Nozzle needle tip calibration method and low temperature printing platform based on 3D printer

Abstract

The invention provides a nozzle needle tip calibration method and a low-temperature printing platform based on a 3D printer. The nozzle needle tip calibration method includes the following steps thatS01, a quick positioning stage is carried out, specifically, a controller drives a nozzle needle tip to be close to a position sensor at a speed V2, so that the needle tip drives the calibration planeof the position sensor to generate a retraction displacement L2, and the controller calculates the initial calibration height H of the calibration plane between the needle tip and the position sensoraccording to the retraction displacement L2; S02, a stage which returns to secondary calibration height is carried out, specifically, the controller drives the nozzle needle tip to move an L2+L3 distance in the opposite direction at a speed V3, wherein H is more than L3, and L3 is more than 0; and S03, a low-speed calibration stage is carried out, specifically, the controller drives the needle tip to move toward the calibration plane at a speed V4, so that the needle tip drives the calibration plane of the position sensor to generate a retraction displacement L4, and the calibration process is completed. Through the nozzle needle tip calibration method and the low-temperature printing platform based on the 3D printer, more rapid and efficient nozzle needle tip calibration can be achieved.

Description

technical field [0001] The present invention relates to the technical field of 3D printing, and more specifically, to a method for calibrating the nozzle tip of a 3D printer and a low-temperature printing platform. Background technique [0002] From the analysis of printing and forming principles, 3D printing is a process in which materials or energy are transferred to a forming platform in the form of extrusion, injection or emission by a specific nozzle according to a predetermined trajectory, and a three-dimensional model is finally obtained through layer-by-layer accumulation. [0003] For extrusion-type 3D printing equipment, in order to achieve more efficient printing operations, it is an inevitable development trend to improve the automation level and accuracy of the equipment. On common biological 3D printing equipment, the automatic calibration of the needle tip is an important indicator to measure the performance of the equipment. The device with the needle point c...

AI Technical Summary

Problems solved by technology

However, in general needle point calibration, in order to improve the accuracy of the calibration results, it is often necessary for the nozzle to touch the sensor slowly to obtain the position parameters. However, due to the long initial calibration stroke, the calibration process often takes more time, which affects printing. efficiency

In addition to the problem of needle point calibration efficiency, after the first nozzle is loaded with material, due to the uncontrollable pre-extrusion printing process, the problem of no material extrusion from the needle point after the nozzle enters the model trajectory often occurs

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