WO2006035861A1 - ロールコータの自動運転制御装置および自動運転制御方法 - Google Patents
ロールコータの自動運転制御装置および自動運転制御方法 Download PDFInfo
- Publication number
- WO2006035861A1 WO2006035861A1 PCT/JP2005/017932 JP2005017932W WO2006035861A1 WO 2006035861 A1 WO2006035861 A1 WO 2006035861A1 JP 2005017932 W JP2005017932 W JP 2005017932W WO 2006035861 A1 WO2006035861 A1 WO 2006035861A1
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- WO
- WIPO (PCT)
- Prior art keywords
- roll
- operation control
- film thickness
- nip pressure
- control value
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
- B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
- B05C11/1023—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target responsive to velocity of target, e.g. to web advancement rate
Definitions
- the present invention relates to an automatic operation control device and an automatic operation control method for a roll coater capable of performing coating with a target film thickness accurately by automatic control.
- the roll coater 1 includes a back-up roll 3 that receives and feeds the sheet material 2 to be conveyed, a pick-up roll 5 that is immersed in the paint pan 4 and has paint attached thereto, and a pick-up roll 5.
- a transfer roll 6 to which the paint is delivered and an applicator roll 7 that receives the paint from the transfer roll 6 and applies the paint to the sheet material 2 between the knock-up roll 3 are arranged side by side.
- the knock-up roll 3 is rotatably supported by a frame 8 fixed at a fixed position.
- the applicator roll 7 is connected to a first cradle 11a capable of moving forward and backward by a force on the backup roll 3 via a slide rail 10a on a lower table 9 fixed at a fixed position. It is opposed and supported rotatably.
- the first cradle 11a that supports the applicator roll 7 is driven individually by the two first forward / reverse drive devices 12a supported by the lower table 9 at the left and right positions along the axial direction of the applicator roll 7. It is getting to be done.
- the first forward / reverse drive device 12a includes, for example, a stepping motor 13 that is rotationally driven, and a ball screw mechanism 14 that converts the rotational motion of the stepping motor 13 into a linear motion and outputs the linear motion.
- 15a is connected to the first cradle 11a.
- the drive shaft 15a is provided with a first port cell 16a for detecting the top pressure of the applicator roll 7.
- the first load cell 16a includes an applicator that is in pressure contact with the sheet material 2 that has passed through the backup roll 3 by advancing the first cradle 11a toward the backup roll 3 by the first forward / reverse drive device 12a. Detect pressure of roll 7 and use this as -p pressure signal Output to the first controller CI.
- the first controller CI drives the first forward / reverse drive device 12a on the basis of the input two-up pressure signal to adjust the up-pressure of the applicator roll 7.
- the applicator roll 7 is connected to a first rotation driving device 17a that rotationally drives the applicator roll 7.
- the rotation speed of the applicator roll 7 is detected as a rotation speed signal by a rotation speed detector 18a provided in the first rotation driving device 17a, and this rotation speed signal is output to the second control device C2.
- the second control device C2 converts the input rotation speed signal into an applicator roll surface speed based on the applicator roll diameter, and based on the applicator roll surface speed, the first rotation driving device 17a applies the applicator roll.
- the rotation drive of roll 7 is controlled.
- the transfer roll 6 and the pick-up roll 5 are also installed in substantially the same manner as the applicator roll 7, and are subjected to -p pressure control and rotation control. That is, the transfer roll 6 is moved to the second cradle l ib that can be moved forward and backward on the first cradle 11a via the slide rail 10b on the first cradle 11a, and the pickup roll 5 is On the cradle l ib, the third cradle 1 lc that can move forward and backward toward the transfer roll 6 via the slide rail 10c is opposed to the applicator roll 7 and the transfer roll 6 and is rotatably supported. Yes.
- the third cradle 11c is also provided with a paint pan 4.
- the second cradle l ib and the third cradle 1 lc are also supported by the two second forward / reverse drive units 12b and the third front / rear supported at the left and right positions of the first cradle 1 la and the second cradle 1 lb, respectively.
- the left and right are driven individually by the advance drive unit 12c! /
- the second load cell that detects the respective top pressures of the transfer roll 6 and the pickup roll 5 is provided on each of the drive shafts 15b and 15c of the second forward and backward drive device 12b and the third forward and backward drive device 12c.
- 16b and a third load cell 16c are provided, which respectively detect the pressure of the transfer roll 6 against the applicator roll 7 and the pressure of the pickup roll 5 against the transfer roll 6 and detect them as a nip pressure signal in the first controller C1.
- the first control device C1 drives the second and third forward / reverse drive devices 12b and 12c based on the inputted -up pressure signal, and the up-pressures of the transfer roll 6 and the pick-up roll 5 are driven. You will be able to adjust each individually.
- the transfer roll 6 is driven to rotate by the second rotation drive device 17b, and the pickup roll 5 is driven to rotate by the third rotation drive device 17c.
- the rotation speeds of the transfer roll 6 and the pick-up roll 5 are the second rotation drive device.
- the second rotation speed detector 18b and the third rotation speed detector 18c included in the 17b and the third rotation driving device 17c are detected as rotation speed signals, and these rotation speed signals are output to the second control device C2.
- the second control device C2 converts the input rotation speed signal into the transfer roll surface speed and the pick-up roll surface speed based on the transfer roll diameter and the pickup roll diameter, and these surface speeds. Based on the above, the rotational driving of the transfer roll 6 and the pickup roll 5 is controlled by the second and third rotational driving devices 17b and 17c.
- the forward / reverse drive devices 12a to 12c are driven by the first controller C1 and the second controller C2 on the basis of the pressure and the roll speed detected by the load cells 16a to 16c and the rotational speed detectors 18a to 18c.
- the drive of 12c and the rotation drive devices 17a to 17c is controlled.
- the optimum roll pressure and roll peripheral speed ratio (ratio of roll surface speed to sheet material conveyance speed) for obtaining the target film thickness are characteristics such as the specific gravity of the paint stock solution, the concentration after dilution, It depends on various factors such as temperature, viscosity, and the diameter of each of the rolls 5 to 7 at the time of application by the roll coater 1 and the sheet material conveyance speed.
- the roll diameter is gradually reduced by re-polishing at the time of wear.
- the initial setting at the start of coating is set by the operator based on his / her experience, and the actual film thickness is set during the subsequent operation. Based on the measurement and the difference from the target film thickness, the -pressure or roll peripheral speed ratio or both were finely adjusted.
- Patent Document 1 Japanese Patent Laid-Open No. 10-272406
- the -up pressure and the roll peripheral speed ratio The initial setting at the start of application and fine adjustment after the start of application depended on the experience and intuition of the operator and required skill.
- the resulting film thickness depends not only on the characteristics of the coating stock solution itself, but also on the dilution conditions, and also the roll diameter and the sheet material conveyance speed. For example, rolls 5 to 7 are replaced with new ones. If the temperature and transport conditions are different, the target film thickness may not be obtained with the same settings even if the paint that has been used before is applied again.
- the present invention was devised in view of the above-described conventional problems, and provides an automatic operation control apparatus and an automatic operation control method for a roll coater capable of performing coating with a target film thickness accurately by automatic control.
- the purpose is to provide.
- An automatic operation controller for a roll coater is a roll coater operation device that coats a sheet material that is continuously conveyed with paint supplied through a plurality of rotationally driven rolls.
- a rotation driving means for rotationally driving each roll and a roll pressure adjusting means for adjusting the roll pressure between the rolls by controlling the roll in contact with and separating from the other roll, and for each paint individually The operation control data is stored in association with each other, and the paint used, dilution conditions, sheet material conveyance speed, target film thickness and roll diameter are input, and the sheet material conveyance is performed from the operation control data corresponding to the paint used.
- a roll peripheral speed ratio control value corresponding to the speed is determined, and a -p pressure control value corresponding to the target film thickness is determined from the operation control data based on the roll diameter, and the roll peripheral speed ratio control value is determined.
- the automatic control means comprises a measuring means for measuring the actual actual film thickness after coating and outputting it to the automatic control means, the automatic control means comparing the actual film thickness with the target film thickness, The roll peripheral speed ratio control value and the -up pressure control value are corrected based on the operation control data corresponding to the paint used, and the corrected control value is applied to the rotation drive means and the nip pressure adjustment means. It is characterized by outputting.
- a gear amount adjusting means for adjusting the gap amount between the rolls by controlling the roll to contact and separate from the other rolls
- the automatic control means replaces the nip pressure adjusting means for adjusting the nip pressure. And determining the gap amount control value corresponding to the target film thickness and outputting the gap amount control value to the gap amount adjusting means.
- the automatic operation control method for a roll coater is a method for operating a coat coater that coats a sheet material that is continuously conveyed by a paint supplied via a plurality of rotationally driven rolls.
- operation control data individually associated with various paints according to the paint used, dilution conditions, sheet material conveyance speed, target film thickness and roll diameter, from the operation control data corresponding to the paint used.
- the roll peripheral speed ratio control value corresponding to the conveyance speed is determined, and the nip pressure control value corresponding to the target film thickness is determined based on the roll diameter from the operation control data, and these roll peripheral speed ratio control values are determined.
- the rotational drive of the roll is controlled by the pressure control value and the roll pressure control value, and the roll pressure between the rolls is controlled.
- a gap amount control value corresponding to the target film thickness is determined from the operation control data corresponding to the paint used, and a roll amount control value is determined based on the gap amount control value. It is characterized in that the gap amount between them is controlled.
- the automatic operation control device and the automatic operation control method for a roll coater according to the present invention can accurately perform coating with a target film thickness by automatic control.
- the automatic operation control device for a roll coater that is effective in this embodiment is basically transported continuously by the paint supplied through a plurality of rolls 5 to 7 that are rotationally driven.
- the roll driving means for rotating the rolls 5 to 7 and the rolls 5 to 7 controlled to contact and separate from the other rolls 3, 6, and 7 Adjust the -p pressure between -p-pressure
- operation control data is stored individually corresponding to each paint, paint information including paint used, temperature and viscosity, dilution information including dilution conditions such as dilution rate, sheet material conveyance
- the speed, target film thickness, and roll diameter of each roll are input, and the roll peripheral speed ratio control value corresponding to the sheet material conveyance speed is determined from the operation control data corresponding to the paint used, and the operation control data force roll diameter Nip pressure control value corresponding to the target film thickness is determined on the basis of this, and the roll peripheral speed ratio control value is output to the rotation drive means, and the nip pressure control value is output to the nip pressure adjustment means. It is configured with.
- a film thickness meter 20 is provided as a measuring means for measuring the actual actual film thickness after coating and outputting it to the automatic control means 19, and the automatic control means 19 includes the actual film thickness and the target film thickness.
- the roll peripheral speed ratio control value and the nip pressure control value are corrected based on the operation control data corresponding to the paint used, and the corrected control values are output to the rotation drive means and the negative pressure adjustment means.
- the automatic control means 19 updates the operation control data corresponding to the paint used based on the corrected control value.
- the automatic control means 19 is newly provided with the main control device C that newly determines the operating condition for each paint in cooperation with the first control device C1 and the second control device C2.
- the nip pressure and roll peripheral speed ratio are stored in advance as operation control data for each paint, and in actual application, the automatic control means 19 stores the paint and dilution used.
- Enter paint information and dilution information including status, temperature, viscosity, etc., roll diameter of each roll 5-7, and sheet material transport speed and target film thickness data.
- the pressure control value and the roll peripheral speed ratio control value are set and output to the rotation driving means and the nip pressure adjusting means.
- a film thickness meter 20 for measuring the actual film thickness is provided, and depending on the deviation between the actual film thickness and the target film thickness by the automatic control means 19, a -pressure control value or a roll peripheral speed ratio control value Or, both are corrected and output.
- a -pressure control value or a roll peripheral speed ratio control value Or both are corrected and output.
- the automatic operation control device of the roll coater that works in the present embodiment is the same as the configuration described in the above prior art except that the main control device C is newly provided.
- the rotation drive means is composed of rotation drive devices 17a to 17c that rotate and drive the rolls 5 to 7 and rotation speed detectors 18a to 18c that detect the rotation speed of the rolls 5 to 7.
- the pressure adjusting means is composed of forward and backward drive devices 12a to 12c for moving the cradles 11a to forward and backward, and load cells 16a to 16c for detecting the press contact pressure of the rolls 5 to 7.
- the automatic control means 19 includes a first control device C1 that controls the forward / reverse drive devices 12a to 12c, a second control device C2 that controls the rotational drive devices 17a to 17c, and the first control device C1 and the second control device. It consists of a main controller C that outputs control data to C2.
- the roll peripheral speed ratio is the ratio of the roll surface speed to the sheet material conveying speed.
- the main controller C will be described.
- the main controller C is individually associated with various paints used (paint data in Fig. 1), for example, paint names and names.
- And 22 are provided.
- paint information and dilution information including the paint used, dilution state, temperature, viscosity, etc., target film thickness, and each roll diameter are input. Further, the sheet material conveyance speed in the actual operation state is input to the second control device C2 as input data.
- the operation control data is created based on actual measurement values obtained by operating the roll coater 1 for various paints.
- the paint refers to a paint diluted at a certain temperature under a certain dilution condition.
- the roll peripheral speed ratio and the top pressure required for the coat coater 1 differ depending on the dilution conditions.
- basic data (functions) that are basic under a certain dilution condition are created for various paints, and correction data corresponding to various dilution states is generated for the basic data in the form of a function of the dilution conditions. And set for each roll 5-7.
- the conditions include the roll peripheral speed ratio for each roll 5-7, and the nip pressure for the other rolls 3, 7, 6 of each roll 7, 6, 5, which are involved in determining the film thickness. Yes.
- the peripheral speed ratio cannot be changed greatly depending on various conditions, but if the setting is changed, the response to changes in film thickness is fast.
- the roll peripheral speed ratio has a large correlation with the sheet material conveyance speed, so it is necessary to adjust according to the change in the sheet material conveyance speed.
- the nip pressure has a wide range of settings, and the film thickness can be changed greatly by setting, but the response of the actual nip pressure change and film thickness change when the setting is changed is slow.
- the peripheral speed ratio of the nozzle is constant regardless of the target film thickness. This can be done by mainly adjusting the pressure. In addition, if the sheet material conveyance speed changes during actual coating, or if the actual film thickness deviation from the target film thickness is greater than the allowable range due to other factors, the operating conditions of the roll coater 1 It will be necessary to correct this.
- correcting the operating conditions of the roll coater 1 first adjust the roll peripheral speed ratio with quick response. If satisfactory results are not obtained after adjusting the roll peripheral speed ratio, and if further adjustment is required, adjust the nip pressure.
- the roll peripheral speed ratio setting value in the initial operating conditions is an average value within the settable range as much as possible so that the increase / decrease width can be increased. It is desirable that
- the roll peripheral speed ratio in the basic data is expressed in the form of the ratio of the roll surface speed to the sheet material transport speed as described above, and this roll peripheral speed ratio is the sheet material transport speed.
- the pick-up roll 5 usually has a lower correlation with the sheet material conveyance speed than the other rolls 6 and 7, and the peripheral speed ratio of the pick-up roll 5 is not greatly involved in determining the film thickness. Accordingly, the peripheral speed ratio of the pick-up roll 5 is determined mainly for the purpose of stably taking out the paint by the force of the paint pan 4.
- the peripheral speed ratio between the transfer roll 6 and the applicator roll 7 is determined.
- the characteristics of the peripheral speed ratio of the transfer roll 6 and the applicator roll 7 with respect to the sheet material conveyance speed can be considered to be almost the same.
- a better result is obtained if there is a certain ratio of peripheral speed ratio between Therefore, coating is performed under various conditions, and a satisfactory result is obtained with respect to the uniformity of the film thickness, and a condition that does not cause problems such as film breakage is obtained, and based on this, the peripheral speed ratio ratio of these rolls 6 and 7 is determined. Is done.
- the transfer pressure of the transfer roll 6 and the applicator roll 7 is as low as possible within a range where a stable coating state can be obtained so that the increase in pressure can be taken large.
- the pressure is adjusted by adding the adjustment fee due to fluctuations in the data. The above tests determine the roll peripheral speed ratio and the roll pressure for a certain sheet material conveyance speed.
- the negative pressure in the basic data is determined as a function of the target film thickness.
- the top pressure of the transfer roll 6 and the applicator roll 7 is as low as possible within a range where a stable coating state can be obtained.
- a certain sheet material conveyance speed for example, 50 mZ
- each roll peripheral speed ratio determined and the roll pressure of the transfer roll 6 and applicator roll 7 are satisfied, and a standard film is used for the paint.
- the same test is performed for various target film thicknesses, and the pick-up roll 5 pressure for each target film thickness is determined.
- the transfer If it is necessary to adjust the roll pressure of the roll 6 and applicator roll 7 as well, adjust it appropriately to determine the appropriate nip pressure.
- the control unit 22 uses the dilution control data and the roll diameter correction data from the operation control data storage unit 21 to set the same value.
- the basic data (function) of the peripheral speed ratio and -p pressure will be read for each roll 5-7.
- the nip pressure correction value to which the roll diameter correction data is applied to the basic data of the -p pressure is converted into the nip pressure control value and output to the first controller C1,
- the first controller C1 will set the nip pressure of each roll 5-7 to the two-pip control value.
- the roll peripheral speed ratio correction value force corrected with respect to the basic data of the roll peripheral speed ratio is output from the main controller C to the second controller C2, and the second controller C2
- the surface speed of each roll 5-7 is set to the roll peripheral speed ratio control value according to the degree.
- each of the various paints is individually associated with the various paints based on the correlation between the roll peripheral speed ratio, the sheet material conveyance speed, the film thickness, and the -up pressure measured in advance.
- Operation control data is constructed and stored in the operation control data storage unit 21 of the main controller C.
- the roll diameter of each of the rolls 5 to 7 is input to the main controller C, and this roll diameter is used as roll diameter correction data in the operation control data storage unit 21. It is reflected in the value.
- the rotational drive of the rolls 5 to 7 can be controlled with high accuracy by giving the actual roll diameter.
- the roll peripheral speed ratio such as the applicator roll peripheral speed ratio, In order to control the rotation speed of the roll by the device 17a, first, the sheet surface speed is converted into the roll surface speed by the sheet material conveyance speed input to the second control device C2, and then the diameter of the nozzle input to the main control device C is set.
- the nip pressure control value determined by the first control device C1 is the forward / reverse drive devices 12a to 12c, and the roll surface speed set by the second control device C2 is the roll surface speed. Output to 17a to 17c.
- a film thickness meter 20 that measures the actual film thickness of the coating film and outputs the actual film thickness is provided in the transport path of the sheet material 2 after coating.
- the actual film thickness output from the film thickness meter 20 continuously or intermittently is input to the control unit 22 of the main controller C.
- the control unit 22 compares the actual film thickness with the target film thickness to determine whether or not the deviation is within an allowable value. In order to reduce the deviation, the control unit 22 performs the following procedure to reduce the roll peripheral speed ratio and- Correct the control value of the pressure.
- the roll peripheral speed ratio is corrected. Specifically, correct the rotational speed of rolls 5-7 such as applicator roll. However, if the target film thickness cannot be obtained even if the maximum allowable correction is made to the roll peripheral speed ratio, or if the deviation exceeds a certain value, the -up pressure control value is corrected.
- the maximum correction amount with respect to the constant value and the peripheral speed ratio is determined according to the type of paint, viscosity, film thickness and the like.
- the control performed by detecting the film thickness is feedback control, and has a correction cycle and a correction gain so that a large time constant is provided in comparison with the delay time. As a result, stable feedback control is realized by keeping (dead time Z time constant) below a certain value.
- the control unit 22 displays the actual value of the roll peripheral speed ratio and the negative pressure control value at that time as the operation control data storage unit 21.
- the operation control data storage unit 21 corrects the basic data of the roll peripheral speed ratio and the negative pressure.
- the control unit 22 reads out the operation control data corresponding to the used paint from the operation control data storage unit 21, and also reads the correction data corresponding to the dilution condition and roll diameter of the used paint and performs correction.
- the control values of the roll peripheral speed ratio and the negative pressure are output to the first control device C1 and the second control device C2, respectively.
- the first controller C1 sets the nip pressure control values for the rolls 5 to 7 corresponding to the target film thickness.
- the roll peripheral speed ratio control value force obtained and the roll surface speed and the negative pressure control value obtained from the first control device C1 and the second control device C2 are the rotational drive devices 17a to 17c and the forward / reverse drive device 12a.
- these rotary drive devices 17a to 17c and forward / backward drive devices 12a to 12c drive the rolls 5 to 7 in accordance with the control values and adjust the roll pressure of each roll 5 to 7 Come on! /
- the creep pressure has been corrected, even if the rolls 5-7 are worn or the rolls 5-7 are replaced, the correction is made accordingly and the coating is properly applied within the target film thickness or its deviation. It can be performed. And by automatic control without relying on the experience and intuition of the operator, it is possible to set the operating conditions for obtaining the target film thickness accurately, easily and in a short time. It can be carried out.
- the automatic control means 19 corrects the roll surface speed and the negative pressure according to the actual film thickness measured by the film thickness meter 20, so that the accuracy of film thickness control can be improved.
- the amount of room for the target film thickness can be reduced, so the amount of expensive paint used can be reduced.
- the target film thickness to secure the minimum film thickness is ⁇ minimum film thickness + margin '', so if there is a lot of room to allow for the target film thickness, the target film thickness itself must be set thick. Therefore, the average coating amount for that amount increases, but this can be avoided.
- the operation control data is updated based on the corrected control state, the application with the target film thickness can be achieved in a shorter time in the subsequent application of the same paint.
- the automatic operation control device and the automatic operation control method have V, even if there is a deviation, a roll of deviation.
- the automatic control means 19 adjusts the -up pressure.
- a gap amount control value corresponding to the target film thickness may be determined from operation control data corresponding to the paint used, and the gap amount control value may be output to the gap amount adjustment means.
- the roll coater 1 is not limited to the one exemplified in the above embodiment, and may be applied to a two-roll type not including the transfer roll 6 or a type including a metering roll. be able to.
- the film thickness meter 20 may measure the film thickness before and after the paint is dried, regardless of the deviation.
- FIG. 1 is a configuration diagram showing a preferred embodiment of an automatic operation control device for a roll coater according to the present invention.
- 2 is a graph showing an example of a function of a sheet material conveyance speed and a roll peripheral speed ratio used in the automatic operation control method of the roll coater performed by the automatic operation control device of FIG.
- FIG. 3 is a graph showing an example of a function of film thickness and negative pressure used in the automatic operation control method of the roll coater performed by the automatic operation control device of FIG. 1.
- FIG. 4 is a configuration diagram showing an example of a conventional roll coater operating device.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-286739 | 2004-09-30 | ||
JP2004286739A JP2006095468A (ja) | 2004-09-30 | 2004-09-30 | ロールコータの自動運転制御装置および自動運転制御方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006035861A1 true WO2006035861A1 (ja) | 2006-04-06 |
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PCT/JP2005/017932 WO2006035861A1 (ja) | 2004-09-30 | 2005-09-29 | ロールコータの自動運転制御装置および自動運転制御方法 |
Country Status (3)
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JP (1) | JP2006095468A (ja) |
TW (1) | TW200621377A (ja) |
WO (1) | WO2006035861A1 (ja) |
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KR100768404B1 (ko) | 2006-08-22 | 2007-10-18 | 동부제강주식회사 | 연속 칼라 강판 생산라인에서 도장작업 자동제어 방법 |
KR101031275B1 (ko) * | 2008-06-02 | 2011-04-29 | 삼성중공업 주식회사 | 무화 압력 산출 장치 및 방법 |
JP6478110B2 (ja) * | 2015-05-25 | 2019-03-06 | トヨタ自動車株式会社 | 電極の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6064664A (ja) * | 1984-08-03 | 1985-04-13 | Chugai Ro Kogyo Kaisha Ltd | 塗装ラインにおける塗膜厚制御方法 |
JPH10323596A (ja) * | 1997-05-27 | 1998-12-08 | Hirano Tecseed Co Ltd | ロールコータの制御装置及び制御方法 |
JP2000279862A (ja) * | 1999-03-26 | 2000-10-10 | Nisshin Steel Co Ltd | 帯体の塗膜厚制御方法および装置 |
-
2004
- 2004-09-30 JP JP2004286739A patent/JP2006095468A/ja active Pending
-
2005
- 2005-09-29 WO PCT/JP2005/017932 patent/WO2006035861A1/ja active Application Filing
- 2005-09-30 TW TW094134176A patent/TW200621377A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6064664A (ja) * | 1984-08-03 | 1985-04-13 | Chugai Ro Kogyo Kaisha Ltd | 塗装ラインにおける塗膜厚制御方法 |
JPH10323596A (ja) * | 1997-05-27 | 1998-12-08 | Hirano Tecseed Co Ltd | ロールコータの制御装置及び制御方法 |
JP2000279862A (ja) * | 1999-03-26 | 2000-10-10 | Nisshin Steel Co Ltd | 帯体の塗膜厚制御方法および装置 |
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JP2006095468A (ja) | 2006-04-13 |
TW200621377A (en) | 2006-07-01 |
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