SU1416548A1 - Method of weaving in shuttleless loom - Google Patents

Abstract

The invention relates to textile production, in particular to the process of forming fabrics on shuttleless looms. The aim of the invention is to improve serviceability. The method of forming the fabric on the shuttleless loom consists in forming the foramina of the warp, laying the weft yarn into it and then cutting it thin, controlling the laying of the weft yarn And in the presence of its undershoot while turning off the weaving-CTSiiKa, removing the weft yarn from the cutting zone, laying it on run out of the weaving machine of the next weft yarn to form a loop, stop the weaving machine in the open throat position, introduce the resulting loop into the removal zone and pull it out of the throat, change the throat and remove it and nedoletevshey weft posledukhtsnm with its cutting off and start the machine. 1 1Ш. with s

Description

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The invention relates to textile production, in particular, to the process of forming a fabric on shuttleless weaving looms.

The purpose of the invention is to increase the service quality.

The drawing shows a block diagram of the device that implements the method.

The device contains a computing-controlling unit 1, a sensor 2 of the position of the main shaft of the weaving machine, sensors 3 and 4 of the underweight of the weft thread 55 laid in the throat formed by the thread 6 of the warp, the nozzle 7, confusing channel 8, the mechanism 9 for withdrawing the weft thread 5 from the cutting element 10, the mechanism 11 for stopping the loom, the gripping element 12s the mechanism 13 for removing the weft thread 5, the sensor 14 for the thread, the alarm unit 15, the block 16 for reversing the shedding mechanism, the block 17 for controlling the cutting element 10, and 18 launch control of the machine.

The first output of the computational control of the unit 1 block is connected with the output of the second unit and the main shaft of the weaver.

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Whose machine, the second and third inputs 30 are connected respectively to the outputs of the sensors 3 and 4 underlet weft 5, and the fourth input is connected to the sensor output 14 presence of the thread and the input of the alarm unit 15. The first output of the computing and control unit 1 is connected to the machine stop mechanism 11, the second output is connected to the weft thread removal mechanism 13, the third breath is connected to the Q input of the thread presence sensor 1, the fourth, fifth, sixth, seventh and eighth outputs associated, respectively, with the mechanism 9 of the weft yarn 5,

5. Thread removal mechanism 13. It is made in the form of a suction device.

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The method is carried out as follows.

Violation of laying the weft yarn 5 appears in three temporary cases: short undershoot: when the beginning of the laid weft yarn 5 is located between sensors 3. and 4 underweight of the weft yarn, a long undershoot when the beginning of the laid weft yarn 5 is located in the area of the mecha; the cutting element 10 and the sensor 3 undershoot weft thread, as well as the absence of the weft thread 5 in the throat as a result of its breakage before the nozzle 7.

With a long under-flow of the weft thread 5 from the outputs of the sensors 3 and 4 of the under-flight, the weft thread does not receive signals to the second and third inputs of the computational control unit 1, due to what is on its first and fourth. The outputs generate control signals for switching on the machine stop mechanism 11 and the weft thread removal mechanism 9, respectively, from the cutting element 10, respectively.

The weaving of the weaving machine is carried out in such a way that it stops at the open throat position, completing one more cycle of laying the weft thread 5. Considering that the end of the undersized weft thread 5 in the previous cycle of its laying was not cut by the cutting element 10, a weft loop is formed thread 5. According to a given time program from the eighth output of the computing and control unit 1 to the input of the gripping element 12 receives a signal

the inputs of the block 16 reverse of the shed-shaped., its operation, resulting in

mechanism, a control unit 17 for controlling the element 10, a control unit 18 for launching the weaving machine and a gripping element 12,

A microprocessor is used as the computational control unit 1.

The sensors 3 and 4 of the undersize weft yarn 5 are made in the form of plates of the confluent channel 8 and are installed in two zones along its length.

Sensor 2 of the position of the main shaft of the weaving machine is also the same as the number of the specified webs.

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the weft thread 5 is supplied to the thread removal mechanism 13, which is activated when there is a signal from the output of the thread presence sensor 14 and when the signal from the second output of the computing and control unit 1 is supplied. The signaling unit 15 is simultaneously turned on.

Since the machine was stopped in the open throat position, the weft thread 5, proposed in the second paving cycle, is removed from the open mouth of the warp threads 6. Next, from the fifth output of the computational control

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the weft thread 5 is supplied to the thread removal mechanism 13, which is activated when there is a signal from the output of the sensor 14 for the presence of the thread and when the signal is supplied from the second output of the computing and control unit 1. At the same time, the alarm unit 15 is turned on.

Since the machine was stopped in the open throat position, the weft thread 5, proposed in the second laying cycle, is removed from the open mouth of the warp threads 6. Next, from the fifth output of the computational control unit 1, a signal is fed to the input of the reversing unit 16 mechanism, as a result of which the released weft thread 5 with the base is removed from the throat by the thread removal mechanism 13 that continues to operate. After the deletion operation is completed, the weft thread 5 with the signal from the fifth output of the computational control unit 1 is re-enabled the block 16 of the reverse shedding mechanism, the signal from the sixth output, triggers the control unit 17 of the cutting element 10, as a result of which the weft thread 5 is cut off, and after a certain time the signal from the fourth output of the computational control unit 1 turning off the mechanism 9 for retraction of the weft thread 5 from the cutting element 10. At the end of these operations, the weave starting control unit 18 is turned on by the signal from the seventh output of the computer control unit 1.

In the absence of a signal from the output of the sensor 14, the presence of a thread, which indicates that the weft thread 5 is wound before the nozzle 7, only the alarm unit 15 is turned on.

If there is a short undershoot, when only the sensor 3 of the underflow of the weft thread 5 receives a signal to the third input of the computational control unit 1, the last is the summation of the number of short undershoots to a predetermined length of fabric produced corresponding to the number of laid out webs, i.e. sums of impulses

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signals from the output of sensor 2 of the position of the main shaft of the machine to the first input of the computing and control unit 1, In the event that the number of KopoTKiix does not reach the number of weft 5, to a predetermined length, the fabric obtained with respect to the allowance of the device operation is similar removal of the weft yarn with its long undershoot.

Claims (1)

Invention Formula The method of forming the fabric on the shuttle shuttle loom, consisting in the formation of the base maw, laying the weft thread into it with its subsequent cutting, laying the copting, the weft thread n when the weaving machine was not fully turned off, signaling the cause of the stop, changing the mouth and removing the overfilled weft yarn with its subsequent cutting and launching of the machine, characterized in that, for the convenience of maintenance, before changing the throat when the weft is undershoot, simultaneously with switching off the weaving machine Cutting, weaving the mechanisms of the weaving machine following the {1st cycle of laying the weft thread with the formation of a loop and stopping the weaving machine in the open throat position bring the resulting loop of the weft thread to the removal zone and pulling it out of the throat.