WO2010131626A1 - Sheet conveyance device and sheet meandering correction method - Google Patents

Sheet conveyance device and sheet meandering correction method Download PDF

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Publication number
WO2010131626A1
WO2010131626A1 PCT/JP2010/057890 JP2010057890W WO2010131626A1 WO 2010131626 A1 WO2010131626 A1 WO 2010131626A1 JP 2010057890 W JP2010057890 W JP 2010057890W WO 2010131626 A1 WO2010131626 A1 WO 2010131626A1
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WIPO (PCT)
Prior art keywords
sheet
driving device
detection sensor
position detection
control unit
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PCT/JP2010/057890
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French (fr)
Japanese (ja)
Inventor
厚 中本
重美 浅井
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シャープ株式会社
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Publication of WO2010131626A1 publication Critical patent/WO2010131626A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/0326—Controlling transverse register of web by moving the unwinding device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/16—Associating two or more webs

Definitions

  • the present invention relates to a sheet conveying apparatus and a sheet meandering correction method for correcting meandering when a long thin film sheet meanders during conveyance.
  • a sheet such as paper or film
  • a lateral deviation that is displaced from a predetermined conveying path due to a variation in the thickness of the film or a winding state of a roll
  • the so-called meandering phenomenon is likely to occur.
  • problems such as a cutting mistake based on meandering occur in the subsequent sheet processing step.
  • it is necessary to immediately detect the occurrence of meandering in the sheet and take measures corresponding to the meandering.
  • a guide is provided along the sheet conveyance path to forcibly make the edge of the sheet uniform.
  • a contact portion such as a guide for aligning the edge
  • problems such as the edge climbing up, damaging the edge, consuming the guide, and generating dust.
  • the EPC apparatus generally includes a sheet position detection sensor, a sheet unwinding apparatus or a sheet meandering correction roller (guide roll), a driving apparatus for moving the sheet unwinding apparatus or the guide roll, and detection by the sheet edge position detection sensor.
  • the control unit is configured to receive a result and transmit a signal to the driving device.
  • Japanese Patent Laid-Open No. 2002-284415 discloses a method of correcting meandering by moving a sheet unwinding device in the axial direction.
  • a driving device that operates in the width direction of the sheet is disposed in the sheet unwinding device, and the meandering of the sheet is corrected by operating this driving device. I have to.
  • Japanese Utility Model Laid-Open No. 63-154557 discloses a method of correcting meandering by rotating a guide roll with respect to the conveying direction.
  • a pair of guide rolls are disposed on the conveyance path, and the sheet is conveyed while being hung on the pair of guide rolls.
  • the pair of guide rolls are arranged so as to extend at right angles to the sheet conveying direction, and the meandering of the sheet is corrected by changing the direction of the pair of guide rolls with respect to the sheet conveying direction. ing.
  • Japanese Patent Laid-Open No. 2008-63116 discloses a method of correcting meandering by moving a guide roll in the transport direction.
  • a guide roll is disposed in the conveyance path, and the sheet is conveyed by being hung on the guide roll.
  • the guide roll is disposed so as to extend at right angles to the sheet conveying direction, and the meandering of the sheet is corrected by moving the guide roll in the axial direction with respect to the sheet conveying direction. .
  • a sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and the first
  • a first control unit that receives a detection result of the first sheet position detection sensor and transmits a signal to the first driving device; a second sheet position detection sensor; a sheet meandering correction roller; and the sheet meandering correction roller.
  • a second drive unit that moves the second drive unit, a second control unit that receives a detection result of the second sheet position detection sensor and transmits a signal to the second drive unit, and the first sheet position detection sensor
  • a third control unit that receives positional information of the second driving device and transmits a signal to the third driving device.
  • the sheet meandering state is sensed by the first sheet position detection sensor, and the sheet unwinding device is operated by the first driving device in accordance with the sheet meandering state.
  • the meandering immediately after unwinding of the sheet caused by the state or the like can be suppressed.
  • the first sheet position detection sensor is operated by the third driving device in response to the position information of the second driving device, even if a tendency meandering due to the device accuracy or the like occurs, in the sheet processing section The meandering of the sheet can be suppressed, and the second driving device is less likely to reach the stroke end.
  • the sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and detection by the first sheet position detection sensor.
  • a first control unit that receives the result and transmits a signal to the first drive unit, a second sheet position detection sensor, a sheet meandering correction roller, and a second drive unit that moves the sheet meandering correction roller
  • a second control unit that receives a detection result of the second sheet position detection sensor and transmits a signal to the second driving device; and a first control unit that receives positional information of the second driving device. It is comprised from the 3rd control part which transmits a signal to a control part.
  • the sheet meandering state is sensed by the second sheet position detection sensor, and the sheet meandering correction roller is operated by the second driving device in accordance with the sheet meandering state. Even if the sheet is meandering, the meandering of the sheet in the sheet processing step can be suppressed.
  • the sheet processing step The meandering of the sheet in the section can be suppressed, and the second driving device is less likely to reach the stroke end.
  • the second control unit operates the second driving device when the value of the second sheet position detection sensor exceeds a value specified in advance.
  • the second driving device since the sheet meandering correction roller is operated by the second driving device only after the second sheet position detection sensor indicates a certain value or more, the second driving device may reach the stroke end. Less.
  • the second control unit may prevent the sheets before and after the second driving device from moving when the position of the second driving device exceeds a predetermined value. It is preferable to perform control to return the position of the second driving device to the initial state after fixing and lowering the tension of the sheet so that the sheet does not move by the movement of the second driving device.
  • the position of the second driving device exceeds a predetermined value
  • the front and rear sheets of the second driving device are fixed so as not to move, the tension of the sheet is lowered, and the sheet is moved to the second position. Since the position of the second driving device is returned to the initial state after the movement of the driving device is prevented from moving, the second driving device does not reach the stroke end.
  • the sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and detection by the first sheet position detection sensor.
  • a first control unit that transmits a signal to the first drive device, a second sheet position detection sensor, a third drive device that moves the first sheet position detection sensor, And a fourth control unit which receives a detection result of the second sheet position detection sensor and transmits a signal to the third driving device.
  • the sheet meandering state is sensed by the second sheet position detecting sensor, and the first sheet position detecting sensor is operated by the third driving device in accordance with the sheet meandering state. Even if the target meandering occurs, the meandering of the sheet in the sheet processing step can be suppressed.
  • the sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and detection by the first sheet position detection sensor.
  • the first control unit which receives a result and transmits a signal to the first driving device, a second sheet position detection sensor, and the first control which receives a detection result of the second sheet position detection sensor.
  • a fourth control unit for transmitting a signal to the unit.
  • the sheet meandering state is sensed by the second sheet position detecting sensor, and the target value of the first sheet position detecting sensor is changed by the first control unit according to the sheet meandering state. Even if the tendency meandering occurs, the meandering of the sheet in the sheet processing section can be suppressed.
  • the sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor,
  • a sheet meandering correction method for a sheet conveying apparatus comprising: a sheet meandering correction roller; a second driving device for moving the sheet meandering correction roller; and a third driving device for moving the first sheet position detection sensor.
  • the second driving device is driven by the second step
  • the third driving device is driven by the position information of the second driving device.
  • the sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor,
  • a sheet meandering correction method for a sheet conveying apparatus comprising: a sheet meandering correction roller; a second driving device for moving the sheet meandering correction roller; and a third driving device for moving the first sheet position detection sensor.
  • the first step of driving the first driving device according to the detection result of the first sheet position detection sensor, and the detection result of the second sheet position detection sensor.
  • the sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor, A sheet meandering correction method for a sheet conveying apparatus, comprising: a second driving device that moves the first sheet position detection sensor.
  • the sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor, A sheet meandering correction method for a sheet conveying apparatus, comprising: a second driving device that moves the first sheet position detection sensor.
  • the sheet meandering correction method of the present invention includes a step of driving the first drive unit in accordance with a detection result of the second sheet position detection sensor.
  • the meandering of the sheet can be suppressed, and it is less likely that the meandering is impossible.
  • 1 is a schematic diagram illustrating a sheet conveying apparatus according to a first embodiment of the present invention.
  • 1 is a perspective view showing a sheet conveying apparatus according to a first embodiment of the present invention. It is a flowchart which shows operation
  • FIG. 5 is a perspective view illustrating a case where the sheet conveying apparatus according to the first embodiment of the present invention performs intermittent conveyance. It is a flowchart which shows operation
  • FIG. 1 is a schematic view showing the optical sheet conveying apparatus 100
  • FIG. 2 is a perspective view showing the optical sheet conveying apparatus 100.
  • 1 is a material roll
  • 2 is an upstream sheet
  • 3 is a material roll shaft
  • 4 is a sheet meandering correction roller
  • 5 is an idler
  • 6 is a downstream sheet
  • 10 is a first driving device
  • 20 is a second
  • 30 is a third driving device
  • 40 is a first sheet position detection sensor
  • 50 is a second sheet position detection sensor.
  • the material roll 1 is a roll of optical sheets such as a diffusion sheet for diffusing light and a prism sheet for condensing light.
  • a laminator for protecting the optical sheet may be attached to the front surface, the back surface, or both surfaces.
  • the material roll 1 is not limited to an optical sheet, but may be a roll of various thin film sheets such as a carrier sheet for conveyance and a blade contact sheet used for sheet punching.
  • the upstream sheet 2 is a sheet unwound from the material roll 1.
  • the laminator is attached to the material roll 1, the laminator is peeled off by a peeling device (not shown).
  • the material roll shaft 3 is a shaft for fixing the material roll 1, and has a mechanism that rotates in the axial direction by a driving device (not shown) to unwind the material roll 1. Furthermore, it has a function of detecting the winding state of the material roll 1 and changing the rotation speed of unwinding.
  • the material roll shaft 3 and a drive device (not shown) constitute a sheet unwinding device.
  • the sheet meandering correction roller 4 is a roller around which a downstream sheet 6 described later is wound.
  • the sheet meandering correction roller 4 operates due to the friction between the sheet meandering correction roller 4 and the downstream side sheet 6, the downstream side sheet 6 operates accordingly, and the meandering of the downstream side sheet 6 is corrected.
  • the idler 5 is a shaft that rotates following the seat. This is used to generate a sheet conveyance path or to apply tension to the sheet.
  • the downstream sheet 6 is a sheet in the vicinity of the processing step (not shown).
  • the processing process includes various sheet processing processes such as cutting and punching, and the purpose of sheet conveyance is in this processing process. Therefore, the first purpose of the meander correction is to prevent the sheet from meandering in the processing step section.
  • the first drive device 10 is intended to move the material roll 1 in the axial direction by moving the material roll shaft 3 in the axial direction.
  • the second drive device 20 is intended to operate the sheet 2 in the axial direction by operating the sheet meandering correction roller 4 in the axial direction.
  • the third driving device 30 is intended to operate a first sheet position detection sensor 40 described later.
  • the second driving device 20 and the third driving device 30 various conventionally known driving devices such as a servo motor and a ball screw can be used.
  • the first sheet position detection sensor 40 is a sensor for detecting the edge portion of the upstream sheet 2 after the material roll 1 is unwound.
  • the second sheet position detection sensor 50 is a sensor for detecting the edge portion of the downstream sheet 6.
  • the first sheet position detection sensor 40 and the second sheet position detection sensor 50 various conventionally known detection sensors such as a photoelectric sensor and a transmission sensor can be used.
  • step a1 the difference (deviation) e1 between the value of the first sheet position detection sensor 40 and the target value is input and is calculated by the first control unit 35 to obtain the control output u1.
  • step a2 the first drive device 10 is operated based on the control output u1 of the first control unit 35.
  • the material roll shaft 3 operates in a direction opposite to the direction in which the upstream sheet 2 is meandering, and the material roll 1 attached thereto operates in a direction opposite to the direction in which the upstream sheet 2 is meandering. . Therefore, even if the upstream sheet 2 meanders, the edge of the upstream sheet 2 moves to the target position.
  • PID control As the first control unit 35, various conventionally known controls can be used.
  • PID control is used.
  • K1p, K1i, and K1d are control constants
  • ⁇ t is a control period
  • a difference (deviation) between the value of the first sheet position detection sensor 40 and a target value is e1
  • a control output is u1
  • a time constant is n, It is expressed by the following formula.
  • control constants K1p, K1i, K1d, and the control cycle ⁇ t effective values are selected depending on the distance from the material roll 1 to the first sheet position detection sensor 40, the unwinding speed, width, material, and the like of the material roll 1. There is a need.
  • ⁇ t is time when the sheet is continuously conveyed, and the above control is performed once every ⁇ t seconds. Further, when the sheet is intermittently conveyed, ⁇ t is the number of unwinding times, and the above control is performed once every unwinding number of times ⁇ t.
  • FIG. 4 shows the transition of the difference (deviation) e1 between the value of the first sheet position detection sensor 40 and the target value when the sheet conveyance is intermittent.
  • the edge position of the upstream sheet 2 is detected by the first sheet position detection sensor 40 and the first drive device 10 is operated by the first control unit 35, whereby the meandering of the upstream sheet 2 is performed. Will be corrected.
  • a second control unit operating condition p [mm] is set.
  • step b2 when
  • step b4 the second driving device 20 is operated based on the control output u2 of the second control unit 45.
  • the sheet meandering correction roller 4 operates in a direction opposite to the direction in which the downstream side sheet 6 meanders, and the downstream side sheet applied thereto by the frictional force between the sheet meandering correction roller 4 and the downstream side sheet 6. 6 operates in a direction opposite to the direction in which the downstream sheet 6 is meandering. Therefore, even if the downstream sheet 6 meanders, the edge of the downstream sheet 6 moves to a target position.
  • step b2 if
  • PID control As the second control unit 45, various conventionally known controls can be used.
  • PID control is used.
  • K2p, K2i, and K2d are control constants
  • ⁇ t is a control period
  • a difference (deviation) between the value of the second sheet position detection sensor 50 and a target value is e2
  • a control output is u2
  • a time constant is n, It is expressed by the following formula.
  • control constants K2p, K2i, K2d, and the control cycle ⁇ t are necessary to select effective values for the control constants K2p, K2i, K2d, and the control cycle ⁇ t depending on the feed speed, width, material, and the like of the sheet 2.
  • ⁇ t is time when the sheet is continuously conveyed, and the above control is performed once every ⁇ t seconds. If the sheet is intermittently conveyed, ⁇ t is the number of conveyances, and the above control is performed at a frequency of once every conveyance number ⁇ t.
  • FIG. 6 shows the transition of the difference (deviation) e2 between the value of the second sheet position detection sensor 50 and the target value when the sheet conveyance is intermittent.
  • the second control unit operating condition p 0, even if the deviation is as small as ⁇ 0.001 [mm], the second driving device 20 operates, so that the long-time device is When operating, the second drive unit 20 may reach the stroke end. Therefore, by determining the value of the control operation condition p so that the second drive device 20 is not operated at a certain deviation or less, the second drive device 20 is less likely to reach the stroke end.
  • the second control unit operating condition p it is desirable to input an allowable value of the meandering amount of the sheet. That is, the second driving device 20 is operated only when the value of the allowable meandering amount of the sheet is exceeded.
  • FIG. 7 shows the transition of the deviation e2 of the downstream seat 6 when the above control is not performed. This has meandering of maximum deviation +0.20 [mm] and average deviation +0.10 [mm].
  • the edge position of the downstream sheet 6 is detected by the second sheet position detection sensor 50 and the second drive unit 20 is operated by the second control unit 45, whereby the downstream sheet 6 is meandered. Will be corrected.
  • the operation of the second drive device 20 and the third drive device 30 will be described with reference to the flowchart shown in FIG.
  • the operation steps c2 and c4 to c6 of the second drive device 20 in FIG. 9 are the same as the steps b1 to b4 in FIG. 5 described above.
  • a third control unit operating condition k is set.
  • the value of the third control unit operating condition k is time m when the sheet is continuously conveyed, and the third driving device 30 is operated at a frequency of once every k seconds through steps c3 to c7.
  • k is the number of conveyance m, and the third driving device 30 is operated at a frequency of once every k times through steps c3 to c7.
  • step c7 when the time m (or the number of conveyances m) becomes equal to k, in step c8, the difference (deviation) e3 between the current position and the initial position of the second drive device 20 is input, and the third The control unit 55 calculates and obtains the control output u3.
  • step c9 the third drive device 30 is operated based on the control output u3 of the third control unit 55. Thereafter, in step c10, m is reset to 0, and the process returns to step c4.
  • the first sheet position detection sensor 40 operates in the axial direction. Therefore, when the first drive device 10 operates as described above, the upstream seat 2 operates in the direction opposite to the operation direction of the second drive device 20. Therefore, the second drive device 20 can be prevented from operating only in the same direction, and the stroke range of the second drive device 20 can be kept small.
  • Proportional control is expressed by the following equation, where K3p is a control constant, k is a control period, the difference (deviation) between the current position and the initial position of the second drive unit 20 is e3, the control output is u3, and the time constant is n. Is done.
  • control constant K3p and the control cycle k it is necessary to select effective values depending on the distance between the first sheet position detection sensor 40 and the second driving device 20, the feed speed, width, material, and the like of the sheet 2. is there.
  • the same effect can be obtained by changing the target value of the first sheet position detection sensor 40 by u3 instead of operating the third driving device 30.
  • the detection range of the first sheet position detection sensor 40 is H [mm]
  • the center value of the detection range, H / 2 [mm] is normally set as a target value in order to exert the maximum effect.
  • the meandering of the upstream sheet 2 can be detected up to ⁇ H / 2 [mm].
  • the target value of the first sheet position detection sensor 40 is changed by u3 (u3> 0). Then, the target value of the first sheet position detection sensor 40 is H / 2 + u3 [mm], and the maximum meandering detection amount of the upstream side sheet 2 is decreased by u3 [mm] to H / 2 ⁇ u3 [mm].
  • this control method may be effective because it can be controlled only by changing the software. Either one of these may be adopted depending on the detection range of the first sheet position detection sensor 40 and the amount of meandering of the upstream side sheet 2, or they may be used in combination.
  • FIG. 10 is a perspective view illustrating a case where the sheet conveying apparatus according to the present embodiment performs intermittent conveyance.
  • 60 is a sheet conveying mechanism
  • 70 is a sheet presser
  • 80 is a sheet punching machine
  • 90 is a sheet punching table.
  • the sheet conveying mechanism 60 is a mechanism for holding a sheet to convey the sheet intermittently and conveying it for a certain distance. After conveying for a certain distance, the gripping of the sheet is stopped and the initial position is restored. When the sheets are continuously conveyed, the sheet conveying mechanism 60 only holds the sheet.
  • the sheet presser 70 fixes and prevents the downstream sheet 6 from moving.
  • the sheet punching machine 80 punches the downstream sheet 6 and has a drive source and a punching blade (not shown).
  • the punching blade has a belt-like shape extending in a straight line and has a specific shape, for example, a rectangular shape, and is arranged so as to be substantially perpendicular to the conveyance direction of the downstream sheet 6.
  • As the punching blade a conventionally known one can be adopted, and specifically, for example, a Thomson blade, a pinnacle blade, an engraving blade and the like can be exemplified.
  • the sheet punching table 90 is a base on which the downstream sheet 6 is placed when the downstream sheet 6 is punched by the sheet punching machine 80.
  • the placement surface of the sheet punching table 90 has a planar shape that is parallel to the conveyance direction of the downstream sheet 6.
  • the operation of the first drive device 10, the second drive device 20, and the third drive device 30 will be described based on the flowchart shown in FIG.
  • the operation steps d5 and d6 of the first drive device 10 in FIG. 11 are the same as the steps a1 and a2 in FIG. 3 described above.
  • the operation steps d2 and d7 to d9 of the second driving device in FIG. 11 are the same as the steps b1 to b4 in FIG. 5 described above.
  • the operation steps d1, d4 and d13 to d16 of the third driving device in FIG. 11 are the same as the above-described steps c1, c3 and c7 to c10 in FIG.
  • a second drive unit initialization condition q [mm] is set.
  • the value of the second drive unit initialization condition q is a value set within the stroke of the second drive unit 20. If this value is large, the frequency of initializing the second drive unit is low, but the time required for initialization becomes long. When this value is small, the time required for initialization is short, but the frequency of initializing the second drive unit is high. It is necessary to select an optimum value in consideration of the meandering amount of the sheet and the stroke range of the second drive unit 20.
  • step d10 if
  • the sheet meandering correction roller 4 is operated in a direction to lower the tension of the downstream side sheet 6 by a drive unit (not shown). Then, since the sheet is fixed, the frictional force between the sheet meandering correction roller 4 and the downstream sheet 6 is reduced or eliminated. Therefore, even if the sheet meandering correction roller 4 is moved in the axial direction, the downstream side sheet 6 hung thereon does not move.
  • step d12 the second driving device 20 is returned to the initial position.
  • the position of the downstream sheet 6 in the width direction is not changed, and the operation position of the second driving device 20 can be initialized, the stroke end is not reached, and the sheet conveying device stops due to an error. Disappears.
  • FIG. 12 is a schematic view showing the optical sheet conveying apparatus 200.
  • parts that are the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
  • the optical sheet conveying apparatus 200 according to the second embodiment is similar to the configuration of the optical sheet conveying apparatus 100 according to the first embodiment, and includes a fourth control unit 45 instead of the second control unit 45 and the third control unit 55.
  • the control part 65 is provided.
  • the operation of the first drive device 10 in the second embodiment is the same as that in the first embodiment.
  • the operation of the third drive device 30 will be described based on the flowchart shown in FIG.
  • a fourth control unit operating condition k is set.
  • the value of the fourth control unit operation condition k is time m when the sheet is continuously conveyed, and the third driving device 30 is operated at a frequency of once every k seconds through steps e2 and e3.
  • k is the number m of conveyance, and the third driving device 30 is operated at a frequency of once every k times through steps e2 and e3.
  • step e3 when the number of conveyances m (or time m) becomes equal to k, in step e4, the difference (deviation) e2 between the value of the second sheet position detection sensor 50 and the target value is k times (seconds).
  • the hit average value e4 is input, and the fourth control unit 65 calculates the value to obtain the control output u4.
  • e4 is expressed by the following equation.
  • step e5 the third driving device 30 is operated based on the control output u4 of the fourth control unit 65. Thereafter, in step e6, m is reset to 0, and the process returns to step e3.
  • the first sheet position detection sensor 40 operates in the axial direction. Therefore, when the first driving device 10 operates as described above, the upstream sheet 2 operates in a direction opposite to the meandering direction of the downstream sheet 6. Therefore, even if the downstream sheet 6 meanders, the edge of the downstream sheet 6 moves to a target position.
  • the fourth control unit 65 various conventionally known controls can be used.
  • proportional control is used.
  • K4p is a control constant
  • k is a control cycle
  • the difference (deviation) between the value of the second sheet position detection sensor and the target value e2 is an average value per k seconds (times)
  • e4 and the control output is u4.
  • the time constant is n and is expressed by the following formula.
  • control constant K4p and the control cycle k effective values are selected depending on the distance between the first sheet position detection sensor 40 and the second sheet position detection sensor 50, the feeding speed, width, material, and the like of the sheet 2. There is a need.
  • the same effect can be obtained by changing the target value of the first sheet position detection sensor 40 by u4 instead of operating the third driving device 30.
  • the meandering of the upstream sheet 2 and the downstream sheet 6 is corrected.
  • the second embodiment does not require the second drive device 20, and thus has an effect that the device can be simplified.
  • the meandering correction of the downstream sheet 6 it is effective for the tendency meandering, but the effect for the sudden meandering is weak. It is necessary to carefully check the characteristics of the device and determine which control should be applied.
  • FIG. 14 is a schematic view showing the optical sheet conveying apparatus 300.
  • the same reference numerals are given to portions common to the first embodiment and the second embodiment, and the description thereof is omitted.
  • the sheet conveying apparatus 300 includes a plurality (five in the present embodiment) of sheet conveying apparatuses 100 or sheet conveying apparatuses 200. About the downstream sheet
  • the material roll 1, the upstream sheet 2, the first driving device 10, the third driving device 30, and the first sheet position detection sensor 40 which are upstream configurations, are configured to convey sheets.
  • suffixes a, b, c, d, and e are added to the reference symbols.
  • the configuration on the downstream side is the same as that of the sheet conveying apparatus 100 or the sheet conveying apparatus 200, and is common to all sheets.
  • meandering correction control is performed for each sheet in the same manner as in the first embodiment or the second embodiment. Since the downstream side is shared, the first driving devices 10a to 10e and the third driving devices 30a to 30e corresponding to the respective sheets operate with respect to one downstream signal.
  • the sheet conveying apparatus of the present invention can be used for correcting meandering in roll feeding of all thin film sheets as well as optical sheets.

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  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

A sheet conveyance device (100) for conveying a sheet, comprising: a first sheet position detection sensor (40); a sheet pay-out device, a first drive device (10) for moving the sheet pay-out device, a first control unit (35) for transmitting a signal to the first drive device (10) upon receiving the result of the detection by the first sheet position detection sensor (40); a second sheet position detection sensor (50); a sheet meandering correction roller (4); a second drive device (20) for moving the sheet meandering correction roller (4); a second control unit (45) for transmitting a signal to the second drive device (20) upon receiving the result of the detection by the second sheet position detection sensor (50); a third drive device (30) for moving the first sheet position detection sensor (40); and a third control unit (55) for transmitting a signal to the third drive device (30) upon receiving information relating to the position of the second drive device (20).

Description

シート搬送装置およびシート蛇行修正方法Sheet conveying apparatus and sheet meandering correction method
　本発明は、長尺の薄膜状シートが搬送中に蛇行した場合に、その蛇行を修正するシート搬送装置およびシート蛇行修正方法に関する。 The present invention relates to a sheet conveying apparatus and a sheet meandering correction method for correcting meandering when a long thin film sheet meanders during conveyance.
　一般に紙やフィルムなどのウェブ状シート（以下シートと称する）は交換する際や、高速で搬送する過程において、フィルムの厚みのバラツキやロールの巻き状態等によって所定の搬送経路から変位する横ズレ、いわゆる蛇行の現象を生じ易い。この蛇行が発生すると、後のシートの処理工程において蛇行に基づく裁断ミスなどの問題が発生する。このような事故を未然に防止するためには、シートに蛇行が生じたときには直ちにこれを検出して、蛇行に対応した措置をとる必要がある。 In general, when a web-like sheet (hereinafter referred to as a sheet) such as paper or film is exchanged or in the process of being conveyed at a high speed, a lateral deviation that is displaced from a predetermined conveying path due to a variation in the thickness of the film or a winding state of a roll, The so-called meandering phenomenon is likely to occur. When this meandering occurs, problems such as a cutting mistake based on meandering occur in the subsequent sheet processing step. In order to prevent such an accident, it is necessary to immediately detect the occurrence of meandering in the sheet and take measures corresponding to the meandering.
　従来、シートの蛇行修正を自動的に行うには、シートの搬送経路に沿ってガイドを設け、シートのエッジを強制的に均一にすることが行われている。しかし、エッジの弱い薄膜状シートの場合、エッジ揃えのためガイドのような接触部があると、エッジが乗り上げたりエッジを損傷したりガイドを消耗したり粉塵を生ずる等の問題がある。 Conventionally, in order to automatically correct the meandering of the sheet, a guide is provided along the sheet conveyance path to forcibly make the edge of the sheet uniform. However, in the case of a thin sheet with a weak edge, if there is a contact portion such as a guide for aligning the edge, there are problems such as the edge climbing up, damaging the edge, consuming the guide, and generating dust.
　そのため、通常薄膜状シートにはＥＰＣ（Edge Position Controller）装置が用いられている。このＥＰＣ装置は、一般にシート位置検出センサと、シート巻出し装置またはシート蛇行修正ローラー（ガイドロール）と、前記シート巻出し装置またはガイドロールを移動させる駆動装置と、前記シートエッジ位置検出センサの検出結果を受けて前記駆動装置に信号を発信する制御部とから構成されている。 Therefore, an EPC (Edge Position Controller) device is usually used for the thin film sheet. The EPC apparatus generally includes a sheet position detection sensor, a sheet unwinding apparatus or a sheet meandering correction roller (guide roll), a driving apparatus for moving the sheet unwinding apparatus or the guide roll, and detection by the sheet edge position detection sensor. The control unit is configured to receive a result and transmit a signal to the driving device.
　特開２００２－２８４４１５号公報には、シート巻出し装置を軸方向に移動させることによって蛇行を修正する方法が開示されている。特開２００２－２８４４１５号公報に開示される技術では、シート巻出し装置にシートの幅方向に動作する駆動装置が配設されており、この駆動装置を動作させることによりシートの蛇行を修正するようにしている。 Japanese Patent Laid-Open No. 2002-284415 discloses a method of correcting meandering by moving a sheet unwinding device in the axial direction. In the technique disclosed in Japanese Patent Laid-Open No. 2002-284415, a driving device that operates in the width direction of the sheet is disposed in the sheet unwinding device, and the meandering of the sheet is corrected by operating this driving device. I have to.
　実開昭６３－１５４５５７号公報には、ガイドロールを搬送方向に対し回転させることによって蛇行を修正する方法が開示されている。実開昭６３－１５４５５７号公報に開示される技術では、搬送経路に一対のガイドロールが配設されており、シートはこの一対のガイドロールに掛けられて搬送される。この一対のガイドロールはシートの搬送方向に対して直角に延びるように配設されており、シートの搬送方向に対して一対のガイドロールの向きを変えることにより、シートの蛇行を修正するようにしている。 Japanese Utility Model Laid-Open No. 63-154557 discloses a method of correcting meandering by rotating a guide roll with respect to the conveying direction. In the technique disclosed in Japanese Utility Model Laid-Open No. 63-154557, a pair of guide rolls are disposed on the conveyance path, and the sheet is conveyed while being hung on the pair of guide rolls. The pair of guide rolls are arranged so as to extend at right angles to the sheet conveying direction, and the meandering of the sheet is corrected by changing the direction of the pair of guide rolls with respect to the sheet conveying direction. ing.
　また、特開２００８－６３１１６号公報には、ガイドロールを搬送方向に対し移動させることによって蛇行を修正する方法が開示されている。特開２００８－６３１１６号公報に開示される技術では、搬送経路にガイドロールが配設されており、シートはこのガイドロールに掛けられて搬送される。このガイドロールはシートの搬送方向に対して直角に延びるように配設されており、シートの搬送方向に対してガイドロールを軸方向に移動させることにより、シートの蛇行を修正するようにしている。 Japanese Patent Laid-Open No. 2008-63116 discloses a method of correcting meandering by moving a guide roll in the transport direction. In the technique disclosed in Japanese Patent Application Laid-Open No. 2008-63116, a guide roll is disposed in the conveyance path, and the sheet is conveyed by being hung on the guide roll. The guide roll is disposed so as to extend at right angles to the sheet conveying direction, and the meandering of the sheet is corrected by moving the guide roll in the axial direction with respect to the sheet conveying direction. .
　ここで、特開２００２－２８４４１５号公報のようにシート巻出し装置をシートの幅方向に動作させるタイプの場合、シート巻出し後のセンサが設置されている箇所まではシートの蛇行が修正されるが、それ以降の蛇行については修正できない。そのため、シート搬送経路が長くなると、後のシートの処理工程において蛇行を生じるという問題がある。 Here, in the case of a type in which the sheet unwinding device is operated in the sheet width direction as disclosed in JP-A-2002-284415, the meandering of the sheet is corrected up to the position where the sensor after sheet unwinding is installed. However, the meandering after that cannot be corrected. Therefore, when the sheet conveyance path becomes long, there is a problem that meandering occurs in the subsequent sheet processing step.
　実開昭６３－１５４５５７号公報のように、一対のガイドロールの向きを変えるタイプの場合、小さい蛇行の修正には適しているが、シートの蛇行量が大きい場合には、修正のためにシートにしわが発生したり、シートに張力が累積して安定した修正ができなくなったりするために、シート搬送装置の運転を停止して修正を行わなければならないという問題がある。また、複数枚のシートを重ね合わせて搬送する場合には、シートにかかる圧力が高くなるため、シート同士が傷を付け合ってしまう問題がある。 In the type in which the direction of the pair of guide rolls is changed as disclosed in Japanese Utility Model Publication No. 63-154557, it is suitable for correcting a small meander, but if the amount of meandering of the sheet is large, the sheet is used for correction. Since wrinkles are generated or stable tension cannot be corrected due to accumulation of tension on the sheet, there is a problem that the operation of the sheet conveying apparatus must be stopped and the correction must be performed. Further, when a plurality of sheets are stacked and conveyed, the pressure applied to the sheets becomes high, and there is a problem that the sheets are damaged.
　また、特開２００８－６３１１６号公報のようにガイドロールを移動させるタイプの場合には、シートの蛇行が目標値に対しある一方向に偏っているとガイドロールがその蛇行を修正する方向に偏って動作するため、ガイドロールがストロークエンドに到達してしまい、修正が不可能になる。再度修正を可能とするためには、シート搬送装置の運転を停止してガイドロールの位置を直す必要がある。 Further, in the case of the type in which the guide roll is moved as in JP 2008-63116 A, if the meandering of the sheet is biased in one direction with respect to the target value, the guide roll is biased in the direction of correcting the meandering. Therefore, the guide roll reaches the stroke end and cannot be corrected. In order to enable correction again, it is necessary to stop the operation of the sheet conveying device and correct the position of the guide roll.
　このような課題を解決するために、本発明のシート搬送装置は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、第２のシート位置検出センサと、シート蛇行修正ローラーと、前記シート蛇行修正ローラーを移動させる第２の駆動装置と、前記第２のシート位置検出センサの検出結果を受けて前記第２の駆動装置に信号を発信する第２の制御部と、前記第１のシート位置検出センサを移動させる第３の駆動装置と、前記第２の駆動装置の位置情報を受けて前記第３の駆動装置に信号を発信する第３の制御部とから構成されている。 In order to solve such a problem, a sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and the first A first control unit that receives a detection result of the first sheet position detection sensor and transmits a signal to the first driving device; a second sheet position detection sensor; a sheet meandering correction roller; and the sheet meandering correction roller. A second drive unit that moves the second drive unit, a second control unit that receives a detection result of the second sheet position detection sensor and transmits a signal to the second drive unit, and the first sheet position detection sensor And a third control unit that receives positional information of the second driving device and transmits a signal to the third driving device.
　本発明によれば、第１のシート位置検出センサによってシート蛇行状況をセンシングし、シート蛇行状況に応じて第１の駆動装置によりシート巻出し装置を動作させるので、シート厚みのバラツキやロールの巻き状態等によって生じるシート巻出し直後の蛇行を抑制できる。 According to the present invention, the sheet meandering state is sensed by the first sheet position detection sensor, and the sheet unwinding device is operated by the first driving device in accordance with the sheet meandering state. The meandering immediately after unwinding of the sheet caused by the state or the like can be suppressed.
　また、第２の駆動装置の位置情報を受けて第３の駆動装置により第１のシート位置検出センサを動作させるので、装置精度等による傾向的蛇行が発生したとしても、シートの処理工程部におけるシートの蛇行を抑制でき、さらに第２の駆動装置がストロークエンドに達することが少なくなる。 Further, since the first sheet position detection sensor is operated by the third driving device in response to the position information of the second driving device, even if a tendency meandering due to the device accuracy or the like occurs, in the sheet processing section The meandering of the sheet can be suppressed, and the second driving device is less likely to reach the stroke end.
　また、本発明のシート搬送装置は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、第２のシート位置検出センサと、シート蛇行修正ローラーと、前記シート蛇行修正ローラーを移動させる第２の駆動装置と、前記第２のシート位置検出センサの検出結果を受けて前記第２の駆動装置に信号を発信する第２の制御部と、前記第２の駆動装置の位置情報を受けて前記第１の制御部に信号を発信する第３の制御部から構成されている。 The sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and detection by the first sheet position detection sensor. A first control unit that receives the result and transmits a signal to the first drive unit, a second sheet position detection sensor, a sheet meandering correction roller, and a second drive unit that moves the sheet meandering correction roller A second control unit that receives a detection result of the second sheet position detection sensor and transmits a signal to the second driving device; and a first control unit that receives positional information of the second driving device. It is comprised from the 3rd control part which transmits a signal to a control part.
　本発明によれば、第２のシート位置検出センサによってシート蛇行状況をセンシングし、シート蛇行状況に応じて第２の駆動装置によりシート蛇行修正ローラーを動作させるので、第１のシート位置検出センサ以降のシートが蛇行していたとしても、シートの処理工程部におけるシートの蛇行を抑制できる。 According to the present invention, the sheet meandering state is sensed by the second sheet position detection sensor, and the sheet meandering correction roller is operated by the second driving device in accordance with the sheet meandering state. Even if the sheet is meandering, the meandering of the sheet in the sheet processing step can be suppressed.
　また、第２の駆動装置の位置情報を受けて第１のシート位置検出センサの目標値を第１制御部によって変化させるので、装置精度等による傾向的蛇行が発生したとしても、シートの処理工程部におけるシートの蛇行を抑制でき、さらに第２の駆動装置がストロークエンドに達することが少なくなる。 Further, since the target value of the first sheet position detection sensor is changed by the first control unit in response to the position information of the second driving device, even if a tendency meander due to the device accuracy or the like occurs, the sheet processing step The meandering of the sheet in the section can be suppressed, and the second driving device is less likely to reach the stroke end.
　また、本発明のシート搬送装置において、前記第２の制御部は、第２のシート位置検出センサの値があらかじめ指定した値を超えた場合、前記第２の駆動装置を動作させることが好ましい。 In the sheet conveying apparatus of the present invention, it is preferable that the second control unit operates the second driving device when the value of the second sheet position detection sensor exceeds a value specified in advance.
　本発明によれば、第２のシート位置検出センサがある一定以上の値を示して初めて第２の駆動装置によりシート蛇行修正ローラーを動作させるので、第２の駆動装置がストロークエンドに達することが少なくなる。 According to the present invention, since the sheet meandering correction roller is operated by the second driving device only after the second sheet position detection sensor indicates a certain value or more, the second driving device may reach the stroke end. Less.
　また、本発明のシート搬送装置において、前記第２の制御部は、前記第２の駆動装置の位置が、あらかじめ指定した値を超えると、第２の駆動装置の前後のシートが動かないように固定し、シートの張力を下げ、シートが前記第２の駆動装置の移動によって動かないようにした後、前記第２の駆動装置の位置を初期状態に戻す制御を行うことが好ましい。 In the sheet conveying device of the present invention, the second control unit may prevent the sheets before and after the second driving device from moving when the position of the second driving device exceeds a predetermined value. It is preferable to perform control to return the position of the second driving device to the initial state after fixing and lowering the tension of the sheet so that the sheet does not move by the movement of the second driving device.
　本発明によれば、第２の駆動装置の位置があらかじめ指定した値を超えると、第２の駆動装置の前後のシートが動かないように固定し、シートの張力を下げ、シートが前記第２の駆動装置の移動によって動かないようにした後、前記第２の駆動装置の位置を初期状態に戻すので、第２の駆動装置がストロークエンドに達することがなくなる。 According to the present invention, when the position of the second driving device exceeds a predetermined value, the front and rear sheets of the second driving device are fixed so as not to move, the tension of the sheet is lowered, and the sheet is moved to the second position. Since the position of the second driving device is returned to the initial state after the movement of the driving device is prevented from moving, the second driving device does not reach the stroke end.
　また、本発明のシート搬送装置は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、第２のシート位置検出センサと、前記第１のシート位置検出センサを移動させる第３の駆動装置と、前記第２のシート位置検出センサの検出結果を受けて前記第３の駆動装置に信号を発信する第４の制御部とから構成されている。 The sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and detection by the first sheet position detection sensor. In response to the result, a first control unit that transmits a signal to the first drive device, a second sheet position detection sensor, a third drive device that moves the first sheet position detection sensor, And a fourth control unit which receives a detection result of the second sheet position detection sensor and transmits a signal to the third driving device.
　本発明によれば、第２のシート位置検出センサによってシート蛇行状況をセンシングし、シート蛇行状況に応じて第３の駆動装置により第１のシート位置検出センサを動作させるので、装置精度等による傾向的蛇行が発生したとしても、シートの処理工程部におけるシートの蛇行を抑制できる。 According to the present invention, the sheet meandering state is sensed by the second sheet position detecting sensor, and the first sheet position detecting sensor is operated by the third driving device in accordance with the sheet meandering state. Even if the target meandering occurs, the meandering of the sheet in the sheet processing step can be suppressed.
　また、本発明のシート搬送装置は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、第２のシート位置検出センサと、前記第２のシート位置検出センサの検出結果を受けて前記第１の制御部に信号を発信する第４の制御部とから構成されている。 The sheet conveying device of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, and detection by the first sheet position detection sensor. The first control unit which receives a result and transmits a signal to the first driving device, a second sheet position detection sensor, and the first control which receives a detection result of the second sheet position detection sensor. And a fourth control unit for transmitting a signal to the unit.
　本発明によれば、第２のシート位置検出センサによってシート蛇行状況をセンシングし、シート蛇行状況に応じて第１のシート位置検出センサの目標値を第１制御部によって変化させるので、装置精度等による傾向的蛇行が発生したとしても、シートの処理工程部におけるシートの蛇行を抑制できる。 According to the present invention, the sheet meandering state is sensed by the second sheet position detecting sensor, and the target value of the first sheet position detecting sensor is changed by the first control unit according to the sheet meandering state. Even if the tendency meandering occurs, the meandering of the sheet in the sheet processing section can be suppressed.
　また、本発明のシート蛇行修正方法は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、シート蛇行修正ローラーと、前記シート蛇行修正ローラーを移動させる第２の駆動装置と、前記第１のシート位置検出センサを移動させる第３の駆動装置とを備えたシート搬送装置のシート蛇行修正方法である。本発明のシート蛇行修正方法は、前記第１のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する第１の工程と、前記第２のシート位置検出センサの検出結果に応じて前記第２の駆動装置を駆動する第２の工程と、前記第２の駆動装置の位置情報に応じて前記第３の駆動装置を駆動する第３の工程とからなる。 The sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor, A sheet meandering correction method for a sheet conveying apparatus, comprising: a sheet meandering correction roller; a second driving device for moving the sheet meandering correction roller; and a third driving device for moving the first sheet position detection sensor. is there. According to the sheet meandering correction method of the present invention, the first step of driving the first driving device according to the detection result of the first sheet position detection sensor, and the detection result of the second sheet position detection sensor. Accordingly, the second driving device is driven by the second step, and the third driving device is driven by the position information of the second driving device.
　また、本発明のシート蛇行修正方法は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、シート蛇行修正ローラーと、前記シート蛇行修正ローラーを移動させる第２の駆動装置と、前記第１のシート位置検出センサを移動させる第３の駆動装置とを備えたシート搬送装置のシート蛇行修正方法である。本発明のシート蛇行修正方法は、前記第１のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する第１の工程と、前記第２のシート位置検出センサの検出結果に応じて前記第２の駆動装置を駆動する第２の工程と、前記第２の駆動装置の位置情報に応じて前記第１の駆動装置をさらに駆動する第３の工程とからなる。 The sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor, A sheet meandering correction method for a sheet conveying apparatus, comprising: a sheet meandering correction roller; a second driving device for moving the sheet meandering correction roller; and a third driving device for moving the first sheet position detection sensor. is there. According to the sheet meandering correction method of the present invention, the first step of driving the first driving device according to the detection result of the first sheet position detection sensor, and the detection result of the second sheet position detection sensor. Accordingly, the second step of driving the second driving device and the third step of further driving the first driving device in accordance with position information of the second driving device.
　また、本発明のシート蛇行修正方法は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、前記第１のシート位置検出センサを移動させる第２の駆動装置とを備えたシート搬送装置のシート蛇行修正方法である。本発明のシート蛇行修正方法は、前記第１のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する第１の工程と、前記第２のシート位置検出センサの検出結果に応じて前記第２の駆動装置を駆動する第２の工程とからなる。 The sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor, A sheet meandering correction method for a sheet conveying apparatus, comprising: a second driving device that moves the first sheet position detection sensor. According to the sheet meandering correction method of the present invention, the first step of driving the first driving device according to the detection result of the first sheet position detection sensor, and the detection result of the second sheet position detection sensor. Accordingly, the second step of driving the second driving device is included.
　また、本発明のシート蛇行修正方法は、第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、前記第１のシート位置検出センサを移動させる第２の駆動装置とを備えたシート搬送装置のシート蛇行修正方法である。本発明のシート蛇行修正方法は、前記第２のシート位置検出センサの検出結果に応じて前記第１の駆動部を駆動する工程からなる。 The sheet meandering correction method of the present invention includes a first sheet position detection sensor, a sheet unwinding device, a first driving device that moves the sheet unwinding device, a second sheet position detection sensor, A sheet meandering correction method for a sheet conveying apparatus, comprising: a second driving device that moves the first sheet position detection sensor. The sheet meandering correction method of the present invention includes a step of driving the first drive unit in accordance with a detection result of the second sheet position detection sensor.
　本発明によれば、傾向的蛇行が発生したとしてもシートの蛇行を抑制でき、また、蛇行が不可能な状態に陥ることが少なくなる。 According to the present invention, even if a tendency meandering occurs, the meandering of the sheet can be suppressed, and it is less likely that the meandering is impossible.
　本発明の目的、特色、および利点は、下記の詳細な説明と図面とからより明確になるであろう。
本発明の第１の実施形態に係るシート搬送装置を示す概略図である。 本発明の第１の実施形態に係るシート搬送装置を示す斜視図である。 第１の駆動装置の動作を示すフローチャートである。 第１の制御部により第１の駆動装置を動作させたときの第１のシート位置検出センサの値と目標値との差分（偏差）ｅ１の推移を示す図である。 第２の駆動装置の動作を示すフローチャートである。 第２の制御部により第２の駆動装置を動作させたときの第２のシート位置検出センサの値と目標値との差分（偏差）ｅ２の推移を示す図である。 第２の制御部を用いなかった場合の第２のシート位置検出センサの値と目標値との差分（偏差）ｅ２の推移を示す図である。 第２の制御部を用いなかった場合の第２のシート位置検出センサの値と目標値との差分（偏差）に対し、第２の制御部により第２の駆動装置を動作させたときの第２の駆動装置の現在位置の推移を示す図である。 第２の駆動装置および第３の駆動装置の動作を示すフローチャートである。 本発明の第１の実施形態に係るシート搬送装置が間欠的な搬送を行う場合を示す斜視図である。 第１の駆動装置、第２の駆動装置および第３の駆動装置の動作を示すフローチャートである。 本発明の第２の実施形態に係るシート搬送装置を示す概略図である。 第２の駆動装置および第３の駆動装置の動作を示すフローチャートである。 本発明の第３の実施形態に係るシート搬送装置を示す斜視図である。 Objects, features, and advantages of the present invention will become more apparent from the following detailed description and drawings.
1 is a schematic diagram illustrating a sheet conveying apparatus according to a first embodiment of the present invention. 1 is a perspective view showing a sheet conveying apparatus according to a first embodiment of the present invention. It is a flowchart which shows operation | movement of a 1st drive device. It is a figure which shows transition of the difference (deviation) e1 of the value of a 1st sheet | seat position detection sensor and target value when a 1st drive part is operated by the 1st control part. It is a flowchart which shows operation | movement of a 2nd drive device. It is a figure which shows transition of the difference (deviation) e2 between the value of the 2nd sheet | seat position detection sensor when a 2nd drive part is operated by the 2nd control part, and a target value. It is a figure showing change of difference (deviation) e2 between the value of the 2nd sheet position detection sensor at the time of not using the 2nd control part, and a target value. When the second controller is operated by the second controller with respect to the difference (deviation) between the value of the second sheet position detection sensor and the target value when the second controller is not used, It is a figure which shows transition of the present position of 2 drive devices. It is a flowchart which shows operation | movement of a 2nd drive device and a 3rd drive device. FIG. 5 is a perspective view illustrating a case where the sheet conveying apparatus according to the first embodiment of the present invention performs intermittent conveyance. It is a flowchart which shows operation | movement of a 1st drive device, a 2nd drive device, and a 3rd drive device. It is the schematic which shows the sheet conveying apparatus which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows operation | movement of a 2nd drive device and a 3rd drive device. It is a perspective view which shows the sheet conveying apparatus which concerns on the 3rd Embodiment of this invention.
　以下図面を参考にして本発明の好適な実施形態を詳細に説明する。
　本発明の実施形態について、光学シートを例にして以下に説明する。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
Embodiments of the present invention will be described below using an optical sheet as an example.
　（第１の実施形態）
　本発明の第１の実施形態における光学シートのシート搬送装置１００について説明する。図１は、該光学シートの搬送装置１００を示す概略図であり、図２は、該光学シートの搬送装置１００を示す斜視図である。図中、１は材料ロール、２は上流側シート、３は材料ロール軸、４はシート蛇行修正ローラー、５はアイドラ、６は下流側シート、１０は第１の駆動装置、２０は第２の駆動装置、３０は第３の駆動装置、４０は第１のシート位置検出センサ、５０は第２のシート位置検出センサを表す。 (First embodiment)
An optical sheet conveying apparatus 100 according to a first embodiment of the present invention will be described. FIG. 1 is a schematic view showing the optical sheet conveying apparatus 100, and FIG. 2 is a perspective view showing the optical sheet conveying apparatus 100. In the figure, 1 is a material roll, 2 is an upstream sheet, 3 is a material roll shaft, 4 is a sheet meandering correction roller, 5 is an idler, 6 is a downstream sheet, 10 is a first driving device, and 20 is a second The driving device, 30 is a third driving device, 40 is a first sheet position detection sensor, and 50 is a second sheet position detection sensor.
　材料ロール１は光を拡散する拡散シート、集光するプリズムシートなどの光学シートがロール状に巻かれたものである。光学シートを保護するためのラミネータが表面または裏面、もしくは両面に貼り付けられた状態のものでも良い。 The material roll 1 is a roll of optical sheets such as a diffusion sheet for diffusing light and a prism sheet for condensing light. A laminator for protecting the optical sheet may be attached to the front surface, the back surface, or both surfaces.
　材料ロール１は光学シートのみならず、搬送用のキャリアシートや、シート打抜に使用される刃当てシートなど、各種薄膜状シートがロール状に巻かれたものでも良い。 The material roll 1 is not limited to an optical sheet, but may be a roll of various thin film sheets such as a carrier sheet for conveyance and a blade contact sheet used for sheet punching.
　上流側シート２は材料ロール１から巻出された状態のシートである。材料ロール１にラミネータが貼り付けられた状態のものであった場合、図示しない剥離装置によりラミネータは剥離されている。 The upstream sheet 2 is a sheet unwound from the material roll 1. When the laminator is attached to the material roll 1, the laminator is peeled off by a peeling device (not shown).
　材料ロール軸３は材料ロール１を固定するための軸であり、また材料ロール１を巻出すために図示しない駆動装置により軸方向に回転する機構を有している。さらに材料ロール１の巻状態を検知し、巻出しの回転速度を変化させる機能を有している。材料ロール軸３と図示しない駆動装置とによって、シート巻出し装置が構成される。 The material roll shaft 3 is a shaft for fixing the material roll 1, and has a mechanism that rotates in the axial direction by a driving device (not shown) to unwind the material roll 1. Furthermore, it has a function of detecting the winding state of the material roll 1 and changing the rotation speed of unwinding. The material roll shaft 3 and a drive device (not shown) constitute a sheet unwinding device.
　シート蛇行修正ローラー４は後述する下流側シート６が巻きつけられたローラーである。シート蛇行修正ローラー４と下流側シート６との摩擦により、シート蛇行修正ローラー４が動作すると下流側シート６がそれに伴って動作し、下流側シート６の蛇行を修正する。 The sheet meandering correction roller 4 is a roller around which a downstream sheet 6 described later is wound. When the sheet meandering correction roller 4 operates due to the friction between the sheet meandering correction roller 4 and the downstream side sheet 6, the downstream side sheet 6 operates accordingly, and the meandering of the downstream side sheet 6 is corrected.
　アイドラ５はシートに対し従動回転する軸である。シートの搬送経路生成のためや、シートに張力を付加するために使用される。 The idler 5 is a shaft that rotates following the seat. This is used to generate a sheet conveyance path or to apply tension to the sheet.
　下流側シート６は図示しない処理工程部付近のシートである。処理工程としては裁断・打抜など各種のシート処理工程があり、シート搬送の目的はこの処理工程にある。そのため、処理工程部でシートが蛇行しないようにするのが蛇行修正の１番の目的である。 The downstream sheet 6 is a sheet in the vicinity of the processing step (not shown). The processing process includes various sheet processing processes such as cutting and punching, and the purpose of sheet conveyance is in this processing process. Therefore, the first purpose of the meander correction is to prevent the sheet from meandering in the processing step section.
　第１の駆動装置１０は材料ロール軸３を軸方向に動作させることにより、材料ロール１を軸方向に動作させることを目的としたものである。 The first drive device 10 is intended to move the material roll 1 in the axial direction by moving the material roll shaft 3 in the axial direction.
　第２の駆動装置２０はシート蛇行修正ローラー４を軸方向に動作させることにより、シート２を軸方向に動作させることを目的としたものである。 The second drive device 20 is intended to operate the sheet 2 in the axial direction by operating the sheet meandering correction roller 4 in the axial direction.
　第３の駆動装置３０は後述する第１のシート位置検出センサ４０を動作させることを目的としたものである。 The third driving device 30 is intended to operate a first sheet position detection sensor 40 described later.
　第１の駆動装置１０、第２の駆動装置２０、および第３の駆動装置３０はサーボモータ、ボールネジなど従来公知の各種駆動装置を用いることができる。 For the first driving device 10, the second driving device 20, and the third driving device 30, various conventionally known driving devices such as a servo motor and a ball screw can be used.
　第１のシート位置検出センサ４０は材料ロール１の巻き出し後の上流側シート２のエッジ部分を検出するためのセンサである。 The first sheet position detection sensor 40 is a sensor for detecting the edge portion of the upstream sheet 2 after the material roll 1 is unwound.
　第２のシート位置検出センサ５０は下流側シート６のエッジ部分を検出するためのセンサである。 The second sheet position detection sensor 50 is a sensor for detecting the edge portion of the downstream sheet 6.
　第１のシート位置検出センサ４０、および第２のシート位置検出センサ５０は光電センサ、透過センサなど、従来公知の各種検出センサを用いることができる。 As the first sheet position detection sensor 40 and the second sheet position detection sensor 50, various conventionally known detection sensors such as a photoelectric sensor and a transmission sensor can be used.
　本実施形態における第１の駆動装置１０の動作を図３に示したフローチャートをもとに説明する。 The operation of the first drive device 10 in this embodiment will be described based on the flowchart shown in FIG.
　まず、ステップａ１において、第１のシート位置検出センサ４０の値と目標値との差分（偏差）ｅ１を入力とし、第１の制御部３５により演算し、制御出力ｕ１を求める。次に、ステップａ２において、第１の制御部３５の制御出力ｕ１を基に、第１の駆動装置１０を動作させる。 First, in step a1, the difference (deviation) e1 between the value of the first sheet position detection sensor 40 and the target value is input and is calculated by the first control unit 35 to obtain the control output u1. Next, in step a2, the first drive device 10 is operated based on the control output u1 of the first control unit 35.
　これによって、材料ロール軸３は上流側シート２が蛇行している方向と反対方向に動作し、それに取り付けられている材料ロール１は上流側シート２が蛇行している方向と反対方向に動作する。そのため、上流側シート２が蛇行していたとしても、上流側シート２のエッジは目標とする位置に移動する。 As a result, the material roll shaft 3 operates in a direction opposite to the direction in which the upstream sheet 2 is meandering, and the material roll 1 attached thereto operates in a direction opposite to the direction in which the upstream sheet 2 is meandering. . Therefore, even if the upstream sheet 2 meanders, the edge of the upstream sheet 2 moves to the target position.
　第１の制御部３５としては、従来公知の各種制御を用いることができる。本実施形態においてはＰＩＤ制御を用いている。ＰＩＤ制御はＫ１ｐ、Ｋ１ｉ、Ｋ１ｄを制御定数、Δｔを制御周期、第１のシート位置検出センサ４０の値と目標値との差分（偏差）をｅ１、制御出力をｕ１、時定数をｎとして、以下の式で表される。 As the first control unit 35, various conventionally known controls can be used. In this embodiment, PID control is used. In PID control, K1p, K1i, and K1d are control constants, Δt is a control period, a difference (deviation) between the value of the first sheet position detection sensor 40 and a target value is e1, a control output is u1, a time constant is n, It is expressed by the following formula.
Figure JPOXMLDOC01-appb-M000001
Figure JPOXMLDOC01-appb-M000001
　制御定数Ｋ１ｐ、Ｋ１ｉ、Ｋ１ｄ、制御周期Δｔについては、材料ロール１から第１のシート位置検出センサ４０までの距離および材料ロール１の巻き出し速度、幅、材質などによって効果的な値を選択する必要がある。 For the control constants K1p, K1i, K1d, and the control cycle Δt, effective values are selected depending on the distance from the material roll 1 to the first sheet position detection sensor 40, the unwinding speed, width, material, and the like of the material roll 1. There is a need.
　なお、シートの搬送が連続的である場合においてΔｔは時間となり、上記制御をΔｔ秒に１回の頻度で行う。また、シートの搬送が間欠的である場合にはΔｔは巻き出し回数となり、上記制御を巻き出し回数Δｔ回に１回の頻度で行う。 Note that Δt is time when the sheet is continuously conveyed, and the above control is performed once every Δt seconds. Further, when the sheet is intermittently conveyed, Δt is the number of unwinding times, and the above control is performed once every unwinding number of times Δt.
　シートの搬送が間欠的である場合における、第１のシート位置検出センサ４０の値と目標値との差分（偏差）ｅ１の推移を図４に示す。上流側シート２の巻き出し位置を１．５［ｍｍ］軸方向にずらしてシート搬送を行ったところ、シート巻き出し回数が１０回程度で目標値に収束した。その後、偏差ｅ１は±０．２０［ｍｍ］以内の範囲で安定して推移した。 FIG. 4 shows the transition of the difference (deviation) e1 between the value of the first sheet position detection sensor 40 and the target value when the sheet conveyance is intermittent. When the sheet was conveyed while the unwinding position of the upstream sheet 2 was shifted in the 1.5 [mm] axial direction, the number of sheet unwinding was about 10 and converged to the target value. Thereafter, the deviation e1 stably changed within a range of ± 0.20 [mm].
　このように、上流側シート２のエッジ位置を第１のシート位置検出センサ４０で検出し、第１の駆動装置１０を第１の制御部３５によって動作させることにより、上流側シート２の蛇行が修正される。 In this way, the edge position of the upstream sheet 2 is detected by the first sheet position detection sensor 40 and the first drive device 10 is operated by the first control unit 35, whereby the meandering of the upstream sheet 2 is performed. Will be corrected.
　次に、第２の駆動装置２０の動作を図５に示したフローチャートをもとに説明する。 Next, the operation of the second drive unit 20 will be described based on the flowchart shown in FIG.
　まず、ステップｂ１において、第２の制御部動作条件ｐ［ｍｍ］を設定する。この第２の制御部動作条件ｐの値はどの程度まで蛇行が許されるかの値であり、処理工程によって必要な精度によって決定する。特に精度が必要とされる場合、ｐ＝０．０００［ｍｍ］であり、シート搬送ごとに第２の制御部４５が動作する。 First, in step b1, a second control unit operating condition p [mm] is set. The value of the second control unit operating condition p is a value of how much meandering is allowed, and is determined according to the accuracy required by the processing steps. In particular, when accuracy is required, p = 0.000 [mm], and the second control unit 45 operates for each sheet conveyance.
　ステップｂ２において、｜ｅ２｜＞ｐとなった場合、ステップｂ３において、偏差ｅ２を入力とし、第２の制御部４５により演算し、制御出力ｕ２を求める。次に、ステップｂ４において、第２の制御部４５の制御出力ｕ２を基に、第２の駆動装置２０を動作させる。 In step b2, when | e2 |> p is satisfied, in step b3, the deviation e2 is input and is calculated by the second control unit 45 to obtain the control output u2. Next, in step b4, the second driving device 20 is operated based on the control output u2 of the second control unit 45.
　これによって、シート蛇行修正ローラー４は下流側シート６が蛇行している方向と反対方向に動作し、シート蛇行修正ローラー４と下流側シート６との摩擦力によって、それに掛けられている下流側シート６は下流側シート６が蛇行している方向と反対方向に動作する。そのため、下流側シート６が蛇行していたとしても、下流側シート６のエッジは目標とする位置に移動する。 Accordingly, the sheet meandering correction roller 4 operates in a direction opposite to the direction in which the downstream side sheet 6 meanders, and the downstream side sheet applied thereto by the frictional force between the sheet meandering correction roller 4 and the downstream side sheet 6. 6 operates in a direction opposite to the direction in which the downstream sheet 6 is meandering. Therefore, even if the downstream sheet 6 meanders, the edge of the downstream sheet 6 moves to a target position.
　ステップｂ２において、｜ｅ２｜≦ｐとなった場合は、第２の駆動装置２０を動作させない。つまり、下流側シート６が許容蛇行範囲内にある場合は、蛇行修正を行わない。 In step b2, if | e2 | ≦ p, the second drive device 20 is not operated. That is, when the downstream sheet 6 is within the allowable meandering range, no meandering correction is performed.
　第２の制御部４５としては、従来公知の各種制御を用いることができる。本実施形態においてはＰＩＤ制御を用いている。ＰＩＤ制御はＫ２ｐ、Ｋ２ｉ、Ｋ２ｄを制御定数、Δｔを制御周期、第２のシート位置検出センサ５０の値と目標値との差分（偏差）をｅ２、制御出力をｕ２、時定数をｎとして、以下の式で表される。 As the second control unit 45, various conventionally known controls can be used. In this embodiment, PID control is used. In PID control, K2p, K2i, and K2d are control constants, Δt is a control period, a difference (deviation) between the value of the second sheet position detection sensor 50 and a target value is e2, a control output is u2, a time constant is n, It is expressed by the following formula.
Figure JPOXMLDOC01-appb-M000002
Figure JPOXMLDOC01-appb-M000002
　制御定数Ｋ２ｐ、Ｋ２ｉ、Ｋ２ｄ、制御周期Δｔについては、シート２の送り速度、幅、材質などによって効果的な値を選択する必要がある。 It is necessary to select effective values for the control constants K2p, K2i, K2d, and the control cycle Δt depending on the feed speed, width, material, and the like of the sheet 2.
　なお、シートの搬送が連続的である場合においてΔｔは時間となり、上記制御をΔｔ秒に１回の頻度で行う。また、シートの搬送が間欠的である場合にはΔｔは搬送回数となり、上記制御を搬送回数Δｔ回に１回の頻度で行う。 Note that Δt is time when the sheet is continuously conveyed, and the above control is performed once every Δt seconds. If the sheet is intermittently conveyed, Δt is the number of conveyances, and the above control is performed at a frequency of once every conveyance number Δt.
　シートの搬送が間欠的である場合における、第２のシート位置検出センサ５０の値と目標値との差分（偏差）ｅ２の推移を図６に示す。下流側シート６の偏差ｅ２が±０．５［ｍｍ］以上存在する状態で上記制御を用いてシート搬送を行ったところ、偏差ｅ２は±０．１０［ｍｍ］以内の範囲で安定して推移した（第２の制御部動作条件ｐ＝０の場合）。 FIG. 6 shows the transition of the difference (deviation) e2 between the value of the second sheet position detection sensor 50 and the target value when the sheet conveyance is intermittent. When the sheet conveyance is performed using the above control in a state where the deviation e2 of the downstream side sheet 6 is ± 0.5 [mm] or more, the deviation e2 changes stably within a range of ± 0.10 [mm]. (When the second control unit operating condition p = 0).
　第２の制御部動作条件ｐ＝０の場合、偏差が例え±０．００１［ｍｍ］のような極小なものであったとしても、第２の駆動装置２０が動作するため、長時間装置を稼動させていると第２の駆動装置２０がストロークエンドに達することがある。そのため、ある一定以下の偏差において第２の駆動装置２０を動作させないように制御動作条件ｐの値を決定することにより、第２の駆動装置２０がストロークエンドに達することが少なくなる。 When the second control unit operating condition p = 0, even if the deviation is as small as ± 0.001 [mm], the second driving device 20 operates, so that the long-time device is When operating, the second drive unit 20 may reach the stroke end. Therefore, by determining the value of the control operation condition p so that the second drive device 20 is not operated at a certain deviation or less, the second drive device 20 is less likely to reach the stroke end.
　上記第２の制御部動作条件ｐは、許容するシートの蛇行量の値を入力することが望ましい。つまり、許容するシートの蛇行量の値を超えたときのみ、第２の駆動装置２０が動作するようにする。 As the second control unit operating condition p, it is desirable to input an allowable value of the meandering amount of the sheet. That is, the second driving device 20 is operated only when the value of the allowable meandering amount of the sheet is exceeded.
　例として上記制御を行わなかった場合の下流側シート６の偏差ｅ２の推移を図７に示す。これは最大偏差＋０．２０［ｍｍ］、平均偏差＋０．１０［ｍｍ］の蛇行があり、ｐ＝０．００［ｍｍ］として上記制御を行って図６のように平均偏差を０．００［ｍｍ］にすると、図８のように第２の駆動装置２０の位置が推移する。そのため、第２の駆動装置２０がストロークエンドに徐々に近付いていく。 As an example, FIG. 7 shows the transition of the deviation e2 of the downstream seat 6 when the above control is not performed. This has meandering of maximum deviation +0.20 [mm] and average deviation +0.10 [mm]. The above control is performed with p = 0.00 [mm], and the average deviation is 0.00 [ mm], the position of the second drive device 20 changes as shown in FIG. Therefore, the second driving device 20 gradually approaches the stroke end.
　そこで、許容蛇行量を０．２０［ｍｍ］とし、ｐ＝０．２０［ｍｍ］として上記制御を行うと、蛇行量がｐ以下のため上記制御が行われない。そのため、第２の駆動装置２０は動作せず、ストロークエンドに到達することはない。 Therefore, when the above control is performed with the allowable meandering amount being 0.20 [mm] and p = 0.20 [mm], the above control is not performed because the meandering amount is p or less. Therefore, the second driving device 20 does not operate and does not reach the stroke end.
　このように、下流側シート６のエッジ位置を第２のシート位置検出センサ５０で検出し、第２の駆動装置２０を第２の制御部４５によって動作させることにより、下流側シート６の蛇行が修正される。 In this way, the edge position of the downstream sheet 6 is detected by the second sheet position detection sensor 50 and the second drive unit 20 is operated by the second control unit 45, whereby the downstream sheet 6 is meandered. Will be corrected.
　第２の駆動装置２０および第３の駆動装置３０の動作を図９に示したフローチャートをもとに説明する。図９における第２の駆動装置２０の動作ステップｃ２およびｃ４～ｃ６については上述した図５のステップｂ１～ｂ４と同様である。 The operation of the second drive device 20 and the third drive device 30 will be described with reference to the flowchart shown in FIG. The operation steps c2 and c4 to c6 of the second drive device 20 in FIG. 9 are the same as the steps b1 to b4 in FIG. 5 described above.
　まず、ステップｃ１において、第３の制御部動作条件ｋを設定する。この第３の制御部動作条件ｋの値はシートの搬送が連続的である場合においては時間ｍとなり、ステップｃ３～ｃ７を経て、第３の駆動装置３０をｋ秒に１回の頻度で動作させる。また、シートの搬送が間欠的である場合にはｋは搬送回数ｍとなり、ステップｃ３～ｃ７を経て、第３の駆動装置３０をｋ回に１回の頻度で動作させる。 First, in step c1, a third control unit operating condition k is set. The value of the third control unit operating condition k is time m when the sheet is continuously conveyed, and the third driving device 30 is operated at a frequency of once every k seconds through steps c3 to c7. Let Further, when the sheet is conveyed intermittently, k is the number of conveyance m, and the third driving device 30 is operated at a frequency of once every k times through steps c3 to c7.
　ステップｃ７において、時間ｍ（または搬送回数ｍ）がｋと等しくなったとき、ステップｃ８において、第２の駆動装置２０の現在位置と初期位置との差分（偏差）ｅ３を入力とし、第３の制御部５５により演算し、制御出力ｕ３を求める。次に、ステップｃ９において、第３の制御部５５の制御出力ｕ３を基に、第３の駆動装置３０を動作させる。その後、ステップｃ１０において、ｍを０にリセットし、ステップｃ４に戻る。 In step c7, when the time m (or the number of conveyances m) becomes equal to k, in step c8, the difference (deviation) e3 between the current position and the initial position of the second drive device 20 is input, and the third The control unit 55 calculates and obtains the control output u3. Next, in Step c9, the third drive device 30 is operated based on the control output u3 of the third control unit 55. Thereafter, in step c10, m is reset to 0, and the process returns to step c4.
　これによって、第１のシート位置検出センサ４０が軸方向に動作する。そのため、第１の駆動装置１０が上述したように動作することにより、上流側シート２が第２の駆動装置２０の動作方向と反対方向に動作する。よって第２の駆動装置２０が同方向にばかり動作することを防ぐことができ、第２の駆動装置２０のストローク範囲が小さく抑えられる。 Thereby, the first sheet position detection sensor 40 operates in the axial direction. Therefore, when the first drive device 10 operates as described above, the upstream seat 2 operates in the direction opposite to the operation direction of the second drive device 20. Therefore, the second drive device 20 can be prevented from operating only in the same direction, and the stroke range of the second drive device 20 can be kept small.
　第３の制御部５５としては、従来公知の各種制御を用いることができる。本実施形態においては比例制御を用いている。比例制御はＫ３ｐを制御定数、ｋを制御周期、第２の駆動装置２０の現在位置と初期位置との差分（偏差）をｅ３、制御出力をｕ３、時定数をｎとして、以下の式で表される。 As the third control unit 55, various conventionally known controls can be used. In this embodiment, proportional control is used. Proportional control is expressed by the following equation, where K3p is a control constant, k is a control period, the difference (deviation) between the current position and the initial position of the second drive unit 20 is e3, the control output is u3, and the time constant is n. Is done.
Figure JPOXMLDOC01-appb-M000003
Figure JPOXMLDOC01-appb-M000003
　制御定数Ｋ３ｐおよび制御周期ｋについては、第１のシート位置検出センサ４０と第２の駆動装置２０との距離および、シート２の送り速度、幅、材質などによって効果的な値を選択する必要がある。 For the control constant K3p and the control cycle k, it is necessary to select effective values depending on the distance between the first sheet position detection sensor 40 and the second driving device 20, the feed speed, width, material, and the like of the sheet 2. is there.
　また、第３の駆動装置３０を動作させる代わりに、第１のシート位置検出センサ４０の目標値をｕ３だけ変化させることでも同様の効果が得られる。 Further, the same effect can be obtained by changing the target value of the first sheet position detection sensor 40 by u3 instead of operating the third driving device 30.
　第１のシート位置検出センサ４０の検出範囲をＨ［ｍｍ］とすると、通常最大の効果を発揮させるため検出範囲の中心値であるＨ／２［ｍｍ］を目標値に設定する。これによって上流側シート２の蛇行は±Ｈ／２［ｍｍ］まで検出できる。 If the detection range of the first sheet position detection sensor 40 is H [mm], the center value of the detection range, H / 2 [mm], is normally set as a target value in order to exert the maximum effect. As a result, the meandering of the upstream sheet 2 can be detected up to ± H / 2 [mm].
　ここで、第３の制御部５５の結果を受けてｕ３（ｕ３＞０）だけ第１のシート位置検出センサ４０の目標値を変化させる。すると第１のシート位置検出センサ４０の目標値はＨ／２＋ｕ３［ｍｍ］となり、上流側シート２の最大蛇行検出量がｕ３［ｍｍ］減少してＨ／２－ｕ３［ｍｍ］となる。 Here, in response to the result of the third control unit 55, the target value of the first sheet position detection sensor 40 is changed by u3 (u3> 0). Then, the target value of the first sheet position detection sensor 40 is H / 2 + u3 [mm], and the maximum meandering detection amount of the upstream side sheet 2 is decreased by u3 [mm] to H / 2−u3 [mm].
　そのため、上流側シート２がこの検出量が減少した方向に対する蛇行に弱くなってしまう可能性がある。しかし、ソフトウェアの変更のみで制御可能なため、こちらの制御方法が有効な場合もある。これは第１のシート位置検出センサ４０の検出範囲と上流側シート２との蛇行量との関係でどちらかを採用するか、もしくはそれらを併用しても良い。 Therefore, there is a possibility that the upstream side sheet 2 is vulnerable to meandering in the direction in which the detected amount decreases. However, this control method may be effective because it can be controlled only by changing the software. Either one of these may be adopted depending on the detection range of the first sheet position detection sensor 40 and the amount of meandering of the upstream side sheet 2, or they may be used in combination.
　また、第２の駆動装置２０の現在位置がストロークエンド付近に到達した場合の対策について説明する。図１０は、本実施形態に係るシート搬送装置が間欠的な搬送を行う場合を示す斜視図である。図中において、６０はシート搬送機構、７０はシート押さえ、８０はシート打抜機、９０はシート打抜台を表す。 Also, a countermeasure when the current position of the second driving device 20 reaches near the stroke end will be described. FIG. 10 is a perspective view illustrating a case where the sheet conveying apparatus according to the present embodiment performs intermittent conveyance. In the figure, 60 is a sheet conveying mechanism, 70 is a sheet presser, 80 is a sheet punching machine, and 90 is a sheet punching table.
　シート搬送機構６０はシートを間欠的に搬送するためにシートを把持し、一定距離搬送するための機構である。一定距離搬送後はシートの把持をやめ、初期位置に戻る。シートが連続的に搬送される場合、シート搬送機構６０はシートを把持するのみである。 The sheet conveying mechanism 60 is a mechanism for holding a sheet to convey the sheet intermittently and conveying it for a certain distance. After conveying for a certain distance, the gripping of the sheet is stopped and the initial position is restored. When the sheets are continuously conveyed, the sheet conveying mechanism 60 only holds the sheet.
　シート押さえ７０は下流側シート６を固定し動かなくするものである。
　シート打抜機８０は下流側シート６を打抜くものであって、図示しない駆動源および打抜刃を有している。打抜刃は直線状に伸びた帯状の形状を有した刃が特定の形状、例えば矩形になっており、下流側シート６の搬送方向に対し略垂直となるように配置されている。打抜刃としては、従来公知のものを採用することができ、具体的には、例えばトムソン刃、ピナクル刃、彫刻刃等が例示できる。 The sheet presser 70 fixes and prevents the downstream sheet 6 from moving.
The sheet punching machine 80 punches the downstream sheet 6 and has a drive source and a punching blade (not shown). The punching blade has a belt-like shape extending in a straight line and has a specific shape, for example, a rectangular shape, and is arranged so as to be substantially perpendicular to the conveyance direction of the downstream sheet 6. As the punching blade, a conventionally known one can be adopted, and specifically, for example, a Thomson blade, a pinnacle blade, an engraving blade and the like can be exemplified.
　シート打抜台９０は、下流側シート６をシート打抜機８０により打抜く際に、下流側シート６を載置するための基台である。シート打抜台９０の載置面は、下流側シート６の搬送方向に対し平行である平面形状となっている。 The sheet punching table 90 is a base on which the downstream sheet 6 is placed when the downstream sheet 6 is punched by the sheet punching machine 80. The placement surface of the sheet punching table 90 has a planar shape that is parallel to the conveyance direction of the downstream sheet 6.
　第１の駆動装置１０、第２の駆動装置２０および第３の駆動装置３０の動作を図１１に示したフローチャートをもとに説明する。図１１における第１の駆動装置１０の動作ステップｄ５およびｄ６については上述した図３のステップａ１およびａ２と同様である。また図１１における第２の駆動装置の動作ステップｄ２およびｄ７～ｄ９については上述した図５のステップｂ１～ｂ４と同様である。さらに図１１における第３の駆動装置の動作ステップｄ１、ｄ４およびｄ１３～ｄ１６については、上述した図９のステップｃ１、ｃ３およびｃ７～ｃ１０と同様である。 The operation of the first drive device 10, the second drive device 20, and the third drive device 30 will be described based on the flowchart shown in FIG. The operation steps d5 and d6 of the first drive device 10 in FIG. 11 are the same as the steps a1 and a2 in FIG. 3 described above. Further, the operation steps d2 and d7 to d9 of the second driving device in FIG. 11 are the same as the steps b1 to b4 in FIG. 5 described above. Further, the operation steps d1, d4 and d13 to d16 of the third driving device in FIG. 11 are the same as the above-described steps c1, c3 and c7 to c10 in FIG.
　まず、ステップｄ３において、第２の駆動部初期化条件ｑ［ｍｍ］を設定する。この第２の駆動部初期化条件ｑの値は第２の駆動部２０のストローク内で設定する値である。この値が大きいと第２の駆動部を初期化する頻度は低くなるが、初期化に要する時間が長くなる。この値が小さいと初期化に要する時間は短いが、第２の駆動部を初期化する頻度が高くなる。シートの蛇行量、第２の駆動部２０のストローク範囲を考慮して最適な値を選ぶ必要がある。 First, in step d3, a second drive unit initialization condition q [mm] is set. The value of the second drive unit initialization condition q is a value set within the stroke of the second drive unit 20. If this value is large, the frequency of initializing the second drive unit is low, but the time required for initialization becomes long. When this value is small, the time required for initialization is short, but the frequency of initializing the second drive unit is high. It is necessary to select an optimum value in consideration of the meandering amount of the sheet and the stroke range of the second drive unit 20.
　ステップｄ１０において、｜ｅ３｜＞ｑとなった場合、ステップｄ１１において、シート搬送機構６０がシート蛇行修正ローラー４を通過する前のシートを把持し、シート押さえ７０がシート蛇行修正ローラー４を通過した後のシートを押さえる。これによってシート搬送機構６０とシート押さえ７０との間のシートが固定される。 In step d10, if | e3 |> q, in step d11, the sheet conveyance mechanism 60 grips the sheet before passing the sheet meandering correction roller 4, and the sheet presser 70 passes the sheet meandering correction roller 4. Hold the back sheet. As a result, the sheet between the sheet conveying mechanism 60 and the sheet presser 70 is fixed.
　その後、図示しない駆動部によってシート蛇行修正ローラー４を下流側シート６の張力を下げる方向に動作させる。するとシートが固定されているために、シート蛇行修正ローラー４と下流側シート６の摩擦力が減る、もしくはなくなる。そのためシート蛇行修正ローラー４を軸方向に移動させたとしても、それに掛けられている下流側シート６が動かなくなる。 Thereafter, the sheet meandering correction roller 4 is operated in a direction to lower the tension of the downstream side sheet 6 by a drive unit (not shown). Then, since the sheet is fixed, the frictional force between the sheet meandering correction roller 4 and the downstream sheet 6 is reduced or eliminated. Therefore, even if the sheet meandering correction roller 4 is moved in the axial direction, the downstream side sheet 6 hung thereon does not move.
　シート蛇行修正ローラー４をその状態にした後、ステップｄ１２において、第２の駆動装置２０を初期位置まで戻す動作を行う。これによって下流側シート６の幅方向の位置は変わらずに、第２の駆動装置２０の動作位置を初期化することができ、ストロークエンドに到達することがなくなり、シート搬送装置がエラーで止まることがなくなる。 After the sheet meandering correction roller 4 is in that state, in step d12, the second driving device 20 is returned to the initial position. As a result, the position of the downstream sheet 6 in the width direction is not changed, and the operation position of the second driving device 20 can be initialized, the stroke end is not reached, and the sheet conveying device stops due to an error. Disappears.
　その後、シート搬送機構６０の把持、シート押さえ７０の押さえを解除し、シート搬送を再開する。 Thereafter, gripping of the sheet transport mechanism 60 and release of the sheet presser 70 are released, and sheet transport is resumed.
　このように動作させることにより、上流側シート２および下流側シート６の蛇行が修正され、第２の駆動装置２０がストロークエンドに到達することがなくなる。 By operating in this way, the meandering of the upstream seat 2 and the downstream seat 6 is corrected, and the second drive device 20 does not reach the stroke end.
　（第２の実施形態）
　本発明の第２の実施形態における光学シートのシート搬送装置２００について説明する。図１２は、該光学シートの搬送装置２００を示す概略図である。本実施形態において、第１の実施形態と共通する部分については同一の参照符を付し、説明を省略する。 (Second Embodiment)
An optical sheet conveying apparatus 200 according to a second embodiment of the present invention will be described. FIG. 12 is a schematic view showing the optical sheet conveying apparatus 200. In the present embodiment, parts that are the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
　第２の実施形態の光学シートの搬送装置２００は、第１実施形態の光学シートの搬送装置１００の構成に類似し、第２の制御部４５および第３の制御部５５の代わりに、第４の制御部６５を備えている。 The optical sheet conveying apparatus 200 according to the second embodiment is similar to the configuration of the optical sheet conveying apparatus 100 according to the first embodiment, and includes a fourth control unit 45 instead of the second control unit 45 and the third control unit 55. The control part 65 is provided.
　第２の実施形態における第１の駆動装置１０の動作については第１の実施形態と同様である。第３の駆動装置３０の動作を図１３に示したフローチャートをもとに説明する。 The operation of the first drive device 10 in the second embodiment is the same as that in the first embodiment. The operation of the third drive device 30 will be described based on the flowchart shown in FIG.
　まず、ステップｅ１において、第４の制御部動作条件ｋを設定する。この第４の制御部動作条件ｋの値はシートの搬送が連続的である場合においては時間ｍとなり、ステップｅ２およびｅ３を経て、第３の駆動装置３０をｋ秒に１回の頻度で動作させる。また、シートの搬送が間欠的である場合にはｋは搬送回数ｍとなり、ステップｅ２およびｅ３を経て、第３の駆動装置３０をｋ回に１回の頻度で動作させる。 First, in step e1, a fourth control unit operating condition k is set. The value of the fourth control unit operation condition k is time m when the sheet is continuously conveyed, and the third driving device 30 is operated at a frequency of once every k seconds through steps e2 and e3. Let Further, when the sheet is conveyed intermittently, k is the number m of conveyance, and the third driving device 30 is operated at a frequency of once every k times through steps e2 and e3.
　ステップｅ３において、搬送回数ｍ（または時間ｍ）がｋと等しくなったとき、ステップｅ４において、第２のシート位置検出センサ５０の値と目標値との差分（偏差）ｅ２のｋ回（秒）当たりの平均値ｅ４を入力とし、第４の制御部６５により演算し、制御出力ｕ４を求める。ここで、ｅ４は以下の式で表される。 In step e3, when the number of conveyances m (or time m) becomes equal to k, in step e4, the difference (deviation) e2 between the value of the second sheet position detection sensor 50 and the target value is k times (seconds). The hit average value e4 is input, and the fourth control unit 65 calculates the value to obtain the control output u4. Here, e4 is expressed by the following equation.
Figure JPOXMLDOC01-appb-M000004
Figure JPOXMLDOC01-appb-M000004
　次に、ステップｅ５において、第４の制御部６５の制御出力ｕ４を基に、第３の駆動装置３０を動作させる。その後、ステップｅ６において、ｍを０にリセットし、ステップｅ３に戻る。 Next, in step e5, the third driving device 30 is operated based on the control output u4 of the fourth control unit 65. Thereafter, in step e6, m is reset to 0, and the process returns to step e3.
　これによって、第１のシート位置検出センサ４０が軸方向に動作する。そのため、第１の駆動装置１０が上述したように動作することにより、上流側シート２が下流側シート６の蛇行方向と反対方向に動作する。そのため、下流側シート６が蛇行していたとしても、下流側シート６のエッジは目標とする位置に移動する。 Thereby, the first sheet position detection sensor 40 operates in the axial direction. Therefore, when the first driving device 10 operates as described above, the upstream sheet 2 operates in a direction opposite to the meandering direction of the downstream sheet 6. Therefore, even if the downstream sheet 6 meanders, the edge of the downstream sheet 6 moves to a target position.
　第４の制御部６５としては、従来公知の各種制御を用いることができる。本実施形態においては比例制御を用いている。比例制御はＫ４ｐを制御定数、ｋを制御周期、第２のシート位置検出センサの値と目標値との差分（偏差）ｅ２のｋ秒（回）当たりの平均値をｅ４、制御出力をｕ４、時定数をｎとして、以下の式で表される。 As the fourth control unit 65, various conventionally known controls can be used. In this embodiment, proportional control is used. In the proportional control, K4p is a control constant, k is a control cycle, the difference (deviation) between the value of the second sheet position detection sensor and the target value e2 is an average value per k seconds (times), e4, and the control output is u4. The time constant is n and is expressed by the following formula.
Figure JPOXMLDOC01-appb-M000005
Figure JPOXMLDOC01-appb-M000005
　制御定数Ｋ４ｐおよび制御周期ｋについては、第１のシート位置検出センサ４０と第２のシート位置検出センサ５０との距離および、シート２の送り速度、幅、材質などによって効果的な値を選択する必要がある。 For the control constant K4p and the control cycle k, effective values are selected depending on the distance between the first sheet position detection sensor 40 and the second sheet position detection sensor 50, the feeding speed, width, material, and the like of the sheet 2. There is a need.
　また、第３の駆動装置３０を動作させる代わりに、第１のシート位置検出センサ４０の目標値をｕ４だけ変化させることでも同様の効果が得られる。 Also, the same effect can be obtained by changing the target value of the first sheet position detection sensor 40 by u4 instead of operating the third driving device 30.
　このように動作させることにより、上流側シート２および下流側シート６の蛇行が修正される。第２の実施形態は第１の実施形態と比べて、第２の駆動装置２０が必要ないため、装置が簡易的にできるという効果がある。ただし、下流側シート６の蛇行修正に即応性がないため、傾向的蛇行に対しては効果的であるが、突発的蛇行に対しては効果が弱い。装置の特性をよく見極めて、どちらの制御を適用すればよいかを判断する必要がある。 By operating in this way, the meandering of the upstream sheet 2 and the downstream sheet 6 is corrected. Compared with the first embodiment, the second embodiment does not require the second drive device 20, and thus has an effect that the device can be simplified. However, since there is no immediate response to the meandering correction of the downstream sheet 6, it is effective for the tendency meandering, but the effect for the sudden meandering is weak. It is necessary to carefully check the characteristics of the device and determine which control should be applied.
　（第３の実施形態）
　本発明の第３の実施形態における光学シートのシート搬送装置３００について説明する。図１４は、該光学シートの搬送装置３００を示す概略図である。本実施形態において、第１の実施形態および第２の実施形態と共通する部分については同一の参照符を付し、説明を省略する。 (Third embodiment)
An optical sheet conveying apparatus 300 according to a third embodiment of the present invention will be described. FIG. 14 is a schematic view showing the optical sheet conveying apparatus 300. In the present embodiment, the same reference numerals are given to portions common to the first embodiment and the second embodiment, and the description thereof is omitted.
　シート搬送装置３００は、複数（本実施形態では５つ）のシート搬送装置１００またはシート搬送装置２００で構成されているものである。下流側シート６については、複数（本実施形態では５つ）のシートが重ね合わされたものである。上流側の構成について、個々の構成はシート搬送装置１００またはシート搬送装置２００と同様であり、個々の構成が複数存在し構成されている。図中、上流側の構成である、材料ロール１、上流側シート２、第１の駆動装置１０、第３の駆動装置３０、第１のシート位置検出センサ４０については、シートを搬送する構成を区別するために、参照符号にａ，ｂ，ｃ，ｄ，ｅの添え字を付している。下流側の構成については、シート搬送装置１００またはシート搬送装置２００と同様であり、全てのシートで共通化されている。 The sheet conveying apparatus 300 includes a plurality (five in the present embodiment) of sheet conveying apparatuses 100 or sheet conveying apparatuses 200. About the downstream sheet | seat 6, the several (5 in this embodiment) sheet | seat is piled up. Regarding the upstream side configuration, each configuration is the same as that of the sheet conveying apparatus 100 or the sheet conveying apparatus 200, and there are a plurality of individual configurations. In the drawing, the material roll 1, the upstream sheet 2, the first driving device 10, the third driving device 30, and the first sheet position detection sensor 40, which are upstream configurations, are configured to convey sheets. For distinction, suffixes a, b, c, d, and e are added to the reference symbols. The configuration on the downstream side is the same as that of the sheet conveying apparatus 100 or the sheet conveying apparatus 200, and is common to all sheets.
　本実施形態においても、シートごとに第１の実施形態または第２の実施形態と同様に蛇行修正制御が行われる。下流側が共通化されているため、１つの下流側の信号に対し各々のシートに対応する第１の駆動装置１０ａ～１０ｅおよび第３の駆動装置３０ａ～３０ｅが動作する。 Also in this embodiment, meandering correction control is performed for each sheet in the same manner as in the first embodiment or the second embodiment. Since the downstream side is shared, the first driving devices 10a to 10e and the third driving devices 30a to 30e corresponding to the respective sheets operate with respect to one downstream signal.
　本発明は、その精神または主要な特徴から逸脱することなく、他のいろいろな形態で実施できる。したがって、前述の実施形態はあらゆる点で単なる例示に過ぎず、本発明の範囲は特許請求の範囲に示すものであって、明細書本文には何ら拘束されない。さらに、特許請求の範囲に属する変形や変更は全て本発明の範囲内のものである。 The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects, and the scope of the present invention is shown in the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the scope of the claims are within the scope of the present invention.
　本発明のシート搬送装置は、光学シートはもちろん、あらゆる薄膜状シートのロール送り出しにおける蛇行修正に用いることが可能である。 The sheet conveying apparatus of the present invention can be used for correcting meandering in roll feeding of all thin film sheets as well as optical sheets.

Claims (12)

  1. 　シートを搬送するシート搬送装置において、
    　第１のシート位置検出センサと、
    　シート巻出し装置と、
    　前記シート巻出し装置を移動させる第１の駆動装置と、
    　前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、
    　第２のシート位置検出センサと、
    　シート蛇行修正ローラーと、
    　前記シート蛇行修正ローラーを移動させる第２の駆動装置と、
    　前記第２のシート位置検出センサの検出結果を受けて前記第２の駆動装置に信号を発信する第２の制御部と、
    　前記第１のシート位置検出センサを移動させる第３の駆動装置と、
    　前記第２の駆動装置の位置情報を受けて前記第３の駆動装置に信号を発信する第３の制御部とから構成されていることを特徴とするシート搬送装置。     In a sheet conveying apparatus that conveys a sheet,
    A first sheet position detection sensor;
    A sheet unwinding device;
    A first driving device for moving the sheet unwinding device;
    A first control unit for receiving a detection result of the first sheet position detection sensor and transmitting a signal to the first driving device;
    A second sheet position detection sensor;
    A sheet meandering correction roller,
    A second driving device for moving the sheet meandering correction roller;
    A second control unit for receiving a detection result of the second sheet position detection sensor and transmitting a signal to the second driving device;
    A third driving device for moving the first sheet position detection sensor;
    A sheet conveying apparatus comprising: a third control unit that receives position information of the second driving device and transmits a signal to the third driving device.
  2. 　前記第２の制御部は、第２のシート位置検出センサの値があらかじめ指定した値を超えた場合、前記第２の駆動装置を動作させることを特徴とする請求項１に記載のシート搬送装置。 2. The sheet conveying apparatus according to claim 1, wherein the second control unit operates the second driving device when a value of a second sheet position detection sensor exceeds a value specified in advance. .
  3. 　前記第２の駆動装置の位置が、あらかじめ指定した値を超えると、第２の駆動装置の前後のシートが動かないように固定し、シートの張力を下げ、シートが前記第２の駆動装置の移動によって動かないようにした後、前記第２の駆動装置の位置を初期状態に戻すことを特徴とする請求項１に記載のシート搬送装置。 When the position of the second driving device exceeds a pre-specified value, the front and rear sheets of the second driving device are fixed so as not to move, the tension of the sheet is lowered, and the sheet is fixed to the second driving device. The sheet conveying apparatus according to claim 1, wherein the position of the second driving device is returned to an initial state after being prevented from moving by movement.
  4. 　シートを搬送するシート搬送装置において、
    　第１のシート位置検出センサと、
    　シート巻出し装置と、
    　前記シート巻出し装置を移動させる第１の駆動装置と、
    　前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、
    　第２のシート位置検出センサと、
    　シート蛇行修正ローラーと、
    　前記シート蛇行修正ローラーを移動させる第２の駆動装置と、
    　前記第２のシート位置検出センサの検出結果を受けて前記第２の駆動装置に信号を発信する第２の制御部と、
    　前記第２の駆動装置の位置情報を受けて前記第１の制御部に信号を発信する第３の制御部とから構成されていることを特徴とするシート搬送装置。     In a sheet conveying apparatus that conveys a sheet,
    A first sheet position detection sensor;
    A sheet unwinding device;
    A first driving device for moving the sheet unwinding device;
    A first control unit for receiving a detection result of the first sheet position detection sensor and transmitting a signal to the first driving device;
    A second sheet position detection sensor;
    A sheet meandering correction roller,
    A second driving device for moving the sheet meandering correction roller;
    A second control unit for receiving a detection result of the second sheet position detection sensor and transmitting a signal to the second driving device;
    A sheet conveying apparatus comprising: a third control unit that receives position information of the second driving device and transmits a signal to the first control unit.
  5. 　前記第２の制御部は、第２のシート位置検出センサの値があらかじめ指定した値を超えた場合、前記第２の駆動装置を動作させることを特徴とする請求項４に記載のシート搬送装置。 5. The sheet conveying apparatus according to claim 4, wherein the second control unit operates the second driving device when a value of a second sheet position detection sensor exceeds a value specified in advance. 6. .
  6. 　前記第２の駆動装置の位置が、あらかじめ指定した値を超えると、第２の駆動装置の前後のシートが動かないように固定し、シートの張力を下げ、シートが前記第２の駆動装置の移動によって動かないようにした後、前記第２の駆動装置の位置を初期状態に戻すことを特徴とする請求項４に記載のシート搬送装置。 When the position of the second driving device exceeds a pre-specified value, the front and rear sheets of the second driving device are fixed so as not to move, the tension of the sheet is lowered, and the sheet is fixed to the second driving device. The sheet conveying device according to claim 4, wherein the position of the second driving device is returned to an initial state after the movement is prevented from moving.
  7. 　シートを搬送するシート搬送装置において、
    　第１のシート位置検出センサと、
    　シート巻出し装置と、
    　前記シート巻出し装置を移動させる第１の駆動装置と、
    　前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、
    　第２のシート位置検出センサと、
    　前記第１のシート位置検出センサを移動させる第３の駆動装置と、
    　前記第２のシート位置検出センサの検出結果を受けて前記第３の駆動装置に信号を発信する第４の制御部とから構成されていることを特徴とするシート搬送装置。     In a sheet conveying apparatus that conveys a sheet,
    A first sheet position detection sensor;
    A sheet unwinding device;
    A first driving device for moving the sheet unwinding device;
    A first control unit for receiving a detection result of the first sheet position detection sensor and transmitting a signal to the first driving device;
    A second sheet position detection sensor;
    A third driving device for moving the first sheet position detection sensor;
    A sheet conveying apparatus comprising: a fourth control unit which receives a detection result of the second sheet position detection sensor and transmits a signal to the third driving device.
  8. 　シートを搬送するシート搬送装置において、
    　第１のシート位置検出センサと、
    　シート巻出し装置と、
    　前記シート巻出し装置を移動させる第１の駆動装置と、
    　前記第１のシート位置検出センサの検出結果を受けて前記第１の駆動装置に信号を発信する第１の制御部と、
    　第２のシート位置検出センサと、
    　前記第２のシート位置検出センサの検出結果を受けて前記第１の制御部に信号を発信する第４の制御部とから構成されていることを特徴とするシート搬送装置。     In a sheet conveying apparatus that conveys a sheet,
    A first sheet position detection sensor;
    A sheet unwinding device;
    A first driving device for moving the sheet unwinding device;
    A first control unit for receiving a detection result of the first sheet position detection sensor and transmitting a signal to the first driving device;
    A second sheet position detection sensor;
    A sheet conveying apparatus comprising: a fourth control unit which receives a detection result of the second sheet position detection sensor and transmits a signal to the first control unit.
  9. 　第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、シート蛇行修正ローラーと、前記シート蛇行修正ローラーを移動させる第２の駆動装置と、前記第１のシート位置検出センサを移動させる第３の駆動装置とを備えたシート搬送装置のシート蛇行修正方法であって、
    　前記第１のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する第１の工程と、
    　前記第２のシート位置検出センサの検出結果に応じて前記第２の駆動装置を駆動する第２の工程と、
    　前記第２の駆動装置の位置情報に応じて前記第３の駆動装置を駆動する第３の工程とからなるシート蛇行修正方法。     A first sheet position detection sensor; a sheet unwinding device; a first driving device for moving the sheet unwinding device; a second sheet position detection sensor; a sheet meandering correction roller; and the sheet meandering correction roller. A sheet meandering correction method for a sheet conveying device, comprising: a second driving device that moves the second driving device; and a third driving device that moves the first sheet position detection sensor,
    A first step of driving the first driving device in accordance with a detection result of the first sheet position detection sensor;
    A second step of driving the second driving device in accordance with a detection result of the second sheet position detection sensor;
    A sheet meandering correction method comprising a third step of driving the third driving device in accordance with position information of the second driving device.
  10. 　第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、シート蛇行修正ローラーと、前記シート蛇行修正ローラーを移動させる第２の駆動装置と、前記第１のシート位置検出センサを移動させる第３の駆動装置とを備えたシート搬送装置のシート蛇行修正方法であって、
    　前記第１のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する第１の工程と、
    　前記第２のシート位置検出センサの検出結果に応じて前記第２の駆動装置を駆動する第２の工程と、
    　前記第２の駆動装置の位置情報に応じて前記第１の駆動装置をさらに駆動する第３の工程とからなるシート蛇行修正方法。     A first sheet position detection sensor; a sheet unwinding device; a first driving device for moving the sheet unwinding device; a second sheet position detection sensor; a sheet meandering correction roller; and the sheet meandering correction roller. A sheet meandering correction method for a sheet conveying device, comprising: a second driving device that moves the second driving device; and a third driving device that moves the first sheet position detection sensor,
    A first step of driving the first driving device in accordance with a detection result of the first sheet position detection sensor;
    A second step of driving the second driving device in accordance with a detection result of the second sheet position detection sensor;
    A sheet meandering correction method comprising a third step of further driving the first driving device in accordance with position information of the second driving device.
  11. 　第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、前記第１のシート位置検出センサを移動させる第２の駆動装置とを備えたシート搬送装置のシート蛇行修正方法であって、
    　前記第１のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する第１の工程と、
    　前記第２のシート位置検出センサの検出結果に応じて前記第２の駆動装置を駆動する第２の工程とからなるシート蛇行修正方法。     A first sheet position detecting sensor; a sheet unwinding device; a first driving device for moving the sheet unwinding device; a second sheet position detecting sensor; and the first sheet position detecting sensor. A sheet meandering correction method for a sheet conveying device including a second drive device,
    A first step of driving the first driving device in accordance with a detection result of the first sheet position detection sensor;
    A sheet meandering correction method comprising: a second step of driving the second driving device in accordance with a detection result of the second sheet position detection sensor.
  12. 　第１のシート位置検出センサと、シート巻出し装置と、前記シート巻出し装置を移動させる第１の駆動装置と、第２のシート位置検出センサと、前記第１のシート位置検出センサを移動させる第２の駆動装置とを備えたシート搬送装置のシート蛇行修正方法であって、
    　前記第２のシート位置検出センサの検出結果に応じて前記第１の駆動装置を駆動する工程からなるシート蛇行修正方法。     A first sheet position detecting sensor; a sheet unwinding device; a first driving device for moving the sheet unwinding device; a second sheet position detecting sensor; and the first sheet position detecting sensor. A sheet meandering correction method for a sheet conveying device including a second drive device,
    A sheet meandering correction method comprising a step of driving the first driving device in accordance with a detection result of the second sheet position detection sensor.
PCT/JP2010/057890 2009-05-13 2010-05-10 Sheet conveyance device and sheet meandering correction method WO2010131626A1 (en)

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Publication number Priority date Publication date Assignee Title
KR101829308B1 (en) * 2011-04-22 2018-02-20 동우 화인켐 주식회사 Controlling device for preventing snaking of patterns of patterned flims
JP2012236676A (en) * 2011-05-11 2012-12-06 Nippon Electric Glass Co Ltd Device of correcting winding deviation of film and method of correcting winding deviation
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JP6843464B2 (en) * 2016-11-18 2021-03-17 鈴茂器工株式会社 Maki sushi continuous manufacturing equipment
JP7012046B2 (en) * 2019-04-26 2022-01-27 大成ラミック株式会社 Filling and packaging equipment and methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4817698B1 (en) * 1969-08-01 1973-05-31
JPS52128862A (en) * 1976-04-22 1977-10-28 Nippon Steel Corp Method of controlling position of end of band material in band material processor
JPH0346953A (en) * 1989-07-14 1991-02-28 Photo Composing Mach Mfg Co Ltd Sensitized material transfer device with meandering correcting function
JPH0416452A (en) * 1990-05-07 1992-01-21 Kataoka Mach Co Ltd Selvage cut preventing device for winding device
JPH05270710A (en) * 1992-03-27 1993-10-19 Toppan Printing Co Ltd Meandering correction device for web
JPH06206653A (en) * 1993-01-08 1994-07-26 Hitachi Seiko Ltd Paper end position adjusting device in rotary press

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4817698B1 (en) * 1969-08-01 1973-05-31
JPS52128862A (en) * 1976-04-22 1977-10-28 Nippon Steel Corp Method of controlling position of end of band material in band material processor
JPH0346953A (en) * 1989-07-14 1991-02-28 Photo Composing Mach Mfg Co Ltd Sensitized material transfer device with meandering correcting function
JPH0416452A (en) * 1990-05-07 1992-01-21 Kataoka Mach Co Ltd Selvage cut preventing device for winding device
JPH05270710A (en) * 1992-03-27 1993-10-19 Toppan Printing Co Ltd Meandering correction device for web
JPH06206653A (en) * 1993-01-08 1994-07-26 Hitachi Seiko Ltd Paper end position adjusting device in rotary press

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