A packaging apparatus includes a controller configured to control operation of a first conveyance unit, a second conveyance unit, a first moving unit, a second moving unit, and a cutting unit. The controller, after causing the cutting unit to cut a film, causes at least either one of a first clamp unit and a second clamp unit to clamp the cut film and controls operation of at least either one of the first moving unit and the second moving unit so that the distance between the first conveyance unit and the second conveyance unit in a second direction changes.

A packaging apparatus includes a controller configured to control operation of a first conveying unit, a second conveying unit, a first moving unit, and a second moving unit. When a film is loaded onto the first conveying unit and the second conveying unit, the controller causes a first clamp unit to clamp the film delivered from a delivering unit and causes a first feeder portion to convey the film. Simultaneously, while causing a second clamp unit to be released or the second clamp unit to intermittently clamp the film delivered from the delivering unit, the controller causes a second feeder portion to convey the film and also causes the second conveying unit to move in a direction separating from the first conveying unit and, when the second conveying unit reaches a predetermined position, causes the second clamp unit to clamp the film.

A printer includes a first housing part, a second housing part, a printing part that prints on the first paper sheet and the second paper sheet, a conveying part that includes a holding part that is configured to hold the overlapping first paper sheet and the second paper sheet respectively pulled out from a first paper roll and a second paper roll, and conveys the first paper sheet out of the first paper sheet and the second paper sheet held by the holding part to the printing part, a first paper sheet sensor that detects the presence of the first paper sheet, and a controlling part that makes the conveying part convey the second paper sheet held by the holding part to the printing part when the first paper sheet sensor detects that there is no first paper sheet to be conveyed to the printing part.

A paper winder includes a first winding core that is provided in a first arm turning centering on a rotating shaft and on which the paper should be wound, a first motor that drives the first winding core, a second winding core that is provided in a second arm turning centering on the rotating shaft and on which the paper should be wound next to the first winding core, and a controller that performs rotation control for the first motor and a second motor. In the rotation control, after, according to the turning of the second arm, completion of the winding of the paper by the first winding core and after a position of the second winding core has reached a position where the paper should be wound, during an operation of a traverse cutter that cuts the paper near the second winding core, when a torque value of the second motor is equal to or larger than a torque reference value, the controller switches a control mode of the second motor from speed control to torque control and perform tension correction control for adjusting the torque value of the second motor such that tension of the paper falls within a target range.

The present application relates to a winding needle assembly, a winding apparatus, a production device, and a method for winding electrode assemblies in the field of battery production. The winding needle assembly includes a support seat and a winding needle rotatably connected to the support seat along the needle's axial direction. The winding needle extends outward from the support seat to form multiple winding portions outside the support seat, each configured to wind electrode assemblies. The assembly enables simultaneous winding of multiple electrode assemblies to increase production efficiency. While winding, the support seat reduces the length of the unsupported portion of the needle, enhancing the rigidity and strength of the winding portion. This structure mitigates deformation of the winding part during the winding process and alleviates issues such as wrinkles, poor alignment, and limited winding speed, thereby improving the quality and efficiency of electrode assembly production.