JPH04197966A - Fine spinning frame quality supervising method - Google Patents

Abstract

PURPOSE:To enable the cause of a thread fault to be investigated by analyzing relations between the shape of the thread fault which caused a clearing action and the spinning unit component which caused the thread fault, based on spindle identification information, the times of end breakage that occurred during spinning, and clearer thread fault information, and feeding the analyzed information back to the fine spinning frame. CONSTITUTION:An end breakage monitor 12 of a fine spinning frame 1 transfer spindle identification information and the times of end breakage during spinning to a centralized monitoring computer 15. The clearer monitor 14 of a winder 5 transfers clearer thread fault information to the centralized monitoring computer 15 via a constant length monitoring device 13. The centralized monitoring computer 15 analyzes, based on this collected information, the relations between the shape of the thread fault which caused the clearing action and components of fine spinning units S1 and S2 which caused the thread fault, and feeds the analyzed information back to the fine spinning frame 1. This permits to identify the fine spinning frame spindle which caused the thread fault and the faulty component of the spindle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a quality monitoring method for a spinning frame, and particularly to a quality monitoring method for a spinning frame in a spinning winder in which a spinning frame and an automatic winder are linked.

2 Conventional Technique #i2 In general, between a spinning machine and a winder, the quality of the yarn produced by one spinning machine unit is inferior to that produced by another unit, and yarn breakage occurs frequently during the rewinding process. Even if this phenomenon does not occur, it may be difficult for the winder to understand that there are many splicing points in the wound package. In other words, the yarn produced by the above-mentioned specific spinning unit is freely rewound by which winding unit in the winder.
Therefore, bobbins doffed from a spinning unit that produces yarn with poor quality for some reason and bobbins doffed from other normal spinning units are supplied to the winder in a random manner. Many of the packages that are doffed in wine tanks often contain yarn of poor quality.

For this reason, we track the conveyance route of the yarn produced in the spinning unit, understand the spinning unit that produces the bobbins that abnormally frequently break yarn during rewinding in the winder, and collect information on yarn breakage in the winder. There is a demand for a system that can provide feedback to the spinning machine and grasp each spinning unit of the spinning machine, and various proposals have been made.

FIGS. 5 and 6 show an example of the configuration of a conventional spinning winder.

The bobbin B (Fig. 7), which has been fully wound in the spinning machine 1, is doffed with all the spinning units 81 to Sn at the same time, and is inserted into the veg installed on the bobbin conveyance path 2. Ru. Thereafter, by intermittent movement of the bobbin conveyance path 2 in the direction of the arrow 3, the bobbin Ba is moved from the upper end of the inclined conveyor through the chute 4.
It is supplied and inserted into the peg of the bobbin tray T (Fig. 7) waiting below. Then, they are sequentially transported from the spinning bobbin supply station 9 to the bobbin transport path 20 of the winder 5 in the next process, and are rewound by each winding unit W1 to Wn.

Here, the empty bobbin B is transferred to the bobbin extraction station 6 on the conveyance path 21 while being integrated with the tray T, and the empty bobbin and the bobbin with a very small amount of yarn remaining are extracted from the tray. Spinning III after conveyance N7 and 8
The remaining thread bobbin is either discharged separately or sent to box 37.
stored inside.

The bobbin supply station 9 and each winding unit W1
-Wn are provided with reading devices i7 and 13 for reading the barcode 11 attached to the top surface 10 of the tray T, as shown in FIG. The tray identification signal read by the reading device 17 is once input and stored in one control device mainly composed of a CPU, thereby identifying the tray in question (for example, T7) and the bobbin on the tray (for example, Bl). On the other hand, the tray identification signal (for example, T
7) is input to the control device 19 together with bobbin presence information indicating whether there is a bobbin on the tray at that time, that is, whether the bobbin has been removed by an operator due to a defect. If there is no bobbin on the tray, it is determined that the bobbin B1 on the tray T7 is a defective yarn according to the information read and stored in advance at the bobbin supply station 9, and the spinning unit S1 corresponding to the bobbin B1 is checked. Note that there is also a form in which a magnetic medium is attached to the tray T for writing and reading.

In this way, by directly or indirectly attaching an identification mark to the spinning bobbin produced by the spinning machine, the spinning unit that does not produce the bobbin can be identified, and the yarn quality information obtained on the winder side and the above identification mark can be identified. It becomes possible to understand and manage a specific spinning unit. That is, if the number of yarn breaks during winding exceeds a predetermined limit, the bobbin on the tray can be identified from the identification mark on the tray of the bobbin, and the spinning unit can be specified.

Problem to be solved by the S invention] However, in terms of yarn quality control, yarn defects that frequently result in yarn breakage in the winding unit can be detected by any component of the spinning machine, such as the apron, snell wire, or traveler. It is desirable to track whether or not yarn breakage occurs at the section location. From this point of view, conventional yarn quality control is only based on information on whether the number of yarn breakages during winding exceeds a predetermined limit, and there is a lack of information. Therefore, necessary and sufficient quality monitoring cannot be carried out.

The purpose of the present invention has been made in view of the above problems, and
If a product with defective yarn quality is found, the defective J%
It is an object of the present invention to provide a yarn quality monitoring method capable of identifying the spinning spindle that is the cause of the occurrence and tracing the location of the constituent section of the spinning spindle to determine the cause of the defect.

(2) Means for Solving the Problems (2) The method for monitoring yarn quality of the present invention includes:
A central monitoring computer collects spindle identification information and the number of yarn breakages during spinning from the thread breakage monitor of the VT spinning machine, as well as clearer yarn defect information from the wineter's fixed length/monitoring device and clearer monitor. The purpose is to investigate the correlation between the shape of the yarn defect that caused the clearing operation and the component of the spinning unit that caused the yarn defect, and feed back the analyzed information to the spinning machine.

[Operation] The yarn breakage monitor of the spinning machine transmits the weight identification information and the number of yarn breakages during spinning to a central monitoring computer. The winder's clearer monitor also transfers clearer yarn defect information to a central monitoring computer via a fixed length/monitor device.

Based on the collected information, the central monitoring computer investigates the correlation between the shape of the yarn defect that caused the clearing operation and the component of the spinning unit that caused the yarn defect, and The analysis information is fed back to the spinning machine. This correlation is performed in light of the relationship that, for example, the shape of a yarn defect called a fish occurs at the location of the ring traveler.

: Implementation S2 Hereinafter, the present invention will be described with reference to illustrated embodiments.

FIG. 1 shows a spinning winder in which the spinning frame 1 and the automatic winder 5 are linked together.
The winder 5 is provided with a fixed length/monitor device 13 and a clearer monitor 14 on the -@ side of the winding units y)J'1JW1 to Wn.

The conveyance system for the spinning bobbin B in this spinning winder is the same as that explained in Figs. The device 13 makes it possible to identify and track spinning units that do not produce the bobbins B on the tray T. 15 is the information from the thread breakage monitor 12 of the spinning machine 1 and the fixed length/monitor equipment of the winder! This is a winder centralized monitoring computer that collects information from the clearer monitor 13 and clearer monitor 14 and analyzes and evaluates yarn quality.

The yarn breakage monitor 12 of the spinning machine 1 indicates the spinning bobbin B during spinning.
and to understand in which part of the spinning bobbin B the yarn breakage occurs, that is, whether the yarn is 1st part, 2nd part, 3rd part, etc.
... is used to determine at what point in the spinning process the yarn breaks when it is wound onto the spinning bobbin B. Normally, this means that the horizontal axis indicates each bart (1 part yarn, 2 part yarn, 2 part yarn, 3rd division ball・
) and is expressed as a histogram with the total number of thread breakages plotted on the vertical axis. The main function of the yarn breakage monitor 12 is to create this histogram, but it does not know which spindle and how many times yarn breakage occurred for each spinning unit 81 to Sn. The "weight identification information" and "number of thread breaks for each spinning bobbin" of the units S1 to Sn can be taken out.

The spindle identification information of the spinning machine 1 and the number of yarn breakages for each spinning bobbin are transferred from the yarn breakage monitor 12 to the winder intensive monitoring computer 15, where they are classified and stored.

On the other hand, the clearer monitor 14 of the winder 5 collects and manages yarn thickness information from a yarn clearer (not shown) such as a slab catcher provided in each winding unit W1 to Wn for the purpose of removing yarn defects. Here, the yarn clearer has a function to detect yarn defects such as slabs related to yarn thickness from changes in capacitance or amount of transmitted light and cut the yarn, and after clearing the yarn, the winding unit has a Knotting is performed by a yarn splicing device (not shown).

Yarn thickness information from the yarn clearer can always be obtained while the yarn is running, including information about small yarn defects that do not require the above-mentioned clearing operation, but usually yarn defects exceeding the allowable limit are detected. Only the thread cutting signal indicating whether or not the thread has been cut is extracted and used for the above-mentioned thread cutting. However, in the present invention, when thread cutting occurs, fine information regarding the thickness of the thread at the time of thread cutting is obtained. information including
This information is used as "thread thickness information."

The yarn thickness information of the yarn clearer at the time of yarn cutting can be roughly classified according to the type of yarn defect as follows.

(1) S (Short t) as shown in Figure 3(a)
hiCkplace yarn defect (2) L (Lor+g t
hickplace) Thread defect (3) Thin pl
ace) Yarn defect The clearer yarn defect information (yarn defects for S, L, and T) obtained on the clearer monitor 14 of the winder 5 also includes constant length and yarn defects.
The information is collected via the monitor device 214 into the winder central monitoring computer 15, and is classified and stored by spinning bobbin.

In the end, the winder central monitoring computer 15 has the following information:
The spindle identification information from the spinning machine 1 and the number of yarn breakages during spinning are classified and stored for each spinning bobbin, and clearer yarn defect information (S, L, T yarn defects) from the winder 5 is stored for each spinning bobbin. Classified and memorized. Based on this information, the winder intensive monitoring computer 15 investigates the correlation between the occurrence of yarn defects and the constituent parts of the spinning unit that are the cause thereof, and feeds back the analytical information to the spinning machine.

Next, the correlation between the types of yarn defects that occur and the constituent parts of the spinning unit that are the causes will be explained.

FIG. 2 shows an example of the configuration of one spindle of a ring spinning frame. The roving 23 coming out of the roving frame passes through a draft roller with an apron 25 placed between a back roller 24 and a front roller 26. It is given a draft and a twist, passes through the Snell wire 27 to the ring traveler 28 of the heated winding section, and is wound onto the bobbin B.

Yarn breakage that occurs during spinning on a spinning machine is usually caused by extreme changes in cross-sectional size or weak fiber bonding strength, and this is thought to be caused by the process before spinning. . On the other hand, yarn defects discovered and cleared in the winder are often caused by flies (floating fibers M) brought into the yarn by the spinning machine.
Figure 4 shows the classification of the shapes of yarn defects caused by this.

In Figure 4, the most basic form is the fly spool (Sl), which is a mass of fly tightly wound into the line over its entire length. The so-called loose fly (S2) is a fiber that sticks to the thread after the front roller, and is usually only one end wound into the thread. The long fly (S3) is due to entanglement of fibers collected on the draft roller or apron, and as a result of the traverse movement of the thread, it is suddenly picked up by the thread and appears in the system as a very long fly entangled. The spiral defect (S4), resembling the shape of a small fish, which suddenly becomes thicker and then tapers off, is caused by fibers stuck to the apron, especially the top apron. The type of defect (S5) that should also be described as “stuck fly” is
For example, fibers wrapped around a ring traveler are wrapped around a thread in a ring shape.

The winder centralized monitoring computer 15 stores these shapes in advance as known yarn defect shapes, and when clearing operations such as yarn cutting and yarn splicing occur in each winding unit, the actual yarn defect shapes are stored in these shapes. By comparing the shapes of yarn defects known in advance and determining their degree of similarity, we can investigate the correlation between yarn defects and the constituent parts of the spinning unit that are the cause of the yarn defects, and identify the spinning units that are the cause of the yarn defects. Identify the component parts of the unit0 For example, a long fly (S3) will reduce the possibility of a draft roller or apron, and a defect in the fly (S3)
4) outputs the possibility of an apron, and the "stuck fly" defect (S5) outputs the possibility of a ring traveler.

In this way, the spindle identification information of the spinning machine 1, the number of yarn breaks during spinning, and the clearer yarn defect information of the winder 5 are input as more accurate yarn quality information that was not possible with conventional methods, and the winder concentration is increased. By having the monitoring computer 15 perform a comprehensive diagnosis, it is possible to more accurately identify the spinning machine spindle in which a yarn defect has occurred and the defective component of the spindle. Therefore, accurate spinning spindle management information can be communicated to the quality manager and maintenance manager of the spinning factory.

[Effects of the Invention] As described above, according to the yarn quality monitoring method of the present invention,
If the number of yarn breakages during rewinding is within a predetermined limit, it is possible to track the spinning bobbin and identify the production spindle of the spinning machine, which not only enables machine management for each spinning unit, but also allows you to check the yarn quality at that time. Based on the information, it is possible to determine in which section of the constituent parts of the spinning unit defects occur, which is extremely effective in producing high-quality yarn.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a spinning winder showing an embodiment of the present invention, Fig. 2 is a schematic diagram showing the configuration of a spinning unit, Fig. 3 is a diagram showing the main types of yarn defects, and Fig. 4 The figure is a diagram illustrating the shape of a yarn defect that occurs in a spinning machine, Figure 5 is a schematic diagram showing the configuration of a conventional spinning winder, Figure 6 is a side view thereof, and Figure 7 is a spinning bobbin tray and its bars. FIG. 3 is a diagram showing the relationship between the code and the reading device. In the figure, 1 is a spinning machine, 2 is a bobbin transport path, 5 is an automatic winder, 8 is an empty bobbin transport path, 9 is a bobbin supply station, 11 is a bar code, 12 is a thread breakage monitor, and 13 is a fixed length/monitor device. , 14 is a clearer monitor, 15 is a central monitoring computer, 17.18 is a reading device, 19 is a control device, 23 is a roving, 24 is a back roller, 25 is an apron, 26 is a front roller, 27 is a Snell wire, 28
indicates a ring traveler.

Claims (1)

[Claims] 1. In the spinning winder, the centralized monitoring computer collects spindle identification information and the number of yarn breakages during spinning from the thread breakage monitor of the spinning machine, and clearer yarn defect information from the winder's constant length/monitoring device and clearer monitor. Based on this information, the correlation between the shape of the yarn defect that caused the clearing operation and the component of the spinning unit that caused the yarn defect is investigated, and the analyzed information is sent to the spinning machine. A method for monitoring the quality of spinning machines, which is characterized by backing up.