JPH0693537A - Loom management apparatus - Google Patents

Abstract

PURPOSE:To provide a loom management apparatus capable of estimating the weaving properties of woven fabric and judging whether the cause of a defect is in the weft or warp of the fabric or in the loom itself. CONSTITUTION:The subject management apparatus is composed of a 1st memory means 18 to store the woven fabric conditions for each grade, a 2nd memory means 20 to store the loom conditions for each loom, an arithmetic means 16 to calculate the critical number of broken yarns from the woven fabric conditions stored in the 1st memory means 18 and the loom conditions stored in the 2nd memory means 20, a detection means 10 to detect the real number of broken yarns within every prescribed operating period of the loom and a judging means 16 to judge that the loom is defective when the real number of broken yarns detected by the detection means 10 exceeds the critical number of broken yarns calculated by the arithmetic means 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loom management device.

[0002]

2. Description of the Related Art Conventionally, various inventions for preventing weaving of defective fabrics have been proposed in a method of controlling a loom.

For example, there is a method in which when an evaluation item value is calculated at regular intervals and deviates from a reference value, an alarm is issued to prevent weaving of defective fabrics. Specifically, the CPU in the loom has a control result detecting means, and the CPU takes in the control result data and calculates the evaluation item value at regular intervals. The comparison judgment means of the CPU compares with the reference value, and when it deviates from the reference value, an alarm stop signal is transmitted to the loom side. As a result, a skilled operator can know whether the current operating condition of the loom is good or bad by an alarm without constantly monitoring the display unit (Japanese Patent Laid-Open No. 61-231246).

[0004]

In the central control method for a loom having the above-mentioned structure, the control result data to be taken in is as follows:
It is the operation / stop time, the number of picks, the number of stops, and the number of stops by cause, and the evaluation items are the operating rate, the number of stops / time, and the number of stops / pick. Therefore, from the above data, whether or not the weaving of the woven fabric can be judged to be good or bad, but the cause is the weft yarn or the warp yarn constituting the weaving of the woven fabric, or
It was not possible to determine if there was a problem with the loom itself.

[0005]

SUMMARY OF THE INVENTION Therefore, in view of the above problems, the present invention is capable of determining whether or not the cause is a weft or warp of a woven fabric or a problem in the loom itself when evaluating the weavability of the woven fabric. A device is provided.

[0006]

A loom management device of the present invention comprises a first storage means for storing the fabric condition for each product type, a second storage means for storing the weaving condition for each machine base, and a first storage means. Calculating means for calculating the limit number of thread trimmings from the fabric condition stored in the second storage means and the loom condition stored in the second storage means, a detecting means for detecting the actual number of yarn cutting threads at a constant time during which the loom is operating, and a detecting means. When the actual number of thread trimmings detected by the number exceeds the limit number of thread trimmings calculated by the calculating means, the determining means determines that the loom is defective.

[0007]

[Operation] In the loom management device having the above structure, the following is performed to determine whether or not there is a problem with the loom itself.

The fabric condition for each product type is stored in the first storage means. The variety refers to the type of fabric. Also,
The loom condition for each machine is stored in the second storage means. Then, the calculation means calculates the limit number of thread trimmings from the fabric condition stored in the first storage means and the loom condition stored in the second storage means.

Then, the loom is operated to weave the fabric. At this time, the detection means detects the actual number of thread trimmings at regular intervals during which the loom is operating. The actual number of thread cuts refers to the number of thread cuts that actually occurred within a fixed time.

The judging means judges that the loom is defective when the actual number of thread cuttings detected by the detecting means exceeds the limit number of thread cuttings calculated by the calculating means. Judge that there is.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a loom and a system for controlling the loom showing an embodiment of the present invention.

Reference numeral 10 is a microcomputer provided for each loom. The operation rate of each loom and the like are output by the microcomputer 10.

Reference numeral 12 is a monitoring unit for accumulating data from a plurality of microcomputers 10 in real time.

Reference numeral 14 indicates that at the end of one shift (one work unit time, for example, 8 hours), a host computer to be described later is started up, and the data accumulated in the monitoring unit 12 is transmitted to and received from the host computer. It is a scheduling unit to perform.

Reference numeral 16 is a host computer.
The host computer 16 is provided with an operation status accumulation file 18, a product type master file 20 and a printer 22 for outputting data. Then, the host computer 16 uses the scheduling unit 1
Based on the data sent from No. 4, the data is totaled and stored.

The operating status storage file 18 is a file for storing the operating status of each loom sent from the scheduling unit 14, and is the average rotational speed R of each loom in one shift, the actual number of warp thread trimming threads F1 and The actual thread cutting number F2 of the weft is stored. The storing method will be described based on the flowchart of FIG.

At step a1, the operating status of each machine base for each shift is collected. Then, the process proceeds to step a2.

At step a2, it is judged whether or not the fabric is woven. If the fabric is not woven, the process returns to step a1. If the fabric is woven, the process proceeds to step a3.

At step a3, the host computer 16 registers the actual warp yarn cut number F1 and the weft actual yarn cut number F2 in the operation status accumulation file 18 for each shift of each machine frame.

By the above storage method, the operating status of each machine is registered in the operating status storage file 18.

The product type master file 20 stores in advance each piece of data which is the cloth condition for each kind of cloth.
The data stored here is as follows.

Amount A (line / inch), Total number N
(Book), warp type coefficient C, weft type coefficient D, number of weft cutting x
(Lines / hour), reference rotational speed r (rpm), and tissue difficulty level S.

The host computer 16 calculates the warp limit thread cut count G1 and the weft limit thread cut count G2 based on the data stored in the operation status storage file 18 and the product type master file 20. The calculation method is as follows.

[0025]

[Equation 1]

[Equation 2] Note that α, β, ... μ are exponents and are integers. Further, k represents a coefficient.

Next, a method for the host computer 16 to judge whether or not the loom is defective from the above data will be described with reference to the flowchart of FIG.

In step b1, the actual number F1 of warp yarn cuts and the actual number F2 of weft yarn cuts during the designated shift are totalized from the operation status accumulation file 18. And step b2
Proceed to. The designated shift means one or several shifts poured to determine whether or not the loom is defective. This designated shift can be set arbitrarily.

In step b2, the warp limit yarn cut number G1 and the weft limit yarn cut number G2 of the product type are calculated from the product type master file 20. This calculation method is calculated by the method described above. Then, the process proceeds to step b3.

In step b3, when the actual number of warp yarn cuts F1 is greater than the number of warp limit yarn cuts G1 or the actual number of weft yarn cuts F2 is greater than the number of weft limit yarn cuts G2, that is, (F1> G1 or F2> In the case of G2), the process proceeds to step b4. If not, the process proceeds to step b5.

In step b4, the printer 22 outputs the list of data in the machine. The list of this data is as shown in FIG.
For example, the serial number, product type name and efficiency, the actual number of warp yarn cuts, the actual number of weft yarn cuts, the average number of revolutions, the number of warp limit yarn cuts, and the number of weft limit yarn cuts are output. In other words, the machine number output to this list is the machine that caused the abnormality.

In step b5, it is judged whether or not all the machines have been judged. If all the machines have been judged, the process ends. If not, step b1
Return to.

As described above, when the actual number of warp and weft thread cuts exceeds the number of warp and weft limit thread cuts, it is determined that the cause of the thread cut is in the machine base, and an abnormality occurs in the machine base. Is output. As a result, the list in step b4 is output every morning, and the machine having the abnormality can be immediately maintained, and the work of the day can be smoothly performed. Further, when the actual number of thread trimmings does not exceed the limit number of thread trimmings, it is determined that the machine stand itself has no problem and the woven fabric (or yarn) itself has a problem.

Therefore, since the weavability of each product type is clarified, it becomes possible to make a highly accurate production plan.
It is possible to determine the correct weaving fee, and further contribute to other standardization.

It should be noted that the data stored in the operation status accumulation file 18 and the product type master file 20 are not output as a list only for the machines in which an abnormality has occurred, as in the above embodiment, but if necessary, The data for each machine may be listed and output as shown in FIG. In this case, the weavability of each type becomes clear.

[0035]

As described above, in the loom management device of the present invention, when the actual number of thread trimmings exceeds the limit number of thread trimmings, it is determined that the machine base is in a defective state. Therefore, the state of each loom can be correctly grasped, and it can be determined at a glance whether the quality of the yarn is poor or the state of the loom is poor.

[Brief description of drawings]

FIG. 1 is a block diagram of a loom management system showing an embodiment of the present invention.

FIG. 2 is a flowchart for storing each data in an operating status accumulation file.

FIG. 3 is a flowchart in which the host computer determines whether or not each loom is defective.

FIG. 4 is an output example of a report when the machine base is defective.

FIG. 5 is an output example of data for each product type.

[Explanation of symbols]

 10 ... Microcomputer 12 ... Monitoring unit 14 ... Scheduling unit 16 ... Host computer 18 ... Operating status accumulation file 20 ... Variety master file 22 ... Printer

Claims (1)

[Claims] 1. A first storage means for storing a fabric condition for each product type, a second storage means for storing a weaving condition for each machine stand, and a fabric condition and a second storage means stored in the first storage means. The calculation means calculates the limit number of thread trimmings from the conditions of the weaving machine, the detection means that detects the actual number of thread cuttings at a certain time during which the loom is operating, and the calculation means calculates the actual number of thread cuttings detected by the detection means. A loom management device comprising: a judgment unit that judges that the loom is defective when the number of thread cuts is exceeded.