JPH0597296A - Roll device for taking up film - Google Patents

Abstract

PURPOSE:To equalize a pushing pressure for the bobbin of a pushing roll to get a good winding quality in the taking-up of a web. CONSTITUTION:A web 20 is taken up around a bobbin 5. The surface of the web 20 wound around the bobbin 5 is push-pressed by a pushing roll 8 across its entire width. A backup roll 9 is arranged so as to be contacted with the entire surface of the pushing roll 8. The surface of the pushing roll 8 is pressurized partially by a divided roll 1 so that a part of surface of the web 20 can be push-pressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film winding roll device for winding a resin film on a bobbin.

[0002]

13 and 14 are a front view and a side view showing a schematic structure of a conventional film winding roll device.
Referring to these figures, the film winding roll device is
It is composed of a pressing roll unit 6, a cylinder 7 and a drive shaft 11. The bobbin 5 is inserted in the drive shaft 11. The bobbin 5 has a cylindrical shape. A web (resin film) 20 is wound around the outer peripheral surface of the bobbin 5. The drive shaft 11 can be driven by a motor (not shown). The pressing roll unit 6 includes a pressing roll 8 and
It comprises a backup roll 9 and a frame 10. The frame 10 is U-shaped. The pressing roll 8 is provided near the tip of the arm portion 10a of the frame 10.
Is rotatably mounted. Rubber is attached to the surface of the pressing roll 8. A backup roll 9 is rotatably attached to the frame 10 on the base portion 10b side of the pressing roll 8. This backup roll 9 is made of metal. The rotation axes of the pressing roll 8 and the backup roll 9 are parallel to each other. The roll surfaces of the pressing roll 8 and the backup roll 9 are in contact with each other. As a result, the load received by the pressing roll 8 from the web 20 is also transmitted to the backup roll 9. Cylinders 7 are attached to both ends of the base portion 10b. The cylinder 7 is fixed to the outer wall. The pressing roll portion 6 can be moved in the direction of arrow A by the cylinder 7. The pressing roll 8 of the pressing roll unit 6 is pressed against the bobbin 5 so that the rotation axis is parallel to the bobbin 5. Therefore, the roll surface of the pressing roll 8 is in contact with the surface of the web 20.

In this way, the conventional film winding roll device is constructed. The web 20 is wound around the bobbin 5 of the film winding roll device. This web 2
0 is sandwiched between the bobbin 5 and the pressing roll 8.

Next, the operation of the conventional film winding roll device will be described. With reference to FIG. 14, the drive shaft 11
Is rotated by a motor. Since the bobbin 5 is fixed to the drive shaft 11, the bobbin 5 rotates in the direction of arrow 31 in conjunction with the drive shaft 11. By rotating the bobbin 5, the web 2
0 is wound on the outer peripheral surface of the bobbin 5. On the other hand, web 2
The pressing roll 8 is pressed against the bobbin 5 so that the surface of the pressing roll 8 comes into close contact with the surface of 0. Therefore, the pressing roll 8 rotates in the direction of the arrow 32 in conjunction with the rotation of the bobbin 5. At the same time, the backup roll 9 rotates in the direction of arrow 33. As the web 20 is wound around the bobbin 5, the outer diameter of the web 20 gradually increases. The position of the press roll portion 6 is controlled by the cylinder 7 according to the outer diameter of the web 20. For this reason, the pressing roll 8 is provided with the web 20 wound around the bobbin 5.
The surface of is always kept pressed. Further, the backup roll 9 presses the pressing roll 8 in an auxiliary manner. The position of the pressing roll 8 with respect to the bobbin 5 is adjusted by the cylinder 7.

[0005]

In the film winding roll device, both ends of the pressing roll 8 are supported by the frames 10. Therefore, when the pressing roll 8 is pressed against the bobbin 5, the core bends. As a result, the pressing force of the pressing roll 8 on the web 5 is large near both ends in the width direction of the contact region between the pressing roll 8 and the web 20, and the pressing force is small at the central portion. That is, in the contact area, the pressing force of the pressing roll 8 on the bobbin 5 becomes uneven in the width direction.

In the conventional film winding roll device as described above, in order to improve the unevenness of the pressing force, rubber is attached to the surface of the pressing roll 8 and the backup roll 9 is provided as an auxiliary to the pressing roll 8. The method is adopted. However, even if this method is adopted, the non-uniformity of the pressing force is slightly alleviated, and the core of the pressing roll 8 is still bent. Therefore,
The conventional film winding roll device has a problem that the pressing force cannot be made uniform in the entire contact area.

The present invention has been made to solve the above-mentioned problems, and in winding the web, in order to obtain good winding quality, the pressing force of the pressing roll against the bobbin is made uniform. With the goal

[0008]

A winding roll device according to a first aspect of the present invention is a winding roll device for winding a belt around a rotary shaft, the first roll being a first roll. And a second roll. The first roll presses its surface over the entire width of the strip wound around the axis of rotation. The second roll partially presses the surface of the first roll so as to press a part of the surface of the strip.

A winding roll device according to a second aspect of the present invention is a winding roll device for winding a strip around a rotary shaft, the first roll and the second roll. And a third roll. The first roll presses its surface over the entire width of the strip wound around the axis of rotation. The second roll is arranged so as to contact the entire surface of the first roll. The third roll partially presses the surface of the second roll so as to press a part of the surface of the strip.

[0010]

When the first roll presses the entire width of the strip wound around the rotation axis, the core of the first roll bends. For this reason, the pressing force of the first roll on the rotating shaft becomes non-uniform.

A film winding roll device according to a first aspect of the present invention includes a second roll which partially presses the surface of the first roll so as to press a part of the surface of the strip. This second roll partially pressurizes the first roll. As a result, it becomes possible to apply a pressing force to the contact area between the first roll and the rotary shaft which is on the extension line of the pressing direction. Therefore, by adjusting the pressing force of the second roll, the pressing force of the first roll in the width direction with respect to the rotation axis can be made uniform.

In the film winding roll device according to a second aspect of the present invention, the second roll is arranged so as to contact the entire surface of the first roll, and the first roll is pressed so as to press a part of the surface of the strip. A third roll is provided that partially pressurizes the surface of the second roll. This second roll secondarily suppresses the deflection of the core of the first roll. The third roll also partially presses the second roll. As a result, it becomes possible to apply a pressing force to the contact area between the first roll and the rotating shaft on the extension line of the pressing direction.
Therefore, the second roll totally suppresses the deflection of the core of the first roll, and the third roll,
Partially adjust the deflection of the core of the first roll. Therefore, by adjusting the pressing forces of the second roll and the third roll, it becomes possible to make the pressing force of the first roll in the width direction with respect to the rotation axis uniform.

[0013]

1 and 2 are a front view and a side view conceptually showing the structure of a film winding roll device according to a first embodiment of the present invention. With reference to these drawings, the roll structure of the film winding roll device is composed of a bobbin 5, a pressing roll 8, a backup roll 9 and a split roll 1. A web 20 is wound around the bobbin 5. When the pressing roll 8 is pressed against the bobbin 5 when the split roll 1 is not provided as in the conventional example, the core of the pressing roll 8 bends in the width direction of the pressing roll 8 with respect to the bobbin 5. The pressing force becomes uneven. Therefore, in this embodiment, in order to apply the pressure to the region where the pressing force of the pressing roll 8 against the bobbin 5 is small, the split roll 1 moves in the direction of arrow A and the backup roll 9
Is mounted so as to press. When the split roll 1 presses the backup roll 9, it becomes possible to apply a pressing force to the contact area between the pressing roll 8 and the bobbin 5 on the extension line of the pressing direction. In this way, the split roll 1 is provided at the optimum position and pressed with the optimum pressure, whereby the bobbin 5 of the pressing roll 8 is pressed.
The pressing force against can be made uniform. Even if the backup roll 9 shown in FIGS. 1 and 2 is not provided as in the second embodiment shown in FIGS. 3 and 4, by providing the split roll 1, the same effect as described above can be obtained.

FIGS. 5 and 6 are a front view and a side view specifically showing the schematic structure of the film winding roll device according to the first embodiment of the present invention. With reference to these figures, the film winding roll device is composed of a pressing roll portion 6, a cylinder 7
And a drive shaft 11. This drive shaft 11
The bobbin 5 is inserted in the. The bobbin 5 has a cylindrical shape. A web 20 is wound around the outer peripheral surface of the bobbin 5. The drive shaft 11 can be driven by a motor (not shown). The pressure roll unit 6 is composed of a split roll 1, a pressure roll 8, a backup roll 9, and a frame 10. The frame 10 has a U shape. A pressing roll 8 is rotatably attached near the tip of the arm portion 10a of the frame 10. Rubber is attached to the surface of the pressing roll 8. A backup roll 9 is rotatably attached to the frame 10 on the base portion 10b side of the pressing roll 8. This backup roll 9 is made of metal. The rotation axes of the pressing roll 8 and the backup roll 9 are parallel to each other. Press roll 8 and backup roll 9
The roll surfaces of are in contact. This allows the web 20
The load received by the pressing roll 8 is also transmitted to the backup roll 9.

The split roll 1 comprises a roll 2, a frame 3 and a cylinder 4. Rubber is attached to the surface of the roll 2. The roll 2 is supported and fixed to the frame 3. Frame 3 is cylinder 4
Installed on. This cylinder 4 has a base 10
It is fixed to b.

Cylinders 7 are provided on both ends of the base portion 10b.
Is installed. This cylinder 7 is fixed to the outer wall. By the cylinder 7, the pressing roll portion 6
Is movable in the direction of arrow A. The pressing roll 8 of the pressing roll unit 6 is pressed so that the rotation axis is parallel to the bobbin 5. Therefore, the roll surface of the pressing roll 8 is in contact with the surface of the web 20.

Thus, the film winding roll device according to the first embodiment of the present invention is constructed. The operation of the film winding roll device will be described below.

Referring to FIGS. 5 and 6, first, the drive shaft 11
Is rotated by the motor. The bobbin 5 has a drive shaft 11
Since it is fixed to the
Rotate in one direction. The web 20 is wound around the outer peripheral surface of the bobbin 5 by the rotation of the bobbin 5. On the other hand, the pressing roll 8 presses the bobbin 5 so that the surface of the pressing roll 8 comes into close contact with the surface of the web 20. Therefore, the pressing roll 8 rotates in the direction of the arrow 32 in conjunction with the rotation of the bobbin 5. At the same time, the backup roll 9 rotates in the direction of arrow 33. Web 2
As web 0 is wound on bobbin 5, web 20 gradually
The outer diameter of is increased. The position of the press roll portion 6 is controlled by the cylinder 7 according to the outer diameter of the web 20. Therefore, the press roll 8 is kept in a state of always pressing the surface of the web 20 wound around the bobbin 5.
Further, the backup roll 9 presses the pressing roll 8 in an auxiliary manner. Further, by the position adjustment of the roll 2 and the frame 3 by the cylinder 4, the split roll 1 partially presses the backup roll 9. As a result, the pressing force of the pressing roll 8 against the bobbin 5 is partially applied on the extension line of the pressing direction of the split roll 1.

7 and 8 are a front view and a side view of a film winding roll device according to a second embodiment of the present invention.
With reference to these figures, the film winding roll device is composed of a pressing roll unit 6, a cylinder 7 and a drive shaft 11. The structures of the cylinder 7 and the drive shaft 11 are almost the same as those of the first embodiment shown in FIGS. 5 and 6, and therefore the description thereof will be omitted. The press roll portion 6 is composed of a split roll 1, a press roll 8 and a frame 10. This structure is the same as the structure obtained by removing the backup roll 9 from the first embodiment shown in FIGS. Since the backup roll 9 is removed, the roll 2 of the split roll 1 directly presses the pressing roll 8 in the arrow A direction.

Thus, the film winding roll device according to the second embodiment is constructed. Next, the operation of the film winding roll device according to the second embodiment will be described.

The operation is almost the same as that of the first embodiment shown in FIGS. However, since the backup roll 9 is removed, the pressing roll 8 is directly and partially pressed by the split roll 1. As a result, the pressing force of the pressing roll 8 on the bobbin 5 is partially applied on the extension line of the pressing direction of the split roll 1.

In the above-mentioned two embodiments, one roll is shown, but there may be two or more rolls. Further, although the resin film is used as the web 20, a metal having good workability such as Al may be used. Furthermore, press roll 8
I put rubber on the surface of the, but did not scratch the web 20,
Further, any material may be used as long as it is an elastic material that alleviates uneven pressing force.

Next, a method of controlling the pressing force of the bobbin 5 and the pressing roll 8 according to the second embodiment shown in FIGS. 7 and 8 will be described.

9 to 12 are front views of the film winding roll device schematically showing the control means according to the second embodiment.

First, referring to FIG. 9, the pressing force of the pressing roll 8 on the bobbin 5 in the width direction is determined by the pressing force detecting device 2
Detected by 01. This confirms a region where the pressing roll 8 presses the bobbin 5 with a low pressing force.
The split roll 1 is manually moved to the region where the pressing force is low.

Next, referring to FIG. 10, the split roll moving device 202 is added to the control means shown in FIG. The pressing force detection device 201 uses the bobbin 5 of the pressing roll 8.
After detecting the pressing force against, according to the pressing force,
The split roll moving device 202 automatically moves the split roll 1 to a position where the pressing force is low.

With reference to FIG. 11, a pressing amount setting device 203 is added to the control means shown in FIG. After the pressing force detection device 201 detects the pressing force of the pressing roll 8 against the bobbin 5, the split roll moving device 202
The split roll 1 is automatically moved to the position where the contact pressure is low. By the pressing amount setting device 203, the pressing force of the pressing roll 8 on the bobbin 5 becomes uniform in the width direction,
The pressing force of the split roll 1 is set.

Referring to FIG. 12, the bobbin 5 of the pressing roll 8 is set by the pressing amount setting device 203 shown in FIG.
The force of pressing is adjusted. As a result, first, the pressing force detection device 201 detects the pressing force of the pressing roll 8 against the bobbin 5, and then the split roll moving device 202 moves the split roll 1 to the position where the contact pressure is low. Further, after the pressing force is detected by the pressing force detection device 201, the pressing amount setting device 203 can adjust the pressing force of the pressing roll 8 against the bobbin 5 and the pressing force of the split roll 1 against the bobbin 5. Therefore, the pressing roll 8 presses the bobbin 5 with the optimum pressing force as a whole, and the split roll 1 can press the part of the pressing roll 8 having a low pressing force against the bobbin 5 with the optimum pressing force.

In the above four control methods, one division roll is shown, but there may be two or more division rolls.

[0030]

In the film winding roll device according to the first and second aspects, the roll that partially applies the pressing force to the region where the pressing force in the width direction with respect to the rotation axis of the first roll is low. It is provided. This makes it possible to make the pressing force of the first roll on the rotating shaft uniform in the width direction.

[Brief description of drawings]

FIG. 1 is a front view conceptually showing the structure of a film winding roll device according to a first embodiment of the present invention.

FIG. 2 is a side view conceptually showing the structure of the film winding roll device according to the first embodiment of the present invention.

FIG. 3 is a front view conceptually showing the structure of a film winding roll device according to a second embodiment of the present invention.

FIG. 4 is a side view conceptually showing the structure of a film winding roll device according to a second embodiment of the present invention.

FIG. 5 is a front view specifically showing a schematic configuration of the film winding roll device according to the first embodiment of the present invention.

FIG. 6 is a side view specifically showing a schematic configuration of the film winding roll device according to the first embodiment of the present invention.

FIG. 7 is a front view specifically showing a schematic configuration of a film winding roll device according to a second embodiment of the present invention.

FIG. 8 is a side view specifically showing a schematic configuration of a film winding roll device according to a second embodiment of the present invention.

FIG. 9 is a front view of a film winding roll device schematically showing a first control means according to a second embodiment.

FIG. 10 is a front view of a film winding roll device schematically showing a second control means according to a second embodiment.

FIG. 11 is a front view of a film winding roll device schematically showing a third control means according to the second embodiment.

FIG. 12 is a front view of a film winding roll device schematically showing a fourth control means according to a second embodiment.

FIG. 13 is a front view specifically showing a schematic configuration of a conventional film winding roll device.

FIG. 14 is a side view specifically showing a schematic configuration of a conventional film winding roll device.

[Explanation of symbols]

 1 Split roll 8 Holding roll 9 Backup roll

Claims (2)

[Claims] 1. A winding roll device for winding a strip around a rotary shaft, comprising: a first roll that presses the surface of the strip around the rotary shaft over the entire width thereof. A film winding roll device, comprising a second roll or the like for partially pressing the surface of the first roll so as to press at least a part of the surface of the strip. 2. A winding roll device for winding a strip around a rotary shaft, comprising: a first roll that presses the surface of the strip around the rotary shaft over the entire width thereof. A second roll disposed so as to contact the entire surface of the first roll, and a part of the surface of the second roll so as to press at least a part of the surface of the strip. A film winding roll device, comprising a third roll for pressing.