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Stereolithography method for producing a three-dimensional object, comprising a movement according to which a supporting surface for said object intermittently approaches the bottom of a container, and stereolithography machine using said method

A technology of stereolithography and supporting surfaces, applied in 3D object support structures, processing data acquisition/processing, manufacturing tools, etc., can solve the problems of container wear, container damage, inconvenient replacement costs, etc., to reduce processing time and reduce continuous the effect of time

Active Publication Date: 2014-11-05
DWS SRL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] Another disadvantage is that the aforementioned thrusts create fatigue stresses on the bottom of the container, which lead to wear and damage of the container over time
[0025] Therefore involves the need to periodically replace the container, with the inconvenience of having to stop production and bear the cost of replacement

Method used

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  • Stereolithography method for producing a three-dimensional object, comprising a movement according to which a supporting surface for said object intermittently approaches the bottom of a container, and stereolithography machine using said method
  • Stereolithography method for producing a three-dimensional object, comprising a movement according to which a supporting surface for said object intermittently approaches the bottom of a container, and stereolithography machine using said method
  • Stereolithography method for producing a three-dimensional object, comprising a movement according to which a supporting surface for said object intermittently approaches the bottom of a container, and stereolithography machine using said method

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Embodiment Construction

[0044] refer to figure 1 The method for producing a three-dimensional object which is the subject of the invention is described in a stereolithography machine denoted as a whole by 1 .

[0045] The stereolithography machine 1 described above comprises a container 2 for containing a liquid substance 3 suitable to be solidified by exposure to predetermined radiation 4 .

[0046] The machine 1 also comprises means 5 suitable for emitting said predetermined radiation 4 capable of selectively irradiating a layer 6 of liquid substance 3 having a predetermined thickness and arranged adjacent to the bottom 2a of the container 2 .

[0047] Irradiation of the liquid layer 6 results in the formation of a corresponding solidified layer 6' of the object, as figure 2 shown schematically in .

[0048] Preferably, but not necessarily, said predetermined radiation 4 is a laser beam passed through the above-mentioned radiation device 5 , which is selectively directed at an area corresponding...

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Abstract

The invention is a method for producing a three-dimensional object in layers through stereolithography, comprising the following operations: moving a supporting surface (6a, 7a) near the bottom (2a) of a container (2) containing a liquid substance (3), so as to arrange it in a predefined operating position (17); selectively irradiating a layer (6) of liquid substance (3) with predefined radiation (4), in such a way as to solidify it against the supporting surface (6a, 7a). The approaching movement (11) comprises a plurality of approaching moves (12, 12a, 12b, 12c) having corresponding predefined lengths (13, 13a, 13b, 13c), spaced by corresponding intermediate stops (14, 14a, 14b) for corresponding predefined time intervals (15, 15a, 15b), the intermediate stops (14, 14a, 14b) being carried out when the supporting surface (6a, 7a) is at least partially immersed in the liquid substance (3).

Description

technical field [0001] The invention relates to a stereolithography method for the production of three-dimensional objects and a stereolithography machine using said method. Background technique [0002] Stereolithography machines are known comprising a container for a liquid substance adapted to be solidified by exposure to predetermined radiation, usually optical radiation. [0003] The aforementioned radiation is generated by a radiation emitting device selectively irradiating a layer of the liquid substance having a predetermined thickness and positioned such that it is adjacent to the bottom of the container to freeze this layer. [0004] The machine also includes a molding plate facing the bottom of the container and provided with a support surface for the three-dimensional object to be obtained. [0005] The aforementioned molding plate is associated with moving means adapted to move the molding plate according to a direction perpendicular to the bottom of the contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
CPCB29C67/0088B29C67/0066B33Y30/00B29C64/135B29C64/232B29C64/30B29C64/264B29C64/124B29C64/393B29C64/129B33Y10/00B29C67/04B33Y50/02
Inventor 罗伯托·福尔图纳托塞尔焦·泽内雷
Owner DWS SRL
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