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Stereo lithography apparatus and prototyping method thereof

A molding device and light-curing technology, applied in the field of light-curing, can solve problems such as increasing system complexity, and achieve the effect of improving precision and increasing overshooting process

Active Publication Date: 2016-10-26
广州市弘蕊医疗器械有限公司
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  • Application Information

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Problems solved by technology

Among them, the semi-permeable building plate has special requirements on the material, and at the same time, the polymerization inhibitor must be provided through the building plate, which further increases the complexity of the system

Method used

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  • Stereo lithography apparatus and prototyping method thereof
  • Stereo lithography apparatus and prototyping method thereof
  • Stereo lithography apparatus and prototyping method thereof

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Embodiment Construction

[0033] The main component of the curing liquid 14 is usually a resin or gel containing a monomer or a prepolymer, and the curing liquid 14 also contains a photoinitiator (also called a photosensitizer), and the photoinitiator absorbs the radiation of the curing light The energy generates active free radicals or ionic radicals, thereby initiating the polymerization, cross-linking and grafting reactions of the solidified liquid 14, making it change from liquid to solid in a few seconds. The curing light is usually ultraviolet light, but also other light rays, such as visible light, or higher-energy rays, such as X-rays.

[0034] When the solidified liquid 14 contains a polymerization inhibitor (such as oxygen), even if it is irradiated by curing light, the solidified liquid will not solidify or requires a larger dose of irradiation to solidify. The polymerization inhibition mechanism of oxygen has already been discussed publicly and will not be repeated here.

[0035] The prese...

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Abstract

The invention belongs to the technical field of photo-curing and relates to stereo lithography apparatus and a prototyping method thereof. The apparatus comprises a bottom plate, a spacing mounting plate, a light transmitting plate, a curing liquid container containing curing liquid and a vertical support. A linear motor and a guide rail are installed through the vertical support, a prototyping base is arranged on the guide rail in a sliding mode through a moving sliding block, and the prototyping base can slide up and down above the light transmitting plate. The apparatus is characterized in that a transparent controlled-release polymerization inhibitor layer is arranged between the light transmitting plate and the curing liquid, and the controlled-release polymerization inhibitor layer contains polymerization inhibitors and controlled-release layer carriers. The apparatus and method have the beneficial effects that the light transmitting plate is provided with the chemical controlled-release polymerization inhibitor layer, the polymerization inhibitors are released slowly, the photo-curing liquid making direct contact with the polymerization inhibitors cannot be cured, and therefore a cured part can be separated from the light transmitting plate and the curing process of the next layer is facilitated.

Description

technical field [0001] The invention belongs to the technical field of photocuring, and relates to a photocuring rapid prototyping device and a molding method thereof. Background technique [0002] As an important branch of rapid prototyping technology, SLA technology has attracted more and more attention due to its high speed and high precision. Recently, the high-speed continuous light-curing rapid prototyping represented by Carbon3D's CLIP technology has pushed the prototyping speed to a new height. [0003] Chinese patent application CN 201480008364 "Continuous liquid mesophase printing" discloses a method of forming a three-dimensional object comprising providing a carrier and an optically transparent element having a build surface, the carrier and the build surface defining a build region between them; A polymerizable liquid fills the build area; the build area is irradiated through the optically transparent element to form a solid polymer from the polymerizable liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00B33Y10/00B33Y30/00B33Y40/00
CPCB33Y10/00B33Y30/00B33Y40/00
Inventor 耿得力
Owner 广州市弘蕊医疗器械有限公司
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