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IE40647B1 - Moulding apparatus - Google Patents

Moulding apparatus

Info

Publication number
IE40647B1
IE40647B1 IE168274A IE168274A IE40647B1 IE 40647 B1 IE40647 B1 IE 40647B1 IE 168274 A IE168274 A IE 168274A IE 168274 A IE168274 A IE 168274A IE 40647 B1 IE40647 B1 IE 40647B1
Authority
IE
Ireland
Prior art keywords
mould
core
halves
casing
cavities
Prior art date
Application number
IE168274A
Original Assignee
Dunlop 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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of IE40647B1 publication Critical patent/IE40647B1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006Joining parts moulded in separate cavities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006Joining parts moulded in separate cavities
    • B29C2045/0072Joining parts moulded in separate cavities the parts to be joined being moulded in a stack mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Tyre Moulding (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

1469110 Moulding rubber articles DUNLOP Ltd 2 Aug 1974 [14 Aug 1973] 38338/73 Heading B5A Article parts of uncured rubber, e.g. annular halves of a tyre inner tube, are formed in the opposed cavities of mould halves 3, 7 in association with a core assembly 27-29, which halves are then brought together, after removing the core, to join and cure the parts. Grooves 14a, 14b, 15a, 15b in the mould halves receive uncured rubber during the injection of the rubber into the cavities and prevent the displacement of the parts on mould opening and core removal. The mould is pressurized with gas during the moulding by a casing 9 vertically movable to a position to enclose the cavities and to a retracted position wherein the cavities are accessible. The mould halves are located in a press 1, 2 provided with opposed heat sinks 4, 8; the lower mould half and heat sink are vertically movable by rams. The casing has seals 21-24 which slidably engage cylindrical sleeves 10-13 surrounding the mould halves and heat sinks when the casing is raised to its operative position by a ram. In operation, the core is located between the heat sinks, with its parts 28, 29, spaced from the part 27, Fig. 5, where a transfer chamber 32 receives a measured supply of rubber from an injection screw 5. During this time the formers 30, 31 of the core are cooled by the heat sinks. The latter are then separated and the core lowered and fed to between the mould halves; such feeding is effected by a carriage supported by the casing which is raised. The mould halves are then urged together, Fig. 6, forcing the uncured rubber from the transfer chamber through passages 35, 36 into the mould cavities and grooves. During this period the casing is pressurized. The mould halves are heated by steam circulation through passages 39, 40 when the core is removed and the mould halves brought together to join and cure the moulded parts. [GB1469110A]
IE168274A 1973-08-14 1974-08-12 Moulding apparatus IE40647B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3833873A GB1469110A (en) 1973-08-14 1973-08-14 Moudling apparatus

Publications (1)

Publication Number Publication Date
IE40647B1 true IE40647B1 (en) 1979-07-18

Family

ID=10402824

Family Applications (1)

Application Number Title Priority Date Filing Date
IE168274A IE40647B1 (en) 1973-08-14 1974-08-12 Moulding apparatus

Country Status (9)

Country Link
JP (1) JPS6033658B2 (en)
BE (1) BE818762A (en)
DE (1) DE2439091C2 (en)
DK (1) DK431374A (en)
FR (1) FR2240809B2 (en)
GB (1) GB1469110A (en)
IE (1) IE40647B1 (en)
LU (1) LU70723A1 (en)
NL (1) NL176844C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1535323A (en) * 1975-03-20 1978-12-13 Dunlop Ltd Method and apparatus for moulding pneumatic tyres
JPS5319387A (en) * 1976-08-06 1978-02-22 Mitsubishi Heavy Ind Ltd Method of forming breaker layer of radial tire
JPS6451871U (en) * 1987-09-26 1989-03-30

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE296490C (en) *
GB1367084A (en) * 1970-11-23 1974-09-18 Dunlop Ltd Method moulding and apparatus therefor

Also Published As

Publication number Publication date
JPS5076185A (en) 1975-06-21
NL176844B (en) 1985-01-16
FR2240809A2 (en) 1975-03-14
LU70723A1 (en) 1974-12-10
BE818762A (en) 1974-12-02
NL7410724A (en) 1975-02-18
NL176844C (en) 1985-06-17
DE2439091C2 (en) 1983-05-19
JPS6033658B2 (en) 1985-08-03
DK431374A (en) 1975-04-14
GB1469110A (en) 1977-03-30
DE2439091A1 (en) 1975-02-27
AU7234174A (en) 1976-02-26
FR2240809B2 (en) 1976-10-22

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