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DE10022642A1 - 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
DE10022642A1
DE10022642A1 DE2000122642 DE10022642A DE10022642A1 DE 10022642 A1 DE10022642 A1 DE 10022642A1 DE 2000122642 DE2000122642 DE 2000122642 DE 10022642 A DE10022642 A DE 10022642A DE 10022642 A1 DE10022642 A1 DE 10022642A1
Authority
DE
Germany
Prior art keywords
slush skin
die
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Withdrawn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
DE2000122642
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 DE2000122642 priority Critical patent/DE10022642A1/en
Priority to EP01250116A priority patent/EP1149677A3/en
Publication of DE10022642A1 publication Critical patent/DE10022642A1/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Withdrawn legal-status Critical Current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
    • B29C33/44—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
    • 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
    • B29C33/38—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
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C43/183—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

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

Abstract

Die Erfindung betrifft eine Vorrichtung zur Herstellung einer Doppelslushhaut mit einem die Innenkontur der Doppelslushhaut bestimmenden Formstempel und einer die Außenkontur der Doppelslushhaut bestimmenden Gegenform. DOLLAR A Es ist vorgesehen, dass der Formstempel (10) aus einem fertigungstechnisch mechanisch leicht zu bearbeitenden Material, vorzugsweise aus Aluminium oder Kunstharz, besteht.The invention relates to a device for producing a double slush skin with a form stamp determining the inner contour of the double slush skin and a counter shape determining the outer contour of the double slush skin. DOLLAR A It is provided that the shaping stamp (10) consists of a material which is mechanically easy to machine, preferably aluminum or synthetic resin.

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 Formstempel zur Erzeugung der Innenkontur der in der Galvanoform hergestellten Doppelslushhaut sind aus Stahl gefertigt. Nachteilig dabei ist, dass bei vorgesehenen geringfügigen Änderungen an der Innenkontur der Doppelslushhaut aufwendige Feinanpassungen und Änderungen am Formstempel notwendig sind. Der Aufwand zur Bearbeitung von Formänderungen am Formstempel ist hoch. Die Maßgenauigkeit der durchzuführenden Änderungen ist schwer einhaltbar.The form stamps for creating the inner contour of those produced in the electroform Double slush skin are made of steel. The disadvantage here is that provided for minor changes to the inner contour of the double slush skin Fine adjustments and changes to the form stamp are necessary. The effort for Processing shape changes on the die is high. The dimensional accuracy of the Changes to be made are difficult to keep.

Der Erfindung liegt daher die Aufgabe zugrunde, bei Beibehaltung der Stabilität des Formstempels den Aufwand für notwendige Formkorrekturen bei der Feinanpassung beziehungsweise Formänderung des Formstempels zu reduzieren, sowie eine höhere Genauigkeit der durchzuführenden Korrekturen am Formstempel zu erzielen. The invention is therefore based on the object while maintaining the stability of the Form stamp the effort for necessary form corrections in the fine adjustment to reduce or change the shape of the die, as well as a higher Achieve accuracy of the corrections to be made on the die.  

Diese Aufgabe wird durch eine Vorrichtung zur Herstellung einer Doppelslushhaut mit den in dem Anspruch 1 genannten Merkmalen gelöst. Dadurch, dass der Formstempel zumindest bereichsweise aus einem fertigungstechnisch mechanisch leicht bearbeitbaren Material besteht, wird erreicht, dass Formänderungen an dem Formstempel schnell und mit einfachen Mitteln durchgeführt werden können. Der Aufwand für notwendige Feinanpassungen und Konturänderungen am Formstempel wird reduziert. Außerdem können notwendige Änderungen am Formstempel mit einer höheren Genauigkeit durchgeführt werden.This object is achieved by a device for producing a double slush skin with the in the features mentioned claim solved. In that the form stamp at least in some areas from a mechanically easily machinable material exists, it is achieved that changes in shape on the form stamp quickly and with simple means can be carried out. The effort for necessary Fine adjustments and contour changes to the form stamp are reduced. Moreover can make necessary changes to the form stamp with greater accuracy be performed.

In einer bevorzugten Ausgestaltung der Erfindung besteht ein Kern des Formstempels aus einem stabilen Material und die Oberfläche des Formstempels im Bereich der Doppelslushhaut aus einem fertigungstechnisch mechanisch leicht bearbeitbaren Material. Das hat zur Folge, dass bei Beibehaltung der Stabilität des Formstempels notwendige Feinanpassungen und Konturänderungen am Formstempel mit einfachen Mitteln durchgeführt werden können.In a preferred embodiment of the invention, a core of the die consists of a stable material and the surface of the die in the area of Double slush skin made of a mechanically easy to process material. The result of this is that if the shape of the die is maintained, it is necessary Fine adjustments and contour changes to the form stamp with simple means can be carried out.

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 Ausführungsbeispielen anhand der zugehörigen Zeichnungen näher erläutert. Es zeigenThe invention is described below in exemplary embodiments based on the associated Drawings explained in more detail. Show it

Fig. 1 eine Schnittdarstellung durch eine Vorrichtung zur Herstellung einer Doppelslushhaut und Fig. 1 is a sectional view through a device for producing a double slush skin and

Fig. 2 die Vorrichtung gemäß Fig. 1 in einer weiteren Ausführungsvariante. Fig. 2 shows the device of FIG. 1 in a further embodiment.

Die Vorrichtung zur Herstellung einer Doppelslushhaut 14 besteht gemäß Fig. 1 aus einer die Außenkontur der Doppelslushhaut 14 bestimmenden Galvanoform 12 und einem die Innenkontur der Doppelslushhaut 14 definierenden Formstempel 10. Der Formstempel 10, der als Negativform der Innenkontur der herzustellenden Doppelslushhaut 14 entspricht, besteht aus einem fertigungstechnisch mechanisch leicht zu bearbeitenden Material. Dadurch kann eine Oberfläche 11 des Formstempels 10 mit einfachen Mitteln mechanisch leicht bearbeitet werden. Entsprechend notwendige Formänderungen, Feinanpassungen beziehungsweise Korrekturen können an dem Formstempel 10 mit einer hohen Maßgenauigkeit durchgeführt werden. Das hat gleichzeitig zur Folge, dass der Aufwand für die durchzuführenden notwendigen Korrekturen gesenkt wird. Als besonders günstig hat sich herausgestellt, den Formstempel 10 aus Aluminium oder aus Kunstharz herzustellen. Diese Materialien lassen sich mechanisch gut bearbeiten und genügen den Bedingungen beim Herstellungsprozess der Doppelslushhaut 14.According to FIG. 1, the device for producing a double slush skin 14 consists of a galvanoform 12 which determines the outer contour of the double slush skin 14 and a form stamp 10 which defines the inner contour of the double slush skin 14 . The form stamp 10 , which corresponds to the inner contour of the double slush skin 14 to be produced as a negative form, consists of a material which is mechanically easy to process in terms of production technology. As a result, a surface 11 of the die 10 can be easily machined using simple means. Correspondingly necessary changes in shape, fine adjustments or corrections can be carried out on the die 10 with a high degree of dimensional accuracy. At the same time, this means that the effort required for the necessary corrections is reduced. It has turned out to be particularly favorable to produce the die 10 from aluminum or from synthetic resin. These materials can be machined well and meet the conditions in the manufacturing process of the double slush skin 14 .

In Fig. 2 ist eine Variante des erfindungsgemäßen Formstempels 10 dargestellt. Entsprechend der Ausführungsform besteht der Formstempel 10 aus einem stabilen Kern 16, dessen Oberflächenbereich 18 im Bereich der Doppelslushhaut 14 aus einem fertigungstechnisch mechanisch leicht zu bearbeitenden Material besteht. Damit können bei Gewährleistung der Stabilität des Formstempels 10 entsprechend notwendige Formänderungen, Feinanpassungen beziehungsweise Korrekturen an dem Formstempel 10 ebenfalls mit einer hohen Maßgenauigkeit und mit einfachen Mitteln durchgeführt werden. Der Kern 16 des Formstempels 10 besteht dabei vorteilhafterweise aus Stahl, während die Oberfläche 18 des Formstempels 10 aus einer Aluminium- oder Kunstharzbeschichtung besteht. In Fig. 2 shows a variant of the forming die 10 of the invention is illustrated. According to the embodiment, the shaping punch 10 consists of a stable core 16 , the surface area 18 of which in the area of the double slush skin 14 consists of a material which is mechanically easy to machine in terms of production technology. Thus, while ensuring the stability of the die 10, corresponding changes in shape, fine adjustments or corrections to the die 10 can also be carried out with a high degree of dimensional accuracy and with simple means. The core 16 of the die 10 is advantageously made of steel, while the surface 18 of the die 10 consists of an aluminum or synthetic resin coating.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

1010th

Formstempel
Form stamp

1111

Oberfläche
surface

1212th

Galvanoform
Galvanoform

1414

Doppelslushhaut
Double slush skin

1616

Kern des Formstempels
Core of the form stamp

1818th

Oberflächenbereich des Formstempels
Surface area of the die

Claims (7)

1. Vorrichtung zur Herstellung einer Doppelslushhaut mit einem die Innenkontur der Doppelslushhaut bestimmenden Formstempel und einer die Außenkontur der Doppelslushhaut bestimmenden Gegenform, dadurch gekennzeichnet, dass der Formstempel (10) zumindest bereichsweise aus einem fertigungstechnisch mechanisch leicht bearbeitbaren Material besteht.1. Device for producing a double slush skin with a form stamp determining the inner contour of the double slush skin and a counterform determining the outer contour of the double slush skin, characterized in that the form stamp ( 10 ) consists at least in regions of a material which is easy to machine mechanically. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Formstempel (10) aus Aluminium besteht.2. Device according to claim 1, characterized in that the shaping stamp ( 10 ) consists of aluminum. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Formstempel (10) aus Kunstharz besteht.3. Device according to claim 1, characterized in that the shaping stamp ( 10 ) consists of synthetic resin. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Kern (16) des Formstempels (10) aus einem stabilen Material und ein Oberflächenbereich (18) des Formstempels (10) aus einem fertigungstechnisch mechanisch leicht bearbeitbaren Material besteht.4. The device according to claim 1, characterized in that a core ( 16 ) of the forming die ( 10 ) consists of a stable material and a surface area ( 18 ) of the forming die ( 10 ) consists of a mechanically easily machinable material. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Kern (16) des Formstempels (10) aus Stahl besteht.5. The device according to claim 4, characterized in that the core ( 16 ) of the die ( 10 ) consists of steel. 6. Vorrichtung nach Anspruch 4 und 5, dadurch gekennzeichnet, dass der Oberflächenbereich (18) des Formstempels (10) aus Aluminium besteht.6. The device according to claim 4 and 5, characterized in that the surface area ( 18 ) of the die ( 10 ) consists of aluminum. 7. Vorrichtung nach Anspruch 4 und 5, dadurch gekennzeichnet, dass der Oberflächenbereich (18) des Formstempels (10) aus Kunstharz besteht.7. The device according to claim 4 and 5, characterized in that the surface area ( 18 ) of the die ( 10 ) consists of synthetic resin.
DE2000122642 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 DE10022642A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2000122642 DE10022642A1 (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
DE2000122642 DE10022642A1 (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
DE10022642A1 true DE10022642A1 (en) 2001-10-31

Family

ID=7641370

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000122642 Withdrawn DE10022642A1 (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

Country Status (1)

Country Link
DE (1) DE10022642A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

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