Automatic rotary cutting device for pressure pipeline

Abstract

The invention discloses an automatic rotary cutting device for a pressure pipeline, and particularly relates to the technical field of pipeline machining, the automatic rotary cutting device comprises a workbench, the top of the workbench is fixedly connected with a protection plate, an annular groove is formed in the protection plate, three leakage grooves are formed in the bottom of the workbench, and the bottoms of the three leakage grooves communicate with a collecting box. Through cooperation of the rotating assembly, the limiting assembly, the blowing assembly, the cleaning assembly and the discharging assembly, continuous operation of placing, cutting, discharging and automatic cleaning of the pressure pipeline is achieved through the full-automatic process of the device, and the situation that after cutting is completed, workers still need to manually take materials is avoided; and the situation that workers need to additionally use cleaning tools for cleaning due to the fact that dust and chippings adhere to the outer portion of the cut pipeline and the working table face is avoided, the labor intensity of the workers is further reduced, the overall working efficiency of the device is improved, and diversified production requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline processing, and in particular to an automatic rotary cutting device for a pressure pipeline. Background Art

[0002] Pressure pipeline is a pipeline system used to transport fluids (including gas, liquid and slurry). It can work under a certain pressure to ensure that the fluid can be safely and efficiently transported from one place to another. Pressure pipeline is an important part of many industrial and civil facilities. Its safe operation is directly related to production safety and public safety. Therefore, the design, construction, operation and maintenance of pressure pipelines need to strictly comply with relevant laws, regulations and technical standards; Although the existing cutting device can perform fixed cutting on pipes of different specifications and sizes, its degree of automation is not high. After cutting, the staff still needs to manually remove the materials. After cutting, dust and debris are easily adhered to the outside of the pipe and the work surface, and the staff needs to use additional cleaning tools to clean them, which further increases the labor intensity of the staff and reduces the overall work efficiency of the existing device. Summary of the invention

[0003] In order to achieve the above object, the present invention provides the following technical solutions: An automatic rotary cutting device for a pressure pipe comprises: a workbench, a protective plate is fixedly connected to the top of the workbench, an annular groove is provided in the protective plate, three drain grooves are provided at the bottom of the workbench, the bottoms of the three drain grooves are connected to a collection box, and a discharge port is provided outside the collection box; A rotating assembly, the rotating assembly includes a fixed seat fixedly connected to the rear side of the protective plate, a motor is fixedly connected inside the fixed seat, a rotating shaft is fixedly connected to the front end of the motor, a driving wheel is fixedly connected to the outside of the rotating shaft, the driving wheel is connected to the driven wheel through a conveyor belt transmission, a fixed shaft is fixedly connected inside the driven wheel, and fixed gears are fixedly connected to the outside of the fixed shaft and the rotating shaft, and the two fixed gears are meshed with the same gear ring seat; A limit assembly, the limit assembly includes two electric push rods fixedly connected to the upper and lower sides of the gear ring seat, and also includes two first telescopic rods fixedly connected to the left and right sides of the gear ring seat, the two first telescopic rods and the two electric push rods are both fixedly connected to moving blocks at both ends close to each other, two adjacent moving blocks are hinged to the same rotating rod through two pins, and the rear sides of the four moving blocks are all fixedly connected to arc-shaped clamping plates; A blowing assembly, the blowing assembly comprising a first bevel gear fixedly connected to the front end of the rotating shaft, the first bevel gear is meshed with a second bevel gear outside, the second bevel gear is fixedly connected to the rotating shaft inside, and the top end of the rotating shaft is fixedly connected to a fan blade; A cleaning assembly, the cleaning assembly comprising a reciprocating screw rod fixedly connected to the outside of the fixed shaft, a moving column slidably connected to the outside of the reciprocating screw rod, a moving sleeve fixedly connected to the outside of the moving column, a cleaning rod fixedly connected to the bottom end of the moving column, and a second telescopic rod fixedly connected to the rear end of the cleaning rod; The material unloading component includes a support platform fixedly connected to the top of the workbench, a multi-stage electric telescopic rod fixedly connected to the bottom of the support platform, a moving rod fixedly connected to the telescopic end of the multi-stage electric telescopic rod, and a pneumatic clamp fixedly connected to the top of the moving rod.

[0004] In a possible implementation, the top of the protective plate is fixedly connected to a cylinder, the bottom end of the cylinder is fixedly connected to a movable seat, the movable seat is fixedly connected to a protective sleeve, the movable seat is fixedly connected to a cutting machine, the output end of the cutting machine is fixedly connected to a cutting blade, and the protective sleeve is sleeved outside the cutting blade.

[0005] In a possible implementation, two support plates are fixedly connected to the top of the support platform, two elastic telescopic rods are fixedly connected to the adjacent sides of the two support plates, and limiting plates are fixedly connected to the adjacent ends of the two elastic telescopic rods.

[0006] In a possible implementation, a limiting ring is fixedly connected to the rear side of the gear ring seat, the limiting ring is rotatably connected in the annular groove, a movable groove is opened on the top of the support platform, and the movable rod is slidably connected in the movable groove.

[0007] In a possible implementation, the rotating shaft and the fixed shaft are both rotatably connected to the protective plate, and the two arc-shaped clamping plates located in the horizontal direction are fixedly connected to both sides thereof, and the two arc-shaped clamping plates located in the vertical direction are fixedly connected to both sides thereof, and a plurality of anti-sliding blocks are fixedly connected to both sides thereof.

[0008] In a possible implementation, a fixing sleeve is rotatably connected to the bottom end of the rotating shaft, and a rear end of the fixing sleeve is fixedly connected to the front side of the protective plate.

[0009] In a possible implementation, the movable sleeve is sleeved on the outside of the reciprocating screw rod, and the rear end of the second telescopic rod is fixedly connected to the front side of the protective plate.

[0010] In a possible implementation, a movable frame is fixedly connected to the bottom end of the workbench, four self-locking universal wheels are provided at the bottom end of the movable frame, and a material unloading platform is provided at the top of the workbench.

[0011] In a possible implementation, a control box is provided on the top of the protective plate, and a displacement sensor is provided in the pneumatic clamp.

[0012] In a possible implementation, the output end of the displacement sensor is electrically connected to the input end of the control box, the power end of the electric push rod is electrically connected to the power output end of the control box, and the control end of the electric push rod is electrically connected to the output end of the control box.

[0013] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. Through the coordination of the rotating assembly, the limiting assembly, the blowing assembly, the cleaning assembly and the unloading assembly, the fully automated process of the device realizes the continuous operation of the placement, cutting, unloading and automatic cleaning of the pressure pipe, avoiding the need for manual material removal by the staff after the cutting is completed, and avoiding the need for the staff to use additional cleaning tools to clean up the dust and debris adhering to the outside of the pipe and the work surface after cutting, further reducing the labor intensity of the staff, and improving the overall work efficiency of the device, meeting the diversified production needs.

[0014] 2. Through the cooperation of the rotating assembly and the limit assembly, the device can perform high-precision and consistent cutting, which not only reduces material waste and improves the utilization rate of raw materials, but also greatly reduces the rework rate caused by cutting deviation. It not only makes the product edge smooth and the size uniform, but also greatly improves the appearance quality and overall performance of the product.

[0015] 3. Through the cylinder and displacement sensor, the device has a highly adjustable configuration function, allowing the operator to fine-tune the movement speed, force and position of the electric push rod, as well as the key parameters such as the blade speed, cutting depth and angle of the cutting machine according to specific needs. The device can easily adapt to pipes of various sizes and materials, whether plastic, metal or composite materials, to achieve accurate and efficient cutting operations. It not only improves the versatility of the production line, but also ensures the cutting quality of the pressure pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the connection between the protective plate and the cylinder of the present invention; Figure 3 This is a schematic diagram of the structure of the connection between the rotating shaft and the fixed gear of the present invention; Figure 4It is a schematic diagram of the structure of the connection between the protective plate and the second telescopic rod of the present invention; Figure 5 It is a schematic diagram of the structure of the connection between the multi-stage electric telescopic rod and the mobile rod of the present invention; Figure 6 It is a structural schematic diagram of the connection between the fixing base and the motor of the present invention; Figure 7 It is a schematic structural diagram of the connection between the first telescopic rod and the moving block of the present invention; Figure 8 It is a schematic structural diagram of the connection between the arc-shaped clamping plate and the anti-sliding block of the present invention.

[0018] Description of reference numerals: 1. Workbench; 2. Protective plate; 3. Annular groove; 4. Leakage groove; 5. Collection box; 6. Fixed seat; 7. Motor; 8. Rotating shaft; 9. Driving wheel; 10. Driven wheel; 11. Fixed shaft; 12. Fixed gear; 13. Gear ring seat; 14. Electric push rod; 15. First telescopic rod; 16. Moving block; 17. Rotating rod; 18. Arc clamping plate; 19. First bevel gear; 20. Second bevel gear; 21. Rotating shaft; 22. Fan blade; 23. Reciprocating screw rod; 24. Moving column; 25 , moving sleeve; 26, cleaning rod; 27, second telescopic rod; 28, supporting platform; 29, multi-stage electric telescopic rod; 30, moving rod; 31, pneumatic clamp; 32, cylinder; 33, moving seat; 34, protective sleeve; 35, cutting machine; 36, cutting blade; 37, supporting plate; 38, elastic telescopic rod; 39, limit plate; 40, limit ring; 41, moving groove; 42, pulley; 43, anti-sliding block; 44, fixed sleeve; 45, moving frame; 46, control box; 47, displacement sensor. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] The embodiment of the present application solves the problems in the prior art by providing an automatic rotary cutting device for a pressure pipe.

[0021] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows: The specific structure of this embodiment is as follows: Figure 1-Figure 8 As shown, an automatic rotary cutting device for a pressure pipe comprises: a workbench 1, a protective plate 2 is fixedly connected to the top of the workbench 1, an annular groove 3 is provided in the protective plate 2, three drain grooves 4 are provided at the bottom of the workbench 1, the bottoms of the three drain grooves 4 are connected to a collecting box 5, and a discharge port is provided outside the collecting box 5; The rotating assembly includes a fixing seat 6 fixedly connected to the rear side of the protective plate 2. By setting the fixing seat 6, the fixing seat 6 can support the motor 7 to prevent the motor 7 from shaking or deviating during use, thereby ensuring the stable use of the motor 7; A motor 7 is fixedly connected inside the fixed seat 6, a rotating shaft 8 is fixedly connected to the front end of the motor 7, a driving wheel 9 is fixedly connected outside the rotating shaft 8, the driving wheel 9 is connected to a driven wheel 10 through a conveyor belt transmission, a fixed shaft 11 is fixedly connected inside the driven wheel 10, and fixed gears 12 are fixedly connected outside the fixed shaft 11 and the rotating shaft 8, and the two fixed gears 12 are meshed with the same gear ring seat 13; The limit assembly includes two electric push rods 14 fixedly connected to the upper and lower sides of the gear ring seat 13, and also includes two first telescopic rods 15 fixedly connected to the left and right sides of the gear ring seat 13. By setting the two first telescopic rods 15, the two arc-shaped clamping plates 18 in two horizontal directions are offset and misaligned when moving, thereby ensuring the stable movement of the two arc-shaped clamping plates 18; The two first telescopic rods 15 and the two electric push rods 14 are both fixedly connected to the two ends thereof close to each other with moving blocks 16, two adjacent moving blocks 16 are hingedly connected to the same rotating rod 17 through two pins, and the rear sides of the four moving blocks 16 are all fixedly connected to arc-shaped clamping plates 18; The blowing assembly includes a first bevel gear 19 fixedly connected to the front end of the rotating shaft 8, the first bevel gear 19 is meshed with a second bevel gear 20, the second bevel gear 20 is fixedly connected to the rotating shaft 21, and the top end of the rotating shaft 21 is fixedly connected to the fan blade 22; The cleaning assembly includes a reciprocating screw rod 23 fixedly connected to the outside of the fixed shaft 11, a moving column 24 is slidably connected to the outside of the reciprocating screw rod 23, a moving sleeve 25 is fixedly connected to the outside of the moving column 24, a cleaning rod 26 is fixedly connected to the bottom end of the moving column 24, and a second telescopic rod 27 is fixedly connected to the rear end of the cleaning rod 26; The material unloading component includes a support platform 28 fixedly connected to the top of the workbench 1, a multi-stage electric telescopic rod 29 fixedly connected to the bottom of the support platform 28, a moving rod 30 fixedly connected to the telescopic end of the multi-stage electric telescopic rod 29, and a pneumatic clamp 31 fixedly connected to the top of the moving rod 30.

[0022] In some examples, the top of the protection plate 2 is fixedly connected to a cylinder 32, the bottom of the cylinder 32 is fixedly connected to a moving seat 33, and the moving seat 33 is fixedly connected to a protective sleeve 34. By providing the protective sleeve 34, the cutting blade 36 can be protected to prevent debris from splashing around, and the safety of the cutting blade 36 is also guaranteed; A cutter 35 is fixedly connected inside the movable seat 33 , a cutting blade 36 is fixedly connected to the output end of the cutter 35 , and the protective cover 34 is sleeved on the outside of the cutting blade 36 .

[0023] In some examples, two support plates 37 are fixedly connected to the top of the support platform 28, and two elastic telescopic rods 38 are fixedly connected to the two sides of the two support plates 37 that are close to each other. By setting the two elastic telescopic rods 38, the pressure pipe can be positioned in cooperation with the limit plate 39 to avoid misalignment during movement. The two ends of the two corresponding elastic telescopic rods 38 that are close to each other are fixedly connected to the limiting plates 39 .

[0024] In some examples, the rear side of the gear ring seat 13 is fixedly connected to a limiting ring 40, and the limiting ring 40 is rotatably connected in the annular groove 3. By providing the annular groove 3, the cooperation between the annular groove 3 and the limiting ring 40 can prevent the gear ring seat 13 from falling off during rotation, thereby ensuring the stable rotation of the gear ring seat 13. A movable groove 41 is provided at the top of the support platform 28. By setting the movable groove 41 and the cooperation between the movable groove 41 and the movable rod 30, it is possible to avoid the movable rod 30 from being offset and stuck during movement, thereby ensuring the stable movement of the movable rod 30. The movable rod 30 is slidably connected in the movable groove 41.

[0025] In some examples, the rotating shaft 8 and the fixed shaft 11 are both rotatably connected to the protective plate 2, and the two sides of the two arc-shaped clamping plates 18 located in the horizontal direction are fixedly connected with a plurality of pulleys 42. By providing a plurality of pulleys 42, the friction force of the pressure pipe can be reduced during the movement, which facilitates the movement of the pressure pipe and further reduces the pressure of the multi-stage electric telescopic rod 29. Multiple anti-sliding blocks 43 are fixedly connected to the two sides of the two arc-shaped clamps 18 located in the vertical direction. By setting up multiple anti-sliding blocks 43, the arc-shaped clamps 18 can drive the pressure pipe to rotate synchronously when limiting the position of the pressure pipe, avoiding slipping and ensuring the stable rotation of the pressure pipe.

[0026] In some examples, the bottom end of the rotating shaft 21 is rotatably connected to a fixing sleeve 44. By providing the fixing sleeve 44, the fixing sleeve 44 can support the rotating shaft 21 to prevent the rotating shaft 21 from shaking and falling during rotation, thereby ensuring stable rotation of the rotating shaft 21. The rear end of the fixed sleeve 44 is fixedly connected to the front side of the protective plate 2, the movable sleeve 25 is sleeved on the outside of the reciprocating screw rod 23, the rear end of the second telescopic rod 27 is fixedly connected to the front side of the protective plate 2, and the bottom end of the workbench 1 is fixedly connected to the movable frame 45. The bottom end of the movable frame 45 is provided with four self-locking universal wheels, and the top of the workbench 1 is provided with a unloading platform.

[0027] In some examples, a control box 46 is provided on the top of the protective plate 2, a displacement sensor 47 is provided in the pneumatic clamp 31, the output end of the displacement sensor 47 is electrically connected to the input end of the control box 46, the power end of the electric push rod 14 is electrically connected to the power output end of the control box 46, and the control end of the electric push rod 14 is electrically connected to the output end of the control box 46.

[0028] The working principle of the present invention is: when using the device, first move the device to a suitable position, then place the pressure pipe to be cut on the support table 28 and place it between the two elastic telescopic rods 38 and the limiting plate 39, and the two elastic telescopic rods 38 can push the limiting plate 39 to position the pressure pipe under the action of their own elastic force; Then the pneumatic clamp 31 is started to limit the rear end of the pressure pipe, and then the moving distance of the multi-stage electric telescopic rod 29 is set according to the position to be cut. The displacement sensor 47 can monitor the current position of the multi-stage electric telescopic rod 29 in real time, and feed back the position information to the control box 46 in the form of an electrical signal. The microprocessor in the control box 46 receives the signal of the displacement sensor 47 and converts it into a digital signal for further processing. The control box 46 will determine the next action of the electric push rod 14 according to a preset control algorithm. The control box 46 sends an instruction to the driver of the multi-stage electric telescopic rod 29, and the driver adjusts the current and direction of the multi-stage electric telescopic rod 29 according to the instruction to move the multi-stage electric telescopic rod 29 to the target position.

[0029] At the same time, the controller can start the two electric push rods 14, so that the upper and lower electric push rods 14 can be relatively contracted, and the corresponding moving blocks 16 can be driven to move relatively, and then under the action of the pin, the corresponding two rotating rods 17 are driven to rotate toward each other, so that the two moving blocks 16 in the horizontal direction drive the corresponding arc clamping plates 18 and a plurality of pulleys 42 to move toward each other, and the two first telescopic rods 15 are in a stretched state until the plurality of pulleys 42 fit outside the pressure pipe, and the pneumatic clamp 31 can clamp the pressure pipe and drive it to move in the horizontal plurality of pulleys 42 until the cutting position is moved to just below the cutting blade 36; Then, the two electric push rods 14 are restarted, so that the upper and lower electric push rods 14 move toward each other, thereby driving the corresponding moving blocks 16 to move toward each other, so that the two moving blocks 16 in the horizontal direction drive the corresponding arc-shaped clamping plates 18 and a plurality of pulleys 42 to move relative to restore the original state, so that the two first telescopic rods 15 are in a retracted state, until the two arc-shaped clamping plates 18 drive the plurality of anti-sliding blocks 43 to clamp and limit the pressure pipe, and at the same time, the pneumatic clamping jaws 31 release the clamping of the pressure pipe; Then, the cutting machine 35 is started, which can drive the cutting blade 36 to rotate continuously. At the same time, the cylinder 32 is started, which can push the moving seat 33 downward, thereby driving the cutting machine 35, the cutting blade 36 and the protective cover 34 to move downward synchronously until the cutting blade 36 can cut the pressure pipe. At this time, the motor 7 is started, and the motor 7 drives the rotating shaft 8 and the driving wheel 9 to rotate continuously, and the driving wheel 9 drives the driven wheel 10 and the fixed shaft 11 to rotate synchronously through the conveyor belt, so that the two fixed gears 12 can be driven to rotate continuously, and then the gear ring seat 13 and the limit ring 40 can be driven to rotate continuously in the annular groove 3, and the two electric push rods 14, the first telescopic rod 15, the rotating rod 17 and the arc clamping plate 18 can be driven to rotate synchronously, and the corresponding two arc clamping plates 18 can drive the multiple anti-sliding blocks 43 and the pressure pipeline to rotate synchronously, so that the cutting blade 36 can perform rotational cutting on the pressure pipeline; When the cutting is completed, the cutting machine 35 is turned off, and the cylinder 32 is started to drive the cutting machine 35, the cutting blade 36 and the protective cover 34 to move upward synchronously, and the two electric push rods 14 are started again and the motor 7 is turned off, and the two electric push rods 14 can push the two moving blocks 16 and the corresponding two arc-shaped clamping plates 18 and multiple anti-sliding blocks 43 to separate from the pressure pipe, while the other two arc-shaped clamping plates 18 and multiple pulleys 42 fit with the pressure pipe, and the pneumatic clamp 31 re-clamps the pressure pipe to push it to unload; During the unloading process, the motor 7 is restarted, and the motor 7 can drive the rotating shaft 8 and the first bevel gear 19 to rotate continuously, and the first bevel gear 19 can drive the second bevel gear 20, the rotating shaft 21 and the fan blade 22 to rotate continuously in the fixed sleeve 44, and the fan blade 22 can accelerate the air flow, and can blow off the dust and debris adhering to the outside of the pressure pipe. At the same time, the fixed shaft 11 can drive the reciprocating screw rod 23 to rotate continuously, and the reciprocating screw rod 23 can drive the moving column 24 and the moving sleeve 25 to move back and forth, thereby driving the cleaning rod 26 to move back and forth on the workbench 1, so that the dust and debris can fall into the collection box 5 through the leakage groove 4, and then can be taken out from the discharge port for centralized treatment; Until the pressure pipe falls on the unloading table and is transferred, then repeat the above steps.

[0030] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic rotary cutting device for a pressure pipe, characterized in that: include: A workbench (1), wherein a protective plate (2) is fixedly connected to the top of the workbench (1), an annular groove (3) is provided in the protective plate (2), three drain grooves (4) are provided at the bottom of the workbench (1), the bottoms of the three drain grooves (4) are connected to a collection box (5), and a discharge port is provided outside the collection box (5); A rotating assembly, the rotating assembly comprising a fixed seat (6) fixedly connected to the rear side of the protective plate (2), a motor (7) fixedly connected inside the fixed seat (6), a rotating shaft (8) fixedly connected to the front end of the motor (7), a driving wheel (9) fixedly connected outside the rotating shaft (8), the driving wheel (9) connected to a driven wheel (10) through a conveyor belt transmission, a fixed shaft (11) fixedly connected inside the driven wheel (10), the fixed shaft (11) and the rotating shaft (8) both fixedly connected to fixed gears (12), and the two fixed gears (12) meshing with the same gear ring seat (13); A limit assembly, the limit assembly comprising two electric push rods (14) fixedly connected to the upper and lower sides of the gear ring seat (13), and also comprising two first telescopic rods (15) fixedly connected to the left and right sides of the gear ring seat (13), the two first telescopic rods (15) and the two electric push rods (14) being fixedly connected to moving blocks (16) at both ends close to each other, two adjacent moving blocks (16) being hinged to the same rotating rod (17) via two pins, and the rear sides of the four moving blocks (16) being fixedly connected to arc-shaped clamping plates (18); A blowing assembly, the blowing assembly comprising a first bevel gear (19) fixedly connected to the front end of the rotating shaft (8), the first bevel gear (19) being externally meshed with a second bevel gear (20), the second bevel gear (20) being internally fixedly connected to a rotating shaft (21), and a fan blade (22) being fixedly connected to the top end of the rotating shaft (21); A cleaning assembly, the cleaning assembly comprising a reciprocating screw (23) fixedly connected to the outside of the fixed shaft (11), a moving column (24) slidably connected to the outside of the reciprocating screw (23), a moving sleeve (25) fixedly connected to the outside of the moving column (24), a cleaning rod (26) fixedly connected to the bottom end of the moving column (24), and a second telescopic rod (27) fixedly connected to the rear end of the cleaning rod (26); A material unloading assembly, the material unloading assembly comprising a support platform (28) fixedly connected to the top of a workbench (1), a multi-stage electric telescopic rod (29) fixedly connected to the bottom of the support platform (28), a moving rod (30) fixedly connected to the telescopic end of the multi-stage electric telescopic rod (29), and a pneumatic clamp (31) fixedly connected to the top of the moving rod (30).

2. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: The top of the protective plate (2) is fixedly connected to a cylinder (32), the bottom of the cylinder (32) is fixedly connected to a movable seat (33), the movable seat (33) is fixedly connected to a protective sleeve (34), the movable seat (33) is fixedly connected to a cutting machine (35), the output end of the cutting machine (35) is fixedly connected to a cutting blade (36), and the protective sleeve (34) is sleeved outside the cutting blade (36).

3. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: The top of the support platform (28) is fixedly connected to two support plates (37), and the adjacent two sides of the two support plates (37) are fixedly connected to two elastic telescopic rods (38), and the adjacent two ends of the two elastic telescopic rods (38) are fixedly connected to limit plates (39).

4. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: A limit ring (40) is fixedly connected to the rear side of the gear ring seat (13), and the limit ring (40) is rotatably connected in the annular groove (3). A moving groove (41) is formed on the top of the support platform (28), and the moving rod (30) penetrates and is slidably connected in the moving groove (41).

5. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: The rotating shaft (8) and the fixed shaft (11) are both rotatably connected to the protective plate (2); the two sides of the two arc-shaped clamping plates (18) located in the horizontal direction are fixedly connected to a plurality of pulleys (42); the two sides of the two arc-shaped clamping plates (18) located in the vertical direction are fixedly connected to a plurality of anti-sliding blocks (43).

6. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: The bottom end of the rotating shaft (21) is rotatably connected to a fixing sleeve (44), and the rear end of the fixing sleeve (44) is fixedly connected to the front side of the protective plate (2).

7. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: The movable sleeve (25) is sleeved on the outside of the reciprocating screw rod (23), and the rear end of the second telescopic rod (27) is fixedly connected to the front side of the protective plate (2).

8. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: The bottom end of the workbench (1) is fixedly connected to a movable frame (45), the bottom end of the movable frame (45) is provided with four self-locking universal wheels, and the top of the workbench (1) is provided with a material unloading platform.

9. The automatic rotary cutting device for pressure pipes according to claim 1, characterized in that: A control box (46) is provided on the top of the protective plate (2), and a displacement sensor (47) is provided inside the pneumatic clamp (31).

10. The automatic rotary cutting device for pressure pipes according to claim 9, characterized in that: The output end of the displacement sensor (47) is electrically connected to the input end of the control box (46), the power supply end of the electric push rod (14) is electrically connected to the power supply output end of the control box (46), and the control end of the electric push rod (14) is electrically connected to the output end of the control box (46).

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