Swash plate opening and closing device

The utility model relates to the field of mechatronics, in particular to a swash plate opening and closing device which comprises a side vertical plate, a ventilation groove is formed in the side vertical plate, two sliding rails parallel to each other are arranged on the side vertical plate, a swash plate is arranged between the two sliding rails, a hollow cylinder is arranged on the ventilation groove, and the hollow cylinder is arranged on the side vertical plate. The swash plates can move along the sliding rails and cover the hollow cylinders, and transmission mechanisms for driving the swash plates to move back and forth along the sliding rails are further arranged on the side vertical plates; according to the opening and closing device, the two contact end faces of the hollow cylinder and the swash plate are the parallel wedge-shaped faces, in the opening and closing process of the swash plate, the end face of the swash plate and the end face of the hollow cylinder are in a non-contact state all the tim