Pipeline cutting equipment and working method thereof

Abstract

The invention relates to the technical field of pipeline machining, and discloses pipeline cutting equipment and a working method thereof.The pipeline cutting equipment comprises a machining table, a high-pressure water flow cutting mechanism, a synchronous conveying mechanism and a centering clamping mechanism; the high-pressure water flow cutting mechanism is arranged on the right side of the top of the machining table, the synchronous conveying mechanism is arranged at the left end of the top of the machining table, and the centering clamping mechanism is arranged between the high-pressure water flow cutting mechanism and the synchronous conveying mechanism. According to the pipeline cutting equipment, the high-pressure water flow cutting mechanism is arranged, a spray head and a friction wheel can be driven to move downwards when a top plate moves downwards, when the friction wheel moves to make contact with the surface of a pipeline, the top plate stops moving at the moment, and the pipeline starts to rotate under the action of friction force; the mixed fluid sprayed by the spray head can cut the pipeline when the pipeline rotates, so that the defects of burrs and the like at a notch can be effectively reduced, and the cutting quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline processing, and in particular to a pipeline cutting device and a working method thereof. Background Art

[0002] Water conservancy engineering mainly studies the basic knowledge and skills in engineering hydrology, water conservancy engineering surveying, water conservancy reinforced concrete, hydraulic structures, engineering drawings, etc., and carries out engineering planning and design, engineering site construction, engineering budgeting, and water conservancy equipment maintenance and repair in the field of water conservancy engineering. Water conservancy engineering is often inseparable from water treatment. In the process of water treatment, pipes are usually required to guide the water, and different sizes and lengths of pipes are required in different situations. For this reason, cutting equipment is required to pre-cut the pipes and install them on the construction site. Pipe cutting is an important part of pipeline installation and prefabrication production, and its methods are diverse. Choosing the appropriate cutting method is crucial to ensuring the quality of the pipeline and the smooth progress of subsequent work.

[0003] The existing pipe cutting equipment is difficult to ensure the stability of the pipe during cutting, so that defects such as burrs are easily generated at the cut, and secondary processing is often required, which affects the cutting quality. Therefore, a pipe cutting equipment and a working method thereof are proposed. Summary of the invention

[0004] The present invention aims to solve the technical problem that the existing pipe cutting equipment is difficult to ensure the stability of the pipe during cutting, which makes it easy for defects such as burrs to appear at the incision, often requiring secondary processing, affecting the cutting quality. A pipe cutting device and a working method thereof are provided.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A first aspect of the present invention is to provide a pipe cutting device, comprising a processing table, a high-pressure water flow cutting mechanism, a synchronous feeding mechanism and a centering clamping mechanism; The high-pressure water jet cutting mechanism is arranged on the top right side of the processing table, the synchronous feeding mechanism is arranged on the top left end of the processing table, the centering clamping mechanism is arranged between the high-pressure water jet cutting mechanism and the synchronous feeding mechanism, a pipeline is arranged through the high-pressure water jet cutting mechanism, the centering clamping mechanism and the synchronous feeding mechanism, the pipeline is arranged parallel to the processing table, a baffle is arranged on the right side of the high-pressure water jet cutting mechanism, the baffle is arranged vertically to the processing table, the bottom of the baffle is fixedly connected with a slide table, the slide table is slidably connected to the processing table, a connecting plate is fixedly arranged on the right side of the slide table, the top of the connecting plate is threadedly connected with a fastening bolt, a plurality of adjustment holes are evenly opened on the right end surface of the processing table, the bottom end of the fastening bolt passes through the connecting plate and is threadedly connected to the adjustment hole, and a plurality of brackets are fixedly arranged at the bottom of the processing table. Before cutting, slide the baffle on the right side of the top of the processing table to make the slide and connecting plate at the bottom move accordingly. When the horizontal distance between the baffle and the high-pressure water jet cutting mechanism is consistent with the required length of the pipe cutting, fix the connecting plate by tightening the bolts to fix the baffle, and pass the pipe through the synchronous feeding mechanism and the centering clamping mechanism so that the pipe is located below the high-pressure water jet cutting mechanism.

[0006] Furthermore, the high-pressure water jet cutting mechanism includes a fixed plate, the fixed plate is arranged on the rear side of the pipe, the fixed plate is arranged vertically to the processing table and the baffle, a sliding plate is slidably arranged on the top of the rear side wall of the fixed plate, an electric lifting rod is arranged on the rear side of the fixed plate, the electric lifting rod is arranged vertically to the processing table, a connecting rod is fixedly connected between the top movable end of the electric lifting rod and the rear side wall of the sliding plate, the top of the sliding plate is vertically connected to the top plate, the left side wall of the sliding plate is fixedly connected to a cross bar, and the cross bar is arranged parallel to the pipe. When cutting, the electric lifting rod is driven to shorten, and when the top movable end of the electric lifting rod moves downward, the sliding plate is driven downward by the connecting rod, so that the cross bar moves downward, and when the sliding plate moves downward, the top plate is driven downward.

[0007] Furthermore, a mixing bin is fixedly provided on the top right side of the top plate, a mixing motor is fixedly provided on the top of the mixing bin, a rotating shaft is connected to the bottom output end of the mixing motor, a liquid inlet pipe and an abrasive feed pipe are respectively connected to the top of the side wall of the mixing bin through pipelines, a plurality of stirring rods are fixedly provided on the side wall of the rotating shaft, a conical surface is provided on the inner bottom of the mixing bin, the bottom end of the rotating shaft is rotatably connected to the conical surface through a connecting frame, a discharge port is provided at the bottom end of the conical surface, a high-pressure liquid pump is fixedly provided on the bottom right side of the top plate, the high-pressure liquid pump is located directly below the mixing bin, the discharge port is connected to the input end pipeline of the high-pressure liquid pump, the bottom output end pipeline of the high-pressure liquid pump is connected to a nozzle, and the nozzle is located directly above the pipeline. During cutting, water and abrasive are injected into the mixing bin through the liquid inlet pipe and the abrasive feed pipe, and then the mixing motor is started to make the shaft start to rotate. When the shaft rotates, the stirring rod is driven to rotate to fully mix the abrasive and water in the mixing bin. The mixed fluid flows into the high-pressure liquid pump along the discharge port, is pressurized by the high-pressure liquid pump, and is ejected at high speed along the nozzle.

[0008] Furthermore, a driving wheel is provided on the outer side of the top end of the rotating shaft, a vertical axis is vertically provided on the left side of the top plate, a driven wheel is fixedly provided on the top end of the vertical axis, the driving wheel and the driven wheel are located at the same height, a transmission belt is meshed between the driving wheel and the driven wheel, a driving bevel gear is fixedly provided on the bottom end of the vertical axis, a mounting block is fixedly provided on the left side of the front side wall of the sliding plate, a horizontal axis is rotatably connected inside the mounting block, the horizontal axis is parallel to the pipeline, the right end of the horizontal axis is connected to the driven bevel gear, the driving bevel gear is meshed and connected with the driven bevel gear, and the left end of the horizontal axis is connected to the friction wheel. When the rotating shaft rotates, it drives the driving wheel to start rotating. When the driving wheel rotates, it drives the vertical shaft to start rotating through the transmission belt meshing with it. When the vertical shaft rotates, it drives the driving bevel gear at the bottom to start rotating. When the driving bevel gear rotates, it drives the horizontal shaft to rotate accordingly, so that the friction wheel starts to rotate. When the top plate moves downward, it drives the nozzle and the friction wheel to move downward accordingly. When the friction wheel moves to contact the surface of the pipeline, the top plate stops moving, and the pipeline starts to rotate under the action of friction. The rollers arranged on the side walls of the pipeline through the arc clamp and the friction roller can reduce the friction force of the pipeline during rotation. The mixed fluid sprayed by the nozzle can cut the pipeline when it rotates, thereby effectively reducing defects such as burrs at the incision and improving the cutting quality.

[0009] Furthermore, the synchronous feeding mechanism includes a shell, the shell is in a rectangular parallelepiped configuration, a feeding motor is disposed on the inner top of the shell, the feeding motor is slidably connected to the rear inner wall of the shell, a first connecting rod is fixedly disposed on the top of the feeding motor, the top end of the first connecting rod passes through the top of the shell and is fixedly connected to the cross bar, and the first connecting rod is disposed vertically to the cross bar. When the cross bar moves downward, it drives the first connecting rod to move downward, at which time the feeding motor is started, and when the feeding motor is running, it drives the sliding shaft and the friction roller to start rotating in the direction of the baffle.

[0010] Furthermore, the output end of the feed motor is connected to a sliding shaft, the other end of the sliding shaft is connected to a slider, the slider is slidably connected to the front inner wall of the shell, a friction roller is fixedly arranged in the middle of the sliding shaft, a fixed shaft is arranged at the bottom of the shell, the two ends of the fixed shaft are respectively rotatably connected to the front and rear inner walls of the shell, and a driven roller is arranged in the middle of the fixed shaft. When the first connecting rod moves downward, it drives the feed motor to move downward, and at this time, the sliding shaft moves downward accordingly, and when the sliding shaft moves downward, it drives the friction roller to move downward.

[0011] Furthermore, the driven roller is located directly below the friction roller, the sliding shaft is arranged parallel to the fixed shaft, the sliding shaft is arranged perpendicular to the pipe, the side walls of the driven roller and the friction roller are both provided with arc grooves, and the pipe is located between the driven roller and the friction roller. When the friction roller moves downward to contact the surface of the pipe, the pipe moves toward the baffle under the action of friction until the right end of the pipe contacts the left side wall of the baffle and stops, thereby realizing automatic synchronous conveying of the pipe during cutting.

[0012] Furthermore, the centering clamping mechanism includes a shell, a gear plate is rotatably arranged inside the shell, an inner hole is opened in the center of the gear plate, the gear plate is coaxially arranged with the pipe, a rack is arranged between the gear plate and the rear inner wall of the shell, the rack is meshed with the gear plate, the top end of the rack passes through the top of the shell and is vertically connected to the cross bar. When the cross bar moves downward, it drives the rack to move downward, so that the gear plate meshed with it starts to rotate.

[0013] Furthermore, the surface of the gear plate is evenly provided with a plurality of arc grooves, a sliding rod is slidably provided inside the arc groove, the inner end of the sliding rod is vertically connected with a movable rod, the movable rod faces the axis of the pipeline, the other end of the movable rod is fixedly connected with an arc clamping block, the arc clamping block and the friction roller are both provided with a plurality of rollers on the side wall facing the pipeline, and the rotation direction of the rollers is consistent with the rotation direction of the friction wheel. When the gear plate rotates, the sliding rod is driven to slide toward the inner end of the arc groove, so that the movable rod connected to the inner side of the sliding rod moves toward the direction of the pipeline, and when the movable rod moves, the arc clamping block is driven to move accordingly, until the inner wall of the arc clamping block abuts against the surface of the pipeline, thereby realizing the centering clamping of the pipeline and ensuring the stability of the pipeline during cutting.

[0014] A second aspect of the present invention is to provide a working method of a pipe cutting device, the steps comprising: S1. Slide the baffle on the right side of the top of the processing table to make the slide and the connecting plate at the bottom move accordingly. When the horizontal distance between the baffle and the high-pressure water jet cutting mechanism is consistent with the required pipe cutting length, fix the connecting plate by tightening the bolts to fix the baffle; S2, passing the pipeline through the synchronous feeding mechanism and the centering clamping mechanism, so that the pipeline is located below the high-pressure water jet cutting mechanism; S3, when cutting, the electric lifting rod is driven to shorten, and when the top movable end of the electric lifting rod moves downward, the sliding plate is driven downward through the connecting rod, so that the cross bar moves downward, and when the cross bar moves downward, the first connecting rod is driven downward, and the feeding motor is started at this time. When the feeding motor is running, the sliding shaft and the friction roller start to rotate in the direction of the baffle plate, and when the first connecting rod moves downward, the feeding motor moves downward, and at this time, the sliding shaft moves downward accordingly, and when the sliding shaft moves downward, the friction roller is driven downward; S4. When the friction roller moves downward to contact the surface of the pipe, the pipe moves toward the baffle under the action of friction until the right end of the pipe contacts the left wall of the baffle and stops, thereby realizing automatic synchronous conveying of the pipe during cutting; S5. When the crossbar moves downward, it drives the rack to move downward, so that the gear plate meshing with it starts to rotate. When the gear plate rotates, it drives the slide bar to slide toward the inner end of the arc groove, so that the movable rod connected to the inner side of the slide bar moves toward the direction of the pipeline. When the movable rod moves, it drives the arc clamping block to move with it until the inner wall of the arc clamping block abuts against the surface of the pipeline, thereby achieving centering clamping of the pipeline and ensuring the stability of the pipeline during cutting; S6, when the sliding plate moves downward, it drives the top plate to move downward, and at this time, water and abrasive are injected into the mixing bin through the liquid inlet pipe and the abrasive feed pipe, and then the mixing motor is started to make the rotating shaft start to rotate, and when the rotating shaft rotates, it drives the stirring rod to start to rotate, so that the abrasive and water in the mixing bin are fully mixed, and the mixed fluid flows into the high-pressure liquid pump along the discharge port, is pressurized by the high-pressure liquid pump, and then is ejected at high speed along the nozzle; S7, when the rotating shaft rotates, the driving wheel starts to rotate. When the driving wheel rotates, the vertical shaft starts to rotate through the transmission belt meshing with it. When the vertical shaft rotates, the driving bevel gear at the bottom starts to rotate. When the driving bevel gear rotates, the horizontal shaft also starts to rotate, so that the friction wheel starts to rotate; S8. When the top plate moves downward, it drives the nozzle and the friction wheel to move downward. When the friction wheel moves to contact the surface of the pipe, the top plate stops moving and the pipe starts to rotate under the action of friction. The rollers arranged on the side walls of the pipe through the arc-shaped clamping block and the friction roller can reduce the friction force on the pipe when it rotates. The mixed fluid sprayed by the nozzle can cut the pipe when it rotates, thereby effectively reducing defects such as burrs at the incision and improving the cutting quality.

[0015] Beneficial effects of the present invention: 1. The pipe cutting device of the present invention is provided with a high-pressure water flow cutting mechanism, which can drive the nozzle and the friction wheel to move downward when the top plate moves downward. When the friction wheel moves to contact the surface of the pipe, the top plate stops moving, and the pipe starts to rotate under the action of friction. The rollers arranged toward the side walls of the pipe through the arc-shaped clamping block and the friction roller can reduce the friction force on the pipe when it rotates. The mixed fluid sprayed by the nozzle can cut the pipe when it rotates, thereby effectively reducing defects such as burrs at the incision and improving the cutting quality.

[0016] 2. The pipe cutting equipment of the present invention is provided with a synchronous feeding mechanism, which can drive the first connecting rod to move downward when the cross bar moves downward, so that the feeding motor moves downward, and the sliding shaft moves downward accordingly. When the sliding shaft moves downward, it drives the friction roller to move downward. When the friction roller moves downward and contacts the surface of the pipe, the pipe moves toward the baffle under the action of friction until the right end of the pipe contacts the left side wall of the baffle and stops, thereby realizing automatic synchronous feeding of the pipe during cutting.

[0017] 3. The pipe cutting equipment of the present invention is provided with a centering clamping mechanism, which can drive the rack to move downward when the cross bar moves downward, so that the gear plate meshing with it starts to rotate, and when the gear plate rotates, it drives the slide bar to slide toward the inner end of the arc groove, so that the movable rod connected to the inner side of the slide bar moves toward the direction of the pipe. When the movable rod moves, it drives the arc clamping block to move accordingly until the inner wall of the arc clamping block abuts against the surface of the pipe, thereby realizing the centering clamping of the pipe and ensuring the stability of the pipe during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structural schematic diagram of the pipe cutting equipment; Figure 2 This is an enlarged schematic diagram of the structure at point A of the pipe cutting equipment; Figure 3 It is a schematic diagram of the connection structure of the sliding plate and the fixed plate of the pipeline cutting equipment; Figure 4 This is a schematic diagram of the internal structure of the mixing bin of the pipe cutting equipment; Figure 5 It is a schematic diagram of the centering and clamping mechanism of the pipe cutting equipment; Figure 6 It is a schematic diagram of the synchronous feeding mechanism of the pipeline cutting equipment.

[0019] Explanation of the reference numerals: 1. workbench; 2. synchronous feeding mechanism; 3. pipeline; 4. bracket; 5. centering clamping mechanism; 6. fixing plate; 7. baffle; 8. slide; 9. connecting plate; 10. fastening bolt; 11. adjustment hole; 12. cross bar; 13. sliding plate; 14. top plate; 15. mixing bin; 16. mixing motor; 17. high-pressure liquid pump; 18. nozzle; 19. driving wheel; 20. vertical axis; 21. driven wheel; 22. transmission belt; 23. driving bevel gear; 24. driven bevel gear; 25. horizontal axis; 26. friction wheel ; 27. Mounting block; 28. Electric lifting rod; 29. ​​Connecting rod; 30. Rotating shaft; 31. Liquid inlet pipe; 32. Abrasive feeding pipe; 33. Stirring rod; 34. Connecting frame; 35. Discharge port; 36. Conical surface; 37. Shell; 38. Rack; 39. Gear plate; 40. Arc groove; 41. Sliding rod; 42. Movable rod; 43. Inner hole; 44. Arc clamping block; 45. Roller; 46. Shell; 47. First connecting rod; 48. Feeding motor; 49. Sliding shaft; 50. Friction roller; 51. Driven roller; 52. Fixed shaft. DETAILED DESCRIPTION

[0020] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0021] A pipe 3 cutting device, comprising a processing table, a high-pressure water flow cutting mechanism, a synchronous feeding mechanism 2 and a centering clamping mechanism 5; The high-pressure water jet cutting mechanism is arranged on the top right side of the processing table, the synchronous feeding mechanism 2 is arranged on the top left end of the processing table, the centering clamping mechanism 5 is arranged between the high-pressure water jet cutting mechanism and the synchronous feeding mechanism 2, a pipeline 3 is arranged through the high-pressure water jet cutting mechanism, the centering clamping mechanism 5 and the synchronous feeding mechanism 2, the pipeline 3 is arranged parallel to the processing table, a baffle 7 is arranged on the right side of the high-pressure water jet cutting mechanism, the baffle 7 is arranged vertically to the processing table, a slide 8 is fixedly connected to the bottom of the baffle 7, the slide 8 is slidably connected to the processing table, a connecting plate 9 is fixedly arranged on the right side of the slide 8, the top of the connecting plate 9 is threadedly connected with a fastening bolt 10, a plurality of adjustment holes 11 are evenly opened on the right end surface of the processing table, the bottom end of the fastening bolt 10 passes through the connecting plate 9 and is threadedly connected to the adjustment hole 11, and a plurality of brackets 4 are fixedly arranged at the bottom of the processing table. Before cutting, slide the baffle 7 on the top right side of the processing table so that the slide 8 and the connecting plate 9 at the bottom thereof move accordingly. When the horizontal distance between the baffle 7 and the high-pressure water jet cutting mechanism is consistent with the required cutting length of the pipe 3, fix the connecting plate 9 by tightening the bolts 10, thereby fixing the baffle 7, and pass the pipe 3 through the synchronous feeding mechanism 2 and the centering clamping mechanism 5, so that the pipe 3 is located below the high-pressure water jet cutting mechanism.

[0022] The high-pressure water jet cutting mechanism includes a fixed plate 6, which is arranged at the rear side of the pipe 3, and is arranged vertically with the processing table and the baffle 7. A sliding plate 13 is slidably arranged at the top of the rear side wall of the fixed plate 6. An electric lifting rod 28 is arranged at the rear side of the fixed plate 6, and the electric lifting rod 28 is arranged vertically with the processing table. A connecting rod 29 is fixedly connected between the top movable end of the electric lifting rod 28 and the rear side wall of the sliding plate 13. The top of the sliding plate 13 is vertically connected with the top plate 14, and the left side wall of the sliding plate 13 is fixedly connected with a cross bar 12, and the cross bar 12 is arranged parallel to the pipe 3. When cutting, the electric lifting rod 28 is driven to shorten, and when the top movable end of the electric lifting rod 28 moves downward, the sliding plate 13 is driven to move downward through the connecting rod 29, so that the cross bar 12 moves downward, and when the sliding plate 13 moves downward, the top plate 14 is driven to move downward.

[0023] A mixing bin 15 is fixedly provided on the top right side of the top plate 14, a mixing motor 16 is fixedly provided on the top of the mixing bin 15, a rotating shaft 30 is connected to the bottom output end of the mixing motor 16, a liquid inlet pipe 31 and an abrasive feed pipe 32 are respectively connected to the top of the side wall of the mixing bin 15 by pipelines, a plurality of stirring rods 33 are fixedly provided on the side wall of the rotating shaft 30, a conical surface 36 is provided at the inner bottom of the mixing bin 15, the bottom end of the rotating shaft 30 is rotatably connected to the conical surface 36 through a connecting frame 34, a discharge port 35 is provided at the bottom end of the conical surface 36, a high-pressure liquid pump 17 is fixedly provided on the bottom right side of the top plate 14, the high-pressure liquid pump 17 is located directly below the mixing bin 15, the discharge port 35 is connected to the input end pipeline of the high-pressure liquid pump 17, the bottom output end pipeline of the high-pressure liquid pump 17 is connected to a nozzle 18, and the nozzle 18 is located directly above the pipeline 3. During cutting, water and abrasive are injected into the mixing bin 15 through the liquid inlet pipe 31 and the abrasive feed pipe 32, and then the mixing motor 16 is started to make the rotating shaft 30 start to rotate. When the rotating shaft 30 rotates, the stirring rod 33 is driven to start to rotate, so that the abrasive and water in the mixing bin 15 are fully mixed. The mixed fluid flows into the high-pressure liquid pump 17 along the discharge port 35, and is pressurized by the high-pressure liquid pump 17 and then ejected at high speed along the nozzle 18.

[0024] A driving wheel 19 is provided on the outer side of the top end of the rotating shaft 30, a vertical shaft 20 is vertically provided on the left side of the top plate 14, a driven wheel 21 is fixedly provided on the top end of the vertical shaft 20, the driving wheel 19 and the driven wheel 21 are located at the same height, a transmission belt 22 is meshed between the driving wheel 19 and the driven wheel 21, a driving bevel gear 23 is fixedly provided on the bottom end of the vertical shaft 20, a mounting block 27 is fixedly provided on the left side of the front side wall of the sliding plate 13, a horizontal shaft 25 is rotatably connected inside the mounting block 27, the horizontal shaft 25 is arranged parallel to the pipeline 3, the right end of the horizontal shaft 25 is connected to the driven bevel gear 24, the driving bevel gear 23 is meshed and connected with the driven bevel gear 24, and the left end of the horizontal shaft 25 is connected to the friction wheel 26. When the rotating shaft 30 rotates, the driving wheel 19 is driven to start rotating. When the driving wheel 19 rotates, the vertical shaft 20 is driven to start rotating through the transmission belt 22 meshing therewith. When the vertical shaft 20 rotates, the driving bevel gear 23 at the bottom is driven to start rotating. When the driving bevel gear 23 rotates, the horizontal shaft 25 is driven to rotate accordingly, so that the friction wheel 26 starts to rotate. When the top plate 14 moves downward, it drives the nozzle 18 and the friction wheel 26 to move downward accordingly. When the friction wheel 26 moves to contact the surface of the pipeline 3, the top plate 14 stops moving, and the pipeline 3 starts to rotate under the action of friction. The rollers 45 arranged toward the side walls of the pipeline 3 by the arc-shaped clamping block 44 and the friction roller 50 can reduce the friction force of the pipeline 3 when it rotates. The mixed fluid sprayed by the nozzle 18 can cut the pipeline 3 when it rotates, thereby effectively reducing defects such as burrs at the incision and improving the cutting quality.

[0025] The synchronous feeding mechanism 2 includes a housing 37, which is in a rectangular parallelepiped configuration. A feeding motor 48 is disposed on the inner top of the housing 37. The feeding motor 48 is slidably connected to the rear inner wall of the housing 37. A first connecting rod 47 is fixedly disposed on the top of the feeding motor 48. The top end of the first connecting rod 47 penetrates through the top of the housing 37 and is fixedly connected to the cross bar 12. The first connecting rod 47 is disposed perpendicular to the cross bar 12. When the cross bar 12 moves downward, it drives the first connecting rod 47 to move downward. At this time, the feeding motor 48 is started. When the feeding motor 48 is running, it drives the sliding shaft 49 and the friction roller 50 to start rotating in the direction of the baffle 7.

[0026] The output end of the feeding motor 48 is connected to a sliding shaft 49, and the other end of the sliding shaft 49 is connected to a slider, and the slider is slidably connected to the front inner wall of the housing 37. A friction roller 50 is fixedly arranged in the middle of the sliding shaft 49, and a fixed shaft 52 is arranged at the bottom of the housing 37. The two ends of the fixed shaft 52 are respectively rotatably connected to the front and rear inner walls of the housing 37, and a driven roller 51 is arranged in the middle of the fixed shaft 52. When the first connecting rod 47 moves downward, it drives the feeding motor 48 to move downward, and at this time, the sliding shaft 49 moves downward accordingly, and when the sliding shaft 49 moves downward, it drives the friction roller 50 to move downward.

[0027] The driven roller 51 is located directly below the friction roller 50, the sliding shaft 49 is arranged parallel to the fixed shaft 52, the sliding shaft 49 is arranged perpendicular to the pipe 3, the side walls of the driven roller 51 and the friction roller 50 are both provided with arc grooves, and the pipe 3 is located between the driven roller 51 and the friction roller 50. When the friction roller 50 moves downward to contact the surface of the pipe 3, the pipe 3 moves toward the baffle 7 under the action of friction force until the right end of the pipe 3 contacts the left side wall of the baffle 7 and stops, thereby realizing automatic synchronous conveyance of the pipe 3 during cutting.

[0028] The centering clamping mechanism 5 includes a housing 46, a gear plate 39 is rotatably arranged inside the housing 46, an inner hole 43 is opened at the center of the gear plate 39, the gear plate 39 is coaxially arranged with the pipe 3, a rack 38 is arranged between the gear plate 39 and the rear inner wall of the housing 46, the rack 38 is meshed with the gear plate 39, and the top end of the rack 38 passes through the top of the housing 46 and is vertically connected to the cross bar 12. When the cross bar 12 moves downward, it drives the rack 38 to move downward, so that the gear plate 39 meshed with it starts to rotate.

[0029] The surface of the gear plate 39 is evenly provided with a plurality of arc grooves 40, and a slide bar 41 is slidably provided inside the arc groove 40, and a movable rod 42 is vertically connected to the inner end of the slide bar 41, and the movable rod 42 faces the axis of the pipe 3, and the other end of the movable rod 42 is fixedly connected to an arc clamping block 44, and the arc clamping block 44 and the friction roller 50 are both provided with a plurality of rollers 45 on the side wall facing the pipe 3, and the rotation direction of the roller 45 is consistent with the rotation direction of the friction wheel 26. When the gear plate 39 rotates, the slide bar 41 is driven to slide toward the inner end of the arc groove 40, so that the movable rod 42 connected to the inner side of the slide bar 41 moves toward the direction of the pipe 3, and when the movable rod 42 moves, the arc clamping block 44 is driven to move accordingly, until the inner wall of the arc clamping block 44 abuts against the surface of the pipe 3, thereby realizing the centering clamping of the pipe 3 and ensuring the stability of the pipe 3 during cutting.

[0030] Working principle: before cutting, the baffle 7 on the right side of the top of the sliding processing table moves accordingly, so that the slide table 8 and the connecting plate 9 at the bottom thereof move accordingly. When the horizontal distance between the baffle 7 and the high-pressure water jet cutting mechanism is consistent with the required length of the pipe 3 to be cut, the connecting plate 9 is fixed by tightening the bolts 10, thereby fixing the baffle 7, and passing the pipe 3 through the synchronous feeding mechanism 2 and the centering clamping mechanism 5, so that the pipe 3 is located below the high-pressure water jet cutting mechanism; when cutting, the electric lifting rod 28 is driven to shorten, and when the top movable end of the electric lifting rod 28 moves downward, the sliding plate 13 is driven downward through the connecting rod 29, so that the cross bar 12 moves downward, and when the sliding plate 13 moves downward, the top plate 14 is driven downward, and then water and abrasive are injected into the mixing bin 15 through the liquid inlet pipe 31 and the abrasive feed pipe 32, and then the mixing motor 16 is started, so that the rotating shaft 30 starts to rotate, and when the rotating shaft 30 rotates, the stirring rod 33 is driven to start rotating, so that the abrasive and water in the mixing bin 15 are fully mixed, and after mixing The fluid flows into the high-pressure liquid pump 17 along the discharge port 35, and is pressurized by the high-pressure liquid pump 17 and then ejected at a high speed along the nozzle 18. When the rotating shaft 30 rotates, the driving wheel 19 is driven to start rotating. When the driving wheel 19 rotates, the vertical shaft 20 is driven to start rotating through the transmission belt 22 meshing therewith. When the vertical shaft 20 rotates, the driving bevel gear 23 at the bottom is driven to start rotating. When the driving bevel gear 23 rotates, the horizontal shaft 25 is driven to rotate accordingly, so that the friction wheel 26 starts to rotate. When the top plate 14 moves downward, it drives the nozzle 18 and the friction wheel 26 to move downward accordingly. When the friction wheel 26 moves to contact the surface of the pipeline 3, the top plate 14 stops moving at this time, and the pipeline 3 starts to rotate under the action of friction. The rollers 45 arranged toward the side walls of the pipeline 3 by the arc-shaped clamping block 44 and the friction roller 50 can reduce the friction force of the pipeline 3 when it rotates. The mixed fluid ejected by the nozzle 18 can cut the pipeline 3 when it rotates, thereby effectively reducing defects such as burrs at the incision and improving the cutting quality.

[0031] When the cross bar 12 moves downward, it drives the first connecting rod 47 downward. At this time, the feeding motor 48 is started. When the feeding motor 48 runs, it drives the sliding shaft 49 and the friction roller 50 to start rotating in the direction of the baffle 7. When the first connecting rod 47 moves downward, it drives the feeding motor 48 downward. At this time, the sliding shaft 49 moves downward accordingly. When the sliding shaft 49 moves downward, it drives the friction roller 50 downward. When the friction roller 50 moves downward until it contacts the surface of the pipe 3, the pipe 3 moves in the direction of the baffle 7 under the action of friction force until the right end of the pipe 3 contacts the left side wall of the baffle 7 and stops, thereby realizing automatic synchronous transportation of the pipe 3 during cutting.

[0032] When the cross bar 12 moves downward, it drives the rack 38 to move downward, causing the gear plate 39 meshing therewith to start rotating. When the gear plate 39 rotates, it drives the slide bar 41 to slide toward the inner end of the arc groove 40, causing the movable rod 42 connected to the inner side of the slide bar 41 to move toward the direction of the pipe 3. When the movable rod 42 moves, it drives the arc clamping block 44 to move accordingly until the inner wall of the arc clamping block 44 abuts against the surface of the pipe 3, thereby realizing the centering clamping of the pipe 3 and ensuring the stability of the pipe 3 during cutting.

[0033] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. A pipe cutting device, characterized in that: It comprises a processing table (1), a high-pressure water jet cutting mechanism, a synchronous feeding mechanism (2) and a centering clamping mechanism (5); The high-pressure water jet cutting mechanism is arranged on the top right side of the processing table (1); the synchronous feeding mechanism (2) is arranged on the top left end of the processing table (1); the centering clamping mechanism (5) is arranged between the high-pressure water jet cutting mechanism and the synchronous feeding mechanism (2); a pipeline (3) is arranged through the high-pressure water jet cutting mechanism, the centering clamping mechanism (5) and the synchronous feeding mechanism (2); the pipeline (3) is arranged parallel to the processing table (1); a baffle (7) is arranged on the right side of the high-pressure water jet cutting mechanism; the baffle (7) is in contact with the processing table (1); The processing table (1) is arranged vertically, the bottom of the baffle (7) is fixedly connected to a slide table (8), the slide table (8) is slidably connected to the processing table (1), a connecting plate (9) is fixedly arranged on the right side of the slide table (8), the top of the connecting plate (9) is threadedly connected to a fastening bolt (10), a plurality of adjustment holes (11) are evenly opened on the right end surface of the processing table (1), the bottom ends of the fastening bolts (10) pass through the connecting plate (9) and are threadedly connected to the adjustment holes (11), and a plurality of brackets (4) are fixedly arranged on the bottom of the processing table (1).

2. A pipe cutting device according to claim 1, characterized in that The high-pressure water jet cutting mechanism comprises a fixed plate (6), wherein the fixed plate (6) is arranged on the rear side of the pipe (3), the fixed plate (6) is arranged vertically to the processing table (1) and the baffle (7), a sliding plate (13) is slidably arranged on the top of the rear side wall of the fixed plate (6), an electric lifting rod (28) is arranged on the rear side of the fixed plate (6), the electric lifting rod (28) is arranged vertically to the processing table (1), a connecting rod (29) is fixedly connected between the top movable end of the electric lifting rod (28) and the rear side wall of the sliding plate (13), the top end of the sliding plate (13) is vertically connected to the top plate (14), the left side wall of the sliding plate (13) is fixedly connected to a cross bar (12), and the cross bar (12) is arranged parallel to the pipe (3).

3. A pipe cutting device according to claim 2, characterized in that A mixing bin (15) is fixedly arranged on the right side of the top of the top plate (14), a mixing motor (16) is fixedly arranged on the top of the mixing bin (15), a rotating shaft (30) is connected to the bottom output end of the mixing motor (16), a liquid inlet pipe (31) and an abrasive feed pipe (32) are respectively connected to the top of the side wall of the mixing bin (15) by pipelines, a plurality of stirring rods (33) are fixedly arranged on the side wall of the rotating shaft (30), a conical surface (36) is arranged on the inner bottom of the mixing bin (15), and the rotating shaft (30) is provided with a plurality of stirring rods (33). The bottom end is rotatably connected to the conical surface (36) through a connecting frame (34); a discharge port (35) is provided at the bottom end of the conical surface (36); a high-pressure liquid pump (17) is fixedly provided on the right side of the bottom of the top plate (14); the high-pressure liquid pump (17) is located directly below the mixing bin (15); the discharge port (35) is connected to an input end pipeline of the high-pressure liquid pump (17); a nozzle (18) is connected to the bottom output end pipeline of the high-pressure liquid pump (17); and the nozzle (18) is located directly above the pipeline (3).

4. A pipe cutting device according to claim 3, characterized in that A driving wheel (19) is arranged on the outer side of the top end of the rotating shaft (30); a vertical shaft (20) is arranged vertically on the left side of the top plate (14); a driven wheel (21) is fixedly arranged on the top end of the vertical shaft (20); the driving wheel (19) and the driven wheel (21) are located at the same height; a transmission belt (22) is meshed between the driving wheel (19) and the driven wheel (21); a driving bevel gear (23) is fixedly arranged on the bottom end of the vertical shaft (20); a mounting block (27) is fixedly arranged on the left side of the front side wall of the sliding plate (13); a horizontal shaft (25) is rotatably connected inside the mounting block (27); the horizontal shaft (25) is arranged parallel to the pipeline (3); a driven bevel gear (24) is connected to the right end of the horizontal shaft (25); the driving bevel gear (23) is meshed and connected to the driven bevel gear (24); and a friction wheel (26) is connected to the left end of the horizontal shaft (25).

5. A pipe cutting device according to claim 4, characterized in that The synchronous feeding mechanism (2) comprises a shell (46), the shell (46) is arranged in a rectangular parallelepiped, a feeding motor (48) is arranged on the inner top of the shell (46), the feeding motor (48) is slidably connected to the rear inner wall of the shell (46), a first connecting rod (47) is fixedly arranged on the top of the feeding motor (48), the top end of the first connecting rod (47) passes through the top of the shell (46) and is fixedly connected to the cross bar (12), and the first connecting rod (47) is arranged perpendicular to the cross bar (12).

6. A pipe cutting device according to claim 5, characterized in that The output end of the feeding motor (48) is connected to a sliding shaft (49), the other end of the sliding shaft (49) is connected to a slider, the slider is slidably connected to the front inner wall of the shell (46), a friction roller (50) is fixedly arranged in the middle of the sliding shaft (49), a fixed shaft (52) is arranged at the bottom of the shell (46), the two ends of the fixed shaft (52) are respectively rotatably connected to the front and rear inner walls of the shell (46), and a driven roller (51) is arranged in the middle of the fixed shaft (52).

7. A pipe cutting device according to claim 6, characterized in that The driven roller (51) is located directly below the friction roller (50), the sliding shaft (49) is arranged parallel to the fixed shaft (52), the sliding shaft (49) is arranged perpendicular to the pipeline (3), the side walls of the driven roller (51) and the friction roller (50) are both provided with arc-shaped grooves, and the pipeline (3) is located between the driven roller (51) and the friction roller (50).

8. A pipe cutting device according to claim 6, characterized in that The centering clamping mechanism (5) comprises a housing (37), a gear plate (39) is rotatably arranged inside the housing (37), an inner hole (43) is opened at the center of the gear plate (39), the gear plate (39) is coaxially arranged with the pipe (3), a rack (38) is arranged between the gear plate (39) and the rear inner wall of the housing (37), the rack (38) is meshingly connected with the gear plate (39), and the top end of the rack (38) passes through the top of the housing (37) and is vertically connected to the cross bar (12).

9. A pipe cutting device according to claim 8, characterized in that The surface of the gear plate (39) is evenly provided with a plurality of arc grooves (40), a slide rod (41) is slidably provided inside the arc groove (40), the inner end of the slide rod (41) is vertically connected with a movable rod (42), the movable rod (42) faces the axis of the pipeline (3), the other end of the movable rod (42) is fixedly connected with an arc clamping block (44), the arc clamping block (44) and the friction roller (50) are both provided with a plurality of rollers (45) on the side wall facing the pipeline (3), and the rotation direction of the rollers (45) is consistent with the rotation direction of the friction wheel (26).

10. A working method of a pipe cutting device according to any one of claims 1 to 9, characterized in that : The steps include: S1, sliding the baffle (7) on the right side of the top of the processing table (1) so that the slide table (8) and the connecting plate (9) at the bottom thereof move accordingly, and when the horizontal distance between the baffle (7) and the high-pressure water jet cutting mechanism is consistent with the required cutting length of the pipe (3), the connecting plate (9) is fixed by tightening the bolts (10), thereby fixing the baffle (7); S2, passing the pipeline (3) through the synchronous feeding mechanism (2) and the centering clamping mechanism (5), so that the pipeline (3) is located below the high-pressure water jet cutting mechanism; S3, when cutting, the electric lifting rod (28) is driven to shorten, and when the top movable end of the electric lifting rod (28) moves downward, the sliding plate (13) is driven to move downward through the connecting rod (29), so that the cross bar (12) moves downward, and when the cross bar (12) moves downward, the first connecting rod (47) is driven to move downward, and at this time, the feeding motor (48) is started, and when the feeding motor (48) is running, the sliding shaft (49) and the friction roller (50) start to rotate in the direction of the baffle (7), and when the first connecting rod (47) moves downward, the feeding motor (48) moves downward, and at this time, the sliding shaft (49) moves downward accordingly, and when the sliding shaft (49) moves downward, the friction roller (50) is driven to move downward; S4, when the friction roller (50) moves downward until it contacts the surface of the pipe (3), the pipe (3) moves in the direction of the baffle (7) under the action of the friction force until the right end of the pipe (3) contacts the left side wall of the baffle (7) and stops, thereby realizing automatic synchronous conveyance of the pipe (3) during cutting; S5, when the cross bar (12) moves downward, it drives the rack (38) to move downward, so that the gear plate (39) meshing therewith starts to rotate. When the gear plate (39) rotates, it drives the slide bar (41) to slide toward the inner end of the arc groove (40), so that the movable rod (42) connected to the inner side of the slide bar (41) moves in the direction of the pipe (3). When the movable rod (42) moves, it drives the arc clamping block (44) to move accordingly, until the inner wall of the arc clamping block (44) abuts against the surface of the pipe (3), thereby achieving centering clamping of the pipe (3) and ensuring the stability of the pipe (3) during cutting; S6, when the sliding plate (13) moves downward, the top plate (14) is driven to move downward, and at this time, water and abrasive are injected into the mixing bin (15) through the liquid inlet pipe (31) and the abrasive feed pipe (32), and then the mixing motor (16) is started to make the rotating shaft (30) start to rotate. When the rotating shaft (30) rotates, the stirring rod (33) is driven to start to rotate, and the abrasive and water in the mixing bin (15) are fully mixed. The mixed fluid flows into the high-pressure liquid pump (17) along the discharge port (35), is pressurized by the high-pressure liquid pump (17), and is ejected at high speed along the nozzle (18); S7, when the rotating shaft (30) rotates, the driving wheel (19) starts to rotate. When the driving wheel (19) rotates, the vertical shaft (20) starts to rotate through the transmission belt (22) meshing therewith. When the vertical shaft (20) rotates, the driving bevel gear (23) at the bottom starts to rotate. When the driving bevel gear (23) rotates, the horizontal shaft (25) is driven to rotate accordingly, so that the friction wheel (26) starts to rotate; S8, when the top plate (14) moves downward, the nozzle (18) and the friction wheel (26) are driven to move downward accordingly. When the friction wheel (26) moves to contact the surface of the pipe (3), the top plate (14) stops moving, and the pipe (3) starts to rotate under the action of the friction force. The rollers (45) arranged toward the side wall of the pipe (3) through the arc-shaped clamping block (44) and the friction roller (50) can reduce the friction force on the pipe (3) when it rotates. The mixed fluid sprayed by the nozzle (18) can cut the pipe (3) when it rotates, thereby effectively reducing defects such as burrs at the cut and improving the cutting quality.

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