Extrusion device for demolding of food ring-pull cans

The utility model discloses an extrusion device for demoulding a food zip-top can. The extrusion device comprises an extrusion cylinder, an extrusion die head is installed on the right side of the extrusion barrel, a movable block is connected to the inner side of the extrusion barrel in a sliding mode, a through hole is formed in the middle of the left side of the extrusion barrel, a movable rod is fixed to the left side of the movable block, the left end of the movable rod penetrates through the left side of the through hole, and a fixing frame is fixed to the bottom end of the left side of the extrusion barrel and is of an L-shaped structure; a hydraulic cylinder is arranged on the right side of the vertical end of the fixing frame, the telescopic end of the hydraulic cylinder is fixed to the left end of the movable rod, a fixing block is arranged on the upper side of the right end of the extrusion barrel and is of a hollow structure, a cavity in the middle of the fixing block communicates with an inner ca