KR20100036069A - Laser nozzle apparatus for cutting polaroid film - Google Patents

Abstract

PURPOSE: A laser nozzle apparatus for cutting a polarized film is provided to prevent contaminations due to the combustion gas dust of the polarized film cut surface by absorbing and removing combustion gas when the polarized film is cut. CONSTITUTION: A laser nozzle apparatus for cutting a polarized film comprises an upper laser nozzle(220), a laser beam projection lens(230), a lens fixing ring(240), and a lower laser nozzle(250). The upper part of an upper laser nozzle is wide and the lower part is narrow. A first beam projection hole(222a) passes through the top and the bottom of the top laser nozzle. The laser beam projection lens is mounted on a lens mounting sill(228) of the top laser nozzle in order to project the reflected laser beam. The lens fixing ring fixes the laser beam projection lens mounted on the lens mounting sill. The lower laser nozzle comprises a processing gas injection port(258).

Description

Laser nozzle apparatus for cutting polaroid film

The present invention relates to a laser nozzle device for cutting a polarizing film, and more particularly, to form a roll laser nozzle in a double, the projection of the laser beam to the polarizing film can be made in the middle of the injection of the working gas through the laser nozzle of the dual structure. The present invention relates to a laser nozzle device for cutting a polarizing film, which enables the cutting surface of the polarizing film to be cut at a right angle, and also prevents oxidation of the combustible material (polarizing film and protective film) by the projected laser beam. .

In general, as much attention has been paid to the increase in size and quality of display devices as a medium for transmitting image information, it is noted that various flat panel display devices have been developed and disseminated in place of CRT (Cathode Ray Tube), which has been used until now. same. One of the flat panel display devices, the liquid crystal display device has developed far beyond the CRT in terms of image quality and color, and has become a main product dominating the world market.

The general manufacturing process of the general TFT-LCD panel (Thin Film Transistor Liquid Crystal Display Panel) constituting the liquid crystal display device as described above is as follows. First, as an overview, one pixel (comprising three subpixels R, G, and B) of a TFT-LCD panel is as fine as about 0.3 mm in width. Of course, the TFT (Thin Film Transistor) that fits in it is smaller. Furthermore, to reach a resolution of 1600 x 1200, the number of pixels is 1.19 million, which requires 3 times (R, G, B), considering each sub-pixel, and requires 576 million TFTs. Therefore, a semiconductor level process is required as a process that requires high precision of the entire process itself.

Meanwhile, the manufacturing process of the TFT-LCD panel as described above is largely divided into a TFT process, a color filter (CF) process, a cell process, and a module process, and has two glasses that have undergone a TFT process and a CF process. One panel is made through a cell process, and a panel processed through a cell process is made through a module process, and a TFT-LCD panel that is actually used for a monitor or a TV is made.

First, the TFT (Thin Film Transistor) process is a process of forming a basic electrode, which makes the electrode of each cell the most basic and essential process. The process sequence includes five steps of gate electrode generation, insulating film and semiconductor film generation, data electrode generation, protective film generation, and pixel electrode generation, but at least one pattern process is required for each step. This pattern process can be called the core of the TFT-LCD panel manufacturing process. Similar pattern processes are required for the CF process as well as the TFT process.

The pattern process as described above is a very precise and complicated process by itself. At least this process is performed several times to make a single TFT-LCD panel. Of course, the same process is not used then, but the schematic process is similar. This pattern process consists of deposition, cleaning, photoresist (PR) coating, exposure, development, etching (PR) process, PR stripping (Strip process), and inspection process. This is necessary.

TFT-LCD, on the other hand, does not emit light on its own like PDP or OLED (organic EL), but controls the brightness of light by controlling the arrangement of liquid crystals in each cell for constant light from the backlight. Since the backlight itself is white light, CF (Color Filter) plays an important role in changing the arrangement of liquid crystals to control the amount of light, but to make R, G, and B to realize color. This CF is located on the top of the TFT-LCD panel and is made through a process separate from the TFT process. The CF process also requires the pattern process described above.

The above-described CF (Color Filter) process requires a BM (Black Matrix) process (deposition, cleaning, PR coating, exposure, development, etching, and peeling pattern process), and pixel-by-pixel process (this pattern process was performed as described above. It is a slightly different process from the process of evaporation and cleaning without the need for the deposition and cleaning process, by applying a color-sensitive photosensitive material to the process of exposure and development) and the ITO process (Indium Tin Oxide: good permeability and conductivity, chemical and thermal stability Excellent transparent electrode material). In addition, some additional processes may be added depending on the type of panel (VA, IPS, TN, etc.).

In addition, the Cell process is a process of combining and cutting two glasses made in the CF process and the TFT process into one, and cleaning the CF and TFT, polyamide printing, rubbing process, spacer scattering, and bonding. (TFT substrate and CF substrate are precisely bonded), cutting (the bonded substrate is cut and separated into respective panels), liquid crystal injection, and final inspection.

The module process in the above-described TFT-LCD panel manufacturing process is a final step for attaching a polarizing film (or a polarizing plate), a PCB, a backlight device, etc. to a panel made of a cell process as a final process for making a finished product panel. , Polarizer film attachment, TAB attachment, autoclave, PCB attachment, BLU (Back Light Unit) assembly, and inspection.

In the above-described module process, the polarizing film attached to the upper and lower parts of the panel has a function of making the incident light while vibrating in various directions to be light that vibrates only in one direction (that is, polarization). The polarizing film is usually attached to cross 90 degrees. In this case, a protective film for protecting the polarizing film is attached to each of the upper and lower surfaces of the polarizing film. In order to attach the polarizing film to the upper and lower surfaces of the panel, the protective film on the upper and lower surfaces of the polarizing film is first applied. After removal, it should be attached to the top and bottom of the panel.

On the other hand, the polarizing film (Polaroid Film) refers to a film having a property that can pass or block the vertical or horizontal polarization of the incident light, thin film transistor liquid crystal display device (TFT-LCD) such as notebook computers and monitors And optical films used for camera special effects filters and stereoscopic glasses. Although the intensity of light emitted from the backlight of the LCD module is equal in all directions, the polarizing film transmits only the light oscillating in the same direction as the polarization axis, and absorbs or reflects the other light to create polarization in a specific direction. Do it. When the polarization passes the LCD liquid crystal, the brightness of the pixel is changed by electrically adjusting the alignment direction of the liquid crystal for each pixel.

In order to attach the polarizing film to the upper and lower surfaces of the panel, the polarizing film is subjected to a process of cutting the polarizing film into a polarizing plate having a predetermined size so as to correspond to the size of the panel. The mechanical cutter is used to cut the polarizing film to correspond to the size of the panel.

Therefore, in the case of the polarizing film cutting device according to the prior art as described above, since a large amount of dust is generated in the process of cutting the polarizing film through the shooter cutter, a separate treatment process for treating the generated dust is required. do. Since a separate dust treatment process is required as described above, the production cost increases considerably and the yield decreases due to the occurrence of environmental treatment costs.

In addition, in the case of the polarizing film cutting device according to the prior art as described above, if the polarizing film is cut through the shooter cutter, the cutting surface of the polarizing film is not uniform, requiring a polishing process to uniformly polish the cutting surface of the polarizing film. As a result, the additional process causes problems such as an increase in production cost and a decrease in production volume.

In order to solve the above problems, a cutting system using a laser has been developed and commercialized. The laser nozzle according to the prior art constituting a laser device for cutting a polarizing film in the configuration of the cutting system using such a laser is When cutting through the polarizing film there is a problem that the cut surface of the polarizing film 10 is not cut at a right angle as shown in Figures 1a to 1c. That is, there exists a problem that cutting quality falls.

In addition, the contamination generated around the cut surface of the polarizing film 10 by the combustion gas generated when cutting through the laser beam, as well as the problem that the separation of the protective film 20 on the polarizing film is difficult to be generated. .

The present invention has been made to solve the above-mentioned problems of the prior art, the dual configuration of the laser nozzle of the laser device for cutting the polarizing film in the configuration of the polarizing film cutting system using an automated laser It is an object of the present invention to provide a laser nozzle device for cutting a polarizing film that allows the laser beam to be projected while the working gas is sprayed through the nozzle so that the cut surface of the polarizing film can be cut at right angles.

Another object of the technique according to the present invention is to polarize the laser nozzle of the laser device for cutting the polarizing film to form a structure that can remove the combustion gas during the cutting of the polarizing film through the projection of the laser beam, the polarization In order to prevent contamination by combustion gas dust on the cut surface of the film.

Another object of the technology according to the present invention is to configure a laser nozzle of the laser device for cutting the polarizing film in a double, but the polarizing film to be projected while the laser beam is projected while the injection of the working gas through the dual-layer laser nozzle By allowing the cut surface of the to be cut at a right angle so that the protective film to protect the polarizing film is not fused to the polarizing film to facilitate separation separation.

In addition, the technology according to the present invention comprises a double laser nozzle of the laser device for cutting the polarizing film, but the laser beam can be projected in the middle of the injection of the working gas through the laser nozzle of the dual structure by the laser beam The purpose is to prevent oxidation of the combustible materials (polarizing film and protective film).

The present invention configured to achieve the above object is as follows. That is, the laser nozzle device for cutting a polarizing film according to the present invention is a laser nozzle device for cutting a polarizing film for projecting the laser beam reflected vertically downward through the laser reflector is installed on one side of the transfer line is oscillated. In the upper part is wide and the lower part is made of a wedge shape of the narrow shape is coupled to the lower portion of the laser nozzle body through the screw coupling, the first beam projection hole is formed through the upper and lower through the bottom so that the laser beam is projected to form a lower wedge shaped agent The first beam projection unit, the screw coupling portion formed on the outer circumferential surface of the first beam projection portion, the ring coupling portion forming the upper portion of the first beam projection hole and the lens mounting jaw formed on the boundary portion of the first beam projection hole and the ring coupling portion An upper laser nozzle; A laser beam projection lens mounted on the lens seating jaw of the upper laser nozzle to project a vertically reflected laser beam; A lens fixing ring coupled to the ring coupling part by screwing to fix the laser beam projection lens seated on the lens seating jaw; And a second beam projection part which is formed to penetrate up and down on the same vertical line in correspondence with the first beam projection hole of the upper laser nozzle, but is formed in a wedge shape that becomes narrower toward the lower portion. The nut coupling portion formed on the inner circumferential surface of the upper side of the projection hole and coupled to the screw coupling portion by the screw coupling portion of the first beam projection portion, the cross-sectional shape is formed in the form of an inverted triangle on the nucleus coupling portion and the second beam projection hole. It consists of a configuration including a lower laser nozzle made of a work gas injection hole penetrated in and out in the lateral direction so that the work gas is supplied to the space portion and the space portion.

In the configuration according to the present invention as described above, the space portion of the lower laser nozzle is formed larger than the first beam projection portion of the upper laser nozzle so that the outer circumferential surface and space of the first beam projection portion when the lower laser nozzle is coupled to the lower portion of the upper laser nozzle Between the inner circumferential surface of the negative may be combined in a spaced apart configuration.

On the other hand, the laser nozzle device may further comprise a combustion gas suction means for suctioning off the combustion gas generated during laser cutting of the polarizing film. At this time, the combustion gas suction means is a combustion gas suction pipe is installed at a lower predetermined distance on the same vertical line of the lower laser nozzle to suck the combustion gas generated when the laser cutting of the polarizing film; And a suction pump connected to the combustion gas suction pipe to generate a suction pressure.

According to the present invention, the laser nozzle of the laser device for cutting the polarizing film in the configuration of the polarizing film cutting system using an automated laser, but the dual configuration of the laser beam is projected while the injection of the working gas through the laser nozzle of the dual structure By making it possible, the cut surface of the polarizing film can be cut at right angles.

Another effect of the technology according to the present invention is to polarize the laser nozzle of the laser device for cutting the polarizing film to form a structure that can remove the combustion gas during the cutting of the polarizing film through the projection of the laser beam to the polarization The contamination by the combustion gas dust on the film cut surface can be prevented.

Another effect of the technique according to the present invention is to configure the laser nozzle of the laser device for cutting the polarizing film in a double polarized light so that the laser beam can be projected in the middle of the injection of the working gas through the laser nozzle of the dual structure By allowing the cut surface of the film to be cut at right angles, the protective film protecting the polarizing film may not be fused to the polarizing film, thereby facilitating separation.

In addition, the technology according to the present invention comprises a double laser nozzle of the laser device for cutting the polarizing film, but the laser beam can be projected in the middle of the injection of the working gas through the laser nozzle of the dual structure by the laser beam Oxidation of the combustible materials (polarizing film and protective film) can be prevented.

Hereinafter, a laser nozzle device for cutting a polarizing film of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a plan view showing the overall configuration of a polarizing film (POL) cutting device using a laser to which a laser nozzle for cutting a polarizing film according to the present invention, Figure 3 is a laser to which a laser nozzle for cutting a polarizing film according to the present invention is applied Side configuration diagram showing the overall configuration of the polarizing film (POL) cutting device using, Figure 4 is a side configuration diagram showing an enlarged laser cutting apparatus to which the laser nozzle for cutting a polarizing film according to the present invention.

Referring to the configuration of the polarizing film (POL) cutting system 100 using a laser to which the polarizing film adsorption device 14 according to the present invention is applied as shown in FIGS. 2 to 4 5, the polarizing film 10 wound in a roll state Winding device 110, the polarizing film 10 supplied through the winder device 110 to be rotated by a plurality of rollers to support the rotatable to be continuously released in the middle curling Polarizing film conveying device for conveying the flattened polarizing film 10 in the flat plate through the dancing roller device 120, the dancing roller device 120 to flatten the polarizing film 10 ( 130), the polarizing film is fixed by vacuum adsorption fixed by the polarizing film adsorption device 140, the polarizing film adsorption device 140 for fixing the polarizing film 10 transferred through the polarizing film transfer device 130 through vacuum adsorption 10 of lasers Laser device 150 to cut through the polarizing plate 20 to form a polarizing plate 20, the polarizing plate discharge device 160 and the polarizing plate discharge to discharge the polarizing plate 20 cut to a predetermined size through the laser device 150 on the rear-side horizontal plane It consists of a configuration of the polarizing plate alignment device 170 for laminating and arranging the polarizing plate 20 transferred to the rear side on the transfer line through the device 160.

Looking at the transfer process of the polarizing film 10 through the polarizing film cutting system 100 using the laser applied to the present invention configured as described above, first, rotating the polarizing film 10 in the roll state to the winder device 110 When coupled to the polarizing film feeder 130 via the dancing roller device 120 in the coupled state, and then transferred through the drive of the polarizing film feeder 130, the polarization of the roll state coupled to the winder device 110 The film 10 is unrolled while the polarizing film 10 in the curled state is flattened while passing through the dancing roller device 120.

On the other hand, as described above, the polarizing film 10 is flattened through the dancing roller device 120 to a control controller (not shown) that controls the entire cutting system 100 through the polarizing film transfer device 130. After being transferred to the set size and guided to the polarizing film adsorption device 140, the transport of the polarizing film 10 is stopped, and the polarizing film adsorption device 140 vacuums the polarizing film 10 positioned thereon. Fixed by adsorption. That is, while the polarizing film 10 is fixed by the polarizing film adsorption device 140, the transfer of the polarizing film 10 is stopped.

As described above, when the polarizing film 10 is fixed to the upper portion of the polarizing film adsorption device 140 by vacuum adsorption, the laser device 150 is driven to cut the polarizing film 10 to a predetermined size. That is, the laser device 150 cuts the polarizing film 10 to a predetermined size and forms the polarizing plate 20. After forming the polarizing plate 20 by cutting the polarizing film 10 as described above, vacuum adsorption of the polarizing film 10 and the polarizing plate 20 is released and at the same time, air is discharged from the polarizing film adsorption device 140. Then, the polarizing film 10 and the polarizing plate 20 are floated (floating) to facilitate the transfer of the polarizing film 10 and the polarizing plate 20.

Next, as described above, the polarizing film 10 and the polarizing plate 20 are floated by air discharged from the polarizing film adsorption device 140, and the polarizing film transporting device 130 and the polarizing plate are in a floating state. When the discharge device 160 is driven, the polarizing film 20 is discharged by the polarizing plate discharge device 160 and the polarizing film 10 is transferred to the polarizing film adsorption device 140 by the polarizing film transfer device 130. Are transferred. In this case, the polarizing film transporting device 130 and the polarizing plate discharging device 160 for transporting the polarizing film 10 and the polarizing plate 20 are driven at the same speed and are transported in the same direction. Do not cause interference.

As described above, when the polarizing film 10 and the polarizing plate 20 are transferred by the driving of the polarizing film conveying device 130 and the polarizing plate discharging device 160, the polarizing plate 20 is formed by the polarizing plate discharging device 160. The transfer is aligned with the polarizing plate aligning device 170, the polarizing film 10 is transferred by the polarizing film transfer device 130 at the same speed as the polarizing plate 20 is transferred to the polarizing film adsorption device (140). Therefore, the cutting of the polarizing film 10 by the laser device 150 can be seen that the transfer of the polarizing film 10 and the polarizing plate 20 is made at the same time.

Next, a laser nozzle device for cutting a polarizing film using a laser as described above will be described in detail. 5 is a cross-sectional view showing a laser nozzle for cutting a polarizing film according to the present invention, Figure 6 is a cross-sectional view showing the cutting of a polarizing film through a laser nozzle for cutting a polarizing film according to the present invention.

The laser nozzle device 200 as shown in FIGS. 5 and 6 is for projecting a laser beam onto the polarizing film 10 to cut the polarizing film 10 fixed on the polarizing film adsorption device 140. As such, the laser nozzle device 200 is installed on the lower side of the laser housing 152 of the laser device 150 to reflect the laser beam vertically downward by the reflector (not shown) on the polarizing film 10. Projected onto and cut.

The laser nozzle apparatus 200 according to the present invention as described above is coupled to the lower portion of the laser nozzle body 210 as shown in Figs. 5 and 6, the injection of the working gas with the projection of the laser beam is It is made of a structure that can be done at the same time.

The laser nozzle device 200 according to the present invention will be described in more detail. The upper portion of the upper portion is wide and the lower portion is made of a wedge shape having a narrow shape. The upper portion of the laser nozzle 220 is coupled to the lower portion of the laser nozzle body 210 by screwing. The laser beam projection lens 230 mounted inside the upper laser nozzle 220 to project the vertically reflected laser beam, and the laser beam projection lens 230 mounted inside the upper laser nozzle 220. In the configuration of the lower laser nozzle 250 is coupled to the rear of the lens fixing ring 240 and the upper laser nozzle 220 for fixing through a screw coupling to project the laser beam vertically downward through the upper laser nozzle 220. Is done.

Meanwhile, as described above, between the upper laser nozzle 220 and the lower laser nozzle 250 of the laser nozzle apparatus 200 according to the present invention having a dual structure of the upper laser nozzle 220 and the lower laser nozzle 150. Supply of the working gas is made of a configuration that allows the cutting of the polarizing film (10).

Referring to the technique according to the present invention in more detail, first, as shown in FIGS. 5 and 6, the first laser projection hole 222a is formed to penetrate up and down so that the laser beam is projected. Wedge-shaped first beam projection 222, the screw coupling portion 224 formed on the outer circumferential surface of the first beam projection 222, the ring coupling forming an upper portion of the first beam projection hole 222a The lens mounting jaw 228 is formed at a boundary between the portion 226 and the first beam projection hole 222a and the ring coupling portion 226. At this time, the upper laser nozzle 220 has a wide upper portion and a narrow wedge shape is screwed through the ring coupling portion 226 to the lower portion of the laser nozzle body 210.

In the configuration of the upper laser nozzle 200 as described above, the first beam projection hole 222a is formed to penetrate up and down in the form of gradually narrowing from the top to the bottom of the center of the upper laser nozzle 220. In this case, a lens seating jaw 228 in which the laser beam projection lens 230 is seated is formed on the upper portion of the first beam projection hole 222a, and the lens fixing ring is further extended to the upper part of the lens seating jaw 228. A threaded ring engaging portion 226 is formed on the inner circumferential surface so that the 240 may be screwed. In addition, the upper laser nozzle 220 as described above has a structure in which the ring coupling portion 226, the lens seating jaw 228, and the first beam projection hole 222a are positioned on the same center line and penetrate up and down.

Meanwhile, in the configuration of the upper laser nozzle 220 as described above, the lower portion of the upper laser nozzle 220 in which the first beam projection hole 222a is formed is wide at the upper portion, and the lower portion is the first beam projection portion 222 having a narrow wedge shape. ) At this time, on the outer circumferential surface of the first beam projection unit 222 is formed a screw engaging portion 224 having a threaded structure for fixing the lower laser nozzle 250 to be described later.

The laser beam projection lens 230 constituting the present invention is a polarizing film of the laser beam reflected vertically downward through a laser beam reflector (not shown) installed inside the laser housing 152 of the laser device 150. The laser beam projection lens 230 is mounted on the lens mounting jaw 228 formed above the first beam projection hole 222a of the upper laser nozzle 220.

In addition, the lens fixing ring 240 constituting the present invention, the laser beam projection lens 230 is mounted on the lens seating jaw 228 formed above the first beam projection hole 222a of the upper laser nozzle 220. For fixing the laser beam projection lens 230, the outer circumferential surface of the lens fixing ring 240 is screwed with a screw thread corresponding to the thread formed on the inner circumferential surface of the ring coupling portion 226 of the upper laser nozzle 220 By being coupled on the ring coupling portion 226 through which the laser beam projection lens 230 mounted on the lens mounting jaw 228 is fixed.

In other words, the laser beam projection lens 230 mounted on the lens seating jaw 228 of the upper laser nozzle 220 is the laser beam projection lens 230 through the lens seating jaw 228 and the ring coupling part 226. Through the lens fixing ring 240 is coupled to the upper portion of the lens seating jaw 228 is fixed to the structure.

The lower laser nozzle 250 of the present invention has a second beam projection hole 252a which is formed to penetrate up and down on the same vertical line to correspond to the first beam projection hole 222a of the upper laser nozzle 210. However, a screw coupling part of the first beam projector 222 is formed on the inner circumferential surface of the upper side of the second beam projector 252 and the second beam projection hole 252a, which is formed in a wedge shape that becomes narrower toward the bottom. The nut coupling portion 254 coupled to the screw 224 through the screw coupling, the space portion 256 and the space formed in the form of an inverted triangle cross-section on the knuckle coupling portion 254 and the second beam projection hole 252a It consists of a work gas injection hole 258 penetrated in and out in the lateral direction so that the supply of the work gas on the part 256 is made. In this case, the lower laser nozzle 250 also has a wedge shape that narrows from the top to the bottom.

The lower laser nozzle 250 configured as described above has a second beam projection hole 252a narrowed toward the bottom at a lower inner center thereof, while a cross section is formed at an inner upper portion of the second beam projection hole 252a. The space portion 256 having an inverted triangle shape is formed, and the upper portion of the space portion 256 has a thread-shaped coupling portion formed on the inner circumferential surface corresponding to the screw coupling portion 224 of the upper laser nozzle 220 ( 254 is formed. At this time, the working gas injection hole 258 for supplying the external working gas to the space portion 256 side of the lower laser nozzle 250 is formed through the side.

Of course, the second beam projection hole 252a and the space portion 256 and the nut coupling portion 254 of the lower laser nozzle 250 configured as described above are positioned on the same vertical line as the center of the lower laser nozzle 250. . In addition, the second beam projection hole 252a of the lower laser nozzle 250, the space 256, and the nut coupling part 254 may include the ring coupling part 226 of the upper laser nozzle 220 and the lens mounting jaw ( 228 and the first beam projection hole 222a are positioned on a vertical line on the same center line.

Meanwhile, when the lower laser nozzle 250 configured as described above is coupled to the first beam projector 222 of the upper laser nozzle 220 by screwing, the space portion 256 of the lower laser nozzle 250 is It is formed larger than the first beam projector 222 of the upper laser nozzle 220, and the outer peripheral surface and space of the first beam projector 222 when the lower laser nozzle 250 is coupled to the lower portion of the upper laser nozzle 220 The inner circumferential surface of the unit 256 is coupled in a spaced apart configuration. This is to prevent the working gas injection hole 258 from being blocked by the first beam projector 222.

In addition, the laser nozzle apparatus 200 according to the present invention further includes combustion gas suction means for suctioning and removing combustion gas generated when laser cutting of the polarizing film 10, which is illustrated in FIG. 5. As described above, the combustion gas suction pipe 260 and the combustion gas suction pipe 260 are installed at a predetermined distance below the same vertical line of the lower laser nozzle 250 to suck and remove the combustion gas generated when laser cutting the polarizing film 10. And a suction pump 262 for generating a suction pressure.

Combustion gas suction means as described above is located on the same vertical line of the lower laser nozzle 250, but is located on the lower side of the polarizing film 10 to suck the combustion gas generated when cutting the polarizing film 10 to burn The dust by the gas is prevented from being contaminated around the cut surface of the polarizing film 10 is cut.

The laser nozzle apparatus 200 according to the present invention configured as described above seats the laser beam projection lens 230 on the lens seating jaw 228 of the upper laser nozzle 220 and then attaches the lens fixing ring 240. Screwing through the ring coupling column 226 to fix the laser beam projection lens 230 mounted on the lens seating jaw (228). After the lens laser beam projection lens 230 is fixed to the upper laser nozzle 220 as described above, the lower laser nozzle 250 is screwed to the screw engaging portion 224 on the outer circumferential surface of the first beam projector 222 to upper laser. The nozzle 220 and the lower laser nozzle 250 are configured to have a dual structure coupled up and down. In addition, when the upper and lower laser nozzles 220 and 250 coupled in a dual structure are coupled to the lower part of the nozzle body 210, the assembly is completed.

On the other hand, when cutting the polarizing film 10 through the laser nozzle device 20 according to the present invention having the structure as described above, the vertical lower portion through the laser beam reflector (not shown) inside the laser housing 152 The work gas is injected through the working gas injection hole 258 of the lower laser nozzle 250 while projecting the reflected laser beam to the upper surface of the polarizing film 10, and the lower laser nozzle through the space part 256. While being injected into the second beam projection hole 252a of 250, the laser beam is injected onto the laser cut surface of the polarizing film 10.

As described above, the work gas sprayed on the laser cut surface of the polarizing film 10 while the ray point beam is projected to the second beam projection hole 252a of the lower laser nozzle 250 is heated and melted by the laser beam. By discharging to the lower portion of the cut surface to clean the cut surface of the polarizing film 10, there is an advantage to improve the cutting quality of the polarizing film 10 by improving the squareness.

In addition, the laser nozzle device 20 according to the present invention having the structure as described above is the injection of the working gas while the ray point beam is projected through the second beam projection hole 252a of the lower laser nozzle 250 Simultaneously, the combustion gas may be suctioned, thereby preventing oxidation of the polarizing film 10 and the protective film 20 which are combustible materials.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

Figure 1a is an exemplary view showing the shape of the cut surface when cutting the polarizing film by a laser nozzle for cutting a polarizing film according to the prior art.

Figure 1b is another illustration showing the shape of the cut surface when cutting the polarizing film by a laser nozzle for cutting a polarizing film according to the prior art.

Figure 1c is another illustration showing the shape of the cut surface when cutting the polarizing film by a laser nozzle for cutting a polarizing film according to the prior art.

Figure 2 is a plan view showing the overall configuration of a polarizing film (POL) cutting device using a laser to which a laser nozzle for cutting a polarizing film according to the present invention.

Figure 3 is a side view showing the overall configuration of a polarizing film (POL) cutting device using a laser to which a laser nozzle for cutting polarizing film according to the present invention.

Figure 4 is an enlarged side view showing a laser cutting device to which a laser nozzle for cutting polarizing film according to the present invention is applied.

Figure 5 is a cross-sectional view showing a laser nozzle for cutting a polarizing film according to the present invention.

Figure 6 is a cross-sectional view showing the cutting of the polarizing film through a laser nozzle for cutting a polarizing film according to the present invention.

[Description of Symbols for Main Parts of Drawing]

100. Cutting device 110. Winder device

120. Dancing roller device 130. Polarizing film feeder

140. Polarizing film adsorption device 150. Laser cutting device

152. Housing 160. Polarizer Discharge Device

170. Polarizer Alignment Device 180. Polarizer Carrier

200. Laser nozzle device 210. Nozzle body

220. Upper laser nozzle 222. First beam projector

222a. First beam projection hole 224. Screw connection

226. Ring joint 228. Lens seating jaw

230. Laser Beam Toothed Lens 240. Lens Retaining Ring

250. Lower laser nozzle 252. Second beam projector

252a. 2nd beam projection hole 254. Nut coupling portion

256. Space section 258. Work gas injection hole

Claims (4)

In the laser nozzle device for cutting a polarizing film is installed on one side of the transfer line is oscillated to project a laser beam reflected vertically downward through the laser reflector on the polarizing film, The upper part is wide and the lower part is formed in the shape of a wedge, which is coupled to the lower part of the laser nozzle body by screwing. And a screw coupling portion formed on an outer circumferential surface of the first beam projection portion, a ring coupling portion forming an upper portion of the first beam projection hole, and a lens mounting jaw formed at a boundary portion of the first beam projection hole and the ring coupling portion. An upper laser nozzle; A laser beam projection lens mounted on the lens seating jaw of the upper laser nozzle to project a vertically reflected laser beam; A lens fixing ring coupled to the ring coupling part by a screw to fix the laser beam projection lens seated on the lens seating jaw; And A second beam projection part which is formed to penetrate up and down on the same vertical line to correspond to the first beam projection hole of the upper laser nozzle, and is formed in a wedge shape that gradually narrows toward the bottom; Nut coupling portion formed on the upper inner circumferential surface of the beam projection hole and coupled to the screw coupling portion of the first beam projection portion by screwing, the cross-sectional shape of the inverse triangle on the non-specific coupling portion and the second beam projection hole And a lower laser nozzle made of a working gas injection hole penetrating into and out of the lateral direction so that the working gas is supplied onto the space. According to claim 1, wherein the space portion of the lower laser nozzle is formed larger than the first beam projection portion of the upper laser nozzle and the outer peripheral surface and the space when the lower laser nozzle is coupled to the lower portion of the upper laser nozzle Laser nozzle device for cutting a polarizing film, characterized in that coupled between the inner peripheral surface of the portion spaced apart by a predetermined interval. The laser nozzle device of claim 1, wherein the laser nozzle device further comprises combustion gas suction means for suctioning and removing combustion gas generated during laser cutting of the polarizing film. According to claim 3, wherein the combustion gas suction means is a combustion gas suction pipe which is installed at a lower predetermined distance on the same vertical line of the lower laser nozzle to remove the combustion gas generated during laser cutting of the polarizing film; And Laser nozzle device for cutting a polarizing film, characterized in that the combustion gas suction pipe is connected to generate a suction (Suction) to generate a suction pressure.

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