Method for Trimming Molds of Automotive Metal Sheets

Abstract

The present invention provides a method for trimming molds of automotive metal sheets, which comprise a top mold and a bottom mold. The top mold has a concave mold surface, and the bottom mold has a corresponding convex mold surface. The method comprises: 1. Use the top mold as the base mold, and smear dye on the top mold; 2. Close the bottom mold to the top mold; and 3. Polish the mold surface of the bottom mold. Thereby, the processing method according to the prior art is broken through, and an ergonomic trimming operation is hence provided. Accordingly, the trimming process is simplified, and the labor hours are reduced. Beside, the accuracy of trimmed molds is improved and the subsequent mold-clamping process can be omitted. Thereby, the exterior quality of the metal sheets can be enhanced while reducing substantial labor hours, and economic benefits for manufacturing molds of metal sheets for an automotive body can be achieved.

1 . A method for trimming molds of automotive metal sheets, which comprise a top mold with a concave mold surface and a bottom mold with a corresponding convex mold surface, comprising steps of:
 using the top mold as the base mold and smearing dye on the top mold;   closing the bottom mold to the top mold; and   polishing the mold surface of the bottom mold.   
   
   
       2 . The method for trimming molds of automotive metal sheets of  claim 1 , wherein the dye in the step of using the top mold as the base mold and smearing dye on the top mold is smeared on the concave mold surface. 
   
   
       3 . The method for trimming molds of automotive metal sheets of  claim 1 , wherein the top mold and the bottom mold have corresponding shapes thereon. 
   
   
       4 . The method for trimming molds of automotive metal sheets of  claim 1 , wherein the dye in the step of using the top mold as the base mold and smearing dye on the top mold includes red lead or other dying materials. 
   
   
       5 . The method for trimming molds of automotive metal sheets of  claim 1 , wherein the step of polishing the mold surface of the bottom mold polishes the convex mold surface dyed with the dye on the bottom mold.