Abstract: The machine (1) comprises: —an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (N; S); —at least one winding station (15) comprising a winding device (25) and further comprising: guide members for guiding the strip (S) of web material, configured to form at least a loop of web material between a guide roller (43) and a log (B); and a cutting device (61) for transversally cutting the strip (S) of web material in an intermediate position between the log (B) and the guide roller (43), thus generating a tail edge, remaining on the log (B) being formed, and a leading edge, remaining fastened to the guide roller (43).

Abstract: A machine (1) includes an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (N), an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one winding station (15). The winding station in turn includes a winding device (41, 51), to which a longitudinal strip (S) of web material is fed. In the winding station, a respective spool (B) of web material is formed. The winding station (15) further includes: a cutting device (81, 83) for the longitudinal strip (S), to cut the longitudinal strip (S) transversely, thus forming a tail edge, which remains on the spool (B) under formation, and a leading edge; and a holding device (85) for holding the leading edge of the longitudinal strip (S), to transfer the leading edge onto a tubular winding core (T) of a new spool to be wound.

Abstract: The line comprises: an unwinding section (3) for unwinding parent reels (Ba, Bb, Bm) of web material (Na, Nb), with at least a first unwinding station (5; 7); at least a winding station (15) downstream of the unwinding section (3); a feed path from the unwinding section (3) toward the winding station (15); The unwinding section (3) is associated with a loading arrangement of the parent reels (Bm), which comprises: an upender (253; 306) configured to upend the parent reels (Bm) positioning them with their axis horizontal; and a loading robot (263; 313), configured to position a parent reel (Bm; Ba, Bb) on an unwinding mandrel (9) of the unwinding section (3).

Abstract: The machine comprises an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one unwinding station (15). A winding device (41, 53) is arranged in the unwinding station, and a longitudinal strip (S) of web material is fed to it and a respective spool (B) of web material is formed in it. A control unit (70) is also provided, configured to control the winding speed of the longitudinal strip (S) in the winding station (15), so as to perform an acceleration cycle to accelerate the winding of the longitudinal strip (S), comprising at least one step of gradually increasing the feeding speed (Vp) of the longitudinal strip (S), wherein the feeding speed is linked to the diameter of the spool (B).

Abstract: The machine (1) comprises: an unwinding section (3) of parent reels (Ba, Bb) of web material (Na, Nb); a cutting station (13), comprising a plurality of cutting members (201, 203) to divide the web material (Na, Nb) into longitudinal strips (S); a plurality of winding stations (15); in each winding station (15), a guide arm (31) to guide the longitudinal strip (S), adjustable parallel to the rotation axis (C-C) of the winding mandrel (51). The cutting station (13) comprises sensor members (213, 214) to detect the position of the cutting members (201, 203). A control unit (216) is interfaced with the sensor members (213, 214) of the cutting station (13) and the positioning actuators (27), to position the guide arms (31) parallel to the rotation axis (C-C) of the respective winding mandrel (51) as a function of the position of the corresponding cutting member (201, 203).

Abstract: An unwinder of reels of web material wound around winding spindles (A), includes a unwinding station (13) with at least one unwinding member (23) to rotate a reel (B) that is located in the unwinding station and feed the web material toward a delivery path (E). Lifting members (51, 53) are provided to lift a spindle of a first exhausted reel from the unwinding station (13), in a removal position (PR). An insertion member (7; 33) is further provided to insert a second reel into the unwinding station (13). A pressing member (61) is arranged to press the web material coming from the first reel in removal position (PR) against the second reel in the unwinding station (13).

Abstract: The unwinder of reels of web material wound around winding spindles (A), comprises a unwinding station (13) with at least one unwinding member (23) to rotate a reel (B) that is located in said unwinding station and feed the web material toward a delivery path (E). Lifting members (51, 53) are provided to lift a spindle of a first exhausted reel from the unwinding station (13), in a removal position (PR). An insertion member (7; 33) is further provided to insert a second reel into the unwinding station (13). A pressing member (61) is arranged to press the web material coming from the first reel in removal position (PR) against the second reel in the unwinding station (13).

Abstract: Disclosed is a system to be combined to one or more rewinding machines (1) for forming reels or logs of web material wound around winding mandrels. The system, whose function is to prepare the winding mandrels with the related winding cores positioned thereon, comprises in combination: a robot (5) for extracting winding mandrels (A) from formed reels (BB); a cutting unit (7) for cutting tubes (T) for forming tubular winding cores (AT) of settable axial length; an insertion unit (9), for introducing the winding mandrels into a set of tubular winding cores.

Abstract: A system to produce rolls of web material includes: a production machine (1) to produce the web material; a winder (3) to form reels (B) of web material coming from the production machine; an unwinder (20) to unwind single reels of web material produced by the winder; a group of tools for longitudinal cutting of the web material to divide the web material into strips, including members to position the tools in a transverse direction with respect to the direction of feed of the web material; a rewinder (22) to rewind the single strips into rolls; a line for packaging (9) the rolls (R); at least one shuttle (11) to transfer groups of rolls formed by the rewinder towards the packaging line; and an information system for integrated management of the system.

Abstract: A robot for handling rolls of web material, is disclosed. The robot includes an articulated arm (60), moving according to a plurality of numerically controlled axes and supporting a suction head (61A).

Abstract: The device to position tubular winding cores on a common supporting and rotating shaft comprises: supporting members for said shafts AS and gripping and handling members 23A, 23B of the winding cores A parallel to the axis of said shaft AS.

Abstract: The rod (A) for winding reels of weblike material includes a cylindrical surface for winding of the weblike material, on which members (P) for engagement of an initial portion of the weblike material to be wound.

Abstract: A device for dry forming a web of fibers. The device includes; a fiber distribution head (1); a forming wire (3) movable under the head; a suction means (5) located on the opposite side of the forming wire from the head; within the head, a chamber (9) into which a flow of gas, in which said fibers are suspended, is directed, the chamber having a bottom opening (9A) closed by a screen mesh (17) which is essentially parallel to the forming wire (3) and which faces the the forming wire; and agitator members (45) inside the chamber, above the screen mesh (17), for agitating and distributing the fibers. The screen mesh (17) is a continuous mesh, movable along a closed path around the chamber, the portion of the mesh parallel to and facing the forming wire moving along a path which is essentially parallel to the forming wire. Additionally, the agitator members comprise a plurality of rotating shafts (47) which are parallel to each other and orthogonal to the direction of advance (f3) of the forming wire.

Abstract: A mixing device (9) for fibers in a gaseous flow, specifically designed to be arranged on the line supplying a head for forming air-laid webs, is described. The device comprises a duct (11) for fibers suspended in a gaseous flow, with an inlet (13) and an outlet (15). A plurality of rotors (16-19), perpendicular to said flow and equipped with radial elements (43), is provided between the inlet and the outlet.

Abstract: A mixing device (9) for fibers in a gaseous flow, specifically designed to be arranged on the line supplying a head for forming air-laid webs, is described. The device comprises a duct (11) for fibers suspended in a gaseous flow, with an inlet (13) and an outlet (15). A plurality of rotors (16-19), perpendicular to said flow and equipped with radial elements (43), is provided between the inlet and the outlet.

Abstract: The rewinding machine comprises: a first and a second lower winding roller (5, 7) defining a winding cradle for a reel (R) of web (N); a third upper roller (13) having a mobile axis (13) arranged over said first and second lower winding rollers and carried by two mobile slides (11) to allow for the increasing dimension of the reel under formation in said winding cradle. The two slides (11) carry two cylinders (21, 27) whose axes are parallel to the axis (13A) of the third upper roller (13) which are provided with a reciprocal approaching and distancing movement for either approaching or distancing the reel under formation in said cradle.