Article transfer apparatus

Details Article transfer apparatus Article transfer apparatus

1978-08-18

1981-04-14

Werner, Frank E.

Material or article handling

Horizontally swinging load support

Swinging about pivot

414225, B65G 4791, B65G 2900

Patent

active

042616816

ABSTRACT:
This describes an improved apparatus for transferring articles along an arcuate path. The apparatus has a multi-armed turret driven by a stepping motor around a center point. The turret has an article holding head on the end of each arm to which vacuum and pressure must be applied at different times. The vacuum and pressure is applied to the holding head from fixed sources through a single rotary vacuum-pressure distributive valve. The valve is comprised of a fixed input plate and motor driven rotary output plate mounted thereon. The rotary output plate is coupled to the turret by flexible tubing and driven by a second stepping motor in synchronization with the turret driving stepping motor. This synchronous driving of the output plate of the valve with a motor separate from that driving the turret prevents the valve vacuum-pressure loading friction from affecting the turret drive. This reduces accumulative rotary error in the turret.

REFERENCES:
patent: 2889962 (1959-06-01), Foster
patent: 3207363 (1965-09-01), Pollack, Jr.
patent: 3275189 (1966-09-01), Goldsborough et al.
patent: 3453714 (1969-07-01), Clark et al.
patent: 3616942 (1971-11-01), Gruber
patent: 3894636 (1975-07-01), Tonus
patent: 3941233 (1976-03-01), Ainola
patent: 3973682 (1976-08-01), Neff

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