JPS626904A - Yarn production apparatus - Google Patents

Abstract

PURPOSE:To apply a desired yarn tension to a yarn between godet rolls and a winder at all times even in accelerating or decelerating, by providing a controller capable of controlling the rotational speed of the godet rolls and winder in correlation in the yarn feed direction. CONSTITUTION:The rotational speeds of godet rolls 2 and 3 and bobbins 4 and 5 of a winder 6 are inputted to a computer controller 21, and an output thereof is set so that an output signal for applying an optimum tension to a yarn 7 between the godet rolls 2 and 3 and the winder 6 at the time of accelerating or decelerating the godet rolls 2 and 3 and winder 6 may by sent to a driving part of the godet rolls 2 and 3 and driving part of the winder 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yarn spinning device equipped with a body []-ra and a winder in the yarn feeding direction.

[Prior Art] Many years have passed since synthetic fibers were invented, and during that time, research, development, and practical application of yarn-spinning methods and equipment have progressed, and today's technological state has been formed. As the next stage of technology, there is a strong demand for highly practical silk spinning technology that allows high-mix, low-volume production and high-speed spinning.

Here, the current state of silk reeling technology and its problems are summarized as follows.

The maximum yarn winding speed in the silk reeling technology currently in practical use as a production machine is said to be around 4000 m/min, and a synchronous electric motor is used to drive the yarn transfer roller in this implementation device. , the speed of the synchronous motor of each spindle is controlled via one common inverter (thyristor), and this relationship is shown in FIG. ,
lb.

2a, 2b, 3a, and 3b are each driven by a D synchronous motor (not shown), and the speed of these synchronous motors is controlled via a common inverter 4a14b using multiple spindles. The yarns a, b, c are transferred from a yarn spinning element (not shown) to a yarn collecting element, such as a winder (not shown).

In such a silk reeling device, if the yarn speed is increased,
The first problem that arises is how to thread the thread onto the high-speed godet roller at the start of thread spinning. To solve this problem, there is a 7i yarn winding method described in Japanese Patent Publication No. 47-35929, in which the Godet roller is operated at low speed, and after threading, the Godet roller is moved at a predetermined position. It is said to increase the speed.

In this conventional technique, problems appear particularly when further speeding up is to be achieved. The problems are mainly caused by the fact that multiple spindles are controlled in the same way, and the problem is caused by the fact that multiple spindles are controlled in the same way.
godet roller, speed of the yarn collection element (e.g. winder) m
This is due to the fact that the tension must be appropriately controlled in the longitudinal direction (yarn feeding direction) so that an appropriate tension is applied to the yarn even when increasing or decelerating.

First, the first problem with the fact that each weight is controlled in the same way is that the synchronous motors for the same purpose of each weight are controlled by a common inverter, so if a thread breaks on a certain weight, The weight is missing &f! The point is that silk reeling must continue at the same time.

This is because the high-speed body [1-ra] cannot be directly threaded, and if the thread is not threaded, the thread will break. -) It is necessary to speed up to the maximum possible speed, but since the inverter is common, if the speed is increased, the body of the other stationary hoop (21-ra) will also be in the speed state, and it is necessary to rethread the thread breakage. This is because, when the thread of Sen's normal weight comes up, he ends up in a state where he doesn't know what he's doing. The second problem is that with the arrival of an era of high speed, multi-breed cattle Bi
Even though we are now in the era of t-production, the problem is that multiple spindles or the same shaft cannot be operated, resulting in a production machine with a lot of play.

Next, problems related to vertical control will be discussed.

In order to maintain normal yarn reeling while preventing yarn breakage, etc., it is important to apply appropriate tension to the yarn in the longitudinal direction. ,
It is important to easily apply a predetermined tension during deceleration.

As yarn stray electricity becomes faster, it is naturally required to keep the increase and deceleration times short in order to minimize losses during acceleration and deceleration, and as the acceleration and deceleration speed increases, Thread tension control as described above is required. However, in a conventional yarn reeling device, each godet roller and each winding machine are controlled in the same way in the horizontal direction (that is, in each heel direction), but the control in the longitudinal direction is controlled by a simple A-pun. It was due to control. In such open control, when aiming at a spinning speed of 5,000 to 8,000 m/min or higher and increasing or decreasing the speed in a short period of time, a desired tension is always maintained between the body 11-ra and the winding machine. This is extremely difficult.

If the tension of the yarn deviates significantly from the target tension, problems such as yarn breakage and winding due to yarn breakage occur.

[Problems to be Solved by the Invention] The present invention aims to solve the problems described in 1), especially the latter problem. It is an object of the present invention to provide a device that can constantly maintain a desired thread tension between threads and maintain normal thread spinning even at high speeds.

Means for Solving Problem 1 of the Invention The yarn spinning device of the present invention that meets this objective is a yarn spinning device that has a godet roller that takes up the yarn and a winder that winds up the yarn from the godet roller. The rotational speed of the take-up machine is controlled in relation to each other in the yarn feeding direction.
- consists of a

Here, the controller consists of a computer, for example. The rotational speed control of the godet roller and the winder, which are related to each other in the yarn feeding direction, may be A-punch control or feedback control that feeds back the rotational speeds of each, and the speed ratio between the respective rotational speeds is constant. Alternatively, it may be controlled to a constant speed difference, or a constant speed ratio or a constant speed difference that changes in a certain pattern depending on the actual speed at the time. In short, the Godet roller and the winder are designed to prevent yarn breakage from occurring in the yarn between the body [1-ra and the winder, increase the tension of the yarn between this area, and control it to the desired value even during deceleration. It is sufficient if the rotational speed of the machine can be controlled in a related manner. Therefore, a yarn tension detection device is installed between the body roller and the winding machine, and the signal from the tension detection device is fed back to the godet roller and the winding machine so that the detected tension is always within the desired range. It is also possible to control the rotational speed of the machine in relation to the gradient.

Further, it is desirable that the above-mentioned point [1-ra] be provided independently on each weight or each weight group.

[Function] In the yarn reeling device configured as described in (b), the rotational speeds of the body and the winder are always relative to each other when viewed in the longitudinal direction (yarn feeding direction). Since the tension of the yarn between the body [1-ra] and the winder is controlled at a related speed, the tension of the yarn between the body [1-ra and the winder] is always maintained at a certain value or within a certain range even when increasing or decelerating.

This related control in the longitudinal direction is performed regardless of the acceleration or deceleration of the yarn, so even when the yarn spinning speed becomes high, the tension control state of the yarn is ensured, resulting in problems such as yarn breakage, yarn slack, etc. The occurrence of troubles can be effectively prevented.

In addition, if each heel part can be controlled vertically in the thread feeding direction independently from other weights, even if any problem occurs with any of the weights or the need to change the lot, the problem will only occur with that weight. It is possible to limit the change in the rotational speed associated with the change in the number of threads, and to minimize the troubles and generation of waste threads due to such troubles. In addition, if troubles occur, the rotation of the godet roller and winding machine are controlled in a manner that is closely related to each other, so it can be handled optimally and quickly.
In this sense as well, it is possible to suppress the occurrence of spots such as waste threads to a minimum. Furthermore, since production can be switched to each heel, it is possible to handle the production of a wide variety of Shokaku beef without deteriorating production efficiency.

[Embodiment] 1 A preferred embodiment of the silk reeling apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 shows a system showing in detail the control system for one of the weights of the silk reeling apparatus of the present invention. In the figure, the spinning line of each spindle consists of a gear pump 1, at least one stage, in the illustrated example, two stages of bodies [1-ra 2.3, and a bobbin 4.5 that can change between the winding position and the underwear position. It consists of a take-up machine 6 installed in the feeding direction of the yarn 7. In a multi-spindle device,
As shown in FIG. 2, weights similar to those described above are arranged in parallel.

The gear pump 1 is driven by an induction motor 8.

Goderola 2.3 has separates i~[゛1-
Layers 9 and 10 are provided, and the yarn 7 is passed around the body [1-la2 and the separate roller 9, and between the godet roller 3 and the separate roller 10.

The godet roller 2.3 is driven by an induction motor 1'I, 12, and the lever roller 9.10 is driven by an induction motor 13.
．． 14. On the other hand, the bobbins 4.15 are each driven by induction motors 15.16. Incidentally, a heater 17.1ε3 is provided in each of the body parts 2.3 to enable heating. Further, 19 is a rubber device for rotating the yarn 7 from side to side, and 20 is an induction motor for driving it.

In the above device, a microphone is provided from the computer to the controller 21 (hereinafter simply referred to as computer). In the illustrated example, a combination [tan] 21 is provided on each spindle of a silk reeling device consisting of multiple spindles, and each device is associated vertically along the feeding direction of the yarn 7. The case is shown below.However, if yarn 7
If it is to be controlled vertically in the feeding direction of
It is also possible to provide J4 with an additional layer.

In order to perform smooth and stable yarn spinning without yarn breakage or yarn sagging, relative control of the rotational speed of the rod eye 2.3 and the winding machine 6 is particularly important. However, such related control is effectively carried out in vertical control.
Ru. In the present invention, the control system by the ``ampicoat'' agent [1-ra 21], especially the body []-ra 2.3 and the winder 60.
The mutually related control systems are configured as follows.

First, the induction motor 11 of the Godet roller 2 and the induction motor 12 of the Godet roller 3 are provided with a pulse generator 22.2.
3 are connected, and the induction motor 1 of the bobbin 4 of the winding machine 6
5. Pulse generators 24 and 25 are connected to the induction motor 16 of the bobbin 5, and the pulse generators 24 and 25 are connected to the induction motor 16 of the bobbin 5, and
It is connected to the input device of the controller 21. As a result, the rotational speed of the bobbin 4.5 of the body [1-ra 2.3, winder 6] is input to the computer controller 21.

In addition, although the gear pump 1 is not connected to the pulse generator in this embodiment, it is connected to the gear pump 1.
′! [This is because the yarn 7 to be taken out is still in a molten state, so it does not require the same rotational speed accuracy as the Godet roller 2.3 or the winder 6, and even if a pulse generator is installed as necessary. good. The induction motor 20 of the traverse device 19 can also be provided with a pulse generator if necessary.

Further, a tension detection device 26 for detecting the tension of the yarn 7 is provided at a position along the yarn 7 between the body []-ra 2.3 and the winding machine 6.
is provided. Since this tension detection device 26 can also detect thread breakage based on a signal indicating that the thread tension is O, it may also be used as a thread breakage detection device. The tension detection device 26 is connected to the input device of the pump coater controller 21 and
The tension or thread breakage is input to the pump coater controller 21.

Also, a temperature detection device 27.
28 are provided, each = 1 computer] controller 21
By being connected to the input device of Goderola 2.
3 is input to the controller 21.

] The storage device of the controller 21 stores in advance data necessary for selecting the optimum thread 1'1 or the optimum thread p+ for various input conditions. ] In the central processing unit of the controller 21,
Based on the yarn spinning conditions from the input device and the data from the storage device, the optimal yarn spinning conditions according to the input are determined and sent to the output device of the I-ra 21. From there, it is output to the drive device of each device.

In this case, the computer controller [1-ra 21 applies an optimal constant tension to the yarn 7 between the godet roller 2.3 and the winder 6 when the godet roller 2.3 and the winder 6 are increased or decelerated. The output is set so as to issue an output signal to the drive section of the godet roller 2.3 and the drive section of the winder 6. This output is generated according to a signal from the tension detection device 26 in a spindle drive type winder such as the present embodiment, and according to a preset needle line type in a surface drive type winder. Therefore it is set.

Such settings are within the capabilities of ordinary computers and can be easily accomplished by storing data, related formulas for speed, etc. in the computer.

The combination coater controller 21 further explains that even when the number of stages of godet rollers 2.3 is three stages, the thread tension between the godet rollers is too low and the thread is taken by the godet rollers, or conversely, the thread tension is too high. It is set to generate an output that applies tension to the yarn 7 so that the yarn runs normally without being cut too much.

In addition, the computer controller 21 receives the yarn breakage signal from the tension detection device 26 and outputs an output signal that simultaneously decelerates the Godet roller 2.3 and the σ winder 6 along a preset deceleration curve. The output is set to be output to the Godet roller 2.3 and the drive section of the winder 6. This preset deceleration curve is set in consideration of the inertia ↑4 of the Godet roller 2.3 and the bobbin 4, and is set to such a curve that the deceleration is mechanically reasonable and as quick as possible.

Further, the computer controller 21 controls the winding of the bobbin 4.5 when the speeds of the godet roller 2.3 and the winding machine 6 reach a predetermined production speed and the speed fluctuation falls within a predetermined range. Its output is set to emit a signal.

Furthermore, the computer controller [1-ra 21 receives the thread breakage signal from the tension detection device 26 and simultaneously decelerates the gear pump 1, godet roller 2.3, and winding machine 6 along a preset deceleration curve. The respective outputs are set to emit such output signals. This preset deceleration curve is set in consideration of the inertia of the gear pump 1, the Godet rollers 2.3, and the bobbin 4, so that the deceleration is mechanically reasonable and as quick as possible.

Furthermore, the combination coater controller 1 sets the output to issue a drive speed signal for the traverse device 19 according to the yarn winding speed of the winding machine 6 according to a preset h1 type or proportional load type. has been done.

The induction motor 11.12 of the godet roller 2.3 and the induction motors 13 and '14 of the separate roller 9.10 are provided with an inverter 29.30, and the output device of the computer controller 21 is connected to the inverter 29.30. As a result, the rotational speed of the Godet roller 2.3 is controlled in accordance with the output of the computer controller 21.

Similarly, the induction motor 15.1 of the bobbin 4.5 of the winder 6
6 is also provided with an inverter 31.32, and the output device of the combicotor controller 21 is connected to the inverter 31.3.
2, the circumferential speed of the winder 6 is controlled in accordance with the output of the computer controller 21. In this way, the rotational speed of the godet roller 2.3 and the rotational speed of the winder 6 are related to each other via the computer controller 21.

Therefore, the drive is controlled while maintaining an optimal relationship during increase and deceleration in response to changes in input conditions, and while applying an optimal tension to the thread 7 between the Godet roller 2.3 and the winder 6, for example.

The output device of the computer controller 21 is an inverter 33 provided in the induction motor 8 of the gear pump 1.
is connected to and b, and the vertical control is Godet roller 2.3
This is extended to driving not only the winder 6 but also the gear pump 1.

Note that the traverse device @19 also has the following features: the inverter 34 provided in the induction motor 20 of the traverse device 19 is connected to the output device of the computer controller 21;
It is controlled by a computer controller 21.

The swinging speed of the traverse device does not necessarily have to make the ridge angle during deceleration match the ridge angle during production speed, and may be a value lower than that during production speed.

In addition, although the case where the inverter 34 for the traverse device is installed in each winding machine has been described above, the inverter 34 is common to the entire winding machine and there is only one inverter 34.
If the regular production speed is set to m, the thread (1 to is mouth) is 1! Inverter for the bobbin on the side that is being loaded (for example,
If you are trying to load 11 threads onto the bobbin 4, use the inverter 32) to swing the traverse device - [! can be done. Then, when the production speed is reached, it is sufficient to switch to the inverter 34.

21
is connected to the center pin regulator 35. In this case, each weight can be controlled independently of each other under the control of the central computer 35.

The central computer 35 may be controlled by an even higher-level computer.

Next, the operation of the above device will be explained. is wound on winding 4. In this case,
Godet roller 2.3 and spindle 36 are shown in Figure 3.
It is driven as shown in area A in FIG. That is, under normal conditions, starting is started at T1, and threading to the bobbin 4 is performed at time 12 when the circumferential speeds G1 and G2 of the godet rollers 2.3 and the rotational speed P1 of the spindle 36 reach the threading speeds. , the thread hook is the rear godet roller 2.3, the production speed is S2,
Spindle 36 beam 1 production speed stone S1 (for example 60
00m/min). Cow production speed S
The bobbin 5 attached to the other spindle 37 whose speed has been increased to 1 is re-wound, and the product is manufactured from T3 at the time of this re-winding. During this speed increase, the rotation speed m between the body [l-ra 2.3 and the godet roller 3 and the winding machine] is controlled in a predetermined manner so that a predetermined tension is generated in the yarn. Therefore, the thread will not break or become loose. If the thread breaks during production, the thread will be hooked again at speed f.
The speed is reduced to Ws4, S3, and O, and after threading is completed, the speed is increased again to the production speed S2, Sl, and Sl.

In a silk reeling device as in the present invention, which is equipped with a control system for controlling the length of the yarn in the flow direction as well as the lengthwise direction, the above-mentioned increases and decelerations due to the start of production and yarn breakage are performed only when necessary. The increase/deceleration is performed at -18=, and the Sen's weight is not affected. That is,
In a conventional device with a horizontal control system, changing the speed of one weight would force a change in the speed of other weights, resulting in the spinning of all the weights becoming waste yarn, but in the present invention, the speed Generation of waste threads is limited to only the changed weights. This control may be performed by operating the controllers 21 of each weight independently of each other, or by a central computer 35 that controls the computer controllers 21 of each weight.
This is done by controlling the two independently of each other.

Furthermore, if a weight needs to be changed in speed, the change in speed can be quickly achieved. That is, in the apparatus of the present invention, which is controlled in the longitudinal direction, the speeds of the godet roller 2.3 and the winder 6 are optimally correlated with each other and changed by the computer controller 21, so that the speed S1 is lower than when each is changed. , S3, and deceleration are performed quickly.As a result, the time required to process the increase, deceleration, or malfunction occurrence is significantly reduced, and the amount of waste yarn generated is reduced.

Furthermore, by controlling the computer]nt [1-ra 21, the thread 7 between the body [1-ra 2.3 and the winding machine 6] and the body [1-ra 2. Since the tension of the yarn 7 between the la 2.3 is controlled,
It is also possible to prevent yarn breakage due to excessive tension tJ, or from the reverse phenomenon in which the yarn 7 becomes sagging due to J-4, and the occurrence of secondary problems is also prevented. In other words, tension control enables smooth and stable winding and speed changes. Furthermore, the winding stiffness of the yarn 7 on the bobbin 4 can also be adjusted by controlling the tension. These controls are achieved by the control of the computer controller 1-21.

Next, when changing the speed as described above, especially when the body [1
- The yarn 7 between the la 3 and the winding machine 6 has a body eye-la 3.
OJ, σ volume Jul<If the rotational speed of machine 6 goes out of order,
The tension of the yarn 7 is constantly detected by the tension detector 26, and this detected tension is always set as the preset optimum tension. ”nt[]-ra21
A speed command for the Godet roller 3 and the winding machine 6 is outputted so that the yarn tension becomes the optimum tension.According to this speed command, the Godet roller 3 and the winding machine are 60 rotation speed is precisely controlled.

Therefore, by this yarn tension feedback control, the speed change is performed smoothly without causing any trouble to the yarn, and since no trouble occurs to the yarn, the speed gradient of increase and deceleration can be set to an appropriate gradient. This allows problems such as thread breakage to be dealt with quickly and reliably.

In addition, when a thread breakage occurs during winding, the thread breakage is detected by the tension detector 26 as a thread breakage detector, and the signal is fed back to the rotation controller 21, as shown in FIG. J, and the peripheral speed Gl of the Godet roller 2.3 of the thread cutting weight, as shown in area B of FIG.
G2 and the rotational speed tαP1' of the spindle 36 of the winding machine 6 are the production speed s2, Sl and Sl, the threading speed is s4,
It is decelerated to s3 and O. This deceleration occurs only at the heel of the thread break and does not affect other pegs. Also,
This deceleration is caused by the yarn breakage signal to cause the body [1-ra 2.3 and the winding machine 6 to operate at T4 at the time of yarn breakage and at the same time along a preset optimal deceleration curve. And the bobbin 4 efficiently reaches the predetermined speed in a short time.

The roller around which the thread is wound is stopped to remove the thread if necessary. It is then restarted and rotated at yarn II) Lp speed.

The threading speed of the bobbin 4 mounted on the spindle 36 of the other rotational speed [P2 is increased to speed S3, and the threading is actually fM at the point -2'. The production speed of the restoration is increased to S1. Next, it is re-wound onto the bobbin 5 attached to the other spindle 37 (P2'), which has been increased in transparency to the production speed S1, and manufactured from the bottom 5 during this re-winding.

In addition, in the present invention, the present invention does not have to be applied to computer 1, but also to analog controllers and other controllers that have conventionally been commonly used in various fields.
- It can be applied if it meets the purpose.

[Effects of the Invention] As described above, when using the silk reeling apparatus of the present invention, the following various effects can be obtained.

(1) First, the rotational speeds of the godet roller and winder are controlled in relation to each other in the longitudinal direction, and the yarn tension between them can always be maintained at an optimal value, so there is no possibility of yarn breakage even when increasing or decelerating. It can prevent the occurrence of thread sagging, etc., and has a
Even in high-speed silk reeling of 00 m/min or higher, it is possible to achieve stable speed increase and deceleration in a short period of time, and to realize a high-speed practical production machine.

(2) Since it is a longitudinal control system that follows the thread feeding direction, it is possible to control each weight or each weight RY separately, and it is possible to limit changes in drive speed to the minimum number of weights necessary. drive equipment can be controlled in relation to each other,
Each device can be controlled quickly when increasing or decelerating.
The generation of waste threads and the like can be suppressed to a minimum amount. Furthermore, since it is controlled by a controller, it is possible to improve efficiency and make work easier.

(3) By controlling the speed of the Godet roller and winding machine to achieve the optimum yarn tension while feeding back the yarn tension between the Godet roller and the winding machine, more stable longitudinal control becomes possible. This makes it possible to deal with troubles and change lots more quickly, and to minimize the generation of waste threads.

(4) Furthermore, at the time of yarn breakage, it is possible to simultaneously efficiently decelerate the Godet roller of the yarn breakage generating weight and the winding machine along an optimal deceleration curve, and it is also possible to minimize the yarn breakage processing time.

[Brief explanation of the drawing]

FIGS. 1 and 2 are system diagrams of a silk spinning device according to an embodiment of the present invention, FIG. 3 is a rotational speed characteristic diagram of a godet roller in a silk spinning device according to an embodiment of the present invention, and FIG. 4 is a diagram of the rotation speed of a godet roller according to an embodiment of the invention. FIG. 5 is a diagram showing the rotational speed characteristics of a spindle of a winding machine in a silk reeling apparatus according to an embodiment of the present invention, and FIG. 5 is a system diagram of a conventional reel reeling apparatus. 1...Ki A7 Bon J 2.3...Body [-1-Ra4.5...
......Bobbin 6... Winder 7... Yarn 8.11.12.13.14.15.16.20...・
・・・・・・Yukigenmo 21・・・・・・・・・】nt [-1-ra 22.23.
24.25.......Pulse G-1 nelerator 26........ Chemical horn detection device 29.30.3
1.32.33.34...Inverter

Claims (1)

[Claims] (1) A controller that controls the rotational speed of the godet roller and the winding machine in relation to each other in the yarn feeding direction in a yarn spinning device that has a godet roller that takes up the yarn and a winder that winds up the yarn from the godet roller. A silk reeling device characterized by being provided with.