Apparatus and method for SLA 3D printing by using molded preform

An apparatus for SLA 3D printing comprises a tank for receiving light curing liquid, a light source disposed above the tank, and a holding unit. The holding unit is used to hold a preform in the tank so as to permit the preform being coated with cured layers to form an appearance structure. The hold...

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Bibliographische Detailangaben
Hauptverfasser:	YI, SHENG-HUNG, TSENG, MINIH, LIAO, PEN-YI, MAO, CHING-LUNG, SU, YIUNG, SHIH, CHUN-WEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STAMPS TRANSPORTING TYPEWRITERS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An apparatus for SLA 3D printing comprises a tank for receiving light curing liquid, a light source disposed above the tank, and a holding unit. The holding unit is used to hold a preform in the tank so as to permit the preform being coated with cured layers to form an appearance structure. The holding unit includes a holding arm, a suction device connected to the holding arm, and a driving device mounted in the holding arm. The holding arm has an arm body extending into the tank, and a suction nozzle connected to the end of the arm body and used to hold the preform by vacuum adsorption. The driving device has a rolling element disposed in the suction nozzle, and a motor for driving the rolling element to rotate around its axis. The rolling element is operatable to contact with the preform and to drive the preform to rotate so as to transform the surface of the preform facing the light source.