Metal working – Bias cutting of tubular stock
Patent
1979-04-11
1981-02-03
Culver, Horace M.
Metal working
Bias cutting of tubular stock
29 61, B23D 3102, B23P 1500
Patent
active
042479703
ABSTRACT:
Rotary apparatus comprising a die cutting station followed by a series of segment forming stations, a levelling station and a winding station continuously works a strip of lead into a configuration suitable for battery grid plates having expanded segments forming reticulations extending inwardly from parallel side edges of the strip to a medial unexpanded portion. The rotary die section includes rotary cutting and stripping dies which perforate the medial portion of the strip. At each segment forming station, a pair of upper coaxial shearing rollers, having peripherally projecting lobes each in the shape of one-half of an expanded segment, are transversely spaced to engage one face of the strip adjacent to the side edges thereof; and each shearing roller, in conjunction with a lower cylindrical supporting roller engaging the opposite face of the strip, has a shearing action thereon as the strip is fed through the station by a feeding roller engaging the perforated medial portion of the strip. The shearing and supporting rollers of successive segment forming stations are mounted in progressive converging relation with the medial portion of the strip. All rollers of the segment forming stations are connected to driving mechanism which rotates them in unison, thereby causing the reticulations to be continuously and progressively developed by shearing the segments thereof downwardly from the plane of the medial portion of the strip. The strip is flattened by rollers at the levelling station and coiled on a reel at the winding station.
REFERENCES:
patent: 619340 (1899-02-01), Pitkin
patent: 643640 (1900-02-01), Fordyce et al.
patent: 664379 (1900-12-01), Bradford
patent: 698448 (1902-04-01), Caldwell
patent: 741016 (1903-10-01), Craven
patent: 3760470 (1973-09-01), Felsenthal
patent: 3890160 (1975-06-01), Daniels, Jr.
Bernal Rotary Systems, Inc.
Culver Horace M.
Farley Joseph W.
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