Patent ID: 6227283
Filing Date: 2001-05-08
Classification: A44B,Y10S,Y10T

Abstract:
A mold for die-casting a slide fastener slider, which includes a slider body composed of upper and lower wings connected at their front ends by a guide post, and a cantilevered pull-tab attaching lug projecting from an upper surface of the guide post toward an rear end of the upper wing, the pull-tab attaching lug having an end projection extending from a lower surface of a rear end of the pull-tab attaching lug toward and terminating short of an upper surface of the upper wing, said mold comprising:(a) an upper die having a first cavity for forming an upper surface of the upper wing of the slider body and an upper surface of said cantilevered pull-tab attaching lug;(b) a lower die having a second cavity for forming a lower surface of the lower wing, said upper and lower die being movable toward and away from each other;(c) a plug-shaped first slide core slidably disposed between said upper and lower dies;(d) a recess-shaped second slide core relatively slidable toward and away from said plug-shaped first slide core for forming the end projection of the pull-tab attaching lug and a lower surface of the pull-tab attaching lug;(e) a recess-shaped third slide core slidably engageable with said first and second slide cores and said upper die and slidable on said lower die for forming a front part of the guide post, a guide groove and interiors of guide flanges; and(f) a plug-shaped fourth slide core slidable toward and away from said third slide core for forming a rear part of the guide post, the guide groove and exteriors of the guide flangeswherein a front surface, side walls and a hollow extending longitudinally through the base of said pull-tab attaching lug are molded by said first slide core.