WO2015186416A1 - 巻癖形成装置 - Google Patents
巻癖形成装置 Download PDFInfo
- Publication number
- WO2015186416A1 WO2015186416A1 PCT/JP2015/060206 JP2015060206W WO2015186416A1 WO 2015186416 A1 WO2015186416 A1 WO 2015186416A1 JP 2015060206 W JP2015060206 W JP 2015060206W WO 2015186416 A1 WO2015186416 A1 WO 2015186416A1
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- WO
- WIPO (PCT)
- Prior art keywords
- belt
- holding unit
- main body
- forming apparatus
- curl forming
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/72—Winding and joining, e.g. winding spirally helically using external forming surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/30—Lining or sheathing of internal surfaces using sheet or web-like material
- B29C63/32—Lining or sheathing of internal surfaces using sheet or web-like material by winding helically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1655—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section a pipe being formed inside the old pipe by winding strip-material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
- B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
Definitions
- the present invention relates to a roll forming device for a band-shaped member with a reinforcing material.
- a rehabilitation pipe by winding a long belt-like member in a spiral shape, and laying the rehabilitation pipe inside an aged existing pipe to rehabilitate the pipe line.
- Some belt-like members are provided with a plurality of ribs continuously in the longitudinal direction, and a metal reinforcing material is mounted between the ribs.
- the belt-like member to which the reinforcing material is attached has high rigidity, and thus is suitably used to form a rehabilitation pipe having high self-supporting strength.
- This type of belt-shaped member is wound up in a state in which a reinforcing material is mounted in advance and transported to a construction site.
- the belt-like member with the reinforcing material is stored in a construction drum or the like at the time of construction, and is drawn out from there.
- the belt-like member is in a state with a curl when it is wound.
- the curl of the belt-like member has a different curvature between the belt-like member wound on the inner peripheral side of the drum and the belt-like member wound on the outer peripheral side, and gradually changes in the process of drawing out the drum and forming the rehabilitation pipe.
- Such a belt-shaped member may interfere with the inner wall of the manhole when introduced from the manhole at the construction site.
- the rehabilitated pipe When forming a rehabilitated pipe with a smaller radius of curvature than the roll of the band-shaped member, the rehabilitated pipe is gradually enlarged to form the target tube, while the band-shaped member tries to restore the original radius of curvature. There was also a problem that it was difficult to form a diameter rehabilitation pipe.
- Patent Document 1 for deforming the belt-shaped member into a desired spiral shape before the pipe making operation. Proposes a curl forming device.
- a rehabilitated pipe with a target diameter can be reliably produced, but there are the following problems, and workability is improved more quickly and with higher accuracy. There was still room for improvement in order to form a high rehabilitation tube.
- the belt-shaped member When continuously pulling out the belt-shaped member from the drum, the belt-shaped member is pulled in the axial direction from the inner peripheral side of the drum toward the curl forming apparatus.
- the band-shaped member is hard with a metal reinforcing material attached, and may not be smoothly pulled out to the curl forming apparatus installed at a distance in front of the drum.
- the belt-like member 100 wound spirally is drawn in an oblique direction from the drum, so that the side edge of the belt-like member 100 is wound adjacently. It is easy to get caught on the side edge. If the belt-like members 100 are caught, the preceding belt-like member 100 is pulled and cannot be pulled out smoothly and continuously. As a result, the curl forming apparatus and the pipe making machine had to be stopped and the belt-shaped member 100 had to be manually corrected.
- the conventional curl forming apparatus Since the conventional curl forming apparatus is installed in front of the strip member in the drawing direction with respect to the drum, the angle of entry of the strip member with respect to the apparatus constantly changes. Therefore, an excessive load is likely to be applied to the belt-shaped member that passes through the pinch roller and the guide portion of the curl forming apparatus.
- the present invention has been made in view of the above problems, and allows a belt-shaped member to be smoothly drawn and deformed into a desired shape without applying a load to the belt-shaped member. Without the need to stop the machine or the pipe making machine, or manually modify the belt-like member, continuously and stably feeding the belt-like member to the pipe making machine to improve work efficiency and require rehabilitation work
- An object of the present invention is to provide a curl forming apparatus capable of shortening the time.
- the solution means of the present invention for achieving the above object is directed to a curl forming apparatus for deforming a strip-shaped member for pipe rehabilitation into a spiral bent shape.
- a main body part that deforms the band-shaped member and a support body that supports the main body part on a holding unit of the band-shaped member are provided.
- the band-shaped member is provided with a reinforcing material along the longitudinal direction, and is spirally wound inside the holding unit to form a hollow portion in the axial direction of the holding unit. Then, the main body is disposed in the hollow portion, and the belt-like member is drawn inside the holding unit to be deformed, and the support body is rotatably attached to the holding unit.
- the structure rotates around the axis in conjunction with the drawing of the belt-shaped member.
- the curl forming device can be attached to the holding unit of the belt-shaped member. Therefore, even if it is a hard belt-like member provided with a reinforcing material, it can be smoothly drawn into the main body and deformed. Since the support rotates around its axis, the belt-like member is pulled in while the main body also rotates within the cavity. Therefore, the belt-like member can be deformed into a spiral bent shape without applying an excessive load or twisting the belt-like member.
- the main body portion is configured to be supported so as to be displaceable in the axial direction within the hollow portion and to move the retracted position of the strip-shaped member in the axial direction.
- a drive unit that draws and feeds the belt-like member from the inside of the holding unit to the main body portion, and a deforming roller that feeds the belt-like member sent out by the drive unit while pressing the belt-like member radially inward, and attaches the curl to the belt-like member It is to prepare.
- the belt-shaped member since it is configured as described above, the belt-shaped member can be deformed into a helical bent shape without applying an excessive load, and workability required for rehabilitation work is greatly improved, and work time is reduced. It becomes possible to shorten.
- FIG. 1 is a front view showing a curl forming apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a side view showing the curl forming apparatus according to the first embodiment of the present invention.
- FIG. 3 is a front view showing the curl forming apparatus and the holding unit.
- FIG. 4 is a side view of FIG.
- FIG. 5 is an explanatory view showing the operation of the main body in the curl forming apparatus.
- FIG. 6 is an explanatory view showing a method for rehabilitating existing pipes performed using the curl forming apparatus.
- FIG. 7 is an explanatory view showing another method for rehabilitating existing pipes performed using the curl forming apparatus.
- FIG. 8 is a cross-sectional view showing an example of a band-shaped member with a reinforcing material.
- FIG. 9 is a cross-sectional view showing a joined state of the belt-like member.
- FIG. 10 is a perspective view showing an example of the holding unit.
- FIG. 11 is an explanatory view showing a belt-like member with the reinforcing material.
- FIG. 12 is a front view showing a curl forming apparatus according to Embodiment 2 of the present invention.
- FIG. 13 is a side view showing a curl forming apparatus according to Embodiment 2 of the present invention.
- FIG. 14 is a front view showing the curl forming apparatus and the holding unit.
- FIG. 15 is a side view of FIG.
- FIG. 16 is a front view showing the main body of the curl forming apparatus according to the second embodiment.
- FIG. 17 is a side view showing the main body of FIG. FIG.
- FIG. 18 is a front view showing a modification of the main body of the curl forming apparatus according to the second embodiment.
- FIG. 19 is a side view showing the main body of FIG.
- FIG. 20 is an explanatory view showing an example of a deformation roller of the curl forming apparatus according to the second embodiment.
- FIG. 21 is an explanatory view showing another example of the deformation roller.
- FIG. 22 is an explanatory view showing still another example of the deformation roller.
- 23 (a) and 23 (b) show another example of a band-like member with a reinforcing material, FIG. 23 (a) is a sectional view, and FIG. 23 (b) is an enlarged perspective view showing a joining end portion by a connector. It is.
- the curl forming apparatus 1 is used to attach a spiral curl to the band-shaped member 100 inside the holding unit 4 when the existing pipe 6 is rehabilitated.
- the band-shaped member 100 is accommodated in the holding unit 4 in a state of being spirally wound.
- the spiral curl is required to be formed in the band-shaped member 100 to which the reinforcing material 120 is attached and which has high rigidity.
- This winding rod is formed at the stage before the rehabilitation pipe 130 is manufactured.
- the belt-like member 100 is a long body and has a belt-like member main body 110 and a reinforcing material 120.
- the band-shaped member main body 110 is formed by extruding a flexible synthetic resin material such as hard vinyl chloride, polyethylene, or polypropylene, and includes a rib 111 having a substantially T-shaped cross section.
- the band-shaped member 100 is shown with hatching indicating a cross section omitted.
- the joint convex part 112 is provided in one side edge part of the strip
- FIG. The other side edge portion is provided with a joint concave portion 113 into which the joint convex portion 112 is fitted, and an inclined piece 114 to be fitted into the adjacent rib 111.
- the joint recess 113 is integrally formed with a rib 111 having a substantially T-shaped cross section on the opposite side of the recess.
- the reinforcing material 120 is made of a strip-shaped steel plate and is mounted between the ribs 111 of the strip-shaped member main body 110.
- the reinforcing member 120 is formed in a cross-sectional shape in which a central portion in the width direction is raised and bent in a convex shape, and both side edge portions are bent obliquely upward and can be engaged with the rib 111.
- the belt-shaped member main body 110 is preliminarily mounted with a reinforcing material 120, wound around a drum or the like, or wound into a substantially cylindrical shape and transported to a construction site.
- the strip member 100 is supplied to the pipe making machine 5 so that the surface on which the rib 111 is erected is on the outer peripheral side.
- the belt-like member 100 is sent in a spiral shape, and as shown in FIG. 8, the leading portion and the trailing portion of the belt-like member 100 are adjacent to each other, and the joint convex portion 112 and the joint concave portion 113 are fitted together. Be joined.
- the inclined piece 114 is locked to the rib 111 of the adjacent belt-like member 100.
- belt-shaped member 100 becomes a tubular body continuous in an axial direction, and the rehabilitation pipe
- the holding unit 4 holds a long belt-like member 100 and can feed the belt-like member 100 while rotating.
- the holding unit 4 includes a pair of reed frames (rotating frames) 41 having a circular opening 411 in the center, and a connecting member 42 that is installed between the reed frames 41 and supports the pair of reed frames 41 integrally.
- a plurality of rod-shaped materials or plate-shaped materials are used for the connecting material 42, and the connecting material 42 is evenly disposed near the outer periphery of the heel frame 41.
- the belt-like member 100 is spirally wound in layers between the eaves frames 41, and a hollow portion 43 is formed in the central portion in the axial direction.
- the belt-like member 100 is spirally wound around a core member (not shown), and after being accommodated in the holding unit 4, the core member is removed and the outer peripheral side is held by the connecting member 42. As a result, a hollow portion 43 from which the core member has been pulled out is formed in the central portion of the holding unit 4 in a substantially cylindrical shape in the axial direction.
- An annular rail body 412 is integrally provided around the inner periphery of the circular opening 411 of the frame 41 (see FIG. 4).
- the rail body 412 is formed so that at least the inner peripheral side has an outer shape having a circular arc cross section.
- the holding unit 4 is placed on a base 44 provided with a rotatable roller 441 and is rotatable.
- the curl forming apparatus 1 includes a main body 2 having a curl forming means and a support 3 that supports the main body 2 on a holding unit 4.
- the support 3 is attached to the holding unit 4 and supports the main body 2 in the cavity 43 of the holding unit 4 so as to be freely displaceable in the axial direction.
- the support 3 includes a pair of support frames 31, a plurality of parallel guide bars 32 extending in the axial direction, and a support portion 33 that engages with the holding unit 4.
- the support frame 31 is a frame body formed in an annular shape, and has an outer diameter smaller than the inner diameter of the hollow portion 43 of the holding unit 4.
- the pair of support frames 31 are disposed at both front and rear ends in the axial direction with respect to the holding unit 4.
- the guide bar 32 is installed between the front and rear support frames 31 and arranged in the axial direction.
- four guide bars 32 are arranged between the support frames 31 with a uniform mutual interval in the circumferential direction.
- the support portions 33 are evenly arranged in the circumferential direction with respect to the front and rear support frames 31.
- a roller (support roller) 34 that engages with the inner peripheral edge of the circular opening 411 of the heel frame 41 of the holding unit 4 and the roller 34 are attached to the support frame 31.
- a bracket 35 is provided.
- the four rollers 34 are rotatably supported on the inner surface of the support frame 31 via brackets 35, respectively.
- Each roller 34 has a concave groove on the outer peripheral surface, and is locked to the rail body 412 of the flange frame 41 of the holding unit 4 so as to be rotatable.
- the support 3 is attached to the holding unit 4 and supported by the roller 34, and is rotatable about the axis of the holding unit 4.
- the support 3 is attachable to and detachable from the holding unit 4 by engaging the roller 34 and the collar frame 41 and releasing the engagement.
- the main body 2 of the curl forming apparatus 1 includes an annular main body frame 21, a main body holding part 22 provided on the main body frame 21, and a curl forming means provided on the inner side of the main body frame 21.
- the annular main body frame 21 has an outer diameter smaller than the inner diameter of the support frame 31.
- the main body frame 21 includes a plurality of main body holding portions 22.
- the main body holding portions 22 are evenly arranged at four positions of the main body frame 21 and are provided so as to protrude in the outer peripheral direction.
- the main body holding part 22 penetrates the guide bar 32 and holds the guide bar 32 slidably, and a support plate 222 that supports the sliding part 221 on the main body frame 21.
- the support plate 222 is fixed to both front and rear side surfaces of the main body frame 21 so as to sandwich the main body frame 21, and is provided so as to protrude in the outer peripheral direction of the main body frame 21. Thereby, the main body holding part 22 is engaged with the guide bar 32 and is movable along the guide bar 32.
- the main body 2 is disposed inside the holding unit 4.
- the main body 2 is supported by a plurality of guide bars 32 and can be displaced in the axial direction of the holding unit 4, and can reciprocate in the cavity 43 of the holding unit 4.
- the curl forming means provided in the main body 2 can be configured in various forms.
- These are provided integrally with the main body frame 21 via a mounting bracket 29.
- the guide portion 23 is made of a strip plate material having a radius of curvature substantially equal to the outer diameter of the rehabilitation tube 130 manufactured by the strip member 100, and is formed in a substantially semicircular inner surface shape that represents a part of a spiral shape. Has been.
- the guide portion 23 causes the belt-like member 100 to have a radius of curvature corresponding to the radius of curvature of the guide portion 23 by having the belt-like member 100 run along the inner surface.
- the reinforcing member 120 of the belt-like member 100 is deformed so as to have a curvature radius substantially corresponding to the curvature radius of the rehabilitation pipe 130 to be manufactured.
- the curvature radius of the guide portion 23 may be a radius of curvature equal to or less than the inner diameter of the renovated pipe 130 to be manufactured.
- the pinch rollers 24 and 25 on the upstream side and the downstream side of the guide portion 23 include an inner surface roller 27 and an outer surface roller 28, respectively. These pinch rollers 24 and 25 sandwich the belt-like member 100 from the inner surface side and the outer surface side and rotate.
- the inner surface roller 27 is disposed on the inner surface side of the guide portion 23 and is formed in a cylindrical shape.
- the outer surface roller 28 is disposed on the outer surface side of the guide portion 23, has a circumferential groove or a flange portion, and is formed so as to fit into the rib 111 and the reinforcing material 120 of the band-shaped member 100 and rotate.
- At least one of the first pinch roller 24 and the second pinch roller 25 is provided with a drive motor 26.
- drive motors 26 are provided on both the first pinch roller 24 and the second pinch roller 25, respectively.
- the drive motor 26 causes the inner roller 27 and the outer roller 28 to rotate in opposite directions to sandwich the belt-like member 100 with the reinforcing member 120, draw it into the guide portion 23, and send it out from the guide portion 23.
- the belt-like member 100 is drawn to the upstream side of the guide portion 23 and is sent to the downstream side by the driving force.
- the drive motor 26 is provided only on the second pinch roller 25, the belt-like member 100 is sandwiched and sent on the downstream side of the guide portion 23, and the upstream belt-like member 100 is drawn by the driving force.
- a guide part 23 that spirals the belt-like member 100 and a feeding unit that is arranged on the upstream side of the guide part 23 and takes the belt-like member 100 to the guide part 23, or a guide part 23, any other configuration may be used as long as it includes at least one feeding unit that is arranged on the downstream side of 23 to feed the belt-like member 100 out of the guide portion.
- the number of the guide bars 32 of the support 3 is not limited to four, and may be three or less or five or more.
- the rehabilitation work of the existing pipe 6 is performed from the upstream start side manhole 61 toward the downstream arrival side manhole 62.
- the holding unit 4 holding the belt-like member 100 is installed on the ground in the vicinity of the starting side manhole 61.
- the holding unit 4 is placed on a base 44 having a rotatable roller and is rotatable.
- the pipe making machine 5 is installed in the existing pipe 6 through the start side manhole 61.
- the pipe making machine 5 spirally winds the belt-like member 100 while rotating the inside of the existing pipe 6, and sequentially forms the renovated pipe 130 by sequentially joining the adjacent joint concave portions 113 and the joint convex portions 112. Proceeds downstream in the existing pipe 6.
- the roll forming device 1 is used in a state of being built in the holding unit 4 on the ground.
- the support 3 of the curl forming apparatus 1 is attached to the holding unit 4, and the main body 2 is disposed in the cavity 43 of the holding unit 4.
- the four rollers 34 are engaged with the rail body 412 of the heel frame 41 of the holding unit 4 and attached to the heel frame 41.
- the support 3 is supported by the group of rollers 34 and is rotatable about the axis of the holding unit 4 along the circular opening 411 of the holding unit 4.
- the main body 2 supported by the support 3 is also rotatable inside the cavity 43 of the holding unit 4.
- the belt-like member 100 is pulled out from the inner peripheral side of the holding unit 4 and passed through the first pinch roller 24, the guide portion 23, and the second pinch roller 25 of the curl forming apparatus 1.
- these pinch rollers 24 and 25 are rotationally driven, and the belt-like member 100 is drawn along the guide portion 23 and sent out.
- Subsequent strip members 100 are sequentially drawn into the main body 2 of the curl forming apparatus 1 inside the cavity 43 of the holding unit 4.
- the feeding position is sequentially fed out while reciprocating in the axial direction of the hollow portion 43 of the holding unit 4.
- the main body 2 provided with the curl forming means is disposed inside the cavity 43 of the holding unit 4 and is supported so as to be displaceable in the axial direction. For this reason, as shown in FIG. 5, the main body 2 is moved in the axial direction along the guide bar 32 in accordance with the belt-like member 100 drawn out from the inner peripheral side of the holding unit 4. Pull 100. Unreasonable force does not act on the band-shaped member 100, and the band-shaped member 100 can be smoothly guided to the main body 2.
- the belt-shaped member 100 when the belt-shaped member 100 is drawn out from the inner peripheral side of the holding unit 4, the belt-shaped member 100 is conventionally pulled out obliquely in the direction of the arrow B, and the side edge is caught by the adjacent belt-shaped member 100. It was easy.
- the main body 2 pulls the belt-shaped member 100 while being displaced in the axial direction within the holding unit 4. Therefore, the belt-like member 100 is pulled out in the direction of the arrow A shown in FIG. 11, and the problem that the belt-like members 100 are caught is unlikely to occur.
- the belt-like member 100 can be continuously and smoothly pulled out from the inner peripheral side of the holding unit 4 and guided to the guide portion 23 of the main body portion 2, so that a spiral curl can be stably formed. Become.
- the main body 2 reciprocates in the axial direction inside the cavity 43 of the holding unit 4 in the process of pulling the belt-shaped member 100.
- the main body 2 moves in the axial direction along the guide bar 32, and the winding position of the belt-like member 100 reciprocates in the axial direction. If it has been done, the belt-like member 100 is retracted while reciprocally moving in the axial direction. For this reason, the belt-like member 100 can be continuously drawn into the main body 2.
- the belt-like member 100 that has entered the main body portion 2 is guided in a spiral manner along the guide portion 23, is sent out from the second pinch roller 25, and is started from the holding unit 4 in a state where a spiral curl is attached. Guided to manhole 61. Then, as shown in FIG. 6, the belt-like member 100 is supplied to the pipe making machine 5 in the existing pipe 6 through the starting side manhole 61 while maintaining a spiral winding rod.
- the support 3 of the curl forming apparatus 1 rotates in a direction opposite to the feeding direction of the band-shaped member 100 by a reaction force when the main body 2 pulls the band-shaped member 100 and feeds the band-shaped member 100. Since the support 3 is rotatably supported by the collar frame 41 of the holding unit 4 via the roller 34, the support 3 rotates freely around the axis of the holding unit 4 in synchronization with the feeding of the belt-like member 100. The main body 2 in the holding unit 4 supported by the support 3 also rotates about the axis together with the support 3.
- the curl forming apparatus 1 can be suitably used also in the rehabilitation method in which the pipe making machine 5 is installed at the bottom of the start side manhole 61 and the existing pipe 6 is rehabilitated.
- the rope body 701 is connected to the top of the rehabilitation pipe 130 formed by the pipe making machine 5.
- a towing jig 702 such as a winch disposed on the ground is driven, and the cord body 701 is pulled in accordance with the speed at which the rehabilitation pipe 130 is formed. Thereby, the rehabilitation pipe 130 is pulled to the downstream side via the reaching side manhole 62.
- the holding unit 4 on the ground can incorporate the curl forming apparatus 1 in the same manner as described above, and can supply the belt-like member 100 to the pipe making machine 5 while stably forming a desired curl.
- the rehabilitated pipe 130 is accurately formed using the band-shaped member 100 with the reinforcing material 120, and the pipe line Can be rehabilitated.
- the curl forming device 1 When exchanging the holding unit 4 during the rehabilitation work of the existing pipe 6, the curl forming device 1 is temporarily detached from the holding unit 4, and the curl forming device 1 with respect to the holding unit 4 holding the new strip member 100. Can be used. When the rehabilitation work is completed, the curl forming apparatus 1 can be detached from the holding unit 4 and the holding unit 4 and the curl forming apparatus 1 can be separated.
- the main body 2 reciprocally moves in the holding unit 4 in the axial direction in accordance with the belt-like member 100 fed from the inner peripheral side of the holding unit 4.
- the belt-like member 100 can be pulled in, the hooks between the belt-like members 100 can be eliminated, and the winding can be continuously and stably applied without applying an excessive force.
- the curl forming apparatus 1 requires a separate control means for rotating the holding unit 4 and the curl forming apparatus 1 in synchronism because the main body 2 rotates freely around the axis in the holding unit 4. Therefore, the belt-like member 100 can be sent to the pipe making machine 5 without excess or deficiency, and even with a small number of workers, the rehabilitated pipe 130 can be formed with high accuracy, and the working time can be shortened. Can do.
- the curl forming device 1 can be installed integrally with the holding unit 4, and a space for installing the holding unit 4 is sufficient for forming the curl. Therefore, it is possible to work in a space-saving manner.
- the curl forming apparatus 1 includes a main body 20 having a curl forming means and a support 3 that supports the main body 20 on the holding unit 4 of the belt-like member 100.
- the main body portion 20 includes a main body frame 11 disposed in the hollow portion 43 of the holding unit 4 and a curl forming means attached to the main body frame 11. Since the support body 3 and the holding unit 4 have the same configuration as that of the first embodiment, they are denoted by the same reference numerals and detailed description thereof is omitted.
- the main body 20 includes a main body frame 11 that spans two guide bars 32.
- the main body frame 11 is made of a rod-shaped steel material having high rigidity such as a square pipe material, and is formed in a bent shape that approximates the outer shape of the annular support frame 31.
- the sliding portion 12 includes a hollow portion that penetrates in a cylindrical shape, and holds the guide bar 32 in a penetrating manner.
- the main body frame 11 is connected to two guide bars 32 and is movable in the axial direction along the guide bars 32 of the support 3.
- the main body frame 11 is disposed between the pair of annular support frames 31.
- the main body 20 is supported by the two guide bars 32 and can be displaced in the axial direction of the holding unit 4, and can reciprocate in the cavity 43 of the holding unit 4.
- the main body 20 sends, as the curl forming means, the drive unit 70 that pulls in and sends out the belt-like member 100 from the inner peripheral side of the holding unit 4 and the belt-like member 100 that is fed out from the drive unit 70 while pressing it radially inward. And a deforming roller 80 for winding the band-shaped member 100.
- the driving unit 70 includes two sets of pinch rollers 71 each composed of a pair of an outer roller 72 and an inner roller 73 that sandwich and rotate the belt-like member 100 from both front and back surfaces. As shown in FIG. 16, as the pinch roller 71, the outer roller 72 is disposed closer to the outer periphery, and the inner roller 73 is disposed on the inner periphery of the outer roller 72.
- the drive unit 70 is provided with a drive motor 74 that rotationally drives the outer roller 72 or the inner roller 73.
- the outer roller 72 and the inner roller 73 rotate in directions opposite to each other via a reduction gear (for example, each gear of the gear mechanism 711).
- the driving force of the drive motor 74 is transmitted to the rotation shafts of the respective rollers via the gear mechanism 711, and rotates the outer roller 72 and the inner roller 73 at an appropriate speed.
- the inner surface roller 73 is made of a cylindrical body made of metal or synthetic resin, whereas the outer surface roller 72 is provided with a flange portion 721.
- the collar portion 721 is formed in a collar shape that engages with the reinforcing member 120 of the belt-shaped member 100.
- the collar portion 721 is knurled on the outer peripheral surface, contacts the outer surface side of the band-shaped member 100 (for example, the groove-shaped portion of the reinforcing member 120), and rotates without slipping.
- Each of the rollers 72 and 73 is formed such that the length in the axial direction is longer than the length corresponding to the width dimension of the belt-like member 100.
- the drive unit 70 is formed by combining an outer surface unit 75 that holds two outer rollers 72 inside and an inner surface unit 76 that holds two inner rollers 73 inside. As shown in FIGS. 16 and 17, in the outer surface unit 75, the rotating shaft of the outer roller 72 is rotatably supported by a casing 751 having rigidity through a bearing.
- the outer surface unit 75 accommodates a part of a gear constituting the gear mechanism 711 and is fixed to the rotation shaft of the outer roller 72.
- the rotating shaft of the inner surface roller 73 is rotatably supported by a rigid casing 761 via a bearing. Similar to the outer surface unit 75, the inner surface unit 76 accommodates a part of the gear constituting the gear mechanism 711 and is fixed to the rotation shaft of the inner surface roller 73. These gears mesh with each other to form a gear mechanism 711, and the outer surface roller 72 and the inner surface roller 73 are synchronously rotated.
- These two sets of pinch rollers 71 provided in the drive unit 70 can be pressed against and separated from the belt-like member 100.
- the drive unit 70 can open and close the pinch roller 71 between the pressure contact position and the separation position with respect to the belt-shaped member 100.
- the inner surface unit 76 can be opened and closed with respect to the outer surface unit 75 via a hinge shaft (not shown) on the rear surface side.
- the engagement / disengagement of the gear mechanism 711 inside the drive unit 70 is linked to the opening / closing operation of the outer surface unit 75 and the inner surface unit 76.
- a closing member 77 for holding the closed state of the outer surface unit 75 and the inner surface unit 76 is provided on the front surface of the drive unit 70.
- a connecting bolt 771 equipped with a coil spring and a retaining ring is provided as the closing member 77.
- One end portion of the connecting bolt 771 is rotatably attached to the front portion of the outer surface unit 75, and the other end portion is screwed with a nut 772 for pressing and compressing the coil spring.
- the inner surface unit 76 is provided with a receiving portion for a connecting bolt 771.
- the shaft portion of the connecting bolt 771 is fitted and inserted into the receiving portion, and the nut 772 is tightened, whereby an axial urging force is applied and closed and fixed.
- the side surface of the casing 751 is notched in the outer surface unit 75, and an introduction port 78 for drawing the belt-like member 100 into the internal pinch roller 71, and the belt-like member 100 is sent out.
- a lead-out port 79 is provided.
- the drive unit 70 can be appropriately opened and closed, and the work of disposing the belt-like member 100 between the pinch rollers 71 and removing it from the pinch rollers 71 can be easily performed. Since the two sets of pinch rollers 71 are provided in one drive unit 70, the main body 20 can be reduced in size and can be easily accommodated inside the holding unit 4.
- the belt-like member 100 is introduced into the drive unit 70 from the left side in the drawing, which is the upstream side of the drive unit 70, is sequentially fed between the pinch rollers 71, and is the downstream side of the drive unit 70. Sent to the right.
- the drive unit 70 is attached to the main body frame 11 via a mounting bracket 90.
- the other guide bar 32 to which the main body frame 11 is not connected is provided with a weight so as to face the drive unit 70, so as to balance the weight with the drive unit 70.
- the main body frame 11 is formed by integrally mounting a plate material 13 having a mounting piece 14 with a mounting bracket 90 on the front surface thereof. On the plate material 13, attachment pieces 14 are extended at two locations so as to protrude from the main body frame 11.
- the mounting bracket 90 integrally includes a first mounting plate 91 mounted on the front surface of the main body frame 11 and a second mounting plate 92 disposed in a direction orthogonal to the first mounting plate 91.
- the first mounting plate 91 is a flat plate-like member, corresponding to the mounting piece 14 located on the upstream side of the drive unit 70 and the mounting piece 14 located on the downstream side thereof.
- Long holes 911 and 912 are provided.
- the upstream long hole 911 is formed longer than the downstream long hole 912.
- These long holes 911 and 912 are arc-shaped through holes, respectively.
- the second mounting plate 92 is a plate-like member extending in the front direction of the first mounting plate 91, and includes a fixing hole 921 and a long hole 922 for fixing the drive unit 70.
- the fixing hole 921 is provided through the second mounting plate 92 at a position corresponding to the upstream side of the drive unit 70.
- the long hole 922 passes through a position corresponding to the downstream side of the drive unit 70 and is formed in an arc shape.
- the second attachment plate 92 is attached to the casing 751 of the outer surface unit 75 of the drive unit 70 with bolts and nuts via a fixing hole 921 and a long hole 922.
- the mounting position of the drive unit 70 can be changed within the range of the length of the long hole 922.
- the direction of the pinch roller 71 of the drive unit 70 can be changed by moving the drive unit 70 in the front direction along the long hole 922 around the fixed hole 921. Since the direction of the pinch roller 71 can be changed, the direction in which the belt-like member 100 is drawn into the drive unit 70 can be adjusted as appropriate.
- the first mounting plate 91 is disposed between the main body frame 11 and the drive unit 70, and is fastened to each mounting piece 14 by bolts and nuts via the long holes 911 and 912. Since the first mounting plate 91 has the long holes 911 and 912, the bolt position can be changed within the length range of the long holes 911 and 912.
- the drive unit for the main body frame 11 is obtained by moving the bolt position within the length range of the long holes 911 and 912 of the first mounting plate 91 and changing the fastening position between the first mounting plate 91 and the mounting piece 14.
- the mounting position of 70 can be changed.
- the mounting position of the drive unit 70 can also be adjusted by sliding the other bolt with one bolt as a fulcrum.
- the mounting position of the drive unit 70 shown in FIG. 16 can be easily changed to the mounting position shown in FIG.
- the drive unit 70 can adjust the attachment position with respect to the main body frame 11 in the inner and outer directions of the central cavity portion of the holding unit 4.
- the drive unit 70 may be swingable by a slide pin that is fastened to the second mounting plate 92 of the mounting bracket 90 by fastening the second mounting plate 92 and the driving unit 70 along the long hole 922. Good. With this configuration, the drive unit 70 swings following the belt member 100 that is pulled in so that the rotation shafts of the two pairs of pinch rollers 71 are substantially orthogonal to the axial direction of the belt member 100. It becomes possible.
- the deforming roller 80 as the curl forming means feeds the belt-shaped member 100 while pressing the belt-shaped member 100 sent out from the drive unit 70 in the radial direction, and winds the belt-shaped member 100.
- the deformation roller 80 is a cylindrical roller body, for example, and is provided on the downstream side of the drive unit 70.
- the deformation roller 80 is rotatable by holding the rotation shaft thereof on the roller holding portion 81, and freely rotates while contacting the outer peripheral surface of the belt-like member 100.
- the roller holding portion 81 is integrally provided at the distal end portion of the connection plate 82 disposed on the downstream side of the drive unit 70.
- the connecting plate 82 is a short strip material formed in a curved shape along the feeding direction of the strip member 100.
- the base end portion of the connection plate 82 is rotatably supported by a support member 752 protruding in the vicinity of the outlet port 79 of the drive unit 70.
- the connecting plate 82 is connected to the roller holding portion 81 at the tip end on the downstream side of the drive unit 70, and supports the deformation roller 80 via the roller holding portion 81.
- Multi-stage adjusting members 83 are disposed on both sides of the connecting plate 82 in the width direction.
- the multistage adjusting members 83 are two plate-like members disposed on both sides in the width direction of the connecting plate 82, and are disposed at a mutual interval corresponding to the axial length of the deformation roller 80.
- the multistage adjusting member 83 is joined to the outer surface of the drive unit 70 and extends toward the downstream side in the feeding direction of the belt-like member 100.
- the multistage adjustment member 83 has a size and a shape that match the rotation angle range of the connecting plate 82 that rotates about the base end.
- a large number of through holes 84 are provided at equal intervals near the tip of the connecting plate 82.
- Bolts 85 that are arranged in the width direction on the outer surface side of the connecting plate 82 and support the connecting plate 82 are selectively inserted into the through holes 84 of the multistage adjusting member 83.
- the bolt 85 is inserted through one of the through holes 84 of the multistage adjusting member 83 and the outer surface of the connecting plate 82 is supported by the bolt shaft.
- a bolt 85 is attached to the through hole 84 closer to the inner side in the radial direction among the plurality of through holes 84 of the multistage adjustment member 83, and the distal end portion of the rotatable connection plate 82 is attached. I support it.
- a bolt 85 is attached to the through hole 84 closer to the outer side in the radial direction of the multistage adjusting member 83 to support the distal end portion of the connecting plate 82.
- the connecting plate 82 is rotatably provided on the downstream side of the drive unit 70, the arrangement direction with respect to the drive unit 70 can be changed. For this reason, it is possible to change the position of the rotation shaft of the deformation roller 80 at the distal end portion of the connecting plate 82 from the outer side to the inner side of the cavity 43 of the holding unit 4. By changing the position of the rotation shaft of the deformation roller 80, the bending shape of the belt-like member 100 delivered from the drive unit 70 can be changed. Therefore, by adjusting the arrangement direction of the connecting plate 82, the spiral diameter of the curl to be applied to the belt-like member 100 can be easily changed.
- An angle adjusting bolt 87 for pressing the connecting plate 82 from the outside is disposed on the outer surface side of the connecting plate 82.
- the angle adjusting bolt 87 has a bolt shaft portion screwed to a connecting member 86 that is installed in the width direction with respect to the multistage adjusting member 83.
- the tip end portion of the bolt shaft portion can be displaced in the axial direction.
- connection plate 82 is fixed by the multistage adjustment member 83, when the spiral diameter of the winding rod of the band-shaped member 100 is further adjusted by several mm to several tens mm, the tightening amount of the angle adjustment bolt 87 is The position of the connecting plate 82 can be adjusted.
- the band member 100 has the reinforcing member 120 mounted between the ribs 111.
- the deformation roller 80 has a cylindrical outer peripheral surface and is formed to have an axial length corresponding to the width dimension of the belt-like member 100.
- the tip end portion of the rib 111 is in contact with the outer peripheral surface of the deformation roller 80
- the convex portion of the reinforcing member 120 is in contact with the outer peripheral surface of the deformation roller 80.
- the deformation roller 80 may be a roller provided with a bowl-shaped large-diameter portion 801 and a cylindrical small-diameter portion 802 as shown in FIG. In this case, the deformation roller 80 rotates with the large-diameter portion 801 engaged with the concave portion of the reinforcing member 120, and is deformed in a spiral shape while feeding the belt-shaped member 100. Since the large diameter portion 801 positions the reinforcing member 120, it is possible to prevent the strip member 100 from being shifted in the width direction and to regulate the feeding direction of the strip member 100 in a certain direction.
- the deformation roller 80 may be provided so as to be slidable in the axial direction along its rotation axis.
- the deformation roller 80 has a bowl-shaped large-diameter portion 801 and a cylindrical small-diameter portion 802 that engage with the reinforcing member 120, and is externally attached to the rotating shaft 803 via a bearing 804.
- the deformation roller 80 rotates in contact with the belt-like member 100 with certainty, and the winding roller 100 is curled while allowing the belt-like member 100 to be displaced in the width direction. Therefore, an excessive force does not act on the band-shaped member 100, and the band-shaped member 100 can be prevented from being twisted or damaged.
- the curl forming apparatus 1 can be used in a state of being built in the holding unit 4 as in the first embodiment. That is, as shown in FIGS. 14 and 15, the support 3 of the curl forming apparatus 1 is attached to the holding unit 4, and the main body 20 is disposed in the cavity 43 of the holding unit 4.
- the belt-like member 100 is pulled out from the inner peripheral side of the holding unit 4 and passed through the drive unit 70.
- the pinch roller 71 is rotationally driven to pull in the belt-like member 100 and send it out to the connecting plate 82.
- the connecting plate 82 guides the distal end portion of the belt-like member 100 to the deformation roller 80.
- the strip member 100 is sequentially pulled while the position where the belt member 100 is pulled into the drive unit 70 is reciprocally displaced in the axial direction of the hollow portion 43 of the holding unit 4.
- the main body 20 of the curl forming apparatus 1 draws the belt-like member 100 at an appropriate position while being displaced in the axial direction inside the cavity 43 of the holding unit 4.
- Unreasonable force does not act on the band-shaped member 100 taken into the curl forming apparatus 1, the band-shaped member 100 can be smoothly guided to the main body portion 20, and is deformed into a spiral bent shape by the deformation roller 80. Can do.
- the deformation roller 80 can be adjusted in accordance with the spiral diameter of the spiral shape to be applied to the belt-shaped member 100. By changing the position, it can be deformed by one apparatus into bent shapes having various spiral diameters.
- the main body 20 reciprocates in the axial direction inside the cavity 43 of the holding unit 4 in the process of pulling the belt-shaped member 100. Following the position of the belt-like member 100 held by the holding unit 4, the main body portion 20 moves in the axial direction along the guide bar 32, and the winding position of the belt-like member 100 reciprocates in the axial direction. If it has been done, the belt-like member 100 is retracted while reciprocally moving in the axial direction. For this reason, the belt-like member 100 can be continuously drawn into the main body 20.
- the amount of winding of the belt-like member 100 stored in the holding unit 4 decreases.
- belt-shaped member 100 may loosen or sag, or the approach angle to the pinch roller 71 may change.
- the arrangement of the drive unit 70 is changed following the belt-shaped member 100 to be pulled in, and the rotation axes of the two sets of pinch rollers 71 are adjusted so as to be substantially orthogonal to the axial direction of the belt-shaped member 100. can do. That is, the arrangement form of the drive unit 70 as shown in FIG. 17 can be freely changed like the arrangement form of the drive unit 70 as shown in FIG.
- the belt-like member 100 can be continuously and smoothly pulled out from the inner peripheral side of the holding unit 4 and guided to the drive unit 70 of the main body 20, so that a spiral winding rod can be stably formed. Become.
- the belt-like member 100 that has passed through the deforming roller 80 is guided from the holding unit 4 to the starting side manhole 61 with a desired spiral winding rod attached, and is formed into a tubular shape by the pipe making machine 5 in the existing pipe 6. Is done.
- the curl forming means provided in the main body portion 20 is not limited to the above-described configuration, and includes a means for attaching a spiral curl to the belt-like member 100. Any configuration may be used.
- the holding unit 4 is not limited to a rotating drum body as illustrated, but may have any form as long as the belt-like member 100 is smoothly fed out or sent out while holding the belt-like member 100. Also good.
- the belt-like member 100 on which the reinforcing material 120 is mounted is not limited to the illustrated one, and may be any other material having different side edge shapes, rib shapes, or reinforcing material shapes.
- the belt-like member 200 may be configured to be joined by a connector 230.
- the belt-like member 200 includes a reinforcing member 210 between the ribs 201, and bonding concave portions 202 are formed on both side edges.
- the connector 230 includes a pair of joining convex portions 231 that can be joined across the joining concave portions 202, 202 of the adjacent band-shaped member 200, and is fitted into these joining concave portions 202. Even with such a belt-shaped member 200, a spiral wound kite can be continuously formed by the folding kite forming apparatus 1, and a high-strength rehabilitating tube 130 can be accurately formed.
- the present invention can be suitably used in a construction method in which existing pipes such as aging sewer pipes, water pipes, agricultural water pipes and gas pipes are rehabilitated using a band member with a reinforcing material.
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Abstract
Description
巻癖形成装置1は、既設管6の更生に際し、帯状部材100に対して、保持ユニット4の内側で螺旋状の巻癖をつけるのに用いられる。帯状部材100は、螺旋状に巻き重ねた状態で保持ユニット4に収容されている。螺旋状の巻癖は、補強材120が装着されて剛性が高い帯状部材100において形成することが求められる。この巻癖の形成は、更生管130を製管する前段階で行う。
図8および図9に示すように、帯状部材100は、長尺体であり、帯状部材本体110と補強材120とを有する。帯状部材本体110は、例えば、硬質塩化ビニル、ポリエチレン、ポリプロピレンなどの可撓性を有する合成樹脂材料を押出成形して形成され、断面略T字状のリブ111を備える。なお、図8および図9においては、図面を見やすくするために、帯状部材100には断面を示すハッチングを省略して記載している。
図10に示すように、保持ユニット4は、長尺の帯状部材100を保持しており、回転しながら帯状部材100を繰り出すことが可能とされている。
図1~図5に示すように、巻癖形成装置1は、巻癖形成手段を備えた本体部2と、本体部2を保持ユニット4に支持する支持体3とを備えている。
次に、上述の巻癖形成装置1を用いて行う既設管6の更生方法について説明する。
実施形態2係る巻癖形成装置1は、巻癖形成手段を備えた本体部20と、本体部20を帯状部材100の保持ユニット4に支持する支持体3とを備えている。図14および図15に示すように、本体部20は、保持ユニット4の空洞部43内に配設される本体フレーム11と、本体フレーム11に取り付けられた巻癖形成手段とを有する。支持体3および保持ユニット4は、前記実施形態1と同様の構成を有するので、同符号により示して詳細な説明を省略する。
2、20 本体部
11、21 本体フレーム
22 本体保持部
26 駆動モータ
3 支持体
31 支持フレーム
32 ガイドバー
33 支承部
34 ローラ
4 保持ユニット
41 鍔フレーム
411 円形開口
412 レール体
42 連結材
43 空洞部
5 製管機
6 既設管
70 駆動ユニット
80 変形ローラ
82 連結プレート
90 取付ブラケット
100 帯状部材
110 帯状部材本体
120 補強材
130 更生管
Claims (7)
- 管路更生用の帯状部材を、螺旋状の曲げ形状に変形させる巻癖形成装置であって、
帯状部材に変形を加える本体部と、
前記本体部を帯状部材の保持ユニットに支持する支持体とを有し、
前記帯状部材は、長手方向に沿って補強材が備えられ、保持ユニットの内側に螺旋状に巻き重ねられて、この保持ユニットの軸方向に空洞部を形成しており、
前記本体部は前記空洞部に配設されて、保持ユニットの内側で帯状部材を引き込んで変形させ、
前記支持体は、保持ユニットに対して回転自在に取り付けられ、前記本体部が帯状部材を引き込むのに連動して軸心回りに回転することを特徴とする巻癖形成装置。 - 請求項1に記載の巻癖形成装置であって、
前記保持ユニットは、円形開口を有する一対の回転フレームと、これらの回転フレーム間に軸方向に設けられた複数の連結材とを備え、前記帯状部材は該連結材の内側に保持され、
前記支持体は、前記回転フレームの円形開口の縁部に係合する複数の支持ローラを備えることを特徴とする巻癖形成装置。 - 請求項1または2に記載の巻癖形成装置であって、
前記本体部は前記空洞部内で軸方向に変位自在に支持され、帯状部材の引き込み位置が軸方向に移動することを特徴とする巻癖形成装置。 - 請求項3に記載の巻癖形成装置であって、
前記支持体は、前記空洞部に配設され軸方向に延びる互いに平行な複数本のガイドバーを備え、前記本体部は前記ガイドバーに沿って保持ユニットの軸方向に往復移動することを特徴とする巻癖形成装置。 - 管路更生用の帯状部材を、螺旋状の曲げ形状に変形させる巻癖形成装置であって、
帯状部材に変形を加える本体部と、
前記本体部を帯状部材の保持ユニットに支持する支持体とを有し、
前記帯状部材は、長手方向に沿って補強材が備えられ、保持ユニットの内側に螺旋状に巻き重ねられて、この保持ユニットの軸方向に空洞部を形成しており、
前記本体部は、保持ユニットの内側から帯状部材を引き込んで送り出す駆動ユニットと、駆動ユニットが送り出した帯状部材を径方向内側へ押圧しながら送り、帯状部材に巻癖をつける変形ローラとを備え、
前記本体部は前記空洞部に配設されて、保持ユニットの内側で帯状部材を引き込んで変形させ、
前記支持体は、保持ユニットに対して回転自在に取り付けられ、前記本体部が帯状部材を引き込むのに連動して保持ユニットの軸心回りに回転することを特徴とする巻癖形成装置。 - 請求項5に記載の巻癖形成装置であって、
前記変形ローラは、前記駆動ユニットに対する配設位置を調整可能とされていることを特徴とする巻癖形成装置。 - 請求項5または6に記載の巻癖形成装置であって、
前記駆動ユニットの下流側には、帯状部材を前記変形ローラへ導く曲面プレートが設けられ、前記駆動ユニットから変形ローラまでの経路で帯状部材を変形させることを特徴とする巻癖形成装置。
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US15/315,546 US10744702B2 (en) | 2014-06-04 | 2015-03-31 | Apparatus for forming curls |
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JP7048330B2 (ja) | 2018-01-23 | 2022-04-05 | 積水化学工業株式会社 | 帯状部材 |
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JPWO2015186416A1 (ja) | 2017-04-20 |
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