Abstract: A set changing device of a slitter-winder has a pusher device for pushing completed wound fiber web rolls (10) of partial webs cut with a slitter-winder and carried by carrier means (11, 18?) forward from the winding-up section (1). The pusher device has at least two press rolls. The position of at least one of the press rolls (2, 3) with respect to the body (17) of the pusher device (6) is arranged to change during pushing.

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 method for rewinding a web of sheet material for making a log wound on a core in a winding zone formed between an upper winding roller and a lower winding roller. Upstream of the winding zone a cradle is provided for feeding the core connected to the support of the lower roller and located beneath the upper winding roller. At least a portion of the cradle is movable with respect to the support of the lower roller and is capable of lowering or rising towards/away from the upper winding roller. For each step of feeding a core, the movable portion can be displaced from a first position of load of the core to a second position wherein the core contacts the upper roller. When the upper roller contacts the core for reaching the winding zone it moves first on the movable portion and then on a fixed portion of the cradle that is integral to the support wherein the axle rotates of the lower roller.

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: Process and apparatus for damping vibrations in a machine for winding material webs, in which the apparatus includes at least two cylindrical bodies. The process includes positioning the at least two cylindrical bodies to roll on each other to form a nip, such that at least one of imbalance and out-of-roundness of either of the at least two cylindrical bodies form a system capable of vibration. The process further includes actively damping vibrational forces of the vibration system in at least one of the at least two cylindrical bodies by displacing an axis of rotation of the at least one of the at least two cylindrical bodies in accordance with a current one of a plurality of vibrational force measurements made per each rotation of the at least one of at least two cylindrical bodies and with additional energy fed from outside of the vibration system.

Abstract: The structure of a fibrous web roll is controlled by winding a fibrous web (W) into a fibrous web roll (15) through a winding nip (N) between the fibrous web roll (15) being formed and a winding drum (13). The structure of the fibrous web roll (15) being formed is controlled by regulating the direction of passing the web to a windup, thereby regulating the wrap angle.

Abstract: The invention relates to a winding device (1) for winding up and unwinding goods (2) in web form, in particular a conveyor belt, whereby the wound goods (3) are supported on a substructure (4). The substructure has at least two support rollers (5, 6), which are disposed at a distance (A1, A2, A3) from one another, whereby the support rollers are adjustable, changing the distance, in order to adapt themselves to any winding diameter (D1, D2), whereby the movement sequence of the support rollers takes place in such a manner that the wound goods are furthermore securely supported. It is practical if the winding device (1) is provided with lateral supports (7), which have a wheel that is adjustable in height, which is set to the center (M1, M2) of the wound goods (3). Lateral migration is prevented in this manner, for the purpose of optimizing a secured position.

Abstract: A core locking device has members (25) for locking the device (17) to a winding core of a roll to be wound on a two-drum winder, advantageously to a core. The device (17) is placed on a slide arranged in connection with the two-drum winder, and moves, as winding progresses, with the center of the roll being formed along the slide. The device (17) has an actuator (20) to produce a counterforce for the force caused by the mass of the core locking device (17) in the changed position of the core locking device (17).

Abstract: A method controls the response rate and profile of a variable parameter. The method determines an error value for a first variable parameter as the difference between a first parameter set point and a first parameter analog value. An output, controlled by a first variable-process-parameter control loop, adjusts according to the determined error value to adjust the parameter analog value and thereby reduce the error value at a response rate. The first variable-process-parameter control loop has a gain. The gain of the first variable-process-parameter control loop determines the response rate and the response profile. The analog value of a second variable parameter determines the gain. Adjusting the response rate of the control loop may provide a means of adjusting an error correction response profile of the first variable parameter.

Abstract: The rewinding machine comprises a winding roller (5) equipped with a moving axis to remain in contact with a log (R) being formed and allow the diameter of said log to increase. A member to control the action of said roller on the log (R) being formed is associated with the winding roller with moving axis. The control member is provided with a stop position that can be set to be reached before winding of the log (R) is completed. Winding of the log being formed is essentially completed without moving the axis of the winding roller with moving axis (5) in order to obtain a finished log always with a more or less constant diameter.

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: 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 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 device for re-reeling and forming a roll of paper in a re-reeling machine comprising, on a frame, three rollers (16, 17, 18) having mutually parallel axes that are perpendicular to the direction of feed of the paper (11), in which two winding rollers, a bottom one (17) and a top one (16), supported on the frame, co-operate with a third roller (18) that maintains a certain pressure on a roll of paper or log being formed, where the third roller (18) is carried by a pair of arms (22) which can oscillate with respect to the frame, the paper (11) that is being wound passing over one of the two rollers, and the finished roll or log (19) coming out of an outlet aperture or gap (30) identified between the bottom roller and the third roller, and the cores (12) for said rolls being fed, one after another, by a pusher conveyor (15) and being introduced into a channel (24) made underneath the top roller (16) by an oscillating pusher (27, 35) which co-operates for inserting the core (12), possibly provided with adhesive

Abstract: A web is wound onto a core (21) while supported by winding drums (11, 12). The web is cut by a cutting device (19), and a finished web roll (10) is removed by a transfer device (16). A new core (21) is moved to a space between the winding drums (11, 12), and the winding is stopped to remove the finished roll (10) and to start a new roll. The core is moved onto support of one winding drum and a support member (22) and held in place by the support member (22) until the movable winding drum (11, 12) has been moved to the starting position of winding.

Abstract: A drum type continuous winder for winding slit sections of a web onto individual cores on a core shaft (20) includes a pair of primary support arms (24, 25) having radial slots (28) that receives the core shaft from a fixed cam plate (29) permitting the core shaft to move with the cores into engagement with a moving web on a main winding drum (22) for web cutting and transfer to fresh cores. A driven nip roll (30) supported on arms (24, 25) engages the cores on the core shaft during web transfer so that the core shaft is sandwiched between the nip roll (30) and the primary drum (22) providing web transfer onto the cores free of critical speed limitations. Secondary arms (50, 51) which receive the core shaft support a secondary winding drum (52) in guide tracks (55) for radial movement into engagement with the rolls being wound.

Abstract: The apparatus for winding at lest one web (1), on a winding roll (2), comprises at least a first roll (3), a second roll (4) and a third roll (5) parallel to one another and to said winding roll (2), said apparatus having a nominal winding position in which: a driving torque is applied to at least one of rolls (39, (4) and (5) as to rotate in the direction of said web (1) in order to compensate for the rolling resistance of said apparatus.

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: A method of making wet rolls includes providing a web of material, applying a wetting solution to the web to produce a wet web, and winding the wet web into a roll. The wetting solution may include an inorganic salt and at least one preservative.

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: 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: The structure disclosed aims to provide a band plate winding system capable of high speed winding at a low cost. The band plate winding system comprises a carrousel type winder having a plurality of individually driven mandrels on a circular support frame provided so as to be rotationally drivable in a vertical plane, and a roll type wrapping device for supporting a plurality of unit rolls each provided so as to be moveable forward and backward between a position surrounding the mandrel located at a winding start position of the winder and a retreat position.

Abstract: A method of making wet rolls includes providing a web of material, applying a wetting solution to the web to produce a wet web, and winding the wet web into a roll. The wetting solution may be applied at an add-on greater than 25%, and the web may travel at a speed of at least 60 meters per minute.

Abstract: A device for re-reeling and forming a roll of paper in a re-reeling machine comprising, on a frame, three rollers (16, 17, 18) having mutually parallel axes that are perpendicular to the direction of feed of the paper (11), in which two winding rollers, a bottom one (17) and a top one (16), supported on the frame, co-operate with a third roller (18) that maintains a certain pressure on a roll of paper or log being formed, where the third roller (18) is carried by a pair of arms (22) which can oscillate with respect to the frame, the paper (11) that is being wound passing over one of the two rollers, and the finished roll or log (19) coming out of an outlet aperture or gap (30) identified between the bottom roller and the third roller, and the cores (12) for said rolls being fed, one after another, by a pusher conveyor (15) and being introduced into a channel (24) made underneath the top roller (16) by an oscillating pusher (27, 35) which co-operates for inserting the core (12), possibly provided with adhesive

Abstract: The present invention aims to provide a band plate winding system capable of high speed winding at a low cost. The band plate winding system comprises a carrousel type winder (5) having a plurality of individually driven mandrels (7) on a circular support frame (6) provided so as to be rotationally drivable in a vertical plane, and a roll type wrapping device (10) for supporting a plurality of unit rolls (22a to 22d) each provided so as to be movable forward and backward between a position surrounding the mandrel located at a winding start position of the winder (5) and a retreat position.

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: A rotor winder and a method for operating the rotor winder, wherein the rotor winder has two rotors supported in a rotatable rotor with two winders which are driven independently from one another and are provided for successive continuous winding of hot strip. Each winder has a winder mandrel including several moveable segments for expanding the winder mandrel, wherein the segments are supported on axially moveable wedge-shaped gliding surfaces. The winders are moveable in cycles from an initial position into the coil transfer position by rotation of the rotor. A device is provided for guiding an incoming hot strip onto the winder mandrel of the winder positioned in the initial position and for holding the strip on the winder mandrel until a slip-free engagement of the strip is effected. The device for guiding and placing the incoming strip is arranged on a power-driven frame mounted so as to be moveable in a direction extending parallel to the axis of the winder.

Abstract: The invention relates to a strip winder (1) for winding a hot or cold strip (25) into a coil, comprising a winder mandrel (2), pressure rolls (6-8) which can be in the form of comb rolls (6′-8′) deflection cups (9-11), and a feed shaft (20). The aim of the invention is to improve a strip winder of this type so that a hot or cold strip (25) can be wound securely on the winder mandrel (2) even at high speeds and when the strip is thin. To that end, the deflection cups (9-11) have channels (18) whose outlet openings (19) are located in the cup area and the channels (18) are connected to a medium supply system.

Abstract: A winding machine for winding rolls of web material in which the rolls are supported by at least one roller beneath them and at least one support roller can be brought into engagement from the roll from beneath and is provided on its surface with a compressible layer of porous synthetic material.

Abstract: The rewinding machine comprises a pair of lower winding rolls (11, 13) defining a winding cradle, which are movable from an upper position toward a lower position during the winding of a reel (R), in order to keep the axis of the developing reel in an essentially fixed position.