GB1382583A - Plastics moulding - Google Patents

Plastics moulding

Info

Publication number
GB1382583A
GB1382583A GB967271A GB967271A GB1382583A GB 1382583 A GB1382583 A GB 1382583A GB 967271 A GB967271 A GB 967271A GB 967271 A GB967271 A GB 967271A GB 1382583 A GB1382583 A GB 1382583A
Authority
GB
United Kingdom
Prior art keywords
projections
core
projection
moulding
walls
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
GB967271A
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.)
Sankey Holding Ltd
Aro Plastics Development Ltd
Original Assignee
GKN Sankey Ltd
Aro Plastics Development 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 GKN Sankey Ltd, Aro Plastics Development Ltd filed Critical GKN Sankey Ltd
Priority to GB967271A priority Critical patent/GB1382583A/en
Priority to AU40882/72A priority patent/AU470569B2/en
Priority to SE482772A priority patent/SE367569B/xx
Priority to IT6816572A priority patent/IT954690B/en
Priority to CA139,740A priority patent/CA965919A/en
Priority to FR7213329A priority patent/FR2133800B1/fr
Priority to JP3823672A priority patent/JPS5528850B2/ja
Priority to DE19722218294 priority patent/DE2218294A1/en
Publication of GB1382583A publication Critical patent/GB1382583A/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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B29C33/123—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels for centering the inserts
    • 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
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/70—Completely encapsulating inserts
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

1382583 Moulding apparatus GKN SANKEY Ltd 4 April 1972 [16 April 1971] 9672/71 Heading B5A Apparatus for moulding thermoplastic material about a rigid reinforcing core 35 comprises projections 27 mounted on one or more of two mould parts 16, 20 means for moving the projections between positions for supporting the core and retracted inoperative positions, means to abstract heat from the cavity by transfer through the walls thereof, and means to control the transfer of heat along the projections 27 such that heat is abstracted at a rate less than that through the walls or is transferred into the cavity. The object of the invention is to prevent premature hardening of material adjacent the projections and thus ensure complete filling of the spaces left when the projections are withdrawn. Moulding is preferably effected by injection. As shown, the mould parts 16, 20 having cooling water passages 16a, 20a. The projections 27 are secured to sliders 29 which are movable horizontally to retract and project the projections. Each slider has an inclined bore 30 which slidably receives a pin 31 secured to a block 32 which is movable vertically by an hydraulic jack 13. In Fig. 3, the core 35 is an I-shaped beam, e.g. for a window frame, and each projection 27 has a tip 41 of material of poor heat conductivity e.g. sintered aluminium oxide. In Fig. 6 (not shown), each projection (48) carries a ceramic sleeve (53) held by a headed stud (52) received in a threaded bore in the projection. In Fig. 7 (not shown), the projections (59) are of metal and are received in ceramic bushes (60) mounted in the walls of the mould cavity. In Fig. 8 (not shown), the projections (66) comprise hollow metal cylinders (67) with closed ends (68) and a ceramic core (69). In Fig. 9 (not shown), each projection (74) is slidable in a bush (75) of thermally insulating material mounted in the mould wall, and contains an electric heating element (76). Fig. 10 (not shown), shows a modification wherein the projections (83) are heated by hot oil or other liquid supplied thereto by a feed pipe (85). An ejector pin 24 (Fig. 1), is used to locate the core 35 initially and is withdrawn before moulding commences.
GB967271A 1971-04-16 1971-04-16 Plastics moulding Expired GB1382583A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB967271A GB1382583A (en) 1971-04-16 1971-04-16 Plastics moulding
AU40882/72A AU470569B2 (en) 1971-04-16 1972-04-07 Plastics moulding
SE482772A SE367569B (en) 1971-04-16 1972-04-14
IT6816572A IT954690B (en) 1971-04-16 1972-04-14 PROCESS AND DEVICE FOR THE MOLDING OF PLASTIC MATERIALS
CA139,740A CA965919A (en) 1971-04-16 1972-04-14 Plastics moulding
FR7213329A FR2133800B1 (en) 1971-04-16 1972-04-14
JP3823672A JPS5528850B2 (en) 1971-04-16 1972-04-15
DE19722218294 DE2218294A1 (en) 1971-04-16 1972-04-15 Method and apparatus for embedding rigid reinforcement reinforcement in plastic in a mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB967271A GB1382583A (en) 1971-04-16 1971-04-16 Plastics moulding

Publications (1)

Publication Number Publication Date
GB1382583A true GB1382583A (en) 1975-02-05

Family

ID=9876538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB967271A Expired GB1382583A (en) 1971-04-16 1971-04-16 Plastics moulding

Country Status (8)

Country Link
JP (1) JPS5528850B2 (en)
AU (1) AU470569B2 (en)
CA (1) CA965919A (en)
DE (1) DE2218294A1 (en)
FR (1) FR2133800B1 (en)
GB (1) GB1382583A (en)
IT (1) IT954690B (en)
SE (1) SE367569B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6923632B2 (en) * 1995-05-19 2005-08-02 Denso Corporation Method and apparatus for forming a casting which includes an insert
US10710287B2 (en) 2014-10-17 2020-07-14 Taiwan Green Point Enterprises Co., Ltd. Injection molding method and mold mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011340A (en) * 1983-06-30 1985-01-21 Matsushita Electric Works Ltd Manufacture of door rail
CN112497685A (en) * 2020-11-18 2021-03-16 合肥晟泰克模塑科技有限公司 Mold heating device for mold injection molding system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089199A (en) * 1960-06-17 1963-05-14 Andrew A Halacsy Method of applying insulating incapsulation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6923632B2 (en) * 1995-05-19 2005-08-02 Denso Corporation Method and apparatus for forming a casting which includes an insert
US10710287B2 (en) 2014-10-17 2020-07-14 Taiwan Green Point Enterprises Co., Ltd. Injection molding method and mold mechanism

Also Published As

Publication number Publication date
DE2218294A1 (en) 1972-11-02
FR2133800A1 (en) 1972-12-01
JPS5528850B2 (en) 1980-07-30
JPS4848553A (en) 1973-07-10
FR2133800B1 (en) 1976-01-16
AU470569B2 (en) 1973-10-11
SE367569B (en) 1974-06-04
AU4088272A (en) 1973-10-11
CA965919A (en) 1975-04-15
IT954690B (en) 1973-09-15

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee