Reel spool pneumatic core clamp

Details Reel spool pneumatic core clamp Reel spool pneumatic core clamp

1980-11-06

1982-04-20

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

403259, B65H 1702

Patent

active

043255183

ABSTRACT:
A core clamp mechanism serves to grip a core on a winder shaft by means of a plurality of ring elements and an expandable elastomer tube. A spacer sleeve abuts at one end with the free end of the core and receives, at its other end, a locking disc in preformed engagement spaces which cooperate with lugs formed on the disc. The elastomer tube is positioned upstream of the disc and supplied with air pressure for expansion of the tube against the disc which serves to compress the sleeve against the core. Shrinkage and other adjustments during the clamping operation are automatically accommodated by axial expansion of the tube under pressure. To remove a wound core, pressure is released through a valve from the tube and the disc moved clear from engagement with the sleeve. Cutouts corresponding to the disc lugs are formed on the sleeve so that, by aligning the cutouts with the disc lugs, the sleeve can be pulled off the shaft and the core removed and replaced.

REFERENCES:
patent: 1961376 (1934-06-01), McIlvried
patent: 2622814 (1952-12-01), Benke
patent: 3276713 (1966-10-01), Erbach
patent: 3703996 (1972-11-01), Ulseth
patent: 3953141 (1976-04-01), Koch

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