Patent ID: 9120292
Filing Date: 2015-09-01
Classification: B21D,B23P,B32B,B60J,Y10T

Abstract:
1. A method of manufacturing an inner panel of a vehicle tailgate, comprising: temporarily coupling a plurality of sub-blanks to a main blank by a temporary welding process; forming the main blank into an inner panel and the plurality of sub-blanks into a plurality of reinforcing members, using a forming mold; and permanently coupling the plurality of reinforcing members to the inner panel, using a cutting mold, wherein the permanently coupling the plurality of reinforcing members comprises: clinching the plurality of reinforcing members and the inner panel into a space between a fixing die having a groove and a clinching punch on a clinching core to push the plurality of reinforcing members into inner panel, wherein the fixing die is disposed on an upper mold plate of the cutting mold and the clinching core is disposed on a lower mold plate of the cutting mold so as to trim and clinch the inner panel simultaneously.