GB1166472A - An apparatus for Injection Moulding - Google Patents

An apparatus for Injection Moulding

Info

Publication number
GB1166472A
GB1166472A GB2481966A GB2481966A GB1166472A GB 1166472 A GB1166472 A GB 1166472A GB 2481966 A GB2481966 A GB 2481966A GB 2481966 A GB2481966 A GB 2481966A GB 1166472 A GB1166472 A GB 1166472A
Authority
GB
United Kingdom
Prior art keywords
injection
sleeve
piston
fluid
cylinders
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
GB2481966A
Inventor
Robert Nouel
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.)
Inventions Finance Corp
Original Assignee
Inventions Finance Corp
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 Inventions Finance Corp filed Critical Inventions Finance Corp
Priority to GB2481966A priority Critical patent/GB1166472A/en
Publication of GB1166472A publication Critical patent/GB1166472A/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
    • B29C45/46—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
    • B29C45/532—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston using a hollow injection ram co-operating with a coaxial 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
    • B29C45/46—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
    • B29C45/532—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston using a hollow injection ram co-operating with a coaxial screw
    • B29C2045/533—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston using a hollow injection ram co-operating with a coaxial screw using a continuously rotating plasticising screw

Landscapes

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

Abstract

1,166,472. Injection moulding machines. INVENTIONS FINANCE CORP. 3 Sept., 1966, No. 24819/66. Addition to 1,075,801. Heading B5A. In an injection moulding apparatus an injection piston 18 extends into an injection chamber 14 and contains a transfer chamber 23 to which moulding material is continuously fed, the material being transferred therefrom by a piston 20 into the injection chamber 14 through a non-return valve 24. The injection piston 18 comprises a sleeve and is moved to the injection-completed position seen in Fig. 2 (not shown) by pistons 41 acting on lateral extensions 38, 39 thereof. After injection and during cooling, a feed screw 22 continues to feed material to the transfer chamber 23 until a pressure build-up forces the piston 20 therefrom (Fig. 3, not shown), the non-return valve closure member 31 remaining seated on the end of the sleeve 18. Fluid is then admitted to cylinders 46, thereby withdrawing rods 48 and the sleeve 18 attached thereto (Fig. 4, not shown). Simultaneously fluid is exhausted from the cylinders 40, the screw 22 continues to rotate and material is transferred through passages 32 in a head part 29 of the valve into the injection chamber. When the sleeve 18 has withdrawn fully (Fig. 1) injection is initiated by evacuating fluid from the cylinders 46 and supplying fluid to the cylinders 40. During injection the sleeve 18 affords a seating for the complementarily shaped end of the valve member 31. The injection orifice may be provided with a regulator valve 100 (Fig. 8) comprising a cylindrical housing 101, a nozzle 102 and a needle valve closure 103, a central bore 104 thereof opening into the injection chamber 14, a point 106 of the needle valve closing the nozzle 102. An hydraulically operated lever 108 pivoted at 109 acts on a shoulder 107 of the needle to regulate the passage of material through the nozzle 102. The lever is acted on by a piston 110 in a regulator cylinder 111 supplied with pressure fluid through a conduit 112.
GB2481966A 1966-09-03 1966-09-03 An apparatus for Injection Moulding Expired GB1166472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2481966A GB1166472A (en) 1966-09-03 1966-09-03 An apparatus for Injection Moulding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2481966A GB1166472A (en) 1966-09-03 1966-09-03 An apparatus for Injection Moulding

Publications (1)

Publication Number Publication Date
GB1166472A true GB1166472A (en) 1969-10-08

Family

ID=10217727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2481966A Expired GB1166472A (en) 1966-09-03 1966-09-03 An apparatus for Injection Moulding

Country Status (1)

Country Link
GB (1) GB1166472A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697464A1 (en) * 1992-10-30 1994-05-06 Kloeckner Ferromatik Desma Injection unit for injection molding machines.
DE10018542A1 (en) * 2000-04-14 2001-10-18 Krauss Maffei Kunststofftech Injection machine for molding plastics or metals has a screw plasticizing unit which moves axially in the injection piston

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697464A1 (en) * 1992-10-30 1994-05-06 Kloeckner Ferromatik Desma Injection unit for injection molding machines.
DE10018542A1 (en) * 2000-04-14 2001-10-18 Krauss Maffei Kunststofftech Injection machine for molding plastics or metals has a screw plasticizing unit which moves axially in the injection piston
US7160102B2 (en) 2000-04-14 2007-01-09 Krauss-Maffei Kunststofftechnik Gmbh Injection unit for injection molding machines with continuously operating plasticizing unit
US7172407B2 (en) 2000-04-14 2007-02-06 Krauss-Maffei Kunststofftechnik Gmbh Injection unit for injection molding machines with continuously operating plasticizing unit
US7815838B2 (en) 2000-04-14 2010-10-19 Kraussmaffei Technologies Gmbh Method of operating an injection molding machine with continuously operating plasticizing unit

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees