CN105014942B - A kind of PVC O tubing radial directions magnetic senses stretching device and its processing method - Google Patents

Abstract

A kind of PVC O tubing radial directions magnetic senses stretching device and its processing method, belongs to PVC O tubular object extruding apparatus fields.Device characteristic is：Processing cylinder（6）, by electric heater unit to PVC O bodys（13）Heated；Spreading mechanism（5）, including rotary opening mechanism and magnetic attraction mechanism, rotary opening mechanism is axially mounted to process cylinder（6）Interior, magnetic attraction mechanism is fixedly mounted on processing cylinder（6）Outer ring, with rotary opening mechanism outer ring electromagnetism adhesive can occur and control moving radially for rotary opening mechanism；Hold-down mechanism（6）, the inner passes through processing cylinder（4）Near spreading mechanism（5）, to PVC O bodys（13）Radial positioning.The present invention using the irony movement pattern that is engaged with magnetic attraction mechanism of bracer, while the radial drawing of tubing is realized in the rectilinear movement for moving bracer can synchronous rotary, significantly improve the uniformity and use intensity of the tubing after drawing and forming.

Description

A kind of PVC-O tubing radial direction magnetic senses stretching device and its processing method

Technical field

A kind of PVC-O tubing radial direction magnetic senses stretching device and its processing method, belongs to PVC-O tubular object extrudings equipment neck Domain.

Background technology

Biaxially orienting polyvinyl chloride（PVC-O）It is the newest evolutional form of pvc pipe, by special orientation processing technology system The tubing made, the PVC-U tubing for usually being produced using extrusion method carries out axial tension and radial drawing, in making tubing PVC long-chain molecules obtain high intensity, high tenacity, high-impact, antifatigue novel PVC tubing, performance in biaxially regular arrangement Common PVC-U tubing is much better than, PVC-O tubing is researched and developed, raw material resources can be greatlyd save, reduces cost is improved and produced Moral character energy, with obvious economic benefit and social benefit.

PVC belongs to the unformed plastics of non-crystalline type, because the chlorine in molecule has larger polarity, therefore in rigidity, Glass transition temperature is higher, does not have clear and definite fusing point.The tubing of this performance, compared with the polyolefin pipe of other crystal types, compared with It is suitable for carrying out biaxial stretch-formed orientation.PVC is easy to carry out uniaxial tension orientation, i.e. axial tension to take in forming process To as long as increasing the speed of tubing traction and extrusion than being capable of achieving this orientation.But this axial tension orientation is to the property of tubing It is skimble-skamble for energy, although because it increased the intensity that tubing is orientated by stretching orientation, reducing tubing Radially the intensity of (i.e. ring), is extremely harmful for this is for plastic pipe, especially water-feeding pipes, because it can be big The big hydraulic pressure burst strength for reducing tubing, this be also tubing quality standard in will the longitudinal welds of regulation tubing must be small In the reason for equal to 5%.Preferably stretching orientation should be two-way, i.e., biaxial stretch-formed orientation, by biaxial stretch-formed orientation, both The axial strength of tubing is increased, while also increasing the radial direction of tubing（That is ring）Intensity.That is, by biaxial stretch-formed Orientation, improves the overall performance of tubing.Greatly increase in pipe material intensity, on the original hydraulic pressure explosion rheobase plinth of tubing, Raw material is saved by the method for reducing wall thickness, the cost of product is reduced.

Prior art, the axial tension to PVC-O tubing is easily to realize, but radially（That is ring）Stretching There is certain technical problem in realization, existing radial dilatation device is to the expansion of tubing due to the defect of self structure, it is impossible to Ensure the uniformity of tubing globally expanding so that the tubing after stretching has the problems such as wall unevenness is even, and body is easily deformed, sternly The use intensity of tubing is have impact on again.

The content of the invention

The technical problems to be solved by the invention are：Overcome the deficiencies in the prior art, there is provided one kind ensures that body expansion is equal The on-deformable PVC-O tubing radial direction magnetic sensing stretching device of even, stretching.

The technical solution adopted for the present invention to solve the technical problems is：PVC-O tubing radial directions magnetic sensing stretching dress Put, it is characterised in that including：Base；

Processing cylinder, inwall is provided with electric heater unit, is transversely mounted on base, by electric heater unit to PVC-O bodys Heated；

Spreading mechanism, including rotary opening mechanism and magnetic attraction mechanism, rotary opening mechanism are axially mounted to process cylinder Interior, rotary opening mechanism stretches out one end processing cylinder outside and is connected with revolving power mechanism, is driven by revolving power mechanism real Now the radial rotary to PVC-O bodys is stretched, and magnetic attraction mechanism is fixedly mounted on the outer ring of processing cylinder, can be with rotary opening machine There is electromagnetism adhesive in structure outer ring；

Hold-down mechanism, is arranged on processing cylinder, and the inner is close to spreading mechanism through processing cylinder, radially fixed to PVC-O bodys Position；

In PVC-O bodys insertion processing cylinder, it is sleeved between spreading mechanism and hold-down mechanism.

PVC-O bodys are sleeved between spreading mechanism and hold-down mechanism, power is provided by spreading mechanism, stretched out PVC-O bodys, realize the radial drawing of body, meanwhile, the hold-down mechanism set by outside is engaged with spreading mechanism, will PVC-O bodys are relatively fixed, and prevent it in the random movement of radial direction, force it uniformly to be sent out according to the draw direction of spreading mechanism Raw stretching, expansion, are effectively guaranteed the overall uniformity of body radial drawing, it is ensured that the use intensity of tubing.

Described spreading mechanism include rotary opening mechanism and magnetic attraction mechanism, rotary opening mechanism include central shaft and Axially mounted multigroup irony rotation bracer group on center shaft, every group of irony rotation bracer group includes multiple radial equipartitions in The irony rotation bracer of heart axle outer ring, is fixed with multiple projections that bracer is rotated for installing irony, irony rotation on central shaft Turn the groove that bracer inner side was provided with and convexed to form activity grafting；

Magnetic attraction mechanism, including strong electromagnet and electromagnet coil group, are set with electromagnet coil outside strong electromagnet Group, and the outer ring of processing cylinder is fixedly mounted on by coil tube, magnetic attraction mechanism is provided with multigroup, each group of installation site with The position of irony rotation bracer group is engaged, and radial ringed uniform multigroup in central shaft.

Irony rotates bracer under spring tension effect near central shaft, when central axis, irony rotation bracer Under the action of the centrifugal force, away from central shaft, irony rotation bracer arcuate surface plays radial drawing effect to PVC；Meanwhile, magnetic force is inhaled Close mechanism and be mainly booster action, when centrifugal force is insufficient to allow irony to rotate bracer outward movment, lead to electromagnet coil group Imported into magnetic attraction in processing cylinder by electricity, strong electromagnet, and magnetic force produces suction, strong electromagnet and electricity to irony rotation bracer Magnet coil group is provided with multigroup along processing cylinder circumference, and multigroup coil winding direction is identical, multigroup the direction of the winding current is identical, multigroup Coil produces magnetic force direction identical.

The side that processing cylinder end is stretched out in described central shaft one end is provided with revolving power mechanism, and revolving power mechanism includes Motor and shaft coupling, motor are fixed on base one end by motor base, and motor output end connects center shaft extension by shaft coupling Go out to process the end of cylinder.

Spreading mechanism is transformed into the straight line for rotating bracer using the structure of multiple meshed transmission gears by gear It is mobile, and then realize the radial drawing of tubing, it is ensured that the expansion precision of body stretching, further improve drawing pipe Uniformity.

Meshing gear sets multigroup, and corresponding rotation bracer is also provided with the multigroup of respective numbers, and multiple rotates setting for bracer Put and increase the application point that body is expanded as far as possible, meanwhile, rotation bracer can also rotate with central shaft, that is, strut Mechanism is that expansion tubing is rotating by the rotation of itself, more effectively ensure that the uniformity of body expansion.

Described irony rotation bracer is set for inner hollow, and it is smooth arc that outer face is contacted with PVC-O body abutments Shape face.

Preferably, hold-down mechanism includes spring, adhesive armature and adhesive pressing plate, and adhesive pressing plate is compressed on outside PVC-O bodys Surface, adhesive armature outside is provided with the capping of outer sealed tube and the top easy disassembly of outer sealed tube, adhesive armature bottom insertion processing cylinder It is interior and the end install adhesive pressing plate；Be set with pull-in winding between adhesive armature top and outer sealed tube, bottom and outer sealed tube it Between pocketed springs, outer sealed tube middle inside is provided with a circle and pacifies spring-loaded boss, and spring one end is fixed in outer sealed tube, the other end Adhesive pressing plate is fixedly connected after being sleeved on adhesive armature.

Adhesive pressing plate is used cooperatively with rotation bracer, by body control in fixed Working position, effectively prevents body Arbitrarily move radially, it is to avoid the influence that is caused to drawing pipe uniformity of mismachining tolerance that this kind of moving belt comes.

Described electric heater unit is the electrical heating wire on the inwall of processing cylinder.

One end that described central shaft stretches out processing cylinder is fixed on the end for processing cylinder by bearing, and the other end is provided with to be prevented The magnetic levitation adhesive mechanism of central shaft ends sag, magnetic levitation adhesive mechanism includes being arranged on the adhesive electricity on the outside of processing cylinder Magnet and the suspension end cap for being fixed on center shaft end.

A kind of processing method that stretching device is sensed using above-mentioned PVC-O tubing radial direction magnetic, it is characterised in that：Including with Lower step：

A, hold-down mechanism are powered, the contact departed from spreading mechanism of floating, and reserve the gap of tubular object extruding, will be to be processed PVC-O bodys are axially pushed from processing cylinder one end, are sleeved on spreading mechanism outer ring, and hold-down mechanism is powered off, then by hold-down mechanism pressure Firmly tubing prevents it from rotating；

B, the PVC-O bodys heating by electric heater unit to processing in cylinder, until body is in the soft of stretchable processing Change state, continues heated at constant temperature；

C, startup revolving power mechanism, rotary opening mechanism is under the drive of revolving power mechanism in PVC-O body inward turnings Turn, while being powered to magnetic attraction mechanism, electromagnetism adhesive occurs by magnetic attraction mechanism and rotary opening mechanism outer ring, and control Rotary opening mechanism processed moves radially, and realizes the slow radial drawing during rotation of PVC-O bodys；

D, radial drawing to preliminary dimension, close heating, are rotated further, until PVC-O body cooling and shapings, process Into after the taking-up from processing cylinder after body cooling.

Compared with prior art, the present invention is had an advantageous effect in that：

1st, body stretching and body stopping means are provided simultaneously with, PVC-O bodys is sleeved on spreading mechanism and hold-down mechanism Between, hold-down mechanism provides power as stopping means by spreading mechanism, stretches out PVC-O bodys, realizes the footpath of body To stretching, meanwhile, the hold-down mechanism set by outside is engaged with spreading mechanism, and PVC-O bodys are relatively fixed, and prevents it In the random movement of radial direction, force it uniformly to be stretched according to the draw direction of spreading mechanism, expanded, be effectively guaranteed The overall uniformity of body radial drawing, it is ensured that the use intensity of tubing.

2nd, spreading mechanism is used for realizing the radial drawing of tubing, and spreading mechanism rotates bracer and possesses powerful using irony Electromagnetic attraction the pattern that is engaged of magnetic attraction mechanism, by inhaling dynamic rotation bracer, the straight line occurred by rotation bracer is moved The dynamic radial drawing for realizing tubing, meanwhile, rotation bracer follows central shaft that synchronous rotary occurs again, and this is just effectively guaranteed pipe The expansion precision of body stretching, further improves the uniformity of drawing pipe.

3rd, rotary opening mechanism and magnetic attraction mechanism are correspondingly arranged multigroup respectively, and corresponding rotation bracer is also provided with accordingly Quantity it is multigroup, multiple rotation bracers settings the application point that body expand is increased as far as possible, meanwhile, rotate bracer may be used also Rotated with central shaft, i.e., spreading mechanism is that expansion tubing is rotating by the rotation of itself, more effectively ensured The uniformity of body expansion.

4th, adhesive pressing plate is used cooperatively with rotation bracer, by body control in fixed Working position, effectively prevents pipe The random of body is moved radially, it is to avoid the influence that the mismachining tolerance that this kind of moving belt comes is caused to drawing pipe uniformity.

Brief description of the drawings

Fig. 1 is that PVC-O tubing radial directions magnetic senses stretching device front view schematic diagram.

Fig. 2 is processing cylinder inner structure front view schematic cross-sectional view.

Fig. 3 is spreading mechanism and hold-down mechanism installation relation side view schematic diagram.

Fig. 4 is that PVC-O tubing radial directions magnetic senses stretching device axonometric drawing schematic diagram.

Fig. 5 is hold-down mechanism sectional view schematic diagram.

Wherein, 1, base 2, afterbody hold-down support 3, adjustment cushion block 4, motor base 5, motor 6, processing cylinder 7, connection Axle device 8, bearing 9, anterior fixed plate 10, hold-down mechanism 1001, outer sealed tube 1002, capping 1003, pull-in winding 1004th, spring 1005, adhesive armature 1006, adhesive pressing plate 11, spreading mechanism 1101, the rotation support of central shaft 1102, irony Block 1103, strong electromagnet 1104, electromagnet coil group 1105, raised 1106, coil tube 12, suspension end cap 13, PVC-O bodys 14, adhesive electromagnet.

Specific embodiment

Fig. 1 ~ 5 are highly preferred embodiment of the present invention, and 1 ~ 5 the present invention will be further described below in conjunction with the accompanying drawings.

Referring to the drawings 1 ~ 5：A kind of PVC-O tubing radial direction magnetic senses stretching device, including base 1, processing cylinder 6, electricity add The hold-down mechanism 10 of thermal, the spreading mechanism 11 of radial drawing PVC-O bodys 13 and compacting PVC-O bodys 13, in processing cylinder 6 Wall is provided with electric heater unit, and electric heater unit is the electrical heating wire on the inwall of processing cylinder 6, can be distributed on processing cylinder 6 Inwall on, it is ensured that uniform heating effect.Processing cylinder 6 is transversely mounted on base 1, and base 1 can be as shown in Figure 1, is divided into Left and right two parts, processing cylinder 6 is arranged between left and right base 1, and processing cylinder 6 two ends can be respectively equipped with removably end cap, or Processing cylinder 6 is one side closed, and opposite side installs an end cap, processing cylinder 6 side connection revolving power mechanism, by electric heater unit PVC-O bodys are heated, spreading mechanism 11 is axially mounted in processing cylinder 6, and hold-down mechanism 10 is arranged on processing cylinder 6, The inner is through processing cylinder 6 near spreading mechanism 11, and PVC-O bodys 13 are sleeved between spreading mechanism 11 and hold-down mechanism 10, interior End is close to spreading mechanism 11 through processing cylinder 6, to the radial positioning of PVC-O bodys 13.In the insertion processing cylinder 6 of PVC-O bodys 13, set Between spreading mechanism 11 and hold-down mechanism 10.

Spreading mechanism 11 includes rotary opening mechanism and magnetic attraction mechanism, and rotary opening mechanism includes the He of central shaft 1101 The multigroup irony rotation bracer group on central shaft 1101 is axially mounted to, every group of irony rotation bracer group includes multiple radial equipartitions Irony in the outer ring of central shaft 1101 rotates bracer 1102, and central shaft 1101 is provided with multiple for installing irony rotation bracer Raised the 1105 of 1102, the inner side of irony rotation bracer 1102 is provided with the groove with raised 1105 formation activity grafting；Magnetic attraction Mechanism, including strong electromagnet 1103 and electromagnet coil group 1104, the outer suit electromagnet coil group of strong electromagnet 1103 1104, and the outer ring of processing cylinder 6 is fixedly mounted on by coil tube 1106, magnetic attraction mechanism is provided with multigroup, each group of peace Holding position is engaged with the position of irony rotation bracer group.Irony rotates bracer 1102 for inner hollow is set, with PVC-O bodys 13 laminating contact outer faces are arcwall face.Irony rotation bracer 1102 is centrosymmetric and is provided with multiple, and the present embodiment is preferably provided with Three, each irony rotates the curved setting in outer ring of bracer 1102.

The side that processing cylinder 6 end is stretched out in the one end of central shaft 1101 is provided with revolving power mechanism, and revolving power mechanism includes Motor 5 and shaft coupling 7, motor 5 are fixed on the one end of base 1 by motor base 4, during the output end of motor 5 is connected by shaft coupling 7 Heart axle 1101 stretches out the end of processing cylinder 6.

Irony rotates bracer 1102 under spring tension effect near central shaft 1101, when central shaft 1101 is rotated, iron Under the action of the centrifugal force, away from central shaft 1101, the irony rotation arcuate surface of bracer 1102 plays footpath to matter rotation bracer 1102 to PVC To stretching action；Meanwhile, magnetic attraction mechanism is mainly booster action, when centrifugal force is insufficient to allow irony rotation bracer 1102 past During outer motion, electromagnet coil group 1104 is set to be powered, imported into magnetic attraction in processing cylinder 6 by strong electromagnet 1103, magnetic force pair Irony rotation bracer 1102 produces suction, and strong electromagnet 1103 and electromagnet coil group 1104 are provided with many along the processing circumference of cylinder 6 Group, multigroup coil winding direction is identical, multigroup the direction of the winding current is identical, multigroup coil produces magnetic force direction identical.

Hold-down mechanism 10 includes spring 1004, adhesive armature 1005 and adhesive pressing plate 1006, and adhesive pressing plate 1006 is compressed on The outside of PVC-O bodys 13, the outside of adhesive armature 1005 is provided with the capping of outer sealed tube 1001 and the top easy disassembly of outer sealed tube 1001 1002, pull-in winding 1003 is set between the top of adhesive armature 1005 and outer sealed tube 1001, covered between bottom and outer sealed tube 1001 Shock mount 1004, the middle inside of outer sealed tube 1001 is provided with the boss that a circle installs spring 1004；Insert the bottom of adhesive armature 1005 Adhesive pressing plate 1006 is installed in processing cylinder 6 and in the end, adhesive pressing plate 1006 is set with irony rotation bracer 1102 with radian.

One end that central shaft 1101 stretches out processing cylinder 6 is fixed on the end for processing cylinder 6 by bearing 8, and the other end is provided with anti- The only magnetic levitation adhesive mechanism of the ends sag of central shaft 1101, magnetic levitation adhesive mechanism includes being arranged on the outside of processing cylinder 6 Adhesive electromagnet 14 and be fixed on the suspension end cap 12 of the end of central shaft 1101.

The processing method that stretching device is sensed using PVC-O tubing radial directions magnetic, is comprised the following steps：

A, hold-down mechanism 10 are powered, and float and depart from spreading mechanism 11, are powered by pull-in winding 1003, and adhesive is held in the mouth Iron 1005 and adhesive pressing plate 1006 are drawn onto inside electric heater unit and facilitate pvc pipe to enter, and reserve the gap of tubular object extruding, will be to be added The PVC-O bodys 13 of work are axially pushed from processing cylinder 6 one end, and be sleeved on irony rotation bracer 1102 and adhesive pressing plate 1006 it Between, fixed completion is installed and is sleeved on the outer ring of spreading mechanism 11, then pushing down tubing by hold-down mechanism 10 prevents it from rotating；PVC- O tubing is powered off into rear hold-down mechanism 10, is only worked when material is added, and after material is put into, spring 1004 can withstand on adhesive pressure On plate 1006, it is compressed PVC-O bodys 13, prevent it from rotating；

B, by process be provided as on the inwall of cylinder 6 electrical heating wire of electric heater unit to processing cylinder 6 in PVC-O manage Body 13 is heated, until body is in the soft state of stretchable processing, continues heated at constant temperature；

C, startup revolving power mechanism, rotary opening mechanism is under the drive of revolving power mechanism in PVC-O bodys 13 , while being powered to magnetic attraction mechanism, there is electromagnetism adhesive by magnetic attraction mechanism and rotary opening mechanism outer ring in rotation, and Control rotary opening mechanism moves radially, and realizes the slow radial drawing during rotation of PVC-O bodys 13；

Specifically, start central shaft 1101 by revolving power mechanism rotating, central shaft 1101 drives and is arranged on its outer ring Irony rotation the synchronous axial system of bracer 1102, meanwhile, to magnetic attraction, mechanism powers, electromagnet coil group 1104 it is electric after, profit The dynamic irony being arranged in processing cylinder 6 is inhaled with the powerful suction of strong electromagnet 1103 and rotate bracer 1102, due to irony rotation The inner side activity of bracer 1102 is plugged on the outer ring of central shaft 1101, therefore, in the outside rectilinear movement of irony rotation bracer 1102 again Slow uniform radial drawing PVC-O tubing in the rotary course of central shaft 1101 is followed simultaneously, thus can ensure that PVC-O is managed The uniformity of material entirety outward radial stretching, at the same time, the outer ring of PVC-O tubing can also be compressed by hold-down mechanism 10, be led to Cross adhesive pressing plate 1006 and rotate the mating reaction of bracer 1102 with irony, PVC-O bodys 13 are clamped, adhesive pressing plate 1006 can be in bullet It is radially slight mobile in the presence of spring 1004 and adhesive armature 1005, the radial drawing of PVC-O bodys 13 is met apart from needs, together When PVC-O bodys 13 can be controlled within the specific limits, to prevent PVC-O bodys 13 from unnecessary slip influence tubing occurring again Stretching uniformity, after the rotation radial drawing body of spreading mechanism 11, realizes the radial drawing of PVC-O bodys 13；

D, radial drawing to preliminary dimension, close heating, are rotated further, until the cooling and shaping of PVC-O bodys 13, processes Into after the taking-up from processing cylinder 6 after body cooling.PVC-O bodys 13 to be processed are axially pushed from processing cylinder 6 one end, set Mounted in the outside of spreading mechanism 11.

The above, is only presently preferred embodiments of the present invention, is not the limitation for making other forms to the present invention, is appointed What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc. Effect embodiment.But it is every without departing from technical solution of the present invention content, according to technical spirit of the invention to above example institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.

Claims (6)

1. a kind of PVC-O tubing radial direction magnetic senses stretching device, it is characterised in that including：Base（1）；

Processing cylinder（6）, inwall is provided with electric heater unit, is transversely mounted on base（1）On, PVC-O is managed by electric heater unit Body（13）Heated；

Spreading mechanism（11）, including rotary opening mechanism and magnetic attraction mechanism, rotary opening mechanism is axially mounted to process cylinder （6）Interior, processing cylinder stretches out in one end in rotary opening mechanism（6）Outside is simultaneously connected with revolving power mechanism, by revolving power mechanism Drive and realize to PVC-O bodys（13）Radial rotary stretching, magnetic attraction mechanism is fixedly mounted on processing cylinder（6）Outer ring, Electromagnetism adhesive can occur with rotary opening mechanism outer ring；

Hold-down mechanism（10）, it is arranged on processing cylinder（6）On, the inner passes through processing cylinder（6）Near spreading mechanism（11）, to PVC-O Body（13）Radial positioning；

PVC-O bodys（13）Insertion processing cylinder（6）It is interior, it is sleeved on spreading mechanism（11）And hold-down mechanism（10）Between；

The rotary opening mechanism includes central shaft（1101）Be axially mounted to central shaft（1101）On multigroup irony rotation Bracer group, every group of irony rotation bracer group includes multiple radial equipartitions in central shaft（1101）The irony rotation bracer of outer ring （1102）, central shaft（1101）On be fixed with it is multiple for installing irony rotation bracer（1102）Projection（1105）, irony Rotation bracer（1102）Inner side is provided with and projection（1105）The groove of formation activity grafting；

Magnetic attraction mechanism, including strong electromagnet（1103）With electromagnet coil group（1104）, strong electromagnet（1103）Outward Suit electromagnet coil group（1104）, and by coil tube（1106）It is fixedly mounted on processing cylinder（6）Outer ring, magnetic attraction machine Structure is along central shaft（1101）Outer ring is provided with multigroup, and in central shaft（1101）It is radial ringed uniform multigroup；

Hold-down mechanism（10）Including spring（1004）, adhesive armature（1005）With adhesive pressing plate（1006）, adhesive pressing plate（1006） It is compressed on PVC-O bodys（13）Outer surface, adhesive armature（1005）Outside is provided with outer sealed tube（1001）With outer sealed tube（1001）Top The capping of portion's easy disassembly（1002）, adhesive armature（1005）Bottom insertion processing cylinder（6）It is interior and in the adhesive armature（1005） Bottom is installed by adhesive pressing plate（1006）；Adhesive armature（1005）Top and outer sealed tube（1001）Between be set with pull-in winding （1003）, bottom and outer sealed tube（1001）Between pocketed springs（1004）, outer sealed tube（1001）Middle inside is provided with circle installation Spring（1004）Boss, spring（1004）One end is fixed on outer sealed tube（1001）On, the other end is sleeved on adhesive armature （1005）Adhesive pressing plate is fixedly connected after upper（1006）.

2. a kind of PVC-O tubing radial direction magnetic according to claim 1 senses stretching device, it is characterised in that：Described Central shaft（1101）Processing cylinder is stretched out in one end（6）The side of end is provided with revolving power mechanism, and revolving power mechanism includes motor （5）And shaft coupling（7）, motor（5）By motor base（4）It is fixed on base（1）One end, motor（5）Output end passes through shaft coupling Device（7）Connection central shaft（1101）Stretch out processing cylinder（6）End.

3. a kind of PVC-O tubing radial direction magnetic according to claim 2 senses stretching device, it is characterised in that：Irony is revolved Turn bracer（1102）For inner hollow is set, with PVC-O bodys（13）Laminating contact outer face is smooth arcwall face.

4. a kind of PVC-O tubing radial direction magnetic according to claim 1 senses stretching device, it is characterised in that：Described Electric heater unit is installed in processing cylinder（6）Inwall on electrical heating wire.

5. a kind of PVC-O tubing radial direction magnetic according to claim 2 senses stretching device, it is characterised in that：Described Central shaft（1101）Stretch out processing cylinder（6）One end pass through bearing（8）It is fixed on processing cylinder（6）End, the other end is provided with anti- Only central shaft（1101）The magnetic levitation adhesive mechanism of ends sag, magnetic levitation adhesive mechanism includes being arranged on processing cylinder（6） The adhesive electromagnet in outside（14）Be fixed on central shaft（1101）The suspension end cap of end（12）.

6. the processing method that a kind of PVC-O tubing radial directions magnetic using described in any one of claim 1 ~ 5 senses stretching device, It is characterised in that it includes following steps：

A, hold-down mechanism（10）It is powered, floats and depart from and spreading mechanism（11）Contact, reserve the gap of tubular object extruding, will be to be added The PVC-O bodys of work（13）From processing cylinder（6）One end axially pushes, and is sleeved on spreading mechanism（11）Outer ring, hold-down mechanism（10） Power-off, then by hold-down mechanism（10）Pushing down tubing prevents it from rotating；

B, by electric heater unit to processing cylinder（6）Interior PVC-O bodys（13）Heating, until body is in stretchable processing Soft state, and continue heated at constant temperature；

C, startup revolving power mechanism, rotary opening mechanism is under the drive of revolving power mechanism in PVC-O bodys（13）Inward turning Turn, while being powered to magnetic attraction mechanism, electromagnetism adhesive occurs by magnetic attraction mechanism and rotary opening mechanism outer ring, and control Rotary opening mechanism processed moves radially, and realizes PVC-O bodys（13）The slow radial drawing during rotation；

D, radial drawing to preliminary dimension, close heating, are rotated further, until PVC-O bodys（13）Cooling and shaping, processes Into from processing cylinder after body is cooled down（6）Middle taking-up.