JPS5940364Y2 - Yarn package characteristic analysis device - Google Patents

Description

[Detailed description of the invention] This invention is a yarn package characteristic analysis device that analyzes the characteristics of the yarn package by measuring the tension behavior of the yarn unwound from the package when the yarn is unwound from the wound yarn package. Regarding.

Conventionally, the means and methods for winding yarn produced in the textile industry have been studied in detail, but when the yarn is unwound and used from the wound yarn package, it is unclear whether the yarn package is suitable for the process. There has been almost no study of the yarn package characteristics to determine in advance, that is, an analysis of the characteristics of the yarn package itself.

As a result, problems that could have been prevented if the characteristics of the yarn package had been known in advance appear as defects in the product during processing, and it currently takes a great deal of time to investigate the cause.

In normal high-level processing, when unwinding yarn from a yarn package cage, a yarn breakage detector or abnormal tension detector is installed in the yarn path through which the yarn unwound from the package passes. If thread breakage or tension becomes abnormally high, the thread supply will be stopped by a signal from the above-mentioned detector, but a mechanism is provided to stop the device itself to prevent product defects and protect the device. I'm trying to do that.

However, these mechanisms are
The purpose is to stop the thread, and it does not have the function of quantitatively or as a pattern to understand the fluctuations in tension in both normal and abnormal states when the thread is unwound from the thread package cage. Therefore, the above-mentioned known mechanism does not allow for the characteristic analysis of yarn packages.

The purpose of the present invention is to improve the defects of the prior art as described above, and to prevent fatal defects from occurring in high-order processed products at the stage when the yarn is wound up into a package and before the package is supplied to high-order processing. A yarn package analysis device for examining in advance whether or not the problem will occur, or a yarn package analysis device for exploring and evaluating various winding conditions to manufacture yarn packages suitable for high-order processing. We aim to provide the following.

The present invention is distantly related to the above object and consists of the following configuration.

That is, a guide for regulating the ballooning of the yarn unwound from the yarn package cage, a yarn pulling means for continuously pulling out the yarn from the tension detector package for detecting the tension of the yarn traveling while being unwound, A yarn package characteristic analysis device comprising: a yarn pulling means for taking over the yarn sent out from the yarn pulling means; and a recorder for recording the tension signal detected by the tension detector as a quantity or pattern. be.

Further, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of a yarn package characteristic analysis device according to the present invention.

In FIG. 1, 1 is a thread package, and 2 is an element storage box.

The yarn Y unwound from the yarn package 1 is guided to a tension detector 4 through a guide 3 for regulating ballooning.

The yarn Y is actively pulled out by the yarn pulling means 5, and the yarn Y sent out from the yarn pulling means 5 is discharged via the yarn pulling means 6.

The yarn drawing means 5 is composed of a roller 7 and a separate roller 8 driven by a motor, and a nip roller (not shown) is provided in contact with the roller 7 as required.

After the yarn is wound around the roller 7 and the separate roller 8 several times, it is continuously unwound from the package 1 at a constant speed by actively rotating the roller 7 at a constant speed, and then sent out from the yarn pulling means 5. After being actively pulled off by the yarn pulling means 6 (air sucker in FIG. 1), the yarn is discharged into a container (not shown) as waste yarn.

A tension detector 4 is provided between the guide 3 and the yarn pulling means 5, and this tension detector 4 detects the tension of the yarn Y that is unwound from the yarn package 1 and is continuously pulled out by the yarn pulling means 5. is continuously detected, and the tension signal obtained by the tension detector 4 is electrically processed and then recorded as a quantity or pattern by the recorder 9.

In Fig. 1, the guide 3 is detachable and can be replaced with one of any material and shape, and the thread package 1
It is desirable that the distance between the guide 3 and the guide 3 be movable so that the distance between the guide 3 and the guide 3 can be changed as desired.

In FIG. 1, 10 is a knob for adjusting the rotation speed of the roller 7 of the thread pulling means 5, and by adjusting this,
An analysis of the yarn package properties under the desired yarn withdrawal speed is made.

The knob 11 is a knob for adjusting the range and gain of the tension detector 4 and the recorder 9.

17 is a push button for selecting the chart speed of the recorder 9.

15 is a power switch, and 16 is a manual switch for the recorder.

FIG. 2 is a perspective view of a model showing the main parts of the tension detector shown in FIG. 1.

The tension detector 4 is provided with a swinging lever 14 having a strain gauge 12 attached between two fixed pins 13 and 13', and allows the running thread Y to pass through the thread path shown in FIG. The swinging lever 14 is bent against the elasticity of the lever by the tension of the lever, and the strain gauge 12 detects the placement caused by the thread tension of the swinging lever 14, and the tension signal generated at the strain gauge 12 is detected by the strain gauge 12. The tension detector 4 and the recorder 9 are known in the art, and are used to measure the magnitude of the unwinding tension of the package to be measured and the tension of the take-up means. Appropriate selection is made depending on speed, etc.

Further, the thread drawing means 5 used in the present invention preferably has a function of drawing out the thread at a constant speed, and is preferably equipped with a variable speed mechanism.

This is because if it is necessary to change the take-up speed, an appropriate speed can be freely selected.

The thread take-off means 6 used in this invention is an ejector, an air
A means such as a soccer ball that smoothly takes over the yarn sent out from the yarn pulling means 5 regardless of its speed may be used, but a commonly used winding machine may also be used.

When using a winder, it is also possible to reuse the yarn used for measurement.

In this case, the winding machine may be driven separately from the thread pulling means 5 or may be driven via the drive source of the thread drawing means.

In addition, the tension detector 4 is made detachable so that it can be freely replaced with a tension detector having an appropriate sensitivity depending on the magnitude of the tension signal detected depending on the type of thread, thickness of the thread, and drawing speed. It is preferable to keep it.

In this way, it is convenient to measure a wide range of yarns such as thick yarns, thin yarns, filament yarns, and spun yarns.

Since the yarn package characteristic analysis device according to the present invention has the above-mentioned configuration, it has the following features.

First, it is possible to continuously measure the unwinding tension of the yarn being unwound from the yarn package and record it as a quantity or pattern, so you can check not only the maximum and minimum values of the unwinding tension, but also the cycle of fluctuations and abnormal tension. It is possible to analyze in detail the characteristics of the yarn package, such as the behavior at the time of occurrence, and it is possible to appropriately set the speed of the unraveled yarn in the subsequent process, the appropriate setting of the distance between the balloon regulation guide and the yarn package, or to proceed to the appropriate subsequent process. It has a great effect on process control, such as the distribution of yarn package.

It is also effective in predicting the occurrence of defects due to abnormalities in unwinding tension when used in sampling inspections at the time of shipment.

Furthermore, it is also effective in examining winding conditions and evaluating winding devices in order to make the yarn package have properties suitable for high-order processing.

Example 1 Using the device shown in Fig. 1, polyester temporary processed yarn 75D
Two types of -24F yarn package were used for testing.

The results obtained are shown in FIG. Figure 3A shows a 1200 yarn package wound using a surface drive type winder with a constant winding angle and without using the ribbon breaker function.
It shows the unwinding tension when unwinding at a speed of m/min.

The blank area indicated by X in Figure 3A is a wind ratio of 4.
In the ribbon-wrapped part of the ribbon, the threads were not pulled out in the correct order during unwinding, and the threads came out in an uneven manner, indicating that thread breakage occurred.

FIG. 3B shows the unwinding tension of a yarn package wound with the ribbon break function activated under the same conditions as FIG. 3A.

In FIG. 3B, the ribbon winding part 9 as shown in FIG. 3A is shown.
．． The uncut state in , F is in the state e, and although there is no uncutness due to unwinding, the ribbon winding section with a wind ratio of 4 has periodic large tension fluctuations, and the unwinding tension is unstable. It shows.

Figure 3C shows a yarn package wound at a constant wind ratio using a spindle drive type winder at 800 m/min.
1000m/min, 1200m/m: shows the unwinding tension at n.

As is clear from Figure 3C, yarn packages wound with a spindle drive method at a constant winding ratio exhibit stable unwinding tension even at high speeds, and in high-order processing, product defects caused by uneven unwinding tension can be avoided. It turns out that this provides a very easy-to-use package.

It has been found that this package is particularly suitable for weft yarns for the first tagetre and the first yarn, which are unwound at high speed.

Example 2 The unwinding tension of a 50D-13F polyester filament yarn was measured.

The results obtained are shown in FIG.

Figure 4A shows L = 100mm when the distance between the head of the pirn and the fixed guide is L = 300m, and Figure 4B shows L = 300m.
In Fig. 4C, L = 600 min, and the unwinding speed was 800 m/min.

As is clear from the results in Figure 4, even at the same unwinding speed, the unwinding tension varies greatly depending on the size of ballooning during unwinding. It has been found that if not selected, there is a possibility that high-order processed products will have defects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a yarn package unwinding tension measuring device according to the present invention. FIG. 2 is a perspective view showing an example of a tension detector used in the present invention. Figure 3 shows the unwinding tension of the yarn package of polyester false twisted yarn 70D-24F measured using the apparatus according to the present invention, and Figure 3A shows the unwinding tension of the yarn package of polyester false twisted yarn 70D-24F measured using the device according to the present invention. Figure 3B shows the unwinding tension of a package wound without any action, and Figure 3C shows the unwinding tension of a yarn package wound with the ribbon break function activated under the conditions shown in Figure 3A. The unwinding tension of a yarn package wound at a constant ratio is shown. Figure 4 shows the unwinding tension of pirn of 50D-13F polyester yarn. Figure 4A shows the distance between the pirn head and the fixed guide is 100mm, Figure 4B is 300mm, and Figure 4C is 600mm. The unwinding tensions are shown in the following cases. DESCRIPTION OF SYMBOLS 1... Thread package cage, 2... Element storage box body, 3... Guide, 4... Tension detector, 5... Bent thread pulling means, 6... Thread take-off means,
9...Recorder, Y...quantity system.

Claims (1)

[Scope of utility model registration request] A guide for regulating ballooning of the yarn unwound from the yarn package cage, a tension detector for detecting the tension of the yarn running while being unwound, a yarn pulling means for continuously pulling out the yarn from the package, and a yarn. A yarn package characteristic analysis device comprising a yarn pulling means for taking over the yarn sent out from the pulling means and a recorder for recording the tension signal detected by the tension detector as a quantity or pattern.