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 about a second rotation axis (12) so as to move the winding heads (13) along a processing path (P2); a feeding unit (10) configured to feed the composite material (8) to the winding heads (13); and a cutting device (28) which is configured to cut the composite material (8) and thereby create a new free end of the composite material (8) while the composite material (8) is still being wound by a first winding head (13). A second winding head (13), which follows the first winding head (13) along the processing path (P2), is configured to grab the new free end of the composite material (8) and start the winding of the composite material (8) while first winding head (13) is still completing the winding of its own composite material (8).

A film roll/bags-on-a-roll making machine includes a feeding unit for transferring a film/sheet of bags, a reel displacement unit for cycling a reel through a reel let-off position, a reel-supplying position, a film-rolling position and a film-cutting position for enabling the reel to roll up the film/sheet of bags into a film roll/bags-on-a-roll, a cutting device for cutting off the feeding film/sheet of bags from the film roll/bags-on-a-roll at the reel that is cycled to the film-cutting position, and a control unit for controlling the operation of the feeding unit, the reel displacement unit and the cutting device.

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 which is mounted in a rotary manner so as to rotate with a continuous law of motion around a second rotation axis (12) in order 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).

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 at least a first winding head (10A) and a second winding head (10B) and a movement device (3) of said winding heads configured to displace said winding heads (10) along a working path (P). The distance between the first winding head (10A) and the second winding head (10B) along said working path (P) may be varied.

Apparatus for winding at least one strip of material for the production of electrical energy storage devices, comprising: a rotatable winding core, configured to grip the strip and actuatable to carry it in rotation and thus form a winding; a feed unit to feed the strip of material; and a handling device configured to move the winding core at least between a winding station, at which the winding core is configured to receive the strip in feeding, grip it and wind it about the rotation axis, and a second station; wherein the handling device is configured to move the winding core from the winding station to the second station during the winding.

A method for winding a material sheet, in particular a plastic film, by a winding device, wherein the material sheet is guided from at least one first roller to at least one second roller in a conveying direction. At least one cutting device is arranged between the first roller and the second roller to cut the material sheet into at least two partial sheets. The partial sheets are each wound up into a bobbin in the conveying direction behind the second roller. The at least one first roller and the at least one second roller are each driven by a drive so that the tensile stress in the material sheet or in the partial sheets changes periodically over time in the conveying direction of the material sheet.