System for and method of manufacturing three-dimensional structure

Abstract

Disclosed are a system for and a method of manufacturing a three-dimensional (3D) structure. The method may include injecting a fluid with a first pressure toward a surface of a first output layer to form a softening layer in the first output layer, injecting the fluid with a second pressure toward the softening layer to form an uneven structure in the softening layer, the second pressure being higher than the first pressure, and forming a second output layer on the softening layer with the uneven structure.

What is claimed is: 
     
         1 . A method of manufacturing a three-dimensional (3D) structure, comprising:
 injecting a fluid with a first pressure toward a surface of a first output layer to form a softening layer in the first output layer;   injecting the fluid with a second pressure toward the softening layer to form an uneven structure in the softening layer, the second pressure being higher than the first pressure; and   forming a second output layer on the softening layer with the uneven structure.   
     
     
         2 . The method of  claim 1 , wherein the fluid has a temperature ranging from a softening point of the first output layer to a melting point of the first output layer. 
     
     
         3 . The method of  claim 1 , wherein the softening layer with the uneven structure comprises a recessed region, to which the fluid with the second pressure is injected, and a protruding region adjacent to the recessed region. 
     
     
         4 . The method of  claim 3 , wherein a thickness of the protruding region is larger than that of the recessed region. 
     
     
         5 . The method of  claim 1 , wherein the fluid with the second pressure is injected with the fluid with the first pressure. 
     
     
         6 . The method of  claim 1 , wherein an injection area of the fluid with the first pressure is larger than that of the fluid with the second pressure. 
     
     
         7 . The method of  claim 1 , further comprising injecting solution, in which metal particles are contained, toward the softening layer with the uneven structure. 
     
     
         8 . The method of  claim 7 , wherein the second output layer and the metal particles comprise the same metallic material. 
     
     
         9 . The method of  claim 1 , wherein the fluid comprises nitrogen gas (N 2 ) or air. 
     
     
         10 . A system for manufacturing a three-dimensional structure, comprising:
 a supporting structure;   a head unit spaced apart from the supporting structure;   a head transporting part configured to move the head unit over the supporting structure;   a first supplying part configured to supply a fluid to the head unit; and   a second supplying part configured to supply a shaping material to the head unit,   wherein the head unit comprises:   a first head part configured to inject the fluid toward the supporting structure with a first pressure and a second pressure higher than the first pressure; and   a second head part configured to supply the shaping material toward the supporting structure.   
     
     
         11 . The system of  claim 10 , wherein the first head part comprises:
 a first injection part configured to inject the fluid with the first pressure toward the supporting structure; and   a second injection part configured to inject the fluid with the second pressure toward the supporting structure,   wherein the first injection part is provided to enclose the second injection part.   
     
     
         12 . The system of  claim 11 , wherein the first injection part comprises at least one first inlet, which is connected to the first supplying part, and a plurality of first nozzles, which are spaced apart from the first inlet in a direction toward the supporting structure,
 the second injection part comprises a second inlet, which is connected to the first supplying part, and a second nozzle, which is spaced apart from the second inlet in the direction toward the supporting structure, and   the second inlet and the second nozzle are vertically overlapped with each other.   
     
     
         13 . The system of  claim 10 , further comprising a third supplying part configured to supply solution, in which a metallic material is contained, to the head unit,
 wherein the head unit further comprises a third head part configured to inject the solution toward the supporting structure.   
     
     
         14 . The system of  claim 10 , wherein the fluid has a temperature ranging from a softening point of the shaping material to a melting point of the shaping material. 
     
     
         15 . The system of  claim 10 , wherein the head unit further comprises a circular-disk shaped connection plate connecting the first and second head parts to the head transporting part, and
 the head transporting part is configured to rotate the connection plate.