JPS57170734A - Method and apparatus for molding rim urethane in center injection system - Google Patents

Method and apparatus for molding rim urethane in center injection system

Info

Publication number
JPS57170734A
JPS57170734A JP5556481A JP5556481A JPS57170734A JP S57170734 A JPS57170734 A JP S57170734A JP 5556481 A JP5556481 A JP 5556481A JP 5556481 A JP5556481 A JP 5556481A JP S57170734 A JPS57170734 A JP S57170734A
Authority
JP
Japan
Prior art keywords
mold
mixer
molding
cavity
plunger
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.)
Pending
Application number
JP5556481A
Other languages
Japanese (ja)
Inventor
Yoshihisa Hosoe
Hiromichi Hiramatsu
Hiroshi Kaneko
Susumu Tsujiku
Yasuo Hiyoshi
Kenichi Waratani
Masao Goto
Ataru Yokono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5556481A priority Critical patent/JPS57170734A/en
Publication of JPS57170734A publication Critical patent/JPS57170734A/en
Pending legal-status Critical Current

Links

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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/005—Compensating volume or shape change during moulding, in general
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0061—Moulds or cores; Details thereof or accessories therefor characterised by the configuration of the material feeding channel
    • B29C33/0072—Moulds or cores; Details thereof or accessories therefor characterised by the configuration of the material feeding channel with a configuration promoting turbulency, e.g. for after-mixing in the mould
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a molding with high dimensional and superficial precision by a method wherein an after-mixer mold consisting of an upper and a lower molds is provided on the upper surface of an upper mold and raw liquid is supplied from the middle into a mold cavity through a mixer head and the after-mixer. CONSTITUTION:The plunger 11 of a mold controlling mechanism 10 is set at the 1st position according to the display of a sensor 13 and the primary liquid is supplied from the upper part in the middle of the mold cavity 8 through the mixer head 3 formed on the upper mold 4 of the aftermixer, the after-mixer 20 formed on the lower mold 5 of the after-mixer and an injecting gate 7. Subsequently, the plunger 11 is set at the 2nd position, an air vent 12 equipped on the upper mold 4 and the cavity 8 are connected through the gate 7 and gas generated in the cavity 8 is exhausted from an air vent 30. After then, the plunger 11 is set at the 3rd position, the molding is filled with packing and part of the molding is restrained from leaking from the cavity 8 into the gate 7 and after a preset mold releasing time the molds are opened to take out the molding.
JP5556481A 1981-04-15 1981-04-15 Method and apparatus for molding rim urethane in center injection system Pending JPS57170734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5556481A JPS57170734A (en) 1981-04-15 1981-04-15 Method and apparatus for molding rim urethane in center injection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5556481A JPS57170734A (en) 1981-04-15 1981-04-15 Method and apparatus for molding rim urethane in center injection system

Publications (1)

Publication Number Publication Date
JPS57170734A true JPS57170734A (en) 1982-10-21

Family

ID=13002194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5556481A Pending JPS57170734A (en) 1981-04-15 1981-04-15 Method and apparatus for molding rim urethane in center injection system

Country Status (1)

Country Link
JP (1) JPS57170734A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157819A (en) * 1983-12-12 1985-08-19 シエラ−　グロウブ　コ−ポレ−シヨン Method of coupling urethane material with glass member and method of molding urethane window gasket member and couplingsaid gasket member with window panel peripheral section
JPS61213112A (en) * 1985-03-19 1986-09-22 Nippon Plast Co Ltd Reaction injection molding method
JP2007075295A (en) * 2005-09-13 2007-03-29 Pharos:Kk Acupuncture implement
WO2007045357A1 (en) * 2005-10-18 2007-04-26 Bayer Materialscience Ag Mould for the production of plastic mouldings by the reaction injection-moulding process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157819A (en) * 1983-12-12 1985-08-19 シエラ−　グロウブ　コ−ポレ−シヨン Method of coupling urethane material with glass member and method of molding urethane window gasket member and couplingsaid gasket member with window panel peripheral section
JPS61213112A (en) * 1985-03-19 1986-09-22 Nippon Plast Co Ltd Reaction injection molding method
JP2007075295A (en) * 2005-09-13 2007-03-29 Pharos:Kk Acupuncture implement
WO2007045357A1 (en) * 2005-10-18 2007-04-26 Bayer Materialscience Ag Mould for the production of plastic mouldings by the reaction injection-moulding process

Similar Documents

Publication Publication Date Title
CA2077445A1 (en) Method and apparatus for injection molding plastic articles with gas assistance
JPS57117938A (en) Two-color molding method
AU5533886A (en) Method of and apparatus for manufacturing foundry molds
JPS57170734A (en) Method and apparatus for molding rim urethane in center injection system
JPS55146718A (en) Intermediate blank made of synthetic resin for molding biaxially spread bottle
ATE121001T1 (en) DEVICE FOR SHAPING A LIQUID, CURED MATERIAL.
JPS5517569A (en) Method and structure for prevention of drooling in injection molding die
JPS57178734A (en) Automatically changing and supplying method for coloring material in injection molding
GB1328872A (en) Method of forming a thermoplastic article
JPS57156861A (en) Molding method for sand mold
JPS56121745A (en) Foaming resin injection molding method
JPS5573443A (en) Gas venting method of casting mold and gas vent member
JPS576732A (en) Method of molding synthetic resin formed component
JPS6411813A (en) Method and apparatus for reaction injection molding
JPS57105323A (en) Method for molding synthetic resin
CA2002007A1 (en) Injection molding apparatus and method
JPS5769027A (en) Method of controlling removing time from mold in rim molding and apparatus therefor
JPS57201633A (en) Foamed molding method
Ohtsuka et al. Computer simulation system of molten metal flow in die casting
JPS56133068A (en) Apparatus for automatically building up adhesive on glass
JPS5574848A (en) Method of providing hole in synthetic resin mold product
GB1489462A (en) Process for moulding thin-walled products
JPS56159137A (en) Molding method for panel material molded with 2-layer resin
JPS5619962A (en) Filling method of molten metal in vertical die casting machine
JPS57103777A (en) Production of molding of solution quenched material