Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product
Patent
1987-12-24
1988-12-20
Kazenske, E. R.
Cutting
With product handling means
Means to move, guide, or permit free fall or flight of product
83137, 83615, 83620, B21D 4504, B21D 2834, B26F 114
Patent
active
047918446
ABSTRACT:
In a knockout device which is mounted in a press-machine in order to knock out a punched work plate such as a printed board and the likes from punches through a knockout actuation-plate, cylinder chambers as an oil hydraulic knockout cylinder is formed in the upper portion of a base plate fixedly secured to the underside of a slide and an actuation-plate guide hole is formed in the lower portion of the base plate respectively. The cylinder chambers are disposed at the eccentric positions offset toward the periphery of the actuation-plate hole respectively. The knockout actuation-plate provided in the actuation-plate guide hole is adapted to be driven downwardly protrusively by the pistons provided in the cylinder chambers, and to be linearly guided by the peripheral surfaces of the knockout actuation-plate and of the linear guide boss protruded upwardly from the central portion of the knockout actuation-plate.
REFERENCES:
patent: 2642138 (1953-06-01), Macewka
patent: 3570343 (1971-03-01), Wolnosky et al.
patent: 3797342 (1974-03-01), Sekel
Kabushiki Kaisha KOSMEK
Kazenske E. R.
Phan Hien H.
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