JPH063967U - Winder defective yarn detection device - Google Patents

Abstract

(57) [Summary] [Purpose] Immediately when the yarn end on the package side and / or the yarn supplying side becomes double in the winding process, or when the joint by the automatic yarn joining device becomes defective. Detect and disconnect. In an automatic winder having a first detection device (5) for detecting a defective yarn in a yarn traveling path (7) between a yarn feeding side bobbin (2) and a yarn joining device (6), the yarn joining device ( A second detection device (9) for detecting defective yarn is provided in the yarn traveling path (7) between the package (6) and the package (10).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a winder equipped with an automatic yarn splicing device, which detects defective yarn splicing or twin winding, and prevents defective yarn from occurring due to these factors.

[0002]

[Prior art]

 As described in JP-A-1-172184 and the like, in the automatic winder, the yarn end on the package side and the yarn end on the yarn supplying side bobbin are automatically spliced by a yarn splicing device. To explain the behavior of this yarn joining operation, the package side yarn end is sucked and held by the suction mouth and guided into the yarn joining device. On the other hand, the yarn end of the yarn supplying side bobbin is sucked and held by the intermediate pipe and introduced into the yarn splicing device. Then, the yarn between the suction mouth and the yarn splicing device and the yarn between the splicing pipe and the yarn splicing device are cut by the cutter arranged in the yarn splicing device, and the yarn is spliced by the yarn splicing device, and the seam portion is spread over a predetermined length. Formed.

In the winder described above, the yarn wound in the normal rewand process is pulled out from the bobbin on the yarn feeding side, passes the upper part of the yarn joining device while being constantly checked by the detecting device, and is actively rotated. It is taken up by the take-up drum. At this time, if a detection device (slab catcher) arranged in the yarn traveling path between the yarn splicing device and the yarn feeding side bobbin detects a yarn cut during the rewand or an abnormality such as a slab, a straight line is detected in the case of a yarn cut. Then, a yarn splicing command is issued and spliced by the yarn splicing device. In the case of slab detection, the yarn is once cut by a cutter, then a yarn splicing command is issued and the yarn splicing device performs splicing.

[0004]

[Problems to be solved by the device]

 However, in the yarn splicing operation, when the yarn splicing command is issued from the detection device, the winding operation is stopped, and when the suction mouth continuously sucks the yarn end on the package side, normally one yarn end is Suction, and the splicing pipe sucks the yarn end of the bobbin on the yarn feeding side, and the yarn splicing is performed by the yarn splicing device to return to the normal rewand state. However, depending on the winding mode of the yarn end on the package side, It may happen that the yarn ends cannot be sucked or that two or more yarns are sucked and pulled out.

On the other hand, considering the supply state of the yarn supplying side bobbin, when the rewand from the bobbin is completed and the yarn becomes empty, a new yarn supplying side bobbin is inserted into the bobbin supporting peck and the yarn end is Although it is sucked into the relay pipe, sometimes the rewand is not completed and the old and new bobbins may be replaced while the remaining yarn remains on the old yarn feeding side bobbin. In such a case, the yarn end of the old bobbin may lie near the yarn traveling path, and the yarn of the old bobbin may become entangled with the yarn of the old bobbin, resulting in the twinning of the yarn. In such a situation, the yarn from the new bobbin passes through the detection device and the yarn from the old bobbin comes off from the detection device in most cases, and the detection device does not detect the existence of twins. However, the defective yarn based on this is continuously wound up on the package.

[0006] A defective yarn caused by the fact that two yarn ends on the package side are sucked by the suction mouth or the rewand yarn on the yarn supplying side bobbin becomes two twins is a defect between the yarn joining device and the supplying side bobbin. As described above, the conventional device provided with the detection device is not sensed, and the yarn is spliced into the package while being spliced by the yarn splicing device, which is a big problem in using the automatic winder. A first object of the present invention is that the yarn end on the package side and / or the yarn supplying side is a yarn end of two twins, and even if these yarn ends are spliced by a yarn splicing device, this is immediately detected to generate a defective yarn. The second purpose is to detect immediately when the yarn splicing device does not operate normally and the joint is defective.

[0007]

Means for Solving the Problems In order to achieve the above object, the present invention has the following configuration. That is, in an automatic winder equipped with a first detecting device for detecting defective yarn in the yarn traveling path between the yarn supplying side bobbin and the yarn joining device, the automatic winder for detecting defective yarn joining device is provided in the yarn traveling path between the yarn joining device and the package. The configuration is characterized in that a second detection device is provided.

[0008]

[Action]

 In the present invention, since the second detecting device is provided in the yarn traveling path between the yarn joining device and the winding package, the yarn spliced by the yarn joining device always passes through the second detecting device and the winding package. And the defective portion that has occurred after the first detection device, that is, the defective knot due to the yarn splicing device and the twine winding that combines with the rewand yarn from another bobbin are completely detected, and the yarn layer of the normal yarn is detected. Completely prevent the trouble that defective yarn is mixed in. In addition, the detection device used at present determines its quality based on the shape of the thread that has passed through because of its structure. However, there are various types of defective yarns, for example, defective yarn knots have a flower knot shape, a ring shape, a butterfly shape, and the like. In the conventional device having one detection device on the yarn traveling path, This may be overlooked. However, in the device of the present invention, the first detection device and the second detection device are arranged along the yarn traveling path, so that there is a difference in the sensing time of the detection device, and The twisting causes the shape of the defective yarn to rotate, and even if it is overlooked by the first detector, it will always be detected by the second detector.

[0009]

【Example】

 The present invention will be described in detail below with reference to the embodiment shown in FIG. The figure is a perspective view of a unit unit of a winder equipped with the device of the present invention. As shown in the figure, the thread (3) of the silk bobbin feeding side bobbin (2) inserted in the peck (1) is unwound upward, and is made up of a balloon breaker (not shown) and an electronic yarn. One detection device (5), a knotting type yarn splicing device (6) and the like are passed through a yarn traveling path (7) having core constituent elements. In the conventional mechanism, the yarn (3) exiting the yarn joining device (6) is immediately taken up by the winding drum (8) which positively rotates as it is, but in the device of the embodiment, the change of the light quantity was used. A second detection device (9) consisting of a photoelectric type or an electrostatic type electronic yarn clearer utilizing a change in electrostatic capacity is installed between the yarn joining device (6) and the package (10). .

In the above-mentioned embodiment, the same type of electronic yarn clearer is used as both the first detecting device (5) and the second detecting device (9), but either one or both of them is of the constant gap type. Alternatively, it may be changed to a gap-changing type mechanical yarn clearer. The second detecting device (9) is always installed after passing through the yarn joining device (6) (in the continuous winding process, the yarn passes above the yarn joining device (6)). Therefore, even if both the first detecting device (5) and the second detecting device (9) are provided in front of the yarn joining device (6), the object of the present invention cannot be achieved.

In the device of the present invention of the above-mentioned embodiment, not only when the yarn end of the package side is pulled out by two openings, but the joint is too large due to the malfunction of the yarn splicing device (6), Also in the case of the true child, the second detecting device (9) immediately detects this, and the yarn splicing command is again issued and the yarn is spliced again, so that the defective yarn is never caught in the yarn layer of the normal yarn.

[0012]

[Effect of device]

 The defective yarn detecting device according to the present invention has a simple structure in which the first detecting device and the second detecting device are provided in two stages along the yarn traveling path, and although the implementation cost is low, it is described in the beginning. It has the effect of completely solving the problem.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

[Explanation of Codes] (1) Peck (2) Supply side bobbin (3) Thread (4) Suction mouth (5) First detection device (6) Yarn splicing device (7) Travel path (8) Winding drum (9) ) Second detection device (10) Package

Claims (1)

[Scope of utility model registration request] 1. A first detecting device (5) for detecting a defective yarn in a yarn traveling path (7) between a bobbin (2) on the yarn supplying side and a yarn joining device (6).
In the automatic winder equipped with the above, the yarn joining device (6)
A defective yarn detecting device for a winder, characterized in that a second detecting device (9) for detecting defective yarn is provided in the yarn traveling path (7) between the package and the package (10).