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GB1117942A - Improvements in or relating to sealing rings - Google Patents

Improvements in or relating to sealing rings

Info

Publication number
GB1117942A
GB1117942A GB4036964A GB4036964A GB1117942A GB 1117942 A GB1117942 A GB 1117942A GB 4036964 A GB4036964 A GB 4036964A GB 4036964 A GB4036964 A GB 4036964A GB 1117942 A GB1117942 A GB 1117942A
Authority
GB
United Kingdom
Prior art keywords
gates
core
moulding
mould
rubber
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
GB4036964A
Inventor
Raymond Charles Carter
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.)
Hepworth Iron Co Ltd
Original Assignee
Hepworth Iron 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 Hepworth Iron Co Ltd filed Critical Hepworth Iron Co Ltd
Priority to GB4036964A priority Critical patent/GB1117942A/en
Publication of GB1117942A publication Critical patent/GB1117942A/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
    • B29C45/2616—Moulds having annular mould cavities
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • 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
    • B29C45/38—Cutting-off equipment for sprues or ingates
    • B29C45/382—Cutting-off equipment for sprues or ingates disposed outside the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
    • B29L2031/265—Packings, Gaskets

Landscapes

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

Abstract

1,117,942. Injection moulding sealing rings. HEPWORTH IRON CO. Ltd. 3 Jan., 1966 [3 Oct., 1964], No. 40369/64. Heading B5A. A moulding comprising a succession of synthetic rubber 0-rings spaced apart by integral thin connecting portions is made by injection moulding, the moulding is removed from the mould and the connecting portions are severed to separate the rings. The method comprises the steps of bringing together two longitudinally parting mould halves 1 urged to the open position by springs 21 and carried on one platen of an injection machine by a mounting plate (4) having a central bore (6) which locates a spigot (7) of a core 8, while mounted on the other platen (not shown) is a mounting plate 14 seating a core 11 having a spigot (12) and central bore 25. As the platens move together dowels 18 enter holes (17) in the plate (4) before diverging dowels 19 enter corresponding holes 20 in the mould halves 1 to close these about the cores 8, 11. A central nozzle-receiving sprue (24) in a locking plate 16 connects with the bore 25 which leads by central, radial passages 26 in the end of core(s) 11 to four gates (27) circumferentially spaced round an 0-ring forming cavity 28 which is connected at each side to a similar cavity 28A by four gates 29 radially offset with respect to the gates (27). Likewise cavities 28B, 28C are connected by gates 29A, 29B each radially offset with respect to the preceding one(s) so that all the rubber to a given cavity unites prior to passing to the next. The last cavities 28C in each core are connected by gates 29C to overflow cavities 30. After injection, the rubber is cured by heaters in the mould or cores, the mould is then opened, the moulding staying on the core 11 from which it is subsequently manually stripped. Each 0-ring 33 is separated by cutting knives or wires. In a modification (Fig. 6, not shown) the 0-rings are connected by relatively thin tubular portions (36) which may be severed by smashing after freezing with solid carbon dioxide. The cores may be collapsible or expansible, while the rubber is butyl or like synthetic rubber.
GB4036964A 1964-10-03 1964-10-03 Improvements in or relating to sealing rings Expired GB1117942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4036964A GB1117942A (en) 1964-10-03 1964-10-03 Improvements in or relating to sealing rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4036964A GB1117942A (en) 1964-10-03 1964-10-03 Improvements in or relating to sealing rings

Publications (1)

Publication Number Publication Date
GB1117942A true GB1117942A (en) 1968-06-26

Family

ID=10414533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4036964A Expired GB1117942A (en) 1964-10-03 1964-10-03 Improvements in or relating to sealing rings

Country Status (1)

Country Link
GB (1) GB1117942A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332899A2 (en) * 1988-03-14 1989-09-20 AlliedSignal Inc. Injection molding of fabric-reinforced elastomeric diaphragm
EP0499111A2 (en) * 1991-02-12 1992-08-19 Bridgestone/Firestone, Inc. Method and device for producing vehicle tire bead-bead filler assemblies
EP1785264A1 (en) * 2005-11-14 2007-05-16 Tyco Electronics Raychem GmbH Apparatus and process for making an elastic band
EP2565318A3 (en) * 2011-09-05 2013-10-30 Samsung Electronics Co., Ltd. Gasket applicable to laundry treatment apparatus, laundry treatment apparatus having the same, and manufacturing method and injection mold for the same
WO2016001940A1 (en) * 2014-07-01 2016-01-07 C.M.P. Srl System for shaping / cutting with expandable and collapsible core
CN113580500A (en) * 2021-08-02 2021-11-02 苏州弗莱依格密封科技有限公司 Rubber seal ring die and forming method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332899A2 (en) * 1988-03-14 1989-09-20 AlliedSignal Inc. Injection molding of fabric-reinforced elastomeric diaphragm
EP0332899A3 (en) * 1988-03-14 1991-10-02 AlliedSignal Inc. Injection molding of fabric-reinforced elastomeric diaphragm
EP0499111A2 (en) * 1991-02-12 1992-08-19 Bridgestone/Firestone, Inc. Method and device for producing vehicle tire bead-bead filler assemblies
EP0499111A3 (en) * 1991-02-12 1993-04-14 Bridgestone/Firestone, Inc. Method and device for producing vehicle tire bead-bead filler assemblies
US5262115A (en) * 1991-02-12 1993-11-16 Bridgestone/Firestone, Inc. Method and device for producing vehicle tire bead-bead filler assemblies
EP1785264A1 (en) * 2005-11-14 2007-05-16 Tyco Electronics Raychem GmbH Apparatus and process for making an elastic band
EP2565318A3 (en) * 2011-09-05 2013-10-30 Samsung Electronics Co., Ltd. Gasket applicable to laundry treatment apparatus, laundry treatment apparatus having the same, and manufacturing method and injection mold for the same
WO2016001940A1 (en) * 2014-07-01 2016-01-07 C.M.P. Srl System for shaping / cutting with expandable and collapsible core
CN113580500A (en) * 2021-08-02 2021-11-02 苏州弗莱依格密封科技有限公司 Rubber seal ring die and forming method thereof

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