NOZZLE AND LAMINATION MOLDING APPARATUS

• Main Authors: SASAKI MITSUO, FUJIMAKI SHINPEI, TSUNO SATOSHI, SHIOMI YASUTOMO, ONO HIROSHI, YAMADA TOMOHIKO
• Format: Patent
• Language: English; Japanese
• Published: 03.10.2019
• 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; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a nozzle of a lamination molding apparatus capable of elevating convergence of a powder of a material to be supplied to a molding position.SOLUTION: A nozzle of lamination molding apparatus of an embodiment is assembled with: a first inner surface constituting a first passage through which an energy ray passes; and a second inner surface constituting a second passage which extends along the first passage and through which a gas and a powder of a material pass. At a tip part of the nozzle, the first passage opens and the second passage opens in a vicinity or around the first passage. At least a part of the second inner surface is provided with a first region which has friction coefficients to a powder larger than those of at least one of outer peripheral surfaces surrounding the first inner surface and tip part.SELECTED DRAWING: Figure 3 【課題】例えば、造形位置に供給する材料の粉体の収束性をより高めることが可能な積層造形装置のノズルを得る。【解決手段】実施形態の積層造形装置のノズルは、エネルギ線が通る第一通路を構成する第一内面と、第一通路に沿って延びガスおよび材料の粉体が通る第二通路を構成する第二内面と、を備える。ノズルの先端部分においては、第一通路が開口されるとともに、当該第一通路の近傍または周囲に第二通路が開口される。第二内面の少なくとも一部には、第一内面および先端部分の周囲の外周面のうち少なくとも一方よりも粉体に対する摩擦係数が大きい第一領域が設けられる。【選択図】図３