Platform automatic leveling device for 3D printing machine

Abstract

The invention provides a platform automatic leveling device for a 3D printing machine. The platform automatic leveling device comprises a platform lower plate and a platform, wherein the platform is arranged above a platform lower plate; four telescopic rod step motors are arranged on the platform lower plate and are correspondingly arranged in the four corner positions of the platform; telescopicrods of the telescopic rod step motors are in contact with the lower surface of the platform; a guide hole is formed in one side of each telescopic step motor arranged on the platform lower plate; aguide rod in gap matching with the guide hole is arranged in the guide hole; the top end of the guide rod is fixedly connected with the platform; a spring for pushing the guide rod to downwards move sleeves the guide rod; a microswitch installing hole is respectively formed in a position of each of four corners of the platform; a micro contact switch is arranged in the microswitch installing hole;the upper end of a touch rod of the micro touch switch is aligned with the upper surface of the platform; each micro touch switch controls the corresponding telescopic rod step motor through one circuit board. The platform automatic leveling device has the advantages that the structure is simple; the platform of the printing machine is subjected to automatic leveling; the model printing precisionis improved.

Description

technical field [0001] The present invention mainly relates to the technical field of 3D printers, in particular to fused lamination 3D printers, and in particular to a platform automatic leveling device for 3D printers. Background technique [0002] In the process of making a model of a 3D printer, it is necessary to start making a model on a platform, and it is generally required that the upper surface of the platform should be kept parallel to the plane on which the nozzle moves on the X and Y axes. [0003] During the printing process, there will be a problem that the horizontal plane of the platform and the horizontal plane where the 3D printer nozzle moves are not parallel to each other. The usual solution is to use a software algorithm for leveling, and install a switch on the nozzle to touch the designated position of the four corners of the platform, so as to record the distance between the four corners of the touch position and the nozzle. During the printing proc...

AI Technical Summary

Problems solved by technology

During the printing process, the Z-axis is constantly adjusted to eliminate the distance difference, but in this way, the Z-axis needs to be moved all the time during the printing process. This continuous Z-axis movement will cause the vibration of the printing platform and affect the printing accuracy of the model. unfavorable

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