DE10316158A1 - Slush skin, is formed using a galvanic mould which is heated using a fluid medium, and stored thermal energy - Google Patents
Slush skin, is formed using a galvanic mould which is heated using a fluid medium, and stored thermal energy Download PDFInfo
- Publication number
- DE10316158A1 DE10316158A1 DE2003116158 DE10316158A DE10316158A1 DE 10316158 A1 DE10316158 A1 DE 10316158A1 DE 2003116158 DE2003116158 DE 2003116158 DE 10316158 A DE10316158 A DE 10316158A DE 10316158 A1 DE10316158 A1 DE 10316158A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- electroform
- heated
- mould
- removal
- 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- Withdrawn
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
- 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
- B29C41/02—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
- B29C41/34—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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Slushhaut unter Verwendung einer Galvanoform, die unter Verwendung eines Fluids als Heizmedium erwärmbar ist.The The present invention relates to a method for producing a Slush skin using an electroforming form, using of a fluid can be heated as a heating medium is.
Vorrichtungen und Verfahren zur Herstellung von dünnen Formhäuten, sogenannten Slushhäuten, sind aus dem Stand der Technik bekannt. Diese Verfahren werden beispielsweise zur Herstellung von komplexeren Formteilen für den Innenausbau von Kraftfahrzeugen mit vergleichsweise geringer Materialstärke angewandt. Man bezeichnet das Slushverfahren auch als Rotationssintern oder Rotationsgießen. Dabei verwendet man im allgemeinen eine sogenannte Galvanoform, die man mit einem Kunststoffpulvermaterial beaufschlagt. Der Galvanoform wird Wärme zugeführt, so dass eine dünne Kunststoffschicht aufschmilzt und an der Formoberfläche anhaftet. Während dieses Verfahrens wird die Vorrichtung um ein oder zwei Achsen gedreht, so dass sich das Pulver an der Formoberfläche gleichmäßig verteilt. Man erhält dann durch Gelieren des Kunststoffpulvers an der Formoberfläche eine entsprechend geformte Slushhaut.devices and processes for producing thin molded skins, so-called slush skins known from the prior art. These procedures are, for example for the production of more complex molded parts for the interior of motor vehicles applied with comparatively low material thickness. One calls the slush process also as rotary sintering or rotary casting. there one generally uses a so-called galvanoform, which one charged with a plastic powder material. The electroform will Supplied heat, so that a thin Plastic layer melts and adheres to the mold surface. While this method, the device is rotated around one or two axes, so that the powder is evenly distributed on the mold surface. You then get by gelling the plastic powder on the mold surface appropriately shaped slush skin.
Die
Erwärmung
der Galvanoform kann mittels eines Fluids erfolgen, beispielsweise
verwendet man nach dem Stand der Technik Öl oder auch Heißluft. In
der
Aus dem Stand der Technik sind Slushanlagen bekannt, bei denen die Galvanoform mit Heißluft erwärmt wird. Derartige Anlagen umfassen in der Regel mehrere Stationen, wobei das Erwärmen der Galvanoform mittels Heißluft zunächst in einem Vorwärmeofen erfolgt. Danach wird die heiße Galvanoform der eigentlichen Slush-Station zugeführt, in der ein thermoplastisches pulverförmiges Kunststoffmaterial aus einem Pulverkasten in die Form überführt wird. Bei bekannten Slushanlagen dieses Typs mit Erwärmung der Galvanoform durch Heißluft gibt es insbesondere Probleme mit der Temperaturführung bei dem Arbeitsschritt des Bepulverns der Galvanoform. Nach der Entnahme aus dem Heizofen strahlt die Galvanoform viel Wärme durch die Oberfläche ab, was zu einem Temperaturverlust führt. Zusätzlich ist durch den eigentlichen Pulverprozess ein weiteres Absinken der Temperatur gegeben. Dies bedeutet, dass die Galvanoformen vor der Entnahme aus dem Ofen überhitzt werden müssen. Die Temperatur fällt während des Bepulverungsprozesses weitgehend kontinuierlich ab. Dadurch wird das Material ungleichmäßig aufgeschmolzen. Materialien mit engem Temperaturfenster lassen sich nur schwer oder gar nicht verarbeiten.Out Slush plants are known from the prior art, in which the electroforming is heated with hot air. Such systems usually include several stations, where the warming the galvanoform using hot air first in a preheating oven he follows. Then the hot Galvanoform fed to the actual slush station, in which a thermoplastic powdery Plastic material is transferred from a powder box into the mold. In known slush systems of this type with heating of the electroform hot air there are problems with temperature control in particular the step of powdering the electroform. After removal the galvanoform radiates a lot of heat from the heater through the surface, which leads to a temperature loss. In addition is a further drop in temperature due to the actual powder process given. This means that the electroplating before removal overheated from the oven Need to become. The temperature drops during the Powdering process largely continuously. This will the material melted unevenly. Materials with a narrow temperature window can be difficult or do not process at all.
Die Aufgabe der vorliegenden Erfindung besteht darin, ein Verfahren zur Herstellung einer Slushhaut der eingangs genannten Art zur Verfügung zu stellen, bei dem eine stabilere Temperaturführung gewährleistet ist.The The object of the present invention is a method available for the production of a slush skin of the type mentioned place where a more stable temperature control is guaranteed.
Die Lösung dieser Aufgabe liefert ein erfindungsgemäßes Verfahren der eingangs genannten Gattung mit den kennzeichnenden Merkmalen des Hautanspruchs. Durch die erfindungsgemäße Maßnahme ist es möglich, gespeicherte Energie gleichmäßig oder nach Bedarf an die Galvanoform abzugeben, etwa ähnlich wie bei einer Wärmflasche. Es kann dabei erreicht werden, zum Beispiel mit einer vergleichsweise preisgünstigen Luftslushanlage hochwertige Slushhäute herzustellen. Ohne die erfindungsgemäße zusätzliche Erwärmung erhält man während des Slushprozesses eine Temperaturkurve, bei der die Temperatur zunächst über einen Sollwert hinaus erhöht wird und danach mit der Zeit wieder kontinuierlich abfällt, um schließlich unter die gewünschte Sollwerttemperatur zu fallen. Beim Nachgelieren des Pulvermaterials steigt die Temperatur in der Regel wieder an. Bei dem erfindungsgemäßen Verfahren mit zusätzlicher Erwärmung liegt die Anfangstemperatur vorzugsweise nur wenig über dem Sollwert und die Abweichung von der Sollwerttemperatur wird während des ganzen Prozesses minimal gehalten. Vorzugsweise ist der Temperaturverlauf so, dass dieser während der einzelnen Schritte des Slushprozesses jeweils weitgehend konstant gehalten wird.The solution an object of the invention provides this task mentioned genus with the characteristic features of the skin claim. By the measure according to the invention it possible stored energy evenly or to be delivered to the electroplating form as required, similar to a hot water bottle. It can be achieved, for example, with a comparative one cheapest Air slush system to produce high quality slush skins. Without that additional according to the invention warming receives one during of the slush process is a temperature curve at which the temperature first over one Setpoint increased and then gradually decreases again over time finally under the desired one Setpoint temperature to drop. When gelling the powder material the temperature usually rises again. In the method according to the invention with additional warming the initial temperature is preferably only slightly above the setpoint and the deviation from the setpoint temperature is during the whole process kept to a minimum. The temperature profile is preferably so that this during the individual steps of the slush process are largely constant is held.
Vorzugsweise wird dabei so vorgegangen, dass die Galvanoform zunächst in einem geeigneten Ofen erwärmt wird, wobei die Temperatur etwas über die erforderliche Solltemperatur gebracht wird. Die unerwünschte Abkühlung insbesondere durch Abgabe von Strahlungswärme nach der Entnahme aus dem Ofen wird durch eine Zusatzerwärmung verhindert, so dass die Temperatur der Galvanoform in dieser Phase weitgehend konstant gehalten wird, vorzugsweise etwa auf der Sollwerttemperatur. In dem anschließenden Prozess des Bepulverns wird die Temperatur wiederum vorzugsweise durch eine zusätzliche Erwärmung weitgehend konstant gehalten. Während des nachfolgenden Nachgelierens sollte die Temperatur nur relativ geringfügig ansteigen, so dass nach Möglichkeit die Sollwerttemperatur nur unwesentlich unterschritten wird.Preferably the procedure is such that the galvanoform is initially in heated in a suitable oven , the temperature being slightly above the required set temperature brought. The unwanted cooling down in particular by emitting radiant heat after removal from the Oven is heated by additional heating prevents, so the temperature of the electroform in this phase is kept largely constant, preferably at about the setpoint temperature. In the following The temperature of the powdering process is again preferred by an additional warming kept largely constant. While In the subsequent gelling, the temperature should only be relative slight rise so that if possible the setpoint temperature is only slightly undercut.
Die in den Unteransprüchen genannten Merkmale betreffen bevorzugte Weiterbildungen der erfindungsgemäßen Aufgabenlösung. Weitere Vorteile der Erfindung ergeben sich aus der nachfolgenden Detailbeschreibung.The features mentioned in the subclaims relate to preferred developments of the Task solution according to the invention. Further advantages of the invention result from the following detailed description.
Nachfolgend wird die vorliegende Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Zeichnungen näher beschrieben. Dabei zeigenfollowing The present invention is illustrated by means of exemplary embodiments described in more detail on the accompanying drawings. Show
Zunächst wird
auf
Hier
setzt nun die erfindungsgemäße Verbesserung
ein.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003116158 DE10316158A1 (en) | 2003-04-09 | 2003-04-09 | Slush skin, is formed using a galvanic mould which is heated using a fluid medium, and stored thermal energy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003116158 DE10316158A1 (en) | 2003-04-09 | 2003-04-09 | Slush skin, is formed using a galvanic mould which is heated using a fluid medium, and stored thermal energy |
Publications (1)
Publication Number | Publication Date |
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DE10316158A1 true DE10316158A1 (en) | 2004-10-28 |
Family
ID=33038949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003116158 Withdrawn DE10316158A1 (en) | 2003-04-09 | 2003-04-09 | Slush skin, is formed using a galvanic mould which is heated using a fluid medium, and stored thermal energy |
Country Status (1)
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DE (1) | DE10316158A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140124984A1 (en) * | 2011-01-24 | 2014-05-08 | Johnson Controls Interiors Gmbh & Co. Kg | Method and device for producing multi-color molded skins |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3524214A1 (en) * | 1985-07-06 | 1987-01-08 | Happich Gmbh Gebr | Process and device for producing hollow, thin-walled, flexible plastics articles from plastisol |
DE29519164U1 (en) * | 1995-09-01 | 1996-02-01 | Ip Industriepatent Ges Fuer Di | Device for heating a mold |
DE19927954A1 (en) * | 1999-01-22 | 2000-12-21 | C Tech Ltd | Centrifugal casting of glass fiber-reinforced pipes, takes place in rotary molds in succession, heated externally by water to assure rapid setting of selected catalyst-resin system for maximum production rate without fissuring |
-
2003
- 2003-04-09 DE DE2003116158 patent/DE10316158A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3524214A1 (en) * | 1985-07-06 | 1987-01-08 | Happich Gmbh Gebr | Process and device for producing hollow, thin-walled, flexible plastics articles from plastisol |
DE29519164U1 (en) * | 1995-09-01 | 1996-02-01 | Ip Industriepatent Ges Fuer Di | Device for heating a mold |
DE19927954A1 (en) * | 1999-01-22 | 2000-12-21 | C Tech Ltd | Centrifugal casting of glass fiber-reinforced pipes, takes place in rotary molds in succession, heated externally by water to assure rapid setting of selected catalyst-resin system for maximum production rate without fissuring |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140124984A1 (en) * | 2011-01-24 | 2014-05-08 | Johnson Controls Interiors Gmbh & Co. Kg | Method and device for producing multi-color molded skins |
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R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: B29C0041040000 Ipc: B29C0041460000 |
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Representative=s name: GULDE & PARTNER PATENT- UND RECHTSANWALTSKANZL, DE |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |