Punching devices

Details Punching devices Punching devices

1981-11-18

1984-12-04

Yost, Frank T.

Cutting

Tool engages work during dwell of intermittent workfeed

Work-feed element contacts and moves with work

83624, 83628, 83637, 83640, B26F 140, B26D 706

Patent

active

044857080

ABSTRACT:
A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: impulsion means for a top shoe; such as an eccentric cam drive; a stationary bottom shoe supporting a counterpunch; 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 impulsion means 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: 345358 (1886-07-01), Boehme
patent: 1977690 (1934-10-01), Norem
patent: 3735659 (1973-05-01), Button
patent: 4014232 (1977-03-01), Mauger
patent: 4015495 (1977-04-01), Yerly
patent: 4026199 (1977-05-01), Adams et al.
patent: 4125045 (1978-11-01), Jeremic 83588

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