KR20230106947A - Roll to roll real-time inspection system - Google Patents

Abstract

The present invention relates to a roll-to-roll real-time inspection system, and in particular, vision inspection is performed while an object to be inspected is transported in a roll-to-roll type, vibration or meandering is corrected and reduced during inspection, and the length required for installation of the inspection device is shortened. It relates to a roll-to-roll real-time inspection system capable of

Description

Roll-to-roll real-time inspection system {ROLL TO ROLL REAL-TIME INSPECTION SYSTEM}

The present invention relates to a roll-to-roll real-time inspection system, and more particularly, to a roll-to-roll type inspection target while transporting a vision inspection, correcting and reducing vibration or meandering during inspection, and length required for installation of an inspection device. It relates to a roll-to-roll real-time inspection system that can shorten

In general, there are a sheet-type inspection method and a roll-type inspection method according to the transport method for inspecting an object to be inspected, and among them, the roll-type inspection method is applied to a plate-shaped length member that can be supplied in a roll type.

For example, a roll-type inspection target such as a flexible PCB (FPCB) made of a flexible material such as polyimide, a thin-film battery intermediate film, and an ultra-thin glass substrate (UTG) applied to a terminal can be inspected while being transported in a roll-to-roll manner.

However, in the conventional roll-type inspection system, as the transfer speed of the inspection subject increases at a high speed or the transfer length increases, the vibration of the inspection subject during transportation increases and meandering occurs in which the posture of the inspection subject is distorted during transportation.

Therefore, there is a problem in that accuracy and reliability are lowered when a vision test is performed using a camera in a state in which a large vibration occurs in an object to be inspected or meandering transfer.

In addition, the inspection is performed on the transport path between the unwinder (supply roll) and the rewinder (take-up roll). At this time, as the number of inspection sections is increased to improve the number of inspection types or inspection accuracy, the length of the entire inspection system becomes excessive. There is a problem that is going on for a long time.

Republic of Korea Patent No. 10-2010860 Republic of Korea Patent No. 10-1117629

The present invention is to solve the above-described problems, it is possible to perform vision inspection while transferring the inspection target in a roll-to-roll type, correct and reduce vibration or meandering during inspection, and shorten the length required for installation of the inspection device. It is intended to provide a roll-to-roll real-time inspection system.

To this end, the roll-to-roll real-time inspection system according to the present invention includes an unwinder for supplying an inspection target wound in a roll type; A rewinder for winding and recovering the inspection target transported from the unwinder in a roll type; a first inspection unit installed in a first inspection section among sections to which the inspection target is transported; a first supply unit installed on an upstream side of the first inspection section and transporting the inspection target by using a rotating roll; a dancer roll installed between the first inspection section and the first supply unit to attenuate tension disturbance generated during the transfer; a second inspection unit installed in a second inspection area downstream of the first inspection area; and a second supply unit that is installed on the downstream side of the second inspection section and transports the object to be inspected using a rotating roll.

At this time, in the first inspection section, a first level roll for guiding the transfer of the subject to be inspected in a state where the vertical height is adjusted and a pair of first level rolls installed on the upstream side and the downstream side, respectively, with the first level roll interposed therebetween. 1 Inspection idle rolls are installed, and in the second inspection section, a second level roll guides the transfer of the subject to be inspected in a state in which the vertical height is adjusted, and the upstream and downstream sides of the second level roll are interposed therebetween It is preferable that a pair of second idle rolls for inspection are respectively installed on the .

The first inspection unit includes a first video camera whose shooting angle toward the inspection target is adjusted according to the adjustment of the vertical position of the first level roll, and the second inspection unit is configured to control the position of the second level roll. It is preferable to include a second video camera whose photographing angle looking at the object to be inspected is adjusted according to the position adjustment in the vertical direction.

In addition, at least one of the first video camera and the second video camera includes a vertical camera for photographing the inspection target in a direction normal to the surface of the inspection target; and an inclined camera installed on one or more of the front and rear sides of the vertical camera within the inspection section and photographing the surface to be inspected in an oblique direction.

In addition, it further includes a linear mover for reciprocating in the forward and backward directions along the transport direction of the inspection target on a virtual surface horizontal to the ground to adjust the position, the linear mover is installed in the first inspection section It includes a linear mover and a second linear mover installed in the second inspection section, and the first level roll and the second level roll are installed in the first linear mover and the second linear mover, respectively, and are positioned forward and backward together with the height. is preferably controlled.

In addition, the linear mover includes a roll guide for guiding movement in a linear direction; a seat moving along the roll guide and having a level roll installed thereon; It is preferable to include; and a controller for controlling the movement and fixation of the seating table.

In addition, a load cell for measuring the load applied to the roll from the inspection target during the transfer of the inspection target; It is preferable to further include; and a control unit for adjusting the supply speed of one or more of the first supply unit and the second supply unit according to the load measured by the load cell.

In addition, an inlet-side conversion roll installed between the dancer roll and the upstream first inspection idle roll to pressurize and transfer the inspection target; It is preferable to further include; and a pull-out switching roll installed between a downstream second inspection idle roll and the second supply unit to pressure-transfer the inspection target.

In addition, it further includes a posture detection camera for providing an image of the inspection target by photographing the inlet-side conversion roll and the withdrawal-side conversion roll during which the inspection target is being transported, wherein the control unit is photographed by the posture detection camera. By analyzing the image, the transfer posture of the inspection target is obtained, and if it is determined that the transfer posture of the inspection target is out of sync compared with the set one, the first level roll and the first level roll and the first level roll to correct the transfer posture of the inspection target. It is desirable to control the position of any one or more of the two level rolls.

As described above, the present invention provides a dancer roll, which is a mass-damper-spring mechanism, at the entry point of the inspection section to attenuate tension disturbance, and corrects the supply speed of the inspection target or the position of the roll according to the measured vibration or posture. do. Therefore, the inspection reliability is improved by correcting and reducing vibration or meandering occurring during the transfer of the inspection target.

In addition, while providing a plurality of inspection sections equipped with inspection units, by switching the transport direction of the inspection target at the start and end points of the inspection section, each section is adjacent to each other, and instead, a level roll is used to optimize the transfer state. control with Thus, it is possible to reduce the overall length required for installation of the inspection device.

1 is a configuration diagram showing a roll-to-roll real-time inspection system according to the present invention.
2 is a configuration diagram showing a dancer roll of the present invention.
3 is a configuration diagram showing the linear mover of the present invention.
4 is a diagram showing a level roll horizontal / vertical adjustment state of the present invention.
5 is an installation state diagram showing the load cell of the present invention.
6 is a state diagram for detecting a posture of a subject to be inspected captured by the posture detecting camera of the present invention.

Hereinafter, a roll-to-roll real-time inspection system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the roll-to-roll real-time inspection system 100 according to the present invention includes an unwinder 110-U, a rewinder 110-R, a first inspection unit 120, and a first supply unit ( 130), a dancer roll 140, a second inspection unit 150 and a second supply unit 160.

As another embodiment, level rolls 123 and 153 and inspection idle rolls 124 and 154 are provided in each inspection section T1 and T2, and a linear mover (LM-T), a load cell (LDC), and a controller 170 ), an inlet-side conversion roll 181, a withdrawal-side conversion roll 182, and a posture camera 190 are further included.

In the above configuration, the inspection target, which was wound on the unwinder 110-U at the front end (upstream side) of the system, is unwound and transported, and then wound on the rewinder 110-R at the rear end (downstream side) of the system and recovered. , The inspection target is transferred by the first supply unit 130 and the second supply unit 160 .

At this time, the inspection target is inspected in a manner such as vision by the first inspection unit 120 and the second inspection unit 150 in the first inspection section T1 and the second inspection section T2, respectively. The tension disturbance is reduced by the dancer roll 140 before inspection, thereby increasing inspection reliability.

In addition, by controlling the level rolls 123 and 153 in the forward and backward directions with a linear mover (LM-T), forward and backward adjustment is possible along with vertical height adjustment in the level rolls 123 and 153, and the load transmitted from the inspected object The transfer state is detected by measuring in the load cell (LDC).

In addition, each inspection section (T1, T2) is equipped with an inlet-side conversion roll 181 and a withdrawal-side conversion roll 182 so that the direction is changed at the section boundary, and the posture camera 190 photographs the transport state of the inspection subject. do. The control unit 170 adjusts the supply speed and tension of the subject to be inspected based on these.

According to the above embodiment, the dancer roll 140, which is a mass-damper-spring mechanism, is provided at the entry point of the inspection section (T1, T2) to attenuate tension disturbance, and is inspected according to the measured vibration or posture. Correct the feed speed or the position of the roll. Therefore, inspection reliability is improved by correcting and reducing vibration or meandering occurring during transport of the inspection target.

In addition, while providing a plurality of inspection sections (T1, T2) equipped with inspection units, by switching the transfer direction of the inspection target at the start and end points of the inspection sections (T1, T2), each section is adjacent to each other, Instead, the transfer state is optimally controlled using the level rolls 123 and 153. Thus, it is possible to reduce the overall length of the inspection system.

To this end, the unwinder (110-U) includes a shaft-shaped bobbin and flanges at both ends of the bobbin, and is installed at the front end of the system to unwind the roll-type inspection target, and the rewinder (110-R) ) is supplied towards

The rewinder (110-R) is to roll and collect the inspection target supplied from the unwinder (110-U) in a roll type, and may be configured including a bobbin and a flange, and the transfer direction of the inspection target It is installed at the rear end of the system as a standard.

The above unwinder (110-U) and rewinder (110-R) have their rotation shafts connected to electric motors, respectively, so that their drive and speed are controlled. Arranged to form a transfer section of the subject to be inspected.

At this time, the subject to be inspected is an FPCB (Flexible PCB) made of a material that bends like polyimide, a thin-film battery intermediate film, and an ultra-thin glass substrate (UTG) applied to terminals that can be transported by roll-to-roll. It includes various plate-shaped length members.

The first inspection unit 120 inspects the quality of the inspection target and is installed in the first inspection section T1 of the sections to which the inspection target is transported. The conveying section means between the unwinder 110-U and the rewinder 110-R, and has a first inspection section T1 having a set length in an upstream part of the section.

Inspection refers to non-destructive inspection that can be performed during transportation, and a typical example is vision inspection. For vision inspection, the first inspection unit 120 may be applied with a first image camera. Therefore, a predetermined inspection can be performed through a video image obtained by photographing a subject to be inspected.

Inspection items for which the vision inspection is performed by the first video camera may include various items such as damage occurring to the inspection target such as cracks as well as mounting conditions of circuit patterns or components, or good or bad molding conditions.

At this time, the video camera 120 preferably includes a vertical camera 121 and an inclined camera 122, and the vertical camera 121 photographs the inspection target in a direction normal to the corresponding inspection target surface to form a circuit pattern. check your back

The inclined camera 122 is installed on one or more of the front and rear sides of the vertical camera 121 within the first inspection section T1, and photographs the surface to be inspected in an inclined direction. Through this, it is possible to more accurately identify areas to be inspected that have thickness, such as cracks.

In such a first inspection unit 120, it is preferable that the shooting angle of the inspection target is adjusted according to the vertical position adjustment of the first level roll 123 to be described later, so that the inspection target is transported under optimal conditions. When the first level roll 123 is adjusted, the first video camera (first inspection unit, 120) is also adjusted in synchronization therewith.

The first supply unit 130 is installed on the upstream side of the first inspection section T1, and transfers the inspection target by using a rotating roll that receives driving force and rotates. In an embodiment, the first supply unit 130 is installed between the unwinder 110-U and the dancer roll 140 to transfer the inspection target toward the first inspection unit 120.

For example, the first supply unit 130 may include a pair of upper and lower transfer rolls 131-T and 131-B through which the inspection target passes through, and the upper roll 131-T is driven. The roll, the lower roll 131-B, is composed of a driven roll (idle) and controls the rotational speed of the driving roll by the motor to adjust the conveyance speed of the inspection target.

At this time, an idle roll 132 may be further included in the inlet portion on the upstream side of the transfer roll. The idle roll 132 may be installed at a position outwardly outward from the straight path (shortest path) between them so as to apply tension by pressing the unwinding object to be inspected from the unwinder 110-U.

The dancer roll 140 attenuates tension disturbance generated during the transfer of the inspection target, and is installed between the first inspection section T1 and the first supply unit 130 as an example. An active dancer or a passive dancer may be applied to the dancer roll 140 .

An active dancer attenuates the vibration of the inspection target at a position before the inspection target enters the first inspection section T1.

As shown in FIG. 2, the active dancer 140 corresponds to a mass-damper-spring mechanism for damping vibration, and uses an actuator to actively dampen tension disturbance generated during the transfer of the subject to be inspected.

For example, the active dancer 140 includes a cylinder device 141 in which a cylinder rod moves forward and backward, a dancer arm 142 connected to the cylinder rod through a joint link 142a, and an end of the dancer arm 142 rotatably. It is configured to include an installed dancer roll 143.

Therefore, according to the driving of the cylinder device 141, the dancer arm 142 is rotated around the rotation axis pin (J) assembled at the rotation center point of the dancer arm 142, and the dancer arm 142 rotates according to the rotation of the dancer arm 142. The position of the dancer roll 143 applying tension in contact with the object to be inspected is approximately adjusted up and down.

On the other hand, a passive dancer (not shown) corresponds to a mass-damper-spring mechanism for damping vibration, but passively attenuates tension disturbance during transport of a subject to be inspected without applying an actuator such as a cylinder.

The passive dancer includes a dancer arm and a dancer roll installed at an end of the dancer arm, except for the actuator, and the dancer arm applies an elastic force in a direction of elastically pressing the object to be inspected by a spring or the like.

Therefore, according to the direction and magnitude of the elastic force (or restoring force) applied by the passive dancer corresponding to the tension of the object to be inspected, the dancer arm rotates and the position of the dancer roll is adjusted up and down to damp vibration.

That is, an up/down stream is formed in which the dancer roll moves upward or downward according to the transport environment of the inspected object and buffers it.

The second inspection unit 150 inspects the quality of the inspection target in the second inspection section T2 provided at the downstream side of the first inspection section T1 described above, and is the first section of the section to which the inspection target is transported. 2 It is installed in the inspection section (T2).

The inspection in the second inspection section T2 may also include a vision inspection for performing an inspection while the inspection target is being transported, and a second video camera may be applied to the second inspection unit 150 for the vision inspection. . Therefore, a predetermined inspection can be performed through a video image obtained by photographing a subject to be inspected.

As an inspection item for which the vision inspection is performed by the second video camera, the inspection of the same item is repeated for the same part (specific part of the subject to be inspected) as the inspection in the first inspection section T1, or the inspection of another item is performed. could be an inspection.

In addition, the first inspection period (T1) and the second inspection period (T2) are to proceed with the inspection for each part of the different parts of the inspection target, and are the same items due to differences in circuit patterns for each part. can be inspected or other items can be inspected.

For this reason, more additional inspection periods (not shown) may be included in addition to the first inspection period T1 and the second inspection period T2. Specifically, the additional inspection section may be provided between the first inspection section T1 and the second inspection section T2 or between the second inspection section T2 and the second supply unit 160, and the corresponding section A third inspection unit (not shown) or the like can be installed.

In addition, the second inspection unit 150 may also include a vertical camera 151 and an inclined camera 152, and the vertical camera 151 photographs the inspection target in a normal direction with respect to the surface of the corresponding inspection target. Check patterns, etc.

The inclined camera 152 is installed on one or more of the front and rear sides of the vertical camera 151 in the second inspection section T2, and photographs the surface to be inspected in an inclined direction. Through this, it is possible to more accurately identify areas to be inspected that have thickness, such as cracks.

In addition, it is preferable that the second inspection unit 150 adjusts the shooting angle looking at the inspection target according to the vertical position adjustment of the second level roll 153 to be described later. When the second level roll 153 is adjusted so that the object to be inspected is transported under optimal conditions, the video camera (second inspection unit, 150) is also adjusted in synchronization therewith.

The second supply unit 160 is installed on the downstream side of the second inspection section T2, and transfers the inspection target by using a rotational roll that receives driving force and rotates. In an embodiment, the second supply unit 160 is installed between the second inspection section T2 and the rewinder 110-R to transfer the inspected object after inspection.

The second supply unit 160 may also include a pair of upper and lower transfer rolls 161-T and 161-B through which a subject to be inspected passes through, and the upper roll 161-T is a driving roll, a lower The roll 161-B is composed of driven rolls and controls the rotational speed of the driving roll by the motor to adjust the conveying speed of the object to be inspected.

In this case, idle rolls 162 may be further included in the take-out part on the downstream side of the inlet part on the upstream side of the transfer roll. The idle roll 162 may be installed at a position outwardly outward from the straight path between them so as to apply tension by pressing the inspected object wound on the rewinder 110-R.

In the first inspection section (T1), the first level roll 123 and the first level roll 123 are interposed between the first level roll 123 and the first level roll 123 for guiding the transfer of the inspected subject in a state where the vertical height is adjusted. A pair of first idle rolls 124 for inspection are installed.

The first level roll 123 provides an optimized transfer state by adjusting the tension while determining the height of the transfer path of the inspection target together with the supply units in the first inspection section T1.

The level roll is one of the transfer rolls whose vertical position (height) is adjusted according to the user's control while maintaining the function of the roll, and the first level roll 123 is the transfer path within the first inspection section T1. Adjust the tension along with the height of the object to be inspected.

In this way, when the position (height) of the first level roll 123 is adjusted, the angle with respect to the ground (horizontal plane) of the inspection target is changed in the first inspection section T1 where the vision inspection is performed.

At this time, the first inspection unit 120, that is, the first video camera, since the optimal angle for photographing the subject to be inspected is determined, the first video camera 120 adjusts the vertical height of the first level roll 123. The shooting angle looking at the subject to be inspected is adjusted.

In order to adjust the shooting angle, the first video camera 120 is installed, for example, in a 3-axis driver (X/Y/Z driver) that operates according to a control signal from the controller 170, so that the first level roll 123 is The shooting posture is automatically adjusted according to the adjusted height.

In the second inspection section (T2), the second level roll 153 for guiding the transfer of the subject to be inspected in a state where the vertical height is adjusted and the second level roll 153 are interposed on the upstream and downstream sides, respectively. A pair of second inspection idle rolls 154 are installed.

The second level roll 153 determines the height of the inspection target along with the supply units in the second inspection section T2 and simultaneously adjusts the tension to provide an optimized transfer state. That is, the second level roll 153 adjusts the tension along with the height of the inspection target on the transfer path within the second inspection section T2.

In this way, when the position (height) of the second level roll 153 is adjusted, the angle with respect to the ground (horizontal plane) of the inspection target is changed in the second inspection section T2 where the vision inspection is performed.

At this time, since the second inspection unit 150, that is, the second video camera, also has an optimal angle for photographing the subject to be inspected, the second video camera 120 adjusts the vertical height of the second level roll 153. The shooting angle looking at the subject to be inspected is adjusted.

As described above, in order to adjust the shooting angle, the second video camera 120 is installed, for example, in a 3-axis actuator that operates according to the control signal of the controller 170, so that the second level roll 153 is at the adjusted height. The shooting posture can be automatically adjusted accordingly.

The linear mover (LM-T) adjusts the position of the level rolls 123 and 153 by reciprocating in the forward and backward directions along the conveyance direction of the subject to be inspected on a virtual surface horizontal to the ground. A first linear mover LM-T installed in the inspection section T1 and a second linear mover LM-T installed in the second inspection section T2 are included.

At this time, the above-described first level roll 123 and second level roll 153 are installed in the first linear mover LM-T and the second linear mover LM-T, respectively, so that their forward and backward positions are adjusted.

That is, the level rolls 123 and 153 adjust the height as a unique function in a state in which the forward and backward positions can be adjusted by the linear mover LM-T. Accordingly, the position in the front-back direction is also adjusted along with the height.

As in Figure 3. The linear mover (LM-T) includes, for example, a roll guide (LMa) for guiding linear movement, a seat (LMb) moving along the roll guide (LMa) and having level rolls 123 and 153 installed thereon, and the It includes an adjuster LMc that controls the movement and fixation of the seating table LMb.

More preferably, the linear mover (LM-T) is installed in the front part of the roll guide (LMa) in the longitudinal direction, and the front stopper (ST1) for limiting the front side movement length of the seat stand (LMb) and the seat stand on the opposite side A rear stopper ST2 for limiting the rear side movement length of LMb may be further included.

The linear mover (LM-T) having the above configuration adjusts the front and rear positions of the first level roll 123 and the second level roll 153. The adjustment can be made only through free movement by the test subject in an idle state or forced by a separate actuator.

As shown, the roll guide (LMa) is applied with a guide formed with rails to guide linear movement, such as a LM (Linear Motion) guide, and the seating base (LMb) is a roll guide including a drive wheel engaged with the rail It is free to move along (LMa).

The adjuster LMc is for adjustment by moving the position of the seating base LMb and for fixing after completion of the adjustment, and may include various well-known components such as a driving motor, a control knob, or a fixing jig depending on its type. there is.

At this time, the stoppers ST1 and ST2 are front-side stoppers ST1 at the center C of the set interval so as to limit the forward and backward movement of the seat LMb on which the level rolls 123 and 153 are installed within a predetermined range. and the rear side stopper (ST2) are spaced apart from each other.

Therefore, in the present invention, as shown in (a) of FIG. 4, the level rolls 123 and 153 are in a normal state (initial setting state), the height is adjusted upward as shown in (b) of FIG. 4, Various adjustments are possible, including the right movement state as shown in (c) and the left movement state as shown in FIG. 4 (d).

At this time, the idle rolls 124 and 154 provided at the front and rear ends of the level rolls 123 and 153 can freely rotate without motor drive, and can move up/down according to the position change according to the adjustment of the level rolls 123 and 153. It is equipped to enable movement of the support end down/left/right. Therefore, the force beyond the set value is not applied to the object to be inspected.

On the other hand, the present invention further includes a configuration of sensing so that real-time automatic adjustment is made by reflecting the actual environment in which the inspection target is inspected in a driving state after the initial adjustment, and changing the transfer condition of the inspection target through the sensing.

To this end, the present invention measures the load applied to the roll from the inspected subject during the transfer of the inspected subject in a load cell (load cell, LDC), and the control unit 170 first supply unit 130 according to the measured load and the second supply unit 160 to adjust the supply speed of any one or more.

As shown in Figure 5, the load cell (LDC) may be integrally installed on a roll (roll) for guiding the transfer of the inspection subject to detect the load and its change occurring during the transfer of the inspection subject. The roll on which the load cell (LDC) is installed is preferably an intake-side conversion roll 181 and a withdrawal-side conversion roll 182, which will be described later.

When the roll is provided with the load cell (LDC), the load cell (LDC) is installed on the rotation shaft protruding from the body of the roll center to both sides, and the rotation shaft is inserted into the inward insertion groove of the load cell (LDC) to transmit the load. this may apply.

Therefore, by monitoring the load transmitted by the inspection target during transport, it is possible to adjust the transfer environment of the inspection target after direct monitoring in the section that is the target of adjustment.

For example, the control unit 170 adjusts the supply speed of the inspection target. For speed regulation, at least one of the first supply unit 130 and the second supply unit 160 is controlled, and preferably the supply speed is controlled in both of them.

In addition, the present invention is provided with idle rolls 181 and 182 between the dancer roll 140 and the first inspection section T1 and between the second inspection section T2 and the second supply unit 160, respectively, to Tension is applied to the object to be inspected, and the overall length (equipment width) required for installation of the inspection device is reduced through a change of direction.

To this end, an inlet-side conversion roll 181 is provided between the dancer roll 140 and the first inspection section T1, and a withdrawal-side conversion roll is provided between the second inspection section T2 and the second supply unit 160. (182). The intake side conversion roll 181 and the withdrawal side conversion roll 182 are rolls that rotate at fixed positions.

That is, the inlet-side conversion roll 181 is installed between the dancer roll 140 and the first inspection idle roll 124 on the upstream side to pressurize and transfer the inspection target, and the withdrawal-side conversion roll 182 is installed on the downstream side. It is installed between the second inspection idle roll 154 and the second supply unit 160 to pressurize and transfer the inspection target.

At this time, the inlet-side switching roll 181 is disposed between the dancer roll 140 and the first inspection section T1 to apply tension to the inspection target and change the direction. For example, when the dancer roll 140 and the first inspection section T1 are located at the lower side, the inlet-side conversion roll 181 is disposed above them.

The withdrawal-side conversion roll 182 is also disposed at a position where tension is applied to the object to be inspected and the direction is changed between the second inspection section T2 and the second supply unit 160 . For example, when the second inspection period T2 is located above the first inspection period T1, the withdrawal-side conversion roll 182 is disposed below the second inspection period T2.

Therefore, the direction is changed at both ends of the first inspection section T1, respectively, to become a ┗┛ pattern as a whole, and the direction is changed at both ends of the second inspection section T2, respectively, to become a ┏┓ pattern as a whole. In addition, a reverse pattern in which these patterns are upside down is also possible.

Therefore, according to the present invention, vertical zigzag arrangement (vertical crossing arrangement) is possible at each boundary for each section, thereby reducing the overall length required for equipment of the device.

The posture camera 190 provides an image of the inspection target by capturing the incoming-side conversion roll 181 and the withdrawal-side conversion roll 182 being transported. In other words, the posture detection camera 190 provides a photographed image of the inspection target being transported by the roll.

To this end, the attitude detection camera 190 is directly above the switching rolls 181 and 182 being rotated and the moving rolls 181 and 182 disposed up and down while in contact with each other so that the moving rolls 181 and 182 and the moving target can be photographed at the same time. It is installed to shoot from the side.

Thereafter, the controller 170 analyzes the image captured by the posture detection camera 190 through image signal processing to obtain the transfer posture or position of the inspection target based on the changeover rolls 181 and 182 .

As shown in FIG. 6, the transfer posture or position of the inspection target is, for example, the end points SI on both sides of the switching rolls 181 and 182 in the width direction, and the center point O of the transfer roll in the width direction of the inspection target being transferred. It can be confirmed through the contact position and the angle θ formed between both sides of the inspection target and both ends of the changeover rolls 181 and 182.

Therefore, the control unit 170 analyzes the image captured by the posture detection camera 190, obtains the transfer posture of the inspection target, and compares the transfer posture of the inspection target with the set one, and determines that the transfer posture of the inspection target is displaced. Control (correction) the position of any one or more of the first level roll 123 and the second level roll 153 so as to correct the conveying attitude of the .

In the above, specific embodiments of the present invention have been described in detail. However, the spirit and scope of the present invention is not limited to these specific embodiments, but those skilled in the art can make various modifications and variations without changing the gist of the present invention. You will understand when you grow up.

Therefore, since the embodiments described above are provided to completely inform those skilled in the art of the scope of the invention to which the present invention pertains, it should be understood that it is illustrative and not limiting in all respects, The invention is only defined by the scope of the claims.

T1: first inspection section
T2: second inspection section
LDC: load cell
LM-T: linear mover
110-U: Unwinder
110-R: Rewinder
120: first inspection unit (first video camera)
123: first level roll
130: first supply unit
140: dancer roll (active dancer, passive dancer)
150: second inspection unit (second video camera)
153: second level roll
160: second supply unit
170: control unit
181: inlet side conversion roll
182: withdrawal side conversion roll
190: posture camera

Claims (9)

An unwinder (110-U) for supplying an object to be inspected wound in a roll type;
A rewinder (110-R) for winding and recovering the inspection target transported from the unwinder (110-U) in a roll type;
a first inspection unit 120 installed in a first inspection area T1 among the areas in which the inspection target is transported;
a first supply unit 130 installed on an upstream side of the first inspection section T1 and transporting the inspection target by using a rotating roll;
a dancer roll 140 installed between the first inspection section T1 and the first supply unit 130 and attenuating tension disturbance generated during the transfer;
a second inspection unit 150 installed in a second inspection area T2 at a downstream side of the first inspection area T1; and
A roll-to-roll real-time inspection system comprising a; second supply unit 160 installed on the downstream side of the second inspection section T2 and transporting the inspection target using a rotating roll. According to claim 1,
In the first inspection period (T1),
A first level roll 123 for guiding the transfer of the inspection target in a state where the vertical height is adjusted and a pair of first inspections installed on the upstream side and the downstream side with the first level roll 123 interposed therebetween For idle roll 124 is installed,
In the second inspection period T2,
A second level roll 153 for guiding the transfer of the inspection target in a state in which the vertical height is adjusted and a pair of second inspection devices installed on the upstream side and the downstream side with the second level roll 153 interposed therebetween Roll-to-roll real-time inspection system, characterized in that for the idle roll (154) is installed. According to claim 2,
The first inspection unit 120,
Including a first video camera whose shooting angle looking at the inspection target is adjusted according to the vertical position adjustment of the first level roll 123,
The second inspection unit 150,
The roll-to-roll real-time inspection system, characterized in that it comprises a second video camera whose shooting angle looking at the inspection target is adjusted according to the vertical position adjustment of the second level roll (153). According to claim 3,
At least one of the first video camera and the second video camera,
a vertical camera for photographing the inspection target in a direction normal to the inspection target surface; and
a roll-to-roll real-time camera installed at one or more of the front and rear of the vertical camera in the inspection section (T1, T2) and photographing the surface to be inspected in an oblique direction; inspection system. According to claim 2,
Further comprising a linear mover (LM-T) for adjusting the position by reciprocating in the forward and backward directions along the transport direction of the inspection target on a virtual surface horizontal to the ground,
The linear mover LM-T includes a first linear mover LM-T installed in the first inspection section T1 and a second linear mover LM-T installed in the second inspection section T2. and
The first level roll 123 and the second level roll 153 are installed in the first linear mover LM-T and the second linear mover LM-T, respectively, so that their forward and backward positions are adjusted together with the height. Roll-to-roll real-time inspection system, characterized in that. According to claim 5,
The linear mover (LM-T),
a roll guide (LMa) for guiding linear movement;
a seating base (LMb) moving along the roll guide (LMa) and having level rolls (123, 153) installed thereon; and
The roll-to-roll real-time inspection system comprising a; controller (LMc) for controlling the movement and fixation of the seating table (LMb). According to claim 2,
A load cell (load cell, LDC) for measuring a load applied to a roll from the inspection subject during transport of the inspection subject; and
A control unit 170 for adjusting the supply speed of one or more of the first supply unit 130 and the second supply unit 160 according to the load measured by the load cell (LDC); characterized in that it further comprises a roll Two-roll real-time inspection system. According to claim 7,
an inlet-side switching roll 181 installed between the dancer roll 140 and the upstream first inspection idle roll 124 to pressurize and transfer the inspection target; and
It is installed between the second inspection idle roll 154 on the downstream side and the second supply unit 160, and a pull-out side conversion roll 182 for pressurizing and transferring the inspection target; roll characterized in that it further comprises Two-roll real-time inspection system. According to claim 8,
Further comprising a posture detection camera 190 for providing an image of the inspection target by photographing the inlet-side conversion roll 181 and the withdrawal-side conversion roll 182 during which the inspection target is being transported,
The controller 170,
Analyzing the image captured by the posture detection camera 190 to obtain the transfer posture of the inspection target,
When it is determined that the transfer posture of the inspection target is displaced compared to the set one, the position of one or more of the first level roll 123 and the second level roll 153 is controlled to correct the transfer posture of the inspection target. Roll-to-roll real-time inspection system, characterized in that for.

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