Machine for punching sheet metal

Two shafts (18, 19), each supporting a roller (20, 21), are fixed between two endless chains (11). Each shaft (18, 19) carries two bearing rollers (22) rolling on two horizontal bars (24) fixed above the rollers to a transverse plate of the frame. Two horizontal plates (27, 28) are mounted so as to...

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Bibliographische Detailangaben
1. Verfasser:	MIROSLAV JEREMIC
Format:	Patent
Sprache:	eng
Schlagworte:	CUTTING DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING HAND CUTTING TOOLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSES PRESSES IN GENERAL PUNCHING METAL SEVERING TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Two shafts (18, 19), each supporting a roller (20, 21), are fixed between two endless chains (11). Each shaft (18, 19) carries two bearing rollers (22) rolling on two horizontal bars (24) fixed above the rollers to a transverse plate of the frame. Two horizontal plates (27, 28) are mounted so as to slide on two guide pillars (29, 30). The plates (27, 28) carry groups of three punches (31) aligned transversely to the direction of movement (F) of the rollers. A spring (34) returns upwards the head of the punch (31) carrying a ball, a part of which projects above a retention plate (36). The rollers (20, 21) driven by the chains (11) actuate successively the heads of punches (31) which pierce successively a series of holes in a metal sheet. The machine enables holes to be pierced without recourse to large forces. This enables a lighter machine to be constructed.