JPS61239057A - Central control method and apparatus of loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a centralized control method and device for a loom,
In particular, new textile specifications such as total number of warp threads, number of weft threads,
It relates to centralized control technology for looms that can quickly respond to yarn types, sizes, weaving conditions, etc.

Conventional technology In the past, when weaving a textile with new specifications, one loom was used as a test machine, and the number of rotations 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 also 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, which requires much labor and time, and improve production efficiency. It is.

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 to store textile specifications input to the host computer and the stored data. Perform a predetermined calculation or interpolation calculation using the past accumulated data read from the means,
I try to find standard setting values for loom control.

In addition, 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 fabric specifications inputted to the host computer are read out from the storage means. Using the stored data, predetermined calculations or interpolation calculations are performed to obtain standard setting values for controlling the operation of the loom, and various operating data from the machine that has started operating with the operation signal based on the standard setting values are calculated. and a plurality of reference values that have been entered prior to prioritization in order to perform optimal control of the loom, 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, textile specifications inputted by the textile specification input means 1, A set value calculating means 3 that calculates a standard set value by performing a predetermined calculation using the accumulated data read from the accumulated data storage means 2, and storing the standard set value calculated by this set value calculating means 3. setting value storage means 4 for transmitting the standard setting values to a plurality of looms 8, setting value transmitting means 5 for transmitting the standard setting values to the plurality of looms 8, and transmitting/receiving means 81 for receiving the transmitted standard setting values at each loom 8.
, an operating data receiving means 6 that receives various operating data transmitted from the transmitting/receiving means 81 of a plurality of looms, and a standard stored in the setting value storage means 4 based on the various operating data received by the operating data receiving means 6. It is composed of a set value changing means 7 for changing the set value.

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 a device 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 10. Displays 1), such as CRTs, are both coupled to a host computer 9 and constitute the aforementioned textile specification input means 1 for inputting textile specifications. 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 apparatus will be explained by taking as an example the case 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 1). FIG. 3 shows the input procedure for this textile specification. As shown here, the fabric specifications include warp type, warp thickness, denier, total number of warp threads, weft type, weft insertion,
Data such as weft thickness and weaving width are input sequentially.

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. It is assumed that the accumulated data storage means 2 stores basic data and similar data obtained from past results 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 flowchart and a functional block for calculating a 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 input from the keyboard IO, the total number of warp threads N,
Using the warp denier number d, T = a - d - N/
A calculation of 1000 is performed to calculate the warp total tension setting value T.

Next, (bl is a flowchart and a functional block for calculating the standard pressure (fluid pressure) set value P.

Here, past similar data of the same type as the weft yarn type inputted from the keyboard 10 is stored from the data storage means 2 as shown in FIG. ... is read out, and for the weft thickness b input from the keyboard 10, bi<
bi, bi+, , Pi, Pi+, satisfying b<bi+
, and using these, p=
(pi+.

-P t) ・(b-b i) / (b i+,
-b i) Perform an interpolation calculation of +Pi to calculate the standard pressure setting value P.

(C) is a flowchart and functional block for calculating the rotation speed setting value R, and fd> is a flowchart and functional block for calculating the nozzle on/off timing setting value t. Similarly, similar data read from the accumulated data storage means 2 is used to perform interpolation calculations to calculate each setting value.

The various standard setting values calculated in this way are all
Communication interface 12 and bidirectional data bus 13
The operating signal is sequentially transmitted to the corresponding loom 8 as a driving signal according to the machine designation.

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

Here, in step 3, a judgment process is included to determine whether or not the same specification has existed in the past, and if the same specification exists, the data of the same specification is read out from the accumulated data storage means 2. . At this time, steps 4 to 8 for calculating each standard setting value are skipped because they are unnecessary. By operating according to such a flowchart, each loom 8, after receiving the operation signal, returns to the standard setting value and performs weaving in accordance with the new textile specifications.

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

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

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 9(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 number of stops due to warp thread breakage in the loom 8 is large, and therefore the operation rate, which is the highest priority standard value, is not satisfied, that is, "No" in step 1.
, assuming that the determination in step 2 is "Yes", the operation of lowering the set value of the total warp tension within a range that does not fall below the lower limit of the total warp tension, which is the third priority, is performed. (Step 3 to Step 7). However, if the operating rate still does not reach the standard value, lower the set value of the rotation speed as long as it does not fall below the lower limit of the rotation speed, which is the second priority (Step 8 to Step 1)) .

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 satisfied, that is, if "NO" in step 1 and "NO" in step 2, the fourth priority is 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 priority is the lower limit of the total warp tension. (Step 17 to 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, Step 16)
.

On the other hand, if the operating rate is very high, that is, in step 1, “
If "Yes", increase the rotation speed and warp tension within the range where the operating rate does not fall below the lower limit of the reference value (step 25).
~Step 33), and if there is still no problem, lower the set value of the fluid (air) pressure (Steps 34~Step 37, Step 29). In addition, in steps 30 to 33, it is assumed that whether the upper limit value or the lower limit value is optimum is input in advance together with the reference value, and here, it is assumed that the higher the tension is, the more optimal the tension is.

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

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

The accumulated data storage means 2 stores similar items, an interpolation data storage circuit 16, a data read circuit 17 that reads data from this, a data write circuit 18 that writes data, and basic calculations such as (tension/denier). It is configured to include a data storage circuit 19 that stores data, and a write circuit 20 that writes basic data to this circuit.

Next, the setting value calculation means 3 uses an identity determination circuit 40 that determines whether or not there is a standard setting value of the same specification in the accumulated data storage means 2 based on the data from the textile specification storage circuit 15.
, a storage circuit 21 that stores calculation items, a storage circuit 22 that stores similar interpolation items, data from each of these storage circuits 21 and 22, and data from the textile specification storage circuit 15 to select a calculation method. method selection circuit 23;
A calculation circuit 24 that performs a predetermined calculation based on the signal from the selection circuit 23, a similarity judgment circuit 25, a similar data storage circuit 26 that stores similar data extracted by the similarity judgment circuit 25, and a similar data storage circuit 26 that stores similar data extracted by the similarity judgment circuit 25. It is composed of an interpolation calculation circuit 27 that performs interpolation calculation using the signal from the R similarity determination 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 value is received by the transmitting/receiving means 81 on the m machine side.

The operation data receiving means 6 includes an input channel 32.
, this input channel 32 and the bidirectional data bus 13
The operating data input circuit 33 inputs operating data from the transmitting/receiving means 81 of the loom 8 via the loom 8. Further, the set value changing means 7 includes a judgment criterion input circuit 34 for inputting a judgment reference value from the textile specification input means 1, a judgment criterion storage circuit 35 for storing this data, and a judgment criterion storage circuit 35 for inputting future reference values and operation data. It is configured to include an operation quality determination circuit 36 that determines the quality of operation, and a set value correction circuit 37 that corrects each standard setting value stored in the set value storage circuit 4 based on the determination result from this operation quality determination circuit 36. ing.

In addition, each corrected standard setting value is determined by the operation quality judgment circuit 3.
Based on the determination result in step 6, the standard setting values for the corresponding textile specifications are stored in the accumulated data storage means 2.

Modifications of the Invention In each of the above embodiments, it is assumed that the accumulated data storage means 2 uses an external storage device such as a floppy disk, but this storage device may be built in the host computer, for example. Semiconductor memory such as battery-backed random access memory (RAM) may also be used.

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, and centrally controls the corresponding loom by giving the standard setting value to the corresponding loom. By doing so, 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 input procedure for textile specifications, and Figure 4 is each standard setting value. A flowchart of calculation, FIG. 5 is a functional block diagram corresponding to the flowchart in FIG. 4, and FIG. 6 is a diagram showing similar data read out from past accumulated data and their relationships.
FIG. 7 is a diagram for explaining the interpolation calculation, FIG. 8 is a flowchart showing the entire operation, FIG. 9 (1) (21 is a flowchart showing an example of the operation for performing optimal control,
The figure is a detailed configuration block diagram showing an example of a device according to the present invention. 1. Fabric specification input means, 2. Accumulated data storage means,
3... Set value calculation means, 4... Set value storage means, 5...
Setting value transmitting means, 6. Operating data receiving means, 7. Setting value changing means, 8. Loom, 9. Host computer. Figure 7 Figure 4 (a)
(b)(c)
(d) Figure θ

Claims (8)

[Claims] (1) 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 and perform the specified calculation or specified interpolation calculation to determine the standard setting value, and use this standard setting value as the operating signal. A method for centrally controlling a loom, characterized in that the information is transmitted to the group of looms. (2) The method for centrally controlling a loom according to claim 1, wherein the standard setting values obtained by the host computer include the rotational speed of the driving motor of the loom and the total warp tension. (3) The standard setting value obtained by the host computer includes the on/off timing of each nozzle and the pressure of the fluid of the weft insertion nozzle.
A method for centrally controlling a loom as described in Section 1. (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 operation control of the loom having the same specifications are stored in the storage means based on the textile specifications inputted 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. and transmit it to the loom group as
Various operating data from the loom that has started operating with the standard setting values are sequentially compared with a plurality of reference values that have been input with priority in order to optimally control the loom, and based on the results of this comparison, the A method for centrally controlling a loom, characterized by modifying standard setting values. (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) The centralized control method for 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) The method for centrally controlling a loom according to claim 4, wherein the various operating data from the loom include the number of times warp and weft breakage is stopped. (8) A textile specification input means for inputting textile specifications, an accumulated data storage means for storing past accumulated data, data indicating the textile specifications input from the textile specification input means when inputting unaccumulated textile specifications; a set value calculating means for calculating a standard set value as an operating signal for controlling a loom by performing a predetermined calculation or a predetermined interpolation calculation using the accumulated data read from the accumulated data storage means; Setting value storage means for storing the calculated standard setting values; Setting value transmitting means for transmitting the standard setting values to the plurality of looms; Operation data receiving means for receiving various operating data from the plurality of looms; and the operating data. A central control device for a loom, comprising a set value changing means for changing standard set values stored in the set value storage means based on various operating data received by the receiving means.