JP2002128349A - Tension setting method of unwinding/winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and rapidly set an initial tension condition in the unwinding/ winding machine, and to facilitate reproduction of conditioning with same material. SOLUTION: Tension setting information of an analog signal produced by a volume operation of rotation operating pieces 11a, 13a, and 14a is converted to a digital signal and inputted into a tension calculating part 16, one of the tension setting information inputted into the tension calculating part 16 and tension setting information stored on a memory 18 is converted to an analog signal from the tension calculating part 16 and outputted to a unwinding tension control means 8 and a winding tension control means 10, and the tension setting information in the tension calculating part 16 is corresponded by web and stored in the memory 18 inputably/outputably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension setting method for an unwinder / winder.

[0002]

2. Description of the Related Art Conventionally, a web such as a plastic film is unwound from an unwinder of a raw roll, and a work process (for example,
After a process of slitting a wide web into a narrow web or a work process such as a web inspection process, an unwinding / winding machine that winds the product roll on a winder is widely used. FIG. 3 schematically shows an example of the unwinder / winder 1, in which a tension detecting roller 4 and a tension detecting roller 4 are provided between a material roll A rotated by a drive motor 2 and a product roll B rotated by a drive motor 3. The running speed of the web is set by an electric motor 6 that rotates the pinch roller 5 with the pinch roller 5 interposed. Further, there is provided a tension controller 7 for adjusting the unwinding tension of the raw roll A and the winding tension of the product roll B. First, as for the unwinding tension, the web tension detected by the tension detecting roller 4 is fed back to the unwinding tension control means 8 for controlling the tension by rotating the drive motor 2 in the tension control unit 7 and is transmitted to the drive motor 2 side. It is adjusted by adding the unwind brake. The winding tension is controlled by the winding tension control means 10 in the tension control unit 7 by controlling the shaft torque of the winding shaft 9 of the product roll B (for example, the shaft torque is adjusted by adjusting the air pressure using the winding shaft 9 as an air friction shaft). Control) and the rotation of the drive motor 3 of the winding shaft 9 is adjusted. At this time, in order to improve the winding appearance of the product roll, it is possible to set so that winding based on so-called taper tension is performed, in which the winding tension is attenuated according to the winding diameter of the winding roll. The winding tension control means 1 in the tension control unit 7 is generally
A taper tension ratio can be input for 0.

Conventionally, as the tension setting method for the unwinding / winding machine having the above-described configuration, the unwinding tension, the winding tension, the taper tension ratio, etc. are set by analog input using a volume or a screen display. It was done by the method of inputting a numerical value. The analog input by the volume operation is an operation of changing the amount of current to generate tension setting information of an analog signal, and the analog signal is amplified and transmitted to each operation unit. Numerical input is an operation for generating tension setting information of a digital signal, and the digital signal is converted into an analog signal and amplified and transmitted to each operating section.

In the analog input system, as shown in FIG. 3, an unwinding tension setting unit 11 for controlling a volume connected to an unwinding tension control means 8 in a tension control unit 7 and a drive motor for the pinch roller 5 are used. 6 and a web operation speed setting unit 12 for volume operation for setting rotation of the drive motor 3 for the product roll B, and a winding tension setting unit 1 connected to the winding tension control means 10 for volume operation.
3. Adopted in an unwinder / winder equipped with a taper tension ratio setting unit 14. By the way, when unwinding and winding different winding products without taking over the production conditions of the previous winding product, the initial tension setting needs to be corrected due to differences in materials and slight variations in thickness etc. It is. In the analog input type unwinding / winding machine, the operator often sets the tension while controlling the volume at each of the setting units as if by touching the web tension during winding by hand. Thus, when the production time is short, conditions can be quickly set, and this is a practical method. However, this analog input method has a drawback in that, even if another day, after the production under different conditions, it is attempted to set the same conditions as in the previous production, the reproduction is difficult and requires a lot of time.

On the other hand, in the numerical value input method using a screen display, as shown in FIG. 4, the rotation status of each of the unwinding roll A, the pinch roller 5, and the product roll B is fed back to the tension control unit 7 and input. Is connected to the tension controller 7 and is displayed on the display 15 such as an unwinding tension setting screen a, a winding tension setting screen b, and a taper tension rate setting screen c. It is employed in an unwinder / winder equipped with a system for setting various conditions while switching input screens. Information input on each screen is input to each control unit in the tension control unit 7 as setting information. become. This type of unwinding / winding machine has the advantage that by storing the optimum conditions in memory, even if the operator changes, if a product is specified, the optimum condition values can be managed by calling numerical values. Thus, the conditions can be corrected and further adjusted to the optimum conditions. However, as described above, when setting the initial conditions when unwinding and winding a wound product different from the previous wound product, the operation of key inputting a numerical value is more than the analog input method using the volume. In addition, it is difficult to monitor the web tension during the input by inputting the key while looking at the input screen. There are drawbacks such as the end of production.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to easily and quickly set an initial tension condition in an unwinding / winding machine. It is another object of the present invention to provide a method for setting the tension of an unwinding / winding machine in which reproducibility of condition determination using the same material can be easily performed.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has a web traveling process of winding a web unwound from an unwinding roll through a work process onto a product roll. In the unwinding / winding machine provided so that the winding tension of the product roll can be changed by the tension control unit that sets the setting information and controls the tension, the rotation operation amount of the rotary operation element provided in the tension setting unit is controlled. The tension setting information of the digital signal set in response to the tension setting information is input to the tension calculation unit, and the tension calculation unit converts the tension setting information into an analog signal and outputs the analog signal to the tension control unit. A method for setting the tension of an unwinding / winding machine, characterized in that the above-mentioned problem is solved.

In the present invention, the rotary operation element of the tension setting section is for performing a volume operation, and the tension setting section is configured to generate an analog signal corresponding to the rotation operation amount of the volume operation of the rotary operation element. The tension setting information of the signal may be converted into the tension setting information of the digital signal and then input to the tension calculator. Further, in the present invention, the rotary operation element of the tension setting section operates an encoder, and the tension setting section sets a tension setting of a digital signal generated according to a rotation operation amount by an encoder operation of the rotation operation element. Information may be input to the tension calculator.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the embodiments shown in FIGS. In addition, the same reference numerals are given to portions having the same configuration as the conventional example, and the description thereof will be omitted. In the present invention, as shown in FIG. 1, an unwinding tension control means 8 for sending out an analog signal to adjust the unwinding tension by changing the number of revolutions of the drive motor 2 and sending out an analog signal to control the drive motor 3 A tension control unit 7 including a winding tension control unit 10 that adjusts a winding tension based on a difference between rotation and shaft torque.
, A tension calculator 1 composed of a microcomputer
6 are connected. Further, the tension calculator 16 includes:
An unwinding tension setting unit 11 for performing a volume operation, a winding tension setting unit 13 for performing a volume operation, and a taper tension rate setting unit 14 for performing a volume operation are connected. Each of the unwinding tension setting unit 11, the winding tension setting unit 13, and the taper tension rate setting unit 14 includes rotary operators 11a, 13
a, 14a, and these rotary operators 11a, 13
The tension setting information of the digital signal is output to the tension calculation unit 16 in accordance with the amount of rotation operation of the a and 14a. Particularly in the example shown in FIG.
Rotary operators 11a, 13a, and 14a, which are dials of the setting units 11, 13, and 14, perform volume control, and generate tension information of analog signals corresponding to the rotational operation amounts of the rotary operators. Like that. Further, each of the setting units 11, 13, and 14 has an analog / digital converter 17, and the rotary operators 11a, 13a, 1
4a, the tension setting information of the analog signal generated according to the rotation operation amount is converted into an analog signal.
The digital converter 17 is provided so as to convert the digital signal into tension setting information. As described above, the unwinding tension setting section 11, the winding tension setting section 13, and the taper tension rate setting section 14 output the tension setting information of the digital signal. In the tension calculator 16, the digital signal input as described above is converted into an analog signal by the digital / analog converter 20, and the unwinding tension control means 8 of the tension controller 7 and the winding tension are used. It is provided so that it can be transmitted to the control means 10.

A memory 18 is connected to the tension calculator 16 so that data can be input and output. The memory 18 stores digital information input to the tension calculator 16. The display device 19 is connected.
Then, it is provided so that required digital information is displayed on the display device 19 at the time of the next operation, and can be output to the tension calculator 16.

In the present invention, when the initial conditions for winding and unwinding the web are set, the unwinding tension setting unit 11 is used.
By operating the rotary operators 11a, 13a, and 14a in the winding tension setting unit 13 and the taper tension ratio setting unit 14 as described above, the tension setting information of the analog signal generated by the volume operation (winding travel time). Force setting information,
The winding tension setting information and the taper tension rate setting information) are converted into digital signals by an analog / digital converter 17 and input to the tension calculating unit 16. The tension setting information as a digital signal input to the tension calculator 16 is converted into tension setting information of an analog signal by the digital / analog converter 20, and the tension setting information corresponds to the unwinding tension control means 8, The web is sent to the winding tension control means 10, and under the control of these control means 10, the initial running of the web is performed with the unwinding tension, the winding tension, and the taper tension ratio changing. Thus, each setting unit 11, 1
Since the volume operation is performed in 3 and 14, the tension can be adjusted while touching the running web.

When the above conditions are adjusted and the optimum conditions of the unwinding tension, the winding tension, and the taper tension ratio are determined, the tension setting information of the digital signal in the tension calculating section 16 is unrolled and wound. The data is stored in the memory 18 in a state of being associated with the web being taken. The storage in the memory 18 in a state where the optimum conditions are determined is usually performed at the end of the operation. In this way, when the next web is unwound and wound again and then unwound and wound again under the same conditions as the previous web, the web stored in the memory 18 If the user selects and designates on the display device 19 in which the conditions up to the above are displayed, the designated conditions, that is, the tension setting information of the unwinding tension, the winding tension, and the taper tension ratio are stored in the memory 18. It is output to the tension calculator 16. Next, on the basis of the specified and output tension setting information, tension setting information (unwinding tension setting information, winding tension setting information) of an analog signal formed by a new volume operation (operation for fine adjustment) is performed. , Taper tension rate setting information)
Is converted into a digital signal by the analog / digital converter 17 and is added to the tension calculating section 16 to correct the tension setting information based on the reference. And
The corrected tension setting information is sent to the tension control unit 7 via the digital / analog converter 20 so that the web can be unwound and wound under appropriate conditions. is there.

In the embodiment shown in FIG. 2, the products whose production results are mainly related to the equipment to be produced, and when the production is to be performed by reproducing the previously obtained optimum conditions, If the optimal condition stored in the memory 18 is selected and designated on the display device 19, the tension setting information of the set unwinding tension, winding tension, and taper tension ratio is displayed. Tension calculator 1 from memory 18
6 is provided. In the same manner as in the embodiment shown in FIG. 1, the unwinding tension setting unit 11 and the winding tension are applied to the tension calculating unit 16 configured to input the tension setting information from the memory 18. Setting unit 1
3 and the taper tension rate setting unit 14 are connected. In the embodiment shown in FIG. 2, the unwinding tension setting unit 11, the winding tension setting unit 13, and the taper tension ratio setting unit 14
Rotary operator 11 that operates an encoder for each of
b, 13b, 14b, and the rotary operator 11b,
Tension setting information as a digital signal is generated corresponding to the rotation operation amounts of 13b and 14b. Therefore, each setting unit is not provided with an analog / digital converter as in the example shown in FIG.

Next, on the basis of the tension setting information specified and output, the rotating operation unit 1 of the unwinding tension setting unit 11, the winding tension setting unit 13, and the taper tension ratio setting unit 14 is set.
By operating encoders 1b, 13b and 14b,
Tension setting information (unwinding tension setting information, winding tension setting information, taper tension rate setting information) based on a digital signal corresponding to the rotation operation amount is added, and the reference tension setting information is corrected, The above digital / analog converter 2
The web is transmitted to the tension control unit 7 through the line 0 to unwind and wind the web under appropriate conditions.

[0015]

As described above, according to the tension setting method of the unwinding / winding machine of the present invention, the web traveling process of winding the web unwound from the unwinding roll into the product roll through the working process. In the unwinding / winding machine provided so that the winding tension of the product roll can be changed by a tension control unit that sets tension setting information and controls the tension, a rotary operation unit provided in the tension setting unit is provided. The tension setting information of the digital signal set according to the amount of rotation operation is input to the tension calculating unit, and the tension calculating unit converts the tension setting information into an analog signal and outputs the analog signal to the tension control unit. It is characterized in that setting information is stored in a memory so as to be able to input and output. Thus, the first condition setting of the web tension is performed. Since the volume operation is performed in the unwinding tension setting section, the winding tension setting section, and the taper tension rate setting section, the tension can be adjusted while touching the running web, and quick setting of the conditions can be performed. In addition, since the tension conditions are stored, unwinding the same web,
This provides an effect of excellent practicality, such that the winding can be performed under the same conditions without requiring any trouble.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of a configuration for performing a volume operation in a tension setting method for an unwinder / winder according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a configuration for performing an encoder operation in the present invention.

FIG. 3 is an explanatory diagram showing a conventional example of an analog input method.

FIG. 4 is an explanatory diagram showing a conventional example of a numerical value input method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unwinding / winding machine 7 ... Tension control part 8 ... Unwinding tension control means 10 ... Winding tension control means 11 ... Unwinding tension setting part 11a ... Rotary operation element 11b ... Rotation operation element 12 ... Web traveling speed setting Unit 13: Winding tension setting unit 13a: Rotating operator 13b: Rotating operator 14: Taper tension rate setting unit 14a: Rotating operator 14b: Rotating operator 16: Tension calculator 18: Memory

Claims (3)

[Claims] The present invention has a web traveling process for winding a web unwound from an unwinding roll through a work process onto a product roll, and a tension control unit for setting tension setting information and controlling the tension to wind the product roll. In an unwinder / winder with a variable take-up tension, the tension setting information of the digital signal set according to the amount of rotation of the rotary operator provided in the tension setting section is input to the tension calculation section. Wherein the tension calculating section converts the tension setting section into an analog signal, outputs the analog signal to the tension control section, and stores the tension setting information converted into a digital signal in a memory so as to be capable of inputting and outputting. Machine tension setting method. 2. A rotary operation device of the tension setting section for performing a volume operation, wherein the tension setting section controls a tension setting of an analog signal generated in accordance with a rotation operation amount by a volume operation of the rotation operation section. 2. The tension setting method for an unwinder / winder according to claim 1, wherein the information is converted into tension setting information of a digital signal and then input to the tension calculator. 3. The rotary operation element of the tension setting section is operated by an encoder, and the tension setting section controls the tension setting information of a digital signal generated according to the amount of rotation operation by the encoder operation of the rotary operation element. The tension setting method for the unwinder / winder according to claim 1, wherein the tension is input to the tension calculator.