Process and apparatus for reducing the breakdown quota or rate of stopping devices in a spinning or twisting machine
AssigneeZinser Textilmaschinen GmbH
InventorWerner Meissner
Life of this patent
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Abstract
The process and apparatus of our invention reduces the breakdown quota of stopping devices in a spinning or twisting machine which stop the roving, e.g. when a roving break occurs. A simulated signal for "Yarn Running" is conductable to a stopping device for test purposes and/or the yarn break sensing device can be disconnected from the stopping device and from time to time a connecting signal is produced which reconnects the yarn break device to the associated stop device.
Claims21
In a process for reducing the breakdown rate of a plurality of stopping devices which are located at a plurality of work stations of a set of drafting rolls or supply rolls of a spinning or twisting machine and which have a plurality of yarn-break sensing devices which can activate said stopping devices, the improvement wherein a simulated signal "yarn running" and/or "yarn break present" is conducted to said yarn-break sensing devices and/or said stopping devices for testing of operation to ascertain at which of said work stations said yarn-break sensing device or said stopping device is not functioning or functioning incorrectly and to overcome any malfunction in said yarn-break sensing device or said stopping device which is not functioning and/or functioning incorrectly.
The improvement according to claim 3 wherein for testing the operability of said yarn-break sensing devices and/or said stopping devices the current supply for said stopping devices is disconnected;
- a yarn break is produced at said work stations or a state is produced which simulates said yarn break for said yarn-break sensing devices, said simulated signals "yarn running" being conducted to said yarn-break sensing devices or said presence of said yarn being simulated in other ways which connect said current supply to said stopping devices and then said stopping devices which are activated are detected and for further testing said simulated signals "yarn running" are ended and/or said simulated signal "yarn break present" is fed to said yarn-break sensing device and then said stopping devices which are not activated are detected.
In a process for reducing the breakdown rate of a plurality of stopping devices which are located at a plurality of work stations of a set of drafting rolls or supply rolls of a spinning or twisting machine and which have a plurality of yarn-break sensing devices which can activate said stopping devices, the electrical connection of each of said yarn-break sensing devices with the associated one of said stopping devices being interrupted automatically as a result of a yarn break, the improvement wherein from time to time a connecting signal is produced by which said electrical connection which was interrupted is again made by said yarn break sensor with yarn running.
In an apparatus for reducing the breakdown rate of a plurality of stopping devices which are located at a plurality of work stations of a set of drafting rolls or supply rolls of a spinning or twisting machine provided with said stopping devices which are each associated with a yarn-break sensing device which can activate said stopping device, the improvement comprising a central signal generator for making a simulated signal "yarn running" and/or "yarn break present" associated with said stopping device of said spinning or twisting machine and/or said yarn-break sensing device and/or one of said signal generators associated with said yarn-break sensing devices for producing a connecting signal which reconnects said yarn-break sensing devices with said stopping devices.
A process for reducing the breakdown rate of a plurality of stopping devices which are located at a plurality of work stations of a set of drafting rolls or supply rolls of a spinning or twisting machine and which have a plurality of yarn-break sensing devices which can activate said stopping devices comprising:
- (a) disconnecting said stopping devices from a supply of electric current;
- (b) conducting a simulated signal "yarn running" and/or "yarn break present" to said yarn-break sensing device or simulating the presence of running yarn in some other way which connects said supply of said electric current to said stopping devices;
- (c) ascertaining which of said stopping devices are activated in step b ;
- (d) replacing and/or correcting the malfunction in said stopping devices which are activated in step b ;
- (e) ending said simulated signal "yarn running" or said simulating of said running yarn;
- (f) conducting a simulated signal "yarn break present" to said yarn-break sensing devices;
- (g) ascertaining which of said stopping devices is not activated in step f;
- and
- (h) replacing or correcting said malfunction in said stopping devices which are not activated in step f.
An apparatus for reducing the breakdown rate of a plurality of stopping devices which are located at a plurality of work stations of a set of drafting rolls or supply rolls of a spinning or twisting machine provided with said stopping devices which are each associated with a yarn-break sensing device which can activate said stopping device comprising:
- a central signal generator for making a simulated signal "yarn running" and/or "yarn break present" associated with said stopping device of said spinning or twisting machine and/or said yarn-break sensing device and/or one of said signal generators associated with said yarn-break sensing device for producing a connecting signal which acts to reconnect said yarn-break sensing device to said stopping devices after disconnection which also produces a simulated signal "yarn running" and/or "yarn break present", said connecting signal and said simulated signal"yarn running" and/or said connecting signal and said simulated signal "yarn break present" being diverted from a single signal supplied by said signal generator to a common main;
- a timed switch device associated with said signal generator for cyclically producing said connecting signal;
- and
- switch means connected with said signal generator for disengaging at least one of said connecting signals at the end of an action taken to eliminate a yarn break at one of said work stations, when elimination of said yarn break is not successful at said work station, said connecting signal being conductable at least to one of said yarn-break sensing devices.
Dependencies are inferred from the claim text.