CN100447475C - Flexible active sleeve joint of polythylene polypropylene tubing and tube element with skeleton and their prodn. process - Google Patents
Flexible active sleeve joint of polythylene polypropylene tubing and tube element with skeleton and their prodn. process Download PDFInfo
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- CN100447475C CN100447475C CNB2004100145806A CN200410014580A CN100447475C CN 100447475 C CN100447475 C CN 100447475C CN B2004100145806 A CNB2004100145806 A CN B2004100145806A CN 200410014580 A CN200410014580 A CN 200410014580A CN 100447475 C CN100447475 C CN 100447475C
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- connecting head
- polyacrylic
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Abstract
The present invention relates to a flexible loop connector with a skeleton for polyethylene (PE) or polypropylene (PP) pipes and pipe fittings. The connector has the structure that supporting skeleton material is fixed in the middle, and PE or PP is injected and enwrapped on an internal layer and an external layer, wherein sheet metal with uniform holes is selected as the fixed support skeleton material. The present invention solves the main problems existing in the application of PE pipelines and PP pipelines, and the present invention can be especially used for ductworks with big calibers and high volumes. In fact, PE pipelines and PP pipelines with big calibers can satisfy the mechanical property indexes of GB/T7306-1987, such as compression resistance, fold resistance, etc., and can completely conform to the safety type evaluation criterion of drinking water transmission and distribution equipment for daily life prescribed by GB/T17219.
Description
One, technical field
The present invention relates to the flexible kink connecting head of tubing, pipe fitting, application and the method for making thereof of polyethylene, polypropylene aqueduct.
Two, background technique
Polyethylene (PE), polypropylene (PP) because environmental friendliness, to the human body nonhazardous, be well suited for being used for aqueduct, be an inevitable development trend in particular for water supply pipeline.Though the pipeline of inner liner metal is open in a lot of patent documents: relate to the composite pipe production technology as 00113157.5, particularly a kind of method that adopts sandwich material transition drawing plastics-lined composite metal pipe, the skin of this composite pipe is metal tube (1), internal layer is plastic tube (2), the mesosphere is an interlayer transition structure material, can be wire (3), be wound on the plastic tube in a spiral manner, also can be the rectangular thin slice of curved metal (5) of the geometrical shape hole that gathers, be distributed on the plastic tube outer wall along tube axis direction with several.03129456.1 disclose a kind of polypropylene straight tube with red copper inside liner, comprise external pipe and inside liner, straight tube one side is provided with coupled logical first arm that comprises external pipe and inside liner, and the material that external pipe 1 adopts is a polypropylene, and the material that inside liner adopts is a red copper.
But prior art fails really the subject matter of polyethylene, polypropylene aqueduct is solved: because PE, PP self material, its shrinkage is up to 2-2.8%, and simple modification can not overcome this deficiency at all, also can increase cost.Expanding with heat and contract with cold and easy deformation, can't be that flexible loop type is installed pipeline and continued to connect as the tube-inserted type of PVC.At present in polyethylene (PE), polypropylene (PP) the feedwater piping installation process generally can only be with hard connection (electric smelting socket joint type pipe network connects, hot melt butt joint pipe network connects, and referring to the PE water pipe GB and industry standard is installed) structure.The variation of nature climatic environment brings the expanding with heat and contract with cold of large-size of PE, PP pipe network, engineering site construction etc. is brought a difficult problem, the damaged on the whole hidden danger of leaking of pipe network is bigger, and especially the pipe network of large scale caliber more is difficult to adopt the tubing of PE, PP material to be connected with pipe fitting.
Three, summary of the invention
The present invention seeks to: a kind of polyethylene, the flexible kink connecting head of polypropylene tube pipe and method for making thereof are provided, solve and to expand with heat and contract with cold on PE, the PP pipe applications and the subject matter of easy deformation, overcome in present polyethylene (PE), polypropylene (PP) the feedwater piping installation process generally can only (electric smelting socket pipe network connects, hot melt butt joint pipe network connects with hard connection, can to pipeline connection be installed with flexible loop type, especially can be used for the pipe network of heavy caliber and big flow.
The present invention seeks to realize like this: with skeleton polyethylene, the flexible kink connecting head of polypropylene tube pipe, it is characterized in that in the middle of polyethylene, polypropylene pipe, pipe fitting joint, being the fixed bearing framework material, internal and external layer injection moulding parcel polyethylene, polypropylene.The fixed bearing framework material can be selected metal and nonmetal two classes for use, and the thin plate that uniform pore size is arranged is especially dashed in metal species material selection iron and steel, aluminium, copper, latten, mesh grid.Glass fibre, the carbon fiber of the braiding of non-metal kind material selection; Engineering plastics such as PVC, ABS framework material.The fixed bearing framework material all has certain intensity, can guarantee to overcome the yielding problem of PE, PP.
Tubing of the present invention is meant: the product that the tube connector place is fused joint of the present invention gets final product, and that the flexible kink connecting head of tubing of the present invention, pipe fitting also refers to is isometrical, reducing tee, flanged joint, reducing straight joint, elbow, directly connect the pipe network connected element of first-class indispensability.
The flexible kink connecting head of the tubing of polyethylene of the present invention, polypropylene aqueduct, pipe fitting method for making is: the method that adopts molding and forming: the action by mould is with the centre of skeletal fixation at PE, PP, the method of injection moulding: in the middle of the injection moulding die cavity of joint, place framework material, by the fixing pin that stretches out in the die cavity, carriage etc. framework material is propped up to the centre earlier, the fixing pin that stretches out in the automatic drawing back die cavity when being injected into 50-80%, carriage, the demoulding is finished, is incubated in injection moulding then.Certainly, skeleton is moulding in advance, and shape is near joint or pipe fitting.Fixing pin is stretched in the die cavity, carriage contracts and all can be solved by the existing technology of loosing core.
Characteristics of the present invention are: what this programme solved is exactly the subject matter of PE, PP pipe applications, especially can be used for the pipe network of heavy caliber and big flow.In fact, bigbore PE, PP pipeline can satisfy mechanical performance index: GB/T7306-1987 such as resistance to compression and anti-folding, also meet the safe type evaluation of the Drinking Water transmission ﹠ distribution wetting system of GB/T17219 regulation fully, and intensity is higher, fine corrosion resistance can guarantee discharge value.Have the requirement that on joint and pipe fitting connected element, can't satisfy in the application only.
The injection machine that the present invention adopts rapid injection mould of multistep and purpose made technology condition is fixed in prefabricated profiled metal frame in the die cavity, and is once injection molded through the special process injection machine.Application of the present invention comprises that also with polyethylene, polypropylene be the material modified of main component, as go up water tubing and pipe fitting with fiber reinforcement or plastic alloy etc.The present invention will make tube connector and tube connection piece parts, and PE, PP tubing itself are all no problem in every respect.
Four, description of drawings
Fig. 1 is straight connector structural representation in the pipe fitting of the present invention
Fig. 2 is isometrical, reducing tee joint structure schematic representation in the pipe fitting of the present invention
Fig. 3 is reducing straight joint structural representation in the pipe fitting of the present invention
Fig. 4 is direct connecting head structural representation in the pipe fitting of the present invention
Fig. 5 is angle elbow joints structural representation in the pipe fitting of the present invention
Fig. 6 is 90 degree elbow joints structural representations in the pipe fitting of the present invention
Fig. 7 is flanged joint structure schematic representation in the pipe fitting of the present invention
Put on skeleton 1, injection moulding PE, PP2, the joint among the figure O-ring seal R arc 3, adpting flange 4, flange fixed hole 5, with pipeline connecting end 6.
Five, embodiment
As shown in the figure, the flexible kink connecting head structure of polyethylene or polypropylene pipe is shown in Fig. 1-7: pipe fitting of the present invention has covered all isometrical, reducing tees, flanged joint, reducing straight joint, elbow, has directly connected the pipe network connected element of first-class indispensability promptly as shown in the figure.
Skeleton 1 is the support framework material, select metal and nonmetal two classes for use, especially select the iron and steel thin sheet goods in the metal species material for use, its method for making is: can be that welded wire becomes grid or is woven into grid, it can also be the tube that is rolled into cylinder after the thin flat plate punching cutting, coupling agent treatment is especially used in the laggard capable surface treatment of production moulding.Carry out injection moulding after the processing again.With PE and PP parcel support framework.
Glass fibre, the carbon fiber of the braiding of non-metal kind material selection; The skeleton that the rigidity of finished product is made not as above-mentioned metallic material.Use PE, PP injection moulding again after can making framework material with engineering plastics such as PVC, ABS, because both expansion coefficient differ bigger, though good rigidly, intersection interface may be peeled off.Effect is also not as such scheme.The fixed bearing framework material all has certain intensity, can guarantee to overcome the yielding problem of PE, PP.The PE of injection moulding, the same prior art of PP Shooting Technique condition.Joint among the figure is provided with the R arc 3 of putting O-ring seal and is also finished by mould and injection moulding.
The joint that has adpting flange 4, flange fixed hole 5 among Fig. 7 is used for being connected use with valve etc.
Fuse with pipeline connecting end 6 and PE or PP tubing among Fig. 1, can use molten socket of electric heating or hot melt butt joint etc. in inside plants with tube connector place welding joint of the present invention, the connection of pipe network then can connect (can connect continuously) with the bell-and-spigot pipe mode of PVC structure, this connection is can be with the continued access of flexible loop type pipeline, PE or PP expand with heat and contract with cold and the problem of easy deformation is solved at joint, can guarantee that then pipe network does not have leakage because the joint is indeformable.
The tubing of caliber more than DN60mm is more suitable for application of the present invention, and also being more needs the caliber used in the water inlet net of town and country.
The tubing of polyethylene of the present invention, polypropylene aqueduct, the flexible kink connecting head of pipe fitting method for making are: pass through the action of mould during molding and forming with the centre of skeletal fixation at PE, PP, the method for injection moulding; In the middle of the injection moulding die cavity of joint, be placed on framework material, going out the fixing pin or the carriage that stretch out in the die cavity earlier presses against framework material to the centre, the i.e. fixing pin that stretches out in the automatic drawing back die cavity when die cavity is injected into 50-80%, carriage, the demoulding is finished, is incubated in injection moulding then.Certainly, skeleton is moulding in advance, and shape is near joint or pipe fitting.Fixing pin, the flexible technology of loosing core that all can have of carriage solve in the die cavity.
Fig. 1-7 is a various parts pipe fitting of the present invention, and Fig. 1 is that straight connector, Fig. 2 are that 90 degree elbow joints, Fig. 7 be band flat flange joint for direct connecting head, Fig. 5 for angle elbow joints, Fig. 6 for reducing straight joint, Fig. 4 for isometrical, reducing tee joint, Fig. 3.
Claims (7)
1, the flexible kink connecting head of band skeleton polyethylene or polyacrylic pipe part, the joint structure that it is characterized in that polyethylene or polyacrylic tubing or pipe fitting is: middle is tubular fixed bearing skeleton, and the internal and external layer injection moulding wraps the polyethylene or the polypropylene of support framework.
2, the flexible kink connecting head of the polyethylene of band skeleton according to claim 1 or polyacrylic pipe part is characterized in that the fixed bearing skeleton selects for use the thin plate of iron and steel, aluminium, copper or alloy to make.
3, the flexible kink connecting head of the polyethylene of band skeleton according to claim 1 and 2 or polyacrylic pipe part is characterized in that the fixed bearing skeleton is for dashing the thin plate that even hole is arranged.
4, the flexible kink connecting head of the polyethylene of band skeleton according to claim 2 or polyacrylic pipe part, it is characterized in that the fixed bearing skeleton be welded wire be woven into grid or thin flat plate punching cutting after be rolled into the tubular of cylinder.
5, the flexible kink connecting head of the polyethylene of band skeleton according to claim 1 or polyacrylic pipe part is characterized in that the fixed bearing skeleton is the glass fibre that adopts braiding, carbon fiber, PVC or the engineering plastics of braiding.
6, the flexible kink connecting head of the polyethylene of band skeleton according to claim 1 and 2 or polyacrylic pipe part is characterized in that the kink connecting head is equal tee, reducing tee, flanged joint, reducing straight joint, elbow or straight tube connecting head.
7, the method for making of the polyethylene of band skeleton or the flexible kink connecting head of polyacrylic pipe part: the method that adopts molding and forming, action by mould is with the skeletal fixation of the moulding in advance centre at PE, PP, its feature is placed with the fixed bearing skeleton in the middle of the injection moulding die cavity of joint, by fixing pin that stretches out in the die cavity or carriage framework material is propped up to the centre earlier, freely regain the fixing pin, the carriage that stretch out in the die cavity when being injected into 50-80%, finish injection moulding, the insulation demoulding then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100145806A CN100447475C (en) | 2004-04-07 | 2004-04-07 | Flexible active sleeve joint of polythylene polypropylene tubing and tube element with skeleton and their prodn. process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100145806A CN100447475C (en) | 2004-04-07 | 2004-04-07 | Flexible active sleeve joint of polythylene polypropylene tubing and tube element with skeleton and their prodn. process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563775A CN1563775A (en) | 2005-01-12 |
| CN100447475C true CN100447475C (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100145806A Expired - Fee Related CN100447475C (en) | 2004-04-07 | 2004-04-07 | Flexible active sleeve joint of polythylene polypropylene tubing and tube element with skeleton and their prodn. process |
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| CN (1) | CN100447475C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102979980A (en) * | 2012-12-06 | 2013-03-20 | 上海皮尔萨管业有限公司 | Composite temperature-resistant loose joint |
| CN103629468A (en) * | 2012-12-24 | 2014-03-12 | 安徽康嘉塑胶建材有限公司 | PE/PP pipe or pipe fitting hose sleeve connector with framework and manufacturing technology |
| CN103009570B (en) * | 2012-12-26 | 2015-04-15 | 宁波市鄞州剑均机械科技有限公司 | Plastic mould for flower stand center connectors |
| CN103009571B (en) * | 2012-12-26 | 2014-08-06 | 宁波市鄞州剑均机械科技有限公司 | Plastic mould for flower stand center connectors with bolts |
| CN103542209A (en) * | 2013-10-28 | 2014-01-29 | 江苏吉星管业科技有限公司 | Ocean transporting floating flexible joint and preparation thereof |
| CN104088649B (en) * | 2014-06-27 | 2016-05-11 | 上海隧道工程有限公司 | The superimposed lining cutting member of composite connects the reducer union of use |
| CN109373087A (en) * | 2018-11-16 | 2019-02-22 | 江阴金用管道有限公司 | Heavy caliber polyethylene socket pipe member of the bellmouth with skeleton |
| CN111255955A (en) * | 2018-11-30 | 2020-06-09 | 上海英泰塑胶股份有限公司 | High-pressure-resistant injection-molded pipe fitting with embedded reinforced core piece |
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| CN1269482A (en) * | 2000-04-14 | 2000-10-11 | 东泰(成都)工业有限公司 | Connection method of metal skeleton reinforced composite plastic pipeline |
| CN1296880A (en) * | 2000-11-21 | 2001-05-30 | 于建新 | Method for producing plastic pipe with R-shaped sealing slot |
| CN2439585Y (en) * | 2000-05-21 | 2001-07-18 | 温州南方国欣设备制造有限公司 | Metallic spiral woven net and plastic composite tube |
| CN1340389A (en) * | 2000-08-31 | 2002-03-20 | 贵州凯撒铝业有限公司 | Technology for drawing plastics-lined composite metal pipe with sandwich transition structure material |
| CN2505676Y (en) * | 2001-11-01 | 2002-08-14 | 金德铝塑复合管有限公司 | Hot melt connecting pipe fittings |
| CN1470794A (en) * | 2003-06-23 | 2004-01-28 | 章鸿杰 | Polypropylene straight tube with red copper lining |
| CN2700681Y (en) * | 2004-04-07 | 2005-05-18 | 于建新 | Flexible loop connector with skeleton for polyethylene or polypropylene pipe fittings |
-
2004
- 2004-04-07 CN CNB2004100145806A patent/CN100447475C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582418A (en) * | 1966-08-31 | 1971-06-01 | Shell Oil Co | Production of crimped thermoplastic fibers |
| CN1269482A (en) * | 2000-04-14 | 2000-10-11 | 东泰(成都)工业有限公司 | Connection method of metal skeleton reinforced composite plastic pipeline |
| CN2439585Y (en) * | 2000-05-21 | 2001-07-18 | 温州南方国欣设备制造有限公司 | Metallic spiral woven net and plastic composite tube |
| CN1340389A (en) * | 2000-08-31 | 2002-03-20 | 贵州凯撒铝业有限公司 | Technology for drawing plastics-lined composite metal pipe with sandwich transition structure material |
| CN1296880A (en) * | 2000-11-21 | 2001-05-30 | 于建新 | Method for producing plastic pipe with R-shaped sealing slot |
| CN2505676Y (en) * | 2001-11-01 | 2002-08-14 | 金德铝塑复合管有限公司 | Hot melt connecting pipe fittings |
| CN1470794A (en) * | 2003-06-23 | 2004-01-28 | 章鸿杰 | Polypropylene straight tube with red copper lining |
| CN2700681Y (en) * | 2004-04-07 | 2005-05-18 | 于建新 | Flexible loop connector with skeleton for polyethylene or polypropylene pipe fittings |
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| CN1563775A (en) | 2005-01-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangyin Xingyu Plastic Co., Ltd. Assignor: Yu Jianxin Contract fulfillment period: 2009.3.1 to 2024.4.6 contract change Contract record no.: 2009320000231 Denomination of invention: Flexible active sleeve joint of polythylene polypropylene tubing and tube element with skeleton and their prodn. process Granted publication date: 20081231 License type: Exclusive license Record date: 2009.3.5 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.1 TO 2024.4.6; CHANGE OF CONTRACT Name of requester: JIANGYIN CITY XINGYU PLASTIC CO., LTD. Effective date: 20090305 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20130407 |