JPH0133219Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a strip winding device equipped with a belt trapper.

(Prior art) Conventionally, for example, Japanese Patent Publication No. 55-17651, Jikkosho
As disclosed in Publication No. 54-40441, this type of device has a belt wrapped around guide rolls rotatably supported by upper and lower arms to form a belt trapper, and this belt holds a spool for winding the strip. The strip is guided between the two to help wind the strip onto the spool.

These devices are designed to wind up the strip in the state shown in FIG.

That is, the point D where the tip of the strip 7 passes through the deflector roll 25, goes around the spool 8 approximately once, and begins to be wound between the following strip 7 and the spool 8 is located below the center O of the spool 8. (In the figure, the dashed line indicates the horizontal line.
The same applies to Figure 2. ) (Problem to be solved by the invention) As mentioned above, since the point D at which the tip of the strip 7 begins to be wound between the subsequent strip 7 and the spool 8 is below the center O of the spool 8,
It becomes difficult for the tip of the strip 7 to change its direction during winding. As a result, if the strip 7 is very thin, the tip will bend against the following strip 7, and when the strip 7 is wrapped over this bent part, a large number of layers will be formed in this part. A problem arises in that wrinkles occur over the area.

On the other hand, in order to prevent the thin strip from bending at the start of winding, a method has been proposed in which air is blown toward the spool so that the tip of the strip follows the spool. However, this method complicates the entire device and poses a problem in that blown air accumulates between the spool and the strip, resulting in the strip slipping and adversely affecting the winding tension control.

The present invention was developed in view of the problems of the conventional method, and is a strip winding method that allows the tip of a weak, ultra-thin strip to be wound along the spool without bending. The purpose of this project is to provide a device for collecting

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a belt that can be wound around the inner surface between the upper and lower arms so as to be able to be opened and closed, so that the tension can be adjusted. When the lower arm is closed, the belt is formed to hold a spool for winding a strip using the bottom winding method, and when holding the spool, it is positioned above the center of the spool and guided to the strip. The belt trapper is formed of a belt trapper, which may be provided with a guide roll, and a winding speed adjusting means for adjusting the winding speed of the spool by detecting changes in the tension of the strip entering the spool.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a strip winding device according to the present invention, which comprises a belt wrapper 1 and winding speed adjusting means 2. As shown in FIG. Of these, the belt trapper 1 includes an upper arm 3, a lower arm 4, an endless belt 5, and a belt tension arm 6, and is formed so that the belt 5 holds a spool 8 on which a strip 7 is wound. be.

That is, the upper arm 3 is supported by a hydraulic cylinder 13 above the spool 8 so as to be able to swing in forward and reverse directions about a shaft 12 on the frame 11, and a guide roll is rotatably attached to the tip of the upper arm 3. 14 are provided.

The lower arm 4 is connected to a hydraulic cylinder 16 below the spool 8 with the shaft 15 on the frame 11 as the center.
The guide rolls 17 and 18 are rotatably provided at two locations, one at the tip and another at an appropriate distance from the tip.

The belt tensioning arm 6 is connected to the shaft 1 on the frame 11.
It is supported by a hydraulic cylinder 20 so as to be able to swing in forward and reverse directions about 9, and two tension rolls 21 are rotatably provided at the tip thereof with an appropriate interval.

Further, five guide rolls are rotatably provided on the peripheral edge of the frame 11, and an endless belt 5 is wound around these, including the guide rolls 14, 17, 18 and the tension roll 21. . The tension of the belt 5 is adjusted by biasing the belt tensioning arm 6 with an appropriate force in a direction in which its tip moves away from the frame 11.

In addition, when the lower arm 4 is swung clockwise in FIG. 1 and the spool 8 is held in this position (the state shown by the solid line in FIG. 1), the guide roll 17 at the tip of the lower arm 4 is rotated clockwise in FIG. 8 (see FIG. 2).

On the other hand, two rolls in addition to a deflector roll 25 and a dancer roll 26 are rotatably provided on the strip entry side of the spool 8, and the length of the strip 7 between the deflector roll 25 and the spool 8 by the lower arm 4 is The dancer roll 26 is provided so as to absorb the change in the winding speed, thereby forming a winding speed adjusting device. That is, the dancer roll 26 is attached to the main body 27 of the detection unit so as to be able to detect fluctuations in the strip tension, and this detected value is fed back to the drive motor (not shown) of the spool 8 to control the rotational speed of the spool 8 and keep the tension constant. It is designed to maintain a

Next, the operation of the apparatus having the above configuration will be explained.

First, when starting to wind the strip 7, the upper arm 3 is swung toward the spool 8 to press the belt 5 from the top of the spool 8, while the lower arm 3
Keep the tip of the strip 7 away from the spool 8, guide the tip of the strip 7 between the spool 8 and the belt 5 of the lower arm 4, and
Reach point A near the bottom of the top.

When the tip of strip 7 passes through point A,
By swinging the lower arm 4 clockwise until it reaches point B, which is slightly around the top of the spool 8, the guide roll 17 at its tip is moved toward the spool 8, and the spool 8 is rotated. Position it above the center O. As the lower arm 4 swings, the length of the strip 7 between the deflector roll 25 and the spool 8 changes, but this change is absorbed by the vertical movement of the dancer roll 26, as described above.

As a result, even when the tip of the strip 7 passes through point B on the circumference of the spool 8, it does not leave the surface of the spool 8, and is wound up between the subsequent strip 7 and the spool 8, so that the tip of the strip 7 is not bent. It is wrapped along the line 8.

FIG. 2 shows the state in which the tip of the strip 7 is wound up by the following strip 7 in this device, and the point C at which it is wound is the spool 8.
is above the center O.

In the above embodiment, the belt 5 is also wound around the guide roll 17 at the tip of the lower arm 4, but the present invention is not limited to this, but also includes the belt 5 shown in FIG.

That is, even when the lower arm 4a of this strip winding device is swung clockwise, the tip of the belt 5 at that portion (indicated by T in the figure) is centered at the center O.
Although located at a lower position, a guide roll 17a is rotatably attached to the tip of the lower arm 4a on the outside of the belt 5 so as to be higher than the center O in this swinging state.
is provided so that the tip of the strip 7 is aligned with the spool 8 at the start of winding. In addition, the third
In the figure, other parts common to those in FIG. 1 are given the same reference numerals and explanations are omitted.

(Effects of the Invention) As is clear from the above description, according to the present invention, a guide roll is provided which is positioned above the center of the spool in the bottom winding system when the spool is held by the belt.

For this reason, the leading end of the strip that has begun to be wound onto the spool is wound along the spool by the following strip before it leaves the spool, and the leading end is bent and is not wound on top of it. This can prevent the occurrence of defective products.

Furthermore, compared to using air blowing means to prevent the tip of the strip from bending, the present invention can simplify the apparatus.

Furthermore, since a winding speed adjustment means is provided,
This has the effect of preventing the strip from breaking due to an increase in the tension of the strip at the start of winding.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a strip winding device according to the present invention, FIG. 2 is a partial side view for explaining the state of the device shown in FIG. 1 at the start of strip winding, and FIG. A schematic side view of another embodiment,
FIG. 4 is an explanatory partial side view showing the state when the conventional device starts winding up the strip. DESCRIPTION OF SYMBOLS 1... Belt trapper, 2... Winding speed adjustment means, 3... Upper arm, 4, 4a... Lower arm, 5
...Belt, 6...Belt tension arm, 7...Strip, 8...Spool, 17, 17a...Guide roll, O...Center of spool.

Claims (1)

[Claims for Utility Model Registration] (1) A belt is wound around the inner surface between the upper and lower arms so that the tension can be adjusted, and when the upper and lower arms are closed, the lower arm is wound by the belt. A belt trapper is formed to hold a spool for winding a strip of the strip type, and is provided with a guide roll that is positioned above the center of the spool and can guide the strip when holding the spool. 1. A strip winding device comprising winding speed adjusting means for detecting tension fluctuations in the incoming strip and adjusting the winding speed of the spool. (2) The strip winding device according to claim 1, wherein the guide roll is provided at the tip of the lower arm so as to be able to guide the belt.