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US 4,784,343 AGranted
Actuating system for a bobbin tube gripper
AssigneeRieter Machine Works, Ltd.
InventorsHeinz Mutter, Ruedi Schneeberger, Erwin Holbein
Life of this patent
Estimating the term…
Abstract
An actuating system for a bobbin tube gripper comprises resilient structure held in compression in order to create a force for urging tube gripping elements into engagement with a tube to be gripped. The resilient structure constitutes a body of a porous elastomer.
Claims13
An actuating system operating on bobbin tube gripping elements of a bobbin tube gripping device and comprising:
- resilient means capable of assuming predeterminate states of compression,
- means defining a confinement compartment bounded by an internal surface;
- said resilient means contacting said internal surface of said confinement compartment;
- said means defining said confinement compartment further including a movable member for holding said resilient means in at least one preselectable state of compression in which said resilient means generate a force operable to grippingly engage the bobbin tube gripping elements with the bobbin tube;
- said resilient means constituting a body of porous elastomer enabling generation of said at least one preselectable state of compression with said resilient means in contact with said internal surface of said confinement compartment;
- and
- said body of porous elastomer of said resilient means substantially filling said confinement compartment when generating said force to gripping engage the bobbin tube gripping elements with the bobbin tube.
4 more elements
A chuck structure for use in a winding machine and having an axis of rotation, said chuck structure comprising:
- a first elongated tubular portion with an external circumference adapted to receive at least one bobbin tube for rotation about the axis of rotation;
- a second elongated tubular portion extending substantially coaxially in said first elongated tubular portion;
- resilient means constituting a body of porous elastomer;
- said first elongated tubular portion and said second elongated tubular portion conjointly defining a chamber accommodating said body of porous elastomer and bounded by a stationary member at which said body of porous elastomer is supported, and a displaceable substantially rigid element;
- said first elongated tubular portion, said second elongated tubular portion, said stationary member and said displaceable substantially rigid element defining a confinement compartment within which there is located said body of porous elastomer;
- said confinement compartment including an internal surface against which contactingly bears said resilient means;
- displacement means acting upon said displaceable substantially rigid element in order to thereby subject said body of porous elastomer to preselectable states of compression;
- a predetermined number or bobbin tube gripping elements operatively associated with said at least one bobbin tube and extending through a predetermined number of openings in said first elongated tubular portion;
- said predetermined number of bobbin tube gripping elements engaging said displaceable substantially rigid element and cooperating with said bobbin tube during displacement of said substantially rigid element such that, in a first state of compression of said body of porous elastomer under the action of said displaceable substantially rigid element, said predetermined number of bobbin tube gripping elements are held in gripping engagement with said at least one bobbin tube under a predeterminate force generated by said body of porous elastomer in said first state of compression, and in a second state of compression of said body of porous elastomer under the action of said displaceable substantially rigid element, said body of porous elastomer permits release of said bobbin tube from said predetermined number of bobbin tube gripping elements;
- said body of porous elastomer due to its porosity enabling assumption of the first state of compression and the second state of compression of said body of porous elastomer even through the resilient means contacts the internal surface of the confinement compartment;
- and
- said body of porous elastomer substantially filling the confinement compartment when said body of porous elastomer is in said first state of compression so as to generate said predeterminate force for holding said predetermined member of bobbin tube gripping elements in gripping engagement with said at least one bobbin tube.
9 more elements
Dependencies are inferred from the claim text.