Heat preservation cotton punching machine

The utility model provides a heat preservation cotton punching machine which comprises a punching machine body, a strip-shaped shell internally provided with a cavity is installed at the top of a discharging port of the punching machine body, air draft hoses are installed at the two ends of the inner wall of the strip-shaped shell in a penetrating mode, air draft channels are symmetrically formed in the two sides of the interior of the punching machine body, and the air draft channels are communicated with the strip-shaped shell. An air draft mechanism is installed on the inner wall of the air draft channel, and a dust collection mechanism is arranged at the bottom of the inner wall of the punching machine body. When the dust collection device is used, chippings generated when the heat preservation cotton is cut by the heat preservation cotton punching machine can be effectively collected, pollution of the chippings to the environment of a machining site is reduced, the air blower is started to enable negativ