JPS5931240A - Method of winding for slitter - Google Patents

Abstract

PURPOSE:To accurately control the winding tension of plural winding rolls, by providing a common contact roll as a substantially idle roll when winding a sheet around the winding rolls while keeping the winding rolls in touch with the common contact roll. CONSTITUTION:After a sheet 1 is cut off to bands, they are wound around plural winding rolls 4 along a guide roll 2 and a contact roll 3, which is provided as a substantially idle roll and driven by the winding rolls pushing the surface of the contact roll. Driving torque is applied to the winding rolls 4 by electric motors 5. The output torque of each electric motor 5 is regulated by a controller 6. Since the driving torque of the motor 5 is regulated without receiving a disturbance due to the driving of the contact roll 3, the actual winding tension of the winding roll 4 is accurately controlled so that the quality of the winding roll is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding method for a slitter that winds a seamill-like material onto a plurality of take-up rolls while cutting it into strips, and particularly relates to a winding method for winding a seamill-like material onto a plurality of take-up rolls, and particularly relates to a winding method for winding a sea mill-like material onto a plurality of take-up rolls while cutting it into strips. The present invention relates to a method for winding a slitter in which winding is performed while the slitter is brought into contact with the winder.

When winding up a sheet-like material using a slitter, the surface of the winding roll is pressed by the roll while being rolled up.
It is well known that good quality winding rolls can be obtained. There are two ways to suppress the take-up rolls: one is to provide each take-up roll with its own suppression roll, and the other is to use a single full-width roll (
There is a method in which the entire take-up roll is pressed against the touch roll. Of these, the latter method has great advantages over the former method in that it is simpler in terms of equipment and the take-up width of the take-up roll can be easily changed, but on the other hand, it has the following problems.

In other words, in the conventional device, the touch roll was equipped with its own drive device, so the drive torque of the touch roll and the drive torque of the take-up roll that comes into contact with the touch roll are different from each other. interfere with each other through. As a result, the winding tension of the winding roll, which should originally be controlled to an appropriate value by controlling the drive torque, deviates greatly from the desired value that should be controlled due to interference from the touch roll.

Furthermore, due to the disturbance caused by the touch roll drive, it was not easy to detect the winding part horn of the actual sheet I-shaped object whose winding tension was controlled. Therefore, it is difficult to control the winding tension of the sheet-like material to a predetermined value, and it is also difficult to select the optimal winding section sawing conditions for the sheet-like material.

In order to solve the problems with conventional touch roll-driven slitter, the present invention makes it possible to easily recognize the actual winding tension of the winding roll and control the actual winding tension of the sheet material to an optimal value. The purpose is to make it possible to
It is an object of the present invention to provide a method for winding a slitter that meets this purpose.

In order to achieve this object, in the slitter winding method d3 of the present invention, a plurality of winding rolls are wound while being in contact with a common touch roll, and the touch roll is The roller has no driving device of its own and is a free roll, and is driven by contact from the surface with a take-up roll. By making the touch roll a free roll in this way, interference between the driving force of the touch roll and the driving force of the take-up roll as in the conventional case is removed, so the driving torque transmitted to the take-up roll is reduced. Only the force that generates the winding tension of the take-up roll and the force that drives the surface of the touch roll are used. Since the mechanical loss due to the rotation of the touch roll is almost constant, the force that drives the Tatsujiru is approximately constant, and the actual winding tension of the take-up roll is constant from the drive transmission torque to the take-up roll. It is easily understood by subtracting the components. Therefore, by simply controlling the drive transmission torque to the take-up roll, that is, the driving torque of the drive source of the take-up roll, it is possible to accurately control the winding tension of the take-up roll, and the desired purpose can be achieved. be done.

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 schematically show the configuration of a winding section of a sheet-like material slitter for carrying out a method according to an embodiment of the present invention. After the sheet-like material 1 is cut into strips at a cutting section (not shown), the sheet-like material 1 is passed through a guide roll 2, a touch roll 3, and then wound onto a plurality of take-up rolls 4. Of these, the guide roll 2 is driven by a drive source different from that of the winding section. Moreover, the touch roll 3 is installed as a substantially free roll. Substantially, a free roll is a roll to which a driving torque sufficient to drive the touch roll 3 itself is not applied, and it may be a roll that is completely rotatable, and the mechanical resistance due to the rotation of the roll is offset. It may also be a roll that is given a minute rotation l/ruk. That is, the touch roll is mainly driven by the surface drive from the take-up roll, and is in a state where it can always follow the take-up roll. Each take-up roll 4 is rotated by being applied with a driving force of 1h by an electric motor 5 provided as a drive source for each take-up roll 4 while being pressed against the touch roll 3. . Each electric motor 5 is connected to a control device 6, and the output torque thereof is controlled by the control device 6. Note that 7 is a drive transmission gear 1-.

Using an apparatus having such a composition, the method of the present invention is carried out as follows.

First, the winding tension of the entire width of the sheet-like material 1 will be explained.

The touch roll 3 is a free roll, and is surface-driven by all the winding rolls 4.

As a result, the driving force 1 to torque transmitted from each electric motor m5 to the winding roll 4 becomes the resultant force of the torque that generates the winding tension j in each winding roll 4 and the torque j to silk that drives the touch roll 3. Of this resultant force, the torque that drives the touch roll 3 is almost constant because mechanical loss due to rotational resistance of the touch roll 3 has almost no changing component and is almost constant. Therefore, by subtracting the constant component from the drive torque of the electric motor 5, the winding tension of the winding roll 4 can be easily determined. Therefore, electric motor 5
By controlling the driving torque of the winding roller, the actual winding tension of the winding roll can be accurately controlled without being affected by disturbances from the touch roll as in the conventional case.

In addition, by always applying a minute torque to the touch roll 3, the mechanical loss of the touch roll 3 can be made close to O. In this case, the drive torque control of the electric motor 5 itself is applied to the take-up roll. 4 winding tension control.

In addition, touch roll 3 is essentially a free roll,
By being rotated together with the take-up roll 4, the actual winding tension of the take-up roll 4 is applied to the sheet 1 just before the touch roll 3 to widen it without attenuation. Therefore, the tension of the sheet-like material 1 between the touch roll 3 just before the touch roll 3 and the guide roll 2 which is driven separately at a constant speed is substantially the same as that of the take-up tension saw.

The sheet tension between this touch roll 3 and guide roll 2
The relationship between and the drive torque of the electric eye 5 for driving the winding roll is as follows:
It is easily calibrated by static or dynamic testing. Therefore, by controlling the driving torque of the electric IJ 5 to a preset value, the winding tension of the winding roll 4 can also be precisely controlled.

Next, the winding tension saw of each winding roll 4 will be explained. As mentioned above, the winding tension of the entire width of the sheet 1 to the material 1 can be precisely controlled by controlling the drive 1 to torque of the electric motor 5, that is, by controlling the sum of the drive 1 to torque of each electric motor 5. be done. The total sum of the drive torques of each electric motor n5 is calculated by the control device @6. Since the winding tension of the entire width of the sheet material is controlled to a predetermined value, the individual output command to each electric all 5 of each winding roll 4 is simply the sum of the driving torques of each winding roll 4. Just by proportionally distributing the winding tension according to the width, a predetermined winding tension is outputted according to the width of each winding roll 4. As a result, the actual winding tension of each winding roll 4 is controlled to the optimum tension.

In the above-described embodiment, a method was described in which the take-up roll was driven by an electric motor, but any method may be used as long as the torque can be controlled, such as a hydraulic motor. Also, instead of pressing all the take-up rolls against one common touch roll, two touch rolls are provided as shown in Figures 3 and 4, in which a plurality of take-up rolls are in contact with each touch roll. may be adopted.

As described above, when using the slitter winding method of the present invention, the touch roll is substantially a free roll and the surface is driven by the winding roll, so that the disturbance caused by driving the touch roll as in the conventional method is avoided. The effect is that the actual winding tension can be precisely controlled simply by controlling the drive of the winding roll by one herk control.

In addition, it is possible to easily know the actual winding tension of the winding roll and to easily control it to the optimum winding tension condition.By controlling in this way, the quality of the winding roll can be improved. can be significantly improved.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a slitter winding section for carrying out a method according to an embodiment of the present invention, FIG. 2 is a side view of the apparatus shown in FIG. 1, and FIG. 3 is a diagram illustrating a method of the present invention. FIG. 4 is a side view of a slitter winding section according to another embodiment of the invention, and FIG. 4 is a plan view of the apparatus shown in FIG. 3. 1...Sheet-like material 2...Guide roll 3...Tatsuji roll 4...Take-up roll 5 ......Electric motor 6 as a drive source...
...Control device 7...Belt Fig. 1

Claims (3)

[Claims] (1) In a slitter winding method in which a sheet-like material is cut into strips while being wound onto a plurality of take-up rolls, and the plurality of take-up rolls are wound while being brought into contact with a common touch roll, the touch roll is substantially A method for winding up a slitter, in which the sheet-like material is wound onto a winding roll while the surface of the touch roll is driven by the winding roll. (2) Set a drive torque value determined in advance from the relationship with the tension so that the tension of the sheet material immediately before the touch roll becomes a predetermined tension, and set the drive torque of the take-up roll to the set value. A method for winding up a slitter according to claim 1, wherein the sheet material is wound up while being controlled so that (3) Each of the winding rolls is provided with a drive source that rotationally drives the winding roll, and the drive source of each winding roll is driven 1-
While controlling the total torque to a predetermined value, and controlling the drive torque of each drive source to a value that is distributed to each drive source in proportion to the width of each winding roll, A method for winding up a slitter according to claim 1, for winding up an object.