Self-tightening sleeve holder
AssigneeBarmag Barmer Maschinenfabrik AG
InventorHarald Beeck
Life of this patent
Estimating the term…
Abstract
A self-tightening sleeve holder or chuck assembly designed particularly for high speed textile winding machines wherein the bobbin sleeve is releasably held by two elastomeric gripping rings which are stretched or distended radially outwardly in automatic sequence in response to the coordinated movement of a cooperating push tube and push ring actuated by the bobbin sleeve as it is pushed onto the sleeve holder, the gripping rings being moved from a first small diameter bed to a larger diameter bed to securely lock the bobbin sleeve in place.
Claims13
A self-tightening sleeve holder carried on a machine by a rotary, cantilevered shaft with a machine-side stop means for the sleeve, said holder comprising:
- a tube member axially slidable on said shaft between said stop means and a collar member rigidly fixed to the shaft, a plurality of axially elongated linking members on said tube member extending through a corresponding plurality of axial openings in said collar;
- push means arranged about the shaft in front of the collar and carried on said linking means;
- a first machine-side gripping ring arranged on the circumference of the tube member in a position to be pushed and frictionally engaged by the sleeve, during slipping of the sleeve onto said tube member, from a small diameter bed over a roll surface which mounts in the push direction into a larger diameter bed where said first ring tightly secures the sleeve to the tube member;
- and
- a second gripping ring arranged on the circumference of the collar member in a position to be moved by said push means and placed in frictional contact with said sleeve, said movement taking place from a small diameter bed over a roll surface which mounts in the push direction into a larger diameter bed where said second ring also tightly secures the sleeve to the tube member.
In a textile machine having a self-tightening sleeve holder for releasably mounting a bobbin sleeve on a rotatable, elongated, cantilever supported shaft having stop means for the sleeve at an inboard receiving end, the improvement in said holder comprising:
- a tube member adapted to fit loosely within the sleeve to be mounted thereon, said tube member being axially slidable on said shaft with an accumulator means operatively connecting the inner end of the tube member with said stop means and acting to store energy when pushing the tube member axially toward the stop means during mounting of the sleeve;
- a first elastomeric gripping ring positioned toward the inner end of the tube member and axially shiftable along the circumferential surface of the tube member by frictional engagement with the inner surface of the sleeve from a first circumferentially grooved bed of a diameter sufficient to place the ring in the path of the sleeve, over a first roll surface which increases in diameter in the push direction during mounting of the sleeve and into a second circumferentially grooved bed of larger diameter than said first bed where the inner surface of the sleeve is securely held by said gripping ring;
- a collar member rigidly fixed to said shaft toward the outer end of said tube member and having a plurality of axial openings passing therethrough;
- a second elastomeric gripping ring positioned on the collar member and axially shiftable along the circumferential surface of the collar member from a first circumferentially grooved bed of a diameter small enough to retain the gripping ring inside the path of the sleeve, over a second roll surface which increases in diameter in the push direction during mounting of the sleeve so as to expand said gripping for frictional engagement with said sleeve and into a second circumferentially grooved bed of larger diameter than said first bed where the inner surface of the sleeve is also securely held by said second gripping ring;
- push means arranged about the shaft toward its outer end in a radially extended position to push said second gripping ring axially from its first bed on said collar into engagement with said sleeve during mounting of the sleeve;
- and
- a plurality of axially extending fingers on said tube member arranged to pass slidingly through the corresponding plurality of axial openings in said collar for linkage with said push means, thereby causing said push means to act on said second gripping ring as the sleeve engages the first gripping ring and moves the tube member linked with said push means axially inwardly against the action of said accumulator means.
Dependencies are inferred from the claim text.