JP2022021960A - 三次元造形装置 - Google Patents
三次元造形装置 Download PDFInfo
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- JP2022021960A JP2022021960A JP2020125892A JP2020125892A JP2022021960A JP 2022021960 A JP2022021960 A JP 2022021960A JP 2020125892 A JP2020125892 A JP 2020125892A JP 2020125892 A JP2020125892 A JP 2020125892A JP 2022021960 A JP2022021960 A JP 2022021960A
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- head
- liquid
- flushing
- flushing operation
- modeling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
上記課題を解決するための本発明の第1の態様の三次元造形装置は、造形テーブルと、前記造形テーブルに粉末層を形成する層形成部と、前記粉末層における三次元造形物の造形領域にバインダーを含む液体をノズルから吐出するヘッドと、前記造形テーブルに対する前記ヘッドの移動と電圧を印加することによる前記ヘッドの駆動とを制御するとともに、前記造形領域とは異なる位置であるフラッシング位置において前記ヘッドにフラッシング動作を実行させるよう制御する、制御部と、を備え、前記制御部は、前記造形領域と前記フラッシング位置との距離が閾値未満の場合に、前記ヘッドに第1フラッシング動作を実行させ、前記造形領域と前記フラッシング位置との距離が前記閾値以上の場合に、前記第1フラッシング動作と異なるフラッシング条件で前記ヘッドに第2フラッシング動作を実行させるよう制御することを特徴とする。
最初に、本発明の三次元造形装置1の一実施例について図1を参照して説明する。ここで、図1及び後述する各図における図中のX方向は水平方向であり供給ユニット8の往復移動方向に対応し、このうち、X1方向は往方向、X2方向は復方向に対応する。また、Y方向は水平方向であるとともにX方向と直交する方向であり、ローラー6の回転軸の延びる方向に対応する。また、Z方向は鉛直方向であり、層500の積層方向に対応する。
2B…造形材料供給部、3…ヘッド、3A…ヘッド、3B…ヘッド、
4…紫外線照射部、5…液体受け部、5A…液体受け部、5B…液体受け部、
6…ローラー(層形成部)、6A…ローラー、6B…ローラー、8…供給ユニット、
9…造形テーブル、9a…造形面、10…テーブルユニット、10a…上面部、
11…ガイドバー、12…制御部、20…外部装置、31…供給液室(供給路)、
32…循環液室(循環路)、33…供給口、34…排出口、35…圧電素子、
36…圧力室、37…個別供給流路(供給路)、38…個別循環流路(循環路)、
40…液体供給システム、41…循環部、42…補充部、
43a…加圧制御用液体タンク、43b…減圧制御用液体タンク、
43c…液体カートリッジ、44a…加圧制御用ポンプ、44b…減圧制御用ポンプ、
44c…流動用ポンプ、44d…流動用ポンプ、45a…供給流路(供給路)、
45b…第1循環流路(循環路)、45c…第2循環流路、45d…液体補充流路、
46…流量センサー、500…層(粉末層)、
501、502、503、・・・50n…層、D…振動板、
F1…フィルター、F2…フィルター、F3…フィルター、N…ノズル、
L…空走距離(造形領域P1とフラッシング位置P2との距離)、L1…空走距離、
L2A…空走距離、L2B…空走距離、La…空走距離、Lb…空走距離、
P1…造形領域、P2…フラッシング位置、S…構造体、Sa…領域、Sb…領域、
V1…電磁弁、V2…電磁弁
Claims (8)
- 造形テーブルと、
前記造形テーブルに粉末層を形成する層形成部と、
前記粉末層における三次元造形物の造形領域にバインダーを含む液体をノズルから吐出するヘッドと、
前記造形テーブルに対する前記ヘッドの移動と電圧を印加することによる前記ヘッドの駆動とを制御するとともに、前記造形領域とは異なる位置であるフラッシング位置において前記ヘッドにフラッシング動作を実行させるよう制御する、制御部と、
を備え、
前記制御部は、
前記造形領域と前記フラッシング位置との距離が閾値未満の場合に、前記ヘッドに第1フラッシング動作を実行させ、
前記造形領域と前記フラッシング位置との距離が前記閾値以上の場合に、前記第1フラッシング動作と異なるフラッシング条件で前記ヘッドに第2フラッシング動作を実行させるよう制御することを特徴とする三次元造形装置。 - 請求項1に記載された三次元造形装置において、
前記第2フラッシング動作における前記ヘッドへ入力される波形の周波数は、前記第1フラッシング動作における前記ヘッドへ入力される波形の周波数よりも高いことを特徴とする三次元造形装置。 - 請求項1または2に記載された三次元造形装置において、
前記第2フラッシング動作における前記ヘッドへの印加電圧は、前記第1フラッシング動作における前記ヘッドへの印加電圧よりも高いことを特徴とする三次元造形装置。 - 請求項1から3のいずれか1項に記載された三次元造形装置において、
前記第2フラッシング動作における前記ヘッドからの前記液体の吐出速度は、前記第1フラッシング動作における前記ヘッドからの前記液体の吐出速度よりも速いことを特徴とする三次元造形装置。 - 請求項1から4のいずれか1項に記載された三次元造形装置において、
前記第2フラッシング動作において前記ヘッドから吐出される前記液体の液滴サイズは、前記第1フラッシング動作における前記ヘッドから吐出される前記液体の液滴サイズよりも大きいことを特徴とする三次元造形装置。 - 請求項1から5のいずれか1項に記載された三次元造形装置において、
前記ヘッドは、前記ノズルに連通する圧力室と、前記圧力室に前記液体を供給する供給路と、循環させるために前記圧力室から前記液体を流入する循環路と、を備えることを特徴とする三次元造形装置。 - 請求項6に記載された三次元造形装置において、
前記制御部は、単位時間当たりに前記循環路に流入する前記液体の流量をq1とし、単位時間当たりに前記ノズルから吐出される前記液体の最大流量をq2としたときに、q2/q1が0.05以上20以下となるよう制御することを特徴とする三次元造形装置。 - 請求項7に記載された三次元造形装置において、
前記q2/q1は、0.05であることを特徴とする三次元造形装置。
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