| 摘要 |
A press has a table which rotates about a vertical axis. Within the table is mounted a plurality of molds which are symmetrically distributed about the vertical axis, each mold having a cavity extending therethrough, the axis of each cavity being parallel to the vertical axis. A plurality of anvils are mounted for radial sliding movement across the upper surface of the table, and a plurality of punches are mounted below the table, there being one anvil and one punch associated with each mold. As the table, anvils, and punches rotate as a unit, stationary cams effect movement of each anvil and punch in a coordinated manner: (1) the punch enters the cavity from below and presses powdered material against the anvil; (2) the anvil moves radially inwardly from over the cavity; (3) the punch moves further upwardly to eject the manufactured article onto the table; (4) the punch moves downwardly; and (5) the anvil moves radially outwardly to clear the table of excess powder, and move the article into a receptacle mounted to the table, there being a separate receptable associated with each mold. Also, a core rod extends through the punch and into the cavity, the punch being mounted for lateral movement so that it is centered upon entering a counterbore at the lower end of the cavity.
|
