SLA (Stereo Lithography Apparatus) 3D printer

Abstract

The invention discloses an SLA (Stereo Lithography Apparatus) 3D printer. The SLA 3D printer comprises a rack, a housing, a display screen, a light path adjustment module, a trough, a scraper module, a bottom plate fixing assembly, a heavy block module, an L-shaped support platform, a backing plate and a controller. According to SLA 3D printer, the light path adjustment module is controlled by the controller, so that laser is perpendicularly emitted to the liquid level of the trough from top to bottom, and liquid photosensitive resin is cured and formed under the action of laser; the scraper module is installed on the bottom plate fixing assembly, and a scraper is driven to do a reciprocating motion in the trough by the bottom plate fixing assembly, so that layer-by-layer printing is realized, and an ideal printing effect is obtained; the L-shaped support platform is fixedly connected with a screen plate, and the screen plate is driven to perpendicularly move up and down in the trough by a motor, so that the distance of one layer is reduced per layer which is printed; and the liquid level of the trough is changed by lifting a heavy block of the heavy block module, so that the height of the liquid level in the trough is kept after the screen plate descends, and the fluctuation of the liquid level is reduced during printing, thereby obtaining a good printing effect.

Description

technical field [0001] The invention relates to the field of 3D printers, in particular to an SLA-based 3D printer. Background technique [0002] SLA (Stereo lithography Apparatus) technology is laser three-dimensional engraving technology. It is the crystallization of machinery, laser, photochemistry, software and control technology. Based on the principle that the photosensitive resin is solidified by ultraviolet light, the computer controls the laser to scan and solidify the liquid photosensitive resin layer by layer. The cross-section of each layer of solidification is obtained by layering the three-dimensional CAD model software of the part, until finally the physical prototype of the photosensitive resin is obtained. [0003] The existing 3D printer (laser rapid prototyping machine) based on the SLA principle is relatively large in shape and structure, and generally has a symmetrical structure between the left and right parts. The left side is the processing and form...

AI Technical Summary

Problems solved by technology

The disadvantage is that the overall structure of the equipment is large, and the internal space utilization rate is low; the appearance occupies a large area, and the small model also needs a large space to be placed; it brings difficulties to the packaging and transportation of the equipment and increases the cost; it is difficult for the equipment to enter and exit the room , because the length and width of the existing equipment exceeds the conventional room door width, it is necessary to destroy the wall or modify the door; due to the large structure of the existing equipment, the processing cost is high; because it is divided into two parts, the shape is not beautiful

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