Device for manufacturing models layer by layer
First Claim
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1. A device for pattern building in layers, comprisinga frame defining a workspace within the frame;
- a workpiece platform for defining a building area, and being positioned within the frame and being height adjustable during pattern building for building a metal casting mold in layers;
a storage bin situated in a workspace above the workpiece platform and serving as a source of a feed material including a moulding sand;
a material feeder for delivering the feed material including the moulding sand from the storage bin to the workpiece platform;
a feed material spreader including means for balancing out sag of the spreader along its length; and
a dispenser for fluidly spraying a liquid agent to the moulding sand, which is delivered to the workpiece platform, for chemically hardening a resin and moulding sand admixture,wherein the building area is essentially rectangular, and has a pair of longer edges and a pair of shorter edges when viewed from the top, and the spreader is arranged to translate along at least one of the shorter edges of the rectangular cross-section of the workpiece platform.
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Abstract
The invention relates to a device for manufacturing models layer by layer. The inventive device comprises a frame (1), a vertically adjustable and exchangeable workpiece platform (17)m and a device for feeding the material comprising a coating applicator (4). Said coating applicator (4) serves to feed material from a storage container to a process zone above the workpiece platform (17), said workpiece platform (17) being fixed in the device at least during manufacturing of a model. The workpiece platform (17) is introduced on the one side of the device and extracted on the other side of the device.
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Citations
17 Claims
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1. A device for pattern building in layers, comprising
a frame defining a workspace within the frame; -
a workpiece platform for defining a building area, and being positioned within the frame and being height adjustable during pattern building for building a metal casting mold in layers; a storage bin situated in a workspace above the workpiece platform and serving as a source of a feed material including a moulding sand; a material feeder for delivering the feed material including the moulding sand from the storage bin to the workpiece platform; a feed material spreader including means for balancing out sag of the spreader along its length; and a dispenser for fluidly spraying a liquid agent to the moulding sand, which is delivered to the workpiece platform, for chemically hardening a resin and moulding sand admixture, wherein the building area is essentially rectangular, and has a pair of longer edges and a pair of shorter edges when viewed from the top, and the spreader is arranged to translate along at least one of the shorter edges of the rectangular cross-section of the workpiece platform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device for building a metal casting patterns in layers, comprising:
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a frame defining a rectangular workspace within the frame; a workpiece platform for defining a building area, which platform is interchangeable with at least one other workpiece platform, being positioned within the frame and being height adjustable during operation for building a metal casting patterns in layers; at least one motor for adjusting the height of the workpiece platform during operation; a storage bin situated in a workspace above the workpiece platform and serving as a source of a feed material including a moulding sand; a material feeder for vibratingly delivering the feed material including the moulding sand from the storage bin to the workpiece platform; a steel strip feed material spreader including means for balanced out to prevent sag of the spreader along its length; and an ink-jet dispenser for spraying an agent to the moulding sand on the workpiece platform, for chemically hardening a resin and moulding sand admixture, wherein the building area is essentially rectangular, and has a pair of longer edges and a pair of shorter edges when viewed from the top, and the spreader is arranged to translate along at least one of the shorter edges of the rectangular cross-section of the workpiece platform.
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Specification