Powder paving device for quick forming equipment

Abstract

The invention discloses a powder paving device for quick forming equipment. The powder paving device comprises a worktable, a powder paving roller, a first pushing plate, a second pushing plate and a driving device; rotating shafts are respectively arranged at the two ends of the powder paving roller, and are horizontally connected with connecting plates; the first pushing plate and the second pushing plate are vertically fixed at the two ends of the connecting plates; motors are arranged on the connecting plates; output shafts of the motors penetrate through the connecting plates to be connected with the rotating shafts; two parallel slide rails are arranged on the upper surface of the worktable; the lower surfaces of the connecting plates are arranged in the slide rails through slide rods; the driving device is arranged on one side of the worktable; a connecting rod in the driving device is connected with the slide rods; one side part, far from the powder paving roller, of the first pushing plate is inwards inclined, and forms an included angle alpha with the horizontal plane; and one side part, far from the powder paving roller, of the second pushing plate is inwards inclined, and also forms the included angle alpha with the horizontal plane. The powder paving device overcomes the problems of incapability of uniformly paving raw material powder on the worktable and easy generation of irregularity of a paved powder machine of a powder paving device in the prior art.

Description

technical field [0001] The invention relates to the field of rapid prototyping equipment, in particular to a powder spreading device for rapid prototyping equipment. Background technique [0002] Selective laser sintering (SLS for short) is a widely used rapid prototyping technology. It uses solid powder materials as raw materials, and uses laser to scan the cross-section of a three-dimensional solid layer by layer to complete prototype manufacturing. It is not limited by the complexity of the part shape. , does not require any tooling and molds, and has a wide range of applications. [0003] In the rapid prototyping equipment, the powder feeding device pushes the raw material powder onto the workbench, and the powder spreading device needs to spread the raw material powder evenly on the workbench for the laser device to perform laser forming operations. If it is not normal, it will lead to unstable absorption of the laser by the powder bed, which will directly affect the q...

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the purpose of the present invention is to overcome the problem that the powder spreading device in the prior art cannot evenly lay the raw material powder on the workbench, and the powder bed after laying is easy to be uneven, so as to provide a The powder spreading device used on rapid prototyping equipment can evenly spread the raw material powder on the workbench to ensure the quality of printed products

Images