JPH0210254B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a centralized control method and device for a loom, and particularly to new loom specifications such as total number of warp threads,
It relates to centralized control technology for looms that can quickly respond to the number of wefts, type and thickness of threads, weaving conditions, etc.

Conventional technology In the past, when weaving textiles with new specifications, one loom was used as a test machine, and the number of revolutions of the loom's drive motor, number of strokes, warp tension, on/off timing of each nozzle, and weft were measured. Trial weaving is performed while changing a large number of control parameters, such as the pressure of the fluid (air) in the insertion nozzle, to find the optimal control conditions. In such trial weaving, the operator first applies certain conditions to the loom based on past experience and intuition, starts weaving, and then evaluates the results one by one to find the optimal control conditions through trial and error. is taken.

Problems to be Solved by the Invention However, such a method requires a lot of labor and time, and requires skill. This is particularly an obstacle when it comes to quickly supplying fabrics based on new specifications to the market due to the diversification of the market in recent years.

OBJECT OF THE INVENTION An object of the present invention is to provide a method and device for centrally controlling a loom, which can omit the trial weaving process that requires much labor and time, and improve production efficiency. be.

Structure of the Invention Accordingly, a first method of the present invention is to store past accumulated data in advance in a storage means coupled to a host computer that controls a plurality of looms, and store textile specifications input to the host computer. Using past accumulated data read from the means,
Predetermined calculations or interpolation calculations are performed to obtain standard setting values for loom control.

Furthermore, in the second method of the present invention, past accumulated data is stored in advance in a storage means connected to a host computer that controls a plurality of looms, and the textile specifications inputted to the host computer and read from the storage means are provided. Using the stored data, predetermined calculations or interpolation calculations are performed to determine standard settings for controlling the operation of the loom, and various operating data from the loom that starts operating with the operation signal based on these standard settings are calculated. In order to optimally control the loom, a plurality of reference values input in advance with prioritization are sequentially compared, and the standard setting values are corrected based on the comparison results.

Furthermore, the apparatus of the present invention is constituted by various means as shown in FIG. That is, the main parts of the device include a textile specification input means 1 for inputting textile specifications, an accumulated data storage means 2 for storing past performance data and similar data, and a textile specification input means 1 for inputting textile specifications. and a set value calculation means 3 that calculates a standard setting value by performing a predetermined calculation using the stored data read out from the stored data storage means 2, and a standard set value calculated by this set value calculation means 3. a set value storage means 4 for storing
Setting value transmitting means 5 for transmitting the standard setting values to the plurality of looms 8, transmitting/receiving means 81 for receiving the transmitted standard setting values at each loom 8, and various operating data transmitted from the transmitting/receiving means 81 for the plurality of looms. and a set value changing means 7 that changes the standard set value stored in the set value storage means 4 based on the various operating data received by the operating data receiving means 6. There is.

With such a method and apparatus, the present invention enables rapid adaptation to new textile specifications.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 is a block diagram of an apparatus for implementing the method of the present invention. In the figure, a host computer 9 forms the core of a device that centrally controls a plurality of looms 8, and has the same functions as the set value calculation means 3, set value storage means 4, set value changing means 7, etc. in FIG. have. And keyboard 1
0 and a display 11 such as a CRT are both coupled to the host computer 9, and the above-mentioned textile specification input means 1 is used to input textile specifications.
It consists of Further, an accumulated data storage means 2 such as a floppy disk is coupled to the host computer 9 as an external storage device. Further, the plurality of looms 8 to be controlled are connected to a host computer 9 via a bidirectional data bus 13 and a communication interface 12 having set value transmitting means and operating data receiving means.

Next, the operation of the above-mentioned apparatus will be explained using an example of weaving a fabric with new specifications.

First, textile specifications are input interactively into the host computer 9 using the keyboard 10 while looking at the display 11. FIG. 3 shows the input procedure for this textile specification. Fabric specifications include warp type, warp thickness, denier,
Data such as the total number of warp threads, weft thread type, weft thread insertion, weft thread thickness, and weft width are sequentially input.

When such textile specifications are input, the host computer 9 calculates standard setting values from past accumulated data stored in the accumulated data storage means 2. Note that the accumulated data storage means 2 includes:
It is assumed that basic data and similar data obtained from past performance are stored in advance.

FIG. 4 shows a flowchart of standard setting value calculation performed by the host computer 9, and FIG. 5 shows functional blocks corresponding to this flowchart.

In these figures, a is a flow chart and a functional block for calculating the standard total warp tension setting value T. First, basic data a indicating the tension/denier of the same yarn type is read out from the accumulated data storage means 2. Next, among the fabric specifications entered from the keyboard 10, the total number of warp threads N, the warp denier number d
Using this, the calculation T=a・d・N/1000 is performed to calculate the warp total tension setting value T.

Next, b is a flowchart and a functional block diagram for calculating the standard pressure (fluid pressure) set value P. Here, past similar data similar to the weft type input from the _keyboard 10 is stored from the accumulated data storage means ₂ as shown in FIG.
. . . and _the fluid pressures P ₁ , P _{2 .}
Find Pi and Pi+ ₁ , and use them to calculate P=(Pi+ ₁ − Pi)・(b−bi)/(bi+
₁ - bi) + Pi is performed to calculate the standard pressure setting value P.

Further, c is a flowchart and functional block diagram for calculating the rotation speed set value R, and d is a flowchart and functional block diagram for calculating the nozzle on/off timing set value t. Similarly, similar data read out from the accumulated data storage means 2 is used to perform interpolation calculations to calculate each setting value.

All of the various standard setting values calculated in this manner are sequentially transmitted as operating signals to the corresponding loom 8 via the communication interface 12 and the bidirectional data bus 13 according to the machine designation.

Next, FIG. 8 is a flowchart showing the sequence of the control condition calculation process up to now as steps 1 to 10, and in this drawing, step numbers are written in parentheses.

Here, in step 3, a determination process is included to determine whether or not the same specifications have existed in the past, and if the same specifications exist, the data of the same specifications are read out from the accumulated data storage means 2. At this time, steps 4 to 8 for calculating each standard setting value are unnecessary and are therefore skipped. By operating according to such a flowchart, each loom 8 receives the operation signal and then performs weaving in accordance with the new textile specifications based on the standard setting values.

Next, the operation for optimally controlling the loom will be explained.

From the keyboard 10, the allowable values of (1) operation rate, (2) number of revolutions, (3) total warp tension, and (4) fluid pressure can be selected in advance as optimal control reference values, in order of priority. Enter data regarding the upper and lower reference values. Here, for the operating rate of the first priority, it is not necessary to input the lower limit reference value. On the other hand, operation data received via the bidirectional data bus 13 and the communication interface 12 is fed back to the host computer 9 from the transmitting/receiving means 81 of each loom 8 that has started operating according to each standard setting value. There is.

The host computer 9 sequentially compares the operation data fed back from the transmitting/receiving means 81 of the loom 8 with a plurality of optimal control reference values inputted in order of priority, and based on the comparison results, each standard I am trying to modify the settings. Such operations are executed by the setting value changing means 7 and the setting value storage means 4 in the host computer 9.

FIGS. 9 1 and 2 are flowcharts showing an example of the operation for performing this optimal control, and the operation according to this flow is performed at regular intervals.

Now, for example, if the loom 8 has a large number of stops due to warp yarn breakage, and therefore does not meet the operating rate, which is the highest priority standard value, in other words, it is judged as "No" in step 1 and "Yes" in step 2. If this is the case, the set value of the total warp tension is lowered within a range that does not fall below the lower limit of the total warp tension, which is the third priority (steps 3 to 7).
However, if the operating rate still does not reach the reference value, the set value of the rotational speed is lowered within a range that does not fall below the lower limit of the rotational speed, which is the second priority (steps 8 to 11).

In addition, if the number of times the weft stop stops is large and the operating rate, which is the highest priority standard value, is not met, that is, if the result is "No" in step 1 and "No" in step 2, the 4th priority is given. However, the fluid (air) pressure is increased within a range that does not exceed the upper limit of the fluid (air) pressure (steps 12 to 16). Next, the third
The total warp tension is lowered within the range that does not fall below the lower limit of the total warp tension, which is the priority of
~Step 20, Step 16). However, if the operating rate still does not reach the standard value, lower the rotation speed, which is the second priority, within a range that does not fall below the lower limit (steps 21 to 24).
16).

On the other hand, if the operating rate is very high, that is, if the answer is "Yes" in step 1, then increase the rotation speed and warp tension until the operating rate does not fall below the lower limit of the standard value (steps 25 to 33). ), if there is still no problem, lower the fluid (air) pressure setting (steps 34 to 37).
29). In addition, in steps 30 to 33,
Whether the upper limit value or lower limit value is optimal shall be entered in advance together with the reference value.
Here, it is assumed that the higher the tension, the better.

FIG. 10 is a detailed block diagram showing an example of the apparatus according to the present invention.

The textile specification input means 1 includes a keyboard 10, a display 11, and a textile specification input circuit 14a for inputting data indicating textile specifications from the keyboard 10.
and a machine number input circuit 14 for inputting the machine number.
b. It includes a textile specification storage circuit 15 for storing textile specification data.

The accumulated data storage means 2 includes a similar item, an interpolation data storage circuit 16, a data read circuit 17 that reads data therefrom, a data write circuit 18 that writes data, for example (tension/
The data storage circuit 19 stores calculation basic data such as denier, and a write circuit 20 writes basic data into this circuit.

Next, the set value calculating means 3 uses the same determination circuit 40, which determines whether or not there is a standard set value of the same specification in the accumulated data storage means 2, based on the data from the textile specification storage circuit 15, to determine the calculation item. A memory circuit 21 that stores stored information, a memory circuit 2 that stores similar interpolation items, and a storage circuit 2 that stores similar interpolation items.
2. Calculation method selection circuit 2 that selects a calculation method using data from each of these storage circuits 21 and 22 and data from the fabric specification storage circuit 15
3. an arithmetic circuit 24 that performs a predetermined arithmetic operation based on the signal from the selection circuit 23; a similarity determination circuit 25;
The similar data storage circuit 26 stores the similar data extracted by the similarity judgment circuit 25, and the interpolation calculation circuit 27 performs an interpolation calculation using the similar data from the similar data and the signal from the similarity judgment circuit 25.

Further, the setting value storage means 4 includes various types of memory means for storing data related to textile specifications and the machine number, as well as storing each standard setting value calculated by the arithmetic circuit 24 and the interpolation arithmetic circuit 27. Further, the setting value transmitting means 5 includes a scanning signal generator 28, a machine number transmitting circuit 29, a setting value transmitting circuit 30 for transmitting each standard setting value stored in the setting value storage circuit 4, and a bidirectional data bus 13. The transmitted standard setting values are received by a transmitting/receiving means 81 on the loom side.

The operating data receiving means 6 is connected to the input channel 32 and the transmitting/receiving means 81 of the loom 8 via the input channel 32 and the bidirectional data bus 13.
It is comprised of an operation data input circuit 33 that inputs operation data from. In addition, the set value changing means 7
These are a judgment criterion input circuit 34 that inputs a judgment reference value from the textile specification input means 1, a judgment criterion storage circuit 35 that stores this data, and an operation quality judgment circuit that inputs future reference values and operation data to judge whether the operation is good or bad. circuit 36, and a setting value correction circuit 37 that corrects each standard setting value stored in the setting value storage circuit 4 based on the judgment result from the operation quality judgment circuit 36.
It is composed of: In addition, each corrected standard setting value is determined as a standard setting value of the corresponding textile specification based on the judgment result of the operation quality judgment circuit 36.
It is stored in the accumulated data storage means 2.

Modifications of the Invention In each of the above embodiments, the accumulated data storage means 2
is intended to use an external storage device such as a floppy disk, but this storage device can also be a semiconductor device built into the host computer, such as battery-backed random access memory (RAM). It may also be one that uses memory.

Effects of the Invention In the present invention, by inputting textile specifications, the host computer automatically calculates each standard setting value from a huge amount of past performance data, gives the standard setting value to the corresponding loom, and concentrates on the weaving machine. Since it is controlled, the trial weaving process can be omitted and production efficiency can be improved.

In addition, the calculated standard setting values are self-corrected to ensure optimal operation, so it can quickly respond to frequent changes in textile types, including unknown textiles due to high-mix, low-volume production, in an optimal state. be able to.

[Brief explanation of drawings]

Figure 1 is a functional block diagram of the device of the present invention, Figure 2 is a block diagram of the configuration of the device that implements the method of the present invention, Figure 3 is a flowchart showing the procedure for inputting textile specifications, and Figure 4 is a diagram of each standard setting. Flowchart of value calculation, Fig. 5 is a functional block diagram corresponding to the flowchart of Fig. 4, Fig. 6 is a diagram showing similar data read out from past accumulated data and their relationships, Fig. 7
FIG. 8 is a flowchart showing the entire operation; FIG. 9 is a flowchart showing an example of the operation for optimal control;
FIG. 10 is a detailed block diagram showing an example of the apparatus according to the present invention. DESCRIPTION OF SYMBOLS 1... Fabric specification input means, 2... Accumulated data storage means, 3... Setting value calculation means, 4... Setting value storage means, 5... Setting value transmission means, 6... Operating data receiving means, 7... . . . Setting value changing means, 8 . . . Loom, 9 . . . host computer.

Claims (1)

[Scope of Claims] 1. A central control device for a loom comprising a host computer, a storage means coupled to the host computer, and a plurality of looms controlled by operating signals from the host computer, The means stores past accumulated data, and the host computer determines whether standard setting values for controlling the operation of the loom having the same specifications are stored in the storage means based on the textile specifications inputted to the host computer. If it is stored, this standard setting value is read out. If it is not stored, similar specification data is read out and a predetermined calculation or predetermined interpolation calculation is performed to determine the standard setting value. A method for centrally controlling looms, characterized in that standard setting values are transmitted as operating signals to the group of looms. 2. The centralized control method for a loom according to claim 1, wherein the standard setting values determined by the host computer include the rotational speed of the driving motor of the loom and the total warp tension. 3. The method for centrally controlling a loom according to claim 1, wherein the standard setting values determined by the host computer include on/off timing of each nozzle and the pressure of the fluid of the weft insertion nozzle. 4. In a central control device for a loom comprising a host computer, a storage means coupled to the host computer, and a plurality of looms controlled by operating signals from the host computer, past accumulated data is stored in the storage means. The host computer determines whether standard setting values for the operation control of the loom having the same specifications are stored in the storage means based on the textile specifications input to the host computer, and stores them. If the standard setting value has been stored, read out this standard setting value, and if it has not been stored, read similar specification data, perform the specified calculation or specified interpolation calculation, obtain the standard setting value, and use this standard setting value as the operating signal. At the same time, various operating data from the loom that has started operating at the standard setting value is sequentially compared with a plurality of reference values that have been prioritized and input in advance for optimal control of the loom. and modifying the standard setting value based on the comparison result. 5. The centralized control method for a loom according to claim 4, wherein the reference values input in advance for optimal control include the operating rate and the total warp tension. 6. A method for centrally controlling a loom according to claim 4, characterized in that fluid pressure is included as a reference value input in advance in order to perform optimal control. 7. A method for centrally controlling a loom according to claim 4, wherein the various operating data from the loom include the number of stops for warp and weft breakage. 8. Claim 4, characterized in that the various operating data from the loom includes the operating rate of the loom.
A method for centrally controlling a loom as described in Section 1. 9. Fabric specification input means for inputting fabric specifications; accumulated data storage means for storing past accumulated data;
When an unstored textile specification is input, a predetermined calculation or a predetermined interpolation calculation is performed using the data indicating the textile specification inputted from the textile specification input means and the stored data read from the stored data storage means, and the weaving machine is operated. Setting value calculation means for calculating a standard setting value as an operating signal for control, setting value storage means for storing the standard setting value calculated by this setting value calculation means, and setting for transmitting this standard setting value to a plurality of looms. a value transmitting means; an operating data receiving means for receiving various operating data from the plurality of looms; and changing standard setting values stored in the setting value storage means based on the various operating data received by the operating data receiving means. A central control device for a loom consisting of set value changing means.