Automatic leveling device, automatic leveling method and three-dimensional printer

Abstract

The invention discloses an automatic leveling device, an automatic leveling method and a three-dimensional printer. The automatic leveling device comprises a mounting rack, a laser emitting module and a laser receiving module, the mounting rack is arranged above a hot bed, and a nozzle is arranged on the mounting rack; the laser emitting module is arranged on the mounting rack and is used for emitting a laser beam to the hot bed; and the laser receiving module is arranged on the mounting rack and used for receiving the laser beam emitted by the laser emitting module and reflected by the hot bed when the distance between the nozzle and the hot bed is a first design distance. According to the automatic leveling device, the problems that in the prior art, a leveling nut and a proximity sensor need to be close to the hot bed during leveling, the detection distance is short, and the reliability is low can be solved, the leveling precision, stability and fault tolerance of the hot bed are improved, and the safety of the hot bed, the nozzle and the automatic leveling device is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional printers, and in particular relates to an automatic leveling device, an automatic leveling method and a three-dimensional printer. Background technique [0002] Existing 3D printers need to perform hot bed leveling before printing, that is, adjust the distance between the nozzle and the hot bed to the thickness of a piece of paper, so that the model can be firmly adhered to the hot bed. In the related technology, the following two leveling methods are usually used for leveling the hot bed, one is manual leveling, that is, install leveling nuts on the four corners of the hot bed, and rotate the leveling nuts to make the nozzle The distance from the hot bed is the thickness of a piece of paper; the other is to use sensors for automatic leveling, through strain gauges, proximity switches, etc., select determinant matrix points on the hot bed, detect and save each detection point in turn Of...

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Problems solved by technology

[0004] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides an automatic leveling device, an automatic leveling method and a three-dimensional printer, wherein the automatic leveling device can solve the problems of leveling nuts and proximity sensors in the prior art. Usually close to the hot bed, short detection distance and low reliability, improve the leveling accuracy, stability and fault tolerance of the hot bed, and ensure the safety of the hot bed, nozzle and automatic leveling device

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