KR20110100893A - Optical film laser slitting system - Google Patents

Abstract

The present invention unwinds the roll-shaped optical film as a raw material, and rewinds each slit film in the form of a roll by slitting (dividing) the sheet-like optical film into a slitter in a predetermined width. TECHNICAL FIELD The present invention relates to a laser slitting system, and more particularly, to an optical film laser slitting system which reduces the time required for moving a machine.

Description

Optical film laser slitting system {OPTICAL FILM LASER SLITTING SYSTEM}

The present invention unwinds the roll-shaped optical film as a raw material, and rewinds each slit film in the form of a roll by slitting (dividing) the sheet-like optical film into a slitter in a predetermined width. TECHNICAL FIELD The present invention relates to a laser slitting system, and more particularly, to an optical film laser slitting system which reduces the time required for moving a machine.

Optical films represented by polarizing films, retardation films, and the like are important optical components constituting liquid crystal displays (LCDs) and the like. Usually, roll-shaped optical films are used as raw materials, and the optical films of the sheets are longitudinally slitted from them. It manufactures by winding up the wound laser slitting process and the roll wound by this laser slitting process, and carrying out laser cross cutting of a slit film.

The laser slitting system usually includes an unwinder having a raw material roll, an optical film, a laser slitter for slitting the sheet-shaped optical film in one to three rows in the longitudinal direction, and one to three rows of slit films. It is comprised by the winding machine which winds up again.

The unwinding, conveying, and winding of such a laser slitting system is realized by roll-to-roll equipment.

However, the method of applying tension to the optical film during operation of the roll-to-roll equipment was arbitrarily set by looking at the deflection state of the hanging optical film.

Since the tension value is arbitrarily set in the whole system only by this deflection state, it is not good for the product quality due to meandering (sliding to one side), slip, etc., without considering the tension difference according to the equipment function or the tension difference or combination thereof according to the width length. affect.

On the other hand, in the roll-to-roll equipment, a winding defect (star defect) caused by the surrounding air being sucked up during the winding of the slit film occurs (see FIG. 14). give. In addition, the winding failure is not uniform contact relationship between the wound slit film may be pressed in many places and pressed in some places may damage the product.

That is, as shown in FIG. 15, when the incident angle i1 wound up of the slit films 3a to 3c on the winding rolls 51a to 51c is completely wound up when the incident angle i1 when it is first wound up (when the diameter is small) is wound up ( Larger than the incident angle i2 of the winding diameter (i1 > i2).

Due to such a difference in incidence angle, as shown in FIG. 6A, the amount of air mixing is maximized, and the amount of air mixing decreases linearly.

In addition, as shown in Fig. 5A, there is shown a non-uniform pressure state in which the maximum pressure is applied between the first and the last wound state.

Therefore, when the outermost slit film subjected to the maximum pressure is pressed inwards, the slit films of which air mixing amount is not constant are pressed down and collapsed to be pressed in a star shape.

On the other hand, in the laser slitter, slitting is performed with a slit film having a desired predetermined width and a trim film trimming both edges.

The slit film is wound on each winding roll, and the trim film is put in a basket.

By the way, since the basket is installed on the lower floor of the laser slitter, the operator should always wait and check.

That is, a long process such as putting a basket (garbage box)-> checking the basket status-> basket processing was performed.

On the other hand, the conveying optical film vibrates up and down to some extent. This wave vibration affects the quality of the laser slit surface. Thus, in the conventional method for preventing vibration, the position of the laser itself was adjusted by automatic position control, but the equipment was expensive, the mechanism was complicated, and the reaction speed was low, so it was difficult to secure vibration stability.

On the other hand, as shown in Figure 16, the CPC (sensor position control) system 8 used in the existing roll-to-roll equipment is a device for detecting both ends of the slit film to check the center, both ends monitoring The sensor width is fixed at a narrow width. Therefore, when the width of the optical film or the slit film is longer than the narrow width of the sensors 8a and 8b, the light emitted from the projector 8a does not enter the light receiving portion of the detector 8b so that the position of the sensor is always correct. Because of the misconception, the CPC system must be moved when the width of the film changes. This takes time for the move, which leads to a loss of operating time, thereby weakening productivity.

In addition, as shown in FIG. 17, the pipe 4 connecting the suction box 41 and the dust collecting box 43 for removing the laser gas (laser fume) has a chair shape when viewed from the side to avoid the laser beam. 90 degree double bending is attached to the piping bracket (4a).

However, this 90 degree double bent portion serves as a dead zone that prevents the suctioned laser gas from moving smoothly. In particular, the laser gas has a sticky property, so once accumulated, the laser gas does not fall well and continues to accumulate.

This clogging cycle is fast, so it is necessary to clean it frequently, and it is cumbersome to remove the pipe 4 to clean it.

On the other hand, as shown to Fig.10 (a), since the laser slit surface swells to some extent by heating, it winds up in the concave form when the sensor is wound up to a winding roll uniformly. Therefore, the middle part becomes a pressed bad disk, which adversely affects the quality.

On the other hand, after laser slitting, foreign materials, especially laser fumes, are welded together as if they are welded near the slit surface, which can be removed with an adhesive roller to remove them, or with a brush and blown by blow. have.

However, adhesive rollers are easy to remove from the film, but it is very difficult to remove the fused fume.

In addition, the blow method is difficult to remove the fused fume, and the equipment is many and complicated and occupies a large space, thereby counteracting the compact equipment. In addition, the blow method has a high possibility that the wind affects the film to generate vibration.

Meanwhile, referring to FIG. 2, in the film transfer mechanisms R1 to R4 (DGR) of the laser slitter 30, the driving roll DGR serves to force the film (slip prevention) together with the nip roll. do. In addition, the nip roll is used for adjusting the gap of the film and moving the tension while moving up and down.

However, since the nip roll itself has an error, there is a phenomenon in which the film cannot be pressed evenly and is drawn to the pressed portion. In addition, the gap needs to be adjusted and the up and down drive equipment of the nip roll is required, taking up space as much as the space of this equipment.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides an optical film laser slitting system that eliminates the time required to move a position according to a film whose width is changed by using a sensor having a length range corresponding to all widths. There is a purpose.

In order to achieve the above object, the optical film laser slitting system according to claim 1 of the present invention,

A take-up machine in which a disc roll of the optical film is installed; A slitter which trims and slits the optical film unwound from the unwinder in a feeding direction and cuts the slits into a plurality of slits and trim films; A center position control (CPC) system for controlling the center position of each slit film; Each of the slit film that controls the center position includes a plurality of winding machines wound on a winding roll,

The CPC system includes a CPC sensor disposed at an upper portion and a lower portion of the slit film, a controller that receives whether the center of the slit film is separated from the CPC sensor, and a guide roll driven by the controller to guide the slit film. Including a drive cylinder to adjust the position of,

Each of the CPC sensors is formed longer than the width of the slit film.

According to this configuration, it is possible to reduce or eliminate the time required to move the position according to the film whose width is changed by using the sensor of the length range corresponding to all the widths.

The optical film laser slitting system according to claim 2 of the present invention,

The CPC sensor includes a projector having a light emitting unit disposed below the slit film, and a detector having a light receiving unit disposed above the slit film, wherein the light receiving unit and the light emitting unit are mounted in a wide width in the width direction.

The optical film laser slitting system according to claim 3 of the present invention,

The guide roll is swingably provided with respect to the center of the width direction of the slit film by the drive cylinder.

According to this configuration, the swing of the guide roll causes both sides of the film to swing back and forth like a seesaw, so that both edges are piled up in a zigzag to eliminate swelling and improve quality.

The optical film laser slitting system according to claim 4 of the present invention,

Further comprising a laser dust collector for collecting the gas generated during the cutting of the optical film, the laser dust collector is composed of a suction box, a dust collecting box, a pipe connecting the suction box and the dust collecting box, the pipe is the laser slitter It is preferable to be inclined so as to secure a path of the laser beam reflected from the oscillator of the emitter and reflected on the reflector.

The optical film laser slitting system according to claim 5 of the present invention,

The pipe is preferably composed of a lower pipe, one end of which is connected to the suction box, the other end of the upper pipe connected to the dust collecting box, the intermediate slope pipe connecting the other end of the lower pipe and one end of the upper pipe.

The optical film laser slitting system according to claim 6 of the present invention,

The pipe is supported by a pipe bracket fixed on the laser slitter, wherein the pipe bracket extends from one end of the horizontal pipe bracket to support the upper pipe, and fixed to the laser slitter. It is preferably composed of a vertical pipe bracket.

The optical film laser slitting system according to claim 7 of the present invention,

The pipe is preferably made of PVC.

The optical film laser slitting system according to claim 8 of the present invention,

The pipe is preferably made of a metal material is coated plastic.

As is apparent from the above description, the optical film laser slitting system according to the present embodiment has the following effects.

By using a wide sensing CPC sensor, it is possible to cope with the length of all widths, reducing or eliminating the time required to move the equipment along the length of the width.

In addition, by implementing the slitting with a laser, by implementing a high-speed slitting to improve the mass production speed to increase the production, it is possible to shorten the process by securing the quality of the slitting surface.

In addition, by swinging about the center of the slit film in the width direction, the width edge of the slit film is wound on the take-up roll in a zigzag, thereby swinging both sides of the slit film back and forth (back and forth in the transfer direction) like a seesaw, so that both edges are zigzag. Improves quality by eliminating swelling.

In addition, the pipe is inclined so that foreign matter generated during laser cutting hardly accumulates in the pipe, thereby reducing the cleaning time and improving productivity through shortening of operation preparation time.

1 is a process perspective view schematically showing the main part of an optical film laser slitting system according to a preferred embodiment of the present invention;
2 and 3 are a side view and a flow chart schematically showing the process diagram of FIG.
4 is a front view showing a trim processor.
Figure 5a is a diagram showing the pressure distribution according to the change in the diameter of the take-up roll.
5B and 5C are side and plan views illustrating an air entrained air volume control unit for pressure uniformity control.
Figure 6a is a diagram showing the air mixing amount distribution according to the change in the diameter of the take-up roll.
6B and 6C are side and plan views illustrating an air entrained air volume control unit for controlling the incident angle uniformity.
Figure 7 is a side view showing the laser slitter and the dust collecting pipe of the present invention.
8A-8C are a bottom perspective view, a bottom plan view and a side view of the main portion of the laser slitter;
9A to 9C are conceptual views, plan views and perspective views schematically showing a swing combined CPC system of the present invention.
10 is a schematic diagram showing (a) a bad wound state and (b) a good wound state.
11 is a perspective view showing a cleaner of this embodiment.
12 and 13 are process views and perspective views of the belt link system.
FIG. 14 is a diagram illustrating a winding defect (star defect).
15 is a case in which winding failure occurs, (a) is a large angle of incidence when the diameter is small, (b) is a diagram showing a case where the angle of incidence is small when the diameter is large.
16 is a perspective view schematically showing a conventional CPC system.
17 is a side view showing a conventional laser slitter and dust collecting piping.

Unwinding used in the detailed description and claims of this embodiment is to unwind the raw material (optical film) wound in a roll shape is transferred to the sheet shape, rewinding is a sheet shape processing the optical film It is defined as winding the slit film in roll shape again.

In addition, in the detailed description of the present embodiment, one optical film is slitted with two rows of two slits and two trim heads, respectively, wound in three rows, and the remaining two rows are trimmed and discharged. The number of slit heads is also adjustable according to the number of divisions, and it will be apparent to those skilled in the art that the trim may or may not be performed depending on the trim.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a process perspective view schematically showing a main part of an optical film laser slitting system according to a preferred embodiment of the present invention, and FIGS. 2 and 3 are side views and flowcharts schematically showing the process diagram of FIG. 1.

As shown in Figure 1 and 2, the optical film laser slitting system according to the present embodiment is classified by the equipment function of the unwinder 10, the laser slitter 30 and the plurality of winding machines (50a ~ 50c) Consists of

That is, the unwinder 10 is a device that allows the optical film 1 to be released in a sheet shape, and the laser slitter 30 uses the optical film 1 as a plurality of slit films 3a to 3c and trim film 5. ), And the winding machines 50a to 50c are the equipment for winding the slit films 3a to 3c again.

On the other hand, when divided by the tension section, the optical film laser slitting system according to the present embodiment is unwinding section (a), unwinding feed section (b), winding feed section (c1 ~ c3) and winding section (d1 ~ d3) It consists of.

The unwinding section a is a section between the disc roll 11 and the unwinding nip roller A, and provides the unwinding feed section b with the optical film 1 having controlled the edge or the center position.

The unwind feed section (b) is a section between the unwind nip roller (A) and the unwind feed nip roller (B), wherein a single width of the optical film 1 has a plurality of slit films 3a to 3c and trim film 5. It is transported while processing.

The winding feed section c1 to c3 is a section between the unwinding feed nip roller B and the wound feed nip rollers C1 to C3, and the slit films 3a to 3c are branched into each of the winding rolls 51a to 51c. Transferred.

The winding section d1 to d3 is a section between the winding feed nip rollers C1 to C3 and the winding rolls 51a to 51c. The winding rolls 51a to 51c cover the slit films 3a to 3c which control the center position and the like. ) Is wound up.

Tension is provided against sagging of the films during operation of such roll-to-roll equipment.

There are two ways to apply tension: 1) the length of the width, 2) the function of the equipment, and 3) the combination of 1) and 2).

1) In the method according to the length of the width, the tension can be set by dividing each tension section.

For example, after setting the tension for width 1m as 200N / m, provide a standard for setting the tension according to the change of width length for each section to prevent sagging, meandering and slipping during operation at 60m / min speed. To ensure stability.

section Unwind Unwind feed 1 winding feed 1 winding 2 winding feed 2 winding 3 winding feed 3 winding Trim (left) Trim (Right) proportion One 1.1 1.1 1.2 1.1 1.2 1.1 1.2 1.1 1.1 N / m 200 m 1.3 1.3 0.404 0.404 0.404 0.404 0.404 0.404 0.044 0.044 N 260 286 89 97 89 97 89 97 10 10

In other words, in the case of the 1300 mm disk, since the width does not change in the unwinding section a and the unwinding feed section b, it is set to 200 * 1.3 = 260N.

In the unwind feed section (b) is divided into before and after trimming, the tension of the trim film 5 after trimming may be set to 200 * 0.044 = 10N.

Since the winding feed sections c1 to c3 and the winding sections d1 to d3 are divided into three columns in width, their width becomes smaller and is set to 200 * 0.404 = 89N.

2) The tension according to the equipment function (unwinding, processing, winding) is composed of a system that pulls relatively to the winding side to secure the stability of operation.

That is, when the tension value of the unwinding section a corresponding to the unwinder 10 is set to 1, the unwinding feed section b and the winding feed section c1 to c3 corresponding to the laser slitter 30 are 1.1, the winding section (d1 ~ d3) corresponding to the winder 50 is set to 1.2 ~ 1.5 tension proportional value differently.

Unwinder: Laser Slitter: Winder = 1: 1.1: 1.2 ~ 1.5

3) Combination by equipment function and tension section

As shown in the table above, if the tension proportional value and the width value according to the width of each equipment function are set, the precise tension value for each section is set.

That is, the unwinding section a is set to 1 * 200 * 1.3 = 260N, and the unwinding feed section b is set to 1.1 * 200 * 1.3 = 286N. The trim section is set to 1.1 * 200 * 0.044 = 10N.

The winding feed sections c1 to c3 are set to 1.1 * 200 * 0.044 = 89N, and the winding sections d1 to d3 are set to 1.2 * 200 * 0.044 = 97N.

Such a tension value is adjusted by the rotational force of the servomotor which drives nip roller A (B) (C1-C1) and winding rolls 51a-51c.

On the other hand, the trim film 5 is discharged toward the basket 9 by the discharge roller 7 as shown in FIG.

In addition, as shown in Figures 2 and 4, it is preferable that the trim processor 60 for automatically discharging the trim film 5 is disposed.

The trim processor 60 is composed of a trim film conveyor 60 disposed at one side under the trimmed trim film 5 and the other side disposed at the basket 9 containing the trim film 5.

That is, the trim film conveyor 60 is disposed between the trim film horizontal conveyor 61 disposed below the trim film 5 on which one side is cut, and the other side of the trim film horizontal conveyor 61 and the basket 9. The trim film slant conveyor 63 is comprised.

The basket 9 may be separately transported in the form of a cart or may be a waste disposal site. In addition, the processing speed may be adjusted by adjusting the conveying speed of the conveyor.

Due to this conveyor system, the basket 9 may be introduced into the laser slitter 30, and the worker may wait to transport the basket to check the state of the basket 9. .

In addition, the trim film inclined conveyor 63 is preferably disposed to be inclined θ so that the height thereof becomes higher toward the basket 9.

This can increase the height of the basket 9, which can significantly increase the discharge throughput of the trim film 5, thereby further securing work productivity.

On the other hand, when winding up the slit films 3a-3b to the winding rolls 51a-51c, air mixes between a slit film and a slit film. The mixed air constitutes a fine space between the slit film and the slit film, so that the winding film near the rotational axis is easily pressed by the outermost winding film to form a star shape. This deformation causes the slit film to be defectively processed.

In addition, fine spaces can cause shape collapse. This is similar to the principle that if the roll tissue is wound tightly on the core, the shape is maintained even if the core is pulled out, but if the coil is loosely wound, the tissue is pulled out and the shape collapses when the core is pulled out.

In order to prevent such a winding failure, it is preferable that a mixed air amount control unit 90 as shown in Figs. 5A to 6B is provided.

As shown in FIG. 5A, the pressure P of the slit films 3a to 3c wound on the winding rolls 51a to 51c has a maximum pressure Pmax formed at the minimum and maximum winding diameters, and further at the minimum winding diameter. As it winds up, the pressure drops sharply and maintains the minimum pressure (Pmin) until it is wound to some extent, and then rises rapidly near the maximum diameter to the maximum pressure.

Therefore, in order to make the amount of entrained air uniform, it should be controlled on the basis of the maximum pressure to prevent the mixing of air or the entrained air uniformly between the slit film and the slit film to prevent winding failure.

As shown in FIGS. 5B and 5C, the mixed air volume control unit 90 includes a touch roll 91 and a touch roll 91 that contact the slit films 3a to 3c wound on the winding rolls 51a to 51c. The pressure uniformity control part which controls the touch roll moving part 93 by detecting the winding diameter of the touch roll moving part 93 and the winding rolls 51a-51c which move to the direction which retracts from the winding rolls 51a-51c ( 95).

The touch roll 91 is a roll which touches the conveyance of the slit films 3a-3c to the guide and the winding rolls 51a-51c, and applies a maximum pressure.

The touch roll moving unit 93 is preferably configured to include a driving cylinder 93 installed at one end or both ends of the touch roll 91 to move the touch roll 91 in the retreat (or forward) direction.

The pressure uniformity control unit 95 is inputted through a pressure measuring sensor mounted on the winding rolls 51a to 51c and gradually retracts the touch roll moving unit 93 so that the touch roll 91 applies the maximum pressure (opposite transfer direction). Let's do it.

On the other hand, in addition to the method of making the pressure uniform, there is a method of uniformly controlling the incident angle i of the slit films 3a to 3c incident on the winding rolls 51a to 51c as shown in Figs. 6A and 6B.

As shown in FIG. 6A, the entrained air amount between the slit films 3a to 3c wound on the winding rolls 51a to 51c is the maximum air amount Qmax at the minimum diameter and the minimum air amount Qmin is formed at the maximum diameter. .

Therefore, in order to make the amount of entrained air uniform, it is necessary to control on the basis of the minimum amount of air to prevent mixing of air or form entrained air at least uniformly between the slit film and the slit film being wound to prevent winding failure.

The mixed air volume control unit 190 includes a touch roll 191, a touch roll moving unit 193, and an incident angle uniformity control unit 195 similarly to the mixed air volume control unit 90.

The touch roll 191 is a roll for guiding the slit films 3a to 3c immediately before being wound onto the winding rolls 51a to 51c.

The touch roll moving unit 193 is installed at one end or both ends of the touch roll 191 similarly to the touch roll moving unit 93 to move the touch roll 191 in the retracted (or forward) direction. It is preferable that it consists of.

The incident angle uniformity control unit 195 receives the input through the winding wound amount measuring sensor mounted on the winding rolls 51a to 51c and gradually retreats the touch roll moving unit 93 so that the touch roll 91 applies the maximum pressure. Direction).

1 and 7, the laser slitter 30 includes a laser oscillator 31, a reflector 32, and a plurality of heads 33 and 34.

The laser oscillator 31 is a device for generating a laser beam, the heads 33 and 34 are nozzles for irradiating the generated laser beam to the optical film 1, and the reflector 32 is a laser of the laser oscillator 1 It is a mirror that reflects the beams to the heads 33 and 34.

The heads 33 and 34 are composed of a slit head 33 for slitting the optical film 1 to a predetermined width and a trim head 34 for trimming both edges.

The slit head 33 can be added or subtracted according to the number of columns of width. For example, when there are two slit heads 33, the slits are slit up to three rows in width. If you want to slit two rows wide, only one slit head needs to be operated. The width direction distance of the slit head 33 is also adjustable.

In addition, it is preferable that the laser slitter 30 includes the laser dust collector 40 for collecting the gas (smoke) generated during the cutting of the optical film 1.

The laser dust collector 40 includes a suction box 41 disposed around the heads 33 and 34, a dust collecting box 43 for collecting gas, and a pipe connecting the suction box 41 and the dust collecting box 43. It consists of 45.

As shown in FIGS. 8A and 8B, the suction box 41 is a box disposed near the heads 33 and 34 to suction foreign matter (for example, laser fume) due to laser processing.

The dust collecting box 43 is a cylinder in which the laser fume sucked through the suction box 41 is collected.

The pipe 45 is inclined to secure the path of the laser beam. That is, since the piping 45 is arrange | positioned between the laser oscillator 31 and the reflecting mirror 32, the laser beam of the laser oscillator 31 should not be caught by the piping 45. FIG.

Therefore, the pipe 45 has a lower end pipe 45a having one end connected to the suction box 41, an upper end pipe 45b having the other end connected to the dust collecting box 43, and the other end of the lower pipe 45a and the upper end pipe ( It consists of the intermediate inclination pipe | tube 45c which connects one end of 45b).

In addition, the intermediate inclination pipe 45c is inclined obliquely, so that smoke of a sticky nature that is sucked is not easily caught. Therefore, the cleaning time of the piping 45 which is difficult to clean can be shortened, the preparation time for operation is shortened, and productivity is improved.

Pipe 45 is supported on the pipe bracket 47 is fixed on the laser slitter 30,

The pipe bracket 47 extends downwardly from one end of the horizontal pipe bracket 45a to support the upper pipe 45b and the vertical pipe fixed to the main body of the laser slitter 30. It is comprised by the bracket 45b. Therefore, the pipe bracket 47 is simple in shape by bending twice.

At this time, the lower pipe (45a) is stainless, intermediate slope pipe (45c) is aluminum or cast iron, the upper pipe (45b) is preferably implemented in a material of PVC.

On the other hand, the entire pipe 45 may be made of a plastic-based material, particularly PVC. Plastic has a slippery property, so sticky laser fume does not stick well, and foreign materials are not easily loaded in the pipe.

In addition, the pipe 45 may be made of a plastic-based metal-based material to prevent the accumulation of foreign matter. At this time, the metal is preferably implemented in stainless steel or steel.

On the other hand, the optical film 1 to be transferred may cause wave vibration when passing through the laser slitter 30. If this vibration occurs on the irradiation side, the quality is affected. That is, when the laser slit, the vibration width of the optical film 1 should be within ± 300 to ensure stable quality. This is usually caused by a large vibration when the distance between the guide roll R2 and the guide roll R3 disposed between the laser slitters 30 becomes large.

The distance between the guide roll R2 and the guide roll R3 is set and the rolls R2 and R3 near the laser slitter 30 due to the laser heads 33 and 34 and the suction box 41. It is also not easy to approach.

In order to solve this problem, as shown in FIGS. 8A to 8C, it is preferable that the anti-vibration contact member 35 is disposed near the irradiation part of the laser beam.

The anti-vibration contact member 35 is implemented as a wheel-shaped upper roll 36 disposed on the upper surface of the optical film 1 to help the optical film 1 to be transferred in a straight form.

The upper roll 36 is preferably disposed on both sides (both in the width direction) of the laser beam irradiated to the optical film 1.

Therefore, since the upper rolls 36 on both sides are below the irradiated portion of the laser beam, the optical film 1 to be conveyed is moved up and down in contact with each other so as to suppress wave vibrations, so that the distance between the irradiated portion and the optical film is reduced. Keep it as constant as possible so that no error occurs due to the slit.

In particular, the upper roll 36 is disposed close to the irradiation section, and its vibration suppressing effect is very excellent.

In addition, since the upper roll 36 is mounted to the suction box 41 using the roll bracket 38, a mounting space is not necessary separately.

In order to more reliably prevent such a vibration, it is preferable that the lower roll 37 is further provided in the lower surface of the optical film 1.

The lower roll 37 is disposed on the lower surface of the optical film 1 and the lower surface of the slit films 3a to 3c, respectively, and can reliably prevent wave vibrations up and down. The lower roll 37 is disposed in front and rear (length direction or transfer direction) of the laser slitter 30 so as to be implemented as a cylindrical roll to also function as a guide roll.

In this way, the upper roll 36 and the lower roll 37 was confirmed to have an effect of suppressing the vibration of the irradiated portion by acting as a reinforcement roll up to 80 m / min feed rate using a vibration check meter.

On the other hand, the present invention includes a center position control (CPC) system to prevent meandering of long (long length) film in order to more precisely correct wrinkles, deflection, deformation, etc. of the slit film (3a ~ 3c) to be wound do. The CPC system detects the edge edges of the optical film 1 or the slit films 3a to 3c with an air servo sensor or an optical sensor, and controls the conveying direction based on the information, so that the center of the film in the width direction is constant. In order to be a conveying position, specifically, as an actuator thereof, meandering correction is performed by shaking one or two guide rolls or a flat expander roll having a drive left and right (or up and down) with respect to the line direction, Two sets of pinch rolls are provided (one is provided on the front and back side of the film, which are on both sides of the film), and the film is sandwiched between them to correct the tension meandering (cross guider method). The principle of meandering correction of these devices is that in the former method, the film is tilted so that the film is directed to the right while the film is going to the left, for example, and in the latter method, the set of pinch rolls on the right is nip. To the right.

9A and 9B, the CPC system 80 of this embodiment includes a CPC sensor 81 disposed at both edges of the slit films 3a to 3c to be transferred, and a slit film from the CPC sensor 81. The drive cylinder 85 which adjusts the position of the controller 83 which receives input of the center deviation of 3a-3c, and the guide roll 89 which is driven by the controller 83 and guides the slit films 3a-3c. ).

The CPC sensor 81 has a projector 81a having a light emitting portion 82a disposed below the slit films 3a to 3c, and a detector having a light receiving portion 82b disposed above the slit films 3a to 3c. It consists of 81b. At this time, the light emitting portion 82a and the light receiving portion 82b are mounted with a wide width (or more than the entire width) in the width direction of the slit films 3a to 3c.

The length of the projector 81a and the detector 81b is at least longer than the width of the slit films 3a to 3c as shown in FIG. 9C, so that the CPC sensor 81 is independent of the variation in the width of the slit films 3a to 3c. You can detect this without moving).

By this configuration, the light emitted from the light emitting portion 82a detects the amount of light entering the light receiving portion 82b and centers it. For example, when it is judged that the sensor is not correct when the light coming from the left and the light coming from the right are not received the same, the driving cylinder 85 moves the guide roll 89 to the left or right to align the center.

Therefore, since the width of each width of the slit films 3a to 3c can be slit in various ways depending on the use, the CPC sensor 81 does not need to move to the corresponding position even if the width is changed, thereby reducing the operation time. Minimize the time loss caused by

This CPC system 80 is applicable not only to the slit films 3a to 3c but also to the optical film 1 between unwinding and laser processing. Of course, the EPC (edge position control) system 20 is preferably used before trimming.

The EPC system 20 is similar in structure and function to the CPC system 80, but uses only one sensor because it detects only one edge.

On the other hand, the slit surface of the laser slitting slit films (3a ~ 3c) swells compared to the other surface.

When the swollen slit films 3a to 3c are wound up, they take a concave shape toward the center from both edges (see FIG. 10A).

In order to solve this, it is preferable that the swing member 180 swinging about the center of the width direction of the slit films 3a to 3c is disposed in front of the take-up rolls 51a to 51c.

The swing member 180 is wound around the winding rolls 51a to 51c in a zigzag in the width direction edges of the slit films 3a to 3c swinging (see FIG. 10B).

The swing member 180 may use the configuration of the CPC system 80 as it is.

That is, the swing member 180 pulls the guide roll 89 of the CPC system 80 in a direction opposite to each other with respect to the conveying direction as shown in FIG. 9A, and swings at the center of the guide roll 89. In this case, it is preferable that the swing driving cylinder 185 is further installed separately from the driving cylinder 85.

Therefore, when the center of the film is swinged with the guide roll 89, the edges are wound while being zigzagly overlapped, and both ends thereof swell up to prevent the poor film from being pressed.

In addition, as shown in (b) of FIG. 10, the zigzag winding is rolled up in an overlapping manner as it moves inward and then comes back inward, so that the swinging portion of the guide roll 89 is easily reduced while the overlapping portion is considerably reduced. It is almost a straight line in the wound width direction as shown in FIG.

On the other hand, when slitting with a laser, foreign matter, in particular a laser fume, is fused to or near the slit surface.

By scrubbing this fused fume, the cleaner size is made compact, which facilitates the installation and operation of the equipment and improves the performance of the cleaner.

It is preferable that the cleaner 70 of this embodiment shown in FIG. 11 is mounted on the cleaner bracket 79 provided in the main body of the laser slitter 30.

The cleaner 10 includes the cloth 71 which touches the foreign material, the cloth unwinding roll 73 which unwinded the cloth 71 in roll shape, and the cloth winding roll 75 which winds up the cloth 71 again in roll shape.

At this time, the winding conveyance direction of the cloth 71 is disposed opposite to the winding conveyance direction of the slit films 3a to 3c, thereby enhancing the rubbing effect.

In addition, the cloth winding roll 75 is equipped with a servo motor (not shown) to perform winding (of course, the tension can be adjusted according to the rotational speed).

In addition, it is preferable that the ceiling force roll 77 for applying tension to the cloth 71 is mounted on the cleaner bracket 79.

At this time, the cloth winding roll 78, the cloth winding roll 73 and the ceiling force roll 77 are arranged in the order of the feeding direction of the slit films 3a to 3c, the cloth winding roll 78 is the ceiling force roll 77 It is preferable that the inclined cloth 71 between the ceiling roll 77 and the cloth winding roll 75 rubs the foreign matter. Inclination can be adjusted through the height of the ceiling force roll (77).

Since the slanted cloth 71 is gradually rubbed in line contact with the film of the guide roll R3, the removal rate is hardly increased with little resistance to the film transfer, and the film does not touch the film in any part other than the fume. To prevent damage to the source.

On the other hand, it is preferable to forcibly drive the guide rolls as a way to drive the film instead of the nip rollers (rising nip roll and fixed drive roll). This is because the elevating nip roll is not likely to be pressed evenly due to the error of the roll itself or the thickness of the film, which may cause a phenomenon (meaning) of being pushed to the pressed part more. In addition, the nip rollers are cumbersome in that gap adjustment with the driving rolls is required.

In order to solve this, the forced driving of the guide roll may be implemented by forcibly driving the first guide roll by the power transmission member and secondly driving the guide roll itself by the frictional force using a large coefficient of friction.

As shown in Figs. 12 and 13, the film transfer mechanism includes a driving roll (DGR) for driving and feeding the optical film (or slit film), and a plurality of guide rolls (R1 to guiding the optical film (or slit film)). R4) and a power transmission member for transmitting the rotational force of the drive roll (DGR).

Because of this power transmission member, the guide rolls R1 to R4 also function as a driving roll for driving and feeding the optical film (slit film), so that the transfer can be performed without a nip roll.

The power transmission member is a timing belt (TV1) (TV2) connecting the timing pulley (not shown) of the motor (M) for driving the drive roll (DGR) and the timing pulleys (TP1 to TP4) of the guide rolls (R1 to R4). It is preferable that it consists of.

The timing belt TV1 and TV2 transmit the rotational force of the driving roll DGR to the second guide roll R2, the third guide roll R3, and the fourth guide roll R4. And a second timing belt TV2 for transmitting the rotational force of the fourth guide roll R4 to the first guide roll R1.

Here, the timing pulley TP4 is provided with two TP4 'and TP4' on one rotation shaft of the guide roll R4, and the first timing belt TV1 and the second timing belt TV2 are engaged.

Such a belt link system does not need to adjust a gap according to the thickness of the film while implementing a function of blocking tension along with the rotational force of the motor M.

Meanwhile, the guide rolls (R1 to R4) or the driving rolls (DGR) of the film transfer mechanism are made of a material with a large coefficient of friction with the film, so that the friction force with the film is increased, thereby forcibly driving the feed instead of the nip roll. Can also be realized.

For example, the guide rolls R1 to R4 or the driving roll DGR may be implemented by rubber rolls, or the outer circumferential surface thereof may be covered or coated with a rubber material.

Due to the belt link method or the friction force increasing method, there is an advantage such as preventing the occurrence of meandering and no gap adjustment without using the nip roll. In addition, the lifting device of the nip roll is expensive and complicated, and the space occupied by the system of the nip roll and the lifting device is also reduced.

The optical film slitting process of this embodiment configured as described above is as follows.

As shown in FIG. 3, the optical film slitting process is mainly performed by unwinding the optical film 1 from the disc roll 11 and unwinding the optical film 1. Laser slitting process for trimming and slitting with a plurality of slit films 3a to 3c and trim film 5, a trimming process for discharging trim film 5, and a slit film 3a to 3c ), And a cleaning step of removing the foreign matter adhering to the < RTI ID = 0.0 >), < / RTI > and a winding step of winding the slit films 3a to 3c from which the foreign matter has been removed on each of the winding rolls 51a to 51c.

At this time, through the edge position control (EPC) process for controlling the edge position of the optical film 1 to be unwound before the slitting is transferred straight to the laser slitting process to ensure quality improvement during slitting.

Further, the center position control (CPC) step of controlling the center position of each of the slit films 3a to 3c transferred in the cleaning process is performed so that the slit films 3a to 3c are stably applied to the take-up rolls 51a to 51c. It is odor and improves product quality.

On the other hand, the trim treatment process is made of a trim film conveyor process for transporting and discharging the trim film 1 to be cut into the basket (9).

Due to this trim film conveyor process, the trim film 5 can be automatically processed to improve productivity.

The trim film conveyor process includes a trim film transfer process for transferring the trim film 5 to the horizontal conveyor 61 and a trim film 5 transferred from the horizontal conveyor 61 to an inclined conveyor 63. The process of discharging the trim film to be transported and discharged into the basket 9 may increase the collection capacity of the trim film.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below Can be carried out.

The CPC sensor of the present invention can be applied to any roll-to-roll equipment that is rolled up by slitting.

1: Optical film 3a ~ 3c: Slit film
4: Pipe 4a: Pipe Bracket
5: trim film 7: discharge roller
8: CPC System 8a: Projector
8b: Detector 9: Basket (garbage box)
10: unwinder 11: disc roll
20: EPC system 30: laser slitter
31 laser oscillator 32 reflector
33: slit head 34: trim head
35 anti-vibration contact member 36 upper roll
37: lower roll 38: roll bracket
40: laser dust collector 41: suction box
43: dust box 45: piping
45a: Lower piping 45b: Upper piping
45c: intermediate slope piping 47: piping bracket
47a: Horizontal piping bracket 47b: Vertical piping bracket
50a-50c: Winding machine 51a-51c: Winding roll
60: trim processor (trim film conveyor) 61: trim film horizontal conveyor
63: Trim Film Incline Conveyor 70: Cleaner
71: cloth 73: cloth rolls
75: cloth winding roll 77: ceiling force roll
79: cleaner bracket 80: CPC system
81: CPC sensor 81a: projector
81b: detector 82a: light emitting unit
82b: light receiver 83: controller
85: driving cylinder 89: guide roll
90,190: mixed air volume control unit 91,191: touch roll
93,193: Touch roll moving part 95,195: Pressure, Incident angle control part
180: swing member 185: swing driving cylinder
A: unwind nip roller B: unwind feed nip roller
C1 ~ 3: 1 ~ 3 winding feed nip roller a: Unwinding section
b: unwind feed section c1 ~ c3: 1-3 feed section
d1 ~ d3: 1 ~ 3 winding section

Claims (8)

A take-up machine in which a disc roll of the optical film is installed;
A laser slitter that trims and slits the optical film unwound from the unwinder in a transport direction and cuts the slits into a plurality of slit films and trim films;
A center position control (CPC) system for controlling the center position of each slit film;
Each of the slit film that controls the center position includes a plurality of winding machines wound on a winding roll,
The CPC system includes a CPC sensor disposed at an upper portion and a lower portion of the slit film, a controller that receives whether the center of the slit film is separated from the CPC sensor, and a guide roll driven by the controller to guide the slit film. Including a drive cylinder to adjust the position of,
Wherein each of the CPC sensors is formed longer than the width of the slit film.
The method of claim 1,
The CPC sensor is composed of a projector having a light emitting unit disposed below the slit film, and a detector having a light receiving unit disposed above the slit film.
And the light receiving portion and the light emitting portion are mounted with a long width in the width direction.
The method of claim 2,
And the guide roll is swingable with respect to the center of the width direction of the slit film by the drive cylinder.
4. The method according to any one of claims 1 to 3,
Further comprising a laser dust collector for collecting the gas generated during the cutting of the optical film,
The laser dust collector is composed of a suction box, a dust collecting box, a pipe connecting the suction box and the dust collecting box,
The pipe is optical film laser slitting system disposed to be inclined so as to secure the path of the laser beam reflected from the oscillator of the laser slitter and reflected on the reflector.
The method of claim 4, wherein
The pipe is an optical film laser slitting consisting of a lower pipe, one end of which is connected to the suction box, an upper pipe of which the other end is connected to the dust collecting box, and an intermediate slope pipe that connects the other end of the lower pipe and one end of the upper pipe. system.
The method of claim 5,
The pipe is supported by a pipe bracket fixed on the laser slitter,
The pipe bracket is an optical film laser slitting system consisting of a vertical pipe bracket for supporting the upper pipe and a vertical pipe bracket which is fixed on the laser slitter extending downward from one end of the horizontal pipe bracket.
The method of claim 4, wherein
The pipe is PVC optical film laser slitting system.
The method of claim 4, wherein
The pipe is an optical film laser slitting system made of a metal material coated plastic.

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