CN105128351B - A kind of multistage temperature control machine-shaping device of PVC O tubing and its processing method - Google Patents

Abstract

A kind of multistage temperature control machine-shaping device of PVC O tubing and its processing method, belong to the process equipment field of PVC O tubing.Device is characterised by：The frame（7）On be transversely provided with the blanking extrusion mechanism being connected and pipe forming mechanism, blanking extrusion mechanism includes cutting agency, rabbling mechanism（4）And extrusion mechanism（9）, cutting agency is arranged on rabbling mechanism（4）It is used as the top of feed end one end, extrusion mechanism（9）It is arranged on rabbling mechanism（4）It is used as the other end of discharge end；Extrusion mechanism（9）Connection pipe body shaping mechanism；Described pipe forming mechanism two ends are respectively equipped with one group of hauling pipe mechanism.It is directly entered in processing method after tube extrusion generation in drawing process.The present invention carries out difficulty larger radial drawing while tubing is tentatively generated, it is ensured that the uniformity of tubing globally expanding so that the tube wall thickness after stretching is uniform, and body is unlikely to deform.

Description

A kind of multistage temperature control machine-shaping device of PVC-O tubing and its processing method

Technical field

A kind of multistage temperature control machine-shaping device of PVC-O tubing and its processing method, belong to the process equipment of PVC-O tubing Field.

Background technology

Biaxially orienting polyvinyl chloride（PVC-O）It is the newest evolutional form of pvc pipe, passes through special orientation processing technology system The tubing made, usually carries out axial tension and radial drawing using the PVC-U tubing that extrusion method is produced, makes in tubing PVC long-chain molecules obtain high intensity, high tenacity, high-impact, antifatigue novel PVC tubing, performance in biaxially regular arrangement It is much better than common PVC-U tubing, researchs and develops PVC-O tubing, raw material resources can be greatlyd save, reduce cost, improves production 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, without 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 progress uniaxial tension orientation, i.e. axial tension in forming process and taken To as long as the speed of the traction of increase tubing and extrusion is than can be achieved this orientation.But this axial tension orientation is to the property of tubing It is skimble-skamble for energy, although because it adds the intensity that tubing is orientated by stretching orientation, reducing tubing Radially（That is ring）Intensity, be extremely harmful for this is for plastic pipe, especially water-feeding pipes, because it can be big The hydraulic pressure burst strength of big reduction 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 added, 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, is easily realized to the axial tension of PVC-O tubing, 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 it is even that the tubing after stretching has a wall unevenness, the problems such as 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：The deficiencies in the prior art are overcome to generate tubing online there is provided one kind While carry out radial drawing, the multistage temperature control machine-shaping device of tube wall thickness is uniform, use intensity is high PVC-O tubing and Its processing method.

The technical solution adopted for the present invention to solve the technical problems is：PVC-O tubing multistage temperature control machine-shaping dress Put, including frame, blanking extrusion mechanism and pipe forming mechanism, the blanking extruder being connected is transversely provided with the frame Structure and pipe forming mechanism, blanking extrusion mechanism include cutting agency, rabbling mechanism and extrusion mechanism, and cutting agency, which is arranged on, to be stirred Mechanism is mixed as the top of feed end one end, rabbling mechanism feed end connection actuating unit, extrusion mechanism is arranged on rabbling mechanism It is used as the other end of discharge end, it is characterised in that：Described rabbling mechanism is included in mixing drum and agitating shaft, mixing drum discharge end Side is fixed with support reclaiming plate, and the connecting extruder structure on the outside of support reclaiming plate, and support reclaiming plate goes out to be sleeved on agitating shaft Expect end and the disk with discharge opening；

Extrusion mechanism includes what suit in feeding cylinder, preliminary formed pipe and preliminary shaping axle, preliminary formed pipe was coaxially disposed Preliminary shaping axle, the outer ring of feeding cylinder cylinder is provided with heater strip, and the preliminary shaping axle is provided with cooling silk, preliminary shaping axle Discharge end stretches out connection pipe body shaping mechanism after preliminary formed pipe, and the charging aperture of pipe forming mechanism and discharging opening two ends are set respectively There is one group of hauling pipe mechanism, hauled out the body for dragging shaping by hauling pipe mechanism.

Described feeding cylinder is conical outlet, and conical outlet is the conically shaped of the trapezoidal setting in section, conically shaped heavy caliber One end as discharge end in the mixing drum described in connection is held, small-caliber end connects preliminary formed pipe.

Blanking extrusion mechanism and pipe forming mechanism are linked in sequence and be integrated, drawing is directly entered after tube extrusion generation In stretching process, blanking, stirring, extrusion generation are accomplished without any letup, and difficulty are then carried out while tubing is tentatively generated larger Radial drawing, it is ensured that the uniformity of tubing globally expanding so that the tube wall thickness after stretching is uniform, and body is unlikely to deform；Pipe The output of material is hauled out by hauling pipe mechanism, efficient can be completed, is saved under whole shaping, one production line of drawing process Intermediate link it is numerous and diverse, simplify technical process, in turn ensure that the quality of tubing.

In the tubing of the first one-step forming of gap walking tentatively between shaping inside pipe wall and preliminary shaping axle, and utilize heater strip Tubing is slowly heated, until shaping, is more beneficial for the uniformity of tube wall thickness.

Described agitating shaft is axially mounted in laterally disposed mixing drum, and heater strip, agitating shaft are surrounded with mixing drum One end, which is stretched out outside mixing drum, connects actuating unit, and the other end is by supporting reclaiming plate to be fixed in mixing drum as the another of discharge end One end.Agitating shaft is worm screw or auger.The uniform stirring of material, the rotation speed of worm screw or auger are realized by worm screw or auger Rate can carry out free adjustment according to the density of different material.

The uniform multiple discharge openings of annular on described support reclaiming plate, discharge opening is set in fan-shaped.

Fairlead is provided with described support reclaiming plate, the fairlead is connected with described discharge opening, preliminary shaping axle Inner hollow and inlet end are provided with the line of the heater strip outside same fairlead, feeding cylinder and the cooling silk on preliminary shaping axle Road is sequentially passed through inside preliminary shaping axle, be connected with external power source after discharge opening, fairlead.

Described pipe forming mechanism includes being drawn into profile shaft and drawing and forming pipe, and drawing and forming inner coaxial tube installs stretching Shaping axle, and be drawn into the bore of profile shaft and drawing and forming pipe and gradually increase in proportion according to the moving direction of shaping pipe, and Drawing and forming pipe two ends are equipped with the straight body of the shaping pipe of one section of connection into or out；It is drawn on profile shaft with shaft diameter Increase is sequentially provided with multistage heating silk and cooling silk.

The bore for being drawn into profile shaft and drawing and forming pipe gradually increases in proportion according to the moving direction of shaping pipe, and Profile shaft is drawn into provided with heater strip and cooling silk, heater strip and cooling silk can be set it is multigroup, realize to tubing slow plus Heat and Slow cooling, the slow stretching to tubing is realized during slow heating, the uniformity of tube wall thickness is fully ensured that, Slow cooling can guarantee that the use intensity of tubing after stretching again.

It is preferred that, the hauling pipe mechanism that pipe forming mechanism two ends are set is respectively used to connect preliminary shaping axle and is drawn into The discharge end of profile shaft, preliminary shaping axle be fixedly connected it is described be drawn into profile shaft, it is described be drawn into profile shaft discharge end and stretch out be drawn into Type pipe, is drawn at the straight body of profile shaft feed end and is provided with the 3rd heater strip, and the middle part body gradually increased is provided with least One group of the 4th heater strip, the straight body of discharge end is provided with the second cooling silk.

Described hauling pipe mechanism includes crawler belt, belt wheel and bearing, and bearing is provided with hollow inner chamber, its inner chamber and installed down It is symmetricly set on preliminary shaping axle or is drawn into two groups of belt wheels of profile shaft both sides, every group of belt wheel is at least provided with two, every group of belt wheel Connected by a crawler belt.

The discharging of tubing and delivering to subsequent processing are realized using hauling pipe mechanism, artificial or other machines is eliminated and goes out The trouble of material, and tube forming each process combining together well, realize the integration of online production.

Described is drawn into profile shaft for hollow body, and with being connected inside preliminary shaping axle.

According to a kind of tube forming technique of the multistage temperature control machine-shaping device of above-mentioned PVC-O tubing, it is characterised in that： Comprise the following steps：

The blanking into rabbling mechanism by cutting agency, drives rabbling mechanism to be stirred material by actuating unit, by The hole extrusion of reclaiming plate is supported, into the feeding cylinder of extrusion molding mechanism；

By the heating of extrusion molding mechanism, cooling, formed just in the gap tentatively between shaping inside pipe wall and preliminary shaping axle The tubing of one-step forming, it is right by the cooling silk set on preliminary shaping axle when tubing runs to preliminary formed pipe discharging port Tubing carries out slow cooling cooling；

Tubing is slowly heated using heater strip, until shaping, is more beneficial for the uniformity of tube wall thickness, extrusion is just The tubing of one-step forming；

The tubing of first one-step forming is hauled out and sent into body drawing and forming mechanism by deposit mechanism, is passed sequentially through and is drawn into Multistage heating silk is slowly heated in type mechanism, reaches the molten condition of stretchable processing, tubing is in body stretch forming press By slow stretching in structure, cooled down, be molded eventually through the cooling the being provided with silk of discharge end；Again pass by heating, cooling Process, and heating, cooling during realize radial drawing；

PVC-O tubing radial drawings are machined, and are hauled out by another group of hauling pipe mechanism.

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

1st, blanking extrusion mechanism and pipe forming mechanism are linked in sequence and be integrated, be directly entered after tube extrusion generation In drawing process, blanking, stirring, extrusion generation are accomplished without any letup, and difficulty are then carried out while tubing is tentatively generated larger Radial drawing, it is ensured that the uniformity of tubing globally expanding so that tube wall thickness after stretching is uniform, and body is unlikely to deform； The output of tubing is hauled out by hauling pipe mechanism, efficient can be completed, is saved under whole shaping, one production line of drawing process Intermediate link it is numerous and diverse, simplify technical process, in turn ensure that the quality of tubing.

2nd, the bore for being drawn into profile shaft and drawing and forming pipe gradually increases in proportion according to the moving direction of shaping pipe, and Be drawn on profile shaft provided with heater strip and cooling silk, heater strip and cooling silk can be set it is multigroup, realize to the slow of tubing Heating and Slow cooling, the slow stretching to tubing is realized during slow heating, the uniform of tube wall thickness is fully ensured that Property, Slow cooling can guarantee that the use intensity of tubing after stretching again.

3rd, preliminary shaping axle and it is drawn into the discharge end of profile shaft and is set with one group of hauling pipe mechanism, uses hauling pipe mechanism to realize pipe The discharging of material and the delivering to subsequent processing, eliminate the trouble of artificial or other machines discharging, and tube forming each Process combining together well, realizes the integration of online production.

Brief description of the drawings

Fig. 1 is the multistage temperature control machine-shaping device axonometric drawing schematic diagram of PVC-O tubing.

Fig. 2 is the multistage temperature control machine-shaping device top view schematic diagram of PVC-O tubing.

Fig. 3 is the multistage temperature control machine-shaping device front view schematic cross-sectional view of PVC-O tubing.

Fig. 4 is blanking extrusion mechanism and actuating unit annexation top view schematic diagram.

Fig. 5 is Fig. 4 B-B schematic cross-sectional views.

Wherein：1st, motor 2, shaft coupling 3, bearing 4, rabbling mechanism 401, mixing drum 402, agitating shaft 403, support Reclaiming plate 5, blanking funnel 6, the first heater strip 7, the cooling of frame 8, first silk 9, extrusion mechanism 901, conical outlet 902nd, preliminary formed pipe 903, preliminary shaping axle 10, pipe forming mechanism 1001, be drawn into profile shaft 1002, drawing and forming pipe 11st, the second heater strip 12, second cooling silk 13, the first hauling pipe mechanism 14, the second hauling pipe mechanism 15, crawler belt 16, belt wheel 17th, bearing 18, the 3rd heater strip 19, the 4th heater strip.

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 multistage temperature control machine-shaping device of PVC-O tubing, including actuating unit, frame 7, blanking The blanking extrusion mechanism being connected and pipe forming mechanism, blanking are transversely provided with extrusion mechanism and pipe forming mechanism, frame 7 Extrusion mechanism includes cutting agency, rabbling mechanism 4 and extrusion mechanism 9, and cutting agency is arranged on rabbling mechanism 4 as feed end one The top at end, the feed end of rabbling mechanism 4 connection actuating unit, extrusion mechanism 9 is arranged on rabbling mechanism 4 as the another of discharge end End；The connection pipe body shaping mechanism of extrusion mechanism 9；Pipe forming mechanism two ends are respectively equipped with one group of hauling pipe mechanism, pass through hauling pipe machine Structure hauls out body.

Cutting agency includes blanking funnel 5, the bottom connection feed end of rabbling mechanism 4 of blanking funnel 5.

Rabbling mechanism 4 includes mixing drum 401 and agitating shaft 402, and agitating shaft 402 is axially mounted to laterally disposed mixing drum In 401, agitating shaft 402 can be worm screw or auger.The first heater strip 6 is surrounded with mixing drum 401, the one end of agitating shaft 402 is stretched out The outer connection actuating unit of mixing drum 401, actuating unit includes motor 1, shaft coupling 2, and the output end of motor 1 is connected by shaft coupling 2 Agitating shaft 402 is connect, the other end is by supporting reclaiming plate 403 to be fixed on the other end in mixing drum 401 as discharge end.Branch is overhanged The uniform multiple discharge openings of annular on flitch 403, discharge opening is set in fan-shaped.Draw as shown in figure 5, being provided with support reclaiming plate 403 String holes, the fairlead is connected with discharge opening, and the preliminary inner hollow of shaping axle 903 and inlet end are provided with same fairlead, The circuit of heater strip and the cooling silk on preliminary shaping axle 903 outside feeding cylinder sequentially passes through inside preliminary shaping axle 903, discharged It is connected after hole, fairlead with external power source.Extrusion mechanism 9 includes feeding cylinder, preliminary formed pipe 902 and preliminary shaping axle 903, tool The feeding cylinder of body is one end as discharge end in conical outlet 901, the heavy caliber end of conical outlet 901 connection mixing drum 401, small Bore end connects the axially mounted preliminary shaping axle 903 of suit in preliminary formed pipe 902, preliminary formed pipe 902；Conical outlet 901 be that the second heater strip 11 is wound with the conically shaped of the trapezoidal setting in section, conically shaped, and preliminary shaping axle 903 is provided with first Silk 8 is cooled down, the discharge end of preliminary shaping axle 903 stretches out the pipe inlet end of the preliminary connection pipe body shaping mechanism of formed pipe 902.

Pipe forming mechanism includes being drawn into profile shaft 1001 and drawing and forming pipe 1002, drawing and forming pipe 1002 coaxially pacifying Dress is drawn into profile shaft 1001, and is drawn into the bore of profile shaft 1001 and drawing and forming pipe 1002 according to the moving direction of shaping pipe Gradually increase in proportion, and the two ends of drawing and forming pipe 1002 are equipped with the straight body of the shaping pipe of one section of connection into or out, The tubing of output is accepted by this two sections straight bodys；As shown in figure 3, being drawn into profile shaft 1001 provided with heater strip and cooling Silk, is drawn at the straight body of the feed end of profile shaft 1001 and is provided with the 3rd heater strip 18, and the middle part body gradually increased is provided with At least one set of 4th heater strip 19, the straight body of discharge end is provided with the second cooling silk 12.

Preliminary shaping axle 903, which is fixedly connected, is drawn into profile shaft 1001, preliminary shaping axle 903 and is drawn into profile shaft 1001 and is Hollow body.It is drawn into the discharge end of profile shaft 1001 and stretches out drawing and forming pipe 1002；The hauling pipe that pipe forming mechanism two ends are set Mechanism, is respectively used to connect preliminary shaping axle 903 and is drawn into the discharge end of profile shaft 1001, specifically, preliminary shaping axle 903 goes out Expect that end connects the first hauling pipe mechanism 13, the discharge end for being drawn into profile shaft 1001 is set with the second hauling pipe mechanism 14.

First hauling pipe mechanism 13 and the second hauling pipe mechanism 14 use same mechanism, including crawler belt 15, belt wheel 16 and branch Seat 17, bearing 17 is provided with to install down in hollow inner chamber, its inner chamber and is symmetricly set on preliminary shaping axle 903 or is drawn into profile shaft Two groups of belt wheels 16 of 1001 both sides, every group of belt wheel 16 is at least provided with two, and every group of belt wheel 16 is connected by a crawler belt 15.

A kind of tube forming technique of the multistage temperature control machine-shaping device of PVC-O tubing, comprises the following steps：

Tube forming material is sent into mixing drum 401 by blanking funnel 5, by cutting agency into rabbling mechanism 4 Blanking；

Drive rabbling mechanism to be stirred material by actuating unit, and promote extrusion molding mechanism；There is provided dynamic by motor 1 Power, is rotated, slow uniform stirring material by the electric stirring axle 402 of shaft coupling 2, and during stirring, passes through stirring The first heater strip 6 for setting tentatively is preheated to material on cylinder 401, by the hole extrusion of support reclaiming plate 403, into being extruded into In the conical outlet 901 of type mechanism；

The tubing heated by extrusion molding mechanism, cooled down and extrude first one-step forming；Added using second on conical outlet 901 Heated filament 11 carries out heating heating to material, the slow heating of the preliminary formative stage of tubing is realized, then in preliminary formed pipe 902 The tubing of the first one-step forming of gap walking between wall and preliminary shaping axle 903, tubing runs to the preliminary discharging of formed pipe 902 port During place, slow cooling cooling is carried out by the first cooling 8 pairs of tubing of silk set on preliminary shaping axle 903；

Tubing is slowly heated using heater strip, until shaping, is more beneficial for the uniformity of tube wall thickness；

The tubing of first one-step forming again passes by heating, the process of cooling, and realization is radially drawn during heating, cooling Stretch；The tubing of first one-step forming is by the first hauling pipe mechanism 13, under the mobile dragging of crawler belt 15, into be drawn into profile shaft 1001 with Drawing and forming pipe 1002, into body drawing and forming mechanism, passes sequentially through the straight body for being drawn into the feed end of profile shaft 1001 The slow heating for the 4th heater strip 19 that place is provided with provided with the 3rd heater strip 18, the middle part body gradually increased, reaching to draw Stretch the molten condition of processing, tubing is slowly drawn with being drawn into the bore that profile shaft 1001 and drawing and forming pipe 1002 gradually increase Stretch, the second cooling silk 12 being provided with eventually through the straight body for being drawn into the discharge end of profile shaft 1001 is cooled down, and is molded；

PVC-O tubing radial drawings are machined, and are hauled out by the crawler belt 15 of the second hauling pipe mechanism 14.

The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is 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 (8)

1. a kind of multistage temperature control machine-shaping device of PVC-O tubing, including frame（7）, blanking extrusion mechanism and pipe forming machine Structure, in the frame（7）On be transversely provided with the blanking extrusion mechanism being connected and pipe forming mechanism, blanking extrusion mechanism includes Cutting agency, rabbling mechanism（4）And extrusion mechanism（9）, cutting agency is arranged on rabbling mechanism（4）It is used as the upper of feed end one end Side, rabbling mechanism（4）Feed end connects actuating unit, extrusion mechanism（9）It is arranged on rabbling mechanism（4）It is used as the another of discharge end End, it is characterised in that：Described rabbling mechanism（4）Including mixing drum（401）And agitating shaft（402）, mixing drum（401）Discharge end Inner side is fixed with support reclaiming plate（403）, and in support reclaiming plate（403）Outside connecting extruder structure（9）, support reclaiming plate （403）To be sleeved on agitating shaft（402）Discharge end and the disk with discharge opening；

Extrusion mechanism（9）Including feeding cylinder, preliminary formed pipe（902）With preliminary shaping axle（903）, preliminary formed pipe（902）It is interior It is set with the preliminary shaping axle being coaxially disposed（903）, the outer ring of feeding cylinder cylinder is provided with heater strip, the preliminary shaping axle（903） Provided with cooling silk, preliminary shaping axle（903）Discharge end stretch out preliminary formed pipe（902）Connection pipe body shaping mechanism, is managed afterwards The charging aperture of body formed mechanism and discharging opening two ends are respectively equipped with one group of hauling pipe mechanism, and the pipe of shaping will be dragged by hauling pipe mechanism Body is hauled out；Described pipe forming mechanism includes being drawn into profile shaft（1001）With drawing and forming pipe（1002）, drawing and forming pipe （1002）Inside it is co-axially mounted and is drawn into profile shaft（1001）, and it is drawn into profile shaft（1001）With drawing and forming pipe（1002）Bore press Gradually increase in proportion according to the moving direction of shaping pipe, and drawing and forming pipe（1002）Two ends are equipped with one section of connection into or out Shaping pipe straight body；It is drawn into profile shaft（1001）On with the increase of shaft diameter be sequentially provided with multistage heating silk and cooling Silk；

The hauling pipe mechanism that described pipe forming mechanism two ends are set, is respectively used to connect preliminary shaping axle（903）Be drawn into Profile shaft（1001）Discharge end, preliminary shaping axle（903）Profile shaft is drawn into described in being fixedly connected（1001）, it is described to be drawn into profile shaft （1001）Discharge end stretches out drawing and forming pipe（1002）, it is drawn into profile shaft（1001）Add at the straight body of feed end provided with the 3rd Heated filament（18）, the middle part body gradually increased is provided with least one set of 4th heater strip（19）, set on the straight body of discharge end There is the second cooling silk（12）.

2. the multistage temperature control machine-shaping device of a kind of PVC-O tubing according to claim 1, it is characterised in that：Described Feeding cylinder is the conically shaped of the trapezoidal setting in section, the described mixing drum of conically shaped heavy caliber end connection（401）It is interior to be used as discharging The one end at end, small-caliber end connects preliminary formed pipe（902）.

3. the multistage temperature control machine-shaping device of a kind of PVC-O tubing according to claim 1, it is characterised in that：Described Agitating shaft（402）It is axially mounted to laterally disposed mixing drum（401）It is interior, mixing drum（401）On be surrounded with heater strip, agitating shaft （402）Mixing drum is stretched out in one end（401）Outer connection actuating unit.

4. the multistage temperature control machine-shaping device of a kind of PVC-O tubing according to claim 1, it is characterised in that：Described Support reclaiming plate（403）The upper uniform multiple discharge openings of annular, discharge opening is set in fan-shaped.

5. the multistage temperature control machine-shaping device of a kind of PVC-O tubing according to claim 4, it is characterised in that：Described Support reclaiming plate（403）Interior to be provided with fairlead, the fairlead is connected with described discharge opening, preliminary shaping axle（903）It is internal Hollow and inlet end is provided with heater strip and preliminary shaping axle outside same fairlead, feeding cylinder（903）On cooling silk Circuit sequentially passes through preliminary shaping axle（903）It is connected after inside, discharge opening, fairlead with external power source.

6. the multistage temperature control machine-shaping device of a kind of PVC-O tubing according to claim 1, it is characterised in that：Described Hauling pipe mechanism includes crawler belt（15）, belt wheel（16）And bearing（17）, bearing（17）Provided with hollow inner chamber, installed in its inner chamber Under be symmetricly set on preliminary shaping axle（903）Or it is drawn into profile shaft（1001）Two groups of belt wheels of both sides（16）, every group of belt wheel（16） At least provided with two, every group of belt wheel（16）Pass through a crawler belt（15）Connection.

7. the multistage temperature control machine-shaping device of a kind of PVC-O tubing according to claim 1, it is characterised in that：Described It is drawn into profile shaft（1001）For hollow body, and with preliminary shaping axle（903）Inside is connected.

8. the processing method that one kind utilizes the multistage temperature control machine-shaping device of any described PVC-O tubing of claim 1 ~ 7, its It is characterised by, comprises the following steps：

The blanking into rabbling mechanism by cutting agency, drives rabbling mechanism to be stirred material, by supporting by actuating unit Reclaiming plate（403）Hole extrusion, into the feeding cylinder of extrusion molding mechanism；

By the heating of extrusion molding mechanism, cooling, in preliminary formed pipe（902）Inwall and preliminary shaping axle（903）Between gap The tubing of just one-step forming is formed, tubing runs to preliminary formed pipe（902）During discharging port, pass through preliminary shaping axle（903） The cooling silk of upper setting carries out slow cooling cooling to tubing；

Tubing is slowly heated using heater strip, until shaping, the tubing of the first one-step forming of extrusion；

The tubing of first one-step forming is hauled out and sent into body drawing and forming mechanism by deposit mechanism, passes sequentially through stretch forming press Multistage heating silk is slowly heated in structure, reaches the molten condition of stretchable processing, tubing is in body drawing and forming mechanism By slow stretching, cooled down, be molded eventually through the cooling the being provided with silk of discharge end；Again pass by heating, the mistake of cooling Journey, and realize radial drawing during heating, cooling；

PVC-O tubing radial drawings are machined, and are hauled out by another group of hauling pipe mechanism.