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Vorrichtung und Verfahren zur Beschickung einer Materialschicht auf eine Bauplattform oder auf wenigstens eine auf der Bauplattform befindlichen Materialschicht zur Herstellung eines Gegenstandes im Wege eines generativen Herstellungsverfahrens

Apparatus for feeding material coating on building platform or material coating present on building platform for producing object in way of generative production process, comprises belt that tightly circulates around rigid shaped bodies
 
: Grzesiak, A.; Refle, O.; Richter, H.; Lenk, R.

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Frontpage ()

DE 102009024334 A: 20090609
DE 102009024334 A: 20090609
B22F0003
B29C0067
German
Patent, Electronic Publication
Fraunhofer IPA ()

Abstract
(A1) Beschrieben werden eine Vorrichtung sowie ein Verfahren zur Beschickung einer Materialschicht auf eine Bauplattform oder auf wenigstens eine auf der Bauplattform befindlichen Materialschicht zur Herstellung eines Gegenstandes im Wege eines generativen Herstellungsverfahrens, die relativ zu einem Materialreservoir und der Bauplattform laengs einer Bewegungsebene linearbeweglich gelagert ist, zu der das Materialreservoir und die Bauplattform orthogonal auslenkbar sind. Die Erfindung zeichnet sich dadurch aus, dass ein um wenigstens zwei Formkoerper gespannt umlaufendes Band vorgesehen ist, das zumindest bereichsweise an den Formkoerpern anliegt, dass ein das Band in Umlauf um die wenigstens zwei Formkoerper versetzender Antrieb vorgesehen ist, dass das Band in Bandlaengserstreckung um die wenigstens zwei Formkoerper einen relativ zu wenigstens einem Formkoerper fest zuordenbaren Bandabschnitt aufweist, der waehrend der Linearbewegung von dem Materialreservoir zur Bauplattform zumindest bereichsweise mit dem Material in Beruehrung tritt, und dass dem Bandabschnitt ein Bandflaechenbereich zuordenbar ist, der gegenueber der Bewegungsebene um einen Winkel ? geneigt ist.

 

DE 102009024334 A1 UPAB: 20110101 NOVELTY - The apparatus for feeding a material coating on a building platform or a material coating present on a building platform for the production of an object in the way of a generative production process, where the object is linearly movable mounted relative to a material reservoir and the building platform along a moving plane, to which the material reservoir and the building platform are deflectable in an orthogonal manner, comprises a belt (13) that tightly circulates around two rigid shaped bodies and fits onto the shaped bodies in an areawise manner, and a drive. DETAILED DESCRIPTION - The apparatus for feeding a material coating on a building platform or a material coating present on a building platform for the production of an object in the way of a generative production process, where the object is linearly movable mounted relative to a material reservoir and the building platform along a moving plane, to which the material reservoir and the building platform are deflectable in an orthogonal manner, comprises a belt (13) that tightly circulates around two rigid shaped bodies and fits onto the shaped bodies in an areawise manner, and a drive transferring the belt in circulation around the shaped bodies. The belt has a belt portion (17), which is fixedly arrangeable relative to one of the shaped bodies, in belt longitudinal extension around the shaped bodies, where the belt portion areawisely contacts with the material during the linear movement from the material reservoir to the building platform. A belt surface area is assigned to the belt portion and is inclined at an angle ( alpha ) against the moving plane. The shaped bodies are formed as cylinder rollers (11, 12, 12') with roller axes running parallel to each other. The shaped bodies are formed as rigid sliding bodies, where the belt is slidably guided to a partial surface of the sliding bodies that serves for supporting the belt surface area inclined at the angle of alpha . The shaped body has a partial surface that serves for supporting the belt surface area inclined at the angle of alpha . The roller bodies, over which the belt is rollably mounted, are provided on the partial surface of the shaped body. The inclination of the belt surface area at the angle ( alpha ) is adjustable by using cylinder rollers differently sized in roller diameter. One of the cylinder rollers is pivotably mounted relative to the other cylinder roller. The drive is formed as motorically driven cylinder roller. The belt has a coating made of polytetrafluoroethylene. The belt surface turned to the material has a nanocoating. The belt has continuous pores. The belt portion, which contacts with the material, has a belt rolling direction turned away from the moving plane. A vibrating unit is integrated in one shaped body for generating vibrations. An INDEPENDENT CLAIM is included for a method for feeding a material coating on a building platform or a material coating present on a building platform for the production of an object in the way of a generative production process. USE - Apparatus for feeding a material coating on a building platform or a material coating present on a building platform for the production of an object in the way of a generative production process. ADVANTAGE - The apparatus is capable of simply and effectively feeding the material coating on the building platform without material shrinkage or shape distortion.

: http://publica.fraunhofer.de/documents/N-159224.html