FR2418687A1 - Moule pour la fabrication de pieces a profil interieur detalonne - Google Patents

Moule pour la fabrication de pieces a profil interieur detalonne

Info

Publication number
FR2418687A1
FR2418687A1 FR7806080A FR7806080A FR2418687A1 FR 2418687 A1 FR2418687 A1 FR 2418687A1 FR 7806080 A FR7806080 A FR 7806080A FR 7806080 A FR7806080 A FR 7806080A FR 2418687 A1 FR2418687 A1 FR 2418687A1
Authority
FR
France
Prior art keywords
segments
tool
motion
undercut
slide mechanisms
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.)
Withdrawn
Application number
FR7806080A
Other languages
English (en)
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.)
PLASTO MOULAGES INDLS
Original Assignee
PLASTO MOULAGES INDLS
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 PLASTO MOULAGES INDLS filed Critical PLASTO MOULAGES INDLS
Priority to FR7806080A priority Critical patent/FR2418687A1/fr
Publication of FR2418687A1 publication Critical patent/FR2418687A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/22Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/24Accessories for locating and holding cores or inserts
    • 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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Moule pour la fabrication de pièces comportant un profil intérieur détalonné. Il comprend un noyau de moulage 4 dont la partie arrière Il comprend, sur son pourtour, des premiers segments 27 et des seconds segments 34 disposés alternativement. Ces segments sont conformés extérieurement suivant le profil détalonné à réaliser. Les premiers segments ont des surfaces latérales 28 qui divergent vers l'intérieur. Les seconds segments ont des surfaces latérales 39 qui convergent vers l'intérieur. Tous ces segments sont montés coulissants radialement au noyau 4. Les, premiers segments 27 sont reliés positivement chacun par un guidage incliné 24 à un premier élément mobile 20 déplaçable axialement, le déplacement axial suivant 6 de ces derniers, provoquant le déplacement radial vers l'intérieur, des premiers segments 27. D'autre part, les seconds segments 34 comportent chacun un cône en creux destiné à coopérer avec l'extrémité conique d'un secpnd élément mobile 31. Le déplacement axial suivant 43, de ces derniers, provoquant le déplacement radial vers l'intérieur des seconds segments 34. Moule pour les matières plastiques ou les métaux.
FR7806080A 1978-03-01 1978-03-01 Moule pour la fabrication de pieces a profil interieur detalonne Withdrawn FR2418687A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7806080A FR2418687A1 (fr) 1978-03-01 1978-03-01 Moule pour la fabrication de pieces a profil interieur detalonne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7806080A FR2418687A1 (fr) 1978-03-01 1978-03-01 Moule pour la fabrication de pieces a profil interieur detalonne

Publications (1)

Publication Number Publication Date
FR2418687A1 true FR2418687A1 (fr) 1979-09-28

Family

ID=9205286

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806080A Withdrawn FR2418687A1 (fr) 1978-03-01 1978-03-01 Moule pour la fabrication de pieces a profil interieur detalonne

Country Status (1)

Country Link
FR (1) FR2418687A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522579A1 (fr) * 1982-03-03 1983-09-09 Prod Avicoles Lillois Perfectionnement aux moules pour la fabrication des assiettes d'appareils d'alimentation automatique periodique, notamment pour volailles, et assiettes fabriquees avec ce moule
FR2570305A1 (fr) * 1984-09-19 1986-03-21 Canon Kk Appareil et procede de moulage d'une piece comportant des parties en contre-depouille
WO2014083098A2 (fr) * 2012-11-28 2014-06-05 Oskar Frech Gmbh + Co. Kg Noyau éclipsable et demi-moule équipé dudit noyau
CN108943608A (zh) * 2018-07-16 2018-12-07 三威实业(珠海)有限公司 模具及其开模方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2082236A5 (en) * 1970-03-09 1971-12-10 Slym Undercut mouldings - using a mould with segments converging coaxially along inclined slides and dowels
DE2637429A1 (de) * 1975-10-17 1977-04-21 Jenoptik Jena Gmbh Beweglicher kern mit kernzugeinrichtung
US4021180A (en) * 1974-12-20 1977-05-03 Standard Oil Company (Indiana) Collapsible core
DE2619066A1 (de) * 1976-05-03 1977-11-17 Geyer & Co Spreizkern fuer ein formwerkzeug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2082236A5 (en) * 1970-03-09 1971-12-10 Slym Undercut mouldings - using a mould with segments converging coaxially along inclined slides and dowels
US4021180A (en) * 1974-12-20 1977-05-03 Standard Oil Company (Indiana) Collapsible core
DE2637429A1 (de) * 1975-10-17 1977-04-21 Jenoptik Jena Gmbh Beweglicher kern mit kernzugeinrichtung
DE2619066A1 (de) * 1976-05-03 1977-11-17 Geyer & Co Spreizkern fuer ein formwerkzeug

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522579A1 (fr) * 1982-03-03 1983-09-09 Prod Avicoles Lillois Perfectionnement aux moules pour la fabrication des assiettes d'appareils d'alimentation automatique periodique, notamment pour volailles, et assiettes fabriquees avec ce moule
FR2570305A1 (fr) * 1984-09-19 1986-03-21 Canon Kk Appareil et procede de moulage d'une piece comportant des parties en contre-depouille
WO2014083098A2 (fr) * 2012-11-28 2014-06-05 Oskar Frech Gmbh + Co. Kg Noyau éclipsable et demi-moule équipé dudit noyau
WO2014083098A3 (fr) * 2012-11-28 2014-08-07 Oskar Frech Gmbh + Co. Kg Noyau éclipsable et demi-moule équipé dudit noyau
CN104955591A (zh) * 2012-11-28 2015-09-30 奥斯卡弗里茨两合公司 伸缩式型芯及与其装配的铸造半模
US10441996B2 (en) 2012-11-28 2019-10-15 Oskar Frech Gmbh + Co. Kg Collapsible core and a casting mold half equipped therewith
CN108943608A (zh) * 2018-07-16 2018-12-07 三威实业(珠海)有限公司 模具及其开模方法
CN108943608B (zh) * 2018-07-16 2023-12-08 三威实业(珠海)有限公司 模具及其开模方法

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