JP2009034997A - Device for curling strip member with reinforcing material, method for making spiral pipe, and device for making spiral pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely make a spiral pipe having a target pipe diameter and a distance when making the spiral pipe by using a strip member with a reinforcing material where the reinforcing material having high rigidity is mounted to a strip member. <P>SOLUTION: When a long strip member 100 with a reinforcing material having joints formed at the edges on both sides and with reinforcing material attached continuously in the longitudinal direction is fed out, and the adjoining joints are jointed, to make a spiral pipe S, a circular arc shape curling having a radius of curvature substantially equal to or shorter than that of the spiral pipe S is formed in the strip member 100 with a reinforcing material and it is deformed spirally and plastically by using the curl reforming device 3 composed of feed rollers 32, 33 and a curling guide 31 in advance of jointing the adjoining joints of the adjacent strip member 100 with a reinforcing material through a joint mechanism 4. Consequently, the spiral pipe S can be made while suppressing the action of a restoring force for restoring the strip member 100 with a reinforcing material so as to have the original radius of curvature to be wound to a drum. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a curl forming device for forming a curl on a strip-shaped member with a reinforcing material used when rehabilitating an existing pipe such as an aged sewer pipe, a water pipe, an agricultural water pipe, a gas pipe, etc. The present invention relates to a pipe manufacturing method and a pipe manufacturing apparatus for manufacturing a spiral pipe with a band-shaped member.

  Conventionally, in an existing pipe, a band-shaped member having joints formed on both side edges and a reinforcing material continuous in the longitudinal direction are individually supplied, and the reinforcing material is applied to a predetermined position of the band-shaped member immediately before the spiral pipe is formed. It has been proposed to rehabilitate existing pipes by attaching them sequentially and joining adjacent joints of the belt-like members to which the reinforcing material is attached to produce a helical pipe.

In such a method of rehabilitating existing pipes, it is known that a reinforcing member is attached to a band member in advance to form a band member with a reinforcing member, and the band member with the reinforcing member is wound around a drum and transported to the site. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 11-34166

  By the way, when a spiral tube is manufactured from the above-described band member with a reinforcing material, when a band member with a reinforcing material to which a stiff reinforcing material is attached to secure the self-supporting strength of the helical tube, the spiral tube is manufactured. At the time of pipe, a large restoring force that tries to restore the original radius of curvature acts on the band member with the reinforcing material, so that the spiral pipe gradually expands toward the tip, and the spiral pipe with a constant pipe diameter over a long distance. In addition, there is a problem that it is difficult to manufacture a spiral tube having a target diameter.

  For example, a band member with a reinforcing material wound around a drum has a certain radius of curvature, and is wound around the drum when the helical member is drawn from the outer peripheral side of the drum to produce a spiral tube. When the tube diameter of the spiral tube is smaller than the curl (curvature radius) of the band member with reinforcing material, the difference between the radius of curvature of the band member with reinforcing material is the same at the beginning of feeding of the band member with reinforcing material. It gets bigger. For this reason, when a spiral tube with a curvature radius smaller than the curvature radius is made using a reinforcement-like belt member wound around the drum with a certain curvature radius, a belt with a reinforcement material is formed when the spiral tube is produced. A restoring force that attempts to restore the original radius of curvature acts on the member and has a tendency to gradually expand the diameter, making it difficult to produce a helical tube having a target pipe diameter. In addition, since the pipe diameter of the spiral pipe is increased, the outer peripheral surface of the spiral pipe comes into contact with the inner peripheral face of the existing pipe in a larger area, the frictional resistance increases, and subsequent pipe making becomes difficult. There is also a possibility that a situation in which the spiral tube cannot be manufactured may occur.

  The present invention has been made in view of such a problem, and when a spiral pipe is manufactured using a band-shaped member with a reinforcing material in which a stiff reinforcing material is attached to the band-shaped member, a target pipe diameter is formed. In order to be able to reliably produce a spiral tube of a distance, a winding rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube is continuously formed on the band-shaped member with a reinforcing material. The present invention provides a curl forming apparatus that can be used.

  Further, the present invention, when producing a spiral tube using a reinforcing band member having a stiff reinforcing material attached to the band member, substantially equal to the radius of curvature of the spiral tube in the reinforcing band member, Alternatively, a spiral tube manufacturing method and a spiral tube manufacturing device capable of continuously forming spiral ridges having a radius of curvature equal to or less than the same and reliably manufacturing a spiral tube having a target tube diameter and distance. Is to provide.

  The apparatus for forming a curl of a belt-shaped member with a reinforcing material according to the present invention supplies a belt-shaped member with a reinforcing material to which a joint is formed at both side edge portions and a reinforcing material continuous in the longitudinal direction is mounted, and is adjacent to each other. A curl forming device for forming curl on a band-shaped member with a reinforcing material prior to joining them together to form a spiral tube, the curvature being approximately equal to or less than the radius of curvature of the spiral tube A curl guide having a radius and a feed roller disposed on the upstream side of the curl guide to push the band member with reinforcing material into the curl guide or a downstream side of the curl guide and wound with the reinforcing material strip It is composed of at least one of the feed rollers taken from the guide, and the reinforcing material is pushed into the curling guide or the reinforcing material is taken out of the curling guide and provided with the reinforcing material. An arc-shaped winding rod having a radius of curvature substantially equal to or less than the radius of curvature of the spiral tube is continuously formed on the shaped member, and the band-shaped member with the reinforcing material is plastically deformed in a spiral shape. Is.

  According to the present invention, prior to the production of the spiral tube, the band member with the reinforcing material is pushed into the curl guide through the feed roller, or the band member with the reinforcing material is removed from the curl guide through the feed roller. An arcuate curl having a curvature radius substantially equal to or less than the curvature radius of the spiral tube can be continuously formed on the band-shaped member with the reinforcing material that is taken up and moved along the curl guide. As a result, the band-shaped member with the reinforcing material can be plastically deformed into a spiral shape having a curvature radius substantially equal to or less than the curvature radius of the spiral tube.

  As a result, when the spiral tube is manufactured using the band-shaped member with the reinforcing material, it is possible to reliably manufacture the spiral tube having a target tube diameter and distance.

  Here, the radius of curvature of the arcuate curl formed on the band member with the reinforcing material is the same as the radius of curvature of the spiral tube, and may be slightly larger or slightly smaller, or the radius of curvature of the spiral tube The following may be used.

  The apparatus for forming a curl of a belt-shaped member with a reinforcing material according to the present invention supplies a belt-shaped member with a reinforcing material to which a joint is formed at both side edge portions and a reinforcing material continuous in the longitudinal direction is mounted, and is adjacent to each other. A curl forming device for forming curl on a band-shaped member with a reinforcing material prior to joining them together to form a spiral tube, the curvature being approximately equal to or less than the radius of curvature of the spiral tube A winding rod guide having a radius, a first pinch roller disposed on the upstream side of the winding rod guide, a second pinch roller disposed on the downstream side of the winding rod guide, and a first pinch roller or a second pinch roller. It consists of a motor that rotationally drives at least one of them, and pushes the belt-shaped member with the reinforcing material into the curling guide or pulls the belt-shaped member with the reinforcing material from the curling guide so that the curvature of the spiral tube is half the And of substantially equal, or, it is characterized in that an arcuate curl equivalent or less of the radius of curvature continuously formed, thereby plastically deforming the strip with reinforcement helically.

  According to the present invention, prior to the production of the spiral tube, the band member with reinforcing material is pushed into the curl guide via the first pinch roller, or the band member with reinforcing material is inserted through the second pinch roller. An arc-shaped winding rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube is continuously formed on the band-shaped member with the reinforcing material that is taken from the winding guide and moves along the winding guide. be able to. As a result, the band-shaped member with the reinforcing material can be plastically deformed into a spiral shape having a curvature radius substantially equal to or less than the curvature radius of the spiral tube.

  As a result, when the spiral tube is manufactured using the band-shaped member with the reinforcing material, it is possible to reliably manufacture the spiral tube having a target tube diameter and distance.

  Here, the radius of curvature of the arcuate curl formed on the band member with the reinforcing material is the same as the radius of curvature of the spiral tube, and may be slightly larger or slightly smaller, or the radius of curvature of the spiral tube The following may be used.

  Further, depending on the supply direction of the band member with the reinforcing material, the side to which the band member with the reinforcing material is supplied becomes the inlet, and the pinch roller disposed on the inlet side becomes the first pinch roller.

  The apparatus for forming a curl of a belt-shaped member with a reinforcing material according to the present invention supplies a belt-shaped member with a reinforcing material to which a joint is formed at both side edge portions and a reinforcing material continuous in the longitudinal direction is mounted, and is adjacent to each other. A curl forming apparatus for forming curl on a band-shaped member with a reinforcing material prior to joining them together to form a spiral tube, and a rotating frame supported rotatably on a support frame via a guide roller And a motor for rotating the rotating frame, a winding guide provided on the rotating frame and having a curvature radius substantially equal to or less than the curvature radius of the spiral tube, and disposed upstream of the winding guide. The first pinch roller, a second pinch roller disposed on the downstream side of the curl guide, and a motor that rotationally drives at least one of the first pinch roller or the second pinch roller. Rotate the belt in a direction opposite to the direction of supply of the band member with the reinforcing material, and push the band member with the reinforcing material into the winding guide, or take the band member with the reinforcing material from the winding guide and An arc-shaped winding rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube is continuously formed on the member, and the band-shaped member with the reinforcing material is plastically deformed in a spiral shape It is.

  According to the present invention, prior to the production of the spiral tube, the belt member with the reinforcing material is wound through the first pinch roller while the rotating frame is rotated in the direction opposite to the supply direction of the belt member with the reinforcing material. Or is pulled out from the curl guide through the second pinch roller, and the strip with the stiffener moves relatively along the curl guide. An arcuate curl having a radius of curvature equal to or less than the same can be continuously formed. As a result, the band-shaped member with the reinforcing material can be plastically deformed into a spiral shape having a curvature radius substantially equal to or less than the curvature radius of the spiral tube.

  In addition, by rotating the rotating frame in the direction opposite to the direction in which the band member with the reinforcing material is supplied and at the same speed as the supply speed, the revolving frame is revolved when being sent out from the curl forming apparatus. There is no relative excess or deficiency in the feeding of the helical member with the reinforcing material to the helical tube that is left and produced by the pipe making machine, and the twisting of the reinforcing member with the reinforcing material can be prevented. That is, when a spiral pipe is manufactured by a pipe making machine, a strip with a reinforcing material that is helical with respect to a spiral pipe that is left and manufactured because the rotating frame does not rotate or is rotated too slowly When the member is sent out excessively, the band member with reinforcement is twisted and the curl is turned over, or conversely, the rotation of the rotating frame is too fast, so that it is spiral with respect to the remaining spiral tube Thus, it is possible to prevent the band-shaped member with the reinforcing material from being deformed, and the winding diameter of the spiral-shaped band-shaped member with the reinforcing material is gradually reduced to deform the band-shaped member with the reinforcing material.

  As a result, when the spiral tube is manufactured using the band-shaped member with the reinforcing material, the spiral tube having the target tube diameter and distance can be reliably and smoothly manufactured.

  Here, the radius of curvature of the arcuate curl formed on the band member with the reinforcing material is the same as the radius of curvature of the spiral tube, and may be slightly larger or slightly smaller, or the radius of curvature of the spiral tube The following may be used.

  Further, depending on the supply direction of the band member with the reinforcing material, the side to which the band member with the reinforcing material is supplied becomes the inlet, and the pinch roller disposed on the inlet side becomes the first pinch roller.

  In the present invention, the curl guide is approximately the same as the radius of curvature of the spiral tube, or an arcuate spiral plate, cylindrical plate, or substantially the same as the radius of curvature of the spiral tube having a radius of curvature less than or equal to A plurality of rotating rollers that circumscribe an arcuate spiral surface or cylindrical surface having a radius of curvature equal to or less than the same are preferable. As a result, the band member with the reinforcing material moves along the spiral plate, the cylindrical plate, or the plurality of rotating rollers, so that the band member with the reinforcing material is substantially equal to or less than the radius of curvature of the spiral tube. It is possible to continuously form an arc-shaped winding rod having a curvature radius of and to be plastically deformed in a spiral shape.

  The method for manufacturing a helical tube according to the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges and provided with a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. In the pipe manufacturing method of the spiral pipe for manufacturing the spiral pipe, prior to joining the joint portions of the adjacent band members with the reinforcing material, substantially equal to the radius of curvature of the spiral pipe to the band member with the reinforcing material, Alternatively, an arc-shaped winding rod having a radius of curvature equal to or less than that is continuously formed, and the band-shaped member with the reinforcing material is plastically deformed in a spiral shape.

  According to the present invention, when supplying a band member with a reinforcing material and joining adjacent joints to form a spiral tube, prior to joining the joints of adjacent band members with a reinforcing material. Then, an arcuate winding rod having a curvature radius substantially equal to or less than the radius of curvature of the spiral tube is continuously formed on the band member with the reinforcing material, and the band member with the reinforcing material is plastically deformed in a spiral shape. be able to. Thereby, the adjacent joining parts of the strip | belt-shaped member with a helical reinforcement material plastically deformed beforehand to the curvature radius substantially equivalent to or less than the curvature radius of a spiral tube can be joined.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with the reinforcing material at the time of pipe production does not act, and the helical pipe having the target pipe diameter and distance is reliably produced. be able to.

  The method for manufacturing a helical tube according to the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges and provided with a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. A spiral tube is manufactured, and the manufactured spiral tube is rotated and fed forward, and a new band member with a reinforcing material is added to the rear of the manufactured spiral tube to add the spiral tube. In the method of making a spiral tube to be piped, prior to joining the joint portions of adjacent band members with reinforcing material, the band member with reinforcing material is substantially equal to or less than the radius of curvature of the helical tube. An arc-shaped winding rod having a radius of curvature is continuously formed, and the band-shaped member with the reinforcing material is plastically deformed in a spiral shape.

  According to the present invention, a belt-like member with a reinforcing material is supplied, joints adjacent to each other are joined together to produce a spiral tube, and the produced spiral tube is fed forward and rotated. When a pipe with a reinforcing material is newly supplied to the back of the spiral pipe and pipes are made while adding the helical pipe, the reinforcing material is attached prior to joining the joints of the adjacent belt-like members with the reinforcing material. An arc-shaped winding rod having a curvature radius substantially equal to or less than the radius of curvature of the spiral tube can be continuously formed on the band-shaped member, and the band-shaped member with the reinforcing material can be plastically deformed in a spiral shape. Thereby, the adjacent joining parts of the strip | belt-shaped member with a helical reinforcement material plastically deformed beforehand to the curvature radius substantially equivalent to or less than the curvature radius of a spiral tube can be joined.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with the reinforcing material at the time of pipe production does not act, and the helical pipe having the target pipe diameter and distance is reliably produced. be able to.

  The method for manufacturing a helical tube according to the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges and provided with a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. The spiral tube is manufactured while the spiral tube is made to remain, and the formed spiral tube is left behind, and a band member with a reinforcing material is newly supplied to the front of the manufactured spiral tube, and the spiral tube is added. In the pipe manufacturing method, prior to joining the joints of the adjacent band members with reinforcing material, the circle with a curvature radius substantially equal to or less than the radius of curvature of the spiral tube is attached to the band member with reinforcing material. An arcuate curl is continuously formed, and the belt-like member with the reinforcing material is plastically deformed in a spiral shape.

  According to the present invention, the belt-shaped member with the reinforcing material is supplied, the joint portions adjacent to each other are joined to form a spiral tube, and the spiral tube that has been manufactured is left, and the spiral tube that is manufactured When supplying a band member with a reinforcing material to the front and making a pipe while adding a spiral tube, prior to joining the joint portions of the adjacent band members with a reinforcing material to the band member with the reinforcing material, An arc-shaped winding rod having a curvature radius substantially equal to or less than the curvature radius of the tube can be continuously formed, and the belt-like member with the reinforcing material can be plastically deformed in a spiral shape. Thereby, the adjacent joining parts of the strip | belt-shaped member with a helical reinforcement material plastically deformed beforehand to the curvature radius substantially equivalent to or less than the curvature radius of a spiral tube can be joined.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with the reinforcing material at the time of pipe production does not act, and the helical pipe having the target pipe diameter and distance is reliably produced. be able to.

  The spiral pipe manufacturing apparatus of the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges, and a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. A spiral tube is manufactured, and the manufactured spiral tube is rotated and fed forward, and a new band member with a reinforcing material is added to the rear of the manufactured spiral tube to add the spiral tube. In the spiral pipe pipe making machine, the curl forming apparatus according to claim 1 or 4 is provided integrally with the pipe making machine in a preceding stage of a joining mechanism for joining adjacent joining portions of the band-like members with reinforcing members. The band member with reinforcing material is pushed into the curl guide, or the band member with reinforcing material is taken out of the curl guide, and the band member with reinforcing material has a curvature substantially equal to or less than the curvature radius of the spiral tube. Continuously forming a circular arc-shaped winding rod with a radius And is characterized in that the supply to the joining mechanism profile strip with reinforcement by plastically deforming spirally.

  According to the present invention, a belt-like member with a reinforcing material is supplied, joints adjacent to each other are joined together to produce a spiral tube, and the produced spiral tube is fed forward and rotated. A mechanism for joining the joining portions of the adjacent band members with reinforcing material in a pipe manufacturing machine of a helical tube that makes a pipe while adding a helical tube by newly supplying a band member with reinforcing material to the rear of the spiral pipe The curl forming device including the curl guide and the feed roller is integrally attached to the preceding stage. Accordingly, the reinforcement member moves along the curl guide by pushing the strip member with the reinforcing material into the curl guide via the feed roller or by pulling the strip member with the stiffener from the curl guide via the feed roller. An arc-shaped winding rod having a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube is continuously formed on the band-shaped member with a material, and the band-shaped member with a reinforcing material is plastically deformed in a spiral shape to form a joining mechanism. Can be supplied to. Therefore, in the joining mechanism, adjacent joining portions of the strip-shaped member with the spiral reinforcing material plastically deformed in advance to a curvature radius substantially equal to or less than the curvature radius of the spiral tube can be joined.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with the reinforcing material at the time of pipe production does not act, and the helical pipe having the target pipe diameter and distance is reliably produced. be able to.

  The spiral pipe manufacturing apparatus of the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges, and a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. A spiral tube is manufactured, and the manufactured spiral tube is rotated and fed forward, and a new band member with a reinforcing material is added to the rear of the manufactured spiral tube to add the spiral tube. In the pipe making machine of the spiral pipe to be piped, the curl forming apparatus according to claim 2 or 4 is provided separately in the front stage of the pipe making machine, and the band member with a reinforcing material is pushed into the curl forming apparatus, or Taking the band member with reinforcing material from the curl forming device, continuously forming an arc-shaped winding rod with a curvature radius substantially equal to or less than the curvature radius of the spiral tube on the band member with reinforcing material, Pipe-making by reinforcing plastic strips with reinforcement It is characterized in that to supply the.

  According to the present invention, a belt-like member with a reinforcing material is supplied, joints adjacent to each other are joined together to produce a spiral tube, and the produced spiral tube is fed forward and rotated. In a spiral tube pipe making machine that newly supplies a band member with a reinforcing material to the rear of the spiral tube and adds a spiral tube to the tube, it is provided on the upstream side and the downstream side of the spiral rod guide, respectively. A curl forming device comprising a pinch roller and a motor that rotationally drives one of the pinch rollers is provided separately from the former stage of the pipe making machine. Thereby, the strip-like member with the reinforcing material is pushed into the curling guide through the first pinch roller at a position away from the pipe making machine, or the strip-like member with the reinforcing material is pushed from the curling guide through the second pinch roller. Takes and forms a circular winding rod with a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube on the band member with reinforcement that moves along the winding guide, and has a reinforcement. The belt-shaped member can be plastically deformed in a spiral shape and supplied to the joining mechanism of the pipe making machine. Therefore, in the joining mechanism of the pipe making machine, adjacent joining portions of the strip-shaped member with the spiral reinforcing material that has been plastically deformed to a curvature radius substantially equal to or less than the curvature radius of the spiral tube in advance are joined together. be able to.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with the reinforcing material at the time of pipe production does not act, and the helical pipe having the target pipe diameter and distance is reliably produced. be able to.

  In this invention, it is preferable that the said curl formation apparatus is installed on the ground near the start side manhole. This makes it possible to make the radius of curvature of the belt-like member with the reinforcing material smaller than the radius of curvature when the belt-like member is wound around the drum, and even if the diameter of the starting manhole is small, the helical reinforcing material is attached. The strip member can be smoothly supplied to the joining mechanism of the pipe making machine through the manhole.

  The spiral pipe manufacturing apparatus of the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges, and a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. The spiral tube is manufactured while the spiral tube is made to remain, and the formed spiral tube is left behind, and a band member with a reinforcing material is newly supplied to the front of the manufactured spiral tube, and the spiral tube is added. In the above pipe making machine, the curl forming apparatus according to claim 1 or 4 is provided integrally with the pipe making machine in a preceding stage of a joining mechanism for joining the joining portions of the adjacent belt-like members with the reinforcing material. Push the member into the curl guide, or pull the reinforcing band member from the curl guide, and the reinforcing band member has an arc shape with a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube. Continuously forming a winding rod with a reinforcing material Is characterized in that supplying member to the joint mechanism is plastically deformed in a spiral.

  According to the present invention, the belt-shaped member with the reinforcing material is supplied, the joint portions adjacent to each other are joined to form a spiral tube, and the spiral tube that has been manufactured is left, and the spiral tube that is manufactured In the pipe manufacturing machine of the spiral tube that supplies the band member with the reinforcing material to the front and makes the pipe while adding the spiral tube, in the front stage of the joining mechanism that joins the joining portions of the adjacent band members with the reinforcing material, A curl forming device including a curl guide and a feed roller is integrally provided. Accordingly, the reinforcement member moves along the curl guide by pushing the strip member with the reinforcing material into the curl guide via the feed roller or by pulling the strip member with the stiffener from the curl guide via the feed roller. An arc-shaped winding rod having a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube is continuously formed on the band-shaped member with a material, and the band-shaped member with a reinforcing material is plastically deformed in a spiral shape to form a joining mechanism. Can be supplied to. Therefore, in the joining mechanism, adjacent joining portions of the strip-shaped member with the spiral reinforcing material plastically deformed in advance to a curvature radius substantially equal to or less than the curvature radius of the spiral tube can be joined.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with the reinforcing material at the time of pipe production does not act, and the helical pipe having the target pipe diameter and distance is reliably produced. be able to.

  The spiral pipe manufacturing apparatus of the present invention supplies a band-shaped member with a reinforcing material having joints formed on both side edges, and a reinforcing material continuous in the longitudinal direction, and joins adjacent joints to each other. The spiral tube is manufactured while the spiral tube is made to remain, and the formed spiral tube is left behind, and a band member with a reinforcing material is newly supplied to the front of the manufactured spiral tube, and the spiral tube is added. 5. The pipe making machine according to claim 3, wherein the curl forming apparatus according to claim 3 or 4 is provided separately from the former stage of the pipe making machine, and the rotating frame is reinforced while rotating in the direction opposite to the feeding direction of the belt-like member with the reinforcing material. The band member with material is pushed into the curl forming device, or the band member with reinforcing material is taken out of the curl forming device, and the band member with reinforcing material is substantially equal to or less than the radius of curvature of the spiral tube. Continuously forming arc-shaped winding rods with a radius of curvature And it is characterized in that to supply the belt-shaped member with the reinforcing material by plastically deforming spirally pipe producing machine.

  According to the present invention, the belt-shaped member with the reinforcing material is supplied, the joint portions adjacent to each other are joined to form a spiral tube, and the spiral tube that has been manufactured is left, and the spiral tube that is manufactured In a spiral tube pipe making machine that feeds a band member with a reinforcing material to the front and makes a pipe while adding a spiral tube, the rotating frame is provided on the upstream side and the downstream side of the winding rod guide, respectively. A curl forming device provided with a pinch roller and a motor that rotationally drives one of the pinch rollers is provided separately from the former stage of the pipe making machine. Thereby, the belt-like member with the reinforcing material is pushed into the curl guide via the first pinch roller while rotating the rotary frame at a position away from the pipe making machine, or the belt-like member with the reinforcing material is pushed into the second pinch roller. An arc-shaped winding rod having a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube on a band member with a reinforcing member that is taken from the winding rod guide through the guide and moves relatively along the winding rod guide. Can be continuously formed, and the belt-like member with the strong material can be plastically deformed in a spiral shape and supplied to the joining mechanism of the pipe making machine. Therefore, in the joining mechanism of the pipe making machine, adjacent joining portions of the strip-shaped member with the spiral reinforcing material that has been plastically deformed to a curvature radius substantially equal to or less than the curvature radius of the spiral tube in advance are joined together. be able to.

  In addition, by rotating the rotating frame in the direction opposite to the direction in which the band member with the reinforcing material is supplied and at the same speed as the supply speed, the revolving frame is revolved when being sent out from the curl forming apparatus. There is no relative excess or deficiency in the feeding of the helical member with the reinforcing material to the helical tube that is left and produced by the pipe making machine, and the twisting of the reinforcing member with the reinforcing material can be prevented. That is, when a spiral pipe is manufactured by a pipe making machine, a strip with a reinforcing material that is helical with respect to a spiral pipe that is left and manufactured because the rotating frame does not rotate or is rotated too slowly When the member is sent out excessively, the band member with reinforcement is twisted and the curl is turned over, or conversely, the rotation of the rotating frame is too fast, so that it is spiral with respect to the remaining spiral tube Thus, it is possible to prevent the band-shaped member with the reinforcing material from being deformed, and the winding diameter of the spiral-shaped band-shaped member with the reinforcing material is gradually reduced to deform the band-shaped member with the reinforcing material.

  As a result, the restoring force that tries to restore the original radius of curvature wound around the drum on the belt-like member with a reinforcing material at the time of pipe production does not act, and the helical tube of the target pipe diameter and distance is reliably and Pipes can be produced smoothly.

  In the present invention, it is preferable that the curl forming apparatus is installed on the ground near the start side manhole or in the start side manhole. This makes it possible to make the radius of curvature of the belt-like member with the reinforcing material smaller than the radius of curvature when the belt-like member is wound around the drum, and even if the diameter of the starting manhole is small, the helical reinforcing material is attached. The strip member can be smoothly supplied to the joining mechanism of the pipe making machine through the manhole. Further, even if the pipe diameter of the spiral tube is small, the strip-shaped member with the spiral reinforcing material can be smoothly supplied to the joining mechanism of the pipe making machine through the spiral tube.

  According to the curl forming apparatus of the present invention, when a spiral tube is manufactured using a reinforcing band member having a stiff reinforcing member attached to the band member, the spiral tube having a target tube diameter and distance is formed. In order to reliably produce the pipe, it is possible to continuously form a winding rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube on the band member with the reinforcing material.

  In addition, according to the method of manufacturing a spiral tube and the device for manufacturing a spiral tube, when a spiral tube is manufactured using a band-shaped member with a reinforcing material in which a stiff reinforcing material is attached to the band-shaped member, the reinforcing material is attached. A spiral tube having a target tube diameter and distance can be reliably produced by continuously forming a winding rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube on the band-shaped member. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, prior to describing the embodiment of the pipe producing apparatus 1 of the present invention, one embodiment of a band member 100 with a reinforcing material used will be described with reference to FIG.

  The belt-like member 100 with the reinforcing material includes a belt-like member 110 and a reinforcing material 120 attached to the belt-like member 110.

  The belt-shaped member 110 is formed by extrusion molding a flexible synthetic resin, for example, hard vinyl chloride, polyethylene, polypropylene, and the like, and a plurality of belt-shaped members 110 (two in the embodiment) are formed on the back surface of the belt-shaped substrate 111. Reinforcing ribs 112 having a T-shaped cross section are provided with their tips positioned parallel to the substrate 111. On the back surface of one side edge portion of the substrate 111, a bonding convex portion 113 is erected. The other side edge portion of the substrate 111 is formed in a stepped portion 114 that is stepped down to the back side by the thickness of the substrate 111 so that the side edge portion of the substrate 111 provided with the bonding convex portion 113 is disposed. In addition, a joint recess 115 into which the joint protrusion 113 can be fitted is provided in the stepped-down portion 114. The bonding recess 115 is formed with an inclined rib 116 that is inclined so as to be positioned on the protruding side of the bonding recess 115 as it is away from the substrate 111, and the tip of the inclined rib 116 forms one side edge of the band-shaped member 110. Forming.

  The reinforcing member 120 is a strip-shaped steel plate that is continuous in the longitudinal direction and has a substantially W-shaped cross section. The reinforcing member 120 is mounted over a plurality of reinforcing ribs 112 of the band-shaped member 110. Specifically, the reinforcing member 120 is externally attached to the central flat portion 121, the hanging portions 122 and 122 bent downward from the left and right end edges of the central flat portion 121, and the lower end edges of the left and right hanging portions 122. Left and right flat portions 123 and 123 bent horizontally, and inclined portions 124 and 124 bent obliquely upward and outward from the outer ends of the left and right flat portions 123, respectively. 123 is placed on the substrate 111 between the left and right reinforcing ribs 112 of the band-shaped member 110, and the tips of the left and right inclined portions 124 are locked to the left and right reinforcing ribs 112, respectively. It is installed.

  Then, the belt-like member 110 that has been extruded into a predetermined cross-sectional shape and wound on the take-up drum is fed out from the take-up drum, and the reinforcing material 120 is placed at a predetermined position of the belt-like member 110 by a reinforcing material mounting device (not shown). Then, the belt-like member 110 to which the reinforcing material 120 is attached, that is, the belt-like member 100 with the reinforcing material is wound around the drum D (see FIG. 8) and transported to the site.

  Such a belt-like member 100 with a reinforcing material is supplied to the pipe making machine 4 to be described later so that the back side of the substrate 111, that is, the side where the reinforcing ribs 112 and the like are erected is the outer peripheral side. As shown in FIGS. 2 (a) and 2 (b), of the two band members 100, 100 with reinforcing material adjacent to each other, the joint convex portion 113 of one band member 100 with reinforcing material is provided with the other reinforcing material. By fitting the joining concave portion 115 of the belt-like member 100 from the outside (the outer peripheral side of the preceding belt-like member 100 with reinforcing material), the mutually adjacent belt-like members 100, 100 with reinforcing material are joined to each other to form a predetermined tube. A spiral tube S having a diameter (see FIG. 8) can be manufactured.

  At this time, the stepped portion 114 of the reinforcing band member 100 with the reinforcing material is disposed on the side edge portion of the substrate 111 provided with the joining convex portion 113 of the preceding belt member 100 with the reinforcing material, and the preceding reinforcing material is provided. The inclined rib 116 of the band member 100 with the reinforcing material is locked to the reinforcing rib 112 on the side where the joint convex portion 113 of the band member 100 is provided.

  Next, an embodiment of the pipe making apparatus 1 will be described with reference to FIGS. 3 and 4.

  This pipe manufacturing apparatus 1 supplies the strip | belt-shaped member 100 with a reinforcing material continuously spirally so that an axial center may become substantially horizontal, and the side edge parts of the width direction of the strip | belt-shaped member 100 with a reinforcing material which adjoin each other are supplied. The spiral tube S is continuously manufactured by joining, and the spiral tube S that has been manufactured is pushed out of the tube manufacturing apparatus 1 while being rotated.

  The pipe making apparatus 1 is configured by integrally providing a curl forming apparatus 3 and a pipe making machine 4 on a support base 2.

  The curl forming device 3 is disposed on a downstream side of the curl guide 31, a spiral curl guide 31 made of a steel plate formed in a spiral shape, a first feed roller 32 disposed on the upstream side of the curl guide 31. And a second feed roller 33.

  The curl guide 31 is a spiral plate that has a radius of curvature substantially equal to the outer diameter of the spiral tube S manufactured by the band member 100 with the reinforcing material and is formed in a substantially semicircular cross section. By forming the reinforcing strip-like member 100 supplied along the inner circumferential surface of the spiral plate over almost a half circumference, the winding member 100 with the reinforcing material is formed with a curvature radius corresponding to the curvature radius of the winding guide 31. Then, it is plastically deformed in a spiral shape. That is, the reinforcing material 120 of the belt-shaped member 100 with the reinforcing material is plastically deformed to a curvature radius substantially corresponding to the curvature radius of the spiral pipe S to be manufactured.

  In this case, the radius of curvature of the curl guide 31 may be a radius of curvature equal to or less than the outer diameter of the spiral tube S to be manufactured.

  As shown in FIG. 5, the first feed roller 32 includes a first pinch roller 321 in which a first inner surface roller 322 and a first outer surface roller 323 are paired, and a gear of a gear box 324 fixed to the support frame 2 ( And a first hydraulic motor 325 that rotates a first pinch roller 321 via a first pinch roller 321 via a rotation axis of the first inner roller 322 and a first outer roller 323. It is arranged so that the axial direction is orthogonal to the lead angle to which the strip member 100 with the reinforcing material is supplied so as to be supplied in a spiral shape, and rotates to the gear box 324 together with the output shaft of the first hydraulic motor 325. It is supported freely. Then, by rotating the first hydraulic motor 325, the first inner surface roller is connected to the output shaft, the first inner surface roller 322, and the first outer roller 323 through the gears fixed to and meshing with each other. 322 and the first outer surface roller 323 are rotated in opposite directions, and the band member 100 with the reinforcing material is sandwiched between the first inner surface roller 322 and the first outer surface roller 323 and sent out toward the curl guide 31.

  Here, the first inner surface roller 322 has a width substantially equivalent to the width of the band-like member 100 with the reinforcing material and is formed into a cylindrical shape with iron or the like, and the outer peripheral surface thereof is the flat inner surface of the band-like member 100 with the reinforcing material. In other words, the outer diameter is set so as to rotate in contact with the inner peripheral surface of the spiral tube S.

  Further, the first outer surface roller 323 has a width that can be inserted between the adjacent reinforcing ribs 112 and 112 of the band member 100 with the reinforcing material so as to be disposed between the reinforcing ribs 112 and 112 of the band member 100 with the reinforcing material. The outer peripheral surface and the outer peripheral surface of the first inner surface roller 322 are provided with an interval corresponding to the thickness of the substrate 111 of the band-shaped member 110 in the band-shaped member 100 with the reinforcing material. The diameter is set. Therefore, the outer peripheral surface of the first outer roller 323 is between the adjacent reinforcing ribs 112 and 112 of the band member 100 with the reinforcing material, on the back surface of the band member 100 with the reinforcing material, that is, the outer surface of the spiral tube S. Rotates in contact with the surface.

  The outer peripheral surface of the first outer surface roller 323 is knurled, and feeds the belt-like member 100 with the reinforcing material without slipping.

  The second feed roller 33 has the same structure as the first feed roller 32 and is arranged on the downstream side of the curl guide 31. That is, the second feed roller 33 includes a second pinch roller 331 in which a second inner surface roller 332 and a second outer surface roller 333 are combined, and a gear (not shown) of a gear box 334 fixed to the support frame 2. The second hydraulic motor 335 rotates the second pinch roller 331, and the rotation shaft of the second inner surface roller 332 and the rotation shaft of the second outer surface roller 333 supply the belt-like member 100 with the reinforcing material in a spiral shape. As described above, the reinforcing member is disposed so that the axial direction is orthogonal to the lead angle to which the belt-like member 100 with the reinforcing material is supplied, and is rotatably supported by the gear box 334 together with the output shaft of the second hydraulic motor 335. ing. Then, by rotating the second hydraulic motor 335, the second inner surface roller is connected to the output shaft, the second inner surface roller 332, and the second outer surface roller 333 through the gears fixed to and meshing with each other. 332 and the second outer surface roller 333 are rotated in opposite directions, and the belt-like member 100 with the reinforcing material is sandwiched between the second inner surface roller 332 and the second outer surface roller 333 and sent out from the curl guide 31.

  Here, the second inner surface roller 332 has a width substantially equivalent to the width of the band member 100 with the reinforcing material and is formed into a cylindrical shape with iron or the like, and the outer peripheral surface thereof is a flat inner surface of the band member 100 with the reinforcing material. In other words, the outer diameter is set so as to rotate in contact with the inner peripheral surface of the spiral tube S.

  Further, the second outer surface roller 333 has a width that can be inserted between the adjacent reinforcing ribs 112 and 112 of the reinforcing band member 100 so as to be disposed between the reinforcing ribs 112 and 112 of the reinforcing band member 100. The outer peripheral surface and the outer peripheral surface of the second inner surface roller 332 are provided with an interval corresponding to the thickness of the substrate 111 of the band-shaped member 110 in the band-shaped member 100 with the reinforcing material. The diameter is set. Therefore, the outer peripheral surface of the second outer roller 333 is located between the adjacent reinforcing ribs 112 and 112 of the band member 100 with the reinforcing material, on the back surface of the band member 100 with the reinforcing material, that is, the outer surface of the spiral tube S. Rotates in contact with the surface.

  Note that the outer peripheral surface of the second outer roller 333 is knurled, and feeds the belt-like member 100 with the reinforcing material without slipping.

  The pipe making machine 4 includes a joining mechanism 5 that joins adjacent spiral reinforcing band members 100, 100 to each other, and an adjacent spiral reinforcing member strips 100, 100 that are joined together by the joining mechanism 5. The guide frame 6 that guides the spiral pipe S that has been manufactured, and is disposed in the subsequent stage of the curl forming apparatus 3 described above.

  As shown in FIG. 6, the joining mechanism 5 includes a pinch roller 51 in which a tube-forming roller 52 and a drive roller 53 are combined, and a gear (not shown) of a gear box 54 fixed to the support frame 2. It comprises a hydraulic motor 55 that rotates the pinch roller 51, and the rotational axis of the tube-making roller 52 and the rotational axis of the drive roller 53 are arranged so that the axial direction is orthogonal to the lead angle of the spiral tube S, Along with the output shaft of the motor 55, each is rotatably supported by the gear box 54. Then, by rotating the hydraulic motor 55, the tube-making roller 52 and the driving roller 53 are fixed to the output shaft, the rotating shaft of the tube-forming roller 52, and the rotating shaft of the driving roller 53, respectively, via gears that mesh with each other. The belts 100 are rotated in opposite directions, and the band-like member 100 with a reinforcing material is sandwiched between the tube-making roller 52 and the driving roller 53 and sent out toward the guide frame 6.

  Here, the tube-forming roller 52 has a length that is approximately twice the width of the belt-shaped member 100 with the reinforcing material and is formed into a cylindrical shape with iron or the like, and precedes the belt-shaped member 100 with the spiral reinforcing material. And the subsequent spiral-shaped reinforcing member-like band member 100 are joined so that the outer peripheral surface comes into contact with the smooth inner peripheral surface of the spiral tube S by the adjacent reinforcing member-like band members 100, 100 and rotates. The outer diameter is set.

  In addition, as described above, the driving roller 53 is formed by joining the preceding spiral reinforcing band member 100 with the reinforcing member and the succeeding spiral reinforcing member band member 100 with the reinforcing member adjacent to each other. , 100, a plurality of strips having a width that can be inserted between adjacent reinforcing ribs 112, 112 of the band member 100 with reinforcing material so as to be disposed between the reinforcing ribs 112, 112 of the band member 100 with reinforcing material. The outer diameter is set so as to have an interval corresponding to the thickness of the substrate 111 of the band-shaped member 110 in the band-shaped member 100 with the reinforcing material between the outer peripheral surface and the outer peripheral surface of the tube-making roller 52. Yes. Therefore, the outer peripheral surface of the driving roller 53 is joined between the adjacent reinforcing ribs 112 and 112 of the respective band members 100 with reinforcing materials and the outer peripheral surface of the spiral tube S formed by the adjacent band members 100 and 100 with reinforcing materials. It rotates in contact with the back surface of the belt-like member 100 with the reinforcing material on the side.

  Note that the outer peripheral surface of the drive roller 53 is knurled, and the adjacent belt members 100 and 100 with a reinforcing material are fed without slipping.

  The guide frame 6 is rotatably provided on a plurality of link bodies 61 in which a pair of link members 62 and 63 are rotatably connected via a connecting shaft 64, and on the connecting shaft 64 of each link body 61. A plurality of link bodies 61 provided with the guide rollers 65 are connected to each other to form a substantially annular shape.

  Here, as shown in FIG. 7, the link members 62 and 63 that constitute each link body 61 include front plates 62a and 63a, rear plates 62b and 63b, front plates 62a and 63a, and rear plates 62b, It is formed in a U-shape from connecting plates 62c and 63c installed between opposite ends of 63b. Then, the other opposite end portions of the front plate 63a and the rear plate 63b in the link member 63 are overlapped with the other opposite end portions of the front plate 62a and the rear plate 62b in the link member 62, and they are rotated via the connecting shaft 64. A link body 61 is formed by being movably connected.

  The adjacent link bodies 61 and 61 are appropriately combined with the connecting plates 62c and 63c of the link members 62 and 63 constituting the link body 61 and the connecting plates 62c and 63c of the link members 62 and 63 constituting the link body 61. And are detachably connected via bolts and nuts (not shown).

  However, if the specific adjacent link bodies 61, 61 in the guide frame 6 can be attached and detached, the link bodies 61, 61 can be detached and the guide frame 6 can be formed in a straight line, so that the remaining connecting plates 62c, 63c May be fixed non-detachable by welding or the like.

  Further, a rotation restricting piece 67 is provided at each of the other end portions of the front side plate 63a and the rear side plate 63b of the link member 63, while each other end portion of the front side plate 62a and the rear side plate 62b of the link member 62 is provided. The notch 66 corresponding to the rotation restricting piece 67 described above is formed over a certain range on a set radius around the rotation center of the connecting shaft 64, and the rotation range of the link member 63 relative to the link member 62 is formed. Is restricted by a rotation restricting piece 67 that contacts the notch 66. This restricts the link body 61 from bending inward.

  The guide roller 65 is made of synthetic resin or metal, and is rotatably supported around the connecting shaft 64 via a bearing 68. The guide roller 65 is formed on the flat inner surface of the reinforcing band member 100, that is, on the inner peripheral surface of the spiral tube S. Contact.

  Further, the guide roller 65 is provided with a reinforcing material in order to supply the downstream side of the spiral tube S formed from the adjacent band members 100, 100 with the reinforcing material joined together by the joining mechanism 5 in the existing pipe K. It arrange | positions so that it may become a right angle with respect to the strip | belt-shaped member 100. FIG. In order to arrange the guide roller 65 so as to be perpendicular to the band member 100 with the reinforcing material constituting the spiral tube S, for example, a pair of link bodies 61, 61 of the guide frame 6 adjacent to the joining mechanism 5 are arranged. In this connection part, one link body 61 may be moved in the tube axis direction with respect to the other link body 61, and fixed to the joining mechanism 5 in the moved state.

  Next, pipe making of the spiral pipe S that regenerates the existing pipe K using the pipe making apparatus 1 configured as described above will be described with reference to FIGS. 8 and 9.

-Preparation before construction-
First, the existing pipe K is provided with manholes M and M for each predetermined span. In this example, the manhole on the upstream side of the construction target area (rehabilitation area) is set as the start side manhole M1, and the manhole on the downstream side is set as the arrival side. A manhole M2 is formed, and a spiral tube S is formed in the existing pipe K using these manholes M1 and M2. The spiral pipe S is manufactured from the start side manhole M1 of the existing pipe K toward the arrival side manhole M2.

  In the pipe making of the spiral pipe S, a power unit comprising a drum D (with a turntable) and a pipe making apparatus 1 around which the band member 100 with reinforcing material shown in FIG. W or the like is used. Among these, the drum D and the power unit W are installed on the ground on the start side manhole M1 side. Moreover, the pipe making apparatus 1 is installed in the invert of the start side manhole M1.

  At that time, the pipe making apparatus 1 is disassembled into the support base 2, the curl forming apparatus 3, and the pipe making machine 4, and the pipe making machine 4 is further disassembled into the joining mechanism 5 and the guide frame 6 and carried in, and the start side It is assembled in the manhole M1. Thereafter, the hydraulic piping from the power unit W is connected to the hydraulic motors 325 and 335 of the curl forming apparatus 3 and the hydraulic motor 55 of the joining mechanism 5 in the pipe making machine 4.

  In addition, about the guide frame 6, the connection part of a pair of adjacent link bodies 61 and 61 is removed, a plurality of link bodies 61 are carried in one row, and a pair of adjacent link bodies 61, The connecting portions 61 are connected to form a substantially ring shape and are attached to the support frame 2.

  For the pipe making apparatus 1, the winding guide 31 having a corresponding curvature radius is prepared according to the pipe diameter of the spiral pipe S to be piped, and the circumference of the guide frame 6 (the number of link bodies 61) is set. Adjust it.

  Furthermore, the pipe making apparatus 1 is adjusted so as to have a spiral pitch corresponding to the inner diameter of the existing pipe K to be rehabilitated and the width of the band member 100 with the reinforcing material to be used.

  When the preparatory work is completed, the belt-like member 100 with the reinforcing material is pulled out from the outer peripheral side of the drum D placed on the ground and drawn into the start-side manhole M1, and the leading end of the first feed roller 32 in the curl forming apparatus 3 is drawn. After passing through the pinch roller 321, an arcuate curl with a curvature radius corresponding to the curvature radius is formed along the inner peripheral surface of the curl guide 31, and then the pinch roller 331 of the second feed roller 33. Then, it is plastically deformed in a spiral shape, and then inserted into the pinch roller 51 of the joining mechanism 5 in the pipe making machine 4 and sent out to the outer peripheral side of the guide frame 6.

  By pulling out the belt-like member 100 with the reinforcing material from the outer peripheral side of the drum D and sequentially supplying it to the pipe making machine 4 through the curl forming device 3, the leading end of the belt-like member 100 with the reinforcing material moves the outer peripheral side of the guide frame 6. When it is rotated and inserted again into the pinch roller 51 of the joining mechanism 5, the subsequent band member 100 with a reinforcing material is inserted into the pinch roller 51 of the joining mechanism 5. As a result, the joining concave portion 115 of the subsequent spiral reinforcing material-like band member 100 is inserted into the joining convex portion 113 of the preceding spiral reinforcing material-like belt member 100 from the outer peripheral side, and the preceding reinforcing material-like belt shape with the reinforcing material is provided. The stepped portion 114 of the subsequent band member 100 with the reinforcing material is arranged on the side edge portion of the substrate 111 on which the bonding convex portion 113 of the member 100 is provided, and the bonding convex portion of the preceding band member 100 with the reinforcing material is further provided. The reinforcing rib 112 on the side provided with 113 is engaged with the inclined rib 116 of the subsequent band member 100 with reinforcing material, and the adjacent band members 100, 100 with reinforcing material are joined to each other to start the helical tube S. 'Begin pipe making. Similarly, the belt-like member 100 with the reinforcing material is fed into the curl forming device 3 to form an arc-shaped curl with a radius of curvature corresponding to the radius of curvature of the curl guide 31 to be plastically deformed in a spiral shape, 5 is inserted several times (about 1 to 3 times) to produce the starting spiral tube S ′.

-Pipe making of spiral pipe S by pipe making device 1-
After the start spiral pipe S ′ is completed, the first feed roller 32 and the second feed roller 33 of the curl forming apparatus 3 constituting the pipe making apparatus 1 are driven, and the pipe making machine 4 The joining mechanism 5 is driven. As a result, the first hydraulic motor 325 of the first feed roller 32 is rotationally driven to rotate the first pinch roller 321, and the belt-like member 100 with the reinforcing material is sandwiched between the first inner surface roller 322 and the first outer surface roller 323, and the drum Pull out from D and push toward curl guide 31. For this reason, the belt-shaped member 100 with the reinforcing material moves along the curl guide 31 and arc-shaped curl having a curvature radius corresponding to the curvature radius of the curl guide 31 is continuously formed, and is plastic in a spiral shape. Deformed.

  Further, the second hydraulic motor 335 of the second feed roller 33 is driven to rotate and the second pinch roller 331 is rotated, and the belt-like member 100 with the reinforcing material is sandwiched between the second inner surface roller 332 and the second outer surface roller 333 and wound. It is taken out from the guide 31 and sent out toward the joining mechanism 5 of the pipe making machine 4. For this reason, the belt-like member 100 with the reinforcing material is formed by continuously forming an arcuate winding rod having a radius of curvature corresponding to the curvature radius of the winding rod guide 31 and plastically deforming in a spiral shape. 5 is supplied.

  Further, the hydraulic motor 55 of the joining mechanism 5 is rotationally driven to rotate the pinch roller 51, and the belt-like member 100 with the reinforcing material is sandwiched between the tube-making roller 52 and the driving roller 53 and taken out from the curl forming device 3. 6 to the outer peripheral side. At this time, the joining concave portion 115 of the subsequent spiral reinforcing material-like band member 100 is inserted into the joining convex portion 113 of the preceding spiral reinforcing material-like belt member 100 from the outer peripheral side, and the preceding reinforcing material-like band shape with the reinforcing material. The stepped portion 114 of the subsequent band member 100 with the reinforcing material is disposed on the rear end side edge of the substrate 111 in the member 100, and further, the reinforcing rib 112 on the rear end side of the preceding band member 100 with the reinforcing material is provided. Then, the inclined ribs 116 of the subsequent band member 100 with reinforcing material are locked, and the adjacent band members 100 and 100 with spiral reinforcing material are joined to each other to form the helical tube S (FIG. 2B). reference).

  As a result, the spiral-shaped reinforcing member-equipped strip members 100, 100 adjacent to each other behind the start spiral tube S ′ are joined to each other to continuously manufacture the spiral tube S, and together with the start spiral tube S ′, the spiral tube S is sent out while rotating toward the reaching manhole M2.

  At this time, the rotation drive of the pinch roller 51 of the joining mechanism 5 in the pipe making machine 4, the rotation drive of the first pinch roller 321 of the first feed roller 32 and the second pinch roller of the second feed roller 33 in the curl forming apparatus 3. The rotational drive of 331 is controlled to drive in synchronism.

  As described above, the belt-like member 100 with the reinforcing material is fed out from the first pinch roller 321 of the first feed roller 32 and moves along the curl guide 31, and the curl from the second pinch roller 331 of the second feed roller 33. A belt-like member 100 with a reinforcing material which is formed into an arc-shaped winding rod having a radius of curvature corresponding to the radius of curvature of the guide 31 and is plastically deformed in a spiral shape is sent out, and further, a pinch roller of the joining mechanism 5 of the pipe making machine 4 Adjacent band members 100 and 100 with reinforcing material are joined to each other by 51 to form a helical tube S, and are sent out along the guide frame 6 while rotating toward the reaching manhole M2.

  As a result, the belt-like member 100 with the reinforcing material is formed into a spiral shape by continuously forming the arcuate curl having a radius of curvature substantially equal to the target radius of curvature of the spiral tube S through the curl forming device 3. After being deformed, since it is supplied to the joining mechanism 5 and manufactured into the spiral tube S, the restoration is attempted to restore the original radius of curvature wound around the drum D around the belt-like member 100 with the reinforcing material at the time of pipe production. Force does not work. Therefore, when the helical member S is manufactured by supplying the strip member 100 with the reinforcing member in a spiral shape, even if the rigidity of the reinforcing member 120 is large, the helical tube S having the target pipe diameter and distance is surely secured. Can be made into pipes.

-Completion of pipe making and removal of pipe making equipment 1-
When the pipe production of the spiral pipe S is completed over the entire length of the construction target area (rehabilitation area) of the existing pipe K, the strip-like member 100 with the reinforcing material at the pipe end of the helical pipe S is cut, and then the pipe production apparatus 1 is Disassemble and remove from the starting manhole M1.

  That is, since the guide frame 6 is formed by connecting a plurality of link bodies 61 to each other, the guide frame 6 can be connected to the link body by disconnecting the connecting portions of the pair of adjacent link bodies 61 and 61. One row of 61 can be used. Further, the joining mechanism 5 and the curl forming device 3 are separated from the support base 2 and removed from the starting side manhole M1.

  In the above-described embodiment, the curl forming apparatus 3 in which the first feed roller 32 and the second feed roller 33 are provided on the upstream side and the downstream side of the curl guide 31, respectively, is illustrated. Either the first feed roller 32 that pushes in toward the curl guide 31 or the second feed roller 33 that pulls the band member 100 with the reinforcing material from the curl guide 31 may be provided.

  Alternatively, the curl guide 31 may be formed to extend to the vicinity of the joining mechanism 5 of the pipe making machine 4 and the second feed roller 33 may be omitted.

  Furthermore, although illustrated as an arcuate spiral plate as the curl guide 31, it is not limited to a spiral plate. For example, although not shown in detail, a plurality of rotating rollers circumscribing an arcuate spiral surface having a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube S can be freely rotated at intervals in the spiral direction. The curb guide 31 is pivotally supported on the shaft, and the belt-like member 100 with the reinforcing material is placed along the plurality of rotating rollers, so that the radius of curvature of the spiral tube S is approximately equal to or less than that of the spiral tube S. An arcuate curl may be formed.

  Furthermore, in the above-described embodiment, the pipe making apparatus 1 in which the curl forming apparatus 3 and the pipe making machine 4 are integrally provided has been described. However, as shown in FIG. Alternatively, the curl forming device 3 may be installed on the ground near the start side manhole M1, and the pipe making device 1 may be configured together with the pipe making machine 4 installed in the start side manhole M1.

  As shown in FIG. 11, the curl forming apparatus 3 includes a spiral curl guide 31 made of a steel plate, a first pinch roller 321 provided on the upstream side of the curl guide 31, and a curl From a second pinch roller 331 provided on the downstream side of the guide 31 and a hydraulic motor (not shown) that rotationally drives either the first pinch roller 321 or the second pinch roller 331 via a gear. Composed.

  Here, the curl guide 31, the first pinch roller 321, and the second pinch roller 331 are the same as those described above, and the same reference numerals are given to the same components, and detailed description thereof is omitted.

  Also in this embodiment, the radius of curvature of the curl guide 31 on the stiffener guide 31 is provided on the stiffener guide 100 with the stiffener by aligning the continuously supplied strip member 100 with the stiffener along the inner peripheral surface of the curly guide 31. It is possible to form an arc-shaped winding rod having a radius of curvature corresponding to the above and plastically deform it in a spiral shape. And when rotating the 1st pinch roller 321 via a hydraulic motor and a gear, the 1st inner surface roller 322 and the 1st outer surface roller 323 which comprise the 1st pinch roller 321 are rotated in the mutually opposite direction, and the 1st inner surface The band member 100 with a reinforcing material can be sandwiched between the roller 322 and the first outer surface roller 323 and can be pushed into the curl guide 31. On the other hand, when the second pinch roller 331 is rotated via a hydraulic motor and a gear, the second inner surface roller 332 and the second outer surface roller 333 constituting the second pinch roller 331 are rotated in opposite directions to each other, The belt-like member 100 with a reinforcing material can be sandwiched between the roller 332 and the second outer surface roller 333 and can be taken out from the curl guide 31.

  As described above, the belt-like member 100 with the reinforcing material, or the first pinch roller 321 and the curl guide 31, which is sent through the curl guide 31 and the second pinch roller 331 after being pushed by the first pinch roller 321, is used. The band member 100 with the reinforcing material taken up by the second pinch roller 331 is continuously formed into an arc-shaped winding rod having a radius of curvature corresponding to the curvature radius of the winding rod guide 31, and is plastically deformed in a spiral shape. It is led to the joining mechanism 5 of the pipe making machine 4 through the starting side manhole M1.

  A band member 100 with a reinforcing material that is plastically deformed in a spiral shape with a radius of curvature corresponding to the radius of curvature of the curl guide 31 is the preceding band member with a spiral reinforcing material in the joining mechanism 5 of the pipe making machine 4. The joining concave portion 115 of the subsequent spiral reinforcing material-like band member 100 is inserted into the joining convex portion 113 of 100 from the outer peripheral side, and the rear end side edge of the substrate 111 in the preceding reinforcing material-like belt member 100 is provided. The stepped portion 114 of the subsequent band member 100 with the reinforcing material is disposed, and the inclined rib 116 of the band member 100 with the subsequent reinforcing material is further provided on the reinforcing rib 112 on the rear end side of the band member 100 with the preceding reinforcing material. Lock. As a result, the adjacent spiral members 100, 100 with the reinforcing material are joined to each other to continuously produce the helical tube S, and are sent out while rotating toward the reaching side manhole M2.

  Therefore, also in this embodiment, the belt-like member 100 with the reinforcing material is an arcuate winding rod having a curvature radius substantially equal to or less than the target curvature radius of the spiral tube S through the winding rod forming device 3. Is continuously formed and plastically deformed in a spiral shape, and then supplied to the joining mechanism 5 and piped into the spiral pipe S. Therefore, it is wound around the drum D around the belt-like member 100 with a reinforcing material at the time of pipe making. The restoring force that tries to restore the original radius of curvature does not work. Thus, when the spiral-shaped tube S is manufactured by supplying the band-shaped member 100 with the reinforcing material in a spiral shape, even if the rigidity of the reinforcing material 120 is large, the spiral tube S having a target tube diameter and distance can be obtained. It is possible to reliably produce pipes.

  In this embodiment, the curl guide 31 is exemplified by the arc-shaped spiral plate. However, since the curl forming device 3 is provided apart from the pipe making machine 4, the curl guide 31 is immediately directed to the joining mechanism 5 of the pipe making machine 4. Thus, there is no need to supply the band-like member 100 with the reinforcing material. Therefore, an arc-shaped cylindrical plate may be used instead of the spiral plate.

  In addition to the arcuate spiral plate or the arcuate cylindrical plate, the curl guide 31 is not shown in detail, but the arcuate shape has a curvature radius substantially equal to or less than the curvature radius of the spiral tube S. A plurality of rotating rollers circumscribing the spiral surface or cylindrical surface may be rotatably supported at intervals in the spiral direction or the circumferential direction to form a curl guide.

  By the way, in embodiment mentioned above, it arrange | positions in the starting side manhole M1, and joins the adjacent strip | belt-shaped members 100 and 100 with a spiral reinforcement material mutually, and the spiral tube S is manufactured, The spiral tube manufactured The pipe making apparatus 1 in which the curl forming apparatus 3 is integrally provided in the front stage of the pipe making machine 4 that sends out S while rotating toward the reaching side manhole M2 or the curl forming apparatus 3 in the front stage of the pipe making machine 4 Although the pipe-making apparatus 1 provided separately was demonstrated, the adjacent spiral member 100,100 with a reinforcing material is joined, the spiral pipe S is pipe-formed, and the pipe-formed spiral pipe S is left behind. It may be a pipe making apparatus in which the curl forming apparatus 3 is provided in a pipe making machine for supplying a new reinforcing material wearing band-like member 100 to the front and making a pipe while adding the spiral pipe S.

  Hereinafter, other embodiments of the pipe making apparatus 1 of the present invention will be described with reference to FIGS. 12 and 13.

  The pipe making apparatus 1 of this embodiment is configured by integrally providing a curl forming apparatus 3 on a pipe making machine 7.

  In addition, the curl forming apparatus 3 is the same as that of embodiment mentioned above, attaches | subjects the same code | symbol to the same member, abbreviate | omits detailed description, and demonstrates only the pipe making machine 7. FIG.

  The pipe making machine 7 includes a forming frame 8 in which a band member 100 with a reinforcing material is spirally supplied to manufacture a spiral tube S, and an adjacent band 100 with a reinforcing material attached to the forming frame 8. , 100 are joined to each other, and a curl forming device 3 is attached to a gear box 94 of the joining mechanism 9 described later via a support frame 21.

  The molding frame 8 has the same structure as the guide frame 6 described above. That is, as shown in FIG. 14, the molded frame 8 includes a plurality of link bodies 81 in which a pair of link members 82 and 83 are rotatably connected via a connecting shaft 84, and connecting shafts of the link bodies 81. And a plurality of link bodies 81 provided with these guide rollers 85 are connected to each other to form a substantially annular shape.

  Here, as shown in FIG. 14, the link members 82 and 83 constituting each link body 81 include front plates 82a and 83a, rear plates 82b and 83b, front plates 82a and 83a, and rear plates 82b, It is formed in a U-shape from connecting plates 82c and 83c installed between opposing ends of 83b. Then, the other opposite ends of the front plate 83a and the rear plate 83b of the link member 83 are overlapped with the other opposite ends of the front plate 82a and the rear plate 82b of the link member 82, and these are rotated via the connecting shaft 84. A link body 81 is formed so as to be freely movable.

  The adjacent link bodies 81 and 81 are appropriately combined with the connection plates 82c and 83c of the link members 82 and 83 constituting the link body 81 and the connection plates 82c and 83c of the link members 82 and 83 constituting the link body 81. And are detachably connected via bolts and nuts (not shown).

  However, if a specific pair of adjacent link bodies 81, 81 can be attached and detached so that the molding frame 8 can be formed linearly, the remaining connecting plates 82c, 83c are fixed so as not to be attached / detached by welding or the like. It doesn't matter.

  Further, a rotation restricting piece 87 is provided at each of the other end portions of the front side plate 83a and the rear side plate 83b of the link member 83, while each other end portion of the front side plate 82a and the rear side plate 82b of the link member 82 is provided. The notch 86 corresponding to the rotation restricting piece 87 described above is formed over a certain range on a set radius around the rotation center of the connecting shaft 84, and the rotation range of the link member 83 with respect to the link member 82. Is restricted by a rotation restricting piece 87 that contacts the notch 86. This restricts the link body 81 from bending inward.

  The guide roller 85 is rotatably provided on the connecting shaft 84 of each link body 81. Here, the guide roller 85 is made of synthetic resin or metal, and is rotatably supported around the connecting shaft 84 via a bearing 88. The guide roller 85 is a flat inner surface of the band member 100 with a reinforcing material, that is, the inner surface of the spiral tube S. Contact the peripheral surface.

  Furthermore, the guide roller 85 rotates in contact with the inner peripheral surface of the spiral pipe S manufactured from the adjacent band members 100 and 100 with reinforcing material joined together by the joining mechanism 9 in the existing pipe K. On the other hand, in order to advance the pipe making machine 7, the pipe making machine 7 is disposed so as to be perpendicular to the band-like member 100 with the reinforcing material constituting the spiral pipe S.

  Of the link bodies 81, the link body 81 to which the joining mechanism 9 is attached is provided with a tube-making roller 92 to be described later instead of the guide roller 85, and the link body 81 behind the joining mechanism 9. In order not to interfere with the supply of the band member 100 with the reinforcing material, the width of the band member 100 with the reinforcing material is displaced from the link body 81 to which the joining mechanism 9 is attached in the direction opposite to the spiral tube forming direction. (See FIG. 15).

  As shown in FIG. 16, the joining mechanism 9 includes a pinch roller 91 in which a tube-making roller 92 and a drive roller 93 are combined, and a gear of a gear box 94 fixed to a link member 82 of a link body 81 in the molding frame 8. 941, 942, 943, and a hydraulic motor 95 that rotates the pinch roller 91. The axis of rotation of the tube-making roller 92 and the axis of rotation of the drive roller 93 are orthogonal to the lead angle of the spiral tube S. Are arranged so as to be supported by the gear box 94 together with the output shaft of the hydraulic motor 95. Then, when the hydraulic motor 95 is driven to rotate, the tube-forming roller 92 is fixed to the output shaft, the rotating shaft of the tube-forming roller 92, and the rotating shaft of the driving roller 93, and the gears 941, 942, and 943 mesh with each other. The rotation direction is set so that the drive roller 93 is rotated in the opposite direction, and the belt-like member 100 with the reinforcing material is sandwiched between the tube-making roller 92 and the drive roller 93 and sent out.

  Here, the tube-making roller 92 has a length that is approximately twice the width of the band member 100 with the reinforcing material, is formed in a cylindrical shape with iron or the like, and precedes the band member 100 with the spiral reinforcing material. And the subsequent spiral-shaped reinforcing member-like band member 100 are joined so that the outer peripheral surface comes into contact with the smooth inner peripheral surface of the spiral tube S by the adjacent reinforcing member-like band members 100, 100 and rotates. The outer diameter is set.

  In addition, the driving roller 93 includes a reinforcing member with a reinforcing material strip 100 and a succeeding spiral member with a reinforcing material strip 100 joined to each other, and the driving roller 93 is adjacent to each other. A plurality of strips having a width that can be inserted between adjacent reinforcing ribs 112 and 112 of the band member 100 with reinforcing material are provided so as to be disposed between the reinforcing ribs 112 and 112 of the band member 100 with reinforcing material. The outer diameter is set so as to have a distance corresponding to the thickness of the substrate 111 of the band-shaped member 110 in the band-shaped member 100 with the reinforcing material between the outer peripheral surface and the outer peripheral surface of the tube-making roller 92. Therefore, the outer peripheral surface of the drive roller 93 is the same as the outer peripheral surface of the spiral tube S formed by the adjacent band members 100, 100 with the reinforcing members joined to each other between the adjacent reinforcing ribs 112, 112 of the band members 100 with the reinforcing materials. It rotates in contact with the back surface of the belt-like member 100 with the reinforcing material on the side.

  Further, the outer peripheral surface of the drive roller 93 is knurled, and revolves without sliding with respect to the adjacent belt-like members 100 and 100 with the reinforcing material.

  A spacer roller 96 having a slightly larger diameter than the outer diameter of the drive roller 93 is rotatably supported on the rotation shaft of the drive roller 93 supported on the gear box 94 of the joining mechanism 9. By rotating the outer peripheral surface of the roller 96 in contact with the inner peripheral surface of the existing pipe K, the roller 96 moves around the inner peripheral surface of the existing pipe K by the reaction. That is, when the joining mechanism 9 is driven, the pipe making device 1 revolves around the axis of the spiral tube S.

  The hydraulic motor 95 is driven by pressure oil supplied from the hydraulic unit P through a pressure oil hose, and the hydraulic unit P is driven by electric power supplied from the generator G (see FIG. 17). In this case, the pressure oil hose extending from the hydraulic unit P is connected to the hydraulic motor 95 via the rotary joint, and can supply the pressure oil without affecting the circular movement (revolution) of the pipe making apparatus 1.

  Next, a description will be given of pipe making of the helical pipe S that regenerates the existing pipe K from the upstream start side manhole M1 to the downstream side arrival side manhole M2 using the pipe making apparatus 1 configured as described above.

  First, as preparation before construction, the spiral tube S is manufactured by the drum D (with a turntable) on which the belt-like member 100 with the reinforcing material shown in FIG. 1 is wound, the pipe manufacturing apparatus 1, the hydraulic unit P, the power generation A machine G and the like are prepared, and the drum D is installed on the ground on the start side manhole M1, while the generator G is installed on the ground on the arrival side manhole M2. Moreover, the pipe making apparatus 1 and the hydraulic unit P are carried in and installed in the upstream end in the existing pipe K to be rehabilitated through the start side manhole M1. At that time, the pipe making apparatus 1 is disassembled into the curl forming apparatus 3 and the pipe making machine 7, and further, the pipe making machine 7 is disassembled into the forming frame 8 and the joining mechanism 9 and carried in, and then assembled. Next, the pressure oil hose from the hydraulic unit P is connected to the hydraulic motors 325 and 335 of the curl forming apparatus 3 and the hydraulic motor 95 of the joining mechanism 9 in the pipe making machine 7 through a rotary joint.

  In addition, about the shaping | molding flame | frame 8, the connection part of a pair of adjacent link bodies 81 and 81 is disconnected, a some link body 81 is carried in in 1 row, a pair of adjacent link bodies 81, 81 connecting portions are connected to form a substantially annular shape.

  In addition, with respect to the pipe making apparatus 1, a curling guide having a corresponding radius of curvature (in this embodiment, a radius of curvature smaller than the diameter of the spiral pipe S) according to the pipe diameter of the spiral pipe S to be piped. 31 is prepared, and the circumference of the molding frame 8 (the number of link bodies 81) is adjusted.

  Furthermore, the pipe making apparatus 1 is adjusted so as to have a spiral pitch corresponding to the inner diameter of the existing pipe K to be rehabilitated and the width of the band member 100 with the reinforcing material to be used.

  When such preparatory work is completed, the belt-like member 100 with the reinforcing material is pulled out from the inner peripheral side of the drum D placed on the ground, and drawn into the existing pipe K through the starting side manhole M1, and the leading end is formed as a curl. After passing through the pinch roller 321 of the first feed roller 32 in the apparatus 3, an arcuate curl having a curvature radius corresponding to the curvature radius is formed along the inner peripheral surface of the curl guide 31. Next, after the leading end portion of the belt-like member 100 with the reinforcing material is inserted into the pinch roller 331 of the second feed roller 33, it is inserted into the pinch roller 91 of the joining mechanism 9 in the pipe making machine 7, and the guide roller 85 of the molding frame 8 is inserted. Send it out. In this way, the band-like member 100 with the reinforcing material is sequentially fed into the curl forming device 3 to continuously form an arc-shaped curl with a curvature radius corresponding to the curvature radius of the curl guide 31 and plastically deform in a spiral shape. Then, the sheet is fed out of the guide roller 85 of the molding frame 8 through the joining mechanism 9.

  Next, the pipe making apparatus 1 is rotated in a state where the band member 100 with the reinforcing material fed to the outside of the guide roller 85 of the forming frame 8 is sandwiched between the inner peripheral surface of the existing pipe K, and the band member with the reinforcing material. 100 is wound around the forming frame 8 of the pipe making machine 7 several times (1 to 3 times) to produce the starting spiral pipe S ′. At this time, the tube-forming device 1, that is, the joining mechanism 9 moves around, so that the joining of the following spiral reinforcing material-equipped belt-like member 100 to the joining concave portion 115 of the preceding spiral reinforcing material-like belt-like member 100 is performed. The convex portion 113 is inserted from the inner peripheral side, and the stepped portion 114 of the preceding spiral reinforcing material-equipped strip member 100 is provided with the joining convex portion 113 of the subsequent spiral reinforcing material strip member 100. The side edge portion of the substrate 111 is arranged, and the inclined rib 116 of the preceding spiral reinforcing material-like band member 100 is provided with the joining convex portion 113 of the subsequent spiral reinforcing material-like band member 100. The reinforcing ribs 112 are locked, and the adjacent strip members 100 and 100 with spiral reinforcing material are joined to each other.

  After the start spiral pipe S ′ is completed, the joining mechanism 9 of the pipe making machine 7 constituting the pipe making apparatus 1 is driven, and the first feed roller 32 and the second feed roller of the curl forming apparatus 3 are driven. 33 is driven. As a result, the hydraulic motor 95 of the joining mechanism 9 is driven to rotate and the pinch roller 91 is rotated. A reciprocating movement (revolution) is performed along the member 100 in the direction opposite to the feeding direction. At this time, the belt-like member 100 with the reinforcing material guided by the guide roller 85 of the forming frame 8 that moves around by the rotation of the pinch roller 91 and relatively fed so as to be adjacent to the starting spiral tube S ′ is An arc-shaped winding rod having a curvature radius corresponding to the curvature radius of the guide 31 is formed and plastically deformed in a spiral shape, and the joining projection 113 is joined to the band-like member 100 with the reinforcing material of the starting spiral tube S ′. The recessed portion 115 is fitted from the inner peripheral side, and the rear end side edge of the succeeding band member 100 with reinforcing material is disposed at the stepped portion 114 of the band member 100 with reinforcing material of the starting spiral tube S ′. , The reinforcing rib 112 on the rear end side of the succeeding band member 100 with the reinforcing material is engaged with the inclined rib 116 of the band member 100 with the reinforcing material of the starting spiral tube S ′ and adjacent to the inclined rib 116 with the reinforcing material. To pipe producing a spiral tube S bonded to each other to 00,100.

  In this manner, the pinch roller 91 of the joining mechanism 9 moves around while joining the spiral-shaped reinforcing member-equipped strip-shaped member 100 following the preceding spiral-shaped reinforcing member-shaped strip-shaped member 100 to produce the spiral tube S. Therefore, after all, the pipe making apparatus 1 including the pipe making machine 7 and the curl forming apparatus 3 pipes the band member 100 with the reinforcing material into the spiral pipe S and moves (revolves) in the circumferential direction at that time. At the same time, it advances in the tube axis direction toward the reaching side manhole M2.

  The first feed roller 32 and the second feed roller 33 of the curl forming apparatus 3 that moves around with the pipe making machine 7 in parallel with the pipe making work by the pipe making machine 7 are driven, so that the first feed The first hydraulic motor 325 of the roller 32 is rotationally driven to rotate the first pinch roller 321, and the belt-like member 100 with the reinforcing material is sandwiched between the first inner surface roller 322 and the first outer surface roller 323, pulled out from the drum D, and wound.向 け Push toward the guide 31. For this reason, the belt-shaped member 100 with the reinforcing material moves along the curl guide 31 and an arc-shaped curl with a radius of curvature corresponding to the curvature radius of the curl guide 31 is formed. Further, the second hydraulic motor 335 of the second feed roller 33 is driven to rotate and the second pinch roller 331 is rotated, and the belt-like member 100 with the reinforcing material is sandwiched between the second inner surface roller 332 and the second outer surface roller 333 and wound. It is taken out from the guide 31 and sent out toward the joining mechanism 9 of the pipe making machine 7. For this reason, the band-like member 100 with the reinforcing material is supplied to the joining mechanism 9 of the pipe making machine 7 after the curl is continuously formed and plastically deformed in a spiral shape.

  The rotational drive of the pinch roller 91 of the joining mechanism 9 in these pipe making machines 7, the rotational drive of the first pinch roller 321 of the first feed roller 32 in the curl forming apparatus 3, and the second pinch roller 331 of the second feed roller 33. The rotational drive of is controlled to be driven synchronously.

  As described above, the belt-like member 100 with the reinforcing material is fed out by the first pinch roller 321 of the first feed roller 32 in the curl forming apparatus 3 and passes through the curl guide 31 and the second pinch roller of the second feed roller 33. An arcuate winding rod having a radius of curvature corresponding to the curvature radius of the winding rod guide 31 is continuously formed and plastically deformed in a helical shape after being taken up by the winding rod guide 31, and is supplied to the pipe making machine 7, and its joining mechanism Adjacent band members 100 and 100 with reinforcing members are joined to each other by the nine pinch rollers 91, and the spiral tube S is manufactured, and the manufactured spiral tube S is left, and a new spiral tube is formed in front of it. The band member 100 with the reinforcing material is supplied, and the spiral tube S is additionally piped in order toward the arrival side manhole M2.

  As a result, the belt-like member 100 with the reinforcing material is formed into a spiral shape by continuously forming the arcuate curl having a smaller radius of curvature than the target radius of curvature of the spiral tube S through the curl forming device 3. After being deformed, since it is supplied to the joining mechanism 9 and manufactured into the spiral tube S, the original curvature radius wound around the drum D is wound around the drum D with the reinforcing member at the time of the pipe production. The restoring force to restore does not work. Therefore, when the helical member S is manufactured by supplying the strip member 100 with the reinforcing member in a spiral shape, even if the rigidity of the reinforcing member 120 is large, the helical tube S having the target pipe diameter and distance is surely secured. Can be made into pipes.

  When the pipe production of the spiral pipe S is completed over the entire length of the construction target area (rehabilitation area) of the existing pipe K, the strip-like member 100 with the reinforcing material at the pipe end of the helical pipe S is cut, and then the pipe production apparatus 1 is Disassemble and remove the pipe making apparatus 1 and the hydraulic unit P.

  That is, since the molding frame 8 is formed by connecting a plurality of link bodies 81 to each other, the molding frame 8 is linked to the link body by removing the connection of the connecting portions of the pair of adjacent link bodies 81 and 81. One row of 81 can be used. Further, the curl forming apparatus 3 is separated from the pipe making machine 7 and removed.

  In the other embodiments described above, the curl forming device 3 in which the first feed roller 32 and the second feed roller 33 are respectively provided on the upstream side and the downstream side of the curl guide 31 is illustrated as an example. Either the first feed roller 32 that pushes the belt-shaped member 100 toward the curl guide 31 or the second feed roller 33 that pulls the belt-shaped member 100 with the reinforcing material from the curl guide 31 may be provided.

  Alternatively, the curl guide 31 may be formed to extend to the vicinity of the joining mechanism 9 of the pipe making machine 7 and the second feed roller 33 may be omitted.

  Furthermore, although illustrated as an arcuate spiral plate as the curl guide 31, it is not limited to a spiral plate. For example, although not shown in detail, a plurality of rotating rollers circumscribing an arcuate spiral surface having a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube S can be freely rotated at intervals in the spiral direction. A curling guide is formed on the shaft, and a band member 100 with a reinforcing member is placed along a plurality of rotating rollers, so that a circle having a radius of curvature substantially equal to or less than the radius of curvature of the spiral tube S is obtained. An arc-shaped curl may be formed.

  Furthermore, in the above-described embodiment, the pipe making apparatus 1 in which the curl forming apparatus 3 and the pipe making machine 7 are integrally provided has been described. However, as shown in FIG. Alternatively, the curl forming device 3 may be installed on the ground near the start side manhole M1, and the pipe making device 1 may be configured together with the pipe making machine 7 installed in the existing pipe K.

  As shown in FIGS. 19 and 20, the curl forming apparatus 3 includes a support frame 34, a ring-shaped rotary frame 36 that is rotatably supported by the support frame 34 via a plurality of support rollers 35, A first feed roller 32 and a second feed roller 33 provided on the rotating frame 36 via a mounting bracket 37; a curl guide 31 disposed over the first feed roller 32 and the second feed roller 33; A drive roller 38 and a drive motor 39 are fixed to the support frame 34 and rotationally drive the rotary frame 36.

  In such a curl forming apparatus 3, when the drive motor 39 is driven to rotate, the drive roller 38 is driven to rotate, and the rotating frame 36 is supported by the support roller 35 and rotates in the direction opposite to the rotation direction of the drive roller 38. To do. As a result, the curl guide 31, the first feed roller 32, and the second feed roller 33 provided on the rotary frame 36 via the mounting bracket 37 also rotate in the same direction. In this case, by rotating the rotary frame 36 in the direction opposite to the supply direction of the band member 100 with the reinforcing material and at the same speed as the supply speed, the band member 100 with the reinforcing material is sent out from the curl forming apparatus 3. At this time, there is no relative excess or deficiency in feeding the strip-shaped member 100 with the spiral reinforcing material to the spiral tube S that is left and piped by the revolving pipe-making machine 7, and the strip-shaped member 100 with the reinforcing material is twisted. It can be prevented from occurring.

  That is, when the spiral pipe S is produced by the pipe making machine 7, the rotation frame 36 does not rotate or the rotation is too slow, so that the spiral pipe S is spirally formed with respect to the helical pipe S that is left to be produced. The band member 100 with the reinforcing material is sent out excessively, the twisted band member 100 with the reinforcing material is twisted and the curl is turned upside down. The feeding of the belt-like member 100 with the spiral reinforcing material to the spiral tube S is reduced, the winding diameter of the belt-like member 100 with the spiral reinforcing material is gradually reduced, and the belt-like member 100 with the reinforcing material is deformed. Can be prevented.

  Here, since the supply direction (spiral direction) of the band member 100 with the reinforcing material differs depending on the rotation direction accompanying the arrangement of the drum D, the band member 100 with the reinforcing material drawn out from the drum D is guided to one feed roller. Therefore, the feed roller on the entrance side from which the belt-like member 100 with the reinforcing material is guided becomes the first feed roller. In other words, in the embodiment, the belt-like member 100 with the reinforcing material is guided to the feed roller on the right side of FIGS. Although not shown, when the belt-like member 100 with the reinforcing material is guided to the feed roller on the left side of FIGS. 19 and 20 and becomes the feed roller on the inlet side, this feed roller becomes the first feed roller 32.

  On the other hand, the curl guide 31, the first feed roller 32, and the second feed roller 33 of the curl forming device 3 are the same as those in the above-described embodiment, and the band member 100 with the reinforcing material is passed through the first feed roller 32. It is pushed into the curl guide 31 or is taken up from the curl guide 31 via the second feed roller 33 and wound on the stiff band 100 with the reinforcing material moving along the curl guide 31. An arcuate winding rod having a radius of curvature smaller than the radius of curvature of the rod guide 31, that is, the radius of curvature of the spiral tube S can be continuously formed and plastically deformed in a spiral shape.

  In the curl forming apparatus 3 as described above, if one is constituted by a feed roller, that is, a pinch roller and a hydraulic motor that drives the pinch roller, the other can be handled by a pinch roller as described above. . That is, when the first pinch roller 321 is rotationally driven via a hydraulic motor and a gear, the band member 100 with the reinforcing material is sandwiched between the first pinch roller 321 and pushed into the curling guide 31, and the second pinch roller 331 is used. Is rotated through a hydraulic motor and gears, the belt-like member 100 with a reinforcing material is sandwiched between the second pinch rollers 331 and taken up from the curl guide 31. Thereby, after being pushed into the curl guide 31, the belt-shaped member 100 with the reinforcing material passed through the curl forming device 3 through the second pinch roller 331, or the first pinch roller 321 and the curl guide 31 are wound. The belt-shaped member 100 with the reinforcing material taken out from the scissors guide 31 is formed by continuously forming the arcuate curl with a radius of curvature smaller than the curvature radius of the spiral guide S, that is, the curvature radius of the spiral tube S. It is plastically deformed in a spiral shape and supplied to the joining mechanism 9 of the pipe making machine 7.

  Then, in the joining mechanism 9 of the pipe making machine 7, the joining convex portion 113 of the subsequent spiral reinforcing material-like band member 100 is inserted into the joining concave portion 115 of the preceding spiral reinforcing material-like band member 100 from the inner peripheral side. The rear end side edge of the subsequent spiral reinforcing band member 100 is disposed in the stepped portion 114 of the preceding spiral reinforcing band member 100, and the leading spiral side is further disposed. The adjacent reinforcing ribs 112 on the rear end side of the spiral-shaped reinforcing member-equipped belt-like member 100 are engaged with the inclined ribs 116 of the reinforcing-material-like belt-like member 100, thereby adjoining the spiral-shaped reinforcing member-like belt-like member 100. 100 and 100 can be joined to each other, and the helical tube S can be continuously manufactured.

  Therefore, also in this embodiment, the belt-like member 100 with the reinforcing material is an arcuate winding rod having a curvature radius substantially equal to or less than the target curvature radius of the spiral tube S through the winding rod forming device 3. Is continuously formed and plastically deformed in a spiral shape, and then supplied to the joining mechanism 9 to be piped, the original curvature wound around the drum D on the belt-like member 100 with the reinforcing material at the time of pipe making. The restoring force that tries to restore the radius does not work. Thus, when the spiral-shaped tube S is manufactured by supplying the band-shaped member 100 with the reinforcing material in a spiral shape, even if the rigidity of the reinforcing material 120 is large, the spiral tube S having a target tube diameter and distance can be obtained. It is possible to reliably produce pipes.

  In addition, the band-like member 100 with the reinforcing material is formed in a spiral shape with a curl smaller than the radius of curvature when wound around the drum D on the ground in the vicinity of the manhole M1 away from the pipe making machine 7. Therefore, even if the diameter of the start side manhole M1 is small, it can be easily drawn into the manhole M1 and supplied to the pipe making machine 7. Furthermore, it is possible to cope with a case where the existing pipe K has a small diameter and the curl forming apparatus 3 cannot be integrated into the pipe making machine 7.

  Moreover, the curl forming apparatus 3 can be installed in the manhole M1 depending on the case other than the ground near the manhole. When installing the curl forming apparatus 3 in the manhole M1, even if the diameter of the existing pipe K is small, the spiral pipe drawn into the existing pipe K or made into the existing pipe K It can be easily drawn into S and supplied to the pipe making machine 7.

  Further, in this embodiment, the curl guide 31 is illustrated as an arc-shaped spiral plate, but since the curl forming device 3 is provided apart from the pipe making machine 7, the joining mechanism 9 of the pipe making machine 7 is immediately provided. There is no need to supply the band-like member 100 with the reinforcing material toward the side. Therefore, an arc-shaped cylindrical plate may be used instead of the spiral plate.

  In addition to the arcuate spiral plate or the arcuate cylindrical plate, the curl guide 31 is not shown in detail, but the arcuate shape has a curvature radius substantially equal to or less than the curvature radius of the spiral tube. A plurality of rotating rollers circumscribing the spiral surface or the cylindrical surface may be rotatably supported at intervals in the spiral direction or the circumferential direction to form a curl guide.

  Further, as the joining mechanism 9 in the pipe making machine 7, the driving roller 93 is not provided, the pipe making roller 92, and a pressing roller (not shown) that is provided on the forming frame 8 and feeds the band member 100 with the reinforcing material. May be provided.

  In the embodiment described above, a hydraulic motor is employed as a drive source for the first feed roller 32 and the second feed roller 33 in the curl forming apparatus 3 and a drive source for the joining mechanism 5 in the pipe making machines 4 and 7. However, an electric motor, a hydraulic motor, etc. may be sufficient and it does not specifically limit.

  By the way, in embodiment mentioned above, although the case where the spiral tube S was manufactured with the strip | belt-shaped member 100 with a reinforcing material shown in FIG. 1 was demonstrated, it is not limited to such a strip | belt-shaped member 100 with a reinforcing material. .

  For example, the band members 100A, 100B, 100C, and 100D with the reinforcing material shown in FIGS. 21 to 26 may be employed.

  Hereinafter, modified examples of the band-shaped member with the reinforcing material will be described.

  The band member 100A with a reinforcing material shown in FIGS. 21 and 22 is also composed of a band member 130 and a reinforcing material 120 attached to the band member 130.

  The belt-shaped member 130 is formed by extruding a flexible synthetic resin, for example, hard vinyl chloride, polyethylene, polypropylene, and the like, and a plurality of T-shaped reinforcements are provided on the back surface of the belt-like substrate 131. A rib 132 is provided with the tip positioned parallel to the substrate 131. On both side edges of the substrate 131, joint convex portions 133 and joint concave grooves 134 are continuously formed along the longitudinal direction.

  The reinforcing member 120 is formed of a strip-shaped steel plate that is continuous in the longitudinal direction and has a substantially W-shaped cross section, and is mounted across the plurality of reinforcing ribs 132 of the band-shaped member 130.

  As shown in FIGS. 22 (a) and 22 (b), such a band member 100A with a reinforcing material is formed by joining one of the band members 100A and 100A with reinforcing material adjacent to each other. The band-like members 100A and 100A with reinforcing material that are adjacent to each other can be connected by fitting the part 133 and the joining concave part 134 of the other belt-like member with reinforcing material 100A from inside or outside.

  A band member 100B with a reinforcing material shown in FIG. 23 includes a band member 140 and a reinforcing material 120 attached to the band member 140. Adjacent band members 100B and 100B with a reinforcing material are connected via a connector 150. Be joined.

  The belt-like member 140 is formed by extruding a flexible synthetic resin, for example, hard vinyl chloride, polyethylene, polypropylene, and the like, and a plurality of T-shaped reinforcements are provided on the back surface of the belt-like substrate 141. A rib 142 is provided with the tip positioned parallel to the substrate 141. Bonding grooves 143 are continuously formed along the longitudinal direction on both side edges of the substrate 141.

  On the other hand, the connector 150 is formed with a pair of joint convex portions 151 that can be joined to the joint concave portions 143 and 143 at both side edges where the adjacent band-shaped members 140 and 140 are abutted with each other along the longitudinal direction.

  The reinforcing member 120 is formed by a strip-shaped steel plate continuous in the longitudinal direction having a substantially W-shaped cross section, and is mounted across the plurality of reinforcing ribs 142 of the band-shaped member 140.

  Such a band member 100B with a reinforcing member is joined to the trailing edge side of the preceding band member 100B with a reinforcing member in a state where the front edge and the rear edge of the band members 100B, 100B adjacent to each other are abutted with each other. By attaching the connector 150 from the inner peripheral side of the band-like member 100B with the reinforcing material and joining them over the concave part 143 and the leading edge side bonding concave part 143 of the band-like member 100B with the reinforcing material that follows, with the reinforcing material adjacent to each other The strip members 100B and 100B can be connected.

  Further, a band member 100C with a reinforcing material shown in FIG. 24 is integrally formed by embedding reinforcing materials 171 and 172 in a band member 160. That is, the band-shaped member 160 has a plurality of I-shaped reinforcing ribs 162 standing on the back surface of the band-plate-shaped substrate 161, and the bonding convex portion 163 on the back surface of one side edge of the substrate 161. Is formed on the other side edge portion of the substrate 161 with a bonding recess 164 into which the bonding protrusion 163 can be fitted. The reinforcing member 171 is insert-molded on the substrate 161 of the band-shaped member 160, and the reinforcing member 172 such as a steel plate is insert-molded on the reinforcing rib 162 to form the band-shaped member 100C with the reinforcing material.

  The reinforcing material 172 is formed so as to be able to absorb the difference in circumferential length between the outer peripheral side and the inner peripheral side when plastically deformed spirally.

  Also in such a band member 100C with a reinforcing material, as shown in FIG. 25, the joining convex part 163 of one of the belt-shaped members 100C with a reinforcing material and the belt-shaped member 100C with a reinforcing material adjacent to each other, By fitting the joint recess 164 of the other band member 100C with the reinforcing material from the inside or the outside, the adjacent band members 100C, 100C with the reinforcing material are joined to each other to form the spiral tube S having a predetermined pipe diameter. Can be piped.

  Furthermore, FIG. 26 shows a band member 100D with a reinforcing material that is integrally formed by embedding reinforcing materials 171 and 172 in the band-shaped member 180. The band-shaped member 180 of the band-shaped member with reinforcement 100D has a plurality of I-shaped reinforcing ribs 182 standing on the back surface of the band-shaped substrate 181, and one side edge of the substrate 181 The other side edge of the substrate 181 is formed in a stepped portion 183 that is stepped down to the back side by the thickness of the substrate 181. The reinforcing member 171 is insert-molded on the substrate 181 of the band-shaped member 180, and the reinforcing member 172 such as a steel plate is insert-molded on the reinforcing rib 182 to form the band-shaped member 100D with the reinforcing material.

  In such a band member 100D with a reinforcing material, the stepped portion 183 of one of the band members 100D with a reinforcing material and the other band shape with the reinforcing material among the adjacent belt-shaped members 100D and 100D with a reinforcing material. Although overlapped with the other end edge of the member 100D and not shown in detail, the adjacent belt members 100D and 100D with the reinforcing material are joined to each other by heat fusion so as to have a predetermined pipe diameter. The spiral tube S can be manufactured.

  Furthermore, although the embodiment has been described in which the arcuate curl is continuously formed on the belt-shaped member with the reinforcing material and is plastically deformed in a spiral shape, the arc-shaped curl is continuously formed on the belt-shaped member without the reinforcing material. It is also possible to form a spiral tube by forming it into a spiral shape. Specifically, prior to forming the spiral tube with the band-shaped member, the band-shaped member is heated to continuously form the curl in an arc shape and then formed into a spiral shape, and then joined to the pipe making machine. What is necessary is just to supply to a mechanism.

It is sectional drawing which shows an example of the strip | belt-shaped member with a reinforcing material used for the pipe manufacturing apparatus of this invention. It is sectional drawing explaining the joining process of the strip | belt-shaped member with a reinforcing material of FIG. It is a side view which shows one Embodiment of the pipe making apparatus of the helical tube of this invention. It is a front view of the pipe making apparatus of FIG. It is a top view which shows the 1st feed roller of the curl forming apparatus which comprises the pipe making apparatus of FIG. It is a side view which shows the joining mechanism which comprises the pipe making apparatus of FIG. It is the front view and top view explaining the link body of the guide frame which comprises the pipe making apparatus of FIG. It is process drawing explaining the pipe making method by the pipe making apparatus of FIG. It is the front and side explanatory drawing which show typically the pipe making process by the pipe making apparatus of FIG. It is process drawing which shows the pipe manufacturing method by the modification of the pipe manufacturing apparatus of FIG. 3 corresponding to FIG. It is explanatory drawing which shows typically the curl formation process of the curl formation apparatus in the pipe making apparatus of FIG. It is a perspective view which shows other embodiment of the pipe manufacturing apparatus of the helical tube of this invention. It is a front view of the pipe making apparatus of FIG. It is the front view and top view explaining the link body of the molding frame which comprises the pipe making apparatus of FIG. It is a top view explaining the link body of the shaping | molding frame to which the joining mechanism which comprises the pipe making apparatus of FIG. 12 was attached. It is a side view which shows the joining mechanism which comprises the pipe making apparatus of FIG. It is process drawing explaining the pipe manufacturing method by the pipe manufacturing apparatus of FIG. It is process drawing which shows the pipe manufacturing method by the modification of the pipe manufacturing apparatus of FIG. 12 corresponding to FIG. It is a front view which shows the curl forming apparatus which comprises the pipe making apparatus of FIG. It is a side view of the curl forming apparatus of FIG. It is sectional drawing which shows the modification of a strip | belt-shaped member with a reinforcing material. It is sectional drawing explaining the joining process of the strip | belt-shaped member with a reinforcing material of FIG. It is sectional drawing which shows the other modification of the strip | belt-shaped member with a reinforcing material, and an exploded perspective view which abbreviate | omits and shows a joining state partially. It is sectional drawing which shows another modification of the strip | belt-shaped member with a reinforcing material. It is sectional drawing explaining the joining process of the strip | belt-shaped member with a reinforcing material of FIG. It is sectional drawing explaining the joining process of the other another modification of a strip | belt-shaped member with a reinforcing material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe making apparatus 3 Winding hook forming apparatus 31 Rolling hook guide 32,33 Feed roller 36 Rotating frame 4,7 Pipe making machine 5,9 Joining mechanism 51,91 Pinch roller 6 Guide frame 65 Guide roller 8 Molding frame 85 Guide roller 100 , 100A, 100B, 100C Strip member with reinforcement

Claims (13)

  Prior to forming a spiral tube by supplying a band member with a reinforcing material to which a bonding part is formed on both side edges, and a reinforcing material continuous in the longitudinal direction is attached, and joining the adjacent bonding parts to each other A curl forming apparatus for forming a curl on a belt-like member with a reinforcing material, the curl guide having a curvature radius substantially equal to or less than the curvature radius of the spiral tube, and an upstream side of the curl guide A feed roller that is disposed and pushes the band member with reinforcing material into the curl guide, or at least one feed roller that is disposed downstream of the curl guide and pulls the band member with reinforcing material from the curl guide, Push the band member with reinforcement into the curl guide, or take the band member with reinforcement from the curl guide and approximately equal to the radius of curvature of the spiral tube in the band with reinforcement, or An arcuate curl of equal or less of the radius of curvature continuously formed, curl forming apparatus of the reinforcing material-strip member characterized by plastically deforming the strip with reinforcement helically.   Prior to forming a spiral tube by supplying a band member with a reinforcing material to which a bonding part is formed on both side edges, and a reinforcing material continuous in the longitudinal direction is attached, and joining the adjacent bonding parts to each other A curl forming apparatus for forming a curl on a belt-like member with a reinforcing material, the curl guide having a curvature radius substantially equal to or less than the curvature radius of the spiral tube, and an upstream side of the curl guide A belt with a reinforcing material, comprising a first pinch roller arranged, a second pinch roller arranged downstream of the curl guide, and a motor that rotationally drives at least one of the first pinch roller or the second pinch roller Push the member into the curl guide, or pull the reinforcing band member from the curl guide, and the arc with a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube Curl continuously form, wrinkle formation apparatus of the reinforcing material-strip member characterized by plastically deforming the strip with reinforcement spiral.   Prior to forming a spiral tube by supplying a band member with a reinforcing material to which a bonding part is formed on both side edges, and a reinforcing material continuous in the longitudinal direction is attached, and joining the adjacent bonding parts to each other A curl forming apparatus for forming a curl on a belt-like member with a reinforcing material, provided on a rotating frame supported by a supporting frame via a guide roller, a motor for rotating the rotating frame, and the rotating frame. A winding rod guide having a curvature radius substantially equal to or less than the curvature radius of the spiral tube, a first pinch roller disposed on the upstream side of the winding rod guide, and disposed on the downstream side of the winding rod guide. The second pinch roller and a motor that rotationally drives at least one of the first pinch roller or the second pinch roller, and the rotating frame is in a direction opposite to the supply direction of the band member with the reinforcing material Push the band member with reinforcing material into the curl guide while rotating, or pull the band member with reinforcing material from the curl guide, and the band member with reinforcing material is approximately the same as or equal to the radius of curvature of the spiral tube. An apparatus for forming a curl of a band member with a reinforcing material, wherein an arc-shaped curl with the following curvature radius is continuously formed and the belt-shaped member with the reinforcing material is plastically deformed in a spiral shape.   4. The curl forming apparatus for a band member with a reinforcing member according to claim 1, wherein the curl guide has an arc shape having a curvature radius substantially equal to or less than a curvature radius of the spiral tube. A spiral plate, a cylindrical plate, or an arc-shaped spiral surface having a radius of curvature substantially equal to or less than the radius of curvature of the spiral tube, and a plurality of rotating rollers circumscribing the cylindrical surface A device for forming a curl of a band-shaped member with a material.   A spiral tube is manufactured in which joints are formed on both side edges, a belt-like member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is attached, and the adjacent joints are joined together to form a spiral tube. In the pipe method, prior to joining the joint portions of adjacent band members with reinforcing material, the reinforcing band member has an arc shape having a radius of curvature substantially equal to or less than the curvature radius of the spiral tube. A method for producing a spiral tube, comprising forming a curl continuously and plastically deforming a belt-like member with a reinforcing material in a spiral shape.   Bonded portions are formed on both side edges, and a band member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is supplied, and the adjacent adjacent bonding portions are bonded to each other to form a helical tube. In the method of making a spiral tube, the spiral tube is fed forward while rotating, and a new strip member with a reinforcing material is supplied to the back of the spiral tube and the spiral tube is added to make a tube. Prior to joining the joints of the band members with reinforcing material, arc-shaped winding rods having a curvature radius substantially equal to or less than the curvature radius of the spiral tube are continuously applied to the band members with reinforcing material. A method for producing a helical tube, comprising: forming a belt-like member with a reinforcing material into a plastic shape in a helical manner.   Bonded portions are formed on both side edges, and a band member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is supplied, and the adjacent adjacent bonding portions are bonded to each other to form a helical tube. In the method of making a spiral tube, a spiral-shaped tube is added while a spiral-shaped tube is added to the front of the formed spiral tube, and the spiral tube is added. Prior to joining the joint portions of the band-shaped members, an arc-shaped winding rod having a curvature radius substantially equal to or less than or equal to the curvature radius of the spiral tube is continuously formed on the band-shaped member with the reinforcing material, A method for producing a helical tube, comprising: plastically deforming a belt-like member with a reinforcing material in a helical manner.   Bonded portions are formed on both side edges, and a band member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is supplied, and the adjacent adjacent bonding portions are bonded to each other to form a helical tube. In the spiral pipe making machine, the spiral pipe is fed forward while rotating, and a new strip member with a reinforcing material is supplied to the rear of the piped spiral pipe to make the pipe while adding the spiral pipe. 5. The curl forming apparatus according to claim 1 or 4 is provided integrally with the pipe making machine in a preceding stage of the joining mechanism for joining the joining portions of the belt-like members with reinforcing material to be pushed, and the belt-like member with reinforcing material is pushed into the curling guide. Or, take the reinforcing band member from the curl guide, and continuously apply the arcuate curl with a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube to the band member with the reinforcing material. Form and screw the strip with reinforcing material Pipe producing apparatus of the helical tube Jo to plastically deform and supplying the bonding mechanism.   Bonded portions are formed on both side edges, and a band member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is supplied, and the adjacent adjacent bonding portions are bonded to each other to form a helical tube. In a spiral tube pipe making machine that feeds forward while rotating the spiral tube and supplies a new band member with a reinforcing material to the rear of the spiral tube and adds the spiral tube to the tube. The curl forming apparatus according to Item 2 or 4 is provided separately from the former stage of the pipe making machine, and the band member with reinforcing material is pushed into the curl forming apparatus or the band member with reinforcing material is removed from the curl forming apparatus. Then, an arc-shaped winding rod having a radius of curvature approximately equal to or less than the radius of curvature of the spiral tube is continuously formed on the band-shaped member with the reinforcing material, and the band-shaped member with the reinforcing material is plastically deformed in a spiral shape. And supplying to the pipe making machine Pipe producing apparatus of 旋管.   10. The spiral pipe manufacturing apparatus according to claim 9, wherein the curl forming apparatus is installed on the ground in the vicinity of the start-side manhole.   Bonded portions are formed on both side edges, and a band member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is supplied, and the adjacent adjacent bonding portions are bonded to each other to form a helical tube. In the spiral tube pipe making machine, a new strip-shaped member with a reinforcing material is supplied to the front of the piped spiral pipe and the spiral pipe is added to the pipe making machine. The curl forming apparatus according to claim 1 or 4 is provided integrally with the pipe making machine in a preceding stage of a joining mechanism that joins the joining portions of the belt-like members, and the belt-like member with a reinforcing material is pushed into the curl guide, or The strip-shaped member with the reinforcing material is taken out from the curling guide, and the arc-shaped winding rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube is continuously formed on the strip-shaped member with the reinforcing material to reinforce. A plastic strip in a spiral shape Pipe producing apparatus of the helical tube and supplying the bonding mechanism.   Bonded portions are formed on both side edges, and a band member with a reinforcing material to which a reinforcing material that is continuous in the longitudinal direction is supplied, and the adjacent adjacent bonding portions are bonded to each other to form a helical tube. 5. A spiral tube manufacturing machine for manufacturing a spiral tube, wherein the spiral tube is left to be left and a new strip member with a reinforcing material is supplied in front of the spiral tube and the spiral tube is added. The curl forming apparatus described is provided separately from the former stage of the pipe making machine, and the band member with reinforcing material is pushed into the curl forming apparatus while rotating the rotating frame in the direction opposite to the supply direction of the band member with reinforcing material. Or, a strip-shaped member with a reinforcing material is taken out from the curl forming device, and an arc-shaped curled rod having a curvature radius substantially equal to or less than the curvature radius of the spiral tube is continuously applied to the strip-shaped member with the reinforcing material. And screw the belt-like member with the reinforcing material Pipe producing apparatus of the helical tube Jo to plastically deform and supplying the pipe producing machine.   13. The spiral pipe manufacturing apparatus according to claim 12, wherein the curl forming apparatus is installed on the ground near the start side manhole or in the start side manhole.

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