Pipe cutting machine

Abstract

The utility model belongs to the technical field of pipe machining, and particularly relates to a pipe cutting machine which comprises a machine frame, a platform, a cutting tool, two sets of axial positioning pieces, an end positioning piece and a clamping matching piece. A platform is arranged on the rack, a cutting tool capable of getting close to and getting away from the platform in the radial direction of the pipe is arranged on the rack, and a tool groove allowing the cutting tool to penetrate through is formed in the platform; the two groups of axial positioning pieces are arranged on the platform, are respectively positioned on two sides of the cutter groove, and can position the axial direction of the pipe; the end positioning piece is arranged on the side, away from the cutter groove, of the platform and can position the end of the pipe. The clamping matching piece can be matched with the axial positioning piece to clamp the pipe; compared with the prior art, the pipe cutting machine can conduct axial positioning and end positioning on the pipes before clamping the pipes, it is guaranteed that the axes of the pipes are perpendicular to the moving track of the cutting tool, and the pipes of the same batch can be rapidly positioned to the length needing to be cut during cutting.

Description

Technical Field

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

[0002] Tubing is widely used in lounge chairs, primarily for constructing the chair's frame and support structure. Using tubing in lounge chair construction not only provides robust and durable support but also allows for aesthetically pleasing designs.

[0003] When pipes are first manufactured, they are usually straight and long. During use, they need to be cut to specific lengths according to requirements. Traditional pipe cutting methods are relatively simple, consisting only of a platform to hold the pipe and a handheld cutting tool. During cutting, length measuring tools such as tape measures are used to measure and mark the cutting points on the pipe. The cutting tool then cuts the pipe at these marked points. This method has low precision and makes it difficult to guarantee the flatness of the cut pipe's end face. Later, some pipe cutting machines appeared, mounting the cutting tool on a platform that holds the pipe. The cutting tool then moves radially along the pipe to cut it. However, it was found that the pipe is prone to angular displacement during clamping, resulting in the cut pipe end face not being perpendicular to the length direction. Therefore, improvements to the existing pipe cutting methods are needed. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a pipe cutting machine. This pipe cutting machine can perform axial and end positioning of the pipe before clamping it, ensuring that the axis of the pipe is perpendicular to the movement trajectory of the cutting tool, and that the cutting of the same batch of pipes can be quickly positioned to the required cutting length.

[0005] In view of this, the present invention provides a pipe cutting machine, comprising:

[0006] A frame, on which a platform is provided, and on which cutting tools are provided that can move toward and away from the platform along the radial direction of the pipe; and on which a cutting groove is provided for the cutting tools to pass through.

[0007] Two sets of axial positioning components are set on the platform, with the two sets of axial positioning components located on both sides of the knife groove. The axial positioning components can position the pipe axially.

[0008] The end positioning component is located on the side of the platform away from the cutter groove. The end positioning component can position the end of the pipe to determine the cutting length of the pipe.

[0009] The clamping fitting is positioned above the two sets of axial positioning elements. The clamping fitting can move closer to and further away from the axial positioning elements in the vertical direction, thereby cooperating with the axial positioning elements to clamp the pipe.

[0010] In this technical solution, the pipe is placed on the axial positioning component and pushed axially towards the end positioning component, so that the end of the pipe is positioned by the end positioning component. At this time, the distance from the end positioning component to the cutter groove is the length of the pipe to be cut. Then, the clamping component is controlled to move closer to the pipe in the vertical direction. Finally, the clamping component and the axial positioning component cooperate to clamp the pipe. Then, the cutting tool is started and moved closer to the platform to cut the pipe. After the cutting is completed, the cutting tool moves away from the platform, and the clamping component is controlled to move away from the pipe in the vertical direction. The cut pipe is then removed, completing one cut.

[0011] In the above technical solution, each set of axial positioning components includes two fixing plates and two fixing rods. The two fixing plates are distributed at intervals along the length of the pipe on the platform, and the two fixing rods are distributed at intervals in the radial direction of the pipe. The axis of the fixing rods is parallel to the axis of the pipe, and the two fixing rods are fixed between the two fixing plates. The outer wall of the pipe can simultaneously fit against the outer peripheral wall of the two fixing rods.

[0012] In the above technical solution, the end positioning component further includes a positioning plate and two connecting rods. The positioning plate is mounted on the frame via the two connecting rods, and the end of the pipe can contact the positioning plate.

[0013] In the above technical solution, the two connecting rods can slide along the length of the pipe on the frame. The end positioning component also includes a threaded rod and a handwheel. The positioning plate is provided with a threaded hole parallel to the axis of the connecting rod. One end of the threaded rod is rotatably connected to the frame, and the other end of the threaded rod is threadedly connected to the threaded hole and passes through the threaded hole to connect with the handwheel.

[0014] In the above technical solution, the clamping assembly further includes a stand, a lifting mechanism, a connecting plate, and two clamping plates. The stand is mounted on the machine frame, the two clamping plates are located on both sides of the tool groove, the connecting plate connects the top of the two clamping plates, and the lifting mechanism is mounted on the stand to drive the connecting plate to move vertically up and down.

[0015] In the above technical solution, a guide rail is further provided on the frame along the radial direction of the pipe, a base is slidably connected on the guide rail, a push cylinder is provided on the frame to drive the base to slide on the guide rail, and the cutting tool is installed on the base.

[0016] In the above technical solution, furthermore, multiple sets of axial positioning components are distributed radially at intervals on both sides of the blade groove along the pipe, the clamping mating component covers each set of axial positioning components on the horizontal plane, and the end positioning component covers each set of axial positioning components on the horizontal plane.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting axial positioning components on the platform, the pipe can be positioned axially, ensuring that the pipe's axis is perpendicular to the movement trajectory of the cutting tool. This prevents angular displacement of the pipe during clamping, guaranteeing that the cut end face is perpendicular to the length direction. Furthermore, the end positioning components position the pipe's end to determine the cutting length. This eliminates the need to mark the cutting points of each pipe during the cutting of the same batch, improving the efficiency of pipe cutting.

[0019] 2. By designing the end positioning component as a positioning plate, two connecting rods, a threaded rod, a threaded hole, and a handwheel, when different batches of pipes need to be cut, the position of the positioning plate only needs to be adjusted according to the cutting length of the first pipe, so that subsequent pipe cuttings can meet the new length requirements, thus broadening the application range of the pipe cutting machine.

[0020] 3. By setting multiple sets of axial positioning components at intervals along the radial direction of the pipe, and the clamping components can simultaneously cooperate with these axial positioning components to clamp the corresponding pipes, and the end positioning components can simultaneously position the pipes on these axial positioning components, multiple pipes can be positioned and clamped at the same time. In one cutting stroke of the cutting tool, multiple pipes can be cut at the same time, which further improves the efficiency of pipe cutting. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in 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.

[0022] Figure 1 This is a three-dimensional structural diagram of the top left front side of this utility model.

[0023] Figure 2 This is a front view structural diagram of the present invention.

[0024] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0025] Figure 4 This is a three-dimensional structural diagram of the left rear bottom of this utility model.

[0026] Figure 5 This is a schematic diagram of the axial positioning component in this utility model.

[0027] Figure 6 This is a schematic diagram illustrating the simultaneous positioning of multiple pipes in this utility model.

[0028] Figure 7 This is a schematic diagram of the installation structure of the cutting tool in this utility model.

[0029] The markings in the diagram are as follows:

[0030] 1. Frame; 2. Platform; 201. Blade Groove; 3. Cutting Tool; 301. Circular Blade; 302. Tool Holder; 303. Motor; 304. Power Transmission Mechanism; 4. Axial Positioning Component; 401. Fixing Plate; 402. Fixing Rod; 5. End Positioning Component; 501. Positioning Plate; 5011. Threaded Hole; 502. Connecting Rod; 503. Threaded Rod; 504. Handwheel; 6. Clamping Fitting Component; 601. Stand; 602. Lifting Mechanism; 603. Connecting Plate; 604. Clamping Plate; 7. Guide Rail; 8. Base; 9. Pushing Cylinder; 100. Pipe. Detailed Implementation

[0031] 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.

[0032] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] Example 1

[0034] like Figures 1-7 As shown, this embodiment provides a pipe cutting machine, including: a frame 1, a platform 2, a cutting blade 3, two sets of axial positioning components 4, an end positioning component 5, and a clamping and mating component 6.

[0035] Please see Figure 1 The frame 1 is shaped like a U-shape. The bottom of the frame 1 has four support legs. A platform 2 is provided on the frame 1. A cutting tool 3 is provided on the frame 1 that can move towards and away from the platform 2 radially along the pipe 100. A tool groove 201 is provided on the platform 2 for the cutting tool 3 to pass through. The cutting tool 3 can be a combination of a cutting tool for cutting the pipe 100 and a power source for driving the cutting tool, which are in the prior art.

[0036] In this embodiment, please refer to Figure 7 The cutting tool 3 is installed below the platform 2. The cutting tool 3 includes a circular blade 301, a tool holder 302, a motor 303, and a power transmission mechanism 304. Specifically, the circular blade 301 extends upward from the surface of the platform 2 through the groove 201, so that the circular blade 301 can contact the pipe 100 on the platform 2 during the movement of the cutting tool 3, thereby cutting the pipe 100. The circular blade 301 is installed in the tool holder 302, and the center of the circular blade 301 extends to the outside of the tool holder 302 through a rotating shaft. The motor 303 is positioned opposite to the tool holder 302. The power transmission mechanism 304 is fixed and installed between the motor 303 and the tool holder 302. The input end of the power transmission mechanism 304 is connected to the output shaft of the motor 303, and the output end of the power transmission mechanism 304 is connected to the rotating shaft. When driven, the motor 303 starts and transmits power to the circular blade 301 through the power transmission mechanism 304, causing the circular blade 301 to rotate at high speed. In this way, the circular blade 301 can cut the pipe 100 when it comes into contact with the pipe 100. For example, the power transmission mechanism 304 can be selected from the existing belt drive structure or chain drive structure.

[0037] A horizontal drive mechanism is provided on the frame 1. The cutting tool 3 can move radially along the pipe 100 under the drive of the horizontal drive mechanism. The cutting tool 3 moves radially along the pipe 100 to the farthest point of the cut and then returns to the origin, which is one cutting stroke. In the prior art, any structure that can drive an object to move in a straight line in one direction and can be reset can be used as the horizontal drive mechanism in this embodiment.

[0038] In this embodiment, please refer to Figure 3 Two sets of axial positioning elements 4 are set on the platform 2. The two sets of axial positioning elements 4 are located on both sides of the knife groove 201. The axial positioning elements 4 can position the pipe 100 axially. The two sets of axial positioning elements 4 are distributed at intervals along the axial direction of the pipe 100. The two sets of axial positioning elements 4 can contact the pipe 100 at the same time and limit the horizontal radial displacement and horizontal angular deviation of the pipe 100. The structures in the prior art that can limit the horizontal radial displacement and horizontal angular deviation of the pipe 100 can all be used as the axial positioning elements 4 in this embodiment.

[0039] In this embodiment, please refer to Figure 3 The end positioning member 5 is located on the side of the platform 2 away from the cutter groove 201. The surface of the end positioning member 5 near the pipe 100 is flat, and the end of the pipe 100 can contact this flat surface to position the end of the pipe 100. The distance from this surface to the cutter groove 201 is the cutting length of the pipe 100, thus realizing the determination of the cutting length of the pipe 100 by the end positioning member 5. The position of the end positioning member 5 can be fixed, in which case the end positioning member 5 can only position a certain cutting length of the pipe 100. Alternatively, the end positioning member 5 can be designed to be adjustable in position relative to the platform 2 in the axial direction of the pipe 100, in which case the end positioning member 5 can position multiple cutting lengths of the pipe 100.

[0040] The clamping fitting 6 is positioned above the two sets of axial positioning elements 4. The clamping fitting 6 can move closer to and further away from the axial positioning elements 4 in the vertical direction, thereby engaging with the axial positioning elements 4 to clamp the pipe 100. Specifically, the clamping fitting 6 includes a support frame 601, a lifting mechanism 602, a connecting plate 603, and two clamping plates 604. Please refer to [link / reference needed]. Figure 1 The support frame 601 is mounted on the frame 1. The support frame 601 is generally inverted U-shaped, with its middle section located above the platform 2. Please refer to [link / reference]. Figure 3 Two clamping plates 604 are located on both sides of the tool groove 201. A connecting plate 603 is connected to the top of the two clamping plates 604. A lifting mechanism 602 is installed on the upright 601 to drive the connecting plate 603 to move vertically. During the process of the lifting mechanism 602 driving the connecting plate 603 to move, the connecting plate 603 will move together with the two clamping plates 604, thereby enabling the two clamping plates 604 to move closer to or further away from the axial positioning member 4.

[0041] In this embodiment, the lifting mechanism 602 can be manually driven by a worker, such as using a threaded structure to drive the connecting plate 603 to move vertically. Alternatively, the lifting mechanism 602 can be driven by pneumatic or hydraulic pressure, such as using a commercially available pneumatic cylinder in conjunction with an air supply device, or a commercially available hydraulic cylinder in conjunction with a liquid supply device. The pneumatic or hydraulic cylinder driving methods are well known to those skilled in the art and will not be described in detail here.

[0042] In this embodiment, when the pipe cutting machine is working, the pipe 100 is placed on the axial positioning member 4, and the pipe 100 is pushed axially towards the end positioning member 5, so that the end of the pipe 100 is positioned by the end positioning member 5. Then, the lifting mechanism 602 indirectly drives the two clamping plates 604 to approach the pipe 100 in the vertical direction. Finally, the two clamping plates 604 cooperate with the axial positioning member 4 to clamp the pipe 100. Then, the motor 303 is started to drive the circular blade 301 to rotate at high speed. The horizontal drive mechanism drives the cutting tool 3 to travel one cutting stroke to cut the pipe 100. After the cutting is completed, the lifting mechanism 602 indirectly drives the two clamping plates 604 to move away from the pipe 100 in the vertical direction. The worker removes the cut pipe 100, completing one cutting operation.

[0043] Example 2

[0044] Based on Embodiment 1, this embodiment also discloses a structure of the axial positioning component 4;

[0045] In this embodiment, please refer to Figure 5 Each set of axial positioning components 4 includes two fixing plates 401 and two fixing rods 402. The two fixing plates 401 are spaced apart on the platform 2 along the length of the pipe 100. The fixing plates 401 can be fixed to the platform 2 by fasteners. The two fixing rods 402 are spaced apart in the radial direction of the pipe 100. The fixing rods 402 are cylindrical rods with a certain length. The axis of the fixing rods 402 is parallel to the axis of the pipe 100. The two fixing rods 402 are fixed between the two fixing plates 401. The ends of the fixing rods 402 can be fixed to the fixing plates 401 by fasteners.

[0046] Please see Figure 2 When the pipe 100 is placed on the axial positioning component 4, the outer wall of the pipe 100 can simultaneously fit against the outer peripheral walls of the two fixing rods 402.

[0047] Example 3

[0048] Based on Embodiment 1, this embodiment also discloses a first structure of the end positioning member 5;

[0049] In this embodiment, the end positioning component 5 includes a positioning plate 501 and two connecting rods 502. The positioning plate 501 is mounted on the frame 1 through the two connecting rods 502, and the end of the tube 100 can contact the positioning plate 501.

[0050] In this embodiment, the distance between the positioning plate 501 and the platform 2 is fixed. One end of the connecting rod 502 can be fixedly connected to the positioning plate 501 by fasteners, and the other end of the connecting rod 502 can be fixedly connected to the frame 1 by fasteners.

[0051] Example 4

[0052] This embodiment discloses a second structure for the end positioning member 5. The difference from embodiment 3 is that the distance between the positioning plate 501 and the platform 2 is adjustable in this embodiment.

[0053] In this embodiment, please refer to Figure 4 Two connecting rods 502 can slide along the length of the tube 100 on the frame 1. The end positioning component 5 also includes a threaded rod 503 and a handwheel 504. The positioning plate 501 is provided with a threaded hole 5011 parallel to the axis of the connecting rod 502. One end of the threaded rod 503 is rotatably connected to the frame 1, and the other end of the threaded rod 503 is threadedly connected to the threaded hole 5011 and passes through the threaded hole 5011 to connect with the handwheel 504.

[0054] The worker can drive the positioning plate 501 to move axially along the threaded rod 503 by rotating the handwheel 504, thereby changing the distance between the positioning plate 501 and the platform 2. When the handwheel 504 is not rotated, the distance between the positioning plate 501 and the platform 2 can remain relatively stable. When adjusting the position of the positioning plate 501, the worker can use length measuring tools such as a tape measure to determine the position of the positioning plate 501. In the same batch of pipes 100, only the position of the positioning plate 501 needs to be adjusted for the cutting length of the first pipe 100, so that the subsequent pipes 100 can meet the new length requirements.

[0055] Example 5

[0056] Based on Embodiment 1, this embodiment also discloses a structure of a horizontal drive mechanism;

[0057] In this embodiment, please refer to Figure 7 A support frame is connected between adjacent support legs of the frame 1. An intermediate frame is set between two opposing support frames. A guide rail 7 is set on the intermediate frame. The guide rail 7 is set along the radial direction of the pipe 100. A base 8 is slidably connected to the guide rail 7. The base 8 can slide along the radial direction of the pipe 100 on the guide rail 7. A push cylinder 9 is set on one side of the guide rail 7 to drive the base 8 to slide on the guide rail 7. The push cylinder 9 can be a commercially available pneumatic cylinder driven by an air supply device, or a commercially available hydraulic cylinder driven by a liquid supply device.

[0058] Both the tool holder 302 and the motor 303 are mounted on the base 8. After the pipe 100 is positioned and clamped, the push cylinder 9 starts to drive the base 8 to slide on the guide rail 7, so that the cutting tool 3 can travel one or more cutting strokes.

[0059] Example 6

[0060] Based on Example 1, this embodiment further optimizes the structure of the pipe cutting machine;

[0061] In this embodiment, please refer to Figure 5 and Figure 6 , Figure 5 and Figure 6 The diagram shows the hidden clamping and mating parts 6 of the pipe cutting machine. On both sides of the blade groove 201, there are multiple sets of axial positioning parts 4 distributed radially along the pipe 100. The clamping and mating parts 6 cover each set of axial positioning parts 4 on the horizontal plane, and the end positioning parts 5 cover each set of axial positioning parts 4 on the horizontal plane.

[0062] In this way, when cutting a batch of pipes 100, multiple pipes 100 can be positioned and clamped at the same time. In one cutting stroke of the cutting tool 3, multiple pipes 100 can be cut at the same time, which further improves the efficiency of pipe cutting.

[0063] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A pipe cutting machine, characterized in that, include: A frame (1) is provided with a platform (2) and a cutting tool (3) is provided on the frame (1) that can approach and move away from the platform (2) radially along the pipe (100). The platform (2) is provided with a groove (201) through which the cutting tool (3) passes. Two sets of axial positioning components (4) are provided on the platform (2). The two sets of axial positioning components (4) are located on both sides of the knife groove (201). The axial positioning components (4) can position the pipe (100) axially. End positioning member (5), the end positioning member (5) is disposed on the side of the platform (2) away from the knife groove (201), the end positioning member (5) can position the end of the pipe (100) to determine the cutting length of the pipe (100); A clamping fitting (6) is disposed above the two sets of axial positioning fittings (4). The clamping fitting (6) can move closer to and further away from the axial positioning fittings (4) in the vertical direction, thereby cooperating with the axial positioning fittings (4) to clamp the pipe (100).

2. The pipe cutting machine according to claim 1, characterized in that: Each set of axial positioning components (4) includes two fixing plates (401) and two fixing rods (402). The two fixing plates (401) are distributed at intervals along the length of the pipe (100) on the platform (2). The two fixing rods (402) are distributed at intervals in the radial direction of the pipe (100). The axis of the fixing rod (402) is parallel to the axis of the pipe (100). The two fixing rods (402) are fixed between the two fixing plates (401). The outer wall of the pipe (100) can simultaneously fit against the outer peripheral wall of the two fixing rods (402).

3. The pipe cutting machine according to claim 1, characterized in that: The end positioning component (5) includes a positioning plate (501) and two connecting rods (502). The positioning plate (501) is mounted on the frame (1) via the two connecting rods (502), and the end of the tube (100) can contact the positioning plate (501).

4. The pipe cutting machine according to claim 3, characterized in that: The two connecting rods (502) can slide along the length of the tube (100) on the frame (1). The end positioning member (5) also includes a threaded rod (503) and a handwheel (504). The positioning plate (501) is provided with a threaded hole (5011) parallel to the axis of the connecting rod (502). One end of the threaded rod (503) is rotatably connected to the frame (1), and the other end of the threaded rod (503) is threadedly connected to the threaded hole (5011) and passes through the threaded hole (5011) to connect with the handwheel (504).

5. The pipe cutting machine according to claim 1, characterized in that: The clamping assembly (6) includes a stand (601), a lifting mechanism (602), a connecting plate (603), and two clamping plates (604). The stand (601) is mounted on the frame (1), and the two clamping plates (604) are located on both sides of the cutter groove (201). The connecting plate (603) is connected to the top of the two clamping plates (604). The lifting mechanism (602) is mounted on the stand (601) and is used to drive the connecting plate (603) to move vertically up and down.

6. The pipe cutting machine according to claim 1, characterized in that: The frame (1) is provided with a guide rail (7) along the radial direction of the pipe (100), and a base (8) is slidably connected to the guide rail (7). The frame (1) is provided with a push cylinder (9) that drives the base (8) to slide on the guide rail (7), and the cutting tool (3) is mounted on the base (8).

7. The pipe cutting machine according to claim 1, characterized in that: On both sides of the knife groove (201), there are multiple sets of axial positioning elements (4) distributed radially along the tube (100). The clamping fitting (6) covers each set of axial positioning elements (4) on the horizontal plane, and the end positioning element (5) covers each set of axial positioning elements (4) on the horizontal plane.

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