Responsive To Material Length Patents (Class 242/534.2)
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Patent number: 11292684Abstract: An unwinder for rolls of paper web material includes: a support frame; a spindle cylinder, rotationally associated with the frame, supporting a parent roll with a longitudinal axis; unwinder to unwind a paper web from the parent roll; actuator keeping the unwindier contacting the parent roll; a command and control unit; first motor rotating the spindle cylinder; two support and drive rollers; units to measure instantaneous radius of the parent roll, rotational speed of the spindle cylinder, quantity of web unrolled from the parent roll per unit time, and weight unloaded from the parent roll onto the support and drive rollers; second motor synchronously rotating the support and drive rollers; and third motor moving the spindle cylinder vertically. The control unit receives and processes values detected by the measurement unit, causing the motor to maintain the weight force unloaded onto the rollers from the roll as the diameter varies.Type: GrantFiled: July 10, 2018Date of Patent: April 5, 2022Assignee: TECNO PAPER SRLInventor: Paolo Baldaccini
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Patent number: 11078041Abstract: The invention relates to a monitoring method (100) for monitoring an unwinding process of an unwinding device (2), comprising the following steps: at least partially unwinding (101) a web material (11) from a reel (10), detecting (102) at least one irregularity (12) of the web material (11) and/or the unwinding process. Furthermore, the invention relates to an unwinding device (2) for performing an unwinding process as well as an unwinding system (5) for performing an unwinding process.Type: GrantFiled: April 18, 2018Date of Patent: August 3, 2021Assignee: Windmöller & Hölscher KGInventors: Uwe Köhn, Oliver Huil
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Patent number: 11007792Abstract: An object is to provide a thermal transfer printer having an inexpensive configuration and capable of making a tension given to an ink ribbon as constant as possible, even when a secular change and an environmental change occur in a DC motor used as a supply motor and a winding motor. A supply motor control unit controls a supply motor of an ink ribbon supply unit. A winding motor control unit controls a winding motor of an ink ribbon winding unit. A remaining amount detection unit detects a remaining amount of an ink ribbon. A variable calculation unit acquires parameters for an armature current, an applied voltage, and a rotational speed of each of the supply motor and the winding motor, and calculates variables to be used for controlling the supply motor and the winding motor on the basis of the acquired parameters.Type: GrantFiled: September 13, 2018Date of Patent: May 18, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yusuke Kanatake, Makoto Sakuwa, Kosuke Oda
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Patent number: 10981025Abstract: A fire hose cleaning device that includes a washing frame comprising a piping system having one or more spray apertures for discharging a liquid to clean a fire hose. The piping system comprising a base pipe section, a top pipe section disposed in parallel alignment with the base pipe section, and two or more side pipe sections disposed in parallel alignment coupled to the base section and the top section. The washing frame may include a hose adapter. The hose adapter may connect to an open end of a hose to receive a liquid to pass through the washing frame. The washing frame may include one or more hose reception devices coupled to the two or more side pipe sections. The one or more hose reception devices enables a fire hose to be positioned thereon and selectively pass through the washing frame while being sprayed with the liquid.Type: GrantFiled: January 3, 2019Date of Patent: April 20, 2021Inventor: Joshua Ostler
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Patent number: 10538411Abstract: In a cross section perpendicular to an axial direction of a discharge roller, a rotation center of the discharge roller is provided at a position out of a straight line that connects a rotation center of a discharge driven roller and a rotation center of a duplex driven roller. The discharge roller that receives forces from the discharge driven roller and the duplex driven roller is held by a discharge roller presser.Type: GrantFiled: November 13, 2014Date of Patent: January 21, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Daisuke Yamamoto
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Patent number: 10422076Abstract: A powered pneumatic system for capturing a rejected tissue sheet on a parent roll for recycling.The parent roll is supported on a powered parent roll back stand, which turns the parent roll to unwind it. The sheet is drawn into the inlet of a wide pneumatic hood. Suction pressure supplied by a material-handling fan draws the sheet through a duct, where the material-handling fanbreaks it up. The air with entrained, broken paper may be supplied either to a dry system, typically including a separator to separate the paper from the air, or to a wet system for pulping the paper. A trim receiver is one example of a dry system separator. A Venturi scrubber is one example of a wet system. In either case, the paper from the parent roll can be recycled without needing to cut the paper from the roll.Type: GrantFiled: May 14, 2019Date of Patent: September 24, 2019Assignee: Brunn Air Systems, Inc.Inventor: John Kelyman
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Patent number: 10345094Abstract: A method of measuring the thickness of a fiber texture wound on an impregnation mandrel for fabricating an annular structural part of a turbine engine out of composite material, the method including, prior to winding the fiber texture, acquiring a reference distance between an outside surface of the impregnation mandrel and a distance sensor positioned facing the outside surface of the impregnation mandrel, while winding the fiber texture, acquiring at least one real distance between the distance sensor and the outside surface of the fiber texture wound on the impregnation mandrel, and calculating the real thickness of the fiber texture wound on the impregnation mandrel by subtracting the real distance from the reference distance.Type: GrantFiled: April 22, 2014Date of Patent: July 9, 2019Assignee: SAFRAN AIRCRAFT ENGINESInventors: Sylvain Corradini, Richard Mathon, Jean-François Durand
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Publication number: 20150021426Abstract: A sod harvester comprising a start gate, a first switch that is configured to interact with a first sensor, a second switch that is configured to internet with a second sensor, an inclined conveyor, and a rollup conveyor positioned above the second end of the inclined conveyor. The first switch is positioned between the start gate and the second switch, and the second is positioned between the first switch and the rollup conveyor. When the second sensor is activated, the rollup conveyor begins rotating. When the first sensor is activated, an encoder begins measuring distance traveled rotationally by the rollup conveyor. The rollup conveyor stops rotating when the rollup conveyor has traveled a certain distance rotationally.Type: ApplicationFiled: July 19, 2013Publication date: January 22, 2015Applicant: Trebro Holding, Inc.Inventor: Daniel Sammut
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Patent number: 8864059Abstract: A printing device includes a first roller for rotatably retaining a roll body where a medium is rolled, a first motor for rotating the first roller, a second roller installed further to the downstream side of the roll body in the feeding direction of the medium to feed the medium in the feeding direction or in a reverse feeding direction which is opposite to the feeding direction corresponding to the rotating direction, a second motor for rotating the second roller, and a controller which causes the medium to become slack the first roller and the second roller by feeding the medium by a predetermined feeding amount in the reverse feeding direction by the second motor, and then rotates the roll body in a winding-up direction by the first motor so that the slackness decreases to calculate the diameter of the roll body based on the rotation amount of the first roller at that time and the predetermined feeding amount.Type: GrantFiled: July 14, 2011Date of Patent: October 21, 2014Assignee: Seiko Epson CorporationInventors: Kenji Hatada, Hitoshi Igarashi
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Patent number: 8532559Abstract: A print system includes: a first printer that performs printing on continuous-form paper; a second printer that performs printing on the continuous-form paper printed by the first printer; a measuring unit that measures a paper length between the first printer and the second printer; a calculator that calculates a post-conveyance amount as a distance to convey the continuous-form paper after the printing, for the first printer or the second printer, based on the paper length measured by the measuring unit; and a conveyance operation controller that controls post-conveyance operations in the first printer and the second printer based on the post-conveyance amount calculated by the calculator.Type: GrantFiled: August 16, 2010Date of Patent: September 10, 2013Assignee: Fuji Xerox Co., Ltd.Inventor: Daisuke Fujii
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Patent number: 8317123Abstract: A sheet rolling device includes a mandrel that selectively retains the sheet stock between a sidewall of the mandrel and a gripper blade of the mandrel. The sheet rolling device also includes a sensor that detects a presence and an absence of the sheet stock near the mandrel, a controller operably associated with the mandrel so as to cause a motor to rotate the mandrel to wind the sheet stock around the mandrel, and an expansion leaf operably associated with the controller and situated along at least a portion of an exterior of the sidewall of the mandrel. Extension of the expansion leaf away from the sidewall increases an effective perimeter of the mandrel about which the sheet stock may be wound and retraction of the expansion leaf toward the sidewall decreases the effective perimeter of the mandrel about which the sheet stock may be wound.Type: GrantFiled: July 23, 2010Date of Patent: November 27, 2012Assignee: Erdie End Caps, LLCInventor: Jason S. Erdie
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NEAR-END OF ROLL DETECTING APPARATUS FOR DETECTING NEAR-END OF ROLL OF RECORDING MEDIUM, AND PRINTER
Publication number: 20100310294Abstract: To improve precision in identifying the amount that remains of a recording medium, an apparatus includes a paper holder that supports an outer circumferential surface of a recording medium that is biased downward in a vertical direction by the weight of the recording medium, such that a position of a center of the recording medium moves on a straight-line trace, associated with consumption of the recording medium; and a light-reflecting sensor that is provided at a predetermined position at a side face of the paper holder and senses displacement per unit time at a position facing the predetermined position of the recording medium that is rotated by being pulled out of the paper holder, associated with the consumption of the recording medium, where based on the displacement sensed by the light-reflecting sensor, a radius of the recording medium at the time the light reflecting sensor senses the displacement is calculated.Type: ApplicationFiled: April 14, 2010Publication date: December 9, 2010Applicants: CITIZEN HOLDINGS CO., LTD., CITIZEN SYSTEMS JAPAN CO., LTD.Inventors: Hiroyuki TSUGARU, Gen MATSUSHIMA, Katsutoshi MUKAIJIMA, Tetsuya YAMAMOTO -
Patent number: 7644884Abstract: A machine used to rewind toilet paper from partial toilet paper rolls and make a single large toilet paper roll. The machine includes a pivotally mounted unwinding spool and a take-up spool mounted both horizontally over a platform. The take-up spool includes at least one plunger that extends outward from its outer surface to selectively engage the inside paper core commonly used on a roll of toilet paper roll. The take-up spool is coupled to an electric motor that rotates the take-up spool. A spring is disposed between the unwinding spool and the take-up spool to reduce tension of the toilet paper as it is rewound. During use, two partially used toilet paper rolls are placed on the take-up spool and the unwinding spool. The loose ends of paper on the partial rolls are loosely over lapped and wrapped on the take-up spool. The electric motor is then activated to wind the toilet paper from the unwinding spool onto the take-up spool.Type: GrantFiled: August 17, 2007Date of Patent: January 12, 2010Inventors: Milton Foss, Ed Stuck, Neil Vanderven
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Publication number: 20090101747Abstract: In a method for calculating the diameter of a continuous-material reel on a roller, with which the roller is mounted on a swivel arm that is swivelable about a swiveling axis; the roller rotates at a changeable winding speed, and the continuous material is unwound from the roller and directed to a continuous-material machine, or it is removed from a continuous-material machine and wound onto the roller, the winding speed is set as a function of the web-conveyance speed, and the diameter of the continuous-material reel is calculated in a reel-control system; the winding speed is changed when the swivel arm on which the roller is mounted is swiveled about its swiveling axis during the winding motion; a correction value for correcting the change in winding speed is incorporated in the calculation of the diameter of the continuous-material reel, the correction value being determined within the reel-control system, and a related reel-control system is provided.Type: ApplicationFiled: October 16, 2008Publication date: April 23, 2009Inventors: Hans-Juergen Doeres, Stephan Schultze
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Publication number: 20080142631Abstract: Disclosed is a system for indicating paper supply in receipt printers, the system including a paper roll including a core and length of paper that forms a paper portion, the core including a core diameter and the paper portion including a decreasing paper diameter, wherein the core contrasts in color to the paper portion to create a contrast, a scanner configured to sense data pertaining to areas occupied by the core and the paper portion via the contrast, wherein the computing resource is configured to convert the data into measurements of the core diameter and paper diameter, the computing resource being programmable to create alerts when remaining lengths of paper are left on the paper roll, the remaining lengths corresponding to low paper conditions of the paper roll, and being calculated by measurements pertaining to the core diameter, decreasing paper diameter, and a thickness of the paper.Type: ApplicationFiled: December 15, 2006Publication date: June 19, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Kevin H. Vorhees
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Patent number: 7086626Abstract: Tape cutting-out equipment to wind and cut out tape supplied from a pancake in plural kinds of winding lengths on a reel, the equipment is equipped with a tape supplying device supplying tape from the pancake P, a tape winding device winding the supplied tape from the tape supplying device, a memory unit memorizing position data of defect portions of the tape in the pancake, a winding length deciding unit deciding a winding length of the tape based on the position data read out from the memory unit, a cutting device cutting the tape, and a cutting control unit controlling making the cutting device cut the tape at a timing when the tape winding device winds tape of the winding length decided by the winding length deciding unit.Type: GrantFiled: October 20, 2003Date of Patent: August 8, 2006Assignee: Fuji Photo Film Co., Ltd.Inventor: Hirokazu Komai
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Patent number: 7070141Abstract: The stopping of a winder is controlled such that winding is stopped when a desired length of a web has been wound on a roll being formed/unwound from a roll being formed or when the size of the diameter of the roll is desired. An estimated stopping length is calculated based on speed, acceleration and a desired end speed.Type: GrantFiled: April 19, 2002Date of Patent: July 4, 2006Assignee: Metso Paper, Inc.Inventor: Jari Paanasalo
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Patent number: 7021584Abstract: A sod roller for automatically controlling the angular position of the end or flap of a roll of sod about the roll. A device senses the end, or trailing edge, of a strip of sod as a roll is formed on a roll-up conveyor. The sod roller holds the roll in the roll-up conveyor as it continues to roll and ejects the roll from the roll-up conveyor in a manner responsive to the position of the trailing edge of the strip of sod.Type: GrantFiled: July 14, 2003Date of Patent: April 4, 2006Assignee: Steiner Turf Equipment, Inc.Inventors: Emanuel A. Hendriks, Mathias M. Hendriks, Johannes G. Hendriks, Wilhelmus J. Hendriks, Thomas E. Noyes, II
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Patent number: 6814329Abstract: A production managing method for production of motion picture photo film is provided. At first, film web is slitted to produce continuous photo film having a predetermined width. Production managing information is written to an RFID (radio frequency identification) tag, and includes a roll number and slitting number, which are related to the film web and the continuous photo film. The continuous photo film is cut to produce motion picture photo film. The production managing information is stored in association with the motion picture photo film. The motion picture photo film is checked. If the motion picture photo film has a defect, the production managing information may be referred to for detecting a portion of the film web or the continuous photo film from which the defect derives. Other motion picture photo films with a defect will be traced.Type: GrantFiled: August 1, 2002Date of Patent: November 9, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Ryoji Ebisawa, Hiroshi Seikai
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Patent number: 6807723Abstract: The present invention relates to an apparatus for producing a honeycomb body, which comprises a roll part for supplying a thin metal flat sheet via several rolls; a part for measuring the length of feed of the flat sheet which is fed through said roll part for supplying a flat sheet; a roll part for supplying a corrugated sheet to overlap the same onto said flat sheet via several rolls; a winding roll of a honeycomb body which is made by folding the overlapping flat and corrugated sheets in feed into a roll; a part for measuring the rotation angle of said winding roll; and a control part, which is connected respectively to said part for measuring the length and said part for measuring the rotation angle, wherein said control part controls the amount of winding of a honeycomb body by receiving and computing the measurement values therefrom.Type: GrantFiled: June 13, 2001Date of Patent: October 26, 2004Assignee: Korean Institute of Machinery and MaterialsInventors: Won-Wook Park, Byoung-Gi Moon, Ha-Sik Kim
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Publication number: 20040135024Abstract: The invention relates to a method for controlling a winder, in which method the stopping of the winder is controlled such that winding is stopped when a desired length of a web has been wound on a roll being formed/unwound from a roll being formed or when the size of the diameter of the roll is desired. In the method, an estimated stopping length is calculated based on speed, acceleration and a desired end speed.Type: ApplicationFiled: October 24, 2003Publication date: July 15, 2004Inventor: Jari Paanasalo
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Patent number: 6736347Abstract: A magnetic tape cutting system having a storage unit for storing positional information of defect portions of a whole roll of magnetic tape and a winding apparatus for playing out magnetic tape from the roll and winding the magnetic tape as a product. A defect removal apparatus plays out magnetic tape from the whole roll for purposes of disposal. A control unit selects, based on the positional information of the defect portions in a selected roll of magnetic tape, the winding apparatus or the defect removal apparatus. The apparatus that is not currently selected is available to process another roll of magnetic tape while the selected roll of magnetic tape is being processed in the selected apparatus.Type: GrantFiled: March 22, 2002Date of Patent: May 18, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Hirokazu Komai
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Patent number: 6648264Abstract: It is adapted such that, when coiling a thin metal strip at high speed, no shape defect owing to a center buckle occurs in the metal strip, thereby intending an improvement in yield. In a method of coiling a metal strip, adapted such that, before the coiling is finished, wrapper rolls 6 are pushed against an outer coiling face of a coil 5 to brake a rotation of the coil 5 and, by this, the rotation of the coil 5 is stopped in a short time at a coiling finish time, a pushing force of the wrapper roll 6 is made 10-20 kN/m.Type: GrantFiled: May 10, 2001Date of Patent: November 18, 2003Assignee: Kawasaki Steel CorporationInventors: Taichi Kukizaki, Toshio Imazeki, Kiyoshi Ueda
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Patent number: 6634591Abstract: A magnetic tape cutout apparatus 10 having storing member for storing a position of a defect portion of an original roll of a magnetic tape, a winding apparatus 14 for reeling off the magnetic tape from the original roll and winding the magnetic tape as a product and discharging member 17 for removing the product including the defect portion based on information of a position of a defect of the storing member.Type: GrantFiled: April 1, 2002Date of Patent: October 21, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Hirokazu Komai
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Patent number: 6607159Abstract: A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel.Type: GrantFiled: September 23, 2002Date of Patent: August 19, 2003Assignee: Kabushikikaisha TaiheiseisakushoInventors: Youichi Ohshio, Yasuyuki Ohdaira, Akihiro Mizuno, Shinichi Nakagawa, Yasuyuki Kohara, Mitsumasa Narita, Hideki Kawamori, Reiji Yamada, Masanori Murakami, Kazumi Sugiyama, Tomoharu Okada
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Patent number: 6592065Abstract: A winding type flexible printed circuit board tape transferring system includes tape let-off wheel unit, a tape take-up wheel unit, two idle wheel units adapted to guide movement of the flexible printed circuit board tape from the tape let-off wheel unit to the tape take-up wheel unit, a tension control wheel unit adapted to control the tension of the flexible printed circuit board tape being transferred from the tape let-off wheel unit to the tape take-up wheel unit, and at least one work wheel unit adapted to rotate a respective rotary encoder upon movement of the flexible printed circuit board tape, enabling the rotary encoder to output a signal to a control unit indicative of the position of the flexible printed circuit board tape.Type: GrantFiled: October 11, 2001Date of Patent: July 15, 2003Assignee: Utechzone Co., Ltd.Inventors: Chia-Chun Tsou, Ying-Ming Hung, Shi-Hau Yeh, Shaw-Ren Leu
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Patent number: 6565029Abstract: A method for detecting slippage in a tape path, and re-calibrating a sensing assembly in a tape storage device to account for the slippage. The method includes sensing a position of one of a supply reel and a take-up reel. In response to sensing the position of the supply reel or take-up reel, sensing a position of a guide roller. The position of the guide roller corresponds to the position of the guide roller when the position of the supply reel or the take-up reel is sensed. In response to sensing the position of the guide roller, the tape media is wound through the tape path between the supply reel and the take-up reel. In response to winding the tape media through the tape path, a second position of the one of the supply reel and the take-up reel is sensed. In response to sensing the second position of the one of the supply reel and the take-up reel, a second position of the guide roller is sensed.Type: GrantFiled: June 20, 2001Date of Patent: May 20, 2003Assignee: Quantum Corp.Inventors: James Zweighaft, David B. Daniel
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Patent number: 6557795Abstract: A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel.Type: GrantFiled: May 15, 2001Date of Patent: May 6, 2003Assignee: Kabushikikaisha TaiheiseisakushoInventors: Youichi Ohshio, Yasuyuki Ohdaira, Akihiro Mizuno, Shinichi Nakagawa, Yasuyuki Kohara, Mitsumasa Narita, Hideki Kawamori, Reiji Yamada, Masanori Murakami, Kazumi Sugiyama, Tomoharu Okada
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Patent number: 6550713Abstract: A device for use in a reel-up of a paper web, the reel-up including a reeling cylinder mounted on bearings to guide a web on to a reeling axle. The device includes an actuator and a control member for setting and controlling the distance between the reeling cylinder and the reeling axle. The device further includes an actuator and a control member for effectuating and maintaining a force effect between the reeling cylinder and the reeling axle.Type: GrantFiled: March 22, 2001Date of Patent: April 22, 2003Assignee: Metso Paper, Inc.Inventors: Pekka Ruha, Jarkko Räty
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Publication number: 20030038207Abstract: A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel.Type: ApplicationFiled: September 23, 2002Publication date: February 27, 2003Applicant: KABUSHIKIKAISHA TAIHEISEISAKUSHOInventors: Youichi Ohshio, Yasuyuki Ohdaira, Akihiro Mizuno, Shinichi Nakagawa, Yasuyuki Kohara, Mitsumasa Narita, Hideki Kawamori, Reiji Yamada, Masanori Murakami, Kazumi Sugiyama, Tomoharu Okada
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Patent number: 6427939Abstract: An anti-crimping roll is fixed to a vehicle moving in a direction perpendicular to the moving trace of a piston by way of a cylinder extending/shrinking the piston in a linear direction, and they are disposed at a position capable of moving along a longitudinal direction of a steel sheet within a plane in which the anti-crimping roll is perpendicular to the axis of rotation of a tension reel. A control device calculates an aimed winding angle of the steel sheet to the anti-crimping roll capable of avoiding occurrence of crimps based on a thickness and a width of the steel sheet, and drives the cylinder and the vehicle such that the calculated angle is aligned with an actual wind-up angle calculated from the stroke amount of the piston, moving amount of the vehicle to adjust the position of the anti-crimping roll.Type: GrantFiled: November 24, 1999Date of Patent: August 6, 2002Assignee: Kawasaki Steel CorporationInventors: Takeshi Miyata, Tsutomu Matsubara, Yasuhiro Yamaguchi, Akinobu Kamimaru
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Web winding apparatus, method of and apparatus for processing web edge, and web processing apparatus
Publication number: 20020079400Abstract: A web processing apparatus has a cutting mechanism for cutting elongate webs of different widths from a raw web, a core rotating mechanism for selectively holding cores having different diameters and different axial lengths and rotating a selected one of the cores in opposite directions, a winding mechanism for supporting one of the elongate webs on an outer circumferential surface of the core to wind the elongate web in different winding directions when the core is rotated, and a cutting mechanism for cutting an end of the elongate web to produce a roll after the elongate web is wound around the core.Type: ApplicationFiled: November 8, 2001Publication date: June 27, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Takayuki Fujiwara, Katsuhiro Sugiyama, Tomohiro Nakata -
Patent number: 6260787Abstract: A rewinder for rewinding a web into one or more rolls on separate cores, includes at least one rewinding mandrel having a distal end. The rewinder also has a supply device for supplying the web to the rewinding mandrel, and a drive device. The drive device can (a) rotate the rewinding mandrel in order to wind at least a portion of the web onto the rewinding mandrel, and (b) axially retract the mandrel to unload the portion of the web wound on the mandrel. Also included is a holder for holding the one or more rolls. The rewinder also has a lifter for (a) raising the holder to support the portion of the web wound on the mandrel, and (b) lowering the holder. This rewinding mandrel is rotated in order to wind at least a portion of the web onto the rewinding mandrel. The holder is then raised to support the portion of the web wound on the mandrel. Next, the mandrel is axially retracted to unload the portion of the web wound on the mandrel, before lowering the holder.Type: GrantFiled: July 26, 1999Date of Patent: July 17, 2001Assignee: John Dusenbery Co., Inc.Inventors: John Michel, John Wilkes, Michael Yermal
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Patent number: RE45846Abstract: To prevent disalignment of the edges of a folded sheet by smoothly feeding the sheet to a packaging unit while keeping tension fluctuations to a minimum when the sheet is unwound from a paper roll set in a paper feed unit even though the paper roll diameter decreases gradually as the sheet is unwound. A sheet length measuring sensor or rotary encoder is provided in the paper feed path through which the packaging sheet is fed toward the packaging unit. An angle sensor is provided which includes Hall element sensors provided on a support shaft and magnets provided on a core pipe of the paper roll. Any change in the signals from one of these sensors relative to the signal from the other sensor is used to calculate the paper roll winding length, and the sheet tension is adjusted to an optimum, constant level by controlling the sheet braking force stepwise according to the roll diameter measured by the sensors.Type: GrantFiled: November 6, 2012Date of Patent: January 19, 2016Assignee: Kabushiki Kaisha Yuyama SeisakushoInventors: Shoji Yuyama, Hiroshi Nose, Itsuo Yasunaga, Naomichi Etou, Hirokazu Amano
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Patent number: RE45949Abstract: To prevent disalignment of the edges of a folded sheet by smoothly feeding the sheet to a packaging unit while keeping tension fluctuations to a minimum when the sheet is unwound from a paper roll set in a paper feed unit even though the paper roll diameter decreases gradually as the sheet is unwound. A sheet length measuring sensor or rotary encoder is provided in the paper feed path through which the packaging sheet is fed toward the packaging unit. An angle sensor is provided which includes Hall element sensors provided on a support shaft and magnets provided on a core pipe of the paper roll. Any change in the signals from one of these sensors relative to the signal from the other sensor is used to calculate the paper roll winding length, and the sheet tension is adjusted to an optimum, constant level by controlling the sheet braking force stepwise according to the roll diameter measured by the sensors.Type: GrantFiled: September 11, 2003Date of Patent: March 29, 2016Assignee: YUYAMA MFG. CO., LTD.Inventors: Shoji Yuyama, Hiroshi Nose, Itsuo Yasunaga, Naomichi Etou, Hirokazu Amano