JPH02225243A - Dividing taking-up device for sheet - Google Patents

Abstract

PURPOSE:To permit a narrow width sheet to be taken up onto a spool under a prescribed contact pressure by constituting the title device so that the driving power of a feed roller revolution driving mechanism is transmitted to an assorting roller through a continuously variable transmission and the assorting roller is revolution-driven at a prescribed speed. CONSTITUTION:The title device is equipped with a touch roller supporting body 21 which supports a touch roller TR so that it following-revolves, accompanied with the revolution of a sheet roll R, contact pressure adjusting means 24 for adjusting the contact pressure between the touch roller TR and the sheet roll R, guide roller 11 installed so as to guide each narrow width sheet divided by a slitter K, in arrangement, and an assorting roller 12 which is installed in parallel on the front and rear assortment sides in a sheet traveling passage for the narrow width sheet which leads from the guide roller 11 to the touch roller TR and revolution-driven by a feed roller revolution driving mechanism through each continuously variable transmission mechanism.

Description

Detailed Description of the Invention (Industrial Application Field) This invention unwinds a strip-like sheet of paper, plastic, etc. from a raw roll, divides it into multiple narrow sheets with a thrifter, and distributes them back and forth. The present invention relates to a sheet dividing winding device that winds each narrow sheet onto a centrally driven core via individual touch rollers.

(Prior art) In this type of sheet dividing and winding device, when winding up the divided narrow sheet supplied to the first roll core, it is generally done to bring a touch roller into contact with the surface of the sheet roll. It is being said. In order to improve the quality of sheet rolls, it is necessary not only to properly control the driving torque at the winding core and the contact pressure between the touch roller and sheet roll, but also to control the elongation of the sheet just before winding, that is, the sheet being fed. It is necessary to properly manage the tension.

For example, in Japanese Patent Publication No. 53-47870, sheets are fed by providing a large-diameter stationary touch roller that commonly contacts the front and rear sheet rolls and actively driving the roller. Controlling tension is disclosed. However, actively driving a long, large-diameter common touch roller has many disadvantages due to the influence of inertia.

Therefore, one applicant has published Japanese Patent Application Laid-open No. 167844/1983.

In particular, in FIG. 3, a sheet division method is shown in which a small-diameter touch roller is provided corresponding to each sheet roll, each touch roller is actively rotated, and its rotational speed can be slightly changed by a transmission device. A winding device was proposed.

In other words, the technique described above adjusts the elongation of the sheet by operating a transmission device according to the winding conditions and adjusting the circumferential speed of the touch roller. For example, in the case of a thin and easily stretchable sheet, the sheet is in a stretched state just before being wound up because the feed roller pulls out the belt-shaped sheet from the raw roll and returns it one roll. Since the contractile force caused by this causes problems such as winding and squeezing on the sheet roll, in the case of the above technique, the circumferential speed of the touch roller is slower than that of the delivery roller, thereby relaxing the elongation of the sheet and winding it up.

(Problem to be solved by the invention) However, in today's world where higher winding speeds are required and sudden accelerations and decelerations tend to be carried out frequently, the conventional technology shown in the above publication does not solve the following problems. Problems like this may occur.

That is, when an individual small-diameter touch roller supported by a swing arm is actively driven at high speed, the touch roller is likely to vibrate due to imbalance of the transmission mechanism or the like.

Further, the load on the touch roller affects the swinging force of the swinging arm, that is, the pressing force of the touch roller against the sheet roll.

The above-mentioned situation becomes an obstacle to accurately controlling the contact pressure, and problems such as uneven end surfaces of the wound sheet roll occur.

(Means for Solving the Problem) Therefore, the present invention adjusts the elongation in advance and sends the divided narrow sheets to the touch roller, and adjusts the contact pressure between the touch roller and the sheet roll and the driving torque of the first core. Provided is a sheet division winding device capable of winding up a sheet while independently and accurately controlling the winding tension applied to each sheet, the sheet division winding device being able to a slitter that divides the wide belt-shaped sheet rewound from the slitter into a plurality of strips; a feed roller provided on the sheet travel path upstream of the slitter and guides the rewound wide belt-shaped sheet to the slitter; a feed roller rotation drive mechanism that rotationally drives the roller; a winding core that is arranged corresponding to the narrow sheet that is divided by the slitter and distributed to the front and back winding positions, and that winds the narrow sheet onto a sheet roll; a pair of winding arms that support the winding core; a core rotation drive mechanism that centrally drives the winding core with a required torque;
It is equipped with touch rollers arranged corresponding to each core and capable of contacting the sheet roll wound on the core which is centrally driven by the core rotation drive mechanism. In a sheet dividing winding device that separates the winding core on each side of the winding position from the touch opening roller in one go, the sheet dividing winding device is provided corresponding to the touch roller and rotates the touch roller in accordance with the rotation of the sheet roll. a touch roller support that supports the touch roller support, a contact pressure adjustment means that engages with the touch roller support and adjusts the contact pressure between the touch roller and the sheet roll, and a common touch roller support that supports each narrow sheet divided by the slitter. is designed to guide you to
A guide roller rotationally driven by the feed roller rotation drive mechanism and a sheet running path for the narrow sheet from the guide roller to the touch roller are provided in parallel on the front side and the rear side, respectively, and each is provided with continuously variable speed. The distribution device is characterized in that it includes a roller that is rotationally driven by a feed roller rotation drive mechanism via a mechanism.

(Function) Therefore, according to the sheet dividing and winding device of the present invention, distribution is provided for each of the front side and the rear side, and each distribution that is actively rotationally driven by the feed roller rotation drive mechanism does not require a roller. Since the speed can be changed by manipulating the gear ratio in the step-change transmission mechanism, for example, the above-mentioned distribution is performed so that the peripheral speed of the roller is slightly slower than that of the guide roller driven by the feed roller rotation drive mechanism. By operating the speed change mechanism, the distribution adjusts the elongation of the sheet at the roller stage,
After the adjustment, send the appropriate narrow width sheet to the touch roller 1
It can be wound onto a core.

(Example) The present invention will be explained below based on the illustrated embodiments.

FIG. 1 is a front view schematically showing a sheet dividing and winding device applied to the present invention, and FIG. 2 is an explanatory plan view showing various drive transmission paths in FIG. The strip-shaped sheet S unwound from the original fabric roll 2 passes through an unwinding roller group consisting of guide rollers 3, 4° 5.6 and a feed roller group consisting of guide rollers 7, 8, 9, 10, and then to a slitter roller (guide roller). 11, is divided into a plurality of narrow sheets S' by a slitter K, and is distributed to the front and back, and the narrow sheets S' are distributed to the front side and the rear side on the sheet running path from the guide roller 11 to the touch roller TR. The sorting sheets arranged in parallel on each side reach the rollers 32.12, and then the narrow sheets S' on the negative side reach the touch rollers 1
After passing around the upper half of the touch roller TH, the narrow sheet S' on the other side passes around the lower half of the touch roller TH, and then the narrow sheet S′ on the other side passes around the lower half of the touch roller
It is wound up as a sheet roll R on top. In addition, in the above distribution, the roller 12 is arranged at a predetermined position so that the tension of the narrow sheet wound around the roller 12 does not substantially affect the contact pressure between the touch roller TR and the sheet roll R. has been done. Both ends of the winding core C are rotatably supported at the tips of a pair of left and right abbreviated winding arms 13, and each winding core C is connected to a motor as a winding core rotation drive mechanism, in this case an AC servo motor. Center driven by. The winding arm 13 has a base 15 engaged with a dovetail-shaped rail on the upper part of a spacing adjustment table 14 provided in the sheet width direction, and is movable in the sheet width direction by a well-known moving mechanism.

On the other hand, according to this embodiment, as the sheet roll radius increases, the distance adjustment table 14 is adjusted by a drive mechanism (not shown).
This drives the winding arm 13 and the winding core C integrally in the direction extending the line connecting the axis of the winding core C and the axis of the touch roller TH (during winding, the winding core is moved It is possible to move linearly in the direction of separation. The sheet division winding device may be of a type in which, for example, the winding arm is swung together with the interval adjustment table as the sheet roll grows, and is separated from the touch roller that is the core of one winding.

The touch roller TR, which is in contact with the outer periphery of the sheet roll, has a central axis fixed to the upper end of a pair of left and right touch roller supports 21 and 21 that can swing around a support @20, and is rotated by the sheet roll R. It will be done. The touch roller support body 21 is connected to a guide support beam 2 provided in the sheet width direction.
It is supported by a base portion 23 that engages with rails on the side surfaces of the seats 2 and is movable in the width direction of the seat. A fluid pressure cylinder 24 serving as a contact pressure adjusting means for adjusting the contact pressure between the touch roller TR and the sheet roll R by X1 m has its base end connected to the base 2.
3, and the tip is attached to the lower end of the touch roller support 21.

As specifically shown in FIG. 2, the material roll 2 supported by the support 1 is actively rotated in the unwinding direction by the unwinding motor M2. Further, the rotational speed of the chain unwinding motor M2 is detected by the one-rotation pulse generator 26, and the detection signal is fed back to the unwinding motor control panel 27 and a control device to be described later.

M3 is the feed roller group 7, 8, 9. A feed roller rotation drive mechanism for rotationally driving the IQ, in this case a feed motor. However, the drive in the feed motor I3 is as follows:
It is also transmitted to the unwinding roller groups 3, 4, 5.6 via the continuously variable transmission mechanism 28. Further, the drive of the motor M3 is also transmitted to the slitter roller 11 via the continuously variable transmission mechanism 29, and the distribution is transmitted to the rollers 12 and 12 via the respective continuously variable transmission mechanisms 30 and 30. . In other words, the various rollers 3 to 12 are rotationally driven by a common motor M3. As in this embodiment, distribution to the slitter roller 11 as a guide roller not only makes it possible to change the rotational speed of the roller 12, but also makes it possible to change the speed of the slitter roller 11 relative to the feed roller group. In this case, the elongation of the sheet can be adjusted to a certain extent in advance at the stage leading to the slitter roller 11, and only the final fine adjustment can be performed at the stage of the roller 12, which allows the elongation of the sheet to be adjusted in stages. This has the advantage of being adjustable. Also, the speed of the five rollers can be changed independently, so 1. Depending on the difference in sheet path, the winding of the rollers, the difference in corners, etc., the elongation of the distributed sheets is adjusted to be the same on both sides, and the distribution can be sent out from the rollers.

Furthermore, during acceleration and deceleration during high-speed operation, there is no adverse effect on the elongation of the sheet due to the inertia of the rollers during distribution.

Note that g1 is a rotational pulse generator that detects the rotational speed of the feed motor M3, and its detection signal is fed back to the feed motor control g@32.

Further, the motor M1 that rotationally drives the winding core C is driven to rotate at a predetermined drive torque or speed based on a command from the winding motor control gi133. Furthermore, the rotational speed of motor M1 is detected via rotational pulse generator 19.

As for the unwinding motor control g#27, the unwinding motor control panel 32, and the winding motor control panel 33.

Centrally controlled by the control device shown in FIG.
Each corresponding motor is driven at a predetermined speed or torque.

On the other hand, the above-mentioned continuously variable transmission mechanism combines a variable speed pulley whose speed can be changed by a rotary motor and a differential gear mechanism, making it possible to continuously change the rotational speed of the roller extremely minutely. Each continuously variable transmission mechanism 28.29.30
．． The predetermined speed change operation at 30 is performed centrally by a remote control unit 34. In addition, as the continuously variable transmission mechanism, other known continuously variable transmissions may be used as long as the rotational speed of the rollers can be slightly and continuously changed.

Unwinding roller group: 3, 4, 5. Unwinding roller 4 in a
, and the guide roller 11 are provided with differential transformers 35 and 36 for tension detection, and their respective detection signals (1) and (3) are input to the control device. Also, an unwinding roller 6, a feed roller 10, a guide roller 11. For distribution, the rollers 12 and 12 are equipped with rotating pulse generators 37, 38 and 39, 40 and 40, respectively.
are provided, and their respective detection signals ■, ■, ■, ■, ■
is also input to the control device.

As shown in FIG. 3, the control device receives setting signals from an input device 41 for setting winding tension, contact pressure, winding speed, and pulse generators 37 and 38, respectively.
．． Rotation speed detection signal from 39.40.40 ■, ■, ■,
Φ, ■, differential transformer 35 provided on the unwinding roller 4 and the guide roller 11. : Input the detection signals ■ and @ from 16, the rotational speed detection signal of the unwinding motor chu by the rotational pulse generator 25, and the rotational speed detection signal of the old winding motor by the rotational pulse generator 19, On the other hand, an electro-pneumatic converter (not shown) that adjusts the air pressure to the unwinding motor control panel 27, the feeding motor control panel 32, the winding motor control panel 33°, and the fluid pressure cylinder 24 according to the input electric signal There is an input/output section 42 that outputs predetermined output signals (■, ■, ■, ■), a storage section 43, and various signals input to the input/output section 42 and various signals stored in the storage section 43. Based on data of
are the unwinding motor control panel 27 and the feeding motor control panel 32.
, a winding motor control panel 33, a calculation section 44 that instructs the electro-pneumatic converter to perform a predetermined output, and the calculation section 4.
4, and a display section 45 that displays the calculated rotational speed of each roller. Therefore, the unwinding motor M2, the unwinding motor M3. The rotational speed and the like of the winding motor Ml are centrally controlled by the control device via the respective control panels 27, 32, and 33.

The optimum value of the elongation of the sheet immediately before winding the sheet is determined empirically and experimentally by test winding in advance, depending on the ease of elongation of the sheet, etc., so when winding the sheet,
While referring to the rotational speed of each roller, whose numerical value is displayed in detail on the display section of the control device, and in some cases, the state of the sheet actually running, in order to give the optimal elongation determined in advance, The switch of the remote control unit 34 is operated to adjust the gear ratio of the continuously variable transmission mechanism via the pilot motor.

In general, it is often sufficient to maintain the gear ratio at a constant value from the start of winding to the end under the same winding conditions, but as the amount of sheet winding increases, it is necessary to automatically change the gear ratio. In such a case, for example, the remote control section may be provided with a program control device to automatically control the gear ratio.

In addition, if it is convenient to stretch the sheet immediately before winding and wind it up to obtain a tightly packed sheet roll, the distribution should be made so that the circumferential speed of the roller 12 is wider than the circumferential speed of the guide roller 1. All you have to do is operate the continuously variable transmission mechanism as you see fit.

In the above-mentioned embodiment, the distribution is performed by a continuously variable transmission mechanism, and the rollers are rotationally driven by a feed roller rotation drive mechanism. An adjustable air-gap clutch may be used, in which case adjusting the excitation current flowing through the clutch's excitation coil will adjust the torque transmitted from the input shaft to the output shaft of the clutch. Therefore, by adjusting the adjustment, the elongation of the sheet can be made appropriate.

Although the present invention has been described above based on one embodiment, it is possible to make various changes and applications without changing the gist of the claims.

(Effects of the Invention) According to the present invention, the drive of a common feed roller rotation drive mechanism that rotationally drives the feed roller and the guide roller is distributed via a continuously variable transmission to separate drives provided for the front side and the rear side. This is transmitted to the roller, which is rotated at a predetermined speed, so that by adjusting the gear ratio of the continuously variable transmission mechanism, it is possible to adjust the elongation of each distributed narrow sheet. Therefore, in sorting, the roller sends out the narrow sheet to the optimal sheet tension value for winding to the touch roller, and it is possible to wind it with high quality on the center-driven core under a predetermined contact pressure. Become. Moreover, it is possible to provide a sheet dividing winding device that can be applied to winding up various sheets.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of a sheet dividing and winding device, FIG. 2 is a plan view showing a drive transmission path, and FIG. 3 is a diagram for controlling the drive of various motors. It is an explanatory view of a control device. 11...Guiding roller, 12...Roller for sorting, 2
DESCRIPTION OF SYMBOLS 1...Touch roller support body, 24-...Fluid pressure cylinder (contact pressure regulating means), 30...Continuously variable transmission mechanism, TR
...touch roller, R... sheet roll, K...
Slitter, S...band-shaped sheet, S'...narrow sheet 5M3...feed roller rotation drive mechanism.

Claims (2)

[Claims] (1) A slitter that divides the wide belt-like sheet unwound from the original roll into multiple strips, and a slitter installed on the sheet travel path upstream of the slitter to guide the unwound wide belt-like sheet to the slitter. A feed roller, a feed roller rotation drive mechanism that rotationally drives the feed roller, and a feed roller rotation drive mechanism that is arranged to correspond to the narrow sheet that is divided by the slitter and distributed to the front and rear winding positions, and is configured to roll the narrow sheet into a sheet roll. A core to be wound, a pair of winding arms that support the core, a core rotation drive mechanism that centrally drives the core with a required torque, and a core that is centrally driven by the core rotation drive mechanism. A touch roller is arranged corresponding to each winding core and is capable of contacting the sheet roll wound on the winding core.
As the sheet roll grows, the sheet dividing winding device separates the winding core on each side of the front and rear winding positions from the touch roller in one go. a touch roller support that is supported to rotate as a result of the rotation of the sheet roll; a contact pressure adjusting means that engages with the touch roller support and adjusts the contact pressure between the touch roller and the sheet roll; and a touch roller support that is divided by the slitter. a guide roller that is provided to commonly guide each of the narrow sheets and is rotationally driven by the feed roller rotation drive mechanism, and a front side and a rear side that distribute the narrow sheets on a sheet running path from the guide roller to the touch roller. 1. A sheet dividing and winding device comprising: a sorting roller that is provided in parallel to each other, and each of which is rotationally driven by a feed roller rotation drive mechanism via a continuously variable transmission mechanism. (2) The sheet dividing and winding device according to claim 1, wherein the sheet dividing and winding device is provided with an air-gap type clutch capable of adjusting transmission torque in place of the continuously variable transmission mechanism.