JPH0342331B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for managing a spinning machine by detecting various defects in the machine and notifying an operator thereof.

[Conventional technology]

An example of a device that manages spinning machines is
There is a device shown in Japanese Patent No. 58-62511. This device takes in a signal indicating variations in yarn thickness from a slab catcher provided in each spinning unit of a spinning machine, digitizes this signal, and then subjects it to Fourier transformation or integration processing. The Fourier-transformed signal is displayed as a spectral graph on a display, and the operator can see by the frequency of its peak part which roller of the spinning unit caused the yarn defect. Further, the amount of non-periodic yarn unevenness can be known from the integral value, and mechanical defects other than the rollers etc. can be known.

[Problem that the invention seeks to solve]

In the device disclosed in the above-mentioned publication, defects in the yarn or the spinning machine are displayed on a display such as an LED or CRT.
However, in a factory with a large number of spinning machines installed, operators have a wide range of work to do and are busy, and the reality is that they do not have the luxury of checking the above-mentioned display over and over again. Furthermore, since the display only clearly indicates the occurrence of a defect and its location, there is a problem in that only a skilled operator can quickly take measures against the defect. The present invention aims to solve these problems.

[Means for solving problems]

The structure of the present invention is shown in FIG.

S1 and S2 are spinning machines, and each spinning machine has a large number of spinning units U1, U2, . . . . Each unit is provided with a suitable sensor for detecting variations in yarn thickness, etc., and the data output from each sensor is collected by the data collecting means 1 either all at once or in a time-sharing manner. The collected data is transferred to the calculation means 2 at any time, and is subjected to calculation processing according to a predetermined processing method, such as the aforementioned Fourier transform or integral analysis. Each value obtained by the calculation is compared with a predetermined value by the comparison means 3, and thereby a defect in the spinning machine is detected. When a defect is detected by the Fourier transform, the following transform means 4
A signal regarding countermeasures such as "Replace the roller" is output from the controller. This signal and the signals related to the machine and unit that caused the above-mentioned defect are supplied to the next notification means 5, and based on these signals, the means 5 instructs the operator, for example, ``Replace the roller.''
A voice notification such as "S1, U1" is made.
6 and 7 are memories each storing a predetermined value or code.

[Effect]

The converting means 4 converts the output from the comparing means 3, which simply indicates the existence of a defect, into one that indicates specific countermeasures that are easy for the operator to understand. Furthermore, since this instruction is given by voice by the notification means 5, the operator can confirm the above instruction from a position away from the management device.

〔Example〕

In FIG. 2, signals related to yarn from respective spinning units U1, U2, . 14 to the host computer 15. The computer 15 further processes the data supplied from the processing device 11, and issues a command to the display computer 16 according to the result of the calculation. The display computer 16 displays a predetermined video on the display device 17 in response to the command, and also supplies an audio code having the same content as the video to the audio output device 18. Display computer 16
When the above-mentioned command is not received, the music output device 19 consisting of a cassette recorder or the like is driven.

The output signals of the two output devices 18 and 19 are wirelessly broadcast by an FM transmitter 20, and the operator listens to the broadcast using a headphone 22 equipped with a receiver 21.

FIG. 3 shows the main parts of each spinning unit U1, U2, . . . . 24 is a back roller, 25 is a middle roller, and 26 is a front roller. An apron 27, which is an endless rubber belt, is wound around the middle roller 25. Each roller 24, 2
5 and 26 each consist of an upper top roller and a lower bottom roller, and draft the sliver (S). 28 is an air injection nozzle which twists the sliver (S) coming out of the front roller 26 to produce a spun yarn (Y). 29 is a delivery roller that pulls out the yarn from the nozzle 28, and 30 is a photoelectric conversion type yarn unevenness detector, ie, a slab catcher, that detects variations in the thickness of the yarn (Y) and outputs a yarn unevenness signal.

FIG. 4 shows the structure of the yarn unevenness signal processing device 11 provided for each spinning machine S1, S2. 3
1 is connected to each yarn unevenness detector 30 and the detector 30
The yarn unevenness signal supplied through the multiplexer 31 is voltage amplified by an amplifier 32 and then sent to an A/D converter 33.
is converted from an analog signal to a digital signal.
The digital signal output from the converter 33 is branched and supplied to an integrator 34 and a Fourier transformer 35, where the integral analysis and spectrum analysis described below are performed. Integral analysis is performed over a certain interval (l) as shown in Figure 5.
This is done by integrating the absolute value of the displacement amount (shaded area) from the average amplitude value (E) for the yarn unevenness signal, and thereby the total amount of yarn unevenness in a given length of yarn (Y) is calculated. Desired. Spectral analysis is performed to detect periodic components of the yarn unevenness signal as shown in FIG. On the other hand, as shown in FIG.
is input, and the speed of the thread (Y) is calculated from the diameter (DB) of the roller 26b. front roller 2
If there are scratches or the like on the circumferential surfaces of the rollers 26a and 26b, periodic yarn unevenness will occur in the spun yarn (Y), and the output of the Fourier transformer 35 will be affected by the rollers 26a and 26.
A peak occurs in the frequency portion corresponding to b. These frequencies are determined from the roller diameters (DT) and (DB) and the yarn speed mentioned above. Each output of the integrator 34 and Fourier transformer 35 is supplied to a comparator 39,
Each is compared with a predetermined value. This value is indicated by a line segment (l) in the example of FIG. Display 4
Display on 3. This display 43 is shown in FIG. In the same figure, (No.) is unit U1,
The LED 44 of the fourth unit number is currently lit, indicating that the processing device 11 is currently calculating the thread unevenness signal of the unit U4. TR is front top roller 26a, BR is front bottom roller 26
b, ANTH indicates other frequencies, and SD indicates integral analysis. That is, the first unit U1
It is shown that periodic thread unevenness occurs due to causes other than the front roller, and thread unevenness caused by the front top roller 26a and non-periodic thread unevenness occur simultaneously in the third unit U3. ing. Note that the comparator 39 is actually a part of the functions of the microcomputer 38, and is shown separately and independently for convenience of explanation.

The host computer 15 controls each of the display devices 43 of the yarn unevenness signal processing device 11 described above.
Unit U checks whether LED43 is lit or not.
1, U2...Repeatedly check in order. In this process, if a certain LED 43 is lit, the host computer 15 creates one of the messages M1 to M6 corresponding to the LED according to the table shown in FIG.
S2 and the unit numbers U1, U2, . . . are supplied to the audio output device 18. Furthermore, while repeatedly checking the LEDs 44, if the same LEDs 44 of the same units U1, U2, .

The above predetermined time is when the operator
After knowing that the LED is lit, remove the cause of the LED lighting,
This time is the standard time required until normal operation is resumed plus some extra time, and is registered in advance in the memory of the host computer 15. In other words, if the operator had discovered the lighting of the LED 44 without delay and promptly taken countermeasures, the time would not have been exceeded.

FIG. 8 shows details of the operation of the host computer 15. The host computer 15 first performs initial settings for the first machine S1 and sets the machine number "1" (step), and then sequentially changes the status of each LED 44 from the first unit U1 to the last 60th unit. Sampling (step ~〓〓), when all units are completed, perform the same operation on the second machine S2, and when this is completed, perform the operation again on the first machine S1. Repeat the operation shown in FIG.

For example, for the first unit U1 of the first machine S1, the host computer 15 first displays the LED indicated by TR regarding the front top roller 26a.
44 is lit by sampling (step), and if it is not lit, the LED indicated by BR related to the front bottom roller 26b
(step), and if it is not lit, it is related to periodic yarn unevenness in other frequency components.
Check the LED indicated by ANTH (step),
Furthermore, if this is not lit, check the LED indicated by SD related to non-periodic yarn unevenness based on integral analysis (step), and if this is also not lit, it is determined that there is no problem with the unit U1. The unit number is replaced from "1" to "2" (step 〓〓), and the operation moves on to the second unit U2. The states of the four types of LEDs captured in each step above are stored in the accumulator in the host computer 15 for each machine S1 and S2.
Units U1, U2...separate, and inspection items TR,
The values are added separately for BR, ANTH, and SD and stored in memory, and if the LED is off, the added value is cleared. When the lighting of TR is detected in step, the added values regarding machine U1, unit U1, and item TR are read out from the memory and compared with a predetermined value (step). This value corresponds to the predetermined time for processing by the operator described above, and therefore, when this value is larger than the above-mentioned added value, that is, the required processing time is
If the required processing time is longer than the lighting time of the LED, it is determined that the processing by the operator has not finished yet, and the process moves to the step. If the required processing time is shorter than the lighting time, the processing by the operator has been completed. It is assumed that this is the case and moves to the step. In this step, TR is calculated based on the table shown in Figure 8.
Messages M1 and M3 corresponding to the above are read from the memory and displayed on the display computer 1 along with codes indicating the machine number "1" and the unit number "1".
6 to the display device 17 and the audio output device 18. In the step,
If the messages M1 and M3 are currently being output, they are stopped and message M7 is output instead. Approximately the same operation as above is performed for the other inspection items BR, ANTH, and SD.

The display computer 16 converts the input from the host computer 15 into a video signal and an audio code and outputs the same, and the audio output device 18 converts the code input from the display computer 16 into an audio signal and outputs the converted signal. The operator listens to this via the transmitter 20, receiver 21 and headphone 22. The output of each message M1 to M7 continues until the lit LED 44 is turned off by the operator's processing, and when there is no message input from the host computer 15, the display computer 16 drives the music output device 19 to listen to music.

Therefore, when no problems occur in each unit U1, U2, . . . and good quality yarn is being produced, the operator is listening to the predetermined music. When periodic yarn unevenness occurs on the yarn (Y) and the yarn unevenness signal processing device 11 determines that the cause is caused by the front roller 26a, the yarn unevenness is detected by the machine number "1". ”, unit U1 with unit number “1”
If this occurs, messages M1 and M3 will be sent to the operator, ``Please remove the fibers wrapped around the front top roller. 1-1'' and ``Replace the front top roller. 1-1.'' , and similar content is displayed in text on the display device 17. If periodic yarn unevenness occurs due to the front bottom roller 26b in unit U2 with machine number ``1'' and unit number ``2'', the message ``Remove the fibers wrapped around the front bottom roller.'' 1-2 ” and “Please replace the front bottom roller. 1-2” M2, M
4 messages are conveyed. Also, if periodic thread unevenness not caused by the front roller occurs in unit U1 with unit number ``1'' on machine number ``2'', the message ``Please replace the apron.'' 2-
1" is transmitted from M5 requesting the replacement of apron 27, and when non-periodic thread unevenness occurs in unit U2 with machine number "2" and unit number "2", the message "Please replace the apron. 2-2'' and ``Please replace the sliver. 2-2'' from M5 and M6 are transmitted.

The operator who has heard these messages M1 to M6 processes the unit in accordance with the instructions of the messages. If the problem is solved by this process and the thread unevenness is eliminated, the LED 44 turns off and the sending of the messages M1 to M6 is stopped, but after the above process is finished and a predetermined time has elapsed. If the thread unevenness is not resolved, another message M7 such as "Please investigate the cause. 1-1" is sent in place of these messages M1 to M6. This message M7 is not intended for a general operator, but for another specialized operator or fixer who is skilled in mechanical repair, etc., so that the specialized operator or fixer performs a thorough inspection of the unit.
Therefore, the headphone 22 is given to a plurality of people including the above-mentioned fixer, and preferably the headphone 22 that can be heard can be switched depending on the general messages M1 to M6 and the message M7 for investigating the cause.

As explained above, in the management device according to the present invention, each unit U1, U2...
The yarn unevenness signal processing device 1 transmits data regarding yarn unevenness.
1 is collected and the data is checked for inspection items TR, BR,
By analyzing each ANTH and SD and comparing each with a predetermined value, it is confirmed whether or not a unit inspection is necessary.

The output from each machine S1, S2 is further collected by the host computer 15, and the need for the above-mentioned inspection is converted into messages M1-M7 instructing appropriate countermeasures. This message is prepared for each inspection item, and the host computer 15 outputs the message together with the machine number and unit number of the unit that requires inspection processing. These outputs are further converted into a video signal and an audio code by the display computer 16, which are displayed in text on the display device 17, and are also displayed audibly on the headphone 22 via the audio output device 18 and transmitted to the operator.

Therefore, when comparing the present embodiment shown in FIG. 2 with the functional block diagram shown in FIG.
In addition, the calculation means 2 also includes a yarn unevenness signal processing device 11.
and the host computer 15, respectively.
The comparison means 3 and the conversion means 4 are included in the host computer 15, and the notification means 5 is included in the headphone 22.
corresponds to Note that instead of the headphone 22, a speaker capable of outputting a loud sound may be used. In addition, in this example, unevenness in yarn thickness was the subject of analysis, but various data obtained from each unit, such as the presence or absence of yarn breakage, the number of occurrences, the number of yarn splices due to knots, and the number of yarn splicing failures, were also analyzed. can do.

〔Effect of the invention〕

According to the present invention, first, the occurrence of a problem in each unit can be known through audio.
The range of action of the operator is not restricted, and the occurrence of the above problem can be quickly detected. Furthermore, since the problem is reported together with the location where the problem occurs, and furthermore, the problem is reported in the form of an instruction to take specific measures against the problem, which has the advantage that the operator can handle the problem quickly and reliably.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram for explaining the outline of the present invention, FIG. 2 is a block diagram showing the entire embodiment of the present invention, and FIG. 3 is a side view showing the main parts of a pneumatic spinning machine. Figure 4 is a block diagram showing the configuration of the thread unevenness signal processing device, Figure 5 is a waveform diagram to explain integral analysis, Figure 6 is a waveform diagram to explain spectrum analysis, and Figure 7 is a display device. 43
FIG. 8 is a diagram showing a table for converting inspection items into messages by the host computer, and FIG. 9 is a flowchart showing the operation of the host computer. 1...Data collection means, 2...Calculation means, 3...
...Comparison means, 4...Conversion means, 5...Notification means,
S1, S2...Spinning machine, U1, U2, U3...Spinning unit, TR, BR, ANTH, SD...Inspection items.

Claims (1)

[Claims] 1 A device for detecting various defects in a spinning machine and managing the spinning machine, which includes a means for collecting data emitted from each spinning unit of a plurality of spinning machines, and a device for classifying the collected data according to predetermined inspection items. means for performing arithmetic processing, means for comparing the calculated value with a predetermined value to detect defects for each of the above items, means for converting the detected defects into predetermined measures corresponding to the items, and the measures. A control device for a spinning machine comprising means for audibly reporting the matter to an operator along with a number indicating the machine and unit in which the defect has occurred.