Punching unit in a punching and/or binding machine for joining t

Details Punching unit in a punching and/or binding machine for joining t Punching unit in a punching and/or binding machine for joining t

1984-04-20

1986-09-16

Yost, Frank T.

Cutting

Means to drive or to guide tool

Plural tools selectively engageable with single drive

83571, 83620, 83628, 83633, 83635, 234116, B26D 510, B26F 104

Patent

active

046115200

ABSTRACT:
A punching unit in a punching binding machine for joining together packs of sheets by a resilient teeth comb binder, comprises on a framework of the machine: a fixed bar provided with openings having a substantially vertical axis; a plurality of punches, each of which extended through the openings and each comprising a bottom cutting edge and a tang extended at the top of the bar; a movable bar arranged at the top of the fixed bar and carrying a series of catches, each of which movable between an active position for operating the relative punch, and a rest position where such a punch is not thereby operated; the movable bar being supported on slides sliding on the framework; a control assembly for the lowering of the movable bar on the fixed bar. The control assembly comprises: a control shaft rotatably carried on the framework; a plate integral in rotation with the shaft; a connecting rod pivoted at one end to the plate; a lever pivoted at the other end of the connecting rod, and having its fulcrum at a fixed location to the framework and extended beyond the fulcrum to form a head engaged with the slide for movement of the latter.

REFERENCES:
patent: 1888746 (1932-11-01), Specht
patent: 2038857 (1936-04-01), Rutter et al.
patent: 2558044 (1951-06-01), Emmer
patent: 2908173 (1959-10-01), Bardy
patent: 2957380 (1960-10-01), Duncan et al.
patent: 3921487 (1975-11-01), Otsuka et al.
patent: 4324013 (1982-04-01), Wu

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