JP4133849B2 - Tape winding method and tape winding device - Google Patents

Description

  The present invention relates to a tape winding method and a tape winding device for winding a tape-shaped recording medium such as a magnetic tape around a winding core in a roll shape.

  Conventionally, a magnetic tape is generally manufactured by producing a wide magnetic tape raw material, cutting it into a plurality of strip-like magnetic tapes, and winding it around a winding core without a flange by a winding unit. ing. The magnetic tape wound around the take-up core is handled as a product as it is, or is further wound around a plurality of tape reels and accommodated in a cartridge case.

  In winding, it is desirable that the magnetic tape is wound as long as possible on the winding core, that is, as large as possible. In order to realize efficient winding, it is desirable that the winding speed of the magnetic tape is high. Such an increase in the diameter and speed of winding of the magnetic tape is also related to the accuracy of adjusting the winding shape when being wound around the winding core.

  That is, when the accuracy of adjusting the winding shape when wound on the winding core is lowered, the winding of the magnetic tape is likely to be disturbed if the winding speed is increased or the winding is performed with a large diameter. For this reason, there arise problems that the roll of the magnetic tape wound around the take-up core is deformed and dropped, or the edge damage of the magnetic tape during storage or transportation is a concern.

In order to solve such problems and improve the winding appearance, for example, a technique is known in which a touch roller is pressed from the outside toward the winding core side with respect to a tape roll which is a wound magnetic tape. (For example, refer to Patent Document 1).
In the winding device disclosed in Patent Document 1, the touch roller is rotatably supported near the tip of the touch arm, and the touch arm is rotatably supported. And it is comprised so that a torque may be applied to a touch arm so that a touch roller may be pressed by a tape roll.
Further, the winding device rotates and supports the two touch rollers with a single plate-like member, and rotates and supports the plate-like member on the touch arm. The pressure roller is described so that it can follow the fluctuation of the radius of the tape roll.
JP-A-62-31645 (page 3, upper right column, line 7 to lower left column, line 7, FIG. 1)

In the conventional winding device, when the winding amount of the tape roll increases, the touch arm rotates correspondingly and the touch roller follows. For this reason, the rotation position of the touch arm is different at the start and end of winding of the magnetic tape, and the posture (angle) with respect to the tape roll is different.
Since the touch roller is provided on such a touch arm that changes its posture, if the posture of the touch arm changes in accordance with the winding amount of the tape roll, the pressing posture on the tape roll also changes. As a result, there is a risk that the tape may fall off due to winding disturbance.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tape winding method and a tape winding device in which the tape-like recording medium is less likely to be disturbed and the tape roll is less likely to fall off.

A tape winding method according to claim 1 of the present invention that has solved the above problems is a tape winding method for winding a tape-shaped recording medium in a roll shape around a winding core, the tape-shaped recording medium being while winding on the winding core, the outer periphery of the tape is formed by winding a roll, the first touch roller supported by a support arm which is multiplied with the torque by the biasing means, to press into the winding core side , said support arm draped of torque, while maintaining the same posture, so as to press the tape roll by the first touch roller, supporting the supporting arm in accordance with the winding amount of the tape-shaped recording medium The support part to be moved is moved.

According to the first aspect of the invention, the outer periphery of the tape roll formed by winding the tape-shaped recording medium around the winding core is pressed toward the winding core by the first touch roller. The support unit that supports the first touch roller is tape-recorded so as to press the tape-shaped recording medium with the touch roller while maintaining the same posture (while maintaining the same posture relative to the outermost part of the tape roll). Since it moves according to the winding amount of the medium, the posture does not change from the start to the end of winding of the tape-shaped recording medium, and as a result, the relative positional relationship between the tape-shaped recording medium and the touch roller Is retained. Therefore, the winding accuracy of the tape roll wound around the winding core is improved, winding disturbance is less likely to occur, and winding with an adjusted winding shape is realized.
This makes it difficult for the tape-shaped recording medium to drop off during winding, and can improve production efficiency. Further, edge damage of the tape-shaped recording medium during storage or transportation can be prevented.

  According to a second aspect of the present invention, in the tape winding method according to the first aspect, the tape-shaped recording medium is caused to enter the outer peripheral portion of the tape roll by the pressing of the first touch roller, and the first touch. An entry restricting roller immediately before the first touch roller for guiding the tape-like recording medium entering the roller is moved in the same positional relationship as the first touch roller.

  According to the second aspect of the present invention, the entry restricting roller can be moved in the same positional relationship as the first touch roller following the movement of the support portion. The winding angle of the recording medium can be kept unchanged from the start of winding to the end of winding. Therefore, the winding accuracy of the tape-like recording medium is further improved, winding disturbance is hardly generated, and winding with an adjusted winding shape is realized.

  According to a third aspect of the present invention, in the tape winding method according to the first or second aspect, the second touch roller disposed on the downstream side of the tape-shaped recording medium with respect to the first touch roller, The tape is pressed against the outer periphery of the tape roll while being supported independently of the first touch roller.

  According to the third aspect of the present invention, the tape roll in a state in which the second touch roller disposed on the downstream side of the tape-shaped recording medium is supported independently of the first touch roller with respect to the first touch roller. Therefore, the movement of one touch roller does not affect the movement of the other touch roller, unlike the case where it is supported by one conventional support member. Therefore, the followability of the first and second touch rollers with respect to the vibration of the tape roll can be improved.

  According to a fourth aspect of the present invention, in the tape winding method according to any one of the first to third aspects, the pressing force of the second touch roller is set larger than the pressing force of the first touch roller. It is characterized by doing.

  According to the invention described in claim 4, since the pressing force of the second touch roller is set larger than the pressing force of the first touch roller, for example, the first and second touch rollers have different functions. Can do. For example, by setting the pressing force of the first touch roller to be weak, it is possible to function as a roller for regulating the edge of the tape-shaped recording medium, and by setting the pressing force of the second touch roller to be strong. Further, it can function as a roller for bleeding air between tape-shaped recording media. In addition, a pair of touch rollers may be arranged at substantially opposite positions in the vertical direction with the tape roll interposed therebetween, and this arrangement further improves the winding accuracy of the tape roll.

  According to a fifth aspect of the present invention, in the tape winding method according to any one of the first to fourth aspects, the support portion is based on an output of a sensor that detects an outer peripheral position of the tape roll. It is characterized by movement control.

  According to the invention described in claim 5, the outer peripheral position of the tape roll is specified by the sensor, and the support portion is controlled to move based on the detection of the sensor. As a result, the support portion is moved following the winding amount (winding amount) of the tape-shaped recording medium, and the posture of the support portion is held in a substantially constant state. Therefore, the posture of the support portion does not change from the beginning to the end of winding of the tape-shaped recording medium, and as a result, the relative positional relationship between the tape-shaped recording medium and the touch roller is better maintained. . Therefore, the winding accuracy of the tape-shaped recording medium wound around the winding core is further improved, winding disturbance is hardly generated, and winding with an adjusted winding shape is realized.

The invention according to claim 6 is a tape winding device for winding a tape-shaped recording medium around a winding core in a roll shape, and the tape is formed by winding the tape-shaped recording medium around the winding core. a touch roller you press the outer circumference of the roll, the support arm is provided for rotatably supporting the touch roller, the winding state of the tape roll so that the support arm with respect to the tape roll to retain the same attitude a supporting portion that is movable in response to, provided in the support portion, and the biasing the support arm Ru apply torque means to be urged the touch roller to the winding core side, wherein comprising: a sensor for detecting a peripheral position of the tape roll, on the basis of an output of said sensor, and a control unit for controlling the movement the support portion so as to hold the posture of the support arm draped of torque And it has a structure.

According to the sixth aspect of the present invention, the tape-like recording medium is wound on the take-up core while being wound by being pressed by the touch roller. The support portion that supports the touch roller is urged by the urging means to urge the touch roller toward the take-up core side, and has the same posture based on the output of the sensor that detects the outer peripheral position of the tape roll. Since the movement is controlled while pressing the touch roller against the tape-like recording medium while holding the tape, the tape is properly moved according to the winding amount. As a result, the winding accuracy of the tape-shaped recording medium wound around the winding core is improved, winding disturbance is less likely to occur, and winding with an adjusted winding shape is realized.

  According to the present invention, the tape-shaped recording medium is less likely to be disturbed and the tape-shaped recording medium is less likely to fall off during winding. As a result, production efficiency can be improved, and edge damage of the tape-shaped recording medium during storage or transportation can be prevented.

  Hereinafter, with reference to drawings, the tape winding method and tape winding device concerning an embodiment of the present invention are explained in detail. In the drawings to be referred to, FIG. 1 is a block diagram conceptually showing a tape winding device according to an embodiment of the present invention, and FIG. 2 is a view showing the winding state. In the present embodiment, a magnetic tape take-up device 1 used for taking up a magnetic tape MT for data as a tape-like recording medium will be described.

  As shown in FIG. 1, the magnetic tape take-up device 1 includes a take-up core 10, a first support on which two touch rollers 21 (first touch roller) and a touch roller 22 (second touch roller) are supported. Part 20 and a second support part 30 on which the touch roller 31 is supported, and these are provided on the panel P of the magnetic tape device J. The magnetic tape MT is cut into a tape shape by a slitter (not shown) and supplied to the magnetic tape take-up device 1 of this embodiment (see FIG. 2). The magnetic tape MT supplied to the magnetic tape take-up device 1 is driven to rotate in the direction of the arrow in the figure by the touch rollers 21, 22, 31 of the first and second support portions 20, 30 after passing through a plurality of rollers. The winding core 10 is wound into a roll shape.

  The first support portion 20 is provided integrally with the support plate 23, the rotation support shafts 24 and 25 provided on the support plate 23, and the rotation support shafts 24 and 25, respectively. The touch arms 21a and 22a serving as support arms for the rollers 21 and 22 and the rotation of the touch arms 21a and 22a around the rotation support shafts 24 and 25 are controlled, and the touch rollers 21 and 22 are controlled. And air cylinders 26 and 27 as urging means for applying a desired pressing force.

  The support plate 23 is formed in a thin plate shape, and a flat type linear actuator L1 is provided on the back thereof. The linear actuator L1 includes a rail R1, a ball screw (not shown) provided on the rail R1, and a slider S1 that is driven up and down along the rail R1 in the direction of the arrow by a stepping motor (not shown) that drives the ball screw. have. The rail R1 is fixed to the panel P of the magnetic tape device J by bolts (not shown) and the support plate 23 is fixed to the slider S1 by bolts (not shown). The support plate 23 supports tape guides 23a and 23b for transporting the magnetic tape MT.

  The linear actuator L1 is driven and controlled by the control of the control unit 40 described later, and the support plate 23 is moved up and down with respect to the panel P during the drive control. When the support plate 23 is moved up and down during such drive control, the touch arms 21a and 22a provided on the support plate 23 are also moved up and down integrally (linear movement) without changing the posture. Yes. That is, when winding the magnetic tape MT, which will be described later, by driving and controlling the support plate 23, the touch rollers 21, 22 are moved according to the winding amount of the tape roll MT1 (see FIG. 2). . As a result, the relative positional relationship between the tape roll MT1 and the touch rollers 21 and 22 does not change, and the touch rollers 21 and 22 are pressed against the tape roll MT1 while maintaining substantially the same posture during the winding operation. It becomes like this.

  As described above, the touch arms 21a and 22a are integrally provided on the rotation support shafts 24 and 25, and are supported by the rotation support shafts 24 and 25, respectively. Thereby, the touch rollers 21 and 22 provided at the tip portions of the touch arms 21a and 22a can move in a direction toward or away from the winding core 10. The tip portions of the touch arms 21a and 22a can be finely moved around the support shafts 21b and 22b, and a gel-like cushioning material B for absorbing vibration is provided in the vicinity of the support shafts 21b and 22b. .

  As shown in FIG. 2, the touch arm 21 a is provided with a regulating roller 28 (an entry regulating roller) that regulates the entry angle (winding angle) of the magnetic tape MT that has been conveyed. As the regulation roller 28, a crown roller is used. As a result, when the magnetic tape MT being conveyed passes through the regulating roller 28, this displacement is automatically corrected even when a displacement in the tape width direction occurs.

  Wires 21c and 22c for applying torque to the touch arms 21a and 22a are respectively attached to the touch arms 21a and 22a in the vicinity of the rotation support shafts 24 and 25, with their tip portions fixed by bolts or the like. Yes. The wires 21c and 22c are hung from the touch arms 21a and 22a on the outer peripheral walls 24a and 25a of the rotation support shafts 24 and 25, and then hung down against the piston rods 26a and 27a of the air cylinders 26 and 27. It is connected. The connecting portions are provided with adjusting portions 26b and 27b for finely adjusting the elongation and the like of the wires 21c and 22c.

  Air from the compressor or the like (not shown) is supplied to the air cylinders 26 and 27 through the connection hoses 26c and 27c. When the air is supplied, the piston (not shown) is moved down to connect the wires 21c and 22c. Pulled in the downward direction. Thus, torque is applied to the touch arms 21a and 22a.

Next, the touch rollers 21 and 22 provided on the touch arms 21a and 22a of the first support portion 20 will be described.
The touch roller 21 is a roller with a flange capable of regulating an edge (not shown) of the magnetic tape MT. As shown in FIG. 2, the touch roller 21 is in contact with the magnetic tape MT conveyed toward the tape roll MT1. The position of the magnetic tape MT in the tape width direction is regulated. A taper surface may be provided on the contact surface of the flange of the touch roller 21 with the magnetic tape MT so that position regulation in the tape width direction is easily performed. In addition, the touch roller 21 regulates the direction in which the magnetic tape MT being conveyed enters the tape roll MT1.

  Since the purpose of the touch roller 21 is to regulate the position in the tape width direction of the magnetic tape MT as described above, the pressing force is applied from above the tape roll MT1 when the tape roll MT1 rotates. Is set to a size that will not leave. The setting of the pressing force can be set by the pressure of the air supplied to the air cylinder 26, and can be appropriately changed by changing the pressure of the air.

  The touch roller 22 is a roller for strongly pressing the outermost MT11 (outermost peripheral position) of the tape roll MT1, and while the magnetic tape MT just wound around the tape roll MT1 is at the outermost peripheral position, The air drawn between the tape MT and the tape roll MT1 is pushed out by the pressing force.

In such a touch roller 22, at least a contact portion with the magnetic tape MT is formed of an elastic member such as rubber. Further, since the touch roller 22 requires a certain amount of pressing force, the pressure of the air supplied to the air cylinder 27 is set stronger than that of the touch roller 21. The pressing force can be appropriately set in the range of 150 to 350 g / cm ^{2 in} consideration of, for example, the width and thickness of the magnetic tape MT. Various materials such as natural rubber, synthetic rubber, and elastomer are used as the elastic member, and urethane rubber, neoprene rubber, and the like are particularly preferable from the viewpoint of wear resistance and the like.

  In the present embodiment, since the setting of the pressing force of the touch roller 21 and the touch roller 22 is performed by two independent air cylinders 26 and 27, the performance of the individual touch rollers 21 and 22 is sufficient. It is possible to reliably and easily set the pressing force that can be pulled out.

  Next, the 2nd support part 30 is demonstrated. As shown in FIG. 1, the second support portion 30 includes a support plate 32, a support portion 33 provided on the support plate 32 and supporting the touch roller 31, and a holding portion erected on the support plate 32. 35 and a sensor 34 held by the holding portion 35.

  The support plate 32 is formed in a thin plate shape, and a flat type linear actuator L2 similar to the first support portion 20 is provided on the back portion thereof. The linear actuator L2 includes a rail R2, a ball screw (not shown) provided on the rail R2, and a slider S2 that is driven up and down in the direction of the arrow along the rail R2 by a stepping motor (not shown) that drives the ball screw. have. The rail R2 is fixed to the panel P of the magnetic tape device J by bolts (not shown) and the support plate 32 is fixed to the slider S2 by bolts (not shown).

  The linear actuator L2 is driven and controlled by the control of the control unit 40 described later, and the support plate 32 is moved up and down with respect to the panel P during the drive control. When the support plate 32 is moved up and down during such drive control, the support portion 33 provided on the support plate 32 is also moved up and down integrally without changing the posture. That is, when the magnetic tape MT described later is wound, by controlling the movement of the support plate 32, the touch roller 31 is controlled to move according to the winding amount of the tape roll MT1.

  The support portion 33 is provided so as to be rotatable about a support shaft 33a, whereby the touch roller 31 can be brought into and out of contact with the tape roll MT1. The support portion 33 is connected to an air cylinder 36 via a rod 33b, and air from a compressor (not shown) or the like is supplied to the air cylinder 36 via a connection hose 36a. Thus, when air is supplied to the air cylinder 36, torque is applied to the support portion 33 when the magnetic tape MT described later is wound. Thereby, the touch roller 31 is urged in a direction approaching the tape roll MT1. The rod 33b is provided with an adjusting portion 33c that can finely adjust the urging force.

  As shown in FIG. 3, the sensor 34 is held by the holding portion 35 and is arranged on the side of the tape roll MT1, and in this embodiment, the outermost MT 11 (at the start of winding) of the tape roll MT1. Uses a reflection type optical sensor capable of detecting the outermost part of the winding core 10. In addition, a reflection plate 37 such as a mirror for reflecting the light emitted from the sensor 34 is provided on the support plate 32 which is a surface facing the sensor 34. As shown in FIG. 3, such a sensor 34 detects the outermost MT 11 of the tape roll MT 1 (see FIG. 2) based on the amount of light received through the reflection plate 37. The result detected by the sensor 34 is sent to the control unit 40 (see FIG. 1) described later.

  As shown in FIG. 1, in the magnetic tape device J of the present embodiment, the first and second support portions 20 and 30 are based on the detection result from the sensor 34 provided on the second support portion 30. And a control unit 40 including a computer or the like for performing the control.

Based on the detection result from the sensor 34 as described above, the control unit 40 determines the amount of received light in a predetermined range (for example, a normal line passing through the center of the light receiving unit 34a of the sensor 34 as shown in FIG. 3). It is determined whether or not O is a value having a certain width on the basis of the value of the amount of light received when it overlaps the outermost MT11 of the tape roll MT1. Then, when the control unit 40 determines that the value of the amount of received light is less than the predetermined range, the control unit 40 determines that the outermost MT 11 of the tape roll MT 1 is at a position where the sensor 34 is thicker than the position where the sensor 34 is located. In this case, the first and second support portions 20 and 30 are moved in the direction of thickening the tape roll MT1 (the direction in which the first and second support portions 20 and 30 are separated from each other). A signal for control is sent to the linear actuators L1 and L2.
In addition, when the control unit 40 determines that the value of the amount of light received by the sensor 34 exceeds a predetermined range, the control unit 40 moves the first and second support units 20 and 30 in the anti-winding direction (first and second). Signals for movement control in the direction in which the support portions 20 and 30 approach each other are sent to the linear actuators L1 and L2. When the control unit 40 determines that the value of the amount of light received by the sensor 34 is within a predetermined range, the control unit 40 determines the next value of the amount of received light without sending a signal for performing the movement control as described above. 34.

By such control of the control unit 40, the first and second support units 20 and 30 are automatically moved and controlled based on the winding amount (winding weight) of the tape roll MT1. Therefore, as shown in FIG. 4, when the tape roll MT1 is gradually wound as indicated by the symbols (A), (B), and (C) in the drawing, the outermost MT 11 is moved to the sensor 34. The first and second support portions 20 and 30 are controlled to move to positions corresponding to the outermost MTs 11 by the control of the control unit 40 (the first support in the figure). Only the tip portions of the touch arms 21a and 22a are shown in FIG.
In the present embodiment, the movement control by the control unit 40 is configured to be performed for a predetermined step in the linear actuators L1 and L2, for example. It is also possible to move many steps at a time.
By such control of the control unit 40, the first and second support units 20 and 30 are maintained in their respective postures, and the pressing force of the touch rollers 21, 22, and 31 is maintained. Thus, the tape roll MT1 is moved and pressed so as to correspond to the position of the outermost MT11.

  In FIG. 1, a magnetic tape MT cut into a strip from a data magnetic tape raw material (not shown) and conveyed is a plurality of tape guides G1, G2 provided on the panel P as shown in FIG. Is supplied to the tape guide 23 b of the first support portion 20.

Next, winding of the magnetic tape by the magnetic tape winding apparatus in the present embodiment will be described with reference to FIGS. 1 to 5 as appropriate with reference to the flowchart of FIG.
First, the winding core 10 is mounted on the magnetic tape winding device 1 in step ST1. At this time, the first support portion 20 and the second support portion 30 are held at positions away from the take-up core 10 so that the take-up core 10 can be easily attached. In this state, since air is not supplied to the air cylinders 26 and 27 of the first support portion 20, the touch arms 21 a and 22 a are rotated in a direction away from the winding core 10. Thereafter, in step ST2, the magnetic tape MT is hung from the tape guides G1 and G2 on the tape guides 23a and 23b of the first support portion 20, and further hung on the regulation roller 28 and mounted at a predetermined position of the winding core 10. To do. Thereafter, an operation switch (not shown) is operated in step ST3 to move the first and second support parts 20 and 30 in a direction approaching the winding core 10, and the touch rollers 21, 22 and 31 are moved to the winding core 10. Is brought into contact with the magnetic tape MT wound around the tape. Thereafter, in step ST4, an operation switch (not shown) is operated to start winding.

  When winding is started in step ST4, the magnetic tape MT starts to be wound around the winding core 10, and the outermost MT11 of the tape roll MT1 is detected by the sensor 34 in step ST5 (see FIG. 4). . The sensor 34 detects the amount of light received from the reflecting plate 37 through the outermost MT 11 of the tape roll MT 1, and sends the detected value to the control unit 40. The control unit 40 inputs the detection value of the received light amount from the sensor 34, and determines whether or not the detection value of the received light amount is within a predetermined value range set in advance in the control unit 40 in step ST6. To do.

  At this time, if the control unit 40 determines that the detected value of the received light amount is not within the range of the predetermined value (No), the control unit 40 proceeds to step ST6 ′, and the detected value of the received light amount is within the range of the predetermined value. It is determined whether or not it is smaller. When it is determined in step ST6 ′ that the detected value of the received light amount is smaller than the predetermined value range (Yes: when the winding amount increases), the process proceeds to step ST7, where the first and second support parts 20, Signals for performing movement control are sent to the linear actuators L1 and L2 of the first and second support portions 20 and 30, respectively, in order to move the step 30 by a predetermined amount in a direction away from each other (winding direction). As a result, the linear actuators L1 and L2 are driven, and the first and second support portions 20 and 30 are moved by a predetermined amount in the winding direction of the tape roll MT1. As a result, the touch rollers 21, 22, and 31 are moved by a predetermined amount by the amount of the tape roll MT1 wound up.

  If it is determined in step ST6 ′ that the detected value of the amount of received light is not smaller (larger) than the predetermined value range (No: the state where the sensor 34 has gone too far in the winding direction), the process proceeds to step ST7 ′. In order to move the first and second support parts 20 and 30 stepwise by a predetermined amount in a direction approaching each other (the anti-winding and thickening direction), a signal for performing movement control is sent to the first and second support parts 20 and 30. It is sent to 30 linear actuators L1, L2. Accordingly, the linear actuators L1 and L2 are driven, and the first and second support portions 20 and 30 are moved by a predetermined amount in the anti-winding and thickening direction of the tape roll MT1. Thereby, position correction of the 1st, 2nd support parts 20 and 30 is performed. Thereafter, the process returns to step ST5 and the subsequent operations are repeated.

  When it is determined in step ST6 that the detected value of the received light amount is within the predetermined value range (Yes), the process proceeds to step ST8, where it is determined whether or not the magnetic tape MT has reached the predetermined winding amount. In this determination, the transport amount of the magnetic tape MT being transported may be detected by a detection device (not shown), or may be specified from the travel amounts of the linear actuators L1 and L2. If it is determined in step ST8 that the winding amount is not the predetermined amount (No), the process returns to step ST5 and the above operation is repeated. That is, as shown in FIGS. 3 and 4, the outermost MT11 of the tape roll MT1 is sequentially detected by the sensor 34, and the first and second support portions 20 and 30 are located according to the winding thickness of the tape roll MT1. The operation of moving the touch rollers 21, 22, 31 by a predetermined amount after the fixed amount of movement is repeated.

  Thereafter, when it is determined at step ST8 that the winding amount is a predetermined amount (Yes), winding of the magnetic tape MT is ended at step ST9. As shown in FIG. 5, the winding thickness of the tape roll MT1 just before the end of winding is considerably large. Thereafter, in step ST10, as shown in FIG. 7, the first and second support parts 20 and 30 are controlled to move in a direction away from the tape roll MT1 (a direction away from the tape roll MT1) to prepare for removal of the tape roll MT1. . Thereafter, the tape roll MT1 is removed in step ST11, and the winding of the magnetic tape MT around the winding core 10 is completed.

FIG. 8 is a schematic view showing a winding shape of the tape roll MT1 wound up in this manner at the outermost part MT11. FIG. 8A is a pancake resulting from a thickness variation in the width direction of the magnetic tape at the outermost part. It is the figure which emphasized and showed the inclination of a diameter (henceforth only inclination), (b) is the figure which emphasized and showed the state in which the edge rise phenomenon has arisen in the outermost part.
As shown in FIGS. 8 (a) and 8 (b), in the outermost MT 11 of the tape roll MT1, there are at least inclinations and edge rises as shown in these drawings. In such a case, what becomes a problem is whether or not an inclination or edge rising phenomenon has an influence on the winding accuracy of the magnetic tape MT. That is, even if an inclination or edge swell phenomenon occurs, if the winding accuracy of the magnetic tape MT is improved, even if the inclination amount or the like is indicated as a large value, the magnetic tape MT falls off or the like. This means that this phenomenon will not occur. In order to confirm this point, the present inventors conducted a test.

The test was carried out by winding a 12.7 mm wide magnetic tape MT cut into a thin strip from the original magnetic tape for data using the magnetic tape take-up device 1 shown in FIG. In the manufacturing stage, the occurrence of winding defects was examined. In collecting the test data, the tension and the like were adjusted appropriately so that the amount of inclination and the amount of edge rise were positively controlled. In addition, the magnetic tape raw material used the thing which has a thickness of 9 micrometers.
In addition, as a method of measuring the amount of inclination and the amount of rising edge, a measuring device was directly applied to the outermost MT 11 of the wound tape roll MT1. The test data is as shown in Table 1.

In the table, ◯ indicates that no winding failure has occurred, and x indicates the occurrence of winding failure.
In Table 1, the magnetic tape MT did not fall off at any value of 20 μm to 120 μm for the tilt amount and the edge rise amount.

  As a comparative example, test data when using a conventional magnetic tape winding device in which the touch roller is configured to rotate about one fulcrum was obtained.

  When the test data of Table 1 and Table 2 are compared, the tape roll MT1 using the magnetic tape take-up device 1 of the present embodiment did not cause winding failure as described above, but the conventional magnetic In the tape take-up device, the tilt amount and the edge bulge amount were both 60 μm or more, and the magnetic tape MT fell off. This difference is due to the fact that the pressing roller 21, 22, 31 pressed by the tape roll MT 1 is moved according to the winding thickness of the tape roll MT 1, so that the pressing force is always kept constant. Conceivable.

According to the magnetic tape take-up device 1 of the present embodiment described above, the touch arms 21a and 22a and the support portion 33 are moved while maintaining a predetermined posture, so that the magnetic tape MT and the touch rollers 21, 22, and 31 are moved. As a result, the winding accuracy of the magnetic tape MT wound around the tape roll MT1 is improved. As a result, the winding is less likely to be disturbed, and the winding with the adjusted winding shape is realized.
Therefore, it is difficult for the tape roll MT1 to drop off during winding, and the production efficiency can be improved. Further, it is possible to prevent edge damage of the tape roll MT1 during storage or transportation.

  The sensor 34 detects the outermost MT11 of the magnetic tape MT wound around the tape roll MT1, and the touch rollers 21, 22, 31 are controlled to move based on the detection of the sensor 34. The touch rollers 21, 22, 31 can be moved in accordance with the winding amount of the tape roll MT1, and the pressing force of the touch rollers 21, 22, 31 on the magnetic tape MT is substantially constant according to the winding amount. Will be held. Therefore, the winding accuracy of the tape roll MT1 wound around the winding core 10 is improved.

  Furthermore, since the touch roller 22 and the touch roller 31 are disposed at substantially opposite positions in the vertical direction across the tape roll MT1, the winding accuracy of the tape roll MT1 is further improved. Moreover, since the touch rollers 22 and 31 are controlled to move based on the detection of the sensor 34, the pressing force of the touch rollers 22 and 31 is substantially constant according to the winding amount of the magnetic tape MT. As a result, there is an advantage that the winding accuracy of the tape roll MT1 is further improved.

FIG. 9 is a configuration diagram conceptually showing a modification of the magnetic tape winding device.
As shown in the figure, in this modification, the third support portion 50 held by the first support portion 20 is provided, and the touch roller 22 is provided thereon. The third support portion 50 includes a support plate 51 that is supported via the arms 50a and 50b. The support plate 51 is supported on a rail R3 fixed to the panel P via a slider S3 provided on the back thereof so as to be movable up and down.
The support plate 51 is provided with an LM guide including a guide 51a and a guide body 51b. A support portion 52 is supported on a plate 51c erected on the guide 51a via a support shaft 53. A touch roller 22 is attached to 52. A pressing cylinder 55 is connected to the plate 51 c via a rod 54. The pressing cylinder 55 is supplied with compressed air from a compressor or the like (not shown) through a supply hose 55a. The touch roller 22 receives the pressing force of the pressing cylinder 55 and applies the pressure to the tape roll MT1. A pressing force is generated.

In such a magnetic tape winding device 1 as well, since the posture of the support portion 52 that supports the touch roller 22 does not change during winding, the relative positional relationship between the tape roll MT1 and the touch roller 22 is Retained. Therefore, the winding accuracy of the magnetic tape MT wound around the winding core 10 is improved, winding disturbance is less likely to occur, and winding with an adjusted winding shape is realized.
Moreover, since the touch roller 22 presses the magnetic tape MT in a direction toward the winding direction of the magnetic tape MT, it is possible to suitably push out the air caught between the magnetic tapes MT. Therefore, it is possible to obtain the tape roll MT1 that is less likely to cause winding disturbance.

  As mentioned above, although embodiment which concerns on this invention was described, it cannot be overemphasized that this invention is not limited to these, The appropriate change implementation according to the main point of invention is possible. For example, the number and arrangement of touch rollers can be arbitrary. Moreover, you may provide a sensor in the 1st support part side. Various sensors can be used as long as they can detect the outermost MT11 of the tape roll MT1.

It is a lineblock diagram showing notionally a tape winding device concerning one embodiment of the present invention. It is the figure which showed the winding-up state similarly. It is the schematic diagram which showed the positional relationship of the outermost part of a tape roll, and a sensor. It is the schematic diagram which showed the movement of the 1st, 2nd support part corresponding to winding thickening of a tape roll. It is a block diagram which shows notionally the magnetic tape winding apparatus just before completion | finish of winding. It is a figure which shows the flowchart at the time of magnetic tape winding. It is a block diagram which shows notionally the magnetic tape winding apparatus after completion | finish of winding. (A) is a schematic diagram emphasizing the inclination of the pancake diameter resulting from the thickness variation in the width direction of the magnetic tape, and (b) is emphasizing the state in which the edge rise phenomenon occurs at the outermost part. It is a schematic diagram. It is a block diagram which shows notionally the modification of a magnetic tape winding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnetic tape winding device 10 Winding core 20 Support part 21,22 Touch roller 21a Touch arm 21b Support shaft 23 Support plate 24 Rotation support shaft 24a Outer peripheral wall 26, 27 Air cylinder 28 Restriction roller 30 Support part 31 Touch roller 32 Support plate 33 Support section 34 Sensor 36 Air cylinder 40 Control section 50 Support section 51 Support plate 51a Guide 52 Support section J Magnetic tape device L1, L2 Linear actuator MT Magnetic tape MT1 Tape roll MT11 Outermost P panel

Claims (6)

A tape winding method for winding a tape-shaped recording medium in a roll shape around a winding core,
While winding the tape-shaped recording medium to the winding core, the outer periphery of the tape is formed by winding a roll, the first touch roller supported by a support arm which is multiplied with the torque by the biasing means, the winding Press to the take-core side,
The support arm is provided in accordance with the winding amount of the tape-shaped recording medium so that the torque-applied support arm maintains the same posture and presses the tape roll by the first touch roller. A tape winding method, wherein the support portion is moved. By pressing the first touch roller, the tape-shaped recording medium enters the outer periphery of the tape roll,
An entry restricting roller immediately before the first touch roller for guiding the tape-like recording medium entering the first touch roller is moved in the same positional relationship as the first touch roller. The tape winding method according to claim 1.   The second touch roller disposed on the downstream side of the tape-shaped recording medium with respect to the first touch roller is pressed against the outer periphery of the tape roll in a state of being supported independently of the first touch roller. The tape winding method according to claim 1 or 2.   The tape winding method according to any one of claims 1 to 3, wherein the pressing force of the second touch roller is set larger than the pressing force of the first touch roller.   The tape winding method according to any one of claims 1 to 4, wherein the support part is controlled to move based on an output of a sensor that detects an outer peripheral position of the tape roll. A tape winding device for winding a tape-shaped recording medium into a winding core in a roll shape,
A touch roller that presses against the outer periphery of a tape roll formed by winding a tape-shaped recording medium around the winding core;
A support arm that rotatably supports the touch roller is provided, and a support portion that is movable according to the winding state of the tape roll so that the support arm maintains the same posture with respect to the tape roll. When,
Provided in the supporting portion, wherein the biasing means to the support arm Ru apply torque to be urged the touch roller to the winding core side,
A sensor for detecting an outer peripheral position of the tape roll;
A tape winding device comprising: a control unit that controls movement of the support unit so as to maintain a posture of the support arm to which a torque is applied based on an output of the sensor.

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