A sheet conveyor includes: a drum to: carry a sheet on a circumferential surface of the drum; and rotate to convey the sheet; and adhering part to adhere the sheet to the circumferential surface of the drum, wherein the drum has: both end parts in an axial direction of the drum, the both end parts each having a first outer diameter in a radial direction orthogonal to the axial direction; and a center part between the both end parts in the axial direction of the drum, the center part having a second outer diameter smaller than the first outer diameter in the radial direction.

A method for winding a foil onto a winding core in order to form a coil and for unwinding the foil from the winding core. The foil comprises a support material of an electrode foil and an electrode foil, which has at least one active material, or a separator foil which are used as components of a battery cell. The winding core has a perforated circumferential surface with at least one opening. A coil is also provided that has at least a winding core and a foil which is wound on the winding core.

An orifice plate having orifice openings is interposed between a roller body and a side plate. In a closed region of an outer peripheral surface of the roller body which is covered with a base material, the base material is held on the outer peripheral surface of the roller body under suction by a negative pressure developed in suction holes. In an open region of the outer peripheral surface which is not covered with the base material, the sucking of a gas from an exterior space into the roller body is suppressed because it is difficult for the gas to pass through the orifice openings. This suppresses a reduction in sucking force in the closed region due to the entry of the gas from the open region. The roller body, the orifice plate and the side plate rotate as a unit. This suppresses deterioration of the members due to the slidable movement thereof.

A sheet conveying system includes an upstream conveyor section having an endless first conveyor belt movable in a first conveying direction x and extending in a first lateral direction z, the first conveying direction x and the first lateral direction z defining a first conveying plane xz; and a downstream conveyor section having an endless second conveyor belt that adjoins the first conveyor belt and is movable in a second conveying direction x and extends in a second lateral direction z, the second conveying direction x and the second lateral direction z defining a second conveying plane xz. The conveyor sections are adapted to hold the sheets slip-free on the first and second conveyor belts. The second conveyor belt has a shear compliance in the second conveying plane xz that is larger than the shear compliance of the first conveyor belt in the first conveying plane xz.

A rotary drum apparatus comprises a drum that is rotatable about an axis of rotation. The apparatus comprises a first set of first shell segments having a first number of first shell segments. Each first shell segment is releasably connectable with the drum and has an outer surface. The outer surfaces of the first shell segments combine to form a continuous first outer circumferential surface defining a maximum radial distance from the axis of rotation. The apparatus comprises a second set of second shell segments having a second number of second shell segments. Each second shell segment is releasably connectable with the drum and has an outer surface. The outer surfaces of the second shell segments combine to form a continuous second outer circumferential surface located within 10% of the maximum radial distance. The first number of first shell segments is greater than the second number of second shell segments.

Folding machines and methods are provided. A folding machine that utilizes a direct transfer of sheets from a knife roll to a folding roll is provided. Sheet handling rolls are provided that incorporate movable vacuum ports to assist in transfer of a sheet from one roll to another roll.

Device for controlling the separation of the sheets of paper webs rolled in the form of logs, comprising a guide roller (RA) cooperating with further means (R4, R5) for rolling a paper web (2) so as to form a paper log and cooperating with means for providing pre-incision lines on the paper web (2) so as to divide it in multiple separable sheets. The device comprises pneumatic separation means (SP) adapted to direct a fluid jet (J) toward a pre-incision line (p) which separates the last sheet (LS) of a log (RO) in the course of formation from the first sheet (FS) of a subsequent log to be formed. The pneumatic separation means (SP) are inside the guide roller (RA) and the latter has an outer surface (72) with a plurality of through holes (73) allowing the fluid jet (J) produced by the pneumatic separation means (SP) to be directed towards the pre-incision lines (p). The device comprises suction means (200, 201) arranged downstream of the separation means (SP) relative to a direction (K) of rotation of the guide roller (RA). The suction means (200, 201) are inside the guide roller (RA). The suction means (200, 201) provoke a suction through the holes (73).

A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature, wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member.

A device for releasing sections from a material web has a vacuum cutting cylinder and a counter cylinder for cutting the sections. The device also has a vacuum transfer roll for removing the sections from the vacuum cutting cylinder and a conveyor belt, onto which the sections are capable of being deposited from the vacuum transfer roll.

A sheet handling apparatus comprising a rotary drum having an outer peripheral wall with perforations, and a number of separate chambers, a suction system for controlling a flow of air through the perforations, thereby to attract sheets to the peripheral wall of the drum, and a stationary shutter member for blocking the flow of air through the perforations when they pass through a predetermined angular range. The number of separate chambers extend in axial direction and are distributed over the periphery of the drum. A disk-shaped manifold at the first axial end of the drum is co-rotatably with the drum. The manifold forms a number of radial channels each connected to one of said chambers and having an opening at a radially inward end of each channel. The stationary shutter member is arranged for blocking an opening of a channel to block air flow from a radially inward end of a channel.