Polyurethane combined material reaction kettle provided with weighing device and used for producing glass covered edges

The utility model relates to a polyurethane combined material reaction kettle provided with a weighing device and used for producing glass covered edges. The polyurethane combined material reaction kettle comprises a kettle body 1, a kettle body upper cover 2, the weighing device and a movable clamping device, wherein an upper cover 2 is arranged on the kettle body 1, a plurality of feeding pipes3 are arranged on the upper cover 2, a discharging pipe 4 is arranged at the bottom end of the kettle body 1, switch valves 5 are mounted on the feeding pipes 3 and the discharging pipe 4, and the weighing device comprises a pressure sensor 6, a shielding cable 7, a digital display instrument 8 and a junction box 9; the movable clamping device comprises a clamping sleeve 12 and a supporting air cylinder 13, the two ends of the clamping sleeve 12 are both connected with a piston rod 1301 of the air cylinder 13, and a switch is arranged on the air cylinder 13; and the clamping sleeve 12 is arranged right below the kettl