KR100842185B1 - Device for cutting a panel sheet for a element of lcd - Google Patents

Abstract

An apparatus for cutting a panel sheet for an LCD is provided to prevent cutting work from being obstructed due to sheet remnants by carrying them to a specific region. An apparatus for cutting a panel sheet for an LCD comprises a pinnacle cutting mold(120) and a flat body(100). The pinnacle cutting mold comprises a cutting blade(122) to cut a sheet fabric and a tip cutting part(125) to form a fixing tip at the girth of the sheet fabric which is cut along the cutting blade. A guide passage to guide a sheet remnant, cut by the upper end of the tip cutting part, upwards is formed inside of the tip cutting part. The pinnacle cutting mold is installed at one side of the flat body. At the other side of the flat body, a loading region, where the sheet remnant guided by the guide passage is stored, is formed. The flat body has an internal passage which connects the guide passage with the loading region.

Description

Panel sheet cutting device for liquid crystal display device {DEVICE FOR CUTTING A PANEL SHEET FOR A ELEMENT OF LCD}

1 is a perspective view schematically showing a configuration of a general LCD backlight unit.

2 is a plan view showing a pinnacle cutting mold of the panel sheet cutting device according to the prior art.

3 is a perspective view showing a pinnacle cutting mold of the panel sheet cutting device according to the prior art.

Figure 4 is a perspective view of a panel sheet cutting device for a liquid crystal display device according to an embodiment of the present invention.

FIG. 5 is a partial perspective view of the tip cutout of FIG. 3. FIG.

6 is a rear perspective view of FIG. 3.

FIG. 7 is a partial perspective view illustrating the loading zone of FIG. 5. FIG.

8 is a cross-sectional view of II of FIG. 2.

9A to 9D are cross-sectional views of II-II of FIG. 2.

<Explanation of symbols on main parts of the drawings>

100: plate body 120: pinnacle cutting mold

122: cutting blade 125: tip cutting portion

130: flow path 135: loading area

136: internal passage 138: vertical

139: horizontally 140: bent portion

142: obstruction 143: slope

144: sloped surface 145: "V" groove

148 tape 150 support

The present invention relates to a panel sheet cutting device for a liquid crystal display device, and more particularly, to a panel sheet cutting device for a liquid crystal display device for forming a fixing tip on the outer periphery of the panel sheet included in the backlight unit of the LCD.

In general, liquid crystal display devices (hereinafter referred to as LCDs) used in display devices such as laptops, desktop computers, and liquid crystal TVs (LCDs) have low light weight and low power consumption compared to cathode ray tubes (CRTs), which are other image display devices. There is an advantage that can be realized, and the demand is increasing.

However, unlike the cathode ray tube, the LCD is not a light emitting device but a light receiving device, and thus requires a backlight unit in addition to the LCD screen.

The backlight unit of the LCD is used as a dimming device that evenly transmits light throughout the panel, and the LCD panel displays an image by constantly adjusting the amount of light transmitted.

1 is a perspective view schematically showing a configuration of a general LCD backlight unit.

As shown in FIG. 1, a general backlight unit 1 includes a light source 2 such as a fluorescent lamp, a light guide plate 3 for scattering and homogenizing light emitted from the light source 2, and the light guide plate 3. A liquid crystal panel 4 disposed on an upper portion of the light emitting plate; a diffusion sheet 5 disposed between the light guide plate 3 and the liquid crystal panel 4 to increase uniformity of light incident on the liquid crystal panel 4; A reflecting plate 6 disposed on the opposite surface of the diffusion sheet 5 with the interposed portion 3 interposed therebetween to prevent exposure of light generated from the light source 2 to the outside, and exiting from the diffusion sheet 5; One or two prism sheets 7 for changing the light propagation path and deriving the brightness of the light, and a protective sheet 8 for protecting the prism sheet 7.

The backlight unit 1 configured as described above may be manufactured by assembling an independent diffusion sheet 5, a prism sheet 7, and a protective sheet 8 sequentially on the light guide plate 3 and assembling them into a mold frame (not shown). do.

It is very important to fix the position of each sheet in this assembly process, and positioning through-holes 11 'and 12' for positioning in each sheet as shown in FIG. 2 in the sheet cutting process. The fixing tips (11) and (12) to be provided are used to determine the position of the sheet in the assembly process. As described above, since it is very important to simultaneously form the fixing tips 11 and 12 in the sheet cutting process, the tip cutting portion must be included in the sheet cutting device.

3 is a perspective view showing a pinnacle cutting mold of the panel sheet cutting device according to the prior art.

As shown in FIG. 3, the Pinnacle cutting mold according to the prior art has a plate body 21 such as wood and one side surface of the plate body 21 to be cut to fit the outer shape of the panel sheet. The blade-shaped cutting blade 22 is fixed to the extension and the cutting blade 22 is extended to the cutting blade 22 so as to cut to fit the outer shape of the fixing tips (11, 12) shown in FIG. It comprises a tip cut portion 23 is fixed to (21).

Inside the tip cutout 23, a circular blade 24 is formed for drilling the fixing holes 11 'and 12' of the fixing tips 11 and 12 shown in FIG. It is.

By the way, the pinnacle cutting mold of the conventional panel sheet cutting device as described above is easy to pinnacle cutting mold by being laminated inside the sheet grip is cut inside the circular blade is not discharged from the circular blade after the cutting operation is made. Broken or scattered to the next sheet fabric to be cut by the circular blade 24, remaining as an element preventing the cutting of the sheet fabric, or attached to the cutting surface of the pinnacle cutting mold to prevent cutting of the sheet fabric by the pinnacle cutting mold There was a problem of generating a defective product in the cutting of.

The present invention is to solve the problems as described above, the object of the present invention is to prevent the breakage of the plate-shaped body by the accumulation of the sheet phage, and to collect in a certain area of the plate body so as not to be scattered to other sheet fabric to be cut The present invention provides a panel sheet cutting apparatus for a liquid crystal display device that can be discharged from a pinnacle cutting mold at a time.

In the configuration of the panel sheet cutting device for a liquid crystal display device according to the present invention for solving the above problems is formed a cutting blade for cutting the sheet fabric for the liquid crystal display device according to the liquid crystal, the sheet is cut along the cutting blade A tip cutting part is provided to form a fixing tip having a through hole formed at the periphery of the fabric, and a flow path for guiding the sheet grip cut by the upper end of the tip cutting part upward is formed inside the tip cutting part. A plate-shaped body having a pinnacle cutting mold and the pinnacle cutting mold formed on one surface thereof, the flow passage being narrower than an upper end portion of the tip cutting portion, and having a loading area for discharging and storing the sheet phage guided by the flow passage; Include.

Hereinafter, a preferred embodiment of a panel sheet cutting apparatus for a liquid crystal display device according to the present invention with reference to the accompanying drawings will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

In addition, the following examples are not intended to limit the scope of the present invention but merely presented by way of example, and there may be various embodiments implemented through the present invention.

Example

4 is a perspective view of a panel sheet cutting device for a liquid crystal display device according to an embodiment of the present invention, FIG. 5 is a partial perspective view showing a tip cutout of FIG. 3, FIG. 6 is a rear perspective view of FIG. 3, and FIG. 7 is 5 is a partial perspective view illustrating the loading zone of FIG. 5, FIG. 8 is a cross-sectional view of II of FIG. 2, and FIGS. 9A to 9D are a cross-sectional view of II-II of FIG. 2.

As shown, the panel sheet cutting apparatus for a liquid crystal display device according to an embodiment has a pinnacle cutting mold 120 for cutting the sheet fabric 160 into a predetermined backlight sheet panel, one surface of the plate-shaped body 100 It is provided in the portion, the sheet fabric 160 is supported by another support of a plate shape, not shown, the sheet fabric 160 is determined by the pinnacle cutting mold 120 of the plate body 100 is pressed from the top to the bottom It is cut into a sheet panel for backlight.

Here, a cutting blade 122 for cutting the sheet fabric 160 for the liquid crystal display device protrudes and surrounds an inner portion of the pinnacle cutting mold 120, and is cut along the cutting blade 122. Tip cutting portion 125 forming a fixing tip 165 having a through hole formed in the periphery of the 160 is provided at both sides in the diagonal direction at the center of the cutting blade (122).

At this time, the tip cutting portion 125 is a pipe structure formed with a circular blade at the upper end, the sheet grip 170 to cut the sheet grip 170 cut by the upper end of the tip cutting portion 125 from the upper end to the inside The flow path 130 which is guided upward by the pressurization of is formed.

Here, the flow path 130 is formed narrower than the upper end of the tip cutout portion 125 so that the sheet grip 170 is cut at the sheet fabric 160, and then the tip cutout portion (170) by the sheet grip 170 is cut next Pushed into the flow path 130 of 125, the outer peripheral end is supported on the inner wall is prevented from being separated out of the upper end of the tip cutout portion 125, the sheet grip 170 is gradually introduced from the upper end of the tip cutout portion 125 By the flow path along the flow path 130.

In addition, the pinnacle cutting mold 120 is fixed to one side of the plate-shaped body 100 formed by stacking the wood panel, the plate-shaped body 100 is connected internally to the flow path 130 of the tip cutting portion 125 Since the loading zone 135 is formed on the other surface portion, the sheet grip 170 is moved to and stored in the predetermined loading zone 135 of the plate-shaped body 100.

In addition, the plate-shaped body 100 should be formed with another flow path 130 that internally connects the flow path 130 and the loading area 135 of the tip cutting part 125, the other flow path 130 is a tip cutting part The inner passage 136 penetrates through the plate-shaped body 100 toward the loading region 135 formed at the other surface portion 125 at 125.

Meanwhile, the flow path 130 and the inner passage 136 of the tip cutting part 125 are bent in the vertical path 138 and the vertical path 138 extending in a straight line from the upper end of the tip cutting part 125. A horizontal path 139 extending to the loading area 135 is included, and the sheet grip 170 is stacked on the bent part 140 formed between the vertical path 138 and the horizontal path 139 to bend the part 140. Since the flow of the sheet phage 170 may be stopped at), it is necessary to irregularly flow the sheet phage 170 passing through the bent portion 140 to prevent the accumulation of the sheet phage 170.

First, the accumulation of the sheet grip 170 in the bent portion 140 formed by the vertical passage 138 and the horizontal passage 139 of the flow passage 130 and the inner passage 136 of the tip cutting portion 125. A first element for preventing will be described.

That is, the first element that prevents the stacking of the sheet grip 170 is caught by the sheet grip 170 at the bent portion 140 connected from the vertical passage 138 to the horizontal passage 139. 135, a plurality of locking protrusions 142 are formed to irregularize the flow of the sheet grip 170, and the plurality of locking protrusions 142 may form a concave-convex path at the bent portion 140 to bend the portion 140. It is possible to prevent the stacking of the sheet grip 170 passing through.

Here, the outer end portion of the sheet grip 170 that reaches the locking protrusion 142 of the bent portion 140 passes through the uneven path formed by the plurality of locking protrusions 142, so that the plurality of overlapped sheet grips 170 The gap is opened while passing through the uneven road and is pushed up to the loading area 135 while forming an irregular arrangement while passing the horizontal path 139 of the bent portion 140.

In addition, a second element that prevents the stacking of the sheet grip 170 is provided at the outer inner wall surface of the bent portion 140 connected from the vertical passage 138 to the horizontal passage 139 to the sheet grip 170. It is an inclined surface 143 which guides the flow from the vertical direction to the horizontal direction.

Here, the sheet grip 170 is accumulated by the sheet grips 170 cut from the upper end of the tip cut portion 125 while gradually reaching the bent portion 140 connected from the vertical passage 138 to the horizontal passage 139. However, the inclined curved surface 144 formed from the vertical path 138 to the horizontal path 139 side causes the sheet grip 170 to be pushed out while inclining the horizontal path 139 side, and the sheet grip reached from the horizontal path 139. 170 is pushed toward the loading zone 135 while making an inclination, and the sheet grip 170 from the horizontal path 139 to the loading area 135 is moved in an irregular shape than the vertical path 138 to move vertically. Stoppage of the seat grip 170 through the bent portion 140 of the horizontal path 139 at 138 can be prevented.

In addition, a third element for preventing the stacking of the sheet grip 170 is provided on the outer inner wall surface of the bent portion 140 connected from the vertical passage 138 to the horizontal passage 139 of the sheet grip 170 As the inclined curved surface 144 for guiding the flow from the vertical direction to the horizontal direction, the inclined curved surface 144 provided in the bent portion 140 has the same function as the inclined surface 143 so that the sheet grip 170 is vertically 138. In order to smoothly move from the horizontal to 139, the sheet phage 170 is spaced apart from each other in a variety of arrangements passing through the inclined curved surface 144 and flows in an irregular shape to the loading area 135 is bent portion 140 ) Can prevent the flow by accumulation

In addition, a fourth element that prevents the stacking of the sheet grip 170 is formed on the outer inner wall surface of the bent portion 140 connected from the vertical passage 138 to the horizontal passage 139 to form the sheet grip 170 One end of the sheet grip 170 is provided to provide a folding of the sheet grip 170, and again provides a release of the sheet grip 170 is caught by the sheet grip 170 that flows downstream to the seating region 135 170 is a "V" type locking groove 145 that makes the flow irregular.

Here, the "V" -type locking groove 145 formed on the outer inner wall surface of the bent portion 140 is inclined toward the inner wall surface in the vertical path 138, the sheet grip reached to the "V" -type locking groove 145 170 is folded to the horizontal (139) side while the end is partially caught in the "V" type locking groove 145 while being pressed by the other seat grips 170, "V" type locking groove 145 As it is separated by the elasticity of its own change to an irregular flow shape flows to the horizontal (139) to reach the loading zone 135 can be prevented from being stacked in the bent portion (140).

In addition, a tape 148 for closing the loading zone 135 may be attached to a surface portion in which the loading zone 135 of the plate-shaped body 100 is formed, and the tape 148 may be formed of air to the outside of the loading zone 135. The separation of the sheet grip 170 by flow or other external factors is completely prevented, and when the cutting operation of the sheet fabric 160 is completed or the sheet grip 170 fills a certain amount into the loading area 135. After stopping the work and removing the tape 148, the sheet grip 170 in the loading area 135 may be removed.

In the panel sheet cutting device for a liquid crystal display device according to the present invention configured as described above, the sheet grip is not separated from the sheet fabric or laminated to the tip cutting portion by the tip cutting portion, and flows as it is to the upper layer of the tip cutting portion to fix the tip cutting portion. By spilling into the upper part of the body, it prevents the plate body from being damaged by the accumulation of the sheet phage, and collects it in a certain area of the plate body so as not to be scattered to other sheet fabrics to be cut. You can get it.

Claims (4)

A cutting blade is formed to cut the sheet fabric for the liquid crystal display device according to the liquid crystal. A tip cutting portion is provided to form a fixing tip having a through hole formed at the periphery of the sheet fabric cut along the cutting blade. A pinnacle cutting mold having a flow path for guiding the sheet grip cut by the upper end of the tip cutting part upwardly, the flow path being narrower than the upper end of the tip cutting part; And The pinnacle cutting mold is provided on one surface portion, and a loading zone for discharging and storing sheet phage guided by the flow passage is formed on the other surface portion, and a plate-shaped body having an inner passage connecting the flow passage and the loading zone. Panel sheet cutting device for a liquid crystal display device comprising a. The method of claim 1, The flow path and the inner passage of the tip cutting portion includes a vertical path extending in a straight line from the upper end of the tip cutting portion and a horizontal path that is bent in the vertical path and extends into the loading zone, the vertical path to the horizontal path The bent portion is connected to the panel sheet cutting device for a liquid crystal display device, characterized in that a plurality of engaging projections to irregularly flow the sheet phage to the loading area while the sheet gripping is formed. The method of claim 1, The flow path and the inner passage of the tip cutting portion includes a vertical path extending in a straight line from the upper end of the tip cutting portion and a horizontal path that is bent in the vertical path and extends into the loading zone, the vertical path to the horizontal path The outer inner wall surface of the bent portion is connected to the panel sheet cutting device for a liquid crystal display device, characterized in that formed in the inclined surface or inclined curved surface so that the flow of the sheet grip is guided in the horizontal direction from the vertical direction. The method of claim 1, The flow path and the inner passage of the tip cutting portion includes a vertical path extending in a straight line from the upper end of the tip cutting portion and a horizontal path that is bent in the vertical path and extends into the loading zone, the vertical path to the horizontal path The outer inner wall surface of the bent portion is connected to one end of the sheet phage to provide folding of the sheet phage, and again to provide a release of the sheet phage caught by the sheet phage flowing downstream, thereby allowing the sheet phage to flow into the loading zone. Panel sheet cutting device for a liquid crystal display device, characterized in that the "V" type engaging groove is formed to irregularly.

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