초록 ▼

An apparatus for flattening irregular circumferential surfaces in spirally formed pipe and for cutting such pipes is disclosed. The apparatus includes a pipe surface flattening assembly and a rotating knife assembly. The pipe surface flattening assembly includes an upper roller and a lower roller wh

An apparatus for flattening irregular circumferential surfaces in spirally formed pipe and for cutting such pipes is disclosed. The apparatus includes a pipe surface flattening assembly and a rotating knife assembly. The pipe surface flattening assembly includes an upper roller and a lower roller which are brought into flattening contact with the surface of the pipe in the area to be cut. The rollers move axially with the pipe and cooperate with an inner roller located inside the pipe to flatten any raised surface irregularities on the inside and outside surface of the pipe as the pipe rotates between the rollers. The rotating knife assembly includes an inner knife located inside the pipe and an outer wire positioned outside the pipe. A rotatable support roller is positioned outside the pipe, and opposite the outer knife. To cut the pipe, the outer knife punctures the pipe in the area previously flattened. The outer knife overlaps the inner knife and the support roller abuts the opposite side of the pipe. The inner and outer knives and the support roller move axially with the pipe. As the pipe continues to rotate, it is completely severed.

대표청구항 ▼

An apparatus for flattening irregular circumferential surfaces in spirally formed pipe wherein the pipe moves in an axial direction and rotates while it is being formed, comprising: inner surface flattening means to be positioned inside the pipe; outer surface flattening means to be positioned outsi

An apparatus for flattening irregular circumferential surfaces in spirally formed pipe wherein the pipe moves in an axial direction and rotates while it is being formed, comprising: inner surface flattening means to be positioned inside the pipe; outer surface flattening means to be positioned outside the pipe; first moving means for moving the outer surface flattening means into contact with the pipe at a position vertically aligned with the inner surface flattening means; guide means for allowing the inner surface flattening means and outer surface flattening means to move in the axial direction of the pipe, so that the inner and outer surface flattening means will cooperate to flatten raised surface irregularities on the pipe as the pipe moves axially and rotates between the inner and outer surface flattening means.