JPH0711526A - System for controlling winder - Google Patents

Abstract

PURPOSE:To provide a winder-controlling system capable of not only specifying a detective spindle but also specifying the abnormal site and the abnormal cause of the defective spindle. CONSTITUTION:The winder-controlling system comprises connecting a winder 2 to a production device 1 for producing yarns with many spindles, collecting the quality data of the yarns from the production device 1, collecting the quality data of the yarns from the winder and analyzing both the yarn quality data to specify the defective spindle of the production device 1 and the abnormal site and the abnormal cause of the defective spindle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winder management system for finding a defect in a production device from yarn quality data on a bobbin when the yarn is supplied from the production device to a winder in bobbin units, and more particularly to a defective weight system. The present invention relates to a winder management system that can specify not only the identification of the abnormality, but also the abnormality site and cause of the abnormality.

[0002]

2. Description of the Related Art A winder comprises a large number of weights, and each weight can independently perform a winding operation. A winding unit constitutes one weight. In the winding unit, the yarn is unwound from the yarn supplying bobbin and wound into a package. Then, the yarn supplying bobbin is exchanged and the yarn is spliced until a certain length of yarn is wound around the package. Further, the defect of the yarn is monitored, and the defective yarn is removed by cutting and splicing so that the defective yarn is not wound into the package. When there are many yarn defects, the yarn supplying bobbin is discarded.

Further, the winder is provided with a supply line for supplying a yarn supplying bobbin to a large number of weights arranged in a line, and a recovery line for recovering an empty bobbin. Further, a line for doffing and transferring the full-roll package is provided along the winder.

On the other hand, a production device for supplying the yarn supplying bobbin to the winder is, for example, a spinning machine, which is also composed of a large number of weights, and each weight simultaneously produces the yarn. It is the spinning unit that constitutes one weight. In the spinning unit, the roving yarn supplied from the roving machine passes through the draft mechanism, passes through the traveler, and is wound around the yarn supplying bobbin. The fully wound bobbin is fried all at once and supplied to the winder.

[0005]

By the way, since the defective yarn is found and removed by the winder, the defective yarn is not wound around the package, but the generation of the defective yarn cannot be prevented by the winder. . This is because the defective yarn is generated at the spinning stage. In order to prevent the generation of defective yarn, it is necessary to take measures in the production equipment. However, only a winder can find a defective yarn. In addition, since it is uncertain to which weight of the winder the yarn feeding bobbin produced by one weight of the production device goes, the yarn feeding bobbin determined by any one of the winders as a defective yarn is Could not identify what was produced in.

Various systems have been proposed for finding a defective yarn with a winder and feeding back the information to a production apparatus. Further, a method of identifying the weight that has produced the yarn supplying bobbin from the winder has also been proposed. For example, there is one in which a winder is connected to an upper monitoring device by a communication line, information of defective yarn is collected by the monitoring device, and a defective weight of a production device is specified. The identification of the defective weight is achieved by numbering the yarn feeding bobbins at the winder take-in portion in order of the weight of the production apparatus.

According to this system, the winder counts the number of yarn breakages for each yarn supply bobbin, discards the yarn supply bobbins with a large number of yarn breaks, and at the same time notifies the monitoring device of the number.
Since the number of the yarn feeding bobbin corresponds to the order of the weights of the production apparatus, the defective weight can be immediately identified.

However, it is not possible to know how to repair the defective weight just by specifying the defective weight.
Defects that appear statistically, such as the number of yarn breakages, cannot be found as remarkable abnormalities even if each part of the spinning unit is inspected. Therefore, it has been difficult to carry out effective maintenance in a short time.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a winder management system which can specify not only the defective weight but also the abnormal portion and the abnormal cause thereof.

[0010]

In order to achieve the above-mentioned object, the present invention is to connect a winder to a production apparatus for producing yarn by multiple spindles, collect the yarn quality data from the production apparatus and to collect the yarn quality data from the winder. Are collected and the quality data of both yarns are analyzed to identify the defective weight, the abnormal portion, and the cause of the abnormality in the production apparatus.

[0011]

The winder can detect the cycle of yarn unevenness. The result of detecting the cycle of yarn unevenness appears in the number of times for each type of yarn breakage. On the other hand, in the production device, since the yarn speed before and after the draft mechanism is different, when the abnormality occurring before and after the draft mechanism is the cause of the yarn unevenness, the cycle of the yarn unevenness is short before the draft mechanism, After the draft mechanism, the cycle of yarn unevenness is long. Therefore, there is a correlation between the number of types of yarn breakage and the abnormality before and after the draft mechanism. If the number of short yarn break types is large, it can be estimated that there is an abnormality in front of the draft mechanism. In this way, it is possible to limit the abnormal portion to a certain range only by using the information on the number of times of thread break types.

Not limited to the number of types of yarn breakage, various types of yarn quality data such as the number of yarn breakages detected by a production device, yarn quality data such as yarn breakage balls, or yarn unevenness rate detected by a winder may be used. It is considered that there is a correlation with the abnormal site and the cause of the abnormality. Therefore, by comprehensively analyzing these yarn quality data, the abnormal portion and the cause of the abnormality can be specified.

The production apparatus also has a part having a consumable item. Changes in yarn quality data due to the consumption of consumables gradually appear. On the other hand, the yarn quality data changes suddenly due to the failure. Therefore, by analyzing the change over time in the yarn quality data, it is possible to identify the abnormality (wear) of the part having the consumable item.

[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 winder management system mainly comprises a spinning machine 1, a winder 2, and a host computer 3.

The spinning machine 1 is a production device for producing yarn and supplying a yarn supplying bobbin to the winder 2, and has a large number of weights 4 composed of a spinning unit. Here, the numbers of the weights are # 1, # 2, ... #N in ascending order of the winder 2. Spinning machine 1
The line extending along is the doffing line 5, which conveys the yarn feeding bobbins, which are doffed all at once to the winder 2. A monitor device 6 is provided at one end of the spinning machine 1, and the monitor device 6 detects the number of yarn breakages in each weight and the yarn breakage balls. The thread breakage ball indicates the number of minutes of thread breakage at which the thread breakage occurs. The monitor device 6 transmits the yarn quality data including the number of yarn breaks and the number of yarn breaks to the host computer 3 at the time of simultaneous doffing.

The yarn supplying bobbin will now be described. As shown in FIG. 3, the yarn supplying bobbin 31 is one in which a cylindrical bobbin main body 32 around which a yarn Y is wound is mounted on a tray 33. A magnetic sheet 34 is attached to the tray 33. The magnetic sheet 34 is capable of writing information using a writing unit described later and reading the information using a reading unit.

The winder 2 has a large number of weights 7 made up of a winding unit. The yarn feeding bobbin supplied from the doffing line 5 is cut out by the cutting device 8 and supplied to each weight. At that time, the cutting device 8 gives a number to the yarn supplying bobbin by using a writing means. This number increases from 1 in order. The yarn feeding bobbins supplied by the simultaneous doffing arrive at the cutting device 8 in the order of # 1 and # 2 of the weight 4 of the spinning machine 1. Therefore, the numbers given to the yarn feeding bobbins are Match the number.

The weights 7 of the winder 2 are arranged along the supply line 9 and the recovery line 10 extending from the cutting device 8. Each weight 7 of the winder 2 is provided with a reading means so that the number of the yarn supplying bobbin can be read.
A fixed length device 11 is provided at the end of the winder 2. The fixed length device 11 has a fixed length control function of monitoring the number of revolutions of the package of each weight 7 and the like to determine full winding. Also,
By a signal from a yarn clearer (yarn monitor) provided for each weight 7, the yarn quality data including the number of times of each type of thread breakage for each bobbin and the yarn unevenness rate is collected. The number of times for each type of yarn breakage is the number of yarn breakages in the yarn supplying bobbin due to three types of defects of S (short thickness), L (long thickness) and T (thinness) detected by the clearer of the winding unit. Indicates that. The yarn unevenness rate (CV%) indicates the degree of yarn unevenness of the yarn supplying bobbin.

When the number of yarn breakages due to a defect is larger than a predetermined value, the constant length device 11 determines that the yarn supplying bobbin is defective. In that case, the yarn supplying bobbin is replaced with a new yarn supplying bobbin while leaving the remaining yarn. With respect to the defective yarn supplying bobbin discharged from the winding unit, the bobbin main body 32 is extracted by an unillustrated extracting device, and only the tray 33 remains in the recovery line 10. The empty tray is returned to the spinning machine 1. On the other hand, the yarn supplying bobbin which is not defective is completely wound up by the winding unit and becomes an empty bobbin. In this case, the empty bobbin main body 32 is collected with the tray 33 attached.

Each weight 7 is provided with a reading means, and the reading means reads the number of the yarn supplying bobbin from the magnetic sheet 34 of the tray 33. Since the number of the yarn feeding bobbin means the number of the weight 4 of the spinning machine 1, it becomes clear which weight 4 of the spinning machine 1 produced the yarn feeding bobbin which is currently being wound by each weight. The constant length device 11 is configured to match this information with the above-described yarn quality data, and to collect the yarn quality data for each spindle of the spinning machine 1.

Next, the host computer 3 is a central device that monitors a large number of spinning machines 1 and winders 2, and can communicate with each monitor device 6 and the fixed length device 11 to collect data. The yarn quality data is collected at each operating time interval (hereinafter referred to as shift). For example, if one shift is 12 hours, there are two shifts per day, so each fixed length device collects data for 12 hours and is performed every time the shift is changed. The monitor 11 of the host computer 10
It displays the collected data and the analysis results.

Since the host computer 10 collects yarn quality data such as the number of yarn breaks for each bobbin, the number of yarn breaks, the number of yarn breaks classified by type, and the yarn unevenness rate, statistics are obtained based on these data. The graphs shown in FIG. 2 are examples. FIG. 2A shows S, L, and T for each doff for the spinning machine 1, and S, L, and T tend to increase with the passage of time. Figure 2 (b)
Shows the number of occurrences of yarn feeding bobbin defects (BQC) per doffing per spinning machine 1, and the BQC tends to increase with the passage of time. FIG. 2C shows the yarn unevenness rate (CV) for each doffing per spinning machine 1.
%), And CV% tends to increase with the passage of time. FIG. 2 (d) shows the number of yarn breakages and the number of BQC occurrences for each spindle per spinning machine 1.
While C is concentrated on a specific weight, the number of yarn breakages is dispersed. FIG. 2E shows the number of yarn breakages per doff for the spinning machine 1, and the number of yarn breakages tends to increase with time. FIG. 2F shows the number of thread breaks for each doff for a specific weight,
The number of times of BQC occurrence is shown. At the beginning, the number of times of thread breakage and the number of times of BQC occurrence were both small and stable.
After the BQC increases and decreases once, the thread breakage also becomes BQC.
Is also increasing rapidly.

The host computer 10 analyzes the pattern of such statistical results, calculates the correlation, collates it with a database or the like, and detects the defective weight and the abnormal portion.
Identify the cause of the abnormality. Examples of abnormal parts and causes that can be identified are, for example, cotton wool, Shinobu, verticality of spinning unit, roundness of balloon ring, bobbin scratches, cutting mistakes at Shino-Join, draft mechanism rattling, temperature and humidity. Influence, rattling of the entire machine, and poor contact pressure of the draft mechanism.

To give a simple example of the correlation between the statistical result and the abnormal portion and the cause of the abnormality, the yarn breakage in the spinning machine is caused by the process before spinning, and many yarn defects found and cleared by the winder are many. In the case of by the fly brought into the yarn in the spinning machine.
The shape of the fly is different depending on the location where the fly is mixed in the draft mechanism, and the shape of the yarn defect is different depending on the shape of the fly. Since the difference in the shape of the yarn defect appears as the number of times for each type of thread breakage, the abnormal portion in the draft mechanism can be finally identified from the number of times for each type of thread breakage. In addition, the cycle of yarn unevenness can be known from the number of types of yarn breakage, and the cycle of the yarn unevenness can be used to determine whether the abnormal portion is before or after the draft mechanism. You can tell where on the bobbin the thread breaks. When it is shown that there are many thick defects according to the number of types of yarn breakage, it can be understood that the Shino joint after cutting the Shino is defective.

In a specific example, when the yarn unevenness rate (CV%) is increasing as shown in FIG. 2 (c), the traveler in the spinning machine 1 is rattling.

The entire machine is rattling.

The contact pressure of the draft mechanism is poor.

The temperature and humidity are improper.

The four failure factors of will be specified.

[0031]

According to the present invention, not only the defective weight can be specified but also the abnormal portion and the cause of the abnormality can be specified. Therefore, the repaired portion and the cause of the failure can be found immediately, and the quick repair can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram of a winder management system according to an embodiment of the present invention.

FIG. 2 is a graph showing statistical results of yarn quality data in the present invention.

FIG. 3 is an external view of a yarn supplying bobbin.

[Explanation of symbols]

 1 Production equipment (spinning machine) 2 Winder 3 Host computer 4 Spindle spindle

Claims (1)

[Claims] 1. A winder is connected to a production device for producing yarn with multiple spindles, yarn quality data is collected from the production device, and yarn quality data is collected from the winder. A winder management system characterized by identifying a defective weight, an abnormal portion, and an abnormal cause.