Patent ID: 8905105

Claim:
A winding machine for forming a rehabilitating pipe by using a plastic strip, comprising: a frame installed inside an existing pipe, a joining mechanism for joining a plastic strip, and at least one wheel for supporting the joining mechanism on an inner surface of the existing pipe, wherein the plastic strip is an elongated material that comprises joint portions and that is formed into a tubular shape by the joint portions arranged adjacent to each other by being helically wound and joined by the joining mechanism, the frame comprises a plurality of rollers rotating in contact with the plastic strip to he wound, and is capable of orbiting, the joining mechanism that is provided in the frame and that comprises an inner roller and an outer roller that sandwich the plastic strip from inside and outside to join the joint the joint portions, the at least one wheel, which has a larger diameter than the outer roller, is provided at a side portion of the joining mechanism so as to be rotated in contact with the inner surface of the existing pipe, and comprises a rotational shaft thereof at a position different from positions of rotational shafts of the inner roller and the outer roller, and the frame and the joining mechanism orbit inside the inner surface of the existing pipe, and the at least one wheel is rotated in contact with the inner surface of the existing pipe, whereby the outer roller can be maintained separated from the inner surface of the existing pipe.