JPS60218249A - Adhesive tape winding method - Google Patents

Abstract

PURPOSE:To always keep the winding surface horizontal by changing the lap width of an adhesive tape every time a fixed length of the tape is taken up in a system of winding a long adhesive tape by a traverse winding method. CONSTITUTION:While a paper tube 123 on a take-up shaft is rotated by a winding motor 116, a servomotor 107 is rotated forward and backward to change the turning direction of a ball screw 125, whereby a guide roll 126 is moved to wind a tape 124 round the paper tube 123. In this arrangement, the winding motor 116 and the servomotor 107 are provided with rotation transducers 117, 108. Pulses from the transducer 117 are divided by half, for example, by a frequency division counter 109. The deviation between the divided pulses and pulses from the transducer 108 is found by a forward and backward counter 104 to control the servomotor 107. Thus, the lap width of the tape 124 is set in the half-lap state to achieve the expected object.

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 tapes used at home etc. are 20 to 50 fIL.
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, the carrier tape used to continuously supply electronic components etc. to the assembly position needs to be rolled up to a length of 3000 m or more with a width of about 5 m, but adhesive tape used at home etc. Similarly, when winding the tape in a stacked state, the length of the tape is long, so the diameter becomes large, and the inside of the tape is narrow, so that the tape loses its shape and becomes unusable in practice. Therefore, when winding a long adhesive tape, a traverse winding method is adopted, similar to sewing thread. And recently 50il]
There are also requests for carrier tapes of OWL ~ 6000 trL, and we will be shipping 10,000 trL in the near future. It is expected that there will be requests for tapes as long as 300 mm.

When the length of the tape to be wound becomes large, the traverse width at the time of winding must be increased, and 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), the reason is not clear, but as shown in Figure 2, the winding surface of the tape may be The tape will have a raised shape at both ends, and if the ramp width of the tape is wide (if there is a large overlap width), the tape will have a raised shape at the center of the winding surface, as shown in Figure 3. , it is difficult to wind the film so that the winding surface is horizontal as shown in FIG. The above-mentioned tendency becomes stronger as the tape is wound longer, and there are problems such as not only poor winding appearance but also undesirable packaging at ℃ for 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, an explanation will be given based on FIGS. 5 and 6.

When winding the tape 19 in a traverse manner onto 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 winding shaft 6 is rotated, the pulley 5 on the same axis is also rotated, and the timing belt 7 is rotated.
This rotates the pulley 9 on the intermediate transmission shaft 8, rotates the speed change gear 10 (for adjusting the lap width) on the same axis, and simultaneously transmits the rotation to the speed change gear 12 (for adjusting the ramp width).
The pulley 13 on the same axis of the intermediate transmission shaft 11 is rotated, and the scroll camshaft 16 (
Pulley 15 on top (determines traverse width and ramp width)
By rotating the scroll camshaft 16, a guide roll 18 is installed along the cam groove formed in the scroll camshaft 16.
By reciprocating from side to side, the tape 19 passes through the tin roll 21 and is wound up in a traverse shape onto the paper tube 20. Next, a method for changing the 1 traverse width a and the ramp width C shown in FIG. 7 will be described.

When widening or narrowing the traverse width a shown in FIG. 7, the scroll cam 16 must be replaced.
It takes time to replace them, and it is also necessary to prepare the necessary number of replacement scroll cams as spares.

In addition, when changing the ramp width C (overlapping width with the previously wound tape), the speed change gear 10 of the intermediate transmission shaft 8 and the speed change gear 12 of the intermediate transmission shaft 11 shown in FIG. It is necessary to make the lamp width C a predetermined width by converting the lamp width to a predetermined width by changing the rotation speed of the scroll cam 16, and it is necessary to prepare a spare gear.0 Change the gear as described above. Therefore, when the rotational speed of the scroll cam 16 is increased, the reciprocating speed of the cam 7 roller 17 becomes faster, and the reciprocating speed of the guide roll also becomes faster, so that the ramp 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 difficult to change the wrap width while winding a single tape. It is virtually impossible.

Next, an overview of the normal/reverse rotation type of the servo motor 107 on the traverse winding method 123 that can automatically change the traverse width and wrap width will be explained based on FIG. A guide roll 126 transmits rotation to the take-up shaft through pulleys 129 and 130, and moves left and right on a ball screw 125 set on the take-up shaft, whose direction of rotation changes as the paper tube rotates. The chip 124 guided and supplied by the machine is wound up using a traverse winding method similar to sewing thread. That is, the guide roll 126 is, for example, a 10 m/1 rotation ball screw 12.
5, and the servo motor 107 is attached to 1.
Each time the guide roll rotates, the guide roll moves 10 m to the left or right by the forward or reverse rotation of the servo motor. - The rotation transducers 117 and 108 of the take-up motor 116 and the servo motor 107 operate basically using 1000 pulses and 71 rotations, and the rotation transducer 117
The frequency of the generated pulse is divided by the frequency division counter 109, and the addition/subtraction counter 104 performs calculations with the pulse of the rotation transducer 108 of the servo motor 107, and the deviation is transmitted to the -A 105 and the servo amplifier 106. Controls 1070 rotations of servo motor.

For example, if the frequency division in the frequency division counter 109 is set to 1/2, when the rotation transducer 117 of the winding motor 116 rotates once, 500 pulses are sent to the addition/subtraction counter through the division counter 109, and the counter Inside, the servo motor 1070 is calculated with the pulses sent from the rotation transducer 108, and at the same time a deviation signal is output from the addition/subtraction counter.The servo motor 107 is controlled by this deviation signal to rotate half a rotation, and the addition/subtraction counter outputs a deviation signal. - 500 pulses are sent to the subtraction counter and the guide roll 126 moves 5 steps, reducing the tape width to 10.
As for the gourd tape, it will be a half ramp.

Since the division ratio is proportional to the ramp amount and inversely proportional to the lamp width, the division ratio is set in the frequency division counter using the ramp amount setting digital switch, taking this into consideration.

In addition, the traverse width (tape winding width) is set in the subtraction counter 102, and the pulse signal from the servo motor 1070 rotating playing card user is subtracted from the counter 102.
2, performs subtraction in the subtraction counter, and the value is 0.
When this occurs, 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.

The value of the first straverse width setting digital switch 101 is set in the subtraction counter 102, and the value of the ramp amount setting digital switch 120 (or 121) is set in the frequency division counter 109 by the digital switch changer 110. When the value of the traverse width setting switch 101 is entered into the subtraction counter 102, the forward/reverse switching circuit 119 is first set to forward 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 starts 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 at the middle gate of the traverse and winds the tape onto the paper tube in a traverse pattern.

When the winder 116 starts rotating, the pulse from the rotary transducer 117 linked to the motor is frequency-divided to a value preset in the frequency division counter 109, and this frequency-divided pulse is sent to the gate 111. The signal is transmitted from the forward/reverse switching circuit 119 to the addition/subtraction counter 104, and is added to the counter. 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, a pulse from the rotation transducer 108 linked to the servo motor 1o7 is also transmitted to the addition/subtraction counter 104 via the forward/reverse discriminator 118 and the forward/reverse switching circuit 119, and the counter is subtracted. 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 according 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) in which the guide roll 126 is set, the rotation speed of the servo motor 1070 is set to a predetermined value, that is, the frequency division value of the frequency division counter or the Σ()1-flag. When the value K is set, the rotation speed of the servo motor 107 is controlled so that the guide roll moves by the width of the tape while the take-up shaft rotates twice.

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 to cause the subtraction counter 102 to perform a subtraction, so that the traverse width setting value set in advance in the subtraction counter becomes 0. When this happens, the traverse of the tape guide roll in one direction ends. When this value becomes 0, the signal from the hour detector 103 closes the gate 111 and stops the servo motor 107, and the zero detector circuit sets both ends stopping amount (the number of times the tape is wound at the end of the traverse width). The value of the digital switch 115 is set to the subtraction counter 113, the gate 112 is turned on at the same time, the pulse of the rotary transducer 117 linked to the winding motor 116 is transmitted to the subtraction counter 113, and the value of the both-end stop amount setting digital switch 115 is set. Subtraction is performed until the set value becomes 0, and this value is detected by the OK time detector 114, and the traverse width setting digital switch 101 is actuated by the 0 signal, and the value is set in the subtraction counter 102. In this case zero detector 1
03 detects that the nitraverse width of the subtraction counter 102 is cent, and in response to the signal, opens the gate 111, closes the gate 112, and switches the forward/reverse switching circuit 119. Due to this switching, the servo motor starts reverse rotation. Therefore, Polnezi also 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 way as described above.

In a winding device that automatically changes the traverse width, ramp, 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 this, it is possible to easily change the traverse width 4 and the ramp middle, and by changing the setting value of the both-end stop amount setting digital switch, it is also possible to easily change the number of tape windings at the traverse end. It is.

Even when such an apparatus is used, conventionally, when winding a long tape, it has not been done to improve the winding shape by changing the inside of the lamp midway through the winding.

[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 being rolled at both ends of the winding surface or from the center of the winding surface. The purpose is to provide a method for winding.

[Structure of the invention]

The present invention provides a method for winding a long adhesive tape using a traverse winding method, which is characterized in that the ramp of the adhesive tape is changed every fixed winding length. This is a method of winding.

The present inventors discovered that when a long adhesive tape is wound using the trapper one-pass winding method, both ends of the winding surface bulge as shown in Figure 2, or conversely, as shown in Figure 3. The central part of the winding surface swells up, making it impossible to obtain a winding tape with a horizontal winding surface as shown in Figure 4. We were conducting various studies on the winding method to achieve the desired shape, and found that although it varies depending on the material and thickness of the tape base and the thickness of the adhesive applied, it generally works when the wrap pitch is wide, for example when it is less than a half-ramp. It has been found that when the wrap pitch is narrow, for example, half a wrap or more, the winding 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-like or large-drum-like depends on the inside of the lamp. Therefore, for various tapes, we investigated the ramp to make the winding surface flat when winding with the traverse method, but we were unable to find the ramp, or wrap pitch, 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 related to each other.

Therefore, when winding a long adhesive tape using the traverse method, first wind it so that the ramp width is, for example, less than a half ramp, and when the winding surface becomes drum-shaped, the ramp width is
It was found that when the film was wound at -7 lamps or higher, the winding surface became flat.

Although it depends on the type of tape, for a carrier tape with a width of 5fi, a base material thickness of 40μ, and an adhesive layer thickness of 25μ, the wrap width is increased by 115μ for every approximately 2001n of winding.
It has been found that by switching from 2/3 to 2/3, the winding surface becomes horizontal.

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

FIG. 1 shows a mechanical traverse winding machine, in which the transmission gears 10 and 12 of the winding machine shown in FIG. 5
They have the same meaning as the symbols shown in the figure, 26 is a transmission, 27
．． 29 is a pulley, 28 is a belt, and 30 is a pilot motor.

In the winding machine shown in FIG.
While observing the shape of the winding surface of the tape 19 to be wound on the tape 19, if the shape becomes, for example, a drum shape, the pilot motor 30 changes speed so that the ramp width of the tape becomes larger than before, and the scroll cam is rotated. If the shape of the winding surface of the tape 19 becomes drum-shaped, the speed changer will increase the rotation speed of the scroll cam so that the ramp width becomes smaller than before. By adjusting the tape, 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 ramp width explained based on FIG. 8 and FIG. The lamp 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 lamp setting digital switches 120 and 121 are set in the frequency division counter 109 by a signal from the wrap amount changeover command device 122. By automatically switching the division 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.
A switching command may also be issued.

As explained above, in the method of the present invention, when winding a long adhesive tape using the traverse method, by changing the ramp width of the tape for each fixed winding length, the winding surface is flat. A tape that is easy to wrap and pack can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a mechanical traverse winding machine for explaining the method of the present invention, FIGS. 2, 3, and 4 are diagrams for explaining the cross section of the wound tape, and FIG. 6 and 6 are diagrams for explaining a conventional winding machine, and show a schematic plan view and a schematic side view, respectively. FIG. 7 is a drawing showing the tape winding situation, and FIGS. 8 and 9. FIG. 2 is a schematic diagram for explaining a winding device that can automatically change the lamp width and the like. DESCRIPTION OF SYMBOLS 1... Winding motor, 6... Winding shaft, 16... Scroll camshaft, 18... Guide roll, 19
... tape, 20 ... paper tube, 21 ... touch roll, 26 ... transmission, 101 ... traverse width setting digital switch, 102 ... subtraction counter, 104
- Addition/subtraction counter, 106... Servo amplifier, 107... Servo motor, 108, 117...
Rotating transducer, 109... Frequency division counter, 1
10...Digital switch changer, 120, 121.
...Lamp amount switching digital switch, 122-Wrap amount switching command device, 123...Paper cylinder, 124...Tape,
125...Ball screw, 126...Guide roll

Claims (1)

[Claims] t A method of winding a long adhesive tape using a traverse winding method, which is characterized by changing the ramp width of the adhesive tape for each fixed winding length, and winding the adhesive tape so that the winding surface is horizontal. How to take.