A seamless steel pipe cutting device

Abstract

This invention relates to the field of metal pipe processing technology, specifically a seamless steel pipe cutting device. The invention includes a base plate, a feeding mechanism, a support mechanism, and a cutting mechanism. The cutting mechanism comprises a circumferential cutting assembly, an inner support mechanism, and an ejection assembly. The feeding mechanism and the support mechanism work together to achieve coaxial positioning and precise feeding of the seamless steel pipe. The inner support mechanism, through a hollow shaft, drives a support roller to form circumferential dynamic support inside the steel pipe, and, with pressure feedback, achieves precise adjustment to prevent pipe deformation. The circumferential cutting assembly achieves precise circumferential cutting through gear transmission and an electric push rod, adapting to steel pipes of different specifications. The ejection assembly performs end-face grinding while automatically unloading the pipe, and the fan blades simultaneously achieve cooling and chip removal.

Description

Technical Field

[0001] This invention relates to the field of metal cutting technology, and more particularly to the field of metal pipe processing technology, specifically a seamless steel pipe cutting device. Background Technology

[0002] Seamless steel pipe is a type of metal pipe made without joints through processes such as piercing and hot rolling. It has advantages such as high strength, good toughness, and corrosion resistance, and is widely used in fields such as machinery manufacturing and pipeline transportation. It often needs to be cut and processed into ring-shaped workpieces of specific sizes to meet assembly requirements.

[0003] Existing technologies include steel pipe cutting devices such as those disclosed in patent CN113210717B, which achieve a certain degree of stable cutting and resource recovery through the cooperation of an internal support assembly, a circumferential cutting mechanism, a cooling mechanism, and a recycling mechanism. However, existing technologies still have the following shortcomings:

[0004] The internal support component of the device is a static support mode. The outer periphery of the support ring formed by the arc plate and the telescopic sleeve is not a smooth transition surface. When it comes into contact with the inner wall of the steel pipe, it is easy to generate local stress concentration and poor support uniformity. Moreover, it can only provide internal support for one side of the steel pipe, and the other side lacks a corresponding support structure. During the cutting process, the radial cutting force can easily cause deformation and cut collapse on the unsupported side of the pipe, which has a more significant impact on the processing quality of thin-walled seamless steel pipes. Summary of the Invention

[0005] The purpose of this invention is to provide a seamless steel pipe cutting device to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A seamless steel pipe cutting device includes a base plate, on the top surface of which a feeding mechanism, a support mechanism, and a cutting mechanism are fixedly mounted. The cutting mechanism includes:

[0008] A ring-cutting assembly, including a rotating drum, is fixedly mounted on a base plate;

[0009] An inner support mechanism fixedly installed in the rotating drum is used to support the steel pipe on both sides of the circumferential cutting trajectory inside the seamless steel pipe. The inner support mechanism includes a hollow shaft.

[0010] The ejection assembly, which is fixedly installed on the periphery of the hollow shaft, is used to automatically eject the cut ring-shaped workpiece from the rotating drum, and at the same time, it works in conjunction with the inner support mechanism to grind one end face of the workpiece.

[0011] Furthermore, the ring-cutting assembly includes a support base fixedly mounted on the base plate, an mounting ring fixedly mounted on the top of the support base, a rotating cylinder rotatably mounted in the mounting ring, a driven gear fixedly mounted on the outer periphery of the rotating cylinder near the rear end, and a cutting assembly fixedly mounted on the outer periphery of the rotating cylinder near the front end.

[0012] A boss is fixedly installed on the rear side of the support base, and a motor is fixedly installed on the boss. A drive gear is fixedly installed on the output shaft end of the motor, and the drive gear meshes with the driven gear.

[0013] Furthermore, the cutting assembly includes a mounting plate fixedly installed on the periphery of the rotating drum. Fixed seats are fixedly installed at both ends of the side of the mounting plate. Two guide rails are fixedly connected between the two fixed seats. A slide is slidably installed on both guide rails. A first mounting seat is fixedly installed on the side of the slide away from the mounting plate. A cutting saw is fixedly installed on the side of the first mounting seat away from the slide.

[0014] An electric push rod is fixedly installed on the outer side of the fixed base away from the rotating drum. The telescopic end of the electric push rod slides through the fixed base and is fixedly connected to the end of the mounting base.

[0015] Furthermore, the internal support mechanism includes a second boss fixedly installed at the rear end of the rotating drum and a bearing seat coaxially arranged in the rotating drum near the rear end. Multiple connecting rods arranged in a circumferential array are fixedly connected between the outer periphery of the bearing seat and the inner wall of the rotating drum. The hollow shaft rotates through the bearing seat, and both ends of the hollow shaft are located outside the rotating drum.

[0016] An internal support assembly is fixedly installed through the front end of the hollow shaft, and an adjustment assembly is fixedly installed through the rear end of the hollow shaft. The adjustment assembly is used to adjust the support force and support diameter of the internal support assembly.

[0017] A second motor is fixedly mounted on the second protrusion, and a drive pulley is fixedly mounted on the output shaft end of the second motor.

[0018] A driven pulley aligned with the driving pulley is fixedly installed on the periphery of the hollow shaft, and a belt is installed between the driven pulley and the driving pulley.

[0019] Furthermore, the internal support assembly includes a flow-dividing hollow disk that is fixedly installed through the front end of the hollow shaft. Multiple sets of circumferentially arrayed hollow columns are fixedly installed through the periphery of the flow-dividing hollow disk. A piston 2 is slidably installed in the hollow column. A rectangular rod is fixedly installed at the end of the piston 2 away from the flow-dividing hollow disk. The end of the rectangular rod away from the piston 2 slides through the end of the hollow column away from the flow-dividing hollow disk and is then fixedly installed with an installation block.

[0020] Mounting base two is fixedly installed at both ends on the side of the mounting block away from the rectangular rod. A support roller one parallel to the hollow shaft is rotatably installed between the two mounting base two. An annular clearance groove aligned with the cutter of the circumferential cutting assembly is opened at the middle of the outer periphery of the support roller one.

[0021] Furthermore, the adjustment assembly includes a hydraulic cylinder that is fixedly installed through the rear end of the hollow shaft. A piston is slidably installed in the hydraulic cylinder. A lead screw is rotatably connected to the side of the piston away from the hollow shaft. A knob is fixedly installed at the end of the lead screw away from the piston after it is threaded through the end of the hydraulic cylinder.

[0022] A pressure sensor for sensing hydraulic oil pressure is installed on the side of the piston near the hollow shaft, and a pressure display panel for displaying the data sensed by the pressure sensor is installed on the side of the knob.

[0023] Furthermore, the ejection assembly includes a fixing ring fixedly installed at the center of the periphery of the hollow shaft. An internally threaded cylinder sleeved on the periphery of the hollow shaft is fixedly connected to the side of the fixing ring near the diverting hollow disc. An externally threaded cylinder sleeved on the periphery of the hollow shaft is threadedly connected to the end of the internally threaded cylinder near the diverting hollow disc. A handle is fixedly installed on the periphery of the externally threaded cylinder at the end away from the internally threaded cylinder.

[0024] A spring is fixedly connected to one end of the fixed ring near the hollow distributor disc. The spring is sleeved around the hollow shaft and located in the external threaded cylinder. A collar that is slidably sleeved around the hollow shaft is fixedly connected to the other end of the spring away from the fixed ring. The collar is located between the hollow distributor disc and the external threaded cylinder.

[0025] The collar is fixedly connected to a plurality of top rods equal in number to the plurality of hollow columns on the side near the splitter hollow disk. The plurality of top rods are arranged in a circumferential array about the axis of the collar, and the plurality of top rods and the plurality of hollow columns are circumferentially staggered.

[0026] The top rod is fixedly connected to an abutment strip perpendicular to the axis of the hollow shaft at one end near the diverter disc. Sandpaper is detachably fixedly installed on the side of the abutment strip away from the top rod.

[0027] Multiple fan blades arranged in a circumferential array are fixedly installed on the periphery of the fixed ring.

[0028] Furthermore, the feeding mechanism includes two mounting seats three fixedly installed on the top surface of the base plate, two slide rails fixedly connected between the two mounting seats three, a slider slidably installed on the two slide rails, a support seat two fixedly installed on the top surface of the slider, and a hollow electric three-jaw chuck coaxial with the rotary drum fixedly installed at the top of the support seat two, and a plurality of evenly distributed balls embedded in the inner wall of the hollow electric three-jaw chuck;

[0029] A screw is rotatably mounted between the two mounting bases, and the screw is connected to the slider by a through thread.

[0030] A motor is fixedly mounted on the outer side of the mounting base three, which is away from the cutting mechanism. The end of the screw close to the motor three rotates through the mounting base three at the corresponding position and is fixedly connected to the output shaft end of the motor three.

[0031] Furthermore, the support mechanism is disposed between the cutting mechanism and the feeding mechanism. The support mechanism includes an electric push rod II fixedly installed on the top surface of the base plate. A V-shaped seat is fixedly installed on the telescopic end of the electric push rod II. Support roller II is rotatably installed at both ends of the top surface of the V-shaped seat.

[0032] Furthermore, a control panel electrically connected to the cutting mechanism, the feeding mechanism, and the support mechanism is provided on the top surface of the base plate.

[0033] The beneficial effects of this invention are:

[0034] 1. The internal support mechanism of the present invention forms circumferential dynamic support through support rollers, and achieves precise adjustment of support force in conjunction with pressure sensor and pressure display panel, effectively avoiding pipe deformation and cut collapse, especially suitable for thin-walled steel pipes, and significantly improving the roundness of the ring and the flatness of the cut.

[0035] 2. The ejector assembly of the present invention integrates automatic feeding, end face grinding, cooling and chip removal functions. After cutting, the spring drives the ejector assembly to automatically eject the workpiece, eliminating the need for manual removal. End face grinding eliminates subsequent processes. The fan blades simultaneously achieve cooling and chip removal, significantly improving production efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0038] Figure 2This is a three-dimensional schematic diagram of the cutting mechanism in this invention;

[0039] Figure 3 yes Figure 2 Enlarged view of section A;

[0040] Figure 4 yes Figure 2 Enlarged view of section B;

[0041] Figure 5 yes Figure 2 A three-dimensional diagram from another angle;

[0042] Figure 6 yes Figure 5 Enlarged view of section C;

[0043] Figure 7 This is a three-dimensional schematic diagram of the connection relationship between the ejector component and the hollow shaft in this invention;

[0044] Figure 8 yes Figure 7 Enlarged view of section D;

[0045] Figure 9 This is a schematic diagram of the internal support component in this invention;

[0046] Figure 10 This is a schematic diagram of the structure of the support roller one in this invention;

[0047] Figure 11 This is a schematic diagram of the connection relationship between the adjustment component, the hollow shaft, and the inner support component in this invention;

[0048] Figure 12 This is a three-dimensional schematic diagram of the feeding mechanism and the support mechanism in this invention;

[0049] The attached figures are labeled as follows:

[0050] 1-Base plate, 2-Cutting mechanism, 3-Feed mechanism, 4-Support mechanism, 5-Support seat one, 6-Mounting ring, 7-Rotating drum, 8-Driven gear, 9-Boss one, Motor one, 10-Motor one, Driving gear, 11-Driving gear, Boss two, 12-Boss two, Bearing seat, 13-Bearing seat, Connecting rod, 14-Connecting rod, 15-Motor two, 16-Driving pulley, 17-Belt, 18-Driven pulley, 19-Hydraulic cylinder, 20-Hollow shaft, 21-Lead screw, 22-Knob, 23-Pressure display panel, 24-Cutting assembly, 25-Mounting plate, 26-Fixed seat, 27-Guide rail, 28-Slide, 29-Mounting seat one, 30-Cutting saw, 31-Electric Push rod 1, 32-fan blade, 33-internal threaded cylinder, 34-external threaded cylinder, 35-handle, 36-spring, 37-ring, 38-push rod, 39-abutting strip, 40-diverter hollow disc, 41-hollow column, 42-rectangular rod, 43-mounting block, 44-mounting seat 2, 45-support roller 1, 46-annular clearance groove, 47-piston 2, 48-piston 1, 49-pressure sensor, 50-mounting seat 3, 51-motor 3, 52-slide rail, 53-screw, 54-slider, 55-support seat 2, 56-hollow electric three-jaw chuck, 57-ball bearing, 58-electric push rod 2, 59-V-shaped seat, 60-support roller 2, 61-fixed ring. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Example 1: Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 7 , Figure 8 and Figure 11 In this embodiment of the invention, a seamless steel pipe cutting device includes a base plate 1. A feeding mechanism 3, a support mechanism 4, and a cutting mechanism 2 are fixedly installed on the top surface of the base plate 1. The cutting mechanism 2 includes:

[0053] The circumferential cutting assembly, including the rotating drum 7, is fixedly installed on the base plate 1;

[0054] An inner support mechanism is fixedly installed in the rotating drum 7 to support the steel pipe on both sides of the circumferential cutting trajectory inside the seamless steel pipe. The inner support mechanism includes a hollow shaft 20.

[0055] The ejection assembly, which is fixedly installed on the periphery of the hollow shaft 20, is used to automatically eject the cut ring-shaped workpiece from the rotating drum 7, and at the same time, it works in conjunction with the inner support mechanism to grind one end face of the workpiece.

[0056] When using this invention:

[0057] The seamless steel pipe is clamped by the feeding mechanism 3 and supported by the support mechanism 4 to ensure coaxiality with the rotating drum 7. The feeding mechanism 3 pushes the end of the steel pipe into the circumferential cutting component area of ​​the cutting mechanism 2. The inner support mechanism 20 forms support on both sides of the cutting trajectory inside the steel pipe. Then, the circumferential cutting component starts to complete the cutting. During the cutting process, the end of the steel pipe is elastically squeezed by the ejection component, and the end face of one end is polished simultaneously. After cutting, the feeding mechanism 3 drives the steel pipe to retract, and the ejection component automatically ejects the ring-shaped workpiece. Compared with the prior art, the present invention has automatic feeding and end face polishing functions, eliminating the need for manual part removal and subsequent polishing processes. At the same time, the inner support mechanism 20 forms precise support from both sides of the cutting trajectory, avoiding the problem of cut collapse that may be caused by the single inner support in the prior art. It is especially suitable for thin-walled steel pipes and improves the processing quality of the ring.

[0058] Example 2: Please refer to Figure 2 and Figures 5-8 Based on Embodiment 1, the ring cutting assembly includes a support base 5 fixedly installed on the base plate 1, an installation ring 6 fixedly installed at the top of the support base 5, a rotating cylinder 7 rotatably installed in the installation ring 6, a driven gear 8 fixedly installed on the outer periphery of the rotating cylinder 7 near the rear end, and a cutting assembly 24 fixedly installed on the outer periphery of the rotating cylinder 7 near the front end.

[0059] A boss 9 is fixedly installed on the rear side of the support base 5. A motor 10 is fixedly installed on the boss 9. A drive gear 11 is fixedly installed on the output shaft end of the motor 10. The drive gear 11 meshes with the driven gear 8.

[0060] The cutting assembly 24 includes a mounting plate 25 fixedly installed on the periphery of the rotating drum 7. Fixing seats 26 are fixedly installed at both ends of the side of the mounting plate 25. Two guide rails 27 are fixedly connected between the two fixing seats 26. A slide block 28 is slidably installed on the two guide rails 27. A mounting seat 29 is fixedly installed on the side of the slide block 28 away from the mounting plate 25. A cutting saw 30 is fixedly installed on the side of the mounting seat 29 away from the slide block 28.

[0061] An electric push rod 31 is fixedly installed on the outer side of the fixed base 26 away from the rotating drum 7. The telescopic end of the electric push rod 31 slides through the fixed base 26 and is fixedly connected to the corresponding end of the mounting base 29.

[0062] Based on Embodiment 1, motor 10 drives the rotating drum 7 to rotate via the meshing of the driving gear 11 and the driven gear 8. The rotating drum 7 drives the cutting assembly 24 to rotate synchronously to achieve circumferential cutting. The electric push rod 31 extends and retracts to drive the slide block 28 to slide along the guide rail 27, driving the cutting saw 30 to feed radially to complete the cut. In this embodiment, gear transmission ensures the rotational stability of the rotating drum 7, and the feed distance of the cutting saw 30 can be precisely adjusted by the electric push rod 31. This not only results in higher cutting accuracy but also allows for flexible adaptation to seamless steel pipes of different diameters, improving the versatility of the equipment.

[0063] Example 3: Please refer to Figures 2-4 and Figures 7-11 Based on embodiment 1, the internal support mechanism includes a second boss 12 fixedly installed at the rear end of the rotating cylinder 7 and a bearing seat 13 coaxially arranged in the rotating cylinder 7 near the rear end. Multiple connecting rods 14 arranged in a circumferential array are fixedly connected between the outer periphery of the bearing seat 13 and the inner wall of the rotating cylinder 7. The hollow shaft 20 rotates through the bearing seat 13, and both ends of the hollow shaft 20 are located outside the rotating cylinder 7.

[0064] An internal support assembly is fixedly installed through the front end of the hollow shaft 20, and an adjustment assembly is fixedly installed through the rear end of the hollow shaft 20. The adjustment assembly is used to adjust the support force and support diameter of the internal support assembly.

[0065] A motor 15 is fixedly mounted on the second boss 12, and a drive pulley 16 is fixedly mounted on the output shaft end of the motor 15.

[0066] A driven pulley 18 aligned with the driving pulley 16 is fixedly installed on the periphery of the hollow shaft 20, and a belt 17 is installed between the driven pulley 18 and the driving pulley 16.

[0067] Based on Example 1, motor 215 drives hollow shaft 20 to rotate via drive pulley 16, belt 17, and driven pulley 18. Hollow shaft 20 drives inner support assembly to rotate, and adjustment assembly adapts the support force and diameter of inner support assembly to match the inner diameter of steel pipe. This configuration achieves active rotational dynamic support of inner support assembly, resulting in stronger support uniformity and roundness correction for thin-walled pipes. Furthermore, the support parameters can be actively adjusted to accommodate more specifications of steel pipes.

[0068] Example 4: Please refer to Figures 7-11 Based on embodiment 3, the internal support assembly includes a diversion hollow disk 40 that is fixedly installed through the front end of the hollow shaft 20. Multiple sets of circumferentially arrayed hollow columns 41 are fixedly installed through the periphery of the diversion hollow disk 40. A piston 47 is slidably installed in the hollow column 41. A rectangular rod 42 is fixedly installed at the end of the piston 47 away from the diversion hollow disk 40. The end of the rectangular rod 42 away from the piston 47 slides through the end of the hollow column 41 away from the diversion hollow disk 40 and is then fixedly installed with an installation block 43.

[0069] Mounting blocks 43 are fixedly mounted at both ends on the side away from rectangular rods 42. A support roller 45 parallel to the hollow shaft 20 is rotatably mounted between the two mounting blocks 44. An annular clearance groove 46 aligned with the cutter of the circumferential cutting assembly is provided at the middle of the outer periphery of the support roller 45.

[0070] Based on Example 3, the adjusting component presses hydraulic oil into the distribution hollow disk 40 via the hollow shaft 20. The distribution hollow disk 40 distributes the hydraulic oil to each hollow column 41, pushing the piston 47 to extend the rectangular rod 42, causing the support roller 45 to roll into contact with the inner wall of the steel pipe. The annular clearance groove 46 of the support roller 45 provides clearance space for the circumferential cutting tool. This setup achieves synchronous extension and retraction of the support roller 45 through hydraulic drive, resulting in high support stability. The annular clearance groove 46 ensures that the cutting process is not disturbed, and the rolling contact reduces wear on the inner wall of the steel pipe. At the same time, it achieves simultaneous dynamic support on both sides of the cut, improving processing accuracy.

[0071] Example 5: Please refer to Figures 2-4 , Figure 7 and Figure 11 Based on embodiment 3, the adjustment component includes a cylinder 19 that is fixedly installed at the rear end of the hollow shaft 20. A piston 48 is slidably installed in the cylinder 19. A lead screw 21 is rotatably connected to the side of the piston 48 away from the hollow shaft 20. A knob 22 is fixedly installed at the end of the lead screw 21 away from the piston 48 after it is threaded through the end of the cylinder 19.

[0072] A pressure sensor 49 for sensing hydraulic oil pressure is installed on the side of piston 48 near hollow shaft 20, and a pressure display panel 23 for displaying the data sensed by pressure sensor 49 is installed on the side of knob 22.

[0073] Based on Example 3, rotating knob 22 drives lead screw 21 to rotate, which in turn drives piston 48 to move within cylinder 19, realizing the injection and return of hydraulic oil. Pressure sensor 49 senses the hydraulic oil pressure and displays it in real time via pressure display panel 23. This setting achieves precise preset and adjustment of support force through lead screw transmission. Pressure display panel 23 provides intuitive feedback on support parameters, allowing operators to flexibly adjust the force according to the steel pipe material and thickness, avoiding problems of excessive or insufficient support force, and improving processing controllability and product consistency.

[0074] Example 6: Please refer to Figure 7 , Figure 8 and Figure 11Based on embodiment 4, the ejection assembly includes a fixing ring 61 fixedly installed at the center of the periphery of the hollow shaft 20. An internal threaded cylinder 33 sleeved on the periphery of the hollow shaft 20 is fixedly connected to the side of the fixing ring 61 near the diversion hollow disk 40. An external threaded cylinder 34 sleeved on the periphery of the hollow shaft 20 is threadedly connected to one end of the internal threaded cylinder 33 near the diversion hollow disk 40. A handle 35 is fixedly installed on the periphery of the external threaded cylinder 34 at the end away from the internal threaded cylinder 33.

[0075] A spring 36 is fixedly connected to one end of the fixed ring 61 near the flow divider hollow disc 40. The spring 36 is sleeved on the periphery of the hollow shaft 20 and located in the external threaded cylinder 34. A collar 37 is fixedly connected to the other end of the spring 36 away from the fixed ring 61. The collar 37 is slidably sleeved on the periphery of the hollow shaft 20 and is located between the flow divider hollow disc 40 and the external threaded cylinder 34.

[0076] Multiple push rods 38, equal in number to the number of hollow columns 41, are fixedly connected to the side of the collar 37 near the flow-diverting hollow disk 40. The multiple push rods 38 are arranged in a circumferential array about the axis of the collar 37, and the multiple push rods 38 and the multiple hollow columns 41 are circumferentially staggered.

[0077] One end of the push rod 38 near the flow-dividing hollow disc 40 is fixedly connected to an abutment strip 39 perpendicular to the axis of the hollow shaft 20. Sandpaper is detachably fixedly installed on the side of the abutment strip 39 away from the push rod 38.

[0078] Multiple fan blades 32 arranged in a circumferential array are fixedly installed on the periphery of the fixed ring 61.

[0079] Based on Example 4, the steel pipe end presses against the contact strip 39, causing the collar 37 to compress the spring 36. The end of the external threaded cylinder 34 limits the collar 37 to control the insertion length of the steel pipe. During the cutting process, the hollow shaft 20 drives the push rod 38 and the contact strip 39 to rotate. The workpiece end face is polished by sandpaper. After cutting, the spring 36 returns to its original position, pushing the collar 37 out of the workpiece. At the same time, the fan blade 32 rotates with the hollow shaft 20 to generate airflow to cool the tool and disperse waste chips. In this example, the fan blade 32 actively generates airflow, providing timely cooling and actively dispersing waste chips to prevent their accumulation. It also achieves automatic material feeding and end face polishing functions. The length of the ring can be quickly adjusted via the external threaded cylinder 34, improving processing efficiency.

[0080] Example 7: Please refer to Figure 1 and Figure 12Based on embodiment 1, the feeding mechanism 3 includes two mounting bases 50 fixedly mounted on the top surface of the base plate 1. Two slide rails 52 are fixedly connected between the two mounting bases 50. A slider 54 is slidably mounted on both slide rails 52. A support base 55 is fixedly mounted on the top surface of the slider 54. A hollow electric three-jaw chuck 56 coaxial with the rotating drum 7 is fixedly mounted on the top of the support base 55. A plurality of evenly distributed balls 57 are embedded in the inner wall of the hollow electric three-jaw chuck 56.

[0081] A screw 53 is rotatably mounted between two mounting bases 50, and the screw 53 is connected to the slider 54 by a through thread.

[0082] A motor 51 is fixedly mounted on the outer side of the mounting base 50 away from the cutting mechanism 2. The end of the screw 53 near the motor 51 rotates through the mounting base 50 at the corresponding position and is fixedly connected to the output shaft end of the motor 51.

[0083] Based on Example 1, the steel pipe is passed through the hollow electric three-jaw chuck 56 and placed on the support mechanism 4. The hollow electric three-jaw chuck 56 clamps the tail end of the steel pipe to achieve coaxial positioning. The motor 51 drives the screw 53 to rotate, which drives the slider 54 to slide along the slide rail 52 to achieve precise feeding and retraction of the steel pipe.

[0084] The use of ball bearings 57 reduces wear on the outer diameter of the steel pipe.

[0085] Example 8: Please refer to Figure 1 and Figure 12 Based on embodiment 1, the support mechanism 4 is set between the cutting mechanism 2 and the feeding mechanism 3. The support mechanism 4 includes an electric push rod 58 fixedly installed on the top surface of the base plate 1. A V-shaped seat 59 is fixedly installed at the telescopic end of the electric push rod 58. Support rollers 60 are rotatably installed at both ends of the top surface of the V-shaped seat 59.

[0086] Based on Example 1, the steel pipe rests on the second support roller 60, and the electric push rod 58 extends and retracts to adjust the height of the V-shaped seat 59, so that the steel pipe and the rotating drum 7 remain coaxial. The second support roller 60 and the steel pipe roll in contact with the feeding mechanism 3 to achieve feeding.

[0087] The V-shaped seat 59 ensures support stability through its guiding and converging effect. Its height-adjustable design can actively adapt to steel pipes of different diameters. Rolling contact reduces feed resistance and improves feed smoothness.

[0088] Example 9: A control panel electrically connected to the cutting mechanism 2, the feeding mechanism 3 and the support mechanism 4 is provided on the top surface of the base plate 1.

[0089] The control panel establishes an electrical connection with drive components such as Motor 10, Motor 2 15, Motor 3 51, and Electric Push Rod 31 through a preset control program. Operators can input parameters such as ring length, cutting speed, and support pressure via touch buttons or knobs on the panel. After receiving the instructions, the control panel sends electrical signals to the corresponding drive components through its built-in circuitry, controlling the start / stop, speed adjustment, and extension / retraction adjustment of the drive components (e.g., the extension / retraction of Electric Push Rod 31 controls the cutting feed). Simultaneously, the control panel can receive feedback signals from components such as Pressure Sensor 49 in real time, displaying information such as current support pressure and processing progress on the panel display screen for easy monitoring and adjustment by operators.

[0090] Its core is to achieve centralized control and parameter adjustment of the driving components through circuit connection. Similar automated control logic has been widely used in machine tools, pipe processing equipment and other fields. It has mature circuit design schemes, control program frameworks and hardware adaptation standards. The stability and reliability of control can be guaranteed by using existing technology.

[0091] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A seamless steel pipe cutting device, comprising a base plate (1), wherein a feeding mechanism (3), a support mechanism (4), and a cutting mechanism (2) are fixedly mounted on the top surface of the base plate (1), characterized in that, The cutting mechanism (2) includes: The ring-cutting assembly, including a rotating drum (7), is fixedly installed on the base plate (1). An inner support mechanism is fixedly installed in the rotating drum (7) to support the steel pipe on both sides of the circumferential trajectory inside the seamless steel pipe. The inner support mechanism includes a hollow shaft (20). The ejection assembly, which is fixedly installed on the periphery of the hollow shaft (20), is used to automatically eject the cut ring workpiece from the rotating drum (7), and at the same time, it works with the inner support mechanism to grind one end face of the workpiece. The internal support mechanism includes a second boss (12) fixedly installed at the rear end of the rotating drum (7) and a bearing seat (13) coaxially arranged in the rotating drum (7) near the rear end. Multiple connecting rods (14) arranged in a circumferential array are fixedly connected between the outer periphery of the bearing seat (13) and the inner wall of the rotating drum (7). The hollow shaft (20) rotates through the bearing seat (13), and both ends of the hollow shaft (20) are located outside the rotating drum (7). An inner support assembly is fixedly installed through the front end of the hollow shaft (20), and an adjustment assembly is fixedly installed through the rear end of the hollow shaft (20). The adjustment assembly is used to adjust the support force and support diameter of the inner support assembly. A motor (15) is fixedly installed on the second boss (12), and a drive pulley (16) is fixedly installed on the output shaft end of the second motor (15). A driven pulley (18) aligned with the driving pulley (16) is fixedly installed on the periphery of the hollow shaft (20), and a belt (17) is installed between the driven pulley (18) and the driving pulley (16). The internal support assembly includes a flow-dividing hollow disk (40) that is fixedly installed through the front end of the hollow shaft (20). Multiple sets of hollow columns (41) arranged in a circumferential array are fixedly installed through the periphery of the flow-dividing hollow disk (40). A piston (47) is slidably installed in the hollow column (41). A rectangular rod (42) is fixedly installed at the end of the piston (47) away from the flow-dividing hollow disk (40). An installation block (43) is fixedly installed at the end of the rectangular rod (42) away from the piston (47) that slides through the end of the hollow column (41) away from the flow-dividing hollow disk (40). Mounting blocks (43) are fixedly mounted at both ends on the side away from the rectangular rod (42). A support roller (45) parallel to the hollow shaft (20) is rotatably mounted between the two mounting blocks (44). An annular clearance groove (46) aligned with the cutter of the ring cutting assembly is opened at the middle of the outer periphery of the support roller (45). The adjustment assembly includes a cylinder (19) that is fixedly installed at the rear end of the hollow shaft (20). A piston (48) is slidably installed in the cylinder (19). A lead screw (21) is rotatably connected to the side of the piston (48) away from the hollow shaft (20). A knob (22) is fixedly installed at the end of the lead screw (21) away from the piston (48) after it is threaded through the end of the cylinder (19). A pressure sensor (49) for sensing hydraulic oil pressure is installed on the side of the piston (48) near the hollow shaft (20), and a pressure display panel (23) for displaying the data sensed by the pressure sensor (49) is installed on the side of the knob (22).

2. The seamless steel pipe cutting device according to claim 1, characterized in that, The ring cutting assembly includes a support base (5) fixedly installed on the base plate (1), an installation ring (6) fixedly installed at the top of the support base (5), a rotating cylinder (7) rotatably installed in the installation ring (6), a driven gear (8) fixedly installed on the outer periphery of the rotating cylinder (7) near the rear end, and a cutting assembly (24) fixedly installed on the outer periphery of the rotating cylinder (7) near the front end. A boss (9) is fixedly installed on the rear side of the support base (5), and a motor (10) is fixedly installed on the boss (9). A drive gear (11) is fixedly installed on the output shaft end of the motor (10), and the drive gear (11) meshes with the driven gear (8).

3. The seamless steel pipe cutting device according to claim 2, characterized in that, The cutting assembly (24) includes a mounting plate (25) fixedly installed on the periphery of the rotating drum (7). Fixing seats (26) are fixedly installed at both ends of the side of the mounting plate (25). Two guide rails (27) are fixedly connected between the two fixing seats (26). A slide (28) is slidably installed on the two guide rails (27). A mounting seat (29) is fixedly installed on the side of the slide (28) away from the mounting plate (25). A cutting saw (30) is fixedly installed on the side of the mounting seat (29) away from the slide (28). An electric push rod (31) is fixedly installed on the outer side of the fixed seat (26) away from the rotating drum (7). The telescopic end of the electric push rod (31) slides through the fixed seat (26) and is fixedly connected to the end of the mounting seat (29).

4. A seamless steel pipe cutting device according to claim 3, characterized in that, The ejection assembly includes a fixing ring (61) fixedly installed at the center of the periphery of the hollow shaft (20). The fixing ring (61) is fixedly connected to an internal threaded cylinder (33) sleeved on the periphery of the hollow shaft (20) on the side near the diversion hollow disk (40). An external threaded cylinder (34) sleeved on the periphery of the hollow shaft (20) is threadedly connected to one end of the internal threaded cylinder (33) near the diversion hollow disk (40). A handle (35) is fixedly installed on the periphery of the external threaded cylinder (34) at the end away from the internal threaded cylinder (33). A spring (36) is fixedly connected to one end of the fixed ring (61) near the flow-dividing hollow disc (40). The spring (36) is sleeved on the periphery of the hollow shaft (20) and located in the external threaded cylinder (34). A collar (37) that is slidably sleeved on the periphery of the hollow shaft (20) is fixedly connected to one end of the spring (36) away from the fixed ring (61). The collar (37) is located between the flow-dividing hollow disc (40) and the external threaded cylinder (34). The collar (37) is fixedly connected to a plurality of top rods (38) equal in number to the plurality of hollow columns (41) on the side near the diversion hollow disk (40). The plurality of top rods (38) are arranged in a circumferential array about the axis of the collar (37), and the plurality of top rods (38) and the plurality of hollow columns (41) are circumferentially staggered. The top rod (38) is fixedly connected to an abutment strip (39) perpendicular to the axis of the hollow shaft (20) at one end near the diversion hollow disc (40). Sandpaper is detachably fixedly installed on the side of the abutment strip (39) away from the top rod (38). The outer periphery of the fixed ring (61) is fixedly installed with multiple fan blades (32) arranged in a circumferential array.

5. A seamless steel pipe cutting device according to claim 1, characterized in that, The feeding mechanism (3) includes two mounting bases (50) fixedly mounted on the top surface of the base plate (1). Two slide rails (52) are fixedly connected between the two mounting bases (50). A slider (54) is slidably mounted on the two slide rails (52). A support base (55) is fixedly mounted on the top surface of the slider (54). A hollow electric three-jaw chuck (56) coaxial with the rotary drum (7) is fixedly mounted on the top of the support base (55). A plurality of evenly distributed balls (57) are embedded in the inner wall of the hollow electric three-jaw chuck (56). A screw (53) is rotatably mounted between the two mounting bases (50), and the screw (53) is connected to the slider (54) by a through thread. A motor three (51) is fixedly installed on the outer side of the mounting base three (50) away from the cutting mechanism (2). The end of the screw (53) close to the motor three (51) rotates through the mounting base three (50) at the corresponding position and is fixedly connected to the output shaft end of the motor three (51).

6. A seamless steel pipe cutting device according to claim 1, characterized in that, The support mechanism (4) is located between the cutting mechanism (2) and the feeding mechanism (3). The support mechanism (4) includes an electric push rod (58) fixedly installed on the top surface of the base plate (1). A V-shaped seat (59) is fixedly installed on the telescopic end of the electric push rod (58). Support rollers (60) are rotatably installed at both ends of the top surface of the V-shaped seat (59).

7. A seamless steel pipe cutting device according to claim 1, characterized in that, The top surface of the base plate (1) is provided with a control panel that is electrically connected to the cutting mechanism (2), the feeding mechanism (3) and the support mechanism (4).

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