JPH0367846A - Device for winding tape and method for controlling winding speed - Google Patents

Abstract

PURPOSE:To suppress generation of frictional heat to a minimum by providing a control means which controls a rotational speed of a rotating means so that slip of a winding member with respect to the rotation of the rotating means is nearly constant. CONSTITUTION:Rotational speed of a winding member is estimated on the basis of carrying speed of a tape, a length and thickness of a tape wound on a winding members while the winding member is rotated by sliding friction engagement. Then, winding speed is controlled by using a control means 300 controlling so as to generate a higher rotational speed than the estimated rotational speed within a specified range at a rotation source 106.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for rotating a winding member using sliding friction.
The present invention relates to a tape winding device for winding a tape around its outer periphery, and a method for controlling the winding speed thereof. Here, the tape is, for example, an ink ribbon tape or the like.

[Prior Art] The present applicant has developed an apparatus for manufacturing ink ribbon tapes used in typewriters, etc., and has developed an apparatus for applying leader tape (Apparatus A (Japanese Patent Application No. 1-31167)) and a ``ribbon winding apparatus''. (Patent Application No. 63-268182), “Automatic Winding Method and Apparatus for R Tape” (Patent Application No. 63-276288)
The application was filed as

The ribbon tape winding device disclosed in these prior applications uses a raw material (hereinafter referred to as "roll") in which a thin sheet-like ink ribbon is wound in multiple layers (total length, about 5000 m).
Prepare a sheet of tape (abbreviated simply as "original tape"), and apply this sheet tape (
A large number of narrow tapes (several tens of centimeters in width) are pulled out by a pinch roller rotating at a predetermined speed and passed through a slitter with multiple cutting blades arranged in the width direction to obtain a large number of narrow tapes at once. It is something.

Each of the plurality of narrowly cut tapes is wound around a plurality of winding members called winding cores.

FIG. 12 shows the winding core arrangement and rotational drive configuration in this prior application.

This winding mechanism includes a drive motor 106 and a clutch mechanism 1.
It consists of a rotating shaft 101 connected via a shaft 05, a plurality of cores 102 penetrated by this shaft, and the like.

That is, in FIG. 12, the shaft 101 is held against the base 110 by holding members 109 and 111.

Each core 102 has a cylindrical shape with a cavity inside, and the shaft 101 passes through the cavity.

The surface where the shaft 101 and this cavity are in contact is free to rotate in the circumferential direction and slide in the axial direction of the shaft. Each core has a cavity inside and is sandwiched between washers 103. The core 102 at the right end of the shaft 101 is the collar 1
06 and washer 103.

The shaft 101 has a keyway 101a in the longitudinal direction, and each of the plurality of washers 103 and collars 106 has a pin 104, which is engaged with the groove 101a. Therefore, the washer 103 and the collar 106 rotate in synchronization with the rotation of the shaft 101, and also freely slide in the axial direction of the shaft 101.

The holding member 109 holds the shaft 1 by an external force F.
Move in the axial direction of 01. This force F is generated by a predetermined air cylinder (not shown), and the air pressure is switched in stages. The upper and lower bottom surfaces of the core 102 are in frictional engagement with the brim portion of the washer 103, so when the external force F is applied, the frictional force from the washer 103 increases and the core 102 rotates while sliding to some extent.

[Problems to be Solved by the Invention] As in this prior application, the rotational torque from the motor is not directly transmitted to the core 102 as a tape winding member, but is transmitted indirectly through frictional engagement. The reason for this is that, since the tape itself is thin, damage to the tape due to sudden changes in tension accompanying direct bonding is to be prevented in the first place. Moreover, especially in the case of an ink ribbon, this sudden change in tension causes ink to show through, causing the ink ribbon to lose its value. This is the second reason. Also,
Not only between the core and the washer shaft 101, but also between the core 10
The reason why even the two elements are frictionally engaged is as follows. Although the original fabric is wound into a roll, the winding stiffness is not uniform in the width direction. Further, the thickness is also non-uniform in the width direction. Therefore, when multiple tapes are cut from a single sheet of tape and wound around multiple cores as in the above-mentioned prior application, the winding diameters differ among the cores, causing variations in the winding conditions. Therefore, variations in tension occur between tapes. Therefore, in order to absorb this variation in tension,
The individual cores 102 are frictionally engaged with each other via washers 103.

That is, in the devices of these prior applications, the core 102 is in frictional engagement with the collar 106 and with each other for their own reasons.

As long as there is frictional engagement, heat is generated from it. The less heat the better. In particular, since the base of ink ribbons and the like is a thin film, this heat adversely affects the mechanical properties of the film, and also affects the chemical properties of the ink, further promoting ink bleed. .

The present invention proposes a tape winding device and a winding speed control method that minimizes the frictional heat generated when rotating a tape winding member through frictional engagement.

[Means for solving the problem and its effect] The inventor is
First, we focused on the "slip" in the winding member (in the example shown in FIG. 12, the slip between the core 102 and the washers). As mentioned above, this "slip" is essential to protect the tape. Therefore, it is sufficient to keep the amount of slippage to the necessary minimum. If the rotation of the winding member is controlled, it will affect the tension on the tape, which is undesirable. Therefore, in the present invention, an external drive source (as shown in FIG. This controls the rotation speed of the motor (corresponding to motor M).

Therefore, the configuration of the present invention is such that a tape winding device that winds a tape sent at a predetermined speed around the outer periphery of a rotating predetermined winding member rotates the tape in a controllable manner. a rotating means as a source, a transmitting means for transmitting the rotation of the rotating means to the winding member by sliding friction engagement, and a sliding amount of the winding member with respect to the rotation of the rotating means to be substantially constant. and control means for controlling the rotational speed of the rotation means.

In a preferred aspect of the present invention, the control means calculates the rotational speed of the winding member based on the tape conveyance speed, the winding amount wound on the winding section, and the thickness of the tape, It is characterized in that the rotation speed of the rotation means is set as the rotation speed obtained by adding the predetermined amount of slip to this rotation speed.

The invention related to a method for achieving the above object is a method for controlling the winding speed of a rotating predetermined winding member when winding the tape fed at a predetermined speed around the outer periphery of the rotating predetermined winding member. , while transmitting the rotation from the rotation source to the winding member by sliding frictional engagement, the winding is performed based on the conveyance speed of the tape, the amount of winding wound on the winding member, and the thickness of the tape. The winding speed of the winding member is controlled by estimating the rotational speed of the member and controlling the rotation source to generate rotation at a higher rotational speed within a predetermined range than this rotational speed. It is characterized by

[Example] Referring to the attached drawings, the present invention will be described in which a league tape is attached while feeding an original ink ribbon, and further, it is cut in the feeding direction, and the cut ink ribbon as a tape is cut into a plurality of cores. An embodiment applied to a league attaching/cutting/winding device will be described in detail. That is, this device is an improvement of the tape winding device of the applicant's earlier application in accordance with the object of the present invention.

The league attachment/cutting/winding device of the embodiment has the tape feeding/league tape application portion shown in FIG.
It consists of a cutting/winding part shown in FIG. In addition, the details of the tape feeding/leader tape pasting in Fig. 2 are as follows: "Leader tape pasting is performed using equipment Jl (Japanese Patent Application No. 1-311
67), the cutting/winding part in Figure 3 is a "ribbon winding device" (Japanese patent application No. 63-268182) and "automatic tape winding method and device" (Japanese patent application No. 63-276228).
are explained respectively. Therefore, we will leave a detailed explanation of the glue attachment/cutting/winding device as the present example to those involved, but in order to understand the outline of the operation of this device, a tape is fed out from a raw material and a league is attached. , the process from cutting to wrapping around the core will be explained, focusing on the tape bus.

<Schematic explanation of tape path> In this leader attachment/cutting/winding device, the tape from the raw sheet is sent out from the device shown in Fig. 3, where the leader tape is adhered, and then the tape is sent out from the device shown in Fig. 3. The fed tape is sent to a cutting/winding unit shown in FIG.

FIG. 2A is a diagram schematically showing the process until the sheet 10 unwound from the original fabric 60 is wound up at the winding section. Also,
FIG. 2B is a diagram showing how the rotational speed of the main roller 39 rotated by the spindle motor changes over time from the start of the work to the end.

In FIG. 2A, the wide sheet 10 from the wafer reduction 60 passes through a roller section 11.12 (11° 12 in FIG. 3).
It reaches the slitter 33. Here, the tape is cut into a narrow tape and further pulled by the main roller 39. The plurality of narrow tapes cut in this way are divided into two groups (10a
, 1ob) and sent. That is, all adjacent tapes are separated and one is sent to the winding core 22 and the other to the winding core 70 for winding.

The reason for the separation in two directions is to ensure spatial space for the plurality of cores 22 and 70 in two locations. It should be noted that the leader tape is attached between the roller groups 11 and 12, which becomes clear from FIG.

The feeding speed of the sheet IO is defined by the rotational speed of the main roller 39. As shown in FIG. 2B, the main roller 39
The rotational speed of is changing in a trapezoidal manner, gradually increasing the speed during the first period (about 20 seconds), then pulling the sheet at a constant speed, and gradually decelerating after a certain constant speed period.

The tension in the sheet, that is, the tape 10, is generated between the original fabric 60 and the roller 39 by the roller 39 pulling the sheet 10 and by the brake described below suppressing the pulling out of the original fabric 60. Further, the friction occurs between the roller 39 and the core because the core is rotated by friction drive by a motor to be described later.

In addition, in order to operate this device from the initial state, the operator must:
The sheet is pulled out from the original fabric 60 and fed to the position of the main roller 39. at this point
Only the device shown in Figure 3 is in operation, and the leader tape is transferred to sheet 1.
0, and then move the sheet 10 until this leader tape portion reaches the core position. When the leader tape part cut into multiple tapes sticks to the core, turn on the start switch of the device.
After that, the device itself automatically transports the sheet, cuts it, attaches the leader tape, winds it around the core, etc.

FIG. 2C is a diagram showing the positional relationship of a plurality of power sources used in this device and the signals exchanged between these power sources and the controller 300.

That is, the servo motor 22 that rotates the main roller 39
0 rotates according to the signal NM from the controller 300. Note that the rotation of the servo motor 220 is reduced to one-fourth and transmitted to the main roller 39. The rotation of the servo motor is monitored by the encoder 221, and the monitor signal is sent to a predetermined controller 300 as a signal flood.

Since there is no slip on the roller 329 with respect to the sheet 10, by counting the number of pulse signals, the distance traveled relative to the core, in other words, the distance β wound around the core can be determined.

A motor 10 is a source of frictional rotational force transmitted to the core.
A signal Nw is sent to 6. Powder brake 2 for applying a brake to the original fabric 60 and applying tension to the sheet 10
A signal BR is sent to 22. A signal SC is sent to a stepping motor 223 that moves the position of the original fabric 60 from side to side so that the sheet being conveyed does not twist.

<Sheet feeding/league attachment> According to FIG. 3, sheet feeding and leader tape attachment will be briefly explained.

A mechanism for attaching the leader tape is provided between a roller group 11 and a roller group 12 arranged opposite to this roller group 11. The sheet lO from the original fabric roller 60 is guided by the roller group 11, passes through the leader tape pasting device, and is then transferred to the ribbon tape winding system of FIG. 4 via the roller group 12. These two roller groups are
The tension applied to the tape 10 is adjusted.

The clamp units 14a and 14b clamp the sheets IO at predetermined intervals in the feeding direction. The purpose of this predetermined interval is to cut this gap and apply the leader tape to the gap. The leader tape indicates the start/end position of the tape winding operation, and for this purpose, a marker that reflects light is attached to this tape.

The presence of this marker is detected by sensor 28, which will be described in connection with FIG.

The operation of attaching the leader tape is as follows. The suction boxes 15a and 15b suction the sheet 10 in a clamped state. Cutting unit 16a.

16b holds the sheet 10 in this suction state between each inner suction box and the outer suction box.
Cut along the width direction. The unnecessary sheets 10a cut and separated between these cutting positions are discarded from the discard opening 17b. The drawer unit 21 draws out the leader tape 20 along the width direction of the sheet 10 between the cutting positions.

The leader tape pressing members 18a and 18b attach adhesive portions 20a and 20b provided on the lower surfaces of both ends of the leader tape 20 along the pull-out direction to the cut ends of the sheet 10. The cutting unit 22 cuts the leader tape 20 after being pasted along the feeding direction of the sheet 10.

The above is an outline of how to attach the leader tape.

<Cutting/Winding> The general operation of cutting the sheet 10 into a plurality of tapes and winding these tapes around the cores 22 and 23 will be described with reference to FIG.

In the figure, the sheet 10 is cut by a slitter 33 at equal intervals in the feeding direction of the sheet 10. Each of the cut tapes 10 is pulled by the main roller 39, where it is separated into two directions, up and down. The tape group 10a separated upwardly is wound up by a core group 23 consisting of a plurality of cores.

The vacuum 35 sucks up unnecessary tape (often not wide enough) corresponding to both ends of the sheet 10. Further, the sensor 28 is a sensor that detects a marker on the leader tape.

As shown in FIG. 4, two core groups 23 and 22 are prepared. In the figure, when the winding on the core group 23 is completed, the turret mechanism 20 rotates to move the core group 22 to the winding position. At this point, the core 23 that has been wound has moved to the position of the core 22. Further, the tape extending from this core 23 is connected to the roller 24.
．． It extends from the core 22 (original position of the core 23) to the roller 27. At this time, the cutter 3 together with the vacuum mechanism 30
1 comes down, and the clamp spring 32 and vacuum 30
While the tape is held by the cutter 31
is cut by.

At the lowered position of the cutter 31, a tape leader tape portion wound around the core 23 is located. Further, since the cutter 31 has a pressing portion, the adhesive portion of the leader tape is pressed against the core 22 when cutting the tape. In this way, when the tape is wound around the core 23, the preparation for winding a new tape around the core 22 is completed.

Incidentally, the same turret mechanism, core group, cutter, etc. as in FIG. 4 act on the tape group 10b, and the tape is wound onto the core in the same manner.

The core groups 22 and 23 are arranged in the same manner as in the above-mentioned earlier application ("Ribbon winding device"; Japanese Patent Application No. 63-268182).

<Control of Winding Speed> How to control the winding speed of the core will be explained with reference to FIG.

FIG. 5A shows changes in the rotational speed NM of the main shaft motor for rotating the main roller 39. As described above, the conveyance speed V of the sheet/tape is defined by the rotation speed of the main roller 39.

As shown in FIG. 6, the radius of the main roller 39 is R (circumferential length is 600 mm), its rotational speed is NM, and the reduction ratio of the motor rotational speed is, for example, 1:4. Then, the conveyance speed V is 11 v = 2 x RX N M XX - 60 = 2.5 N, (
1). As an example, if the transport speed is constant (120
m/min), and when R=O and 1 m, the rotation speed of the main roller is approximately 191 rpm.

Next, the rotation speed NC of the core is determined. The thickness of the tape is T, and the core diameter at the beginning of winding is r. The core diameter at the end of binding and winding is rl,
Assuming that the total length of the winding is 4, by simple calculation, 2 T r+ = (+r.'P''...
(2) π is obtained. Therefore, ... (3) is obtained. Here, the unit of Nc is rps.

In order to generate a constant tension between the core and the main roller 39, the core must be driven by a motor that rotates at a rotation speed exceeding this rotation speed Nc. The appropriate number of rotations Nw for the core slip (α constant) is expressed as N, = NC + α (4).

In FIG. 5A, the amount of winding C on the core is determined by the acceleration period (t≦t1), where t represents the time elapsed from the start of winding.
) at a certain point in time (the conveyance speed at this time is V), β=%vt (5) During the constant velocity period (1+≦t≦t2), the constant velocity is V. Expressed as: n=V, va tl +Vo・(t-tl)...
・(6) becomes. Also, during the deceleration period (tz≦t≦t3), 12 = 'AV o t + 10V o・(t2-
tl ) 10% VO(t t2 ).

9 Therefore, according to equation (3), the rotation speed N depending on the time change
The change in c is illustrated as a curve 200 in FIG. 5B. That is, the curved portion is the reciprocal of a parabolic function of time t.

If the rotation speed Nw of the winding motor is linearly approximated,
When set as shown in 201 in Figure B, a slip of the amount shown by the shaded area in the figure occurs between the core and the washer that transmits frictional force to the core, and all of this becomes frictional heat. Therefore, it is an object of the present invention to minimize the area of this shaded area.

When the rotation speed Nw of the winding remoter M is set to satisfy equations (3) to (7), as shown in FIG. 5C,
Since the motor rotation speed Nw follows the curve 203, the amount of slip at each time point is always constant α. If this amount of slip is set to a value greater than enough to absorb the rotation speed deviation that occurs in multiple winding cores, an appropriate tension is always maintained between the core and the main roller 39, and at the same time, the amount of slip that occurs in the core can be maintained. Frictional heat is kept to a minimum.

0 Next, the rotation speed Nw of the winding remoter M is calculated using equations (3) to (7).
A control system for controlling the equation to satisfy the equation will be explained.

This control system is as described in FIG. 2C. The functional configuration of the controller 3'00 shown in FIG. 2C, which controls the rotation of the winding remoter 106, is shown in FIG.

The winding amount β on the core (approximately equal to the conveyance amount) is determined by the block 252 counting pulse signals from the encoder 221. System-wide timekeeping occurs at block 251. In the motor control for controlling the rotation speed of the main roller 39, a block 253 calculates the rotation speed N from the elapsed time t, and applies this to the servo motor 22.
This is done by outputting 0. Winding remoter 10
6, the block 254 controls the winding length 4 and NM.
This is done by obtaining Nw, calculating it, and outputting it to the winding remoter 106.

The detailed control will be explained below according to the flowchart.

FIG. 7 is a flowchart of control in block 253. In step S2, the timer of the timer block 251 is reset. In step S4, it is checked whether the time tl has elapsed, that is, whether the acceleration period shown in FIG. 5A has ended. Note that this tl is held in a constant block 250. During this acceleration period, in steps 86 to S8, the rotation speed NM of the servo motor 220 is set as follows. Here, N means that the main roller 39 is at a constant speed ■.

It is the rotation speed when reaching , and from equation (1), vo=2.5N.

It is. That is, during the acceleration period, the number of rotations of the main roller 39 is N. increases linearly over time.

Here, the winding length calculation routine will be explained with reference to FIG. That is, in step S50, the winding length °C is set to °゛O°゛. Thereafter, each time pulse 4 from the encoder 221 arrives, the winding length is accumulated in step S54.

g=g+δ ・・・・・・(9) Furthermore,
The addition amount δ in step S54 is the circumferential distance of the main roller 39 that moves each time the encoder 221 advances by one step.

When the time tl has elapsed, the process advances to step S12, and the rotational speed N is set to N. Fixed to. This rotational speed No. is maintained during constant speed conveyance. The end of the constant speed conveyance period is at step S.
It is determined that the cumulative winding length °C of 54 is ≧42. When the end of the constant velocity conveyance period is recognized, in step S18, the end time of the constant velocity conveyance period is stored in the upper register 2.

Steps 820 to S24 are rotational speed control during the deceleration period. The end of this deceleration period is performed in step S22 by determining whether 3 t-tl ≧t x t 2 , that is, the elapsed time after the start of deceleration has reached t s t 2 or more. The rotation speed of the servo motor during the deceleration period is controlled in step S24, and in step S54, the winding length 4 accumulated up to the present time is read. In step S42, the current rotational speed NM is read. In step S44, the current rotational speed Nw of the winding remoter 106 is calculated using equation (4).

・・・・・・(10) It will be held in

The above is the rotation speed control of the servo motor from accelerated conveyance to constant velocity conveyance to decelerated conveyance. The winding amount and the servo motor rotation speed in these three sections are stored in the register C (at step S54) and the register N (at steps S8, S12, and S24), respectively.

Incidentally, when the servo motor stops and the main roller 39 stops, one data tape is pasted as explained in FIG. 3.

FIG. 8 is a flowchart showing the procedure for controlling the rotational speed of the winding remoter 106. Step S4 In this way, the core is carved into the washer (FIG. 12) and maintained in a state where constant slippage occurs over the entire section.

<Control of Slip Amount> The slip amount is controlled by controlling the current flowing through the electromagnetic clutch 105. Note that as the winding diameter around the core increases, it is desirable to increase the current flowing through the electromagnetic clutch 105 as shown in FIG. 11. This increases the clutch current to compensate for the decrease in tape tension as the winding diameter increases.

Note that the force F (12th
2), it is preferable to set the window as appropriate so that the core does not reverse rotation during turret rotation or winding, and the rotational force of the winding remoter 105 is appropriately transmitted. Also, when cutting the tape,
Set F slightly stronger than when winding. This is because precise frictional force control is performed by the clutch 106.

Incidentally, FIG. 10 is a diagram showing experimental results using the apparatus of the embodiment.

<Modifications> The present invention can be modified in various ways without departing from the spirit thereof. For example, the apparatus of the present invention can not only apply a leader tape to an ink-coated ribbon tape, but also apply a leader tape to other ribbon-like materials, such as thermal or similar printing tape or magnetic tape that does not use ink. It can also be applied to the pasting process.

In the above embodiment, the rotation speed of the core was calculated from the known rotation speed of the main roller 39 and the thickness T of the tape.

Then, the amount obtained by adding the slip amount α to the rotation speed Nc of the core was defined as the rotation speed of the winding remoter. However, in the present invention, it is important to keep the amount of slip in the core constant to the minimum necessary level, and therefore, the present invention is not limited to the method of measuring the rotation speed Nc of the core. For example, a tachometer is attached directly to each core, and the average value of the rotation speed is determined as the core rotation speed N. You can close it.

[Effects of the Invention] As explained above, according to the present invention, the slippage occurring in the winding member is kept to the necessary minimum, and therefore the generated frictional heat is also kept to the necessary minimum. As a result, the negative effect of this frictional heat on the tape or the conditions of frictional engagement can be minimized, and as a result, a consequential effect can be obtained, for example, the tape is wound more uniformly.

[Brief explanation of drawings]

Fig. 1 is a functional block diagram of a controller in an embodiment in which the present invention is applied to an ink ribbon winding device; Fig. 2A is a diagram schematically showing the tape path in the embodiment device; 7 Fig. 2B is a main roller 2C is a diagram showing the configuration of the control device of each rotating part in the embodiment device, FIG. 3 is a perspective view of the leader tape attachment section of the embodiment device, and FIG. 4 5A to 5C are diagrams explaining the principle of core rotation speed control in this embodiment. FIG. 6 is a diagram illustrating tape conveyance by the main roller. A diagram explaining the calculation principle of the speed V and the winding amount 4, FIG. 7 is a flowchart of a control procedure for controlling the speed of the servo motor 220 in the embodiment, and FIG. 8 is a diagram illustrating the winding remoter 1 in the embodiment.
06 is a flowchart of the control procedure for speed control, FIG. 9 is a flowchart of the control procedure for calculating the winding amount in the embodiment, FIG. 10 is a diagram showing the experimental results using the embodiment device, 8 FIG. 11 12 is a diagram showing the characteristics of the current control of the clutch 105. FIG. 12 is a diagram showing the mechanical configuration of the winding mechanism that is also applied to the conventional example and this embodiment. In the figure, 10... Sheet, 11.12... Tension adjustment roller group, 14a, 14b... Clamp unit, 15...
Suction box, 16... Cutting unit, 18... Leader tape suppressing member, 19... Leader tape adhesive part receiver is member, 20... Leader tape, 21... Drawer unit, 22.23...・Core group, 24, 25, 27° 34.36-38...Roller, 28...Sensor, 3
0.35...Vacuum, 31...Cutter, 33.
...Slitter, 39...Main roller, 102...
Core, lO3... washer, 104... pin, 10
5... Clutch, 106... Winding remoter, 220
... Servo motor, 221 ... Encoder, 222
. . . Powder brake, 223 . . . Stepping motor. Figure 2B Figure 1

Claims (3)

[Claims] (1) In a tape winding device that winds a tape fed at a predetermined speed around the outer periphery of a rotating predetermined winding member, the tape winding device rotates in a controllable manner and serves as a rotation source. , a transmission means for transmitting the rotation of the rotation means to the winding member by sliding friction engagement; and a transmission means for transmitting the rotation of the rotation means to the winding member so that the amount of sliding of the winding member with respect to the rotation of the rotation means is substantially constant. 1. A tape winding device comprising a control means for controlling speed. (2) The control means calculates the rotational speed of the winding member based on the conveying speed of the tape, the amount of winding taken up on the winding member, and the thickness of the tape, and adjusts the rotational speed to the rotational speed of the winding member. 2. The tape winding device according to claim 1, wherein the rotational speed of the rotating means is set to a rotational speed to which a certain amount of slip is added. (3) In a method for controlling the winding speed of a rotating predetermined winding member when a tape fed at a predetermined speed is wound around the outer periphery of the rotating predetermined winding member, by sliding frictional engagement,
While transmitting rotation from a rotation source to the winding member, estimating the rotational speed of the winding member based on the transport speed of the tape, the amount of winding wound on the winding member, and the thickness of the tape. , a winding speed control characterized in that the winding speed of the winding member is controlled by controlling the rotation source to generate rotation at a rotation speed higher than this rotation speed within a predetermined range; Method.