Mechanism for cutting film

The utility model is a membrane material cutting mechanism which includes a bracket part and a membrane material coil installed on the bracket part. Especially, a press turnplate mechanism mainly consisting of a tray plane, a positioning rod, membrane press mechanism and subsection plate is set on the bracket part. Certain positioning troughs are distributed on the tray plane, and at least one positioning trough is fixed with a positioning rod which can be disassembled. The membrane mechanism and subsection board are fixed on the tray plane with certain interval distance. The convoluting speed of the membrane cutting mechanism is uniform and the length and subsection size of hydronium exchanging membrane can be adjusted at will in a large range to make sure the veracity of size of the cut membrane material.