Abstract: First and second flanges protrude from a shaft portion in a direction crossing an axial direction. The first and second flanges define a position of a roll fitted to the shaft portion in the axial direction. First and second facing surfaces face the roll. First and second contact portions protrude from the first and second facing surfaces in the axial direction. The first and second contact portions are configured to contact a paper tube. A screw member is rotatable relative to the shaft portion, the first flange, and the second flange, thereby changing a relative position of the first flange and the second flange between a hold position at which the first and second contact portions press and hold the paper tube in the axial direction and a separation position at which at least the first contact portion or the second contact portion is separated from the paper tube.

Abstract: The present invention relates to a device (20) for winding a longitudinally cut material web having multiple longitudinal strips (12) on a plurality of winding tubes (16) to form in each case a wound roll. The device comprises an axle (24) and, mounted on the axle, a plurality of ring-shaped winding drives (22) that are individually controllable in their operating position. Each winding drive (22) forms an external-rotor electric motor and comprises a static interior tube (40) and a rotatable external tube (50). The external tube (50) that is rotatable on the rolling bearings (48) bears, on its interior, a device for providing an excitation magnetic field (52) that forms the external rotor of the electric motor.

Abstract: A roll-sheet feeding device having a roll sheet wound in a roll to feed a portion of the roll sheet to an image forming unit, includes a progressive mechanism to transmit a drive force from a drive source to transfer the portion of the roll sheet from the roll in a progressive direction, a roll-sheet drive mechanism to receive the drive force transmitted via the portion of the roll sheet transferred in the progressive direction, a rewinding mechanism to transfer the portion of the roll sheet in a direction opposite to the progressive direction via the roll-sheet drive mechanism to rewind the roll sheet, and a regenerating mechanism to obtain the drive force from the roll-sheet drive mechanism and transmit the obtained drive force to the progressive mechanism to regenerate the transmitted drive force as another drive force in addition to the drive force from the drive source.

Abstract: A take-up roll forming apparatus for flexible strip material comprises a motor-driven shaft journaled for rotation on a frame where the shaft extends through a circular plate that is affixed to the shaft. A plurality of magnets is affixed to the plate in a predetermined pattern. A reel having a tubular core is adapted to slip over the motor-driven shaft and the reel also includes a circular end plate having magnets affixed thereto such that when the motor-driven shaft rotates, it tends to carry the reel with it due to the magnetic forces attracting the magnets on the motor-driven plate to the magnets on the end plate of the reel.

Abstract: A torque limiter includes a first rotatable body rotatable around a rotation shaft as a center of rotation; and a second rotatable body rotatable around the rotation shaft as a center of rotation. The first rotatable body includes one of a magnet and a hysteresis plate. The second rotatable body includes the other of the magnet and the hysteresis plate. The magnet and the hysteresis plate face each other. The first rotatable body and the second rotatable body are in contact with each other. No wall is provided between the rotation shaft and a contact area at which the first rotatable body and the second rotatable body are in contact with each other.

Abstract: A geared core winder with locking mechanism for use with core rolls for fabric, material, rugs, paper or other such products comprised of a shaft containing a geared section, a first and second donut-shaped pieces placed on the shaft on opposite sides of the gears, a plurality of geared rods running between the donut-shaped pieces, wherein there is secured to each geared rod a plate which extends from the surface of the geared rods, wherein the geared rods interactingly engage the geared section of the shaft and a locking mechanism to prevent axial rotation of the geared core winder when engaged with core rolls.

Abstract: A roll shaft comprises: a latching portion which is mounted outside of one end of a roll shaft body and latched to the bearing portion of the latching portion; a one-way connection portion which is mounted inside the one end of the roll shaft body and rotated in only a direction opposite to the direction of feeding in the recording medium with respect to the latching portion; and a torque transmission limiting portion which is mounted inside the one end of the roll shaft body, used to release the transmission of torque when the value of the torque applied to the roll shaft body is equal to or greater than a predetermined value at the time of feeding in the recording medium and used to allow the torque to be transmitted when the value of the torque is less than the predetermined value.

Abstract: In a winding apparatus, such as a slitter rewinder, designed to shorten a distance between an unwinding shaft and a winding shaft thereby downsizing the apparatus and attaining a significant cost reduction. To that end, in unwinding a web from the unwinding shaft, either to wind it onto the winding shaft or to slit it in the elongate direction into plural narrow-width webs and to separate them alternately vertically or longitudinally, followed by winding onto respective winding shafts, the unwinding shaft is driven at a preset web speed, the winding shaft is driven at a preset web tension, guide rollers for guiding the web are disposed between the unwinding and winding shafts thereby to leave the guide rollers in free rotation by contact with the web without their positive driving.

Abstract: A method and apparatus for winding strip material onto a drum is disclosed. Friction between the surface of the drum and the strip material wound there around, as well as friction between adjacent reels of strip material, may be selectively controlled by controlling the provision of a fluid bed between the strip material and the surface of the drum. Control over this friction allows the individual strips to slip to different degrees relative to the drum on which they are wound. The different amounts of slip permit the strips to be wound on the drum with uniform tension and at a uniform take up speed.

Abstract: A winding device has a drive shaft having a flange, and a holder rotatably mounted on the drive shaft in covering relation to the flange, for winding the web therearound. The holder has a first torque adjustment plate rotatably mounted on the drive shaft and having a surface disposed in facing relation to a surface of the flange, the first torque adjustment plate supporting a plurality of magnets on the surface thereof, and a second torque adjustment plate rotatably mounted on the drive shaft and having a surface disposed in facing relation to an opposite surface of the flange, the second torque adjustment plate supporting a plurality of magnets on the surface thereof. The winding device is capable of winding relatively wide webs having a large thickness ranging from 100 to 150 &mgr;m, e.g., photographic photosensitive webs (films), with a low tension fluctuation ratio of ±5% or less, while producing large tension easily and stably. The winding device is constructed for easy maintenance.

Abstract: A method and apparatus for winding strip material onto a drum is disclosed. Friction between the surface of the drum and the strip material wound there around, as well as friction between adjacent reels of strip material, may be selectively controlled by controlling the provision of a fluid bed between the strip material and the surface of the drum. Control over this friction allows the individual strips to slip to different degrees relative to the drum on which they are wound. The different amounts of slip permit the strips to be wound on the drum with uniform tension and at a uniform take up speed.

Abstract: A roll sheet conveying device includes a spool arranged to be rotatable while holding a roll-shaped sheet, a sheet conveying roller for driving and conveying the sheet, and a spool brake mechanism for generating a rotation load to act on the spool, wherein, when the sheet is sent out from the spool by driving the sheet conveying roller, the rotation load of the spool brake mechanism is caused to act on the spool, and when the sheet is rewound onto the spool by driving the spool, the rotation load of the spool brake mechanism is prevented from acting on the spool.

Abstract: A winding unit is provided in which one-way clutches for driving and braking are mounted in the inner surface of the reel and a web such as a cover tape 39 is wound by intermittently rotating the reel. Tension acting on the web can be released during replacement of the reel. A spring type torque limiter 18 is disposed between the reel boss 25 and outer rings 12, 12′ of the one-way clutches 9, 11 for driving and braking. The torque limiter 18 is arranged such that, during rotation in the winding direction, a coil spring 27 locks to transmit torque, and when the reel is forcibly turned in the unwinding direction, slip occurs, thus releasing the tension in the web.

Abstract: A winding mechanism for winding a narrower web has a drive shaft with a torque transmitting member fixedly mounted thereon, and a holder rotatably mounted on the drive shaft with a spring disposed around an outer circumferential surface of the holder with cushioning members interposed therebetween. Stoppers are disposed respectively in three chambers defined in the holder. A groove is defined in an inner circumferential surface of a winding core around which the narrower web is wound, and the cushioning members are fitted in the groove. A pressing force of the spring is applied through the stoppers to the winding core which is mounted on the holder.

Abstract: A winding device has a drive shaft having a flange, and a holder rotatably mounted on the drive shaft in covering relation to the flange, for winding the web therearound. The holder has a first torque adjustment plate rotatably mounted on the drive shaft and having a surface disposed in facing relation to a surface of the flange, the first torque adjustment plate supporting a plurality of magnets on the surface thereof, and a second torque adjustment plate rotatably mounted on the drive shaft and having a surface disposed in facing relation to an opposite surface of the flange, the second torque adjustment plate supporting a plurality of magnets on the surface thereof. The winding device is capable of winding relatively wide webs having a large thickness ranging from 100 to 150 &mgr;m. e.g., photographic photosensitive webs (films), with a low tension fluctuation ratio of ±5% or less, while producing large tension easily and stably. The winding device is constructed for easy maintenance.

Abstract: A winding device has a drive shaft having a flange, and a holder rotatably mounted on the drive shaft in covering relation to the flange, for winding the web therearound. The holder has a first torque adjustment plate rotatably mounted on the drive shaft and having a surface disposed in facing relation to a surface of the flange, the first torque adjustment plate supporting a plurality of magnets on the surface thereof, and a second torque adjustment plate rotatably mounted on the drive shaft and having a surface disposed in facing relation to an opposite surface of the flange, the second torque adjustment plate supporting a plurality of magnets on the surface thereof. The winding device is capable of winding relatively wide webs having a large thickness ranging from 100 to 150 &mgr;m, e.g., photographic photosensitive webs (films), with a low tension fluctuation ratio of ±5% or less, while producing large tension easily and stably. The winding device is constructed for easy maintenance.

Abstract: A high bulk tissue web is made by depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a web, drying the web, winding the dried web to form a plurality of large diameter parent rolls wound on a core, and transporting the parent rolls to an unwind stand having torque transmitting clamping means for engaging opposite end surfaces of the parent rolls. A backing plate is connected to and rotatable with an unwind shaft connected to an electric drive. An inflatable bladder is mounted on the backing plate. The clamping means engage a first parent roll by inflating the bladder such that the opposite end surfaces of the roll are sandwiched between the side clamping mechanisms for partially unwinding the first parent roll using a variable speed drive operably associated with the clamping means.