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Method for producing a three-dimensional object and stereolithography machine

A technology of stereolithography and three-dimensional objects, which is applied to the processing of accessories of main materials, manufacturing tools, and additive manufacturing. It can solve the problems of increasing the total size of the machine and prolonging the total processing time of three-dimensional objects. The effect of overall size

Pending Publication Date: 2018-08-03
DWS SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The method described above has the disadvantage that the total processing time of the three-dimensional object is greatly extended due to the waiting time required for leveling the liquid resin after each layer of the object has solidified
[0021] This embodiment has the disadvantage that it requires a certain amount of space for the movement of the boxes, which accordingly increases the overall size of the machine

Method used

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  • Method for producing a three-dimensional object and stereolithography machine
  • Method for producing a three-dimensional object and stereolithography machine
  • Method for producing a three-dimensional object and stereolithography machine

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Embodiment Construction

[0046] referenced by figure 1 The method of the invention is described by a stereolithography machine generally indicated by 1, comprising a container 2 containing a fluid substance 3 suitable for solidification by exposure to predetermined radiation 4a.

[0047] From now on, the term "fluid substance" refers to a substance suitable for distribution in the container 2 such that its surface assumes a substantially planar shape, eg like that of a liquid or pasty substance.

[0048] The fluid substance 3 is preferably but not necessarily a photopolymer liquid resin and the predetermined radiation is light radiation.

[0049]In particular, said resin is of the so-called "hybrid" type comprising particles of ceramic or other material capable of increasing the mechanical resistance of the resin once it has set.

[0050] However, the methods and machines of the present invention may be used with any type of fluid substance that is capable of solidifying after exposure to the predet...

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Abstract

The invention is a method for producing a three-dimensional object in layers by means of a stereolithography machine comprising: a container containing a fluid substance suited to solidify through exposure to predefined radiation; a device suited to emit the predefined radiation and to solidify a layer of the fluid substance adjacent to the bottom of the container; a modeling plate suited to support the solidified layer and associated with an actuator device suited to move it perpendicular to the bottom of the container; a leveling device arranged in contact with the fluid substance, the leveling device comprising a paddle developed according to a longitudinal direction and having an edge facing the container's bottom and arranged inside the container. The method comprises the following operations: selectively irradiating the layer of fluid substance to obtain the solidified layer; extracting the solidified layer from the fluid substance; redistributing the fluid substance in the container by moving the leveling device so that they are passed between the modeling plate and the container.

Description

[0001] This application is a divisional case of the invention patent application 201280018961.4 filed by the applicant "DWS Co., Ltd." on April 19, 2012, entitled "Method for producing three-dimensional objects and stereolithography machine using said method" Apply. technical field [0002] The invention relates to a stereolithography method and a stereolithography machine applying the method. Background technique [0003] Stereolithography is well known for producing three-dimensional objects by the sequential deposition of layers of photosensitive liquid resins that can be polymerized by exposure to a light source. [0004] Specifically, each layer of resin is added to the preceding layer of the three-dimensional object to be produced and allowed to solidify selectively at points corresponding to the volume of the object itself. [0005] A stereolithography machine according to a known embodiment comprises a container adapted to contain said liquid resin and provided with...

Claims

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Application Information

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IPC IPC(8): B29C64/124B29C64/135B29C64/20B33Y10/00B33Y30/00
CPCB29C64/124B29C64/214B33Y10/00B33Y30/00B29C64/268B29C64/245B29C64/255B29C64/135B29C67/00B29C64/321B29C64/264B29C64/40
Inventor 埃托雷·毛里齐奥·科斯塔贝贝尔
Owner DWS SRL
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