| 摘要 |
<p>A method of making an injection-molded slide fastener slider includes a first injection-molding step for forming a slider body (1) having an integral arch-shaped support lug (9) and a second injection-molding step for forming a pull tab (2) threaded through a transverse hole in the support lug (9). For pivotal connection of the pull tab (2) with the support lug (9), a mold used for achieving the method includes a combination of a main slide core (15) and an auxiliary slide core (16) slidably associated therewith. In the first injection-molding step, the auxiliary slide core (16) is held in a first position in which the two slide cores (15, 16) jointly have a shape corresponding to the shape of the transverse hole while blocking fluid communication between first and second mold cavities in which the slider body (1) and a body of the pull tab (2) are formed respectively. Then the auxiliary slide core (16) is moved to a second position in which a third mold cavity corresponding in shape to a pintle of the pull tab (2) and communicating with the second mold cavity is defined between the slide cores (15, 16) and the underside of the already molded lug (9). Thereafter, the second injection-molding step is carried out.</p> |
