GB1375838A – – Google Patents
GB1375838A – – Google Patents
Info
Publication number
GB1375838A
GB1375838A
GB573671A
GB573671A
GB1375838A
GB 1375838 A
GB1375838 A
GB 1375838A
GB 573671 A
GB573671 A
GB 573671A
GB 573671 A
GB573671 A
GB 573671A
GB 1375838 A
GB1375838 A
GB 1375838A
Authority
GB
United Kingdom
Prior art keywords
mould
series
elements
chamber
cavities
Prior art date
1971-03-01
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
GB573671A
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.)
1971-03-01
Filing date
1971-03-01
Publication date
1974-11-27
1971-03-01
Application filed
filed
Critical
1971-03-01
Priority to GB573671A
priority
Critical
patent/GB1375838A/en
1972-02-24
Priority to CA135,653A
priority
patent/CA982764A/en
1972-02-28
Priority to DE19722209313
priority
patent/DE2209313A1/en
1972-02-28
Priority to NL7202545A
priority
patent/NL7202545A/xx
1972-02-28
Priority to US00229839A
priority
patent/US3809518A/en
1972-02-29
Priority to IT67637/72A
priority
patent/IT953938B/en
1972-02-29
Priority to FR7206861A
priority
patent/FR2128416B1/fr
1972-03-01
Priority to SE02615/72A
priority
patent/SE367568B/xx
1974-01-21
Priority to US435315A
priority
patent/US3914370A/en
1974-11-27
Publication of GB1375838A
publication
Critical
patent/GB1375838A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B29C45/03—Injection moulding apparatus
B29C45/04—Injection moulding apparatus using movable moulds or mould halves
Abstract
1375838 Injection moulding apparatus GKN GROUP SERVICES Ltd 23 Feb 1972 [1 March 1971] 5736/71 Heading B5A Apparatus for moulding preforms etc., comprises means 75 for feeding fluid material into an accumulator chamber 68, means for varying the volume of the chamber 68 while maintaining material therein under a desired pressure, a series of intercommunicating mould cavities 37-47, means for causing relative movement between a nozzle 69 for the chamber 68 and the series so as to enable a mould to be moved from the output end of the series, emptied and inserted at the input end and then brought into engagement with the nozzle. Moulding material is thus forced into the mould cavities to take up shrinkage as the material solidifies. The accumulator chamber 68 contains a ram 67 operated by a single acting hydraulic ram 78. When fluid material is being fed by the feed means 75 to the accumulator chamber 68 the ram 67 is moved upwardly against the resistance offered by an hydraulic restrictor 88. A nozzle valve 70 is opened and closed when the nozzle is engaged with and disengaged from the moulds. The mould cavities are provided by a plurality of centrally apertured plate-like elements 35 interleaved with a plurality of ring-like elements 36, and housed in a guide 23. The elements 35, 36 have passages 51, 52 respectively therein to receive heating and cooling fluid. The elements 35, 36 defining cavities 38-14 are water cooled and the elements defining cavities 45, 46 are heated by warm air. The mould guide 23 is guided for vertical movement by means of slides 11a and mounted on a table 14 which can be raised and lowered by means of an hydraulic jack 20 and toggle arms 15. Removal of a filled mould from the lower end of the series is effected by an hydraulic jack 55 which pushes the mould on to a platform 63 having an opening 64 through which the moulded article can drop. A pair of pneumatic rams (62), Fig. 2, (not shown), are operated to lift the stack of mould elements slightly as soon as the mould being removed has moved clear of these rams. An insertion platform 65 having a removable heating jacket 66 may be connected to the platform 63 by an endless belt or the like (not shown). Fluid pressure admitted to a cavity 33 acts on a piston 27 which presses the mould elements 35, 36 together and against the table 14. Modifications.-The feed of material to the accumulator chamber may be shut off during the provision of an empty mould cavity at the input end of the series. Two accumulator chambers and two series of mould cavities fed from a single feed means may be provided, material being fed into one chamber while the other is disconnected from its series.
GB573671A
1971-03-01
1971-03-01
Expired
GB1375838A
(en)
Priority Applications (9)
Application Number
Priority Date
Filing Date
Title
GB573671A
GB1375838A
(en)
1971-03-01
1971-03-01
CA135,653A
CA982764A
(en)
1971-03-01
1972-02-24
Production of bodies from synthetic plastics material
DE19722209313
DE2209313A1
(en)
1971-03-01
1972-02-28
Method and device for the production of plastic bodies with the aid of a group of interconnected molds
NL7202545A
NL7202545A
(en)
1971-03-01
1972-02-28
US00229839A
US3809518A
(en)
1971-03-01
1972-02-28
Production of bodies from synthetic plastics materials
IT67637/72A
IT953938B
(en)
1971-03-01
1972-02-29
PROCEDURE AND APPARATUS FOR THE MANUFACTURE OF BODIES OF SYNTHETIC PLASTIC MATERIALS
FR7206861A
FR2128416B1
(en)
1971-03-01
1972-02-29
SE02615/72A
SE367568B
(en)
1971-03-01
1972-03-01
US435315A
US3914370A
(en)
1971-03-01
1974-01-21
Production of bodies from synthetic plastics material
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB573671A
GB1375838A
(en)
1971-03-01
1971-03-01
Publications (1)
Publication Number
Publication Date
GB1375838A
true
GB1375838A
(en)
1974-11-27
Family
ID=9801674
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB573671A
Expired
GB1375838A
(en)
1971-03-01
1971-03-01
Country Status (8)
Country
Link
US
(1)
US3809518A
(en)
CA
(1)
CA982764A
(en)
DE
(1)
DE2209313A1
(en)
FR
(1)
FR2128416B1
(en)
GB
(1)
GB1375838A
(en)
IT
(1)
IT953938B
(en)
NL
(1)
NL7202545A
(en)
SE
(1)
SE367568B
(en)
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3941529A
(en)
*
1970-06-01
1976-03-02
Union Carbide Corporation
Apparatus for forming thermoplastic articles
FR2196892B1
(en)
*
1972-08-23
1975-09-12
Raffinage Cie Francaise
US5047195A
(en)
*
1988-09-15
1991-09-10
Moertel George B
Method of making a molded article
EP1844916B1
(en)
*
2006-04-12
2014-06-25
ENGEL AUSTRIA GmbH
Device for expansion injection moulding
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2663905A
(en)
*
1951-09-06
1953-12-29
Us Rubber Co
Superimposed multiple cavity mold
CH415019A
(en)
*
1963-06-13
1966-06-15
Solvay
Manufacturing process of hollow body and device for its implementation
FR1395805A
(en)
*
1964-03-06
1965-04-16
Telecommunications Sa
Device for manufacturing insulated conductors for coaxial pairs and symmetrical circuits
US3719441A
(en)
*
1970-06-22
1973-03-06
Allied Chem
Apparatus for molding articles
1971
1971-03-01
GB
GB573671A
patent/GB1375838A/en
not_active
Expired
1972
1972-02-24
CA
CA135,653A
patent/CA982764A/en
not_active
Expired
1972-02-28
US
US00229839A
patent/US3809518A/en
not_active
Expired – Lifetime
1972-02-28
NL
NL7202545A
patent/NL7202545A/xx
unknown
1972-02-28
DE
DE19722209313
patent/DE2209313A1/en
active
Pending
1972-02-29
FR
FR7206861A
patent/FR2128416B1/fr
not_active
Expired
1972-02-29
IT
IT67637/72A
patent/IT953938B/en
active
1972-03-01
SE
SE02615/72A
patent/SE367568B/xx
unknown
Also Published As
Publication number
Publication date
SE367568B
(en)
1974-06-04
FR2128416B1
(en)
1975-10-24
FR2128416A1
(en)
1972-10-20
IT953938B
(en)
1973-08-10
CA982764A
(en)
1976-02-03
NL7202545A
(en)
1972-09-05
US3809518A
(en)
1974-05-07
DE2209313A1
(en)
1972-09-14
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Legal Events
Date
Code
Title
Description
1975-04-09
PS
Patent sealed [section 19, patents act 1949]
1980-10-08
PCNP
Patent ceased through non-payment of renewal fee
