Reeled web unwind stand

Winding – tensioning – or guiding – Coil holder or support – Spool or core

Patent

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Details

83171, B65H 1918

Patent

active

041380738

ABSTRACT:
A continuous web converting machine is supplied with web material from a spider wheel unwind stand having a shiftable wheel axis. Movement of the spider wheel axis is regulated by a double acting fluid cylinder for controlled force application of the working web supply reel against a closed circuit pulling belt. Depletion of the working reel is detected by a limit switch actuated by contact with the shift carriage. upon working reel depletion, the pressure bias on the fluid cylinder is reversed and the shift carriage retracted to free the working reel from contact with the pulling belt. Thereafter, the spider wheel is rotatively indexed 120.degree. to align a full reel in the working position. Said full reel is prepared with a strip of double faced adhesive tape secured across the full reel web leading edge to facilitate web continuity and splice from a depleted reel to a full one. Return of the shift carrier presses the taped leading edge of the full reel into the remaining tail of the depleted reel against the pulling belt with a controlled pressure. A directed air stream into the remaining tail web between the pulling belt nip and the depleted reel core billows the web against an electric resistance heated ni-chrome wire to sever such remaining tail.

REFERENCES:
patent: 1878184 (1932-09-01), Roesen
patent: 2320658 (1943-06-01), Roesen
patent: 2783000 (1957-02-01), Huecking et al.
patent: 3091411 (1963-05-01), Hearns
patent: 3131278 (1964-04-01), Rosenthal
patent: 3134005 (1964-05-01), Mayhew
patent: 3299756 (1967-01-01), Rosenthal
patent: 3876324 (1975-04-01), Ballard

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