A kind of what cover board Kai He mechanism and the foods machine including cover board Kai He mechanism are closed in this creation. The foods machine further includes a pedestal, a roller and a delivery section. The roller rotationally sets the what pedestal, which is equipped with a port. The delivery section can movably set the what pedestal and be extended with respect to the roller and be set into the inside of the roller. Cover board Kai He mechanism includes a lid, at least an atmospheric pressure pole group, a rotary joint and an at least air pressure pipeline for setting the what roller, cover board Kai He mechanism. The lid, which can be opened, to be connected the what roller entirely and can cover or not cover the port. On at least atmospheric pressure pole group one end fixed what roller, another end combines with the lid. Fixed part and one of the rotary joint with an affixed what pedestal can be relative to the rotation sections of the fixed part rotation. An at least air pressure pipeline wears the what fixed part, and equipped at least one channel being normally connected to an at least air pressure pipeline, an at least channel and with this, at least an atmospheric pressure pole group inside is connected to for the inside of the rotation section.本創作關於一種蓋板開闔機構及包括該蓋板開闔機構之食品機。該食品機更包含一基座、一滾筒及一輸送部。該滾筒可轉動地設於該基座，該滾筒設有一通口。該輸送部可相對該滾筒移動地設於該基座且延伸設入該滾筒之內部。該蓋板開闔機構供設於該滾筒，該蓋板開闔機構包括一蓋體、至少一氣壓桿組、一旋轉接頭及至少一氣壓管線。該蓋體可開闔地連接於該滾筒而可封蓋或未封蓋該通口。該至少一氣壓桿組其一端固設於該滾筒上、另端與該蓋體相結合。該旋轉接頭具有一固接於該基座之固定部、及一可相對該固定部轉動之轉動部。該至少一氣壓管線穿設於該固定部，該轉動部之內部設有至少一常態地與該至少一氣壓管線連通之通道，該至少一通道並與該至少一氣壓桿組內部連通。
