JP2640530B2 - Sheet split winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention rewinds a band-shaped sheet of paper, plastic, or the like from a raw roll, divides this into a plurality of narrow sheets by a slitter, and sorts the sheets back and forth. The present invention relates to a sheet dividing and winding apparatus for winding each narrow sheet around a core driven centrally via individual touch rollers.

(Prior Art) In this kind of sheet dividing and winding apparatus, it is common practice to bring a touch roller into contact with the surface of the sheet roll when winding the divided narrow sheet supplied to the core. Have been done. In order to improve the quality of the sheet roll, not only the drive torque at the core and the contact pressure between the touch roller and the sheet roll are properly controlled, but also the elongation of the sheet immediately before winding, that is, the supplied sheet. It is necessary to properly control the tension.

And, for example, in Japanese Patent Publication No. 53-47870,
It is disclosed that a large-diameter stationary touch roller is provided in common contact with the sheet rolls on the front and rear sides of the sorting, and the supplied sheet tension is controlled by positively driving these rollers. However, actively driving a long and large-diameter common touch roller has many disadvantages due to the influence of inertia and the like.

In view of this, the present applicant has disclosed in Japanese Patent Application Laid-Open No. 60-167844, particularly FIG. 3, that a small-diameter touch roller is provided corresponding to each sheet roll, and each touch roller is actively driven to rotate. Proposed a sheet split winding device whose rotation speed can be finely shifted by a transmission device.

In other words, the above-described technique operates the transmission in accordance with the winding condition and adjusts the peripheral speed of the touch roller to adjust the elongation of the sheet. For example, in the case of a thin and easily stretchable sheet, the sheet immediately before winding is stretched in order to draw out the belt-like sheet from the raw roll by the feed roller and to rewind the sheet. In the above technique, the peripheral speed of the touch roller is made slower than that of the feed roller, thereby reducing the elongation of the sheet and winding the sheet.

(Problems to be Solved by the Invention) However, in today's world where a higher winding speed is required and sudden acceleration and deceleration tend to be performed frequently, some of the conventional techniques disclosed in the above publications have the following problems. Such a problem arises.

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

In addition, the load of the touch roller is determined by the swing power of the swing arm,
That is, it affects the pressing force of the touch roller against the sheet roll.

The above situation becomes an obstacle in performing the contact pressure control precisely, and causes problems such as uneven end faces of the wound sheet roll.

(Means for Solving the Problems) In view of the above, the present invention sends the narrow sheet divided after adjusting the elongation in advance to the touch roller to reduce the contact pressure between the touch roller and the sheet roll and the driving torque of the core. The present invention provides a sheet split winding device capable of winding a sheet while independently and accurately controlling a winding tension provided in accordance with the sheet tension. A slitter that divides the wide band-like sheet unwound from the slitter into a plurality of strips, a feed roller that is provided on a sheet traveling path on the upstream side of the slitter, and guides the wide band-wound sheet that has been rewound to the slitter, A feed roller rotation drive mechanism for rotating the rollers; and a narrow sheet divided by the slitter and distributed to the front and rear winding positions. A pair of winding arms each supporting the core, a core rotation driving mechanism for center-driving the core with a required torque, and a core driven by the core rotation driving mechanism. A touch roller that can be brought into contact with a sheet roll wound on the winding core, and a touch roller arranged corresponding to each winding core. In a sheet split winding device that separates the touch roller from the touch roller at a time, a touch roller support that is provided corresponding to the touch roller and supports the touch roller so as to be driven to rotate with the rotation of the sheet roll; A contact pressure adjusting unit that engages with a support and adjusts a contact pressure between the touch roller and the sheet roll, and is provided so as to commonly guide each narrow sheet divided by the slitter; A guide roller that is driven to rotate by a revolving roller rotation drive mechanism, and a guide roller that is disposed in parallel on the sheet traveling path of the narrow sheet from the guide roller to the touch roller for each of a front side and a rear side, and each of which is provided via a continuously variable transmission mechanism And a distribution roller that is driven to rotate by a feed roller rotation drive mechanism.

(Operation) Therefore, according to the sheet split winding device of the present invention,
Each of the distribution rollers provided on the front and rear sides of the distribution and positively driven to rotate by the feed roller rotation drive mechanism can change the speed by operating the speed ratio in the continuously variable transmission mechanism. The continuously variable transmission mechanism is operated so that the peripheral speed is slightly lower than that of the guide roller driven by the feed roller rotation drive mechanism, thereby adjusting the sheet elongation at the stage of the distribution roller. The appropriate narrow sheet can be sent to the touch roller and wound on the core.

Hereinafter, the present invention will be described based on the illustrated embodiments.

FIG. 1 is a front view schematically showing a sheet dividing and winding apparatus applied to the present invention, and FIG. 2 is an explanatory plan view showing various drive transmission paths in FIG. The belt-shaped sheet S unwound from the web roll 2 is
It is supplied to a slitter roller (guide roller) 11 through an unwinding roller group consisting of guide rollers 3, 4, 5, and 6 and a feed roller group consisting of guide rollers 7, 8, 9, and 10. The sheet is divided into sheets S ′ and distributed back and forth, and reaches distribution rollers 12 and 12 provided in parallel on the front and rear sides of the sheet traveling path of the narrow sheet S ′ from the guide roller 11 to the touch roller TR. After that, the narrow sheet S 'on one side goes around the upper half of the touch roller TR, and the narrow sheet S' on the other side goes around the lower half of the touch roller TR. It is wound up as a sheet roll R. The distribution roller 12 is disposed at a predetermined position so that the tension of the narrow sheet wound around the distribution roller 12 does not substantially affect the contact pressure between the touch roller TR and the sheet roll R. I have. Both ends of the core C are rotatably supported at the tips of a pair of left and right substantially L-shaped winding arms 13, and each core C is a motor as a core rotation drive mechanism, in this case, an AC servomotor. Center driven by M1. The above-mentioned winding arm 13 is an interval adjustment table provided in the sheet width direction.
The base 15 is engaged with the dovetail-shaped rail 14 at the top, and can be moved in the seat width direction by a well-known moving mechanism.

On the other hand, according to this embodiment, as the sheet roll radius increases, the driving mechanism (not shown) drives the gap adjusting table 14.
To thereby extend the winding arm 13 and the winding core C integrally, and extend the line connecting the axis of the winding core C and the axis of the touch roller TR (the winding core is wound during winding). (In the direction in which they are separated from each other). The sheet dividing and winding device may be of a type in which, for example, the winding arm is swung together with the gap adjusting table along with the growth of the sheet roll, and the core is separated from the touch roller.

The touch roller TR in contact with the outer periphery of the sheet roll R is a pair of right and left touch roller supports that can swing around the support shaft 20.
The center axis is fixed to the upper end of 21, 21 and the sheet roll R
, And is driven to rotate. The touch roller support 21 is supported by a base 23 that is movable in the sheet width direction by engaging with a rail on a side surface of a guide support beam 22 provided in the sheet width direction. Touch roller TR and sheet roll R
The fluid pressure cylinder 24 as a contact pressure adjusting means for adjusting the contact pressure between the base and the base is attached to the base 23, 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 positively driven to rotate in the rewinding direction by the unwinding motor M2. Also, a rotating pulse generator
The rotation speed of the unwinding motor M2 is detected by 26, and the detection signal is fed back to the unwinding motor control panel 27 and a control device described later.

M3 is a feed roller rotation drive mechanism for rotationally driving the feed roller groups 7, 8, 9, and 10, in this case, a feed motor.
However, the drive of the delivery motor M3 is also transmitted to the unwinding roller groups 3, 4, 5, and 6 via the continuously variable transmission mechanism. 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 rollers 12, 12 are transmitted via the respective continuously variable transmission mechanisms 30, 30. That is, the various rollers 3 to 12 are driven to rotate by the common motor M3. As in this embodiment, not only the rotation speed of the distribution roller 12 can be changed with respect to the slitter roller 11 as a guide roller, but also the slitter roller 11 can be shifted with respect to the feed roller group. It is said that the elongation of the sheet is adjusted to some extent before reaching the slitter roller 11, and only the final fine adjustment can be performed at the stage of the distribution roller 12, whereby the elongation of the sheet elongation can be adjusted. There are advantages. In addition, since the distribution rollers can be shifted separately, the distribution of the spread sheets is adjusted so that the spread of the distributed sheets is the same on both sides according to the difference in the seat bus and the difference in the winding angle of the rollers. Can be sent from. Further, there is no adverse effect on the sheet elongation due to the inertia of the distribution roller during acceleration / deceleration in high-speed operation.

Reference numeral 31 denotes a rotation pulse generator for detecting the rotation speed of the delivery motor M3, and the detection signal is fed back to the delivery motor control panel 32.

Further, the motor M1 that rotationally drives the winding core C is rotationally driven at a predetermined driving torque or speed based on a command from the winding motor control panel 33. Further, the rotation speed of the motor M1 is detected via the rotation pulse generator 19.

Then, the unwinding motor control panel 27, the unwinding motor control panel 32, and the winding motor control panel 33 are intensively controlled by the control device shown in FIG. 3 and correspond to each other at a predetermined speed or torque. The motor is driven.

On the other hand, the above-described continuously variable transmission mechanism combines a variable speed pulley that can be shifted by a pilot motor and a differential gear mechanism, and is capable of extremely continuously changing the rotation speed of the roller. The predetermined shift operation in the continuously variable transmission mechanisms 28, 29, 30, 33 is performed intensively by the remote operation unit 34. As the continuously variable transmission mechanism, another known continuously variable transmission may be employed as long as the rotation speed of the roller can be minutely and continuously changed.

The unwinding roller 4 of the unwinding roller groups 3, 4, 5, and 6, and the guide roller 11 are provided with differential transformers 35 and 36 for detecting tension, and their respective detection signals are controlled. Input to the device. The unwinding roller 6, the feed roller 10, the guide roller 11, and the distribution rollers 12, 12 are provided with rotation pulse generators 37, 38, 39, 40, 40, respectively. , Are also input to the controller.

As shown in FIG. 3, the control device includes a setting signal from an input device 41 for setting a winding tension, a contact pressure, and a winding speed, and a pulse generator 37, 38, 39,4
,,..., The unwinding roller 4 and the differential roller 35, 36 provided on the guide roller 11
, A rotation speed detection signal of the unwinding motor M2 by the rotation pulse generator 25, and a rotation speed detection signal of the winding motor M1 by the rotation pulse generator 19, while controlling the unwinding motor. A predetermined output signal is supplied to an electropneumatic converter (not shown) that adjusts air pressure to the panel 27, the delivery motor control panel 32, the take-up motor control panel 33, and the fluid cylinder 24 according to an input electric signal. ,,
Input and output unit 42, storage unit 43, based on various signals input to the input and output unit 42 and various data stored in the storage unit 43, the rotational speed of each roller, a set value, Calculations regarding the winding diameter of the sheet roll and the unwinding diameter of the sheet roll are performed.
The unwinding motor control panel 27, the unwinding motor control panel 32, the take-up motor control panel 33, an arithmetic unit 44 for instructing the electropneumatic converter to perform a predetermined output, and each of the arithmetic units 44 The display unit 45 displays the rotation speed and the like of the rollers. Therefore, the rotation speed and the like of the unwinding motor M2, the unwinding motor M3, and the winding motor M1 are intensively controlled by the control device via the respective control panels 27, 32, 33.

The optimum value of the sheet elongation immediately before winding the sheet is
The ease of stretching of the sheet, the dimensions, etc., are empirically and experimentally determined in advance by trial winding, etc., so that at the time of winding, the rotation speed of each roller whose numerical value is displayed in detail on the display unit of the control device, And, in some cases, by referring to the actual running state of the seat, operate the switch of the remote control unit 34 via the pilot motor to operate the continuously variable transmission Adjust the gear ratio.

In general, the gear ratio under the same winding condition should be maintained at a constant value from the beginning to the end of winding in many cases.
If it is necessary to automatically change the gear ratio as the sheet winding amount increases, for example, a program controller may be provided in the remote control unit to automatically control the gear ratio.

Also, if it is convenient to stretch and wind the sheet just before winding to obtain a tightly tightened sheet roll, the peripheral speed of the distribution roller 12 is set to be larger than the peripheral speed of the guide roller 11. What is necessary is just to operate a continuously variable transmission mechanism.

In the above-described embodiment, the distribution roller is rotationally driven by the feed roller rotation drive mechanism via the continuously variable transmission mechanism. Instead of the continuously variable transmission mechanism, the transmission torque can be adjusted, for example, by a magnetic powder clutch. An air gap type clutch may be used. In this case, if the exciting current flowing through the exciting coil of the clutch is adjusted, the torque transmitted from the input shaft to the output shaft of the clutch is adjusted. Therefore,
The adjustment can make the elongation of the sheet appropriate.

As described above, the present invention has been described based on one embodiment. However, the present invention can be variously changed and applied without changing the gist described in the claims.

(Effects of the Invention) According to the present invention, the drive of the common feed roller rotation drive mechanism that rotationally drives the feed roller and the guide roller is provided to the distribution rollers provided on the front and rear sides of the distribution via the continuously variable transmission. Since the transmission is performed and the rotation is driven at a predetermined speed, the elongation can be adjusted for each of the narrow sheets distributed by adjusting the speed ratio of the continuously variable transmission mechanism. Therefore, it is possible to send out the narrow sheet having the optimum sheet tension value for winding by the distribution roller to the touch roller, and wind the sheet on the core driven at the center under a predetermined contact pressure with high quality. In addition, it is possible to provide a sheet division winding device that can be applied to winding various sheets.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is a front view of a sheet dividing and winding apparatus, FIG. 2 is an explanatory plan view showing a drive transmission path, and FIG. 3 controls the driving of various motors. It is explanatory drawing of a control apparatus. 11 ... guide roller, 12 ... distribution roller, 21 ... touch roller support, 24 ... fluid pressure cylinder (contact pressure adjusting means), 30 ...
Continuously variable transmission mechanism, TR: Touch roller, R: Sheet roll,
K: Slitter, S: Strip-shaped sheet, S ': Narrow width sheet,
M3: Feed roller rotation drive mechanism.

Claims (2)

(57) [Claims] 1. A slitter for dividing a wide band-like sheet unwound from a raw roll into a plurality of strips, and a wide band-like sheet provided on a sheet running path on an upstream side of the slitter and rewinding the wide band-like sheet. A feed roller for guiding, a feed roller rotation driving mechanism for rotating the feed roller, and a narrow sheet divided by the slitter and distributed to the front and rear winding positions; A winding core to be wound on a roll, a pair of winding arms supporting the winding core, a core rotation driving mechanism for center driving the core with a required torque, and a center driving by the core rotation driving mechanism A touch roller that can be brought into contact with a sheet roll wound on the winding core and that is arranged in correspondence with each winding core; A touch roller support provided to correspond to the touch roller and supporting the touch roller to be driven to rotate with the rotation of the sheet roll; and A contact pressure adjusting unit that engages with a body and adjusts a contact pressure between the touch roller and the sheet roll; and a feed roller rotation drive mechanism that is provided to commonly guide each narrow sheet divided by the slitter. A guide roller that is rotationally driven by the roller and a feed roller that is provided in parallel on the sheet traveling path of the narrow sheet from the guide roller to the touch roller for each of a front side and a rear side and that is driven by a feed roller via a continuously variable transmission mechanism. And a sorting roller rotatably driven by a mechanism. 2. A sheet split winding device according to claim 1, further comprising a gap type clutch capable of adjusting a transmission torque instead of the continuously variable transmission mechanism.