GB1307865A - Injection molding machine - Google Patents

Injection molding machine

Info

Publication number
GB1307865A
GB1307865A GB3189870A GB3189870A GB1307865A GB 1307865 A GB1307865 A GB 1307865A GB 3189870 A GB3189870 A GB 3189870A GB 3189870 A GB3189870 A GB 3189870A GB 1307865 A GB1307865 A GB 1307865A
Authority
GB
United Kingdom
Prior art keywords
chamber
pressure
mould
platen
charge
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.)
Expired
Application number
GB3189870A
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.)
Mitsubishi Petrochemical Co Ltd
Original Assignee
Mitsubishi Petrochemical Co 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 Mitsubishi Petrochemical Co Ltd filed Critical Mitsubishi Petrochemical Co Ltd
Publication of GB1307865A publication Critical patent/GB1307865A/en
Expired 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
    • 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
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
    • 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
    • B29C45/70—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices
    • 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
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2882—Closure devices therefor consisting of needle valve systems closing by a movement in the counterflow direction

Landscapes

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

Abstract

1307865 Injection moulding machines MITSUBISHI PETROCHEMICAL CO Ltd and S MATSUDA 1 July 1970 [11 July 1969] 31898/70 Heading B5A An injection moulding machine comprises an injection plunger 81 operated by a ram 9 in a cylinder 1 connected to a high pressure chamber 4, and means 6 for applying a pressure on the other side of the ram to retract it and make room in an accumulator chamber 11 for a charge of molten plastics material, this charge being injected through a nozzle 17 (Fig. 1) and valve means 16 into a mould 36, 41 by relieving the pressure applied by the means 6. The ram housing 1 and chamber 4 are sealed and filled with gas and oil under pressure. The charge of plastics material is supplied to the chamber 11 by a reciprocable screw 18 in a heating chamber 59. Fig. 2 shows a modified enbodiment in which the mould cavity 35 is enlarged to allow injected material to foam, by reducing the pressure in a chamber 44 of a movable cylinder 39 connected to male mould member 41. Movement of mould member 41 relative to a platen. 42 is limited by adjustable nuts 51, 52 on studs 45. Initial closing of the mould is effected by cylinders 53 which drive the studs 45. Final clamping is effected by pressure fluid introduced into the chamber 44 after locking of the platen 42. This locking is done by means of a split nut 57 operated by cylinders 56 to engage a threaded portion 55 of a shaft 43 fixed to platen 42. The injection nozzle 23 is detachably fitted on a partspherical tip 82 on the injection device. The nozzle has outlet and inlet openings 25, 26 (Fig. 3) closable by valves 27, 28 respectively. The valves are integrally connected by a shaft 24 which is connected to a lever 32 operated by rams 33, 34.
GB3189870A 1969-07-11 1970-07-01 Injection molding machine Expired GB1307865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5455769 1969-07-11

Publications (1)

Publication Number Publication Date
GB1307865A true GB1307865A (en) 1973-02-21

Family

ID=12973975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3189870A Expired GB1307865A (en) 1969-07-11 1970-07-01 Injection molding machine

Country Status (3)

Country Link
DE (1) DE2034163A1 (en)
FR (1) FR2054972A5 (en)
GB (1) GB1307865A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710779C2 (en) * 1977-03-11 1982-03-11 Státní výzkumný ústav materiálu, Praha Injection device for injection molding of thermoplastics or rubber compounds
US4340353A (en) * 1980-10-31 1982-07-20 Discovision Associates Hot sprue valve assembly for an injection molding machine
JP2928750B2 (en) * 1995-09-27 1999-08-03 日精樹脂工業株式会社 Packing method in injection molding
US6585505B2 (en) 1998-04-21 2003-07-01 Synventive Molding Solutions, Inc. Machine for proportionally controlling fluid delivery to a mold
US6309208B1 (en) 1997-06-13 2001-10-30 Synventive Molding Solutions, Inc. Apparatus for proportionally controlling fluid delivery to a mold
US6464909B1 (en) 1998-04-21 2002-10-15 Synventive Molding Solutions, Inc. Manifold system having flow control
US6287107B1 (en) 1997-09-02 2001-09-11 Synventive Molding Solutions, Inc. Apparatus for proportionally controlling fluid delivery to a mold
US6638049B1 (en) 1997-06-13 2003-10-28 Synventive Molding Solutions, Inc. Apparatus and method for proportionally controlling fluid delivery to readily replaceable mold inserts
US6632079B1 (en) 1998-04-21 2003-10-14 Synventive Molding Solutions, Inc. Dynamic feed control system
US6361300B1 (en) 1998-04-21 2002-03-26 Synventive Molding Solutions, Inc. Manifold system having flow control
US6514440B1 (en) 1998-04-21 2003-02-04 Synventive Molding Solutions, Inc. Apparatus and method for purging injection molding system
US6589039B1 (en) 1998-04-21 2003-07-08 Synventive Molding Solutions, Inc. Controlled injection using manifold having multiple feed channels
US7029268B2 (en) 2001-12-26 2006-04-18 Synventive Molding Solutions, Inc. Non-coaxial injection molding valve flow control
US6824379B2 (en) 1998-04-21 2004-11-30 Synventive Molding Solutions, Inc. Apparatus for utilizing an actuator for flow control valve gates
US7234929B2 (en) 1999-09-21 2007-06-26 Synventive Molding Solutions, Inc. Injection molding flow control apparatus and method
US6683283B2 (en) 2002-05-10 2004-01-27 Dynisco Hot Runners Inc. Canada Apparatus and method for heating injection molding fluid

Also Published As

Publication number Publication date
FR2054972A5 (en) 1971-05-07
DE2034163A1 (en) 1971-02-11

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed