CN101954745A - Forming machine for built-in rib-adding plastic pipes - Google Patents
Forming machine for built-in rib-adding plastic pipes Download PDFInfo
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- CN101954745A CN101954745A CN201010028024XA CN201010028024A CN101954745A CN 101954745 A CN101954745 A CN 101954745A CN 201010028024X A CN201010028024X A CN 201010028024XA CN 201010028024 A CN201010028024 A CN 201010028024A CN 101954745 A CN101954745 A CN 101954745A
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Abstract
Plastic pipes has the advantages of light weight, corrosion resistance, convenient installation, long service life and low cost, and are widely applied to the fields of municipal construction, agricultural irrigation, construction projects and petrochemical engineering. In order to improve the strength of plastic pipes and reduce the cost thereof, people have deeply researched for the subjects such as compound design of plastic pipes, pipe wall structure and reinforcement of adding ribs and have obtained many results, but these results cannot be satisfactory for people. The built-in rib-adding plastic pipe produced by the invention has all the advantages of general plastic pipes, besides, the steel wire net is clamped therein because the plastic belts with high elasticity is extruded from the flat plate head in forming, and the core rod is spirally wound and extruded through the shift net shaft and the pressure shift shaft. Therefore, the built-in rib-adding plastic pipe has high integral strength, low production cost, many specifications for pipe diameter and wall thickness, no environment pollution, and long service life of over 50 years.
Description
Technical field the present invention relates to a kind of embedded reinforced plastic pipe forming machine.
Background technology is along with the develop rapidly of petro chemical industry, and the oil deep process technology is gradually improved, the variation of plastic products kind, and output increases rapidly, makes it progressively to develop into a kind of new engineering material.Plastic tube is compared with traditional piping material, has significant advantages such as in light weight, corrosion-resistant, that resistance to water-flow is little, simple installation is quick, cost is lower, is subjected to the favor of pipeline engineering circle.For this reason, broad co-operation is carried out in plastic tube manufacturer of many developed countries and pipeline engineering circle, drop into a large amount of human and material resources and financial resources and carried out comprehensive research, aspects such as raw material synthetic technology, pipe part manufacturing technology, design theory and construction technology all are developed and perfect, and accumulated rich experience, make plastic tube in pipeline engineering, occupy considerable position.Plastic conduit is broadly divided into by plastic material: (1). hard polyethylene chloride tube (UPVC) (2). and chlorinated polyvinyl chloride pipe (CPVC) (3). polyethylene pipe (PE) (4). crosslinked polyethylene pipe (PE-X) (5). three type PA tubes (PP-R) (6). Polybutylene Pipe (PB) or the like.
(1). hard polyethylene chloride tube (UPVC): the UPVC pipe is domestic and international the most widely used plastic conduit, have higher shock resistance and chemical-resistance, it can be according to the difference of instructions for use, in process, add different additives, it is had satisfy different physics and the chemical properties that require.
(2). chlorinated polyvinyl chloride pipe (CPVC): the CPVC pipe is to get a kind of hear resistance plastic tube preferably by superchlorinated polyvinyl chloride resin processing, has better heat-resisting, ageing-resistant, resistance to chemical corrosion, and is external many as hot-water line, sewer pipe and sewage pipes.
(3). polyethylene pipe (PE): the PE pipe is divided into high density polyethylene pipe (HDPE), medium density polyethylene pipe (MDPE), low density polyethylene pipe (LDPE) by its density difference.The HDPE pipe has higher strength and stiffness; The MDPE pipe also has good flexibility and degeneration-resistant sex change energy except the compressive resistance that the HDPE pipe is arranged; The flexibility of LDPE pipe, percentage elongation, impact resistance are better, and especially chemical-resistant stability and anti-high-frequency insulation are functional.
(4). crosslinked polyethylene pipe (PE-X): PE-X changes into tridimensional network by chemical method or physical method with the plane chain structure of polyethylene one's share of expenses for a joint undertaking, make it have good physicochemical property, chemical crosslinking divides and to be divided into two kinds of one-step method and two step methods again: one-step method is to add catalyst (silane, peroxide), antioxidant in the polyethylene raw material, carries out crosslinked in the extruder extrusion; Two step method is to produce crosslinked polyethylene A, B material earlier, extrudes crosslinked polyethylene pipe then.The physical crosslinking method normally with electron ray or cobalt 60-radiation gamma polyethylene pipe, excites the sub polyethylene subchain to change, and produces cross-linking reaction, produces crosslinked polyethylene pipe.
(5). three type PA tube (PP-R): PP-R are third generation modified polypropenes, promptly adopt the gas-phase copolymerization method to make PE evenly polymerization randomly in the PP strand, make it have good shock resistance, heat resistance and degeneration-resistant sex change energy.
(6). Polybutylene Pipe (PB): the PB pipe has unique degeneration-resistant sex change energy, can bear high-temperature load for a long time and indeformable, and chemical stability can be used safely between-20 ℃～95 ℃.
Abroad, just PVC-U (UPVC) goods are used for building since the fifties in last century.The U.S. is used for running water pipe, the colliery accounts for 40.4% of gross pressure pipeline with pipe, field irrigation with pipe; The UPVC pipeline that is used for rainwater, sewage, ventilation accounts for 17.3%; The pipeline that electrician's penetration pipe is used accounts for 14.68%; The pipeline that municipal works are used accounts for 22.93%; Other purposes account for 5.24%.Western European countries plastic conduit distribution field: force pipe 68%, non-pressure pipe 17%, pipe fitting 5%, other 10%.The consumption per head of polyolefin pipe in 2005, U.S. 8.3kg, Japanese 4.27kg, West Europe 4.18kg, Canadian 4.07kg.External plastic tube description is complete, and tubing and pipe fitting matching are better, process equipment automaticity height, and online detection instrument is perfect, effectively raises production efficient and yield rate, and its quality concept is far longer than the price notion.
China is from the beginning of the eighties in last century, and systematic research is used plastic tube in municipal works and architectural engineering.Over nearly 30 years, plastic tube is greatly developed in engineering is used, and has successively developed polyvinyl chloride pipe (PVC), RPM (RPM), polyethylene pipe (PE), PAP (PAP), crosslinked polyethylene pipe (PE-X), PA tube (PP-R), chlorinated polyvinyl chloride pipe (CPVC), engineering plastics pipe plastic tubes such as (ABS).According to State Statistics Bureau's in October, 2009 statistics, China's plastic products in 2009 have reached 3,587 ten thousand tons, and plastic pipe accounts for 2,110,000 tons, has become leading products in the plastic industry.
Summary of the invention purpose of the present invention just provides a kind of embedded reinforced plastic pipe, identical at medium, throughput rate is identical, pressure is identical, under the execution conditions phase equal conditions, with common polyolefin pipe relatively, intensity improves 2～3 times, cost reduces by 1/3, and service life is more than 50 years.
Improve plastic tube intensity, following approach has reduced cost:
(1). suitably increase wall thickness.Under same equal pressure, equal throughput rate condition, transport gas adopts steel pipe and adopts the plastic conduit expense relatively.The pipeline that nominal diameter DN150mm is following, if thickness of steel pipe is 5mm, the wall thickness of plastic tube should be 15mm.Total cost (comprising fee of material and installation fee) plastic tube is more cheap slightly than steel pipe.After nominal diameter (DN) was greater than 150mm, plastic tube was more expensive than steel pipe, so DN150mm is an equalization point.
(2). improve plastic formula.The primary raw material of producing plastic tube has polyethylene (PE), polypropylene (PP) etc., and adding assistant is all wanted in these raw material the insides, and as levelling agent, reinforcing agent, plasticizer, fire retardant, age resister, opacifier or the like, whole work is called the prescription design.If want to improve some mechanical strength of plastics, also can try every possible means, but produce little effect from prescription.
(3). change structural pipe wall.Common general plastic tube is a solid tube wall at present, all is smooth inside and outside the tube wall, and tube wall inside does not have other fillers, do not have rib shape cavity.2 lines by the center of circle on the inside pipe wall circumference claim internal diameter, and terms such as middle footpath, external diameter are arranged successively.This solid wall pipe is after extruding with circle mould head, drawn, sizing, cooling forming.
Changing structural pipe wall at present following several method is arranged: 1.. bellows is that level and smooth plastic tube periphery is become after the corrugated, is equivalent to ribbing, can improve the rigidity of plastic tube.2.. reinforcement bellows is to have added a steel wire that spiral twines in bellows tube wall the inside, and there is sale in common various household supplies shop.3.. the hollow tube wall, vertically cut hollow tube wall plastic tube, what see is the hollow section of some circular apertures, and advantage is that technology is simple, and shortcoming is that the inside and outside wall of pipe is coarse.Also have that a kind of what see is the hollow section in some squares hole, advantage is the inside pipe wall smoother, and shortcoming is a complex process.4.. the expanded metal lath tube wall, the first step is made the steel plate webmaster with the steel plate web plate, promptly is the expanded metal lath size blanking on demand of buying back from steel mill is rolled into tube, with electric welding the joint butt welding is connected and makes the steel plate webmaster.Second step by plastic extruder and circle mould head, squeezed into the steel plate webmaster in plastics and makes it to become plastic tube inside and outside the steel plate webmaster, the speed of production of this kind method is slow, cost is high.5.. the braided steel wire tube wall is in the front of circle mould head, and planet braided steel wire frame is installed.The center overlaps with circle mould head; load onto the steel wire coil of revolution; the circular motion of steel wire coil synthesizes screw with the rectilinear motion of the elastomeric state plastic tube that circle mould head is extruded; each steel wire coil energy rotation unwrapping wire is to guarantee continuous production; some steel wires are made into tubulose just as net like this; after entering the round mould head of plastic extruder, the inside and outside plastics that all fill up elastomeric state at steel wire have just formed the steel wire reinforced plastic pipe.The reinforced plastic pipe scientific and technological content of Sheng Chaning is higher in this way, effect is better.But the shortcoming of this method is just overlap joint, not braiding between the every steel wire.Have only warp as cloth, do not have parallel, so bulk strength is not high, and this method can only the production bassoon, can not produce the following tubule of DN200mm.
The embedded reinforced plastic pipe that the present invention produces, be to use screw extruder, with modified PE particle plastics heating and melting, extrude the plastic strap of elastomeric state by dull and stereotyped head, be wound on the plug of required specification, use and dial the net axle and make it make axial straight line to move (rectilinear motion) while twine (circular motion), circular motion and rectilinear motion synthesize screw, the PE band of elastomeric state just has been rolled into pipe, regulates pitch and then can regulate wall thickness (number of plies of winding is many, and wall thickness is with regard to corresponding increase).The centre of which floor plastic strap (for example totally 6 layers be wound into the 3rd layer after), be entangled to steel wire net-belt from other direction, equally under the acting in conjunction of plug and group net axle, steel wire net-belt synthesizes screw, the pitch of steel wire net-belt also can be regulated, the plastic strap of back covers on the steel wire net-belt, and steel wire is embedded in the middle of the plastic tube wall with regard to heat after compressing, and forms embedded reinforced plastic pipe.The added muscle material of the present invention is the steel wire of selling on the market, is to form by warp and parallel braiding.The vertical and horizontal of steel wire all have very high tensile property, and the aperture of gauge of wire, net can be selected arbitrarily.
Embedded reinforced plastic pipe good integral strength, particularly ring stiffness and axial tensile strength index that the present invention produces improve greatly.Caliber can be regulated on a large scale, and the caliber from DN30mm to DN1200mm can both be produced.The thickness of tube wall is unrestricted substantially, can both produce from δ=1.6mm to δ=20mm, is the many pipes of the big materials of wall thickness, and speed of production slows down some and gets final product.First time of the present invention reduced investment, the reinforced plastic pipe production of various calibers, various wall thickness only needs a dull and stereotyped head, changes a spot of fund of caliber only use and does calibration sleeve (price of calibration sleeve be circle mould head 1/20).Waste of raw materials is few in the production process, the yield rate height.
The present invention improves the intensity of plastic tube, and the cost that reduces plastic tube is based on that following theory and experiment draw.Calculate different (the steel pipe wall thickness calculates from about) with steel stress analysis and pipeline wall thickness, bury in the ground plastic tube design national extensive use ring stiffness notions such as ISO, Britain, Finland, ring stiffness S
R, Kpa:
S
R＝EI/Dm
3 (1)
In the formula: the elastic modelling quantity of E-tubing, Kpa;
The moment of inertia of I--unit length tube wall, for solid wall pipe,
I＝e
3/12
E--solid wall pipe wall thickness, m
Dm--manages average diameter, m.
Following formula is written as S
R=E (e
3/ 12)/Dm
3(2)
From formula (2) as can be seen, caliber is identical, the pipe that wall thickness equates, and the big more pipe of tubing elastic modelling quantity (E), ring stiffness is big more.The present invention's (tube wall is attenuate suitably) in plastic tube wall embeds the winding steel wire net, and the elastic modelling quantity of steel is 580 times of plastics, has significantly increased the elastic modelling quantity of tube wall, learns that through flattening experiment intensity improves 2～3 times.
It can also be seen that caliber identical (Dm), ring stiffness (S from formula (2)
R) require the same pipe, the big pipe of tubing elastic modelling quantity (E), wall thickness just can be done thinlyyer.Wall thickness reduction, PE material consumption reduces, and this is that cost-per-meter of the present invention reduces by 1/3 reason.
Because winding steel wire net of the present invention is that PE material heat under elastomeric state is embedded in the plastic tube wall, is different from other reinforcement methods.The reinforced plastic pipe that certain factory produces is reported in CCTV news hookup on August 26 in 2009, and supply falls short of demand; the technology of the reinforced plastic pipe that this factory produces is; extrude interior pipe with circle mould head earlier; after pipe cools off in treating; twine individual wire (spiral winding) at inner tube outer surface, also will add vertical steel wire specific (special) requirements person.Outside twining the steel wire that gets on, twine adhesive tape again, with not loose, the not corrosion of protection steel wire.This kind method is difficult to assurance and does not intake from the adhesive tape lap-joint of twining, so can not get the service life of whole pipe guaranteeing.The present invention is a winding steel wire net under the hot embedding state, and plastics and steel wire are seamless overlap joint, and steam can't enter tube wall at all, according to the measuring and calculating of life-span of modified PE, so the service life that can guarantee pipe is more than 50 years.
Description of drawings is described in further detail the present invention below in conjunction with accompanying drawing.
Accompanying drawing 1 is embedded reinforced plastic pipe make-up machine front view.It transfers to axle 6, plastic board head 7, steel wire 8 etc. to form by frame 1, plug gear 2, reducer gear 3, group net axle 4, plug 5, press polish.
Frame 1 is formed by the quarter bend assembly welding, and plug gear 2 is fixed on the supporting base of frame 1 centre. Plug 5 is enclosed within on the plug gear 2, and plug gear 2 rotates plug 5 and also can rotate thereupon. Dialling net axle 4 can rotate under electric reducer drives. Press polish outgoing shaft 6 upwards can compress plug 5 under the effect of hydraulic cylinder, can leave downwards, and press polish outgoing shaft 6 can be rotated under electric reductor drives. Plastic board head 7 is extruded the adjustable elastomeric state PE band of bandwidth. Steel wire 8 has suitable fabric width, and rolling is enclosed within on the little axle, can unclamp, lengthen with the rotation of little axle.
The specific embodiment checks whether each parts installation of embedded reinforced plastic pipe make-up machine is firm, and whether move flexible, and whether compressed air, cooling water, power supply are connected, and checks the back preparation start that finishes.PE material from extruder is extruded through dull and stereotyped head 7 moulding, becomes the elastomeric state PE band of required width, desired thickness.The reductor of starter receiver 3, the power of this reductor are threephase asynchronous, with frequency control gear 3 are transferred to suitable rotating speed, drive plug gear 2 and rotate, and the plug 5 that is enclosed within on the plug gear 2 also rotates thereupon.Continuously the PE band rides on the plug 5, simultaneously steel wire net-belt is ridden on the plug, and the fabric width of steel wire is selected as required, and steel wire is positioned at the centre of PE strip material, and the fabric width of PE strip material can cover steel wire fully.At this moment, the PE material covers steel wire and make circular motion on plug 5, with hand (band asbestos gloves) promote PE steel wire circle (to go out tube side to), after group net axle 4 belows, starting cylinder makes and dials net axle 4 and be pressed onto on the PE steel wire circle and (promptly be pressed onto on the plug 5), allow simultaneously and dial net axle 4 rotations (being the inhour rotation in the accompanying drawing 1), make PE steel wire circle on plug 5, make axial linear movement, with the synthetic screw of the circular motion of plug 5.Continuous feed, continual screw just can be produced the embedded reinforced plastic pipe that spiral twines.Twine the vestige of lap-joint and make PE material and steel wire closelyr chimeric in order to eliminate spiral, transfer to axle 6 so set up press polish, the operation that axle 6 is transferred in press polish is netted spools 4 identically with dialling, but direction of rotation is opposite, so that the demoulding (depoling rod).
After the embedded reinforced plastic pipe of producing left make-up machine, the water cooling and shaping after producing certain-length, cut off with toothless saw immediately, and then packing is dispatched from the factory.To apply for a patent separately about the transmission of embedded reinforced plastic pipe on production line, sizing, cut-out etc.
Claims (6)
1. embedded reinforced plastic pipe make-up machine is characterized in that: it by frame, plug gear, reducer gear, dial net axle, plug, press polish and extract axle, plastic board head, steel wire etc. and form.
2. embedded reinforced plastic pipe make-up machine according to claim 1, it is characterized in that: frame is formed by the shaped steel assembly welding, and the plug gear is supported in the middle of the frame, and reducer gear drives the plug gear and rotates.
3. embedded reinforced plastic pipe make-up machine according to claim 1 is characterized in that: plug is connected on the plug gear with bolt, makes uniform circular motion under the drive of plug gear.
4. embedded reinforced plastic pipe make-up machine according to claim 1, it is characterized in that: the elastomeric state plastic strap that dull and stereotyped head is extruded rides over side direction winding on the plug, steel wire net-belt rides over plug from other direction and twines, the fabric width of steel wire net-belt is less than the fabric width of plastic strap, and steel wire just can be wrapped in wherein by plastic strap.
5. embedded reinforced plastic pipe make-up machine according to claim 1, it is characterized in that: dial the rotation of net axle and can make the steel wire net-belt that is wrapped on the plug make axial linear movement along plug, with the circular motion of plug, the steel wire net-belt that embeds plastics has just synthesized screw.
6. embedded reinforced plastic pipe make-up machine according to claim 1, it is characterized in that: press polish is extracted the axle rotation and is compressed the reinforced plastic pipe of spiral forming, and forces it to break away from plug, breaks away from the reinforced plastic pipe of plug, cut off after sizing with water cooling, but just rolling, the packing dispatch from the factory.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010028024XA CN101954745A (en) | 2010-01-06 | 2010-01-06 | Forming machine for built-in rib-adding plastic pipes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010028024XA CN101954745A (en) | 2010-01-06 | 2010-01-06 | Forming machine for built-in rib-adding plastic pipes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958696A (en) * | 2017-04-25 | 2017-07-18 | 广西北海跃达玻璃钢制品有限公司 | A kind of anti-extrusion glass fiber reinforced plastic sand-inclusion pipeline |
| CN111026069A (en) * | 2019-12-31 | 2020-04-17 | 东北轻合金有限责任公司 | Centralized control factory equipment management method |
| CN112223779A (en) * | 2020-10-30 | 2021-01-15 | 邓权塑业科技（湖南）有限公司 | Steel wire winding angle control device and method for steel wire mesh reinforced composite pipe |
| CN114193805A (en) * | 2021-12-10 | 2022-03-18 | 永高股份有限公司 | Forming equipment of continuous fiber reinforced composite pipe |
-
2010
- 2010-01-06 CN CN201010028024XA patent/CN101954745A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958696A (en) * | 2017-04-25 | 2017-07-18 | 广西北海跃达玻璃钢制品有限公司 | A kind of anti-extrusion glass fiber reinforced plastic sand-inclusion pipeline |
| CN111026069A (en) * | 2019-12-31 | 2020-04-17 | 东北轻合金有限责任公司 | Centralized control factory equipment management method |
| CN112223779A (en) * | 2020-10-30 | 2021-01-15 | 邓权塑业科技（湖南）有限公司 | Steel wire winding angle control device and method for steel wire mesh reinforced composite pipe |
| CN114193805A (en) * | 2021-12-10 | 2022-03-18 | 永高股份有限公司 | Forming equipment of continuous fiber reinforced composite pipe |
| CN114193805B (en) * | 2021-12-10 | 2023-03-21 | 公元股份有限公司 | Forming equipment of continuous fiber reinforced composite pipe |
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Application publication date: 20110126 |