Automatic scraper cleaning device of SLA3D printer and SLA3D printer

Abstract

The invention discloses an automatic scraper cleaning device of a SLA3D printer and the SLA3D printer. The automatic scraper cleaning device is arranged on a scraper support of the SLA3D printer, the device comprises a guide mechanism fixedly arranged on the side, away from a scraper, of the scraper support, a sliding mechanism movably arranged on the guide mechanism, a cleaning mechanism fixedly connected to the sliding mechanism and a driving mechanism fixedly connected to the guide mechanism or the cleaning mechanism. The cleaning mechanism specifically comprises a cleaning support fixedly connected to the sliding mechanism, a base arranged on the side, close to the scraper, of the cleaning support, and a pair of cleaning blades arranged on the side, close to a first motor support and the side, away from the first motor support, of the base. The cleaning blades tightly attached to the adsorption surface of the scraper is arranged on the cleaning mechanism, the width of the adsorption surface of the scraper is defined as d, the length of a cutting edge of each cleaning blade is D, D is greater than or equal to 2d and less than 2.2d, and the cleaning blades are double-edge blades; and the driving mechanism drives the sliding mechanism to reciprocate along the adsorption surface of the scraper so as to drive the cleaning blades to clean the adsorption surface of the scraper.

Description

technical field [0001] The invention relates to the field of SLA3D printers, in particular to an SLA3D printer automatic cleaning scraper device and an SLA3D printer. Background technique [0002] 3D printer is a rapid prototyping process, which uses layer-by-layer accumulation to produce three-dimensional models layer by layer. In the 3D printing process, it is necessary to coat photosensitive resin or photosensitive ceramic slurry layer by layer. When the viscosity of the material liquid is high, defects such as faults, incomplete coating or uneven thickness are prone to occur. In order to avoid the above defects, each layer is usually coated with a doctor blade mechanism to ensure the continuity, integrity and uniformity of thickness of the coating. [0003] However, the industrial SLA 3D printers on the market that use vacuum adsorption scrapers will have residual cured resin on the scraper adsorption surface after printing for a long time. If they are not cleaned in ti...

AI Technical Summary

Problems solved by technology

[0003] However, the industrial SLA 3D printers on the market that use vacuum adsorption scrapers will have residual cured resin on the scraper adsorption surface after printing for a long time. If they are not cleaned in time, the printing accuracy will be affected during the printing and smearing process, and even the pot will collapse Phenomenon

[0004] There are two existing ways to clean the surface of the scraper. The first is to put your hand into the resin and use a small spatula to scrape off the residual resin on the scraper surface. Scraper cuts are not safe, but also very troublesome

The second is to disassemble the scraper for cleaning. Although this method can effectively clean the surface of the scraper, reassembling the scraper requires recalibration, which is troublesome to install and requires a lot of work.

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