GB1418621A - Injection moulding tool - Google Patents

Injection moulding tool

Info

Publication number
GB1418621A
GB1418621A GB632274A GB632274A GB1418621A GB 1418621 A GB1418621 A GB 1418621A GB 632274 A GB632274 A GB 632274A GB 632274 A GB632274 A GB 632274A GB 1418621 A GB1418621 A GB 1418621A
Authority
GB
United Kingdom
Prior art keywords
slides
core
corner
side core
slide
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
GB632274A
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.)
Mannesmann Demag Krauss Maffei GmbH
Original Assignee
Krauss Maffei AG
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 DE19732308359 external-priority patent/DE2308359C3/en
Application filed by Krauss Maffei AG filed Critical Krauss Maffei AG
Publication of GB1418621A publication Critical patent/GB1418621A/en
Expired legal-status Critical Current

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
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles
    • B29C45/4421Removing or ejecting moulded articles for undercut articles using expansible or collapsible cores

Landscapes

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

Abstract

1418621 Injection moulds KRAUSS-MAFFEI AG 12 Feb 1974 [20 Feb 1973] 06322/74 Heading B5A An injection mould for making rectangular hollow bodies having encircling projections or flanges, e.g. long narrow fluorescent light shades, comprisees a mould jacket 1 and a multipart mould core comprising a central part 10 with sloping sides on which are guided side core slides 11-14 and four corner slides 15-18 which are guided in a frame plate 7 so as to be displaceable diagonally towards the interior of the core. Each side core slide has a T-section groove 25 engaing a T-section strip 24 on the central core part 10. A spring 27 urges the slide towards the position shown in Fig. 3. Movement of the corner slides 15-18 to the Fig. 3 position may be effected by wedge surfaces 33 (Fig. 4) engaging chamfered ends 34 of guide pins 29 secured to the corner slides. The wedges 32 are secured to a plate 5 and the pins 29 slide in the plate 7. In a modification the corner slides may be moved hydraulically. In another embodiment (Figs. 5, 6, not shown) for making even narrower articles the side core slides 11, 12 are offset from one another. In a further embodiment (Figs. 7, 8, not shown) the other two side core slides 13, 14 are dispensed with, two of the corner slides 15, 17 being L-shaped.
GB632274A 1973-02-20 1974-02-12 Injection moulding tool Expired GB1418621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732308359 DE2308359C3 (en) 1973-02-20 Injection molding tool for manufacturing rectangular hollow bodies with circumferential undercuts

Publications (1)

Publication Number Publication Date
GB1418621A true GB1418621A (en) 1975-12-24

Family

ID=5872528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB632274A Expired GB1418621A (en) 1973-02-20 1974-02-12 Injection moulding tool

Country Status (4)

Country Link
FR (1) FR2218182B1 (en)
GB (1) GB1418621A (en)
IT (1) IT1008859B (en)
SE (1) SE403986B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120158A (en) * 1982-05-07 1983-11-30 Tooling Products Mounting and guiding cores
GB2249749A (en) * 1990-11-13 1992-05-20 Takata Corp Moulding a module cover for an air bag device which has undercut portions in mounting edge portions thereof
US11426910B2 (en) 2013-04-22 2022-08-30 Colop Stempelerzeugung Skopek Gesellschaft M.B.H & Co. Kg. Inkpad holder and device and method for producing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9308418D0 (en) * 1993-04-23 1993-06-09 Int Radiator Services Ltd Moulding

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120158A (en) * 1982-05-07 1983-11-30 Tooling Products Mounting and guiding cores
GB2249749A (en) * 1990-11-13 1992-05-20 Takata Corp Moulding a module cover for an air bag device which has undercut portions in mounting edge portions thereof
US5183615A (en) * 1990-11-13 1993-02-02 Takata Corporation Molding method of air bag cover
GB2249749B (en) * 1990-11-13 1994-09-21 Takata Corp Molding method of air bag cover
US11426910B2 (en) 2013-04-22 2022-08-30 Colop Stempelerzeugung Skopek Gesellschaft M.B.H & Co. Kg. Inkpad holder and device and method for producing the same

Also Published As

Publication number Publication date
DE2308359B2 (en) 1977-02-03
FR2218182A1 (en) 1974-09-13
SE403986B (en) 1978-09-18
FR2218182B1 (en) 1977-09-16
IT1008859B (en) 1976-11-30
DE2308359A1 (en) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee