Patent ID: 8715549
Filing Date: 2014-05-06
Classification: A43D,B29C,B29D

Abstract:
1. A polyurethane-coated (PU-coated) spandex fabric-fused midsole manufacturing apparatus comprising: a central axis positioned at a central area of the apparatus and rotated by a driving force of a motor; a rotary disc fitted on the central axis to be rotated together with the central axis; a plurality of midsole forming mold units, which are mounted on outer ends of support members radially extending from an outer circumference of the rotary disc, respectively; a PU-coated spandex fabric supply apparatus installed above a trace of rotation of the midsole forming mold units to provide PU-coated spandex fabrics to each of the midsole forming mold units; vacuum means installed between the rotary disc and the midsole forming mold units to vacuum an inside of a midsole forming mold unit supplied with a PU-coated spandex fabric to such an extent that the PU-coated spandex fabric comes into close contact with an inner surface of the midsole forming mold unit; a resin introducing apparatus installed outside of the trace of rotation of the midsole forming mold units to introduce polyurethane (PU) resin into the midsole forming mold unit having the PU-coated spandex fabric film in close contact with the inner surface thereof; and a foam-molded product removal apparatus installed outside of the trace of rotation of the midsole forming mold units to remove a foam-molded product formed by foaming the polyurethane resin introduced into the midsole forming unit by leaving the polyurethane resin in the midsole forming mold unit at a predetermined temperature for a predetermined length of time, wherein supplying PU-coated spandex fabrics to any of the midsole forming mold units, continuously vacuuming the inside of the midsole forming mold unit supplied with the PU-coated spandex fabric using the vacuum means to allow the PU-coated spandex fabric to be in close contact with the inner surface of the midsole forming mold unit, introducing the polyurethane resin into the midsole forming mold unit in this condition, and removing the foam-molded product formed by foaming and molding the polyurethane resin are sequentially performed while the rotary disc, each of the midsole forming mold units, and the vacuum means are being rotated in unison together with the central axis.