Cam rotating arm structure

The utility model discloses a cam rotating arm structure which comprises a rotating arm and an edge covering piece, a cam is vertically arranged at one end of the rotating arm, the edge covering piece is fixed on one side of the cam, the edge covering piece is provided with a turned edge, the turned edge covers the periphery of the cam, and the outer side edge of the turned edge exceeds or is flush with the other side edge of the cam. By arranging the edge covering piece and then covering the periphery of the cam with the flange, the periphery of the cam is covered by the flange, the periphery of the cam does not need to be polished, and the machining and polishing time is greatly saved; and the contact area with other supporting pieces can be increased through the surface of the turned-over edge, so that stable rotation of the rotating arm is facilitated, and the fluency of the turning-over cover during turning-over is improved. 本实用新型公开了一种凸轮转动臂结构，包括转动臂和包边片，转动臂的一端垂直设有凸轮，包边片固定在凸轮的一侧，包边片设有翻边，翻边包覆在凸轮的外周，翻边的外侧边缘超