KR20160124413A - Cutting System For Light Guide Plate And Cutting Mathod Thereof - Google Patents

Abstract

The present invention relates to a cutting system for a light guide plate and a cutting method for a light guide plate using the same and, more specifically, to a cutting system for a light guide plate and a cutting method for a light guide plate using the same, which prevent cutting defects in the corner part of a light guide plate and enable the reliable and mass cutting of the light guide plates. The cutting system for a light guide plate comprises: a moving stage; and a cutting device which has a cutter part having first and second cutting units and a cutting frame where the cutter part is installed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting system for cutting a light guide plate,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting system for cutting a light guide plate and a light guide plate cutting method using the same and more particularly to a cutting system for cutting a light guide plate and a light guide plate cutting method .

Since the light guide plate is composed of synthetic resin materials such as PC, PMMA, MS and PS in general, it is constituted to transmit the light emitted from the light source of the backlight unit to the upper part. .

In the conventional cutting device for cutting a light guide plate, the cutter is continuously arranged on four sides of a quadrangle corresponding to the size of the light guide plate so that four planes of the light guide plate can be cut at a time, so that the light guide plate can be cut from the light guide plate base material with a single cutting.

However, in the conventional cutting device for cutting the light guide plate, when a gap occurs at a corner where the cutter of each side intersects vertically and horizontally, or when a gap occurs due to use of the cutter, the edge portion is not cut, (Burr) and the like are caused, resulting in poor productivity and yield.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cutting apparatus and method for cutting a cutter unit having a first cutting unit cutting a horizontal surface facing the cutter unit and a second cutting unit cutting a vertical surface facing the cutter unit, Which is capable of precisely cutting the corner portion of the light guide plate by cutting and separating the vertical plane of the light guide plate.

According to an aspect of the present invention, there is provided a cutting system for cutting a light guide plate, the cutting system including a moving stage for loading and moving a light guide plate, a pair of first shaft cutters installed on the moving stage, And a cutting device including a cutter unit having a cutter unit having a second cutting unit configured by a pair of second axial cutters for cutting a second axial face facing the first cutting unit, and a cutting frame for mounting the cutter unit .

The moving stage may include a plurality of rollers disposed inside the moving stage so that the light guide plate base material can be loaded and moved, and the movement of the light guide plate on the moving stage is controlled through precise control of the driving motor for driving the rollers do.

The cutting device includes a moving mechanism that can vertically move the cutting frame equipped with the cutter part. The moving mechanism cuts the light guide plate by pressing the light guide plate by hydraulic pressure or air pressure when cutting the light guide plate.

Further, the first shaft cutter and the second shaft cutter are constituted by a plurality of pieces in at least one of a longitudinal direction and a transverse direction.

It is preferable that one of the first axis cutter and the second axis cutter, which is formed of a plurality of pieces in at least one of the longitudinal direction and the lateral direction, is composed of a plurality of cutters corresponding to the number of light guide plates to be cut, A cutter is formed such that one of the longitudinal direction and the lateral direction has a length capable of simultaneously cutting a plurality of light guide plates and the other direction is formed of a number corresponding to the number of light guide plates cut in the corresponding direction .

The first axis cutter and the second axis cutter are formed so as to be larger than the first axis surface and the second axis surface of the light guide plate to be actually cut and are cut so that the edges intersect the first axis surface and the second axis surface when the light guide plate is cut. do.

On the other hand, a first cutting unit, which is composed of a moving stage on which the light guide plate base material is loaded and moved, and a pair of first axial cutters provided on the moving stage and cutting the first axial surface facing the first cutting unit, A cutter unit including a cutter unit having a second cutting unit configured by a pair of second axis cutters and a cutting frame for mounting the cutter unit. The method of cutting a light guide plate using a cutting system for cutting a light guide plate, Moving the light guide plate base material until the first light guide plate cutting area of the light guide plate base material is positioned below the first axis cutter; pressing the cutting frame downward to press the first axis Cutting the first axis surface of the first light guide plate cutting area of the light guide plate base material, cutting the first light guide plate cut Moving the light guide plate base material until the area is located below the second axis cutter; pressing the cutting frame downward to cut the second axial face of the first light guide plate cutting area of the light guide plate base material by the second axial cutter And cutting the first light guide plate and simultaneously cutting the first axial face of the second light guide plate cut region adjacent to the first light guide plate by the first axial cutter.

Wherein the first shaft cutter and the second shaft cutter are constituted by a plurality of pieces in at least one of a longitudinal direction and a transverse direction, the step of cutting the first axial surface includes cutting a plurality of first axial surfaces, Cutting the first light guide plate and simultaneously cutting the first axis surface of the second light guide plate cutout region of the first axis cutter adjacent to the first light guide plate by cutting the plurality of first light guide plates, And the first axial surface of the region is cut.

The first axis cutter and the second axis cutter are formed so as to be larger than the first axis surface and the second axis surface of the light guide plate to be actually cut and are cut so that the edges intersect the first axis surface and the second axis surface when the light guide plate is cut. do.

As described above, according to the present invention, there is provided a cutting system for cutting a light guide plate and a method for cutting a light guide plate, comprising a first cutting unit for cutting a horizontal surface facing the cutter unit and a second cutting unit for cutting a vertical surface facing the cutter unit, It is possible to precisely cut the corner portion of the light guide plate by separating and cutting the vertical plane opposed to the horizontal plane, thereby resulting in an excellent effect of improving the yield.

In addition, by cutting the light guide plate in the form of a pipeline, it is possible to mass-produce the light guide plate, resulting in an excellent effect of reducing the processing cost and the processing time.

1 is a perspective view schematically showing a cutting system for cutting a light guide plate, which is divided into two cutting units according to a preferred embodiment of the present invention.
FIG. 2 is a process diagram schematically showing a light guide plate cut from a light guide plate base material according to a preferred embodiment of the present invention.
3 is a schematic view illustrating a cutting device for cutting a light guide plate for a multi-cavity in which a plurality of light guide plates are simultaneously cut according to a preferred embodiment of the present invention.
FIG. 4 is a schematic view illustrating cutting of a light guide plate by a cutting apparatus having a plurality of first and second shaft cutters according to a preferred embodiment of the present invention.
FIG. 5 is a schematic view illustrating a cutting operation in a first axial direction and a second axial direction according to a preferred embodiment of the present invention, in which cutting is performed at an angle larger than the size of the actual light guide plate.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a perspective view schematically showing a cutting system for cutting a light guide plate, which is divided into two cutting units according to a preferred embodiment of the present invention.

Referring to FIG. 1, a cutting system for cutting a light guide plate according to the present invention includes a moving stage 20 on which a light guide plate is loaded and moved, a pair of first shaft cutters And a cutting unit (10) for mounting the cutter unit. The cutting unit includes a first cutting unit configured by a first cutting unit and a second cutting unit including a pair of second shaft cutters And the like.

Here, the first axial face may be two opposing faces of the X-axis or the Y-axis, and in this case, the second axial face is two opposing faces of the other axial.

The first axial surface and the second axial surface are combined and cut into four planes of the light guide plate.

A plurality of rollers may be disposed inside the moving stage so that the light guide plate can be loaded and moved. The movement stage 20 can control the movement of the light guide plate on the moving stage through precise control of the motor driving the rollers.

The cutting mechanism includes a moving mechanism that can vertically move the cutting frame 10 equipped with the cutter part. The moving mechanism presses the cutting frame 10 onto the light guide plate by hydraulic pressure or pneumatic pressure when the light guide plate is cut The light guide plate is cut.

FIG. 2 is a process diagram schematically showing a light guide plate cut from a light guide plate base material according to a preferred embodiment of the present invention.

Referring to FIG. 2, when the light guide plate base material is loaded on the moving stage 20, the moving stage operates to move the light guide plate base material in one direction in which the cutting frame 10 is located.

Here, since the light guide plate base material is made of a synthetic resin material such as PMMA, PC, PS, and MS of flexible material, it can be loaded on the moving stage 20 while being wound on a roll.

When the light guide plate base material moves and reaches the cutting position under the cutting frame 10, the movement stage 20 stops operating.

More specifically, when the first light guide plate cutting area A of the base material of the light guide plate is positioned below the first cutting unit 110 of the cutting frame, the moving stage 20 is stopped. The driving motor of the moving stage 20 employs a step motor or a servo motor to precisely control the position of the light guide plate on the moving stage.

The moving mechanism of the cutting device operates to press the cutting frame 10 downward to cut the opposite first axial face of the first light guide plate cutting area A of the light guide plate base material by the first cutting unit 110, And then returns to the top.

Then, when the movable stage 20 is driven again to move the base material of the light guide plate and the first light guide plate cutting area A cut by the first cutting unit 110 is positioned below the second cutting unit 120, The stage 20 is stopped.

The moving mechanism of the cutting device operates to press the cutting frame 10 downward so that the opposing first axial face of the first light guide plate cut region A is cut by the second cutting unit 120, The first light guide plate of the first light guide plate cut region A is completely cut. At this time, the first cutting unit 110 cuts the first axial face opposed to the second light guide plate cut region B adjacent to the first light guide plate.

The above process is repeated until the N-th light guide plate is cut.

As a result, since the cutting apparatus proceeds in the form of a pipeline, 1.5 cutting of the light guide plate is completed by cutting two times of the cutting apparatus.

That is, since cutting is possible by N + 1 cutting in order to cut N light guide plates, the cutting process is minimized since only one cutting process is added, compared to the case of cutting with a single cutting unit, Cutting is possible.

3 is a schematic view illustrating a cutting device for cutting a light guide plate for a multi-cavity in which a plurality of light guide plates are simultaneously cut according to a preferred embodiment of the present invention.

Referring to FIG. 3, a cutting device for cutting a light guide plate according to the present invention may include a plurality of first shaft cutters of a first cutting unit and a second shaft cutter of a second cutting unit to improve productivity.

Fig. 3A shows three first cutters and two second cutters formed in the longitudinal direction, and Fig. 3 (b) shows three cutters in the longitudinal direction and two cutters in the transverse direction, And the second shaft cutter are formed in each case.

That is, a plurality of first shaft cutters and second shaft cutters according to the present invention may be formed in at least one of a longitudinal direction and a lateral direction.

Fig. 3B shows that the first shaft cutter and the second shaft cutter are formed differently, and the first shaft cutter is provided with six cutters arranged in three in the longitudinal direction and in the two in the lateral direction, Two cutters arranged one in the longitudinal direction and two in the lateral direction are arranged.

 The cutter of one of the first axis cutter and the second axis cutter is arranged to have a size corresponding to the number of cuts of the light guide plate and the other cutter has a size corresponding to the size connecting the cutters arranged in the longitudinal direction or the transverse direction The light guide plate can be arranged in a smaller number than the light guide plate formed by being extended and cut.

For example, when the light guide plate is divided into n pieces in the transverse direction and m pieces in the longitudinal direction at the same time (n x m pieces), the first axis cutters are arranged in sizes corresponding to n x m, M in the case of being designed to extend in the lateral direction, and n in the case of being designed to extend in the longitudinal direction.

FIG. 4 is a schematic view of cutting a light guide plate by a cutting device having three first and second axis cutters in the longitudinal direction according to a preferred embodiment of the present invention.

Referring to FIG. 4, since the first axis cutter and the second axis cutter are constituted by three in the longitudinal direction, it is possible to cut the light guide plate by three times as compared with when the first axis cutter and the second axis cutter are constituted by one.

The specific cutting method is the same as that in the case of one cutting, but the number of the light guide plates to be cut as shown in FIG. 4 increases by three times, and the production amount also increases by three times.

Therefore, in the case of one N light-guide plate for cutting, it is necessary to cut N + 1 times. However, in case of three N / 1 light-guide plates, the number of cutting is significantly reduced to N / 3 + 1, It can be dramatically reduced.

FIG. 5 is a schematic view illustrating a cutting operation in a first axial direction and a second axial direction according to a preferred embodiment of the present invention, in which cutting is performed at an angle larger than the size of the actual light guide plate.

If the two first and second axes are separately cut, the edge portions may not be cut off due to dimensional errors or cutting errors, or burrs may be formed at the corners, which may deteriorate the quality.

Therefore, when the first axis cutter and the second axis cutter are made larger than the dimensions of the actual light guide plate, the cutter intersects at the corner portion, so that more accurate and precise cutting is possible.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: cutting frame 20: moving stage

Claims (9)

A moving stage in which the light guide plate base material is loaded and moved;
A first cutting unit provided on the moving stage and configured to cut a first axial surface facing the first cutting unit and a second cutting unit configured to cut a second axial surface opposed to the first cutting unit; And a cutting device including a cutting frame for mounting the cutter part;
Wherein the first axial surface is two opposing surfaces of the X axis or the Y axis and the second axial surface is two opposing surfaces of the other one of the axes and the four axial surfaces and the second axial surfaces of the light guiding plate are cut Wherein the light guide plate has a flat surface.
The method according to claim 1,
The moving stage
A plurality of rollers may be disposed inside the moving stage so that the light guide plate base material can be loaded and moved and the movement of the light guide plate on the moving stage is controlled through precise control of a driving motor for driving the rollers. Cutting system.
The method according to claim 1,
The cutting device
And a moving mechanism capable of moving up and down a cutting frame equipped with the cutter part, wherein the moving mechanism presses the light guide plate by hydraulic pressure or air pressure when cutting the light guide plate, thereby cutting the light guide plate.
The method according to claim 1,
The first shaft cutter and the second shaft cutter
Wherein the light guide plate is constituted by a plurality of pieces in at least one of a longitudinal direction and a lateral direction.
5. The method of claim 4,
And a plurality of pieces in at least one of the longitudinal direction and the transverse direction
Wherein one of the first shaft cutter and the second shaft cutter
A plurality of light guide plates corresponding to the number of light guide plates to be cut;
The other cutter
One of the longitudinal direction and the lateral direction is formed with a cutter so as to have a length capable of simultaneously cutting a plurality of light guide plates and the remaining one direction is constituted by a number corresponding to the number of light guide plates cut in the corresponding direction Cutting system for cutting light guide plate.
The method according to any one of claims 1 to 5,
The first shaft cutter and the second shaft cutter
Wherein the first axis surface and the second axis surface of the light guide plate to be actually cut are larger than the first axis surface and the second axis surface so that the first axis surface and the second axis surface intersect when the light guide plate is cut.
A first cutting unit configured by a moving stage on which the light guide plate is loaded and moved and a pair of first axis cutters provided on the moving stage and cutting the first axis face facing the first cutting unit, A cutting method for a light guide plate using a cutting system for cutting a light guide plate, comprising: a cutting device including a cutter unit having a second cutting unit composed of a two-axis cutter and a cutting frame for mounting the cutter unit;
Loading the light guide plate base material onto a moving stage;
Moving the light guide plate base material until the first light guide plate cutting area of the light guide plate base material is located below the first axis cutter;
Pressing the cutting frame downward to cut a first axial face of the first light guide plate cutting area of the light guide plate base material by the first axial cutter;
Moving the light guide plate base material until the first light guide plate cutting area of the light guide plate base material is located below the second axis cutter;
The second axis cutter cuts the first light guide plate by cutting the second axis face of the first light guide plate cutting area of the base material of the light guide plate so as to cut the first light guide plate, Cutting the first axial face of the light guide plate cutting area;
The above-described process is repeated until the N-th light guide plate is cut, and cutting of the light guide plate is completed by cutting the cutter twice.
8. The method of claim 7,
The first shaft cutter and the second shaft cutter
A plurality of the first and second electrodes are arranged in at least one of a longitudinal direction and a lateral direction;
Cutting the first axial face comprises cutting a plurality of first axial faces;
The step of cutting the first light guide plate by cutting the second axial face and cutting the first axial face of the second light guide plate cut region adjacent to the first light guide plate by the first axial cutter simultaneously cut a plurality of first light guide plates, And cutting the first axial surface of the second light guide plate cutting areas.
9. The method according to claim 7 or 8,
The first shaft cutter and the second shaft cutter
Wherein the first axis surface and the second axis surface of the light guide plate are cut larger than the first axis surface and the second axis surface so that the edges intersect the first axis surface and the second axis surface when the light guide plate is cut.

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