Heat sealing device of three-edge sealing bag making machine

Abstract

The utility model discloses a heat sealing device of a three-edge sealing bag making machine, which belongs to the technical field of three-edge sealing bag making machines and comprises a heat sealing box, an air exhaust mechanism is arranged on the side portion of the heat sealing box, a driving mechanism is arranged on the side portion of the heat sealing box, an inner cavity of the heat sealing box is rotatably connected with a front supporting roller, and the inner cavity of the heat sealing box is rotatably connected with a rear supporting roller. An inner cavity of the heat sealing box is rotationally connected with a rear supporting roller, and a square roller is rotationally connected to the position, located over the front supporting roller, of the inner cavity of the heat sealing box. According to the packaging bag heat sealing device, heat sealing is conducted on the two sides of a packaging bag through the two rotating heat sealing rings, transverse heat sealing is conducted on the packaging bag through the strip-shaped heat sealing cutter, the function of conducting three-edge heat sealing on the packaging bag is achieved, the two heat sealing rings can be driven to move through the two sets of electric push rods, and therefore heat sealing can be conducted on packaging bags with different widths; and the depth of the packaging bag finished product can be adjusted by controlling the up-and-down movement speed of the mounting base and the strip-shaped heat sealing cutter driven by the air cylinder, and the practicability is good.