GB845080A - Moulds for forming articles provided with internal screw threads - Google Patents

Moulds for forming articles provided with internal screw threads

Info

Publication number
GB845080A
GB845080A GB592959A GB592959A GB845080A GB 845080 A GB845080 A GB 845080A GB 592959 A GB592959 A GB 592959A GB 592959 A GB592959 A GB 592959A GB 845080 A GB845080 A GB 845080A
Authority
GB
United Kingdom
Prior art keywords
injection
moulded
caps
core
mould
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
GB592959A
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.)
ERIK FUGLSANG MADSEN
Original Assignee
ERIK FUGLSANG MADSEN
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 ERIK FUGLSANG MADSEN filed Critical ERIK FUGLSANG MADSEN
Priority to GB592959A priority Critical patent/GB845080A/en
Publication of GB845080A publication Critical patent/GB845080A/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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/43—Removing or ejecting moulded articles using fluid under pressure
    • 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
    • B29C33/442—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 mechanical ejector or drive means therefor
    • B29C33/444—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 mechanical ejector or drive means therefor for stripping articles from a mould core, e.g. using stripper plates
    • B29C33/446—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 mechanical ejector or drive means therefor for stripping articles from a mould core, e.g. using stripper plates and using a rotating movement to unscrew 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2618—Moulds having screw-threaded mould walls
    • B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2001/00—Articles provided with screw threads
    • 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

Abstract

845,080. Injection moulding apparatus MADSEN, E. F. Feb. 20, 1959, No. 5929/59 Class 87(2). [Also in Group XXII] Internally threaded articles, e.g. screw caps, are injection moulded on a rotatable core 78 having a screw threaded end 80, the core 78 extending through a mould plate 36 which remains in engagement with the article while the core is being unscrewed from the article. In the example the mould comprises two parts 10, 12, the part 10 containing nine cavities 18. Material is injected through passages 20, 22. After injection, the part 12 is moved away from the part 10 and then the cores 78 are rotated through gearing 92, 93 by a shaft 94. Rotation of the moulded caps is prevented by ribs 112, Fig. 3, on the mould plate 36 which is urged away from the other plates 32, 34 of the mould part 12 by springs 42. As the shaft 94 rotates, it disengages a threaded extension 104 from the sprue in passage 20, and the sprues in passage 22 are pushed outwardly by rods 130 and severed from the moulded caps at narrowed parts 26 of the injection passages. The rods 130 are actuated by springs 132 or by compressed air. Compressed air supplied through a nozzle 128, channels 126, 120 and grooves 122, 124 assists in removing the moulded caps from the cores 78.
GB592959A 1959-02-20 1959-02-20 Moulds for forming articles provided with internal screw threads Expired GB845080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB592959A GB845080A (en) 1959-02-20 1959-02-20 Moulds for forming articles provided with internal screw threads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB592959A GB845080A (en) 1959-02-20 1959-02-20 Moulds for forming articles provided with internal screw threads

Publications (1)

Publication Number Publication Date
GB845080A true GB845080A (en) 1960-08-17

Family

ID=9805275

Family Applications (1)

Application Number Title Priority Date Filing Date
GB592959A Expired GB845080A (en) 1959-02-20 1959-02-20 Moulds for forming articles provided with internal screw threads

Country Status (1)

Country Link
GB (1) GB845080A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006048433A1 (en) * 2004-11-03 2006-05-11 Rz Engineering Device for producing, by molding, a casing with bellows having means for holding an unscrewable core, and corresponding method
FR2881982A1 (en) * 2004-11-03 2006-08-18 Rz Engineering Soc Par Actions Connecting device e.g. bent bundle duct/cable grommet, for passage and protection of electric cables, has inserts situated at ends of flexible body that has part presenting spiral shape in accordion, where body and inserts form single block
CN102205608A (en) * 2011-01-28 2011-10-05 广东轻工职业技术学院 Screw thread demoulding mechanism for dies and secure demoulding method
EP3199320A1 (en) * 2016-02-01 2017-08-02 The Procter and Gamble Company Injection molding device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006048433A1 (en) * 2004-11-03 2006-05-11 Rz Engineering Device for producing, by molding, a casing with bellows having means for holding an unscrewable core, and corresponding method
FR2881982A1 (en) * 2004-11-03 2006-08-18 Rz Engineering Soc Par Actions Connecting device e.g. bent bundle duct/cable grommet, for passage and protection of electric cables, has inserts situated at ends of flexible body that has part presenting spiral shape in accordion, where body and inserts form single block
CN102205608A (en) * 2011-01-28 2011-10-05 广东轻工职业技术学院 Screw thread demoulding mechanism for dies and secure demoulding method
EP3199320A1 (en) * 2016-02-01 2017-08-02 The Procter and Gamble Company Injection molding device
WO2017136307A1 (en) * 2016-02-01 2017-08-10 The Procter & Gamble Company Injection molding device
US10603828B2 (en) 2016-02-01 2020-03-31 The Procter & Gamble Company Injection molding device

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