JPS5940744B2 - Yarn processing method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a yarn pool supply device that supplies yarn with a constant yarn tension by a yarn pool supply device interposed between a yarn supply device in a first step and a yarn consuming textile machine in a second step. Regarding the method of sending to the second process,
More specifically, the present invention relates to a method and apparatus for sensing the amount of yarn accumulated on a yarn accumulation supply device and adjusting the yarn supply speed to the second step.

In producing and processing textile fibers, yarns, and other filamentous materials, it is necessary to move them from a first step to a second step, sometimes at a constant or controlled speed value. arise.

The need for this is seen when the yarn is fed into the second step and consumed under controlled and uniform tension.

An example of the above production system is a case where the first process is a yarn extruder and the second process is a yarn twisting machine.

The problem that arises when such combinations occur is when two such steps are combined as one production or processing system, i.e. the thread tension required to draw the material from the first step is higher than that of the second step. This is due to the fact that the thread tension is greater than the thread tension when being supplied to the process. In addition, attempts have been made to compensate for this by providing some sort of reservoir between the two steps.

The storage serves to take the material to be processed from the first step, temporarily store it, and then send it to the second step. Such storage systems are usually quite complex and expensive in equipment, and their ability to function satisfactorily for their purpose, especially when the material is processed under relatively little tension in the second step. In recent years, various yarn pool supply devices have been created, which draw yarn from a yarn supply source, such as a package cage, and transfer it under constant tension to a knitting machine, a winding machine subula, etc. Used to feed yarn to yarn consuming textile machines such as.

All of these devices intermittently draw yarn from a yarn supply. Because of such intermittent withdrawal, such a yarn pool supply device continuously withdraws yarn from the first process such as a yarn extruder, a yarn coating machine, and a yarn twisting machine, spooler, and knitting machine. There are six disadvantages that it cannot be used in systems that require direct feeding to a second process such as a machine. The object of the present invention is to obtain a yarn processing method and a device free from such drawbacks, in which the yarn is withdrawn from a first yarn treatment step at a constant speed, temporarily stored in a yarn collection device, and then The yarn was pulled out from the yarn pool under a predetermined tension and fed to the second yarn processing or consumption step.

A further object of the present invention is to be able to temporarily store the yarn drawn from the first step at a constant and controlled rate of withdrawal, and to deliver the yarn at a constant and controlled tension to the second step. You are on your way to getting storage equipment.

Further, in the present invention, a second treatment is performed in which the yarn is temporarily stored for the purpose of pulling out the yarn at a constant rate from the first yarn treatment process and sending it out for the second yarn treatment process with uniform tension. To provide a yarn sump and delivery device that stores a sufficient amount of yarn so that yarn can be supplied according to the amount of yarn required in a process.

To achieve the above objects, a preferred form of the invention comprises a spool feeding device which is driven continuously in a play-free relationship from the first yarn processing step.

The yarn pool supply device is equipped with a detection system that constantly detects the amount of yarn being stored. The detection method controls the rate at which the second yarn processing device draws out the yarn from the yarn pool supply device.
When the amount of yarn in temporary storage reaches the set minimum value,
The sensing scheme slows down the rate at which the second step withdraws yarn from the yarn pool supply device. In doing so, the amount of yarn in storage is operated to increase. When the amount of thread temporarily in storage reaches a set maximum value, the sensing scheme is activated to increase the speed of thread withdrawal in the second step. By means of such a mechanism, a yarn storage device that draws yarn from a first process step at a constant rate can operate as a device that continuously supplies yarn at a predetermined tension to a second process step. Features. This will be explained below with reference to the drawings. Figure 1}
The yarn supply source 700 is a spinning machine or a yarn coating machine, a spinning machine, etc., and then the yarn 712 is drawn out at a uniform and continuous speed through a yarn pool supply device 701 to a yarn consuming textile machine 705. is sent.

The textile machines include thread winding machines, subulas, knitting machines, etc. Any type of conventional device can be used for the structure of the thread pool supply device as long as it achieves the purpose.

In order to achieve the above-mentioned object, FIG. 1 illustrates a typical yarn pool supply device. In this device, the spool supply device 701 has a vertically rotating hollow shaft 710 which is connected to a hollow fixed position support member 702 attached to or located near the thread supply source 700. It is pivoted inside.

A stationary drum 703 is attached to the lower part of the hollow shaft 710, and there is a gap between the lower part of the support member 702 and the drum 703. The gear 704 is supported on a hollow shaft 710 in an inclined manner and is assembled in the gap between the support member 702 and the drum 703, the purpose of which is to prevent the drum from rotating. gear 704
The teeth 366 in symmetrical positions mesh with the face gear 731 on the support member and the face gear 732 on the drum 703, respectively. The hollow shaft 710 is connected to the shaft 706 and the pulley.
708, a cog belt 707, and a pulley 709 fixed to the upper position of the hollow shaft 710, which is moved at a predetermined constant speed from the main drive part of the yarn supply source 700 (not shown).

Due to this structure, the pulleys 708 and 709 are rotated in a constant and slip-free relationship with the yarn supply source 700, thereby allowing the yarn pool supply device to transfer the yarn 712 to the yarn consuming textile machine 705. The yarn supply source 7 passes through a yarn guide 726 so that a predetermined amount of yarn is temporarily stored on the way.
Thread 712 can be pulled out from 00. Support member 7
02 and the gear 704, a thread guide arm 711 is fixed to the hollow shaft 710, and the arm 711 has an extension 371 with a thread channel 236 at its tip. The thread guide arm 711 has an axial hole (not shown) in the hollow shaft 7.
10 and communicates with an axial hole (not shown),
It constitutes one thread path. The yarn guide arm 711 is constantly rotating around the drum 703 and wraps the yarn around the drum several times so that the yarn 712 is stored on the drum.
The gear 704 is arranged obliquely with respect to the hollow shaft 710,
Moreover, since the face teeth of the support member 702 and the face teeth of the drum 703 are in mesh with each other at the same time, when the hollow shaft 710 rotates, the gear 704 performs a rhythmic rocking motion in the vertical direction. The gear 704 is connected to the support member 702
It acts as a movable key or coupling member for the purpose of locking the drum 703 against the drum 703. On the surface of the drum 703, there are plate pieces provided with many gaps so that the yarn wound on the drum moves axially in the direction of the yarn pull-out section in response to the yarn tension toward the yarn guide 727. There are 282. In many yarn pool feeding devices, there is no such yarn feeding device, in which case the wound yarn is axially wrapped around the drum soil at the new yarn wrap as the yarn path 236 rotates relative to the drum. It's starting to get pushed out. The yarn 712 is drawn axially relative to the drum through the yarn guide 727. In this way, a continuous yarn path is seen from the yarn supply source 700 to the yarn consuming textile machine 705.

Since the hollow shaft 710 continuously rotates, the yarn is pulled out from the yarn supply source at a constant speed (amount), and the yarn is pulled out from the yarn guide 72.
6, through the communicating axial holes of the hollow shaft 710 and the arm 711, through the thread channel 236, and then the thread is wound helically several times onto the drum by the thread channel 236. Then the yarn is sent from the drum to the yarn consuming textile machine 7
0511C. It is then pulled out in the axial direction through the thread guide 727 under constant tension. In order to keep this thread tension constant, a control means described below is used. A suitable yarn tensioning device T, as shown in phantom in FIG. 1, may be placed intermediate the drum 703 to the yarn consuming textile machine 705 for the purpose of applying a predetermined tension to the yarn passing therethrough. Yarn-consuming textile machines 705 often include a single motor 725.

This motor is a two-speed, variable speed, or rapid start/stop motor in response to a certain signal, and is a motor that can change its rotational speed in a short period of time. The motor 725 is of a two-speed variable speed type, and its high-speed rotation is faster than the speed at which the yarn pool supply device 701 draws out yarn from the yarn supply source 700.
05 is set to pull out the thread 712 at a slightly faster speed. The low speed rotation of the motor 725 is caused by the thread pool supply device 70.
The yarn consuming textile machine 705 is set to draw yarn from the drum 703 at a slightly slower speed than the speed at which the yarn consuming textile machine 705 draws yarn from the drum 703. At either speed, yarn can be drawn out from the drum 703 by the yarn consuming textile machine 705 under a constant predetermined yarn tension under the influence of the motor 725. The thread sensing member 719 in the vertical state is the support member 7
It is pivoted on 02.

The lower end 719' of the sensing member 719 is positioned to contact the several turns of the spool on the drum 703. When the number of windings of the thread on the drum 703 reaches the minimum value, the third
The illustrated spring 318 pivots the sensing member 719 toward the drum 703 until the screw 324 on the sensing member 719 pushes against the valve piece 264. When this condition occurs, the lower end 71 of the sensing member 719
The portion 9' is located at the position indicated by the imaginary line 719/A in FIG. The valve piece is a vertical pivot type valve, and controls the rotational speed of the motor 725 by pneumatic actuation as shown in FIGS. 2-5. For its pneumatic operation, the support member 702 has holes 714 providing quick access to a source of compressed air, not shown. The hole 714 branches into two holes 715 and 716 in the support member 702 . When the valve 264 is open, the hole 715 communicates with the atmosphere through the hole 266 in the black 717. The hole 716 communicates with a cylindrical air chamber 721 with a horizontal axis.

The air chamber 721 is isolated from the outside air by a flexible diaphragm 246, as seen in FIG. The diaphragm 246 is connected to a support ring 248 and a bolt 249.
Piston 722 attached to support member 702 at
can slide in the axial direction within the air chamber 721 and the support ring 248.

The diaphragm 246 is located between the bottom of the piston and the interior of the air chamber. The hole 714 passes through the orifice 262 in the threaded black 254 and the holes 256 and 255, and then into the support member 7.
It is connected to a compressed air source (not shown) through a horizontal hole 258 in 02 and through pneumatic pipes 260 and 261 in FIG.

The cross-sectional area of hole 266 in black 717 is at least three times larger than the cross-sectional area of orifice 262 in black 254. In this system, the compressed air pushes the valve piece 264 into an open state, and when the valve piece is open, the compressed air escapes to the atmosphere. A micro switch 723 shown in FIGS. 2 and 4 is located a little apart from the outer end of the piston 722, and is connected to the motor 725 by electrical wiring 724. When the amount of yarn wound on the drum 703 becomes less than the predetermined number of windings, the yarn sensing member 719 pivots inward of the drum 703 by the spring 318, thereby causing the thread to twist. 324 leads to closing the valve piece 264.

This means that the yarn consuming textile machine 705
This is caused by the yarn being pulled out from the drum 703 at a faster rate than the yarn being pulled out from the yarn supply source 700 by 1. When this valve piece 264 closes, the air pressure is reduced to the air chamber 7.
The pressure in 21 increases and piston 722 advances into contact with microswitch 723. Micro switch 72
3 sends an electrical signal to motor 725 by electrical line 724 to cause the motor to rotate at a low speed and to slow down the speed at which yarn consuming textile machine 705 withdraws yarn from drum 703 . The amount of thread wound on the drum 703 then increases, and the increased thread winding portion passes below the distal end 719' of the thread sensing member 719 and moves downward along the axis on the drum. When the required amount of yarn accumulates on the drum 703, the yarn sensing member 719 detects the wrapped portion of the yarn.
is pivoted away from the drum so that the valve piece 264 is opened. So air chamber 721
The pressure of the compressed air inside decreases, and it is separated from the micro switch 723 by the action of an appropriate force such as a spring (not shown). When this piston 722 is pulled away, a new electrical signal is transmitted by electrical wiring 724 to the motor 725, causing the motor to run at high speed and the yarn consuming textile machine 70
The thread consumption speed due to No. 5 returns to the original speed.

In this way, the yarn sensing member 719 and the yarn pool supply device 701
Due to the pneumatic actuation system in the drum 703, the speed of yarn consumption of the yarn consuming textile machine 705 can be increased or decreased depending on the number of windings of the accumulated yarn in the drum 703, thereby constantly , a sufficient yarn reservoir can be maintained to supply yarn under a predetermined and constant tension to the yarn consuming textile machine 705. That is, the amount of yarn wound on the static drum soil that the yarn sensing member 719 is in contact with decreases, and the yarn sensing member 719 moves into the stationary drum as indicated by the imaginary line 719'A in FIG. 3 without receiving any resistance from the wound yarn. As shown in the figure, when it is immersed, a control signal is sent to change (decelerate) the driving speed of the motor 725, and the yarn take-in speed of the subsequent textile machine that is consuming the yarn being driven by the motor 725 is changed (
(deceleration), the amount of yarn stored on the stationary drum begins to increase again, and due to the increase in the amount of stored yarn, the hanging yarn again supports the yarn sensing member 719 at the solid line position 719' in FIG. 3. , and change the speed of motor 725 to its original state (
speed up).

By controlling the motor 725 by the yarn sensing member 719, the tension of the yarn drawn out from the stationary drum, that is, the yarn pool supply device, can be maintained at a control tension unique to the subsequent yarn consuming textile machine, and can be controlled at a constant tension. As described above, according to the present invention, the yarn running between the yarn pool supply device and the subsequent textile machine is maintained at a predetermined value by controlling the yarn tension of the subsequent textile machine,
Since it does not affect the yarn tension control between the yarn supply source and the yarn pool supply device, that is, the two sections having different yarn control tension values do not interact due to the intervention of the yarn pool supply device. The yarn tension in both sections could be independently controlled and maintained under desired conditions.

This device is not limited to use as described above for yarn sources and yarn consuming textile machines, but the method and device of the invention can also be applied to other applications.

Furthermore, the term "thread" used so far is not limited to these, but also includes thread, twine, fiber bundle, monofilament,
or all kinds of filament bundles made of multiple filaments or similar filament bundles, and also includes non-elastic materials, elastic materials, struts 1. All notchable or processed materials are also included.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the device of the present invention, FIG. 2 is an explanatory perspective view of a yarn sensing device that monitors the amount of yarn in the yarn reservoir and the amount of yarn pulled out from the reservoir, and FIG. An enlarged sectional view of the thread sensing device, Figure 4 is a sectional view of the soil taken along the line 4-4 in Figure 3, and Figure 5 is an enlarged sectional view of the thread sensing device.
The figure shows a sectional view taken along line 5--5 in FIG. In addition, 236 is a thread path, 246 is a diaphragm, 254 is black, 255, 256, 266, 258 are holes, 26
0,261 is a pneumatic pipe, 262 is an orifice, 264 is a valve piece, 282 is a plate piece, 700 is a yarn supply source, 701 is a yarn pool supply device, 702 is a support member, 703 is a drum, 70
4 is a gear, 705 is a yarn consuming textile machine, 710 is a hollow shaft,
711 is a thread guide arm, 712 is a thread, 714, 715
, 716 is a hole, 717 is black, 719 is a yarn sensing member, 71g is an end portion, 712 is an air chamber, 722 is a piston, 723 is a micro switch, 726 and 727 are yarn guides, and 731 and 732 are face gears, respectively. .

Claims (1)

[Scope of Claims] 1. A yarn processing method, wherein yarn is pulled out from a first step, temporarily stored in a yarn pool supply device, and yarn is pulled out from the yarn pool supply device in a second step. : The yarn is pulled out from the first process at a constant draw rate by the thread pool supply device, the amount of yarn stored in the thread pool supply device is constantly monitored, and the amount of yarn in the thread pool supply device is kept at a predetermined minimum. When the amount of yarn reaches a predetermined maximum, the proportion of the yarn drawn out by the second step from the yarn pool supply device is reduced, while when the yarn amount reaches a predetermined maximum, the yarn amount drawn out by the second step from the yarn pool supply device is reduced. A yarn processing method characterized in that the tension of the yarn being pulled out from the first step and the tension of the yarn being supplied to the second step are maintained at predetermined values by increasing the ratio of the yarn processing method. 2. A yarn supply source that sends out yarn, a textile machine that processes the sent out yarn, and a yarn pool supply device that temporarily stores yarn between the yarn supply source and the textile machine, and the textile machine A yarn processing device that draws out yarn from a yarn pool supply device: a drive that connects a yarn supply source to a yarn pool supply device in order to continuously drive the yarn pool supply device in a play-free relationship with the yarn supply source; means, yarn amount detection means in contact with the wound yarn of the yarn pool supply device to continuously monitor the amount of yarn on the yarn pool supply device, and a change in the proportion of yarn drawn out by the textile machine from the yarn pool supply device. A yarn processing device comprising means for maintaining and controlling the tension of the yarn being pulled out from the yarn supply source and the yarn tension consumed by the textile machine at predetermined values in response to a signal transmitted from the detection means.