KR102634230B1 - Unwinder generative breaking system that does not require winding diameter setup - Google Patents

Abstract

In the present invention, the work object wound on an unwinder is unwound by the operation of a motor installed on one side of the rotation axis of the unwinder and wound on a rewinder, and is placed between the unwinder and the rewinder. It relates to an unwinder power generation braking system built to be interoperable with a roll-to-roll work system in which printing, coating, laminating, or forming work of a work object is performed by a converting device, installed between the unwinder and the converting device. The winding diameter of the unwinder based on the tension detection value detected by the tension detection module that detects the tension of the work object that is released from the unwinder and directed to the converting device and the tension setting value input and set by the operator. a diameter calculation unit that calculates; A torque limit calculation unit that calculates a torque limit based on the tension setting value input and set by the operator and the winding diameter calculation value calculated by the diameter calculation unit; a tension control unit that generates a motor tension control command signal for controlling the operating state of the motor based on the torque limit value calculated through the torque limit calculation unit; It includes an unwinding drive unit that receives a tension control command signal generated through the tension control unit and controls the operating state of the motor based on this.

Description

Unwinder power generation braking system that does not require winding diameter setting {UNWINDER GENERATIVE BREAKING SYSTEM THAT DOES NOT REQUIRE WINDING DIAMETER SETUP}

The present invention relates to an unwinder power generation braking system built in conjunction with a roll-to-roll work system consisting of an unwinder, a converting device, and a rewinder.

Roll-To-Roll work system or equipment is a converting device placed between the unwinder and the rewinder in the process in which the work object wound on the unwinder is unwound from the unwinder and wound on the rewinder. It has an environment where printing, coating, lamination, or forming of work objects is performed by the device.

Here, in relation to the control of specific operating states such as braking of the unwinder, the existing motor braking method uses motor power to generate regenerative braking, the air braking method uses brake pads to generate friction braking, and the friction force by flowing electricity to the powder. There is a powder control method that creates friction braking by adjusting .

Among these, when attempting to build an unwinder power generation braking system within a roll-to-roll work system through a motor braking method, the work object wound on the unwinder is gradually unwound and the unwinding diameter changes. In order to produce proper work results, the tension must be varied by controlling the rotational torque of the winder. In particular, it was inconvenient for the operator to input the winding diameter value every time the work object was changed.

In particular, in the case of electrical engineers, the unwinder power generation braking system was not commercialized in many cases, so not only did they have to design and use a program for each equipment in each system, but the difficulty of the work was not easy.

In relation to this, prior literature on the prior art related to unwinder control, which is designed to obtain excellent work results by optimally maintaining the tension of the work object regardless of work progress, includes "Roll-to-roll transfer control device" in Korean Patent Publication No. KR 10-1752116. "(hereinafter referred to as 'prior art').

However, in the case of existing unwinder power generation braking systems, including the prior art, high work difficulty was required because the operator still had to set the input value of the winding diameter individually for each case, and the winding status of the work object according to the progress of the work. There was a problem in that immediate and rapid control response to changes was not possible and the product defect rate could not be significantly reduced.

In addition, in the case of existing unwind power generation braking systems, including conventional technology, the incorporation of eco-friendly eco technology in energy use is not achieved, and excessive energy consumption is caused by the inefficient energy use of the roll-to-roll work system. There was a problem with environmental issues related to carbon emissions.

The present invention was created to solve the above problems, and the purpose of the present invention is to immediately respond to changes in the winding state of the work object without the need for a separate winding diameter setting when performing unwinding based on a tension control method using a motor. The goal is to provide an unwinder power generation braking system that not only enables efficient and quick control response, but also sufficiently reduces the difficulty of controlling the task.

In addition, another purpose of the present invention is to provide an unwinder power generation braking system that can expect environmentally friendly effects such as reducing carbon emissions by incorporating eco-technology related to renewable energy production in energy supply.

In order to achieve the wood cutting, the unwinder power generation braking system that does not require setting the winding diameter of the present invention is that the work object wound on the unwinder is installed on one side of the rotation axis of the unwinder and connected to the operation of the motor. A roll-to-roll work system in which the work object is unwound and wound on a rewinder, and printing, coating, laminating, or forming work is performed on the work object by a converting device disposed between the unwinder and the rewinder. In the unwinder power generation braking system constructed to be interoperable with, a tension detection module installed between the unwinder and the converting device to detect the tension of the work object released from the unwinder and heading toward the converting device. a diameter calculation unit that calculates the winding diameter of the unwinder based on the tension detection value detected by and the tension setting value input and set by the operator; A torque limit calculation unit that calculates a torque limit based on the tension setting value input and set by the operator and the winding diameter calculation value calculated by the diameter calculation unit; a tension control unit that generates a motor tension control command signal for controlling the operating state of the motor based on the torque limit value calculated through the torque limit calculation unit; An unwinding drive unit that receives a tension control command signal generated through the tension control unit and controls the operating state of the motor based on it; and a tension setting unit provided to enable generation of a setting signal on one side and transmission of the generated signal to the diameter calculation unit for input setting of the tension setting value by an operator.

Here, the diameter calculation unit receives the tension detection value detected by the tension detection module and the tension setting value input and set by the tension setting unit, and generates an error value representing the difference between the received tension setting value and the tension detection value. A PID control unit that generates a PID output value according to the error value using a preset PID (Proportional-Integral-Differential) control logic based on; An upper limiter value and a lower limiter value are preset, and a limiter unit determines a relative magnitude relationship between the preset upper limiter value and the lower limiter value of the PID output value generated and received from the PID control unit. An RFG (Ramp Function Generator) unit that calculates the winding diameter of the unwinder according to a preset logic according to the result determined through the limiter unit, wherein the RFG unit determines the result determined through the limiter unit as the PID output value. If it is greater than the upper limiter, the winding diameter calculated value is gradually increased according to a predetermined diameter change rate, and the RFG unit increases the winding diameter calculated value by a predetermined diameter change rate when the result determined through the limiter unit is smaller than the lower limiter. Accordingly, the calculated winding diameter value is gradually reduced.

In addition, the diameter calculation unit further includes a liner unit that receives the winding diameter calculation value calculated by the RFG unit and adjusts the diameter change rate based on the provided winding diameter calculation value, As the winding diameter calculation value calculated by the RFG unit increases according to a preset diameter change rate control logic, the liner unit lowers the diameter change rate and provides the setting to the RFG unit, and the liner unit adjusts the RFG unit according to a preset diameter change rate control logic. As the winding diameter calculation value calculated by the unit decreases, the diameter change rate is increased and provided to the RFG unit.

In addition, the torque limit calculation unit receives the winding diameter calculation value calculated by the RFG unit and the tension setting value input and set by the tension setting unit, and a radius value corresponding to half of the received winding diameter calculation value. a first torque limit calculation unit that calculates a basic torque value by multiplying the tension setting value; and a second torque limit calculation unit that calculates a torque limit value by adding the PID output value generated and provided from the PID control unit to the basic torque value calculated through the first torque limit calculation unit.

And the unwinder power generation braking system, which does not require setting the winding diameter, is produced in the process of controlling the power generation braking form of the motor installed and connected to one side of the rotation axis of the unwinder by the unwinding drive unit through torque control. It further includes a renewable energy management unit capable of receiving and storing electrical energy, and providing output of the stored electrical energy as operating power to an electrically connected power supply target.

According to the present invention, the following effects are achieved.

First, it is possible to construct an unwinder power generation braking system that can perform tension adjustment through torque control of the motor connected to the unwinder without the need for a separate winding diameter setting.

Second, it provides simpler and easier work and design difficulty by not requiring electrical engineers to change mechanical settings according to changes in work objects or operating pressure conditions, and can enhance the convenience of use.

Third, the responsiveness of the control method is very excellent in response to changes in work status, so it can be expected to increase productivity and minimize the defect rate of work results.

Fourth, by simultaneously producing renewable energy in the process of performing unwinder power generation braking and using it internally or externally to the system, it can increase energy efficiency and provide environmentally friendly benefits such as reduction of carbon emissions.

Figure 1 is a configuration diagram for explaining a roll-to-roll work system linked to the unwinder power generation braking system that does not require setting the winding diameter of the present invention.
Figure 2 is a circuit diagram showing the configuration and connection relationship between the components of the unwinder power generation braking system that does not require setting the winding diameter according to the present invention.
Figure 3 is a circuit diagram showing the detailed configuration and connection relationship between the diameter calculation unit and the torque limit calculation unit in the unwinder power generation braking system that does not require setting the winding diameter according to the present invention.

Preferred embodiments of the present invention will be described in more detail with reference to the attached drawings, but already well-known technical parts will be omitted or compressed for brevity of explanation.

<Description of the unwinder power generation braking system that does not require winding diameter setting>

Referring to Figure 1, the unwinder power generation braking system 100 that does not require setting the winding diameter of the present invention is such that the work object (W) wound on the unwinder (11) is the unwinder (11). It is unwound by the operation of the motor (11M) installed on one side of the rotating shaft and wound around the rewinder (13), and is worked on by the converting device (12) disposed between the unwinder (11) and the rewinder (13). It relates to a system built to be interoperable with a roll-to-roll work system (10) in which (W) printing, coating, laminating, or forming operations are performed.

In summary, the roll-to-roll work system 10 allows the work object (W) wound on the unwinder 11 to be unwound by the operation of the unwinder 11 and transferred to the converting device 12. It is a work system designed to be rewound by the operation of the rewinder (13) after undergoing separate operations such as printing, coating, laminating, or forming, and a separate unwinder power generation braking system (100) is added inside. A relationship is established and interconnected.

To this end, the unwinder power generation braking system 100 of the present invention, which does not require setting the winding diameter, includes a diameter calculation unit 110; Torque limit calculation unit 120; Tension control unit 130; Unwinding drive unit (140); Speed setting unit 150; Tension setting unit 160; Information output unit 170; and a renewable energy management unit 180.

The diameter calculation unit 110 is installed between the unwinder 11 and the converting device 12 and detects the tension of the work object (W) released from the unwinder 11 and heading to the converting device 12. Calculate the winding diameter of the unwinder (11) based on the tension detection value detected by the tension detection module (11R) and the tension setting value input and set by the operator to generate calculation information about the calculated winding diameter value. do.

Here, the tension detection module 11R is a sensing means such as a load cell, and can check the actual tension of the work object W heading from the unwinder 11 to the converting device 12.

In addition, the tension setting unit 160, which is provided to perform the process of inputting and setting the tension setting value by the operator, is built into the entire system as a signal input module and performs the input action by the operator pressing or touching a button. It corresponds to a touch screen-like configuration that allows a signal to be generated when touched.

Specifically, the tension setting unit 160 is electrically connected to enable generation of a setting signal on one side and transmission of the generated signal to the diameter calculation unit 110 for input setting of the tension setting value by the operator. do.

In addition, depending on the implementation, the tension setting unit 160 is electrically connected to various components in the unwinder power generation braking system 100 through wireless or wired, so that signal generation and signal transmission can be performed in various ways. You can.

To implement this type of operation, the diameter calculation unit 110 includes a PID control unit 111, a limiter unit 112, an RFG unit 113, and a liner unit 114.

First, the PID control unit 111 receives the tension detection value detected by the tension detection module and the tension setting value input and set by the tension setting unit through the error value calculation unit 111A, and detects the received tension setting value and tension. Calculates an error value representing the difference between values.

As a result, the result calculated through the error value calculation part 111A in the PID control unit 111 corresponds to the result of 'tension set value - tension detection value'.

In addition, the PID control unit 111 uses a preset PID (Proportional-Integral-Differential) control logic based on the error value calculated by the error value calculation unit 111A through the PID control unit 111B to detect the error. The PID output value is generated according to the value.

Here, the PID control algorithm preset in the PID control part 111B is directly proportional to the level of the error value calculated by the error value calculation part 111A, as shown in FIG. 3, and the relationship between the corresponding PID output values is different. is defined.

Accordingly, the PID control unit 111B outputs and generates different PID output values for each error value calculated by the error value calculation unit 111A based on the logic corresponding to the PID control algorithm.

Next, the limiter unit 112 has preset upper limiter values and lower limiter values, and determines the relative size relationship between the preset upper limiter value and lower limiter value of the PID output value generated and received from the PID control unit 111. judge.

Specifically, the limiter unit 112 determines whether the PID output value generated and received from the PID control unit 111 is relatively large, exceeding the preset upper limiter value, and whether it is relatively small and less than the preset lower limiter value. I do it.

If the PID output value generated and provided from the PID control unit 111 is greater than the upper limiter value, 'LUR=1' is defined to generate information about the judgment result, and the PID generated and provided from the PID control unit 111 If the output value is less than the lower limiter value, 'LLR=1' is defined to generate information about the judgment result.

Here, LUR is an abbreviation for 'Limit Upper Reached', meaning the upper limit value that is preset to be activated when the upper limit setting value is exceeded, and LLR is an abbreviation for 'Limit Lower Reached', which is a preset value to be activated when it falls below the lower limit setting value. The lower limit value is already set.

Next, the RFG (Ramp Function Generator) unit 113 calculates the winding diameter of the unwinder 11 according to a preset logic according to the result determined by the limiter unit 112.

Specifically, when the result determined through the limiter unit 112 indicates that the PID output value is greater than the upper limiter and the information regarding the judgment result indicates 'LUR=1', the winding diameter is gradually calculated according to a predetermined diameter change rate. The value can be increased by 'UP_Time' as shown in Figure 3.

In addition, when the result determined through the limiter unit 112 indicates that the PID output value is smaller than the lower limiter and the information about the judgment result indicates 'LLR = 1', the winding diameter calculated value is gradually calculated according to a predetermined diameter change rate. can be reduced by 'Down_Time' as shown in Figure 3.

Finally, the liner unit 114 receives the winding diameter calculation value calculated by the RFG (Ramp Function Generator) unit 113 and adjusts the diameter change rate based on the provided winding diameter calculation value.

Specifically, as shown in FIG. 3, the liner unit 114 lowers the diameter change rate as the winding diameter calculation value calculated by the RFG unit 113 increases according to the preset diameter change rate control logic, thereby increasing the winding diameter change rate in the RFG unit 113. Settings are provided so that the winding diameter calculation value can change slowly.

In addition, as shown in FIG. 3, the liner unit 114 increases the diameter change rate as the winding diameter calculated by the RFG unit 113 decreases according to the preset diameter change rate control logic to increase the diameter change rate to the RFG unit 113. Settings are provided so that changes in the winding diameter calculation value can occur more quickly.

The torque limit calculation unit 120 calculates the torque limit based on the tension setting value input and set by the operator through the tension setting unit 160 and the winding diameter calculation value calculated by the diameter calculation unit 110. do.

For this purpose, the torque limit calculation unit 120 includes a first torque limit calculation unit 121 and a second torque limit calculation unit 122.

Here, the first torque limit calculation unit 121 receives the winding diameter calculation value calculated by the RFG unit 113 and the tension setting value input and set by the tension setting unit 160, and the received winding diameter calculation value The basic torque value is calculated by multiplying the radius value corresponding to half of by the tension setting value.

More specifically, the result of the basic torque value can be defined as '{(winding diameter calculated valueㅧ0.5)ㅧtension setting value}ㆇGear Ratio(1, 1:1)' as shown in Figure 3.

Depending on the implementation, the tension setup unit 125 may be provided separately so that the tension setting value can be provided after creating a setting from an independent separate configuration, but most preferably, it is performed through the tension setup unit 160.

Next, the second torque limit calculation unit 122 calculates the torque limit value by adding the PID output value generated and received from the PID control unit 111 to the basic torque value calculated through the first torque limit calculation unit 121.

The tension control unit 130 is configured to generate a motor tension control command signal for controlling the operating state of the motor 11M based on the torque limit value calculated through the torque limit calculation unit 120, and performs torque preprocessing of the motor 11M. Control and torque limiting are practically performed.

The unwinding drive unit 140 receives the tension control command signal generated through the tension control unit 130 and controls the operating state of the motor 11M based on this, so that torque control-based power generation braking can be practically performed. do.

To this end, the unwinding drive unit 140 not only receives the current rotation speed value according to the operating state of the motor 11M, but also receives the current rotation speed value by the unwinding operation of the motor 11M through the speed setting unit 150. It includes a speed control part 141 that performs speed control by receiving a speed setting signal set by examining the rotation speed.

In addition, the unwinding drive unit 140 sums the torque value based on the speed control signal through the speed control unit 141 and the torque value received through the torque precontrol torque of the tension control unit 130. It also includes a torque summing part 142 and a torque limiting part 143 that performs torque limiting based on a torque limit value for the summed result value of the torque summing part 142.

Furthermore, the unwinding drive unit 140 includes a current control unit 144 equipped with logic to perform a current control loop in comparison to the torque value obtained as a result of torque limiting, and thereby rotates. It includes a commutator portion (145) connected so that the torque can be adjusted differently.

The information output unit 170 provides information on whether each component of the unwinder power generation braking system 100, including the roll-to-roll work system 10, is operating normally, and information produced through the renewable energy management unit 180, which will be described below. It corresponds to a separate output module such as a display that outputs information related to various system operations, such as information related to renewable energy storage and usage history, to workers so that they can visually recognize it.

The renewable energy management unit 180 is an electrical energy produced in the process of controlling the power generation braking form of the motor 11M installed on one side of the rotation axis of the unwinder 11 by the unwinding drive unit 140 through torque control. Received the message and congratulated it.

For this purpose, the renewable energy management unit 180 includes a separate inverter configuration and is provided to output the stored electric energy as an operating power to a specific electrically connected power supply target, most preferably the motor 11M. It can be used for operation or for the operation of other configurations related to the roll-to-roll work system 10, thereby sufficiently enhancing energy saving and efficiency and providing sufficient carbon emission reduction effects, thereby also providing environmental benefits.

The embodiments disclosed in the present invention are not intended to limit but illustrate the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these examples. The scope of protection should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

10: Roll-to-roll work system
11: unwinder 12: converting device
13: Rewinder W: Work object
100: Unwinder power generation braking system
11R: Tension detection module 11M: Motor
110: diameter calculation unit
111: PID control unit
111A: Error value calculation part 111B: PID control part
112: limiter unit 113: RFG unit
114: Liner part
120: Torque limit calculation unit
121: first torque limit calculation unit 122: second torque limit calculation unit
125: Tension setup unit
130: Tension control unit
140: Unwinding drive unit
141: Speed control part 142: Torque summation part
143: Torque limit part 144: Current control part
145: Commutator part
150: Speed setting unit 160: Tension setting unit
170: Information output unit 180: Renewable energy management unit

Claims (5)

A work object wound on an unwinder is unwound by the operation of a motor installed on one side of the rotation axis of the unwinder and wound on a rewinder, and a converting device disposed between the unwinder and the rewinder. In the unwinder power generation braking system built to be linked to a roll-to-roll work system in which printing, coating, laminating, or forming work of the work object is performed,
A tension detection value detected by a tension detection module installed between the unwinder and the converting device to detect the tension of the work object unwinding from the unwinder and heading to the converting device and a tension setting input by the operator. a diameter calculation unit that calculates the winding diameter of the unwinder based on the value;
A torque limit calculation unit that calculates a torque limit based on the tension setting value input and set by the operator and the winding diameter calculation value calculated by the diameter calculation unit;
a tension control unit that generates a motor tension control command signal for controlling the operating state of the motor based on the torque limit value calculated through the torque limit calculation unit;
An unwinding drive unit that receives a tension control command signal generated through the tension control unit and controls the operating state of the motor based on it; and
It includes a tension setting unit provided to generate a setting signal on one side and transmit the generated signal to the diameter calculation unit for input setting of the tension setting value by an operator,
The diameter calculation unit is,
The tension detection value detected by the tension detection module and the tension setting value input by the tension setting unit are received, and a preset PID is generated based on an error value indicating the difference between the received tension setting value and the tension detection value. , Proportional-Integral-Differential) control logic to generate a PID output value according to the error value;
An upper limiter value and a lower limiter value are preset, and a limiter unit determines a relative size relationship between the preset upper limiter value and the lower limiter value of the PID output value generated and received from the PID control unit.
It includes an RFG (Ramp Function Generator) unit that calculates the winding diameter of the unwinder according to a preset logic according to the result determined through the limiter unit,
If the result determined by the limiter unit is that the PID output value is greater than the upper limiter, the RFG unit gradually increases the calculated winding diameter value according to a predetermined diameter change rate,
The RFG unit is characterized in that when the result determined by the limiter unit is that the PID output value is smaller than the lower limiter, the winding diameter calculation value gradually calculated according to a predetermined diameter change rate is reduced.
Unwinder power generation braking system that does not require winding diameter setting.
delete According to paragraph 1,
The diameter calculation unit is,
It further includes a liner unit that receives the winding diameter calculation value calculated by the RFG unit and adjusts the diameter change rate based on the provided winding diameter calculation value,
The liner unit provides the setting to the RFG unit by lowering the diameter change rate as the winding diameter calculation value calculated by the RFG unit increases according to a preset diameter change rate control logic,
The liner unit increases the diameter change rate as the winding diameter calculation value calculated by the RFG unit decreases according to a preset diameter change rate control logic, and provides a setting to the RFG unit.
Unwinder power generation braking system that does not require winding diameter setting.
According to paragraph 1,
The torque limit calculation unit is,
Receives the winding diameter calculation value calculated by the RFG unit and the tension setting value inputted by the tension setting unit, and multiplies the radius value corresponding to half of the received winding diameter calculation value by the tension setting value to obtain basic torque. a first torque limit calculator that calculates a value; and
A second torque limit calculation unit that calculates a torque limit value by adding the PID output value generated and received from the PID control unit to the basic torque value calculated through the first torque limit calculation unit.
Unwinder power generation braking system that does not require winding diameter setting.
According to paragraph 1,
The unwinder power generation braking system that does not require the winding diameter setting,
The unwinding drive unit transmits and stores electrical energy produced in the process of controlling the power generation braking form of the motor installed and connected to one side of the rotating shaft of the unwinder through torque control, and stores the stored electrical energy electrically. Characterized in that it further includes a renewable energy management unit capable of providing output as operating power to a connected power supply target.
Unwinder power generation braking system that does not require winding diameter setting.