Forming device and forming method thereof

Abstract

A forming device includes a feeding component, an injection module, and a die-casting module. The feeding component has an internal space suitable for allowing a molten metal fluid to flow. The injection module is disposed on the feeding component and communicated with the internal space. The die-casting module has a mold cavity and a flow channel. The flow channel is aligned with the mold cavity and communicated with the internal space of the feeding component. The molten metal fluid flows to the die-casting module along the internal space, the injection module outputs a supercritical fluid into the internal space to mix with the molten metal fluid, and the feeding component pushes the molten metal fluid to pass through the flow channel and enter the mold cavity.

What is claimed is: 
     
         1 . A forming device, comprising:
 a feeding component having an internal space suitable for allowing a molten metal fluid to flow;   an injection module disposed on the feeding component and communicated with the internal space; and   a die-casting module having a mold cavity and a flow channel, wherein the flow channel is aligned with the mold cavity and communicated with the internal space of the feeding component, wherein   the injection module outputs a supercritical fluid into the internal space to mix with the molten metal fluid, and the feeding component pushes the molten metal fluid to pass through the flow channel and enter the mold cavity.   
     
     
         2 . The forming device as claimed in  claim 1 , wherein the feeding component comprises a delivery pipe, a feeding member, and a pushing member, the delivery pipe has the internal space, the feeding member is disposed outside the delivery pipe and communicated with the internal space, and the pushing member is movably disposed in the delivery pipe. 
     
     
         3 . The forming device as claimed in  claim 2 , wherein the feeding member receives a plurality of metal particles, the internal space is divided into a storage area, a transition area, and a mixing area, the storage area stores the metal particles and the metal particles are gradually heated, the transition area is adjacent to the storage area and the metal particles form the molten metal fluid after entering the transition area, the mixing area is adjacent to the transition area and close to the die-casting module, and the supercritical fluid flows into the mixing area and assists in pushing the molten metal fluid located in the mixing area. 
     
     
         4 . The forming device as claimed in  claim 3 , wherein the pushing member is a hollow screw rotatably disposed in the storage area of the internal space, and the hollow screw is suitable for rotating to drive the metal particles to move toward the transition area. 
     
     
         5 . The forming device as claimed in  claim 2 , wherein the pushing member pushes a mixture of the molten metal fluid and the supercritical fluid into the mold cavity. 
     
     
         6 . The forming device as claimed in  claim 2 , wherein the feeding member receives the molten metal fluid, the internal space is divided into a storage area, a transition area, and a mixing area, the storage area stores the molten metal fluid, the transition area is disposed with a check valve and is suitable for allowing the molten metal fluid to pass through, the mixing area is adjacent to the check valve and close to the die-casting module, and the supercritical fluid flows into the mixing area and assists in pushing the molten metal fluid located in the mixing area. 
     
     
         7 . The forming device as claimed in  claim 6 , wherein the pushing member is a pushrod linearly movably disposed in the storage area of the internal space and away from the die-casting module, and the pushrod is suitable for pushing the molten metal fluid to pass through the check valve and enter the mixing area. 
     
     
         8 . The forming device as claimed in  claim 2 , further comprising a heating furnace for containing the molten metal fluid, and an end of the delivery pipe away from the die-casting module and the feeding member are located in the heating furnace. 
     
     
         9 . The forming device as claimed in  claim 8 , wherein the internal space is divided into a storage area, a transition area, and a mixing area, the feeding member is disposed with a first check valve, the molten metal fluid flows from the heating furnace, passes through the first check valve, and enters the storage area, the transition area is disposed with a second check valve and is suitable for allowing the molten metal fluid to pass through, the mixing area is adjacent to the second check valve and close to the die-casting module, and the supercritical fluid flows into the mixing area and assists in pushing the molten metal fluid located in the mixing area. 
     
     
         10 . The forming device as claimed in  claim 9 , wherein the pushing member is a pushrod linearly movably disposed on the feeding member and away from the die-casting module, and the pushrod is suitable for pushing the molten metal fluid to pass through the second check valve and enter the mixing area. 
     
     
         11 . The forming device as claimed in  claim 3 , further comprising a plurality of heating members disposed on an outer wall surface of the delivery pipe for heating the metal particles or the molten metal fluid. 
     
     
         12 . The forming device as claimed in  claim 6 , further comprising a plurality of heating members disposed on an outer wall surface of the delivery pipe for heating metal particles or the molten metal fluid. 
     
     
         13 . A forming method suitable for a forming device, wherein the forming device comprises a feeding component, an injection module, and a die-casting module, and the forming method comprises:
 providing a molten metal fluid to the feeding component, wherein the molten metal fluid flows toward the die-casting module;   outputting, by the injection module, a supercritical fluid to the feeding component to mix with the molten metal fluid;   pushing, by the feeding component, the molten metal fluid to pass through the flow channel and enter a mold cavity of the die-casting module; and   pressurizing, by the die-casting module, the molten metal fluid to form a solid workpiece.   
     
     
         14 . The molding method as claimed in  claim 13 , wherein the supercritical fluid adopts nitrogen, carbon dioxide, or a mixture of a plurality of gases. 
     
     
         15 . The molding method as claimed in  claim 13 , wherein the molten metal fluid adopts magnesium alloy or aluminum alloy. 
     
     
         16 . The molding method as claimed in  claim 13 , wherein the feeding component pushes a mixture of the molten metal fluid and the supercritical fluid into the mold cavity. 
     
     
         17 . The molding method as claimed in  claim 13 , wherein the feeding component pushes a portion of the molten metal fluid to partially fill the mold cavity, and the supercritical fluid assists in pushing another portion of the molten metal fluid to fill the mold cavity.