| 摘要 |
A punch (1) with a shell (2) having an insertion opening (35) for material, which is to be punched, and punching pins (26) in connection with the opening as well as a lever mechanism (55), driven by an electric motor and designed to transmit punching force to the punching pins, which motor drives a gear reduction set with a small gear wheel (66) and a large driven gear wheel (64). An eccentric shaft (62) is eccentrically mounted in the latter wheel with concentric pins (63) in relation to the driven wheel, which concentric pins are mounted in the shell (2). The eccentric shaft (62) is surrounded by mounting eyes at its one end by swinging arms (61), the other end of which is mounted on a flexible shaft (58) between the one longitudinal side by an upper, in the shell rotatably fastened link (59), to which via the flexible shaft (58) the one longitudinal side of an intermediate link (59) is rotatably connected, the other longitudinal side of which via a flexible shaft (56) is connected to a positively guided punch holding list (50), which can be displaced between an upper starting position and a lower punching position and supports the punching pins (26), which are guided in a profile (24), which includes the insertion opening (35). The links are in a mutually stretched out position in the punching position of the punching pins and a mutually angular position in their starting position.
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