JP2718868B2 - Inspection method of end of bobbin yarn processing at bobbin end - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for judging the processing result of a lap winding yarn processing for a lap winding yarn (yarn lap winding portion) generated when a transfer tail is formed at the end of a bobbin (particularly a paper tube). For more details, polyester,
The present invention relates to a method for judging an automatic processing result of a lap winding yarn processing for cutting and removing pig bunches of cheese and pan which are yarn windings of synthetic fibers such as polyamide fibers and fixing the remaining pigtails with a seal, tape or the like.

[0002]

2. Description of the Related Art In recent years, when a synthetic fiber yarn such as polyester or polyamide fiber is processed by a draw twisting machine, a draw false twisting machine, or the like, the yarn end at the start of winding between the original yarn bobbins and the yarn end at the end of winding. At the beginning of winding, at the end of the bobbin outside the traverse area,
A so-called transfer tail is formed. (JP-B-57-36233, JP-A-58-119553)
In order to facilitate the transfer tail treatment, the yarn package wound in this manner is provided with a bunch winding (lap winding) or a pig tail formed at the bobbin end while leaving a transfer tail of a fixed length. The lap winding process is completed by fixing the stripped and stripped end of the thread to the end of the bobbin with a tape, a label, a seal (paper) or the like.

[0003]

Conventionally, the stripping process of such a wound portion of a thread has been performed manually. However, in recent years, mechanization and automation have been attempted, and the method disclosed in JP-A-2-43180 has been proposed. Have been. In the processing of the wrapped yarn by these automatic machines, the operation of removing the wrapped yarn and attaching the tape or seal to the pigtail requires deformation and vibration of the seal suction portion of the automatic seal attaching device, vibration with other equipment, and the like. Non-periodic and sudden abnormalities such as poor suction of the seal and displacement of the suction position of the seal due to contact of the seal.

[0004] However, it is difficult to predict an aperiodic and sudden abnormality of the automatic processing apparatus, and an expensive and complicated inspection apparatus must be provided in order to automatically detect the abnormality. there were.

The present invention solves the above-mentioned problem, and determines the processing result from the number of the transfer tails and the position of the seal when the transfer tail is fixed by a seal or the like and the cut and removal of the overlapped yarn of the yarn winding is performed. The purpose of the present invention is to determine the aperiodic and sudden abnormality of the automatic processing device from the processing result of the overlapped yarn processing from the image processing result, particularly from the image processing result of the transfer tail and the seal portion. The purpose is to obtain an effective judgment method.

[0006]

According to the present invention, there is provided a method for inspecting the end of a bobbin thread at the end of a bobbin, which comprises the steps of: An image is taken from the video signal at the end of the bobbin when the overlapped yarn is cut and removed by an automatic machine or the like with respect to the yarn package formed and wound with a tail, and the transfer tail is fixed with a tape or the like. A binarized image is created by the processing, and it is determined whether or not the overlapping winding yarn processing at the bobbin end has been normally performed based on the remaining transfer tail and a sticking position of a seal or a tape for fixing the transfer tail. Then, it is characterized in that a seal sticking abnormality of the automatic seal sticking device is detected from the result.

That is, the present invention provides an image processing apparatus for storing a thread wound material in a light-shielding device such as a dark box for shielding light from disturbance light and obtaining a binarized image of a pigtail portion of the thread package. It is composed of a device for calculating / determining the measured value based on the digitized image and a device for displaying the result of the determination. From the image processing result of the pigtail part, the processing result of the lapping yarn processing is used to determine the non-periodicity of the automatic processing device. In addition, the present invention is a method for inspecting the end of bobbin thread processing at the end of a bobbin, which is characterized by judging a sudden abnormality.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a binarized image of a lap wound yarn at the end of a bobbin for applying the present invention. In the figure, 10 indicates a yarn package, and 20 indicates a seal. The distance 3 to the front end of the seal 20 and the distance 5 to the rear end of the seal 20 are determined by the line sensor A.
The number 6 of pigtails existing between the seal 20 and the yarn package 10 is measured, and the first pigtail, that is, the distance 4 from the yarn package 10 to the farthest pigtail and the width of the first pigtail are measured by the line sensor B. Is measured. Depending on the yarn package 10, if there is no pigtail between the seal 20 and the yarn package 10, the seal 20
There may be no pigtails between the front end and the rear end of the seal 20. Therefore, the distance to the first pigtail 4 ≦
If the distance to the front end of the seal 20 or the distance to the first pigtail 4 ≧ the distance 5 to the rear end of the seal 20 indicates a positional relationship, the seal 20 is not stuck on the pigtail. Judge and seal 20
When the frequency of occurrence of the sticking failure exceeds the upper limit (for example, 2%) of an arbitrary allowable range determined before the start of the device, the repair / adjustment of the sticker 20 is instructed by the display device. Furthermore, the number of pigtails existing between the yarn packages 10 is 6
If the measured value of does not reach an arbitrary reference value (for example, one), it is determined that the pigtail is insufficient and an instruction is given by the display device,
Further, when the frequency of occurrence of the pigtail shortage exceeds an upper limit value (for example, 2%) of an arbitrary allowable range determined before the start of the apparatus, a repair / adjustment of the lap winding yarn cutting apparatus is instructed by a display device. The non-periodic and sudden abnormality of the automatic lapping yarn processing device can be easily and accurately detected by the instruction of the display device described above.

[0009]

According to the present invention, it is possible to easily detect an abnormality in the processing result of the overlapped yarn processing of the automatic processing device and a malfunction of the automatic processing device.

[Brief description of the drawings]

FIG. 1 is a binarized image of a lap wound yarn at the end of a bobbin.

[Explanation of symbols]

 10 Yarn package 20 Seal 1 Scan line of line sensor A 2 Scan line of line sensor B 3 Distance to front end of seal 20 4 Distance to first pigtail 5 Distance to rear end of seal 20 6 Number of pigtails

Claims (1)

(57) [Claims] 1. A yarn package wound at the beginning of winding at the time of yarn switching at the end of a bobbin is overlapped and wound, and a transfer tail is formed on the wound yarn package. For cutting and removing the transfer tail, fixing the transfer tail with a tape or the like, creating a binarized image by image processing from the video signal at the end of the bobbin, and fixing the remaining transfer tail and the transfer tail. Judging from the sticking position of the seal, tape, etc., whether or not the lap winding yarn processing at the end of the bobbin was performed normally,
A method for inspecting the end of a bobbin thread at the end of a bobbin characterized by detecting an abnormal sticking of a seal by an automatic sticking device from the result.