JPS60128165A - Method and device for training yarn - Google Patents

Abstract

PURPOSE:To provide high speed travelling of yarn and train the yarn over an yarn training object moving with high speed and good stability without any end breakage by using 80kg/cm<2>G or more high pressure liquid for working fluid in suction gun. CONSTITUTION:Compressed air is supplied temporarily from a supply hose 10 and a strong suction force is produced in a yarn guide port 3a by the ejector effect of the compressed air jetted drom a jet port 12 of a compressed air chamber 8 provided in a suction gun 1 so that a travelling yarn is attracted into said port 3a to reach its rear end through a yarn guide pipe 3'. And 80kg/cm<2>G or more high pressure liquid is supplied from a supply hose 9 and injected from a injecting port 11 of a pressurized liquid chamber 6 in the gun 1 to generate 4,500m/min or more high speed for the travelling yarn by this water jet effect and attract the yarn with a strong accompanying force. The gun 1 is moved maintaining this attracting condition to train the yarn over a body roller rotating with 4,500m/min of more high speed and wind the yarn around a bobbin of a take-up unit.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention resides in a method for capturing yarn by suction at high speed, and capturing the yarn at high speed in a place where the yarn is being moved at high speed, such as in a spinning process. The present invention relates to a yarn threading method and a yarn threading device for threading yarn onto a Godet roller rotating at high speed, a high speed rotating bobbin in a winding process, and the like.

[Prior art]

In order to thread the running thread onto a desired location, such as a goder roller, a wine goo bobbin, or a thread guide,
It is widely known that a movable suction gun is used to catch and thread running yarn. It is also known that pressurized air or pressurized water is used as a working fluid in this suction gun to suction the yarn.

On the other hand, the development of high-speed wine goo has progressed recently, and one with a yarn processing speed exceeding 4500 m 7 mm has entered the stage of practical use.

Therefore, in such a high-speed yarn processing device, 4500 m
To thread thread onto thread processing elements, such as Tatoeba, Goderola, and Winegoo bobbins, which have peripheral speeds exceeding /M,
The yarn suction capacity of the above-mentioned movable suction gun is 4.
It is required that the yarn can be suctioned at a speed of 500 m/mm or more and that this state can be maintained continuously.

However, the yarn suction speed that can be created with a conventional practical movable suction gun for thread hooking is at most 4000 m.
/mm, and this value is widely accepted in this industry. Therefore, when introducing the above-mentioned high-speed winder to the production site, the speed of each yarn processing element was set to 4000 m/m1R or less, and a conventional suction gun was used to thread the yarn onto the yarn processing element. This method was adopted by threading the yarn captured by the winder, and after threading was completed, the speed of the high-speed winder was increased to full-scale high-speed operation.

Although this method is a method of threading using a conventional suction gun, it degrades the performance of the high-speed winder that has been developed, and cannot be said to fully demonstrate its performance. , here the yarn suction speed is 45
It became necessary to develop a suction gun for threading that can be moved freely over 00 m/+++ m.

As will be detailed later, the present invention uses a liquid (specifically, water) as the working fluid of the suction gun.
A suction gun that uses water as the working fluid is disclosed in Japanese Utility Model Publication No. 51-28424. However, in this document, in order to improve the suction power of the yarn,
It is possible to increase the hydraulic pressure, but it is said that this increases the impact force on the yarn, and actually causes yarn breakage, suggesting that increasing the hydraulic pressure is not a practical means. There is.

In order to confirm this point, the inventor made an attempt to confirm this point by using a hydraulic pressure of 80
The yarn was suctioned using a suction gun using water at a pressure of 100 Kg/lyl G as a working fluid. When the yarn was suctioned using a Godet roller with a circumference of 5,000 m/++ m, the yarn was threaded onto Godet rollers with a circumference of 5,000 m/++ m, and surprisingly, the yarn did not break, despite the extremely high hydraulic pressure. It was a success.

[Purpose of the invention]

The present invention is based on the above-mentioned knowledge and provides technical means to satisfy the above-mentioned requirements, namely, a thread threading method using a movable suction gun capable of threading a thread at a thread threading location at a speed of 4500 m/mi or more. and a threading device.

[Structure of the invention]

The yarn threading method according to the present invention that achieves the following is as follows.

A suction gun to which a liquid with a pressure of 80 Kf/cJG or more is supplied and injected is brought close to the running yarn, and the yarn is sucked through the suction port of the suction gun, and the yarn is suctioned in a V-shape. The running speed of the yarn is 450
Create a state of 0 m/mm or more, move the suction gun while maintaining this suction state, and
A thread threading method comprising threading the thread being sucked by the suction gun onto a threading object having a moving speed of m/mm or more.

Further, the thread threading device according to the present invention for carrying out this thread threading method is as follows.

Is the working fluid supplied at a pressure of 80 kg/at? A movable yarn suction suction gun that generates a high-pressure liquid with a pressure higher than G, a leftover liquid treatment tank that separates the yarn and liquid that are simultaneously discharged from the suction gun, and a leftover liquid treatment tank that separates the yarn from the liquid. A liquid storage tank for storing liquid, and a liquid in the liquid storage tank,
Kl/cn? and a high-pressure pump that supplies high-pressure liquid G to the suction gun.

The present invention consists of the above-mentioned structure, but based on the above-mentioned knowledge,
As a result of experiments conducted under other conditions, it was found that more preferable conditions for achieving the above-mentioned purpose can be defined using mathematical expressions, which will be described next.

Now, if the exit flow velocity of the nozzle in the suction gun from which high-pressure liquid is ejected is Vo (m/mm), and the speed of the threading object is v+ (m/mm), then the relationship between vo and Vl is as follows. (V, 10.6)≦vo≦(V, 10.5')・
・・・・・・(a) Satisfying the following relationship means that
It has been found that N is preferable because it minimizes the breakage of the yarn during threading.

In addition, here, vo is as follows when the potential theory is used, assuming that the nozzle outlet pressure is atmospheric pressure.

However, 2: Gravitational acceleration (=9.8 m1se!) γ
Specific weight of liquid (Kq/m3) Po: Liquid pressure (cage pressure) (Kg/6n2) where, cD
== v, / vo, then from equation (a), 0.5
≦CD≦0.6 ・・・・・・(C), and
From equation (b), the following can be derived.

Now, based on experimental results, we have determined the preferred conditions for minimizing thread breakage during threading. Expressed in terms of...
...(e), and on the left-most side of equation (e), CD of equation (C) = 0.5
By substituting C, = 0.6 in equation (c) to the right-most side, we get
Preferred hydraulic pressure P to be used in the present invention. The relationship between V and the speed V of the object to be threaded is as follows.

・・・・・・・・・＜f) 〔Example〕 The present invention will be explained below with reference to embodiments shown in the drawings.

Hereinafter, in this specification, "6If suction force" refers to the force that sucks the yarn into the suction tube (thread guide g:) through the thread guide port at the tip of the suction gun, and "suction force" This term refers to the force that causes the yarn to be attracted by the working fluid in the suction gun.

Now, FIG. 1 shows an example of a suction gun used in the threading method of the present invention. This suction gun 1 is
A suction pipe 3 and a thread guide pipe 6 are provided at the front of the main body 2.
', and a thread guide port 3a is provided at the tip of the suction pipe B.
is the provision.

Further, in the middle part of the main body 2, there is an inlet 4 connected to a supply hose 9 for pumping high-pressure liquid with a liquid pressure of 80 h/crlG or more,
An inlet 5 to which a compressed air supply hose 10 is connected is provided. The former injection port 4 communicates with a pressure liquid chamber 6 within the main body 2, and the latter injection port 5 communicates with a pressure chamber 8 at the tip via a conduit 7.

The pressure liquid chamber 6 is provided with an injection port 11 so as to surround the rear end of the yarn guide tube 3', forming a liquid jet mechanism.
Similarly, an injection port 12 is provided in the pressure chamber 8 at the tip so as to surround the rear end of the suction pipe 6, thereby forming an ejector mechanism.

The injection ports 11 and 12 may be annular slits or may have a plurality of holes arranged annularly. A discharge port 16 is provided at the rear end of the main body 2, and the discharge port 16
A discharge hose 14 is connected to.

In order to suction the running yarn with the suction gun 1, first, the fluid pressure from the supply hose 9 is 80 Kg/cn? The high-pressure liquid of G or higher is kept in a stopped state, and compressed air is temporarily supplied from the supply hose 10.

As a result, a strong suction force is generated at the yarn guide port 3a due to the ejector effect of the compressed air ejected from the injection port 12 of the pressure chamber 8, and the traveling yarn is sucked into the yarn guide port 6a and reaches the rear end via the yarn guide tube 6'. . Next, high-pressure liquid with a liquid pressure of 80 Kq/ctl G or more is supplied from the supply hose 9 and is ejected from the injection port 11 of the pressure liquid chamber 6. - The water jet effect caused by the jetting of this high-pressure liquid creates a speed of 4,500 m/min or more for the traveling yarn, and the yarn is sucked by a strong accompanying force, and the discharge hose 1 is drawn together with the high-pressure liquid.
It is discharged to 4.

As shown in FIG. 2, the high-pressure liquid supply hose 9 is connected to a discharge port of a high-pressure pump 20 via a pressure regulating valve 21. This pressure regulating valve 21 allows the necessary pressure to be set, and the pressure fed to the supply hose 9 can be arbitrarily changed by setting the pressure. 22 is a pressure gauge, which allows the set pressure to be checked. On the other hand, the discharge boss 14 is connected to a waste yarn processing tank 26. The waste yarn processing tank 23 has a net 24 provided at an intermediate position inside thereof, and a liquid storage tank 25 formed below the net 24. The mixture of working liquid and yarn sent from the discharge hose 9 is separated in the net 24, and the separated liquid is transferred to the liquid storage tank 2.
Flows down to 5.

The liquid once stored in the liquid storage tank 25 is sucked into the high-pressure pump 20 via the liquid supply pipe 26 and the filter 27, and then transferred to the suction gun 1 via the supply hose 9 again at a liquid pressure of 80 Ky.
/i Forced at G or higher. At this time, the excess liquid that overflowed due to the throttle of the pressure regulating valve 21 flows back to the liquid storage tank 25 side from the liquid sending pipe 29.

In this way, the liquid in the liquid storage tank 25 is circulated through the high-pressure pump 20, the suction gun 1, and the waste yarn processing tank 23 before being used for suctioning the yarn. 60 is a supply port for initially supplying liquid to the circulation system, and 61 is a discharge port for finally draining liquid. The circulating fluid in the liquid storage tank 25 described above is not entirely circulated, but is partially supplied and partially drained using the supply port 60 and the discharge port 31, so that a portion of the circulating fluid can be replaced with new fluid. It is also possible to circulate it while doing so.

In addition, the liquid separated in the waste thread processing tank 26 is not reused, but is completely discarded, and a separate liquid storage tank is provided where new liquid is always supplied.
The liquid may be sent to the high-pressure pump from the separate liquid storage tank.

The high-pressure pump 20 and the waste yarn processing tank 26 are connected to a moving carriage 67.
It is installed on top of the machine and can be moved to any location.

In this case, only one of them may be placed. Although it is not necessarily necessary to provide it on the movable cart 67, with such a movable configuration, one suction gun 1 can be used for spinning machines with multiple spindles, and it can also be used in the field. Threading is advantageous because it can make the work more efficient.

In FIG. 2, 62 is a spinning head of a high-speed, commercial spinning machine. At the bottom of the spinning head 32, an oil applying device 66 and a godet roller 34 are installed.
, 35 and a winding device 66 are provided. When threading this melt-spinning process, the initial yarn Y spun from the spinning head 32 is sucked into the yarn guiding port 6a of the suction gun 1, and then passed around the godet rollers 34 and 35. It is then wound around the bobbin 36a of the winding device 66.

Now, does the above-mentioned suction gun 1 have a hydraulic pressure of 80 Kg/cn? A high-pressure liquid of G or more is used as a working fluid to suction the yarn. Water is most suitable as this high-pressure liquid because it is inert to the yarn and can be done manually at low cost. Since the suction gun 1 according to the present invention uses a high-pressure liquid with a pressure of 80 Kf/cm2G or more as a working fluid, the force accompanying the yarn is high, and the suction force thereof is very large. Therefore, after using this suction gun to thread the yarn on a Godet roller with a circumferential speed of 4500m/WB or more, a high suction tension is continuously applied to the high-speed yarn that is sent out according to the circumferential speed of the Godet roller, which makes it extremely stable. Allows threading.

Furthermore, since the liquid is incompressible, depending on the structure of the suction gun, the liquid jet effect ejected from the injection port 11 of the pressure liquid chamber 6 may not be sufficient to generate enough suction force to suck the initial running yarn into the yarn guide port 6a. (high vacuum) may be difficult to generate.

In this case, since the ejector mechanism consisting of the pressure chamber 8 and the injection l] 12 is provided as an auxiliary mechanism at the tip of the suction gun 1 described above, it is preferable to use this mechanism to suction the initial yarn.

Further, the high-pressure liquid for the suction gun 1 can be obtained by a high-pressure pump driven by a motor with a relatively small power capacity. In addition, since an incompressible liquid is the working fluid, 8
Extremely quiet threading of 0 dB or less is possible.

FIG. 3 shows another embodiment of the high pressure liquid supply device for the suction gun.

In the apparatus shown in FIG. 3, the supply hose 9 of the length gun 1 is removably connected to the supply end 56 of the high-pressure liquid supply side via a one-touch joint 57, and the discharge hose 14 is connected to the supply end 56 of the waste yarn processing tank 23. It is detachably connected to via a one-touch joint 59.

The liquid (water) separated in the waste yarn processing tank 26 is discharged through a discharge pipe 60.
The liquid can be discharged to the bit 61 through the liquid feed pipe 64, and is also sent to the liquid storage tank 25 on the high pressure liquid supply side through the liquid feed pipe 64, so that it can be circulated and reused as in the embodiment shown in FIG. Further, the waste threads separated in the waste thread processing tank 26 are transferred to a dehydrator 62 to be dehydrated. Water separated by the dehydration process is discharged to the bit 61. The dehydrator 62 is turned on and off by a switch 66. In this embodiment, the waste yarn processing tank 26 and the dehydrator 62 are separate and independent;
This may be integrated into a configuration.

A liquid supply pipe 50 communicating with a water supply source is connected to the liquid storage tank 25 on the high-pressure liquid supply side via a valve 51 . The water in the liquid storage tank 25 is pressurized and pumped by the high-pressure pump 20,
After pressure fluctuations are equalized by the accumulator 52, the pressure is adjusted to a predetermined pressure by the pressure regulating valve 21. The water that has exited the pressure regulating valve 21 is further adjusted for fluctuation in an accumulator 56 as required, and reaches the pulp 54. Excess water that overflows due to the throttle of the pressure regulating valve 21 is returned to the liquid storage tank 25 again. The high-pressure pump 20 can be turned on and off by remote control using a switch 55. Similarly to the embodiment shown in FIG. 2, this device can also be used effectively by circulating high-pressure liquid without waste.

Example 40D-10fxs yarn of nylon filament was melt-spun at a speed of 5500 m/1 m at high speed, and threading was carried out using a suction gun as shown in FIG. Messenger”
The working fluid used is water, and the power consumption of the high-pressure pump is 2.
2 KW, H capacity was used.

The initial yarn was reliably sucked in by the auxiliary ejector mechanism, and in subsequent suctions, high tension was developed by setting the pressure of high-pressure water to 200 Ky/lJG, making it possible to thread extremely stably. In addition, the noise generated inside the thread hook is 80
It was below dB and did not bother the ears.

〔Effect of the invention〕

As described above, the present invention provides a method for threading by suctioning and pulling a running yarn using a movable suction gun, in which the working fluid of the suction gun is heated to 80K.
Since high-pressure liquid of y/cJG or more is used, higher suction force can be obtained compared to conventional suction guns, and stable yarn can be obtained even when running yarn at yarn speeds of 4500 m/1 nJM or higher, which cannot be achieved with conventional suction guns. You can make a bet. Moreover, since the working fluid is an incompressible liquid, less noise is generated.

Further, the device of the present invention for carrying out the above threading method includes:
By separating the mixture of the liquid discharged from the suction gun and the yarn in a waste yarn processing tank, the waste yarn can be easily disposed of, and the separated liquid is again pressurized by a high-pressure pump and circulated. Since it can be reused, the threading method can be carried out efficiently.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a longitudinal sectional view showing an example of a suction gun used in the threading method of the present invention, Fig. 2 is a schematic diagram of the overall device for carrying out the threading method of the same type, and Fig. 3 This figure is a schematic diagram showing another example of the apparatus corresponding to FIG. 2. 1...Suction gun 6...Pressure liquid chamber 9...(High pressure liquid) supply port 11...Injection port 14...
Discharge hose 20... High pressure pump 22... Adjustment FE
Valve 26... Waste thread processing tank 25... Liquid storage tank. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Masaru Kubuguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

[Claims] 1. The pressure on the running yarn is 80 h/cr!
A suction gun to which a liquid of G or more is supplied and injected is brought close, and the yarn is sucked through the suction port of the suction gun, and the traveling speed of the suctioned yarn is 4500 m/miR or more. - While maintaining this suction state, the suction gun is moved, and the thread being suctioned by the suction gun is threaded onto an object to be threaded having a moving speed of 4500 m/M or more. A thread threading method. 2. A movable yarn suction suction gun whose working fluid is a high-pressure liquid with a supply pressure of 80 Kf/i G or more, and a yarn tube that separates the yarn and the liquid that are simultaneously discharged from the suction gun. A processing tank, a liquid storage tank for storing the liquid separated in the thread count processing tank, and a liquid storage tank for storing the liquid in the liquid storage tank.
A yarn threading device comprising a high-pressure pump that supplies a high-pressure liquid of 0 K4/cJ G to the suction gun.