EP2125325A1 - Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé - Google Patents

Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé

Info

Publication number
EP2125325A1
EP2125325A1 EP08707374A EP08707374A EP2125325A1 EP 2125325 A1 EP2125325 A1 EP 2125325A1 EP 08707374 A EP08707374 A EP 08707374A EP 08707374 A EP08707374 A EP 08707374A EP 2125325 A1 EP2125325 A1 EP 2125325A1
Authority
EP
European Patent Office
Prior art keywords
mold
injection
surface layer
layer
slide
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Withdrawn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
EP08707374A
Other languages
German (de)
English (en)
Inventor
Georg Kaufmann
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.)
Georg Kaufmann Formenbau AG
Original Assignee
Georg Kaufmann Formenbau AG
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 Georg Kaufmann Formenbau AG filed Critical Georg Kaufmann Formenbau AG
Priority to EP08707374A priority Critical patent/EP2125325A1/fr
Publication of EP2125325A1 publication Critical patent/EP2125325A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0446—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by increasing the density locally by compressing part of the foam while still in the mould
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/582—Moulds for making undercut 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/586—Moulds with a cavity increasing in size during foaming
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable 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
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3008—Instrument panels
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels

Definitions

  • Injection mold for producing an injection molded part from a rigid plastic layer and a foam plastic surface layer
  • the invention relates to an injection mold for producing an injection molding from a rigid plastic layer and a foam plastic surface layer, with one or more undercut areas.
  • Suitable plastics for the rigid plastic carrier layer and the foam plastic surface layer are known and described for example in EP 06 111 792.5.
  • the injection-molded part with one or more undercut planes can in particular be an instrument panel.
  • undercut areas all areas of injection-molded parts, in the present case instrument panels for motor vehicles, are referred to, which are not visible from the point of view perpendicular to the parting plane of the injection mold for the injection-molded part.
  • the material forming the foam plastic surface layer is also applied to the rigid plastic carrier layer in the undercut region.
  • the visible edge that is, the transition between the viewing area and the undercut area of the injection molded part aesthetically pleasing, evenly and be formed with a foam plastic surface layer in a predetermined thickness.
  • Shaped plastic surface layer perfect condition of the visible edges at the transition to the undercut area or the undercut areas allows.
  • the solution consists in an injection mold for the production of an injection molded part a rigid plastic layer and a foam plastic surface layer,
  • undercut region comprising two mold halves and one or more slides defining a mold cavity with a convex and concave side, characterized in that a first slide is provided on the convex side of the mold cavity, which is positively connected to the first, the Undercut area facing away from the mold half and with the same after the injection of the rigid plastic layer and the foam plastic surface layer forming polymer melt, in the decompression step of the foam plastic surface layer forming polymer melt, in the same direction is movable.
  • injection-molded parts with one or more undercut regions can advantageously be produced by a process, wherein
  • Undercut area is compressed and expanded in the rest of the mold cavity.
  • the injection mold according to the invention has two mold halves, which are opened when the injection molded part is removed in the usual way, that is to say perpendicular to the parting plane of the injection mold.
  • the injection mold has one or more slides, that is, tool parts with a direction of movement that deviates from the tool opening movement, that is, the movement of the two mold halves perpendicular to the parting plane.
  • the mold parts of the injection mold that is, the two mold halves and the one or more slides, define a mold cavity which, as the injection mold part has one or more undercut areas, correspondingly has one or more convex and one or more concave sides.
  • the injection mold according to the invention is designed such that a first mold half is provided on the side facing away from the undercut area of the mold cavity and that with the same a first slide is positively formed, which, after injection of the rigid fabric carrier layer and the foam plastic surface layer forming polymer melt in the decompression step of the polymer melt with the above mold half is movable in the same direction.
  • injection molded parts are produced that provide a smooth, seamless transition in the most critical region of the face edges at the transition to the undercut regions optical and mechanical properties.
  • the injection mold according to the invention has a further slide on the concave side of the mold cavity, which is designed to be pivotable out of the undercut region.
  • a simple opening of the injection mold is ensured, wherein first the second mold half, which is adjacent to the second slide, opens and then the second slide is pivoted out of the undercut area and thereby allows the removal of the finished injection molded part.
  • the second slide is designed to be lockable in order to be able to be fixed in particular against displacement by the pressure of the polymer melt injected into the mold cavity and forming the Schaurncosystoffoberfest für. This can be done, for example, with a bolt that is opened or closed as needed.
  • the injection mold is particularly suitable for the production of instrument panels for motor vehicles.
  • the sole FIGURE 1 shows a preferred embodiment of an injection mold according to the invention for producing an injection molded part with a rigid plastic carrier layer 1 and a foam plastic surface layer 2, with an undercut region 3, the injection mold being formed from two mold halves 4, 5 and two slides 6, 7 , wherein the first slider 6 on the convex side 9 and the second slider 7 on the concave side 10 of the mold cavity 8 is arranged.
  • the first slider 6 is positively formed with the first mold half 4, and the second slider 7 pivotally formed from the undercut portion 3 out.

Landscapes

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

Abstract

L'invention concerne un moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de matière plastique rigide (1) et d'une couche superficielle de plastique cellulaire expansé (2), avec au moins un secteur de contre-dépouille (3), comprenant deux moitiés de moules (4, 5) et un ou plusieurs coulisseaux (6,7) qui délimite un espace creux de moule (8) ayant un côté convexe (9) et un côté concave (10), caractérisé ce qu'un premier coulisseau (6) est prévu sur le côté convexe (9) de l'espace creux de moule (8), qui est réalisé en prise mécanique avec la première moitié de moule (4) opposée au secteur de contre-dépouille et avec lequel la fusion de polymères formant la couche superficielle de plastique cellulaire expansé (2) est mobile dans cette même direction dans l'étape de décompression, après injection de la couche de support de matière plastique rigide (1) et de la fusion de polymères formant la couche superficielle de plastique cellulaire expansé (2).
EP08707374A 2007-01-30 2008-01-29 Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé Withdrawn EP2125325A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08707374A EP2125325A1 (fr) 2007-01-30 2008-01-29 Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07101386 2007-01-30
EP08707374A EP2125325A1 (fr) 2007-01-30 2008-01-29 Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé
PCT/EP2008/000672 WO2008092634A1 (fr) 2007-01-30 2008-01-29 Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé

Publications (1)

Publication Number Publication Date
EP2125325A1 true EP2125325A1 (fr) 2009-12-02

Family

ID=39308023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08707374A Withdrawn EP2125325A1 (fr) 2007-01-30 2008-01-29 Moule d'injection pour la fabrication d'une pièce moulée par injection à partir d'une couche de plastique rigide et d'une couche superficielle de plastique cellulaire expansé

Country Status (3)

Country Link
US (1) US8221662B2 (fr)
EP (1) EP2125325A1 (fr)
WO (1) WO2008092634A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013165A1 (de) * 2009-03-13 2010-09-23 Daimler Ag Verfahren zur Herstellung eines eine Beschichtung aufweisenden Kunststoffbauteils
US9554554B2 (en) * 2014-10-10 2017-01-31 Hubbard Pet Helper Products, LLC Auto and truck pet chin-rest

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390213A (en) * 1957-08-15 1968-06-25 Ro Search Inc Method of manufacture of footwear
US4174988A (en) * 1976-01-30 1979-11-20 Chivas Products Ltd. Method and apparatus for making padded straps
FR2671765A1 (fr) * 1991-01-17 1992-07-24 Lebranchu Sa Procede de realisation d'une porte pour vehicule, notamment pour vehicule automobile ; sous-ensembles pour la mise en óoeuvre de ce procede et porte susceptible d'etre obtenue par cette mise en óoeuvre.
IT1315033B1 (it) * 2000-09-05 2003-01-27 G M P Poliuretani Spa Dispositivo per la produzione di manufatti poliuretanici, relativoprocedimento e manufatti poliuretanici cosi'ottenuti.
DE60227751D1 (de) * 2001-09-04 2008-09-04 Lear Corp Bedientafel für ein Fahrzeug
DE102004060964A1 (de) * 2004-12-17 2006-06-22 Rehau Ag + Co. Vorrichtung zum Spritzgießen eines Formteils mit Hinterschnitt
DE102005024776B4 (de) * 2005-05-31 2020-01-16 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines Kunststoffverbundteils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008092634A1 *

Also Published As

Publication number Publication date
US8221662B2 (en) 2012-07-17
WO2008092634A1 (fr) 2008-08-07
US20100038811A1 (en) 2010-02-18

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