A precise and compact 3D printer powder supply mechanism and transmission method

Abstract

A precision compact 3D printer powder supply mechanism and transmission method, including a lower cylinder body, a spline assembly, a screw and a motor, a support is provided above the lower cylinder body; the spline assembly includes a spline shaft and Spline sleeve, the spline sleeve is fixed on the bottom surface of the support member, the spline shaft can be inserted into the spline sleeve for axial movement, and one end of the spline shaft protrudes from the lower cylinder body The screw rod includes a screw rod and a screw nut, the screw nut is arranged in the lower cylinder body, the screw nut is fixed on the bottom end of the spline shaft, the screw rod and the screw rod The nut is threaded, the screw rod extends into the spline shaft, and the screw rod is connected with the servo motor. The invention uses the connection between the screw rod and the spline assembly, and the transmission between the two. The powder supply mechanism has high linear motion accuracy, which meets the transmission accuracy requirements of the 3D printer. In addition, extending the screw rod into the spline assembly has the advantage that the arrangement space of the transmission structure is small.

Description

technical field

[0001] The invention relates to the technical field of printer powder supply mechanism, in particular to a precise and compact 3D printer powder supply mechanism and a transmission method. Background technique

[0002] 3D printer, also known as three-dimensional printer, is a kind of accumulative manufacturing technology, that is, a machine of rapid prototyping technology. It uses bondable materials such as special waxes, powdered metals or plastics to create three-dimensional objects by printing layers of bonded materials. During the printing process of 3D printers, the transmission method of screw drive and guide rail slider is usually used. This type of structure needs to install a series of guide rails and slider mechanisms, which is suitable for large-scale equipment and has enough space to set up the transmission structure. Therefore, it is also difficult for some equipment with small size and insufficient space to use the transmission structure of sc...

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