Powder spreading and scraping device

Abstract

The invention belongs to the technical field of 3D printing powder scraping, and particularly relates to a powder spreading and scraping device which comprises a bottom plate, wherein a vertical plate is perpendicularly connected to the upper end face of the bottom plate, an opening is formed in the side wall of the vertical plate, a moving plate is arranged in the opening in a matched mode, a driving structure used for driving the moving plate to move is arranged on the vertical plate, a mounting plate is arranged on the lower side of the moving plate, an adjusting structure for driving the mounting plate to move up and down is arranged on the upper end face of the moving plate, a connecting body is connected to the lower end face of the mounting plate, and a set of scrapers are longitudinally connected to the lower end face of the connecting body. By means of the connecting body made of a soft material and the scraper divided into the multiple modules, the device can integrate the advantages of the soft scraper and the advantages of the hard scraper, the powder scraping effect is improved, and the printing success rate is improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing powder scraping, in particular to a powder spreading and scraping device. Background technique [0002] 3D printing (3D printing, also known as additive manufacturing, layered manufacturing) is a technology based on digital model files, using bondable materials such as powdered metal or plastic, to construct objects by layer-by-layer printing. In the process of 3D printing, it is necessary to use a powder scraping device to scrape powder, and the powder scraping device needs to use a scraper. [0003] There are currently two types of scrapers: hard scrapers and soft scrapers. Soft scrapers have blades made of silicon, rubber, or soft carbon fibers (brushes) that spread powder from one side of the build platform to the other. If the soft squeegee collides with the metal part being printed, its elasticity makes it possible to pass through the deformed part. This means that a softer squeegee i...

AI Technical Summary

Problems solved by technology

The surface of the carrying platform is equipped with a guide rail, the surface of the guide rail is provided with and installed with a rack, the guide rail is equipped with a driving mechanism, and a powder scraping mechanism is welded on one side of the driving mechanism, and the powder scraping mechanism It includes a support arm, the other end of the support arm is equipped with a connecting plate through bolts, a linear bearing is installed on the surface of the connecting plate, and a forming cylinder is provided on the surface of the frame bottom plate, and the frame bottom plate is mounted on the forming cylinder. There are two uprights welded on the side, and a guide rod is welded between the two uprights, and the guide rod is slidably connected with the linear bearing arranged on one side of the support arm; The process is prone to collision damage, and at the same time, the inconvenience of the powder spreading and scraping device in the prior art can be adjusted accurately

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