A powder spreading device for a 3D printer

Abstract

The invention discloses a powder spreading device of a 3D printer, which includes a powder dropping part, a powder feeding part and a powder spreading part; the powder dropping part includes a powder dropping hopper and a powder storage bin, and the powder storage bin includes an upper end plate, a side baffle, an adjusting plate after powder dropping, Side plate, adjusting plate before powder falling, screw shaft and powder falling component fixing bracket, one end of side plate is provided with powder falling motor; powder feeding part includes two powder feeding component fixing brackets, powder feeding driving shaft, powder feeding driven shaft bearing There is a powder feeding conveyor belt between the powder feeding driven shaft and the powder feeding driving shaft, and a powder feeding motor is arranged on the side of the powder feeding component fixing bracket; the powder spreading part includes two powder spreading component fixing brackets , powder spreading beam, powder spreading roller bearing block and powder spreading motor seat, powder spreading roller is rotationally connected between powder spreading roller bearing block and powder spreading motor seat, and powder spreading motor seat is fixedly equipped with powder spreading motor. Through the above arrangement, the powder is not easy to block the powder outlet, and the powder can evenly cover the entire powder spreading path at the same time.

Description

technical field [0001] The invention relates to 3D printing equipment, in particular to a powder spreading device for a 3D printer. Background technique [0002] 3D printers, also known as three-dimensional printers, are rapid prototyping equipment that construct three-dimensional entities by layer-by-layer printing based on digital model files. At present, 3D printing technology has gradually matured, developed rapidly and has gradually entered various fields. 3D printers can use three-dimensional printing technology (Three-dimensional printing, 3DP), also known as droplet jet bonding, to achieve printing of different materials, such as using lamination Sand, polystyrene (Polystyrene, PS), precision casting wax powder, nylon, ceramic powder and other powder materials are used as printing powder. Three-dimensional jet printing technology is a kind of additive manufacturing technology, which means that a layer of powder materials (coated sand, wax powder, polystyrene, nylon ...

AI Technical Summary

Problems solved by technology

[0003] However, when the current 3D printers using the top-down powder method print with small-particle powders with poor fluidity such as wax film, there is a problem that when the printing powder falls into the printing cylinder, it is easy to block the powder-feeding port or cannot evenly and simultaneously cover the entire surface. The problem of the powder laying path affects the printing effect

Images