GB1125727A - Improvements in or relating to injection moulding machines - Google Patents

Improvements in or relating to injection moulding machines

Info

Publication number
GB1125727A
GB1125727A GB4813265A GB4813265A GB1125727A GB 1125727 A GB1125727 A GB 1125727A GB 4813265 A GB4813265 A GB 4813265A GB 4813265 A GB4813265 A GB 4813265A GB 1125727 A GB1125727 A GB 1125727A
Authority
GB
United Kingdom
Prior art keywords
closure member
stem
nozzle
mould
moulding
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
GB4813265A
Inventor
Ian Torrance Barrie
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4813265A priority Critical patent/GB1125727A/en
Priority to FR83382A priority patent/FR1500630A/en
Priority to SE1547466A priority patent/SE310258B/xx
Publication of GB1125727A publication Critical patent/GB1125727A/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
    • B29C45/20—Injection nozzles
    • B29C45/23—Feed stopping equipment
    • 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
    • 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)
  • Closures For Containers (AREA)

Abstract

1,125,727. Injection moulding machines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 Oct., 1966 [12 Nov., 1965], No. 48132/65. Heading B5A. The nozzle of an injection moulding machine is provided with a closure member 31 (Fig. 5) one end 30 of which lies flush with the end of the nozzle orifice and forms part of the mould surface when the closure member is in closed position, but extends into the mould cavity in the open position. The closure member may be of stepped form as shown at (6) in Fig. 1 (not shown), but is preferably cone-shaped as seen in the remaining Figures. The opening and closing of the closure member may be effected mechanically but may be effected by the pressure of the moulding material. The invention is applied to the moulding of e.g. baths, domes, wall claddings or car body panels. Many examples of moulding materials are given. First main embodiment, (Fig. 5)-Material is forced by a ram (not shown) into a mould cavity 27 through passages 13, channels 14, orifices 16, a chamber 15, and the space between the closure member and its seating 22. The body 11 of the nozzle is of hardened steel, a nose portion 17 of a beryllium/ copper alloy, and a collar portion 21 of stainless steel. The nose 17 is spaced from a mould portion 19 by a heat-insulating ring 18, and a ring 20 formed on the nose 17. Cooling pipes 23 and an electric band heater 25 are provided. A fork-ended lever 40 engages in a groove 39 in the end 38 of a stem 33 of the closure member and enables the stem 33 to be manually or mechanically moved. The lever may be used to indicate movement of the stem. The end 30 of the closure member may be provided with a vent plug (43), Fig. 6 (not shown). Second main embodiment, (Fig. 7)-The nozzle operates in a similar way to' that in Fig. 5. The mould 48, 49 is formed partly by the end of the nozzle. Moulding material is forced from a channel 69 by a ram or screw plunger, through a sleeve valve 71 and into chamber 59 containing the stem of the closure member 63. The stem may carry spiral flutes or vanes 66 and may be prevented from rotating or freely rotatable or rotated by drive means (not shown). Alternatively, vanes may be fixed to the walls of the chamber 59. Movement of valve 71 to closed position assists in keeping the closure member closed. The limits of longitudinal movement of the closure member 63 may be adjustable by means of a worm 91 and a worm wheel 90 mounted on a screwthreaded cylinder 94.
GB4813265A 1965-11-12 1965-11-12 Improvements in or relating to injection moulding machines Expired GB1125727A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4813265A GB1125727A (en) 1965-11-12 1965-11-12 Improvements in or relating to injection moulding machines
FR83382A FR1500630A (en) 1965-11-12 1966-11-10 Improvements to injection molding machines to eliminate weights
SE1547466A SE310258B (en) 1965-11-12 1966-11-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4813265A GB1125727A (en) 1965-11-12 1965-11-12 Improvements in or relating to injection moulding machines

Publications (1)

Publication Number Publication Date
GB1125727A true GB1125727A (en) 1968-08-28

Family

ID=10447501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4813265A Expired GB1125727A (en) 1965-11-12 1965-11-12 Improvements in or relating to injection moulding machines

Country Status (2)

Country Link
GB (1) GB1125727A (en)
SE (1) SE310258B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011805A1 (en) * 1978-12-05 1980-06-11 Osaka City Valve nozzle for an injection molding machine
EP0051252A2 (en) * 1980-10-31 1982-05-12 Discovision Associates Hot sprue valve assembly for an injection molding machine
GB2167339B (en) * 1984-10-17 1989-07-12 Shigeru Tsutsumi Small-sized and precision injection molding apparatus
EP0402503A1 (en) * 1989-06-02 1990-12-19 Jobst Ulrich Gellert Injection molding system having valve member split ring
EP0402500A1 (en) * 1989-01-03 1990-12-19 Jobst Ulrich Gellert Injection molding system having offset valve pin biasing mechanism
EP0628394A1 (en) * 1993-06-10 1994-12-14 Idemitsu Petrochemical Co. Ltd. Injection molding die
WO2002032643A1 (en) * 2000-10-19 2002-04-25 Infiltrator Systems, Inc. Gate flow diverter, mold for use therewith; and method for use thereof
US8062025B2 (en) 2008-12-19 2011-11-22 Mold-Masters (2007) Limited Injection molding apparatus having a rotating vane

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011805A1 (en) * 1978-12-05 1980-06-11 Osaka City Valve nozzle for an injection molding machine
EP0051252A2 (en) * 1980-10-31 1982-05-12 Discovision Associates Hot sprue valve assembly for an injection molding machine
EP0051252A3 (en) * 1980-10-31 1983-04-20 Discovision Associates Hot sprue valve assembly for an injection molding machine
GB2167339B (en) * 1984-10-17 1989-07-12 Shigeru Tsutsumi Small-sized and precision injection molding apparatus
EP0402500A1 (en) * 1989-01-03 1990-12-19 Jobst Ulrich Gellert Injection molding system having offset valve pin biasing mechanism
EP0402503A1 (en) * 1989-06-02 1990-12-19 Jobst Ulrich Gellert Injection molding system having valve member split ring
EP0628394A1 (en) * 1993-06-10 1994-12-14 Idemitsu Petrochemical Co. Ltd. Injection molding die
WO2002032643A1 (en) * 2000-10-19 2002-04-25 Infiltrator Systems, Inc. Gate flow diverter, mold for use therewith; and method for use thereof
US8062025B2 (en) 2008-12-19 2011-11-22 Mold-Masters (2007) Limited Injection molding apparatus having a rotating vane

Also Published As

Publication number Publication date
SE310258B (en) 1969-04-21

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