CN210172553U

CN210172553U - Pipe turning mechanism

Info

Publication number: CN210172553U
Application number: CN201920794449.8U
Authority: CN
Inventors: Wenguang Li; 李文广
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-03-24
Anticipated expiration: 2029-05-29

Abstract

The utility model relates to the technical field of accessory devices of elbow processing equipment, in particular to a pipe turning mechanism which can control a first servo motor to change the rotating speed thereof more accurately so as to reduce the difficulty of changing the rotating speed of the first servo motor when a cutter head keeps the optimal distance from an elbow port, thereby improving the use convenience of the pipe turning mechanism; the automatic elbow machining device comprises a rack, a discharging manipulator assembly, a feeding positioning manipulator assembly, a turntable assembly and two groups of elbow machining assemblies, wherein a mounting hole penetrates through the front end of the rack, each group of elbow machining assemblies comprises a cutter head, a power mechanism and a displacement mechanism, and the displacement mechanism is provided with a first servo motor, a limiting slide rail assembly and a transmission lead screw; the mounting rack is characterized by further comprising two groups of mounting racks, two groups of cylinders, two groups of positioning plates and two groups of pull rod displacement sensors, the rear ends of the two groups of mounting racks are connected with the upper left side and the upper right side of the front end of the rack respectively, and the top ends of the two groups of mounting racks are provided with two groups of mounting grooves respectively.

Description

Pipe turning mechanism

Technical Field

The utility model relates to a technical field of elbow processing equipment auxiliary device especially relates to a pipe type turning mechanism.

Background

As is well known, an elbow processing tool is required in a pipe fitting workshop of a pipe fitting production plant, wherein a pipe turning mechanism is a device for turning two ports of an elbow with an included angle of 90 degrees, and is widely used in the field of elbow processing; the existing pipe turning mechanism comprises a rack, a discharging manipulator component, a feeding positioning manipulator component, a turntable component and two groups of elbow processing components, wherein a mounting hole is formed in the front end of the rack in a penetrating manner, the turntable component is positioned at the bottom of the mounting hole, a discharging frame is arranged at the top of the turntable component, two groups of discharging grooves are respectively formed in the front side and the rear side of the top end of the discharging frame, the discharging manipulator component and the feeding positioning manipulator component are respectively positioned in the left upper region and the right upper region of the front end of the rack, a linear guide rail component is fixedly arranged on the left side of the rack, a conveying cylinder is arranged in the linear guide rail component, material grabbing cylinders are respectively arranged at the output ends of the discharging manipulator component and the feeding positioning manipulator component, an operating mechanism is arranged at the output end of the feeding positioning manipulator component, a fastening oil cylinder component is arranged at the middle position of the top of the rack, the two groups of elbow processing assemblies are respectively positioned in the left upper area and the right upper area of the rack, each group of elbow processing assemblies comprises a cutter disc, a power mechanism and a displacement mechanism, the displacement mechanism is provided with a first servo motor, a limiting slide rail assembly and a transmission lead screw, the output end of the first servo motor is rotatably connected with the input end of the transmission lead screw, the power mechanism is provided with a driving motor and a fixing assembly, the output end of the driving motor is provided with a speed reducer, the output end of the speed reducer is connected with the fixed end of the cutter disc, the speed reducer is connected with the fixing assembly, the fixing assembly is in threaded connection with the transmission lead screw, and the two groups of cutter discs; when the existing pipe turning mechanism is used, firstly, a worker controls a feeding positioning mechanical arm component to grab a bend to be machined by operating an operating mechanism, then the bend is placed on a discharging groove of a discharging frame of a rotary disc component by the feeding positioning mechanical arm component and finely adjusts the bend, then the rotary disc component is controlled to drive the bend to rotate to a machining part, meanwhile, an oil cylinder component is fastened to act to tightly press the bend in the discharging groove of the rotary disc, then, a new group of bend to be machined is placed in the other group of discharging groove of the rotary disc, at the moment, two groups of driving motors of two groups of bend machining components are respectively started to enable output ends of the two groups of driving motors to respectively drive two groups of cutter heads to rotate by a speed reducer, simultaneously, two groups of first servo motors simultaneously act to respectively drive two groups of transmission screw rods to rotate, and two groups of fixing components respectively drive the two groups of cutter heads to respectively move towards two ports, when two groups of rotating cutter heads contact two groups of ports of the elbow, the displacement speeds of the two groups of cutter heads are slowed down and the two ends of the elbow are turned, after the elbow is machined, the two groups of elbow machining assemblies are reset respectively, meanwhile, the turntable assembly is reset and rotates, then the unloading manipulator assembly is controlled to automatically place the elbow on the linear guide rail assembly, and under the control of the delay control assembly of the unloading manipulator assembly, the elbow falls to the unloading end of the linear guide rail assembly, the conveying cylinder acts to push the group of elbow away from the unloading end so as not to influence the unloading operation of the elbow behind, and at the moment, the machining process of the group of elbow is completed; the existing pipe turning mechanism is found in use, a worker needs to control the first servo motor to drive the disc to move close to the port of the elbow through the transmission screw rod, when the disc is about to contact the port, the rotating speed of the first servo motor needs to be changed to enable the disc to process the port of the elbow, however, due to the reason of human factors, the difficulty of changing the rotating speed of the first servo motor when the disc and the port of the elbow keep the optimal distance is high, the use convenience of the pipe turning mechanism is reduced, and therefore the practicability is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can change its rotational speed by comparatively accurate first servo motor of control to reduce the degree of difficulty that changes first servo motor rotational speed when blade disc and elbow port keep the optimum distance, therefore improved the use convenience of pipe type turning mechanism, thereby the pipe type turning mechanism of reinforcing practicality.

The utility model discloses a pipe turning mechanism, which comprises a frame, a discharging manipulator component, a feeding positioning manipulator component, a turntable component and two groups of elbow processing components, wherein the front end of the frame is provided with a mounting hole in a penetrating way, the turntable component is arranged at the bottom of the mounting hole, the top of the turntable component is provided with a discharging frame, the front side and the rear side of the top end of the discharging frame are respectively provided with two groups of discharging grooves, the discharging manipulator component and the feeding positioning manipulator component are respectively arranged at the left upper region and the right upper region of the front end of the frame, the left side of the support is fixedly provided with a linear guide rail component, a conveying cylinder is arranged in the linear guide rail component, the output ends of the discharging manipulator component and the feeding positioning manipulator component are respectively provided with a grabbing cylinder, the output end of the feeding positioning manipulator component is provided with an operating mechanism, the middle position of the top of the frame is provided with a fastening oil cylinder, the two groups of elbow processing assemblies are respectively positioned in the left upper area and the right upper area of the rack, each group of elbow processing assemblies comprises a cutter disc, a power mechanism and a displacement mechanism, the displacement mechanism is provided with a first servo motor, a limiting slide rail assembly and a transmission lead screw, the output end of the first servo motor is rotatably connected with the input end of the transmission lead screw, the power mechanism is provided with a driving motor and a fixing assembly, the output end of the driving motor is provided with a speed reducer, the output end of the speed reducer is connected with the fixed end of the cutter disc, the speed reducer is connected with the fixing assembly, the fixing assembly is in threaded connection with the transmission lead screw, and the two groups of cutter discs; the rear ends of the two groups of mounting frames are respectively connected with the left upper side and the right upper side of the front end of the frame, the top ends of the two groups of mounting frames are respectively provided with two groups of mounting grooves, the inner ends of the two groups of mounting grooves are respectively communicated with two groups of extension openings, the bottom ends of the two groups of air cylinders are respectively connected with the bottom ends of the two groups of mounting grooves, the output ends of the two groups of air cylinders respectively penetrate through the two groups of extension openings from the two groups of mounting grooves and respectively extend to the inner sides of the two groups of mounting frames, the output ends of the two groups of air cylinders are respectively vertically connected with the middle parts of the outer ends of the two groups of positioning plates, the middle parts of the two groups of mounting grooves are respectively provided with two groups of partition plates, the bottom ends of the two groups of pull rod displacement sensors are respectively connected with the top ends of the two groups, the output ends of the two groups of pull rod displacement sensors are respectively and vertically connected with the upper sides of the outer ends of the two groups of positioning plates, the two groups of pull rod displacement sensors, the two groups of air cylinders and the two groups of transmission screw rods are respectively kept in a parallel state, and the two groups of positioning plates are respectively positioned in the same plane with the two groups of cutter heads.

The pipe turning mechanism of the utility model also comprises two groups of fixed rods, two groups of guide rings, two groups of fastening bolts, two groups of fixing rings and two groups of linear laser lamp positioning components, the bottoms of the rear ends of the two groups of fixed rods are respectively and vertically connected with the inner sides of the front ends of the two groups of mounting racks, the two groups of guide rings are respectively and slidably sleeved with the two groups of fixed rods, the outer ends of the inner side walls of the two groups of guide rings are respectively provided with two groups of fastening threaded holes in a penetrating way, the inner ends of the two groups of fastening bolts are respectively inserted into the two groups of fastening threaded holes from the outer sides of the two groups of guide rings in a screw-mounting way, the inner ends of the two groups of fastening bolts are respectively clung to the outer ends of the two groups of fixing rods, the two groups of fixing rings are respectively fixedly sleeved with the output ends of the two groups of in-line laser lamp positioning components, the rear ends of the two groups of fixing rings are respectively provided with two groups of connecting rods, and the rear ends of the two groups of connecting rods are respectively connected with the front ends of the two groups of guide rings.

The utility model discloses a pipe turning mechanism, still include second servo motor, driving gear, rotating gear and three sets of spacing pin poles, the carousel subassembly is provided with carousel board and hydro-cylinder, the middle bottom of frame is provided with the working chamber, and left front side, right front side and the rear side of the top lateral wall of working chamber are connected with the bottom of three sets of spacing pin poles respectively, the bottom left front side, right front side and the rear side of carousel board are provided with three sets of keyway respectively, three sets of keyway slide with three sets of spacing pin poles respectively and clamp, the bottom of hydro-cylinder is connected with the bottom of working chamber, the output of hydro-cylinder is connected with the bottom bearing of rotating gear, the top of rotating gear is connected with the bottom of carousel board, the second servo motor is provided with the mount, the bottom of mount is connected with the bottom of working chamber, the output of second servo motor is connected with the driving gear key, the left end of the driving gear is meshed with the top of the right end of the rotating gear.

Compared with the prior art, the beneficial effects of the utility model are that: after the elbow is placed on the material placing frame of the turntable component, at the moment, two groups of cylinders firstly drive two groups of positioning plates to respectively approach to two ports of the elbow, simultaneously, the output ends of two groups of pull rod displacement sensors respectively move synchronously with the two groups of positioning plates, when the two groups of positioning plates respectively push against two ends of the elbow, then the two groups of pull rod displacement sensors respectively measure the displacement strokes when two groups of cutter heads respectively contact with two ports of the elbow, then the output ends of the two groups of cylinders respectively drive two groups of positioning plates and the output ends of two groups of pull rod displacement sensors to reset, then the turntable component rotates the elbow to a processing position, simultaneously, the two groups of pull rod displacement sensors respectively send action signals to two groups of first servo motors, then the two groups of first servo motors respectively drive the two groups of cutter heads to respectively approach to the elbow according to the displacement strokes, after the pipe turning mechanism moves to the determined displacement stroke, the rotating speeds of the two groups of first servo motors are respectively and automatically changed to continuously drive the two groups of cutter heads to slowly move to process the elbow, so that the rotating speeds of the first servo motors are changed through accurately controlling the first servo motors, the difficulty of changing the rotating speeds of the first servo motors when the cutter heads keep the optimal distance from the elbow port is reduced, the use convenience of the pipe turning mechanism is improved, and the practicability is enhanced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a schematic structural diagram of the present invention;

fig. 4 is a schematic structural diagram of the present invention;

FIG. 5 is a schematic structural view of the connection between the fixing rod and the linear laser lamp positioning assembly of the present invention;

in the drawings, the reference numbers: 1. a frame; 2. a discharge manipulator assembly; 3. a feeding positioning manipulator assembly; 4. a material placing frame; 5. a linear guide assembly; 6. a material grabbing cylinder; 7. an operating mechanism; 8. Fastening the oil cylinder assembly; 9. a compression block; 10. a cutter head; 11. a first servo motor; 12. a limiting slide rail component; 13. a transmission screw rod; 14. a drive motor; 15. a speed reducer; 16. two sets of mounting brackets; 17. two groups of cylinders; 18. two groups of positioning plates; 19. two groups of pull rod displacement sensors; 20. two groups of fixed rods; 21. two sets of guide rings; 22. two groups of fastening bolts; 23. two groups of fixing rings; 24. two groups of linear laser lamp positioning components; 25. a second servo motor; 26. a driving gear; 27. a rotating gear; 28. three sets of limit pin rods.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 5, the pipe turning mechanism of the present invention comprises a frame 1, a discharging manipulator assembly 2, a feeding positioning manipulator assembly 3, a turntable assembly and two sets of elbow processing assemblies, wherein a mounting hole is provided through the front end of the frame 1, the turntable assembly is located at the bottom of the mounting hole, a discharging frame 4 is provided at the top of the turntable assembly, two sets of discharging slots are respectively provided at the front side and the rear side of the top end of the discharging frame 4, the discharging manipulator assembly 2 and the feeding positioning manipulator assembly 3 are respectively located at the upper left region and the upper right region of the front end of the frame 1, a linear guide rail assembly 5 is fixedly provided at the left side of the support, a conveying cylinder is provided in the linear guide rail assembly 5, the output ends of the discharging manipulator assembly 2 and the feeding positioning manipulator assembly 3 are both provided with a manipulator catching cylinder 6, and the output end of the feeding positioning manipulator assembly 3 is provided with an operating, a fastening oil cylinder assembly 8 is arranged in the middle of the top of the rack 1, a pressing block 9 is arranged at the bottom end of the fastening oil cylinder assembly 8, two groups of elbow processing assemblies are respectively located in the upper left area and the upper right area of the rack 1, each group of elbow processing assembly comprises a cutter head 10, a power mechanism and a displacement mechanism, the displacement mechanism is provided with a first servo motor 11, a limiting slide rail assembly 12 and a transmission lead screw 13, the output end of the first servo motor 11 is rotatably connected with the input end of the transmission lead screw 13, the power mechanism is provided with a driving motor 14 and a fixing assembly, the output end of the driving motor 14 is provided with a speed reducer 15, the output end of the speed reducer 15 is connected with the fixed end of the cutter head 10, the speed reducer 15 is connected with the fixing assembly, the fixing assembly is in threaded connection with the transmission lead screw 13; the rear ends of the two groups of mounting frames 16 are respectively connected with the left upper side and the right upper side of the front end of the frame 1, the top ends of the two groups of mounting frames 16 are respectively provided with two groups of mounting grooves, the inner ends of the two groups of mounting grooves are respectively communicated with two groups of extension openings, the bottom ends of the two groups of mounting grooves 17 are respectively connected with the bottom ends of the two groups of mounting grooves, the output ends of the two groups of mounting grooves 17 respectively penetrate through the two groups of extension openings from the two groups of mounting grooves and respectively extend to the inner sides of the two groups of mounting frames 16, the output ends of the two groups of mounting grooves 17 are respectively vertically connected with the middle parts of the outer ends of the two groups of positioning plates 18, the middle parts of the two groups of mounting grooves are respectively provided with two groups of partition plates, the bottom ends of the two groups of pull rod displacement sensors 19 are respectively connected with the top ends of the, the output ends of the two groups of pull rod displacement sensors 19 are respectively and vertically connected with the upper sides of the outer ends of the two groups of positioning plates 18, the two groups of pull rod displacement sensors 19, the two groups of air cylinders 17 and the two groups of transmission screw rods 13 are respectively kept in a parallel state, and the two groups of positioning plates 18 and the two groups of cutter heads 10 are respectively positioned in the same plane; after the elbow is placed on the material placing frame of the turntable component, at the moment, two groups of cylinders firstly drive two groups of positioning plates to respectively approach to two ports of the elbow, simultaneously, the output ends of two groups of pull rod displacement sensors respectively move synchronously with the two groups of positioning plates, when the two groups of positioning plates respectively push against two ends of the elbow, then the two groups of pull rod displacement sensors respectively measure the displacement strokes when two groups of cutter heads respectively contact with two ports of the elbow, then the output ends of the two groups of cylinders respectively drive two groups of positioning plates and the output ends of two groups of pull rod displacement sensors to reset, then the turntable component rotates the elbow to a processing position, simultaneously, the two groups of pull rod displacement sensors respectively send action signals to two groups of first servo motors, then the two groups of first servo motors respectively drive the two groups of cutter heads to respectively approach to the elbow according to the displacement strokes, after the pipe turning mechanism moves to the determined displacement stroke, the rotating speeds of the two groups of first servo motors are respectively and automatically changed to continuously drive the two groups of cutter heads to slowly move to process the elbow, so that the rotating speeds of the first servo motors are changed through accurately controlling the first servo motors, the difficulty of changing the rotating speeds of the first servo motors when the cutter heads keep the optimal distance from the elbow port is reduced, the use convenience of the pipe turning mechanism is improved, and the practicability is enhanced.

The pipe turning mechanism of the utility model also comprises two groups of fixed rods 20 and two groups of guide rings 21, the two groups of fastening bolts 22, the two groups of fixing rings 23 and the two groups of linear laser lamp positioning assemblies 24 are arranged in a sliding mode, the bottom parts of the rear ends of the two groups of fixing rods 20 are respectively and vertically connected with the inner sides of the front ends of the two groups of mounting frames 16, the two groups of guide rings 21 are respectively and slidably sleeved with the two groups of fixing rods 20, the outer ends of the inner side walls of the two groups of guide rings 21 are respectively provided with two groups of fastening threaded holes in a penetrating mode, the inner ends of the two groups of fastening bolts 22 are respectively inserted into the two groups of fastening threaded holes from the outer sides of the two groups of guide rings 21 in a threaded mode, the inner ends of the two groups of fastening bolts 22 are respectively clung to the outer ends of the two groups of fixing rods 20, the two groups of fixing rings 23 are respectively; after placing the elbow in the blowing inslot of carousel subassembly, through observing two sets of location lines of two sets of word laser lamp locating component at the elbow top, whether the locating position that can effectual judgement elbow accords with the processing condition, therefore improved the machining precision to the practicality has been strengthened.

The utility model discloses a pipe turning mechanism, still include second servo motor 25, driving gear 26, rotating gear 27 and three sets of limit pin 28, the carousel subassembly is provided with carousel board and hydro-cylinder, the middle bottom of frame 1 is provided with the working chamber, the left front side, the right front side and the rear side of the top lateral wall of working chamber are connected with the bottom of three sets of limit pin 28 respectively, the left front side, the right front side and the rear side of bottom of carousel board are provided with three sets of keyway respectively, three sets of keyway slide with three sets of limit pin 28 respectively and clamp, the bottom of hydro-cylinder is connected with the bottom of working chamber, the output of hydro-cylinder is connected with the bottom bearing of rotating gear 27, the top of rotating gear 27 is connected with the bottom of carousel board, second servo motor 25 is provided with the mount, the bottom of mount is connected with the bottom of working chamber, the output of second servo motor 25 is connected with driving gear 26 key-joint, the left end of the driving gear 26 is meshed with the top of the right end of the rotating gear 27; at first the hydro-cylinder passes through the running gear and jacks up the carousel board, it is no longer spacing to the carousel board to make three spacing pin poles of group, then start second servo motor and make the driving gear drive the carousel board at running gear top and rotate 180 degrees, then the hydro-cylinder then drives the carousel board and resets, three spacing pin poles of group insert respectively again to three group's pin inslots spacing to the carousel board simultaneously, the rotation process of carousel subassembly has just been realized this moment, the rotation process of controlling the carousel subassembly through servo motor, compare in simple cylinder control, the regulation and control precision has been improved, thereby the practicality has been strengthened.

The utility model discloses a pipe turning mechanism, when it works, firstly, the staff controls the feeding positioning manipulator assembly to grab the elbow to be processed by operating the control mechanism, then the elbow is put into the discharging groove of the discharging frame of the turntable assembly by the feeding positioning manipulator assembly, whether the placing position of the elbow meets the processing condition can be effectively judged by observing two groups of positioning lines of two groups of linear laser lamp positioning assemblies at the top of the elbow, and the elbow is finely adjusted, at the moment, two groups of cylinders firstly drive two groups of positioning plates to move towards two ports of the elbow respectively, simultaneously, the output ends of two groups of pull rod displacement sensors respectively move synchronously with the two groups of positioning plates, when the two groups of positioning plates respectively push against two ends of the elbow, the two groups of pull rod displacement sensors respectively measure the displacement strokes when two groups of cutter heads respectively contact with the two ports of the elbow, then the output ends of two groups of cylinders respectively drive two groups of positioning plates and the output ends of two groups of pull rod displacement sensors to reset, then a turntable assembly is controlled to enable a turntable to drive an elbow to rotate to a processing part, simultaneously an oil cylinder assembly is fastened to act to tightly press the elbow in a discharging groove of the turntable, then a new group of elbow to be processed is placed in another group discharging groove of the turntable, at the moment, two groups of driving motors of two groups of elbow processing assemblies are respectively started to enable the output ends of two groups of driving motors to respectively drive two groups of cutter heads to rotate through a speed reducer, simultaneously, two groups of pull rod displacement sensors respectively send action signals to two groups of first servo motors, two groups of first servo motors simultaneously act to respectively drive two groups of transmission screw rods to rotate, under the rotation of two groups of transmission screw rods, two groups of fixing assemblies respectively drive two groups of cutter heads to move, at this moment, two sets of pivoted blade discs contact two sets of ports of elbow, at this moment, the displacement speed of two sets of blade discs slows down and begins to process and carry out the turning to the both ends of elbow, after the elbow processing finishes, at this moment, two sets of elbow processing subassemblies reset respectively, carousel subassembly then resets simultaneously and rotates, then control unloading manipulator subassembly is automatic to put into the elbow to the linear guide subassembly on, and under the control of unloading manipulator subassembly's delay control subassembly, the elbow is after falling to the discharge end of linear guide subassembly, the operation of unloading of elbow in order not to influence back elbow is pushed away from to this group of elbow to the transfer cylinder action, the course of working of a set of elbow has just been accomplished this moment.

The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.

In the present invention, "first", "second" and "third" do not represent specific quantities or sequences, but are merely used for distinguishing names.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A pipe turning mechanism comprises a rack (1), a discharging manipulator component (2), a feeding positioning manipulator component (3), a turntable component and two groups of elbow processing components, wherein a mounting hole is formed in the front end of the rack (1) in a penetrating mode, the turntable component is located at the bottom of the mounting hole, a discharging rack (4) is arranged at the top of the turntable component, two groups of discharging tanks are respectively arranged on the front side and the rear side of the top end of the discharging rack (4), the discharging manipulator component (2) and the feeding positioning manipulator component (3) are respectively located in the left upper region and the right upper region of the front end of the rack (1), a linear guide rail component (5) is fixedly arranged on the left side of the support, a conveying cylinder is arranged in the linear guide rail component (5), material grabbing cylinders (6) are respectively arranged at the output ends of the discharging manipulator component (2) and the feeding positioning manipulator component (3), and an operation and control mechanism (7) is arranged at the output end of, a fastening oil cylinder assembly (8) is arranged in the middle of the top of the rack (1), a pressing block (9) is arranged at the bottom end of the fastening oil cylinder assembly (8), two groups of elbow processing assemblies are respectively positioned in the upper left area and the upper right area of the rack (1), each group of elbow processing assembly comprises a cutter head (10), a power mechanism and a displacement mechanism, the displacement mechanism is provided with a first servo motor (11), a limiting slide rail assembly (12) and a transmission screw rod (13), the output end of the first servo motor (11) is rotatably connected with the input end of the transmission screw rod (13), the power mechanism is provided with a driving motor (14) and a fixing assembly, the output end of the driving motor (14) is provided with a speed reducer (15), the output end of the speed reducer (15) is connected with the fixed end of the cutter head (10), the speed reducer (15) is connected with the fixing assembly, the two groups of cutter heads (10) are respectively positioned at the left upper side and the right upper side of the material placing frame (4) at the top of the turntable assembly; the device is characterized by further comprising two groups of mounting frames (16), two groups of cylinders (17), two groups of positioning plates (18) and two groups of pull rod displacement sensors (19), wherein the rear ends of the two groups of mounting frames (16) are respectively connected with the left upper side and the right upper side of the front end of the frame (1), the top ends of the two groups of mounting frames (16) are respectively provided with two groups of mounting grooves, the inner ends of the two groups of mounting grooves are respectively communicated with two groups of extending openings, the bottom ends of the two groups of cylinders (17) are respectively connected with the bottom ends of the two groups of mounting grooves, the output ends of the two groups of cylinders (17) respectively penetrate through the two groups of extending openings in the two groups of mounting grooves and respectively extend to the inner sides of the two groups of mounting frames (16), the output ends of the two groups of cylinders (17) are, the bottom of two sets of pull rod displacement sensor (19) is connected with the top of two sets of baffles respectively, the output of two sets of pull rod displacement sensor (19) passes two sets of mouths that stretch out and stretch out the inboard to two sets of mounting brackets (16) respectively in two sets of mounting grooves respectively, the output of two sets of pull rod displacement sensor (19) is connected with the outer end upside of two sets of locating plates (18) respectively perpendicularly, two sets of pull rod displacement sensor (19), two sets of cylinder (17) and two sets of transmission lead screw (13) keep the state of being parallel respectively, two sets of locating plates (18) are located the coplanar with two sets of blade discs (10) respectively.

2. The pipe turning mechanism according to claim 1, further comprising two sets of fixing rods (20), two sets of guide rings (21), two sets of fastening bolts (22), two sets of fixing rings (23) and two sets of in-line laser lamp positioning components (24), wherein the bottoms of the rear ends of the two sets of fixing rods (20) are respectively and vertically connected with the inner sides of the front ends of the two sets of mounting brackets (16), the two sets of guide rings (21) are respectively slidably sleeved with the two sets of fixing rods (20), the outer ends of the inner side walls of the two sets of guide rings (21) are respectively provided with two sets of fastening threaded holes in a penetrating manner, the inner ends of the two sets of fastening bolts (22) are respectively and threadedly inserted into the two sets of fastening threaded holes from the outer sides of the two sets of guide rings (21), the inner ends of the two sets of fastening bolts (22) are respectively clung to the outer ends of the two sets of fixing rods (20), the two sets of fixing rings (, the rear ends of the two groups of fixing rings (23) are respectively provided with two groups of connecting rods, and the rear ends of the two groups of connecting rods are respectively connected with the front ends of the two groups of guide rings (21).

3. The pipe turning mechanism according to claim 2, further comprising a second servo motor (25), a driving gear (26), a rotating gear (27) and three sets of limit pins (28), wherein the turntable assembly is provided with a turntable plate and an oil cylinder, the middle bottom of the frame (1) is provided with a working chamber, the left front side, the right front side and the rear side of the top outer side wall of the working chamber are respectively connected with the bottom ends of the three sets of limit pins (28), the left front side, the right front side and the rear side of the bottom end of the turntable plate are respectively provided with three sets of pin grooves, the three sets of pin grooves are respectively slidably clamped with the three sets of limit pins (28), the bottom end of the oil cylinder is connected with the bottom end of the working chamber, the output end of the oil cylinder is connected with the bottom end bearing of the rotating gear (27), the top end of the rotating gear (27) is connected with the bottom end of the turntable plate, the second servo motor (25) is provided with a fixing frame, the bottom of mount is connected with the bottom of working chamber, the output and the driving gear (26) key-type connection of second servo motor (25), the left end of driving gear (26) and the right-hand member top meshing of rotating gear (27).