The unwinder includes an unwinding station, in which to arrange a reel to be unwound. In the unwinding station there is arranged a series of guide rollers, defining a feed path of the web material. There are also provided: a cutting member adapted to cut a web material coming from an exhausted reel; and splicing members to splice a trailing edge of a first web material coming from an exhausted reel to a leading edge of a second web material coming from a new reel. A pick-up device is configured to pick up the leading edge of the second web material from a temporary retaining element, carried by a transfer unit to transfer reels to the unwinding station.

An automatic replacement device of a secondary battery material including reel support parts to support a supply reel; a material support part spaced apart from the reel support part; clamping parts, each including a clamping roller to come into contact with the material when replacing the supply reel, a vacuum suction part to suction the material by vacuum, a clamping frame to rotatably support the clamping roller and the vacuum suction part, and a cutter to cut the material when coming into contact with the material; first drive parts to move the clamping roller toward/away from the material; and second drive parts to move the cutter toward/away from the material, wherein the automatic replacement device cuts the material as the material is suctioned to the vacuum suction part after being adhered to a material wound around a replacement supply reel when the supply reel is replaced.

Devices, methods, and systems for splicing a trailing edge of an outgoing roll with a leading edge of a replacement roll with a lapless butt splice on-the-fly during converting and printing production. A first strip of adhesive tape may be placed partially under the leading edge, such that a portion of the adhesive tape remains exposed beyond the leading edge. The replacement roll may be accelerated to match the speed of the outgoing web's movement, a trailing edge of the outgoing web may be cut free from the outgoing roll, and the trailing edge of the outgoing roll may be positioned over the exposed portion of the adhesive tape. A second strip of adhesive tape may be applied over the leading edge and trailing edge using a splicer roller timed to apply the tape when the edges pass proximate to the splicer roller.

An apparatus for generating a roll map of a merge-wound electrode includes a position measurement device configured to acquire coordinate value data for a longitudinal position of an electrode according to an amount of rotation of the rewinder. The apparatus includes an input device configured to input an input signal indicating a start of merge-winding or an end of merge-winding, a seam detector configured to detect a seam, a reference point detector configured to detect a plurality of reference points of the merge-wound electrode, and a roll map generator configured to generate a roll map for simulating the merge-wound electrode moving in a roll-to-roll state based on the input signal of the input device, and to display the longitudinal coordinate values of the electrode, the electrode coordinate values of the seam, and the electrode coordinate values of the plurality of reference points of the merge-wound electrode on the roll map.

Unwinder of a thin ply product wound on a roll, comprising a first roll-holder assembly equipped with a first unwinding rod for a respective roll, on which the roll is adapted to be supported, and which has an axis of rotation transversal to the direction of movement of the ply unwound from the roll, a second roll-holder assembly equipped with a second unwinding rod of a respective roll, on which the roll is adapted to be supported, said second rod being parallel to said first unwinding rod of the first roll-holder assembly, said second roll-holder assembly facing said first roll-holder assembly in an unwinding zone, a ply splicing assembly placed above said first and second facing roll-holder assemblies, a ply accumulation unit to allow automatic switching between a roll being unwound in one said roll-holder assembly and a spare roll provided in the other roll-holder assembly, a system for the lateral movement of each of said unwinding rods with respect to said unwinding zone, from said unwinding zone to a loading zone wherein said rolls are outside said winding zone to facilitate loading the rolls into the respective roll-holder assemblies, wherein said splicing assembly can be moved from a working position above the two said roll-holder assemblies in said unwinding zone, to a working position above an extracted roll assembly in the loading zone, to allow preparation for splicing of the leading edge of the ply wound on the spare roll.

A splice mechanism (100) for a packaging assembly (10), the packaging assembly (10) including: a former shoulder (12); a controller (14); a film drive (16) controlled by the controller (14) for feeding a film (112) at a film speed to the former shoulder (12) to form a tubular film (22) moving in a film direction (20); a sealing device (24) to seal the tubular film (22) in a first sealing direction (26), the first sealing direction (26) being parallel to the film direction (20); a set of jaws (28) controlled by the controller (14) and movable at a jaw speed to engage and seal the tubular film (22) in a second sealing direction (30) to form a first seal (32) and a second seal (34) in each bag, thereby forming a closed bag (36), the splice mechanism (100) including: an active film roll (110) from which film (112) is drawn to be fed to the former shoulder (12) by the film drive (16); a second film roll (120) having film (122) for feeding to the former shoulder (12); a film roll holder (130) holding the active film roll (110) and the second film roll (120) such that film (112) from the active film roll (110) extends along a film path (140) to the former shoulder (12) and the second film roll (120) is accessible; a splice roller (150) against which film (122) from the second film roll (120) is placed, the film (122) having a film end (124), the film end (124) having an adhesive (126), the splice roller (150) being movable between a free position, wherein the film path (140) is unimpeded by the splice roller (150), and a splice position, wherein the film path (140) is tangential to the splice roller (150) at a splice point (142) on the film path (140).

System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (P) for picking up the reels configured to receive a stack (2) of overlapping cardboard reels (1), a station (U) for unwinding of the reels comprising at least one unwinding unit (UU), and handling means (D) for moving the reels (1) along a predetermined path between the reel pick-up station (P) and the unwinding station (U). The reel handling means are provided with an additional reversible device for hooking the reels to the handling means themselves.