JPH06128823A - Centralized control system of spinning machine - Google Patents

Abstract

PURPOSE:To provide the centralized control system of spinning machines capable of reducing the memories of the computers of the spinning machines and the memory of a host computer and further capable of displaying the useful operation data and their statistics. CONSTITUTION:The computers 3 of plural spinning machines 1 are connected to a host computer 2, and operation data are formed with the computers 3 on the side of the spinning machines. The operation data are transmitted to the host computer 2 and subsequently eliminated. The operation data are stored in the host computer 2 for recent several periods, and totalized over a longer period than the periods.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centralized management system for spinning machines in which a large number of spinning machines are managed by a host computer, and in particular, the memory of the computer of the spinning machine and the memory of the host computer are reduced in capacity and useful. The present invention relates to a centralized control system for a spinning machine capable of displaying various operation data and its statistics.

[0002]

2. Description of the Related Art Spinning machines are equipped with a large number of weights for processing roving or sliver into yarn. The spinning machine detects the current operating state of each weight in order to grasp the running state of the yarn and the broken state of the yarn. In addition, the spinning machine is equipped with a computer for creating operation data in which the operation status of each weight is statistically calculated based on the temporal change of the operation status, the yarn production amount, the cause of the defect, and the like. The production efficiency can be improved by adjusting the operation of each weight based on the operation data.

FIG. 8 shows an example of a spinning machine system.
In this example, thirty spinning machines 81 each having a large number of weights are arranged, and the computer 83 of each spinning machine 81 creates operation data that statistics the operation status of each weight, and the printer 8
From 2 output a report for every fixed period. Printer 82
Does not need to be provided in the computer 83 of each spinning machine, but is provided in one typical spinning machine. Printer 82
If you save the report output by
It is possible to compare with recent operation data and collect data over a long period of time.

In factories and the like equipped with a large number of spinning machines, it is considered to provide a centralized control device for collectively centrally controlling these spinning machines. A central control device is connected to each spinning machine by a communication line, and the operation data is collected from each spinning machine. A list, graphs, and analysis results of operation data collected from each spinning machine should be shown on the display screen of the centralized control device. Then, when the statistical data of the entire factory is obtained, it is possible to save the labor of collecting the printing results of each spinning machine and manually totaling the same as in the conventional case. By performing centralized management, a large number of spinning machines can be efficiently managed.

[0005]

By the way, when the computer of the conventional spinning machine outputs a report for every fixed period, the operation data is erased and new operation data is created. If the statistics of the driving data are computerized, it is necessary to store the driving data for a long time in the past. Therefore, a large storage capacity is required for the computer. However, the storage capacity of the computer of the spinning machine may be small if the computer of the central control device is in charge of this role.

On the other hand, the central control unit manages as many as 30 spinning machines, calculates statistical data of the entire factory,
It requires a lot of computer storage capacity because it creates graphs. If the long-term operation data of each spinning machine is stored therein, the storage capacity becomes enormous.

It is desirable that the storage capacity of both the computer of the spinning machine and the computer of the centralized control device is small, and in particular, the computer of the centralized control device is required to be composed of a personal computer or the like that can be purchased at low cost. It is difficult to obtain a large capacity.

Therefore, an object of the present invention is to solve the above problems, to reduce the capacity of the computer memory of the spinning machine and the memory of the host computer, and to display useful operation data and statistics thereof in a centralized management system of the spinning machine. To provide.

[0009]

In order to achieve the above object, the present invention connects a plurality of spinning machine computers and a host computer, and the spinning machine side computer creates operation data at regular intervals. The operation data is transmitted to the host side and deleted, and the host side accumulates this operation data for the last several periods and collects it over a longer period.

[0010]

[Function] The applicant of the present invention has found the following tendency as a result of examining how long the operation data is required for production control using the operation data. . That is, the operating data of the spinning machine is a wide variety of data such as the cumulative time for each operating state, the amount of yarn produced, and the failure rate for each cause of failure. Since the operating data between the two are used and the deviation value and the like are calculated, the raw operating data is required at any time. On the other hand, in order to know the production volume and operating rate of the entire factory, it is sufficient to know the cumulative value and average value, so past operation data can be added and used. Instead, relatively long-term data is required. And

With the above construction, since the host computer stores the operation data for the latest several periods, it is possible to process the operation data to obtain the deviation value and the like. At the same time, the host computer collects the operation data over a long period of time, such as the last few periods, so that a cumulative value or an average value can be obtained from the collected data.

Since the computer of the spinning machine may erase the operation data immediately after transmitting it to the host side, the storage capacity may be small.

Since the host computer only needs to have a storage capacity for accumulating operation data for the last several periods and a storage capacity for aggregating operation data over a long period of time, operation data can be accumulated for a long period of time. The storage capacity may be smaller than that required.

[0014]

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

As shown in FIG. 1, the centralized management system for a spinning machine comprises 30 spinning machines 1 and a host computer 2. The spinning machine 1 has a large number of weights arranged in rows and a computer 3. Each weight detects whether the thread is running, whether the thread is cut or cut, what causes the thread to be cut, whether the thread is full, and the like. I always tell.

The computer 3 creates operation data (shift data) which is a time-based total of these detection results and stores it in the built-in memory 4. That time is a shift time that divides one day into three or four equal parts. The shift data has data obtained by determining the time during which the yarn was stopped for each weight for each factor. For example, there are times such as stop due to sliver (thread break), stop due to slab break, end due to ends down (red flag break), stop due to knot miss, stop due to doffing, stop due to defective top roller / bottom roller, etc. The computer 3 sends this shift data to the host computer 2 every time the shift is changed, and then erases the memory 4 to create shift data for the next shift.

The host computer 2 is a personal computer and has a display device 8. The host computer 2 is connected to the computer 3 of each spinning machine 1 by a common communication line 5. Host computer 2
Requests the transmission of operation data by sequentially polling the analysis device 3 of each spinning machine 1 when the shift is changed. The computer 3 of each spinning machine 1 can perform the above-described transmission operation in response to these requests.

The host computer 2 can store operation data in the short-term memory 6 for the last two weeks. 1
Since there are 3 shifts per day, 42 shift data are stored as raw data as they are transmitted by the spinning machine. Each time a new shift data is collected, the oldest shift data is discarded. The usage contents of the shift data for the last 42 times will be described later.

At the same time, each time the host computer 2 collects new shift data, it aggregates and stores it in the long-term memory 7. Aggregation is mainly performed by integration, and the cumulative stoppage time for each factor is obtained over one or several months.

The host computer 2 displays a list on the screen of the display device 8 in the format shown in FIG. 2 based on the stored contents of the short-term memory 6. However, the stop time for each factor is expressed not as time but as a ratio to the total stop time. The display content of FIG. 2 shows the date, the shift number, and the start and end times of the shift, and below that, the data close to the raw data collected is shown. That is, the machine number is shown on the vertical axis, and the horizontal axis indicates stop by sliver, stop by slab break, stop by end down, stop by knot miss, stop by doffing, stop by top roller / bottom roller failure, etc. %, The knotting waiting time, the red flag waiting time, and the doffing waiting time are shown. In this example, 19
The A shift (0:00 to 8:00) on August 14, 1992 is shown up to machine numbers 1 to 6.

The host computer 2 uses the collected shift data to create and display a trend chart for each shift, and also displays work instructions. The trend chart is a graph of the number of thread breaks by factor for each weight of a machine stand,
List of operating efficiencies of all weights of a certain machine stand, list of loss efficiency of all weights of a machine stand (Fig. 4), histogram of weights having loss efficiency in a predetermined range (Fig. 5), weight of a machine stand It is composed of a change graph of the yarn breakage rate by each factor (FIG. 6), a histogram of yarn breakage by factor of each weight of a machine stand, a change graph of the operating efficiency of the spinning machine (FIG. 7), maintenance request information, and the like. These trend charts can be displayed according to each machine, lot, and weight, and can also be displayed as a trend graph, bar graph, and histogram, respectively. Each display content will be described.

FIG. 4 is a list showing the loss efficiency of all the weights of a machine stand, where the horizontal axis represents the weight number and the vertical axis represents the loss efficiency. It can be seen that the weight number 61 has high loss efficiency. From the histogram of FIG. 5, it can be estimated that there are generally many weights with a loss efficiency of around 8% and that there are some abnormalities with weights of 20% or more. If a standard deviation is obtained for this distribution and a weight exceeding a certain deviation value is determined to be abnormal, the host computer can automatically determine the abnormality.

If the cursor is moved to a specific weight in FIG. 4, the breakdown of the stop time (knotting wait time, doffing wait time) and the cause of the stop (slab outage, misnot, etc.) are shown. It is designed to be displayed on the screen at the same time as the above breakdown of the entire machine base.

The change graph of the thread breakage ratio by factor in FIG. 6 is 1
The change in the thread breakage ratio for each weight is shown according to the average of all the weights of the spinning machine. From this, it is possible to understand the change tendency of the thread breakage factor for the past 14 days (4 shifts per day in the example of this figure) for one weight, and if this graph is displayed for the weight determined to be abnormal, The content can be estimated.

If the cursor is set to a specific date and shift in FIG. 6, the breakdown due to thread breakage of the weight at that time (slab break, natural break, misnot, etc.) and the breakdown of the machine base are simultaneously displayed on the screen. It is supposed to be displayed.

FIG. 7 is a change graph of the operating efficiency of the spinning machine. The operating efficiency of the spinning machine on the last 14 days, the average operating efficiency of the spinning machines of the entire factory, and the average operating efficiency of a lot are shown. Seen at the same time. Here, a lot is a group of yarns of the same type.

If the cursor is moved to a specific date and shift in FIG. 6, the respective operating efficiencies or average operating efficiencies of the spinning machine, the entire factory, and the lot at that time can be simultaneously displayed numerically on the screen. There is.

The maintenance report information is a record of the history of maintenance in the previous shift so as to facilitate the handover when the worker is changed by the shift. You can see the raw data as well as the message.

As described above, by using the trend chart, it is possible to find weights and spinning machines having a high defective rate.
Also, the recent trend of change in the defect rate can be seen. In addition, the weight can be evaluated as a relative relationship with other weights from a histogram, standard deviation, or the like, instead of applying an absolute standard to the defect rate.

The host computer 2 creates long-term reports such as daily reports, weekly reports and monthly reports in addition to the trend chart. The display format is almost the same as the shift data display, but the format is such that the date, the start / end time of the shift, and the like represent a long-term report. The thread breakage rate by factor at this time is
It is obtained by dividing the accumulated contents of the long-term memory 7 by the total number of hours or the like.

[0031]

The present invention exhibits the following excellent effects.

(1) Since the spinning machine computer does not need to store shift data one or more times before, the storage capacity may be small.

(2) In the host computer, since the trend chart is created based on the shift data for the latest several periods, the storage capacity for accumulating the shift data may be small, and the recent operation status can be grasped. Can get enough information. Further, since the data for which long-term statistics are required are sequentially accumulated and stored, the storage capacity may be small.

[Brief description of drawings]

FIG. 1 is a block diagram of a centralized management system for a spinning machine showing an embodiment of the present invention.

FIG. 2 is a display screen view showing a shift data list displayed on the host computer of the present invention.

FIG. 3 is a display screen view showing a graph of loss efficiency of all spindles of a machine base displayed by the host computer of the present invention.

FIG. 4 is a display screen view showing a histogram of a weight having a loss efficiency in a predetermined range, which is displayed by the host computer of the present invention.

FIG. 5 is a display screen view showing a change graph of the thread breakage ratio for each weight displayed on the host computer according to the present invention.

FIG. 6 is a display screen view showing a change graph of the operating efficiency of the spinning machine displayed on the host computer of the present invention.

FIG. 7 is a block diagram of a spinning machine system showing a conventional example.

[Explanation of symbols]

 1 Spinning machine 2 Host computer 3 Computer (of spinning machine)

Claims (1)

[Claims] 1. A computer for a plurality of spinning machines and a host computer are connected to each other, and operating data is created by the computer on the spinning machine at regular intervals, and this operating data is transmitted to the host side and erased. A centralized management system for spinning machines, characterized by accumulating this operation data for the last several periods and collecting it over a longer period of time.