3차원 물체의 형성을 위해 대체 가능한 자기-윤활 기반 구조를 사용하는 광-경화를 위한 방법 및 장치

• Main Authors: TRINGALI LUCIANO, ZITELLI GIANNI, REICHENTAL AVI N
• Format: Patent
• Language: Korean
• Published: 26.09.2019
• Subjects: 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; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

액체 중합체를 방사선에 노출에 의해 방사선에 투명한 시트와 지지 플레이트 사이의 공간에서 광-경화시킴으로써 3차원 물체가 형성된다. 광-경화 액체 중합체를 향해 대면하는 시트의 면 위에 멤브레인이 배열된다. 멤브레인은 방사선에 대해 투명하고 액체 윤활제의 층에 의해 덮여 있다. 멤브레인은 상기 광-경화 액체 중합체가 방사선에 의해 경화되는 영역에 대해 대체 가능하고, 방사선(예를 들면, 410 nm에서의 방사선)은 발광 디이오드(LED) 광원의 어레이, 배플의 어레이 및 렌즈의 어레이로 구성된 평행 광원에 의해 제공될 수 있다. 배플들은 LED의 어레이 내의 각각의 개별적인 LED 광원의 빔 폭을 제한하고, 렌즈의 어레이는 상기 LED 광원들의 어레이로부터 하나의 초점 길이만큼 떨어져 배치된다. Three-dimensional objects are formed by photo-curing a liquid polymer by exposure to a radiation in a space between a sheet transparent to the radiation and a supporting plate. On a side of the sheet facing towards the photo-curing liquid polymer, a membrane is arranged. The membrane is transparent to the radiation and covered by a layer of liquid lubricant. The membrane is displaceable with respect to an area in which said liquid polymer is undergoing curing by exposure to the radiation, which radiation (e.g., at 410 nm) may be provided by a collimated light source composed of an array of light emitting diode (LED) sources, an array of baffles, and an array of lenses. The baffles limit beam widths of each individual LED source in the array of LED, and the array of lenses is located one focal length from said array of LED sources.