Pipe cutting machine

Abstract

The utility model is suitable for the technical field of pipe cutting, and provides a pipe cutting machine which comprises a rack, a chuck mechanism, a cutting head and a distance measuring sensor. A cutting station is formed on the rack. The chuck mechanism is installed on the machine frame, and a clamping area used for clamping the special-shaped pipe is formed on the chuck mechanism. The chuck mechanism is used for driving the special-shaped pipe to move to the cutting station and further used for driving the special-shaped pipe to rotate around the rotating axis, and the axis of the clamped special-shaped pipe coincides with the rotating axis. The cutting head is installed on the machine frame and used for machining the special-shaped pipe located on the cutting station. The distance measuring sensor is installed on the machine frame and is opposite to the cutting station. The height change of the peripheral face of the special-shaped pipe is detected through the distance measuring sensor so as to judge the position of the deformation structure on the special-shaped pipe, the angle of the special-shaped pipe does not need to be repeatedly adjusted, the special-shaped pipe can be positioned only by driving the special-shaped pipe to rotate around the rotating axis by one circle at most, the positioning process is simpler, and the machining effect is higher.

Description

Technical Field

[0001] The present application relates to the technical field of pipe cutting, and more specifically, to a pipe cutting machine. Background Art

[0002] A pipe cutter is a mechanical device used to cut pipes, primarily for cutting pipes (such as metal pipes and plastic pipes) to specific lengths. Some pipe cutters can be used not only to cut pipes but also to drill holes in them. To accurately locate the hole position when drilling special-shaped pipes, common pipe cutters are typically equipped with a visual positioning mechanism. This mechanism repeatedly photographs and compares the special-shaped pipe, repeatedly adjusting the angle of the pipe until the hole position is accurate. This positioning process is cumbersome and results in low processing efficiency. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a pipe cutting machine, aiming to solve the technical problems in the prior art of the pipe cutting machine in that the positioning process of the pipe is complicated and the processing efficiency is low.

[0004] To achieve the above objectives, the technical solution adopted in this application is to provide a pipe cutting machine, comprising:

[0005] A frame is formed with a cutting station;

[0006] A chuck mechanism is mounted on the frame, the chuck mechanism forming a clamping area for clamping the special-shaped pipe, the chuck mechanism is used to drive the special-shaped pipe to move to the cutting station, and is also used to drive the special-shaped pipe to rotate around a rotation axis, and the axis of the clamped special-shaped pipe coincides with the rotation axis;

[0007] A cutting head is mounted on the frame, and is used to process the special-shaped pipe located at the cutting station;

[0008] A distance measuring sensor is installed on the frame and opposite to the cutting station. The distance measuring sensor is used to detect the distance between itself and the outer peripheral surface of the special-shaped pipe located at the cutting station.

[0009] In a possible design, the distance measuring sensor and the cutting station are arranged relative to each other in a first direction, the cutting head and the cutting station are arranged relative to each other in a second direction, and the first direction and the second direction are arranged at a first angle;

[0010] A deformation structure extending along the rotation axis is formed on the outer circumferential surface of the special-shaped tube, and the special-shaped tube has at least one pre-processed position. The deformation structure and at least one pre-processed position are arranged at a first arc angle in the circumferential direction around the rotation axis, and the angle corresponding to the first arc angle is equal to the angle of the first included angle.

[0011] In a possible design, the distance measuring sensor and the cutting station are arranged relative to each other in a first direction, and the first direction is arranged at an angle to the extension direction of the rotation axis.

[0012] In a possible design, the pipe cutting machine further includes a slag removal mechanism, which is installed on the machine frame and is used to remove impurities generated during the process of the cutting head processing the special-shaped pipe.

[0013] In a possible design, the slag removal mechanism includes a transposition drive part, a mounting part, a first telescopic drive part, a second telescopic drive part, a first exhaust pipe and a second exhaust pipe, the transposition drive part is mounted on the frame, the mounting part is connected to the transposition drive part, the first telescopic drive part and the second telescopic drive part are sequentially mounted on the mounting part along a third direction, the third direction is arranged at an angle to the extension direction of the rotation axis, the first telescopic drive part is connected to the first exhaust pipe, and the second telescopic drive part is connected to the second exhaust pipe;

[0014] The transposition drive portion is used to drive the mounting portion to move along the third direction so that the first exhaust pipe or the second exhaust pipe is opposite to the cutting station in the extension direction of the rotation axis; the first telescopic drive portion is used to drive the first exhaust pipe along the rotation axis to approach or move away from the cutting station, and the second telescopic drive portion is used to drive the second exhaust pipe along the rotation axis to approach or move away from the cutting station.

[0015] In a possible design, the pipe cutting machine also includes a centering mechanism and a feeding mechanism, and the centering mechanism is formed with a receiving groove; the centering mechanism is slidably installed on the frame, and the feeding mechanism is installed next to the centering mechanism. The feeding mechanism is used to transport a single special-shaped pipe into the receiving groove, and the centering mechanism is configured to be able to slide relative to the frame so that the special-shaped pipe in the receiving groove is opposite to the clamping area in the extension direction of the rotation axis.

[0016] In a possible design, the opening of the accommodating groove faces upward, and the feeding mechanism includes a feeding frame, a feeding belt, and a sorting assembly. The feeding frame is installed next to the centering mechanism, and the feeding belt and the sorting assembly are installed on the feeding frame; the feeding frame is formed with a slope surface, and the slope surface is downwardly inclined from a side away from the centering mechanism to a side close to the centering mechanism;

[0017] The feeding belt is used to place multiple special-shaped pipes and transport the multiple special-shaped pipes to the sorting component. The sorting component is used to sort out a single special-shaped pipe from the multiple special-shaped pipes and roll the single special-shaped pipe into the accommodating tank via the slope surface.

[0018] In a possible design, the loading rack is equipped with a first material stopping cylinder and a second material stopping cylinder at intervals along the inclination direction of the slope surface. The output end of the first material stopping cylinder and the output end of the second material stopping cylinder can both move along a fourth direction and extend to the side of the slope surface away from the physical structure of the loading rack, and the fourth direction is set at an angle to the slope surface.

[0019] In a possible design, the frame is further provided with a positioning groove, and when the centering mechanism is in the initial position, the positioning groove and the accommodating groove are opposite to each other in the extension direction of the rotation axis; a guide inclined surface is formed on the side of the positioning groove close to the loading rack body, the guide inclined surface is opposite to the inclined surface, and the guide inclined surface is inclined downward from the side close to the inclined surface to the side of the groove body close to the positioning groove;

[0020] Alternatively, a guide slope is formed on one side of the accommodating groove close to the loading rack body, the guide slope is opposite to the slope surface, and the guide slope is inclined downward from the side close to the slope surface to the side of the trough body close to the accommodating groove.

[0021] In one possible design, the chuck mechanism includes a front chuck and a rear chuck installed on the frame at intervals along the rotation axis, and the front chuck is closer to the cutting station than the rear chuck; the front chuck is formed with a first channel, and the first channel is used for the special-shaped tube to pass through; the rear chuck is formed with the clamping area, and the rear chuck is configured to drive the special-shaped tube to move along the rotation axis and rotate around the rotation axis.

[0022] The pipe cutting machine provided by the present application has the following beneficial effects: compared with the prior art, the pipe cutting machine provided by the present application can be used to cut special-shaped pipes. Special-shaped pipes specifically refer to pipes with a deformation structure formed on the outer circumference (the deformation structure extends along the axial direction of the special-shaped pipe), and the height of the area on the outer circumference of the special-shaped pipe where the deformation structure is formed is different from the height of other areas on the outer circumference. The pipe cutting machine provided by the present application installs a distance sensor on the frame and positions the distance sensor opposite to the cutting station. After the chuck mechanism moves the special-shaped pipe to the cutting station, there is no need to repeatedly adjust the angle of the special-shaped pipe. At most, the special-shaped pipe only needs to be rotated around the rotation axis once. The distance sensor can detect the height change of the outer circumference of the special-shaped pipe, thereby quickly positioning the special-shaped pipe and effectively improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic diagram of the overall structure of a pipe cutting machine provided by an embodiment of the present application;

[0025] Figure 2 This is a partial structural diagram of a pipe cutting machine provided by an embodiment of the present application with the slag removal mechanism hidden;

[0026] Figure 3 This is a partial structural diagram of a pipe cutting machine provided by an embodiment of the present application, with the slag removal mechanism and the feeding mechanism hidden;

[0027] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point D in the middle;

[0028] Figure 5 This is a structural schematic diagram of a slag removal mechanism installed on a frame in a pipe cutting machine provided by an embodiment of the present application;

[0029] Figure 6 This is a structural diagram of a feeding mechanism in a pipe cutting machine provided in one embodiment of the present application;

[0030] Figure 7 yes Figure 3 A partial enlarged schematic diagram of point E in the middle;

[0031] Figure 8 yes Figure 2 A partial enlarged schematic diagram of point F in the middle;

[0032] Figure 9 yes Figure 1 A local enlarged schematic diagram of point G in the middle.

[0033] The reference numerals used in the above drawings are as follows:

[0034] 100, frame; 110, cutting station; 120, positioning groove; 121, guide slope;

[0035] 200, chuck mechanism; 210, front chuck; 220, rear chuck;

[0036] 300, cutting head;

[0037] 400, ranging sensor;

[0038] 500, slag removal mechanism; 510, transposition drive unit; 520, mounting unit; 530, first telescopic drive unit; 531, first exhaust pipe; 540, second telescopic drive unit; 541, second exhaust pipe;

[0039] 600, centering mechanism; 610, receiving groove;

[0040] 700, feeding mechanism; 710, feeding frame; 711, material storage area; 7111, first side surface; 7112, bottom surface; 7113, second side surface; 712, slope surface; 713, linear slide rail; 720, feeding belt; 730, sorting assembly; 731, first sorting drive unit; 732, second sorting drive unit; 7321, slider; 7322, scale; 7323, pointer; 733, third sorting drive unit; 734, material blocking unit; 7341, first material blocking surface; 7342, second material blocking surface; 740, first material blocking cylinder; 750, second material blocking cylinder. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0042] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0045] In order to illustrate the technical solution described in this application, the following is a detailed description with reference to specific drawings and embodiments.

[0046] like Figures 1 to 4 As shown, one embodiment of the present application provides a pipe cutting machine, comprising a frame 100, a chuck mechanism 200, a cutting head 300, and a distance sensor 400. The frame 100 is formed with a cutting station 110. The chuck mechanism 200 is mounted on the frame 100 and defines a clamping area for clamping a shaped pipe. The chuck mechanism 200 is used to move the shaped pipe to the cutting station 110 and also to rotate the shaped pipe about a rotation axis, with the axis of the clamped shaped pipe coinciding with the rotation axis. In other words, the chuck mechanism 200 is used to move the shaped pipe clamped in the clamping area to the cutting station 110 and also to rotate the shaped pipe fixed in the clamping area about the rotation axis, which is the axis of the shaped pipe in the clamping area. The cutting head 300 is mounted on the frame 100 and is used to process the shaped pipe located in the cutting station 110. The distance measuring sensor 400 is installed on the frame 100 and faces the cutting station 110 . The distance measuring sensor 400 is used to detect the distance between itself and the outer peripheral surface of the special-shaped pipe located at the cutting station 110 .

[0047] The pipe cutting machine provided in the embodiment of the present application can be used to cut special-shaped pipes. Special-shaped pipes specifically refer to pipes with a deformation structure formed on the outer circumference (the deformation structure extends along the axial direction of the special-shaped pipe). The distance between the area on the outer circumference of the special-shaped pipe where the deformation structure is formed and the ranging sensor 400 is different from the distance between other areas on the outer circumference and the ranging sensor 400. For example, the deformation structure can be a groove structure or a protrusion structure. When the deformation structure is a groove structure, the distance between the area on the outer circumference of the special-shaped pipe where the deformation structure is formed and the ranging sensor 400 is larger than that between other areas on the outer circumference. When the deformation structure is a protrusion structure, the distance between the area on the outer circumference of the special-shaped pipe where the deformation structure is formed and the ranging sensor 400 is smaller than that between other areas on the outer circumference.

[0048] In the embodiment of the present application, the cutting station 110 is specifically an area within the frame 100, within which at least a portion of the structure of the cutting head 300 is located. It can be understood that the cutting station 110 is specifically the area within the frame 100 where the cutting head 300 is located. In some embodiments, the cutting head 300 is used to process the special-shaped tubing located at the cutting station 110. Specifically, the cutting head 300 may be used to perform processes such as punching or grooving on the special-shaped tubing located at the cutting station 110. After the processing is completed, the special-shaped tubing is cut by the cutting head 300. Alternatively, the cutting head 300 may be a laser cutting head 300 or any other cutting head 300 that can be used to process special-shaped tubing, and this is not intended to be a limitation herein.

[0049] Optionally, the distance sensor 400 can be a laser distance sensor 400, an infrared distance sensor 400, or an ultrasonic distance sensor 400, etc., and is not limited here. The distance sensor 400 can detect the distance between the outer circumference of the special-shaped tube in the cutting station 110 and itself. In this way, after the chuck mechanism 200 moves the special-shaped tube to the cutting station 110, there is no need to repeatedly adjust the angle of the special-shaped tube. At most, the special-shaped tube only needs to be rotated once around the rotation axis. The distance sensor 400 can detect the height change of the outer circumference of the special-shaped tube, thereby quickly locating the position of the deformed structure on the special-shaped tube, that is, quickly positioning the special-shaped tube, effectively improving processing efficiency. Moreover, compared with the visual positioning mechanism in the related art, the distance sensor 400 used in the embodiment of the present application is more cost-effective.

[0050] In one possible design, see Figure 2 or Figure 3The chuck mechanism 200 includes a front chuck 210 and a rear chuck 220 installed on the frame 100 at intervals along the rotation axis. The front chuck 210 is closer to the cutting station 110 than the rear chuck 220. The front chuck 210 is formed with a first channel for allowing the special-shaped pipe to pass through. The rear chuck 220 is formed with a clamping area, and the rear chuck 220 is configured to drive the special-shaped pipe to move along the rotation axis and rotate around the rotation axis. It is worth noting that in this embodiment, the front chuck 210 and the rear chuck 220 are arranged at intervals. When the special-shaped pipe is clamped in the clamping area of ​​the rear chuck 220, the direction in which the front chuck 210 and the rear chuck 220 are arranged at intervals is parallel to the axis of the special-shaped pipe. The rear chuck 220 secures the end of the shaped tube away from the cutting station 110, while the front chuck 210 supports the end of the shaped tube near the cutting station 110, thereby smoothly transporting the shaped tube to the cutting station 110. Optionally, both the front chuck 210 and the rear chuck 220 are circular chucks, with the first through-hole formed in the center of the front chuck 210 and the clamping area formed in the center of the rear chuck 220. Optionally, the chuck mechanism 200 also includes a first linear drive module, by which the rear chuck 220 is slidably mounted on the frame 100 along the extension direction of the rotation axis, with the cutting station 110 located on the side of the front chuck 210 facing away from the rear chuck 220. Optionally, the first linear drive module may include a leadscrew-nut linear drive structure, a linear motor, a hydraulic cylinder, a pneumatic cylinder, or other structure capable of driving the rear chuck 220 to move linearly.

[0051] In one embodiment, the pipe cutting machine further includes a controller, which is signal-connected to the chuck mechanism 200, the cutting head 300, and the distance sensor 400. It is worth noting that in this embodiment of the present application, the signal connection can be achieved through a wireless communication module (e.g., a Bluetooth module or other wireless communication module) or a wired communication module via a direct data cable. The controller is used to control the operating state of the chuck mechanism 200, for example, controlling the chuck mechanism 200 to clamp the shaped pipe in the clamping area, controlling the chuck mechanism 200 to transport the shaped pipe to the cutting station 110, and controlling the chuck mechanism 200 to rotate the shaped pipe around the rotation axis. The distance sensor 400 is used to feed back the distance between itself and the outer circumference of the shaped pipe in the cutting station 110 to the controller in real time. When the distance information fed back by the distance sensor 400 changes, the controller is used to immediately control the chuck mechanism 200 to stop rotating or moving the shaped pipe, so that the deformed structure on the shaped pipe is located. The controller is also configured to, after the deformed structure of the shaped tube is positioned, control the chuck mechanism 200 to rotate the shaped tube about the rotation axis by a set angle, so that the pre-processed position on the shaped tube is aligned with the cutting head 300. It is understood that the pre-processed position is the location on the outer circumference of the shaped tube that is to be processed by the cutting head 300. The controller is also configured to control the cutting head 300 to process the pre-processed position on the shaped tube. Optionally, the controller may be a numerical control device or other structure capable of processing and analyzing data and controlling the operation of the chuck mechanism 200, cutting head 300, and other structures. Specifically, the controller is signal-connected to the first linear drive module and the rear chuck 220 in the chuck mechanism 200. By controlling the first linear drive module, the controller drives the rear chuck 220 in the chuck mechanism 200 to clamp the shaped tube and move the rear chuck 220 along the rotation axis, thereby driving the shaped tube along the rotation axis. Furthermore, by controlling the rear chuck 220 to rotate about the rotation axis, the shaped tube is rotated about the rotation axis.

[0052] During operation, the shaped tube is clamped on the chuck mechanism 200. The chuck mechanism 200 drives the shaped tube along its axial direction toward the cutting station 110, causing the pre-processed portion of the section to be cut to move to the cutting station 110. The chuck mechanism 200 then rotates the shaped tube about its rotation axis. When the distance information sent to the controller by the distance sensor 400 changes, the controller immediately stops the chuck mechanism 200. The controller then controls the chuck mechanism 200 to rotate the shaped tube about its rotation axis by a set angle, causing the pre-processed portion of the section to face the cutting head 300. The cutting head 300 then controls the pre-processed portion to be processed. After the cutting head 300 has processed the pre-processed portion of the section to be cut, the chuck mechanism 200 drives the tube along its rotation axis, causing the cut portion of the section to move to the cutting station 110. The cutting head 300 then severs the section from the shaped tube at the cut portion.

[0053] In one possible design, see Figure 4 The distance measuring sensor 400 is positioned opposite the cutting station 110 in a first direction, and the cutting head 300 is positioned opposite the cutting station 110 in a second direction, with the first and second directions forming a first angle. A deformation structure is formed on the outer circumferential surface of the shaped tube, and the shaped tube has at least one pre-processing location. The deformation structure and the at least one pre-processing location are arranged at a first arc angle in a circumferential direction about the rotation axis, and the angle corresponding to the first arc angle is equal to the first angle. This arrangement ensures that when the distance detected by the distance measuring sensor 400 (the distance between itself and the outer circumferential surface of the shaped tube at the cutting station 110) changes, that is, when the deformation structure on the outer circumferential surface of the shaped tube is aligned with the distance measuring sensor 400 in the first direction, the pre-processing location is aligned with the cutting head 300 in the second direction. At this point, the shaped tube can be processed by the cutting head 300 without further rotation of the shaped tube, thereby improving processing efficiency.

[0054] Optionally, the first angle can be 30 degrees, 45 degrees, 73 degrees, or 90 degrees, etc. The magnitude of the first angle can be determined based on the deformed structure of the special-shaped tube and the first arc angle of at least one pre-processing position in the circumferential direction around the rotation axis. When there is only one pre-processing position, after the distance detected by the distance measuring sensor 400 changes, the pre-processing position is processed by the cutting head 300, and then the chuck mechanism 200 drives the cut-off point of the special-shaped tube to be cut to the cutting station 110. The cutting head 300 then severs the section to be cut from the special-shaped tube at the cut-off point. When there are multiple pre-processing positions distributed on the outer circumference of the special-shaped pipe, specifically when there are multiple pre-processing positions distributed on the outer circumference of the section to be cut of the special-shaped pipe, after the distance detected by the ranging sensor 400 changes, the pre-processing position that is just opposite to the cutting head 300 in the second direction is the first pre-processing position, and the first pre-processing position is first processed by the cutting head 300, and then the chuck mechanism 200 drives the special-shaped pipe to move along the rotation axis or rotate around the rotation axis, so that the other pre-processing positions on the section to be cut are opposite to the cutting head 300 in turn, and the other pre-processing positions are processed in turn by the cutting head 300 until all the pre-processing positions on the section to be cut are processed, and finally the chuck mechanism 200 drives the cut-off point of the section to be cut in the special-shaped pipe to move to the cutting station 110, and then the cutting head 300 cuts the section to be cut from the special-shaped pipe from the cut-off point.

[0055] In one possible design, the distance measuring sensor 400 and the cutting station 110 are arranged relative to each other in a first direction, and the first direction is arranged at an angle to the extension direction of the rotation axis. Such an arrangement can effectively prevent the special-shaped tube from colliding with the distance measuring sensor 400 when the chuck mechanism 200 drives the special-shaped tube to move along the rotation axis. Optionally, the first direction and the extension direction of the rotation axis can be arranged at any angle, for example, the first direction is arranged perpendicular to the extension direction of the rotation axis. In one example, the extension direction of the rotation axis, the first direction, and the second direction are arranged perpendicular to each other. In the various drawings of the embodiments of the present application, the extension direction of the rotation axis is shown as the direction indicated by the arrow AA, the first direction is shown as the direction indicated by the arrow BB, and the second direction is shown as the direction indicated by the arrow CC.

[0056] In one possible design, Figure 1 and Figure 5 As shown, the pipe cutting machine also includes a slag removal mechanism 500, which is mounted on the frame 100 and is used to remove impurities generated during the processing of the special-shaped pipe by the cutting head 300. This configuration can reduce the contamination of the special-shaped pipe surface by impurities such as slag and dust generated by the cutting head 300 during the processing of the special-shaped pipe, thereby improving the surface finish of the special-shaped pipe.

[0057] In some optional embodiments, the slag removal mechanism 500 includes a third telescopic drive unit and a third exhaust pipe, the third exhaust pipe being in transmission connection with the third telescopic drive unit, and the third exhaust pipe being opposite the cutting station 110 in the direction of extension of the rotation axis. The third telescopic drive unit is signal-connected to a controller, and the controller is further configured to control the third telescopic drive unit to drive the third exhaust pipe to move along the direction of extension of the rotation axis, so that the third exhaust pipe approaches or moves away from the cutting station 110. The third exhaust pipe is connected to an exhaust device, which is configured to extract air from the inner cavity of the third exhaust pipe, so that the third exhaust pipe can extract impurities generated when the cutting head 300 processes special-shaped pipes. During operation, the controller first controls the third telescopic drive unit to drive the third exhaust pipe along the rotation axis to approach the cutting station 110, until the end of the third exhaust pipe away from the third telescopic drive unit is inserted into the section to be cut and moves to the cutting station 110, and then controls the cutting head 300 through the controller to process the section to be cut of the special-shaped pipe or cut the section to be cut at the cut portion, so as to extract impurities generated during the processing or cutting of the section to be cut of the special-shaped pipe through the third exhaust pipe. After the section to be cut into which the third exhaust pipe is inserted is cut off from the special-shaped pipe, the controller controls the third telescopic drive unit to drive the third exhaust pipe along the rotation axis away from the cutting station 110, so that the third exhaust pipe is removed from the cut section to be cut, and the cut section to be cut falls from the third exhaust pipe, thereby achieving unloading.

[0058] In one possible design, see Figure 5The slag removal mechanism 500 includes a transposition drive unit 510, a mounting unit 520, a first telescopic drive unit 530, a second telescopic drive unit 540, a first exhaust pipe 531, and a second exhaust pipe 541. The transposition drive unit 510 is mounted on the frame 100, and the mounting unit 520 is connected to the transposition drive unit 510. The first telescopic drive unit 530 and the second telescopic drive unit 540 are sequentially mounted on the mounting unit 520 along a third direction, which is arranged at an angle to the extension direction of the rotation axis. The first telescopic drive unit 530 is connected to the first exhaust pipe 531, and the second telescopic drive unit 540 is connected to the second exhaust pipe 541. The transposition drive unit 510 is used to drive the mounting unit 520 to move along the third direction so that the first exhaust pipe 531 or the second exhaust pipe 541 is opposite to the cutting station 110 in the extension direction of the rotation axis. The first telescopic drive unit 530 is used to drive the first exhaust pipe 531 along the rotation axis toward or away from the cutting station 110, and the second telescopic drive unit 540 is used to drive the second exhaust pipe 541 along the rotation axis toward or away from the cutting station 110. Optionally, the transposition drive unit 510, the first telescopic drive unit 530, and the second telescopic drive unit 540 are all connected to the controller signal, and the controller controls the transposition drive unit 510 to drive the mounting portion 520 to move along the third direction, controls the first telescopic drive unit 530 to drive the first exhaust pipe 531 to move along the rotation axis, and controls the second telescopic drive unit 540 to drive the second exhaust pipe 541 to move along the rotation axis.

[0059] The third direction can be set at any angle to the extension direction of the rotation axis. Optionally, the third direction can be set perpendicular to the extension direction of the rotation axis. In this embodiment, the third direction can be the same as the first direction or the second direction, or the third direction can be set at an angle to the first direction and the second direction respectively, without being limited here.

[0060] In the embodiment of the present application, both the first exhaust duct 531 and the second exhaust duct 541 are used to extract impurities (such as slag or dust) dropped during the processing of the special-shaped pipe by the cutting head 300. For example, the first exhaust duct 531 and the second exhaust duct 541 are both connected to an exhaust device, which can be a structure included in the slag removal mechanism 500 or a separately connected external exhaust device, and is not limited to this. The exhaust device is used to extract air from the inner lumens of the first exhaust duct 531 and the second exhaust duct 541, so that a negative pressure is formed in the inner lumens of the first exhaust duct 531 and the second exhaust duct 541. When the first exhaust pipe 531 is opposite to the cutting station 110 in the extension direction of the rotation axis and moves to the cutting station 110 along the rotation axis, the first exhaust pipe 531 is inserted into the section of the special-shaped pipe to be cut, and the impurities dropped during the processing of the special-shaped pipe are extracted through the first exhaust pipe 531; when the second exhaust pipe 541 is opposite to the cutting station 110 in the extension direction of the rotation axis and moves to the cutting station 110 along the rotation axis, the second exhaust pipe 541 is inserted into the section of the special-shaped pipe to be cut, and the impurities dropped during the processing of the special-shaped pipe are extracted through the second exhaust pipe 541.

[0061] According to the above technical solution, during the working process, the mounting portion 520 can be driven to move forward along the third direction by the transposition drive portion 510, so that the first exhaust pipe 531 is opposite to the cutting station 110 in the extension direction of the rotation axis, and then the first exhaust pipe 531 is driven by the first telescopic drive portion 530 to move to the cutting station 110 along the extension direction of the rotation axis, and the impurities dropped when the cutting head 300 punches or cuts the to-be-cut section of the special-shaped pipe are extracted through the first exhaust pipe 531 to prevent the impurities from contaminating the inner wall surface of the special-shaped pipe; when the first exhaust pipe 531 is After the inserted section to be cut is cut off from the special-shaped pipe, the transposition drive unit 510 drives the mounting unit 520 to move in the opposite direction along the third direction, so that the second exhaust pipe 541 is opposite to the cutting station 110 in the extension direction of the rotation axis, and the second telescopic drive unit 540 drives the second exhaust pipe 541 to move to the side close to the cutting station 110 along the extension direction of the rotation axis to the cutting station 110, and extracts impurities dropped when the cutting head 300 punches or cuts the section to be cut of the special-shaped pipe through the second exhaust pipe 541 to prevent impurities from contaminating the inner wall surface of the special-shaped pipe. When the second exhaust pipe 541 is opposite to the cutting station 110 in the direction of the rotation axis and moves toward the cutting station 110, or when the second exhaust pipe 541 is extracting impurities from the cutting station 110, the first exhaust pipe 531 can be driven by the first telescopic drive unit 530 to move away from the cutting station 110 in the direction of the rotation axis, so that the first exhaust pipe 531 is extracted from the cut section to be cut, and the cut section falls from the first exhaust pipe 531 to achieve unloading, and vice versa. In this way, not only can the smoothness of the inner wall of the special-shaped pipe be maintained, but also unloading time can be saved and work efficiency can be improved.

[0062] In one possible design, Figure 2 、 Figures 6 to 8 As shown, the pipe cutting machine further includes a centering mechanism 600 and a feeding mechanism 700. The centering mechanism 600 is formed with a receiving groove 610. The centering mechanism 600 is slidably mounted on the frame 100, and the feeding mechanism 700 is mounted adjacent to the centering mechanism 600. The feeding mechanism 700 is used to deliver a single irregularly shaped pipe into the receiving groove 610. The centering mechanism 600 is configured to slide relative to the frame 100 so that the irregularly shaped pipe in the receiving groove 610 is aligned with the clamping area in the direction of the rotation axis. It will be understood that in this embodiment, the feeding mechanism 700 is also mounted on the frame 100 and is located adjacent to the centering mechanism 600. In this embodiment, a plurality of special-shaped tubes are sorted by the loading mechanism 700, so that individual special-shaped tubes are sequentially conveyed into the accommodating groove 610, and then the special-shaped tubes are conveyed to the chuck mechanism 200 by the centering mechanism 600, thereby realizing automatic loading and achieving a higher degree of automation.

[0063] Optionally, the centering mechanism 600 can be slidably mounted on the frame 100 in any direction. Optionally, the frame 100 further includes a second linear drive module, through which the centering mechanism 600 is slidably mounted on the frame 100. The second linear drive module and the loading mechanism 700 are each connected to a controller signal. After the shaped tube in the chuck mechanism 200 is processed, the controller controls the loading mechanism 700 to transport the single shaped tube into the receiving groove 610. The controller then controls the second linear drive module to drive the centering mechanism 600 to move in a predetermined direction and a predetermined distance, so that the shaped tube in the receiving groove 610 and the clamping area are arranged relative to each other along the extension direction of their own axes. The controller then controls the first linear drive module to drive the rear chuck 220 along the rotation axis to approach the shaped tube until the end of the shaped tube away from the cutting station 110 extends into the clamping area. The controller then controls the rear chuck 220 to clamp the shaped tube. The preset direction is set at an angle to the axis of the special-shaped pipe in the receiving groove 610, and the angle is specifically 30 degrees, 73 degrees or 90 degrees. Optionally, the preset direction can be set parallel to the first direction or the second direction. In one example, when the centering mechanism 600 is in the initial position, the centering mechanism 600 is located directly below the chuck mechanism 200, and the centering mechanism 600 is specifically installed on the frame 100 by sliding in the vertical direction through the second linear drive module. The second linear drive module can have the same structure as the first linear drive module, and will not be repeated here. It is worth noting that the centering mechanism 600 has an initial position and a centering position. The centering mechanism 600 can slide between the initial position and the centering position relative to the frame 100. The loading mechanism 700 is specifically used to transport a single special-shaped pipe to the receiving groove 610 of the centering mechanism 600 in the initial position. When the centering mechanism 600 is in the centering position, the special-shaped pipe in the receiving groove 610 is opposite to the clamping area in the extension direction of the rotation axis.

[0064] Optionally, the feeding mechanism 700 may include a robot or other structure capable of sorting multiple special-shaped pipes into single pieces. In one possible design, Figure 7 and Figure 8 As shown, the opening of the receiving tank 610 faces upward. The feeding mechanism 700 includes a feeding frame 710, a feeding belt 720, and a sorting assembly 730. The feeding frame 710 is mounted adjacent to the centering mechanism 600, while the feeding belt 720 and the sorting assembly 730 are mounted on the feeding frame 710. The feeding frame 710 is formed with a slope 712 that slopes downward from the side away from the centering mechanism 600 to the side closer to the centering mechanism 600. The feeding belt 720 is used to place multiple special-shaped tubes and transport them to the sorting assembly 730. The sorting assembly 730 is used to sort a single special-shaped tube from the multiple special-shaped tubes and roll the single special-shaped tube along the slope 712 into the receiving tank 610.

[0065] like Figure 8 As shown, the loading frame 710 has a storage area 711 for storing special-shaped pipes. The storage area 711 comprises a bottom surface 7112, a first side surface 7111, and a second side surface 7113. The first and second side surfaces 7111, 7113 are spaced apart in a horizontal direction perpendicular to the rotation axis, with the bottom surface 7112 positioned between the first and second side surfaces 7111, 7113. The bottom surface 7112, first and second side surfaces 7111, 7113 enclose the storage area 711. In this embodiment, the first side surface 7111 is angled with and engages with the sloped surface 712. A feeding belt 720 is mounted on one side of the loading frame 710 in the direction of the rotation axis, with at least a portion of the feeding belt 720 facing the storage area 711 in the direction of the rotation axis. The feeding belt 720 is connected to a feeding drive unit, which may be a motor or other drive structure. The feeding drive unit is used to tighten the feeding belt 720 or loosen the feeding belt 720. When the feeding drive unit tightens the feeding belt 720, the lowest point of the feeding belt 720 is lifted, thereby lifting the special-shaped pipes in the storage area 711 to the sorting component 730 through the feeding belt 720. The sorting component 730 sorts out a single special-shaped pipe from multiple special-shaped pipes, so that the sorted special-shaped pipe can roll along the slope surface 712 into the accommodating tank 610.

[0066] In some embodiments, as Figure 6 As shown, the feeding mechanism 700 includes multiple feeding frames 710, multiple feeding belts 720, and multiple sorting assemblies 730. The multiple feeding frames 710 are spaced apart along the extension direction of the rotation axis. The multiple feeding belts 720 are arranged in a one-to-one correspondence with the multiple feeding frames 710, and the multiple sorting assemblies 730 are also arranged in a one-to-one correspondence with the multiple feeding frames 710. Each feeding frame 710 is respectively equipped with a corresponding feeding belt 720 and sorting assembly 730 on opposite sides of the rotation axis. In this way, the feeding mechanism 700 can smoothly transport the special-shaped pipes into the receiving tank 610.

[0067] In one example, Figure 8 and Figure 9As shown, the sorting assembly 730 is mounted on the side of the loading frame 710 that is away from the loading belt 720 in the direction of the rotation axis. The sorting assembly 730 includes a first sorting drive unit 731, a second sorting drive unit 732, a third sorting drive unit 733, and a material blocking unit 734. The first sorting drive unit 731 is mounted on the side of the loading frame 710 that is away from the loading belt 720 in the direction of the rotation axis. The second sorting drive unit 732 is connected to the output end of the first sorting drive unit 731, the third sorting drive unit 733 is connected to the output end of the second sorting drive unit 732, and the material blocking unit 734 is connected to the output end of the third sorting drive unit 733. The material stopper 734 has a first material stopper surface 7341 and a second material stopper surface 7342. The first material stopper surface 7341 is located on the side of the material stopper 734 facing the material storage area 711 and is parallel to the first side surface 7111. The second material stopper surface 7342 is parallel to the sloped surface 712 and is connected to the lower side of the first material stopper surface 7341. The first sorting drive unit 731 is used to drive the second sorting drive unit 732 to reciprocate in a direction perpendicular to the first side surface 7111. The second sorting drive unit 732 is used to drive the third sorting drive unit 733 to move in a direction perpendicular to the sloped surface 712. The third sorting drive unit 733 is used to drive the material stopper 734 to reciprocate in a direction perpendicular to the first side surface 7111.

[0068] According to the above embodiment, the first sorting drive unit 731 can drive the second sorting drive unit 732 to reciprocate in a direction perpendicular to the first side surface 7111, so that the third sorting drive unit 733 connected to the output end of the second sorting drive unit 732 and the material blocking unit 734 connected to the output end of the third sorting drive unit 733 can reciprocate in a direction perpendicular to the first side surface 7111 to adjust the maximum distance between the material blocking unit 734 and the first side surface 7111. The maximum distance between the material blocking unit 734 and the first side surface 7111 is specifically the distance between the first material blocking surface 7341 and the first side surface 7111 when the output end of the third sorting drive unit 733 drives the material blocking unit 734 to move in a direction perpendicular to the first side surface 7111 away from the material storage area 711 to an extreme position (a position where it cannot continue to move in a direction perpendicular to the first side surface 7111 away from the material storage area 711). The third sorting drive unit 733 is driven by the second sorting drive unit 732 to move back and forth in a direction perpendicular to the slope surface 712, so that the blocking unit 734 connected to the output end of the third sorting drive unit 733 moves back and forth in a direction perpendicular to the slope surface 712, so that at least part of the structure of the blocking unit 734 can be moved to the side of the slope surface 712 away from the physical structure of the loading rack body 710, and the blocking unit 734 is used to block the special-shaped pipe from rolling downward along the slope surface 712; or, the blocking unit 734 is moved to the side of the slope surface 712 facing the physical structure of the loading rack body 710, so that the special-shaped pipe blocked by the blocking unit 734 can roll downward along the slope surface 712. The material blocking portion 734 is driven by the third sorting drive portion 733 to move back and forth in a direction perpendicular to the first side surface 7111, so that the material blocking portion 734 can move to the side of the first side surface 7111 facing the material storage area 711, or move to the side of the first side surface 7111 away from the material storage area 711.

[0069] During the sorting process, the first sorting drive unit 731 ensures that the maximum distance between the first blocking surface 7341 and the first side surface 7111 is equal to the outer diameter of the special-shaped pipe. This allows the third sorting drive unit 733 to drive the blocking surface 734 to move perpendicularly to the first side surface 7111 away from the storage area 711 to its limit position. The area between the first blocking surface 7341 and the sloped surface 712 can only store one special-shaped pipe. The second sorting drive unit 732 then moves the blocking surface 734 to the side away from the sloped surface 712, aligning the second blocking surface 7342 with the sloped surface 712. The third sorting drive unit 733 then drives the blocking surface 734 to move perpendicularly to the first side surface 7111 toward the storage area 711, moving at least part of the blocking surface 734 to the side of the first side surface 7111 facing the storage area 711. After that, the feeding drive unit tightens the feeding belt 720 so that the feeding belt 720 lifts the special-shaped tube in the storage area 711 upward until the special-shaped tube contacts the second blocking surface 7342 of the blocking portion 734. Finally, the third sorting drive unit 733 drives the blocking portion 734 to move away from the storage area 711 in a direction perpendicular to the first side surface 7111 to the limit position, and then the feeding drive unit tightens the feeding belt 720 again to make the storage area 711 closest to the slope surface 712. The special-shaped pipe moves to the first blocking surface 7341. Since only one special-shaped pipe can be stored in the area sandwiched between the first blocking surface 7341 and the sloped surface 712 at this time, when the feeding drive part relaxes the feeding belt 720, only one special-shaped pipe can be stored in the area sandwiched between the first unloading surface and the sloped surface 712, and the other special-shaped pipes will roll downward along the first side surface 7111. In this way, the sorting component 730 can realize the function of sorting out a single special-shaped pipe from multiple special-shaped pipes.

[0070] Alternatively, the first sorting drive unit 731 may include a screw-nut linear drive structure, a linear motor, a hydraulic cylinder, a pneumatic cylinder, or other linear drive structures. Alternatively, the second sorting drive unit 732 and the third sorting drive unit 733 may include a linear motor, a pneumatic cylinder, or other linear drive structures.

[0071] Alternatively, as Figure 9As shown, the second sorting drive unit 732 is connected to a slider 7321. The loading rack 710 is provided with a linear slide 713 extending perpendicularly to the first side 7111. The slider 7321 is slidably mounted on the linear slide 713. One of the slider 7321 and the loading rack 710 is provided with a scale 7322 extending perpendicularly to the first side 7111. The other is provided with a pointer 7323 that points to a graduated area on the scale 7322. When the first sorting drive unit 731 drives the second sorting drive unit 732 in a direction perpendicular to the first side 7111, the pointer 7323 moves relative to the scale 7322. The value indicated by the pointer 7323 on the scale 7322 corresponds to the maximum distance between the first stop surface 7341 and the first side 7111. This allows the operator to quickly adjust the maximum distance between the first stop surface 7341 and the first side 7111.

[0072] Optionally, the sorting component 730 may also adopt the same structure as that used for sorting pipes in the pipe cutting machine in the prior art to sort special-shaped pipes, which is not limited here.

[0073] In one possible design, Figure 8As shown, the loading rack 710 is installed with a first stop cylinder 740 and a second stop cylinder 750 at intervals along the inclined direction of the sloped surface 712. The output end of the first stop cylinder 740 and the output end of the second stop cylinder 750 are both capable of moving along a fourth direction and extending to the side of the sloped surface 712 away from the physical structure of the loading rack 710, and the fourth direction is arranged at an angle to the sloped surface 712. In this embodiment, the first stop cylinder 740 is farther away from the sorting assembly 730 than the second stop cylinder 750, and the sorting assembly 730 is closer to the storage area 711 of the loading rack 710 than the second stop cylinder 750. Optionally, the fourth direction can be arranged at any angle to the sloped surface 712. In one example, the fourth direction is specifically arranged perpendicular to the sloped surface 712. With such an arrangement, a single special-shaped tube can be sorted out from multiple special-shaped tubes by the sorting component 730 first, and then the output end of the first stopping cylinder 740 is moved to the side where the slope surface 712 is away from the physical structure of the loading rack 710, and the output end of the second stopping cylinder 750 is moved to the side flush with the slope surface 712 or the slope surface 712 is close to the physical structure of the loading rack 710. The sorted special-shaped tube rolls along the slope surface 712 to the output end of the first stopping cylinder 740, and then the output end of the second stopping cylinder 750 is moved to the side where the slope surface 712 is away from the physical structure of the loading rack 710. In this way, the sorted special-shaped pipes can be first stored between the first material-blocking cylinder 740 and the second material-blocking cylinder 750, so that when the special-shaped pipes in the chuck mechanism 200 are processed, or when the special-shaped pipes in the receiving groove 610 are clamped in the clamping area and the centering mechanism 600 moves to the initial position, the output end of the first material-blocking cylinder 740 is moved to the side flush with the slope surface 712 or the slope surface 712 is close to the physical structure of the loading rack 710, so that the special-shaped pipes can be quickly rolled into the receiving groove 610 along the slope surface 712, so that after the special-shaped pipes in the chuck mechanism 200 are processed, the centering mechanism 600 can promptly transport the special-shaped pipes to a position opposite to the clamping area on the rotation axis, thereby increasing the loading rate.

[0074] In one possible design, Figure 7 and Figure 8 As shown, the frame 100 is further provided with a positioning slot 120. When the centering mechanism 600 is in the initial position, the positioning slot 120 and the receiving slot 610 are opposite each other in the direction of the rotation axis. A guide slope 121 is formed on the side of the positioning slot 120 near the loading rack body 710. The guide slope 121 is opposite the sloped surface 712 and slopes downward from the side near the sloped surface 712 to the side near the slot body of the positioning slot 120.

[0075] Alternatively, in another possible design, a guide slope 121 is formed on the side of the accommodating groove 610 close to the loading rack body 710, the guide slope 121 is opposite to the slope surface 712, and the guide slope 121 is inclined downward from the side close to the slope surface 712 to the side of the groove body close to the accommodating groove 610.

[0076] In the embodiment of the present application, whether by setting a positioning groove 120 and setting the side of the positioning groove 120 close to the loading rack 710 as a guide slope 121, or directly forming the guide slope 121 on the side of the receiving groove 610 close to the loading rack 710, it is beneficial for the special-shaped pipe to roll along the slope surface 712 and the guide slope 121 into the receiving groove 610 in turn, thereby improving the reliability of the pipe cutting machine.

[0077] Optionally, there are one or more receiving grooves 610. When there is only one receiving groove 610, it is a strip-shaped groove, with its length parallel to the axis of rotation. When there are multiple receiving grooves 610, the multiple receiving grooves 610 are spaced apart along the axis of rotation. This allows the centering mechanism 600 to stably transport the irregularly shaped pipe.

[0078] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A pipe cutting machine, characterized in that: include: A frame is formed with a cutting station; A chuck mechanism is mounted on the frame, the chuck mechanism forming a clamping area for clamping the special-shaped pipe, the chuck mechanism is used to drive the special-shaped pipe to move to the cutting station, and is also used to drive the special-shaped pipe to rotate around a rotation axis, and the axis of the clamped special-shaped pipe coincides with the rotation axis; A cutting head is mounted on the frame, and is used to process the special-shaped pipe located at the cutting station; A distance measuring sensor is installed on the frame and opposite to the cutting station. The distance measuring sensor is used to detect the distance between itself and the outer peripheral surface of the special-shaped pipe located at the cutting station.

2. The pipe cutting machine according to claim 1, wherein: The distance measuring sensor and the cutting station are arranged opposite to each other in a first direction, the cutting head and the cutting station are arranged opposite to each other in a second direction, and the first direction and the second direction form a first angle; A deformation structure extending along the rotation axis is formed on the outer circumferential surface of the special-shaped tube, and the special-shaped tube has at least one pre-processed position. The deformation structure and at least one pre-processed position are arranged at a first arc angle in the circumferential direction around the rotation axis, and the angle corresponding to the first arc angle is equal to the angle of the first included angle.

3. The pipe cutting machine according to claim 1, wherein: The distance measuring sensor and the cutting station are arranged opposite to each other in a first direction, and the first direction forms an angle with the extending direction of the rotation axis.

4. The pipe cutting machine according to claim 1, wherein: The pipe cutting machine further includes a slag removal mechanism, which is mounted on the machine frame and is used to remove impurities generated during the process of the cutting head processing the special-shaped pipe.

5. The pipe cutting machine according to claim 4, characterized in that The slag removal mechanism includes a transposition drive portion, a mounting portion, a first telescopic drive portion, a second telescopic drive portion, a first exhaust pipe, and a second exhaust pipe, wherein the transposition drive portion is mounted on the frame, the mounting portion is connected to the transposition drive portion, the first telescopic drive portion and the second telescopic drive portion are sequentially mounted on the mounting portion along a third direction, the third direction is arranged at an angle to the extension direction of the rotation axis, the first telescopic drive portion is connected to the first exhaust pipe, and the second telescopic drive portion is connected to the second exhaust pipe; The transposition drive portion is used to drive the mounting portion to move along the third direction so that the first exhaust pipe or the second exhaust pipe is opposite to the cutting station in the extension direction of the rotation axis; the first telescopic drive portion is used to drive the first exhaust pipe along the rotation axis to approach or move away from the cutting station, and the second telescopic drive portion is used to drive the second exhaust pipe along the rotation axis to approach or move away from the cutting station.

6. The pipe cutting machine according to any one of claims 1 to 5, characterized in that: The pipe cutting machine also includes a centering mechanism and a feeding mechanism, wherein the centering mechanism is formed with a receiving groove; the centering mechanism is slidably mounted on the frame, and the feeding mechanism is mounted next to the centering mechanism, and the feeding mechanism is used to transport a single special-shaped pipe into the receiving groove, and the centering mechanism is configured to be able to slide relative to the frame so that the special-shaped pipe in the receiving groove is opposite to the clamping area in the extension direction of the rotation axis.

7. The pipe cutting machine according to claim 6, wherein: The opening of the accommodating groove faces upward, and the feeding mechanism includes a feeding frame, a feeding belt, and a sorting component. The feeding frame is installed next to the centering mechanism, and the feeding belt and the sorting component are installed on the feeding frame; the feeding frame is formed with a slope surface, and the slope surface is downwardly inclined from a side away from the centering mechanism to a side close to the centering mechanism; The feeding belt is used to place multiple special-shaped pipes and transport the multiple special-shaped pipes to the sorting component. The sorting component is used to sort out a single special-shaped pipe from the multiple special-shaped pipes and roll the single special-shaped pipe into the accommodating tank via the slope surface.

8. The pipe cutting machine according to claim 7, wherein: The loading rack is provided with a first material stopping cylinder and a second material stopping cylinder at intervals along the inclination direction of the slope surface. The output end of the first material stopping cylinder and the output end of the second material stopping cylinder can both move along a fourth direction and extend to the side of the slope surface away from the physical structure of the loading rack, and the fourth direction is set at an angle to the slope surface.

9. The pipe cutting machine according to claim 7 or 8, characterized in that: The frame is further provided with a positioning groove, and when the centering mechanism is in the initial position, the positioning groove and the accommodating groove are opposite to each other in the extension direction of the rotation axis; a guiding inclined surface is formed on the side of the positioning groove close to the loading rack body, the guiding inclined surface is opposite to the inclined surface, and the guiding inclined surface is inclined downward from the side close to the inclined surface to the side of the groove body close to the positioning groove; Alternatively, a guide slope is formed on one side of the accommodating groove close to the loading rack body, the guide slope is opposite to the slope surface, and the guide slope is inclined downward from the side close to the slope surface to the side of the trough body close to the accommodating groove.

10. The pipe cutting machine according to any one of claims 1 to 5, characterized in that: The chuck mechanism includes a front chuck and a rear chuck installed on the frame at intervals along the rotation axis, and the front chuck is closer to the cutting station than the rear chuck; the front chuck is formed with a first channel for allowing the special-shaped tube to pass through; the rear chuck is formed with the clamping area, and the rear chuck is configured to drive the special-shaped tube to move along the rotation axis and rotate around the rotation axis.

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