A motorization group of reels in a machine for winding plastic film onto bobbins, wherein at least two spindles are positioned on a rotating plate around a central shaft constrained to a frame of the machine, a motor being operatively coupled to each of the spindles, in the motorization group each of the motors being constrained to the frame and connected to each of the spindles by a belt transmission which comprises a central deflector unit aligned with a central shaft outside the frame, toothed belts connecting the central deflector unit, on the one hand, to the spindles, and on the other hand, to the motors.

A winding machine (10) is disclosed comprising at least one reel holder (12) mounted on a supporting frame (11) and N rotatable around its own axis (13), and a plurality of reels (1-4) mounted on the holder (12) and integrally rotatable therewith so that at least one first reel (1) is in at least one operative winding position of a bobbin (5). It is further described a respective method for the in-line winding of bobbins (5) of stretch film (6), comprising the steps of rotating a core (7) on a reel (1) in an operative winding position to wind the film (6) onto the core (7), positioning a contact roll (15a) in at least one proximal contacting position in which it contacts the winding bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the core (7), bringing the reel (1) from the operative winding position of the bobbin (5) to an operative unloading position of the bobbin, positioning an accompanying roll (15b) in at least one proximal contacting position in which it contacts the bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the bobbin (7), transversally cutting the stretch film (6) and unloading the bobbin (5). The movement of the contact roll (15a) and the accompanying roll (15b) is carried out by means of electric actuators (18a, 18b).

A winder includes a winding mechanism, a chamber housing the winding mechanism, at least one vacuum pump, and a product case. The winding mechanism is configured to wind a belt-shaped raw film around a winding core. The belt-shaped raw film is composed of a plurality of electrodes and a plurality of separating films. The at least one vacuum pump is configured to suck air into the chamber. The product case is configured to house a plurality of winding products each formed by winding the raw film with use of the winding mechanism disposed in the chamber.

An apparatus (100) for making a coil (B) comprises a feed unit (2) configured to feed at least one strip-shaped article (N) and a winding unit (1). The winding unit includes a plurality of winding heads (10) and a movement device for moving (3) said winding heads (10) configured to displace said winding heads (10) along a working path (P). Each winding head (10) is configured to wind said strip-shaped article (N) so as to make said coil (B) during a displacement, carried out by said movement device (3), of the winding head (10) along an operative segment (P1) of the working path (P).

Manufacturing machine (9) and method for manufacturing a cylindrical electrochemical cell (2) consisting of a spiral winding of a composite material (8) comprising at least two conductor bands (4, 6) and at least two separator bands (5, 7) overlapping one another. They are provided: a plurality of winding heads (13), each of which supports a holding device (14) which is configured to grab an end of the composite material (8) and to rotate on itself around a first rotation axis (15) so as to obtain a spiral winding of the composite material (8); a drum (11) which supports the winding heads (13) and is rotatably mounted to rotate with a continuous law of motion around a second rotation axis (12) so as to move the winding heads (13) along a processing path (P2); and a feeding unit (10) configured to feed the composite material (8) to the winding heads (13). A segment of the processing path (P2) is substantially straight and each holding device (14) is configured to grab one end of the composite material (8) and hence start the spiral winding of the composite material (8) while the corresponding winding head (13) moves along the substantially straight segment of the processing path (P2).

A winding device for successively winding at least one material web, particularly a plastic film web, onto spools. The winding device includes a machine frame, at least one wheel which is mounted on the machine frame in a manner allowing rotation, at least two winding points for carrying the spools, which are mounted in the wheel in a manner allowing rotation, of which a first winding point is positionable in a winding position, and a second winding point is positionable in a loading and/or unloading position, with at least one guard element that is pivotably positionable in a region between the spools respectively associated with the first winding point and the second winding point.

An apparatus for making a coil comprises a feed unit configured to feed at least one strip-shaped article and a winding unit. The feed unit comprises a coupling device configured to couple said strips in said strip-shaped article. The winding unit includes at least one winding head. Each winding head is configured to wind said strip-shaped article so as to make said coil during a displacement, carried out by said movement device, of the winding head along an operative segment of the working path. The coupling device is configured such as to couple said strips in said strip-shaped article during a respective displacement along an operative path between a first position and a second position, which are distinct from each other.

A winding device including: a merging equipment, for merging a passing first diaphragm, a passing cathode pole piece, a passing second diaphragm and a passing anode pole piece to form a combined material strip; a first pole-piece-processing equipment, for cutting off the passing cathode pole piece, separating from each other a first upstream cut-off end and a first downstream cut-off end, and connecting them with a tape; a winding equipment, including a turret and at least two winding needles, the turret driving each of the winding needles to pass by a first station and a second station sequentially; and a guiding roller and a cutting-off equipment.

A winding device includes: a first unwinding equipment, a second unwinding equipment, a third unwinding equipment and a fourth unwinding equipment, respectively configured for outputting a first diaphragm, a cathode pole piece, a second diaphragm and an anode pole piece; a merging equipment, configured for merging passing material strip layers; a pole-piece-inserting equipment, configured for cutting off the passing cathode pole piece, and transporting a starting end of the cathode pole piece downstream; a winding equipment, including a turret and at least two winding needles, the turret is adapted to drive each of the winding needles to pass by a first station and a second station sequentially; and a guiding roller, the layers of material strip located between the first station and the second station winding through the guiding roller.

An apparatus for the production of inner assemblies, including a feeding unit configured to feed at least one web along a feed path, a movable frame, movable between a proximal position and a distal position, the proximal position being closer to the feeding unit than the distal position, at least one winding device mounted on the movable frame and configured to wind the at least one web around a winding support to form an inner assembly, a holding member mounted on the movable frame, movable between a holding configuration, wherein the holding member is configured to hold the inner assembly wound on the winding support, and a disengagement configuration wherein the holding member is configured not to hold the inner assembly wound on the winding support, an extraction mechanism configured to extract the winding support from the inner assembly at least partially while the holding member holds the inner assembly.