JPH0154253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for winding a long adhesive tape so that the winding surface is horizontal when it is wound by a traverse winding method.

[Prior art]

Traditionally, adhesive tape used at home etc. is 20 to 50 meters long.
It is used by wrapping a paper tube around the same length onto a paper tube and cutting it to a predetermined width. In addition, carrier tape for continuously supplying electronic components etc. to the assembly position requires winding tape with a width of about 5 mm to a length of 3000 m or more, but adhesive tape used at home etc. Similarly, when winding tapes in a stacked state, the length of the tape is long, so the diameter thereof is large, and the width of the tape is narrow, resulting in deformation and making it impossible to use it practically. Therefore, when winding a long adhesive tape, a traverse winding method is adopted, similar to sewing thread. Recently, there have been requests for carrier tapes of 5,000m to 6,000m, and requests for tapes of around 10,000mm in length are expected in the near future.

When the length of the tape to be wound becomes large,
In addition to increasing the traverse width during winding, the diameter must also be increased.

By the way, when winding a long tape using the traverse winding method, if the wrap width of the tape is narrow (the overlap width is small), although the cause is not clear,
As shown in Figure 2, when the winding surface of the tape has a bulging shape at both ends, and the tape has a wide wrap width (there is a large overlap width), the tape is wound as shown in Figure 3. The central part of the surface is raised, making it difficult to wind the winding surface so that it is horizontal as shown in FIG. The above-mentioned tendency becomes stronger as the tape is wound for a longer length, resulting in problems such as not only poor winding appearance but also undesirable packaging during transportation.

In FIGS. 2 to 4, reference numeral 19 indicates a wound tape, and 20 indicates a paper tube.

Next, an example of a winding method using a conventional mechanical traverse winder will be explained based on FIGS. 5 to 7.

FIG. 5 is a schematic plan view of a conventional winding machine, FIG. 6 is a schematic side view of the same, and FIG. 7 is a schematic diagram showing the state of tape winding.

First, explanation will be given based on FIGS. 5 and 6.

When winding the tape 19 in a traverse manner around a paper tube set on the winding shaft 6, the winding motor 1 transmits the rotation of the pulley 2 to the pulley 4 via the belt 3, and the pulley 4 is rotated. At the same time as the take-up shaft 6 is rotated, the pulley 5 on the same axis is also rotated, the timing belt 7 is used to rotate the pulley 9 on the intermediate transmission shaft 8, and the transmission gear 10 (for adjusting the lap width) on the same axis is rotated. At the same time, the rotation is transmitted to the transmission gear 12 (for adjusting the lap width), which rotates the pulley 13 on the same axis of the intermediate transmission shaft 11, and causes the timing belt 14 to transmit the rotation on the scroll camshaft 16 (which determines the traverse width and lap width). By rotating the scroll camshaft 16 using the pulley 15, the tape 19 is caused to pass through the tatsuchi roll 21 by reciprocating the cam follower 17 to which the guide roll 18 is attached along the cam groove formed in the scroll camshaft 16 from side to side. The paper is wound up into a paper tube 20 in a traverse manner.

Next, a method of changing the traverse width a and the wrap width c shown in FIG. 7 will be explained.

When widening or narrowing the traverse width a shown in FIG. 7, the scroll cam 16 must be replaced, which requires time, and the necessary number of replacement scroll cams must be prepared as spares. It is necessary to keep it.

In addition, when changing the wrap width c (the overlap width with the previously wound tape), the gear 10 of the intermediate transmission shaft 8 and the transmission gear 12 of the intermediate transmission shaft 11 shown in FIG. It is necessary to make the wrap width c a predetermined width by converting the rotation speed of the scroll cam 16 and changing the number of rotations of the scroll cam 16, and it is necessary to prepare a spare gear. When the rotational speed of the scroll cam 16 is increased by changing the gear as described above, the reciprocating speed of the cam follower 17 becomes faster, and the reciprocating speed of the guide roll also becomes faster, so that the lap width becomes narrower.

In this type of conventional mechanical traverse winding method, as explained earlier, it takes a long time to change the wrap width, so it is not recommended to change the wrap width while winding a single tape. It is virtually impossible.

Next, the outline of the traverse winding system that can automatically change the traverse width and wrap width will be explained based on FIG. 8. A guide roll 12 is mounted on a paper tube 123 set on a take-up shaft and moves left and right on a ball screw 125 whose rotation direction changes as the servo motor 107 rotates forward and backward.
The tape 124 guided and supplied by the tape 6 is wound up using a traverse winding method similar to sewing thread. That is,
The guide roll 126 is attached to, for example, a 10 mm/rotation ball screw 125, and each time the servo motor 107 rotates once, the guide roll moves 10 mm to the left or right due to forward or reverse rotation of the servo motor.
Move by step. The rotational transducers 117 and 108 of the take-up motor 116 and the servo motor 107 operate basically using 1000 pulses/rotation, and the pulses generated by the rotation transducer 117 are divided by the frequency division counter 109 and the pulses of the servo motor 107 are divided. The addition/subtraction counter 104 performs calculations with the pulses of the rotating transducer 108, and the deviation is calculated by the D-A 105 and the servo amplifier 1.
Servo motor 107 by transmitting to 06
control the rotation of.

For example, the frequency division in the frequency division counter 109 is 1/
2, when the rotating transducer 117 of the winding motor 116 rotates once, the frequency is passed through the division counter 109 to the addition/subtraction counter.
500 pulses are sent, and calculations are performed in the counter with the pulses sent from the rotation transducer 108 of the servo motor 107. At the same time, a deviation signal is output from the addition/subtraction counter, and the servo is controlled based on this deviation signal. The motor 107 rotates half a rotation, 500 pulses are sent to the addition/subtraction counter, and the guide roll 126 moves 5 mm, resulting in a half lap for a tape with a tape width of 10 mm.

Since the frequency division ratio is proportional to the wrap amount and inversely proportional to the wrap width, the frequency division ratio is set in the frequency division counter through the wrap amount setting digital switch with this point in mind.

Further, the traverse width (tape winding width) is set in a subtraction counter 102, and a pulse signal from a rotating transducer of a servo motor 107 is transmitted to the subtraction counter 102, and subtraction is performed in the subtraction counter, so that the value becomes 0. When the winding ends, the number of windings at the winding end is controlled, and the circuit is switched so that the ball screw 126 rotates in the opposite direction, thereby winding the tape in the opposite direction.

In the example shown in FIG. 8, the transducer 117 of the winding motor is attached to the winding shaft, but it may be directly attached to the winding motor.

Next, this method will be explained in more detail based on FIG.

First, traverse width setting digital switch 101
At the same time, the value of the wrap amount setting digital switch 120 (or 121) is set in the frequency division counter 109 by the digital switch changeover 110. When the value of the traverse width setting switch 101 is set in the subtraction counter 102, first the forward/reverse switching circuit 11
9 is set to normal rotation.

Then, when the start button of the take-up motor 116 is turned on, the take-up motor 116 starts rotating, and following this rotation, the servo motor 107 starts rotating. When the take-up motor starts to drive, the tape take-up shaft starts to rotate and the tape begins to be wound onto the paper tube set on the take-up shaft.At the same time, a ball screw rotated by the servo motor 107 rolls the tape into a guide roll. moves left and right within the traverse width and winds the tape onto the paper tube in a traverse pattern.

When the take-up motor 116 starts rotating, the pulse from the rotary transducer 117 that is linked to the motor is frequency-divided to a value preset in the frequency division counter 109, and this frequency-divided pulse passes through the gate 111 and is outputted in the correct direction. The signal is transmitted from the reverse switching circuit 119 to the addition/subtraction counter 104, and the counter is incremented. When this addition starts, a deviation occurs in the addition/subtraction counter, and the deviation value is converted into an analog signal by the D-A105, this signal is transmitted to the servo amplifier, and the servo motor operates the addition/subtraction counter based on this signal. Start rotating in the direction of subtraction. When the servo motor starts rotating, the rotation tranducer 1 is linked to the servo motor 107.
The pulse from 08 also passes through the forward/reverse discriminator 118 and the forward/reverse switching circuit 119, and then goes to the addition/subtraction counter 104.
and decrements the counter. After the motor starts moving, the deviation value obtained as a result of calculation in this addition/subtraction counter is converted into an analog signal corresponding to the deviation value by D-A105, and the analog signal corresponding to the deviation value is sent to the servo amplifier. 106 and which rotates the ball screw 125 (see Fig. 8) to which the guide roll 126 is set, the rotation speed of the servo motor 107 is set to a predetermined value, that is, when the frequency division value of the frequency division counter is 1/2 (half lap). ), the take-up shaft is set to 2
The rotation speed of the servo motor 107 is controlled so that the guide roll moves by the width of the tape while rotating.

On the other hand, a pulse generated by a rotary transducer 108 linked to a traverse servo motor 107 is transmitted to a subtraction counter 102, and the subtraction counter 102 performs subtraction until the traverse width setting value set in advance in the subtraction counter becomes 0. traverse of the tape guide roll in one direction ends. When this value becomes 0, a signal from the zero detector 103 closes the gate 111 and stops the servo motor 107, and the zero detector circuit sets the amount of stopping at both ends (the number of times the tape is wound at the end of the traverse width). The value of the digital switch 115 is set in the subtraction counter 113, and at the same time, the gate 112 is turned on, and the rotary tranducer 11 which is linked to the winding motor 116 is turned on.
The pulse of 7 is transmitted to the subtraction counter 113, and subtraction is performed until the value set from the both-end stop amount setting digital switch 115 becomes 0. When this value becomes 0, it is detected by the zero detector 114 and the 0 signal is used. The traverse width setting digital switch 101 is activated and its value is set in the subtraction counter 102. In this case, the zero detector 103 is the subtraction counter 1
Detecting that the traverse width has been set at 02, the signal opens the gate 111, closes the gate 112, and switches the forward/reverse switching circuit 119. With this switching, the servo motor starts reverse rotation, and the bolt screw also starts rotating. It starts reversing and the guide roll starts traversing in the opposite direction.
When the servo motor starts to rotate in the opposite direction, the rotation speed and the like are controlled in the same manner as described above.

In such winding devices that can automatically change the traverse width, wrap width, etc., by changing the setting value of the traverse width setting digital switch, or changing the wrap amount switching digital switch to another wrap amount switching digital switch. By switching, the traverse width and wrap width can be easily changed, and by changing the setting value of the both-end stop amount setting digital switch, the number of tape windings at the traverse end can be easily changed. be.

Even when such an apparatus is used, conventionally, when winding a long tape, it has not been possible to improve the winding appearance by changing the wrap width midway through the winding process.

[Purpose of the invention]

When winding a long adhesive tape using a traverse method, the present invention is designed to prevent the adhesive tape from bulging at both ends of the winding surface or from bulging at the center of the winding surface. The purpose is to provide a method for winding.

[Structure of the invention]

In a method for winding a long adhesive tape using a traverse winding method, when both ends of the winding surface of the tape are raised, the wrap width is widened and the winding surface of the tape is This is a method of winding the adhesive tape so that the winding surface of the adhesive tape becomes horizontal by changing the wrap width to narrow the wrap width when the central part of the tape is raised.

The inventors have discovered that when a long adhesive tape is wound using the traverse winding method, both ends of the winding surface bulge as shown in FIG. 2, or conversely, as shown in FIG. The central part of the winding surface is raised and it is not possible to obtain a winding tape with a horizontal winding surface as shown in Figure 4. We have been conducting various studies on the winding method and found that although it varies depending on the material and thickness of the tape base material and the thickness of the adhesive applied, generally when the wrap pitch is wide, for example when it is less than a half lap, the winding method is not suitable. It has been found that when the wrap pitch is narrow, for example, half-lap or more, the winding shape becomes drum-shaped, that is, the central part of the winding surface is raised. In other words, it was found that whether the shape is drum-shaped or large-drum-shaped depends on the lap width. Therefore, we investigated the wrap width for flattening the winding surface when winding various tapes using the traverse method, but we were unable to find a wrap width or wrap pitch that would allow for flat winding. The reason for this is thought to be that various factors such as the tape material, thickness, and the tension applied to the tape during winding are interrelated.

Therefore, when winding a long adhesive tape using the traverse method, first wind the wrap width so that it is less than a half lap, and when the winding surface becomes drum-shaped, the wrap width is increased to more than half a lap. It was found that the surface was flat. Depending on the type of tape, the width is 5 mm and the thickness of the base material.
For carrier tapes with a thickness of 40μ and an adhesive layer of 25μ, for example, reduce the wrap width by 1/3 every 200m.
It was discovered that by switching from 2/3 to 2/3, the winding surface becomes the water surface.

In other words, in the case of this carrier tape, the wrap width is 1/
When winding 200m in Step 3, both ends of the winding surface will be raised, and at this stage, the wrap width will be set to 2/3 and the length will be 200m.
When rolled, the center part will be raised and the length will be 200m.
It was discovered that the winding surface can be made horizontal by reducing the wrap width to 1/3 or 2/3 each time the wrap is wound.
It is a good idea to set it to change to 3 or from 2/3 to 1/3.

Next, the method of the present invention will be explained based on FIG.

FIG. 1 shows a mechanical traverse winder, which has transmission gears 10 and 12 of the winder shown in FIG.
is the transmission 26, and the symbols 26, 27, 2
The symbols other than 8 and 29 have the same meanings as those shown in FIG. 5, 26 is a transmission, 27 and 29 are pulleys,
28 is a belt, and 30 is a pilot motor.

In the winding machine shown in FIG. 1, the pilot motor 30, the speed is changed so that the wrap width of the tape becomes larger than before, and the rotational speed of the scroll cam is adjusted to become slower. If the shape of the winding surface of the tape 19 becomes drum-shaped, the speed changer The rotational speed of the scroll cam is increased and the wrap width is adjusted to be smaller than before, so that the tape is wound so that the winding surface of the tape 19 becomes flat.

In addition, in the traverse winding method that can automatically change the traverse width and wrap width explained based on FIG. 8 and FIG.
Two wrap amount setting digital switches 120 and 121 are set in the digital switch changer 110 in advance, and when a predetermined length of tape is wound, the frequency division counter 109 is set by a signal from the wrap amount change command device 122. By automatically switching the set frequency dividing value, it is possible to automatically obtain a tape with a flat winding surface. In this case, the wrap amount switching command device 122 may issue a switching command based on the length of the wound tape, or may issue a switching command based on the winding time.

As explained above, in the method of the present invention, when winding a long adhesive tape using the traverse method, by changing the wrap width of the tape for each fixed winding length, the winding surface is flat and flat. Thus, it is possible to obtain a tape that is easy to wrap and package.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of a mechanical traverse winder for explaining the method of the present invention; FIGS. 2 and 3;
FIG. 4 is a diagram for explaining a cross section of a wound tape, and FIGS. 5 and 6 are diagrams for explaining a conventional winding machine, showing a schematic plan view and a schematic side view, respectively. FIG. 7 is a diagram showing the tape winding situation, and FIGS. 8 and 9 are schematic diagrams for explaining a winding device that can automatically change the wrap width, etc. 1... Winding motor, 6... Winding shaft, 16...
Scroll camshaft, 18...Guide roll, 19...Tape, 20...Paper tube, 21...Tatsuchi roll, 26...Transmission, 101...Traverse width setting digital switch, 102...Subtraction counter, 104... Addition/subtraction counter, 1
06... Servo amplifier, 107... Servo motor, 108, 117... Rotating tranduuser, 1
09... Frequency division counter, 110... Digital switch changer, 120, 121... Wrap amount switching digital switch, 122... Wrap amount switching command device, 123... Paper tube, 124... Tape, 125
...Ball screw, 126...Guide roll.

Claims (1)

[Claims] 1. When winding a long adhesive tape using the traverse winding method, if both ends of the winding surface of the tape are raised, the wrap width should be widened.
The wrap width is changed to narrow the wrap width when the central part of the tape winding surface is raised. How to wind up.