Abstract: A winding machine includes an upper winding roller and a separation mechanism arranged at a location close to and below the upper winding roller. The separation mechanism includes a pivot shaft having an outer circumferential surface and at least one pinch arm having a connecting end coupled to the outer circumferential surface of the pivot shaft and a web engagement end extending outward from the outer circumferential surface of the pivot shaft. When the pinch arm is driven by a driving mechanism to rotate the web engagement end of the pinch arm to an engagement position where the web engagement end opposes the upper winding roller, the web engagement end of the pinch arm sucks and holds or guides a web material passing therethrough, whereby the web material is subjected to a pulling force induced by a roll of paper formed in a winding nip to tear and thus separate.

Abstract: A winding machine includes an upper winding roller and a separation mechanism arranged at a location close to and below the upper winding roller. The separation mechanism includes a pivot shaft having an outer circumferential surface and at least one pinch arm having a connecting end coupled to the outer circumferential surface of the pivot shaft and a web engagement end extending outward from the outer circumferential surface of the pivot shaft. When the pinch arm is driven by a driving mechanism to rotate the web engagement end of the pinch arm to an engagement position where the web engagement end opposes the upper winding roller, the web engagement end of the pinch arm sucks and holds or guides a web material passing therethrough, whereby the web material is subjected to a pulling force induced by a roll of paper formed in a winding nip to tear and thus separate.

Abstract: A method and an apparatus for exchange of cores in a machine for winding a continuous layer of paper (1) drawn by a drawing assembly (2) and wound around a succession of cores (3) by a winding assembly (4), comprising a step of interruption of the continuity of the layer (1), via a difference of speed of the layer.

Abstract: A winder for winding continuous webs or interleaved web segments having a machine direction and a cross-machine direction coplanar and orthogonal thereto into rolls is disclosed. The winder comprises a first surface contact roll having a longitudinal axis parallel to the cross-machine direction associated thereto. The web material contacts at least a portion of the first surface contact roll. The winder also has a winding spindle arranged to be rotatably driven about an axis generally parallel to the longitudinal axis of the first surface contact roll. The winding spindle is capable of receiving the web material when the winding spindle is proximate the web material contacting the first surface contact roll. Each of the winding spindle and first surface contact roll is capable of cooperative engagement when the web material is disposed therebetween.

Abstract: A rewinder (10) for winding paper (11?) around a core (11) for making a log (11?) comprising, in an upstream position, means for transporting and introducing the core (11) into a channel (12) defined at the top by an upper winding roller (14), supplied from above with the paper (11?) directed towards the channel (12), and at the bottom by a cradle member (13) associated downstream with a lower winding roller (15), the rewinder (10) comprising a third oscillating roller (16) arranged above the lower winding roller (15).

Abstract: Disclosed is a pre-wound sheet cut-off mechanism of a thin material sheet winding device, including a first winding roller, a plurality of curved guide plates arranged at a predetermined distance below the first winding roller and distributed and spaced from each other by a predetermined distance along an axial direction of a shaft of the first winding roller, a plurality of pre-winding plates each coupled between adjacent curved guide plates, a second winding roller, and a rider roller. In a winding operation, a core is conveyed into a curved-guide-plate channel defined between the first winding roller and the curved guide plates to adhere to and pre-wind a thin material sheet that is conveyed to the first winding roller, and is thereafter transported to a winding nip to form a roll with the thin material sheet.

Abstract: A rewinder machine for the production of rolls of web material is described, comprising: a winder unit (3, 5, 7); a path for delivering the web material (N) to said winder unit; a system for continuously feeding said web material into said winder unit; a distributor (31) of a sheet material (F) for wrapping the rolls formed by said winder unit, installed and operated so as to deliver a length of sheet material to said winder unit on completion of the winding of each roll without stopping the forward feed of the web material.

Abstract: A rewinding machine for producing logs of web material is described which includes a winding unit; a feed path of the web material towards the winding unit; a severing device to sever the web material upon completion of winding each log; and a glue dispenser to apply a glue to the web material. The machine also includes a diverter member disposed and controlled to temporarily divert the web material towards the glue dispenser.

Abstract: In a rewinding machine for winding web material onto a core to form rolls which has an unusual capability for accurate regulation of the winding, the web material is supplied to a winding drum and is transferred to the core to form the roll. The core is supported, rotated in controlled manner, and transported along a path in which the roll of web material wound on the core is enlarged whilst bearing continuously on the winding drum.

Abstract: A method for rewinding a web material is disclosed. The method provides for the steps of (1) Disposing the web material on a first surface contact roll, (2) Providing at least one winding spindle proximate the material disposed upon the first surface contact roll, (3) Adjusting the first surface contact roll relative to the at least one winding spindle, and, (4) Transferring the web material to the at least one winding spindle from the first surface contact roll.

Abstract: A web material winding machine includes a core tube storage tank, a guiding unit, a transmission means, a web material feeding assembly, a gripping assembly and a second gluing mechanism. A glued core tube is conveyed from the guiding unit to the transmission means and the web material is fed to the transmission means. The transmission means pushes the core tube to move to the gripping assembly and the web material is stuck to the core tube. The web material winds around the working core tube and when the winding is nearly completed, a new core tube is conveyed to the transporting passage and interferes with the feeding speed of the web material, causing the web material to tear along a line of perforations. A tail glue is applied to the web material of the web-wound roll by the second gluing mechanism and a web-wound roll is produced.

Abstract: A tissue paper winding and cutting machine includes a first winding roller, at least one core support plate arranged near the first winding roller to form a channel between them, and a pre-winding roller arranged near and below the first winding roller with a circumferential surface facing toward the first winding roller and protruding into the channel to form a narrowed passage in the channel. The pre-winding roller rotates about a shaft thereof in a direction opposite to a predetermined moving direction of a tissue paper to be wound around cores, and at a rotation speed slower than that of the first winding roller. With the rotation speed difference between the pre-winding roller and the first winding roller, a core moved into the channel is temporarily held at the narrowed passage, so that the tissue paper fed into the channel is wound around the core before being pulled broken.

Abstract: A method for producing logs of paper comprises: feeding a continuous paper web along a fixed path; transversely perforating the paper web such that the paper can be subdivided into various lengths and detached by tearing; feeding tubes such that a preset number of sheets are wound onto said tube to form a log, the tubes being guided in a tube-guiding channel extending between a tube-feeding station and a log-forming station, the channel being delimited in part by a fixed guide and in part by a roller for feeding the paper; and applying glue within the channel such that the last sheet is glued to the log being formed and the paper web is glued to the next tube.

Abstract: A method for producing logs (L1, L2) of web material (N) wound around tubular cores wherein the tubular core (A1-A4) is equipped with glue to secure the initial end of the web material and allow winding. Part of the glue applied to the tubular core is transferred to the web material (N) before it is severed upon termination of winding the log, to seal the final free end of the formed log.

Abstract: In a rewinding machine for winding web material onto a core to form rolls which has an unusual capability for accurate regulation of the winding, the web material is supplied to a winding drum and is transferred to the core to form the roll. The core is supported, rotated in controlled manner, and transported along a path in which the roll of web material wound on the core is enlarged whilse bearing continuously on the winding drum.

Abstract: The invention refers to a rewinding machine and a method for producing logs of paper; the machine comprises means for feeding a continuous paper web (2) along a predetermined path, means for operating a series of discontinuous transverse cuts in order to subdivide the web (2) into portions of sheets of predetermined length to be separated by tear, means for feeding tubular cores (1) upon each of which a preset number of sheets is to be wound to form a log, a cores (1)-guiding channel (C) which extends between a cores (1)-feeding station (A) and a station at which a log (RO) is formed, the said channel (C) being delimited in part by a fixed guide (3) and in part by a roller (RA) which cooperates for the feeding of the paper (2); the machine comprises a device (4, 5; 32, 31) able to deliver predetermined amounts of glue within said channel (C), the said device including first and second means (4, 31; 5, 32) located and acting on corresponding preset points being located between the station (A) for feeding the c

Abstract: A rewinder having a first winding roll that transports and supports the web, and a second winding roll located a distance from the first winding roll to define a nip therebetween. The rewinder also include at least one core support plate that is curved for receiving and guiding cores adjacent the first winding roll, a contact finger located adjacent the first winding roll, and a web separation bar adjacent the first winding roll and movable into pressing relationship with the web to press the web against the contact finger to separate the web. In some embodiments, the contact finger is recessed within the first winding roll such that the web separation bar presses the web only against the contact finger to separate the web.

Abstract: A rewinder having a first winding roll that transports and supports the web, at least one core support plate that is curved for receiving and guiding cores adjacent the first winding roll, and a web separator adjacent the first winding roll and movable into pressing relationship with the web at a velocity at least equal to that of the web. The rewinder of exemplary embodiments winds a web of material a nip defined by the first winding roll, a second winding roll and a rider roll. The web separator of exemplary embodiments comprises a rotatable plurality of fingers that rotates about a common shaft. Because the web separator contacts the web moving at a velocity at least equal to that of the web, the web is effectively separated upstream of the web separator, between the core and the web separator.

Abstract: A peripheral winding machine for the production of rolls of wound web material is described, comprising a feed path for the web material (N), winding means (1, 3, 5) for winding said web material into rolls (L), and a zone for interruption of the web material along said feed path and upstream of said winding means, characterized in that it comprises applicator members (7B) for applying a moistening product to said web material upstream from said winding means and downstream from said interruption zone.

Abstract: The present invention provides an apparatus and a method for forming and ejecting logs from the winding cradle of a surface-driven rewinder comprising a winding cradle formed by a plurality of parallel rollers having gaps there between and wherein at least one of the rollers is moveable relative to the others thereby forming first and second gaps of variable length. The rewinder further includes a first driver that is operatively connected to and controls the rotational speed of at least one of the rollers, and a second driver that is operatively connected to and controls the rotational speed of at least one of the rollers, and wherein the rollers driven by the first driver are different than the rollers driven by the second driver. The rotational speed and/or direction of one or more of the rollers can be varied whereby a log of sheet material formed within the winding cradle can be ejected through either the first or second gap.

Abstract: A rewinding machine for the production of logs of web material around a tubular core includes a first winding roller around which the web material is fed, a second winding roller forming a gap with the first winding roller, through which gap the core is inserted, and a third roller mounted movably to allow the diameter of the log to increase and the log to be discharged at the end of winding. A blade is carried by a rotating member which is pivoted on the axis of said first winding roller and protrudes from the profile of the roller. The blade rotates in the same direction as the first winding roller at different speeds, so as to undergo a deceleration or an acceleration when it is in contact with the web material in the winding space defined by the three rollers to cause severing of the web material at the end of winding.

Abstract: The present invention provides an apparatus and a method for forming and ejecting logs from the winding cradle of a surface-driven rewinder comprising a winding cradle formed by a plurality of parallel rollers having gaps there between and wherein at least one of the rollers is moveable relative to the others thereby forming first and second gaps of variable length. The rewinder further includes a first driver that is operatively connected to and controls the rotational speed of at least one of the rollers, and a second driver that is operatively connected to and controls the rotational speed of at least one of the rollers, and wherein the rollers driven by the first driver are different than the rollers driven by the second driver. The rotational speed and/or direction of one or more of the rollers can be varied whereby a log of sheet material formed within the winding cradle can be ejected through either the first or second gap.

Abstract: The rewinding machine for the formation of logs (L) of web material (N) wound on a core (A), includes a first winder roller (15) around which the web material (N) is fed, and a second winder roller (17) forming, with the first winder roller, a nip (19) through which the core (A) and the web material (N) pass. A web material-severing device (43) cooperates with the first roller (15). Located upstream of the nip (19), with respect to the direction of movement of the web material (N), is a surface (33) defining, with the roller (15), a channel (39) into which the core (A) is inserted. A conveyor (47; 57; 67) introduces a core into the channel (39). The material-severing device (43) cooperates with the roller (15) along the channel (39) between the region of insertion of a new core and the nip (19).

Abstract: A carpet rolling machine for quickly and efficiently rolling carpet around a core without causing damage to the carpet. The machine includes a moveable dispenser for applying an adhesive flap to the core prior to winding the carpet around the core. The leading edge of the carpet is positioned between the flap and the core so that it may attach to the adhesive on the interior surface of the flap. Once the leading edge of the carpet is properly positioned, the carpet is wound around the core by a roll up.

Abstract: Winding device and process for winding wound rolls. The winding device includes a pressure roll axially divided into separate sections and a winding arrangement. The pressure roll is arranged to be placed on the winding arrangement. A coupling device is arranged to axially couple the separate sections together, and a drive unit is arranged to commonly rotatably drive the axially coupled separate sections. The process includes axially coupling the separate sections of the pressure roll together with the coupling device, rotatably driving the axially coupled separate sections, and pressing, at a beginning of a winding procedure, the separate sections of the pressure roll against the wound rolls.

Abstract: Process for winding a reel and a reel winding apparatus, as well as a measuring apparatus. The process includes determining the driving forces at the locations of the introduction of the driving force onto the reel, and determining a difference between the driving forces. The reel winding apparatus includes at least first and second drive mechanisms arranged to act on a reel to be wound, a measuring system, coupled to the at least first and second drive mechanisms, that includes a force transducer arranged in a vicinity of an introduction of force into the reel, and an evaluation device coupled to the force transducer. The measuring apparatus is provided for measuring a difference in peripheral forces between at least first and second drive elements in a reel winding device. The apparatus includes first and second contacts adapted to contact the first and second drive elements, respectively, and a transducer coupled to the first and second contacts.

Abstract: A multi-carrying-roll winder, and method for winding a material web with a multi-carrying-roll winder. The multi-carrying-roll winder comprises a first carrying roll, a second carrying roll, a loading device, and a controller. The first and second carrying rolls contact a reel upon which a material web is to be wound, such that the first carrying roll is driven to wind the material web onto the reel. An additional loading device contacts a circumference of the reel to additionally drive the reel. A controller adjusts an amount of driving power applied to the reel by each of the first carrying roll, the second carrying roll and the additional loading device.