Method and device for double eccentrically punching

The invention discloses a method and a device for double eccentrically punching. The device comprises a frame and two groups of eccentric rotation mechanisms; one group of eccentric rotation mechanism is an eccentric shaft, and the other group of eccentric rotation mechanism is a plurality of eccentric wheels arranged on the eccentric shaft; and the eccentric shaft and the eccentric wheels are respectively correspondingly provided with male molds through swing arms thereof. By utilizing double eccentric rotation mechanisms and adopting a mechanical circle eccentric extrusion principle, through the working mode of the positive and negative rotation of the two groups of eccentric rotation mechanisms, only one set of mold can complete processing two groups of vent holes at different positions without twice positioning and compaction, the operation is convenient, the mechanical volume is small, the conventional mode of processing the vent holes by an electric drill is changed, the punching speed is greatly improv