KR100371336B1 - System of mold manufacturing - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold manufacturing system for manufacturing punches for forming grooves in display means such as plasma display panels, LCD backlighting, and reflective sheets of film prism road signs. The hardness and strength are reinforced to extend the life of the mold for molding, and the grinding process using the grinding wheel in the form of disk is used to improve the freedom of selection of the material of the mold, and the grooves in the mold are striped or waffle. It is easy to change the shape in the shape of the shape, and can be applied to all the molds regardless of the area or shape of the mold, and the machining time is reduced by using a plurality of spaced apart by considering the pitch between the grooves per line. In addition to minimizing the amount of wear on the grinding wheel, The groove shape of the grooves can be improved, and the surface roughness can be improved. Furthermore, the camera is equipped with a camera that records the wear level of the grinding wheel. It will provide an effect that can be processed.

Description

System of Mold Manufacturing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold manufacturing system for manufacturing punches for forming grooves in display means, such as plasma display panels, LCD backlighting, and reflective sheets of film prism road signs. The present invention relates to a mold manufacturing system for compensating for the deformation of the punch due to the life of the mold and the wear of the bite during processing.

As the modern society is called the information society, the importance of visual information has increased and the diversification of its kind has been made remarkably according to the development and dissemination of information processing system.

As the most important man-machine interface of the image information, the display means is becoming an important era.

The display means can be directly applied to LCD, TV or AV monitors, computer displays, etc., which can be contributed to various video display devices in society, such as a flat-vision panel and a plasma display panel. It is thin and light, and is being developed in various ways to realize a large screen.

In particular, the PDP injects a discharge gas between a thin surface substrate and a rear substrate on which a plurality of transparent electrodes are formed, and discharges the surface of the rear substrate by ultraviolet rays generated when a discharge is applied by applying a voltage between the transparent electrodes. Allow the applied phosphor to emit light.

Each of the light emitting elements consisting of the plurality of transparent electrodes and the phosphor is formed of a cell separated by a barrier-rib, each of which is independently driven, and has a matrix structure that forms a thin and wide plane as a whole.

Due to the matrix structure, the weight is light, the flattening of the screen and the implementation of a large screen are facilitated, and the advantages of eliminating color bleeding and focus deterioration can be overcome. The field of use is expanding as a display means.

In the above, the partition forming mold for forming the partition on the back substrate of the PDP is a plate-shaped punch and a roll-shaped punch as shown in Figs.

First, in order to manufacture the plate-shaped punch shown in FIG. 1, the shaping process is performed with an NC machining facility by using the bite 12a moving up, down, left, and right on the upper surface of the plate-shaped workpiece 11. .

Next, in order to manufacture the punch of the roll form shown in FIG. 2, the bite 12b is used for the roll-shaped workpiece | work 14 which rotates at a constant speed about the rotating shaft 13. As shown in FIG.

At this time, the plate-shaped workpiece 11 and the roll-shaped workpiece 14 is formed of a non-ferrous material such as copper, oxygen-free copper, brass, aluminum suitable for shaping and lathe machining.

The punch formed as described above is formed with the partition wall forming grooves 15 formed in the plate-shaped workpiece 11 and the roll-shaped workpiece 14 as shown in FIG. 3, which shows 'A' and 'B' in FIGS. 1 and 2. .

Here, the punch forming system for partition wall formation using the bites 12a and 12b will be described in more detail with reference to FIG. 4 with a punch in the form of a plate.

The prior art is a bed (Bed; 21) to be loaded with the plate-shaped or roll-shaped workpiece (11), and a fixing jig (23) for fixing the workpiece (11) so as not to move when the workpiece 11 is placed on the bed; In addition, the bite 12a is configured to include a bite holder 25 for fixing the bite (12a) so that the bite (12a) on the workpiece (11) to perform the up, down, left and right movement to form the partition forming groove (15).

In the prior art operation configured as described above, the workpiece 11 is placed on the bed 21 and the workpiece 11 is fixed by using the fixing jig 23. Thereafter, the bite 12a fixed to the bite holder 25 is lowered to the machining start position of the workpiece 11 and then moved left and right from one end of the workpiece 11 to the end thereof, then raised to start the next machining. The partition wall forming grooves 15 are formed on the upper surface of the workpiece 11 by repeatedly descending from the position and performing the lateral movement.

That is, as shown in FIG. 5, while the bite 12a moves in the 'C' direction, the partition wall forming grooves 15 are processed on the upper surface of the workpiece 11. It will proceed to the beginning, middle and end of processing.

At this time, the bite 12a maintains a sharp shape of the edge of the workpiece 11 as shown in the front view of (a) of FIG. 6A and the side view of (b) before processing or at the beginning of the processing. As shown in (c), the bottom surface of the partition wall forming groove 15 is accurately processed, and the side surface of the partition wall forming groove 15 also maintains a good surface roughness.

By the way, as the bite 12a starts processing and goes through the middle and end of processing, the cutting amount of cutting increases from the end of the day as shown in (a) front view and (b) side view of FIG. It may break as shown in (c) under heavy load on (12a). Therefore, when the partition wall forming grooves 15 are formed in the workpiece 11 with the bite 12a as shown in FIGS. 6B and 6B, the partition walls of the (B) or (C) portion of the workpiece 11 are formed. Not only the bottom surface of the molding groove 15 is not kept flat, but also the surface roughness of the side surface is deteriorated.

Therefore, in the conventional case, as the size of the workpieces 11 and 14 increases, the wear speed of the bites 12a and 12b increases rapidly due to the increase in the heavy load and the cutting amount of the bites 12a and 12b formed of the same material. When the partition wall of the punch for forming the partition is accelerated and the surface roughness (1.0 µm or more) is deteriorated or the wear of the tool is severe, there is a problem in that the formation of the partition wall forming groove 15 is impossible.

In consideration of the fact that the wear amount of the bites 12a and 12b is 0.1 to 0.5 µm / Hr, when the low-speed machining is performed to reduce the wear of the bites 12a and 12b, the machining time becomes long, and the bite 12a , The number of exchanges of the 12b) is also frequent, and the maintenance cost of the bytes 12a and 12b is considerably consumed.

In particular, the large sized workpieces 11 and 14 of 40 " or more have a problem in that mold processing using the bites 12a and 12b is impossible, and the initial investment of the processing equipment is consumed considerably in order to perform the mold processing.

The present invention has been made to solve the above problems of the prior art, the object of which is to reinforce the hardness and strength to extend the life of the mold work for forming the groove of the display means and accordingly grinding using a grinding wheel in the form of a disk Not only does the degree of freedom of selection of the material of the mold improve, but the grooves in the mold are easily changed in the form of strips, waffles, pyramids, etc., and can be applied to all molds regardless of the area or shape of the mold. To provide a mold manufacturing system that can be.

In addition, another object of the present invention is to not only reduce the machining time but also to minimize the amount of wear of the grinding wheel by using a plurality of spaced apart by placing the grinding wheel in consideration of the pitch between the grooves per line, thereby the shape of the groove of the mold In addition to the uniformity and to provide a mold manufacturing system that can improve the surface roughness.

Another object of the present invention is to provide a mold manufacturing system that can be attached to the camera photographing the degree of wear of the grinding wheel to be able to recognize the wear and wear of the tool in the system and at the same time can be processed grooves of uniform depth. have.

1 is a perspective view showing the configuration of a punch manufacturing system in the form of a plate according to the prior art,

Figure 2 is a view showing the configuration of a punch manufacturing system in the form of a roll according to the prior art,

3 is an enlarged view of 'A' and 'B' of FIGS. 1 and 2;

4 is a view showing a configuration of a punch manufacturing system for forming a partition wall according to the prior art,

5 is a view showing a machining portion of a workpiece in which a groove for forming a partition wall is formed according to a machining direction by using a bite as a component of FIG. 4;

Figure 6a is a front view (a) and side views (b) and the shape (c) of the partition wall forming grooves by the bite during the initial processing of the bite which is a component of Figure 4,

6B is a view showing a front view (a), a side view (c), and a broken shape (c) during the middle and end machining of some components of FIG. 4;

7 is a perspective view showing the configuration of a mold manufacturing system according to the present invention;

FIG. 8 shows a spin table mounted on a table which is a part of FIG. 7 to form a primary machining state (a), a secondary machining state (b) after a 90 degree rotation, and partition forming grooves by primary and secondary machining. The figure in which the shape c is shown,

FIG. 9 is a plan view (a), side view (b) of a grinding wheel, which is a part of FIG. 7, a detail view of a grinding edge (c), and a shape (d) of a partition forming groove formed by the grinding wheel,

10 is a perspective view showing another embodiment of the grinding wheel drive which is a component of FIG.

11 is a perspective view (a) showing another embodiment of the grinding wheel drive unit which is a part of FIG. 7, a grinding state (b) of the mold workpiece by the grinding wheel drive unit,

12 is a perspective view showing another embodiment configuration of a mold manufacturing system according to the present invention;

FIG. 13 is a view illustrating a mold for forming a partition wall of a pyramid shape manufactured by FIGS. 7 and 12.

<Explanation of symbols on main parts of the drawings>

50, 51: Molded workpieces 55, 55 ': Bulkhead forming groove

61, 63: table, spin table 70: grinding wheel drive unit

71, 72, 73: grinding wheel 75: mandrel

81, 83, 85: X, Y, Z axis robot 91, 93: Fixture

According to a feature of the mold manufacturing system according to the present invention for solving the above problems, a plurality of molding grooves are formed to form grooves in the display panel and at the same time to maintain the shape of the molding grooves hardness and strength reinforcing material The mold workpiece formed of the mold, a table on which the mold workpiece is placed and fixed at a machining position, and a grinding wheel driving unit installed on an upper portion of the table and configured to perform a vertical groove in order to form a molding groove on an upper surface of the mold workpiece And an X-axis robot installed on the axial axis of the table to move the grinding wheel drive part a predetermined distance in the axial direction so that pitch adjustment between molding grooves is performed, and the lateral axis of the table is orthogonal to the axial axis robot. A y-axis robot installed on an axis to move the grinding wheel driving unit left and right so that a molding groove is formed on an upper surface of the mold workpiece; As the axis perpendicular to the robot is provided on the Y-axis robot it is configured to include a Z-axis robot which vertically moves the grinding wheel drive unit.

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

FIG. 7 is a perspective view showing the configuration of a mold manufacturing system according to the present invention. Referring to the present invention, a display such as a reflective sheet of a plasma display panel, an LCD backlight, and a film prism road sign is first shown. Applied to a metal mold for forming grooves of various forms of the means, in particular the metal mold for forming the grooves for forming the partition wall of the plasma display panel as an example.

Next, the present invention provides a mold workpiece 50 in which the partition wall 55 is formed, a table 61 on which the mold workpiece 50 is loaded and fixed at a machining position, and an upper portion of the mold workpiece 50. X-axis robot that is moved up, down, left, and right in order to form the grooves 55 for forming the partition wall, and is installed on the X axis of the table 61 to move the grinding wheel drive part 70 in the X axis direction. (81), the Y-axis robot 83 for moving the grinding wheel driver 70 in the Y-axis direction while being orthogonal to the X-axis robot 81, and the grinding wheel driver while being orthogonal to the Y-axis robot 83 ( 70 is composed of a Z-axis robot 85 for moving in the Z-axis direction. Here, the X-axis robot 81, the Y-axis robot 83, and the Z-axis robot 85 are each linear guides installed in the corresponding axis direction. And a linear motor to move the grinding wheel driver 70 in the X-axis direction, the Y-axis direction, and the Z-axis direction. . The configuration of the robots 81, 83, 85 for each axis is a very general configuration, and can be applied regardless of the configuration as long as the grinding wheel drive unit can be moved in each axial direction.

Here, the mold workpiece 50 is made of a variety of materials, such as steel or metal mold brass so that the strength and hardness can be reinforced to compensate for the disadvantage that the existing copper material, the mold is weak in strength and hardness, so the life is small. By selecting one is formed to extend the life of the mold.

In addition, although the table 61 may be formed in a fixed shape, as shown in FIG. 8, a spin table 63 capable of rotating by ± 90 degrees may be mounted on the table 61. Accordingly, the mold workpiece 50 is placed on the spin table 63 as shown in FIG. 8 (a), and is primarily formed in a strip-shaped partition wall forming groove by the polishing wheel drive unit 70 in the A1 direction. After the 55 is formed, the partition wall is formed by the secondary polishing wheel drive unit 70 in the A2 direction so as to be orthogonal to the partition forming grooves 55 and 55 'formed by being rotated 90 degrees as shown in (b). The molding groove 55 'is processed.

By rotating the spin table 63 by 90 degrees, as shown in FIG. 8C, a waffle-shaped partition wall forming groove 55 ′ is formed on the mold workpiece 50.

On the other hand, the grinding wheel drive unit 70 is a disk-shaped grinding wheel 71 in which a grinding hole 71b having a shape corresponding to the partition wall forming groove 55 is formed at the edge while the fixing hole 71a is formed at the center thereof. And, it is composed of a mandrel 75 is inserted into the fixing hole 71a of the grinding wheel 71 to rotate in a predetermined direction while the grinding wheel 71 is fixed.

In particular, the present invention by photographing the degree of wear of the grinding wheel 71 in the grinding wheel driving unit 70 attached to the Z-axis robot 85 and transfer it to the system, the wear recognition and correction of the grinding wheel 71 is accurately A camera (not shown) is installed which can be performed.

In one example, the grinding wheel 71 has a constant diameter (B1) as shown in (a), (b), (c) of Figure 9 while the depth of the partition wall forming groove 55 in the edge portion And the grinding edge 71b is formed by the width. That is, the grinding blade 71b is formed to be narrowed at the angle of θ toward the end as shown in FIGS. (B) and (c), the width of which is narrowed from B2 to B3.

Referring to FIG. 9D, the partition wall forming grooves 55 processed by the grinding wheel 71 are formed while the partition wall forming grooves 55 have a constant depth by the grinding blade 71b. It can be seen that the upper width is B2, and the lower side thereof is B3. In this case, the shape of the grinding blade 71b of the grinding wheel 71 may be variously formed according to the shape of the partition wall forming groove 55 to be molded, including the example shown in FIG. 9.

In addition, as shown in FIG. 10, a plurality of grinding wheels 72 having the same shape and diameter are spaced apart from each other at intervals corresponding to the pitch between the grooves 55 for forming a partition. The machining time may be saved by the number of the grinding wheels 72 attached to 75).

On the other hand, in order to minimize the wear of the grinding wheel 73, as shown in Figure 11 so that the grinding is repeatedly performed several times in the order of initial, middle, and end grinding until the final partition forming groove 73c 'is completed. A plurality of grinding wheels 73a, 73b, and 73c having different diameters may be attached to the mandrel 75. That is, as shown in FIG. The first to third grinding wheels 73a, 73b, and 73c having smaller diameters are attached. The first grinding wheel 73a is subjected to rough initial grinding, and the second grinding wheel 73c is subjected to intermediate grinding. The three grinding wheels 73c perform the final grinding process for the final partition wall forming grooves 55.

Accordingly, as shown in FIG. 11B by the first to third grinding wheels 73a, 73b, and 73c, the mold workpiece 50 corresponds to the respective grinding wheels 73a, 73b, and 73c. An initial grinding groove 73a ', a medium grinding groove 73b', and a final partition groove 73c 'are formed, and then the first to third grinding wheels 73a, 73b, 73c are defined. It is moved by pitch and the initial grinding process is performed at the point where the next partition wall forming groove is to be processed, the medium grinding process is performed at the initial grinding groove 73a ', and the final partition wall forming groove 73c' is at the medium grinding groove 73b '. A final grinding process is performed.

As such, the first to third grinding wheels 73a, 73b, and 73c move by the pitch between the partition wall forming grooves and repeat the initial, middle, and end grinding operations, thereby causing wear of the grinding wheels 73a, 73b, and 73c. It can be minimized.

The X, Y, and Z-axis robots 81, 83, and 85 use a linear scale or a laser optical system for precise position control for precise pitch adjustment between partition grooves.

In the above description, the mold-form 50 in the form of a plate is described as the center, but as shown in FIG. 12, one side of the table 61 has fixing bars 91 and 93 formed at both ends of the table in the Y-axis direction, respectively. The mold workpiece 51 in the form of a roll is placed and fixed to the holders 91 and 93.

At this time, in order to process the partition wall forming groove in the roll-shaped mold workpiece 51, the pitch between the partition wall forming grooves is adjusted by the Y-axis robot 83 and the grinding wheels 71, 72, 73 are X It will be rotated in the axial direction.

Operation of the present invention configured as described above, the mandrel (75) attached to the Z-axis robot 85 after first fixing the plate-shaped mold workpiece 50 in the machining position of the table (61, 63). The grinding wheels 71, 72, 73 corresponding to the shape of the partition wall forming grooves 55, 55 'to be molded are mounted on the grooves.

Thereafter, in the system, the grinding wheel driver 70 is set to be at the machining start position above the tables 61 and 63, and the grinding wheel driver 70 is lowered by the Z-axis robot 85 before grinding. The wheels 71, 72, and 73 are transferred in the Y-axis direction using the Y-axis robot 83 to form the partition forming grooves 55, 55 '.

In the above, when one line for forming the partition wall is completed on the mold workpiece 50, the system raises the grinding wheel driver 70 using the Z-axis robot 85, and then moves the grinding wheel driver 70 to the next. After moving one pitch by the X-axis robot 81 to the machining start position of the line, the grooves 55 and 55 'for forming the partition walls are processed by the Z-axis and Y-axis robots 85 and 83.

When the partition wall forming grooves 55 and 55 'are completed on the mold workpiece 50 in this manner, the partition wall molds are detached from the tables 61 and 63.

On the other hand, the die-shaped workpiece 51 in the form of a roll is also inserted into and fixed to the holders 91 and 93 of the table 61, and then the pitch is adjusted by the Y-axis robot 83, so that the grinding wheel drive unit 70 moves in the X-axis direction. Rotate to produce a mold for forming the partition wall by one line.

As shown in FIG. 13, the pyramid-shaped partition wall forming mold 53 adjusts the grinding blade 71b in the grinding wheel drive unit 70 toward the C1, C2, and C3 directions, and then performs the machining process three times. Can be prepared, where C1 and C2, C2 and C3 are each tilted at a 60 degree angle. Alternatively, the pyramid-shaped partition wall forming mold 53 may be manufactured by performing a machining process in the C1, C2, and C3 directions each time while rotating the spin table 63 by 60 degrees three times.

In this way, the partition sheet forming mold manufacturing system rotates the spin table 63 at a predetermined angle or adjusts the angle of the grinding blade 71b by using the grinding wheel drive unit 70 to process the groove for forming the partition wall a certain number of times. By repeatedly performing, various types of molds for partition wall forming are manufactured.

The mold manufacturing system of the present invention configured as described above has a hardness and strength so as to prolong the life of the mold work for forming the groove of the display means, and accordingly, the grinding process using the grinding wheel in the form of a disk is applied to the material of the mold. In addition to improving the degree of freedom of selection, the grooves in the mold can be easily changed in shape in the form of stripe, waffle, pyramid, etc., and can be applied to all mold workpieces regardless of the area or shape of the mold workpiece.

In addition, the present invention, by using a plurality of spaced apart grinding wheels in consideration of the pitch between the grooves per line, not only reduce the processing time but also minimize the amount of wear of the grinding wheel, thereby making the groove shape of the mold uniform In addition, the surface roughness can be improved, and a camera for photographing the wear level of the grinding wheel can be attached to enable the system to recognize and compensate for the wear of the tool and to process a groove with a uniform depth. There is also.

Claims (11)

A plurality of molding grooves are formed on the display panel to form a partition wall, and a mold workpiece formed of a hardness and strength reinforcing material to maintain the shape of the molding groove, a table on which the mold workpiece is fixed at a machining position; The grinding wheel drive unit is installed on the upper part of the table and performs up, down, left and right movements to form a molding groove on the upper surface of the mold, and a pitch adjustment between the groove for molding is installed on the Ｘ axis of the table. X-axis robot to move the grinding wheel drive a predetermined distance in the y-axis direction to be carried out, and the grinding wheel drive unit is installed on the y-axis of the table while being orthogonal to the y-axis robot to form a forming groove on the upper surface of the mold workpiece An axial axis robot that moves left and right, and is installed on the axial axis robot while being orthogonal to the axial axis robot, so that the grinding wheel driving unit is moved up and down The mold manufacturing system, characterized in that configured to include a Z-axis robot. The method of claim 1, In the mold manufacturing system, a table is divided into two regions, and a plate-shaped mold workpiece is fixed in one region, and the grinding wheel driving unit is rotated in the axial direction at the same time as the pitch of the grinding wheel is adjusted by the axial axis robot. The mold manufacturing system, characterized in that the grinding wheel drive unit is pitch-adjusted by the y-axis robot and rotates in the y-axis direction, respectively, while fixing rods are formed at both ends in the y-axis direction so that a roll-shaped mold workpiece is inserted and fixed. . The method of claim 1, The mold workpiece is a mold manufacturing system, characterized in that formed by the iron member or the mold brass. The method of claim 1, The table is a mold manufacturing system, characterized in that a spin table that can be rotated at an angle according to the shape of the molding groove to be formed. The method of claim 4, wherein The spin table is primarily rotated in a direction orthogonal to the primary processing direction after the forming groove is processed so that the forming groove is processed secondary to form a waffle-shaped forming groove. Mold manufacturing system. The method of claim 4, wherein The spin table is first rotated in a direction inclined at 60 degrees with the primary processing direction after the forming groove is processed so as to be rotated in a secondary process and a direction inclined at 60 degrees with the secondary processing direction so that tertiary processing is performed. Mold forming system, characterized in that to form a pyramid-shaped forming groove. The method of claim 1, The grinding wheel driving unit is formed in a circular shape having a predetermined diameter while the center is opened, and a grinding wheel having a grinding blade having a shape corresponding to the forming groove at an edge portion thereof, and is fitted in the center of the grinding wheel to fix the grinding wheel. And a mandrel (Mendrel) which is moved to a machining point of the mold by the robot of the X, X, and X axes so as to rotate in a predetermined direction. The method according to claim 1 or 7, The mold manufacturing system, characterized in that the camera is installed on the y-axis robot so as to photograph the wear level of the grinding wheel in the processing direction of the molding groove to perform the wear recognition and correction of the grinding wheel in the system. The method according to claim 1 or 7, The grinding wheel drive unit is a mold manufacturing system, characterized in that a plurality of grinding wheels having the same diameter are spaced apart from each other at intervals corresponding to the pitch between the forming groove is mounted on the mandrel. The method according to claim 1 or 7, The grinding wheel drive unit is a plurality of grinding wheels are spaced at intervals corresponding to the pitch between the grooves for forming so that the diameter gradually decreases from the inner side to the outer side of the mandrel, the final forming groove is formed by the sequential grinding process Mold manufacturing system. The method according to claim 1 or 7, The grinding wheel driving unit is a mold manufacturing system, characterized in that for changing the shape of the groove for forming by varying the machining angle between the grinding wheel and the mold workpiece to perform a plurality of machining process.