| 摘要 |
<p>A molding apparatus has a pair of slide inserts (30, 32) which are laterally movable into and out of engagement with the other mold components. The lateral movement of the slide inserts (30, 32) is provided by a slide mechanism having a driving rack (46), a pair of drive pinions (52, 54) at either end of the driving rack (46), two pairs of driven racks (60, 62) and a plurality of slides (34, 36) connected to the driven racks (60, 62). The driven racks (60,62) of each pair are parallel and spaced from one another, engaging opposite sides of a pinion (52, 54) and thereby being driven in opposite directions by rotation of the pinion (52, 54). The molding apparatus is more compact than conventional devices having slide inserts, eliminates the use of slide retainers, eliminates obstructions between the mold plates when the plates are separated, and can cycle faster than conventional devices.</p> |
