Title:
SHEET WINDING SHAFT
Document Type and Number:
Japanese Patent JPH1159981
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sheet winding shaft to which a core of the narrow width can be attached, that the core is properly supported to a winding part during winding and the core is released from the winding shaft at the end of winding, that a sheet is wound around each of the cores with a predetermined winding tension, that attachment and removal of the core to and from the sheet winding shaft is made easy and that the sheet is wound with a proper winding tension. SOLUTION: In a winding part 3, a collar 6 is provided rotatably at a shaft core 2, and a piston member 19 is provided movably inserted through a vertical hole 17 facing the inner circumferential face of the collar 6 communicating to a ventilation passage 18 along the shaft core 2 at plural points of a fixed annular body 4. And the piston member 19 is protruded by air pressure applied from the ventilating passage 18 to be locked with the collar 6 capable of sliding contact.
Inventors:
TABUCHI AYAAKI
KANEMITSU TOSHIFUMI
KANEMITSU TOSHIFUMI
Application Number:
JP21951497A
Publication Date:
March 02, 1999
Filing Date:
August 14, 1997
Export Citation:
Assignee:
HAGIWARA KOGYO KK
International Classes:
B65H18/04; B65H18/10; (IPC1-7): B65H18/04; B65H18/10
Attorney, Agent or Firm:
Akimoto Teruo