WO2010087134A1 - 分岐部付パイプの製造方法 - Google Patents
分岐部付パイプの製造方法 Download PDFInfo
- Publication number
- WO2010087134A1 WO2010087134A1 PCT/JP2010/000332 JP2010000332W WO2010087134A1 WO 2010087134 A1 WO2010087134 A1 WO 2010087134A1 JP 2010000332 W JP2010000332 W JP 2010000332W WO 2010087134 A1 WO2010087134 A1 WO 2010087134A1
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- WO
- WIPO (PCT)
- Prior art keywords
- branch
- cavity
- pipe
- main
- floating core
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 239000011347 resin Substances 0.000 claims abstract description 48
- 238000007667 floating Methods 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 7
- 229920003002 synthetic resin Polymers 0.000 abstract description 6
- 239000000057 synthetic resin Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C45/1711—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles and removing excess material from the mould cavity by the introduced fluid, e.g. to an overflow cavity
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
-
- 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
- B29C2045/0087—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor making hollow articles using a floating core movable in the mould cavity by fluid pressure and expelling molten excess material
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C2045/1724—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles hollows used as conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Definitions
- the present invention relates to a method of manufacturing a pipe integrally molded with a synthetic resin, particularly a pipe having a hollow branch portion.
- a floating core having a diameter corresponding to the inner diameter of the pipe is provided at one end of the cavity and a pressure port for pressurizing a pressurized fluid.
- a mold having a discharge port at the other end of the cavity is used. After the cavity is filled with molten resin, pressurized fluid is injected from the pressure port to connect the floating core to the discharge port side.
- Patent Documents 1 and 2). a method and apparatus for integrally forming a hollow pipe by forming a hollow portion in the resin in the main cavity and extruding excess resin from the discharge port.
- Patent Documents 1 and 2 form the hollow portion of the pipe as a moving trace of the floating core. And since the movement of a floating core is restricted to only one direction, there exists a problem which cannot manufacture the pipe which has a branch part. It can be considered that a pipe with a branching part can be integrally formed by providing a plurality of floating cores and moving them in different directions, but it is possible to move a plurality of floating cores in different directions. Extremely difficult due to mold structure.
- Patent Document 3 discloses a method of manufacturing a pipe with a branch portion by a molding method using a floating core.
- Patent Document 3 uses a slide core to mold the branch part, and can only mold the branch part of the straight pipe. Immediately after molding, the main pipe part and the branch part are joined by a thin resin film. The range of application has been limited in view of the fact that machining is necessary for complete removal.
- the present invention has been made in view of such problems, and is capable of efficiently integrally forming pipes with various branch portions using synthetic resin while utilizing the advantages of the conventional pipe forming method using a floating core. With the goal.
- the manufacturing method of the pipe with a branch part of the present invention is A main cavity having a pressure port with a floating core at one end and a first outlet at the other end, and a branch cavity having a second outlet that communicates with the main cavity and can be opened and closed at the end.
- a step of extruding the molten resin from the second outlet with a pressurized fluid to form a branch pipe hollow portion It is characterized by having.
- both the main pipe portion and the branch pipe portion are curved pipes, they can be integrally formed. Moreover, since it shape
- FIG. 1 is a cross-sectional view showing an example of a pipe with a branched portion manufactured according to the present invention.
- the pipe with a branch portion manufactured according to the present invention includes a main pipe portion 9, a branch pipe portion 10, and a flange portion 16 provided as necessary.
- the main pipe portion 9 and the branch pipe portion 10 each have a main pipe portion 9, respectively.
- FIG. 2 is a cross-sectional view of a mold used for manufacturing the pipe with a branching portion in FIG. 2, 4 is a main cavity for molding the main pipe portion 9 shown in FIG. Although the gate 11 is opened in the main cavity 4 in FIG. 2, it can be provided at an arbitrary position such as a branch cavity 5 described later. Moreover, although the main pipe portion 9 and the branch pipe portion 10 in FIG. 2 are curved, they may be linear.
- a floating core 1 having a diameter corresponding to the inner diameter of the main pipe portion 9 is provided at one end of the main cavity 4, and pressurized fluid that presses and moves the floating core 1 to the other end side of the main cavity 4 is provided.
- a pressurizing port 2 for press-fitting is provided.
- the floating core 1 is provided in the main cavity 4 with the pressurizing port 2 on the back so that it can be pressed by the pressurizing fluid that is press-fitted from the pressurizing port 2.
- the pressurizing fluid that is press-fitted from the pressurizing port 2.
- a synthetic resin may be used as long as it does not melt and deform greatly during molding. Particularly, if it is made of synthetic resin, it can be easily pressed and moved without increasing the pressure of the pressurized fluid because of its light weight, and it is injected and comes into contact with the floating core 1 as compared with the case of metal. Is less susceptible to rapid cooling, which has the advantage of improving the inner surface state of the main pipe portion 9 on the pressure port 2 side.
- the shape of the floating core 1 may be, for example, a conical shape, a bullet shape, or a hemispherical shape as long as the maximum diameter corresponds to the inner diameter of the main pipe portion 9 in addition to the illustrated spherical shape.
- the pressurized port 2 is connected to a pressurized fluid system (not shown) for pressurizing and discharging pressurized fluid.
- the first discharge port 3 is provided at the other end of the main cavity 4, and the first discharge port 3 is connected to the first surplus resin housing cavity 12.
- the first discharge port 3 can be opened and closed by the first opening / closing means 13.
- a branch cavity 5 is provided at an arbitrary position of the main cavity 4 so as to communicate with the main cavity 4.
- This branch part cavity 5 forms the branch pipe part 10.
- a second discharge port 6 is provided at an end of the branch portion cavity 5, and the second discharge port 6 is connected to a second surplus resin housing cavity 15. The second outlet 6 can be opened and closed by the second opening / closing means 14.
- the branch cavity 5 is provided in a direction perpendicular to the main cavity 4.
- the branch cavity 5 can be inclined and provided at an arbitrary angle.
- the main pipe hollow portion 7 is formed by the movement of the floating core 1, and the branch pipe hollow portion 7 ′ is formed by a pressurized fluid press-fitted from the pressurized port 2.
- the molten resin is injected from the gate 11 with the first discharge port 3 and the second discharge port 6 closed, and the main cavity 4 and the branch cavity 5 are filled with the molten resin.
- the molten resin may be injected in such an amount that the inside of the main cavity 4 and the branch cavity 5 are almost filled. In this case, even if an unfilled part remains in the main cavity 4 or the branch part cavity 5, etc., it can be filled at the time of press-fitting of a pressurized fluid, which will be described later, and when the second discharge port is opened, the pressure is maintained. Can be formed by the mold 8 without the first opening / closing means 13.
- thermoplastic resins used for general injection molding and extrusion molding can be widely used, and a thermosetting resin can also be used as necessary.
- reinforcing fibers such as glass fibers, carbon fibers, and metal fibers, various fillers, additives, colorants, and the like can be added to these resins as necessary.
- the injection of the molten resin is performed by an injection machine in the same manner as normal injection molding.
- the injection pressure is the same as in ordinary injection molding, and varies depending on the type of resin used, the presence or absence of reinforcing fibers, and the amount added, but generally 4.90 to 19.61 MPa (50 to 200 kg / cm 2). )
- Injection of molten resin is performed while maintaining the state where the floating core 1 is positioned on the pressure port 2 side. This can be done, for example, by providing the gate 11 (see FIG. 2) closer to the first discharge port 3 than the floating core 1.
- the first discharge port 3 is opened, and pressurized fluid is press-fitted from the pressurized port 2 simultaneously with the opening or after a predetermined time has elapsed.
- a gas or liquid that does not react with or compatible with the resin used under the temperature and pressure of injection molding is used.
- nitrogen gas, carbon dioxide gas, air, glycerin, liquid paraffin and the like can be used, but inert gas such as nitrogen gas is preferable.
- the pressurization of the pressurized fluid is performed by introducing a pressurized gas such as nitrogen gas, which has been previously pressurized and stored in a pressure accumulating tank by a compressor, to the pressure port 2 through a pipe, This can be done by feeding the pressurized gas directly into the pressurized port 2 by the machine and increasing the pressure sequentially.
- the pressure of the pressurized gas supplied to the pressurized port 2 is usually about 4.90 to 29.42 MPa (50 to 300 kg / cm 2 G), although it varies depending on the type of resin used.
- the floating core 1 When the pressurized fluid is injected, the floating core 1 leaves the resin near the outer periphery of the main cavity 4 that has started to be cooled and solidified, and the molten resin at the central portion where cooling is delayed is transferred from the first discharge port 3 to the first excess resin. While pushing out into the storage cavity 12, it advances toward the first discharge port 3 side. After the floating core 1 passes, the main pipe hollow portion 7 having a diameter substantially equal to the diameter of the floating core 1 is formed. Therefore, the inner diameter of the main pipe portion 9 can be adjusted by selecting the diameter of the floating core 1.
- the resin at the location where the main pipe hollow portion 7 is formed is pressed against the peripheral wall surface of the main cavity 4 by the pressure of the pressurized fluid, and the shape thereof is maintained.
- the floating core 1 When the pressurization of the pressurized fluid is further advanced, as shown in FIG. 5, the floating core 1 reaches the position of the first discharge port 3, presses against the first discharge port 3, and closes it.
- the floating core 1 is pressed against the first discharge port 3, but the floating core 1 may not be pressed to the first discharge port 3.
- the case where the floating core 1 enters the first excess resin housing cavity 12 is also included.
- the diameter of the first discharge port 3 needs to be larger than the diameter of the floating core 1.
- the second discharge port 6 is opened while the pressurized fluid is being press-fitted from the pressurized port 2.
- the pressurized fluid leaves the resin near the outer periphery of the branch cavity 5 where cooling and solidification has started, and the molten resin at the center portion where cooling is delayed is transferred from the second discharge port 6 to the second. While pushing out to the surplus resin housing cavity 15, it advances toward the second discharge port 6 side. And after a pressurized fluid passes, branch pipe hollow part 7 'will be formed. In addition, by making the diameter of the branch part cavity 5 smaller than the maximum diameter of the floating core 1, the floating core 1 can be prevented from entering the branch part cavity 5.
- the branch section is formed at an appropriate angle so that the floating core 1 does not enter the traveling direction of the floating core 1 in the main cavity 4.
- the resin at the place where the branch pipe hollow portion 7 'is formed is pressed against the peripheral wall surface of the branch cavity 5 by the pressure of the pressurized fluid, and the shape thereof is maintained.
- the timing of opening the second discharge port 6 is not limited to after the floating core 1 reaches the first discharge port 3, but the main pipe hollow portion 7 reaches the portion where the branch portion cavity 5 communicates with the main cavity 4. After that, it may be at an arbitrary time until immediately before the central portion in the branch cavity 5 is solidified. As described above, when the diameter of the branch cavity 5 is made smaller than the maximum diameter of the floating core 1, the molten resin filled in the branch cavity 5 is melted in the main cavity 4. The resin may solidify faster than the resin, and it may be difficult for the pressurized fluid to enter the branch cavity 5 or to advance in the branch cavity 5.
- the main pipe hollow portion 7 reaches a portion where the branch cavity 5 communicates with the main cavity 4.
- the 2nd discharge port 6 may be open
- the release of the first outlet 3 and the release of the second outlet 6 are after the main cavity 4 and the branch cavity 5 are filled with the required amount of molten resin, Or it may be simultaneous and these releases may be controlled by a timer or the like.
- the pressurized fluid in the main pipe hollow part 7 and the branch pipe hollow part 7 ′ is discharged, and the molded product shown in FIG. 7 is taken out from the mold 8.
- the pressurized fluid can be discharged by opening the pressurized port 2 to the atmosphere.
- the pressurized fluid can be recovered and used in a recovery tank (not shown). It is preferable to do.
- the molded product 12 ′, 15 ′ made of surplus resin is integrated with the molded product taken out, but it is cut at the positions of the cutting lines 16, 17 to produce a pipe molded product with a branching portion shown in FIG. Can be obtained.
- the surplus resin moldings 12 'and 15' can be collected and used separately as necessary, such as pulverization or repelletization, to eliminate waste of resin.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
一端にフローティングコアを備えた加圧ポートを有し、他端に第一排出口を有する主キャビティ内と、該主キャビティに連通し、端部に開閉可能な第二排出口を有する分岐部キャビティ内に、溶融樹脂を射出した後、
前記加圧ポートから加圧流体を圧入して、前記フローティングコアを第一排出口側に移動させると共に該第一排出口から前記溶融樹脂を押出させ主パイプ中空部を形成せしめる工程と、
前記第二排出口から前記溶融樹脂を加圧流体にて押出させ分岐パイプ中空部を形成せしめる工程と、
を有することを特徴とする。
2 加圧ポート
3 第一排出口
4 主キャビティ
5 分岐部キャビティ
6 第二排出口
7 主パイプ中空部
7’ 分岐パイプ中空部
8 金型
9 主パイプ部
10 分岐パイプ部
11 ゲート
12 第一余剰樹脂収容キャビティ
13 第一開閉手段
14 第二開閉手段
15 第二余剰樹脂収容キャビティ
16,17 切断ライン
Claims (2)
- 一端にフローティングコアを備えた加圧ポートを有し、他端に第一排出口を有する主キャビティ内と、該主キャビティに連通し、端部に開閉可能な第二排出口を有する分岐部キャビティ内に、溶融樹脂を射出した後、
前記加圧ポートから加圧流体を圧入して、前記フローティングコアを第一排出口側に移動させると共に該第一排出口から前記溶融樹脂を押出させ主パイプ中空部を形成せしめる工程と、
前記第二排出口から前記溶融樹脂を加圧流体にて押出させ分岐パイプ中空部を形成せしめる工程と、
を有することを特徴とする分岐部付パイプの製造方法。 - 前記分岐パイプ中空部を形成せしめる工程は、前記主パイプ中空部が前記分岐部キャビティと主キャビティの連通部分に達した後に、第二排出口を開放して、該第二排出口から前記溶融樹脂を加圧流体にて押出させ分岐パイプ中空部を形成せしめる工程であることを特徴とする請求項1に記載の分岐部付パイプの製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800040009A CN102271891A (zh) | 2009-01-30 | 2010-01-21 | 带有分支部的管的制造方法 |
US13/147,156 US8709333B2 (en) | 2009-01-30 | 2010-01-21 | Method of manufacturing pipe with branch |
EP10735606.5A EP2384877B1 (en) | 2009-01-30 | 2010-01-21 | Method of manufacturing pipe with branch |
KR1020117013079A KR101511657B1 (ko) | 2009-01-30 | 2010-01-21 | 분기부 부착 파이프의 제조 방법 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-018999 | 2009-01-30 | ||
JP2009018999 | 2009-01-30 | ||
JP2009-174895 | 2009-07-28 | ||
JP2009174895A JP5242519B2 (ja) | 2009-01-30 | 2009-07-28 | 分岐部付パイプの製造方法 |
Publications (1)
Publication Number | Publication Date |
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WO2010087134A1 true WO2010087134A1 (ja) | 2010-08-05 |
Family
ID=42395399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/000332 WO2010087134A1 (ja) | 2009-01-30 | 2010-01-21 | 分岐部付パイプの製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8709333B2 (ja) |
EP (1) | EP2384877B1 (ja) |
JP (1) | JP5242519B2 (ja) |
KR (1) | KR101511657B1 (ja) |
CN (1) | CN102271891A (ja) |
MY (1) | MY152454A (ja) |
WO (1) | WO2010087134A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103269842A (zh) * | 2010-12-22 | 2013-08-28 | Rp东富丽株式会社 | 中空体成形装置 |
JP2021088123A (ja) * | 2019-12-04 | 2021-06-10 | いすゞ自動車株式会社 | 中空体の製造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102010015453B3 (de) * | 2010-04-17 | 2011-06-22 | Wittmann Battenfeld Gmbh | Vorrichtung und Verfahren zum Spritzgießen eines mindestens einen Hohlraum aufweisenden Formteils |
DE102010015452B3 (de) * | 2010-04-17 | 2011-06-09 | Wittmann Battenfeld Gmbh | Verfahren und Vorrichtung zum Spritzgießen eines Formteils |
DE102011100132B4 (de) | 2011-04-30 | 2020-07-23 | Vereinigung zur Förderung des Instituts für Kunststoffverarbeitung in Industrie und Handwerk an der Rhein.-Westf. Technischen Hochschule Aachen e.V. | Verfahren zur Herstellung polymererHohlkörper |
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Also Published As
Publication number | Publication date |
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KR20110118614A (ko) | 2011-10-31 |
MY152454A (en) | 2014-09-30 |
KR101511657B1 (ko) | 2015-04-13 |
EP2384877A4 (en) | 2012-05-30 |
JP2010195032A (ja) | 2010-09-09 |
JP5242519B2 (ja) | 2013-07-24 |
CN102271891A (zh) | 2011-12-07 |
EP2384877A1 (en) | 2011-11-09 |
US20110285057A1 (en) | 2011-11-24 |
EP2384877B1 (en) | 2018-03-07 |
US8709333B2 (en) | 2014-04-29 |
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