JP3927591B2 - Winding device - Google Patents

Description

  The present invention relates to a winding device for winding a cut strip-shaped member, for example, a web for a photosensitive material (film).

  Recently, a winding device for winding a belt-like member having a thickness as thin as 10 to 20 μm, such as a 1/2 inch or 8 mm magnetic tape, has a tension fluctuation rate of ± 5% or less. Things are in practical use.

  However, a winding device for winding a belt-shaped member having a thickness as thick as 100 to 150 μm, such as a web for a photographic material (film), has yet to be developed with a low tension fluctuation rate. The current situation is not.

  For example, as shown in FIG. 13, a conventional film winding apparatus 300 is provided with a drive shaft 304 having an air tube 302 provided therein, and a drive shaft 304 that is rotatable with respect to the drive shaft 304 via bearings 306 and 308. And a core 312 around which the film 310 is wound on the outer peripheral surface, and in particular, a displacement corresponding to the core 312 of the air tube 302 with a felt 314 attached to the tip. A transmission unit 316 is provided.

  The air tube 302 is expanded by injecting compressed air into the air tube 302, and the displacement transmission unit 316 is displaced outward, so that the felt 314 attached to the tip of the displacement transmission unit 316 is attached to the inner wall of the core 312. Press and slide on.

  That is, the conventional winding device 300 is configured to use the torque generated when the felt 314 slides with respect to the winding core 312 as a tension when winding the film 310.

  In this conventional winding device 300, the tension is not stable, and even if the tension is maintained in a good condition, the tension fluctuation rate can be reduced only to about ± 15%. In principle, a large tension cannot be obtained. The tension is about 1 kg at the maximum due to heat generation. When a tension higher than this is obtained, a new problem arises that the film 310 is deformed by heat generation. Further, since the air tube 302 is mounted in the drive shaft 304 and the felt 314 is attached to the tip of the displacement transmission portion 316, the structure is complicated and skill is required for maintenance.

JP-A-8-2445020 Japanese Patent Laid-Open No. 3-95056

  The present invention has been made in consideration of such problems, and in the case of winding a wide belt-like member having a thickness of 100 to 150 μm, such as a photographic photosensitive material web (film), It is an object of the present invention to provide a winding device that can reduce the tension fluctuation rate to ± 5% or less, can easily and stably obtain a large tension, and can be easily maintained.

A winding device according to a first aspect of the present invention is attached to a drive shaft having a ring portion, and is rotatably attached to the drive shaft by a first bearing and a second bearing so as to cover the ring portion , and A holder around which a belt-like member is wound around the outer peripheral surface;
Of the outer peripheral surface of the ring portion, the ring portion has a ring-shaped conductor that is crimped between the first bearing and the second bearing, and the inner peripheral surface of the holder is configured by a plurality of magnets. magnet array is disposed, said magnet array is characterized in that opposite the ring-shaped conductor.

  Thus, by rotating the drive shaft, the ring-shaped conductor cuts the magnetic flux generated between the magnet arrays, and an eddy current is generated in the ring-shaped conductor. The secondary magnetic flux and the original magnetic flux are attracted to each other, and for example, a torque substantially proportional to the slip rotation speed can be obtained.

The winding device according to the second aspect of the present invention is rotatable by a drive shaft having a torque transmission portion, and a first bearing and a second bearing provided adjacent to each other at a central portion of the torque transmission portion. A holder provided with a belt-like member wound around the outer peripheral surface, a first support member fixed adjacent to the first bearing among the outer peripheral surfaces of the torque transmitting unit, and the torque transmitting unit. Of the outer peripheral surface, a second support member fixed adjacent to the second bearing, a ring-shaped first conductor crimped to the outer peripheral surface of the first support member, and an outer periphery of the second support member A ring-shaped second conductor that is crimped to a surface, and a magnet array composed of a plurality of magnets is arranged on the inner peripheral surface of the holder via a magnet holder, characterized in that it faces the ring-shaped conductor To.

  Thus, by rotating the drive shaft, the ring-shaped conductor cuts the magnetic flux generated between the magnet arrays, and an eddy current is generated in the ring-shaped conductor. The secondary magnetic flux and the original magnetic flux are attracted to each other, and for example, a torque substantially proportional to the slip rotation speed can be obtained.

  In the first and second aspects of the present invention, the number of magnets arranged on the inner peripheral surface of the holder is increased as much as possible, and a plurality of magnet rows are formed by the magnets. It is also possible to change the density of magnetic flux generated between the magnet arrays.

  Further, when the magnets are arranged on the holder, it is more preferable to arrange them at an equal pitch.

  Further, it is more preferable to measure the strength of the magnetic force for all the magnets before arranging the magnets in the holder and to alternately arrange the strong and weak magnets.

  In these inventions, torque can be generated in a non-contact manner with respect to the holder. Therefore, a belt-like member having a large thickness of 100 to 150 μm and a wide width, such as a photographic photosensitive material web (film), is used. In winding, the tension variation rate can be ± 5% or less, and a large tension can be obtained stably and easily.

  In addition, since there is no contact portion such as a felt in the structure and there is no need to install an air tube in the drive shaft, it is not necessary to consider the life due to wear or the like of the constituent members, and maintenance is facilitated.

  In the first and second aspects of the present invention, it is preferable to provide a cooling means for cooling at least the drive shaft and the holder.

  That is, when winding a strip-like member having a thin thickness of 10 to 20 μm and a narrow width, since the tension is small, the amount of heat generated is small and natural cooling with the system is sufficient. When a wide belt-like member having a thickness of 100 to 150 μm, such as a material web (film), is taken up, a large tension is required and the amount of heat generation increases, so that it is left as it is. If it does, there exists a possibility that a strip | belt-shaped member may deform | transform by heat_generation | fever.

  However, in the present invention, since the cooling means is provided, the heat generated at the time of winding can be effectively cooled, and deformation of the belt-like member due to heat generation can be avoided.

  In the first and second aspects of the present invention, the driving shaft is hollow, and cooling air is introduced as cooling means from outside the holder toward the inside of the holder and the hollow portion of the driving shaft. You may make it comprise and provide an introduction means.

  Moreover, in the said structure, you may make it comprise and provide the cooling fin provided in the surface of the said holder as said cooling means.

  Further, as the cooling air introducing means, a first cooling passage for guiding the cooling air to the holder, and a portion of the drive shaft included in the holder, the guide led to the holder A second cooling passage for guiding the cooling air into the hollow portion of the drive shaft may be provided.

  As described above, according to the winding device according to the present invention, when winding a wide belt-like member having a thickness of 100 to 150 μm, such as a photographic photosensitive material web (film), The tension fluctuation rate can be ± 5% or less, and a large tension can be easily obtained. In addition, maintenance becomes easy.

  Hereinafter, the winding device according to the present invention will be described with reference to FIGS. 1 to 12, for example, three embodiments applied to winding of a web (film) for a photographic material.

  First, a film manufacturing apparatus 10 to which the winding apparatus according to the first to third embodiments is applied will be described with reference to FIG.

  As shown in FIG. 1, a large number of manufacturing apparatuses 10 are arranged on a supply shaft 18 that is rotated by a motor 12 and feeds a web 16 from a roll-shaped web raw material 14, and on a conveyance path of the web 16 before cutting. A conveying roller 20 and a rotary blade 22, and a cutting section 24 that continuously cuts the web 16 to a predetermined width; a first suction roller 26 and a second suction roller 28 that suck and feed the web 16; A winding device 100 (140, 180) according to the first to third embodiments for winding the web 16a having a narrow width (for example, the width of a movie film) cut by the cutting unit 24 is configured. Then, the web 16 fed out from the roll-shaped web original 14 rotated by the supply shaft 18 passes between the supply shaft 18 and the cutting portion 24 via the transport rollers 20 arranged on the transport path. Reaches the first suction roller 26.

  When the web 16 comes into contact with the first suction roller 26, the web 16 is attracted to the first suction roller 26 by the intake action, and the web 16 is sent to the cutting unit 24 by rotating the first suction roller 26. The uncut web 16 that has reached the cutting section 24 is cut by the rotary blade 22 into a plurality of narrow webs 16a.

  The narrow web 16 a after cutting reaches the second suction roller 28 disposed between the cutting unit 24 and the winding device 100 through the conveying roller 20. Again, the narrow web 16a after cutting is fed in the direction of the winding device 100 while being adsorbed by the second suction roller 28. Then, after passing through several conveying rollers 20, the cut narrow web 16 a is wound around each winding device 100.

  Next, the winding device 100 according to the first embodiment will be described.

  As shown in FIG. 2, the winding device 100 according to the first embodiment is provided rotatably with respect to the drive shaft 104 so as to cover the drive shaft 104 having the flange portion 102 and the flange portion 102. And a holder 106 around which a narrow web 16a is wound around the outer peripheral surface.

  The drive shaft 104 has a hollow portion 118 extending in the axial direction, and the flange portion 102 provided on the drive shaft 104 is made of metal. For example, the central portion is a steel plate and the peripheral portion is copper or copper. It is composed of an alloy.

  The holder 106 includes a first torque adjusting plate 110 that is rotatably attached to the drive shaft 104 by a first bearing 108, and a second that is rotatably attached to the drive shaft 104 by a second bearing 112. The torque adjusting plate 114 and means 116 for fixing the first torque adjusting plate 110 and the second torque adjusting plate 114 at arbitrary relative positions, and the core 116 around which the narrow web 16a is actually wound. And is configured.

  The first torque adjusting plate 110 is configured such that a plate surface thereof is arranged to face one surface of the flange portion 102, and a plurality of permanent magnets 120 are arranged at an equal pitch on the plate surface, and the second torque is adjusted. The adjustment plate 114 is configured such that the plate surface thereof is disposed to face the other surface of the flange portion 102, and a plurality of permanent magnets 122 are arranged at an equal pitch on the plate surface. The first torque adjustment plate 110 and the second torque adjustment plate 114 are supported by the holder 106 so that the distance L between the flange portion 102 and the flange portion 102 can be arbitrarily changed.

  Furthermore, the winding device 100 according to the first embodiment has a cooling means 124 for cooling at least the drive shaft 104 and the holder 106.

  The cooling means 124 is provided in the first cooling hole 126 provided on each plate surface of the first torque adjusting plate 110 and the second torque adjusting plate 114 and a portion of the drive shaft 104 included in the holder 106. The second cooling hole 128 is provided, and an intake device (not shown) installed at the end of the drive shaft 104 is provided.

  By operating the intake device, external cooling air is guided into the holder 106 through the first cooling hole 126, and the cooling air guided into the holder 106 is driven through the second cooling hole 128 to the drive shaft 104. The hollow portion 118 is guided.

  That is, the cooling means 124 functions to introduce cooling air from the outside of the holder 106 toward the inside of the holder 106 and the hollow portion 118 of the drive shaft 104.

  The winding device 100 according to the first embodiment is basically configured as described above. Next, the function and effect will be described.

  First, the density of magnetic flux generated on the first torque adjustment plate 110 and the second torque adjustment plate 114 is changed by appropriately changing the relative position between the first torque adjustment plate 110 and the second torque adjustment plate 114. Become.

  In such a case, when the drive shaft 104 is driven to rotate, the flange portion 102 positioned between the first torque adjustment plate 110 and the second torque adjustment plate 114 causes the first torque adjustment plate 110 and the second torque adjustment plate to move. 114, the eddy current is generated in the flange portion 102, and the secondary magnetic flux and the original magnetic flux are attracted to each other. For example, the torque is approximately proportional to the slip rotation speed. Is obtained. Here, the slip rotation speed indicates a difference between the rotation speed of the drive shaft 104 and the rotation speed of the holder 106.

  In the winding device 100 according to the first embodiment, since the torque can be generated in a non-contact manner with respect to the holder 106, the thickness is 100 to 100 like a photographic photosensitive material web (film). Even when winding a belt-like member that is as thick as 150 μm and wide, for example, the tension fluctuation rate can be reduced to ± 5% or less with respect to a tension of 2 kg, and a large tension can be easily and stably. Can be obtained. For example, a tension of about 500 g to 3 kg can be obtained.

  Thus, since a stable winding tension can be obtained, the amount of deviation in the width direction in the wound state can be reduced. For example, the amount of deviation of 3.0 mm can be reduced to 0.5 to 1.0 mm. Can be reduced to a degree. As a result, the appearance of the wound state becomes good, and NG on the appearance can be reduced. It is also suitable for winding a relatively thick narrow web 16a having a thickness of 50 to 300 μm.

  The torque is controlled by the magnetic field strengths of the permanent magnets 120 and 122 disposed on the first torque adjusting plate 110 and the second torque adjusting plate 114, the first torque adjusting plate 110, the second torque adjusting plate 114, and the flange portion 102. The distance between the first torque adjusting plate 110 and the second torque adjusting plate 114 and the speed of the flange portion 102 that cuts off the magnetic flux generated between the flange portion 102, and by appropriately changing these parameters, a desired torque can be obtained. Can be easily obtained.

  Further, in the first embodiment, there is no contact portion such as felt due to its structure, and it is not necessary to install an air tube in the drive shaft 104, so it is necessary to consider the lifetime due to wear of the constituent members. And maintenance becomes easy.

  By the way, when winding a belt-like member having a thin thickness of 10 to 20 μm and a narrow width, since the tension can be small, the amount of heat generated is small, and natural cooling with the system is sufficient. When a belt-shaped member having a large thickness of 100 to 150 μm, such as a material web (film), is wound up, the amount of heat generated increases. There is a possibility that the web 16a having the width may be deformed.

  However, since the winding device 100 according to the first embodiment has the cooling means 124, the heat generated during winding can be effectively cooled, and the narrow width due to heat generation is reduced. The deformation of the web 16a can be avoided.

  In particular, in the first embodiment, as the cooling means 124, the first cooling hole 126 is provided in the first torque adjusting plate 110 and the second torque adjusting plate 114, and the second cooling hole 128 is provided in the drive shaft 104. Thus, since cooling air is introduced from the outside of the holder 106 toward the inside of the holder 106 and the hollow portion 118 of the drive shaft 104, for example, dust mixed in the holder 106 is removed by the cooling air. It is possible to effectively prevent wear or the like due to dust or the like in the rotational drive part.

  Further, in the production of the film, it is preferable to eliminate the variation in torque among the respective winding devices 100 because the plurality of cut thin webs 16a are wound by the corresponding winding devices 100. Therefore, in the first embodiment, the slip rotation speed N is kept constant, and the distance L between the first torque adjustment plate 110 and the second torque adjustment plate 114 and the flange portion 102 is made constant. Thereby, the dispersion | variation in the torque between each winding apparatus 100 can be made small about 2-3%.

  In the first embodiment, two bearings 108 and 112 are used for one holder 106. In order to reduce the variation in torque between the bearings 108 and 112, each bearing 108 is used. And 112 are washed once, degreased, and several drops of oil having a viscosity of SAE 20-30 are injected.

  As the cooling means 124, the first cooling hole 126 and the second cooling hole 128 described above may be provided, and as shown in FIG. 3, a cooling fin 130 may be provided on the surface of the holder 106. The first cooling hole 126, the second cooling hole 128, and the cooling fin 130 may be combined.

  When the cooling fin 130 is provided, it is desirable to install a nozzle that blows air toward the cooling fin 130. Thus, since the cooling effect can be further enhanced by providing the cooling fins 130, it is possible to wind up a wider and / or thicker web.

  By the way, there is an ideal tension curve for winding the web 16a. Normally, when the web 16a is wound up by the winding device 100, the winding diameter of the web 16a around the holder 106 increases with the winding, and the rotation speed of the holder 106 decreases accordingly. Along with this, as shown in FIG. 8, the tension curve (curve a) may be obtained and deviate from the ideal tension curve (curve b). Therefore, the tension curve (curve a) can be brought close to the ideal tension curve (curve b) by increasing the rotational speed of the drive shaft 104, which is normally constant, by about 20 to 30%.

  Also, the ideal tension curve (curve b) varies depending on the material and dimensions of the belt-like member wound around the holder 106, but by appropriately selecting the rotational speed of the drive shaft 104 according to the winding diameter as described above, It is possible to approach the most optimal tension curve for winding the belt-shaped member.

  Next, the winding device 140 according to the second embodiment will be described with reference to FIGS. 4 and 5. 4 is a longitudinal sectional view (a sectional view taken along line IV-IV in FIG. 5) showing the configuration of the winding device 140 according to the second embodiment. FIG. 5 is a sectional view taken along line VV in FIG. It is sectional drawing.

  As shown in FIGS. 4 and 5, the winding device 140 according to the second embodiment has a drive shaft 142 and a fixed width in the axial direction of the drive shaft 142 and is fixed to the drive shaft 142. A metal ring portion 144 and a substantially cylindrical shape that is rotatably provided with respect to the drive shaft 142 so as to cover the ring portion 144 and in which a narrow web 16a is wound around the outer peripheral surface. Holder 146.

  The drive shaft 142 has a hollow portion 148 extending in the axial direction, and a seamless ring-shaped copper plate 150 is pressure-bonded to the outer surface of the ring portion 144 fixed to the drive shaft 142. .

  A plurality of permanent magnets 154 are disposed on the inner surface 152 of the holder 146 facing the ring portion 144. The plurality of permanent magnets 154 constitute permanent magnet rows 156 and 158 by being arranged at an equal pitch. Therefore, the permanent magnet rows 156 and 158 and the ring-shaped copper plate 150 that is pressure-bonded to the outer surface of the ring portion 144 are arranged to face each other in the radial direction of the drive shaft 142. .

  The holder 146 is rotatably attached to the drive shaft 142 by a first bearing 160 and a second bearing 162, and has a winding core 164 on which a narrow web 16a is actually wound. It is configured.

  Further, the second embodiment also has cooling means 166 for cooling at least the drive shaft 142 and the holder 146, as in the first embodiment.

  The cooling means 166 includes a first cooling hole 168 provided in the holder 146, a second cooling hole 170 provided in the ring part 144, and the ring part 144 of the drive shaft 142. And a third cooling hole 172 provided in a portion covered with the air-cooling device, and an intake device (not shown) installed at the end of the drive shaft 142.

  By operating the intake device, cooling air from the outside is guided into the holder 146 through the first cooling hole 168, and the cooling air guided into the holder 146 is connected to the second cooling hole 170 and the first cooling hole 170. 3 is guided into the hollow portion 148 of the drive shaft 142 through the cooling hole 172.

  That is, the cooling means 166 functions to introduce cooling air from the outside of the holder 146 toward the inside of the holder 146 and the hollow portion 148 of the drive shaft 142.

  The winding device 140 according to the second embodiment is basically configured as described above. Next, the function and effect will be described.

  Magnetic flux is generated between the permanent magnet rows 156 and 158 arranged on the inner surface 152 of the holder 146 by the action of mutual magnetic force.

  In this case, when the drive shaft 142 is driven to rotate, the ring portion 144 fixed to the drive shaft 142 rotates in accordance with the drive shaft 142 and is bonded to the ring portion 144 by a ring-shaped copper plate 150. However, the magnetic flux generated between the permanent magnet arrays 156 and 158 arranged on the inner surface 152 of the holder 146 is cut off, and an eddy current is generated in the ring portion 144. The next magnetic flux and the original magnetic flux are attracted to each other, and a torque approximately proportional to the slip rotational speed is obtained (the slip rotational speed is the difference between the rotational speeds of the drive shaft 142 and the holder 146 as described above).

  In the winding device 140 according to the second embodiment, since the torque can be generated in a non-contact manner with respect to the holder 146 as in the first embodiment, the web for photographic material (film) ), Etc., even when a belt-like member having a large thickness of 100 to 150 μm and a wide width is wound, the tension fluctuation rate can be reduced to ± 5% or less, and a large tension can be easily and stably obtained. Can be obtained.

  As described above, since a stable winding tension can be obtained, the deviation (winding shape defect) in the width (slit width) direction of the wound state can be reduced, for example, 2.0 to 5.0 mm. The amount of deviation can be reduced to about 0.5 to 1.0 mm. As a result, edge rubbing between the webs after winding can be almost eliminated, and there is an effect that edge damage can be reduced with little damage.

  Moreover, it is not limited to a web for photographic material (film), and is suitable for winding a relatively thick and wide belt-like member (for example, paper, cloth, etc.) having a thickness of 50 to 300 μm and a width of about 15 to 70 mm. Can be operated to.

  By the way, the winding device 140 according to the second embodiment has a cooling means 166, and the cooling means 166 has an inside of the holder 146 and a hollow portion 148 of the drive shaft 142 from the outside of the holder 146. It has the function to introduce cooling air toward

  Therefore, the holder 146 is attached by pressing the ring-shaped copper plate 150, which is a heat source of heat generated during winding, to the ring portion 144 fixed to the drive shaft 142, which is the final portion of cooling. The cooling air that is cooled almost without being affected by heat and heated by the ring-shaped copper plate 150 that is a heat generation source is discharged to the outside without affecting other members, so that the cooling effect is further enhanced. The deformation of the web 16a due to heat generation can be avoided.

  Further, by increasing the number of permanent magnets 154 arranged at equal pitches in each of the permanent magnet rows 156, 158, the density of magnetic flux generated between the permanent magnet rows 156, 158 is increased. Therefore, the slip rotation speed is reduced, and there is an effect that heat generation by the ring-shaped copper plate 150 can be suppressed.

  Next, a winding device 180 according to a third embodiment will be described with reference to FIGS. 6 is a longitudinal sectional view (sectional view taken along line VI-VI in FIG. 7) showing the configuration of the winding device 180 according to the third embodiment, and FIG. 7 is viewed from the direction of arrow VII in FIG. It is a side view.

  As shown in FIGS. 6 and 7, the winding device 180 according to the third embodiment includes a drive shaft 182 having a hollow portion 220 extending in the axial direction, and the drive shaft fixed to the drive shaft 182. A torque transmission unit 184 that transmits torque by rotating the 182; metal support members 186 and 188 fixed to the torque transmission unit 184; and the first bearing 190 and the second And a holder 194 that is rotatably mounted via a bearing 192.

  The holder 194 has a winding core 224 around which the actual narrow web 16a is wound.

  The support members 186 and 188 are metal annular members having a hollow portion 222, and seamless ring-shaped copper plates 196 and 198 are respectively crimped to the side not fixed to the torque transmission portion 184. Yes. The holder 194 has circumferential surfaces 200 and 202, and a plurality of permanent magnets 208 are arranged on the circumferential surfaces 200 and 202 via magnet holders 204 and 206. The plurality of permanent magnets 208 constitute permanent magnet arrays 210 and 212 by being arranged at an equal pitch.

  The ring-shaped copper plates 196 and 198 and the permanent magnet arrays 210 and 212 are arranged to face each other in the radial direction of the drive shaft 182.

  Further, the third embodiment also has a cooling means 214 for cooling at least the drive shaft 182 and the holder 194 as in the first and second embodiments. ing.

  The cooling means 214 includes a cooling hole 218 provided through the torque transmitting portion 184 and the drive shaft 182, and an unillustrated intake device installed at the end of the drive shaft 182. It is configured.

  By operating the air intake device, through the gap between the copper plates 196, 198 that are pressure-bonded to the metal support members 186, 188 and the permanent magnet rows 210, 212, and the gap between the permanent magnets 208, Cooling air from the outside is guided to the holder 194, and the cooling air guided to the holder 194 passes through the cooling hole 218 and is guided into the hollow portion 220 of the drive shaft 182. In addition, cooling air is guided from the outside to the holder 194 through the hollow portions 222 of the support members 186 and 188, and the cooling air guided to the holder 194 passes through the cooling hole 218 and the above-described driving shaft 182. It will be guided into the hollow part 220.

  In other words, the cooling means 214 functions to introduce cooling air from the outside of the holder 194 into the holder 194 toward the hollow portion 220 of the drive shaft 182.

  The winding device 180 according to the third embodiment is basically configured as described above. Next, the function and effect will be described.

  By rotating the drive shaft 182, the torque transmission portion 184 fixed to the drive shaft 182 rotates in accordance with the drive shaft 182 and is supported by the support members 186 and 188 fixed to the torque transmission portion 184. The copper plates 196 and 198 that are pressure-bonded to each other cut the magnetic flux generated by the permanent magnets 208 constituting the permanent magnet arrays 210 and 212.

  Therefore, an eddy current is generated in the support members 186 and 188, and the secondary magnetic flux and the original magnetic flux due to the eddy current are attracted to each other, and a torque substantially proportional to the slip rotation speed is obtained.

  Since the winding device 180 according to the third embodiment also includes the cooling means 214, the heat generated during winding can be effectively cooled.

  The drive shaft 182, the torque transmission unit 184, the support members 186 and 188, and the ring-shaped copper plates 196 and 198 are integrally held, and the drive shaft 182 and the torque transmission unit 184 are integrated. Since the support members 186 and 188 and the copper plates 196 and 198 are all made of metal, the heat generated by the copper plates 196 and 198 which is a heat generation source of heat generated during winding is generated by the support member 186. 188 and the torque transmission portion 184 are easily transmitted to the drive shaft 182 to further improve the cooling efficiency.

  Further, in the third embodiment, as in the first embodiment, two bearings 190 and 192 are used for one holder 194, but the torque between these bearings 190 and 192 is reduced. In order to reduce the variation, the bearings 190 and 192 are washed once, degreased, and several drops of oil having a viscosity of SAE 20-30 are injected.

  Further, in the third embodiment, before the plurality of permanent magnets 208 are arranged at equal pitches on the circumferential surfaces 200 and 202 of the holder 194 via the magnet holders 204 and 206, all the permanent magnets 208 are arranged. Measure the strength of magnetic force.

  Thereafter, when the permanent magnet 208 is arranged on the holder 194 via the magnet holders 204 and 206 to form the permanent magnet arrays 210 and 212, the permanent magnets 208 having a strong magnetic force and a weak one among the permanent magnets 208. Are arranged in an alternating manner so that the strength of the magnetic force of the permanent magnet arrays 210 and 212 is made uniform (a large number of permanent magnets are arranged as much as possible).

  As a result, the balance of the magnetic force can be made uniform and the magnetic flux density can be increased, so that the slip rotation speed is reduced and the amount of generated heat can be reduced.

  The same applies to the second embodiment described above.

  The holder 194 is preferably configured with a stopper for preventing unnecessary movement of the winding core 224 in the axial direction and a pin for blocking unnecessary movement of the winding core 224 in the circumferential direction.

  Here, an experimental example according to the first embodiment is shown. In this experimental example, each tension variation rate is observed in the example and the comparative example. Both the example and the comparative example have the same configuration as the winding device 100 according to the first embodiment, but the example operates the cooling unit 124 (operates the intake device), and the comparative example uses the cooling unit. 124 is not operated.

  First, with respect to the embodiment, several measurement positions are determined, and the tension at each measurement position when the slip rotation speed (the difference between the rotation speed of the drive shaft 104 and the rotation speed of the holder 106) is gradually increased is determined. Changes were measured. The measurement results are shown in FIG.

  The measurement positions are φ150 mm position (− □ −), φ200 mm position (− ■ −), φ250 mm position (−Δ−), and φ300 mm position (− × −). From the measurement results of FIG. 9, it can be seen that each measurement position has a substantially proportional relationship with respect to the slip rotation speed.

  And in the comparative example (no cooling), the fluctuation | variation of the tension with the passage of time at the position of φ200 mm and the change of the temperature of the holder 106 were observed. In this case, the slip rotation speed was fixed at 50 rpm. The result is shown in FIG. In FIG. 10, a curve a (−Δ−) indicates a change in tension, and a curve b (− × −) indicates a change in temperature of the holder 106.

  FIG. 10 shows that when the slip rotation number is small, the temperature and tension of the holder 106 are substantially constant without cooling.

  However, when the slip rotation speed is increased, when cooling is not performed, the temperature of the holder 106 increases with the passage of time, thereby causing a phenomenon that the tension decreases.

  That is, in the comparative example (without cooling), a change in tension with the passage of time at a position of φ600 mm and a change in the temperature of the holder 106 were observed. In this case, the slip rotation speed was fixed at 200 rpm. The result is shown in FIG. In FIG. 11, a curve a (−Δ−) indicates a change in tension, and a curve b (− × −) indicates a change in temperature of the holder 106.

  From FIG. 11, the temperature of the holder 106 was about 35 ° C. and the tension was 1.7 kg at the beginning, but when 20 minutes passed, the temperature of the holder 106 rose to about 60 ° C. and the tension was 1.4 kg. You can see that it has fallen.

  On the other hand, in the example (with cooling), when the change in tension with the passage of time at the position of φ600 mm and the change in the temperature of the holder 106 were observed, the results shown in FIG. 12 were obtained. In FIG. 12, a curve a (−Δ−) shows a change in tension at a slip rotation speed = 150 rpm, a curve b (− ◯ −) shows a temperature change in the holder 106 at a slip rotation speed = 150 rpm, c (-. vertline.-) represents the change in tension at the slip rotation speed = 200 rpm, and curve d (-. fwdarw.-) represents the temperature change of the holder 106 at the slip rotation speed = 200 rpm.

  From FIG. 12, at the slip rotation speed = 150 rpm, the temperature of the holder 106 was about 30 ° C. and the tension was 1.4 kg, but when 20 minutes passed, the temperature of the holder 106 reached about 37 ° C. However, it can be seen that the tension is almost constant.

  At the slip rotation speed = 200 rpm, initially, the temperature of the holder 106 was about 37 ° C. and the tension was 1.7 kg, but when 20 minutes passed, the temperature of the holder 106 increased to about 50 ° C. Can be seen to have dropped to 1.5 kg. The rate of change in temperature and tension is very small compared to the comparative example (without cooling).

  In addition, the winding device according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.

It is a block diagram which shows the film manufacturing apparatus with which the winding apparatus which concerns on 1st-3rd embodiment is applied. It is a longitudinal cross-sectional view which shows the structure of the winding apparatus which concerns on 1st Embodiment. It is a longitudinal cross-sectional view which shows the other example of the winding apparatus which concerns on 1st Embodiment. It is a longitudinal cross-sectional view which shows the structure of the winding apparatus which concerns on 2nd Embodiment. It is sectional drawing on the VV line in FIG. It is a longitudinal cross-sectional view which shows the structure of the winding apparatus which concerns on 3rd Embodiment. It is the side view seen from the arrow VII direction in FIG. It is a characteristic view which shows the change of the tension with respect to a winding diameter. In an Example, it is a characteristic view which shows the change of the tension value with respect to slip rotation speed. In a comparative example, it is a characteristic view which shows the change of the tension | tensile_strength with progress of time and the temperature change of a holder in the measurement position of slip rotation speed 50rpm and (phi) 200mm. In a comparative example, it is a characteristic view which shows the change of the tension | tensile_strength with progress of time, and the temperature change of a holder in the measurement position of slip rotation speed 200rpm and (phi) 600mm. In an Example, it is a characteristic figure which shows the change of the tension | tensile_strength with progress of time in the measurement position of slip rotation speed (150 rpm, 200 rpm) and (phi) 600mm, and a holder's temperature change. It is a longitudinal cross-sectional view which shows the structure of the winding apparatus which concerns on a prior art example.

Explanation of symbols

16a: Narrow web 100, 140, 180 ... Winding device 102 ... Flange 104, 142, 182 ... Drive shaft 106, 146, 194 ... Holder 108 ... First bearing 110 ... First torque adjusting plate 112 ... Second Bearing 114 ... second torque adjusting plate 116,164,224 ... core 118,148,220,222 ... hollow part 120,122,154,208 ... permanent magnet 124,166,214 ... cooling means 126,168 ... first Cooling holes 128, 170 ... second cooling holes 130 ... cooling fins 144 ... ring portions 150, 196, 198 ... copper plates 152 ... inner surfaces 156, 158, 210, 212 ... permanent magnet rows 184 ... torque transmitting portions 186, 188 ... Support member 218 ... Cooling hole

Claims (8)

A drive shaft having a ring portion;
A holder that is rotatably attached to the drive shaft by a first bearing and a second bearing so as to cover the ring portion , and a belt-like member is wound around the outer peripheral surface;
Of the outer peripheral surface of the ring portion, having a ring-shaped conductor that is crimped between the first bearing and the second bearing,
On the inner peripheral surface of the holder, a magnet row composed of a plurality of magnets is arranged,
The winding device according to claim 1, wherein the magnet array faces the ring-shaped conductor. A drive shaft having a torque transmission part;
A holder rotatably provided by a first bearing and a second bearing provided adjacent to each other at a central portion of the torque transmission unit , and a belt-like member wound around an outer peripheral surface;
Of the outer peripheral surface of the torque transmitting portion, a first support member fixed adjacent to the first bearing;
Of the outer peripheral surface of the torque transmitting portion, a second support member fixed adjacent to the second bearing;
A ring-shaped first conductor that is crimped to the outer peripheral surface of the first support member;
A ring-shaped second conductor that is crimped to the outer peripheral surface of the second support member;
The inner circumferential surface of the holder is provided with a magnet row composed of a plurality of magnets via a magnet holder,
The winding device, wherein the magnet row is opposed to the ring-shaped conductor. In the winding device according to claim 1 or 2,
The drive shaft is hollow;
A cooling means for cooling at least the drive shaft and the holder ;
The winding device includes a cooling air introduction unit that introduces cooling air from the outside of the holder toward the inside of the holder and the hollow portion of the drive shaft . In the winding device according to claim 3 Symbol mounting,
The said cooling means has a cooling fin provided in the surface of the said holder, The winding apparatus characterized by the above-mentioned. In the winding device according to claim 3 ,
The cooling air introducing means is
A first cooling passage for guiding the cooling air to the holder;
A second cooling passage is provided in a portion of the drive shaft included in the holder and guides the cooling air guided into the holder to a hollow portion of the drive shaft. Winding device. In the winding device according to claim 1 or 2,
The winding device is characterized in that at least one row of the magnet rows is arranged. The winding device according to claim 6 , wherein
A plurality of magnets constituting the magnet array are arranged at an equal pitch. In the winding device according to claim 7 ,
The plurality of magnets, before being arranged, measure the strength of the magnetic force for all the magnets, and alternately arrange the strong and weak magnets.

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