JPH0633136B2 - Winder doffing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a doffing method for a winder, and in particular, a package formed by winding the yarn delivered from a yarn supplying bobbin has a residual yarn amount of the yarn supplying bobbin. The present invention relates to a winder doffing method that can prevent the rolls from becoming full at the minimum.

[Prior Art] In general, a yarn supplying bobbin conveyed from a spinning machine to a winder is wound on an upper part of the winder to form a package, and when the package reaches a full winding, it is doffed and discharged from the winder.

Particularly, in a winder, a yarn is wound from a yarn supplying bobbin to form a package, and a tension device, a slab catcher, a yarn joining device, and a package are contacted on the yarn supplying path of the yarn delivered from the yarn supplying bobbin. A rotary drum or the like for rotating and driving the same is provided, and only the yarn held at a constant quality is supplied to the package located at the end portion of the yarn supply path. A full-roll package that has reached a certain winding amount is fried by a doffing device on the upper part of the winder and carried out from the winder.

[Problems to be Solved by the Invention] When doffing a full-roll package, first, the package reaches full roll and the full-roll signal is transmitted.

When the rotation drum stops due to this full winding signal and the winding of the yarn stops, the yarn is wound in a continuous state between the yarn supplying bobbin and the package, and the yarn thus wound up doffs the package. Be cut by a doffing device.
Therefore, the yarn supplying bobbin and the full winding package are cut and separated from each other, and the separated full winding package is carried out from the upper part of the winder by the doffing device, and after the full winding package is discharged, the upper part of the winder is discharged. Will be supplied with a winding tube for forming a new package.

On the other hand, the yarn supplying bobbin separated from the full-wound package will be fed again to form a new package, but since the yarn is being fed when forming the previous package, the remaining yarn amount of the yarn supplying bobbin is reduced. There may be a small amount, and in this case, the winding amount of the yarn wound around the winding tube to form a new package also decreases.

That is, when the remaining yarn amount of the yarn supplying bobbin is extremely small, when the winding is restarted after the doffing operation is completed, the yarn of the yarn supplying bobbin is immediately wound around the winding tube and becomes an empty bobbin.

Therefore, the empty bobbin that has completed the yarn supply is removed to the winder, the fully wound yarn supplying bobbin is supplied, and the yarn winding of the fully wound yarn supplying bobbin and the package is performed. At the time of this yarn splicing, the yarn end on the package side is sucked by the yarn splicing device to achieve yarn splicing. At this time, since the winding amount of the package is small, all the package yarn is sucked for yarn splicing. It was sometimes done.

Therefore, conventionally, there has been a problem that the yarn splicing operation is performed without the yarn on the package side reaching the yarn splicing device, and the yarn splicing after completion of doffing is not achieved.

The present invention was devised to effectively solve the above problems.

The present invention, when doffing a fully wound package that has reached by winding a yarn from a yarn supplying bobbin, prevents the residual yarn amount of the yarn supplying bobbin from becoming a minimum when the package is fully wound,
An object of the present invention is to provide a winder doffing method capable of smoothly achieving yarn splicing after completion of doffing.

[Means and Actions for Solving Problems] According to the present invention, after the yarn between the full winding package and the yarn supplying bobbin is cut by the full winding signal, the yarn supplying bobbin is replaced with a new full winding supplying bobbin. It is designed such that the full-winding bobbin side thread and the full-winding package side thread are spliced together and then the full-winding package is doffed. This is to prevent the amount of residual yarn from becoming minimum.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the winder main body 1 is loaded with a yarn supplying bobbin 2 which is erected at its lower part, and the yarn supplying bobbin 2 is replaced with a new full winding yarn supplying bobbin 2a. The bobbin changing device 3 is provided, for example, a device 3 including an eject lever for ejecting the bobbin integrated with the tray.

A balloon breaker 6, a yarn feeler 7, and a slab catcher 8 are provided in a yarn feeding path 5 of the yarn 4 fed from the yarn feeding bobbin 2, and a rotary drum 10 that is rotationally driven by a motor 9 is provided. Is provided so as to rotate and drive the package 11 which comes into contact with the yarn and winds the yarn 4 from the yarn supplying bobbin 2.

A cutter 12 is provided in the yarn feeding path 5 and a yarn joining device 13 is provided, and a suction arm 14 and a relay pipe 15 are connected to the yarn joining device 13.

Further, as shown in FIG. 1, a sensor 16 that detects the position of the cradle arm that is displaced as the winding diameter of the package 11 increases to detect full winding is provided near the cradle arm.

A control device 17 is connected to the sensor 16.

This control device 17 sends a signal 19 for cutting the yarn 4 to the cutter 12 by the full winding signal 18 transmitted from the sensor 16.
And a bobbin exchange signal 20 to the bobbin exchange device 3 provided at the lower end of the winder 1. Further, the yarn joining device 13 and the rotary drum motor 9 are connected to the control device 17, and the yarn joining signal 2 is sent to the yarn joining device 13.
1, the drive stop signal 22 is sent to the rotary drum motor 9.

Next, the method of the present invention will be described.

As shown in FIGS. 1 and 3, a yarn supplying bobbin 2 is set at the lower end of the winder 1, and the yarn 4 fed from the yarn supplying bobbin 2 is supplied upward along the yarn supplying path 5. The package 11 is formed on the rotating drum 10.

The package 11 is gradually expanded in diameter, and the sensor 16 outputs a full-roll signal 18 when the package reaches full roll.

The full-roll signal 18 transmitted from the sensor 16 is the control device 17
Is output to the cutter 12 through the yarn cutter, and the cutter 12 cuts the yarn 4 that connects the yarn supplying bobbin 2 and the package 11. Further, the full winding signal 18 is output to the rotary drum motor 9 via the control device 17, and the rotary drum motor 9 stops its rotation.

That is, since the yarn is cut by the full winding signal 18, the yarn of the yarn supplying bobbin 2 is pulled out during the inertial rotation until the drum 10 stops, and the package 1 is further packaged.
It is never rolled up into 1.

Next, after the yarn 4 that connects the yarn supplying bobbin 2 and the package 11 is cut, the yarn supplying bobbin 2 having a small remaining yarn amount is held at the lower end of the winder 1. It will be replaced with a new full-winding bobbin 2a.

First, the bobbin changing signal 20 from the control device 17 reaches the bobbin changing device 3, and the bobbin changing device 3 eliminates the yarn supplying bobbin 2 having a small remaining yarn amount and replaces it with the fully wound yarn supplying bobbin 2.
a is introduced into the lower end of the winder 1.

After the yarn change on the yarn supplying side is performed in this way, the full-winding yarn supplying bobbin 2a and the package 11 are spliced.

In the yarn joining device 13 provided in the yarn feeding path 5, the yarn end of the yarn feeding bobbin 2a suction-held by the relay pipe 15 and
Package 11 sucked and held by suction pipe 14
The yarn ends of the yarns are connected to each other, and the yarn joining is achieved.

After the yarn supplying bobbin 2a and the full winding package 11 are spliced and tied together, the doffing of the full winding package 11 is performed.

Therefore, after the winding is restarted to form the new package 11, the yarn 4 is unwound from the fully wound yarn supplying bobbin 2a, and a smooth yarn supply can be achieved.

As described above, according to the present invention, the yarn 4 between the fully packaged package 11 and the yarn supplying bobbin 2 is cut, and then the yarn supplying bobbin 2 is replaced with a new fully winding yarn supplying bobbin 2a and the package side is replaced again. Since the yarn is spliced with the yarn supplying side, it is possible to prevent the package 11 from being fully wound when the yarn supplying bobbin 2 is extremely small, and it is possible to achieve a smooth yarn splicing after the doffing is completed.

[Effects of the Invention] In short, according to the present invention, after the yarn between the full winding package and the yarn supplying bobbin is cut, the yarn supplying bobbin is replaced with a new full winding supplying bobbin. Since the yarn on the bobbin and the yarn on the package side are spliced together, the doffing is performed, so that the package can be prevented from being fully wound when the remaining yarn amount of the yarn feeding bobbin is minimum, and after the doffing is completed. A smooth splicing can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic view showing a winder according to the present invention, FIG. 2 is a schematic view showing the inside of the winder, and FIG. 3 is a view showing a flow of the method of the present invention. In the figure, 2 is a yarn supplying bobbin, 2a is a full winding yarn supplying bobbin, 11 is a full winding package, and 18 is a full winding signal.

Claims (1)

[Claims] 1. After cutting a yarn between a full winding package and a yarn supplying bobbin by a full winding signal, the yarn supplying bobbin is replaced with a new fully winding yarn supplying bobbin, and A doffing method for a winder, comprising splicing a yarn and a yarn on the side of a full winding package, and then doffing the full winding package.