The present utility model relates to an arc circumferential cutting device for excess material at the bottle mouth of an extrusion blow molding machine, comprising a belt transmission part, a guide bar part and a cutting knife. The belt transmission part consists of a large belt pulley, a small belt pulley and a transmission belt, wherein the large belt pulley and the small belt pulley are horizontally arranged and connected by the transmission belt. The guide bar part consists of a straight guide bar and an arc guide bar, and the inner side thereof is provided with a curved surface conforming to the outer side of the belt. The cutting knife is an arc-edge cutting knife, the cutting edge is arranged on the inner side or the outer side, the cutting edge is concentric with the large belt pulley, and the cutting edge is arranged on the path where the bottle mouth rolls through. Since the excess material arc circumferential cutting device is provided, the excess material cutting process is rolling shearing without cutting chips, with a standard cut, no waste products and high working efficiency. The working cutting edge of the cutting knife is long, avoiding rapid edge wear caused by single-point edge rotary cutting. It is easy to realize that bottles produced by multi-cavity molds all pass through one set of circumferential cutting device, and the equipment adjustment is simple. Finished products and excess materials are automatically diverted after separation.
Country Code: CN
Application Number: CN201120481575.1
