Patent ID: 7473092

Claim:
An adjusting structure for adjusting a distance between two preforms comprising: a track which is a closed curve having a predetermined length, a plurality of closely arranged carrier sets serially mounted on the track and each carrier set including a first carrier and at least one second carrier, the first carrier used for mounting a preform seat for mounting a preform, wherein the first carrier of each of the carrier sets has a first end formed with a first contact zone and a second end formed with a second contact zone, the first contact zone has a radius equal to that of the second contact zone; and the second carrier of each of the carrier sets has a first end formed with a third contact zone and a second end formed with a fourth contact zone, the third contact zone has a radius equal to that of the fourth contact zone and that of the first contact zone and the second contact zone; and wherein the first carrier of each of the carrier sets has two opposite end faces formed with two opposite flanges each protruding outward form the first contact zone and the second contact zone.