WO1998056558A8 - Verfahren und vorrichtung zum spritzgiessen eines kunststoffkörpers mit innengewinde - Google Patents

Verfahren und vorrichtung zum spritzgiessen eines kunststoffkörpers mit innengewinde

Info

Publication number
WO1998056558A8
WO1998056558A8 PCT/EP1998/003361 EP9803361W WO9856558A8 WO 1998056558 A8 WO1998056558 A8 WO 1998056558A8 EP 9803361 W EP9803361 W EP 9803361W WO 9856558 A8 WO9856558 A8 WO 9856558A8
Authority
WO
WIPO (PCT)
Prior art keywords
thread
plastic body
internal thread
core
sections
Prior art date
Application number
PCT/EP1998/003361
Other languages
English (en)
French (fr)
Other versions
WO1998056558A1 (de
Inventor
Richard Herbst
Original Assignee
Richard Herbst
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 Richard Herbst filed Critical Richard Herbst
Priority to EP98938604A priority Critical patent/EP0988138A1/de
Priority to JP50152999A priority patent/JP2002503163A/ja
Publication of WO1998056558A1 publication Critical patent/WO1998056558A1/de
Publication of WO1998056558A8 publication Critical patent/WO1998056558A8/de

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
    • B29C45/2681—Moulds with rotatable 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/485—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling cores or mandrels
    • 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
    • B29C45/2618—Moulds having screw-threaded mould walls
    • B29C45/2622—Moulds having screw-threaded mould walls for moulding interrupted screw threads
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C2045/4485—Removing or ejecting moulded articles for undercut articles the undercut forming mould part being rotatable into the space made available by the translation movement of another mould part
    • 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
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers

Landscapes

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

Abstract

Ein Verfahren und eine Vorrichtung dienen zum Spritzgießen eines Kunststoffkörpers mit Innengewinde, vorzugsweise einer Schraubkappe. Der Kunststoffkörper wird in einem Formhohlraum eines Werkzeugs spritzgegossen. In dem Formhohlraum ist ein mit einem zum Innengewinde komplementären Außengewinde (49) versehener Kern (50) angeordnet. Das Innengewinde sowie das Außengewinde (49) sind aus über deren Umfang verteilten Gewindesegmenten bzw. Gewindeabschnitten (51a-51d) gebildet, die zwischen sich axial verlaufende Lücken bzw. Lückenabschnitte (52a-52d) aufweisen. Der gespritzte Kunststoffkörper wird von dem Kern (50) entformt. Der Bereich der Lückenabschnitte (52a-52d) wird vor dem Einspritzen des Kunststoffs mit entfernbaren Füllkörpern, insbesondere Schiebern (53a-53b), ausgefüllt. Die Füllkörper werden nach dem Einspritzen des Kunststoffs aus den Lückenabschnitten (52a-52d) entfernt. Der Kern (50) und/oder der Kunststoffkörper werden, relativ zueinander, danach um die Achse (14) der Gewinde (49) verdreht, derart, daß die Gewindeabschnitte (51a-51d) mit den Lücken fluchten. Der Kunststoffkörper wird schließlich in Axialrichtung von dem Kern entformt.
PCT/EP1998/003361 1997-06-09 1998-06-05 Verfahren und vorrichtung zum spritzgiessen eines kunststoffkörpers mit innengewinde WO1998056558A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98938604A EP0988138A1 (de) 1997-06-09 1998-06-05 Verfahren und vorrichtung zum spritzgiessen eines kunststoffkörpers mit innengewinde
JP50152999A JP2002503163A (ja) 1997-06-09 1998-06-05 雌螺子を有するプラスチック用品の射出成形方法及び装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724204.9 1997-06-09
DE1997124204 DE19724204A1 (de) 1997-06-09 1997-06-09 Verfahren und Vorrichtung zum Spritzgießen eines Kunststoffkörpers mit Innengewinde

Publications (2)

Publication Number Publication Date
WO1998056558A1 WO1998056558A1 (de) 1998-12-17
WO1998056558A8 true WO1998056558A8 (de) 2005-03-24

Family

ID=7831889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/003361 WO1998056558A1 (de) 1997-06-09 1998-06-05 Verfahren und vorrichtung zum spritzgiessen eines kunststoffkörpers mit innengewinde

Country Status (4)

Country Link
EP (1) EP0988138A1 (de)
JP (1) JP2002503163A (de)
DE (1) DE19724204A1 (de)
WO (1) WO1998056558A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6079973A (en) * 1998-03-27 2000-06-27 Comar, Inc. Apparatus for molding plastic caps
ES2371731B1 (es) * 2010-06-11 2012-05-28 Irumold S.L. Molde para piezas inyectadas con contrasalidas internas.
IT201800009101A1 (it) * 2018-10-02 2020-04-02 Gefit Spa Apparato e metodo per fabbricare un tappo di garanzia per bottiglie
DE102020122372B3 (de) 2020-08-27 2022-01-13 Schaeffler Technologies AG & Co. KG Kunststoffteil mit einem Innengewinde und Verfahren zur Herstellung eines Kunststoffteils

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272065A (de) * 1960-12-05
US3528637A (en) * 1965-08-24 1970-09-15 Microdot Inc Core set for molding a partial thread
US3387323A (en) * 1966-03-14 1968-06-11 Nyloncraft Inc Mold with core having thread forming portions
US3718419A (en) * 1971-04-21 1973-02-27 Monsanto Co Apparatus for removing a hollow article having internal enlargements from an injection mold assembly
GB8322469D0 (en) * 1983-08-20 1983-09-21 Dynacast Int Ltd Apparatus for forming internally screw-threaded article
DE19509319C2 (de) * 1995-03-15 1997-03-13 Murjahn Kg Vlm Glühlampenschraubfassung sowie eine Vorrichtung zu ihrer Herstellung

Also Published As

Publication number Publication date
DE19724204A1 (de) 1998-12-10
EP0988138A1 (de) 2000-03-29
WO1998056558A1 (de) 1998-12-17
JP2002503163A (ja) 2002-01-29

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