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AssigneeZinser Textilmaschinen GmbH
InventorsHelmut Nickolay, Wolfgang Igel, Werner Meissner, Richard Schollhammer
Estimating the term…
Controlling the stop of the feed of roving in a spinning machine in which yarn is wound on spindles through travelers rotating on rings and in which a stop motion is actuated to stop the feed of the roving to drafting rolls in response to detecting a yarn break and is subsequently deactuated to permit roving feed during a yarn break repair operation. The stop motion includes an arcuate stop member rotatably mounted on one of the drafting rolls for rotation into disposition between opposing rolls to separate the rolls and stop roving feed, with the stop member having a projecting cam engaging in a recess in a slide member that is manipulated by a spring and electromagnetic device to control manipulation of the stop member. Response of the stop motion to the detection of a yarn break is deactivated upon initiation of a yarn break repair operation and is maintained until the detection indicates that spinning has resumed for a predetermined length of time sufficient to indicate that the yarn break has been repaired, with the deactivating continuing in the event a yarn break has not been successfully repaired. The repair operation is repeated until successful or for a selected number of unsuccessful attempts, at which time a false simulation of resumption of spinning is given to reactivate response of the stop motion to the yarn break detection for deactuating the stop motion and to stop roving feed. Device for sensing whether a yarn break has been successfully repaired and the device for providing a false simulation are incorporated in an electronic circuit on the yarn break repair device, which circuit is connected through an optical transmission device to an electronic circuit on the spinning machine that includes the stop motion deactivating device.
A method of controlling the stop of the feed of roving in a spinning machine in which a stop motion means is actuated to stop the feed of roving to drafting rolls in response to detecting means detecting a yarn break and is subsequently deactuated to permit roving feed during operation of yarn break repair means, said method comprising, following said detecting means detecting a yarn break and actuating said stop motion means for stopping roving feed, deactivating the response of said stop motion means to said yarn break detecting means to thereby deactuate said stop motion means permitting roving feed to resume in advance of yarn break repair, then operating said yarn break repair means to perform a yarn break repair operation while said stop motion means is deactuated, maintaining said deactivating until said detecting means has detected that spinning has been resumed for a predetermined length of time sufficient to indicate that the yarn break has been repaired, with the deactivating continuing uninterrupted in the event a yarn break has not been successfully repaired.
Means for controlling the stop of the feed of roving in a spinning machine wherein the machine includes stop motion means actuatable to stop the feed of roving to drafting rolls in response to detecting means detecting a yarn break and deactuatable to permit roving feed during operation of yarn break repair means, said controlling means comprising means for deactivating the response of said stop motion means to said yarn break detecting means following deactuation by said detecting means of a yarn break and actuation of said stop motion means by said detecting means to thereby deactuate said stop motion means to permit roving feed to resume during operation of said yarn break repair means, said deactivating means maintaining deactuation of said stop motions means until said detecting means has detected that spinning has been resumed for a predetermined length of time sufficient to indicate that the yarn break has been successfully repaired, with said deactivating means continuing the deactivation of said stop motion means uninterrupted in the event a yarn break has not been successfully repaired.
Dependencies are inferred from the claim text.