GB1133956A - Apparatus for moulding rubber articles - Google Patents

Apparatus for moulding rubber articles

Info

Publication number
GB1133956A
GB1133956A GB5167865A GB5167865A GB1133956A GB 1133956 A GB1133956 A GB 1133956A GB 5167865 A GB5167865 A GB 5167865A GB 5167865 A GB5167865 A GB 5167865A GB 1133956 A GB1133956 A GB 1133956A
Authority
GB
United Kingdom
Prior art keywords
skirt
die
piston
air
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
GB5167865A
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.)
Merco Tyre & Rubber Co Pty Ltd
Original Assignee
Merco Tyre & Rubber Co Pty 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
Priority claimed from AU53272/64A external-priority patent/AU289418B2/en
Application filed by Merco Tyre & Rubber Co Pty Ltd filed Critical Merco Tyre & Rubber Co Pty Ltd
Publication of GB1133956A publication Critical patent/GB1133956A/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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3607—Moulds for making articles of definite length, i.e. discrete articles with sealing means or the like
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/56—Compression moulding under special conditions, e.g. vacuum
    • B29C2043/561—Compression moulding under special conditions, e.g. vacuum under vacuum conditions
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

1,133,956. Compression moulding rubber articles. MERCO TYRE & RUBBER CO. PTY. Ltd., and G. EASTWOOD. 6 Dec., 1965 [23 Dec., 1964], No. 51678/65. Heading B5A. The entrapment of air in single or multiple cavity compression moulding of rubber articles is avoided by hermetically sealing a space between opposed die elements 3, 4 from which air is evacuated and a lower air pressure maintained, via one or more connections 12 to a vacuum pump, before the die elements 3, 4 are placed in final closed relationship with parting faces 7, 8 in contact. The hermetic seal is obtained by the engagement of one die in piston fashion within a skirt 9 formed on the other die and which piston and skirt may be of circular, elliptical or rectangular section ; one or more sealing rings 11 are preferably provided on the piston or skirt 9. A vacuum of 2 to 5 lb./sq. inch absolute is considered adequate. Abrupt closure of the moulds under vacuum may be resisted by external coil springs 13 or springs or compressible rubber plugs within the sealed space, e.g. in spaces 16. In an alternative embodiment (Fig. 2, not shown) the lower die element (4a) is housed within a cup-like member (14) which engages within the skirt (9A). Elimination of entrapped air is facilitated by repeated opening and closure of the die elements.
GB5167865A 1964-12-23 1965-12-06 Apparatus for moulding rubber articles Expired GB1133956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU53272/64A AU289418B2 (en) 1964-12-23 Moulded articles or rubber or the like, and method and apparatus for moulding them

Publications (1)

Publication Number Publication Date
GB1133956A true GB1133956A (en) 1968-11-20

Family

ID=3739287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5167865A Expired GB1133956A (en) 1964-12-23 1965-12-06 Apparatus for moulding rubber articles

Country Status (1)

Country Link
GB (1) GB1133956A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014067865A1 (en) * 2012-10-29 2014-05-08 Dieffenbacher GmbH Maschinen- und Anlagenbau Mold, control means, method and installation for producing a preferably fiber-reinforced plastic component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014067865A1 (en) * 2012-10-29 2014-05-08 Dieffenbacher GmbH Maschinen- und Anlagenbau Mold, control means, method and installation for producing a preferably fiber-reinforced plastic component

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