FR2109327A5 - Injection mould design - with automatic sprue ejection prior to opening the mould - Google Patents

Injection mould design - with automatic sprue ejection prior to opening the mould

Info

Publication number
FR2109327A5
FR2109327A5 FR7036856A FR7036856A FR2109327A5 FR 2109327 A5 FR2109327 A5 FR 2109327A5 FR 7036856 A FR7036856 A FR 7036856A FR 7036856 A FR7036856 A FR 7036856A FR 2109327 A5 FR2109327 A5 FR 2109327A5
Authority
FR
France
Prior art keywords
mould
injection
opening
moulding
prior
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
FR7036856A
Other languages
French (fr)
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.)
Nidec Leroy Somer Holding SA
Original Assignee
Leroy Somer SA
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 Leroy Somer SA filed Critical Leroy Somer SA
Priority to FR7036856A priority Critical patent/FR2109327A5/en
Application granted granted Critical
Publication of FR2109327A5 publication Critical patent/FR2109327A5/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
    • B29C45/38—Cutting-off equipment for sprues or ingates
    • 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
    • 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
    • B29C45/38—Cutting-off equipment for sprues or ingates
    • B29C2045/384—Cutting-off equipment for sprues or ingates cutting the sprue by a plunger movable into the runner channel

Landscapes

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

Abstract

Mould has a supplementary ejection system opposite the injection point to punch the sprue back out through the injection face platen after withdrawal of the injection nozzle and prior to opening of the mould. A separate system subsequently ejects teh moulding after the main mould is parted. Esp. for injection moulding of thermoplastics where a hole can be tolerated at the injection point, e.g. electric motor end covers. The sprue can be discharged and collected separate from the mouldings and can be severed by a relatively low power system while still soft. No further finishing of the moulding is needed.
FR7036856A 1970-10-13 1970-10-13 Injection mould design - with automatic sprue ejection prior to opening the mould Expired FR2109327A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7036856A FR2109327A5 (en) 1970-10-13 1970-10-13 Injection mould design - with automatic sprue ejection prior to opening the mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7036856A FR2109327A5 (en) 1970-10-13 1970-10-13 Injection mould design - with automatic sprue ejection prior to opening the mould

Publications (1)

Publication Number Publication Date
FR2109327A5 true FR2109327A5 (en) 1972-05-26

Family

ID=9062633

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7036856A Expired FR2109327A5 (en) 1970-10-13 1970-10-13 Injection mould design - with automatic sprue ejection prior to opening the mould

Country Status (1)

Country Link
FR (1) FR2109327A5 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181590A2 (en) * 1984-11-16 1986-05-21 Krauss-Maffei Aktiengesellschaft Method and apparatus for punching and removing the sprue in an injection mould
EP0675793A1 (en) * 1992-11-23 1995-10-11 S.C. JOHNSON & SON, INC. Producing weld-line free injection molded parts
EP0791448A2 (en) * 1996-02-26 1997-08-27 HERBST, Richard Method and apparatus for injection moulding of plastic articles
WO2007025874A1 (en) * 2005-09-02 2007-03-08 BSH Bosch und Siemens Hausgeräte GmbH Receptacle for a household appliance and method and injection mould for the production thereof
US20090081537A1 (en) * 2007-09-21 2009-03-26 Kim Il-Joong Battery pack case, battery pack including the same, and methods of manufacturing the battery pack case and the battery pack
US11588215B2 (en) * 2018-01-31 2023-02-21 Gs Yuasa International Ltd. Energy storage device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181590A2 (en) * 1984-11-16 1986-05-21 Krauss-Maffei Aktiengesellschaft Method and apparatus for punching and removing the sprue in an injection mould
EP0181590A3 (en) * 1984-11-16 1988-03-16 Krauss-Maffei Aktiengesellschaft Method and apparatus for punching and removing the sprue in an injection mould
US4820467A (en) * 1984-11-16 1989-04-11 Krauss-Maffei A.G. Process for the punching and removing of the sprue in an injection molding tool
EP0675793A1 (en) * 1992-11-23 1995-10-11 S.C. JOHNSON & SON, INC. Producing weld-line free injection molded parts
EP0675793A4 (en) * 1992-11-23 1996-09-18 Johnson & Son Inc S C Producing weld-line free injection molded parts.
EP0791448A2 (en) * 1996-02-26 1997-08-27 HERBST, Richard Method and apparatus for injection moulding of plastic articles
EP0791448A3 (en) * 1996-02-26 1999-05-12 HERBST, Richard Method and apparatus for injection moulding of plastic articles
WO2007025874A1 (en) * 2005-09-02 2007-03-08 BSH Bosch und Siemens Hausgeräte GmbH Receptacle for a household appliance and method and injection mould for the production thereof
US20090081537A1 (en) * 2007-09-21 2009-03-26 Kim Il-Joong Battery pack case, battery pack including the same, and methods of manufacturing the battery pack case and the battery pack
US11588215B2 (en) * 2018-01-31 2023-02-21 Gs Yuasa International Ltd. Energy storage device

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Legal Events

Date Code Title Description
ST Notification of lapse