Three dimensional printing apparatus and method for controlling printing head thereof

Abstract

A three-dimensional printing apparatus and a method for controlling printing head thereof are provided. The method is used for controlling a moving path of a printing head of the three-dimensional printing apparatus and the method includes following steps. The printing head is controlled to form a layer object on a carrying surface according to three-dimensional model information. It is determined whether a cross-section parameter of the layer object is match to a small range condition. If the cross-section parameter of the layer object is match to the small range condition, the printing head is controlled to move toward a first direction far away from layer object according to position information of the layer object. The printing head is controlled to move toward a second direction close to the layer object.

Description

technical field [0001] The present invention relates to a printing device and a method for controlling a printing head, and in particular to a three-dimensional printing device and a method for controlling a printing head. Background technique [0002] In recent years, with the increasing development of science and technology, many different methods for constructing physical three-dimensional (3D) models by using additive manufacturing technologies such as layer-by-layer construction models have been proposed. Generally speaking, additive manufacturing technology converts the design data of a 3D model constructed by software such as computer aided design (CAD) into multiple thin (quasi-two-dimensional) cross-sectional layers that are stacked continuously. Based on this, the printing module of the three-dimensional printing device can usually move along the XY plane above the printing platform according to the spatial coordinates XYZ constructed by the design data of the 3D m...

AI Technical Summary

Problems solved by technology

Based on the above, if the cross-sectional area of ​​a single-layer object is too small, since the print head does not need to take time to move significantly, it may cause insufficient curing time for the single-layer object during printing

In other words, when printing a small-scale single-layer object, the print head may cover the molding material in a high-temperature molten state on the molding material that has not solidified to a certain extent on the printing platform, which will cause the printed three-dimensional object to be different from the actual expectation drop, thereby reducing the printing quality and printing yield of the three-dimensional printing device

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