Film winding method, film winding apparatus, and film manufacturing apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorsKenji Watanabe, Akio Hiroi, Fujio Kuwabara
Life of this patent
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Abstract
A winding mechanism for winding a narrower web has a drive shaft with a torque transmitting member fixedly mounted thereon, and a holder rotatably mounted on the drive shaft with a spring disposed around an outer circumferential surface of the holder with cushioning members interposed therebetween. Stoppers are disposed respectively in three chambers defined in the holder. A groove is defined in an inner circumferential surface of a winding core around which the narrower web is wound, and the cushioning members are fitted in the groove. A pressing force of the spring is applied through the stoppers to the winding core which is mounted on the holder.
Claims8
An apparatus for manufacturing a film, comprising:
- a roller for taking up variations of tension of a web and detecting a value of the tension;
- a roller for stretching the web to remove wrinkles therefrom;
- a roller for positioning the center of said web;
- a cutting unit having blades for cutting said web into a plurality of webs;
- and
- a plurality of winding mechanisms for winding the cut webs around respective winding cores;
- each of said winding mechanisms having:
- a holder rotatably mounted on a drive shaft;
- joined members having joining grooves;
- and
- lock means for preventing said winding core from being detached from said holder when the web is wound around the winding core;
- said winding mechanisms being joined together as a joined array by joining members fitted in said joining grooves,
- wherein said lock means comprises:
- stoppers for pressing said winding core outwardly of said holder;
- and
- moving means for moving said stoppers in a direction to increase a pressing force applied to said winding core before said web is wound around said winding core, and moving said stoppers in a direction to reduce the pressing force applied to said winding core when the winding core with the web wound therearound is removed from said holder.
Dependencies are inferred from the claim text.