Tube-sensing device for doffing and donning apparatus
AssigneeZinser Textilmaschinen GmbH
InventorsFranz J. Wiese, Martin Maeser
Life of this patent
Estimating the term…
Abstract
A doffing apparatus for removing a row of yarn tubes from a row of upright spindles has a support and a row of grabs mounted on the support, each engageable with a respective tube of a respective spindle, and movable for lifting the tubes off the spindles. Respective sensors at the grabs detect the presence of tubes in the respective stations and generate individual outputs respectively corresponding to the absence of tubes in the respective stations. A controller connected to all the sensors receives the outputs therefrom and stops the apparatus on detection of no tube in any of the stations.
Claims9
In a doffing apparatus for removing a row of yarn tubes from a row of upright spindles, the apparatus comprising:
- a support;
- a row of grabs mounted on the support, each engageable with a respective tube of a respective spindle, and movable for lifting the tubes off the spindles, each grab including
- an abutment element,
- a pusher element displaceable toward and away from the abutment element, and
- means including an actuator for pushing the pusher element toward the abutment element and clamping the respective tube between the elements;
- and
- control means including respective switches each connected directly to one of the elements of the respective grab and directly operable by movement of the respective one element for detecting the presence of tubes in the respective grabs and for generating individual outputs respectively corresponding to the absence of tubes in the respective grabs.
In a doffing apparatus for removing a row of yarn tubes from a row of upright spindles, the apparatus comprising:
- a support;
- a row of grabs mounted on the support, each engageable with a respective tube of a respective spindle, movable for lifting the tubes off the spindles, and each including;
- an abutment element,
- a pusher element displaceable toward and away from the abutment element, and
- an actuator for pushing the pusher element toward the abutment element and clamping the respective tube between the element;
- means including respective switches at the grabs directly engaging and operable only by movement of one of the elements thereof for detecting the presence of tubes in the respective grabs and for generating individual outputs respectively corresponding to the absence of tubes in the respective grabs;
- and
- control means connected to all the sensors for receiving the outputs therefrom and stopping the apparatus on detection of no tube in any of the stations.
In a doffing apparatus for removing a row of yarn tubes from a row of upright spindles, the apparatus comprising:
- a support;
- a row of grabs mounted on the support, each engageable with a respective tube of a respective spindle, and movable for lifting the tubes off the spindles, each grab including
- an abutment element,
- a pusher element displaceable toward and away from the abutment element, and
- means including an actuator for pushing the pusher element toward the abutment element and clamping the respective tube between the elements;
- and
- control means including respective normally open switches each connected directly to one of the elements of the respective grab and directly operable by movement of the respective one element for detecting the presence of tubes in the respective grabs and for generating individual outputs respectively corresponding to the absence of tubes in the respective grabs.
Dependencies are inferred from the claim text.