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Sand mold printing method for rotary special-aperture nozzles

A rotary and nozzle technology, which is applied to casting molding equipment, molds, cores, etc., can solve problems such as the inability to eliminate the sawtooth effect, achieve the effects of avoiding motion interference, eliminating step errors, and improving printing efficiency

Active Publication Date: 2020-07-10
HANGZHOU HIMALAYA INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the circular contour area existing in the current layer, even though the small-aperture nozzle is used for linear scanning printing, it can only reduce the printing error in the border area, and still cannot eliminate the jagged effect caused by the step error

Method used

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  • Sand mold printing method for rotary special-aperture nozzles
  • Sand mold printing method for rotary special-aperture nozzles
  • Sand mold printing method for rotary special-aperture nozzles

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0043] Embodiments of the present invention are as follows:

[0044] Such as figure 2 shown, 1 is N 1 The upper guide rail of the nozzle 11 in the X direction, 2 is the guide rail block of the upper guide rail 1, and 3 is N 1 The upper guide rail of the nozzle in the Y direction, 4 is the guide rail block of the guide rail 3, the lower end of the telescopic connecting rod 5 is connected to the connecting block 9, so that the connecting block 9 can move up and down in the Z direction, and the small-aperture nozzle 6 is installed on the N 1 On the nozzle 11, the connecting block 9 can move along the layering direction (Z direction), that is, the telescopic direction of the telescopic rod 5, so that the connecting block 9 can freely adjust the height to prevent contact with N during the movement. 2 The nozzle 14 interferes, the nozzle 11 is c...

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Abstract

The invention discloses a sand mold printing method for rotary special-aperture nozzles. Two independent printing spray heads are installed in a device, one rotary printing spray head is provided witha plurality of small-aperture nozzles, the other linear scanning type spray head is provided with a large-aperture nozzle, and each nozzle in the spray heads is independently opened and closed according to a printing path; and the inner contour of a region is recognized in the scanning and printing process of each layer, an existing circular contour is printed in a printing region of a current layer through the rotary spray head, errors caused by the step effect are eliminated, then a boundary region which has a non-circular contour is linearly scanned and printed through the rotary nozzles,the step effect errors are reduced, and the other regions are linearly and rapidly printed through the large-aperture spray head, so that the printing efficiency is improved.

Description

technical field [0001] The invention relates to a printing processing method in the technical field of sand mold 3D printing, in particular to a sand mold printing method for rotary nozzles with different apertures. Background technique [0002] Sand mold 3D printing technology is a new technology that is developing rapidly, and it is more and more widely used in sand mold modeling. The principle of this technology is developed from 3D printing technology, and currently mainly includes patternless casting manufacturing technology (PCM) and selective laser sintering coated sand technology (SLS). PCM moldless casting manufacturing technology is widely used. It is an array manufacturing comprehensive technology, which is mainly reflected in fast, accurate and flexible manufacturing without casting molds. It integrates CAD computer three-dimensional design, 3D printing technology and digital automation. Control technology is applied in the development and design of the organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B33Y10/00B33Y30/00B33Y50/02
CPCB22C9/02B33Y10/00B33Y30/00B33Y50/02
Inventor 范有赵庆洋
Owner HANGZHOU HIMALAYA INFORMATION TECH