Patent ID: 9314832
Filing Date: 2016-04-19
CPC Classification: B21D

Claim Text:
1. A sheet metal member shape forming system, comprising: a mold consisting of a sealing die and a shape-forming die, said sealing die and said shape-forming die being arranged in such a manner that the distance between said sealing die and said shape-forming die is changeable, said sealing die defining therein a sealing cavity at least one air hole, said shape-forming die defining therein a shape-forming cavity, said shape-forming die being adapted for holding a sheet metal member at a top side thereof between said shape-forming die and said sealing die; a heater arranged around said mold and adapted for heating said mold; an out-mold heating zone having installed therein a standby die and an out-mold heater, said out-mold heater being adapted for heating said standby die to have said standby die provide an out-mold temperature; a material feeding unit adapted for feeding a sheet metal member kept under room temperature conditions onto a top side of said standby die outside said out-mold heating zone for enabling said sheet metal member to be moved with said standby die to said mold; a fluid/gas flow supply source connected to said at least one air hole of said sealing die and adapted for providing a high-pressure fluid/gas flow into said sealing cavity to impart a fluid/gas flow pressure on said sheet metal member; a lift unit carrying said shape-forming die and adapted for moving said shape-forming die up and down relative to said sealing die between a mold-closing status where said shape-forming die and said sealing die are closed and a mold-opening status where said shape-forming die and said sealing die are opened, said lift unit being controllable to keep moving said shape-forming die toward said sealing die after reaching said mold-closing status to impart an upward pressure on said shape-forming die against said sealing die, said upward pressure being greater than said fluid/gas flow pressure; and a control unit connected to said lift unit, said fluid/gas flow supply source, said material feeding unit, said out-mold heater and/or said heater.