JP2001098409A - Production of yarn package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem on difficult discrimination of the anomalous package based on the externals of the full bobbins that are wound up in individual yarn-packaging units under the production conditions according to the longitudinal control system, when yarn packages are produced in a yarn package manufacturing facility where a plurality of yarn package manufacturing units are arranged in parallel. SOLUTION: In this yarn packages-manufacturing process, the anomalous package that is allowed to wind up the yarn and doffed although any abnormality has been detected in the production conditions is separated from the normal packages, until the abnormal yarn package is conveyed to the package collection spot or on the way thereto on the basis of the abnormal information in the production conditions of the package.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a yarn package by forming a yarn from a molten polymer and winding the yarn to form a yarn package.

[0002]

2. Description of the Related Art The following method is known as a method for manufacturing a yarn package. A yarn production unit, (b) a spinning means for discharging the molten polymer to form a yarn, and (b) a yarn cooling means for cooling and solidifying the yarn formed by the spinning means with cooling air. (C) an oil agent applying means for applying a process oil agent to the yarn solidified by the yarn cooling device,
(D) a yarn running means for drawing the yarn formed by the spinning means, passing the yarn through the yarn cooling means and the oil applying means, and then moving the yarn further downstream;
A yarn traversing means for traversing the yarn run by the yarn traveling means on the downstream side of the yarn traveling means; and (f) rotating the yarn traversed by the yarn traversing means. A yarn winding means for forming a winding yarn package on a bobbin, and (f) provided in at least one of the above-mentioned means, the function of the means with respect to the yarn within a predetermined condition. A yarn package for producing a yarn package by a yarn package manufacturing facility comprising a yarn manufacturing condition control means for controlling and (g) yarn breakage detecting means, and a plurality of yarn manufacturing units arranged in parallel. In the method for producing a yarn package, the operation of the yarn production unit is stopped when the yarn breakage detecting means detects the yarn breakage.

[0003] The conventional method of manufacturing a yarn package is as follows.
It is described in JP-B-63-5485. Manufacture of a yarn package by this method is performed by controlling the operating conditions of various means including the spinning means and the winding means between these means in a vertical relationship. Therefore, this control system is called a vertical management system.

[0004] It is well known that a yarn package collecting facility for transferring a yarn package formed in each yarn manufacturing unit and doffed from each yarn winding means to a collection place. It is well known to detect abnormalities in the appearance of a yarn package, for example, abnormalities in surface fluff or winding, and to separate abnormal and normal packages.

[0005] The first feature of the longitudinal management system in the above-described conventional method of manufacturing a yarn package is that the operation of various means existing from upstream to downstream so as to prevent yarn breakage during yarn manufacture. The condition is to be controlled in a vertical relationship. The second feature is that, in the event that a yarn breaks in one of a large number of yarn manufacturing units and the winding of the yarn cannot be continued for that unit, the unit is not used in another unit. While the production of the yarn is continuing, immediately re-thread the unit,
The purpose is to restart the production of yarn. The method for producing a yarn by this longitudinal management method is worth using because of these characteristics.

[0006]

However, it has been found that this prior art has the following problems. It is good for the first characteristic to be alive, that is to say while the control system is operating so that a normal production of the yarn package takes place. However, there are cases where the winding of the yarn package can be continued without exceeding the control limit and without causing yarn breakage in that state. In this case, the yarn package is manufactured, but the manufactured yarn package is an abnormal yarn package. This is mixed with the normal yarn package and carried into the collection site of the yarn package. An abnormal yarn package produced under conditions outside the range of the predetermined yarn production conditions is difficult to be distinguished from a normal package only by detecting the presence or absence of abnormalities in the appearance of the package. There is.

[0007] The second feature is proposed to increase the productivity of the yarn package. However, in consideration of the manpower for re-threading work and the working time, the surprising productivity is improved. Has not contributed to.

The present invention solves the above-mentioned problems of the prior art,
An object of the present invention is to provide a method of manufacturing a yarn package that efficiently manufactures a normal yarn package.

[0009]

A method of manufacturing a yarn package according to the present invention for achieving the above object is as follows. (a) a yarn package manufacturing unit comprising: (a-1) a spinning means for forming a yarn by discharging a molten polymer;
2) a yarn cooling means for cooling and solidifying the yarn formed by the spinning means with cooling air; and (a-3) an oil agent applying means for applying a process oil to the yarn solidified by the yarn cooling means. (A-4) a yarn running means for passing the yarn formed by the spinning means through the yarn cooling means and the oil agent applying means, taking the yarn, and running the yarn further downstream; 5) Yarn traversing means for traversing the yarn run by the yarn traveling means on the downstream side of the yarn traveling means; and (a-6) yarn traversing by the yarn traversing means. (A-7) a yarn winding means for forming a winding yarn package on a bobbin rotating a yarn, and (a-7) provided in at least one of the above-mentioned respective means, and setting a yarn manufacturing condition of the means to a predetermined value. Means for controlling yarn production conditions within the range of (a). ) The information sent from the means for monitoring the yarn production conditions of each of the means and the information sent from other abnormality monitoring means are compared with a predetermined abnormality range, and if an abnormality is found, an abnormality is detected. (B) a yarn package manufacturing facility in which a plurality of rows of the yarn package manufacturing units are arranged in parallel, and (c) a yarn package manufacturing unit formed of each of the yarn packages. A plurality of yarn packages to be doffed from each of the yarn winding means are conveyed to a collection site, and a yarn package collection facility for collecting the yarn packages. (d) Among the plurality of yarn packages doffed from the respective yarn winding units, the yarn detecting unit outputs the abnormality signal from the yarn winding unit of the yarn package manufacturing unit. The Ffingu been yarn package, at or umschlagplatz before arriving at umschlagplatz of the yarn package, as an abnormal package yarn package manufacturing method of which is characterized by fractionating the normal package.

In the method for manufacturing a yarn package according to the present invention, the abnormality determined by the abnormality determining means is determined by the abnormality
(a-1) through (a-6) means for driving the drive motor provided to drive the means described in (a-6) or abnormal inverter current, abnormal cooling air flow of the means described in (a-2), abnormal
abnormalities in the amount of oil agent adhering to the yarn by the means described in (a-3),
Abnormality of the winding tension of the yarn by the means referred to in the above (a-6),
In addition, it is preferable that at least one of the abnormalities in the vibration of the means referred to in the above (a-6) is present.

Further, the abnormality determined by the abnormality determining means is as follows:
In the case of the preset form, it is preferable to stop at least the operation of the means determined to be abnormal in the yarn manufacturing unit determined to be abnormal according to the type of abnormality.

Further, the yarn production condition control means includes:
The information sent from the means for monitoring the yarn manufacturing conditions of each means of the means referred to in (a-8) and the information sent from other abnormality monitoring means are compared with a predetermined abnormality range, and the abnormality is determined. It is preferable to have a function of issuing an abnormal signal when recognized.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram for explaining one embodiment of a yarn package manufacturing facility for carrying out the yarn package manufacturing method of the present invention. In FIG. 1, a yarn package manufacturing facility includes a spinning device 1 for discharging a molten polymer to form a yarn Y, and a yarn for cooling and solidifying the yarn Y formed by the spinning device 1 with cooling air. A cooling device 2, an oil applying device 3 for applying a process oil to the yarn Y solidified by the yarn cooling device 2, and a yarn for imparting entanglement to the yarn Y to which the oil is applied by the oil applying device 3. A yarn entanglement device 4 and a first yarn Y which is entangled by the yarn entanglement device 4 and is taken further downstream.
A yarn traveling device 6 including a roller device 5a and a second roller device 5b; and a yarn traverse for causing the yarn Y to be run by the yarn traveling device 6 to traverse downstream of the yarn traveling device 6. A yarn winding device 7 for forming a winding yarn package P on a rotating bobbin for rotating the yarn Y traversed by the yarn traversing device 26; A plurality of (usually several units or tens of units) rows of one yarn package manufacturing unit comprising a yarn manufacturing condition control device 8 for controlling the function within a predetermined condition range are arranged in parallel.

The control device 8 in each unit receives an instruction such as thread switching from a higher-level local controller 9 and conversely gives the local controller 9 various information in the yarn manufacturing process.

The spinning apparatus 1 has a die 10 for discharging a molten polymer to form a yarn Y, and has a gear pump 11 for feeding the molten polymer to the die 10 and a motor 12 for rotating the gear pump 11.

The cooling device 2 has a cooling cylinder 13 for cooling and solidifying the yarn Y with cooling air, and has a fan 14 for sending cooling air to the cooling cylinder 13 and a motor 15 for rotating the fan 14.

The oil applying device 3 has a nozzle 16 for applying a process oil to the yarn Y, and has a gear pump 17 for sending the process oil to the nozzle 16 and a motor 18 for rotating the gear pump 17.

The entanglement device 4 has an entanglement nozzle 19 for imparting entanglement to the yarn, a compressor 20 for sending compressed air to the entanglement nozzle 19, and a motor 21 for rotating the compressor 20.

In the yarn traveling device 6, the first roller device 5a has a godet roller 22 and a motor 23 for rotating the godet roller 22, and the second roller device 5b has a godet roller 24 and a motor 25 for rotating the godet roller 24. Having. Note that the first roller device 5a and / or the second roller device 5b can use a combination of a godet roller and a separate roller.

The yarn traverse device 26 has a traverse mechanism 26 for yarn traverse, and a motor 29 for driving the traverse mechanism 26.

The yarn winding device 7 has spindles 27 and 28 alternately positioned at the yarn winding position by being revolved, and has motors 30 and 31 for rotating the spindles 27 and 28, respectively. . A bobbin on which the yarn is wound is detachably attached to the spindles 27 and 28.

Each of the motors 12, 15, 18, 21,
23, 25, 29, 30, and 31, based on the rotation speed information from the control device 8, the inverters 32, 33, 34, 35, 36, 37, 38, 39, 4,
The drive is controlled by 0.

The spinning apparatus 1 has at least one of a tachometer for detecting the rotation speed of the motor 12, an ammeter for detecting the current of the motor 12, and the like, for the purpose of monitoring a variation in the discharge amount of the molten polymer. Detection means 41 is provided.

The cooling device 2 includes at least one of an air flow meter for detecting the air flow of the cooling air, a pressure gauge for detecting the pressure, and the like for the purpose of monitoring the cooling state of the yarn by detecting a change in the amount of the cooling air. Two detecting means 42 are provided. The cooling device 2
Can be monitored by, for example, a monitoring device described in JP-A-10-158920.

The oil dispensing device 3 includes a flow meter for detecting the flow rate of the oil, a tachometer for detecting the number of rotations of the motor 15, and a current for detecting the current of the motor 15 in order to monitor a change in the amount of the oil applied to the yarn. At least one of detecting means 43 is provided, such as an ammeter for detecting the amount of oil agent adhering to the yarn Y, an adhering amount detector for detecting the amount of oil adhering to the yarn Y. The monitoring of the variation of the applied amount of the oil agent can be performed by, for example, a monitoring device described in Japanese Patent Application Laid-Open No. 9-86795.

The entanglement device 4 detects a change in pressure and flow rate of the pressurized air necessary for the entanglement processing of the yarn Y, and detects a flow rate of the pressurized air for monitoring the degree of entanglement generated in the yarn Y. At least one of detection means 44 is provided, such as a flow meter for detecting the pressure, a pressure gauge for detecting the pressure, and a number of entanglement detector for directly detecting the number of entanglement given to the yarn Y.

The winding device 7 continuously measures the tension of the yarn Y at the time of winding the yarn, issues an alarm when the measured value is out of a preset range, and thereafter continues winding. A tension meter for separating and managing the yarn package Pa formed by taking off from the normal package P and a detecting means 47 formed by a control device thereof are provided. In some cases, it is possible to perform processing such as actively cutting the yarn at the same time as issuing the alarm.However, in many cases, the yarn is continuously wound while recognizing the abnormality. It is desirable to remove the package Pa as an abnormal package Pf in a later step. The tension management is
For example, the monitoring can be performed by a monitoring device described in JP-A-10-324461.

Further, the winding device 7 measures the vibration state of the winding device 7 during the winding operation of the yarn Y, and detects abnormal vibration which is a sign that the winding package is broken for some reason. To monitor the abnormal increase in the vibration value due to the increase in the unbalance amount of the rotary spindle accompanying the increase in the winding amount of the yarn, or to monitor the abnormality of the winding device 7 or the like. At least one detecting means 48 such as a thermometer or a thermometer is provided.

When the detecting means 48 is a vibration detector,
First, the information from the vibration detector is obtained by continuously collecting the vibration value of the winding device 7 several minutes after the yarn switching and arranging the values over time. For this vibration value, a first alarm value of a certain value is set, and a first alarm is issued when the vibration value of the spindle exceeds the value due to the gradually increasing tendency of the vibration value. From this warning, it is understood that the spindle maintenance is necessary, and the winding device 7 is replaced at a convenient time at a short time from the production plan, and the spindle maintenance is performed. Regardless of the thread switching, if an alarm is issued in addition to the periodic measurement, the vibration of the winding device 7 is checked, for example, every 10 to 15 seconds. A second alarm value is set, and if it exceeds the value, the winding device 7 is stopped. The second alarm value is a vibration value that cannot be reached in a normal winding state, and also indicates a sign that an abnormality occurs in the package during winding and a sign that the package collapses during winding. This is a monitoring system that aims to stop the winding device 7 before an accident occurs. The monitoring of the increase in the imbalance of the spindle in the winding device 7 and the monitoring of the abnormal winding of the winding device 7 are performed, for example, in US Pat. No. 5,900,55.
This can be performed by the monitoring device described in the specification of Japanese Patent No.

The control device 8 compares the information sent from each of the detecting means 41 to 46 with predetermined yarn manufacturing conditions and calculates the inverter 3 so as to be in a predetermined range.
2 to 40, and the information sent from each of the detection means 41 to 46 and the information sent from the detection means 47 and 48 and other detection means are compared and calculated with a predetermined abnormal range. It has a function of issuing an abnormal signal when it is determined to be abnormal.

The control unit 8 compares the information sent from each of the detection means 41 to 46 with predetermined yarn production conditions and calculates an inverter 32 so as to be in a predetermined range.
And a thread production condition control device having a function of controlling the control of the information processing apparatus, and information transmitted from the detection means 41 to 46 and information transmitted from the detection means 47 and 48, and other detection means are determined in advance. If it is determined to be abnormal by performing a comparison operation with the determined abnormal range, the apparatus can be divided into two abnormality determining apparatuses having a function of generating an abnormal signal.

The signal information from each of the detection means 41 to 46 described above is sent to the control unit 8 via an analog / digital converter.
And it is determined whether or not it is abnormal.

In the above yarn package manufacturing facility,
Under the operation of each device, the molten polymer spun from the spinneret 10 of the spinning device 1 is cooled in the cooling device 2 to become a solidified yarn Y, and then the yarn Y is turned into the oil applying device 3. After a predetermined amount of the process oil is applied, the confounding device 4 undergoes a confounding process by injecting compressed air. The entangled yarn Y is wound around a first roller device 5a and a second roller device 5b, wound around a bobbin held by a spindle 27 of a winding device 7, and traversed by a traverse mechanism 26. The yarn package P is wound up.

Each of the detection means 41 to 46 described above may be used as a detection means such as a pulse generator and a pulse pickup for controlling the rotation of each motor as one means.

The first roller device 5a and the second roller device 5b described above are provided with a detecting means so that the running yarn take-up speed,
Detects abnormalities such as stretching ratio, sending speed, etc.
A detecting means such as a contact-type tension detector or a non-contact-type tension detector may be provided on the upstream side to detect an abnormality of the winding device 7.

When the above-described abnormality occurs, the information is sequentially sent from the control device 8 to the local controller 9 and the center controller 51.

Next, a description will be given of a yarn package transporting / sorting device provided in the yarn package manufacturing facility with reference to FIG. As shown in FIG.
The information on the abnormal package from the center controller 51 and the information from the center controller 51 are input to the control device 50. Also,
The package transport / sorting device 49 is provided with a sorting / discharging mechanism (not shown) for sorting and discharging abnormal packages.

The yarn packages (all of the normal package P and the abnormal package Pf) manufactured by the yarn package manufacturing equipment shown in FIG. 1 and doffed from the respective winding devices 7 are sorted and packed by the package transfer and sorting device 49. Etc.

The abnormal package P is sent from the center controller 51 to the control device 50 of the package transport sorting device 49.
When the information about f (separation command or the like) is sent, the abnormal package Pf is identified from the packages P being conveyed by the package conveying / sorting device 49, and when the abnormal package Pf comes to a predetermined position, the classification and discharge mechanism is used. (Not shown) is activated to discharge the abnormal package Pf to the abnormal package line, and the abnormal package Pf is separated from the normal package P group.

The sorting / discharging mechanism has a structure in which a conveying roller or the like is pushed out by a cylinder or the like in a direction orthogonal to a traveling direction, a structure in which the inclined package Pf is dropped from the conveying roller, A configuration in which the pressing member protrudes from a direction orthogonal to the traveling direction of the transport roller and the abnormal package Pf falls from above the transport roller can be used, and the configuration is not particularly limited.

[0041]

According to the first or second aspect of the present invention, there is provided a method of manufacturing a yarn package according to the present invention, wherein at least one of the various yarn manufacturing conditions for the yarn in each yarn package manufacturing unit is used. Detecting means for detecting the presence or absence of abnormalities in the two manufacturing conditions, and based on the signal information from the detecting means, it is determined whether the yarn manufacturing conditions are within a preset range or out of the range. Because the control device provided in is to monitor
Abnormal conditions during the production of the yarn package can be monitored at short intervals to confirm the presence or absence of abnormalities, and if any abnormalities are found, the package wound in that state (abnormal package) is transported and sorted. By sending the abnormality information to the control device of the apparatus, the abnormal package can be separated from the normal package group.

For this reason, without installing an abnormal package discriminating device for directly diagnosing an abnormal package,
Such an abnormal package discriminating device is effective only for detecting an abnormality in the external appearance of a package, and is not useful for discriminating abnormalities in the internal structure of the yarn occurring during the yarn forming process. It has been considered difficult to exclude a package having an abnormality from a normal package group. However, according to the present invention, such an abnormal package can be removed and removed based on abnormality information on manufacturing conditions.

According to the yarn package manufacturing method of the present invention described in claim 3, when an abnormality occurs in the manufacturing conditions,
The operation of at least the means determined to be abnormal among the yarn manufacturing units determined to be abnormal according to the type of abnormality is stopped, whereby the yarn package in the yarn winding device is configured so that the yarn is fully filled. It will not be wound up.
Thereby, the winding amount in the abnormal package can be reduced. Such an undertube package can be determined by an appearance inspection, but in the present invention, abnormal information on manufacturing conditions is used to distinguish such an abnormal package from a normal package.

According to the method for manufacturing a yarn package of the present invention described in claim 4, the control device alone is used for the yarn package.
The effect by the above can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram for explaining an embodiment of a yarn package manufacturing facility for implementing the yarn package manufacturing method of the present invention.

[Explanation of symbols]

1: spinning device 2: yarn cooling device 3: oil agent application device 4: yarn entanglement application device 5a: first roller device 5b: second roller device 6: yarn traveling device 7 winding device 8, 50 control device 9 Local controller 10 Base 11,17 Gear pump 12,15,18,21,23,25,29,30,3
1 Motor 13 Cooling Cylinder 14 Fan 16 Nozzle 19 Entangling Nozzle 20 Compressor 22, 24 Godet Roller 26 Traverse Mechanism 27, 28 Spindle 32, 33, 34, 35, 36, 37, 38, 39, 4
0 Inverter 41, 42, 43, 44, 45, 46, 47, 48 Detecting means 49 Package transport and sorting device 51 Center controller P Normal package Pf Abnormal package

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hideyuki Nakahara 1-1-1 Sonoyama, Otsu City, Shiga Prefecture Toray Engineering Co., Ltd. F-term (reference) 4L045 AA05 BA03 DA09 DA23 DA48 DB07 DC11 DC36 DC40

Claims (4)

[Claims] (1) The production unit for the yarn package is (a)
-1) a spinning means for discharging the molten polymer to form a yarn, (a-2) a yarn cooling means for cooling and solidifying the yarn formed by the spinning means by cooling air, and (a- 3)
And (a-4) passing the yarn formed by the spinning means through the yarn cooling means and the oil applying means. (A-5) a yarn traversing means for traversing a yarn made to travel by the yarn traveling means at the downstream side of the yarn traveling means. Means; (a-6) a yarn winding means for forming a winding yarn package on a rotating bobbin for rotating the yarn traversed by the yarn traversing means;
(a-7) a yarn production condition control means provided in at least one of the above means and controlling the yarn production conditions of the means within a predetermined range; and (a-8) each of the above means The information sent from the means for monitoring the yarn manufacturing conditions and the information sent from other abnormality monitoring means are compared with a predetermined abnormality range, and an abnormality signal is issued when an abnormality is detected. (B) a yarn package manufacturing facility in which a plurality of the yarn package manufacturing units are arranged in parallel, and (c) the yarn packages formed by the yarn package manufacturing units. A method of manufacturing a yarn package for manufacturing a yarn package by transferring a plurality of yarn packages to be doffed from the winding means to a collection place and collecting the collected yarn packages, wherein (d)
Among the plurality of yarn packages doffed by the respective yarn winding units, the yarn package doffed by the yarn winding unit of the yarn package manufacturing unit from which the abnormality determination unit has issued the abnormality signal is selected. A method of manufacturing a yarn package, wherein the abnormal package is separated from a normal package before or at the collection site of the yarn package. 2. The abnormality determined by the abnormality determination means includes an abnormality in a rotation speed of a drive motor provided for driving the means described in (a-1) to (a-6) or an abnormality in inverter current. Abnormality of the cooling air volume of the means described in (a-2), Abnormality of the amount of oil applied to the yarn by the means of (a-3), Winding of the yarn by the means of (a-6) The method for manufacturing a yarn package according to claim 1, wherein the method is at least one of abnormality in tension and abnormality in vibration of the means described in (a-6). 3. The operation of at least one of the yarn manufacturing units determined to be abnormal according to the type of the abnormality when the abnormality determined by the abnormality determining means corresponds to a preset form. Claim 1
Or the method for producing a yarn package according to item 2. 4. The yarn production condition control means according to (a-8),
The information sent from the means for monitoring the yarn production conditions of each means of the means and the information sent from other abnormality monitoring means are compared with a predetermined abnormality range, and if an abnormality is found, The method for producing a yarn package according to any one of claims 1 to 3, having a function of generating an abnormal signal.