A steel pipe cutting machine

Abstract

This invention belongs to the field of steel pipe cutting technology and discloses a steel pipe cutting machine, including a cutting machine tool. A cutting tool is installed and connected on the cutting machine tool. Two electric telescopic rods are fixedly connected to the cutting machine tool. Four hollow clamps are provided on the sides of the two electric telescopic rods, with each pair of symmetrical hollow clamps forming a group. The symmetrical arrangement of the hollow clamps, combined with the electric telescopic rods, enables the clamps to open and close for positioning. Combined with a negative pressure locking structure, four steel pipes can be clamped simultaneously for synchronous cutting. Equipped with a threshold pressure sensor, the machine only outputs a signal to activate the corresponding micro-motor when the pressure on the steel pipe reaches a set value; otherwise, it does not activate. This accurately determines whether multiple steel pipes are aligned, avoiding false triggering. Four independent drive mechanisms correspond to the four steel pipes, allowing for individual correction of misaligned pipes, ensuring all steel pipes remain on the same horizontal line. This lays the foundation for subsequent precise cutting and reduces the probability of skewed cuts and dimensional deviations.

Description

Technical Field

[0001] This invention belongs to the field of steel pipe cutting technology, specifically a steel pipe cutting machine. Background Technology

[0002] Steel pipe cutting machines are mechanical cutting machine tools used for cutting metal profiles such as pipes and bars. They remove material by sawing or shearing to cut the pipe. They include the machine bed, cutting spindle, cutting tool holder, feed mechanism, and clamping device. Among them, sawing cutting machines (such as metal band saws and circular saws) remove material by continuous or intermittent cutting with saw blades or saw blades with cutting edges. This meets the core definition of metal cutting machine tools as "removing excess metal with tools" and belongs to the category of metal cutting machine tools.

[0003] In metal tube cutting operations on machine tools, when multiple steel tubes are stacked and fed for cutting, the existing cutting machine tool feeding system generally adopts a servo slide clamping feeding mechanism as the core structure for conveying long tubes. For long tubes, it is not possible to use the end-feed feeding method to convey the tubes. Therefore, the clamping feeding mechanism has insufficient stability and low clamping positioning and limit accuracy. When the equipment continuously pushes the stacked tubes forward, the tubes are prone to slight shaking and slippage. Due to the lack of a precise limit correction structure and real-time status monitoring structure, the stacked steel tubes are prone to misalignment and displacement during the feeding shaking process. This causes multiple tubes to not always maintain the same horizontal cutting plane, and the distance and position of the tubes relative to the cutting tool will deviate. During the sawing operation, the misaligned steel tubes will produce different cutting strokes, ultimately resulting in inconsistent length dimensions after multiple steel tubes are cut. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a steel pipe cutting machine.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel pipe cutting machine, including a cutting machine tool, on which a cutting tool is mounted and connected. Two electric telescopic rods are fixedly connected to the cutting machine tool. The movable ends of the two electric telescopic rods are provided with four hollow clamps. Each pair of symmetrically arranged hollow clamps forms a group, and the movable ends of the two electric telescopic rods are respectively fixedly connected to two of the hollow clamps. In addition, the two hollow clamps away from the two electric telescopic rods are fixedly connected to the cutting machine tool. Several abutments for clamping and limiting multiple steel pipes are slidably connected to the ends of the hollow clamps in the same group that are close to each other. Each group of hollow clamps is provided with a reciprocating piston structure. The cutting machine tool is equipped with an electric telescopic rod II. A mechanical gripper is fixedly connected to one end of the electric telescopic rod II. The mechanical gripper has four gripping plates distributed on it, which are used to clamp four steel pipes at a time. Each gripping plate is equipped with an automatic leveling structure to ensure that all steel pipes are on the same horizontal line.

[0006] Preferably, a silicone sleeve is fixedly connected to the inner wall of the hollow clamp, and multiple mesh pockets are fixedly connected inside the silicone sleeve. Each mesh pocket has several hard rubber balls that are slidably connected to it. A Y-shaped bend is fixedly connected to a set of symmetrical hollow clamps and silicone sleeves.

[0007] Preferably, the reciprocating piston structure includes a piston cylinder, a support plate is fixedly connected to the bottom outer wall of the piston cylinder, the support plate is fixedly connected to the cutting machine tool, a motor is fixedly connected to the top plate of the support plate, a rocker plate one is fixedly connected to the output shaft of the motor, and a rocker plate two is rotatably connected to the side plate away from the motor of the rocker plate one.

[0008] Preferably, an ear groove plate is rotatably connected to the side plate of the second rocker plate away from the first rocker plate, and a piston rod is fixedly connected to the side plate of the ear groove plate near the piston cylinder. The rod body of the piston rod is slidably connected to one end of the piston cylinder, and the piston rod and the inner wall of the piston cylinder are in close contact and slidably connected. A Y-shaped sleeve is fixedly connected to the piston rod, and a stop plate is fixedly connected to both sides of the top end of the Y-shaped sleeve.

[0009] Preferably, the automatic leveling structure includes a connecting plate fixedly connected to the cutting machine tool. The connecting plate and the end of the electric telescopic rod away from the mechanical gripper are fixedly connected. A T-shaped plate is fixedly connected at the center of the mechanical gripper. Four threshold sensors are installed on the T-shaped plate, each corresponding to one of the four stacked steel pipes.

[0010] Preferably, each of the four gripping plates on the mechanical gripper has a side window at the end facing the threshold sensor. The gripping plates are equipped with meshing plates inside, and each meshing plate is composed of two plates of different materials. Gears are meshed and connected in the inner walls of the upper and lower sides of each meshing plate. The part connecting the meshing plate and the two gears is a metal chain, and the outer material of the meshing plate is rubber. A micro motor is fixedly connected to each gripping plate.

[0011] Preferably, a threaded rod and a smooth column are fixedly connected to each of the two gears. The two ends of the smooth column and the threaded rod are rotatably connected to the inner wall of the corresponding gripper plate of the mechanical gripper. The threaded rod passes through the corresponding gripper plate and is fixedly connected to the output shaft of the micro motor.

[0012] Preferably, an outer ring is provided on the threaded rod near the micro motor, an inner ring is rotatably connected to the outer ring, a semi-arc plate is fixedly connected to the bottom outer wall of the outer ring, and the inner wall of the inner ring is threadedly connected to the threaded rod on the micro motor.

[0013] Preferably, the outer wall of the inner ring is provided with four sliding grooves, and the inner wall of the outer ring is provided with four corresponding slots. A short rod is fixedly connected to the groove wall of each of the four sliding grooves. An arc-angle plate is slidably connected to the rod of each short rod. Each arc-angle plate can intermittently engage with each slot. A spring is fixedly connected between each short rod and each corresponding arc-angle plate.

[0014] Preferably, the two abutments are intermittently slidably connected to a guide plate. A slide rod is fixedly connected to the side of the guide plate near the ear slot plate. Torsion springs are fixedly connected between the outer walls of the two sides of the cutting machine tool and the guide plate. The two ends of the slide rod are rotatably connected to the cutting machine tool. The two ends of the two torsion springs away from the guide plate are fixedly connected to the cutting machine tool.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a symmetrical arrangement of hollow clamps in groups, combined with an electric telescopic rod to achieve clamp opening and closing positioning. Combined with a negative pressure locking structure, it can clamp four steel pipes simultaneously to complete synchronous cutting. The clamping posture is not easy to shift, which meets the needs of batch processing. After the negative pressure is released, it can quickly reset by elasticity, and the silicone sleeve rebounds synchronously. The material release action is smooth and the continuous operation is highly stable. This invention utilizes a threshold pressure sensor to activate a corresponding micro-motor only when the pressure applied to the steel pipe reaches a set value; otherwise, it remains inactive. This precise determination of whether multiple steel pipes are aligned allows the system to work seamlessly with machine tool components such as the spindle and tool post. Four independent drive mechanisms are configured for each of the four steel pipes, enabling individual correction of any misaligned pipes and quickly aligning all pipes to the same horizontal reference plane. This improves upon the shortcomings of traditional equipment that suffers from wobbling and misalignment when stacking metal pipes, ensuring stable cutting conditions, significantly reducing dimensional deviations such as skewed cuts and inconsistent pipe lengths, and ultimately enhancing the precision of metal cutting. This invention achieves adaptive tilting of the guide plate by relying on the sliding rod and torsion spring. After the pipe is cut, when it falls naturally, the guide plate adapts to the change in posture, extends the sliding path of the material, buffers the impact of falling, and prevents the pipe opening from being bumped and the pipe wall from being dented. It is especially suitable for the processing of thin-walled pipes and precision pipe fittings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall front planar structure of the present invention; Figure 3 This is a schematic diagram of the hollow clamp structure of the present invention; Figure 4 This is a schematic diagram of the abutment structure of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the hollow clamp of the present invention; Figure 6 This is a schematic diagram of the motor structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the piston cylinder of the present invention; Figure 8 This is a schematic diagram of the second structure of the electric telescopic pole of the present invention; Figure 9 For the present invention Figure 8 A magnified view of the structure at point A in the middle; Figure 10 This is a schematic diagram of the mechanical gripper structure of the present invention; Figure 11 This is a schematic diagram of the chain plate structure of the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the outer ring and inner ring of the present invention; Figure 13 For the present invention Figure 12 Enlarged structural diagram at point B; Figure 14 This is a schematic diagram of the planar structure of the abutment plate of the present invention.

[0017] In the picture: 1. Cutting machine tools; 101. Cutting tools; 2. Electric telescopic pole one; 201. Hollow clamp; 202. U-shaped sliding plate; 203. Slide rail; 204. Support rod; 205. Silicone sleeve; 206. Net bag; 207. Hard rubber ball; 208. Y-shaped bend; 209. Piston cylinder; 210. Support plate frame; 211. Motor; 212. Rocker plate one; 213. Rocker plate two; 214. Ear groove plate; 216. Piston rod; 217. Y-shaped sleeve rod; 218. Support plate; 219. Electric 220. Connecting plate; 2201. Mechanical gripper; 221. Grip plate; 2211. T-shaped plate; 2212. Threshold sensor; 222. Meshing plate; 223. Micro motor; 224. Threaded rod; 225. Gear; 226. Outer ring; 227. Inner ring; 228. Semi-arc plate; 229. Short rod; 230. Arc-angle clamping plate; 231. Spring; 232. Guide plate; 233. Sliding rod; 234. Torsion spring. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 14 As shown, this invention provides a steel pipe cutting machine, including a cutting machine tool 1. A cutting tool 101 is mounted and connected on the cutting machine tool 1. The cutting tool 101 is a special metal cutting sawing tool, mainly composed of a tool holder, a cutting tool, and a machine tool spindle. The cutting tool is mounted on the machine tool spindle through a central mounting hole and is circumferentially fixed using the positioning structure of the machine tool spindle. The cutting tool 101 is mounted as a whole on the tool holder of the equipment, and the pipe cutting operation is completed by power transmission from the spindle. Two electric telescopic rods 2 are fixedly connected to the cutting machine tool 1. Four hollow clamps 201 are provided at the ends of the movable ends of the two electric telescopic rods 2. Each pair of symmetrically arranged hollow clamps 201 forms a group, and the movable ends of the two electric telescopic rods 2 are respectively fixedly connected to two of the hollow clamps 201. The other two hollow clamps 201, which are far from the two electric telescopic rods 2, are fixedly connected to the cutting machine tool 1. Several clamps for holding and limiting multiple steel pipes are slidably connected to the ends of the hollow clamps 201 in the same group that are close to each other. The abutment rod 204 is fixedly connected to the inner wall of the hollow clamp 201. A silicone sleeve 205 is fixedly connected to the silicone sleeve 205. A number of net bags 206 are fixedly connected inside the silicone sleeve 205. A number of hard rubber balls 207 are slidably connected to each net bag 206. The abutment rod 204 can fit and connect with the surface of the silicone sleeve 205 and abut against the multiple hard rubber balls 207 inside the silicone sleeve 205. The part where the abutment rod 204 and the silicone sleeve 205 contact is T-shaped. A Y-shaped bend 208 is fixedly connected to a set of symmetrical hollow clamps 201 and silicone sleeves 205. Each set of hollow clamps 201 is equipped with a reciprocating piston structure; The cutting machine tool 1 is equipped with an electric telescopic rod 219. A mechanical gripper 2201 is fixedly connected to one end of the electric telescopic rod 219. The mechanical gripper 2201 has four gripping plates 221 distributed on it, which are used to clamp four steel pipes at one time. The mechanical gripper 2201 is an existing mechanism with a separate independent cylinder pneumatic mechanism inside, which can drive the four gripping plates 221 to move independently.

[0020] The reciprocating piston structure includes a piston cylinder 209. A support frame 210 is fixedly connected to the bottom outer wall of the piston cylinder 209. The support frame 210 is fixedly connected to the cutting machine tool 1. A motor 211 is fixedly connected to the top plate of the support frame 210. A rocker plate 212 is fixedly connected to the output shaft of the motor 211. A rocker plate 213 is rotatably connected to the side of the rocker plate 212 away from the motor 211. The side of the rocker plate 213 away from the rocker plate 212... A grooved plate 214 is rotatably connected to the plate. A piston rod 216 is fixedly connected to one side of the plate near the piston cylinder 209. The rod of the piston rod 216 is slidably connected to one end of the piston cylinder 209, and the piston rod 216 and the inner wall of the piston cylinder 209 are in close contact and slidably connected. A Y-shaped sleeve rod 217 is fixedly connected to the rod of the piston rod 216. A stop plate 218 is fixedly connected to both sides of the top end of the Y-shaped sleeve rod 217.

[0021] It should be noted that the reciprocating piston structure with the abutment plate 218 is a set of hollow clamps 201 located on the side near the electric telescopic rod 219, that is... Figure 1 A set of hollow clamps 201 is located closer to the edge of the cutting machine tool 1. Another set of hollow clamps 201 is connected to a reciprocating piston structure via a Y-shaped sleeve 217. This structure is a simple negative pressure suction structure and can be connected to external equipment such as a negative pressure machine. Furthermore, the Y-shaped sleeve 217 is a soft vacuum tube, not a rigid tube, and can bend and follow the movement of the hollow clamps 210.

[0022] The above solution is adopted: such as Figures 1 to 5 As shown, when the cutting machine tool 1 pushes and feeds four stacked steel pipes, the steel pipes are passively moved to the metal cutting area of ​​the cutting tool 101. When the electric telescopic rod 2 is activated, its movable end drives a corresponding fixed hollow clamp 201 to move horizontally. A U-shaped slide plate 202 is fixedly connected to the bottom end of the hollow clamp 201 connected to the electric telescopic rod 2. A slide rail 203 is slidably engaged on the U-shaped slide plate 202. The slide rail 203 is fixedly connected to the cutting machine tool 1. Thus, the passively moving hollow clamp 201 will drive the U-shaped slide plate 202 fixed at the bottom end to move on the slide rail 203. As a result, several abutments 204 that move with the hollow clamp 201 will come into contact with the surface of the stacked steel pipes at multiple points.

[0023] Based on the location of the steel pipe, several abutment rods 204 will slide and retract to varying degrees within a symmetrically arranged set of hollow clamps 201, thus completely fitting and clamping the steel pipe surface. The passively retracted abutment rods 204 will also exert varying degrees of pressure on the silicone sleeve 205, causing the silicone sleeve 205 to deform. The retracted abutment rods 204 will then contact several hard rubber balls 207 layered by each net bag 206 on the synchronously deforming silicone sleeve 205, causing parts of the abutment rods 204 to be embedded in the hard rubber balls 207 through the silicone sleeve 205. Figure 6 As shown.

[0024] Then, the motor 211 on the support frame 210 is started, causing its output shaft to rotate, driving the rocker plate 212 to rotate eccentrically. The rotation angle of the rocker plate 212 is 180 degrees. When the rocker plate 212 is passively eccentrically rotated, it will synchronously drive the rocker plate 213 to rotate and tilt. Thus, the rocker plate 212 and the rocker plate 213 will overlap vertically but not touch each other. The tilting movement of the rocker plate 213 can drive the ear canal plate 214 to translate. The rotational connection between the rocker plate 213, the rocker plate 212, and the ear canal plate 214 is entirely determined by the rotating shafts on both sides of the rocker plate 213, which are respectively rotatably connected to the rocker plate 212 and the ear canal plate 214. Figure 7 As shown, the ear canal plate 214, which is pulled and moved horizontally, will drive the piston rod 216 fixed to it to move horizontally within the piston cylinder 209, thereby generating a negative pressure suction force within the piston cylinder 209.

[0025] The negative pressure suction force then passes through the Y-shaped bend 208 to vacuum the internal space of the silicone sleeve 205, causing it to be recessed and tightly fitted to several hard rubber balls 207. This shapes the hard rubber balls 207 so that they tightly engage with the abutments 204 that have retracted to different degrees. As a rigid fulcrum, the internal hard rubber balls 207 will not be flattened, forcing the silicone sleeve 205 to wrap around the outer contour of the abutments 204, thus firmly positioning the abutments 204 for automatic adaptation and clamping of the workpiece. This achieves uniform force distribution on the surface of the steel pipe, preventing the workpiece from slipping, becoming eccentric, or deforming under localized pressure.

[0026] At this point, the multiple steel pipes that are firmly fixed can then be started by the cutting tool 101 installed on the metal cutting machine tool 1. The cutting tool rotates through the spindle and moves down to cut the multiple steel pipes at once. Subsequently, the motor 211 resets and rotates in the opposite direction. The silicone sleeve 205 rebounds due to the elasticity of the material itself and returns to its initial shape. A set of hollow clamps 201 close to the electric telescopic rod 2 will be controlled by the program to retract the electric telescopic rod 2 and separate from the steel pipes. The cut and separated metal steel pipes will no longer be clamped and limited, and the steel pipe workpieces can be freely removed.

[0027] Each grab plate 221 is equipped with an automatic leveling structure to ensure that all steel pipes are on the same horizontal line; The automatic leveling structure includes a connecting plate 220 fixedly connected to the cutting machine tool 1. The connecting plate 220 and the end of the electric telescopic rod 219 away from the mechanical gripper 2201 are fixedly connected. A T-shaped plate 2211 is fixedly connected to the center of the mechanical gripper 2201. Four threshold sensors 2212 are installed on the T-shaped plate 2211, corresponding to four stacked steel pipes. The four gripping plates 221 on the mechanical gripper 2201 have side windows at the ends facing the threshold sensors 2212. The gripping plates 211 are equipped with meshing plates 222. Each meshing plate 222 is composed of a belt and rubber protrusions, and the inner side of the belt is close to the upper and lower edges. Each of the two gripping plates 222 is fixedly connected to a chain, and gears 225 are meshed on the chains on both sides of the belt of each meshing plate 222. The outer material of the meshing plate 222 is rubber, which can maximize the friction coefficient between it and the inner wall of the steel pipe. Each gripping plate 221 is fixedly connected to a micro motor 223. Threaded rods 224 and smooth columns are fixedly connected to the two gears 225 respectively. The two ends of the smooth column and the threaded rod 224 are rotatably connected to the inner wall of the corresponding gripping plate 221 of the mechanical gripper 2201. The rod of the threaded rod 224 passes through the corresponding gripping plate 221 and is fixedly connected to the output shaft of the micro motor 223.

[0028] The above solution is adopted: such as Figures 8 to 13 As shown, multiple stacked steel pipes are uniformly conveyed by the cutting machine tool 1 (the conveyed steel pipes need to be manually supported and limited briefly). Before the steel pipes are clamped, limited, and cut, one end of the conveyed steel pipes will abut against the T-shaped plate 2211 at the center of the mechanical gripper 2201, thereby generating contact with the four threshold sensors 2212 installed in the T-shaped plate 2211. The structure used in this embodiment is as follows: Figure 1 As shown, four steel pipes are conveyed simultaneously, and the four steel pipes correspond to four gripping plates 211. When the four gripping plates 211 gradually move towards the center of symmetry of the four gripping plates 211 under the drive of the mechanical gripper 2201, the four steel pipes will gradually become a diamond-shaped stacking structure similar to the four gripping plates 211. The four steel pipes are fixed to each other by friction under the action of the gripping plates 211.

[0029] If a single or multiple steel pipes deviate during the conveying process, causing all the steel pipes to be out of sync, then some steel pipes will not come into strong contact with their corresponding threshold sensor 2212. Only when all the steel pipes are in contact with their corresponding threshold sensor 2212 and the pressure generated reaches the set value will multiple threshold sensors 2212 output a signal together and trigger the micro motor 223 on the corresponding gripper 221. At the same time, the corresponding gripper 221 will move individually under the control of the internal mechanism of the mechanical gripper 2201, so that it fits against the inner wall of the corresponding steel pipe.

[0030] When the pressure of one of the threshold sensors 2212 fails to meet the standard, the micro motor 223 of the corresponding gripper plate 211 starts running. The running micro motor 223 can indirectly level the uneven steel pipe. The running micro motor 223 will cause the threaded rod 224 fixed to it to rotate. The rotating threaded rod 224 will synchronously drive the gear 225 fixed to it to rotate, thereby driving the meshing plate 222 to rotate. The rotating meshing plate 222 transmits the rotation of another gear 225. The passive meshing plate 222 will make frictional contact with the inner wall of the steel pipe, causing the steel pipe to move in the direction of the threshold sensor 2212, so that it is aligned with the horizontal position of other steel pipes.

[0031] An outer ring 226 is provided on the threaded rod 224 near the micro motor 223. An inner ring 227 is rotatably connected to the outer ring 226. A semi-arc plate 228 is fixedly connected to the outer wall of the bottom end of the outer ring 226. The inner wall of the inner ring 227 is threadedly connected to the threaded rod 224 on the micro motor 223. The side of the semi-arc plate 228 away from the outer ring 226 is slidably connected to a smooth column through a rod body, which limits the semi-arc plate 228 to slide only vertically. The outer wall of the collar 227 is provided with four sliding grooves, and the inner wall of the outer collar 226 is provided with four corresponding slots. Short rods 229 are fixedly connected to the groove walls of the four sliding grooves. An arc-angle plate 230 is slidably connected to the rod of each short rod 229. Each arc-angle plate 230 can intermittently engage with each slot. A spring 231 is fixedly connected between each short rod 229 and each corresponding arc-angle plate 230.

[0032] A guide plate 232 is located below the electric telescopic rod 219. Two abutments 218 can intermittently abut against the guide plate 232. Two rollers are rotatably connected to one of the abutments 218 near the cutting machine tool 1. The machine plate of the cutting machine tool 1 has a pulley groove that is in contact with and rotatably connected to the two rollers, which is used to support and guide the passive translation of the two abutments 218. A slide rod 233 is fixedly connected to the side of the guide plate 232 near the ear groove plate 214. Torsion springs 234 are fixedly connected between the outer walls of the two sides of the cutting machine tool 1 and the guide plate 232. The two ends of the slide rod 233 are rotatably connected to the cutting machine tool 1. The two ends of the two torsion springs 234 away from the guide plate 232 are fixedly connected to the cutting machine tool 1. When the abutment plate 218 moves toward the guide plate 232, the guide plate 232 is lifted by the abutment plate 218 and is in a relatively flat position to receive the cut steel pipe. When the abutment plate 218 returns to the position close to the hollow clamp 201 (that is, the silicone sleeve 205 is no longer vacuumed and the abutment rod 204 releases the restriction on the steel pipe), the guide plate 232 is in an inclined state to guide the cut steel pipe into the storage place of the steel pipe.

[0033] The above scheme is adopted: under the drive of the micro motor 223, the inner ring 227, which is threadedly connected to the threaded rod 224, will also move. The passive movement of the inner ring 227 will inevitably drive the outer ring 226 to move synchronously. The two will produce a motion effect of the inner (inner ring 227) rotating and the outer (outer ring 226) not rotating. Thus, the passively moving outer ring 226 will synchronously drive the semi-arc plate 228 to move vertically. As the semi-arc plate 228 moves vertically and abuts against the meshing plate 222, the belt of the meshing plate 222 will undergo slight tension deformation, causing an arc-shaped protrusion in the local central area of ​​the belt. The meshing plate 222 protrudes outward from the side window of the grab plate 221, so that the rubber plate of the outer part of the meshing plate 222 can generate a stronger pressure against the inner wall of the steel pipe. This avoids the situation where the friction coefficient is insufficient or unstable when the meshing plate 222 and the corresponding steel pipe are in partial contact, which would cause slippage when the corresponding steel pipe cannot be moved and leveled. This increases the friction coefficient and effectively drives the steel pipe to move.

[0034] When the outer ring 226 contacts the gear 225, the inner ring 227, which is continuously driven by the rotation of the threaded rod 224, will simultaneously drive the short rods 229 fixed in its multiple grooves to rotate. Each rotating short rod 229 will simultaneously drive the corresponding arc-angle clamping plate 230 to disengage from the groove in the outer ring 226 in turn. The multiple arc-angle clamping plates 230, which are compressed by rotation, will squeeze the spring 231 fixed between each short rod 229, thereby deforming the spring 231 and allowing the arc-angle clamping plate 230 to smoothly enter the inner wall of the groove. The presence of the spring 231 facilitates the automatic reset of the arc-angle clamping plate 230 and re-engages it with the groove in the outer ring 226. Subsequently, when the threaded rod 224 is passively rotated in the opposite direction, the inner ring 227 and the outer ring 226 can be normally driven to reset and move (thus realizing the passive reverse rotation of the threaded rod 224, causing the semi-arc plate 228 to passively move upward and reset).

[0035] After cutting is completed, a group of abutments 204 away from the electric telescopic rod 219 continue to clamp and limit the surface of the steel pipe, while the electric telescopic rod 2 closer to the electric telescopic rod 219 will cause the corresponding set of hollow clamps 201 to separate from the steel pipe, no longer clamping and limiting the cut metal pipe. At this time, without the abutments 218 pressing and limiting, the torsion spring 234 will reset and cause the guide plate 232 to gradually rotate into an inclined position. And because the rotating connection between the guide plate 232 and the cutting machine tool 1 has been ground... The sanding process increases frictional resistance, allowing the guide plate 232 to slowly rotate into an inclined position when the torsion spring 234 resets. This assists the steel pipes that are not clamped or limited by the mechanical gripper 2201, resulting in a natural inclined discharge. The cut steel pipes will come into close contact with the guide plate 232, which is passively reset and tilted, and synchronously follow the tilt of the guide plate 232 to guide the material. This can guide and buffer the falling pipes, reduce the impact of falling, and prevent the pipe openings from colliding and the pipe walls from deforming.

[0036] The passive adaptive deceleration and buffering based on the steel pipe's own weight and falling state, and the flexible buffering of the guide plate 232 with follow-up structure, are core advantages that existing fixed plates cannot replace. When the motor 211 rotates in the forward direction, the piston rod 216, which indirectly drives the translation, will also drive the Y-shaped sleeve rod 217 and the two abutment plates 218 fixed on the Y-shaped sleeve rod 217 to translate. Thus, the abutment plates 218 can translate and abut against the guide plate 232 in the tilted state during the passive translation process, causing the guide plate 232, which was originally tilted, to passively tilt and rotate at a fixed point on the cutting machine tool 1 with the slide rod 233 as the axis, changing to a posture for receiving steel pipes. During the tilting and rotating process, the guide plate 232 will simultaneously twist and deform the torsion spring 234 fixed together with the cutting machine tool 1, so that it can return to the tilted state when there is no abutment plate 218 to abut against it.

[0037] It is worth noting that the cutting machine tool 1, the cutting tool 101, and the electric telescopic rod 219 are all numerically controlled by the PLC terminal program, which is existing technology. The electric telescopic rod 219 can control the extension length of the mechanical gripper 2201, thereby shortening or extending the distance between it and the cutting tool 101. This makes the distance between the four threshold sensors 2212 and the cutting tool 101 controllable. The distance between the four threshold sensors 2212 and the cutting tool 101 is the distance for cutting the steel pipe.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel pipe cutting machine comprising a cutting machine tool (1), characterized in that: The cutting machine tool (1) is equipped with a cutting tool (101). Two electric telescopic rods (2) are fixedly connected to the cutting machine tool (1). Four hollow clamps (201) are provided at the ends of the movable ends of the two electric telescopic rods (2). Each pair of hollow clamps (201) is a group. The movable ends of the two electric telescopic rods (2) are fixedly connected to two of the hollow clamps (201). The two hollow clamps (201) that are far away from the two electric telescopic rods (2) are fixedly connected to the cutting machine tool (1). Several abutments (204) for clamping and limiting multiple steel pipes are slidably connected to the ends of the hollow clamps (201) in the same group that are close to each other. Each group of hollow clamps (201) is provided with a reciprocating piston structure. The cutting machine tool (1) is equipped with an electric telescopic rod two (219). A mechanical gripper (2201) is fixedly connected to one end of the electric telescopic rod two (219). The mechanical gripper (2201) has four gripping plates (221) distributed on it, which are used to clamp four steel pipes at one time. Each gripping plate (221) is equipped with an automatic leveling structure so that all steel pipes are on the same horizontal line.

2. The pipe cutting machine of claim 1, wherein: A silicone sleeve (205) is fixedly connected to the inner wall of the hollow clamp (201), and a plurality of net pockets (206) are fixedly connected inside the silicone sleeve (205). Several hard rubber balls (207) are slidably connected to each net pocket (206); a Y-shaped bend (208) is fixedly connected to a set of symmetrical hollow clamps (201) and silicone sleeves (205).

3. The pipe cutting machine of claim 2, wherein: The reciprocating piston structure includes a piston cylinder (209), a support frame (210) is fixedly connected to the bottom outer wall of the piston cylinder (209), the support frame (210) is fixedly connected to the cutting machine tool (1), a motor (211) is fixedly connected to the top plate of the support frame (210), a rocker plate one (212) is fixedly connected to the output shaft of the motor (211), and a rocker plate two (213) is rotatably connected to the side plate of the rocker plate one (212) away from the motor (211).

4. The pipe cutting machine of claim 3, wherein: On the side of the rocker plate two (213) away from the rocker plate one (212), an ear groove plate (214) is rotatably connected. On the side of the ear groove plate (214) near the piston cylinder (209), a piston rod (216) is fixedly connected. The rod of the piston rod (216) is slidably connected to one end of the piston cylinder (209), and the piston rod (216) and the inner wall of the piston cylinder (209) are in contact and slidably connected. A Y-shaped sleeve (217) is fixedly connected to the piston rod (216), and a stop plate (218) is fixedly connected to both sides of the top end of the Y-shaped sleeve (217).

5. The pipe cutting machine of claim 1, wherein: The automatic leveling structure includes a connecting plate (220) fixedly connected to the cutting machine tool (1). The connecting plate (220) and the electric telescopic rod (219) are fixedly connected to one end away from the mechanical gripper (2201). A T-shaped plate (2211) is fixedly connected to the center of the mechanical gripper (2201). Four threshold sensors (2212) are installed on the T-shaped plate (2211), corresponding to four stacked steel pipes respectively.

6. The steel pipe cutting machine according to claim 5, characterized in that: The mechanical gripper (2201) has four gripping plates (221) with side windows at the end facing the threshold sensor (2212). The gripping plates (221) are equipped with meshing plates (222). Each meshing plate (222) is composed of two plates of different materials. Gears (225) are meshed and connected in the inner walls of the upper and lower sides of each meshing plate (222). The part connecting the meshing plate (222) and the two gears (225) is a metal chain. The outer material of the meshing plate (222) is rubber. Each gripping plate (221) is fixedly connected with a micro motor (223).

7. The pipe cutting machine of claim 6, wherein: A threaded rod (224) and a smooth column are fixedly connected to the two gears (225), respectively. The two ends of the smooth column and the threaded rod (224) are rotatably connected to the inner wall of the corresponding gripper plate (221) of the mechanical gripper (2201). The rod of the threaded rod (224) passes through the corresponding gripper plate (221) and is fixedly connected to the output shaft of the micro motor (223).

8. The pipe cutting machine of claim 7, wherein: An outer ring (226) is provided on the threaded rod (224) near the micro motor (223). An inner ring (227) is rotatably connected inside the outer ring (226). A semi-arc plate (228) is fixedly connected to the outer wall of the bottom end of the outer ring (226). The inner wall of the inner ring (227) is threadedly connected to the threaded rod (224) on the micro motor (223).

9. The pipe cutting machine of claim 8, wherein: The inner ring (227) has four grooves circumferentially formed on its outer wall, and the outer ring (226) has four corresponding slots circumferentially formed on its inner wall. Each of the four grooves has a short rod (229) fixedly connected to its groove wall. Each short rod (229) has an arc-angle plate (230) slidably connected to its rod body. Each arc-angle plate (230) can intermittently engage with each slot. A spring (231) is fixedly connected between each short rod (229) and each corresponding arc-angle plate (230).

10. The pipe cutting machine of claim 4, wherein: The two abutments (218) can be intermittently slidably connected to a guide plate (232). A slide rod (233) is fixedly connected to the side of the guide plate (232) near the ear groove plate (214). Torsion springs (234) are fixedly connected between the outer walls of the two sides of the cutting machine tool (1) and the guide plate (232). The two ends of the slide rod (233) are rotatably connected to the cutting machine tool (1). The two ends of the two torsion springs (234) away from the guide plate (232) are fixedly connected to the cutting machine tool (1).

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