Improvement device, applicable to 3D printing machine, of DLP projector

Abstract

The invention provides an improvement device, applicable to a 3D printing machine, of a DLP projector. The improvement device is characterized in that the DLP projector is fixed to a linear guide rail through a DLP fixing connecting part, and the linear guide rail is integrally fixed to a machine case through bolts; compared with hanging adjustable mounting, the mounting method has the advantages that integral assembly is stable and reliable, and relative motion of parts during the transportation process and damage caused by relative motion are avoided; the linear guide rail is driven by a motor, a projection lens is driven by a micro motor, and the linear guide rail and the projection lens are controlled by one chipset; and initially measured parameters and position measurement data of a sensor or limiting switch are input, and the lens automatically zooms when the size of follow-up projection images changes.

Description

technical field [0001] The invention relates to the field of projectors, in particular to an improved device for a DLP projector suitable for a 3D printer. Background technique [0002] With the maturity of additive manufacturing technology, 3D printers are becoming more and more common. In addition to industrial-grade printers for cutting-edge industries, civilian printers are entering the market. DLP technology can be used for 3D printing, but existing DLP projection devices are not specially developed for 3D printing, and most of them have a projection elevation angle. If the DLP is simply fixed and installed, when adjusting the size of the projection surface, in order to make the projection surface centered on the resin tank, the only way to adjust the inclination angle of the DLP is to adjust the inclination angle of the DLP. Once the DLP projection light path is not perpendicular to the projection surface, the projected picture will tend to Trapezoidization, which eve...

AI Technical Summary

Problems solved by technology

DLP technology can be used for 3D printing, but the existing DLP projection equipment is not specially developed for 3D printing, most of them have a projection elevation angle

If the DLP is simply fixed and installed, when adjusting the size of the projection surface, in order to make the projection surface centered on the resin tank, the only way to adjust the inclination angle of the DLP is to adjust the inclination angle of the DLP. Once the DLP projection light path is not perpendicular to the projection surface, the projected picture will tend to Trapezization, which eventually leads to deformation of the printed item

In addition, there is also the disadvantage of manual focus adjustment every time the projected image size is changed.

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