side near the dropping frame (270).

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