The invention discloses a rotary type cam mechanism. The rotary type cam mechanism comprises a fixing disc, a fixing shaft, a rotating shaft, a fixing plate, a lifting rod, a convex plate, a baffle, a sliding rod, a spring, a revolving shaft, a connecting rod and a pressing disc. According to the rotary type cam mechanism, the structure is smart, and the function is powerful; by using the device, rotating and resetting of the pressing disc are achieved, so that continuous production of later label is facilitated, in addition, adjusting of the height of the convex plate can be realized through simple operation; and ultimately, time saving and labor saving are achieved, and at the same time, stability of whole machine operation is further promoted greatly.