The present disclosure discloses alloy filament and simple yarn blending equipment and a process, and belongs to the technical field of textiles. The equipment comprises a machine head, a machine body, a machine tail, and a computer control box arranged on one side of the machine head; and an upper roller, a first covering spindle, a second covering spindle, a heat setting box, a lower roller, and a winding device are sequentially arranged in the machine body from top to bottom. The equipment is technically modified through the solution to achieve completion of the procedures such as covering, twisting, spooling and the like of the yarn on one piece of equipment, the yarn is integrally formed, the process is the first in China, and is equivalent to a chip in the spinning industry, the labor as well as time and energy are saved, and economic efficiency is greatly improved.

The present disclosure discloses alloy filament and simple yarn blending equipment and a process, and belongs to the technical field of textiles. The equipment comprises a machine head, a machine body, a machine tail, and a computer control box arranged on one side of the machine head; and an upper roller, a first covering spindle, a second covering spindle, a heat setting box, a lower roller, and a winding device are sequentially arranged in the machine body from top to bottom. The equipment is technically modified through the solution to achieve completion of the procedures such as covering, twisting, spooling and the like of the yarn on one piece of equipment, the yarn is integrally formed, the process is the first in China, and is equivalent to a chip in the spinning industry, the labor as well as time and energy are saved, and economic efficiency is greatly improved.

A method for monitoring air flows required for handling a thread and/or fiber band in a spinning machine, and to a spinning machine unit. At least one air flow-generating source is connected to an air flow duct. An air volume flow measuring unit is connected to an evaluation device for data transmission. The air volume flow is measured by the air volume flow measuring unit and the measurement result is transmitted to the evaluation device. The number of productive and/or non-productive spinning positions is detected. An air volume flow target value is determined by the evaluation device. The air volume flow target value is compared with actual value of the measured air volume flow by the evaluation device, the evaluation device making an evaluation on the basis of the comparison as to whether there is an unacceptable deviation between the actual value and the air volume flow target value.

A method for operating a work station of a textile machine that produces or rewinds yarn in a normal operation, wherein the normal operation is interrupted. The method includes performing at least one service step for restoring the normal operation, wherein a service result is specified for the service step. A standard service operation is carried out with a service device until the service result has been achieved or a predetermined number of failed attempts has been reached. When the predetermined number of failed standard service operation attempts has been reached, an extended service operation is carried out.

The present disclosure provides a ringspinning system for producing a yarn. It is provided a the ringspinning system comprising a bobbin holder for holding a bobbin from which a first filament is supplied, a drafting stage for drafting the first filament together with a second filament, which is fed to the drafting stage, and a spindle, the ringspinning system further contains at least one sensor for detecting a breakage of the first and/or second filament and/or a roving comprising the first and second filament, which roving comes out of the drafting stage, and a clamp assembly comprising a clamp for fixing the second filament in the case that the sensor detects the breakage, wherein the clamp is provided adjacent the bobbin holder. It is further provided a method for stopping the supply of filaments to a drafting stage of a ring spinning system.

A method is provided for contactless optical detection of yarn at a workstation of a textile machine in which the yarn moves in a sensing slot between a source of radiation and an optical sensor having at least one row of radiation sensitive elements, whereby shading of the individual radiation sensitive elements by yarn moving through the sensing slot is monitored and a state of the yarn is evaluated on a basis of the monitoring. The method monitors and evaluates a position of the yarn in the sensing slot or a time course of the position of the yarn in the sensing slot. A change is detected in the position or in the time course of the position of the yarn in the sensing slot corresponding to a yarn break before an end of the yarn break passes through the sensing slot. When the yarn break is sensed, a stop signal is generated for the workstation.

A method is provided for contactless optical detection of yarn at a workstation of a textile machine. The yarn moves in a sensing slot between a radiation source and an optical sensor having at least one row of radiation sensitive elements. Shading of the individual radiation sensitive elements by yarn moving through the slot is monitored and a state of the yarn is evaluated based on the monitoring, which includes monitoring and evaluating a position of the yarn in the sensing slot or a time course of the position of the yarn in the sensing slot. A change is detected in the position or in the time course corresponding to a yarn break before an end of the yarn break passes through the sensing slot. When the yarn break is sensed, a stop signal is generated for the workstation.

A method for automatically piecing a thread at a workstation of a textile machine, includes seeking an end of the thread on a surface of a bobbin with a suction nozzle and unwinding the thread from the bobbin counter to a regular draw-off direction of the thread and sucking the thread into the suction nozzle. The bobbin is driven in a direction of reverse rotation with a drive. A thread loop is draw-opened in the thread and moved towards a piecing unit via movement of a feeder unit. The bobbin is driven in the direction of reverse rotation during the drawing-open of the thread loop such that the thread is unwound from the bobbin. A speed of reverse rotation of the bobbin is coordinated with movement of the feeder unit.

A method for monitoring air flows required for handling a thread and/or fiber band in a spinning machine having a plurality of spinning positions, and to a spinning machine unit. At least one air flow-generating source is associated with the spinning machine and is connected to an air flow duct in an airflow-communicating manner, the air flow duct having an air flow main duct, coupled to the source in an air flow-communicating manner, and a plurality of air flow branch ducts branching off from the air flow main duct, each branching off to a spinning position for supplying the air flow to the spinning positions' handling units for handling a thread or fiber band. The spinning machine is allocated an evaluation device for evaluating measurement data and a detection unit for detecting productive and/or non-productive spinning positions and/or handling units, the detection unit being connected to the evaluation device for data transmission. An air volume flow measuring unit is provided which is arranged in the air flow main duct between the source and the air flow branch duct nearest to the source along the air flow path, the air volume flow measuring unit being connected to the evaluation device for data transmission. The air volume flow is measured by means of the air volume flow measuring unit and the measurement result is transmitted to the evaluation device. Furthermore, the number of productive and/or non-productive spinning positions is detected by the detection unit at the time of the air volume flow measurement and transmitted to the evaluation device. An air volume flow target value is determined by the evaluation device depending on the number of detected productive and/or non-productive spinning positions, the air volume flow target value corresponding to a total air volume flow requirement of the spinning positions which are productive at the time when the measurement is taken. The air volume flow target value is then compared with the actual value of the measured air volume flow by the evaluation device, the evaluation device making an evaluation on the basis of the comparison as to whether there is an unacceptable deviation between the actual value and the air volume flow target value.

In order to optically sense a yarn moved in the longitudinal direction of the yarn, a yarn sensor has a light source, a detector and a light guiding element. The yarn sensor is based on the effect of frustrated total internal reflection (FTIR). Because of the FTIR effect, scattered light exiting the light guiding element in the contact region between the yarn and an outer surface of the light guiding element is detected by means of the detector, in which case sensing of the yarn lying against the outer surface is enabled. Alternatively, the reduced intensity in the totally internally reflected beam is then sensed by the detector. The intensity in the totally internally reflected beam is reduced mainly by the scattered light coupled out of the light guiding element.