A welding device includes a thin film and an ultrasonic welding machine including an ultrasonic welding head welding a first component and a second component of a product together. The thin film is pressed against the product by the ultrasonic welding head and covers a welding area and a non-welding area of the product. The thin film absorbs a vibration energy located in the non-welding area to prevent the vibration energy from being concentrated in the welding area of the product.

A secondary battery manufacturing apparatus includes at least one roller configured to convey a sheet, at least one sensor configured to measure a tension of the sheet, and a driver configured to control operation of the at least one roller, based on the tension measured by the at least one sensor.

A secondary battery manufacturing apparatus includes at least one roller configured to convey a sheet, at least one sensor configured to measure a tension of the sheet, and a driver configured to control operation of the at least one roller, based on the tension measured by the at least one sensor.

A tape feeder of feeds a component supply tape to a predetermined supply position and peels off a cover tape from the carrier tape at the supply position to expose a component. The tape feeder includes a pair of feed gears configured to mesh with each other and sandwich the cover tape, a drive motor configured to rotationally drive the pair of feed gears such that the carrier tape is pulled in, a rotation gear directly or indirectly meshed with a first feed gear of the feed gears, a one-way clutch provided in the rotation gear such that the rotation gear idles with respect to rotation of the pair of feed gears in a direction in which the carrier tape is pulled in, and a torque limiter provided in the rotation gear or another rotation gear meshing with the rotation gear.

A coating system for coating a web of paper includes spaced apart support rollers, a guide roller, a tension roller, a motor, a dispenser, and a control system. The support rollers support respective spools of paper. The guide roller is configured for guiding the paper along a path between the spools of paper. The tension roller is positioned along the path and is configured to engage the paper. The motor is operable to rotate the support rollers and/or the tension roller. The dispenser is fixed proximal to the path and is operable to guide liquid coating onto the paper located on the path. The control system is in communication with the motor and is configured to direct the motor to cause the paper to shift in either direction along the path between the spools.

A manufacturing apparatus for an electrode plate includes: a conveyance line of the electrode plate having an applied portion in which an electrode active material is applied to a surface of a base material and a non-applied portion in which the electrode active material is not applied to the surface of the base material; a compression roll provided in the conveyance line and compressing the applied portion; and a tension reducing mechanism provided in at least one of an upstream section ending at the compression roll or a downstream section starting at the compression roll in the conveyance line and reducing a tension applied to the electrode plate.

A manufacturing apparatus for an electrode plate includes: a conveyance line of the electrode plate having an applied portion in which an electrode active material is applied to a surface of a base material and a non-applied portion in which the electrode active material is not applied to the surface of the base material; a compression roll provided in the conveyance line and compressing the applied portion; and a tension reducing mechanism provided in at least one of an upstream section ending at the compression roll or a downstream section starting at the compression roll in the conveyance line and reducing a tension applied to the electrode plate.

Various embodiments of the teachings herein include a device for controlling a machine for winding a material onto a target, the machine including a storage for the material and a buffer system for buffering the winding material between the storage device and the target. An example includes: a communication port to receive a number of status signals, each of the status signals including a certain indication for a current process status of a material flow of the material; a processor using a neural network to provide a number of output signals to control the storage and/or the buffer system using the received status signals as input; and a controller to control the storage and/or the buffer system using the provided output signals.

Provided is a magnetic tape apparatus in which the magnetic tape is run between a winding reel and a cartridge reel in a state where a tension is applied in a longitudinal direction, a maximum value of the tension is 0.50 N or more, the magnetic tape after being run in a state where the tension is applied is wound around the cartridge reel with a tension of 0.30 N or less applied in the longitudinal direction, and the number of recesses existing on a surface of the magnetic layer of the magnetic tape and having an equivalent circle diameter of 0.10 m or more and less than 0.20 m is 100 or more and 2000 or less per an area of 40 m40 m.

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.