Automatic mounting method for soft sheath of punched metal plate

The invention discloses an automatic mounting method for a soft sheath of a punched metal plate. The method comprises the steps that a punched metal plate is placed on a machine tool bottom plate, and soft sheaths are put into a feeding hopper and orderly arranged into a discharging pipe; the control device controls the servo motor to drive the transverse shaft track and the longitudinal shaft track erected on the bottom plate to move, the punch arranged at the intersection of the tracks is driven to move to an initial positioning point at the first hole, and fine adjustment alignment is conducted through the color recognition device; the control device drives a stepping motor integrated in the punch, so that the punch presses the discharge pipe downwards along the vertical shaft, and the soft sheath arranged at the lowest part in the discharge pipe is pressed into the opening of the metal plate; whether installation succeeds or not is judged through scanning of a color recognition device; and if successful,