Abstract:
Provided are a midsole having one or more throughholes which integrally penetrate lateral portions of the midsole, and a midsole manufacturing device therefor, to thereby make the footwear weigh light, increase a cushion of the shoes, and make a warm-keeping effect excellent. The midsole is formed having an expanding edge portion which is extended outwards from the throughholes. The midsole manufacturing device having a mold assembly includes a lower mold having protruding pins formed on the inner walls of the molding groove in the opened lower mold, in which the rear portion of each of the protruding pins has a certain ramp with respect to the front portion thereof, and an upper mold on the bottom portion of which a pressurized projecting portion is formed, and which moves up and down.
Abstract:
A method of manufacturing outsole of sports shoes in which the throughout holes are formed, manufacturing method comprising the steps of forming the midsole so as to be cut and bisected, joining the cut surface after this, and joining midsole by covering the entire lower surface of midsole after this. A molding for forming of the midsole wherein the molding comprises three widely known and disclosed stages, the molding comprises a lower stage molding (12), in which the throughout hole protrusion (15) is fixed in two columns, a middle stage molding (11), in which the throughout holes (15) that is formed in two columns by forming two sheds (18) divided by a separating partition (13) are inclined toward a separating partition (13) of the respective shed (18), and a higher stage molding (10), in which a molding protrusion (14) that is inserted through sheds (18) of the middle molding (11) so as to be placed in parts, where the respective the throughout hole protrusion (15) formed on the middle molding (12) is not formed, is formed. An outsole of a shoe, in which the throughout holes are passing through the front edge and back edge in side direction of the midsole formed in a shooting molding.