Net winding mechanical braking device and bundling machine thereof

The utility model relates to a net winding mechanical braking device and a bundling machine thereof, the net winding mechanical braking device comprises a bundling machine body, the bundling machine body is provided with a net cutting device for net cutting operation and a net cage for storing bundled nets, and the front end of the net cage is fixedly connected with a brake disc; the brake is arranged on the outer side of the brake disc; the brake is fixedly connected to a shell of the net cutting device through a brake cable. According to the structure provided by the embodiment of the invention, when the net cage reaches the net casting length set value, the net cutting device falls to perform net cutting operation, at the moment, the net cutting device tightly pulls the brake cable, the brake cable pulls the brake, and a brake pad of the brake is ejected out of the friction force of the contact surface of the brake disc, so that the brake disc immediately stops rotating, and the net cage immediately stops