Advancing material of indeterminate length – By intermittent material-mover – Comprising material-moving roll
Patent
1981-01-30
1982-12-21
Christian, Leonard D.
Advancing material of indeterminate length
By intermittent material-mover
Comprising material-moving roll
226 35, 226155, 226177, B65H 1722
Patent
active
043645054
ABSTRACT:
The invention relates to a hydraulically actuated feed roll lift mechanism for feeds utilized to feed strip stock into a machine, such as a mechanical press. Regulated hydraulic pressure acting against a piston that is connected to one of the feed rolls through a yoke forces the feed roll against the stock to grip the stock and cause an increment thereof to be fed into the press when the rolls are rotated. A roll opening cam, which is connected to the press crankshaft, advances a small piston to displace oil against the other side of the piston while the stock is at rest to thereby separate the rolls during the time that the dies are in contact with the stock in the press. The time at which roll separation is initiated is controlled by adjusting the angular position of the cam on its shaft, as by releasing a frictional lock mechanism, rotating the cam to the desired position, and then again locking it in place. The invention is particularly related to a double feed roll system wherein opposing feed rolls are located at the infeed and outfeed sides of the press so that the stock is both pushed and pulled therethrough. Identical cam roll lift mechanisms are utilized for both of the pairs of feed rolls wherein the cams are mounted on the same shaft and can be adjusted independently of each other. This enables the infeed and outfeed rolls to be separated at different times during the cycle of the press.
REFERENCES:
patent: 2722276 (1955-11-01), Revelle
patent: 3115999 (1963-12-01), Wythe
patent: 3349981 (1967-10-01), Hawkins et al.
patent: 3583268 (1971-06-01), Scribner
patent: 3754705 (1973-08-01), Wiig
patent: 3782618 (1974-01-01), Voorhees
patent: 3837552 (1974-09-01), Monahan
patent: 3937112 (1976-02-01), Geeson
patent: 4048831 (1977-09-01), Fabian et al.
Christian Leonard D.
Hoffman John F.
Jeffers Albert L.
The Minster Machine Company
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