Abstract: The present invention relates to a device for manufacturing three-dimensional models by means of a 3D printing process, whereby a build platform for application of build material is provided and a support frame is arranged around the build platform, to which said support frame at least one device for dosing the particulate material and one device for bonding the particulate material is attached via the guiding elements and the support frame is moveable in a Z direction, which essentially means perpendicular to the base surface of the build platform. In so doing, the device provides a material feeding device having a particle material container to supply particulate material in batches from the storage area to the dosing apparatus and to do so with the least possible amount of shearing forces and without significant interaction with the atmosphere.

Abstract: A dosing system for filling a receptacle with a predetermined desired weight of flowable bulk material. The system has a main dosing apparatus for charging the receptable to an extent less than the predetermined weight and an additional dosing apparatus for complementally charging each receptacle to an extent equal to the deviation between the desired weight and the actual weight resulting from the charging by the main dosing apparatus. The additional dosing apparatus has a dispensing wheel having a plurality of cells of predetermined volume. There is further provided a movably supported shroud member having a shroud face extending along a circumferential portion of the wheel and separating an inlet chamber from an outlet chamber. The position of the shroud member is adjustable for determining a minimum clearance between the shroud face and the periphery of the wheel. A spring urges the shroud member towards the wheel for allowing a resilient yielding movement of the shroud member away from the wheel.