JPH05279909A - Method for detection of oil adhered to fiber and device therefor - Google Patents

Abstract

PURPOSE:To provide the device for accurately monitoring the oiling state of a running fiber in on-line by detecting the oiling state of the fiber, when an oil is applied to the running fiber. CONSTITUTION:A fiber-collecting guide 3 connected to each tension meter 4 in response to the number of spindles is disposed, and each tension meter 4 is connected to a recorder 6 and a controller 7 through an amplifier 5. Further, the controller 7 is connected to an alarm 7, and when the tension of the fiber exceeds the limited allowance of the corresponding oil-adhered state, the alarm 8 is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when applying an oil agent to a running yarn in a process such as spinning, drawing or rewinding a synthetic fiber, accurately monitors it online by detecting the applied state of the oil agent. A method and apparatus.

[0002]

2. Description of the Related Art A yarn made of synthetic fiber multifilament is generally provided with an oil agent in view of process stability, antistatic property and quality. In recent years, as the yarn running speed during yarn making has greatly increased, stains due to frictional problems between the yarn and the yarn guides, fluffing problems, and single yarn winding around the rotating body are likely to occur. Is becoming

In order to prevent these troubles, it is strongly desired to apply the oil agent uniformly. Therefore,
In order to apply this uniform amount of oil agent, a guide oil supply system has been used for high-speed spinning in place of the roller oil supply system.

However, in this case, various methods for controlling the state of application of the oil agent, which is an important control item, have been studied so far, but since the control of each weight is independent control, the number thereof is extremely large and the accuracy is still high. It is said to be a very difficult technology because there is nothing.

The conventional method of controlling the applied amount of the oil agent is to measure the amount of the applied oil agent in a batch method by the gravimetric method, determine the applying condition of the oil agent based on the result, and to determine the condition until the next measurement result is obtained. The method of keeping the conditions constant was adopted. Therefore, there is a problem that if an unexpected change occurs in the amount of applied oil, it cannot be easily dealt with. Here, the gravimetric method is the most basic method of determining the adhered state of the oil agent by the difference between the weight of the oil agent attached to the skein sampled thread and the weight of the skein sampled thread agent after cleaning the oil agent. This is a very time consuming method.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional oil agent application management, and accurately detects the oil agent adhesion unevenness of a running yarn in a spinning process or the like. In addition to the optimization of the shape of the oil agent application nozzle and the recent increase in the number of spindles, the present invention provides a method and apparatus capable of centrally managing the oil agent application state.

[0007]

That is, the present invention is a method for monitoring the oil applied to a running yarn online, in which the tension of the running yarn is taken out and the oil applying state of the yarn is checked according to the variation. A method for detecting an adhering oil agent on a running yarn, which is characterized by detecting, and a yarn, characterized in that a tensiometer is connected to a spindle of a yarn focusing guide and an alarm device interlocking with the tensiometer is provided on the tensiometer. This is a device for detecting the oil adhered to the strip.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. FIG. 1 is a process explanatory view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing another embodiment, and FIG. 3 shows a correlation between a yarn tension and an oil adhesion amount for explaining the embodiment of the present invention. It is a relationship diagram.

In the figure, a yarn y discharged from a spinning pack is cooled and solidified by a spinning cylinder 1 and an oil agent is applied by a guide oil supply device 2 (also called a metering oiling, a metering nozzle, a metering head system, etc.), The yarn collecting guide 3 disposed somewhat rearward of the guide oiling device 2 so as to have an appropriate tension is slightly inclined and then passes through the yarn collecting guide 3 and is wound up through a godet roller or the like (not shown).

The yarn focusing guide 3 may be hook-shaped, ring-shaped, snell-shaped, or the like, but any type may be used as long as the running property of the yarn is stable and tension measurement does not change greatly. it can. The support shaft 3 is attached to the yarn focusing guide 3.
A tensiometer 4 is connected to the rear end of a, and the tension in the axial direction of the support shaft 3a is electrically converted and taken out, and a recorder 5 is connected via an amplifier 5 (or a dynamic strain gauge) connected to the tensiometer 4. 6 so that the tension status can be continuously monitored at all times.

Here, if there is unevenness or variation in the adherence of the oil agent on the thread y to which the oil agent is applied by the guide oil supply device 2, the yarn y which is traveling in contact with the thread focusing guide 3 is correspondingly dealt with. The frictional force between the guides 3 changes, and the state of the change is continuously recorded. In this case, there is a correlation that when the amount of the applied oil agent is small, the frictional force is large and the tension is correspondingly large, and when the amount is large, the tension is low. Therefore, if the allowable limit width of the tension fluctuation is determined to be an appropriate value according to the conditions of use, if the set allowable limit width is exceeded, it may be processed as an abnormality.

As a processing method, the permissible limit width is set in the recorder, and when the measured value exceeds the limit value, the alarm device is connected to the alarm device so as to operate, or a separate controller is provided. An alarm or display may be given, or the yarn cutting device may be interlocked with the yarn cutting device and the yarn cutting may be performed at the same time when an abnormality occurs.

FIG. 2 is a schematic diagram showing a system for monitoring the state of attachment of the oil agent in the multi-threaded state. Thread converging guides 3 connected to tensiometers 4 are provided corresponding to the number of spindles, and each tensiometer 4 is Each of them is connected to a recorder 6 and a controller 7 via an amplifier 5, and the controller 7 is connected to an alarm device 8 and the alarm device 8 is activated when the thread tension exceeds a limit allowable value of the oil agent adhesion state (correlation). Is set to work.

FIG. 3 shows a polyester denier yarn 75 denier 3
6 filaments spinning speed 5000 m / min, oil viscosity 1
It shows the relationship between the tension state and the applied state of the oil agent when the oil agent supply rate is 00 cp / 1.8 cc / min. The tension value level increases as the oil agent attachment rate decreases, and the bubble level in the oil agent supply system increases. The tension fluctuation value increases with respect to the occurrence (point A) and the vibration of the winding frame (point B). In this case, the limit permissible value of the oil agent adhesion state is that the tension fluctuation width is within 6 g, and if it exceeds this range, oil agent adhesion unevenness occurs, so if it is out of this range value, it is determined to be abnormal. Since such a limit permissible value changes depending on various factors such as the yarn speed, the yarn fineness, the oil agent viscosity, and the oil agent supply amount, an appropriate value may be determined in advance in accordance with the conditions of use.

As is clear from this figure, in order to clearly know the applied state of the oil agent, it is necessary to consider both the tension level and the tension fluctuation range, and it is easy to control the applied state of the oil agent. In addition, it is possible to suppress uneven dyeing of yarns and fluffs, and to achieve stable production.

In this example, a tensiometer which applies tension in the axial direction of the focusing guide and detects the tension is shown. However, depending on the method of contact with the yarn, this tension meter is used to take out tension by applying lateral tension. Can use a tensiometer corresponding to this.

[0017]

As described above, according to the present invention, it is possible to accurately grasp the state of the adhered oil on the running yarns online, and in particular, it becomes extremely easy to manage the increase in the number of spindles and the occurrence of an abnormality occurs. The remarkable effect that it becomes possible to promptly and appropriately deal with

[Brief description of drawings]

FIG. 1 is a process explanatory view showing an example of the present invention.

FIG. 2 is an explanatory diagram showing another embodiment.

FIG. 3 is a relationship diagram of a yarn tension and an oil application amount for explaining the operation of the present invention.

[Explanation of symbols]

 1 Spinneret 2 Guide Lubrication Device 3 Yarn Focusing Guide 4 Tension Meter 5 Amplifier 6 Recorder 8 Alarm

Claims (2)

[Claims] 1. A method for online monitoring of an oil agent applied to a running yarn, wherein the tension of the running yarn is taken out and the applied state of the oil agent to the yarn is detected according to the variation. A method for detecting adhered oil. 2. A device for detecting a thread-adhering oil agent, wherein a tension meter is connected to a support shaft of the yarn focusing guide and an alarm device interlocking with the tension meter is provided on the tension meter.