Expansible mandrel for mounting spools and the like in winding machines
AssigneeFMN Schuster & Co.
InventorPeter Hermanns
Life of this patent
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Abstract
An expansible mandrel is useful for mounting spools and the like in winding machines. The mandrel comprises asecuring elements for locating clamping segments on the periphery of the mandrel. Mutually opposed conical surfaces are movably disposed with respect to each other for causing the clamping elements to exert an outwardly directed radial pressure thereby holding a mounted spool thereon. Each clamping segment is elongated and has a longitudinal axis disposed parallel to the longitudinal axis of the mandrel. A plurality of recesses are distributed symmetrically with respect to the longitudinal center of each segment. The recesses are bores in a specific embodiment of the invention. The clamping segments are also substantially constant in width along the entire length thereof.
Claims16
An expansible mandrel for mounting spools and the like in winding machines, said mandrel comprising:
- a. means for securing clamping elements on the periphery of the mandrel, and
- b. cone means for causing the clamping elements to exert an outwardly directed radial pressure to hold a mounted spool thereon,
- c. each said clamping element comprisng an elongated segment having the longitudinal axis disposed parallel to the longitudinal axis of the mandrel and having lines of momentum arising from the stress while the mandrel is operating at high rotary speeds,
- d. each segment including a plurality of recesses distributed symmetrically with respect to the longitudinal center of the segment,
- e. the size of the recesses being adapted to the approximate changing values of the momentum curve defined by said lines of momentum.
An expansible mandrel for mounting spools and the like in winding machines, said mandrel comprising:
- a. means for securing clamping elements on the periphery of the mandrel, and
- b. cone means for causing the clamping elements to exert an outwardly directed radial pressure to hold a mounted spool thereon,
- c. each said clamping element comprising an elongated segment having the longitudinal axis disposed parallel to the longitudinal axis of the mandrel,
- d. each segment including a plurality of recesses distributed symmetrically with respect to the longitudinally center of the segment.
- e. said securing means includes securing rings to which the segments are connected at laterally disposed attachment points.
- f. said recesses being located between the attachment points.
An expansible mandrel for mounting spools and the like in winding machines, said mandrel comprising:
- a. means for securing clamping elements on the periphery of the mandrel and at laterally disposed attachment points, and
- b. cone means for causing the clamping elements to exert an outwardly directed radial pressure to hold a mounted thereon,
- c. each said clamping element comprising an elongated segment having the longitudinal axis disposed parallel to the longitudinal axis of the mandrel,
- d. each segment including a plurality of bores distributed symmetrically with respect to the longitudinal center of the segment,
- e. said bores beng greatest in their diameter close to the attachment points and reduce in their diameter in the direction toward the longitudinal center of each segment.
Dependencies are inferred from the claim text.