Punching devices

Details Punching devices Punching devices

1986-11-26

1988-08-16

Kazenske, E. R.

Cutting

Tool engages work during dwell of intermittent workfeed

Work-feed element contacts and moves with work

83530, 83624, 83628, B26D 706, B26F 140

Patent

active

047635517

ABSTRACT:
A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: a driving mechanism for a top shoe; such as a rocking lever drive, elliptical cam drive, or wedge-form transmission; a stationary bottom shoe supporting a counter-punch; a movable top shoe supporting punch knives; and a gripper bar arrangement for intermittent forwarding through the punching device of sheets to be punched wherein the drive mechanism for the top shoe is located between the top shoe and a yoke which is connected with the bottom shoe through prestressed tie rods.

REFERENCES:
patent: 2507556 (1950-05-01), Bobst
patent: 2780117 (1957-02-01), Bauer et al.
patent: 3122033 (1964-02-01), Riemenschneider et al.
patent: 4462291 (1984-07-01), Schulz
patent: 4485708 (1984-12-01), Halff et al.

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