KR20060091849A - CO2 laser device for light guide plate processing - Google Patents

Abstract

The present invention relates to a light guide plate processing CO ₂ laser device, the light guide plate processing CO ₂ laser device according to the invention, installed in a horizontal direction of two CO ₂ laser generating such that the laser beam is oscillated to the outside device and the laser generated Each of the first reflection mirrors reflecting the laser beam oscillated from the apparatus at right angles to the front horizontal direction, the second reflection mirrors reflecting the laser beams reflected from the first reflection mirror at right angles in the horizontal direction, and the first reflection mirror. 2, and the reflection mirror is mounted on the upper left and right upper ends, respectively, a guide rail for connecting the left and right to each other to be transferred to the left and right, the front and rear conveying means for moving the guide rail back and forth, the transfer unit coupled to the guide rail and left and right, Each third installed in the conveying unit to reflect the laser beam reflected from the second reflecting mirror vertically downward; A reflection mirror, a laser head mounted on the transfer part and installed under the third reflection mirror to irradiate a laser beam reflected from the third reflection mirror on the light guide plate, and to move the transfer part from side to side. And a control unit for controlling oscillation of the means and the laser beam of the laser generating device, transfer of the front and rear transfer means, and transfer of the left and right transfer means, respectively.

Accordingly, the present invention is easy to process by cutting with a laser, not processing by printing or notch, it is possible to mass production by doubling the work efficiency to secure price competitiveness, reduce the defective rate, 20 inches It can be applied to the above light guide plate, which is not only suitable for the large screen, but also can improve the uniformity and brightness, and thus has the advantage of contributing to obtaining a high quality screen.

Light guide plate, CO2 laser, cutting, guide rail, conveying means

Description

CO2 laser device for processing light guide plate {CO2 Laser Apparatus for Manufacturing Light Guide Panel}

1 is a perspective view showing a schematic structure of a CO ₂ laser device for manufacturing a light guide plate according to the present invention.

Figure 2 is a perspective view showing the front and rear transfer means of the CO ₂ laser apparatus for manufacturing a light guide plate according to the present invention.

Figure 3 is a perspective view showing the left and right transfer means of the CO ₂ laser apparatus for manufacturing a light guide plate according to the present invention.

Figure 4 is a perspective view showing the operating state of the CO ₂ laser apparatus for manufacturing a light guide plate according to the present invention.

** Description of the symbols for the main parts of the drawings **

10: laser generator 20: the first reflection mirror

30: second reflection mirror 40: third reflection mirror

50: guide rail 60: front and rear transfer means

61: lead screw 62: drive motor

63: coupling portion 70: transfer portion

80: left and right transfer means 81a: gear

81: belt 82a: gear

82: pulley 83: belt drive motor

90: laser head 100: control unit

110: light guide plate 120: table

130: protective tube

The present invention relates to a light guide plate for producing CO ₂ laser device, and more particularly, by using a CO ₂ laser light guide plate which is processed with a pattern in the light guide plate used in the panel of the LCD, such as to be equal to the luminance of the entire light guide plate for processing CO ₂ It relates to a laser device.

As the types of electronic communication products are diversified, the size of LCD panels is also diversified. The light guide plate constituting a part of the LCD panel currently uses a transparent acrylic plate and forms patterns on the surface by various methods so that the brightness of the entire light guide plate is the same so that the brightness of the entire screen is evenly distributed. As a method of forming a pattern on the surface of the light guide plate, a printing method, a cutting method for forming a V-notch, and a processing method using a laser are used.

The printing method is used for medium to large sized light guide plates used in medium or large LCD panels, but this printing method is used as a corrosion solution for masking a portion which will not form a pattern and forming a pattern by a printing method thereon. The printed part is corroded to form a pattern. In this process, a corrosion agent for forming a pattern penetrates between a mask, which is a masked part, and a light guide plate surface of the lower part of the mask, so that a pattern cannot be formed and a defect occurs. Therefore, a skilled worker must work, and the pattern is formed unevenly. There was a problem that the luminance was low.

The cutting method of forming V-notch is mechanical cutting with V-type cutter, which has long processing time, low production efficiency, and simple control direction of cutter, which is suitable for simple pattern formation, It was difficult to form a pattern.

As a result of the above problems, a pattern forming method by laser processing is currently preferred. The conventional laser processing machine for forming patterns on the light guide plate is a general-purpose laser processing machine, which can process only one light guide plate in one device, and thus forms a pattern on the light guide plate. Low, there was a disadvantage not suitable for mass production.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention can not only form a light guide plate having a variety of patterns, but also can double the work efficiency to increase the production efficiency To provide a CO ₂ laser apparatus for manufacturing a light guide plate suitable for mass production.

In addition, another object of the present invention is to provide a CO ₂ laser device for manufacturing a light guide plate that can be applied to a light guide plate of 20 inches or more, not only suitable for a large screen, but also can improve the uniformity and brightness to contribute to obtaining a high quality screen. .

According to a feature of the present invention for achieving the above object, two CO ₂ laser generating device is installed in the horizontal direction so that the laser beam is oscillated to the outside, and the laser beam oscillated from the laser generator in front horizontal Each of the first reflecting mirrors reflecting at right angles in the direction, the second reflecting mirrors reflecting the laser beam reflected from the first reflecting mirror at right angles in the horizontal direction, and the second reflecting mirrors mounted on the left and right upper ends, respectively. And a guide rail for connecting the left and right to be transported to the left and right, the front and rear conveying means for moving the guide rail back and forth, a conveying unit coupled to the guide rail and conveyed to the left and right, and installed in the conveying unit and the second reflection. Each of the third reflecting mirrors reflecting the laser beam reflected from the mirror vertically and downwardly, A laser head installed under the third reflective mirror to irradiate the laser beam reflected from the third reflective mirror on the light guide plate, the left and right transfer means for moving the transfer part from side to side, and the laser beam of the laser generating apparatus. It characterized in that it consists of a control unit for controlling the oscillation, the transfer of the front and rear transfer means, and the transfer of the left and right transfer means.

The front and rear conveying means of the present invention, the lead screw installed in the front and rear direction at both ends of the guide rail, the drive motor for rotating the lead screw, and the coupling portion is coupled to the lead screw on both ends of the guide rail and transported to Characterized in that made.

The left and right conveying means of the present invention, characterized in that the belt is provided on the guide rail is formed with a gear, a pulley formed gear to mesh with the gear of the belt, and a belt driving motor for rotating the pulley. .

In addition, the present invention is characterized in that the protective tube is provided with a length adjustable in the path of the laser beam is reflected between each of the laser generating device, the first reflection mirror, the second reflection mirror and the third reflection mirror. It is done.

In addition, the second reflecting mirror of the present invention includes a reflecting mirror reflecting the laser beam reflected from the first reflecting mirror at a predetermined angle, and reflecting the laser beam reflected from the reflecting mirror into a third reflecting mirror. It is characterized by consisting of one reflective mirror.

Hereinafter, a CO ₂ laser apparatus for manufacturing a light guide plate according to the present invention as described above will be described in detail with reference to the accompanying drawings.

1 is to this and the invention perspective view showing a schematic structure of a light pipe for producing CO ₂ laser device according to, Figure 2 is a perspective view showing the front and rear transfer means of the light guide plate for producing CO ₂ laser device according to the invention, the invention Figure 3 is the and by a perspective view showing the left and right transporting means of the light guide plate for producing CO ₂ laser device, Figure 4 is a perspective view showing an operating state of the light guide plate for producing CO ₂ laser device according to the present invention.

As shown, the CO ₂ laser apparatus for manufacturing a light guide plate according to the present invention includes two CO ₂ laser generating apparatuses 10 installed in a horizontal direction to allow the laser beam to be oscillated outward, and from the laser generating apparatus 10. Each of the first reflecting mirror 20, the second reflecting mirror 30, and the third reflecting mirror 40 reflecting the oscillated laser beam, the guide rail 50 for transporting from side to side, and the guide rail ( Front and rear transfer means 60 for moving the front and rear, the transfer unit 70 coupled to the guide rail 50 and left and right, and the laser beam reflected from the third reflection mirror 40, the light guide plate 110 Each laser head 90 irradiated to an upper portion of the laser beam, the left and right transfer means 80 for moving the transfer part 70 left and right, and the laser generating device 10 and the front and rear transfer means 60 and the left and right transfer means. It consists of a control part 100 which controls each means 80.

The CO ₂ laser generating device 10 is a general-purpose laser is installed in each of the two laser heads 90 in the horizontal direction so as to output a laser beam is composed of two so that the laser beam is oscillated to the outside.

The first reflection mirror 20 is symmetrically spaced apart from the laser generator 10 by a predetermined distance so as to reflect the laser beam oscillated from the laser generator 10 at right angles to the front horizontal direction.

The second reflecting mirror 30 is symmetrically installed at both upper end portions of the guide rail 50 and moved by the front and rear movement of the guide rail 50 to reflect the laser beam from the first reflecting mirror 20. It serves to reflect at right angles to the inner horizontal direction.

The second reflective mirror 30 according to the present invention may be any type as long as the second reflective mirror 30 reflects the laser beam reflected from the first reflective mirror 20 in an inward horizontal direction, but the first reflective mirror 20 It is preferable that one reflection mirror reflects the laser beam reflected from the reflection mirror at a predetermined angle, and the other reflection mirror reflects the laser beam reflected from the reflection mirror to the third reflection mirror 40.

The guide rails 50 are symmetrically mounted on both upper ends of the second reflection mirrors 30, and the left and right are connected to each other, and the entire guide rails 50 are moved back and forth by the front and rear transfer means 60. It is supposed to move. The transfer unit 70 is coupled to the guide rail 50, and the transfer unit 70 is left and right transferred.

The front and rear transfer means 60 moves the entire guide rail 50 back and forth under the control of the controller 100 and controls the length of the pattern to be processed in the light guide plate 110. In this case, the light guide plate 110 is mounted on a fixed table 120 that is installed at the bottom of the CO ₂ laser device for manufacturing the light guide plate. The front and rear conveying means 60 is a lead screw 61 provided in the front and rear directions at both ends of the guide rail 50, a drive motor 62 for rotating the lead screw 61, and the guide rail 50 At both ends of the lower end of the coupling portion 63 is coupled to the lead screw 61 is conveyed. When the lead screw 61 is rotated by the rotation of the drive motor 62, the coupling portion 63 coupled to the lead screw 61 is moved back and forth along the lead screw 61, the guide The entire rail 50 is moved back and forth. The lead screw 61 of the front and rear transfer means 60 is symmetrically installed at both ends of the guide rail 50 to form a right angle with the guide rail 50.

The transfer unit 70 is coupled to the guide rail 50 to be moved left and right along the guide rail 50 under the control of the control unit 100. The transfer part 70 is provided with the laser head 90 installed below the third reflection mirror 40 and the third reflection mirror 40.

The third reflecting mirror 40 is installed in the transfer unit 70 so as to reflect the laser beam reflected from the second reflecting mirror 30 vertically downward.

The laser head 90 is installed in the transfer part 70 and is installed below the third reflective mirror 40 to irradiate a laser beam reflected from the third reflective mirror 40 to the upper part of the light guide plate 110. It plays a role. The laser head 90 is provided with a condenser lens (not shown) and a gas supply device (not shown), such as a general-purpose laser.

The left and right transfer means 80 transfers the transfer part 70 to the left and right, and serves to adjust the distance between the pattern to be processed in the light guide plate 110. The left and right conveying means 80 is installed on the guide rail 50, the belt 81 is formed with a tooth (81a) on the inside, the gear (82a) is formed so as to mesh with the tooth (81a) of the belt 81 It consists of a pulley 82, and a belt drive motor 83 for rotating the pulley (82). As described above, when the left and right transfer means 80 uses the belt 81 on which the gear 81a is formed and the pulley 82 on which the gear is formed, the left and right transfer means 80 facilitates movement control and forms various patterns. It can be formed. In the present invention, the transfer parts 70 are fixed to both ends of the belt 81, respectively, so that the transfer control can be performed by one belt driving motor 83.

The controller 100 controls the oscillation of the laser generation device 10, the transfer of the front and rear transfer means 60, and the transfer of the left and right transfer means 80, respectively, to be processed on the light guide plate 110. It controls the operation of each device by a predetermined program according to the type of. Although the control unit 100 is involved in the transfer control of the front and rear transfer means 60 and the left and right transfer means 80, it is configured to transfer the table 120 to the front, rear, left and right to transfer control the table 120. It's okay.

The present invention has a length in a path in which a laser beam between each of the laser generating device 10, the first reflection mirror 20, the second reflection mirror 30 and the third reflection mirror 40 is reflected. It is preferable that an adjustable protective tube 130 is provided.

As described above, according to the present invention, processing is easy by cutting by laser, not by printing or notching, and it is possible to mass production by doubling the work efficiency, to secure price competitiveness, and to reduce the defective rate. In addition, it can be applied to a light guide plate of 20 inches or more, which is not only suitable for a large screen, but also can improve uniformity and brightness, thereby contributing to obtaining high quality screen.

In addition, by installing the laser generating device in the horizontal direction it can reduce the space occupied, it is easy to install the light guide plate, there is an advantage that can create a safe working environment.

Claims (5)

Two CO ₂ laser generating apparatuses installed in the horizontal direction to oscillate the laser beam outward; Respective first reflection mirrors for reflecting the laser beam oscillated from the laser generating device at right angles in the horizontal direction; Respective second reflection mirrors for reflecting the laser beam reflected from the first reflection mirror at right angles in the horizontal direction; Guide rails configured to be mounted on the upper left and right upper ends of the second reflection mirrors and to be connected to each other and to be transferred to the left and right; Front and rear conveying means for moving the guide rail back and forth; A conveying part coupled to the guide rail and conveyed left and right; Respective third reflection mirrors installed in the transfer unit and reflecting the laser beam reflected from the second reflection mirror in a vertical direction; Respective laser heads installed in the conveying part and installed under the third reflecting mirror to irradiate a laser beam reflected from the third reflecting mirror onto the light guide plate; Left and right conveying means for moving the conveying unit left and right; A control unit for controlling oscillation of the laser beam of the laser generating device, transfer of the front and rear transfer means, and transfer of the left and right transfer means, respectively; CO ₂ laser device for light guide plate processing characterized in that consisting of. The method of claim 1, wherein the front and rear transfer means, Light guide plate processing CO ₂ comprising a lead screw installed in the front and rear directions at both ends of the guide rail, a drive motor for rotating the lead screw, and a coupling portion coupled to the lead screw at both ends of the guide rail. Laser device. According to claim 1, wherein the left and right transfer means, Light guide plate processing CO ₂ laser device, characterized in that consisting of a belt installed on the guide rail, the gear is formed inside, a pulley formed gear to mesh with the gear of the belt, and a belt drive motor for rotating the pulley. The method of claim 1, Light guide plate processing CO, characterized in that provided with a protective tube length adjustable in the path of the laser beam is reflected between each of the laser generating device, the first reflection mirror, the second reflection mirror and the third reflection mirror. ₂ laser unit. The method of claim 1, The second reflection mirror includes one reflection mirror that reflects the laser beam reflected from the first reflection mirror at a predetermined angle, and the other reflection mirror that reflects the laser beam reflected from the reflection mirror to the third reflection mirror. CO ₂ laser device for light guide plate processing, characterized in that consisting of.

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