A winding condition generating apparatus includes: an input unit; an output unit; and a condition calculation unit. A winding condition calculation unit includes a learning model created by machine learning using a combination of a winding parameter and a winding condition in producing a wound web that satisfies a target winding quality as training data, and calculates a winding condition of a new wound web using the learning model, from a winding parameter of a new wound web input through the input unit. The output unit outputs the winding condition. The winding parameter includes a web width, a web transport velocity, and a web winding length. The winding condition includes a tension of the web at the start of winding and a tension of the web at the end of winding.

A web winding process is disclosed for controlling one or more characteristics of a web of material being wound into a roll. In one aspect, the system includes a weighing platform that weighs the roll of material as the roll of material is building. From this information, a basis weight characteristic of the web is determined. One or more parameters in the web making process can be controlled in order to ensure that the basis weight characteristic of the web of material stays within preset limits. In this manner, rolls of material can be produced having uniform characteristics and dimensional stability.

A web winding process is disclosed for controlling one or more characteristics of a web of material being wound into a roll. In one aspect, the system includes a weighing platform that weighs the roll of material as the roll of material is building. From this information, a basis weight characteristic of the web is determined. One or more parameters in the web making process can be controlled in order to ensure that the basis weight characteristic of the web of material stays within preset limits. In this manner, rolls of material can be produced having uniform characteristics and dimensional stability.

It is described a winding apparatus for wrapping a material around a core of flat shape that rotates around a rotation axis rotating in its turn with a circular trajectory, controlling the laws of motion both of the core rotation around its axis and of the circular trajectory of its rotation axis, motor driven independently by means of electric cams, such as to cancel the variations of position and speed of the material at the entrance of the core The winding apparatus is used for producing electric energy accumulating devices.

It is described a winding apparatus for wrapping a material around a core of flat shape that rotates around a rotation axis rotating in its turn with a circular trajectory, controlling the laws of motion both of the core rotation around its axis and of the circular trajectory of its rotation axis, motor driven independently by means of electric cams, such as to cancel the variations of position and speed of the material at the entrance of the core The winding apparatus is used for producing electric energy accumulating devices.

The present invention relates to a device (20) for winding a longitudinally cut material web having multiple longitudinal strips (12) on a plurality of winding tubes (16) to form in each case a wound roll. The device comprises an axle (24) and, mounted on the axle, a plurality of ring-shaped winding drives (22) that are individually controllable in their operating position. Each winding drive (22) forms an external-rotor electric motor and comprises a static interior tube (40) and a rotatable external tube (50). The external tube (50) that is rotatable on the rolling bearings (48) bears, on its interior, a device for providing an excitation magnetic field (52) that forms the external rotor of the electric motor.

A dunnage conversion system for making a coil of dunnage from a sheet stock includes a coiler, a movable dancer upstream of the coiler and interposed in a path of the sheet stock, and a controller communicatively coupled to each of the coiler and the movable dancer. The coiler is configured to wind the sheet stock, and the controller is configured to control the speed of the coiler based on the position of the movable dancer to control tension of the sheet stock upstream of the coiler. The sheet stock drawn about the movable dancer may be a slit-sheet stock having a plurality of slits configured to expand under tension applied in a feed direction. The controller may be configured to control expansion of the slit-sheet stock upstream of the coiler allowing conversion of the sheet stock into a coil of relatively less dense dunnage prior to or during winding.

A dunnage conversion system for making a coil of dunnage from a sheet stock includes a coiler, a movable dancer upstream of the coiler and interposed in a path of the sheet stock, and a controller communicatively coupled to each of the coiler and the movable dancer. The coiler is configured to wind the sheet stock, and the controller is configured to control the speed of the coiler based on the position of the movable dancer to control tension of the sheet stock upstream of the coiler. The sheet stock drawn about the movable dancer may be a slit-sheet stock having a plurality of slits configured to expand under tension applied in a feed direction. The controller may be configured to control expansion of the slit-sheet stock upstream of the coiler allowing conversion of the sheet stock into a coil of relatively less dense dunnage prior to or during winding.

A transport device provided in a printing apparatus includes a transport mechanism as an example of a first transport unit and a winding unit that is disposed on a downstream side of the transport mechanism in a transport direction. The transport device includes a tensile force applying unit that has a tension bar as an example of a tensile force applying member that is biased toward a medium between the transport mechanism and the winding unit and applies tensile force to the medium. Furthermore, the transport device includes a control unit that independently and intermittently drives the transport mechanism and the winding unit. The control unit controls transport start timing of the winding unit to take place later than transport start timing of the transport mechanism and causes the transport mechanism and the winding unit to transport the medium in parallel.

A transport device provided in a printing apparatus includes a transport mechanism as an example of a first transport unit and a winding unit that is disposed on a downstream side of the transport mechanism in a transport direction. The transport device includes a tensile force applying unit that has a tension bar as an example of a tensile force applying member that is biased toward a medium between the transport mechanism and the winding unit and applies tensile force to the medium. Furthermore, the transport device includes a control unit that independently and intermittently drives the transport mechanism and the winding unit. The control unit controls transport start timing of the winding unit to take place later than transport start timing of the transport mechanism and causes the transport mechanism and the winding unit to transport the medium in parallel.