KR20030035616A - A head stock for manufacturing the upper mold of a polarizing prism - Google Patents

Abstract

PURPOSE: A head stock for processing an upper mold of a polarizing plate metal mold is provided to reduce surface roughness of a bending groove part by absorbing vibration continuously generated when a bite executes a process, thereby minimizing inferiority of a polarizing plate. CONSTITUTION: A fixed part(31) is fixed at an end of a main shaft mounting part, and through which a screw shaft(312) rotated by a Z-axis motor passes. A Z-axis moving part(32) is mounted at the screw shaft to move in a Z-axis direction and has a vibration absorbing groove part(322) absorbing vibration of a bite holder(33) at a lower part of a front surface. The bite holder is mounted at the front surface of the Z-axis moving part and in front of the vibration absorbing groove part, has a vibration absorbing groove(331) of which a rear is opened, and has a vertical bite mounting hole(332) inside the lower part.

Description

Headstock for manufacturing upper mold of polarizing plate molding mold {A head stock for manufacturing the upper mold of a polarizing prism}

The present invention relates to a headstock for processing an upper mold of a polarizing plate molding die, and more particularly, by forming a bent groove through a cutting process on the flat surface of the upper mold constituting the mold, thereby reducing the surface roughness of the bent groove to be processed to a minimum. The headstock for upper mold | die processing of the polarizing plate shaping | molding die which can be provided.

In general, a liquid crystal display device is used in a portable telephone, a portable information terminal, a notebook, a monitor, and the like.

Accordingly, the liquid crystal display device includes a transparent electrode stacked on top and bottom substrates and a liquid crystal layer, and a polarizing plate mounted on an upper surface of the upper substrate.

In particular, a curved portion having a predetermined pattern is formed on one surface of the polarizing plate.

Accordingly, the present invention relates to a mold manufacturing apparatus for molding the polarizing plate. First, a manufacturing process of a conventional mold will be described.

First, the surface of the upper and lower dies are processed into a flat surface, and the plated surface formed on the upper die is plated with nickel to form a curved groove through dissolution corrosion (chemical processing and electroless processing). In particular, in forming the bent groove portion, a chemical treatment apparatus required for chemical processing is used.

However, in forming the bent groove on the upper surface through the chemical processing (electroless processing) as described above, bubbles are formed on the surface of the bent groove due to the chemical reaction, so that the surface of the bent groove becomes rough as the tissue becomes unstable. It had a problem which causes the defect of a polarizing plate.

In addition, as the bent groove is formed through nickel, wear of the bent groove easily occurs, thereby reducing the life of the mold.

In addition, by processing the surface of the mold through chemical processing, there was a problem that pollutes the environment due to the waste water discharged from the chemical device.

Accordingly, the present invention has been invented to solve the above problems, by forming a bent groove through the cutting process on the flat surface of the upper mold constituting the mold, the polarizing plate which can lower the roughness of the surface of the bent groove to be processed to a minimum An object of the present invention is to provide a headstock for forming an upper mold of a molding die.

In addition, by forming a vibration absorbing groove portion in the middle of the bite holder, it is also intended to precisely process the surface of the curved groove portion to be processed by absorbing the vibration generated continuously at the moment of processing the bite in the vibration absorbing groove portion.

In addition, by providing a guide bar on one side of the main shaft to precisely move the Z-axis of the bite, there is also an object capable of enabling ultra-precision machining.

In addition, the curved groove of the upper die is formed by cutting, so that the surface hardness of the curved groove has the same hardness as the material of the upper die, thereby minimizing the wear phenomenon on the surface of the curved groove.

The present invention for achieving the above object is a work comprising a table mounted to the upper mold constituting the mold and moved to the X-axis, a spindle mounting portion moved to the Y-axis, and a spindle head mounted on the end of the spindle mounting portion. In the machine; The headstock is fixed to the end of the main shaft mounting portion, the screw shaft is rotated by the Z-axis motor penetrates through the center, and is mounted to the screw shaft is moved in the Z-axis direction and the front lower portion of the vibration of the bite holder A Z-axis moving part having a vibration absorbing groove to absorb, and a vibration absorbing groove which is mounted on the front of the Z-axis moving part and the front of the vibration absorbing groove, and has an open rear in the middle, and the vibration inside the lower side. It is characterized in that it comprises a byte holder is formed with a vertical bite mounting hole penetrating the absorption groove, and a guide portion which is mounted on one side of the fixing portion and the bite holder to guide the Z-axis movement of the bite holder.

1 shows a conventional polarizing plate,

1A is a perspective view,

FIG. 1B is a cross-sectional view taken along the line A-A of FIG. 1A.

2 shows a headstock according to the present invention,

2A is a front view,

2b is a plan view,

FIG. 2C is a cross-sectional view taken along the line B-B in FIG. 2A.

Figure 3 is a schematic diagram showing one embodiment of a bite mounted on the headstock of the present invention.

4 to 6 is a schematic diagram showing the operating relationship of the present invention.

Explanation of symbols for main parts of the drawings

1: spindle mounting part

2: table

3: headstock

31: fixed part

311: Z axis motor, 312: screw shaft

32: Z axis moving part

321: front, 322: vibration absorption groove

33: byte holder

331: vibration absorbing groove, 332: bite mounting hole

4: guide part

41: bracket

411 vertical groove

42: scale diaphragm

421 scale

43: fixing bracket

44: moving table

441: vertical groove, 442: front plate, 443: rear plate

5: Pictograph

6: byte

61: machining part

611,612: inclined surface

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 1 illustrates a conventional polarizing plate, and FIG. 1A is a perspective view, and FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A, and a polarizing plate 100 which is commonly used has a plurality of refractive protrusions 101 at equal intervals on one surface thereof. The refracting protrusion 101 is formed by pairing two inclined surfaces 102 and 103 having opposite inclinations with each other.

Accordingly, the present invention relates to a headstock for processing the flat surface of the upper mold in the mold for producing the polarizing plate.

Therefore, FIG. 2 shows a headstock according to the present invention, FIG. 2A shows a front view, FIG. 2B shows a plan view, and FIG. 2C is a sectional view taken along the line B-B of FIG. 2A.

The upper mold 5 constituting the mold is mounted and the table 2 moved on the X axis, the spindle mounting part 1 moving on the Y axis, and the headstock 3 mounted on the end of the spindle mounting part 1 are mounted. In a machine tool comprising;

The headstock 3 is fixed to the end of the main shaft mounting portion 1, the fixing portion 31 through which the screw shaft 312 rotated through the Z-axis motor 311 through the center, and the screw shaft ( Z-axis moving part 32 which is mounted on the 312 and is moved in the Z-axis direction and the lower portion of the front surface 321 is formed with a vibration absorbing groove 322 for absorbing the vibration of the bite holder 33, and the Z-axis movement It is mounted in front of the front portion 321 and the vibration absorbing groove 322 of the part 32 is formed in the middle of the inner side of the vibration absorbing groove 331 is formed in the rear, the lower side inside the vibration absorbing groove 331 and It is characterized in that it consists of a bite holder 33, the vertical bite mounting hole 332 is formed through.

Therefore, the surface roughness of the curved groove portion to be processed can be lowered by absorbing the vibration generated continuously at the moment when the bite mounted on the bite holder 33 performs the machining in the vibration absorbing groove portion 322.

In particular, as shown in Figure 2b, the inclined guide surface 31a is formed to be symmetrical in the vertical direction on both front sides of the fixing portion 31, the inclined guide surface behind the Z-axis moving portion 32 Since the inclined vertical surface 32a is formed to correspond to the inclined guide surface 31a so as to be in close contact with the 31a, it is possible to prevent the generation of transport vibration during the Z-axis movement of the bite.

As shown in FIGS. 2A and 2B, the fixing unit 31 and the side of the byte holder 33 guide the Z-axis movement of the byte holder 33 as well as a guide unit for sensing the position of the byte ( 4) is installed.

That is, the guide part 4 is fixed to one side of the fixing part 31, the bracket 41 is formed with a vertical groove portion 411 on the other front side, and through the fixing bracket 43 to the vertical groove portion 411 It is composed of a scale diaphragm 42 to be mounted, and a movable table 44 mounted on one side of the bite holder 33 to move on the scale diaphragm 42.

In the middle of the movable table 44, front and rear partition plates having vertical grooves 411 open at both sides are formed, and the front of the front plate is moved away from the rear of the scale diaphragm 42 at a fine interval. It is installed.

The movable table 44 is connected to the control unit is connected to the cable for detecting the position of the bite.

Fig. 3 is a schematic view showing one embodiment of the bite mounted on the headstock of the present invention, in which the bite 6 has a machined part 61 having two inclined machined surfaces 611, 612 at opposite inclinations. . That is, the processing portion 61 is molded in the same shape as the cross-sectional area of the bent protrusion formed in a predetermined pattern on the surface of the polarizing plate.

Hereinafter, the operational relationship of the present invention configured as described above are as follows.

As shown in Figs. 1 to 3, first, a bite 6 having a machining part 61 having two inclined machined surfaces 611 and 612 is mounted on the bite holder 33 of the headstock 3. . And the cutting operation of the upper mold 5 is prepared through a series of processes of fixing the upper mold 5 to the table 2 so that the flat surface of the upper mold 5 mounted on the upper surface of the table 2 protrudes upward.

After the cutting operation is prepared as described above, as shown in Figs. 4 to 6, first, the flat surface of the upper die (5) having two inclined surfaces (811,812) through the processing portion 61 A plurality of starting grooves 81 in the longitudinal direction are machined to a constant pitch.

Next, the bite with the same slope as the reference plane by using one of the inclined planes 811,812 constituting the start groove 81 for each repetitive machining of the byte from the first start groove 81 to the last start groove 81 By repeating the cutting in the longitudinal direction sequentially while adjusting the cutting depth by gradually moving the to bend the grooves 8 to be equal to the pitch (P) between the start grooves (81).

Therefore, in forming the bent groove 8 in the upper die 5, by adjusting only the amount of cut in the other inclined surface in the state in which the inclined surface of the bent groove 8 is a reference plane, the bent groove 8 is processed. As the surface roughness of the inclined surface as well as the other inclined surface can be reduced to a minimum, the curved surface can be precisely formed on the polarizing plate through the upper mold 5.

In addition, by forming the bending groove 8 by adjusting only the amount of cut as described above, the bending groove 8 having an ultra-precision can be easily processed.

The present invention as described above has the effect of injection molding a highly precise polarizing plate by minimizing the surface roughness in forming the bent groove portion on the flat surface of the upper mold constituting the mold.

In addition, by absorbing the vibration continuously generated at the moment of processing the bite in the vibration absorbing groove formed in the middle of the bite holder, it is possible to precisely process the surface of the bent groove to be processed, thereby minimizing the defect of the polarizing plate produced There is also an effect.

In addition, by attaching a guide bar on one side of the main shaft bar to enable the Z-axis movement of the bite to be precisely processed, the ultra-precision polarizing plate can also be produced.

In addition, as the curved groove of the upper die is formed through cutting, the surface hardness of the curved groove has the same hardness as the material of the upper die, thereby minimizing the wear phenomenon on the surface of the curved groove to maximize the life of the mold. .

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

Claims (5)

The upper mold 5 constituting the mold is mounted and the table 2 moved on the X axis, the spindle mounting part 1 moving on the Y axis, and the headstock 3 mounted on the end of the spindle mounting part 1 are mounted. In a machine tool comprising; The headstock 3, A fixed part 31 fixed to an end of the main shaft mounting part 1 and having a screw shaft 312 rotated by a Z-axis motor 311 through the center thereof; A Z-axis moving part 32 mounted to the screw shaft 312 and moving in the Z-axis direction, and having a vibration absorbing groove 322 formed at the lower portion of the front surface 321 to absorb the vibration of the bite holder 33; It is mounted in front of the front 321 and the vibration absorbing groove 322 of the Z-axis moving part 32, the inner side of the vibration absorbing groove 331 is formed in the rear and the vibration absorbing groove in the lower side A bite holder 33 in which a vertical bite mounting hole 332 penetrates 331 is formed, and The headstock for processing the upper mold of the polarizing plate molding mold, characterized in that it comprises a guide portion (4) mounted to one side of the fixing portion 31 and the bite holder 33 to guide the Z-axis movement of the bite holder (33). According to claim 1, The guide portion 4, the bracket 41 is fixed to one side of the fixing portion 31, the vertical groove portion 411 is formed on the other front side, and the fixed bracket on the vertical groove portion 411 A scale plate 42 mounted through the 41 and a movable plate 44 mounted on one side of the bite holder 33 to move on the scale plate 42 are formed. Headstock for upper die processing. According to claim 2, wherein the front and rear partition plate having a vertical groove 411 both sides are formed in the middle of the movable base 44, the front plate of the front plate and the back of the scale diaphragm 42 Headstock for processing the upper mold of the polarizing plate molding die, characterized in that mounted to move apart at a fine interval. The headstock processing head of the polarizing plate molding mold, characterized in that the cable is connected to the control unit to detect the position of the bite on the movable table (44). The inclined guide surface 31a is formed to be symmetrical in the vertical direction on both front sides of the fixing part 31, and the inclined guide surface 31a is located behind the Z-axis moving part 32. Headstock for processing the upper mold of the polarizing plate molding mold, characterized in that the inclined vertical surface (32a) is formed so as to be in close contact with the inclined guide surface (31a).