UV photo-cure 3D rapid forming system and printing method thereof

Abstract

The invention provides a UV photo-cure 3D rapid forming system and further provides a printing method of the UV photo-cure 3D rapid forming system. The UV photo-cure 3D rapid forming system comprises a printing curing device, a printing bin and a powder supply device. The printing curing device comprises a UV lamp curing unit and a UV glue bonding unit, the printing bin is provided with a work table for bonding and curing forming of printing powder, and the powder supply device is used for storing and conveying the printing powder to the printing bin and comprises a powder supply bin body and a powder laying roller. The UV photo-cure 3D rapid forming system and the printing method thereof have the advantages that according to the system, the UV photo-cure technology is applied to three-dimensional printing, the problems that a three-dimensional-printing forming workpiece is low in strength and needs secondary curing aftertreatment, for example, the workpiece is steeped by glue again are solved, the input cost is reduced, the production period is shortened, and the production efficiency is improved; operation is convenient, and the powder laying efficiency is high; and a powder layer is subjected to primary curing before UV curing and thus is better in supporting intensity than loose powder, the supporting effect on the subsequent cured workpiece is better, and forming is facilitated.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a UV light curing 3D rapid prototyping system and a printing method thereof. Background technique [0002] 3DP technology is today's 3D printing. It was developed by Emanual Sachs et al., Massachusetts Institute of Technology. The 3DP process is similar to the SLS process, using powder materials for forming, such as ceramic powder and metal powder. The difference is that the material powder is not connected by sintering, but the section of the part is "printed" on the material powder with an adhesive (such as silica gel) through the nozzle. The strength of the parts bonded with adhesive is low, and post-processing is required, such as soaking in glue again. [0003] UV light curing is a technology that uses UV light sources to cure UV coatings. UV coatings can be UV paint, UV inks, UV glue, etc. UV light means that ultraviolet light reacts chemically with photosensitizers ...

AI Technical Summary

Problems solved by technology

However, during production, supports are needed around the cured part, but at present it is only a simple support for printing powder, and the effect is poor

[0005] However, the current 3D printing equipment adopts the structure of the powder supply bin on one side. The powder spreading roller needs to return after one powder spreading and wait for the next action, that is, two actions are required to complete one powder spreading, which is relatively inefficient and The powder roller is prone to mistakes during the back-and-forth process, which will damage the flattened material layer

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