JPH0671986B2 - How to operate the winder - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for operating a winder for winding a synthetic fiber yarn (hereinafter simply referred to as a synthetic fiber yarn). More specifically, the present invention relates to a method of operating a winder equipped with a contact roll suitable for high-speed winding and capable of winding a synthetic fiber yarn into a cheese-shaped wound body at a constant speed in a good winding shape.

[Problems to be solved by conventional technology and invention]

A winding machine for winding a cheese-shaped wound body generally has a bobbin shaft for winding a yarn and a contact roll for pressing a package. One of these bobbin shafts and contact rolls has a drive source, and the other has a bobbin shaft drive system and a surface drive system in which it is frictionally driven by the drive source via a wound body. Such a system has a drawback that a contact pressure is required to obtain a transmission power when frictionally driving, and an excessive contact pressure is not obtained in a high-speed winding, so that a good winding shape cannot be obtained. There is.

For example, according to Japanese Unexamined Patent Publication (Kokai) No. 50-83544, a method of gradually reducing the contact pressure during winding is proposed, but there is a limit to the contact pressure that can be gradually reduced during high-speed winding, and slippage between the contact local and the package is limited. In addition, there was a problem that a good winding shape could not be obtained with the contact pressure for obtaining the transmitted power.

The present invention solves the problems in the above-described conventionally known winding machine operating method, and provides a winding machine operating method capable of winding a cheese-shaped wound body in a good winding form. To aim.

[Means for solving problems]

An object of the present invention is to install a bobbin shaft on which a bobbin is mounted, the axis of which is arranged parallel to the axis of the bobbin shaft, and is arranged so as to come into contact with the surface of a yarn body that is being wound on the bobbin. A method of operating a winding machine, wherein the bobbin shaft and the contact roll are connected to respective driving devices, and the bobbin shaft is rotated at a circumference substantially equal to a set winding speed. After maintaining and rotating at a high speed, while setting the drive frequency of the contact roll to a value slightly higher than the frequency corresponding to the set winding speed and rotating it, the power consumption of the bobbin shaft drive device is brought into contact with the contact roll. And in the non-contact state, the output of the contact roll driving device is initially adjusted so that the power consumptions of both are almost equal, and thereafter the output of the contact roll driving device is maintained substantially the same. On the other hand, to increase the winding amount of the wound body There is achieved by a method of operating a winder for winding synthetic fiber yarn winding, characterized in that for increasing the output of the bobbin shaft driving device.

A value slightly higher than the frequency corresponding to the set winding speed of the contact roll drive frequency here means a value which is within 0 to 10% of the calculated frequency corresponding to the set winding speed. It means that it is more preferably set within the range of 3 to 5%.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing an embodiment of a winder for carrying out a method of operating a winder according to the present invention.

FIG. 1 shows a main configuration of a winder for carrying out the method for operating the winder according to the present invention. Prior to explaining the operation method of the winder of the present invention with reference to FIG. 1, problems in the conventional operation method of the winder will be clarified with reference to FIGS. 2 and 5.

FIG. 2 shows the overall structure of a winding machine for winding a yarn.
In FIG. 2, the winding yarn 13 supplied through the yarn guide 14 is traversed in the axial direction of the contact roll 5 by the traverse device 10 while passing through the rotating contact roll 5. The cheese-shaped wound body 3 is wound around the outer periphery of the bobbin 2 mounted on the rotating bobbin shaft 1. The thread 13 reciprocated by the traverse device 10 is decelerated and inverted at both ends of the wound body 3 and thus forms a yarn pool at both ends. That is, as is well known, the shape becomes so-called ear height.

Therefore, the wound yarn body 3 comes into contact with the contact roll 5 only at the edge portions 11, and the intermediate surface of the wound yarn body 3 is in a state having a gap Δh. In the conventional winding machine, the rotation is transmitted through the ear height portion 11.

FIG. 5 shows the action relationship of the force between the contact roll and the winding body during winding in the conventional bobbin shaft drive system. As shown in FIG. 2, since the contact roll 5 that comes into contact with the wound body 3 is frictionally driven by the circumferential surface of the ear-height portion 11, the circumferential surface of the ear-height portion 11 provides the rotational power of the contact roll 5. It is wound while receiving a resultant force c which is a combination of the reaction force a of the rotation transmission force and the contact pressure b when transmitting.

In particular, during high-speed winding, the rotational force of the contact roll 5 becomes large, and therefore the reaction force a becomes even larger and the winding shape is deteriorated. The inventors of the present invention thought that minimizing the above-mentioned reaction force a is essential for obtaining a good winding shape, and as a result of earnest studies, the present invention has led to the present invention. Contact pressure b in this case
Is a force necessary for transmitting the rotational power without slipping between the contact roll 5 and the winding body 3 and for holding the yarn path of the yarn wound around the cheese-shaped winding body.

Thus, in the operating method according to the present invention, by individually supplying the respective driving forces of the bobbin shaft 1 and the contact roll 5 required for the target winding speed, the rotation transmission force between the winding body 3 and the contact roll 5 is transmitted. By eliminating the reaction force a, it is possible to obtain a good wound body 3 having no bulge on the end face. Regarding the contact pressure b, it is possible to eliminate the contact pressure required to obtain the rotation transmitting force between the winding body 3 and the contact roll 5, and at least the yarn of the yarn wound around the cheese-shaped winding body. It has become possible to apply only the small contact pressure required for road maintenance.

As shown in FIG. 1, in one embodiment of the device for carrying out the operating method according to the present invention, the bobbin shaft 1 is connected to the bobbin shaft driving device 4 and further connected to the bobbin shaft driving inverter 8. ing. The bobbin shaft driving device 4 is
During winding, the deceleration must be controlled as the winding diameter of the wound body 3 increases. That is, the control detects the increase of the peripheral speed of the wound body 3 with the increase of the winding diameter by a known method, and the bobbin shaft drive inverter is controlled by a controller (not shown) so that the winding speed is set in advance. 8 is sent, and the frequency is controlled by the frequency control of the bobbin shaft drive inverter.

The known method for detecting an increase in the peripheral speed of the wound yarn body may be, for example, a contact roll rotation speed detection, a yarn tension detection, or any other detection method corresponding to the winding speed. It is not particularly limited.

The contact roll 5 is connected to the contact roll driving device 7 via the transmission device 6, and is further supplied with the above-mentioned frequency and driving force necessary for the rotation of the contact roll 5 by the contact roll driving inverter 9. . That is, the contact roll 5
At a constant winding speed, since it is necessary to always rotate at a constant rotation speed, the contact roll 5 is brought into a non-contact state with the bobbin 2 before the start of winding, and the contact roll and the drive inverter 9 rotate at a speed corresponding to the set winding speed. Adjust the frequency and driving force so that the number can be reached. During winding, this driving force is always supplied constantly, and no particular adjustment is necessary. In this way, by making each drive system self-driving, the bobbin shaft drive device 4, the rotation power of the bobbin body 3 wound around the bobbin shaft 1 and the bobbin 2 and the winding force including the take-up force of the yarn are wound. The contact roll driving device receives the driving force necessary for the rotation of the contact roll 5 via the transmission device 6 and winds the yarn 13 at a constant winding speed. The rotation transmission force between the wound body 3 and the contact roll 5 can be minimized.

Although the above driving conditions are basic, the object of the present invention can be sufficiently achieved when the driving force of the contact roll 5 is in the range of 75% to 125%. However, the frequency is 0 for the calculated frequency corresponding to the set winding speed as described above.
Should be set in the range of 10% above. In particular, in the case of a winding machine for a wound yarn body having a high end speed or a long winding width at a high speed, the reaction force a of the rotating force of the contact roll described above increases, so that the present invention is effective.

The contact roll driving device 9 shown in the embodiment of the present invention preferably uses a high-speed three-phase induction motor. This motor coupling system is not limited to the embodiment, and may be directly connected to the contact roll shaft, or may be incorporated in the contact roll and implemented by an outer rotor type. Further, an air turbine drive can be performed using a motor.

As a special example, Japanese Patent Application Laid-Open No. 52-21438 discloses a device for winding a bobbin at a constant circumferential speed, which is different from the purpose and use of the present invention.

Next, with reference to FIG. 3 and FIG. 4, the winding shapes of the wound body according to the conventional operating method and the operating method according to the present invention will be described. Third
As shown in the figure, in the conventional operating method, the wound body 3 has a crushed winding shape due to the above-mentioned large resultant force c, and end face bulges (hereinafter referred to as bulges) w are generated at both end faces, causing a defect. It has a simple winding shape. FIG. 4 shows that the wound body 3 wound by the operating method of the present invention has a good winding shape with a small bulge w even at the same traverse angle as the conventional operating method.

Conventionally, the winding angle in winding is set within the range of 5 ° to 7 °, and the lower the winding angle 12 (see FIG. 2), the more easily the bulge is generated. However, if the driving direction according to the present invention is adopted, even in the lower limit of the above-mentioned traverse angle range, the bulge can be reduced and a good winding shape can be obtained, and depending on the conditions, winding up to 5 ° or less is possible.

Therefore, by utilizing the above effect, the traverse speed can be reduced by lowering the traverse angle, thereby increasing the tension of the yarn in the traverse reversal portion, and by lowering the traverse device speed. It is possible to extend the service life (especially effective for the service life of the cam traverse device guide) and improve the yarn quality while reducing the fluctuation in tension.

〔The invention's effect〕

Since the operating method according to the present invention is configured as described above, when the synthetic fiber yarn is wound by the operating method according to the present invention, the following effects can be exhibited.

That is, it is possible to wind a cheese-like wound body having a good winding shape without bulging the end face of the synthetic fiber thread, which is particularly effective when winding at high speed on a multi-end or long winding width wound body. Is. Further, since the winding traverse angle can be made smaller than that of the conventional winding machine operating method, it is useful for extending the operating life of the traverse device and improving the yarn quality of the wound body.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configuration of the essential parts of an embodiment of a winder used to carry out the method for operating a winder according to the present invention, and FIG. 2 is a typical view of winding a yarn. FIG. 3 is a front view showing the overall configuration of the winding machine of FIG. 3, FIG. 3 is a partial cross-sectional front view of a winding body wound by a conventional winding machine operating method, and FIG. 4 is according to the present invention. It is a partial cross-sectional front view of the winding body wound by the operating method of the winding machine. FIG. 5 is an explanatory view showing the working relationship of the force between the contact roll and the winding body during winding by the conventional bobbin shaft drive system. 1 ... Bobbin shaft, 4 ... Bobbin shaft drive device, 5 ... Contact roll, 7 ... Contact roll drive device, 13 ... Yarn.

Claims (1)

[Claims] 1. A bobbin shaft on which a bobbin is mounted, an axis of the bobbin is arranged parallel to the axis of the bobbin shaft, and the bobbin shaft is arranged so as to come into contact with a surface of a yarn body being wound on the bobbin. In a method of operating a winder in which the bobbin shaft and the contact roll are connected to respective driving devices, the bobbin shaft is maintained at a peripheral speed substantially equal to a set winding speed. After rotating, the drive frequency of the contact roll is set to a value slightly higher than the frequency corresponding to the set winding speed and rotated, and then the power consumption of the bobbin shaft drive device is contacted with the contact roll and non-contact. The output of the contact roll driving device is initially adjusted so that both power consumptions are substantially equal, and thereafter the output of the contact roll driving device is maintained substantially the same, As the winding amount of the thread increases A method for operating a winder for winding a synthetic fiber yarn, characterized in that the output of a drive device for a bobbin shaft is gradually increased.