JPS60110968A - Feather detector of running yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuzz detection device that can accurately detect fuzz without contacting the running yarn.

<Prior Art> Conventional prior fluff detection devices mainly include those using capacitive sensors and those using optical sensors.

A sensor using a static-response type sensor is designed to prevent static electricity from forming when a running thread passes through a capacitance sensor with a hollow structure to prevent the thread from forming a valley due to fuzz. It detects changes in capacitance as electrical signals. In the optical sensor, a light emitting part and a light receiving device such as a photodiode are arranged inside the structure of the optical sensor, so that when the running yarn passes between the light emitting part and the light receiving part of the sensor, The fuzz is detected by detecting changes in the light receiving inuyama (with and without fuzz). .

However, the conventional device described above determines the standard volume of the yarn of the running yarn in advance, compares the volume of the yarn of the running yarn actually measured by a sensor with the reference volume, and detects the size of the fluff and the number of fluff. As a result, there were the following problems.

In other words, in order to detect the fluff of the traveling yarn by passing the first yarn through the hollow structure of the sensor and detecting the volume of the yarn, the yarn finishing agent and the fluff are added to the hollow (f'I) part of the sensor. There is a risk that broken pieces may accumulate, making it difficult to detect fluff with good stability.Furthermore, in these conventional devices, in order to prevent the vibration of the running yarn in the hollow structure of the sensor, Guides are installed on both sides, and if some kind of splicing part is required to regulate the vibration of the running yarn, which may adversely affect the running yarn, then a non-contact fuzz detection device is recommended. It was wanted.

<Overview of the Invention> It is an object of the present invention to solve the above-mentioned drawbacks and to provide a running yarn fuzz detection device that can stably and accurately detect fuzz without contacting the running yarn.

In order to achieve this object, according to the fuzz detection device of the present invention, a fuzz detection needle is arranged so as to intersect the running path of the running yarn, and the fuzz detection needle does not come into contact with the normal running yarn. A vibration detector is provided which is brought into contact with the fluff to be detected and detects vibrations of the fluff detection needle.

The fluff of the running yarn comes into contact with the fluff detection needle, and this vibration is detected as fluff by the vibration detector. The fuzz detection needle is placed close to the normally running yarn without contacting it, so it has the advantage of not causing any negative effects on the yarn and preventing yarn finishing agents, broken fuzz, etc. from accumulating on the detector. There is. Furthermore, since the fuzz itself is detected, the number of fuzz can be detected accurately.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In FIG. 1, the lead 1 is stretched by, for example, a stretching roll 2, passed through a yarn support kite 3, and wound onto a bobbin 4. The bobbin 41i is rotated many times by the drive roll 5. The bobbin 4, drive roll 5, and traverse 6 are each attached to a winder frame 7. The main frame 8 includes a drawing roll 2, a yarn support guide 3, and a winder frame 7.
or 1^1 is determined. The yarn 1 is passed from the drawing roll 2 to the bobbin 4.
Drive to.

In this invention, a fuzz detection needle 11 is arranged between the drawing roll 2 and the bobbin 4, intersecting the running path of the running yarn I. As shown in FIG. 2, the fluff detection needle 11 is located outside the natural vibration width of the normally running yarn 1 without fluff, and is located on the running path of the fluff to be detected on the yarn 1. It is desirable that the distance between the yarn 1 and the fuzz detection needle 11 when the prefecture 1 is not running is, for example, approximately 0.5 M to 20 mm. A
If A is made too small, the normal traveling yarn 1 will come into contact with the fuzz detection needle 11 and pick up noise, and if A is made too large, small fuzz will not be detected. As the fuzz detection needle 11, a wire made of elastic gold ingot, such as a piano wire, is preferable, and a wire made of classical material or the like can also be used.

As shown in FIG. 3, a vibration detector 12 for detecting vibrations of the fluff detection needle 11 is attached to the fluff detection needle 11. For example, one end of the fluff detection needle 11 is identified to a detection needle support 13 with a screw 14, and a vibration detector 12 is attached to the detection needle support 13. For example, an acceleration detector can be used as the low motion detector 12. For installation, the vibration detector 12 is attached to the metal fitting 15 using the mounting screw 16, and this installation is done by attaching the vibration detector 12 to the main frame 8 using the mounting screw 17 attached to the metal fitting 15.
Fixed. At this time, the fluff detection needle 11 is 111!1
``Holded horizontally, yarn 1 is run vertically.

The detection output of the vibration detector 12 indicates that the running yarn 1 does not come into contact with the fluff detection needle 11 when the running yarn 1 is a normal yarn without fluff or when the fluff is smaller than what should be detected. However, if there is a fluff of a size that should be detected on the running yarn 1, the fluff comes into contact with the fluff detection needle 11, and the fluff detection needle 11 is moved by this contact, and the vibration is transmitted to the fluff detection needle 11. Furi tied up! It is detected by the IIIJ detector 12 as a stain signal. Therefore, the presence of υ fluff can be detected by the output of the vibration detector 12.

<Experimental example> Immediately after the stretching roll of 1890 denier nylon 66 in the spinning, stretching and winding process, the fuzz detection needle 1 was inserted as shown in FIG.
A piano wire with a diameter of 0.711 m and a length of 13 tM was provided as the vibration detector 12, and an acceleration pickup type 2 P51S manufactured by Fuji Ceramics Co., Ltd. was installed as the vibration detector 12, and its output was connected to a preamplifier model MD40 manufactured by Sun Electronics Co., Ltd.
5P manually and set the distance #A between the running yarn 1 and the fuzz detection needle 11.
was placed in the third corner.

The running speed of the yarn 1 was 4 m/8, and the results were shown in Figures 4 and 5. Figure 5 shows the results when fuzz was artificially generated, and Figure 4 shows the results determined under normal conditions.

The results of investigating whether the number of fuzz detected by the output of the vibration detector 12 is accurate are shown below.

The ink test involves placing a chain dipped in ink in the same position as the fuzz detection needle, applying ink to the fuzz, and then artificially untying the bobbin with a winder. This is the counted value.

Measurements made using the device according to the invention yielded results equivalent to actual measurements. It was confirmed that the device of this invention can accurately detect fluff.

As mentioned above, with this method, fluff can be detected accurately without contact with normal yarns. In this way, it is a non-contact method, and since the yarn is not passed through the hollow structure, there is no risk of yarn finishing agents, broken fluff, etc. accumulating in the hollow structure, and fluff can be detected stably. Highly reliable. Furthermore, it is not essential to provide guides at the entrance and exit of the hollow structure to prevent the vibration of the traveling yarn, and since the traveling direction is non-contact, there is no risk of adverse effects on the yarn. Moreover, even fluff of about 3H or more can be detected without fail.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the installed state of the fluff detection device according to the present invention, a perspective view showing the relationship between the 21st fluff detection needle and the front of the vehicle, and FIG. 3 is an example of the fluff detection device according to the present invention. The front view, Figures 4 and 5 are each from this E! J4
FIG. 2 is a diagram showing an example of a fuzz detection device using the device. 1: Running thread, 11: Fuzzing needle, 12: Vibration detector,
13: Detection needle support. Patent Applicant Asahi Kasei Kogyo Co., Ltd. Agent Himi Kusano 1 Figure yP 3 Figure O 4 Draft procedure amendment (method) March 9, 1980 1, Indication of case Patent application 1982-2-146672, Title of the invention Relation between the running yarn fuzz detection device 8 and the amended case Patent applicant Asahi Kasei Kogyo Co., Ltd. 4, agent Wakan Building 5, 4-2-21 Shinjuku, Shinjuku-ku, Tokyo Date of amendment order 1982 February 28th 6, Subject of amendment Description 7, Contents of amendment

Claims (1)

[Claims] (1) A fluff detection needle that is arranged so as to intersect with the running path of the running yarn, approaches the normal running yarn, and comes into contact with the detected fluff of the running yarn, and the detected fluff of the running yarn. A fuzz detection device for running yarn coaxial with a vibration detector that detects vibrations of the fuzz detection needle generated by contact between the fuzz and the fuzz detection needle as fuzz to be detected.