A spiral pipe-forming apparatus includes a non-circular guide portion which is rotatable with respect to an apparatus frame around a rotary axis. The non-circular guide portion is configured to be applied to a peripheral surface of a preceding spiral pipe portion. An acting portion is configured to act such that the non-circular guide portion follows a peripheral surface of an existing pipe.

An intelligent module pipeline, an intelligent module helical pipeline winding machine and a winding method thereof. In the cross section of the pipeline, a plurality of intelligent modules (1) are clamped and helically wound end to end to form a circular pipeline; each of the intelligent module units is an arch-shaped module which is formed by injection molding or compression molding; the each intelligent module unit is provided a reinforcing rib structure inside, a fixing device for fixing and clamping from left to right on the side surfaces, and a clamping device for fixing and clamping end to end at the edges. An arc-shaped chute rail is provided on the front surface of a working panel of the winding machine; the arc-shaped chute rail is provided with at least one pair of feed rollers (107), and is further provided with a locking device (108) and a parallel twisting device (106); the same intelligent module units are arranged end to end on the arc-shaped chute rail, and then are locked by means of the locking device, to form a semicircular pipe diameter by means of the feed rollers; then the parallel twisting device twists the semicircular pipe diameter in parallel to change the winding rail; and the intelligent module units are wound in a staggered arrangement to form helical winding pipelines.

An intelligent module pipeline, an intelligent module helical pipeline winding machine and a winding method thereof. In the cross section of the pipeline, a plurality of intelligent modules (1) are clamped and helically wound end to end to form a circular pipeline; each of the intelligent module units is an arch-shaped module which is formed by injection molding or compression molding; the each intelligent module unit is provided a reinforcing rib structure inside, a fixing device for fixing and clamping from left to right on the side surfaces, and a clamping device for fixing and clamping end to end at the edges. An arc-shaped chute rail is provided on the front surface of a working panel of the winding machine; the arc-shaped chute rail is provided with at least one pair of feed rollers (107), and is further provided with a locking device (108) and a parallel twisting device (106); the same intelligent module units are arranged end to end on the arc-shaped chute rail, and then are locked by means of the locking device, to form a semicircular pipe diameter by means of the feed rollers; then the parallel twisting device twists the semicircular pipe diameter in parallel to change the winding rail; and the intelligent module units are wound in a staggered arrangement to form helical winding pipelines.

Both diameter expansion and contraction control and fitting stabilization are achieved at the same time in a pipe end release-type pipe-forming apparatus having a non-inner periphery restriction structure. A driving part (10) provided in an apparatus frame (30) of a pipe-forming apparatus (3N) presses an unformed following strip portion (92) of the strip member (90). A reverse side guide portion (83) is engaged with a pipe end portion (91e) of a preceding spiral pipe portion (91) from a reverse side. A face side guide portion (82) is engaged with the pipe end portion (91e) from a face side. The face side guide portion (82) is shifted to the propulsion rear side beyond the reverse side guide portion (83). The following strip portion (92) is extruded from the driving part (10) toward an inter-guide clearance (84) between the reverse side guide portion (83) and the face side guide portion (82). Preferably, the driving part (10) is position-adjustably attached to the guide portions (83), (82) or the apparatus frame (30) via a position adjustment mechanism (31a).

A pipe-forming apparatus with which a spiral pipe can be formed using a simple configuration without an inner periphery restriction body. A driving part (10) of a pipe-forming apparatus (3) presses a following strip portion (92) toward a pipe end portion (91e) of a preceding spiral pipe portion (91) obliquely with respect to a machine-height direction HD. A pipe end guide is constrained in a machine-width direction WD with respect to the pipe end portion, and slidably engaged in a propelling longitudinal direction LD. A pressing force for the following strip portion provides a fitting force between the following strip portion and the pipe end portion, and a propelling force for forward propulsion. A pipe is formed in a state where a part other than a partial part at which the pipe-forming apparatus is provided in a circumferential direction of the pipe end portion is released from the pipe-forming apparatus.

It is possible to prevent a tip portion of a guide portion in a spiral pipe-forming apparatus allowing an inner periphery restriction body to be omitted from colliding a peripheral surface portion of a non-circular existing pipe. A non-circular guide portion (73) is provided so as to be rotatable with respect to an apparatus frame (3a) around a rotary axis (32). The guide portion (73) is applied to a peripheral surface of a preceding spiral pipe portion (91). An acting portion (41) acts such that the guide portion (73) follows the peripheral surface of the existing pipe (1).

Both diameter expansion and contraction control and fitting stabilization are achieved at the same time in a pipe end release-type pipe-forming apparatus having a non-inner periphery restriction structure. A driving part (10) provided in an apparatus frame (30) of a pipe-forming apparatus (3N) presses an unformed following strip portion (92) of the strip member (90). A reverse side guide portion (83) is engaged with a pipe end portion (91e) of a preceding spiral pipe portion (91) from a reverse side. A face side guide portion (82) is engaged with the pipe end portion (91e) from a face side. The face side guide portion (82) is shifted to the propulsion rear side beyond the reverse side guide portion (83). The following strip portion (92) is extruded from the driving part (10) toward an inter-guide clearance (84) between the reverse side guide portion (83) and the face side guide portion (82). Preferably, the driving part (10) is position-adjustably attached to the guide portions (83), (82) or the apparatus frame (30) via a position adjustment mechanism (31a).

An intelligent module pipeline, an intelligent module helical pipeline winding machine and a winding method thereof. In the cross section of the pipeline, a plurality of intelligent modules (1) are clamped and helically wound end to end to form a circular pipeline; each of the intelligent module units is an arch-shaped module which is formed by injection molding or compression molding; the each intelligent module unit is provided a reinforcing rib structure inside, a fixing device for fixing and clamping from left to right on the side surfaces, and a clamping device for fixing and clamping end to end at the edges. An arc-shaped chute rail is provided on the front surface of a working panel of the winding machine; the arc-shaped chute rail is provided with at least one pair of feed rollers (107), and is further provided with a locking device (108) and a parallel twisting device (106); the same intelligent module units are arranged end to end on the arc-shaped chute rail, and then are locked by means of the locking device, to form a semicircular pipe diameter by means of the feed rollers; then the parallel twisting device twists the semicircular pipe diameter in parallel to change the winding rail; and the intelligent module units are wound in a staggered arrangement to form helical winding pipelines.

An intelligent module pipeline, an intelligent module helical pipeline winding machine and a winding method thereof. In the cross section of the pipeline, a plurality of intelligent modules (1) are clamped and helically wound end to end to form a circular pipeline; each of the intelligent module units is an arch-shaped module which is formed by injection molding or compression molding; the each intelligent module unit is provided a reinforcing rib structure inside, a fixing device for fixing and clamping from left to right on the side surfaces, and a clamping device for fixing and clamping end to end at the edges. An arc-shaped chute rail is provided on the front surface of a working panel of the winding machine; the arc-shaped chute rail is provided with at least one pair of feed rollers (107), and is further provided with a locking device (108) and a parallel twisting device (106); the same intelligent module units are arranged end to end on the arc-shaped chute rail, and then are locked by means of the locking device, to form a semicircular pipe diameter by means of the feed rollers; then the parallel twisting device twists the semicircular pipe diameter in parallel to change the winding rail; and the intelligent module units are wound in a staggered arrangement to form helical winding pipelines.

A curl-forming apparatus (1) includes: a main body (20) configured to deform a profile strip (100); and a support body (3) configured to support the main body (20) in a holding unit (4) for the profile strip (100). The profile strip (100) is helically wound on an inside of the holding unit (4). The main body (20) is disposed in a hollow part of the holding unit (4) and is configured to draw and deform the profile strip (100) inside the holding unit (4). The support body (3) is rotatable relative to the holding unit (4), and is configured to rotate about an axis of the holding unit (4) in synchronization with the main body (20) that draws the profile strip (100).