JP2003019454A - Apparatus for manufacturing tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape manufacturing apparatus in which generator of static electricity is suppressed on a base film. SOLUTION: A back roll 20 is arranged and rotary-driven so that the roll 20 is always abutted on the first surface of the base film 12 and moved between a engage position (A) where the second surface of the film 12 is pressed to the outer peripheral surface of a gravure roll 24 and an release position (C) where the second surface of the film 12 is separated from the outer peripheral surface of the gravure roll 24. A nip roll 22 is arranged oppositely to the roll 20 while the film 12 is interposed between them so that the roll 22 can be rotary-driven by the roll 20 in such a state that the first surface of the film 12 is pressed to the roll 20 and moved between the position (A) and a release position (B) where the pressing of the film 12 to the roll 20 is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape manufacturing apparatus for applying a coating material on a base film.

[0002]

2. Description of the Related Art There is a tape manufacturing apparatus for applying a coating material such as a back coat material on the surface of a base film. As shown in FIG. 7A, the tape manufacturing apparatus includes a guide roll 100, a back roll 102, and a nip roll 10.
4, a gravure roll 106, a kneader roll 108, a guide roll 110, and the like. The back roll 102, the gravure roll 106, and the kneader roll 108 are rotationally driven in the arrow direction. The outer peripheral surface of the back roll 102 is the base film 1
01 is provided so as to be always in contact with one surface.
The nip roll 104 is the base film 101.
Of the base film 101, and the one face of the base film 101 is placed on the back roll 102.
It is provided so as to be driven and rotatable while being pressed against. The gravure roll 106 is arranged such that its outer peripheral surface faces the other surface of the base film 101, and the coating material is supplied to the outer peripheral surface. The kneader roll 108 is arranged so that its outer peripheral surface abuts on the outer peripheral surface of the gravure roll 106.
The application of the coating material to the base film 101, that is, the supply of the coating material to the base film 101 is performed by sandwiching the gravure roll 106 on one surface of the base film which is sandwiched between the back roll 102 and the gravure roll 106 and runs. This is performed by applying the coating material on the outer peripheral surface.

[0003]

In the conventional tape manufacturing apparatus thus constructed, as shown in FIG. 7A, when the coating material is applied to the base film 101, Static electricity is generated on the base film 101 running in the direction of the arrow by peeling from the outer peripheral surface of the back roll 102. This static electricity escapes via the gravure roll 106. However, as shown in FIG. 7B, when the application of the coating material to the base film 101 is stopped, the back roll 102 is set to the gravure roll 1.
It is separated from 06. At this time, the static electricity generated in the base film 101 cannot escape to the gravure roll 106, so that the static electricity is accumulated in the base film 101 and large static electricity is generated. When such static electricity is generated, there is a disadvantage that workability is deteriorated. The present invention is intended to solve such a problem of the conventional art, and an object thereof is to provide a tape manufacturing apparatus capable of suppressing the generation of static electricity generated in a base film. .

[0004]

In order to achieve the above object, the present invention provides a tape manufacturing apparatus for applying a coating material to the surface of a strip-shaped base film running from the upstream side to the downstream side. A back roll that is rotationally driven while being constantly in contact with a first surface that is one surface of a base film, and a back roll that faces a second surface that is the other surface of the base film and that sandwiches the base film. And a nip roll provided so as to be driven and rotatable while the first surface of the base film is pressed against the back roll, and a second surface of the nip roll facing the second surface of the base film. And is disposed so as to face the back roll with the base film interposed therebetween, and is driven to rotate while the first surface of the base film is pressed against the back roll, and the first surface of the base film is moved toward the second surface. A gravure roll for supplying a coating material, the back roll, and a closed position for pressing the second surface of the base film to the gravure roll,
In a tape manufacturing apparatus configured to be movable between an open position that separates the second surface of the base film from the gravure roll, a pressing position that presses the nip roll against the back roll and the base. Nip roll moving means for moving between a release position for releasing the pressing of the film to the back roll is provided, and the nip roll moving means is interlocked with the back roll being moved from the closed position to the open position. The nip roll is configured to move from the pressing position to the releasing position.

Therefore, in the present invention, the nip roll is separated from the base film by moving the nip roll from the pressing position to the releasing position in conjunction with the movement of the back roll from the closed position to the open position. Therefore, the force with which the base film is pressed against the back roll is reduced, and the generation of static electricity generated in the base film when separated from the outer peripheral surface of the back roll is suppressed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is an explanatory diagram showing the configuration of the tape manufacturing apparatus according to the embodiment of the present invention. The tape manufacturing apparatus 10 includes one surface of the base film 12 (hereinafter referred to as a second surface).
First processing unit 1 for applying a back coat material to the surface)
0A and the other surface of the base film 12 (hereinafter referred to as the first
Second processing portion 10B for applying a magnetic material to the base film 12 and the first processing portion 10B.
A is configured to travel in the order of the second processing unit 10B. Since the present invention is applied to the first processing unit 10A, the first processing unit 10A will be described below. The first processing unit 10 </ b> A is disposed along the running direction of the base film 12 from the upstream side to the downstream side, and includes a first transport roll 14, a driven roll 16, and a first tension adjusting unit 18.
A, back roll 20, nip roll 22, gravure roll 24, kneader roll 26, tension detector 28 (first
Tension detecting means), second transport roll 30 (transport roll),
The dryer 32 and the second tension adjusting means 18B are provided, and these are operated under the control of the control means 36. In addition,
Since FIG. 2 is illustrated in a simplified manner to explain the control relationship between these parts, the positional relationship between the parts is different from the actual positional relationship.

The first transport roll 14 and the driven roll 16
Are provided so as to sandwich the base film 12, and are configured to give a conveying force to the base film 12 when the first conveying roll 14 is rotationally driven. The first
The transport roll 14 is configured to be rotationally driven by a first transport roll motor 1402 (FIG. 4) whose rotation speed is controlled by the control means 36.

The first tension adjusting means 18A is disposed upstream of the back roll 20 and the nip roll 22 and downstream of the first transport roll 14,
It has the same structure as the second tension adjusting means 18B.
That is, the first and second tension adjusting means 18A, 18B
3, a dancer roll 1806 rotatably supported at one end of a lever 1804 swingably supported on the apparatus side at a fulcrum 1802 and a position detection for detecting the position of the other end of the lever 1806 as shown in FIG. Device 1808 and an actuator 1810 (biasing means) that is connected to the lever 1806 and applies a force to the lever 1806 in the direction around the fulcrum 1802.
And two guide rolls 1812 that are rotatably provided.
It has and. The two guide rolls 1812 are
The base film 12 is arranged at intervals along the traveling direction of the base film 12 so that the outer peripheral surfaces thereof come into contact with the second surface of the base film 12. The dancer roll 180
6 is disposed so as to be located on a straight line that passes through the intermediate position between the two guide rolls 1812 and is orthogonal to the traveling direction. The dancer roll 1806 is configured such that its outer peripheral surface abuts on the first surface of the base film 12 and is driven by the dancer roll 1806, and is movable in the direction around the fulcrum 1802, that is, in the thickness direction of the base film 12. There is.

The actuator 1810 is configured to apply tension to the base film 12 by urging the dancer roll 1802 in the direction in which the dancer roll 1802 abuts on the base film 12 based on a control signal provided from the control means 36. ing. As shown in FIG. 4, the position detector 1808 detects the position of the dancer roll 1802 and outputs the position detection signal to the base film 1.
It is configured to be input to the control means 36 as the second tension detection signal. In the following, the first and second
In order to distinguish the configurations of the tension adjusting means 18A and 18B, dancer rolls 1802A and 1802B and the position detector 18
08A, 1808B, actuators 1810A, 18
Notated as 10B.

As shown in FIG. 1A, the base film 12 is guided to the back roll 20 via a guide roll 19 rotatably provided. And
The back roll 20 is provided such that its outer peripheral surface is always in contact with the first surface of the base film 12, and is rotationally driven by a back roll motor 2002 (FIG. 4) whose rotation speed is controlled by the control means 36. Is configured to. In addition, the back roll 20 has the second surface of the base film 12 and the gravure roll 2
4 is pressed against the outer peripheral surface of the base film 4 (FIG. 1A), and the second surface of the base film 12 is covered with the gravure roll 24.
Is configured to be movable between an open position (FIG. 1 (C)) separated from the outer peripheral surface of the back roll 20 and the movement of the back roll 20 is controlled by the control means 36 as shown in FIG. It is configured to be performed by the roll moving means 2004.

The nip roll 22 faces the second surface of the base film 12 and is arranged so as to face the back roll 20 with the base film 12 sandwiched between the nip roll 22 and the back surface of the base film 12. It is provided so as to be driven to rotate while being pressed against the roll 22. In addition, the nip roll 22 presses the base film 12 against the back roll 20 at a pressing position (FIG. 1A).
And a release position (FIG. 1 (B)) for releasing the pressing of the base film 12 on the back roll 20. The movement of the nip roll 22 is as shown in FIG. It is configured to be performed by the nip roll moving means 2202 controlled by the control means 36.

The outer peripheral surface of the gravure roll 24 is located at the downstream side of the nip roll 22 so as to face the second surface of the base film 12, and the back coat material is supplied to the outer peripheral surface. Is configured.
On the outer peripheral surface of the gravure roll 24, a plurality of concave grooves for holding the back coat material are formed. The gravure roll 24 is configured to be rotationally driven by a gravure roll motor 2402 (FIG. 4) whose rotation speed is controlled by the control means 36.

The kneader roll 26 is disposed so that its outer peripheral surface abuts on the outer peripheral surface of the gravure roll 24. The outer peripheral surface of the kneader roll 24 causes the back coat material to be recessed in the gravure roll 24. It is configured to be pushed into. This gravure roll 24
Is configured to be rotationally driven by a kneader roll motor 2602 (FIG. 4) whose rotational speed is controlled by the control means 36.

The second transfer roll 30 is rotationally driven while being in contact with the first surface of the base film 12 at a position on the downstream side of the gravure roll 24, thereby giving a transfer force to the base film 12. Is configured. The second transport roll 30 has a second transport roll motor 300 whose rotation speed is controlled by the control means 36.
2 (FIG. 4).

The tension detector 28 detects the tension of the base film 12 at a position between the gravure roll 24 and the second transport roll 30, and outputs the first tension detection signal via the switch 48. It is configured to input to the control means 36. The switch 48 is on / off controlled by the control means 36.

As shown in FIG. 2, the dryer 32 is provided.
Means the second transport roller 30 and the second tension adjusting means 1
8B, which is disposed between 8B and allows the back coat material applied to the second surface of the base film 12 to be dried.

The second tension adjusting means 18B is disposed on the downstream side of the dryer 32, and the position detector 1808 is provided.
B (second tension detecting means), and this position detector 1808B is configured to detect the tension of the base film 12 and input a second tension detecting signal to the control means 36. . The second processing unit 10B is provided on the downstream side of the second tension adjusting unit 18B.

Further, as shown in FIG. 4, the control means 3
6 is a low speed operation button 40 provided on a control panel (not shown),
On / off signals from the back roll close button 42, the high speed operation button 44, and the stop button 46 are input and the corresponding control operation is executed.

Next, the operation of the tape processing apparatus 10 configured as described above will be described with reference to the flowchart of FIG. The flowchart of FIG. 5 shows the operation from the application start to the application end of the application of the back coat material to the base film 12. In the initial state before the tape processing device 10 operates, the back roll 20 is located at the open position and the nip roll 22 is located at the release position, as shown in FIG. 1 (C). The switch 48 is in the off state.

When the low speed operation button 40 is turned on (step S10), the control means 36 causes the first transport roll motor 1402 and the second transport roll motor 300 to operate.
2 The gravure roll motor 2402 and the kneader roll motor 2602 are controlled to rotate at low speed (step S
12), the back roll motor 2002 is controlled to rotate at a constant speed (step S14). As a result, the base film 12 runs at a low speed from the upstream side to the downstream side. At this time, the rotation control of the first transport roll motor 1402 by the control unit 36 is performed by the first
The dancer roll 18 is set based on the tension detection signal detected by the position detector 1808A of the first tension adjusting means 18A while the actuator 1810A of the tension adjusting means 18A is set to generate a predetermined urging force.
06 is located at a predetermined position.

The second means by the control means 36
The rotation control of the transport roll motor 3002 is set so that a predetermined biasing force is generated by the actuator 1810B of the second tension adjusting means 18B, and
The dancer roll 18 is based on the second tension detection signal detected by the position detector 1808B of the tension adjusting means 18B.
06 is located at a predetermined position. Further, the back roll motor 200 is controlled by the control means 36.
The rotation control of No. 2 is performed so that the dancer roll 1806 is positioned at a predetermined position based on the second tension detection signal detected by the position detector 1808B of the second tension adjusting means 18B. The gravure roll motor 2402,
The rotation control of the kneader roll motor 2602 is controlled based on a preset rotation speed.

Next, when the back roll closing button 42 is turned on, the control means 36 controls the nip roll moving means 2202 to move the nip roll 22 as shown in FIGS. 1 (C) and (A). It moves from the release position to the pressing position (step S18), and moves (lowers) the back roll 20 from the open position to the closed position (step S2).
0).

When the back roll 20 is in the closed position ("Y" in step S22), the control means 36 turns on the switch 48 (step S24). Thereafter, the rotation control of the second transport roll motor 3002 is
This is performed based on both the second tension detection signal detected by the position detector 1808B of the second tension adjusting means 18B and the first tension detection signal of the tension detector 28. That is, since the detection result of the tension detector 28 is used for the rotation control of the second transport roll 30, the back roll 20 is controlled.
The tension of the portion from the portion sandwiched by the nip rolls 22 to the portion in contact with the second transport roll 30 is appropriately controlled.

When the high speed operation button 44 is turned on (step S26), the control means 36 controls the first transport roll motor 1402, the second transport roll motor 3002 gravure roll motor 2402 and the kneader roll motor 2602. It is controlled to rotate at high speed (step S28). Thereby, the base film 12
The back coat material is applied to the second surface of the above by the action of the gravure roll 24 and the kneader roll 26. Here, in the base film 12, static electricity is generated at a portion where it is peeled from the back roll 22 as it travels, but since this static electricity is conducted to the gravure roll 24, a large static electricity is generated. There is no.

Next, the stop button 46 is pressed to stop the application of the back coat material to the base film 12.
Is turned on (step S30), the control means 36 is turned on.
Decelerates and controls the first transport roll motor 1402, the second transport roll motor 3002, the gravure roll motor 2402, and the kneader roll motor 2602 (step S32).

When the traveling speed of the base film 12 reaches a predetermined speed (for example, 250 m / min) (step S
At 34, "Y"), the control means 36 controls the nip roll moving means 2202 to move the nip roll 22 from the pressing position to the releasing position (step S36). Thereby, the outer peripheral surface of the nip roll 22 is separated from the second surface of the base film 12, so that the force with which the base film 12 is pressed against the back roll 20 is reduced, and when the base film 12 is separated from the outer peripheral surface of the back roll 22, Generation of static electricity generated in the base film 12 is suppressed.

Next, the control means 36 controls the back roll moving means 2004 to move the back roll 20 from the closed position to the open position (step S3).
8). As a result, the second surface of the base film 12 is separated from the outer peripheral surface of the gravure roll 24, and the application of the back coat material is stopped. At this time, since the base film 12 and the gravure roll 24 are separated from each other, a conduction path of static electricity generated in the base film 12 is blocked.
Since the generation of static electricity is suppressed by the opening of, the base film 12 does not generate large static electricity.

The control means 36 controls the switch 4
8 is turned off (step S40). After this, the second
The rotation control of the transport roll motor 3002 is performed based on the second tension detection signal detected by the position detector 1808B of the second tension adjusting means 18B. That is, the rotation control of the back roll motor 2002 and the rotation control of the second transport roll 30 are performed by the second tension adjusting unit 1.
Since it is performed based on the second tension detection signal detected by the 8B position detector 1808B, the back roll 20
And the rotation speed of the second transport roll 30 match. Accordingly, the tension acting on the base film 12 from the position of the back roll 20 to the position of the second transport roll 30 is appropriately controlled. This will be described later.

Next, the control means 36 increases the biasing force of the actuator 1810A in the first tension adjusting means 18A (step S42). This occurs when the base film 12 is stopped.
Base film 12 to prevent vibration in the width direction of the
This is to increase the tension applied to. Then, under the control of the control means 36, the rotations of the first transport roll motor 1402, the second transport roll motor 3002, the gravure roll motor 2402, and the kneader roll motor 2602 are stopped, and the traveling speed becomes 0 m / min (step. S44).

Turning off the switch 48 in step S40 will be described. When the pressure applied to the back roll 20 by the nip roll 22 acting on the base film 12 is released in step S36, the base film 1 slips at a portion in contact with the back roll 20. As a result, the tension acting on the base film 12 changes. In this state, if the first tension detection signal detected by the tension detector 28 is continuously used for the rotation control of the second transport roll motor 3002 by the control means 36, the tension acting on the base film 12 is too strong. Or, a phenomenon of being too weak may occur, and an excessive force may be applied to the base film 12. Figure 6
Shows the result of actually measuring the tension F (kg) generated in the base film 1 without moving the switch 48 when the nip roll 22 is moved from the pressing position to the releasing position in step S36. As shown in FIG. 6, it can be seen that the tension F decreases as the time T elapses. In order to prevent such a change in tension, the rotational speeds of the back roll 20 and the second transport roll 30 may be made equal to each other, as described above.

As described above, according to the present embodiment, the nip roll 22 is moved from the pressing position to the releasing position prior to moving the back roll 20 from the closed position to the open position. It is possible to suppress the generation of static electricity generated in 12. Therefore, this is advantageous in improving workability.

Further, when the nip roll 22 is moved from the pressing position to the releasing position, the rotation control of the back roll motor 2002 and the rotation control of the second transport roll 30 are controlled by the second tension adjusting means 18B. Position detector 1
Based on the second tension detection signal detected by 808B, the rotation speeds of the back roll 20 and the second transport roll 30 are matched. As a result, it is possible to prevent unreasonable tension from acting on the base film 12.

In this embodiment, the nip roll 22 is moved from the pressing position to the releasing position prior to moving the back roll 20 from the closed position to the open position, but the back roll 20 is closed. From the pressing position to the releasing position at the same time as the nip roll 22 is moved from the pressing position to the releasing position.

[0034]

As described above, according to the tape manufacturing apparatus of the present invention, the nip roll is moved from the pressing position to the releasing position prior to or simultaneously with moving the back roll from the closed position to the open position. Therefore, generation of static electricity generated in the base film can be suppressed.

[Brief description of drawings]

FIG. 1A is an explanatory view showing a state in which a back roll is in a closed position and a nip roll is in a pressed position in a tape manufacturing apparatus of the present embodiment, and FIG. 1B is a back roll in a closed position and a nip roll is in a closed position. FIG. 6 is an explanatory diagram showing a state in which the back roll is in an open position and a nip roll is in a release position.

FIG. 2 is an explanatory diagram showing the configuration of the tape manufacturing apparatus according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a configuration of first and second tension adjusting means.

FIG. 4 is a block diagram showing a configuration of a tape manufacturing device according to an embodiment of the present invention.

FIG. 5 is a flowchart showing an operation of the tape manufacturing device according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram showing changes in tension of the base film.

FIG. 7A is an explanatory diagram showing a state in which a back roll is in a closed position in a conventional tape manufacturing apparatus, and FIG. 7B is an explanatory diagram showing a state in which the back roll is in an open position.

[Explanation of symbols]

10 ... tape manufacturing device, 12 ... base film, 2
0 …… Back roll, 22 …… Nip roll, 24 ……
Gravure roll, 26 ... Kneader roll, 28 ... Tension detector.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3F103 AA04 BA01 BA25                 3F105 AA04 AB17 BA02 BA25 DA04                       DA09                 4F040 AA22 AB04 AC01 BA26 CB16                       CB18 CB36 DA02 DA04 DA15                 5D112 AA08 AA22 CC09

Claims (8)

[Claims] 1. A tape manufacturing apparatus for applying a coating material onto a surface of a belt-shaped base film that travels from an upstream side to a downstream side, which is always in contact with a first surface which is one surface of the base film. And a back roll that is driven to rotate while facing the second surface that is the other surface of the base film, and is disposed to face the back roll with the base film sandwiched between the first surface of the base film. And a nip roll rotatably provided while being pressed against the back roll, facing the second surface of the base film, and arranged to face the back roll with the base film sandwiched on the downstream side of the nip roll. And a gravure roll that is driven to rotate while pressing the first surface of the base film against the back roll and that supplies the coating material to the second surface. The back roll is configured to be movable between a closed position that presses the second surface of the base film against the gravure roll and an open position that separates the second surface of the base film from the gravure roll. In the apparatus, a nip roll moving unit that moves the nip roll between a pressing position that presses the base film against the back roll and a release position that releases the pressing of the base film against the back roll is provided. The means is configured to move the nip roll from the pressing position to the releasing position in conjunction with the movement of the back roll from the closed position to the open position. 2. The moving of the nip roll from the pressing position to the releasing position of the nip roll by the nip roll moving means is performed at the same time as or before the moving of the back roll from the closed position to the open position. Item 1. The tape manufacturing apparatus according to Item 1. 3. The movement of the back roll from the closed position to the open position and the movement of the nip roll from the pressed position to the released position are performed while the base film is running. The tape manufacturing apparatus according to claim 1. 4. A transport roll that is rotationally driven while being in contact with the first surface of the base film at a location on the downstream side of the gravure roll, and a portion of the base film at a location between the gravure roll and the transport roll. First tension detection means for detecting tension and outputting a first tension detection signal, and second tension for detecting a tension of the base film at a location downstream of the transport roll and outputting a second tension detection signal. 2. The tape manufacturing apparatus according to claim 1, further comprising detection means and control means for controlling rotation speeds of the back roll and the transport roll based on the first and second tension detection signals. 5. The control means controls the rotation speed of the back roll based on the second tension detection signal when the nip roll is located at the open position, and controls the rotation speed of the transport roll. Control based on both the first tension detection signal and the second tension detection signal, and when the nip roll is located at the open position, the rotation speed of the back roll and the rotation speed of the transport roll are detected by the second tension detection signal. The tape manufacturing apparatus according to claim 4, wherein the tape manufacturing apparatus is controlled based on a signal. 6. The dancer roll, wherein the second tension detecting means is in contact with the first surface of the base film so as to be driven to rotate and movable in the thickness direction of the base film. And a position detector that detects the position of the dancer roll and outputs a position detection signal, and the second tension detection signal is the position detection signal. The tape manufacturing apparatus according to claim 1, wherein the tape manufacturing apparatus is a signal. 7. The tape manufacturing apparatus according to claim 1, wherein the coating material is a back coat material. 8. The tape manufacturing apparatus according to claim 7, wherein the base film has the second surface coated with the back coat material and then the first surface coated with the magnetic material.