Apparatus and method for three-dimensional printing

Abstract

A three-dimensional printing apparatus includes a liquid tank and a motor. The liquid tank includes a film and a plate. The film has a working area, and the plate supports the film and has at least one fluid tunnel extending from a first surface of the plate contacting the film to a second surface of the plate. The motor is disposed on the liquid tank, providing dragging-down traction to incline the liquid tank. The embodiments of the present invention facilitate the separation of workpieces from the film. Another three-dimensional printing apparatus and a three-dimensional printing method are also provided.

What is claimed is: 
     
         1 . A three-dimensional printing apparatus, comprising:
 a liquid tank, for accommodating a photosensitive liquid, the liquid tank comprising:
 a film, having a working area; and 
 a plate, for supporting the film and having at least one fluid tunnel extending from a first surface of the plate contacting the film to a second surface of the plate; and 
   a motor, disposed on the liquid tank, providing dragging-down traction to incline the liquid tank.   
     
     
         2 . The three-dimensional printing apparatus according to  claim 1 , wherein the liquid tank further comprising:
 a plurality of side walls, surrounding the film.   
     
     
         3 . The three-dimensional printing apparatus according to  claim 2 , wherein the motor is disposed on one of the plurality of side walls. 
     
     
         4 . The three-dimensional printing apparatus according to  claim 3 , further comprising:
 a pivot, disposed on another one of the plurality of side walls, being as a rotation center of the liquid tank when the motor is dragging-down the liquid tank.   
     
     
         5 . The three-dimensional printing apparatus according to  claim 1 , further comprising:
 a pivot, disposed on one end of the plate, with the motor disposed on an opposite end of the plate, being as a rotation center of the liquid tank when the motor is dragging-down the liquid tank.   
     
     
         6 . The three-dimensional printing apparatus according to  claim 1 , wherein the motor provides dragging-down traction to incline the first surface of the plate of the liquid tank with respect to an adhesive surface of a workpiece. 
     
     
         7 . The three-dimensional printing apparatus according to  claim 1 , wherein the motor provides dragging-down traction to incline the liquid tank to form an angle between the first surface of the plate and an adhesive surface of a workpiece is one of the following ranges: 0-30 degrees, 0-10 degrees, and 0-5 degrees. 
     
     
         8 . The three-dimensional printing apparatus according to  claim 1 , wherein the motor provides dragging-down traction to incline the liquid tank to form an interval between a portion of the plate and a workpiece is in one of the following ranges: 0-30 mm, 0-20 mm, and 0-15 mm. 
     
     
         9 . The three-dimensional printing apparatus according to  claim 1 , further comprising:
 a platform, disposed on a first side of the film of the liquid tank, with the plate disposed on a second side of the film of the liquid tank opposite to the first side, wherein the platform is configured to move toward and away from the film.   
     
     
         10 . The three-dimensional printing apparatus according to  claim 1 , wherein the plate has a first area corresponding to the working area and a second area adjacent to the first area, and the fluid tunnel is in the second area. 
     
     
         11 . A three-dimensional printing apparatus, comprising:
 a liquid tank, for accommodating a photosensitive liquid, the liquid tank comprising:
 a film, having a working area; 
 a platform, disposed on a first side of the film of the liquid tank, with the plate disposed on a second side of the film of the liquid tank opposite to the first side, configuring to move toward and away from the film; and 
 a plate, for supporting the film and having at least one fluid tunnel extending from a first surface of the plate contacting the film to a second surface of the plate; and 
   a motor, disposed on the platform, providing pull-up traction on the platform.   
     
     
         12 . The three-dimensional printing apparatus according to  claim 11 , wherein the motor is disposed on a first end of the platform. 
     
     
         13 . The three-dimensional printing apparatus according to  claim 12 , further comprising:
 a pivot, disposed on a second end opposite to the first end of the platform, being as a rotation center of the platform when the motor is pulling-up the platform.   
     
     
         14 . The three-dimensional printing apparatus according to  claim 11 , wherein the motor provides pull-up traction on the platform to incline an adhesive surface of a workpiece with respect to the first surface of the plate. 
     
     
         15 . The three-dimensional printing apparatus according to  claim 11 , wherein the motor provides pull-up traction on the platform to form an angle between the first surface of the plate and an adhesive surface of a workpiece is one of the following ranges: 0-30 degrees, 0-10 degrees, and 0-5 degrees. 
     
     
         16 . The three-dimensional printing apparatus according to  claim 11 , wherein the motor provides pull-up traction on the platform to form an interval between a portion of the plate and a workpiece is in one of the following ranges: 0-30 mm, 0-20 mm, and 0-15 mm. 
     
     
         17 . The three-dimensional printing apparatus according to  claim 11 , wherein the plate has a first area corresponding to the working area and a second area adjacent to the first area, and the fluid tunnel is in the second area. 
     
     
         18 . A three-dimensional printing method, for eliminating a low-pressure area built between a film and a plate for supporting the film of a liquid tank during printing, the method comprising:
 inclining a surface of the plate and an adhesive surface, adhered to the film, of a workpiece with each other; and   directing a fluid to flow from a portion of the low-pressure area to fill the entire low-pressure area.   
     
     
         19 . The three-dimensional printing method according to  claim 18 , wherein the step of inclining a surface of the plate and an adhesive surface, adhered to the film, of a workpiece with each other is performed by a motor pulling up a portion of the plate. 
     
     
         20 . The three-dimensional printing method according to  claim 18 , wherein the step of inclining a surface of the plate and an adhesive surface, adhered to the film, of a workpiece with each other is performed by a motor dragging down a side wall of the liquid tank surrounding the film.