Patent ID: 9511967
Filing Date: 2016-12-06
CPC Classification: B21D,B65H,Y02E

Claim Text:
1. An apparatus for manufacturing a current collector, comprising: a supply reel configured to have a metal foil wound on the supply reel; a pair of transfer rollers disposed on one side of the supply reel and configured to transfer the metal foil wound on the supply reel; a hole formation unit disposed on one side of the transfer rollers and comprising an upper roller and a lower roller disposed under the upper roller, wherein the upper roller comprises a plurality of first protrusion cutter modules disposed on an outer circumference surface of the upper roller and spaced apart from one another at a first constant interval and a plurality of first groove cutter modules each placed between two neighboring first protrusion cutter modules, the first protrusion cutter modules and the first groove cutter modules being configured to form through holes in the metal foil transferred by the transfer roller, each of the plurality of first protrusion cutter modules comprises a first base member fastened to the outer circumference surface of the upper roller and a plurality of first protrusion cutter blades protruding from a top surface of the first base member, the first protrusion cutter blades being spaced apart from one another at a second constant interval, and each of the plurality of first groove cutter modules comprises a second base member fastened to the outer circumference surface of the upper roller and concaved from a top surface of the second base member, the first groove cutter blades being spaced apart from one another at the second constant interval, and wherein the lower roller comprises a plurality of second protrusion cutter modules disposed on an outer circumference surface of the lower roller and spaced apart from one another at the first constant interval in such a way as to be engaged with the first protrusion cutter modules and a plurality of second groove cutter modules each placed between two neighboring second protrusion cutter modules in such a way as to be engaged with the first groove cutter modules, the second protrusion cutter modules and the second groove cutter modules being configured to form the through holes in the metal foil transferred by the pair of transfer rollers; a pair of thickness control rollers disposed on one side of the hole formation unit, spaced apart from each other at a specific interval, and configured to perform control so that a thickness of the current collector is smaller than the specific interval; and a recovery reel disposed on one side of the thickness control rollers and configured to recover the metal foil in which the through holes have been formed and that has passed through the thickness control rollers.