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Method of operating a multi-nozzle extruder using a zigzag pattern providing improved structural integrity

A technology of extruder and pattern, applied in the direction of 3D object support structure, coating device, processing and manufacturing, etc., can solve the problems of damage to the structural integrity of the area, adverse effects of ability, lack of ability, etc.

Active Publication Date: 2022-02-01
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This lack of continuity compromises the structural integrity of the area and adversely affects its ability to support the surface formed on the area

Method used

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  • Method of operating a multi-nozzle extruder using a zigzag pattern providing improved structural integrity
  • Method of operating a multi-nozzle extruder using a zigzag pattern providing improved structural integrity
  • Method of operating a multi-nozzle extruder using a zigzag pattern providing improved structural integrity

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Embodiment Construction

[0017] For a general understanding of the device environment and device details disclosed herein, reference is made to the accompanying drawings. In the drawings, the same reference numerals denote the same elements.

[0018] As used herein, the term "extruded material" refers to a material that is typically softened or melted to form the thermoplastic material to be ejected from an extruder in an additive manufacturing system. Extruded materials include, but are not strictly limited to, "build materials" that form permanent parts of the 3D printed object, and "support materials" that form temporary structures to support parts of the build material during the printing process and are optionally removed after the printing process is complete. By. Examples of materials of construction include, but are not limited to, acrylonitrile butadiene styrene (ABS) plastics, polylactic acid (PLA), aliphatic or semiaromatic polyamides (nylons), plastics including suspended carbon fibers or...

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Abstract

The additive manufacturing system operates the actuator to move the extruder with reference to the selected first Z-shaped pattern to sparsely fill the interior area of ​​the object by extruding a strip of thermoplastic material having straight sections connected by angled sections. After completing the first pass using said first zigzag pattern, a second zigzag pattern is used to form a complementary strip forming a rigid structure with the first strip. The two patterns are alternately used to sparsely fill the interior region in the plurality of layers of the object until a predetermined distance from a solid fill structure or surface is detected. A transition pattern is then used to increase the density of the stripes in the inner region in the next successive layer of the object until reaching the layer where a Solid fills the surface.

Description

technical field [0001] The present disclosure relates to multi-nozzle extruders for use in three-dimensional object printers, and more particularly, to structural features that form support surfaces in the fill zone. Background technique [0002] 3D printing, also known as additive manufacturing, is the process of making three-dimensional objects from digital models of almost any shape. Many 3D printing techniques use an additive process in which an additive manufacturing device forms successive layers of a part on top of previously deposited layers. Some of these techniques use an extruder to soften or melt extruded material such as ABS plastic into a thermoplastic material, and then spray the thermoplastic material in a predetermined pattern. Printers typically operate extruders to form continuous layers of thermoplastic material that form three-dimensionally printed objects of various shapes and structures. After each layer of the 3D printed object is formed, the thermo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/393B29C64/112B33Y50/02B33Y10/00
CPCB29C64/393B29C64/112B33Y50/02B33Y10/00B33Y70/00B29C64/118B29C64/209B29C64/106B29K2101/12B33Y30/00
Inventor D·A·曼特尔P·J·奈斯特龙C·G·林恩J·奥尼尔
Owner XEROX CORP
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