JP2904312B2 - Winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for winding a long object.

[0002]

2. Description of the Related Art Conventionally, when a long object such as a plastic film or paper is to be wound, as shown in FIG. 11 is taken out and wound around a winding shaft through a guide roller 14 or the like.

In this case, in order to wind the long object 11 around the winding shaft with an appropriate tension, a dancer roller 15 is provided while the long object 11 is running, and the dancer roller 15 is provided.
A spring 16 capable of changing the tensile force is attached to the spring. When the tension of the long object 11 changes, the position of the dancer roller 15 changes. This change in position is detected by a potentiometer or the like. The rotation of the motor 13 and the like is controlled in accordance with the detected value, and the feeding speed of the long object 11 is changed.

In order to set the tension of the long object 11 during traveling, a spring scale is attached to the tip of the long object 11 with a tape or the like, and the spring 16 is set so that the scale of the spring scale has a predetermined value.
Moved by performing by setting the position of the dancer roller 15 changing the length of their.

[0005]

However, the conventional winding device cannot measure the tension during winding and must stop the device one by one in order to measure whether the tension is appropriate. The workability is poor and the measurement is more difficult than at the beginning of winding.

An object of the present invention is to improve the above-mentioned drawbacks and to provide a winding device capable of easily measuring the tension during winding of a long object.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a winding device for a long object, wherein a dancer roller is provided in the middle of the running of the long object, and is attached to the dancer roller. A winding device having a spring balance is provided.

[0008]

By attaching a spring balance to a dancer roller provided in the middle of the running of a long object, the force of the long object pulling the dancer roller can be measured with a spring balance, and the tension of the long object can be measured indirectly. That is, assuming that the tension of the long object is T, the force F applied to the dancer roller has a relationship of F = 2T. The value of F can be measured with a spring balance. Therefore, the tension of a long object can be determined by halving the value measured by the spring balance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
In FIG. 1, reference numeral 1 denotes a mounting shaft. Reference numeral 2 denotes a drive mechanism including a motor mounted on the mounting shaft 1. Reference numeral 3 denotes a long object such as a plastic film or paper wound around the mounting shaft 1. Reference numerals 4 and 5 are guide rollers provided in the middle of the running of the long object 3. Reference numeral 6 denotes a dancer roller provided between the guide rollers 4 and 5 in the middle of the long object 3. Reference numeral 7 denotes a spring balance attached to the dancer roller 6. 8 is
An arm attached to the dancer roller 6, and a potentiometer or the like is connected to the end 9. Then, a change in the position of the dancer roller 6 is detected by a potentiometer or the like attached to the end 9, and the operation of the drive mechanism 2 is controlled by the output signal.

Next, the operation of the above embodiment will be described. First, the drive mechanism 2 is operated, the mounting shaft 1 is rotated, and the long object 3 is paid out from the mounting shaft 1. Then, the unrolled long object 3 is wound around a winding shaft (not shown). Next, the spring balance 7
The scale was measured the force applied to the dancer roller 6, determine the tension during the running of the long object 3 1/2 that value, Ba
Move the balance to set the tension to a predetermined value. And run
When the tension of the long object 3 in the line changes, the position of the dancer roller 6 changes and the arm 8 attached thereto moves, and a signal for controlling the operation is transmitted to the drive mechanism 2 through a potentiometer or the like. As a result, the rotation of the motor or the like of the drive mechanism 2 becomes faster or slower, so that the speed at which the long object 3 is fed out changes, and the tension changes. Note that a signal from a potentiometer or the like may be transmitted to an electromagnetic derake or the like, and the drive mechanism 2 may be controlled by the electromagnetic brake or the like.

[0011]

As described above, according to the present invention, since the spring balance is attached to the dancer roller provided in the middle of the running of a long object, the wound element or the like is loosened or wound.
Running in each state
The tension of a long object inside can be easily measured from a spring balance, and the measurement
Depending on the set value, increase the tension of a long
Moving the device in the direction in which
It can be easily set so that it can be wound up in the correct state
A winding device is obtained. Also, take up long objects appropriately.
To meet various conditions such as width, thickness, and material of long objects,
Need to change the tension during the run,
If the type of long object changes, use the spring balance
To a size where tension cannot be measured or it is difficult to measure accurately
What happens is that different full scale spring balances
Needs to be replaced, but suitable range for spring balance
Are available on the market and are readily available.
Easy and high accuracy for long objects under various conditions
Thus, a winding device that can be used is obtained. Further, the present invention provides
Attach a spring balance to the dancer roller, and
Measures and controls the tension of long objects using displacement
To attach a spring scale separately from the dancer rollers.
No need for special rollers, simple structure, small size
Thus, it is possible to obtain a winding device that can be reduced in weight, weight, and cost.

[Brief description of the drawings]

FIG. 1 shows a mechanism diagram of an embodiment of the present invention.

FIG. 2 shows a mechanism diagram of a conventional winding device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mounting shaft, 2 ... Drive mechanism, 3 ... Long object, 6 ... Dancer roller, 7 ... Spring balance.

Claims (1)

(57) [Claims] 1. A winding device that rotates a mounting shaft around which a long object is wound by a driving mechanism and winds the long object around a winding shaft.
A winding device having a spring balance attached to the dancer roller.