JPH0671991B2 - Striatal delivery / winding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a filamentous body feeding / winding device for feeding or winding a filamentous body with low tension, and particularly to a gravity-type dancer control type feeding / winding apparatus. The improved tension applying mechanism of the device is used for feeding or winding electronic wires, optical fibers, etc., which have been increasing in number in recent years.

[Prior Art] FIG. 3 and FIG. 4 show examples of two types of conventional low-strength filament feeders that use moving pulleys (dancer pulleys). Is rotated in the delivery direction (arrow direction) by the drive device 4 to deliver the filamentous body 1,
It is common in that it applies tension to them, but the tension applying means is different.

That is, the one shown in FIG. 3 is provided with a horizontal dancer pulley device 9 in which a dancer pulley 7 slidably mounted on a horizontally arranged guide shaft 6 is elastically held by a spring (not shown) with respect to a fixed pulley 8. The tension is applied to the filament 1 by using the spring. 4 includes a vertical dancer pulley device 13 that suspends the dancer pulley 10 with respect to a fixed pulley 11 in the direction of gravity, and uses the weight of the dancer pulley 10 itself and the weight 12 to apply tension by gravity.

However, the horizontal type shown in FIG. 1 has the following problems.

(1) Since the entire weight of the dancer pulley 7 is applied on the guide shaft 6 and the sliding friction of the dancer pulley 7 sliding on the guide shaft 6 is increased, the tension applied to the filamentous body varies greatly.

(2) If only low tension feeding is performed, it can be dealt with by making the dancer pulley 7 lighter and increasing the number of turns of the weak spring or the dancer pulley 7.
Further, when it is desired to reduce the change in tension, it is difficult to reduce the change in tension because a general spring is used in which the load changes when the elongation changes.

(3) Even if a special spring whose load does not change much even if the elongation changes is used, it is necessary to replace the spring each time to adjust the tension applied to the filament 1. It will occur, and it will not be possible to adjust the tension slightly.

The vertical type shown in FIG. 2 also had the following drawbacks.

(1) Since the dancer pulley 10 is suspended, a slide shaft is not required, and therefore, there is no fluctuation in tension due to friction as in the horizontal type. However, when sending out with a low tension, this can be done to some extent by increasing the number of turns of the dancer pulley 10, but further low tension sending is difficult because the weight due to the pulley increase is directly added as a tension.

(2) In order to finely adjust the tension, the weight 12
Since it is necessary to hold and manage a large number of items, workability is not good.

(3) Further, when it is desired to increase the absorption amount of the dancer pulley 10 or when using a stacking type delivery device for delivering a large number of filaments 1, a fixed pulley 11 and a dancer pulley are used.
Since the vertical distance to 10 is large, the height of the device becomes higher and the workability becomes worse than that of the horizontal type.

Further, as can be said in common with the ones shown in FIGS. 3 and 4, when a large number of filaments 1 are sent out, the characteristics of each sending device and the delicate tension due to the passing path after being sent out It was difficult to adjust or correct the difference (variation).

[Problems to be Solved by the Invention] As described above, with the horizontal dancer pulley device used as the tension applying means, low tension can be delivered and the device height can be low, but tension fluctuation due to friction and tension due to load The change is large and tension adjustment is difficult. On the other hand, in the case of using the vertical tans pulley device, although the tension fluctuation due to friction and the tension change due to the load are small, it is difficult to deliver low tension, the height of the apparatus becomes high, and the tension adjustment becomes difficult.

The problem with the horizontal type is that it uses a spring for the tensioning element, the friction between the guide shaft and the dancer pulley is large, etc., and in the vertical type, the total weight of the dancer pulley and weight is the direct tensioning element. That is the cause.

Therefore, the object of the present invention is to employ the good points of the horizontal and vertical dancer pulley devices, adopt the method of applying the gravity component of the dancer pulley and the weight as the tension applying means to remove the spring, and reduce the friction during the movement of the dancer pulley. It is therefore an object of the present invention to solve the above-mentioned drawbacks of the prior art, and to provide a filamentous body feeding / winding device which has a low tension, little fluctuation, and can be finely adjusted.

[Means for Solving Problems] In the filamentous body feeding / winding device of the present invention, the filamentous body is bridged between a fixed pulley and a movable pulley slidably provided along a guide shaft. Thus, the linear body is fed or wound while the tension is applied to the linear body by the load of the moving pulley and the added weight.

In such a configuration, the guide shaft is tilted in order to apply tension to the linear body and friction force to the guide shaft by the component force component thereof, not by the moving pulley and the weight load itself. It is attached so that it can be adjusted.

[Operation] Since the guide shaft is installed so as to be inclined, the load of the moving pulley and the weight is not applied to the linear body as tension as it is, but the component of the load in the direction of inclination of the guide shaft is the tension. Is added to the striatum. Therefore, the tension applied to the linear body decreases even with the same load. A component of the moving pulley and the weight load, which is orthogonal to the above-described inclination direction component, is a frictional force between the guide shaft and the moving pulley. Therefore, the friction is smaller than in the case where the moving pulley and the weight load all act as frictional forces.

Further, since the inclination angle of the guide shaft is adjustable, the inclination direction component changes when the inclination angle is changed, and the tension applied to the filamentous body is finely adjusted.

[Embodiment] The following will describe an embodiment of the present invention with reference to FIGS. 1 and 2.

FIG. 1 shows an example of a feeding device of a filamentous substance feeding / winding device of the present invention, which is equipped with an inclined type dancer pulley device which takes advantage of the vertical type and horizontal type dancer puller devices.

A bobbin 2 around which the filament 1 is wound is mounted on a shaft 2a rotatably incorporated in a frame 5, and the shaft 2a is rotated in the feeding direction of the filament 1 by a drive device 4 via a belt 3. A position sensor (not shown) detects a change in position of the dancer pulley 21, which will be described later. The detection signal controls the rotational speed of the drive unit 4 to determine the rotational speeds of the bobbin 2 and the shaft 2a so as to send out the filament 1. It has become.

The tension applied to the linear body 1 thus sent out is adjusted by the inclined dancer pulley device 20 provided at the rear stage of the bobbin 2. The inclined type zansa pulley device 20 includes a fixed pulley 22 and a dancer pulley 21 attached to the frame 5. The dancer pulley 21 is arranged such that the straight line connecting the rotation axis of the dancer pulley 21 and the rotation axis of the fixed pulley 22 is neither horizontal nor vertical. The dancer pulley 21 is slidable in the direction of the fixed pulley 22, and the angle adjustment bolt 23 allows the inclination angle to be changed.
The filament 1 sent out from the bobbin 2 is stretched between the fixed pulley 22 and the dancer pulley 21 and tension is applied by the load of the dancer pulley 21 and the weight.

As shown in FIG. 2, the structure of the dancer pulley portion 20 is such that the guide shaft 24 is attached to the frame 5 by the support pins 26 via the substrate 5 and rotates about the support pins 26. This rotation angle is adjusted, for example, by turning an angle adjusting bolt 23 screw-fitted to the board portion on the side opposite to the support pin 26 as shown in the figure.

A dancer pulley 21 on which a weight 27 can be mounted is mounted on the guide shaft 24 so as to be slidable and rotatable via a slider 29 in which a bearing 28 is fitted.

A fixed pulley 22 is rotatably attached to the frame 5 in front of the dancer pulley 21. Although the case where the number of the fixed pulleys 22 is two and the number of the dancer pulleys 21 is one is illustrated here, the number is not limited to this.

Now, in the above configuration, when the inclination angle of the guide shaft 24 with respect to the horizontal direction is θ, the dancer pulley 21
The component P of the linear tension applied to the total weight W of the weight 27 and the total load W of the weight 27 and the component Q of the frictional force between the dancer pulley 21 and the guide shaft 24 are given by the following equations.

P = Wsin θ Q = Wcos θ That is, the total load W acting in the gravity direction is divided into a sin component and a cos component.

Since the component P in the direction of tension addition of the linear body becomes a sin component of the total load W and becomes smaller than W, it is the same as the vertical dancer pulley device in which all of the total load becomes the component in the direction of tension of the linear body. Since the dancer control tension can be reduced even with the total load, an extremely low tension can be applied to the linear member without increasing the number of turns of the dancer pulley, in other words, without increasing the dancer pulley.

Further, since the frictional force direction component Q becomes a cos component of the total load W and becomes smaller than W, compared to a horizontal dancer pulley device in which all the total load becomes a frictional force direction component, even with the same total load, the guide shaft Since the sliding frictional force of the dancer pulley 21 on the shaft 24 can be reduced, it is possible to reduce the amount of tension fluctuation due to the frictional force.

By the way, the tension is adjusted by the dancer pulley 21 or the weight.
Replace with 27. The filament tension at that time is determined by the inclination angle θ of the guide shaft 24 as described above.

In particular, when the reference of the inclination angle θ of the guide shaft 24 of the dancer pulley 21 is set to 30 °, the component P in the direction of tension application to the linear body 1 becomes 1/2 of the total load W, and the linear body tension is 1
In the case of this embodiment using a single piece of dancer pulley 21, it can be reduced to 1/4, and since it is given in a clean fraction, it is very convenient for the management of the weight 27.

On the other hand, the fine adjustment of the tension is performed by changing the inclination angle θ of the guide shaft 24. That is, when the angle adjusting bolt 23 is turned, the guide shaft 24 is turned clockwise or counterclockwise about the support pin 26 in accordance with the turning direction and the amount thereof, and the tilt angle θ with respect to the horizontal direction is changed. Therefore, the magnitude of the component in the direction of tension application to the linear body 1 can be finely adjusted in either the increasing or decreasing direction by changing this θ. Since the fine tension can be adjusted in this way, it is not necessary to hold and manage many weights like a vertical dancer pulley device, and unlike the vertical or horizontal dancer pulley device, when sending out a large number of filaments, It is also very easy to adjust or correct the slight difference in tension due to the characteristics of each of the delivery devices and the passage route after being delivered.

Further, since the dancer pulley is of an inclined type, it is possible to take a large distance from the fixed pulley 22 in order to increase the absorption amount of the dancer pulley, or to use a stacking type delivery device for delivering multiple filaments. The vertical distance between the fixed pulley and the dancer pulley is smaller than that of the vertical type, so that the height of the device is not increased and the workability is not deteriorated.

It should be noted that, although the present embodiment has been described only as a device for feeding the filamentous body in the above-described embodiment, the present device can be applied to a low tension winding device having the same configuration.

[Effects of the Invention] In short, according to the present invention, the guide shaft is inclined to reduce the tension applied to the linear body due to the load of the moving pulley and the friction with the guide shaft, and the inclination angle of the guide shaft is changed to change the line. Since the tension applied to the strip can be adjusted, it has an excellent effect that the tension is low and the fluctuation is small, and the tension can be finely adjusted.

[Brief description of drawings]

FIG. 1 is a front view of a feeding device of a filamentous substance feeding / winding device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIGS. It is a front view of the conventional filamentous-body delivery apparatus. In the figure, 1 is a linear body, 21 is a dancer pulley (moving pulley),
22 is a fixed pulley, 23 is an angle adjusting bolt, 24 is a guide shaft, 26 is a support pin, and 27 is a weight.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Osamu Nemoto 5-1-1 Hidaka-cho, Hitachi-shi, Ibaraki Hitachi Cable Engineering Co., Ltd. (72) Inventor Yasuhiko Suzuki 5-1-1 Hidaka-cho, Hitachi-shi, Ibaraki No. 1 Hitachi Cable Co., Ltd. Hidaka Plant (72) Inventor Kenji Ishii 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture Hitachi Cable Co., Ltd. Hidaka Plant

Claims (1)

[Claims] 1. A linear member is stretched between a fixed pulley and a movable pulley slidably provided along a guide shaft, and tension is applied to the linear member by the load of the movable pulley and the weight added thereto. In order to separate the moving pulley and the weight load into a linear tension applying direction component and a friction direction component orthogonal to the guide shaft in a linear body feeding / winding device for feeding or winding the linear body while adding A filamentous body feeding / winding device characterized in that the guide shaft is tilted and the tilt angle thereof is adjustable.