| 摘要 |
A feed bar driving apparatus for a transfer press. A pair of carriers is located at each of the ends of two parallel feed bars. The carriers each have vertically movable feed bar receptacles thereon for holding the feed bars for permitting them to slide freely in the direction of their length while restricting their movements in the lateral direction and move toward and away from each other in clamping and unclamping movements. A rack mechanism between the carriers has a rack attached to each carrier, a pinion engaging each rack and located at positions between the corresponding carriers and the center of the space between the carriers, and an even number of idler gears connected between the pinions for driving the pinions in opposite directions of rotation. A cam carrying slide member slides reciprocally on the press. A reciprocating mechanism is connected to one of the carriers in each pair and there is a reciprocal motion producing cam on the slide member acting on a cam follower to drive a connecting rod connected to the one carrier for reciprocatingly driving the one carrier. An elevating mechanism elevates the feed bar receptacles by an elevating plate and a linkage, and a rotation producing mechanism rotates a splined shaft to drive the linkage.
|
