Pipe chipless cutting and blanking machine

Abstract

The pipe chipless cutting and blanking machine comprises a wire inlet guide wheel module, a pipe traction aligning module, a pipe straightening module, a centering keeping module and a pipe cutting module which are sequentially arranged in the pipe conveying direction, and the pipe cutting module is structurally characterized in that a cutterhead set is fixed to the outer ring of a bearing, the inner ring of the bearing is fixed to a fixing base, and the cutterhead set is fixed to the outer ring of the bearing; the cutterhead group rotation driving mechanism is in transmission connection with the cutterhead group; the cutterhead group comprises a cutterhead main frame which is coaxially and fixedly connected with the outer ring of the bearing, and a tightening disc rotation driving mechanism is arranged on the cutterhead main frame; tool rests are arranged on the tool disc main frame, blades are arranged at the ends of the tool rests, retracting and releasing guide columns are arranged on the tool rests, retracting and releasing guide arc-shaped holes are formed in the tightening disc in the circumferential direction, and the retracting and releasing guide column of each tool rest is arranged in the corresponding retracting and releasing guide arc-shaped hole of the tightening disc in a penetrating mode. The cutting device has the advantage that metal chips can be greatly reduced during cutting.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting equipment technology, and specifically to a chipless pipe cutting and blanking machine that is particularly suitable for continuous precision pipe cutting operations. Background Technology

[0002] In the field of metal pipe processing, cutting and blanking is a fundamental and crucial process. Currently, the industry commonly uses saw blade-based mechanical cutting to complete the cutting and blanking of pipes.

[0003] The disadvantages of this traditional saw blade mechanical cutting method are: (1) A large amount of metal shavings will be generated during production. These shavings not only need to be cleaned up, but also lead to a significant increase in subsequent processing costs. The cost of cleaning up these shavings accounts for about 12% to 15% of the total processing cost, which increases the production cost burden of enterprises. Moreover, these shavings can easily lead to excessive dust concentration at the production site, which deteriorates the working environment. This harsh working environment not only has an adverse effect on the service life of the processing equipment, but also poses a potential threat to the health of the operators. (2) The cutting efficiency of traditional sawing blanking machines is low. Summary of the Invention

[0004] The purpose of this invention is to provide a chipless pipe cutting machine that can significantly reduce metal chip generation and has high cutting efficiency during cutting.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a chipless pipe cutting and blanking machine, characterized in that: an inlet guide wheel module, a pipe traction and self-aligning module, a pipe straightening module, a centering and holding module, and a pipe cutting module are arranged sequentially along the pipe conveying direction; the inlet guide wheel module is used to smoothly guide the pipe into the pipe traction and self-aligning module; the pipe traction and self-aligning module is used to pull the pipe forward; the pipe straightening module is used to straighten the pipe; and the centering and holding module is used to accurately guide the pipe into the pipe cutting module. The structure of the pipe cutting module is as follows: it includes a fixed base, a bearing, a cutter head assembly and a cutter head assembly rotation drive mechanism. The cutter head assembly is fixed to the outer ring of the bearing, the inner ring of the bearing is fixed to the fixed base, and the cutter head assembly rotation drive mechanism is connected to the cutter head assembly to drive the cutter head assembly to rotate. The structure of the cutter head assembly includes: a cutter head main frame and a tightening plate. The cutter head main frame is coaxially and fixedly connected to the outer ring of the bearing. The tightening plate is coaxially and movably mounted on the cutter head main frame. Through holes are provided at the center of both the cutter head main frame and the tightening plate. The through holes together form a pipe cutting channel. A tightening plate rotation drive mechanism is installed on the cutter head main frame. The tightening plate rotation drive mechanism is connected to the tightening plate to drive the tightening plate to rotate relative to the cutter head main frame. At least one tool holder is circumferentially arranged on the main cutter head frame. Each tool holder can only move radially along the main cutter head frame. A blade is provided at the end of the tool holder facing the pipe cutting channel. A take-up and release guide post is provided on each tool holder. A plurality of take-up and release guide arc-shaped holes corresponding to the take-up and release guide posts of each tool holder are arranged circumferentially on the tightening plate. The take-up and release guide post of each tool holder passes through the corresponding take-up and release guide arc-shaped hole of the tightening plate, and the extension direction of each take-up and release guide arc-shaped hole is configured such that when the tightening plate is relative to the main cutter head frame... When rotating in the forward direction, the tightening disc can drive each tool holder to move radially towards the pipe cutting channel simultaneously through the cooperation of each take-up and release guide arc hole and the take-up and release guide post, thereby synchronously driving the blades on each tool holder to move radially towards the pipe cutting channel and cut the pipe in the pipe cutting channel; or when the tightening disc rotates in the opposite direction relative to the main cutter head frame, the tightening disc can drive each tool holder to move radially away from the pipe cutting channel simultaneously through the cooperation of each take-up and release guide arc hole and the take-up and release guide post, thereby causing each blade on each tool holder to leave the pipe.

[0006] Furthermore, in the aforementioned chipless pipe cutting machine: at least two blade holders are arranged circumferentially around the pipe cutting channel on the main cutter head frame. Each blade holder can only move radially along the main cutter head frame. At least one end of each blade holder facing the pipe cutting channel is equipped with a blade, and at least one end of each blade holder is equipped with a pressure roller that cooperates with the blade. When the tightening plate rotates forward relative to the main cutter head frame, the tightening plate can drive each blade holder and pressure roller to move radially towards the pipe cutting channel simultaneously through the cooperation of each take-up and release guide arc hole and take-up and release guide post. This synchronously drives the blades and pressure rollers on each blade holder to move radially towards the pipe cutting channel and cooperate to cut the pipe in the pipe cutting channel. Alternatively, when the tightening plate rotates in the opposite direction relative to the main cutter head frame, the tightening plate can drive each blade holder and pressure roller to move radially away from the pipe cutting channel simultaneously through the cooperation of each take-up and release guide arc hole and take-up and release guide post. This causes each blade on each blade holder to leave the pipe.

[0007] Furthermore, in the aforementioned chipless pipe cutting machine, the specific installation structure of the tightening disc on the cutter head main frame is as follows: the cutter head main frame includes a front plate and a back plate of the tightening disc arranged front and rear. The front plate and the back plate of the tightening disc are connected and fixed by several connecting columns to form the cutter head main frame. A through hole is provided at the center of both the front plate and the back plate of the tightening disc, and each through hole constitutes a through hole of the cutter head main frame. Several guide columns arranged around the pipe cutting channel are supported between the front plate and the back plate of the tightening disc. Each guide column is located on the same circumference to form a rotating support frame of the tightening disc coaxial with the cutter head main frame. Several concentric arc holes corresponding to each guide column are provided on the tightening disc along the circumferential direction. The tightening disc is arranged between the front plate and the back plate of the tightening disc, and each guide column of the rotating support frame of the tightening disc passes through the corresponding concentric arc holes of the tightening disc, so that the tightening disc is coaxially and movably mounted on the cutter head main frame.

[0008] Furthermore, in the aforementioned chipless pipe cutting machine, the specific installation structure of each tool holder on the main frame of the cutter head is as follows: a plurality of first radial guide grooves are provided circumferentially on the end face of the front plate of the tightening disc facing the tightening disc, and a plurality of second radial guide grooves are provided circumferentially on the end face of the back plate of the tightening disc facing the tightening disc. Each first radial guide groove and each second radial guide groove correspond one-to-one to form a plurality of radial guide channels. Each radial guide channel corresponds one-to-one with each tool holder, and each tool holder is slidably disposed in the corresponding radial guide channel, so that each tool holder can only move radially along the main frame of the cutter head.

[0009] Furthermore, in the aforementioned chipless pipe cutting machine, the structure of the rotary drive mechanism for the cutter head assembly is as follows: a rotary drive motor for the cutter head assembly is installed at the bottom of the fixed base, a first gear is installed on the output shaft of the rotary drive motor for the cutter head assembly, and a second gear that meshes with the first gear is coaxially fixed on the main frame of the cutter head assembly. The rotary drive motor for the cutter head assembly drives the cutter head assembly to rotate through the cooperation of the first gear and the second gear.

[0010] Furthermore, in the aforementioned chipless pipe cutting machine, the structure of the tightening disc rotation drive mechanism is as follows: a retracting motor is installed on the main frame of the cutter head, a third gear is installed on the output shaft of the retracting motor, and a fourth gear that meshes with the third gear is fixed on the outside of the tightening disc. The retracting motor drives the tightening disc to rotate relative to the main frame of the cutter head through the cooperation of the third gear and the fourth gear.

[0011] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, the structure of the centering and holding module is as follows: it includes a centering seat fixed to a fixed base, and a centering channel that runs through the centering seat from front to back is provided on the centering seat. The centering channel is a tapered centering channel with a diameter that gradually decreases along the forward conveying direction of the pipe. The small diameter end of the tapered centering channel is adapted to the diameter of the pipe and is exactly aligned with the pipe cutting channel.

[0012] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, the structure of the pipe traction self-aligning module includes a first bracket, an upper traction wheel mounting frame, and a lower traction wheel mounting frame; symmetrical upper vertical guide grooves are provided on the relatively inner walls of the left and right side plates of the first bracket, the upper traction wheel mounting frame is slidably disposed in the upper vertical guide groove, the upper traction wheel is supported in the upper traction wheel mounting frame by bearings, a first threaded hole is provided on the top plate of the first bracket above the upper traction wheel mounting frame, an upper traction adjusting bolt is threaded into the first threaded hole, the screw of the upper traction adjusting bolt passes downward through the top plate of the first bracket and abuts against the upper traction wheel mounting frame downward; in the first bracket Symmetrical lower vertical guide grooves are provided on the lower inner walls of the left and right side plates of the frame. The lower traction wheel mounting bracket is slidably disposed in the lower vertical guide groove. The lower traction wheel is supported in the lower traction wheel mounting bracket by bearings. The lower traction wheel and the upper traction wheel are arranged vertically correspondingly. A second threaded hole is provided on the first bracket base plate below the lower traction wheel mounting bracket. A lower traction adjusting bolt is threaded into the second threaded hole. The screw of the lower traction adjusting bolt passes upward through the first bracket base plate and pushes upward against the lower traction wheel mounting bracket. The upper traction wheel and the lower traction wheel rotate simultaneously in opposite directions under the drive of the traction drive mechanism to pull and transport the pipe located between the upper traction wheel and the lower traction wheel.

[0013] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, the traction drive mechanism is structured as follows: a second bracket is fixed outside the first bracket; a traction motor is mounted on the second bracket; a drive traction gear is mounted on the output shaft of the traction motor; an upper rotating shaft and a lower rotating shaft, distributed vertically, are supported on the second bracket on one side of the drive traction gear; a first upper driven traction gear and a first upper transmission wheel are sequentially fixedly mounted axially on the shaft of the upper rotating shaft, and the first upper driven traction gear meshes with the drive traction gear; a first lower driven traction gear and a first lower transmission wheel are sequentially fixedly mounted axially on the shaft of the lower rotating shaft, and the first lower driven traction gear meshes with the first upper driven traction gear. The gears mesh; upper clearance vertical holes are provided on the left and right side plates of the first bracket corresponding to the upper traction wheel mounting frame, which do not hinder the up and down movement of the upper traction wheel mounting frame. One side end of the axle of the upper traction wheel extends outward from the first bracket through the corresponding side upper clearance vertical hole and is fitted with a second upper transmission wheel. An upper transmission belt is wound between the second upper transmission wheel and the first upper transmission wheel; lower clearance vertical holes are provided on the left and right side plates of the first bracket corresponding to the lower traction wheel mounting frame, which do not hinder the up and down movement of the lower traction wheel mounting frame. One side end of the axle of the lower traction wheel extends outward from the first bracket through the corresponding side lower clearance vertical hole and is fitted with a second lower transmission wheel. A lower transmission belt is wound between the second lower transmission wheel and the first lower transmission wheel.

[0014] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, the pipe straightening module has the following structure: it includes a third support, in which an upper straightening roller group and a lower straightening roller group are arranged vertically. A pipe straightening channel is formed between the upper straightening roller groups. The upper straightening roller group consists of several upper straightening rollers arranged at intervals along the pipe conveying direction. The upper straightening rollers are installed on the third support through an upper roller adjustment mechanism. The lower straightening roller group consists of several lower straightening rollers arranged at intervals along the pipe conveying direction. The lower straightening rollers are installed on the third support through a lower roller adjustment mechanism. The upper straightening rollers and the lower straightening rollers are staggered so that there is one upper straightening roller corresponding to the gap between every two adjacent lower straightening rollers. Under the drive of the corresponding roller adjustment mechanisms, the upper straightening roller group and the lower straightening roller group can move closer or further apart in the vertical direction to straighten the pipe passing through the pipe straightening channel.

[0015] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, the structure of the lower roller adjustment mechanism is as follows: a lower vertical slide groove is provided at the lower part of the third support, a lower slide block is slidably provided in the lower vertical slide groove, the lower straightening roller is movably supported on the lower slide block, a third threaded hole is provided on the bottom plate of the third support below the lower slide block, a lower straightening bolt is threadedly connected in the third threaded hole, and the screw of the lower straightening bolt passes upward through the bottom plate of the third support and pushes the lower slide block upward; The structure of the upper roller adjustment mechanism includes: an upper vertical slide groove is provided on the upper part of the third bracket, an upper slider is slidably arranged in the upper vertical slide groove, an upper straightening roller is movably supported on the upper slider, a fourth threaded hole is provided on the top plate of the third bracket above the upper slider, an upper straightening bolt is threadedly connected in the fourth threaded hole, and the screw of the upper straightening bolt passes downward through the top plate of the third bracket and presses against the upper slider downward.

[0016] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, the structure of the infeed guide wheel module is as follows: it includes an infeed guide wheel bracket, in which horizontal infeed guide wheel groups and vertical infeed guide wheel groups are alternately arranged along the pipe conveying direction. The horizontal infeed guide wheel group consists of two infeed guide wheels arranged vertically and horizontally, and the vertical infeed guide wheel group consists of two infeed guide wheels arranged horizontally and vertically.

[0017] Furthermore, in the aforementioned chipless pipe cutting and blanking machine, a feeding length detection mechanism for detecting the feeding length of the pipe is also provided between the pipe straightening module and the pipe traction self-aligning module. The feeding length detection mechanism includes a clamp, an encoder bracket, and an encoder. The top of the clamp has two clamping parts arranged at relative intervals, and the gap between the two clamping parts forms a clamping opening. A long shaft is fixed on the encoder bracket, and the long shaft passes through the clamping opening between the two clamping parts so that the encoder bracket can rotate relative to the clamp through the long shaft. An encoder bracket locking mechanism is provided on the clamp to fix the encoder bracket to the clamp when the encoder bracket rotates to the correct position. The encoder is fixedly installed on the encoder bracket, and a detection wheel is fixedly mounted on the output shaft of the encoder. The detection wheel is used to contact the pipe moving towards the pipe cutting channel and rotates synchronously with the pipe moving forward.

[0018] Furthermore, in the aforementioned chipless pipe cutting machine, the encoder bracket locking mechanism comprises a locking bolt and a locking nut. Two clamping portions 83 of the clamping seat each have a through hole. The through holes of the two clamping portions are coaxial. The bolt of the locking bolt passes through the through holes of both clamping portions and is threadedly connected to the locking nut. When the locking nut is tightened, it engages with the locking bolt to drive the two clamping portions to move towards each other, clamping the long shaft on the encoder bracket, thereby locking and fixing the encoder bracket to the clamping seat.

[0019] The beneficial effects of implementing the above technical solution are as follows: (1) The cutting method combines a rotary cutter head assembly with radial feed blades. Multiple blades simultaneously perform extrusion cutting on the pipe, which greatly reduces the generation of metal chips during cutting, significantly improves the working environment, and reduces cleaning costs and subsequent processing burden.

[0020] (2) High cutting quality: Multiple blades are fed radially synchronously with the pressure roller, and the force is uniform. The blades are controlled by an independent drive mechanism, and the action is precise and reliable, ensuring that the cutting surface is flat and smooth, without burrs or edge flipping.

[0021] (3) The centering module and the traction centering module ensure that the pipe remains centered during the transportation process, further guaranteeing the cutting accuracy.

[0022] (4) High degree of automation and high production efficiency: It integrates the functions of automatic feeding, automatic straightening, automatic length detection, automatic cutting and automatic blade retraction of the traction self-aligning module, realizing the full automation of the pipe from loading to fixed length cutting and unloading; moreover, the high-speed rotation of the cutter head combined with the radial feed of the blade results in fast cutting speed and significantly higher efficiency than traditional sawing.

[0023] (5) Wide range of applications: Both the traction self-aligning module and the straightening module are designed with precise adjustment mechanisms, and the cutter head group adopts a unique radial feed structure, which can realize the conveying and cutting of different pipes within a certain diameter range.

[0024] (6) Reasonable structural design and stable operation: The cutter head assembly is supported by large bearings and driven to rotate by a motor, which makes the structure stable and the operation smooth; at the same time, the tightening plate is connected to the cutter head main frame through guide columns and concentric arc holes, which ensures the rotation accuracy and the synchronicity of the cutter head movement; the functional modules are compactly laid out and work together to ensure the reliability and stability of the whole machine operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a chipless pipe cutting and blanking machine according to the present invention.

[0026] Figure 2 for Figure 1 Top view.

[0027] Figure 3 for Figure 1 A stereoscopic view from one perspective.

[0028] Figure 4 for Figure 1 A stereoscopic view from another perspective.

[0029] Figure 5 This is a schematic diagram of the pipe cutting module.

[0030] Figure 6 for Figure 5 AA sectional view.

[0031] Figure 7 for Figure 5 A stereoscopic view from one perspective.

[0032] Figure 8 for Figure 5 A stereoscopic view from another perspective.

[0033] Figure 9 for Figure 5 The diagram shows the structure after the front plate of the tightening disc and the retracting motor are removed.

[0034] Figure 10 for Figure 5 Exploded view.

[0035] Figure 11 A schematic diagram of the structure for tightening the front plate.

[0036] Figure 12 A schematic diagram of the structure for tightening the back plate of the disc.

[0037] Figure 13This is a schematic diagram of the tightening disc.

[0038] Figure 14 for Figure 9 The diagram shows the connection between the tightening disc and the tool holder after part of the tool holder is hidden.

[0039] Figure 15 This is a schematic diagram showing the connection between the tool holder and the blade.

[0040] Figure 16 This is a structural diagram of the pipe straightening module and the pipe traction self-aligning module.

[0041] Figure 17 for Figure 16 BB cross-sectional view.

[0042] Figure 18 for Figure 16 Top view.

[0043] Figure 19 for Figure 18 CC section view.

[0044] Figure 20 for Figure 18 DD sectional view.

[0045] Figure 21 This is a schematic diagram of the traction drive mechanism in the pipe traction self-aligning module.

[0046] Figure 22 for Figure 16 A stereoscopic view from one perspective.

[0047] Figure 23 for Figure 16 A stereoscopic view from another perspective.

[0048] Figure 24 This is a three-dimensional view of the first support in the pipe traction self-aligning module.

[0049] Figure 25 This is a 3D view of the third support in the pipe straightening module.

[0050] Figure 26 This is a schematic diagram of the infeed guide wheel module.

[0051] Figure 27 for Figure 26 A schematic diagram of the structure after the inlet guide wheel bracket is hidden.

[0052] Figure 28 This is a schematic diagram of the feeding length detection mechanism. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0054] For ease of description, let's use Figure 1 The left-hand direction is defined as "forward". Figure 1 The right-hand direction is defined as "back". Figure 1 "Above" is defined as "above". Figure 1 The term "down" is defined as "below," and a coordinate system is established based on this to determine the directions "left," "right," "front," "back," "up," and "down." All directional terms in this invention involving the directions "front," "back," "left," "right," "up," and "down" are defined according to this direction definition.

[0055] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the chipless pipe cutting and blanking machine includes an infeed guide wheel module 200, a pipe traction and self-aligning module 300, a pipe straightening module 400, a centering and holding module 500, and a pipe cutting module 600 arranged sequentially along the conveying direction of the pipe 100. The infeed guide wheel module 200 is used to smoothly guide the pipe 100 into the pipe traction and self-aligning module 300. The pipe traction and self-aligning module 300 is used to pull the pipe 100 forward. The pipe straightening module 400 is used to straighten the pipe 100. The centering and holding module 500 is used to accurately guide the pipe 100 into the pipe cutting module 600. The structure of the pipe cutting module 600 includes a fixed base 1, a bearing, a cutter head assembly, and a cutter head assembly rotation drive mechanism. The cutter head assembly is fixed to the outer ring 2 of the bearing, and the inner ring 3 of the bearing is fixed to the fixed base 1. The cutter head assembly rotation drive mechanism is connected to the cutter head assembly to drive the cutter head assembly to rotate.

[0057] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 As shown, the structure of the cutter head assembly includes: a cutter head main frame and a tightening plate 4. The cutter head main frame is coaxially and fixedly connected to the outer ring 2 of the bearing. The tightening plate 4 is coaxially and movably mounted on the cutter head main frame. In this embodiment, the specific installation structure of the tightening plate 4 on the cutter head main frame is as follows: the cutter head main frame includes a front plate 5 and a back plate 6 of the tightening plate arranged front and rear. The front plate 5 and the back plate 6 of the tightening plate are connected and fixed by several connecting columns 7 to form the cutter head main frame. A first through hole 51 is provided in the center of the front plate 5, a second through hole 61 is provided in the center of the back plate 6, and a third through hole 41 is provided in the center of the tightening plate 4. The first through hole 51, the second through hole 61, and the third through hole 41 are combined. A pipe cutting channel is formed; several guide posts 8 are supported between the front plate 5 and the back plate 6 of the tightening disc, arranged around the pipe cutting channel. Each guide post 8 is located on the same circumference to form a tightening disc rotating support frame coaxial with the main frame of the cutter head. The tightening disc 4 is arranged between the front plate 5 and the back plate 6 of the tightening disc. Several concentric arc holes 9 corresponding to each guide post 8 are arranged circumferentially on the tightening disc 4. Each concentric arc hole 9 is located on the same circumference with the center of the tightening disc 4 as the center, and the circumference matches the circumference where each guide post 8 is located. Each guide post 8 of the rotating support frame of the tightening disc passes through the corresponding concentric arc holes 9 of the tightening disc 4, so that the tightening disc 4 is coaxially and movably arranged on the main frame of the cutter head.

[0058] In this embodiment, the structure of the cutter head assembly rotation drive mechanism is as follows: a cutter head assembly rotation drive motor 10 is installed at the bottom of the fixed base 1, a first gear 11 is installed on the output shaft of the cutter head assembly rotation drive motor 10, and a second gear 12 that meshes with the first gear 11 is coaxially fixed on the cutter head main frame of the cutter head assembly. In this embodiment, the second gear 12 is located between the tightening disc back plate 6 and the outer ring 2. The second gear 12 is fixed to both the tightening disc back plate 6 and the outer ring 2 by several connecting bolts. The cutter head assembly rotation drive motor 10 drives the cutter head assembly to rotate through the cooperation of the first gear 11 and the second gear 12.

[0059] In this embodiment, a tightening disc rotation drive mechanism is installed on the cutter head main frame. The tightening disc rotation drive mechanism is connected to the tightening disc to drive the tightening disc to rotate relative to the cutter head main frame. The structure of the tightening disc rotation drive mechanism is as follows: a cutter retraction motor 13 is installed on the front end face of the tightening disc front plate 5 of the cutter head main frame. A third gear 14 is installed on the output shaft of the cutter retraction motor 13. A fourth gear 15 that meshes with the third gear 14 is fixed on the outside of the tightening disc 4. The cutter retraction motor 13 drives the tightening disc 4 to rotate relative to the cutter head main frame through the cooperation of the third gear 14 and the fourth gear 15. In this embodiment, the fourth gear 15 is a tooth segment, which is installed on the outer periphery of the tightening disc by fastening bolts.

[0060] In this embodiment, to ensure the stability and smoothness of the electrical connection of the retractable motor 13 while it rotates with the main frame of the cutter head, a conductive slip ring mounting structure is adopted. Specifically, a conductive slip ring sleeve 73 is coaxially fixed on the second gear 12, and a conductive slip ring 74 is provided in the conductive slip ring sleeve 73. The rotor of the conductive slip ring 74 is on the outside and the stator is on the inside. The center of the stator has a central hole facing the pipe cutting channel. The rotor of the conductive slip ring 74 is tightly fitted and fixed to the conductive slip ring sleeve 73. The power input terminal of the retractable motor 13 is electrically connected to the rotor side line of the conductive slip ring 74 through a wire, and the stator side line of the conductive slip ring 74 is electrically connected to an external power source, thereby transmitting the power of the external power source to the retractable motor 13 through the conductive slip ring.

[0061] At least two tool holders 16 are arranged circumferentially around the pipe cutting channel on the main cutter head frame. In this embodiment, there are three tool holders 16, which are evenly distributed circumferentially. Each tool holder can only move radially along the main cutter head frame. In this embodiment, the specific installation structure of each tool holder 16 on the main cutter head frame is as follows: several first radial guide grooves 52 are arranged circumferentially on the end face of the front plate of the tightening plate 4 facing the tightening plate 4. In this embodiment, there are three first radial guide grooves 52, which are arranged circumferentially along the main cutter head frame. The second radial guide grooves 62 are evenly distributed circumferentially on the end face of the back plate 6 of the tightening disc 4. In this embodiment, there are three second radial guide grooves 62, which are evenly distributed circumferentially. Each first radial guide groove 52 and each second radial guide groove 62 correspond one-to-one to form three radial guide channels evenly distributed circumferentially. Each radial guide channel corresponds one-to-one with each tool holder. Each tool holder is slidably disposed in the corresponding radial guide channel, so that each tool holder can only move radially along the main frame of the tool disc.

[0062] Each tool holder has at least one end with a blade facing the pipe cutting channel and at least one end with a pressure roller that matches the blade. In this example, there are three tool holders 16. Two of the tool holders have blades 17 supported at the end facing the pipe cutting channel, and the remaining tool holder 16 has a pressure roller 18 that matches the blade 17 supported at the end facing the pipe cutting channel. The pressure roller 18 can prevent the pipe from turning over during the cutting process of the blade 17.

[0063] Each tool holder 16 is provided with a take-up and release guide post 19. The tightening disc 4 has three circumferentially arranged arc-shaped take-up and release guide holes 20 corresponding to the take-up and release guide posts 19 of the three tool holders 16. Each take-up and release guide post 19 of the tool holder 16 passes through the corresponding arc-shaped take-up and release guide hole 20 of the tightening disc 4. The extension direction of each arc-shaped take-up and release guide hole 20 is configured such that when the tightening disc 4 rotates forward relative to the main tool holder, the tightening disc 4 can pass through each arc-shaped take-up and release guide hole 20 and interact with the take-up and release guide post. The cooperation of the 19 drives each cutter post 16 to move radially towards the pipe cutting channel, so that each blade 17 and pressure roller 18 on each cutter post 16 cooperate to cut the pipe 100 in the pipe cutting channel; or when the tightening plate 4 rotates in the opposite direction to the cutter head main frame, the tightening plate 4 can drive each cutter post 16 to move radially away from the pipe cutting channel through the cooperation of each take-up and release guide arc hole 20 and take-up and release guide post 19, so that each blade 17 and pressure roller 18 on each cutter post 16 leave the pipe 100.

[0064] In this embodiment, a centering retaining module 500 is installed on the fixed seat 1 at the input end of the pipe cutting channel. The centering retaining module 500 can ensure that the pipe accurately enters the pipe cutting channel. The structure of the centering retaining module 500 includes: a centering seat 22 fixed to the fixed seat 1, and a centering channel 23 that runs through the centering seat 22 from front to back. The centering channel 23 is a tapered centering channel with a diameter that gradually decreases along the forward conveying direction of the pipe. The small diameter end of the tapered centering channel is adapted to the diameter of the pipe 100 and is exactly aligned with the pipe cutting channel.

[0065] In this embodiment, a pipe traction self-aligning module 300 for traction pipe 100 is provided on the input side of the self-aligning module 500, such as... Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 23 , Figure 24As shown, the structure of the pipe traction self-aligning module 300 includes a first bracket 25, an upper traction wheel mounting bracket 26, and a lower traction wheel mounting bracket 27. Symmetrical upper vertical guide grooves 28 are provided on the upper inner walls of the left and right side plates of the first bracket 25. The upper traction wheel mounting bracket 26 is slidably disposed in the upper vertical guide groove 28. The upper traction wheel 29 is supported in the upper traction wheel mounting bracket 27 by a bearing 30. A first threaded hole is provided on the top plate 30 of the first bracket above the upper traction wheel mounting bracket 27. An upper traction adjusting bolt 31 is threaded into the first threaded hole. The screw of the upper traction adjusting bolt 31 passes downward through the top plate 30 of the first bracket and abuts against the upper traction wheel mounting bracket. The upper end of the upper traction adjusting bolt 31 extends upward from the top plate 30 of the first bracket and is threadedly connected to a first locking nut 75. The first locking nut 75 can lock the upper traction adjusting bolt 31 to prevent it from loosening during use and ensure that the upper traction adjusting bolt 31 limits the upper traction wheel, thereby ensuring the stability of traction. A first spring 75 is provided between the upper traction wheel mounting bracket 26 and the top plate 30 of the first bracket. The first spring 75 makes the upper traction wheel mounting bracket 26 always have a downward tendency, so that the upper traction wheel 29 can always be clamped downward with the lower traction wheel 33 in an up-down relative position to stabilize the traction pipe 100. Symmetrical lower vertical guide grooves 32 are provided on the lower inner walls of the left and right side plates of the first bracket 25. The lower traction wheel mounting bracket 27 is slidably disposed in the lower vertical guide grooves 32. The lower traction wheel 33 is supported in the lower traction wheel mounting bracket 27 by bearings. The lower traction wheel 33 is arranged vertically corresponding to the upper traction wheel 29. A second threaded hole is provided on the first bracket base plate 34 below the lower traction wheel mounting bracket 27. A lower traction adjusting bolt 35 is threaded into the second threaded hole. The screw of the lower traction adjusting bolt 35 passes upward through the first bracket base plate 34 and pushes upward against the lower traction wheel mounting bracket 27. The lower end extends downward from the base plate 34 of the first bracket and is threaded with a second locking nut 77. The second locking nut 77 can lock the lower traction adjusting bolt 35 to prevent the lower traction adjusting bolt 35 from loosening during use, and ensure the limiting effect of the lower traction adjusting bolt 35 on the lower traction wheel 29, thereby ensuring the stability of traction. A second spring 78 is provided between the lower traction wheel mounting bracket 27 and the base plate 34 of the first bracket. The second spring 78 makes the lower traction wheel mounting bracket 27 always have an upward tendency, so that the lower traction wheel 33 can always be downward and clamped with the upper traction wheel 29 in an up-down relative position to stabilize the traction pipe 100.

[0066] In the above-mentioned pipe traction self-aligning module 300, the gap between the upper traction wheel 29 and the lower traction wheel 33 can be adjusted to adapt to pipes of various diameters, and to ensure that the pipes pulled by the upper traction wheel 29 and the lower traction wheel 33 are still coaxial with the pipe cutting channel in the cutter head assembly after adjustment.

[0067] The procedure for adjusting the gap between the upper traction wheel 29 and the lower traction wheel 33 is as follows: First, loosen the first locking nut 75 corresponding to the upper traction adjusting bolt 31, and then rotate the upper traction adjusting bolt 31 upward; and loosen the second locking nut 77 corresponding to the lower traction adjusting bolt 35, and then rotate the lower traction adjusting bolt 35 downward. During the downward movement of the lower traction adjusting bolt 35, the lower traction wheel mounting bracket 27, which is equipped with the lower traction wheel 33, will move down synchronously under its own weight to abut against the lower traction adjusting bolt 35. Through the above operation, the distance between the upper traction wheel 29 and the lower traction wheel 33 can be increased. Next, the pipe to be pulled is inserted into the pipe traction adjustment module 24 and placed on the lower traction wheel 33. At this time, the pipe is mainly supported by the lower traction wheel 33. Then, the lower traction adjustment bolt 35 is rotated forward or backward to adjust the up and down position of the lower traction wheel 33, thereby simultaneously adjusting the up and down position of the pipe supported by the lower traction wheel 33 until the pipe and the pipe cutting channel of the cutter head assembly are coaxial. Then, the rotation of the lower traction adjustment bolt 35 is stopped and the corresponding second locking nut 77 is tightened to position the lower traction wheel 33.

[0068] Throughout the process of adjusting the pipe axis via the lower traction wheel 33, the upper traction wheel 29 will always press down on the pipe 100 under its own weight. After the lower traction wheel 33 adjusts the pipe to be coaxial with the pipe cutting channel of the cutter head assembly and completes the positioning, the upper traction adjusting bolt 31 is rotated downwards. The upper traction adjusting bolt 31 presses down on the upper traction wheel mounting bracket 26, and then simultaneously presses down on the upper traction wheel 29, so that the upper traction wheel 29 and the lower traction wheel 33 can clamp the conveying pipe 100 in a relative clamping position. Then, the first locking nut 75 corresponding to the upper traction adjusting bolt 31 is tightened, thus completing the adjustment of the gap between the upper traction wheel 29 and the lower traction wheel 33.

[0069] The upper traction wheel 29 and the lower traction wheel 33 rotate simultaneously in opposite directions under the drive of the traction drive mechanism to pull and transport the pipe 100 located between the upper traction wheel 29 and the lower traction wheel 33. In this embodiment, the structure of the traction drive mechanism is as follows: a second bracket 36 is fixed outside the first bracket 25, a traction motor 37 is installed on the second bracket 36, an active traction gear 38 is installed on the output shaft of the traction motor 37, an upper rotating shaft 39 and a lower rotating shaft 40 distributed vertically are supported on the second bracket 36 on one side of the active traction gear 38, a first upper driven traction gear 41 and a first upper transmission wheel 42 are sequentially fixedly mounted on the shaft of the upper rotating shaft 39 along the axial direction, the first upper driven traction gear 41 meshes with the active traction gear 38, and a first lower driven traction gear 43 and a first lower transmission wheel 44 are sequentially fixedly mounted on the shaft of the lower rotating shaft 40 along the axial direction. The lower driven traction gear 43 meshes with the first upper driven traction gear 41; the left and right side plates of the first bracket corresponding to the upper traction wheel mounting frame 26 are provided with upper clearance vertical holes 45 that do not obstruct the up and down movement of the upper traction wheel mounting frame 26; one side shaft end of the axle 291 of the upper traction wheel 29 extends outward through the corresponding side upper clearance vertical hole 45 from the first bracket 25 and is fixedly fitted with a second upper transmission wheel 46; an upper transmission belt 47 is wound between the second upper transmission wheel 46 and the first upper transmission wheel 42; the left and right side plates of the first bracket corresponding to the lower traction wheel mounting frame 27 are provided with lower clearance vertical holes 48 that do not obstruct the up and down movement of the lower traction wheel mounting frame 27; one side shaft end of the axle 331 of the lower traction wheel 33 extends outward through the corresponding side lower clearance vertical hole 48 from the first bracket 25 and is fixedly fitted with a second lower transmission wheel 49; a lower transmission belt 50 is wound between the second lower transmission wheel 49 and the first lower transmission wheel 44.

[0070] The aforementioned traction drive mechanism can not only drive the upper traction wheel 29 and the lower traction wheel 33 to rotate in opposite directions simultaneously to traction and transport the pipe 100 located between the upper traction wheel 29 and the lower traction wheel 33; but also ensure effective traction of the upper traction wheel 29 and the lower traction wheel 33 regardless of whether the upper traction wheel 29 and the lower traction wheel 33 are adjusted to different positions to match the pipe opening radially upward or downward.

[0071] The above-mentioned traction drive mechanism pulls the upper traction wheel 29 and the lower traction wheel 33 as follows: The traction motor 37 drives the active traction gear 38 to rotate, and the active traction gear 38 drives the first upper driven traction gear 41 to rotate. During the rotation of the first upper driven traction gear 41, the first upper driven traction gear 41 not only synchronously drives the upper rotating shaft 39 and the first upper transmission wheel 42 to rotate, but also synchronously drives the first lower driven traction gear 43 to rotate through meshing. During the rotation of the first lower driven traction gear 43, it will synchronously drive the lower rotating shaft 40 and the first lower transmission wheel 44 to rotate. When the first upper drive wheel 42 rotates, it drives the axle 291 of the upper traction wheel 29 to rotate via the upper drive belt 47, thereby synchronously driving the upper traction wheel 29 to rotate; when the first lower drive wheel 44 rotates, it drives the axle 331 of the lower traction wheel 33 to rotate via the lower drive belt 50, thereby synchronously driving the lower traction wheel 33 to rotate; thus driving the upper traction wheel 29 and the lower traction wheel 33 to rotate in opposite directions at the same time to pull and transport the pipe 100 located between the upper traction wheel 29 and the lower traction wheel 33.

[0072] In this embodiment, a pipe straightening module 400 is provided between the pipe traction self-aligning module 300 and the self-aligning and holding module 500, such as... Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 22 , Figure 23 , Figure 25 As shown, the pipe straightening module 400 has the following structure: it includes a third support 54, in which an upper straightening roller group and a lower straightening roller group are arranged vertically. A pipe straightening channel is formed between the upper straightening roller groups. The upper straightening roller group consists of a plurality of upper straightening rollers 55 arranged at intervals along the pipe conveying direction. In this embodiment, the number of upper straightening rollers 55 is three. The upper straightening rollers 55 are installed on the third support 54 through an upper roller adjustment mechanism. The lower straightening roller group consists of a plurality of upper straightening rollers 55 arranged at intervals along the pipe conveying direction. The system consists of several downward straightening rollers 56. In this embodiment, there are four downward straightening rollers 56. The downward straightening rollers 56 are mounted on the third bracket 54 through a downward roller adjustment mechanism. The upward straightening rollers 55 and the downward straightening rollers 56 are staggered so that there is one upward straightening roller 55 between every two adjacent downward straightening rollers 56. The upward straightening roller group and the downward straightening roller group can move closer or further apart in the vertical direction under the drive of the corresponding roller adjustment mechanism to straighten the pipe 100 passing through the pipe straightening channel.

[0073] In this embodiment, the structure of the lower roller adjustment mechanism is as follows: a lower vertical slide groove 58 is provided at the lower part of the third bracket 54, a lower slider 59 is slidably disposed in the lower vertical slide groove 58, a lower straightening roller 56 is movably supported on the lower slider 59, a third threaded hole is provided on the third bracket base plate 60 below the lower slider 59, and a lower straightening bolt 63 is threadedly connected in the third threaded hole. The screw of the lower straightening bolt 63 passes upward through the third bracket base plate 60 and pushes upward against the lower slider 59. In this embodiment, A third spring 79 is provided between the lower slider 59 and the top wall 581 of the lower vertical slide groove 58. The function of the third spring 79 is: (1) to provide a stable preload and eliminate gaps and shaking: Since the third spring 79 is always in a compressed state, it applies a continuous downward force to the lower slider 59. This downward elastic force ensures that the lower slider 59 can tightly abut against the end of the screw of the lower straightening bolt 63; in this way, the external thread of the lower straightening bolt 63 and the third bracket base plate 60 are effectively eliminated. The fit clearance between the internal threads of the third threaded hole; this design can prevent the entire support structure of the lower straightening roller 56 from wobbling slightly in the vertical direction due to the thread clearance, thereby ensuring the stability and accuracy of the roller position during the straightening process, and ultimately ensuring the straightening effect of the pipe; (2) Achieve stable adjustment: When the lower straightening roller 56 needs to be adjusted upward, the operator needs to overcome the spring force and screw in the lower straightening bolt 63, so that the lower straightening bolt 63 can push the lower slider 59 to move upward; this spring force plays a buffering and damping role, so that the adjustment process is not completely free, but requires a certain force to be applied, which effectively avoids the situation where the roller position is easily changed due to the lower straightening bolt 63 being accidentally loosened or slightly touched, and ensures the stability of the set position during operation; at the same time, this design also makes the operator intentionally and gradually screw in the bolt when performing the upward adjustment operation, which helps to achieve more precise and controllable adjustment and prevent the straightening accuracy from being affected by the excessive adjustment range.

[0074] The structure of the upper roller adjustment mechanism includes: an upper vertical slide groove 64 is provided on the upper part of the third bracket 54, an upper slider 65 is slidably provided in the upper vertical slide groove 64, the upper straightening roller 55 is movably supported on the upper slider 65, a fourth threaded hole is provided on the top plate 67 of the third bracket above the upper slider 65, an upper straightening bolt 68 is threadedly connected in the fourth threaded hole, the screw of the upper straightening bolt 68 passes downward through the top plate 67 of the third bracket and presses against the upper slider 65 downward; in this embodiment, a fourth spring 80 is provided between the upper slider 65 and the bottom wall 641 of the upper vertical slide groove 64, the function of the fourth spring 80 is: (1) to provide a stable preload force and eliminate gaps and shaking: since the fourth spring 80 is always in a compressed state, it applies a continuous upward force to the upper slider 65, this upward elastic force ensures that the upper slider 65 can tightly press against the end of the screw of the upper straightening bolt 68; in this way, the external thread of the upper straightening bolt 68 and the top plate 67 of the third bracket are effectively eliminated. 7. The fit clearance between the internal threads of the fourth threaded hole; This design can prevent the upper straightening bolt 68 from wobbling slightly in the vertical direction due to the thread clearance, thereby ensuring the stability and accuracy of the roller position during the straightening process, and ultimately ensuring the straightening effect of the pipe; (2) Achieve stable adjustment: When the upper straightening bolt 68 needs to be lowered, the operator needs to overcome the spring force to screw the upper straightening bolt 68 in, so that the upper straightening bolt 68 can push the upper slider 65 to move up; This spring force plays a buffering and damping role, so that the adjustment process is not completely free, but requires a certain force to be applied, which effectively avoids the situation where the roller position is easily changed due to the upper straightening bolt 68 being accidentally loosened or slightly touched, and ensures the stability of the set position during operation; At the same time, this design also requires the operator to intentionally and gradually screw in the bolt when performing the lowering operation, which helps to achieve more precise and controllable adjustment and prevent the straightening accuracy from being affected by the excessive adjustment range.

[0075] In this embodiment, a feeding length detection mechanism 87 for detecting the feeding length is also provided between the pipe straightening module 400 and the pipe traction self-aligning module 300, such as... Figure 28As shown, the feeding length detection mechanism 87 includes: a clamp 82, an encoder bracket 81, and an encoder 79. The top of the clamp 82 has two clamping parts 83 arranged at relative intervals, with a gap between the two clamping parts 83 forming a clamping opening. A long shaft 84 is fixed on the encoder bracket 81, and the long shaft 84 passes through the clamping openings of the two clamping parts 83 on the clamp 82, so that the encoder bracket 81 can rotate relative to the clamp 82 through the long shaft 84. An encoder bracket locking mechanism is provided on the clamp 82 to fix the encoder bracket 81 to the clamp when the encoder bracket 81 rotates to the correct position. The encoder 79 is fixedly installed on the encoder bracket. A bracket 81 has a detection wheel 80 fixedly mounted on the output shaft of the encoder 79. The detection wheel 80 is used to contact the pipe moving towards the pipe cutting channel and rotates synchronously with the pipe due to friction, thereby synchronously driving the encoder's feed shaft to rotate synchronously. The encoder monitors the feeding length in real time according to the rotation signal of the output shaft and sends the feeding length to the control system. In this embodiment, all electrical equipment is connected to the control system and its actions are controlled by the control system. The control system can control the operation of the cutter head group rotation drive motor 10 and the cutter retraction motor 13 according to the information sent by the encoder 79, so as to better realize the automatic cutting of the pipe.

[0076] In this embodiment, the encoder bracket locking mechanism comprises a locking bolt 85 and a locking nut 86. Two clamping portions 83 of the clamping seat 81 are each provided with a through hole. The through holes of the two clamping portions 83 are coaxial. The bolt of the locking bolt 85 passes through the through holes of both clamping portions and is threadedly connected to the locking nut 86. When the locking nut 86 is tightened, it cooperates with the locking bolt 85 to drive the two clamping portions 83 to move towards each other to clamp the long shaft 84 on the encoder bracket 81, thereby locking and fixing the encoder bracket 81 to the clamping seat 82.

[0077] In this embodiment, an inlet guide wheel module 200 is provided on the input side of the pipe traction self-aligning module 300. The inlet guide wheel module 200 is used to smoothly guide the pipe between the upper traction wheel 29 and the lower traction wheel 33 in the pipe traction self-aligning module 300, such as... Figure 26 , Figure 27 As shown, the structure of the feed guide wheel module 200 is as follows: it includes a feed guide wheel bracket 70, in which a horizontal feed guide wheel group 71 and a vertical feed guide wheel group 72 are alternately arranged along the pipe conveying direction. The horizontal feed guide wheel group 71 is composed of two feed guide wheels arranged vertically and horizontally parallel to each other, and the vertical feed guide wheel group 72 is composed of two feed guide wheels arranged horizontally and horizontally parallel to each other.

[0078] During operation, the pipe to be cut 100 is first inserted from the inlet guide wheel module 200 into the pipe traction self-aligning module 300 between the upper traction wheel 29 and the lower traction wheel 33. Then, the traction drive mechanism drives the upper traction wheel 29 and the lower traction wheel 33 to rotate in opposite directions to pull the pipe to be cut 100 located between the upper traction wheel 29 and the lower traction wheel 33 forward.

[0079] During the forward movement of the pipe to be cut 100, the pipe to be cut 100 will first be straightened by the pipe straightening module 400, and then enter the pipe cutting channel of the cutter head assembly through the centering channel 23 of the centering and holding module 500. The position of each blade in the cutter head assembly is the cutting position.

[0080] When the pipe 100 to be cut moves forward along the pipe cutting channel to a length exceeding the cutting position and reaching the preset cutting length, the pipe traction self-aligning module 300 stops the upper traction wheel 29 and the lower traction wheel 33 from pulling the pipe 100 forward; then the cutter head assembly rotation drive motor 10 drives the second gear 12 to rotate through the first gear 11, thereby synchronously driving the entire cutter head assembly to rotate relative to the fixed seat 1 and the inner ring 3. During the entire rotation of the cutter head assembly, the cutter retraction motor 13 drives the tightening disc 4 to rotate forward relative to the cutter head main frame through the cooperation of the third gear 14 and the fourth gear 15 (forward rotation is... Figure 14 The tightening disc rotates counterclockwise. During the forward rotation of the tightening disc 4 relative to the main cutter head frame, the tightening disc 4 simultaneously drives each take-up and release guide column 19 to move radially toward the pipe 100 in the pipe cutting channel through each take-up and release guide arc hole 20. Simultaneously, it drives each cutter holder 16 to move radially toward the pipe 100 in the pipe cutting channel. In turn, it drives each blade 17 and pressure roller 18 to move toward the pipe 100 in the pipe cutting channel. After each blade 17 and pressure roller 18 contacts the pipe 100 in the pipe cutting channel, as each blade 17 and pressure roller 18 continue to move radially toward the inside of the pipe 100, each blade 17 and pressure roller 18 rotating with the cutter head assembly will cooperate to cut the pipe 100 in the pipe cutting channel. During the cutting process of each blade 17, the pressure roller 18 will always press against and move along the outer circumferential surface of the pipe cutting part to prevent the pipe cutting part from flipping during the cutting process.

[0081] After each blade 17 and pressure roller 18 of the cutter head assembly completes the cutting of the pipe 100, the operation of the cutter head assembly rotation drive motor 10 is stopped, thereby stopping the rotation of the entire cutter head assembly relative to the fixed base 1 and the inner ring 3. At the same time, the retracting motor 13 drives the tightening disc 4 to rotate in the opposite direction relative to the cutter head main frame through the cooperation of the third gear 14 and the fourth gear 15 (reverse rotation means...). Figure 14(The tightening disc rotates clockwise). During the reverse rotation of the tightening disc 4 relative to the main cutter head frame, the tightening disc 4 simultaneously drives each take-up and release guide column 19 to move radially away from the pipe cutting channel through each take-up and release guide arc hole 20. Simultaneously, it drives each cutter holder 16 to move radially away from the pipe cutting channel, and then simultaneously drives each blade 17 and pressure roller 18 to move radially away from the pipe cutting channel, until each blade 17 and pressure roller 18 on each cutter holder 16 leaves the pipe 100.

[0082] The advantages of this invention are: (1) The cutting method combines a rotary cutter head assembly with radial feed blades. Multiple blades simultaneously perform extrusion cutting on the pipe, which greatly reduces the generation of metal chips during cutting, significantly improves the working environment, and reduces cleaning costs and subsequent processing burden.

[0083] (2) High cutting quality: Multiple blades are fed radially synchronously with the pressure roller, and the force is uniform. The blades are controlled by an independent drive mechanism, and the action is precise and reliable, ensuring that the cutting surface is flat and smooth, without burrs or edge flipping.

[0084] (3) The centering module and the traction centering module ensure that the pipe remains centered during the transportation process, further guaranteeing the cutting accuracy.

[0085] (4) High degree of automation and high production efficiency: It integrates the functions of automatic feeding, automatic straightening, automatic length detection, automatic cutting and automatic blade retraction of the traction self-aligning module, realizing the full automation of the pipe from loading to fixed length cutting and unloading; moreover, the high-speed rotation of the cutter head combined with the radial feed of the blade results in fast cutting speed and significantly higher efficiency than traditional sawing.

[0086] (5) Wide range of applications: Both the traction self-aligning module and the straightening module are designed with precise adjustment mechanisms, and the cutter head group adopts a unique radial feed structure, which can realize the conveying and cutting of different pipes within a certain diameter range.

[0087] (6) Reasonable structural design and stable operation: The cutter head assembly is supported by large bearings and driven to rotate by a motor, which makes the structure stable and the operation smooth; at the same time, the tightening plate is connected to the cutter head main frame through guide columns and concentric arc holes, which ensures the rotation accuracy and the synchronicity of the cutter head movement; the functional modules are compactly laid out and work together to ensure the reliability and stability of the whole machine operation.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any modifications or equivalent changes made based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. A chipless pipe cutting and blanking machine, characterized in that: The system includes an inlet guide wheel module, a pipe traction and self-aligning module, a pipe straightening module, a centering and holding module, and a pipe cutting module arranged sequentially along the pipe conveying direction. The inlet guide wheel module is used to smoothly guide the pipe into the pipe traction and self-aligning module. The pipe traction and self-aligning module is used to pull the pipe forward. The pipe straightening module is used to straighten the pipe. The centering and holding module is used to accurately guide the pipe into the pipe cutting module. The structure of the pipe cutting module is as follows: it includes a fixed base, a bearing, a cutter head assembly and a cutter head assembly rotation drive mechanism. The cutter head assembly is fixed to the outer ring of the bearing, the inner ring of the bearing is fixed to the fixed base, and the cutter head assembly rotation drive mechanism is connected to the cutter head assembly to drive the cutter head assembly to rotate. The structure of the cutter head assembly includes: a cutter head main frame and a tightening plate. The cutter head main frame is coaxially and fixedly connected to the outer ring of the bearing. The tightening plate is coaxially and movably mounted on the cutter head main frame. Through holes are provided at the center of both the cutter head main frame and the tightening plate. The through holes together form a pipe cutting channel. A tightening plate rotation drive mechanism is installed on the cutter head main frame. The tightening plate rotation drive mechanism is connected to the tightening plate to drive the tightening plate to rotate relative to the cutter head main frame. At least one tool holder is circumferentially arranged on the main cutter head frame. Each tool holder can only move radially along the main cutter head frame. A blade is provided at the end of the tool holder facing the pipe cutting channel. Each tool holder is equipped with a take-up / release guide post. A plurality of take-up / release guide arc-shaped holes, corresponding to the take-up / release guide posts of each tool holder, are circumferentially arranged on the tightening plate. The take-up / release guide post of each tool holder passes through the corresponding take-up / release guide arc-shaped hole of the tightening plate. The extension direction of each take-up / release guide arc-shaped hole is configured such that when the tightening plate is facing the main cutter head frame... When rotating, the tightening disc can drive each tool holder to move radially towards the pipe cutting channel simultaneously through the cooperation of each guide arc hole and guide post, thereby synchronously driving the blades on each tool holder to move radially towards the pipe cutting channel and cut the pipe in the pipe cutting channel; or when the tightening disc rotates in the opposite direction to the main cutter head, the tightening disc can drive each tool holder to move radially away from the pipe cutting channel simultaneously through the cooperation of each guide arc hole and guide post, thereby causing each blade on each tool holder to leave the pipe.

2. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: At least two tool holders are arranged circumferentially around the pipe cutting channel on the main cutter head frame. Each tool holder can only move radially along the main cutter head frame. At least one end of each tool holder facing the pipe cutting channel is equipped with a blade, and at least one end of each tool holder is equipped with a pressure roller that matches the blade. When the tightening plate rotates forward relative to the main cutter head frame, the tightening plate can drive each tool holder and pressure roller to move radially towards the pipe cutting channel simultaneously through the cooperation of each take-up and release guide arc hole and take-up and release guide post. This synchronously drives the blades and pressure rollers on each tool holder to move radially towards the pipe cutting channel and cooperate to cut the pipe in the pipe cutting channel. Alternatively, when the tightening plate rotates in the opposite direction relative to the main cutter head frame, the tightening plate can drive each tool holder and pressure roller to move radially away from the pipe cutting channel simultaneously through the cooperation of each take-up and release guide arc hole and take-up and release guide post. This causes the blades and pressure rollers on each tool holder to leave the pipe.

3. A chipless pipe cutting and blanking machine according to claim 1 or 2, characterized in that: The specific installation structure of the tightening disc on the cutter head main frame is as follows: The cutter head main frame includes a front plate and a back plate of the tightening disc arranged front and rear. The front plate and the back plate of the tightening disc are connected and fixed by several connecting columns to form the cutter head main frame. A through hole is provided in the center of both the front plate and the back plate of the tightening disc, and each through hole constitutes a through hole of the cutter head main frame. Several guide columns are supported between the front plate and the back plate of the tightening disc, arranged around the pipe cutting channel. Each guide column is located on the same circumference to form a rotating support frame of the tightening disc coaxial with the cutter head main frame. Several concentric arc holes corresponding to each guide column are provided on the tightening disc along the circumferential direction. The tightening disc is arranged between the front plate and the back plate of the tightening disc, and each guide column of the rotating support frame of the tightening disc passes through the corresponding concentric arc holes of the tightening disc, so that the tightening disc is coaxially and movably set on the cutter head main frame.

4. A chipless pipe cutting and blanking machine according to claim 1 or 2, characterized in that: The specific installation structure of each tool holder on the main frame of the cutter head is as follows: several first radial guide grooves are provided circumferentially on the end face of the front plate of the tightening plate facing the tightening plate, and several second radial guide grooves are provided circumferentially on the end face of the back plate of the tightening plate facing the tightening plate. Each first radial guide groove and each second radial guide groove correspond one-to-one to form several radial guide channels. Each radial guide channel corresponds one-to-one with each tool holder. Each tool holder is slidably installed in the corresponding radial guide channel, so that each tool holder can only move radially along the main frame of the cutter head.

5. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: The structure of the cutter head assembly rotary drive mechanism is as follows: a cutter head assembly rotary drive motor is installed at the bottom of the fixed base, a first gear is installed on the output shaft of the cutter head assembly rotary drive motor, and a second gear that meshes with the first gear is coaxially fixed on the cutter head main frame of the cutter head assembly. The cutter head assembly rotary drive motor drives the cutter head assembly to rotate through the cooperation of the first gear and the second gear.

6. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: The structure of the tightening disc rotation drive mechanism is as follows: a retracting motor is installed on the cutter head main frame, a third gear is installed on the output shaft of the retracting motor, and a fourth gear that meshes with the third gear is fixed on the outside of the tightening disc. The retracting motor drives the tightening disc to rotate relative to the cutter head main frame through the cooperation of the third gear and the fourth gear.

7. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: The structure of the alignment module is as follows: it includes an alignment seat fixed to a fixed base, and an alignment channel that runs through the front and rear of the alignment seat. The alignment channel is a tapered alignment channel with a diameter that gradually decreases along the forward conveying direction of the pipe. The small diameter end of the tapered alignment channel is adapted to the diameter of the pipe and is exactly aligned with the pipe cutting channel.

8. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: The structure of the pipe traction self-aligning module is as follows: it includes a first bracket, an upper traction wheel mounting bracket, and a lower traction wheel mounting bracket; symmetrical upper vertical guide grooves are arranged on the upper inner walls of the left and right side plates of the first bracket, the upper traction wheel mounting bracket is slidably disposed in the upper vertical guide grooves, the upper traction wheel is supported in the upper traction wheel mounting bracket by bearings, a first threaded hole is provided on the top plate of the first bracket above the upper traction wheel mounting bracket, an upper traction adjusting bolt is threaded into the first threaded hole, the screw of the upper traction adjusting bolt passes downward through the top plate of the first bracket and abuts against the upper traction wheel mounting bracket downward; symmetrical upper vertical guide grooves are arranged on the upper inner walls of the left and right side plates of the first bracket, the upper traction wheel mounting bracket is slidably disposed in the upper vertical guide grooves, the upper traction wheel is supported in the upper traction wheel mounting bracket by bearings, and a first threaded hole is provided on the top plate of the first bracket above the upper traction wheel mounting bracket, an upper traction adjusting bolt is threaded into the first threaded hole, the screw of the upper traction adjusting bolt passes downward through the top plate of the first bracket and abuts against the upper traction wheel mounting bracket; symmetrical upper vertical guide grooves are arranged on the upper inner walls of the left and right side plates of the first bracket, the upper traction wheel mounting bracket is slidably disposed in the upper vertical guide grooves, the upper traction wheel is slidably disposed in the upper vertical guide grooves, the upper traction wheel is supported ... vertical guide Symmetrical lower vertical guide grooves are arranged on the wall. The lower traction wheel mounting bracket is slidably disposed in the lower vertical guide grooves. The lower traction wheel is supported in the lower traction wheel mounting bracket by bearings. The lower traction wheel and the upper traction wheel are arranged vertically correspondingly. A second threaded hole is provided on the first bracket base plate below the lower traction wheel mounting bracket. A lower traction adjusting bolt is threaded into the second threaded hole. The screw of the lower traction adjusting bolt passes upward through the first bracket base plate and pushes upward against the lower traction wheel mounting bracket. The upper traction wheel and the lower traction wheel rotate simultaneously in opposite directions under the drive of the traction drive mechanism to pull and transport the pipe located between the upper traction wheel and the lower traction wheel.

9. A chipless pipe cutting and blanking machine according to claim 8, characterized in that: The traction drive mechanism is structured as follows: a second bracket is fixed to the outside of the first bracket; a traction motor is mounted on the second bracket; a driving traction gear is mounted on the output shaft of the traction motor; an upper rotating shaft and a lower rotating shaft, distributed vertically, are supported on the second bracket on one side of the driving traction gear; a first upper driven traction gear and a first upper transmission wheel are sequentially fixedly mounted axially on the shaft of the upper rotating shaft, and the first upper driven traction gear meshes with the driving traction gear; a first lower driven traction gear and a first lower transmission wheel are sequentially fixedly mounted axially on the shaft of the lower rotating shaft, and the first lower driven traction gear meshes with the first upper driven traction gear; the upper traction... The left and right side plates of the first bracket corresponding to the wheel mounting frame are provided with upper clearance vertical holes that do not obstruct the up and down movement of the upper traction wheel mounting frame. One side end of the axle of the upper traction wheel extends outward from the first bracket through the corresponding side upper clearance vertical hole and is fitted with a second upper transmission wheel. An upper transmission belt is wound between the second upper transmission wheel and the first upper transmission wheel. The left and right side plates of the first bracket corresponding to the lower traction wheel mounting frame are provided with lower clearance vertical holes that do not obstruct the up and down movement of the lower traction wheel mounting frame. One side end of the axle of the lower traction wheel extends outward from the first bracket through the corresponding side lower clearance vertical hole and is fitted with a second lower transmission wheel. A lower transmission belt is wound between the second lower transmission wheel and the first lower transmission wheel.

10. A chipless pipe cutting and blanking machine according to claim 1, characterized in that: The pipe straightening module has the following structure: it includes a third support, in which an upper straightening roller group and a lower straightening roller group are arranged vertically. A pipe straightening channel is formed between the upper straightening roller groups. The upper straightening roller group consists of several upper straightening rollers arranged at intervals along the pipe conveying direction. The upper straightening rollers are installed on the third support through an upper roller adjustment mechanism. The lower straightening roller group consists of several lower straightening rollers arranged at intervals along the pipe conveying direction. The lower straightening rollers are installed on the third support through a lower roller adjustment mechanism. The upper straightening rollers and the lower straightening rollers are staggered so that there is one upper straightening roller between every two adjacent lower straightening rollers. Under the drive of the corresponding roller adjustment mechanisms, the upper straightening roller group and the lower straightening roller group can move closer or further apart in the vertical direction to straighten the pipe passing through the pipe straightening channel.

11. A chipless pipe cutting and blanking machine according to claim 10, characterized in that: The structure of the lower roller adjustment mechanism is as follows: a lower vertical slide groove is provided at the lower part of the third bracket, a lower slide block is slidably arranged in the lower vertical slide groove, the lower straightening roller is movably supported on the lower slide block, a third threaded hole is provided on the bottom plate of the third bracket below the lower slide block, and a lower straightening bolt is threadedly connected in the third threaded hole. The screw of the lower straightening bolt passes upward through the bottom plate of the third bracket and pushes the lower slide block upward. The structure of the upper roller adjustment mechanism includes: an upper vertical slide groove is provided on the upper part of the third bracket, an upper slider is slidably arranged in the upper vertical slide groove, an upper straightening roller is movably supported on the upper slider, a fourth threaded hole is provided on the top plate of the third bracket above the upper slider, an upper straightening bolt is threadedly connected in the fourth threaded hole, and the screw of the upper straightening bolt passes downward through the top plate of the third bracket and presses against the upper slider downward.

12. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: The structure of the feed guide wheel module is as follows: it includes a feed guide wheel bracket, in which horizontal feed guide wheel groups and vertical feed guide wheel groups are alternately arranged along the pipe conveying direction. The horizontal feed guide wheel group consists of two feed guide wheels arranged vertically and horizontally in parallel, and the vertical feed guide wheel group consists of two feed guide wheels arranged horizontally and horizontally in parallel.

13. The chipless pipe cutting and blanking machine according to claim 1, characterized in that: A feeding length detection mechanism for detecting the feeding length of the pipe is also provided between the pipe straightening module and the pipe traction self-aligning module. The feeding length detection mechanism includes: a clamp, an encoder bracket and an encoder. The top of the clamp has two clamping parts arranged relatively apart, and the gap between the two clamping parts forms a clamping opening. A long shaft is fixed on the encoder bracket. The long shaft passes through the clamping opening between the two clamping parts so that the encoder bracket can rotate relative to the clamp through the long shaft. An encoder bracket locking mechanism is provided on the clamp to fix the encoder bracket to the clamp when the encoder bracket rotates to the position. The encoder is fixedly installed on the encoder bracket. A detection wheel is fixedly mounted on the output shaft of the encoder. The detection wheel is used to contact the pipe moving towards the pipe cutting channel and rotates synchronously with the pipe moving forward.

14. A chipless pipe cutting and blanking machine according to claim 13, characterized in that: The encoder bracket locking mechanism consists of a locking bolt and a locking nut. A through hole is provided in each of the two clamping parts of the clamping seat. The through holes of the two clamping parts are coaxial. The bolt of the locking bolt passes through the through holes of both clamping parts and is threadedly connected to the locking nut. When the locking nut is tightened, it engages with the locking bolt to drive the two clamping parts to move towards each other, clamping the long shaft on the encoder bracket, thereby locking and fixing the encoder bracket to the clamping seat.

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