WO2017164597A1

WO2017164597A1 - Device and method for correcting coating positon of low-ignition cigarette paper

Info

Publication number: WO2017164597A1
Application number: PCT/KR2017/002976
Authority: WO
Inventors: 주성호; 박정연; 조영일; 이용수; 김영신; 권학주; 김종오; 맹경호
Original assignee: 주식회사 케이티앤지
Priority date: 2016-03-21
Filing date: 2017-03-20
Publication date: 2017-09-28
Also published as: KR20170109364A

Abstract

The present invention: is applicable to a low-ignition cigarette paper manufacturing apparatus including a coating unit for applying a low-ignition coating composition to the cigarette paper being transferred, detects information on a coating position of the low-ignition coating composition on the cigarette paper so as to recognize repeated band patterns, and finds the position, at which a band of a specific distance is generated, among the band patterns, so as to compare the detected coating positon and a reference coating position, thereby detecting whether there is an error of the coating position; recognizes an error angle between the coating positon and a set reference position if it is determined that there is an error, calculates a correction speed corresponding to the error angle, and then calculates a driving speed by adding up the speed of a main shaft connected to the coating unit, and the correction speed; and drives a motor such that the main shaft rotates at the calculated driving speed.

Description

Apparatus and method for correcting the coating position of low ignition cigarette paper

The present invention relates to a device and a method for correcting the coating position of a low ignition cigarette paper.

In general, cigarette paper of cigarettes is not only manufactured so that the target tar and target nicotine can be fulfilled in smoking by appropriate porosity and combustibility, but also to give a tobacco intrinsic taste. And cigarette paper is made of flax, wood pulp and the like.

Low-ignition cigarette paper is coated with a bandage of a substance such as starch, and the porosity of the coated portion is low, so when the combustion of the cigarette reaches the band portion, the amount of oxygen that enters the tobacco grass decreases and the cigarette is digested. Can be.

The coating of the combustible material is then carried out by a mechanism, i.e. a coating unit. For this reason, the coating point of the coating unit may change due to mechanical errors of the coating unit or the external environment (eg, external shocks or vibrations such as earthquakes). In addition, if the coating point is left unchanged for a long time, the position of the coating of the combustible material on the cigarette paper is greatly deviated from the set position so that the combustible material does not play a role.

One embodiment of the present invention is to compensate for the coating position of the low ignition cigarette paper. One embodiment of the present invention is to reduce the manufacturing failure of low-ignition cigarette paper.

In addition to the above objects, it can be used to achieve other objects not specifically mentioned.

The coating position correction device according to an embodiment of the present invention for solving the above problems is applied to a low ignition cigarette paper manufacturing apparatus comprising a coating unit for applying a low ignition coating composition to the cigarette paper in transit, the low Coating position detection sensor for detecting information about the coating position of the ignitable coating composition, an error detection unit for detecting whether the coating position error by comparing the coating position detected from the coating position detection sensor with the reference coating position, the error in the error detection unit If it is determined, the correction speed calculation unit for determining the error angle between the coating position and the reference position and calculates the correction speed corresponding to the error angle, the driving speed by summing the speed and the correction speed of the main shaft connected to the coating unit A driving speed calculating unit for calculating, and a driving speed calculated by the driving speed calculating unit And a driver for driving the motor to rotate said main shaft.

The apparatus further includes a coating position detector configured to provide information on a coating position detected by the coating position detection sensor to information in a form that can be compared with information on the reference coating position and to provide the error detection unit.

The information on the detected coating position and the reference coating position may be in the form of a square wave pulse or a position value.

The coating position correction method according to an embodiment of the present invention for solving the above problems is applied to a low ignition cigarette paper manufacturing apparatus comprising a coating unit for applying a low ignition coating composition to the cigarette paper being transported, the low ignition coating composition Detecting a coating position of the substrate and providing information on the detected coating position, comparing the detected coating position with a reference coating position, and detecting a position error of the coating, the coating position determined as the coating position error and the reference coating Determining an error value between positions, outputting a driving signal to move by a distance corresponding to the determined error value, and controlling the coating unit according to the driving signal.

The method may further include making the information on the detected coating position into deformation information in a form that can be compared with the information on the reference coating position. The detecting of the coating position error may be performed on the deformation information and the reference coating position. By comparing the information, the coating position error is detected.

The error value is an angular error between the detected coating position and the reference coating position or a position difference value between the detected coating position and the reference coating position.

The outputting of the driving signal may include calculating a driving speed by adding the rotation speed and the correction speed of the main shaft connected to the coating unit, and outputting the driving signal corresponding to the driving speed.

In the controlling of the coating unit, a motor connected to the main shaft is driven according to the driving signal to drive the main shaft at the driving speed.

One embodiment of the present invention can compensate for the coating position of low-flammable cigarette paper and reduce manufacturing defects of low-flammable cigarette paper.

1 is a cross-sectional view schematically showing an apparatus for producing a low ignition cigarette paper according to an embodiment of the present invention.

2 is a block diagram of a coating position correction apparatus according to an embodiment of the present invention.

3 is a view illustrating a band position error grasping method according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating a coating position correction method according to an embodiment of the present invention.

5 is a block diagram of a coating position correction device according to another embodiment of the present invention.

6 is a flowchart illustrating a coating position correction method according to another embodiment of the present invention.

7 is a block diagram of a coating position correction device according to another embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals designate like elements throughout the specification. In addition, in the case of well-known technology, a detailed description thereof will be omitted.

In the present specification, when a part is said to "include" a certain component, it means that it may further include other components, without excluding the other components unless otherwise stated. In addition, the terms “… unit”, “module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software, or a combination of hardware and software.

1 is a cross-sectional view schematically showing an apparatus for manufacturing a low ignition cigarette paper according to an embodiment of the present invention. Referring to FIG. 1, an apparatus for manufacturing a low ignition cigarette paper according to an embodiment of the present invention will be described. The cigarette paper 19, on which the roll 19 is rolled, is supplied to the coating unit through the

rollers

910, 920, and 930.

The coating unit 100 is a unit for applying the coating composition 17 to the cigarette paper 19. For example, the coating unit 100 includes a flat roller 110 and a concave roller 120. The coating composition 17 is transferred to the flat roller 110 by the rotation of the concave roller 120, the coating composition 17 is coated on the cigarette paper 19 by the flat roller 110, and the coating composition 17 ) Is applied to the low ignition cigarette paper 19 is moved through the roller 930. The coating unit 100 may include a supplying member 140 in which the coating composition 17 is contained. Referring to FIG. 1, the supply member 140 may supply the coating composition 17 to the lower portion of the concave roller 120. In addition, the supply member 140 may supply the coating composition 17 to an upper portion where the concave roller 120 and the flat roller 110 meet.

The low ignition cigarette paper 19 coated with the coating composition 17 passing through the coating unit 100 passes through

drying units

210 and 220 for drying the coating unit 18. For example, the

drying units

210 and 220 may be a heating bar, a near infrared lamp, or the like. One or more drying units may be used.

The low ignition cigarette paper 19 passing through the

drying units

210 and 220 passes through the air moving unit 300. The air transfer unit 300 includes an inlet 311 through which air is injected, an outlet 319 through which air is injected, and an air moving body portion 310. The air transfer unit 300 may reduce the damage of the coating 18 of the low ignition cigarette paper 19, which is not completely dried, by transferring the low ignition cigarette paper 19 by turning the air, and contaminated. Poor transfer due to this can be prevented.

The air may be compressed air. For example, the pressure of the compressed air can be from about 3 bar to about 6 bar. By controlling the amount of compressed air, the height at which the low ignition cigarette paper 19 rises can be appropriately adjusted. The air may be dispersed in a direction substantially perpendicular to the coating 18. The outlet 319 is located on the curved surface of the air conveying body portion.

The low ignition cigarette paper 19 passing through the air transfer unit 300 passes through the

cooling units

230 and 240. The

cooling units

230 and 240 lower the temperature of the low ignition cigarette paper 19 raised by the

drying units

210 and 220. For example, the

cooling units

230 and 240 may be cooling bars to which materials such as cooling water are supplied. One or

more cooling units

230 and 240 may be used.

The low ignition cigarette paper 19 passing through the

cooling units

230 and 240 passes through the air transfer unit 400. The air transfer unit 400 includes an inlet 411, an outlet 419, and an air transfer body 410, and the description of the above-described air transfer unit 300 may be equally applied.

The low ignition cigarette paper 19 which has passed through the air transfer unit 400 is supplied to the cigarette manufacturing apparatus including the low ignition cigarette paper through the roller 940.

The device for producing a low ignition cigarette paper may be implemented in an on-line form by mounting inside the cigarette manufacturing apparatus, and may be implemented in an off-line form by mounting outside the tobacco manufacturing apparatus. The cigarette paper of the cigarette 1 thus prepared includes a plurality of coatings 18 coated with a coating composition made of a combustible material, for example, as shown in FIG. Although the coating part 18 illustrated in FIG. 3B is illustrated in the form of a band, the coating part 18 may have various shapes.

Meanwhile, the apparatus for manufacturing a low ignition cigarette paper to which the coating position correcting apparatus according to an embodiment of the present invention is applied is not limited to the above-described manufacturing apparatus, and may be applied to all kinds of low ignition cigarette paper manufacturing apparatuses.

Hereinafter, a coating position correction apparatus according to an embodiment of the present invention will be described as an example of a device for manufacturing a low ignition cigarette paper described with reference to FIG. 1. 2 is a block diagram of a coating position correcting apparatus according to an embodiment of the present invention, which relates to a case in which the coating unit 100 moves in response to a coating position error.

2, the coating position correction apparatus according to an embodiment of the present invention, the coating position detection sensor 101, the coating position determining unit 102, the error detection unit 103, the error value detection unit 104, correction Position adjusting unit 105, the coating position correction device 106 and the moving device 107.

The coating position detection sensor 101 is a sensor for detecting the position of the coating portion 18, that is, the coating position, in the cigarette paper, and is formed in the process line after the coating portion 18 is formed on the cigarette paper by the coating unit 100. Installed at any one location. In FIG. 2, the coating position detection sensor 101 is shown as being positioned near the roller 940, but ideally, the coating position detection sensor 101 is located near a cutting portion (not shown) for cutting low-ignition cigarette paper. This is because the coating position detection sensor 101 is installed near the cut portion can reduce the influence of the position deviation due to the expansion and contraction of the paper.

As the coating position detecting sensor 101, for example, a contrast sensor or the like is used. The contrast sensor irradiates a laser beam with cigarette paper and converts the reflected light into an analog current and outputs it. At this time, the sensor output current changes according to the contrast or the reflectivity of the surface where the laser beam touches the cigarette paper. For example, as shown in (a) of FIG. 3, the uncoated portion has a high current value, and the coated portion has a low current value. 3 is a view illustrating a band position error detecting method according to an exemplary embodiment of the present invention, in which the output of the coating position detecting sensor 101 is amplified and inverted.

The coating position determining unit 102 receives and amplifies the output of the coating position detecting sensor 101, that is, the analog current, and converts the high level portion into the coating position, that is, the coated band by converting the square wave at an appropriate threshold level. Judging by the position of. The coating position determining unit 102 provides the error detection unit 103 with information about the coating position determined by comparing and detecting the distance between specific bands in the repeated arrangement of the coated bands and detecting the position of the specific pattern. , Coating position determining unit 102 is 30mm, 17mm, 20mm, 17mm,. It is possible to detect a position where a 30 mm band distance is generated in an array in which the back band is infinitely repeated.

The error detection unit 103 stores information on the normal coating position, and compares the information on the coating position received from the coating position determining unit 102 with the information on the normal coating position to detect an error of the coating position.

The information on the coating position provided by the coating position determining unit 102 is the output of the coating position detection sensor 101 as shown in (a) of FIG. 3 or the coating as shown in (b) of FIG. It may be a square wave C2 (hereinafter referred to as “detection square wave”) corresponding to the output of the position detection sensor 101. Alternatively, the information about the coating position may be represented by various types of deformation information such as time or phase information on the time of occurrence.

If the information on the coating position used in the error detection unit 103 is the output of the coating position detecting sensor 101, the coating position detecting unit 102 can be excluded from the configuration. This can be used in the case of band intervals of the same distance.

The information on the normal coating position is in the form corresponding to the information on the coating position provided by the coating position determining unit 102, for example, the information on the normal coating position for the coating position provided by the coating position determining unit 102 When the information is a detection square wave C2, the information may be a square wave C1 (hereinafter referred to as a “reference square wave”) corresponding to the detection square wave C2.

The error detector 103 calculates a difference angle by comparing the machine angle captured at the rising time at which the reference square wave is generated with the reference angle.

The error value detection unit 104 converts the difference angle calculated by the error detection unit 103 into a correction distance L.

The correction position adjusting unit 105 converts the correction distance L provided by the error value detecting unit 104 into the correction speed (correction speed) and the rotational speed (RPM) in units of time according to a conversion function (or a conversion table, etc.). Converted to the rotation time (s) including the acceleration and deceleration and the correction position adjusting unit 105 outputs a drive signal for shifting the position by the correction value of the length unit converted by the coating unit 100.

The coating position correction device 106 generates a driving force according to the driving signal of the correction position adjusting unit 105. The moving device 107 operates in conjunction with the operation of the actuator 106, and is configured to move the coating unit 100 (or the flat roller 110) by the operation, and is provided by the coating position correcting device 106. The coating unit 100 is moved by the correction value of the length unit according to the driving force and moved by the correction value of the length unit. At this time, the correction value has a "-" value or a "+" value and moves the coating unit 100 to the roller 920 side or the roller 930 side according to the "-" value or "+" value.

Here, the moving device 107 is positioned below the coating unit 100 to support the fixing and movement of the coating unit 100, or when a separate device is provided to support the fixing and movement of the coating unit 100. Move the device.

On the other hand, the coating position correction apparatus according to an embodiment of the present invention, the output of the coating position determining unit 102, the output of the error detection unit 103, the output of the error value detection unit 104, the correction position adjusting unit 105 It may further include a display unit (not shown) that allows the user to visually check the operation state of the.

Hereinafter, a coating position correction method will be described with reference to FIG. 4. 4 is a flowchart illustrating a coating position correction method according to an embodiment of the present invention.

Referring to FIG. 4, the coating position detecting sensor 101 irradiates a laser beam to a low ignition cigarette paper being transported (S401), receives a reflected light, and receives an analog current value corresponding to the received reflected light. (S402).

The coating position grasping unit 102 grasps a point where the received analog current value indicates a current value of a set value or more as a coating position, generates a detection square wave C2 corresponding to the identified coating position, and provides it to the error detection unit 103. (S403). The error detector 103 compares the received detection square wave C2 with a preset reference square wave C1, or compares the machine angle value and the reference angle value that were captured when the detection square wave C2 was generated (S404). In operation S405, a position error (that is, a time error) is determined from the detection square wave C2.

When the position error is generated by the error detector 103, the error value detecting unit 104 grasps the distance error L corresponding to the position error and provides it to the corrected position adjusting unit 105 (S406). The correction position adjusting unit 105 calculates a correction length corresponding to the time error L, that is, a correction value in units of length (S407), and corrects the coating position so that the coating unit 100 corresponding to the correction length is moved. The operation of the device 106 is controlled (S408).

When the coating unit 100 is moved by the correction length, the position coated on the cigarette paper is changed to the normal position, and thus, the error detection unit 103 does not detect the coating position error. Meanwhile, if the coating position information corresponding to the set coating position is not detected, the error detection unit 103 may determine that the coating corresponding to the coating position has not been made and inform the user or stop the manufacturing apparatus.

Hereinafter, a coating position correction apparatus according to an embodiment of the present invention will be described with reference to FIG. 5. 5 is a block diagram of a coating position correcting apparatus according to another embodiment of the present invention, in which the synchronization angle of the coating unit 100 is adjusted in response to a coating position error. Hereinafter, the same reference numerals are assigned to the same components as the above-described embodiments.

Referring to Figure 5, the coating position correction apparatus according to an embodiment of the present invention, the coating position detection sensor 101, the coating position determining unit 102, the error detection unit 103, the correction speed calculation unit 104a, driving And a speed calculating section 105a, a driver 106a, and a motor 107a.

The coating position detecting sensor 101 detects the coating position of the coating unit 18 on the cigarette paper, and the coating position detecting unit 102 detects a specific distance from the arrangement of the coated band through the output of the coating position detecting sensor 101. Determine the position with and provides information on the coating position to the error detection unit (103). The error detection unit 103 stores information on the normal coating position, and compares the information on the coating position received from the coating position determining unit 102 with the information on the normal coating position to detect an error of the coating position.

The information on the normal coating position is in the form corresponding to the information on the coating position provided by the coating position determining unit 102, for example, the information on the normal coating position for the coating position provided by the coating position determining unit 102 The information may be a machine angle (an angle of a rotary encoder installed on the machine axis) captured at the time of generation of the detection square wave C2.

The error detector 103 compares the detected specific band interval with the reference angle and determines that an error is detected.

Determining an error means a difference between a generation position of the reference pattern and a set reference angle.

The correction speed calculation unit 104a converts the angle error into a speed value according to a set conversion function (or conversion table or the like). The speed thus obtained is the correction speed.

The driving speed calculator 105a receives the speed information of the main shaft connected to the concave roller 120 of the coating unit 100, receives the correction speed from the correction speed calculator 104a, and calculates the correction speed and the speed of the main shaft. The driving speed is calculated by adding up. For example, when the speed information of the main shaft is measured by a rotary encoder (not shown), the driving speed calculator 105a receives the speed of the main shaft from the rotary encoder.

The driver 106a receives the drive speed from the drive speed calculator 105a, calculates a drive signal corresponding to the received drive speed, and drives the motor 107a with the calculated drive signal.

The driver 106a receives the drive speed from the drive speed calculator 105a, generates a rotational power corresponding to the received drive speed, and drives the motor 107a.

The motor 107a is connected to two rollers 110 and 120 (hereinafter referred to as a 'coating roller') of the coating unit 100 by a main shaft, and a rotation speed output according to a driving signal provided by the driver 106a. To be different.

The

coating rollers

110 and 120 have a higher or lower rotation speed depending on the rotation speed applied from the motor 107a. Therefore, the

coating rollers

110 and 120 applied with the rotational speed added by the correction speed become faster or slower as the correction speed, so that the synchronization angle is changed and the angle error is corrected.

Hereinafter, a coating position correction method according to another exemplary embodiment of the present invention will be described with reference to FIG. 6. 6 is a flowchart illustrating a coating position correction method according to another embodiment of the present invention.

Referring to FIG. 6, processes S601 through S605 are the same as processes S401 through S405 described with reference to FIG. 4, and thus detailed descriptions thereof will be omitted.

If the error detection unit 103 determines that the coating position error, the correction speed calculation unit 104a calculates an error angle (S606), calculates a correction speed corresponding to the error angle, and provides it to the driving speed calculation unit 105a. (S607). Accordingly, the driving speed calculator 105a calculates a driving speed obtained by summing the correction speeds from the main shaft speeds of the

coating rollers

100 and 120 that are currently being driven, and provides the driving speed to the driver 106a (S608).

The driver 106a generates a rotational power corresponding to the driving speed in which the correction speeds are summed and provides the motor 107a, the motor 107a rotating the shaft of the coating roll (S609), and the concave roller 120 is the main It rotates at the correction speed added to the axis rotation (S610).

Looking at the rotation of the

coating rollers

110 and 120 reflecting such a correction speed, when the coating position error is (-), that is, the detection position is later than the reference position and the error angle indicates a negative value, the correction speed is reflected. The

coating rollers

110 and 120 have a faster rotation speed by the size of the error angle. When the coating position error is (+), that is, the detection position is faster than the reference position and the error angle indicates a positive value, the

coating rollers

110 and 120 reflecting the correction speed have a rotation speed as large as the error angle. Slows down

Hereinafter, a coating position correction apparatus according to another embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a block diagram of a coating position correcting apparatus according to another embodiment of the present invention, in which a synchronization angle of the coating unit 100 is adjusted using a differential gear in response to a coating position error. Hereinafter, the same reference numerals are assigned to the same components as the above-described embodiments.

Referring to FIG. 7, the coating position correcting apparatus according to an exemplary embodiment of the present invention includes a coating position detecting sensor 101, a coating position detecting unit 102, an error detecting unit 103, a correction speed calculating unit 104a, and a correction. The driver 106b, the correction motor 107b and the differential gear portion 108 are included.

The coating position detecting sensor 101 detects the coating position of the coating unit 18 in the cigarette paper, and the coating position detecting unit 102 detects the coating position through the output of the coating position detecting sensor 101, and an error detecting unit. It is determined that 103 is an error of the coating position, and the correction speed calculation unit 104a calculates an angle error and calculates a correction speed corresponding to the angle error.

The correction driver 106b generates a drive signal corresponding to the correction speed to drive the correction motor 107b, and the mother motor 107b provides the differential gear unit 108 with power (rotary power) corresponding to the correction speed. .

The differential gear portion 108 is composed of at least one gear for rotating the main shaft and at least one gear rotating by the correction motor 107b, and the concave roller 120 at the rotational speed of the main shaft in the absence of coating position error. Rotate the concave roller 120 at a rotational speed at which the rotational speed and the correction speed of the main shaft are added when the coating position error occurs.

The rotational speed of the concave roller 120 is adjusted by the rotational speed to which the correction speed is added, and thus the compensation for the coating position error, that is, the angular error is achieved.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements have been made by those skilled in the art to which the present invention pertains. Belongs to the range.

Apparatus and method for correcting the coating position of low ignition cigarette paper according to an embodiment of the present invention can be used as a cigarette paper manufacturing apparatus of the cigarette manufacturing apparatus.

Claims

It is applied to a low ignition cigarette paper manufacturing apparatus comprising a coating unit for applying a low ignition coating composition to the cigarette paper in transit,

Coating position detection sensor for detecting information on the coating position of the low ignition coating composition in cigarette paper,

An error detection unit for detecting an error in the coating position by comparing a position where bands of a specific interval are generated from the coating band array detected by the coating position detection sensor with a reference coating position;

A correction speed calculator for determining an error angle between the coating position and the reference coating position and calculating a correction speed corresponding to the error angle when the error detection unit determines that the error is an error;

A driving speed calculator configured to calculate a driving speed by summing the speed of the main shaft connected to the coating unit and the correction speed; and

And a driver for driving the motor to rotate the main shaft at the drive speed calculated by the drive speed calculator.
In claim 1,

And a coating position detecting unit which provides information on the coating position detected by the coating position detecting sensor to form the information that can be compared with the information on the reference coating position and provides the error detecting unit.
In claim 2,

And information on the detected coating position and the reference coating position is a square wave pulse shape.
It is applied to a low ignition cigarette paper manufacturing apparatus comprising a coating unit for applying a low ignition coating composition to the cigarette paper in transit,

Detecting the coating position of the low ignition coating composition and providing information on the detected coating position;

Detecting the coating position error by comparing the detected coating position with a reference coating position;

Determining an error value between the coating position determined as the coating position error and a set reference position;

Outputting a driving signal to move by a distance corresponding to the determined error value, and

Controlling the coating unit according to the driving signal.
In claim 4,

Further comprising the step of making the information on the detected coating position in the form of deformation information that can be compared with the information on the reference coating position,

Detecting the coating position error

Coating position correction method for detecting a coating position error by comparing the deformation information and the information on the reference coating position.
In claim 4,

The error value is

Coating position correction method which is an angular error between the detected coating position and the reference coating position.
In claim 4,

The error value is

Coating position correction method that is a time difference value between the detected coating position and the reference coating position.
In claim 4,

And the information on the detected coating position and the reference coating position are square wave pulses or position values.
In claim 6,

The step of outputting the drive signal

And calculating the driving speed by adding the speed of the main shaft connected to the coating unit and the correction speed, and outputting the driving signal corresponding to the driving speed.
In claim 9,

Controlling the coating unit

And a motor connected to the main shaft to drive the main shaft at the driving speed by driving the motor according to the driving signal.