Patent EP-2193863-A1 (EP)
Inventor: SCHOENEBORN HENNER
IPC: B22F3/105
Filed: 2008-12-02
Abstract: The carrier arrangement (10) comprises a housing element (12), a carrier (18) arranged in the housing element, a first sealing element (40) for sealing the carrier against the housing element, a drive device for displacing the carrier in the housing element, arranged in the area of the carrier or carrier component (24), and a second sealing element for sealing the carrier or the component of the drive device against the housing element. The carrier is arranged to receive raw material powders and/or a workpiece produced from the raw material powder. The carrier arrangement (10) comprises a housing element (12), a carrier (18) arranged in the housing element, a first sealing element (40) for sealing the carrier against the housing element, a drive device for displacing the carrier in the housing element, arranged in the area of the carrier or carrier component (24), and a second sealing element for sealing the carrier or the component of the drive device against the housing element. The carrier is arranged to receive raw material powders and/or a workpiece produced from the raw material powder during the operation of a plant for the production of workpieces through application of powder layer with electromagnetic radiation or particle radiation. The first sealing element comprises a base body made of elastic deforming material. The base body is prestressed through a spring element in a desired form. The spring element is arranged in a groove that is formed in the base body in the area of a surface adjacent to a sealing area of the first sealing element. The first sealing element extends itself between the carrier or the carrier component and the housing element around an external circumference of the carrier or the carrier component. The first sealing element is partially entered in a groove that is formed in a circumference area of the carrier or the carrier component. The base body of the first sealing element consists of carbon fibers. The base body of the first sealing element is equipped with a further groove adjacent in the area of a further surface adjacent to the sealing area of the first sealing element. The spring element comprises U-shaped cross-section. A groove sealing element for sealing the groove and/or the further groove is arranged in the groove and/or the further groove that is formed in the base body of the first sealing element. The base body of the first sealing element is equipped in the area of the sealing surface of the first sealing element with sealing lips. The first sealing element is arranged in an area of the carrier that is turned to a process area of the plant for the production of workpiece, in mounting condition of the carrier arrangement. The drive device is turned away from a process area of the plant for the production of workpiece through the application of the powder layer with electromagnetic radiation or particle radiation. The second sealing element consists of felt material and is received partially in a further groove that is formed in a circumference area of the carrier of the carrier component or a component of the drive device for displacing the carrier in the housing element.