CN115503225A

CN115503225A - Insulating tube polyethylene outer jacket coiler

Info

Publication number: CN115503225A
Application number: CN202211346991.XA
Authority: CN
Inventors: 李德恒; 潘存业; 王海利; 杨智丽; 于艳藏; 孙义凡; 王伟
Original assignee: Hebei Jy Technology Co ltd
Current assignee: Hebei Jy Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2022-12-23

Abstract

The invention relates to the technical field of winding equipment, in particular to a polyethylene outer protective layer winding machine for a heat-insulating pipe; the automatic cutting device can realize automatic cutting of the polyethylene belt, reduce manual operation amount, improve winding efficiency of the polyethylene outer protective layer of the heat-insulating pipe, and is safer and more reliable; the automatic cutting machine comprises a frame, the carousel of rotatable installation in the frame, rotate for the carousel and provide the first actuating mechanism of power and install the shearing mechanism that is used for the polyethylene area to cut in the frame, the carousel is rotatable to be installed in the frame, the rotatable tape roller of putting of installing on the carousel, shearing mechanism feeds the subassembly and cuts the subassembly including promoting, the subassembly is fed including indulging the actuating mechanism, sideslip actuating mechanism and mounting bracket to promote, indulge and move actuating mechanism fixed mounting in the frame, sideslip actuating mechanism fixed mounting is on indulging and moves actuating mechanism, mounting bracket fixed mounting is on sideslip actuating mechanism, it has two commentaries on classics rollers to rotate to install on the mounting bracket, shearing mechanism is including feeding the seat, second actuating mechanism cuts with cuting.

Description

Insulating tube polyethylene outer jacket coiler

Technical Field

The invention relates to the technical field of winding equipment, in particular to a polyethylene outer protective layer winding machine for a heat-insulating pipe.

Background

As is well known, a heat preservation pipe is a short-term heat preservation pipeline, and is used for conveying liquid, gas and other media, in heat preservation engineering of pipelines such as petroleum, chemical engineering, aerospace, military, central heating, central air conditioning, municipal administration and the like, in order to prolong the service life of the heat preservation pipe, the heat preservation pipe is often required to be subjected to anticorrosion treatment, winding a polyethylene tape is one of common anticorrosion treatment methods, and a heat preservation pipe polyethylene outer protective layer winding machine is equipment for winding the polyethylene tape on the outer wall of the heat preservation pipe; publication (bulletin) No. CN210617288U discloses a semi-automatic winding machine for a pipe protective film. The winding machine comprises a first pipe support, a second pipe support, a winding mechanism support and a winding mechanism; the first pipe support and the second pipe support are arranged along a straight line, the winding mechanism support is arranged between the first pipe support and the second pipe support, and the centers of the longitudinal sections of the first pipe support and the second pipe support are superposed; the winding mechanism is arranged on the winding mechanism bracket and rotates around the outer side of the winding mechanism bracket; a reel for placing the protective film on the winding mechanism; the pipe is supported on the first pipe support and the second pipe support and moves linearly. The first pipe support and the second pipe support are of open structures, so that the length of a pipe is not influenced, the pipe directly runs out of the device from the end part of the second pipe support after winding operation is finished, the pipe does not need to be replaced by stopping, the whole process is mechanically controlled, compared with manual winding, protective films are uniformly arranged, and the working efficiency is obviously improved; in the use discovery, after the insulating tube winding finishes before next insulating tube winding, need cut the polyethylene area with the manual work, this process is artifical excessively close to the winder, easily takes place mechanical injury people's accident, has great potential safety hazard, and manual operation inefficiency influences the winding efficiency of insulating tube outer wall polyethylene outer jacket simultaneously, has certain use limitation.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the heat preservation pipe polyethylene outer protective layer winding machine which can realize automatic cutting of a polyethylene belt, reduce the manual operation amount, improve the heat preservation pipe polyethylene outer protective layer winding efficiency, and is safer and more reliable.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the polyethylene belt cutting machine comprises a rack, a rotary table, a first driving mechanism and a cutting mechanism, wherein the rotary table is rotatably arranged on the rack, the first driving mechanism provides power for the rotation of the rotary table, and the cutting mechanism is arranged on the rack and used for cutting a polyethylene belt; the first driving mechanism preferably selects a motor and a transmission belt, the motor is fixedly arranged on the rack, and the output end of the motor is in transmission connection with the turntable through the transmission belt; the first driving mechanism can also adopt a motor and a gear assembly, and the output end of the motor is in transmission connection with the turntable through the gear assembly; the longitudinal movement driving mechanism preferably adopts a driving sliding table, and can adopt a hydraulic or pneumatic sliding table or a mechanical sliding table; the transverse moving driving mechanism is preferably a sliding frame, a transmission belt and a driving motor, the sliding frame is slidably arranged on the longitudinal moving driving mechanism, the driving motor is fixedly arranged on the transmission belt, and the output end of the driving motor is in transmission connection with the sliding frame through the transmission belt; the transverse moving driving mechanism can also adopt a driving sliding table; the second driving mechanism preferably drives a cylinder, and the second driving mechanism can also adopt a driving device with the equivalent linear driving effect, such as a linear motor.

Preferably, the feeding seat is provided with clamping pincers which are arranged corresponding to the cutting scissors; further, the cutting scissors are preferably pneumatic scissors, and the clamping pincers are preferably pneumatic pincers; more specifically, the pneumatic clamp comprises scissors, a driving connecting piece and an air cylinder, the scissors are arranged on the feeding seat, the output end of the air cylinder is in transmission connection with the scissors through the driving connecting piece, and the air cylinder provides power for opening and closing the scissors; the pneumatic scissors comprise a clamping part and a finger cylinder, and the clamping part is in transmission connection with the output end of the finger cylinder; the finger cylinder is the power that the centre gripping of clamping portion provided.

Preferably, the heating device further comprises a ring frame and a plurality of heaters uniformly distributed on the inner wall of the ring frame, the ring frame is fixedly arranged on the rack, and the central axis of the ring frame is superposed with the central axis of the turntable; the belt releasing roller is close to the inner wall of the ring frame.

Preferably, a preheating mechanism for heating the outer wall of the heat-insulating pipe is installed on the rack.

Preferably, a cooling mechanism for cooling the polyethylene tape wound on the outer wall of the heat-insulating pipe is arranged on the rack; further, the preheating mechanism and the cooling mechanism both comprise an air blower, a blast hood, a heat exchanger and a circulating pipe arranged in the heat exchanger, the heat exchanger is fixedly arranged in the blast hood, the output end of the air blower is communicated with the output end and the input end of the blast hood, and the blast hood is provided with an arc part matched with the outer wall of the heat-insulating pipe; the heat exchanger comprises an inner support frame and a plurality of radiating fins uniformly distributed on the periphery of the inner support frame, and the plurality of radiating fins are enclosed to form a cylindrical shape.

Preferably, the rack is provided with an adjustable support mechanism for supporting the heat preservation pipe, the adjustable support mechanism comprises a lifting frame, a third driving mechanism and two support rollers which are rotatably arranged on the lifting frame, the third driving mechanism is fixedly arranged on the rack, the lifting frame is arranged at the output end of the third driving mechanism, and the two support rollers are arranged in a V shape; the third driving mechanism is preferably a driving cylinder which is fixedly arranged on the frame, the lifting frame is arranged at the output end of the driving cylinder, and the third driving mechanism can also adopt driving equipment with driving effect, such as a worm and gear elevator or a linear motor.

Preferably, the articulated relaxation degree guiding mechanism that installs of roller department of putting the area on the carousel, relaxation degree guiding mechanism includes rotating turret, torsional spring and compression roller, the rotating turret articulates and installs in carousel department, the rotatable installation of compression roller is on the rotating turret, the compression roller passes through the torsional spring and is articulated with the rotating turret.

Preferably, the mounting frame is rotatably provided with the flattening roller at a position far away from the two rotating rollers.

(III) advantageous effects

Compared with the prior art, the invention provides a winding machine for a polyethylene outer protective layer of a heat preservation pipe, which has the following beneficial effects: this insulating tube polyethylene outer jacket coiler, pass the insulating tube from the carousel middle part, pull the insulating tube through outside traction equipment, will put polyethylene area and insulating tube outer wall connection on the area roller, a actuating mechanism drives the carousel and rotates, the polyethylene area twines on the insulating tube, after the winding of insulating tube outer wall polyethylene sheath finishes, the automation of realizing the polyethylene area through the shearing mechanism is cut off, reduce the manual operation volume, improve insulating tube polyethylene outer jacket winding efficiency, do not need operating personnel to close on the carousel operation for a long time, and is safe and reliable more.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic cross-sectional view taken at B-B of FIG. 2 in accordance with the present invention;

FIG. 5 is a schematic structural view of an embodiment of the polyethylene tape wound on the insulating pipe of the present invention;

FIG. 6 is an enlarged partial view of FIG. 1 at A in accordance with the present invention;

in the drawings, the reference numbers: 1. a frame; 2. a turntable; 3. a first drive mechanism; 4. a belt releasing roller; 5. a longitudinal movement driving mechanism; 6. a traverse driving mechanism; 7. a mounting frame; 8. rotating the roller; 9. a feeding seat; 10. a second drive mechanism; 11. cutting off; 12. a holding clamp; 13. a heater; 14. a preheating mechanism; 15. a cooling mechanism; 16. a lifting frame; 17. a third drive mechanism; 18. a support roll; 19. a rotating frame; 20. a torsion spring; 21. a compression roller; 22. and (4) flattening the roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the winding machine for the polyethylene outer sheath of the thermal insulation pipe comprises a frame 1, a turntable 2 rotatably mounted on the frame 1, a first driving mechanism 3 for providing power for the rotation of the turntable 2, and a cutting mechanism mounted on the frame 1 and used for cutting a polyethylene tape, wherein the turntable 2 is rotatably mounted on the frame 1, a tape placing roller 4 is rotatably mounted on the turntable 2, the cutting mechanism comprises a pushing and feeding assembly and a cutting assembly, the pushing and feeding assembly comprises a longitudinal movement driving mechanism 5, a transverse movement driving mechanism 6 and a mounting frame 7, the longitudinal movement driving mechanism 5 is fixedly mounted on the frame 1, the transverse movement driving mechanism 6 is fixedly mounted on the longitudinal movement driving mechanism 5, the mounting frame 7 is fixedly mounted on the transverse movement driving mechanism 6, two rotating rollers 8 are rotatably mounted on the mounting frame 7, the cutting mechanism comprises a feeding seat 9, a second driving mechanism 10 and a cutting shear 11, the second driving mechanism 10 is fixedly mounted on the frame 1, the feeding seat 9 is fixedly mounted on an output end of the second driving mechanism 10, and the cutting 11 is mounted on the feeding seat 9; the first driving mechanism 3 preferably selects a motor and a transmission belt, the motor is fixedly arranged on the frame 1, and the output end of the motor is in transmission connection with the turntable 2 through the transmission belt; the first driving mechanism 3 can also adopt a motor and a gear assembly, and the output end of the motor is in transmission connection with the turntable 2 through the gear assembly; the longitudinal movement driving mechanism 5 preferably adopts a driving sliding table, and can adopt a hydraulic or pneumatic sliding table or a mechanical sliding table; the transverse moving driving mechanism 6 preferably comprises a sliding frame, a transmission belt and a driving motor, the sliding frame is slidably arranged on the longitudinal moving driving mechanism 5, the driving motor is fixedly arranged on the transmission belt, and the output end of the driving motor is in transmission connection with the sliding frame through the transmission belt; the transverse moving driving mechanism 6 can also adopt a driving sliding table; the second driving mechanism 10 is preferably a driving cylinder, and the second driving mechanism 10 can also adopt a driving device with the equivalent linear driving effect, such as a linear motor and the like; the longitudinal movement driving mechanism 5 can drive the mounting rack 7 to move back and forth along the rack 1, and the transverse movement driving mechanism 6 can drive the mounting rack 7 to move left and right; the polyethylene strip is pushed to a shearing assembly through two rotating rollers 8 on a mounting rack 7; when carrying out polyethylene area winding operation, promote to feed the subassembly and be located 1 front side of frame, the rear side that the shearing module is located carousel 2 avoids promoting to feed subassembly and shearing module and drives the rotation of putting tape roll 4 department polyethylene area and cause the interference to carousel 2.

Specifically, the feeding seat 9 is provided with a clamping pliers 12 which is arranged corresponding to the cutting scissors 11; further, the cutoff shears 11 are preferably pneumatic shears, and the holding clamp 12 is preferably pneumatic clamp; more specifically, the pneumatic pliers comprise scissors, a driving connecting piece and a cylinder, the scissors are arranged on the feeding seat 9, the output end of the cylinder is in transmission connection with the scissors through the driving connecting piece, and the cylinder provides power for opening and closing the scissors; the pneumatic scissors comprise a clamping part and a finger cylinder, and the clamping part is in transmission connection with the output end of the finger cylinder; the finger cylinder provides power for clamping of the clamping part; before the operation is cut to the polyethylene area, centre gripping pincers 12 carry out the centre gripping to the polyethylene area spacing, avoid the polyethylene area loose or whereabouts after cutting, when carrying out the outside polyethylene area winding operation of insulating tube next, can be convenient for twine the one end in the insulating tube outer wall in the polyethylene area, it is long when shortening the polyethylene area and being connected of insulating tube to improve the winding efficiency in insulating tube outer wall polyethylene area.

The heating device comprises a rack, a rotary table 2, a ring frame and a plurality of heaters 13, wherein the heaters 13 are uniformly distributed on the inner wall of the ring frame; the belt releasing roller 4 is close to the inner wall of the ring frame; further, the heater 13 can adopt the heating equipment that has the heating effect such as electric heating pipe, electric heating wire or electric heating lamp, be connected heater 13 with external power supply, carousel 2 drives and puts the tape roll 4 department polyethylene area rotation in-process, the polyethylene area rotates around the ring frame, the polyethylene area absorbs the heat that heater 13 radiated, the temperature of polyethylene area risees, its plasticity can be showing with the extension performance and promote, in the winding process to the polyethylene area to the insulating tube outer wall, can improve the laminating degree of polyethylene area at the insulating tube outer wall, in order to improve the winding effect of polyethylene area at the insulating tube outer wall department.

Specifically, a preheating mechanism 14 for heating the outer wall of the heat-insulating pipe is arranged on the frame 1; the outer wall of the heat-insulating pipe can be preheated through the preheating mechanism 14, the problem that the extension performance of a polyethylene belt is influenced due to too large temperature difference between the polyethylene belt and the outer wall of the heat-insulating pipe is avoided, and the polyethylene belt is tightly attached to the outer wall of the heat-insulating pipe.

Specifically, a cooling mechanism 15 for cooling a polyethylene belt wound on the outer wall of the heat-insulating pipe is arranged on the frame 1; further, the preheating mechanism 14 and the cooling mechanism 15 both comprise an air blower, a blowing cover, a heat exchanger and a circulating pipe arranged in the heat exchanger, the heat exchanger is fixedly arranged in the blowing cover, the output end of the air blower is communicated with the output end and the input end of the blowing cover, and the blowing cover is provided with an arc-shaped part matched with the outer wall of the heat-insulating pipe; the heat exchanger comprises an inner support frame and a plurality of radiating fins uniformly distributed on the periphery of the inner support frame, and the plurality of radiating fins are enclosed to form a cylindrical shape; the circulating pipe on the preheating mechanism 14 is communicated with an external heat source, the heat exchanger is heated by the external heat source, the air blower blows air to the heat exchanger, the temperature of the air rises after the air absorbs heat, and the hot air heats the outer wall of the heat-insulating pipe passing through the heat-insulating pipe to preheat the outer wall of the heat-insulating pipe; the circulating pipe on the cooling mechanism 15 is communicated with an external refrigerant, the air blower blows air to the heat exchanger, the refrigerant absorbs part of heat in the air, the air temperature is reduced, cold air is blown out to the outer wall of the heat preservation pipe wound with the polyethylene external layer, the polyethylene belt is cooled, and after cooling, the polyethylene belt can be more tightly coated on the outer wall of the heat preservation pipe under the effect of shrinkage, so that the winding quality of the polyethylene belt on the outer wall of the heat preservation pipe is further improved.

Specifically, an adjustable supporting mechanism for supporting the heat preservation pipe is installed on the rack 1, the adjustable supporting mechanism comprises a lifting frame 16, a third driving mechanism 17 and two supporting rollers 18 which are rotatably installed on the lifting frame 16, the third driving mechanism 17 is fixedly installed on the rack 1, the lifting frame 16 is installed at the output end of the third driving mechanism 17, and the two supporting rollers 18 are arranged in a V shape; the third driving mechanism 17 is preferably a driving cylinder which is fixedly arranged on the frame 1, the lifting frame 16 is arranged at the output end of the driving cylinder, and the third driving mechanism 17 can also adopt a driving device with a driving effect, such as a worm gear lifter or a linear motor; the heat preservation pipe is placed between the two supporting rollers 18, the height of the lifting frame 16 is adjusted by adjusting the length of the output end of the third driving mechanism 17, the central axis of the heat preservation pipe coincides with the central axis of the turntable 2, the winding requirement of the polyethylene belt of the heat preservation pipe with multiple diameters is met, the deviation between the central axis of the heat preservation pipe and the central axis of the turntable 2 is avoided, and the winding compactness of the polyethylene belt at the outer wall of the heat preservation pipe is ensured to be consistent.

Specifically, a relaxation degree adjusting mechanism is hinged to a belt releasing roller 4 on the rotary table 2 and comprises a rotary frame 19, a torsion spring 20 and a compression roller 21, the rotary frame 19 is hinged to the rotary table 2, the compression roller 21 is rotatably mounted on the rotary frame 19, and the compression roller 21 is hinged to the rotary frame 19 through the torsion spring 20; the polyethylene belt bypasses the compression roller 21, and under the action of the torsion spring 20, the compression roller 21 applies elastic pressure to the polyethylene belt, so that the polyethylene belt is in a relaxation state in the winding operation process of the outer wall of the heat preservation pipe, and the winding quality of the polyethylene belt is further ensured.

Specifically, a flattening roller 22 is rotatably arranged on the mounting frame 7 away from the two rotating rollers 8; after the polyethylene belt is wound, the longitudinal movement driving mechanism 5 and the transverse movement driving mechanism 6 are adjusted, the flattening roller 22 on the mounting rack 7 is pressed on the polyethylene belt wound on the outer wall of the heat preservation pipe, the polyethylene belt is flattened, and wrinkles at the polyethylene belt are processed.

When the heat-insulating pipe is used, the height of the supporting roller 18 at the position of the adjustable supporting mechanism is adjusted according to the diameter of the heat-insulating pipe, the heat-insulating pipe is placed at the position of the supporting roller 18, the heat-insulating pipe is pulled by an external traction mechanism to move, one end of a polyethylene belt is connected with the outer wall of the heat-insulating pipe, the first driving mechanism 3 drives the rotary table 2 to rotate, the plasticity of the polyethylene belt is improved under the action of the heater 13, meanwhile, the outer wall of the heat-insulating pipe is preheated by the preheating mechanism 14, the polyethylene belt is tightly attached to the outer wall of the heat-insulating pipe, meanwhile, the polyethylene belt is flattened by the flattening roller 22 on the mounting frame 7 (in an initial state, the transverse moving driving mechanism 6 is positioned at the front part of the rack 1, and the flattening roller 22 is tightly contacted with the outer wall of the heat-insulating pipe), and then, the polyethylene belt at the outer wall of the heat-insulating pipe is cooled by the cooling mechanism 15; after the winding processing of the polyethylene outer protective layer of the heat preservation pipe is finished, the longitudinal moving driving mechanism 5 drives the mounting frame 7 to be close to the polyethylene belt until the rotating roller 8 is parallel to the polyethylene belt, then the transverse moving driving mechanism 6 drives the mounting frame 7 to move downwards, the rotating roller 8 pushes the polyethylene belt to be close to the shearing mechanism, then the second driving mechanism 10 drives the feeding seat 9 to move forwards until the polyethylene belt enters between the clamping pincers 12 and the shearing scissors 11, the clamping pincers 12 clamp the polyethylene belt, the shearing scissors 11 shear the polyethylene belt, and the next heat preservation pipe is subjected to the winding processing of the polyethylene belt according to the principle.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "over 8230" \8230on "," over 82308230; "over 8230;" and "over 8230; \8230; over" in the present disclosure should be interpreted in the broadest manner such that "over 8230;" over 8230 ";" not only means "directly over something", but also includes the meaning of "over something" with intervening features or layers therebetween, and "over 8230;" over 8230 ";" or "over 8230, and" over "not only includes the meaning of" over "or" over "but also may include the meaning of" over "or" over "with no intervening features or layers therebetween (i.e., directly over something).

Furthermore, spatially relative terms, such as "under," "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A thermal insulation pipe polyethylene outer protective layer winding machine is characterized by comprising a rack (1), a rotary table (2) rotatably mounted on the rack (1), a first driving mechanism (3) for providing power for the rotation of the rotary table (2) and a cutting mechanism mounted on the rack (1) and used for cutting a polyethylene belt, wherein the rotary table (2) is rotatably mounted on the rack (1), and a belt releasing roller (4) is rotatably mounted on the rotary table (2);

the shearing mechanism comprises a pushing and feeding assembly and a shearing assembly, the pushing and feeding assembly comprises a longitudinal movement driving mechanism (5), a transverse movement driving mechanism (6) and an installation frame (7), the longitudinal movement driving mechanism (5) is fixedly installed on the rack (1), the transverse movement driving mechanism (6) is fixedly installed on the longitudinal movement driving mechanism (5), the installation frame (7) is fixedly installed on the transverse movement driving mechanism (6), and two rotating rollers (8) are rotatably installed on the installation frame (7);

the shearing mechanism comprises a feeding seat (9), a second driving mechanism (10) and a shearing device (11), the second driving mechanism (10) is fixedly installed on the rack (1), the feeding seat (9) is fixedly installed at the output end of the second driving mechanism (10), and the shearing device (11) is installed on the feeding seat (9).

2. The machine for winding the polyethylene outer sheath of the heat-preservation pipe according to claim 1, wherein the feeding seat (9) is provided with a clamping clamp (12) which is arranged corresponding to the cutting scissors (11).

3. The winding machine for the polyethylene outer protective layer of the heat preservation pipe according to claim 2, further comprising a ring frame and a plurality of heaters (13) uniformly distributed on the inner wall of the ring frame, wherein the ring frame is fixedly installed on the rack (1), and the central axis of the ring frame is overlapped with the central axis of the turntable (2).

4. The machine for winding the polyethylene outer protective layer of the heat preservation pipe according to claim 3, wherein a preheating mechanism (14) for heating the outer wall of the heat preservation pipe is installed on the machine frame (1).

5. The machine for winding the polyethylene outer protective layer of the heat preservation pipe according to claim 4, characterized in that a cooling mechanism (15) for cooling the polyethylene tape wound on the outer wall of the heat preservation pipe is installed on the machine frame (1).

6. The insulating tube polyethylene outer sheath coiler of claim 5, characterized in that, install the adjustable supporting mechanism that is used for the insulating tube to carry out the support in frame (1), adjustable supporting mechanism includes crane (16), third actuating mechanism (17) and two support rollers (18) of rotatable installation on crane (16), third actuating mechanism (17) fixed mounting is in frame (1), the output in third actuating mechanism (17) is installed in crane (16), and two support rollers (18) are the V type and arrange.

7. The winding machine for the polyethylene outer protective layer of the heat preservation pipe as claimed in claim 6 is characterized in that a relaxation adjusting mechanism is hinged to a tape releasing roller (4) on the turntable (2), the relaxation adjusting mechanism comprises a rotating frame (19), a torsion spring (20) and a compression roller (21), the rotating frame (19) is hinged to the turntable (2), the compression roller (21) is rotatably mounted on the rotating frame (19), and the compression roller (21) is hinged to the rotating frame (19) through the torsion spring (20).

8. The winding machine for the polyethylene outer protective layer of the heat preservation pipe as claimed in claim 7 is characterized in that a flattening roller (22) is rotatably mounted on the mounting frame (7) far away from the two rotating rollers (8).