JP4371969B2 - Method for forming strip plate bundle and method for unrolling strip plate bundle - Google Patents

Description

  The present invention relates to a method for forming a strip-shaped plate bundle that is wound in a hollow cylindrical shape to transport a long strip-shaped plate that is spirally wound into a spiral tube, and a method for unfolding the strip-shaped plate bundle. In particular, a strip-shaped plate that is wound spirally in an existing pipe to form a spiral pipe so that the inner peripheral surface of the existing pipe is lined is wound and directly fed into the existing pipe. The present invention relates to a method for forming a belt-like plate bundle for winding and transporting the belt-like plate that has been formed, and a method for unwinding the belt-like plate bundle.

  In an existing pipe that has deteriorated, a strip-shaped strip (hereinafter referred to as a profile) is spirally wound to form a spiral tube, and the inner surface is lined by the formed spiral tube. It has been broken. In such an existing pipe lining method, a method is also employed in which a profile is directly fed into an existing pipe and the profile is spirally wound inside the existing pipe to produce a spiral pipe. In such a case, it is necessary to transport the long profile to the site where the existing pipe lining method is implemented.

  The profile is usually transported to the site while being wound around a transport drum. The drum on which the profile is wound is configured by mounting a cylindrical body between the center portions of a pair of disk-shaped side plates so that a long profile is wound around the body. It has become. The transport drum around which the profile is wound is temporarily placed on the site, and the profile is unwound from the transport drum and is sent into the existing pipe, and then spirally wound in the existing pipe, so that the spiral pipe Is manufactured.

  The length of the profile wound around the transport drum is generally about 500 m to 2000 m, and the length of the spiral tube formed by this length profile is about 2 m. If it is, it will be about 5-12 m. Therefore, when the length of the aging existing pipe is long and the lining length is long, it is necessary to bring a large number of transport drums to the site.

  The transport drum has a long profile length that can be transported at one time and the maximum size that can be transported by truck or the like. Usually, the side plate has an outer diameter of 3000 mm and a body length of about 1200 mm. Is frequently used. Therefore, when a large number of transport drums of such a size are brought to the site and temporarily placed, there is a problem in that the traffic on the site is congested or a pedestrian's walking path is blocked during the temporary placement period.

  In order to avoid this problem, if the transport drums are brought to the site one by one, a large space is required in another place as a place for temporarily storing the transport drums. Also, in factories that manufacture profiles and wind them around transport drums, many transport drums must be stored until they become necessary. If consumption exceeds the possible length, there is a possibility that a temporary shortage of profile supply may occur.

As a transport drum, “a pair of disk-shaped side plates each having a through-hole at the center and arranged in parallel with an appropriate interval between each other and each side plate are fixed. A plurality of connecting rods that are removably attached in an erected state between the outer peripheral edge portions of each side plate facing each other at an appropriate interval in the circumferential direction so as to hold the state of The profile is wound by being inserted into the through hole of each side plate and installed between the side plates so that it can be pulled out from the through hole of each side plate while the profile is wound. And a drum for a profile characterized in that the drum is provided (see, for example, Patent Document 1).
Japanese Patent No. 30223353

  However, in these methods using transport drums, there is no change in that the wound profile is temporarily placed on the site until the use of the profile is completed, and a large number of transport drums are required for the lining work of aging pipes. However, the problem that a vast space is required for the storage location still remains.

  Accordingly, there has been a demand for a transport method that does not require a take-up drum and a method for unraveling the profile without transporting the profile around a take-up drum for transport. However, such a method has not been developed.

  The present invention solves such a problem, and is wound in a hollow cylindrical shape that does not require a take-up drum for transporting a long belt-like plate that is wound spirally to form a spiral tube. The present invention has been made for the purpose of providing a method for forming a rotated strip-shaped plate bundle and a method for unfolding the strip-shaped plate bundle.

  The present invention according to claim 1 for solving the above-described problem is that (Section 1) is configured so that the slits face each other on a pair of circular side plates in which a plurality of slits are provided at equal intervals from the outer peripheral edge toward the center. The bottom position of each slit is equidistant from the center of the side plate, and a rigid center side bar is inserted into the bottom of each slit of the pair of circular side plates, and the center side bar Both ends of the circular side plate are wound so as to protrude from the outer surface side of the circular side plate. A line connecting the center of the winding axis of the outermost surface portion of the strip-shaped plate at the end of winding and the center-side rod body, the step of winding a long strip-shaped plate used for lining the inner peripheral surface into a hollow cylindrical shape At the position where the extension line of A rigid outer rod longer than the winding width of the plate is placed in parallel with the central rod, making a pair, and the both ends of the central rod and the outer rod paired together are bound together A method for forming a band-like plate bundle, comprising: a step of detachably binding with a tool; and a step of removing a pair of circular side plates from the winding shaft.

The invention according to claim 2 (invention 2) is a circular cylindrical container having at least one open end, which accommodates the band-shaped plate bundle obtained by the method for forming the band-shaped plate bundle according to claim 1. Placed on the cradle so that the central axis of the cylindrical container is substantially horizontal so that it can swing or rotate in the circumferential direction, and the axial direction of the hollow cylindrical strip-shaped plate bundle is the axial direction of the container , Remove the binding tool, remove the center rod and the outer rod paired with it, and cover the opening of the cylindrical container with a cover plate with a through hole in the center. The strip-shaped plate bundle is unwound from the through hole, and is unwound from the center side of the roll .

  In the invention 1, a pair of circular side plates in which a plurality of slits are provided at equal intervals from the outer peripheral edge toward the center are arranged so that the slits face each other, and the bottom position of each slit is from the center of the side plate. A rigid central bar is inserted into the bottom of each slit of the pair of circular side plates, and spans so that both ends of the central side bar protrude from the outer surface side of the circular side plate. A long belt-like plate (profile) is wound around a hollow cylindrical shape on the winding shaft constructed in this way, and the extension of the line connecting the center of the winding shaft on the outermost surface of the belt-like plate at the end of winding and the central rod At the position where the line intersects, place a pair of rigid outer rods that are longer than the winding width of the rolled strips so that they are parallel to the central rod, and the central rod and the outer pair Both ends of the rod body can be detached with a tie And flux, then, by removing a pair of circular side plates from the winding shaft, it is intended to eliminate the winding drum. That is, the long belt-like plate is wound on the winding shaft combined with the rods so as to form a hollow short cylinder having a large thickness. The length of the cylindrical shape in the axial direction is shorter than the length of the rod constituting the winding shaft, and the rod is projected from both sides of the cylindrical shape.

  The profile here is a profile particularly suitable for lining the inner peripheral surface of an existing pipe by being spirally wound in the existing pipe to form a spiral pipe. Therefore, a rigid synthetic resin is usually used for the profile. Therefore, when this profile is wound on the winding shaft, the end of the profile jumps up on the outermost surface at the end of winding due to the rigidity of the profile itself, and the profile wound in the hollow cylindrical shape is unraveled. Therefore, in order to prevent the profile from being unwound, the portion close to the end of winding is usually tied up with a string, a rope, a strip, or the like to prevent unraveling.

  In the present invention, the rods are respectively applied to the outer peripheral surface and the center side surface of the belt-like plate wound in a cylindrical shape, and the rods are bound with a binding tool. Therefore, the cylindrical shape is held in the thickness direction by the cylindrical body by the rod body, so that the shape is maintained, and the shape is not destroyed by vibration during transportation. The outer rod body also has a role of preventing the cylindrical bundle from rolling during transportation and reducing the possibility of damaging the profile surface.

  The rod body arranged on the center side becomes a winding shaft around which the belt-like plate is wound. Further, the outer rod body is arranged at the position where the extension line of the line connecting the center of the winding shaft and the central rod body intersects the outermost surface portion of the strip-shaped plate of the cylindrical body, and is parallel to the central rod body. And a pair. The length of the outer rod is longer than the length of the cylindrical body, and both end portions thereof project from both sides of the cylindrical body.

  Since the center side rod body and the outer side rod body are stopped by a binding tool to bind the profiles, both are required to have high bending strength. The shape may be solid or hollow, and the cross-sectional shape may be any shape as long as the portion in contact with the profile is not angular, for example, a triangle Polygonal shapes such as quadrilaterals; curved surface shapes such as circles and ellipses; shapes such as C-type, L-type, I-type, and T-type. Examples of the material used for this include, for example, thermoplastic or thermosetting synthetic resins; fiber-reinforced synthetic resins; metals; natural materials such as wood and bamboo; and rods made of inorganic materials such as reinforced concrete. Can be mentioned. The outer rod body may have a long and narrow plate shape.

  The rod body for tightening the profile is usually fixed by a ring-shaped binding tool. Therefore, in order to reduce damage to the profile, it is preferable that the surface in contact with the profile is, for example, a smooth curve or the like so that it does not contact the profile surface locally. For example, a curved surface along the inner or outer peripheral surface of the wound profile.

  The binding tool is wound around both ends of the pair of rods protruding from the profile on both sides to bind them. Since the bundled body of the profile obtained in the present invention is unraveled before being used after being brought into the work site, the binding tool must be detachably bound to each other. That is, since the binding tool binds the corresponding ends of the pair of rods so as to be detachable, a binding tool having a high tensile strength that does not cut even when a strong tensile force is applied is required. Moreover, although it is preferably an elastic material, it is not always necessary to be an elastic material.

  Examples of materials used as a binding tool include, for example, metals; stretched synthetic fibers or synthetic resins; fiber-reinforced synthetic resins; natural fibers such as cotton; and elastic materials such as synthetic or natural rubber. , Strings, ropes, strips and the like. These may be wound around the ends of a pair of rods, fixed so that the ends of the binding tool are not loosened, and the pair of rods may be bound.

  As a method for preventing the binding tool after binding from being loosened, a general fastening tool may be used, and it is not particularly limited. For example, a general thing such as a fastening metal fitting for PP (stretched polypropylene) band for packing may be used.

  The binding tool may be a combination of a long bolt and a corresponding nut. In this case, for example, a through hole is provided at the end of the rod body as an example, a long bolt may be inserted into this and tightened with a nut, and the rod body will spring by slowly loosening when removing the binding tool. This reduces the risk of working more safely.

  The invention 1 is a method for forming a strip-shaped plate bundle, which is formed by spirally winding a long belt-shaped plate that is wound spirally into a hollow cylindrical shape to form a bundle. That is, a pair of circular side plates in which at least one or more slits are provided at equal intervals from the outer peripheral edge toward the center are arranged so that the slits face each other. The bottom position of the slit is equidistant from the center of the side plate. A rod body is inserted into the bottom of each slit of the pair of side plates and is spanned to form a winding shaft.

  In the first aspect, after the winding of the belt-shaped plate, the center side rod body and the outer side rod body paired therewith are removed except for at least one set near the winding end portion of the outermost surface. That is, the profile is wound around the winding shaft in a spiral manner, and on each outer peripheral surface of the cylindrical body that has been wound, a pressing rod that is paired with each rod is arranged in parallel with the winding shaft, The presser bar that is paired with it is detachably bound with a tie. Thereafter, the both side plates are removed, so that the band-like plate bundle of the hollow cylindrical shape of the invention 1 is obtained.

  The binding position of the belt-like body, that is, the position of the paired bar body that stops the profile is attached at least near the end of winding of the profile. Since the profile is a band-shaped plate made of a synthetic resin having rigidity, the profile wound inside is subjected to a force that can be unwound outward by its own rigidity, and is thus tightened outward. At the outermost surface at the end of winding, the end of the profile jumps up. Therefore, the profile cannot be solved by stopping at least the part where the profile jumps up. However, it goes without saying that it may be provided at other positions.

  Invention 2 is a method for unwinding the band-like plate bundle. That is, a hollow cylindrical container having at least one open end, which accommodates the band-shaped plate bundle bound in the hollow cylindrical shape, is formed in a cylindrical shape on a cradle so as to be swingable or rotatable in the circumferential direction. Place the container so that the central axis is substantially horizontal. The placed cylindrical container is provided with a movement prevention tool such as a baffle plate on the cradle so as not to move in the axial direction during the profile unraveling operation, thereby preventing the movement. The strip-shaped plate bundle is inserted into the cylindrical container so that the axial direction thereof coincides with the axial direction of the container.

  Subsequently, when the binding tool is removed, the profile is unconstrained and the diameter of the profile is increased until the outer peripheral surface of the hollow cylindrical container contacts the inner peripheral surface of the container. In that state, remove the central rod and the outer rod paired with it, cover the opening of the cylindrical container with a cover plate with a through hole in the center, and cover the profile during the work of unraveling the profile. Temporarily fix so that the plate does not come off.

  The lid plate is detachably fixed to the barrel portion of the cylindrical container at the outer periphery thereof. How to stop is not particularly limited, but, for example, a flange is provided outward at the end of the body of the container, the cover plate is the same as the outer diameter of the flange, and a notch connected to the through hole or edge is provided in the flange. Examples thereof include a method of screwing with a bolt and a nut, and a method of fastening using a clamp type fastener. Further, the lid plate may be circular and rotatable about the axis of the cylindrical container.

  From the through hole of the cylindrical container lid plate, the strip-shaped plate bundle is taken out from the center side of the roll while being unwound. Since the cylindrical container can be swung or rotated in the circumferential direction, the unraveled profile is sent to the pipe making machine without excessive twisting, and is smoothly made into a spiral pipe. The When the profile is used up, the next profile is similarly used in the cylindrical container.

  In the first aspect of the present invention, a long belt-like plate is wound around a hollow cylindrical shape on a winding shaft composed of a pair of circular side plates and a plurality of center-side rods, and is bound by a binding tool, and then a pair of circular side plates is wound from the winding shaft. Finally, it is possible to obtain a band-like plate bundle that does not require a winding drum.

In the second aspect of the present invention, the above-described profile bundle is stored and used in a dedicated cylindrical container, and when the profile is used up, the next profile is attached. Therefore, it is sufficient to prepare one cylindrical container at the pipe making site, and since the binding material of the profile is only the rod and the binding tool, the large winding drum does not occupy the space near the work site.
As a result, it is possible to perform the lining work on the inner peripheral surface of the aging existing pipe without congesting the traffic at the work site or blocking the pedestrian's walking path.

Next, a method for forming a strip-shaped plate bundle according to the present invention and a method for unfolding the strip-shaped plate bundle obtained by the forming method will be described with reference to the drawings. FIG. 1 is a process diagram showing a procedure of an example of a method for forming a strip-shaped plate bundle, FIG. 2 is a plan view of an example of a side plate used when winding a profile, and FIG. 3 is a cross section showing an example of a sectional shape of a rod FIG. 4 and FIG. 4 are sectional views showing an example of a binding tool for binding rod bodies. It should be noted that the cylindrical end face of the bundled body in which the band-like body (profile) is wound appears to overlap the profile spirally, but in the following figures including this figure, the same circular shape (see FIG. It may be displayed or not displayed in 1) (FIG. 5).

  First, the winding drum is assembled. That is, as shown in FIG. 1, when forming the band-like body (profile) 2 into a bundle, two side plates 3 serving as both side surfaces of the bundle winding drum are prepared. The two side plates are arranged to face each other, and the central portions of the side plates are connected by a hollow cylinder (core) 33 through which an arbitrary rotation shaft is inserted in order to rotate the winding drum.

  The rods 4 that become the center side after the band-like plate 2 (profile 2) are bound are arranged on the surface of the core 33 at the same interval so that the length direction of the rods 4 is parallel to the axial direction of the core 33. The side plates 3 applied to both ends of the hollow core 33 of the take-up drum support the core 33 so that the take-up drum can rotate. A method for rotatably supporting the core 33 is not particularly limited. In addition, the space | interval of the side plates 3 is made shorter than the length of a rod.

  The side plates 3 on both sides are provided with a through hole 32 into which the core 33 of the take-up drum is inserted, and a slit 31 that communicates to the circumferential end of the side plate 3 and accommodates the center side rod body 4. The rod body to be accommodated is accommodated so as to protrude outward from the side plates 3 on both sides. The number of slits provided is the same as the number of necessary rods, and the intervals between the slits 31 are the same along the circumference.

  The width of the slit 31 is set to a width that allows the binding tool 6 to pass through when the binding tool 6 that binds the central and outer rod bodies 4 and 5 is attached to the rod body.

  The center-side end position of the slit 31 is set to a position outside the position entering the center side by the thickness of the rod from the position of the outer peripheral surface of the core 33 of the winding drum. Therefore, the outer side position of the center side bar 4 accommodated in the center side of the slit 31 is located outside the core surface, and the profile 2 wound around the center side bar 4 partially contacts the core 33. Even if there is a thing, the whole surface does not touch. Therefore, after bundling the profile 2 formed into a cylindrical shape, the core 33 can be extracted smoothly when the core 33 is extracted.

  The cross-sectional shape of the rod is not particularly limited as long as it is a shape that is difficult to bend. That is, as described above, it may be solid or hollow, and may be polygonal, curved, C-type, H-type, I-type, L-type, or the like. However, the surface in contact with the profile 2 is preferably a smooth curved surface so that local stress is not applied to the profile 2. For example, as an example, FIG. 3A is an example of a cross-sectional shape of the profile contact surface of the central rod 4, and FIG. 3B is an example of a cross-sectional shape of the profile contact surface of the outer rod 5. It is not limited to examples. The surface that does not come into contact with the profile 2 is not particularly limited as long as the binding tool 6 is smoothly bound and not loosened, and the binding tool 6 is not damaged during binding.

  When the required number of the center side rod bodies 4 are accommodated in the predetermined slits 31, the predetermined length of the strip-like profile 2 is wound thereon between the side plates 3 on both sides of the core according to a conventional method. Molded into a cylindrical shape. When the winding is finished, the outer rod 5 is stored in the slit 31 from above.

  The central rod 4 and the outer rod 5 housed in the same slit 31 are bound by the binding tool 6. The binding method may be selected as appropriate depending on the type of the binding tool 6 to be used. In the case of FIG. 4A, the binding tool 6 is a belt-like rubber plate 61 provided with locking hooks 611 at both ends. 4 (b) shows a case where the PP band 62 is wound with a rod body and the adjacent tips are fastened with a stopper 621, and FIG. 4 (c) shows a case where a long bolt 631 and a nut 632 are used. In either case, the pair of rods are bound by the binding tool 6 and the binding tool 6 supports the cylindrical end surface of the profile 2 to prevent the shape from collapsing.

  When all the corresponding rods are bound and the binding of the profiles 2 is completed, the side plates 3 on both sides are removed. At this time, the width of the groove is set so that the binding tool 6 can pass through, but depending on the position of the rod body accommodated in the adjacent slit 31, the binding tool 6 may not be able to be removed. At that time, the side plate 3 is not integrated, and the split side plate 3 may be formed in units of slits 31. Detachment should be removed one by one in units of division.

  The bundle 1 of the profile 2 with the side plate 3 removed is extracted from the core 33 of the winding drum. At this time, the center bar 4 is strongly pressed against the core by tightening the profile 2. Accordingly, if the core itself is a divided core and is divided at the time of extraction to reduce the outer diameter of the core, or the core can be divided into small pieces, extraction is facilitated.

  The bundle 1 of the profile 2 is bundled using a plurality of pairs of rods. This rod may be removed except for at least one pair of rods provided in the slit 31 at a location near the winding end portion of the profile 2. Even if the profile 2 is removed, the profile 2 itself has rigidity. Therefore, if the profile 2 is not loosely wound and the binding tool 6 is sufficiently bound, the cylindrical shape will not collapse.

  The bundle 1 of the profile 2 formed into the cylindrical shape in this way is transported as it is, but if necessary for long-distance transportation, etc., a package for preventing the dirt on the surface of the profile 2 and preventing scratches is provided. May be.

  FIG. 5 is a partially cutaway perspective view showing an example of a method for unwinding the bundled profiles 2. At the site where the profile 2 is unwound, the hollow cylindrical container 7 having at least one end opened is swingable or rotatable in the circumferential direction so that the central axis of the cylindrical container 7 is substantially horizontal. 8 is mounted. In this cylindrical hollow container, the hollow cylindrical strip-like plate bundle 1 of the present invention is accommodated so that its axial direction coincides with the axial direction of the container.

  The cradle 8 of the cylindrical container 7 is provided with a roller 9 on the pedestal 8, and the body of the cylindrical container 7 is placed on the roller 9. The cylindrical container 7 can swing or rotate on the roller 9. The cradle 8 itself may be provided with a moving means such as a wheel, and may be temporarily stopped so that the cradle 8 itself does not move by being brought to the site each time by a wheel stop or the like.

  The roller 9 has a function of supporting the cylindrical container 7 placed thereon so as to be swingable or rotatable in the circumferential direction. Therefore, the shape is not particularly limited as long as the above function can be exhibited, and examples thereof include a wheel shape (see FIG. 6A), a rotating roll shape (see FIG. 6B), and the like.

  The table 8 may be provided with a container movement prevention stopper (not shown) so that the cylindrical container 7 placed on the roller 9 does not move in the axial direction when the profile 2 is unwound. The stopper may be a simple protrusion, but since the side of the end face of the cylindrical container 7 is in contact with the stopper, the contact portion is aligned with the cylindrical rotation direction so as not to hinder the rotation of the cylindrical container 7. A bearing or the like may be provided.

  The inner diameter of the cylindrical container 7 is made larger than the apparent outer diameter on the outer side of the outer rod body 5 of the band-like plate bundle 1. Moreover, the length is made longer than the length of the center side or the outer side rod 5. Therefore, the strip-shaped plate bound body 1 can be stored in the cylindrical container 7 while being bound by the rod body and the binding tool 6.

  In the cylindrical container 7 placed on the cradle 8, the hollow cylindrical strip-shaped plate bundle 1 is stored so that the axial direction thereof coincides with the axial direction of the container. The storing method is not particularly limited as long as it is moved and stored by a forklift or other transport means. When the binding body is stored, the binding tool 6 is removed, and the central bar 4 and the outer bar 5 paired therewith are removed.

  When the binding tool 6 is removed, the profile 2 is loosened so that the outer diameter increases due to its own rigidity, and the outer stick 5 is brought into close contact with the inner peripheral surface of the container. Therefore, it is difficult for the rod to come off, and the profile 2 may be damaged if it is forcibly removed. Therefore, when the cylindrical container 7 is provided with at least one groove or the like in which the outer rod body 5 can be stored, and the outer rod body 5 is stored therein and the binding tool 6 is loosened, the rod body is finally extracted. It will be easier, so you may do that. Since it is sufficient that only the rod body to be extracted last can be stored, only one groove may be provided, but there may be many grooves. When there is only one groove, the rod body in the vicinity of the winding end of the profile 2 may be stored in this groove.

  When the central bar 4 and the outer bar 5 are extracted, the profile 2 wound and formed into a cylindrical shape is constrained only at the body of the cylindrical container 7. In this state, the opening of the cylindrical container 7 is covered with a cover plate 10 provided with a through hole 11 at the center, and the cover is detachable. For example, the lid plate 10 is provided with a flange at the end of the cylindrical container 7, and a bolt hole is provided in each as the lid plate 10 of the same type as the flange, and a bolt is inserted into the bolt hole and fastened with a nut. It is sufficient if it can be detachably attached by, for example.

From the through hole 11, the strip-shaped plate bundle 1 is taken out from the center side of the winding while being unwound and supplied to a pipe making machine to constitute a spiral tube. The cylindrical container swings or rotates on the roller 9 as the profile 2 is unwound, so that the unraveled profile 2 is further twisted or untwisted and returned to the pipe making machine. Can supply. Further, since the stopper 11 is provided, the cylindrical container 7 does not move during the unwinding of the profile 2.

  When all the profiles 2 in the cylindrical container 7 have been unraveled, the lid plate 10 is removed, the next strip-shaped plate bundle 1 is stored in the cylindrical container 7, the rod body is similarly removed, the lid is closed, and the profile is formed. Solve 2 Accordingly, the installation place of the cylindrical container 7 is only the rod body and the tying member 6 for binding the profile 2, and there is no take-up drum. Does not require a vast space for placing the take-up drum.

It is process drawing which shows the procedure of an example of the formation method of a strip | belt-shaped board | plate bundle. (A) It is a perspective view of an example which assembled the winding drum of the strip | belt-shaped board . (B) It is a side view of an example of the state which wound the profile on the winding drum. (C) It is a perspective view of an example of the state which removed the side plate. (D) It is a front view of an example of the state which bound the center side rod body and the outer side rod body with the binding tool. (E) It is a partial perspective view of an example in which the binding body is bound only at one location. It is a top view of an example of the side plate used at the time of profile winding. It is sectional drawing which shows an example of the cross-sectional shape of a rod. (A) It is an example of the cross-sectional shape of the profile contact surface of a center side rod. (B) It is an example of the cross-sectional shape of the profile contact surface of an outer side rod. It is sectional drawing which shows an example of the binding tool 6 which binds rods. (A) It is an example which is a strip | belt-shaped rubber plate in which the binding tool provided the latching hook in the both ends. (B) This is an example in which the binding tool is a PP band in which rods are wound and the adjacent tips are fastened to each other with a stopper. (C) An example in which the binding tool is a long bolt and a nut. It is the perspective view which decomposed | disassembled into an example of the method of unwinding the said bundled profile. It is an example of a roller shape. (A) It is a perspective view of an example whose roller is a wheel. (B) It is a perspective view of an example whose roller is a rotation roll.

1 Banded plate bundle 2 Profile (banded plate)
3 Side plate 31 Slit 32 Through-hole through which the core passes 33 Hollow cylinder (core)
4 Center Bar 5 Outer Bar 6 Binder 61 Rubber Plate 611 Locking Hook 62 PP Band 621 Fastener 631 Bolt 632 Nut 7 Cylindrical Container 8 Receiving Base 9 Roller 10 Lid Plate 11 Through-hole for Extracting Profile

Claims (2)

A pair of circular side plates provided with a plurality of slits at equal intervals from the outer peripheral edge to the center are arranged so that the slits face each other, and the bottom positions of the slits are equidistant from the center of the side plate. A rigid center bar is inserted into the bottom of each slit of the pair of circular side plates, and both ends of the center side rod are bridged so as to protrude from the outer surface side of the circular side plate. A long, strip-shaped plate used to line the inner peripheral surface of an existing pipe that has been aged is wound into a hollow cylinder by being wound around the winding shaft in a spiral manner at the construction site. The process of stacking,
A rigid outer bar longer than the winding width of the wound strip at the position where the extension line of the line connecting the center of the winding shaft and the central bar on the outermost surface portion of the strip at the end of winding intersects. Arranging the body so as to be parallel to the center side bar, making a pair, and binding both ends of the center side bar and the outer bar to be paired with a binding tool so as to be detachable;
And a step of removing a pair of circular side plates from the winding shaft. A hollow cylindrical container having at least one open end, which accommodates the belt-like plate bundle obtained by the method for forming a belt-like plate bundle according to claim 1, is formed in a cylindrical shape so as to be swingable or rotatable in the circumferential direction. Place the container on the cradle so that the central axis of the container is approximately horizontal, insert the hollow cylindrical strip-shaped plate bundle so that its axial direction coincides with the axial direction of the container, and remove the binding tool. Remove the center rod and the outer rod that is paired with it, cover the opening of the cylindrical container with a lid plate with a through hole in the center, and wrap the strip plate bundle from the through hole A method for unwinding a strip-shaped plate bundle, wherein the unrolling is performed while unwinding from the center side of the sheet.

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