ES2156516A1 - Expulsor expansible para moldes de inyeccion. - Google Patents

Expulsor expansible para moldes de inyeccion.

Info

Publication number
ES2156516A1
ES2156516A1 ES009802691A ES9802691A ES2156516A1 ES 2156516 A1 ES2156516 A1 ES 2156516A1 ES 009802691 A ES009802691 A ES 009802691A ES 9802691 A ES9802691 A ES 9802691A ES 2156516 A1 ES2156516 A1 ES 2156516A1
Authority
ES
Spain
Prior art keywords
mould
rod
elastic clamp
forked end
end serving
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.)
Granted
Application number
ES009802691A
Other languages
English (en)
Other versions
ES2156516B1 (es
Inventor
Pruna Alberto Navarra
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to ES9802691A priority Critical patent/ES2156516B1/es
Publication of ES2156516A1 publication Critical patent/ES2156516A1/es
Application granted granted Critical
Publication of ES2156516B1 publication Critical patent/ES2156516B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4471—Removing or ejecting moulded articles for undercut articles using flexible or pivotable undercut forming elements

Landscapes

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

Abstract

Expulsor expandible para moldes de inyección. Constituido mediante un cuerpo monopieza en el que se define una varilla cilíndrica (1) que tras un debilitamiento (3) se remata en un cabezal expandible (2), a modo de pinza, centra sus características en el hecho de que dicho cabezal (2) adopta una configuración también cilíndrica, de diámetro coincidente con el de la varilla (1), lo que permite un fácil mecanizado del expulsor así como del propio molde, en el que será necesario un orificio también cilíndrico y de sección constante en toda su longitud. Las pinzas del cabezal (2), tras su obtención, adoptan con carácter estable una posición divergente, mediante un tratamiento térmico adecuado, de manera que se cierran cuando el cabezal penetra en el cuerpo del molde y se abren automáticamente cuando dicho cabezal (2) se libera del cuerpo del molde y accede al interior del mismo. En el seno del cabezal (2), en correspondencia con la zona de confluencia entre los cortes que lo convierten en una pinza, se establece un vaciado (9) formal y dimensionalmente coincidente con el negativo a obtener.
ES9802691A 1998-12-28 1998-12-28 Expulsor expansible para moldes de inyeccion. Expired - Fee Related ES2156516B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9802691A ES2156516B1 (es) 1998-12-28 1998-12-28 Expulsor expansible para moldes de inyeccion.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9802691A ES2156516B1 (es) 1998-12-28 1998-12-28 Expulsor expansible para moldes de inyeccion.

Publications (2)

Publication Number Publication Date
ES2156516A1 true ES2156516A1 (es) 2001-06-16
ES2156516B1 ES2156516B1 (es) 2002-02-16

Family

ID=8306213

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9802691A Expired - Fee Related ES2156516B1 (es) 1998-12-28 1998-12-28 Expulsor expansible para moldes de inyeccion.

Country Status (1)

Country Link
ES (1) ES2156516B1 (es)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1019575U (es) * 1991-12-11 1992-04-01 Navarra Pruna Alberto Cabeza de sujecion para expulsores y tubulares en moldes de inyeccion y topes de seguridad para su funcionamiento.
ES2050901T3 (es) * 1989-10-05 1994-06-01 Geiger Plastic Verwaltung Parte de molde de fundicion a presion.
ES1031883U (es) * 1995-08-11 1996-03-01 Pruna Alberto Navarra Accesorio moldeador-expulsor para moldes de inyeccion.
EP0713756A2 (en) * 1994-11-25 1996-05-29 Sumitomo Wiring Systems, Ltd. Molding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2050901T3 (es) * 1989-10-05 1994-06-01 Geiger Plastic Verwaltung Parte de molde de fundicion a presion.
ES1019575U (es) * 1991-12-11 1992-04-01 Navarra Pruna Alberto Cabeza de sujecion para expulsores y tubulares en moldes de inyeccion y topes de seguridad para su funcionamiento.
EP0713756A2 (en) * 1994-11-25 1996-05-29 Sumitomo Wiring Systems, Ltd. Molding apparatus
ES1031883U (es) * 1995-08-11 1996-03-01 Pruna Alberto Navarra Accesorio moldeador-expulsor para moldes de inyeccion.

Also Published As

Publication number Publication date
ES2156516B1 (es) 2002-02-16

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