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3D reverse image printing method and apparatus

A printing head, curing reaction technology, applied in the field of manufacturing three-dimensional models, can solve problems such as harming the printing head

Active Publication Date: 2017-02-15
VOXELJET AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of mixture has to be done prior to the application operation and is therefore hazardous to the printhead as the mixture may harden in the printhead before it is applied

Method used

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  • 3D reverse image printing method and apparatus
  • 3D reverse image printing method and apparatus
  • 3D reverse image printing method and apparatus

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Experimental program
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Effect test

Embodiment approach

[0081] The system according to the invention makes heavy use of powder-based 3D printing. Extended mechanical engineering to meet the requirements according to the invention.

[0082] The device according to the invention comprises a coater (2). The applicator is used to apply pre-mixed granular material or liquid-containing granular material to the build platform (3) and smooth ( figure 2 (a)). The particulate material applied may comprise a wide range of materials. For example, sand, ceramic powder, metal powder, plastic, wood particles, fibrous material, cellulose, lactose powder, etc. may be used. The flow characteristics of these materials can be very different. Different applicator technologies allow layering from dry, free-flowing powders and sticky firm powders to liquid-based dispersions. The height of the powder layer (4) is determined by the build platform (3). It is lowered after applying a layer. During the next coating operation, the resulting volume is f...

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PUM

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Abstract

Disclosed are a method and an apparatus for making three-dimensional models, wherein joining / binding material is applied layer by layer to a construction platform (102), and agents (100) which delay the joining of the applied material or altogether prevent the applied material from joining are selectively applied.

Description

technical field [0001] The present invention relates to a method and apparatus for the manufacture of three-dimensional models, wherein a bonding / bonding material is applied in layers to a build platform and a medium is selectively applied which delays or completely prevents the bonding of the applied material. Background technique [0002] For example, in EP0431924B1 a method for manufacturing three-dimensional objects from computer data is described. In this method, particulate material is deposited in thin layers onto a platform and, using a printhead, a binder material is selectively printed on top of the particulate material. The particle regions on which the binder is printed stick together and cure under the influence of the binder and, if necessary, of an additional hardener. The platform is then lowered a distance of one layer thickness into the build cylinder and provided with a new layer of granular material which is also printed as described. These steps are re...

Claims

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Application Information

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IPC IPC(8): B29C67/00B33Y70/00B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00B33Y70/00B29C64/165B29C64/35B29C64/153B28B1/001B41J2/01
Inventor 因戈·埃德雷尔丹尼尔·冈瑟弗洛里安·孟格尔
Owner VOXELJET AG
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