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DE10022643A1 - Twin slush skin molding process for producing vehicle instrument panels, permits variation of process parameters during all molding stages - Google Patents

Twin slush skin molding process for producing vehicle instrument panels, permits variation of process parameters during all molding stages

Info

Publication number
DE10022643A1
DE10022643A1 DE2000122643 DE10022643A DE10022643A1 DE 10022643 A1 DE10022643 A1 DE 10022643A1 DE 2000122643 DE2000122643 DE 2000122643 DE 10022643 A DE10022643 A DE 10022643A DE 10022643 A1 DE10022643 A1 DE 10022643A1
Authority
DE
Germany
Prior art keywords
assemblies
slush skin
molding
double slush
twin
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Withdrawn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
DE2000122643
Other languages
German (de)
Inventor
Heiko Gabbert
Jochen Blaurock
Joerg Mohr
Katja Peters
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Priority to DE2000122643 priority Critical patent/DE10022643A1/en
Priority to EP01250116A priority patent/EP1149677A3/en
Publication of DE10022643A1 publication Critical patent/DE10022643A1/en
Withdrawn legal-status Critical Current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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • 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
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C33/46—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 using fluid pressure
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/18—Slush casting, i.e. pouring moulding material into a hollow mould with excess material being poured off
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/22—Making multilayered or multicoloured 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/46—Heating or cooling
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/52—Measuring, controlling or regulating
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3828—Moulds made of at least two different materials having different thermal conductivities

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Instrument Panels (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

A first solid plastic layer (18) is moulded against the surface of an electroformed tool and then a second expanded plastic layer (14) is formed onto the first layer. The inner surface of the second layer is shaped either by a tool punch or a plastic carrier (16) which remains as part of the molding. All molding, forming and demolding parameters can be influenced during the process stages. An Independent claim is made for a tool for producing a twin slush skin product (20) including outer (10) and inner (16) parts for forming the outer and inner contours of the product with a space between for expanding one (14) of the material layers and various means for influencing the parameters of the various process stages.

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung einer Doppelslushhaut mit den im Oberbegriff des Anspruchs 1 genannten Merkmalen.The invention relates to a device for producing a double slush skin with the The preamble of claim 1 mentioned features.

Aus der WO 96/3306 und WO 97/48537 sind Verfahren und Vorrichtungen zur Herstellung einer Doppelslushhaut bekannt. Diese Doppelslushhäute werden in Verbindung mit einem Instrumententräger unter anderem für automobile Instrumententafeln eingesetzt. Die Herstellung erfolgt in einer Galvanoform mit einer die Außenkontur der Doppelslushhaut bestimmenden Form. In diese Galvanoform wird ein Polymerpulver eingebracht. Durch Rotation der Galvanoform bildet sich an einer beheizbaren Innenwandung der Galvanoform aus dem Polymerpulver eine kompakte Formhaut. Anschließend wird der Galvanoform ein zweites, mit Treibmitteln beaufschlagtes Polymerpulver zugeführt. Durch erneute Rotation der Galvanoform bildet sich an der bereits vorhandenen kompakten Formhaut eine Schaumschicht. In die Galvanoform wird ein sogenannter Formstempel mit einer der Innenkontur der Doppelslushhaut definierten Kontur eingefahren. Danach beginnt der Schäumungsprozess durch Expansion des mit Treibmitteln beaufschlagten Polymerpulvers. Nach Beendigung des Schäumvorganges wird der Formstempel ausgefahren und die Doppelslushhaut entformt.Methods and devices for the production are known from WO 96/3306 and WO 97/48537 a double slush skin known. These double slush skins are combined with a Instrument carriers used for automotive instrument panels, among others. The Manufactured in an electroplated form with an outer contour of the double slush skin determining form. A polymer powder is introduced into this galvanoform. By Rotation of the electroform forms on a heatable inner wall of the electroform a compact molded skin from the polymer powder. Then the electroform is turned on second polymer powder charged with blowing agents. By renewed rotation the galvanoform forms on the already existing compact molded skin Foam layer. A so-called form stamp with one of the The inner contour of the double slush skin is retracted. Then the Foaming process by expansion of the polymer powder charged with blowing agents. After the foaming process has ended, the molding die is extended and the Double slush skin removed.

Die zur Erzeugung der Doppelslushhaut verwendete Galvanoform besteht in der Regel aus dünnwandigen, mit einer gleichbleibenden Wandstärke versehenen Formen, die im Galvanisierungsverfahren hergestellt wurden. Als Material für die Herstellung der Galvanoformen wird Nickel verwendet. Durch das Galvanisierungsverfahren lassen sich sehr formgenaue Galvanoformen herstellen. Nachteilig bei diesen Formen ist ihre geringe Stabilität hinsichtlich der auftretenden Druckkräfte bei der Herstellung der Doppelslushhaut. Durch die geringe Stabilität der Galvanoform besteht auch keine Möglichkeit, in der Galvanoform mechanisch betätigte Zusatzeinrichtungen anzuordnen.The galvanoform used to create the double slush skin usually consists of thin-walled shapes with a constant wall thickness, which in the Electroplating processes were produced. As a material for the production of the Nickel plating is used. The galvanizing process can be very Manufacture precise galvanoforms. A disadvantage of these shapes is their small size Stability with regard to the pressure forces that occur during the manufacture of the double slush skin. Due to the low stability of the galvanoform there is also no possibility in the To arrange electroforming mechanically operated additional devices.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zur Herstellung einer Doppelslushhaut zur Verfügung zu stellen, die eine Anordnung von mechanisch betätigbaren Zusatzeinrichtungen bei Einhaltung der Formgenauigkeit der herzustellenden Doppelslushhaut ermöglicht und gleichzeitig eine höhere Stabilität gegenüber den bekannten Vorrichtungen aufweist.The invention is therefore based on the object of a device for producing a To provide double slush skin, which is an arrangement of mechanically operated Additional devices while maintaining the shape accuracy of the manufactured  Double slush skin allows and at the same time a higher stability against the known devices.

Diese Aufgabe wird durch eine Vorrichtung zur Herstellung einer Doppelslushhaut mit den im Anspruch 1 genannten Merkmalen gelöst. Dadurch, dass die Galvanoform aus wenigstens zwei Baugruppen besteht, wird erreicht, dass die Stabilität der Galvanoform erhöht wird, wodurch eine Anordnung von mechanisch betätigten Baugruppen in der Galvanoform bei Einhaltung der Formgenauigkeit der herzustellenden Doppelslushhaut möglich ist.This object is achieved with a device for producing a double slush skin solved in claim 1 features. By making the electroform form there is at least two assemblies, the stability of the electroforming is achieved is increased, whereby an arrangement of mechanically operated assemblies in the Electroplating while maintaining the shape accuracy of the double slush skin to be produced is possible.

In einer bevorzugten Ausgestaltung der Erfindung sind die Baugruppen mit mechanischen Funktionen mechanisch betätigte Auswerfer. Durch die Anordnung der Auswerfer im Bereich der Galvanoform erfolgt ein leichterer Austrag der hergestellten Doppelslushhaut aus der Galvanoform.In a preferred embodiment of the invention, the assemblies are mechanical Functions mechanically operated ejector. The arrangement of the ejectors in the area The galvano form makes it easier to remove the double slush skin produced from the Galvanoform.

Weitere bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den übrigen, in den Unteransprüchen genannten Merkmalen.Further preferred refinements of the invention result from the others in the Characteristics mentioned subclaims.

Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand der zugehörigen Zeichnungen näher erläutert. Es zeigenThe invention is described in an exemplary embodiment based on the associated Drawings explained in more detail. Show it

Fig. 1 eine Schnittdarstellung der erfindungsgemäßen Vorrichtung und Fig. 1 is a sectional view of the device according to the invention and

Fig. 2 eine Variante der erfindungsgemäßen Vorrichtung. Fig. 2 shows a variant of the device according to the invention.

Die Herstellung einer Doppelslushhaut 18 erfolgt nach der an sich bekannten Doppelslushtechnik in einer Galvanoform 10. Dabei wird an der Innenkontur der Galvanoform 10 eine erste Kunststoffschicht erzeugt, an der anschließend eine zweite expandierende Kunststoffschicht erzeugt wird. Die Innenkontur der Doppelslushhaut 18 wird durch Einfahren einer definierten Gegenform erzeugt.A double slush skin 18 is produced in a galvanoform 10 according to the double slush technique known per se. In this case, a first plastic layer is produced on the inner contour of the electroform 10 , on which a second expanding plastic layer is subsequently produced. The inner contour of the double slush skin 18 is created by retracting a defined counter shape.

Gemäß Fig. 1 besteht die Galvanoform 10 zur Herstellung der Doppelslushhaut 18 aus mehreren Baugruppen mit unterschiedlichen Materialien. Im späteren sichtbaren Bereich der Oberfläche der herzustellenden Doppelslushhaut 18 besteht die Baugruppe 14 der Galvanoform 10 aus Nickel. Im späteren nicht sichtbaren Bereich der Oberfläche der herzustellenden Doppelslushhaut 18 besteht die Baugruppe 12 der Galvanoform 10 aus Edelstahl. Die nicht sichtbaren Bereiche der Oberfläche der Doppelslushhaut 18 sind in der Regel solche Bereiche, die später durch Anordnung von Zusatzeinrichtungen ausgestanzt oder ausgefräst werden. Die einzelnen aus Nickel bestehenden Baugruppen 14 und die aus Edelstahl bestehenden Baugruppen 12 werden durch Laserschweißen miteinander zu der Galvanoform 10 gefügt.According to FIG. 1, the galvanoform 10 for producing the double slush skin 18 consists of several assemblies with different materials. In the later visible region of the surface of the double slush skin 18 to be produced , the assembly 14 of the electroform 10 consists of nickel. In the later non-visible area of the surface of the double slush skin 18 to be produced , the assembly 12 of the electroform 10 consists of stainless steel. The regions of the surface of the double slush skin 18 which are not visible are generally those regions which are later punched out or milled out by arranging additional devices. The individual modules 14 made of nickel and the modules 12 made of stainless steel are joined together to form the electroform 10 by laser welding.

Durch die Verbindung der aus Edelstahl bestehenden Baugruppen 12, die eine hohe Festigkeit und Stabilität besitzen, mit den aus Nickel bestehenden Baugruppen 14, die sich insbesondere durch hohe Formgenauigkeit auszeichnen, zu einer Galvanoform 10 wird die Stabilität der Galvanoform 10, bei Realisierung einer hohen Maßgenauigkeit, erhöht. Dadurch besteht die Möglichkeit, im Bereich der aus Edelstahl bestehenden Baugruppen 12 Baugruppen mit zusätzlichen mechanischen Funktionen anzuordnen. Außerdem können die Baugruppen der Galvanoform 10 bei entsprechendem Bedarf durch Einbau zusätzlicher Teile verlängert oder durch Kürzung der Baugruppen, oder Teilen davon, verkürzt werden.By connecting the assemblies 12 made of stainless steel, which have a high strength and stability, with the assemblies 14 made of nickel, which are characterized in particular by high dimensional accuracy, to a galvanoform 10 , the stability of the electroforming 10 becomes, with the realization of a high dimensional accuracy , elevated. This makes it possible to arrange 12 assemblies with additional mechanical functions in the area of the assemblies made of stainless steel. In addition, the assemblies of the galvanoform 10 can be extended if necessary by installing additional parts or shortened by shortening the assemblies, or parts thereof.

In der Fig. 2 ist eine Variante der erfindungsgemäßen Vorrichtung dargestellt. Dabei sind im Bereich der aus Edelstahl bestehenden Baugruppen 12 Baugruppen mit zusätzlichen mechanischen Funktionen angeordnet. In diesem speziellen Fall sind Auswerfer 16 als Baugruppen mit zusätzlichen mechanischen Funktionen angeordnet. Die Auswerfer 16 haben die Aufgabe, nach Fertigstellung der Doppelslushhaut 18 diese aus der Galvanoform 10 auszutragen. In FIG. 2 is a variant of the device according to the invention. Here, 12 assemblies with additional mechanical functions are arranged in the area of the assemblies made of stainless steel. In this special case, ejectors 16 are arranged as assemblies with additional mechanical functions. The ejectors 16 have the task of removing the double slush skin 18 from the electroform 10 after completion.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

1010th

Galvanoform
Galvanoform

1212th

aus Edelstahl bestehende Baugruppe
assembly made of stainless steel

1414

aus Nickel bestehende Baugruppe
assembly made of nickel

1616

Auswerfer
Ejector

1818th

Doppelslushhaut
Double slush skin

Claims (9)

1. Vorrichtung zur Herstellung einer Doppelslushhaut mit einer die Außenkontur der Doppelslushhaut bestimmenden Galvanoform und einer die Innenkontur der Doppelslushhaut definierenden Gegenform, dadurch gekennzeichnet, dass die Galvanoform (10) aus wenigstens zwei Baugruppen besteht.1. Device for producing a double slush skin with a galvanoform that determines the outer contour of the double slush skin and a counterform that defines the inner contour of the double slush skin, characterized in that the galvanoform ( 10 ) consists of at least two assemblies. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Baugruppen aus unterschiedlichen Materialien bestehen.2. Device according to claim 1, characterized in that the assemblies different materials. 3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Baugruppen aus Nickel (14) und Edelstahl (12) bestehen.3. Device according to one of the preceding claims, characterized in that the assemblies consist of nickel ( 14 ) and stainless steel ( 12 ). 4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Baugruppen miteinander verschweißt sind.4. Device according to one of the preceding claims, characterized in that the assemblies are welded together. 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Baugruppen durch Laserschweißen miteinander verschweißt sind.5. Device according to one of the preceding claims, characterized in that the assemblies are welded together by laser welding. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die aus Nickel bestehenden Baugruppen (14) im sichtbaren Bereich der Oberfläche der herzustellenden Doppelslushhaut (18) angeordnet sind.6. Device according to one of the preceding claims, characterized in that the assemblies consisting of nickel ( 14 ) are arranged in the visible region of the surface of the double slush skin ( 18 ) to be produced. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die aus Edelstahl bestehenden Baugruppen (12) im später nicht sichtbaren Bereich der Oberfläche der herzustellenden Doppelslushhaut (18) angeordnet sind.7. Device according to one of the preceding claims, characterized in that the assemblies made of stainless steel ( 12 ) are arranged in the later invisible area of the surface of the double slush skin ( 18 ) to be produced. 8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass im Bereich der aus Edelstahl bestehenden Baugruppen (12) Baugruppen mit mechanischen Funktionen angeordnet sind.8. Device according to one of the preceding claims, characterized in that in the area of the assemblies made of stainless steel ( 12 ) assemblies with mechanical functions are arranged. 9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Baugruppen mit mechanischen Funktionen mechanisch betätigte Auswerfer (16) sind.9. Device according to one of the preceding claims, characterized in that the assemblies with mechanical functions are mechanically operated ejectors ( 16 ).
DE2000122643 2000-04-28 2000-04-28 Twin slush skin molding process for producing vehicle instrument panels, permits variation of process parameters during all molding stages Withdrawn DE10022643A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2000122643 DE10022643A1 (en) 2000-04-28 2000-04-28 Twin slush skin molding process for producing vehicle instrument panels, permits variation of process parameters during all molding stages
EP01250116A EP1149677A3 (en) 2000-04-28 2001-04-03 Method and apparatus for making a two-layer slush skin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000122643 DE10022643A1 (en) 2000-04-28 2000-04-28 Twin slush skin molding process for producing vehicle instrument panels, permits variation of process parameters during all molding stages

Publications (1)

Publication Number Publication Date
DE10022643A1 true DE10022643A1 (en) 2001-10-31

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DE2000122643 Withdrawn DE10022643A1 (en) 2000-04-28 2000-04-28 Twin slush skin molding process for producing vehicle instrument panels, permits variation of process parameters during all molding stages

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313811B3 (en) * 2003-03-21 2004-12-23 Sai Automotive Sal Gmbh Sintering tool for the production of plastic skins by powder sintering and process for the production of the skins

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169549A (en) * 1990-06-28 1992-12-08 Nickel Tooling Technology Inc. Method of producing nickel shell molds

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169549A (en) * 1990-06-28 1992-12-08 Nickel Tooling Technology Inc. Method of producing nickel shell molds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313811B3 (en) * 2003-03-21 2004-12-23 Sai Automotive Sal Gmbh Sintering tool for the production of plastic skins by powder sintering and process for the production of the skins

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