CN1749626A - Coextruding heat winding structure wall pipe, processing method and method - Google Patents
Coextruding heat winding structure wall pipe, processing method and method Download PDFInfo
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- CN1749626A CN1749626A CNA2005100127516A CN200510012751A CN1749626A CN 1749626 A CN1749626 A CN 1749626A CN A2005100127516 A CNA2005100127516 A CN A2005100127516A CN 200510012751 A CN200510012751 A CN 200510012751A CN 1749626 A CN1749626 A CN 1749626A
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Abstract
The present invention provides a kind of hot wound and extruded pipe and its production process and forming mold, and the new product with low material consumption and high annular rigidity is produced based on equivalent wall thickness principle. The hot wound and extruded pipe is produced through hot screw winding plastic belt onto mold core and extruding to coat with the same kind of material. The present invention can produce co-extruded polyethylene pp pipe and polyethylene coated polypropylene single wall corrugated pipe with high strength and capable of being used as the reinforcing pipe for great caliber pipe. The present invention has high production efficiency.
Description
Technical field
The present invention relates to a kind of coextruding heat winding structure wall pipe, processing method and mould belong to plastic tube processing technique and equipment technical field.
Background technique
At present; large-diameter plastic pipe belongs to chemical building material; be to mould Dai Gang,, to be applied to municipal drainage to mould update product for cement; remote low-pressure water delivery; mine and chemical industry draining, the making of irrigation and water conservancy irrigation and ventilation duct and pressure vessels for the chemical industry etc. are to saving the energy; reduce and pollute, the protection environment is significant.Unit (extruder) mode of production is generally adopted in this production of moulding pipe at present, the pipe of moulding that is used to twine skeleton is to extrude the coated polypropylene plastics pipe of U type circular arc band (being called for short the pp pipe) mode with mould to produce, do on the tubing of basic unit as stiffening rib by the online polyethylene flat rubber belting that is wrapped in, the tubing of Sheng Chaning has following defective in this way: 1, polyethylene can not be managed by complete coated pp sometimes, formation exposes, reduce the product ring stiffness, in order to guarantee its quality of product, flat rubber belting twines very thick that basic unit often designs; 2, coated pp pipe diameter is unsuitable excessive, is 54 millimeters to the maximum, and the size-constrained system of skeleton influences the product ring stiffness; 3, the same to the polythene material requirement with basic unit, the cost of production height.
Summary of the invention
The object of the present invention is to provide a kind of pair of extruder coextruding heat winding structure wall pipe, processing method and shaping die to form new product structure, reduce the material use amount, according to equivalent wall thickness principle, increase the ring stiffness of final products.
Technological scheme of the present invention is achieved in that this coextruding heat winding structure wall pipe, be that it is characterized in that: the tube wall of this tubing is the single-wall corrugated pipe that the plastic tape external heat is twined the coated same material of bonding co-extrusion by the heavy caliber pipe of plastic tape as basic unit's spiral heat winding molding bonded on the mold core pipe.
The tube wall that a kind of elongation technology scheme of the present invention is described coextruding heat winding structure wall pipe is that hollow and thin-walled rectangular tube spiral heat on the mold core pipe is twined molding bonded, and hollow and thin-walled rectangular tube outer wall heat is twined the single-wall corrugated pipe of the coated same material of bonding co-extrusion.
The processing method of described coextruding heat winding structure wall pipe, a kind of technological scheme is: adopt two parallel extruders, a polyethylene extrusion flat rubber belting is as basic unit; The coated poly single-wall corrugated pipe of another co-extrusion is as stiffening rib, and the online heat of spiral successively is wrapped on the mold core pipe of rotation and axial translation, the molding bonded heavy caliber pipe.
The processing method of described coextruding heat winding structure wall pipe, the elongation technology scheme is: an extruder is extruded the hollow and thin-walled rectangular tube and is twined as basic unit's spiral heat on the mold core pipe; The coated poly single-wall corrugated pipe of another co-extrusion is as stiffening rib, and the online heat of spiral successively is wrapped on the mold core pipe of rotation and axial translation, the molding bonded heavy caliber pipe.
In the hollow and thin-walled rectangular tube that described coextruding heat winding structure wall pipe processing method relates to 1-3 stiffening rib is set.
The hollow and thin-walled rectangular tube that described coextruding heat winding structure wall pipe processing method relates to twines the slit and is filled with the same material layer.
The processing mold of the coated polyethylene single-wall corrugated pipe of the co-extrusion of described coextruding heat winding structure wall pipe, its basic structure comprises the cross extruder head that is made of die holder, plug, detachable core rod and extrusion outlet, runner is characterized in that described runner is provided with ring release district, protruding center between plug and core rod.
The processing mold of the coated poly single-wall corrugated pipe of described co-extrusion, described detachable core rod and plug scyewed joint.
The processing mold of the coated poly single-wall corrugated pipe of described co-extrusion, release district, the protruding center of described ring is arranged between detachable core rod and the collecting plate.
The detachable core rod and the collecting plate front of the processing mold of the coated poly single-wall corrugated pipe of described co-extrusion are provided with a mouthful mould.
Adopt the polypropylene and the polyethylene co-extrusion pp pipe of processing method of the present invention and Mould Machining, the complete coated polypropylene single-wall corrugated pipe of polyethylene has increased intensity, and is most suitable as the strength bar of heavy caliber pipe.
This co-extrusion mode can make polyethylene and large diameter polypropylene single-wall corrugated pipe co-extrusion, produces large diameter pp cannon born frame, improves tubing ring stiffness (pipeline bears the ability of external load).Prior art pp pipe diameter is 21 millimeters, 34 millimeters, 42 millimeters, 54 millimeters, and the present invention increases diameter to 64 millimeter by changing core rod, 72 millimeters, 80 millimeters pp pipes are made skeleton, make product specification obtain expanding.
For extruder, extrusion capacity is certain, because material alleviates, tubing manufacturing efficiency improves; Simultaneously, owing to adopt the two-shipper mode to produce, increased an extruder, the speed of production of heavy caliber pipe will improve greatly.
The present invention is applied to soft pp pipe and polyethylene co-extrusion with steel-plastic coextrusion and aluminium plastic co-extruding Tool and Die Technology, mould specific has designed unique runner that ring release district, protruding center is arranged at corrugated flexible hose, indeformable when the high pressure co-extrusion to guarantee the PP pipe, also can adopt compound or modified plastics production further to reduce cost.
Description of drawings
Fig. 1 is coextruding heat winding structure wall pipe of the present invention and processing method schematic representation
Fig. 2 is a prior art processing method schematic representation
Fig. 3 is the processing mold structural representation of the coated poly single-wall corrugated pipe of co-extrusion
Fig. 4 is an enhancement mode double-wall structure wall pipe schematic representation
Among the figure:
A, plastic extruder B, plastic extruder C, distributing valve
1, pipe outer wall parcel plastics 2, single-wall corrugated pipe 3, plastics flat rubber belting
3-1, rectangular tube 3-2, stiffening rib 3-3, packed layer
4, mold core pipe 5, production tube 6, U-shaped plastic tape 7, plug 8, extrusion outlet
9, plastics 10, adpting flange 11, link 12, core rod 13, outlet discharge the district
14, mouthful mould 15, collecting plate 16, middle district 17, the die holder of discharging
Embodiment
The structural feature and the processing mode of Fig. 2, prior art shown in Figure 1 and coextruding heat winding structure wall pipe of the present invention, the mode of production shown in Figure 2 is that an extruder A gives flat rubber belting extrusion die and U type band extrusion die feed by distributing valve C, extrude flat rubber belting and U type band, the coated polyethylene single-wall corrugated pipe of U type band becomes tubing as skeleton with common winding of flat rubber belting.Processing method of the present invention is two extruder A, B co-operation, extrudes flat rubber belting 3 for one, and another extrudes coated poly polypropylene single-wall corrugated pipe 2 by the co-extrusion mode, and online heat is wrapped on the mold core pipe 4 and forms tubing.The specification of these two kinds of products, quality and material consumption are to such as table 1:
Table 1
| Title | Caliber | Pp manages diameter | Ring stiffness | Mi Chong |
| Former large-diameter plastic pipe | 1.2M | ?54CM | ?7890N/M | ?133.83KG |
| Large-diameter plastic pipe of the present invention | 1.2M | ?65CM | ?8010N/M | ?98.33KG |
By table 1 as seen, produce the tubing of same caliber, owing to adopt different technology, have identical ring stiffness, under the prerequisite of identical using effect, every mitron material weight can reduce by 35.5 kilograms.
Another embodiment of coextruding heat winding structure wall pipe of the present invention is an enhancement mode double-wall structure wall pipe, as shown in Figure 4, its production method also is two extruder work, one of them extruder is extruded hollow and thin-walled rectangular tube 3-1 and is replaced flat rubber belting 3 as basic unit, outer wall twines the single-wall corrugated pipe 2 of the coated same material of bonding, online heat is wrapped on the mold core pipe 4 and forms tubing, rectangular tube can be provided with stiffening rib 3-2, it twines the slit and also is provided with poly packed layer 3-3, this constructed products is compared the ring stiffness that can effectively improve pipeline with the double-wall structure wall pipe of Korea S's technology production, makes product specification and performance obtain expanding.Save material contrast such as table 2:
| Title | Caliber | Pp manages diameter | Ring stiffness | Mi Chong |
| Former double-wall pipe | 1.6M | Do not have | 9345N/M | ?224KG |
| The enhancement mode double-wall pipe | 1.6M | 65CM | 9584N/M | ?185KG |
By table 2 as seen, under the identical situation of bore, every mitron heavily reduces by 39 kilograms, and the vast market popularizing prospect is arranged.
The processing mold of the coated polyethylene single-wall corrugated pipe of co-extrusion of the present invention's design shown in Figure 3, this mould is made of the cross extruder head, pass bellows 2 in the middle of the plug 7, between die holder 17, plug 7, the detachable core rod 12 runner is set, in order to prevent that bellows 2 is out of shape extruding under the high pressure, the runner of the present invention between core rod 12 and collecting plate 15 designed that ring discharges district 16 in the middle of protruding and outlet discharges district 13.
Mould of the present invention when product is remodeled owing to all be scyewed joint between core rod 12 and mouthful mould 14, the collecting plate 15, can be for convenience detach, significantly reduced the time of remodeling, the saving manpower and the energy are enhanced productivity.
Foregoing description is only as coextruding heat winding structure wall pipe of the present invention, and a kind of enforceable technological scheme of processing method and mould proposes, not as the single restrictive condition to its structure itself.
Claims (10)
1, coextruding heat winding structure wall pipe, be to go up heavy caliber pipe that spiral heat twine molding bonded as basic unit at mold core pipe (4) by plastic tape, it is characterized in that: the tube wall of this tubing is the single-wall corrugated pipe that the plastic tape external heat is twined the coated same material of bonding co-extrusion.
2, according to the described coextruding heat winding structure wall pipe of claim 1, the tube wall that it is characterized in that this tubing is that hollow and thin-walled rectangular tube (3-1) (4) spiral heat on the mold core pipe is twined molding bonded, and hollow and thin-walled rectangular tube outer wall heat is twined the single-wall corrugated pipe (2) of the coated same material of bonding co-extrusion.
3, according to the processing method of the described coextruding heat winding structure wall pipe of claim 1, it is characterized in that: adopt two parallel extruders, a polyethylene extrusion flat rubber belting (3) is as basic unit; The coated poly single-wall corrugated pipe of another co-extrusion (2) is as stiffening rib, and the online heat of spiral successively is wrapped on the mold core pipe (4) of rotation and axial translation, molding bonded heavy caliber pipe (5).
4, according to the processing method of the described coextruding heat winding structure wall pipe of claim 2, it is characterized in that: an extruder is extruded hollow and thin-walled rectangular tube (3-1) and is gone up the winding of spiral heat as basic unit at mold core pipe (4); The coated poly single-wall corrugated pipe of another co-extrusion (2) is as stiffening rib, and the online heat of spiral successively is wrapped on the mold core pipe (4) of rotation and axial translation, molding bonded heavy caliber pipe (5).
5,, it is characterized in that being provided with in the described hollow and thin-walled rectangular tube (3-1) 1-3 stiffening rib (3-2) according to the described coextruding heat winding structure wall pipe of claim 4 processing method.
6,, it is characterized in that described hollow and thin-walled rectangular tube (3-1) twines the slit and is filled with same material layer (3-3) according to the described coextruding heat winding structure wall pipe of claim 4 processing method.
7, according to the processing mold of the coated polyethylene single-wall corrugated pipe of the co-extrusion of claim 1 or 2 described coextruding heat winding structure wall pipes (2), its basic structure comprises the cross extruder head that is made of die holder (17), plug (7), detachable core rod (12) and extrusion outlet (8), runner is characterized in that described runner is provided with ring release district, protruding center (16) between plug and core rod.
8,, it is characterized in that described detachable core rod (12) and plug scyewed joint according to the processing mold of the coated poly single-wall corrugated pipe of the described co-extrusion of claim 7 (2).
9,, it is characterized in that described ring release district, protruding center (16) is arranged between detachable core rod (12) and the collecting plate (15) according to the processing mold of the coated poly single-wall corrugated pipe of the described co-extrusion of claim 7 (2).
10,, it is characterized in that described detachable core rod (12) and collecting plate (15) front are provided with a mouthful mould (14) according to the processing mold of the coated poly single-wall corrugated pipe of the described co-extrusion of claim 7 (2).
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| CNB2005100127516A CN100380040C (en) | 2005-08-26 | 2005-08-26 | Coextruding heat winding structure wall pipe, processing method and method |
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| CNB2005100127516A CN100380040C (en) | 2005-08-26 | 2005-08-26 | Coextruding heat winding structure wall pipe, processing method and method |
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| CN1749626A true CN1749626A (en) | 2006-03-22 |
| CN100380040C CN100380040C (en) | 2008-04-09 |
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| CN100441930C (en) * | 2006-12-22 | 2008-12-10 | 王利群 | Steel pipe skeleton pipe winded with reinforced plastic and processing method |
| CN101813216A (en) * | 2010-04-27 | 2010-08-25 | 吴耕田 | Wall tube material with composite structure and manufacture method thereof |
| CN102189688A (en) * | 2010-03-12 | 2011-09-21 | 刘建宏 | Winding-type pipe body manufacturing device |
| CN102205644A (en) * | 2011-04-13 | 2011-10-05 | 苏芳 | Method for producing plastic pipe fitting and special variable mould thereof |
| CN102248651A (en) * | 2011-05-23 | 2011-11-23 | 韩路平 | Irregular shaped opening die of pipe material with polyethylene multilayer wound structured wall |
| CN102441997A (en) * | 2011-09-21 | 2012-05-09 | 宁波康润机械科技有限公司 | Co-extrusion thermal winding structure wall tubular product and processing method and mould thereof |
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| JPS6136785U (en) * | 1984-08-09 | 1986-03-07 | 史朗 金尾 | Synthetic resin underground pipe |
| CN2641419Y (en) * | 2003-07-22 | 2004-09-15 | 青岛德意利管业有限公司 | Hollow wall and wound pipeline |
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| CN102248651B (en) * | 2011-05-23 | 2014-06-04 | 韩路平 | Irregular shaped opening die of pipe material with polyethylene multilayer wound structured wall |
| CN102248651A (en) * | 2011-05-23 | 2011-11-23 | 韩路平 | Irregular shaped opening die of pipe material with polyethylene multilayer wound structured wall |
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| CN111070613A (en) * | 2020-01-06 | 2020-04-28 | 姚春祥 | Electromagnetic heating extruder equipment for PVC composite pipe |
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| CN111483162B (en) * | 2020-03-30 | 2021-06-01 | 福建祥云科创新型管业科技有限公司 | Method for manufacturing HDPE high-rib winding reinforced pipe |
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