| 摘要 |
A high-speed automatic heading machine having a knockout mechanism comprises a first eccentric shaft adapted to be driven by a source of power, a second eccentric shaft and driving link mounted by bearing means on said first eccentric shaft. A rocker arm is pivotally connected to said driving link at a location spaced from a connection between said driving link and said first ec-entric shaft. Said rocker arm is also linked to second eccentric shaft so that when the first eccentric shaft is driven, the rocker arm continuously oscillates. Knockout means are secured to said rocker arm for ejecting a blank from a die of the heading machine.
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