GB1520258A - Process and a core for the manufacture of a flexible hollow moulded workpiece - Google Patents

Process and a core for the manufacture of a flexible hollow moulded workpiece

Info

Publication number
GB1520258A
GB1520258A GB3661675A GB3661675A GB1520258A GB 1520258 A GB1520258 A GB 1520258A GB 3661675 A GB3661675 A GB 3661675A GB 3661675 A GB3661675 A GB 3661675A GB 1520258 A GB1520258 A GB 1520258A
Authority
GB
United Kingdom
Prior art keywords
core
geometrical
article
positions
destructible
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
GB3661675A
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.)
Woco Franz Josef Wolf and Co GmbH
Original Assignee
Woco Franz Josef Wolf and Co GmbH
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 Woco Franz Josef Wolf and Co GmbH filed Critical Woco Franz Josef Wolf and Co GmbH
Publication of GB1520258A publication Critical patent/GB1520258A/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
    • B29C45/26—Moulds
    • B29C45/261—Moulds having tubular mould cavities
    • B29C45/2614—Moulds having tubular mould cavities for manufacturing bent tubular articles using an undercut forming mould core
    • 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
    • B29C33/0033—Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
    • 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
    • B29C33/448—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 destructible
    • 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
    • B29C33/76—Cores
    • 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
    • B29C45/261—Moulds having tubular mould cavities
    • 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
    • B29C45/4457—Removing or ejecting moulded articles for undercut articles using fusible, soluble or destructible cores
    • 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
    • B29L2031/24—Pipe joints or couplings
    • B29L2031/243—Elbows
    • 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
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

1520258 Destructible core WOCO FRANZ-JOSEF WOLF & CO 5 Sept 1975 [21 Aug 1975] 36616/75 Heading B5A A destructible core is made in one piece with one or more positions at which it can be fractured into a defined number of pieces to allow its removal in several pieces from a moulded article. Fracture points are defined by positions of geometrical weakness (local thinning) or by weak material (e.g. with depolymerization, recrystallization or varying texture). The core is cast from metal or extruded from fibre glass reinforced polyamide, a thermosetting plastics or glass. The core is described as useful for moulding X, Y, T or bent flexible junction tubes by injecting, pressing, dipping or centrifugally dipping methods. Fig. 7, shows a core having a main limb 21 and three branches 2, with geometrical weaknesses 1. A neck 3 and frusto-conical portions 8 define sealing surfaces in the article moulded around the core from soft PVC, an elastic thermoplastics, or an ethylene-propylene-terpolymeride rubber including butadiene and natural rubber. The moulded article is flexed to fracture the core. Operation can be automatic.
GB3661675A 1975-08-21 1975-09-05 Process and a core for the manufacture of a flexible hollow moulded workpiece Expired GB1520258A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752537251 DE2537251C3 (en) 1975-08-21 1975-08-21 Process for the production of a hollow body open on several sides and a one-piece mold core for carrying out this process

Publications (1)

Publication Number Publication Date
GB1520258A true GB1520258A (en) 1978-08-02

Family

ID=5954519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3661675A Expired GB1520258A (en) 1975-08-21 1975-09-05 Process and a core for the manufacture of a flexible hollow moulded workpiece

Country Status (4)

Country Link
JP (1) JPS596205B2 (en)
DE (1) DE2537251C3 (en)
FR (1) FR2321378A1 (en)
GB (1) GB1520258A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269777A (en) * 1992-07-30 1994-02-23 Masaru Nemoto Mould core
CN103026042A (en) * 2010-07-16 2013-04-03 曼·胡默尔有限公司 Process for molding the plastic body of an air intake collector for internal combustion engine
WO2013063080A3 (en) * 2011-10-24 2013-06-27 United States Gypsum Company Multi-piece mold and method of making slurry distributor
US9296124B2 (en) 2010-12-30 2016-03-29 United States Gypsum Company Slurry distributor with a wiping mechanism, system, and method for using same
US9579822B2 (en) 2010-12-30 2017-02-28 United States Gypsum Company Slurry distribution system and method
US9616591B2 (en) 2010-12-30 2017-04-11 United States Gypsum Company Slurry distributor, system and method for using same
US9772621B2 (en) 2011-10-07 2017-09-26 Materialise N.V. Methods for the manufacture of intraluminal endoprosthesis
US9909718B2 (en) 2011-10-24 2018-03-06 United States Gypsum Company Multiple-leg discharge boot for slurry distribution
US9999989B2 (en) 2010-12-30 2018-06-19 United States Gypsum Company Slurry distributor with a profiling mechanism, system, and method for using same
US10052793B2 (en) 2011-10-24 2018-08-21 United States Gypsum Company Slurry distributor, system, and method for using same
US10059033B2 (en) 2014-02-18 2018-08-28 United States Gypsum Company Cementitious slurry mixing and dispensing system with pulser assembly and method for using same
US10076853B2 (en) 2010-12-30 2018-09-18 United States Gypsum Company Slurry distributor, system, and method for using same

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR7616959A (en) * 1976-02-18
JPS60205993A (en) * 1984-03-29 1985-10-17 東芝ライテック株式会社 Illumination control system
JPS6486483A (en) * 1987-09-29 1989-03-31 Toshiba Electric Equip Illumination control system
EP0384924B1 (en) * 1989-02-28 1995-01-04 Asahi Kasei Kogyo Kabushiki Kaisha A process for producing a resin product having a bent hollow portion and a core usable for the same process
DE4240017C2 (en) * 1992-11-27 2001-03-15 Wolf Woco & Co Franz J Process for the production of hollow molded parts which are open at least on two sides
US6547210B1 (en) 2000-02-17 2003-04-15 Wright Medical Technology, Inc. Sacrificial insert for injection molding
US9034455B2 (en) * 2012-06-28 2015-05-19 Avent, Inc. Branching core-pin assembly and system for forming branching channels
WO2014053616A1 (en) 2012-10-05 2014-04-10 Materialise N.V. Customized aortic stent device and method of making the same
CA2961162C (en) * 2014-09-26 2022-10-18 Avent, Inc. Single core pin assembly that creates two independent valve retainers for enteral feeding head
DE102016218025A1 (en) 2016-09-20 2018-03-22 Bayerische Motoren Werke Aktiengesellschaft Generation of a fiber composite component complex
DE102017120503B4 (en) * 2017-09-06 2020-02-13 Holzammer Kunststofftechnik GmbH Injection molded header for a heat exchanger, injection molding tool and method of making such

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4719353A (en) * 1971-02-18 1972-09-21

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269777A (en) * 1992-07-30 1994-02-23 Masaru Nemoto Mould core
GB2269771B (en) * 1992-07-30 1996-05-22 Masaru Nemoto Method of moulding articles
GB2269777B (en) * 1992-07-30 1997-04-02 Masaru Nemoto Mould core
CN103026042B (en) * 2010-07-16 2016-04-06 曼·胡默尔有限公司 Be molded the method for the plastic body of the inlet collector for internal-combustion engine
CN103026042A (en) * 2010-07-16 2013-04-03 曼·胡默尔有限公司 Process for molding the plastic body of an air intake collector for internal combustion engine
US9296124B2 (en) 2010-12-30 2016-03-29 United States Gypsum Company Slurry distributor with a wiping mechanism, system, and method for using same
US10076853B2 (en) 2010-12-30 2018-09-18 United States Gypsum Company Slurry distributor, system, and method for using same
US9579822B2 (en) 2010-12-30 2017-02-28 United States Gypsum Company Slurry distribution system and method
US9616591B2 (en) 2010-12-30 2017-04-11 United States Gypsum Company Slurry distributor, system and method for using same
US10245611B2 (en) 2010-12-30 2019-04-02 United States Gypsum Company Slurry distribution system and method
US9999989B2 (en) 2010-12-30 2018-06-19 United States Gypsum Company Slurry distributor with a profiling mechanism, system, and method for using same
US10239230B2 (en) 2010-12-30 2019-03-26 United States Gypsum Company Slurry distributor, system and method for using same
US9772621B2 (en) 2011-10-07 2017-09-26 Materialise N.V. Methods for the manufacture of intraluminal endoprosthesis
WO2013063080A3 (en) * 2011-10-24 2013-06-27 United States Gypsum Company Multi-piece mold and method of making slurry distributor
US10052793B2 (en) 2011-10-24 2018-08-21 United States Gypsum Company Slurry distributor, system, and method for using same
US9909718B2 (en) 2011-10-24 2018-03-06 United States Gypsum Company Multiple-leg discharge boot for slurry distribution
US10286572B2 (en) 2011-10-24 2019-05-14 United States Gypsum Company Flow splitter for slurry distribution system
US10293522B2 (en) 2011-10-24 2019-05-21 United States Gypsum Company Multi-piece mold and method of making slurry distributor
US10059033B2 (en) 2014-02-18 2018-08-28 United States Gypsum Company Cementitious slurry mixing and dispensing system with pulser assembly and method for using same

Also Published As

Publication number Publication date
DE2537251B2 (en) 1980-04-24
JPS56142017A (en) 1981-11-06
DE2537251A1 (en) 1977-02-24
DE2537251C3 (en) 1980-12-18
JPS596205B2 (en) 1984-02-09
FR2321378B1 (en) 1980-04-25
FR2321378A1 (en) 1977-03-18

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Legal Events

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

Effective date: 19920905