Metal deforming – With means to handle work or product – Including product handling means
Patent
1976-01-05
1978-01-17
Lanham, C.W.
Metal deforming
With means to handle work or product
Including product handling means
83 81, 83160, B21D 4504, B26D 718
Patent
active
040685195
ABSTRACT:
An unloader for a conventional press of the type having a reciprocable ram, the unloader including a drive rack positively reciprocated by the ram to drive the unloader in synchronization with press movement, a stationary support frame extending into the die area, and a tray movably mounted on the support frame. A pinion gear is driven by the drive rack to drive the tray between an extended position underneath the ram of the press and a withdrawn position out of the press die area. The pinion gear is mounted in a rocking yoke to maintain pitch line contact between the drive rack and the pinion gear. The support frame includes opposed tray guides each guide including upper and lower spaced apart rails and the tray is mounted to the frame by front and rear sets of rollers, three rollers in each set, with the rollers positioned between the rails. The front set of three rollers has one roller contacting only the upper rail and the other two rollers contacting only the lower rail and the rear set of rollers has one roller contacting only the lower rail and two rollers contacting only the upper rail. The roller arrangement in the rails constrains the tray to linear movement along a plane parallel to the elongated axis of the rails and prevents vertical movement of the tray relative to the rails. The tray may include magnets to eliminate bouncing of workpieces released by the press.
REFERENCES:
patent: 3057312 (1962-10-01), Hatch
patent: 3148571 (1964-09-01), Wallis
patent: 3349602 (1967-10-01), Nelson
patent: 3855840 (1974-12-01), Kawano
Gurley D. M.
Kasle Steel Corporation
Lanham C.W.
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