JP2001213556A - Guide roller device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the friction between a guide roller and a base film by synchronizing the rotating speed of the guide roller with the running speed of base film. SOLUTION: A guide roller device includes a guide roller 30 for guided run of a base film BF and a shaft 1 installed in the center of the guide roller 30, and a motor 131 is installed on the inside surface of guide roller 30 at least at its one end so that drive guide rollers 51-53 are formed, wherein the motor 131 consists of a rotor 3 and stator 2 installed opposingly, and the rotor 3 is fixed to the inside surface of the guide roller 30 while the stator 2 is fixed to the shaft 1 so that the outer rotor type motor 131 is accomplished, and the rotating speed of the guide roller 30 is controlled by a driving amplifier which receives signals from a controller 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a long film,
For example, the present invention relates to a guide roller device for guiding and running a non-magnetic base film for a magnetic recording medium (hereinafter, simply referred to as “guide roller device”).

[0002]

2. Description of the Related Art As a long film, for example, a long and wide base film such as a plastic film used for producing a magnetic recording medium or a base film for producing the magnetic recording medium is used. Various types of film-like strips that are guided and run by guide rollers, such as tape-shaped magnetic recording media with a magnetic layer formed on the film surface, photographic films, and base films before the photographic film emulsion is applied. can do.

[0003] In the following description of a conventional structure of a guide roller device for a long film (hereinafter, simply referred to as a guide roller device), a long film is generally used when manufacturing a magnetic recording medium. A guide roller device that guides the running of the base film by applying a plastic base film (hereinafter simply referred to as “base film”) as a long and wide nonmagnetic support will be described. .

In the process of manufacturing a long magnetic recording medium, for example, a magnetic paint containing a magnetic metal is applied to the surface of a base film such as a polyethylene terephthalate film, or a magnetic alloy or the like is deposited. Or forming a magnetic layer.

In order to form a magnetic layer on the surface of the base film, the base film wound into a roll is unreeled from a supply device and run at a predetermined speed along a plurality of guide rollers. It is necessary for the base film to pass through the magnetic layer forming device provided on the way of traveling with a predetermined speed and a predetermined tension. After the magnetic layer is formed by depositing or coating the magnetic material through the magnetic layer forming apparatus in this way, the base film is wound by the winding apparatus.

[0006] In the magnetic recording medium manufacturing apparatus as described above, a guide roller device is provided at a predetermined position in order to stably guide and run the base film at a constant speed. There are a plurality of types of such guide roller devices, for example, the following first to third examples.

First, as a first example, there is a guide roller device in which a guide roller is rotated by friction generated between the base film and the surface of the guide roller when the base film runs. Next, as a second example, there is a guide roller device of a type that is forcibly driven to rotate by a motor from outside the guide roller via a belt or a pulley. Finally, a third example is of a type that is classified between the first example and the second example. A third example is provided between a guide roller and a central axis on which the guide roller is arranged. There is a so-called tension drive type guide roller device which has a structure in which a bearing is mounted, forcibly rotates its central axis by a motor, and rotates the guide roller by the frictional force of the bearing.

[0008]

However, in the guide roller device of the first example described above, slippage is likely to occur between the base film and the guide roller during running of the base film. There is a problem in that the magnetic recording medium is liable to be scratched, which may deteriorate the quality of the magnetic recording medium finally manufactured.

In the guide roller device of the second example described above, it is difficult to control the speed of the base film and that of the guide roller to completely match during traveling of the base film. There is a problem that the surface of the magnetic recording medium is easily scratched, which causes deterioration of the quality of the manufactured magnetic recording medium.

Also, in the above-described guide roller device of the third example, similarly to the guide roller device of the second example, it is difficult to control the speed at which the bearing is driven and the running speed of the base film. Therefore, there is a problem that the surface of the base film is easily scratched, which leads to deterioration of the quality of the manufactured magnetic recording medium.

Further, in the guide roller device of the second example and the guide roller device of the third example described above,
There is a problem that the structure of the entire apparatus tends to be complicated, and maintenance and maintenance costs are high. In addition, when the guide roll is rotated at a high speed, noise generated by belts and pulleys increases, which is not desirable in practical use. There is.

The present inventors have conducted intensive studies and as a result, in order to solve the above-mentioned various problems, avoid deterioration of the quality of the magnetic recording medium due to friction between the guide roll and the base film. It is another object of the present invention to provide a guide roller device capable of drastically reducing the generation of noise during operation of the guide roller device and allowing the base film to run stably at high speed.

[0013]

According to the present invention, there is provided a guide roller device in which an out-rotor type electric motor is disposed inside a guide roller so as to be rotatably connected to a rotor of the electric motor on an inner peripheral surface of the guide roller. And a drive guide roller which is driven to rotate by driving an electric motor to guide and guide the long film.
Further, a drive control circuit device that drives the electric motor by controlling the frequency so that the rotational peripheral speed of the drive guide roller matches the required traveling speed of the long film is provided.

The guide roller device of the present invention is provided with a drive control circuit device for driving an electric motor whose frequency is controlled such that the rotational peripheral speed of the guide roller matches the required traveling speed of the long film. Therefore, the rotational peripheral speed of the drive guide roller and the traveling speed of the base film traveling along the guide roller can be easily synchronized, and when the base film is run under high speed and high tension conditions, Also, stable running can be ensured, and generation of surface damage due to friction between the base film and the drive guide roller during running can be avoided.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A guide roller device according to the present invention includes a guide roller for guiding and running a long film.
An out-rotor type electric motor is disposed on the inner peripheral surface of the guide roller so as to be rotatably connected to the rotor of the electric motor. The electric motor rotates to guide and guide the long film. It has a drive guide roller to be driven. Further, a drive control circuit device that drives the electric motor by controlling the frequency so that the rotational peripheral speed of the drive guide roller matches the required traveling speed of the long film is provided. The electric motor incorporated on the inner peripheral surface of the drive guide roller is constituted by a rotor (magnet) and a stator (coil) disposed opposite to each other, and the rotor (magnet) is provided on the inner peripheral surface of the guide roller. And the stator (coil) is fixed to a shaft to form an outer rotor type electric motor as a whole, and the rotation speed of the guide roller is controlled by an amplifier that receives a signal sent from the controller. It is something that has been done.

One embodiment of a guide roller device according to the present invention will be described with reference to FIGS. 1 to 4, but the guide roller device of the present invention is not limited to this example.

FIG. 1 shows a guide roller device 200 according to the present invention.
FIG. 2 shows a configuration diagram of the control circuit device 300. In the guide roller device 200 shown in FIG. 1, an example is shown in which three drive guide rollers 51 to 53 for running the base film BF are provided, but the guide roller device 200 of the present invention has the configuration shown in FIG.
Is not limited to the example shown in FIG.
It is possible to appropriately change and apply the number of installations 1 to 53 and the installation of the accompanying devices within a range that does not change the gist of the present invention.

As shown in FIG. 1, the first to third driving guide rollers 51 to 53 are sequentially arranged at predetermined positions, and these first to third driving guide rollers 51 to 51 are arranged. Around the peripheral surface of 53, for example, a base film BF for producing a magnetic recording medium is run in the direction of the arrow shown in FIG.

The control circuit device 300 shown in FIG. 2 comprises a controller (CPU) 60, an analog input device 80, and drive guide rollers 51, 52, 53.
And drive guide roller drive amplifiers 61, 62, 63 provided for them, and drive guide roller encoder signal converter 71 provided corresponding to these drive guide roller drive amplifiers 61, 62, 63. , 72, 73
It has.

The electric motor 131 of the first drive guide roller 51 is connected to the power cable connector 4 as shown in FIG.
The drive cable 41a is connected to the first drive guide roller drive amplifier 61 via the power cable 3a. Further, the pulse generator 132 of the first drive guide roller 51 is connected to the pulse generator 132 via the PG cable connector 44a.
It is connected to the first drive guide roller encoder signal converter 71 by a G cable 42a.

Similarly, the electric motor of the second driving guide roller 52 is connected to the second driving guide roller driving amplifier 62 by the power cable 41b via the power cable connector 43b. Similarly, the pulse generator of the second drive guide roller 52 is also P
The PG cable 4 is connected via the G cable connector 44b.
2b is connected to the second drive guide roller encoder signal converter 72.

Similarly, the electric motor of the third drive guide roller 53 is connected to the third drive guide roller drive amplifier 63 by a power cable 41c via a power cable connector 43c. Similarly, the pulse generator of the third drive guide roller 53 is connected to the PG cable 42c via the PG cable connector 44c.
To the third drive guide roller encoder signal converter 73.

The first to third driving guide roller driving amplifiers 61 to 63 and the first to third driving guide roller encoder signal converters 71 to 73 are respectively connected to a driver encoder signal converter connection. Cable 45a, 4
5b and 45c.

The controller 60 includes the analog input device 8
0 and the first to third drive guide roller drive amplifiers 61
To 63 are connected by one digital communication cable LC.

First to third drive guide rollers 51 to 53
Will be described with reference to FIG.

An operation command, a stop command, and a speed adjustment command are issued from the controller (CPU) 60 shown in FIG. 1. The controller (CPU) 60 is connected to a higher-level controller 160, When an abnormality is detected in each component of the roller device,
An abnormal signal is transmitted from the controller 60 to the host controller 160, and a predetermined operation command such as ON / OFF or emergency stop is issued according to the case.

Thus, the controller (CPU) 6
Information signals of predetermined command contents such as an operation command and a speed command issued from 0 are transmitted to the respective assigned addresses of the first to third drive guide roller driving amplifiers 61 to 63 through the communication cable LC. The first to third drive guide rollers 51 to 53 are driven by the outputs of the drive guide roller drive amplifiers 61 to 63.

When the operator wants to appropriately set the reference speed of the first to third drive guide rollers 51 to 53, the user inputs desired numerical information as the reference speed through the analog input device 80. In this way, the input numerical information is sent to the controller (CPU) 60 and transmitted therefrom to the respective addresses of the first to third driving guide roller driving amplifiers 61 to 63 via the communication cable LC. , Each drive guide roller drive amplifier 6
The first to third drive guide rollers 51 to 53 are driven by the outputs of 1 to 63.

As described above, after the predetermined signalized information is sent, each of them performs a desired driving operation.

On the other hand, a detection pulse signal based on the rotation speed or the rotation peripheral speed, that is, the motor rotation speed from the pulse generator 132 provided in association with each of the drive guide rollers 51 to 53 is the first to third drive guides. The signals are input to the roller encoder signal converters 71 to 73, whereby the signals are converted to correspond to the first to third drive guide roller drive amplifiers 61 to 63. The converted signals are taken into first to third driving guide roller driving amplifiers 61 to 63, and are converted into driving guide rollers 51 to 63.
The rotation speed of the motor 53 is fed back to the controller 60 as, for example, an abnormal signal.

Further, the controller 60 is provided with a graphic panel GP capable of visually monitoring, that is, monitoring the operating conditions such as the number of rotations of the motors of the respective driving guide rollers 51 to 53. When it is detected that a speed abnormality has occurred in any one of the drive guide rollers 51 to 53, the speed setting value of each of the drive guide rollers 51 to 53 is quickly exchanged with the controller 60.
A draw set value or a manual operation signal is transmitted. That is, each of the drive guide rollers 51 to 53 can be operated individually, or the number of rotations of the motor during line operation can be controlled according to each situation.
So-called multi-axis control becomes possible.

Next, the driving guide roller 51 shown in FIG.
Hereinafter, the configurations of Nos. To 53 will be described in detail with reference to the drawings. However, the drive guide rollers 51 to 53 applied to the guide roller device of the present invention are not limited to the following examples, and can be configured by appropriately combining with a conventionally known structure.

An example of the structure of the drive guide rollers 51 to 53 will be described with reference to FIGS.

Each of the drive guide rollers 51 to 53 has a guide roller 30 forming an outer cylinder.
Inside, an out-rotor type electric motor 131 (hereinafter simply referred to as an electric motor 131) is arranged. The electric motor 131 has a rotor (magnet) 3 rotatably connected to a guide roller 30 and a stator (coil) 2.
Are fixed to a shaft 1 arranged along the axis of the guide roller 30. In the rotational connection between the rotor 3 of the electric motor 131 and the guide roller 30, an end plate 150 provided at one end of the guide roller 30 and the motor frame 4 having the rotor 3 are connected by a coupling mechanism 134. This has been done. The coupling mechanism 134 includes an end face plate 150 and a motor frame 4.
Then, the connection joints 34 attached to each other can be connected by bolts or the like.

The shaft 1 is rotatably supported on the end face plate 150 and both ends of the motor frame 4 via bearings 5 on the axis of a guide roller.

On the other hand, in the guide roller 30, a pulse generator 132 has a fixed part 6a fixed to the shaft 1, a rotating part 6b fixed to the shaft 1, and a rotating part 6a fixed to the shaft 1.
A pulse is generated in accordance with the rotation of the rotor 3 of the electric motor 131, that is, the rotation speed of the guide roller 30.

The power cable 11 to the electric motor 131 and the PG signal cable 14 from which the signal of the pulse generator 132 is derived are derived from the opposite side of the end of the guide roller 30 where the end plate 150 is disposed. Have been. The power cable 11 is led out from inside the shaft 1, and the signal cable 14 is led out from inside the inner ring of the bearing 20 arranged at the end of the guide roller 30. FIG. 5 shows a schematic configuration diagram of the drive guide roller devices 51 to 53 as viewed from the wiring lead-out side.

Since the guide roller 30 forms a part of the drive guide roller by simple assembly,
The guide roller 30 (the outer cylinder) according to the intended use can be prepared in advance by manufacturing a metal, a plastic, or a surface having a rubber material added thereto, or a surface having a changed shape. ) To the coupling mechanism 134
It can be replaced by attaching and detaching. As described above, the guide roller device of the present invention has an advantage that the handling operation is easy because the guide roller that has worn out due to long-term use and can no longer be used can be easily replaced.

In addition, a cooling air tube 37 for feeding cooling air is disposed at an end of the outer cylinder 30 in order to cool the device arranged in the outer cylinder 30. The amount of the cooling air fed into the outer cylinder 30 from the cooling air tube 37 is adjusted by the cooling air tube fitting 36.

Electric motor 131 and pulse generator 1
When 32 is operated, the temperature inside the device rises,
It is necessary to send cooling air from the cooling air tube 37 to suppress a rise in temperature inside the apparatus. This cooling air passes through the inside of the guide roller (outer cylinder) 30 to cool the pulse generator 132 and the electric motor 131,
The air is exhausted from a predetermined position to the outside of the apparatus.

FIG. 6 is a graph showing the relationship between the operating time of the electric motor and the temperature of the electric motor. In FIG. 6, a curve 91 indicates a temperature change of the pulse generator 132 when the ambient temperature is set to 80 [° C.] and the cooling air is not supplied, and a curve 92 indicates the cooling air supplied when the ambient temperature is set to 80 [° C.]. 7 shows a change in temperature of the guide roller (outer cylinder) in the case where it was not performed. Since these are not cooled, the temperature rises in accordance with the ambient temperature. If the temperature exceeds 80 ° C., the life of the light source element in the pulse generator 132 is shortened. A curve 93 indicates a temperature change of the pulse generator 132 when the cooling air is supplied from the cooling air tube 37 at an ambient temperature of 80 ° C., and a curve 94 indicates the temperature at an ambient temperature of 80 ° C. The temperature change of the guide roller (outer cylinder) when the cooling air is supplied from the cooling air tube 37 is shown. Since the temperature rise of these is suppressed by the cooling air, the temperature is suppressed to about 60 [° C.] from the elapsed time of about 150 [minutes]. Thereby, the pulse generator 132
Is improved. A curve 95 indicates a temperature change of the pulse generator 132 when the cooling air is not supplied at an ambient temperature of 25 ° C.
Shows the temperature change of the guide roller (outer cylinder) when the cooling air is not supplied at an ambient temperature of 25 ° C. These are not cooled, but because of the low ambient temperature,
Since the temperature rise is suppressed to about 40 ° C., it is possible to avoid deterioration in durability due to the temperature of the pulse generator 132. From the above, it has been confirmed that if the temperature is excessively increased in the drive guide roller device, the durability of the pulse generator 132 is degraded. Therefore, it is necessary to perform cooling with cooling air as necessary. Was done.

When the guide roller device 200 of the present invention having the above-described configuration is operated, the drive guide rollers 51 to 5
Table 3 below shows the relationship between the preset rotation speed [rpm], the rotation speed [rpm] when the actual running state is monitored, and these fluctuations.

[0043]

[Table 1]

According to Table 1, there is only a fluctuation of 1 to 5 [rpm] with respect to the preset rotation speed, and the fluctuation width is suppressed to only 4.0 [%] or less, particularly 500 [rpm]. r
pm] or more, the fluctuation range is 0.1% to 0.3%.
[%] Is extremely low. That is, it can be seen that the guide roller device of the present invention can be operated at a set rotational speed with high accuracy to run the base film.

In the above description, the case where a metal outer cylinder having a smooth surface is applied as the guide roller constituting the guide roller device has been described. However, in the guide roller device of the present invention, such a case is described. The invention is not limited to the examples, and various changes in shape and material are possible. For example, as shown in FIGS.
7A, a metal roller having a flat surface, a metal crown-shaped roller shown in FIG. 7B, a metal inverted crown-shaped roller shown in FIG. 7C, a roller made of metal shown in FIG. 7E, a roller having an uneven groove formed on the surface thereof, a roller having a surface treated with Teflon (tetrafluoroethylene) in FIG. 7F,
A roller in which the surface of FIG. 7G is alternately formed with a rubber portion and a metal portion, a roller in which the surface of FIG. 7H is covered with rubber, a rubber roller in which an uneven groove is formed in the surface of FIG. And various rollers can be applied.

As described above, in the guide roller device of the present invention, since the running speed of the base film and the peripheral speed of the guide roller can be synchronized, physical damage due to friction of the base film with the guide roller is achieved. Can be avoided.

Further, even when the base film is supplied and wound at a high speed, according to the guide roller device of the present invention, the electric motor 131 built in the guide roller (outer cylinder) is connected to its shaft. The outer rotor type electric motor is configured so as to rotate the connected guide roller (outer cylinder) 30 by fixing the shaft, so that the resonance of the shaft can be avoided, the generation of noise due to vibration can be prevented, and the guide roller can be prevented. The device can be operated quietly.

Further, according to the guide roller device of the present invention, since the guide roller is directly driven by the motor, the guide roller device is significantly different from the base film supply and take-up device to which the guide roller device having the conventional structure is applied. Can be reduced in size, and the reliability can be improved.

According to the guide roller device of the present invention, the rotation speed of the guide roller and the running speed of the base film can be synchronized, so that when the base film is run under high speed and high tension conditions. However, the quality of the finally obtained product could be improved without damaging the surface.

[0050]

According to the guide roller device of the present invention, the rotation speed of the guide roller can be synchronized with the running speed of the base film, so that the base film can be run under high speed and high tension conditions. Even in this case, the quality of the finally obtained product could be improved without damaging the surface.

Further, according to the supply and take-up device for a film strip using the guide roller device of the present invention, the rotation speed of the guide roller constituting the guide roller device and the running speed of the base film are synchronized. This makes it possible to avoid scratching the surface of the base film even when the base film is run under conditions of high speed and high tension, so that various long base films such as magnetic recording media can be used. The quality of the product was improved.

[0052]

[Brief description of the drawings]

FIG. 1 shows a schematic configuration diagram of a guide roller device of the present invention.

FIG. 2 shows a schematic diagram of a control flow of the guide roller device of the present invention.

FIG. 3 is a schematic configuration diagram of an outer rotor motor having an internal structure of a driving guide roller constituting the guide roller device of the present invention.

FIG. 4 is a schematic configuration diagram of a driving guide roller constituting the guide roller device of the present invention.

FIG. 5 is a schematic cross-sectional view of a configuration near a wiring connection portion of the drive guide roller device of the present invention.

FIG. 6 is a diagram showing the relationship between the elapsed time and the temperatures of the electric motor and the pulse generator when the drive guide roller device of the present invention is operated while changing the operating conditions.

FIGS. 7A to 7 are diagrams showing shapes and materials of guide rollers constituting the drive guide roller device of the present invention.

[Explanation of symbols]

1 axis, 2 coils (stator), 3 magnets (rotor), 4 motor frames, 5 bearings, 6
Encoder, 7 PG frame, 8 set screws, 11 power cable, 12 power cable take-out port, 13 power cable connector, 14 PG signal cable, 15 PG signal cable port, 16 PG
Signal cable connector, 41a, 41b, 41c Power cable, 42a, 42b, 42c PG cable,
43a, 43b, 43c Power cable connector, 4
4a, 44b, 44c PG cable connector, 45
a, 45b, 45c Driver encoder signal converter connection cable, 51 First drive guide roller, 52
Second drive guide roller, 53 Third drive guide roller, 60 controller, 61 First drive guide roller drive amplifier, 62 Second drive guide roller drive amplifier, 63 Third drive guide roller drive amplifier ,
71 encoder signal converter for first drive guide roller, 72 encoder signal converter for second drive guide roller, 73 encoder signal converter for third drive guide roller, 80 analog input device, 131 electric motor, 132 pulses Generator, 133 volts, 13
4 Coupling mechanism, 150 end face plate, 200 guide roller device, 300 control circuit device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yu Saito 6-35 Kita Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 3F033 GA08 GB08 GC02 GE04 3F105 AA06 AB17 BA07 BA37 CA14 CB02 CC01 DC03 5D112 KK05

Claims (10)

[Claims] 1. An out-rotor type electric motor is disposed inside a guide roller so as to be rotatably coupled to a rotor of the electric motor on an inner peripheral surface of the guide roller. A drive guide roller that is driven to rotate so as to guide and drive the film, wherein the electric motor is controlled by frequency control so that the rotational peripheral speed of the drive guide roller matches the required running speed of the long film. A drive control circuit device for driving the guide roller device. 2. A pulse generator for detecting a rotational peripheral speed of the drive guide roller, wherein the drive control circuit device includes a drive guide roller drive amplifier and an encoder for converting a signal obtained from the pulse generator. And a signal converter. The signal converted by the encoder signal converter is input to the drive guide roller drive amplifier, and the output of the drive guide roller drive amplifier drives the outer rotor type electric motor. The guide roller device according to claim 1, wherein control is performed. 3. The guide roller device according to claim 1, wherein the guide roller constituting the drive guide roller is detachable from the outer rotor type electric motor. 4. The guide roller device according to claim 1, wherein a peripheral surface shape of the guide roller is any one of a smooth shape, a crown shape, an inverted crown shape, and a fine uneven shape. 5. The guide roller device according to claim 1, wherein a peripheral surface of the guide roller is made of metal, tetrafluoroethylene, rubber, or a combination thereof. 6. The guide roller device according to claim 1, wherein the drive guide roller is provided with a cooling device for cooling the outer rotor type electric motor and the pulse generator. 7. The guide roller device according to claim 1, wherein a power supply wiring of the outer rotor type electric motor is inserted into a shaft arranged on a shaft center of the drive guide roller. . 8. The drive guide roller according to claim 1, wherein the guide roller has a cylindrical shape, and has a structure in which the guide roller and the rotor of the outer rotor type electric motor are coupled via a coupling mechanism. The guide roller device according to claim 1. 9. A method according to claim 8, wherein a plurality of the driving guide rollers are provided, and a rotation speed, a running speed of the base film, and a parameter are set by digital communication for simultaneously operating the plurality of driving guide rollers. The guide roller device according to claim 1. 10. A rotation speed of the guide roller and a running speed of the base film for simultaneously operating the plurality of drive guide rollers, the plurality of drive guide rollers being provided, individually set for each guide roller. The guide roller device according to claim 1, further comprising a function of causing the guide roller to rotate.