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A method for adaptive speed regulation control of spreading scraper for ceramic 3D printer

A technology of 3D printers and control methods, which can be applied to ceramic molding machines, manufacturing tools, additive processing, etc., and can solve problems such as damage, uneven material spreading, and air bubbles on the slurry surface, and achieve a uniform surface effect

Active Publication Date: 2021-02-19
NANTONG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ceramic 3D printers usually use SLA or DLP light-curing forming technology. At present, most of the printing equipment is modified by photosensitive resin forming equipment. The physical properties of ceramic slurry and photosensitive resin are different. Simple transformation cannot completely solve problems such as laying materials. Problems such as unevenness and discontinuous feeding, especially once the speed of the spreading blade is set, it usually maintains a constant value during the whole process of printing and forming, and cannot be changed; while the solidified solid area of ​​each layer of the formed model is different, resulting in cured The adhesion between the part and the uncured part and the ceramic slurry is always changing, while the thrust F of the scraper due to the constant speed movement 0 Keep it unchanged, this situation will directly affect the uniformity of the paving, and even the new slurry will tear the formed model or the newly laid slurry due to excessive or too small adhesion. The surface contains defects such as bubbles and damage

Method used

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  • A method for adaptive speed regulation control of spreading scraper for ceramic 3D printer
  • A method for adaptive speed regulation control of spreading scraper for ceramic 3D printer

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Experimental program
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Effect test

Embodiment 1

[0039] First, measure and store the solid phase, liquid phase composition and solid-liquid phase mass ratio B of the ceramic slurry to be printed by the printer 1 , ceramic slurry viscosity S 1 , solid particle size D 1 , these parameters can be provided by commercial ceramic slurry manufacturers, or measured when preparing ceramic slurry;

[0040] Then, the adhesion force (adhesion force between solid and liquid) F 1 , Adhesion within the ceramic slurry (adhesion within the liquid) F 2 ;

[0041] For the specific printing model, after layering and slicing with the printing software, it is necessary to export the layered data, calculate and store the solid phase area of ​​each layer of the model entity in the layered slice of the model to be printed accounted for the total area of ​​the single layer of the printing platform. Phase percentage S k %, where k=1, 2, ..., N, N is the number of layers of the model as a control parameter.

[0042] If in order to improve printin...

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Abstract

The invention provides an adaptive controller and a speed regulation control method for a spreading scraper used in a ceramic 3D printer. By measuring the physical parameters of the ceramic slurry to be printed, the adaptive controller is used to adjust the moving speed of the spreading scraper during printing. Optimizing control and realizing lean control can make the newly laid slurry not damaged, and the surface of the solid phase can be formed, and the surface is uniform, without visible bubbles, and there is no visible depression on the edge of the slurry and the formed solid phase, which promotes ceramics. The development of 3D printing equipment.

Description

technical field [0001] The invention belongs to the field of 3D printer control system design, and in particular relates to an adaptive speed regulation control method for a spreading scraper of a ceramic 3D printer. Background technique [0002] Ceramic 3D printers usually use SLA or DLP light-curing forming technology. At present, most of the printing equipment is modified by photosensitive resin forming equipment. The physical properties of ceramic slurry and photosensitive resin are different. Simple transformation cannot completely solve problems such as laying materials. Problems such as unevenness and discontinuous feeding, especially once the speed of the spreading blade is set, it usually maintains a constant value during the whole process of printing and forming, and cannot be changed; while the solidified solid area of ​​each layer of the formed model is different, resulting in cured The adhesion between the part and the uncured part and the ceramic slurry is alwa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/00B33Y10/00B33Y50/02
CPCB28B1/001B33Y10/00B33Y50/02
Inventor 袁鸿顾海
Owner NANTONG INST OF TECH