US Patent 7987750 Cutter structure of labeling machine

The present invention discloses a cutter structure of a labeling machine, wherein a transmission belt driven by a power source is utilized to drive a ring-shaped gear, which is concentric with a through hole and supported by a bearing, and through the inner teeth on the inner surface of the ring-shaped gear engaging with the gears mounted on the top ends of the tool posts, which are disposed along the outer edge of the through hole, the tool posts can be driven by the ring-shaped gear to turn, and at the same time cut the thermal shrinkable film in the through hole, thereby forming a cutter structure with uniform transmission force and high speed and stable cutting process.