CN104653935A - Insert-type injection pipe joint and production process thereof - Google Patents
Insert-type injection pipe joint and production process thereof Download PDFInfo
- Publication number
- CN104653935A CN104653935A CN201510080447.9A CN201510080447A CN104653935A CN 104653935 A CN104653935 A CN 104653935A CN 201510080447 A CN201510080447 A CN 201510080447A CN 104653935 A CN104653935 A CN 104653935A
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- Prior art keywords
- inserts
- injection molding
- built
- type injection
- insert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
- F16L47/32—Branch units, e.g. made in one piece, welded, riveted
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to an insert-type injection pipe joint. The insert-type injection pipe joint comprises an insert and a pipe main body part, wherein the pipe main body part comprises a combination part and a connecting part; the combination part is fixedly connected with the connecting part in an airtight manner; the insert is connected with the connecting part in a sleeving manner; the insert-type injection pipe is characterized in that an annular bulge is arranged on the outside wall of the insert; the annular bulge surrounds the periphery of the outer surface of the insert; a groove which corresponds to the annular bulge is formed in the inside wall of the connecting part; the groove surrounds the periphery of the inside wall of the connecting part; the annular bulge is embedded into the groove; the contact area between the insert and the connecting part can be increased by embedding the annular bulge into the groove, so that the combination strength of the pipe joint can be improved; the insert is combined with the pipe main body part in an injection mode, and the machining difficulty cannot be increased because of the thickness of the wall of the insert.
Description
Technical field:
The present invention relates to a kind of built-in type injection molding pipe part joint and production technology thereof, belong to tube connector technical field.
Background technique:
Now in life, piping facility is in draining, and blowdown, the fields such as network service play an important role, and realize the connection fast and effectively of pipeline, are the important rings that piping facility effectively plays a role.
By injection molding manner connection pipe fitting, difficulty of processing can not be increased because of the thickness problem of processed pipe wall.In prior art, the connection of pipe fitting, adopts cushion rubber connection, Flange joint, steel to mould the machinery types such as transit joint and connect usually; Cushion rubber is connected, the groove mould relative difficulty of machining small footpath pipe fitting cushion rubber, be difficult to realize, and according to said method connect and need use cushion rubber, add link cost; The subsequent machining technology of Flange joint is loaded down with trivial details, and link cost is high and connection speed is slower; Steel is moulded excessive joint and is connected same price costliness, and the more important thing is, when the pipe fitting be connected can not rotate, steel is moulded excessive connector connecting method and cannot effectively be realized.By contrast by injection molding manner connection pipe fitting, the deficiency that above-mentioned Placement exists can be overcome, and injection molding manner inserts can not increase difficulty of processing because of the thickness problem of processed pipe wall; The characteristics such as some tube materials are large because of viscosity, mobility is low, are difficult to realize injection moulding and connect.
Such as, the drainage tube wall thickness used such as existing row's rain, blowdown, the water inspection shaft tube wall thickness that relatively feeds water is much thin, the PVC/CPVC pipe fitting that usual consideration working strength is high, just requirement of strength can be met when tube wall is relatively thin, but PVC and CPVC material viscosity is large, processes more difficult.Injection molding can be considered to use the good polyolefin of mobility, but polyolefin pipe fitting cannot meet the requirement that be connected gluing with common PVC/CPVC tubing.
Chinese patent literature CN201526769U (application number: 200920200498.0) disclose a kind of pvc pipe joint, comprise body and interface, internal diameter size and the standard pipe size of interface are equal, gapless surplus, inwall near bead place is shaped with many directly to the groove of arrangement, interface and pipe way gapless surplus, being squeezed by glue after pipe inserts scrapes bottom interface, realizes adhesion.Above-mentioned joint processing difficulties, cost are high, cumbersome, and the seal for pipe joints adopting this kind of Placement to connect is poor, and anti-pressure ability is low, and stability is bad.
Summary of the invention:
For the deficiencies in the prior art, the invention provides a kind of built-in type injection molding pipe part joint.This joint embeds in the main body of good fluidity to arrange inserts, and change traditional injection moulding Placement, the injection moulding not only achieved between the large pipe fitting of viscosity connects, and structure is simple, and cost is low, and feasibility is high.
The present invention also provides a kind of production technology of above-mentioned built-in type injection molding pipe part joint.
Technological scheme of the present invention is as follows:
A kind of built-in type injection molding pipe part joint, comprise inserts and main pipe body part, described inserts is connected by injection molding manner with main pipe body part; Described main pipe body part comprises bound fraction and attachment portion, and bound fraction is fixedly connected with attachment portion is airtight; Described inserts and attachment portion socket; Described inserts outer side wall is provided with annular protrusion, and annular protrusion is surrounded on inserts outer surface one week; Described attachment portion madial wall is provided with the groove corresponding to annular boss forms, and groove to be surrounded on the madial wall of attachment portion one week; Described annular protrusion embeds and is arranged in groove; Described inserts is fixedly connected with the tubing that will carry out being connected or pipe fitting.Annular protrusion is embedded in the area of contact that can increase inserts and attachment portion in groove, and then improves the adhesive strength of described pipe fitting joint; Adopt injection molding manner inserts and main pipe body part to be combined, difficulty of processing can not be increased because of the thickness problem of inserts wall; Direct employing injection molding manner processes the joint obtained does not need other structures such as cushion rubber, simplifies the flow passage structure of joint, reduces the processing cost of mould and integrity is strong, good airproof performance, and stability is higher.
Preferred according to the present invention, described inserts is connected by adhesion mode with the pipe fitting that will carry out being connected.
Preferred according to the present invention, described inserts is consistent with the tube material that will carry out connecting.Material unanimously can realize inserts and connect with the good adhesion of pipe fitting will carrying out being connected.
Preferred according to the present invention, described inserts is PVC/CPVC material; Described main pipe body part is polyolefin material.The intensity of PVC/CPVC pipe is high, just can meet requirement of strength when tube wall is relatively thin; Polyolefin mobility is better, and processing is simple, effectively can realize injection molding.
Preferred according to the present invention, the corner that the convex portion corner of described annular protrusion and described convex portion contact with inserts outer side wall is arcuate structure.The benefit herein designed is, not only increase the area of contact increasing inserts and attachment portion further, connect more firm, the sealing of further raising joint and stability, and arcuate structure is beneficial to joint fluid flow inside, to prevent or to weaken the impact failure of main body material to insert structure, increase the service life.
Preferred according to the present invention, the number of described annular protrusion is 1-5.Determine the number of annular protrusion as the case may be, under the prerequisite increasing inserts and attachment portion area of contact, manufacturing procedure can be determined, improve work efficiency, time saving and energy saving.
Preferred according to the present invention, the plane of described inserts madial wall and described bound fraction madial wall joint is in same plane.The benefit herein designed is, reduces joint internal flow resistance, is beneficial to the patency of flowing, prevents or weaken the impact failure of main body material to insert structure, increasing the service life.
A production technology for built-in type injection molding pipe part joint, comprises step as follows:
(1) inserts is produced; The mode of production of inserts has two kinds, and one is injection molding manner; Another kind can adopt solid-wall pipe to mill out corresponding shape at lathe and obtain; Produce inserts according to injection molding manner, answer design inlay mould, then adopt traditional injection moulding mode to inject inserts;
(2) Design and manufacture injection mould;
(3) inserts is put on the inserts locking pin of the injection mould described in step (2), then matched moulds, molding and forming main pipe body part, utilize injection molding manner inserts and main pipe body part to be combined together, obtain injection molding pipe part joint.
Advantage of the present invention is:
1, according to built-in type injection molding pipe part joint of the present invention, adopt injection molding manner processing, difficulty of processing can not be increased because of the thickness problem of pipe wall, and simplify the flow passage structure of joint, reduce the processing cost of mould;
2, according to built-in type injection molding pipe part joint of the present invention, not only solve the problem of the injection moulding difficulty brought because of characteristics such as tube material poor fluidity, viscosity height, and can realize effectively firmly being connected between inserts with pipe fitting;
3, do not need to be connected by cushion rubber according to built-in type injection molding pipe part joint of the present invention, just there is not the difficulty that machining small footpath pipe fitting aprons slot mould brings yet, solve cushion rubber and connect the Mould Machining problem brought, reduce the cost using cushion rubber to connect;
4, the joint that the employing injection molding manner of built-in type injection molding pipe part joint of the present invention obtains is an one-piece element, and inserts and main pipe body part adopt injection molding manner to combine, and the joint integrity obtained is strong, good airproof performance, and stability is higher;
5, according to built-in type injection molding pipe part joint of the present invention, structure is simple, and practicability is high, is applicable to the structural requirement of the joint of various structures.
Accompanying drawing illustrates:
Fig. 1 is built-in type injection molding pipe part joint of the present invention converges threeway structural representation for inspection shaft 250 × 160/110;
Fig. 2 is built-in type injection molding pipe part joint of the present invention converges threeway sectional drawing for inspection shaft 250 × 160/110;
Fig. 3 is the structural representation of built-in type injection molding pipe part joint of the present invention for 110 × 110 pipe collars;
Fig. 4 is the sectional drawing of built-in type injection molding pipe part joint of the present invention for 110 × 110 pipe collars;
Fig. 5 is the axial, cross-sectional view of annular protrusion of the present invention;
Wherein, 1, inserts; 2, attachment portion; 3, annular protrusion; 4, bound fraction.
Embodiment:
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited thereto.
Embodiment 1,
As shown in Figure 1-2.
A kind of built-in type injection molding pipe part joint being used for inspection shaft 250 × 160/110 and converging threeway, comprise inserts 1 and main pipe body part, described inserts 1 is connected by injection molding manner with main pipe body part; Described main pipe body part comprises bound fraction 4 and attachment portion 2, and bound fraction 4 is fixedly connected with attachment portion 2 is airtight; Described inserts 1 and attachment portion 2 are socketed; Described inserts 1 outer side wall is provided with 3 annular protrusions 3, and annular protrusion 3 is surrounded on inserts 1 outer surface one week; Described attachment portion 2 madial wall is provided with the groove corresponding to annular protrusion 3 shape, and groove to be surrounded on the madial wall of attachment portion 2 one week; Described annular protrusion 3 embeds and is arranged in groove; Described inserts 1 is consistent with the tube material that will carry out connecting; Described inserts 1 is connected by adhesion mode with the tubing that will carry out being connected or pipe fitting.Annular protrusion 3 is embedded in the area of contact that can increase inserts 1 and attachment portion 2 in groove, and then improves the adhesive strength of described pipe fitting joint; Adopt injection molding manner inserts 1 and main pipe body part to be combined, difficulty of processing can not be increased because of the thickness problem of inserts 1 wall; Direct employing injection molding manner processes the joint obtained does not need other structures such as cushion rubber, simplifies the flow passage structure of joint, reduces the processing cost of mould and integrity is strong, good airproof performance, and stability is higher.
Embodiment 2,
One as described in Example 1 is used for the built-in type injection molding pipe part joint that inspection shaft 250 × 160/110 converges threeway, and its difference is: described inserts 1 is PVC/CPVC material; Described main pipe body part is polyolefin material.The intensity of PVC/CPVC pipe is high, just can meet requirement of strength when tube wall is relatively thin; Polyolefin mobility is better, and processing is simple.
Embodiment 3,
One as described in Example 1 is used for inspection shaft 250 × 160/110 and converges threeway built-in type PVC/CPVC pipe joint, and its difference is: the corner that the convex portion corner of described annular protrusion 3 and described convex portion 3 contact with inserts 1 outer side wall is arcuate structure.The benefit herein designed is, not only increase the area of contact increasing inserts 1 and attachment portion 2 further, connect more firm, the sealing of further raising joint and stability, and arcuate structure is beneficial to joint fluid flow inside, to prevent or to weaken the impact failure of main body material to insert structure, increase the service life.
Embodiment 4,
As shown in Figure 3-4.
A kind of for 110 × 110 pipe collar built-in type injection molding pipe part joints, comprise inserts 1 and main pipe body part, described inserts 1 is connected by injection molding manner with main pipe body part; Described main pipe body part comprises bound fraction 4 and attachment portion 2, and bound fraction 4 is fixedly connected with attachment portion 2 is airtight; Described inserts 1 and attachment portion 2 are socketed; Described inserts 1 outer side wall is provided with 3 annular protrusions 3, and annular protrusion 3 is surrounded on inserts 1 outer surface one week; Described attachment portion 2 madial wall is provided with the groove corresponding to annular protrusion 3 shape, and groove to be surrounded on the madial wall of attachment portion 2 one week; Described annular protrusion 3 embeds and is arranged in groove; Described inserts 1 is consistent with the tube material that will carry out connecting; Described inserts 1 is connected by adhesion mode with the pipe fitting that will carry out being connected.Annular protrusion 3 is embedded in the area of contact that can increase inserts 1 and attachment portion 2 in groove, and then improves the adhesive strength of described pipe fitting joint; Adopt injection molding manner inserts 1 and main pipe body part to be combined, difficulty of processing can not be increased because of the thickness problem of inserts 1 wall; Direct employing injection molding manner processes the joint obtained does not need other structures such as cushion rubber, simplifies the flow passage structure of joint, reduces the processing cost of mould and integrity is strong, good airproof performance, and stability is higher.
Embodiment 5,
One as described in Example 4 is used for 110 × 110 pipe collar built-in type injection molding pipe part joints, and its difference is: the plane of described inserts 1 madial wall and described bound fraction 4 madial wall joint is in same plane.The benefit herein designed is, reduces joint internal flow resistance, is beneficial to the patency of flowing, prevents or weaken the impact failure of main body material to insert structure, increasing the service life.
Embodiment 6,
The production technology of a kind of built-in type injection molding pipe part joint as described in embodiment 1-5, comprises step as follows:
(1) inserts 1 is produced; The mode of production of inserts 1 has two kinds, and one is injection molding manner; Another kind can adopt solid-wall pipe to mill out corresponding shape at lathe and obtain; Produce inserts 1 according to injection molding manner, answer design inlay mould, then adopt traditional injection moulding mode to inject inserts;
(2) Design and manufacture injection mould;
(3) inserts 1 is put on the inserts locking pin of the injection mould described in step (2), then matched moulds, molding and forming main pipe body part, utilize injection molding manner inserts 1 and main pipe body part to be combined together, obtain injection molding pipe part joint.
Claims (8)
1. a built-in type injection molding pipe part joint, comprises inserts and main pipe body part; It is characterized in that: described inserts is connected by injection molding manner with main pipe body part; Described main pipe body part comprises bound fraction and attachment portion, and bound fraction is fixedly connected with attachment portion is airtight; Described inserts and attachment portion socket; Described inserts outer side wall is provided with annular protrusion, and annular protrusion is surrounded on inserts outer surface one week; Described attachment portion madial wall is provided with the groove corresponding to annular boss forms, and groove to be surrounded on the madial wall of attachment portion one week; Described annular protrusion embeds and is arranged in groove; Described inserts is fixedly connected with the tubing that will carry out being connected or pipe fitting.
2. a kind of built-in type injection molding pipe part joint according to claim 1, is characterized in that: described inserts is connected by adhesion mode with the pipe fitting that will carry out being connected.
3. a kind of built-in type injection molding pipe part joint according to claim 2, is characterized in that: described inserts is consistent with the tube material that will carry out connecting.
4. a kind of built-in type injection molding pipe part joint according to claim 1, is characterized in that: described inserts is PVC/CPVC material; Described main pipe body part is polyolefin material.
5. a kind of built-in type injection molding pipe part joint according to claim 1, is characterized in that: the corner that the convex portion corner of described annular protrusion and described convex portion contact with inserts outer side wall is arcuate structure.
6. a kind of built-in type injection molding pipe part joint according to claim 1, is characterized in that: the number of described annular protrusion is 1-5.
7. a kind of built-in type injection molding pipe part joint according to claim 1, is characterized in that: the plane of described inserts madial wall and described bound fraction madial wall joint is in same plane.
8. an a kind of production technology of built-in type injection molding pipe part joint as described in claim 1-7 any one claim, comprises step as follows:
(1) inserts is produced; The mode of production of inserts has two kinds, and one is injection molding manner; Another kind can adopt solid-wall pipe to mill out corresponding shape at lathe and obtain; Produce inserts according to injection molding manner, answer design inlay mould, then adopt traditional injection moulding mode to inject inserts;
(2) Design and manufacture injection mould;
(3) inserts is put on the inserts locking pin of the injection mould described in step (2), then matched moulds, molding and forming main pipe body part, utilize injection molding manner inserts and main pipe body part to be combined together, obtain injection molding pipe part joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080447.9A CN104653935B (en) | 2015-02-13 | 2015-02-13 | A kind of built-in type injection molding pipe part joint and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080447.9A CN104653935B (en) | 2015-02-13 | 2015-02-13 | A kind of built-in type injection molding pipe part joint and its production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104653935A true CN104653935A (en) | 2015-05-27 |
| CN104653935B CN104653935B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510080447.9A Active CN104653935B (en) | 2015-02-13 | 2015-02-13 | A kind of built-in type injection molding pipe part joint and its production technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114269537A (en) * | 2019-08-27 | 2022-04-01 | 三樱工业株式会社 | Method for producing resin tube with fixing member, apparatus for producing resin tube with fixing member, and resin tube with fixing member |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5109929A (en) * | 1990-09-07 | 1992-05-05 | Spears Manufacturing Corp. | Sprinkler head adapter |
| EP0611276B1 (en) * | 1993-02-08 | 1997-05-21 | Karl Egger | Connecting element for joining a metal fitting to a plastic pipe that transports liquid products |
| CN2833303Y (en) * | 2005-11-11 | 2006-11-01 | 武汉金牛经济发展有限公司 | Double fused pipe fitting for metal plastic composite pipe |
| CN201069030Y (en) * | 2007-02-02 | 2008-06-04 | 郝源增 | Novel plastic insert for plastic pipe fitting |
| CN204477576U (en) * | 2015-02-13 | 2015-07-15 | 山东华信塑胶股份有限公司 | A kind of built-in type injection molding pipe part joint |
-
2015
- 2015-02-13 CN CN201510080447.9A patent/CN104653935B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5109929A (en) * | 1990-09-07 | 1992-05-05 | Spears Manufacturing Corp. | Sprinkler head adapter |
| EP0611276B1 (en) * | 1993-02-08 | 1997-05-21 | Karl Egger | Connecting element for joining a metal fitting to a plastic pipe that transports liquid products |
| CN2833303Y (en) * | 2005-11-11 | 2006-11-01 | 武汉金牛经济发展有限公司 | Double fused pipe fitting for metal plastic composite pipe |
| CN201069030Y (en) * | 2007-02-02 | 2008-06-04 | 郝源增 | Novel plastic insert for plastic pipe fitting |
| CN204477576U (en) * | 2015-02-13 | 2015-07-15 | 山东华信塑胶股份有限公司 | A kind of built-in type injection molding pipe part joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114269537A (en) * | 2019-08-27 | 2022-04-01 | 三樱工业株式会社 | Method for producing resin tube with fixing member, apparatus for producing resin tube with fixing member, and resin tube with fixing member |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104653935B (en) | 2017-08-25 |
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