Photo-curing 3D forming system adopting LED array micro-projection light source

Abstract

The invention provides a photo-curing 3D forming system adopting an LED array micro-projection light source. LEDs in the LED array light source are equidistantly distributed in the y direction and equidistantly staggered in the x direction. Lower LED array light sources are gathered to form a micro-projection beam array with dense distribution through a lens array group and a photomask plate to facilitate quick scanning and curing of a part model with small structural size. Moreover, single LEDs in the LED array light source are independently controlled through computer-single chip microcomputer parallel communication, the number of LEDs needing to be driven in the LED array light source is regulated in real time through a computer according to two-dimensional section information of each layer in the scanning process, and the scanning and curing are finished with an X-Y mobile platform controlling the micro-projection beam array to move in the X-Y horizontal direction. By taking original photo-curing 3D forming equipment as an application basis, the photo-curing forming system can improve the manufacturing efficiency and reduce the cost while guaranteeing the prototype manufacturing accuracy.

Description

technical field [0001] The present invention relates to a photocuring molding system in the field of photocuring molding technology, in particular to a photocuring 3D molding system using an LED array micro-projection light source. Background technique [0002] With the development of CAD / CAM technology, the principle of material accumulation can be used to realize the rapid manufacture of workpiece prototypes. Among them, the light curing method has become the most popular rapid prototyping method because of its high molding accuracy and 120% material utilization. The light source is one of the most critical equipment in the rapid prototyping technology of light curing. Its type, structure, emission wavelength range, power level, and light stability during long-term use will directly affect the success or failure of curing and the quality of curing. Curing efficiency, etc., while domestic and foreign are mainly committed to the development of ultraviolet photosensitive mate...

AI Technical Summary

Problems solved by technology

However, a single row of LEDs converges into a large square spot area of ​​20mmX20mm, and each row is equidistantly arranged to form a continuous irradiated light strip with a length of 10cm. In addition, the light source system can only adjust the irradiance of the overall light strip to take into account various Curing materials require ultraviolet radiation, and the irradiation area is large, which does not consider the production of small-sized parts with fine structures

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