JPH03186567A - Single yarn monitoring device for doubler - Google Patents

Abstract

PURPOSE:To simplify the structure and reduce the cost by installing a detection part arranged in correspondence with each single yarn, revolution detector for a shaft, control part connected with the revolution detector, and an amplifier which amplifies the output signal of each detection part and sends out the input supplied from the control part into each display part and each control part. CONSTITUTION:When either of single yarns 31 and 32 is cut, and either of inputs of the NAND circuit 8 of an amplifier 14 becomes zero level, the output of the circuit 8 becomes 1 level, and a signal is sent into a relay circuit 12, which generates an output, and the circuit 12 and yarn cutters 51 and 52 of the succeeding detectors 61 and 62 are operated, and the single yarn is cut. Further, when a thread defect part in thick thread form passes through either of thread spots detectors 41 and 42, thread spots signals which are relatively large and continue are applied to the input of either of comparators 101 and 102, and if an output is generated in the circuit 12, the cutter is operated to cut the single yarn. Further, the output pulse of the revolution detector 16 of a shaft 15 for driving a drum 1 is frequency-divided according to the prescribed length of the yarn by the frequency divider 18 of a control part 24, calculated by a counter 11, and outputted into the circuit 12.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention monitors the running of yarn and the winding condition in a doubling machine, detects yarn breakage, thick yarn, etc., and further improves the winding process. The present invention relates to a winding yarn monitoring device equipped with means for winding a yarn to a certain length.

[Conventional technology]

In a gold thread machine that twists and winds multiple single threads, if any of the single threads breaks and is wound up as is, it becomes a defective gold thread, which naturally results in production efficiency due to the generation of defective threads and thread breakage in the subsequent thread twisting process. leading to a decrease in For this reason, in the past, a mechanical tension sensor was arranged corresponding to each single thread of gold thread, and a lever action of the mechanical tension sensor was used to stop the winding of the gold thread machine, or an optical and static sensor was placed corresponding to each single thread. There were measures such as installing electric or other electronic detectors to detect thread breakage and issue a signal to stop the machine.

In addition, yarn defects such as neps, slabs, and thick yarns that cause defective yarns are detected and removed by a so-called yan clearer in the single yarn winding machine in the previous process, but the yarn defects during the winding process are The defective yarn portions, such as poor knots and adhesion of thread waste, remain as defective yarns without being removed. In order to detect and remove this, the purpose could be achieved if a Yan clearer was placed in the same way in the gold thread machine corresponding to each single thread, but this would be expensive and the arrangement of the detector would be complicated. .

On the other hand, it is preferable for the doubled yarn to be wound to a constant length for later processes such as twisting and diameter adjustment, and for this reason, the yarn doubling machine is equipped with an electronic constant length winding device that equalizes the package of each yarn. [Problems to be Solved by the Invention] A gold thread machine based on the background of the prior art is equipped with a device for detecting thread breakage and a device for detecting thread defects.

Furthermore, since there are separate devices for winding the yarn package to a fixed length, it is necessary to use these devices individually and repeat the thread winding process, or to combine two of these devices into one gold thread machine. Measures were taken such as installing duplicate types. Therefore, the installation of these devices on the gold thread machine is complicated, the workability is poor, and the performance of each device is unsatisfactory and unstable.

The biggest problem was the high cost.

The present invention solves the problems of the prior art by providing a device that integrates a thread breakage detection function, a thread defect detection function, and a fixed length winding function for winding thread. The package is made of gold thread with no defects,
It is wound up to a certain length, has a simple structure, is inexpensive, easy to handle, detects the thread without contacting it, is unaffected by external atmosphere such as temperature and vibration, and An object of the present invention is to provide an ideal yarn winding monitoring device for a doubling machine that can be installed in any type of high-speed gold thread machine.

[Means for solving problems]

For this purpose, the present invention provides a gold thread machine with a detecting section disposed corresponding to each single yarn of each gold thread wound by being driven by each drum, and a rotation of a shaft driving the drum. a rotation detector for detecting a rotation detector; a control section connected to the rotation detector; amplifying the output signals of each of the plurality of detection sections, and transmitting input from the control section to each display and each of the above-mentioned detection sections; and an amplifying section that sends out signals to the detection section, the detection section is composed of an electronic thread unevenness detector and a thread cutter, and the control section is configured to control constant length setting including a multiplier, a frequency divider, etc. The amplification section is composed of an amplification device, a NAND circuit, an AND circuit, a comparator, a counter, and a relay circuit, and each of the detection section Outputs of the thread spot detectors are respectively connected to amplifiers in the amplifier section, and outputs of the amplifiers are respectively connected to inputs of the NAND circuit, the AND circuit, and the comparator,
The outputs of the fixed length setting device, the thick yarn detection setting device, and the stabilized power supply in the control section are respectively connected to the input of the AND circuit in the expansion section, the input of the comparator, and the power supply of the customer device in the expansion section, and The output of the AND circuit in the amplifying section is connected to the counter that integrates the pulse signals input from the fixed length setter and outputs an output signal when a predetermined value is reached, and is connected to the NAND circuit, the comparator, and the counter. Each output of the counter is connected to the relay circuit and the display device, and the output of the relay circuit is connected to the thread cutter in the detection section, and the thread cutter is operated by the output signal of the relay circuit. The present invention is characterized in that, when the yarn is cut, the display displays the details of yarn breakage detection, thick yarn detection, and yarn cutting due to yarn length full winding.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings, along with their effects.

The second construction diagram is an electrical configuration diagram of an example of the yarn winding monitoring device according to the present invention. are doubled by a guide 26 and wound up as a doubled yarn 2 onto a bobbin 27 driven by the drum 1.

Detectors 61, 6, corresponding to the single yarns 3□, 3□, respectively. is installed.

The detection units 6□, 62 are composed of electronic thread spot detectors 44, 4□ and thread cutters 5□, and thread spot detectors 41.4□.
For example, is an optical detector, with single threads 3□, 3□ between the emitter and receiver.
The yarn cutters 5□, 5□ are composed of an electromagnetic solenoid and a cutting blade linked to it, and a current is applied to the electromagnetic solenoid. Single thread 3 is flowed momentarily to operate the cutting blade.
It has a structure that cuts 1,3□.

The thread spot signals detected by the thread spot detectors 41.4□ are respectively amplified by the amplifiers 71.7□ in the amplifying section 14 and converted into DC signals.

The amplifying section 14 is composed of amplifiers 7□, 7□, a NAND circuit 8, an AND circuit 9, comparators 101, 102, a counter 1, and a relay circuit 12. The amplified and DCized yarn unevenness signal is applied to one input of the NAND circuit 8.

While both yarns of the single yarn 31.3□ are running, the output of the NAND circuit 8 is at the (0) level. ) level, the output of the NAND circuit 8 becomes level (1) and sends a signal to the relay circuit 12. Therefore, the relay circuit 12 generates an output, and the detection parts 6□, 6□ connected to the relay circuit 2
Operate the thread cutters 5□, 5□ to cut the single threads 3□, 3.
Cut □.

In a general gold thread machine, when the single thread 31.3□ is cut, the lever 28 is operated to remove the bobbin 27 from the drum 1 and interrupt the winding. In other words, if any of the 31.3□ single threads breaks, it will result in 3 single threads.

3□ is cut with a thread cutter 51.5□ to prevent the doubled thread 2 from being wound up in the form of a single thread.

In FIG. 1, the output signals of amplifiers 70, 7□ are transmitted to comparators 10□, 10. 10. For example, as shown in FIG. 2, the circuit is composed of a time constant circuit 29 and a comparator circuit 30.

The yarn unevenness signal detected during normal yarn running is relatively small and has a short duration. Therefore, the time constant circuit 29
Since the output potential of is low, no output signal is generated in the comparator circuit 3°.

Now, when a thick yarn defect passes through any of the thread spot detectors 41.4□, a relatively large and persistent thread spot signal is output from the comparator 10.10. which is applied to the input of time constant circuit 2
9 is charged and exceeds the comparison potential of the comparison circuit 30, the comparison circuit 30 sends an output signal to the relay circuit 2. As a result, the thread cutter 51.52 is operated to cut the single thread 31.32.
cut.

Note that the comparison potential of the comparison circuit 30 is variably set by a thick yarn detection/setting device 22, which will be described later, so that the limit of the size of the thick yarn can be selected.

Comparator 10 10. Various other methods have been considered for the construction and operation depending on the shape of the defective yarn portion, but since these are not essential parts of the present invention, detailed examples will be omitted. In FIG. 2, S indicates an input terminal, P indicates a comparison potential terminal, and O indicates an output terminal.

As shown in FIG. 1, a shaft 15 driving the drum 1
A rotation detector upper 6 is provided correspondingly.

For example, as shown in FIG. 3, the rotation detector 16 is composed of a permanent magnet 31 fixed to the shaft 15 and a Hall IC 32, and is configured to generate a number of pulses according to the rotation speed of the shaft 15, that is, the drum 1. It has become.

The output pulses of the rotation detector 16 are multiplied by the number of pulses per unit length by a multiplier 17 in the control section 24.

The control section 24 includes a multiplier F, a frequency divider 18, and a unit length setting device 1.
9, a constant length setting device 21 including a full length setting device 20, a thick yarn detection setting device 22, and a stabilized power source 23.

The length of drum rotation Lo is determined from FIG.

That is, the diameter of the drum 1 is D, and the traverse width of the winding thread 2 is W.
, when the number of rotations of the drum 1 per one round trip of the traverse is n, the yarn length L0 per one rotation of the drum is calculated as follows.

Therefore, the number of pulses per rotation of the drum is

By multiplying by a factor of two, the output of the multiplier 17 generates one pulse per unit length. This multiplication number is set by the unit length setter 19. This is variably set depending on the diameter D of the drum 1, the number n of traverses of the winding thread 2, etc. The length of the yarn wound around the winding yarn 2 is the product of the yarn length L0 per rotation of the drum and the cumulative number of rotations Nd of the drum 1. Therefore, if the thread length is the frequency division value N of the frequency divider 18 and the droplet value of the counter 11, L=L, Nd=NK, and if the droplet value K of the counter 11 is a constant number, N= Frequency divider 1 to the value of L/K
8, the yarn length can be set using the total length setting device 20. Therefore, the output pulse of the multiplier 17 is frequency-divided by the frequency divider 18 according to a predetermined thread length, and the counter 11 is integrated via the AND circuit 9. When the counter 11 reaches the droplet value K, the relay circuit 12 A signal is sent to the machine to operate the yarn cutter 51.5□ to cut the single yarns 3□ and 32.

Note that the AND circuit 9 is provided to prevent the counter 11 from adding up while the winding of the doubling yarn 2 is interrupted;
32 is interrupted and there is no output from the amplifiers 7□, 72, the output pulses of the frequency divider 18 are not output to the AND circuit 9, so the counter 11 does not integrate.

Incidentally, it is practically appropriate for the droplet count value of the counter 11 to be about 1000 counts. By the above-described action, the thread 2 is wound up to a predetermined length.

As shown in the drawing, the display 13 includes a NAND circuit 8, a comparator 10. ．． 10. , are connected to the outputs of the counter 11, respectively, so that the details of yarn cutting due to yarn breakage detection, thick yarn detection, yarn length full winding, etc. are displayed respectively.

In addition, as shown in FIG. 1, detection units 6n, 6n, amplifying unit 14n, and display unit 13n having the same configuration as above are arranged for each drum unit and connected in parallel with power supply unit 25. Then, the thick yarn detection setting device 22 in the control section 24 sets the thick yarn setting limit, and the constant length setting device 21 sets the yarn length.
can be controlled centrally.

In the embodiment, a two-ply thread machine is used, but it goes without saying that the same structure, operation and effect can be achieved for a plurality of thread double-ply machines having three or more threads.

Further, other thread spot detectors such as a capacitive type can also be used as the detector.

In addition, it is practically necessary to connect a time constant circuit at an appropriate location to prevent chattering, noise countermeasures, etc.
The scope of common technical knowledge is excluded from the drawings and descriptions.

〔Effect of the invention〕

As is clear from the above description, the device according to the present invention has functions such as yarn breakage detection, thick yarn detection, and constant length winding only by the configuration of the pair of detection sections and the width increasing section. Despite its multi-functionality, it has a simple structure, can be manufactured at low cost, is easy to install on the machine, is stable against vibrations, temperature and humidity, and other factory atmospheres, and has a high thread detection level. Length settings can be controlled all at once, handling is extremely easy, and the industrial effect of improving yarn quality, guaranteeing it, and saving labor and energy is enormous.

[Brief explanation of drawings]

FIG. 1 is an electrical configuration diagram of an example of a winding monitoring device according to the present invention, and FIG. 2 is an electrical configuration diagram of a comparator. FIG. 3 is a configuration diagram of the rotation detector, and FIG. 4 is an explanatory diagram showing an example of calculating the yarn length for each rotation of the drum. King, 1n...Drum 2.2n...Paired thread winding thread 31.32...Single thread 4□, 4□...Year unevenness detector 51.5□...Thread cutter 6□, 6□ ...detection section 7□, 72 ... widening section 8 ... NAND circuit 9 ... AND circuit 10□, 102 ... comparator 11 ... counter 12 ... relay circuit 13 ...・Indicator 14...Width increaser 5...Shaft 16...Rotation detector 17...Multiplier 8...Frequency divider 19...Unit length setting device 20...Total length Setting device 21... Fixed length setting device 22... Thick yarn detection setting device 23... Stabilized power supply 24 ・ ・ Control section 25 ・ ・ Power supply section

Claims (1)

[Claims] 1. In a doubling machine, a detection unit is provided corresponding to each single yarn of each doubling yarn wound by being driven by each drum, and rotation of a shaft that drives the drum. a rotation detector that detects a rotation detector; a control section connected to the rotation detector and amplifying the output signals of each of the plurality of detection sections, and transmitting input from the control section to each display and each of the detection sections; the detecting section includes an electronic thread unevenness detector and a thread cutting device, and the control section includes a constant length setting device including a multiplier, a frequency divider, etc. The amplifying section is composed of an amplifying device, a NAND circuit, an AND circuit, a comparator, a counter, and a relay circuit. The outputs of the thread spot detectors are respectively connected to the amplifiers in the amplifying section, and the outputs of the amplifiers are respectively connected to the inputs of the NAND circuit, the AND circuit, and the comparator, and The outputs of the length setting device, thick thread detection setting device, and stabilized power supply are respectively connected to the input of the AND circuit in the amplification section, the input of the comparator, and the power supply of each device in the amplification section. The output of the circuit is connected to the counter that integrates the pulse signal input from the fixed length setting device and outputs an output signal when a predetermined value is reached, and each output of the NAND circuit, comparator, and counter The relay circuit is connected to the relay circuit and the display, and the output of the relay circuit is connected to the yarn cutter in the detection section, and the output signal of the relay circuit operates the yarn cutter to cut the single yarn. The winding monitoring device for a yarn doubling machine is further characterized in that the display unit displays details of yarn breakage detection, thick yarn detection, and yarn cutting due to yarn length full winding.