摘要:
A method for operating a spinning device of a rotor spinning machine, and associated rotor spinning machine are provided in which a spinning rotor includes a rotor cup and a rotor shaft that is set into rotation with the aid of a drive situated in a drive housing. The drive is operatively connected to the rotor shaft, and the rotor shaft is supported in the drive housing by a bearing. The rotor cup is situated in a rotor housing to which vacuum is applied, and the rotor shaft extends between the drive housing and the rotor housing through a connection opening such that when a vacuum is drawn in the rotor housing during a spinning process, a vacuum is also drawn in the drive housing. Compressed air is feed into the drive housing via an air inlet at intervals to clean one or both of the drive housing and the bearing.
摘要:
A method for operating a spinning device of a rotor spinning machine, and associated rotor spinning machine are provided in which a spinning rotor includes a rotor cup and a rotor shaft that is set into rotation with the aid of a drive situated in a drive housing. The drive is operatively connected to the rotor shaft, and the rotor shaft is supported in the drive housing by a bearing. The rotor cup is situated in a rotor housing to which vacuum is applied, and the rotor shaft extends between the drive housing and the rotor housing through a connection opening such that when a vacuum is drawn in the rotor housing during a spinning process, a vacuum is also drawn in the drive housing. Compressed air is feed into the drive housing via an air inlet at intervals to clean one or both of the drive housing and the bearing.
摘要:
A dust prevention mechanism of a spindle device that ensures prevention of cutting liquid etc. from entering an inner portion of the spindle device, which saves energy and reduces noise upon stop of rotation of a spindle is provided. In a dust prevention mechanism 1, a spindle device 2 starts operating upon a command from a controller 4. Then, a 2-port solenoid valve 7 is opened to supply a predetermined amount of compressed air into the inner portion of the spindle device 2. In contrast, the spindle stops rotating upon a command from the controller 4. The controller 4 closes the 2-port solenoid valve 7, while it opens a 2-port solenoid valve 10 in a bypass route B. The controller 4 supplies compressed air, whose amount is reduced by a diaphragm 9, into the inner portion of the spindle device 2 during a predetermined time set by a timer 8.
摘要:
The yarn cleaner (5) is designed for cleaning out defects from an effect yarn (1), which is formed from an alternating stringing together of webs and of effects comprised of given thickenings. The yarn cleaner has a measuring head (6) in which at least one yarn parameter is measured, whereby cleaning limits are determined for the yarn parameter, and the presence of a defect in the yarn is signaled when these limits are surpassed. The measured values of the yarn parameter are compared with the cleaning limits and intolerable defects are cut out from the yarn. The cleaning limits are each dependent on whether the values are measured in the web or in the effect. The yarn cleaner (5) is suited for keeping the desired diameter quality of effect yarn on winding and spinning winding machines.
摘要:
A weaving machine for the manufacture of leno cloths includes a leno apparatus with leno elements (5, 5′, 7, 7′, 8, 8′) for the forming of a shed (6) as well as additionally a cleaning apparatus with a plurality of nozzles (10.1, 10.2, 11, 13) for the removal of contaminations in the region of the leno apparatus and of the shed (6). Two of the nozzles (10.1, 10.2) are arranged above the shed, by means of which a compressed air flow (16.1–16.4) which is directed downwardly through the shed (6) from above is produced, and one of the nozzles (11) is arranged in the lower region of the leno elements, by means of which a compressed air flow (17) which is directed substantially horizontally towards the leno elements (5, 5′, 7, 7′, 8, 8′) is produced. In addition, a suction nozzle (13) by means of which a downwardly directed suction air flow (19) is produced is arranged beneath the shed.
摘要:
The invention relates to a splice between two ends of yarn, the ends of yarn, positioned to point at each other without increase in diameter, each being joined over a length of yarn to at least one longitudinal strip. The longitudinal strip is provided on its side facing the ends of yarn with a joining agent, said joining agent permanently binding the ends of yarn over the respective length of yarn to the longitudinal strip in frictional non-positive manner.
摘要:
To provide a threading apparatus that can thread yarn by feeding compressed air when the yearn is fed from a large diameter portion of a spindle member to a small diameter portion of the spindle member preceding the large diameter one. A spindle member is divided and a pipe including of a filter member is installed in the middle of the spindle, so that when compressed air is injected from the rear end of the spindle member having a large diameter toward its tip having a small diameter and preceding the rear end, a suction flow that sucks external air at the rear end is generated while excessive air is discharged to the exterior through the filter member, thereby maintaining a yarn feeding air flow in the center of the spindle member. Thus, the present invention can provide a threading apparatus that can feed compressed air to thread yarn from the rear end having a large diameter toward the preceding small diameter portion.
摘要:
For the optimization of the vacuum output of a suction air installation of a textile machine, the vacuum output is adjustably regulated by initially starting a batch with a predetermined vacuum for the vacuum demands under basic operating conditions and additional fluctuating working conditions, counting the errors which cannot be rectified and the attempts to rectify the errors caused by insufficient vacuum during a predetermined time period, subsequently changing the vacuum output of the suction unit during a subsequent time period, comparing the number of errors occurring under the changed vacuum conditions with the number which had occurred in the previous time period, and increasing the vacuum output when the number of errors exceeds a maximum predetermined amount of errors and decreasing the vacuum output when the number of errors is at or less than the maximum predetermined amount of errors.
摘要:
A method of reducing trash recirculation into the fiber formation stream of an open-end spinning machine yarn formation station in an open-end spinning machine of the type having a movable trash belt which collects trash removed from sliver during yarn formation, the spinning machine having a predetermined, relatively high, conventional trash belt speed "X", and a predetermined optimum trash brush rotational speed "Y". The method includes the steps of moving the trash belt at a low speed "Z" determined by the type of trash contained in the fiber, the type of yarn being spun and the type of fabric to be formed from the yarn, but in no event more than 50 percent of the conventional trash belt speed "X", and rotating the trash brush at optimum speed "Y" without regard to the speed "Z" of the trash belt.