JPS6025351B2 - Slitter tape winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape winding device for a slitter that winds a plurality of shredded tapes onto a tape winding reel.

The wide web is slit into narrow tapes using a slitter. These cut tapes are each wound on a plurality of tape winding rolls alternately arranged in a staggered manner, and both edge ends (hereinafter simply referred to as ears) are wound on two edge end winding rolls. (hereinafter simply referred to as the selvedge winding roll). A plurality of tape winding rolls are supported on the same rotating shaft that rotates at a constant speed.

In order to make the rotational torque of the tape winding roll variable, for example, a sliding village (friction plate) is interposed between the rotating shaft and the tape winding roll, and the tape winding is performed by applying pressure to the side surface of the tape winding roll. The take-up roll and the sliding plate are in strong contact, so that the torque of the tape take-up roll is increased. Generally, when winding tape, rather than winding it with a constant tension,
Winding with so-called taper winding, in which the tension decreases somewhat depending on the winding diameter, is more effective in preventing winding misalignment.

However, in conventional devices, the tape winding reel is rotated at a constant torque or under program control so that a desired torque is transmitted from a rotating shaft that rotates at a constant speed.

The former constant torque rotation keeps the side pressure of the tape winding roll at a constant value and is easy to control, but since torque and tension are inversely proportional, the tension decreases significantly as the winding diameter increases. There is a difficulty in doing so.

In the latter program control, the relationship between time and lateral pressure is programmed and the tape is wound at a desired tension.

Although this program control allows for fairly good winding, it has the disadvantage that the device becomes complex and expensive. SUMMARY OF THE INVENTION In view of the above drawbacks, it is an object of the present invention to provide a winding device for a slitter that is capable of controlling the tension of a tape winding roll with a simple device.

The device of the present invention electrically detects the rotational speed of the ear winding reel that rotates at a constant torque or the tension of the ear wound on it, inverts this signal, biases it, and raises the level. This device is characterized in that the lateral pressure of the tape winding roll is controlled by the signal received.

In other words, since the ear winding wheel is rotating at a constant torque,
As the winding diameter increases, the tension decreases.

Furthermore, since the line speed of the slitter (slitting speed) is constant, the rotation speed of the edge winding roll decreases as the winding warp increases. Therefore, by using the tension or rotational speed signal and inverting it, a signal whose level increases as the winding diameter increases can be obtained.

Therefore, if the side pressure of the tape winding roll is controlled using this signal, the degree of decrease in tension will be smaller than in constant torque winding, and the tape can be wound at a value close to the ideal tension. Embodiments of the present invention will be described in detail below with reference to the drawings. In FIG. 1, a web take-up reel 1 has a wide web 2 on it.

It is rolled up into a roll. This web 2 is pulled out from a web winding loop and is cut by a disc-shaped slitting cutter 4 which is rotated at a constant speed by a drive motor 3. This pongee cutting consists of both ears 5, 6 and multiple narrow tapes 7, 8, 9.
and is cut off. Note that these numbers 7 to 9 do not represent one tape, but represent the thin pieces of a plurality of tapes collected every two as will be described later. In order to keep the tension of the web 2 constant, a tension detector 10 is provided, and a brake mechanism 11 of the web winding roll 1 is controlled by a signal from the tension detector 10.

The ears 5 and 6 on both sides are wound around ear winding rolls 12 and 13, respectively.

The ear winding wheels 12 and 13 are connected to drive motors 14 and 15, respectively, to which a constant value of current is supplied.
This results in constant torque rotation. The tapes 7, 8, 9 located between the ears 5, 6 and cut into a plurality of pieces are wound onto tape winding rolls 16, 17, 18. These tape winding rolls 16 to 18 are connected to a friction clutch mechanism 19.
, 20, 21 to a drive motor 22 which rotates at a constant speed. A set of tape winding devices will be described with reference to FIG. 2. A gear 24 is mounted on a rotating shaft 23, and this gear 24 meshes with an output gear of a drive motor 22.

A pair of bearings 25 and 26 are attached to this rotating shaft 23, and these bearings 25 and 26 are supported by a bracket. When replacing the reel, the entire shaft is removed from the placket. The tape winding roll 16 is composed of a plurality of tape winding rolls 16a, 16b, . . . 16n, and winds up every second tape 7a, 7b, .

Each tape winding roll 16a-16n is iron-coupled to a sleeve 28a-28n fixed to the rotating shaft 23 via a bearing 27a-27n. This sleeve 28
Sliding materials (friction plates) 29a to 29n are interposed between a to 28n and the side surfaces of the tape winding rolls 16a to 16n, respectively. Drums 30 and 31 are played on both sides of the former reporter handles 16a to 16n.
, 31 are pushed inward by pressure levers 32, 33, respectively.

The pressure levers 32 and 33 are connected to actuators 34 and 35.
is connected to the piston. Actuator 34,3
Since the levers 5 are operated by air pressure, the pressing force of the pressure levers 32 and 33 can be adjusted by controlling the air pressure. If this pressing force is large, the sliding members 26a to 29n
Since the sleeves 28a to 28n and the tape winding rolls 16a to 16n strongly contact each other through the tape winding rollers 16a to 16n, the winding torque changes and the winding tension of the tapes 7a to 7n can be set to a desired value. Note that the individual tape winding rolls 16a~
16n is equipped with bearings 27a to 27n, so there is no tension variation due to uneven thickness of each tape. is absorbed and can be wound up with the same tension. The ear winding roll 12 rotates at a constant torque.
A pulse oscillator (encoder) 36 is connected to the rotating shaft of the motor and outputs a frequency signal according to the number of rotations.

This frequency signal is converted into a voltage by an F/V converter 37. The output signal A of this F/V chamber exchanger 37 is sent to an inverting circuit 38.
is reversed. The output signal B of the inversion circuit 38 is biased by a bias circuit 39 and level-converted into a signal C. The speed increase circuit 40 is for increasing the winding tension at the beginning of winding, and the deceleration circuit 41 is for decreasing the winding tension at the end of winding.

The biased signal C and the output signal D of the speed increasing circuit 40
, the output signal E of the deceleration circuit 41 is sent to the conversion device 45 via switches 42, 43, and 44 that are selectively turned on.

This converting device 45 adjusts the air pressure according to the input signal, and transfers this pressurized air to the friction clutch devices 19, 20,
For example, the actuators 21 are sent to 34 and 35. Next, the operation of the present invention having the above configuration will be explained.

The web 2 pulled out from the web winding roll 1 is shredded by a slitting cutter 4. The cut selvedges 5 and 6 are wound up on selvage winding rolls 12 and 13, respectively, which rotate at a constant torque. On the other hand, a plurality of tapes 7, 7a to 7n, 8,
8a to 8n, 9, 9a to 9n are tape winding rolls 16,
16a-16n, 17, 17a-17n, 18, 18a
It is wound up to ~18n. At the beginning of winding, the switch 43 is turned ○N, and the output signal D of the intensifying circuit 40 is sent to the variable winding device 4.
5 and converted to air pressure.

This pressurized air is sent to friction clutch mechanisms 19, 20, 21. With this air pressure, for example, the friction clutch mechanism 1
9 actuators 34 and 35 are actuated. When the actuators 34 and 35 operate, the pressure levers 32 and 33
Accordingly, the sliding members 29a to 29n and the tape winding roll 1
The sides of 6a to 16n are in contact.

Due to this frictional coupling, the tape winding reel 1 receives torque from the rotating shaft 23 which is driven at a constant speed by the drive motor 22.
6a to 16n wind up tapes 7a to 7n. Since the signal D has a large value, the tape winding rolls 16a~
The lateral pressure at 16n increases and the tape is wound up with strong tension until time TI.

At time TI, the switch 43 is turned OFF and the switch 42 is turned ON instead. The ear winding reel 12 is rotating at a constant torque. In the case of constant torque rotation, since the line speed is constant, the winding diameter and the number of revolutions are inversely proportional, and the number of revolutions decreases as the winding diameter increases. The rotation speed of this ear winding reel 12 is detected by a pulse oscillator 36,
Output as a frequency signal.

This frequency signal is converted into a voltage by the F/V converter 37 and output as a "signal A. The waveform of this signal A is
As shown in the figure, it decreases as the winding diameter increases. This signal A is input to an inversion circuit 38, where it is inverted to signal B.

This signal B is biased by a bias circuit 39 and converted into signal C. This signal C is sent to the conversion circuit 45 through the switch 42, which is turned on between time TI and T2. This conversion circuit 45 converts the pressure into air pressure, and adjusts the side pressure of the tape winding rolls 16 to 18. As shown in FIG. 4, when the lateral pressure is kept constant, the tension decreases as shown by curve 1 as the winding diameter increases.

However, the signal C obtained during the time TI to T2 is
Since the waveform increases with time (winding diameter),
When the lateral pressure is controlled by this signal C, the rate at which the tension decreases becomes small as shown by curve 0, and a tension close to the ideal one that gradually decreases in accordance with the winding ridge is obtained. When time T2, which is the final stage of winding, is reached, the switch 42 is turned off and the switch 44 is turned on.

As a result, signal E from deceleration circuit 41 is input to conversion circuit 45. Therefore, the tape winding rolls 16 to 18 are
The side pressure is controlled by a signal F obtained by combining signals C, D, and E, and winding is performed at a desired tension.

Further, since the winding torque and the tape tension are inversely proportional, if the winding torque is kept constant, the tension decreases as the winding diameter increases.

This tension curve has the same curve as the rotation speed curve. Therefore, the tension of the ear 5 can be detected by the tension detector 46 and used in place of the number of revolutions. The present invention having the above configuration detects the number of revolutions of the selvage winding reel that rotates at a constant torque or the tension of the selvage wound thereon, and inverts this signal and adjusts the mustard bell to wind the tape. Since it adjusts the rotational torque of the take-up reel, it is possible to obtain take-up tension close to the ideal value with a simple configuration.In addition, the selvage take-up reel allows you to simply reel from the shaft instead of replacing each shaft. Since the reel is normally removed, the pulse oscillator that detects the number of rotations of the ear winding reel has the advantage that there is no need to modify the reel when changing the reel.

In addition to the method of adjusting the lateral pressure of the tape winding reel as explained above, methods for adjusting the rotational torque of the tape winding reel include a method of using a variable torque motor for each reel, or a method of using an electromagnetic brake. There are methods such as using .

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the present invention, Fig. 2 is a half-sectional view of the winding device, Fig. 3 is a graph showing signal waveforms, and Fig. 4 shows changes in tension for constant torque rotation and the method of the present invention. This is a graph. 1... Web winding rule, 2... Web,
4... Slitsutenkatsuta 5, 6... ears, 7~
9... Tape, 12, 13... Ear winding roll,
16, 18...Tape winding roll, 19-21...
...Friction clutch mechanism. Figure 4 Scale diagram N Shigeru Figure 3

Claims (1)

[Scope of Claims] 1. A wide web is shredded with a slitting knife into a selvage end and a plurality of tapes, and the selvage end is wound onto an selvage end take-up reel that rotates at a constant torque. A slitter for winding a tape onto a tape take-up reel includes means for adjusting the rotational torque of the take-up reel, means for detecting the number of revolutions of the edge end take-up reel, and converting a signal from the detection means into a voltage. means for inverting the signal, and means for biasing the inverted signal, the biased signal being input to the rotational torque control means for the tape take-up reel to control the rotational torque. A tape winding device for slivers featuring: 2 A wide web is shredded into a selvage end and a plurality of tapes using a slitting knife, and the selvage end is wound onto an selvage end take-up reel that rotates at a constant torque, and the tape is also placed on a tape take-up reel. In a slitter that winds up a slitter, means for adjusting the rotational torque of the take-up reel, means for measuring the tension of the edge end wound on the edge end take-up reel, means for inverting the signal from the measuring means, and A tape winding device for a slitter, comprising means for biasing this inverted signal, and the biased signal is input to a rotational torque control means of the tape winding reel to control the rotational torque. .