Cylindrical product manufacturing equipment, control method for tubular product manufacturing equipment, and control program for tubular product manufacturing equipment

摘要

A tubular product manufacturing apparatus successively delivers an injection molded tubular shaped body in the delivery direction. The manufacturing apparatus detects a defect on the surface of the molded body passing through the detection position in the delivery direction. The manufacturing apparatus separates a tubular product from the molded body. When a portion having a predetermined length in the molded body passes the detection position without detecting a defect, the manufacturing apparatus separates a tubular product from the molded body, which contains the portion having the predetermined length. When a defect is detected before a portion having the predetermined length in the molded body BT passes through the detection position, the manufacturing apparatus separates the defective tubular product from the molded body. The length of the defective tubular product is shorter than a good product length which is the length of the tubular product including the portion of the predetermined length.