JPH11302028A - Scribing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scribing device capable of forming a uniform scribe line even if there is a variation in the thickness of a glass substrate and the levelness of a scribe rail or scribe table without executing resetting of an origin even if the lot on machine model changes. SOLUTION: This scribing device has the scribe table 32 which attracts and holds the glass substrate 40 and a scribe head 36 which forms the scribe line on the glass substrate 40 held on the scribe table 32 while moving a cutter wheel chip 44 along the scribe rail 34 at a prescribed edge pressure and depth of cut. The scribe head 36 has a profiling mechanism for moving the cutter wheel chip 44 so as to profile the surface of the glass substrate 40 in contact with the surface of the glass substrate 40 near the cutter wheel chip 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a scribe device, and more particularly to a scribe device for a glass substrate of a liquid crystal display panel.

[0002]

BACKGROUND OF THE INVENTION In general,
When a glass substrate used for a liquid crystal display panel is cut, the glass substrate is cut using a scribe device.

FIG. 5 schematically shows a scribe device. This scribe device 10 includes a scribe table 14 for holding a glass substrate 12 by vacuum suction and a scribe table horizontally disposed above the scribe table 14. It has a rail 16 and a scribe head 18 that can be horizontally moved along the scribe rail 16 on the scribe table 14 by a driving unit (not shown).

[0004] The scribe head 18 has a cutter wheel chip 22 held at a tip end by a chip holder 20, and a glass substrate 1 of the cutter wheel chip 22.
The cutting amount of the cutting wheel 2 can be adjusted by a pulse motor 24, and the pressure of the cutting edge of the cutter wheel chip 22 against the glass substrate 12 can be adjusted by an air cylinder 26.

[0005] A cutter wheel chip 22 is pressed against the surface of the glass substrate 12, and the scribe head 18 is pressed.
Are moved along the scribe rail 16 so that scribe lines 28 can be formed on the surface of the glass substrate 12 as shown in FIG.

In forming a scribe line on the surface of the glass substrate 12, a cutter wheel chip 22 is pressed against a certain point on the surface of the glass substrate 12 as shown in FIG. The point X is defined as the origin 0, and the cutting amount L and the cutting edge pressure P are set based on the origin 0, and the scribe rail 1 is kept at a fixed value.
The cutter wheel chip 22 is moved along 6.

However, with such setting of the cutting amount L and the blade edge pressure P based on the origin search, the scribe table 14 is kept horizontal and the glass substrate 12
Is constant, the cut amount L is constant,
The cutting edge pressure P is also constant as shown in FIG. 7B, but if the scribe table 14 is tilted or if the thickness of the glass substrate 12 varies as shown in FIG.
As shown in FIG. 8B, the cutting amount L and the blade edge pressure P are not constant, so that a uniform scribe line cannot be formed.

[0008] Such a problem is caused by the scribe table 1
This is caused not only by the inclination of 4 and the variation of the thickness of the glass substrate 12, but also by the variation of the horizontality of the scribe rail 14.

When the origin is set as described above, the origin must be set every time the lot or the model is changed, which is troublesome.

An object of the present invention is to provide a uniform scribe line even if the thickness of a glass substrate or the horizontality of a scribe rail or a scribe table varies, without resetting the origin even when the lot or the model is changed. It is an object of the present invention to provide a scribe device that can form a scribe.

[0011]

In order to achieve the above object, an invention according to claim 1 is a scribe table for adsorbing and holding a glass substrate, and a scribe rail for cutting a cutter wheel chip with a predetermined cutting edge pressure and a cutting amount. A scribe head that forms a scribe line on the glass substrate held on the scribe table while moving along the scribe table, wherein the scribe head abuts on the surface of the glass substrate near the cutter wheel chip. A copying mechanism is provided for copying and moving the cutter wheel chip following the surface of the glass substrate.

According to the present invention, since the copying mechanism moves the cutter wheel chip along the surface of the glass substrate, the scribe is always performed with the surface of the glass substrate as a reference at the time of scribing. By setting the cutting edge pressure, it is possible to form a uniform scribe line without resetting the origin even if the lot or model is changed, and it is possible to save the trouble of resetting the origin. In addition, a uniform scribe line can be formed even if the thickness of the glass substrate or the horizontality of the scribe rail or scribe table varies.

According to a second aspect of the present invention, in the first aspect, the copying mechanism is provided so as to be able to copy and move integrally with the cutter wheel tip.

According to the present invention, since the cutter wheel chip moves integrally with the copying mechanism, the cutter wheel tip can be linked by a simple mechanism without requiring an interlocking mechanism, which leads to a reduction in cost. .

According to a third aspect of the present invention, in the second aspect, the cutter wheel chip has a fixed cutting amount with respect to the glass substrate, and the cutter wheel chip and the copying mechanism are fixed with respect to a surface of the glass substrate. And a predetermined blade edge pressure is applied.

According to the present invention, since the cutting amount is fixed, the scribe condition can be set by an easy and simple mechanism by adjusting only the blade edge pressure.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the copying mechanism is characterized in that a contact portion with the surface of the glass substrate is formed as a sliding contact portion. .

According to the present invention, the copying operation can be performed with a simple structure by sliding the surface of the glass substrate with the sliding portion, and the cost can be reduced.

According to a fifth aspect of the present invention, in any one of the first to third aspects, the copying mechanism has a roller at a portion in contact with the surface of the glass substrate.

According to the present invention, a smooth copying operation can be performed by rolling the roller on the surface of the glass substrate.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a scribe device according to an embodiment of the present invention.

As shown in FIG. 1, the scribe device 30 includes a scribe table 32 and a scribe rail 3.
4 and a scribe head 36.

The scribe table 32 has an upper surface 38 disposed in a horizontal state, and a glass substrate 40 is held on the upper surface 38 by vacuum suction.

The scribe table 32 is rotatable horizontally so that, for example, scribe lines intersecting the glass substrate 40 at right angles can be formed.

The scribe rail 34 is horizontally arranged above the scribe table 32 and has a scribe head 3.
6 is held in a hanging state.

The scribe head 36 is horizontally movable on the scribe table 32 along the scribe rail 34 by a driving means (not shown).

The scribe head 36 has a cutter wheel tip 44 held by a tip holder 42 at its tip, and the cutter wheel tip 44 can be moved along the surface of the glass substrate 40 by a copying mechanism 46. .

The copying mechanism 46 includes a gate-shaped copying member 48,
And a cylinder 50.

The copying member 48 has a semicircular sliding contact portion 52 at both lower ends of the gate, which abuts on the surface of the glass substrate 40 near the cutter wheel chip 44 and slides along the surface of the glass substrate 40. (See FIG. 2).

Therefore, the copying operation can be performed with a simple structure, and other components are not required, so that the cost can be reduced.

The cylinder 50 is provided so as to be able to move horizontally along the scribe rail 34, and the copying member 48 is provided.
The sliding member 52 is brought into contact with the surface of the glass substrate 40 to hold the copying member 48 so as to be vertically movable.

The cutter wheel tip 44 is integrated with the copying member 48 via a cylinder 54 attached to the tip holder 42 and a pulse motor 56 attached to the upper part of the cylinder 54, and moves up and down with the copying member 48. , Cutter wheel chip 44 is also glass substrate 4
It moves up and down following the surface of the zero.

The pulse motor 56 is used for adjusting the cutting amount of the cutter wheel chip 44.

The cylinder 54 is used for adjusting the cutting edge pressure of the cutter wheel tip 44.

Thus, the sliding portion 52 of the copying member 48 is brought into contact with the surface of the glass substrate 40, and the scribe rail 3
4 along the copying member 48 and the cutter wheel tip 4
4 is moved horizontally, so that the copying member 48 and the cutter wheel chip 4 are moved with respect to the surface of the glass substrate 40.
4 follows the surface of the glass substrate 40 by the cylinder 50 and moves integrally along the vertical direction.

Therefore, the cutter wheel chip 44
With this configuration, it is possible to form a uniform scribe line on the surface of the glass substrate 40 while reliably maintaining the cutting amount and the cutting edge pressure set by the pulse motor 56 and the cylinder 54.

As one example, FIG. 3A shows a state in which a glass substrate 40 having a variation in thickness is scribed. The thickness of the glass substrate 40 is gradually reduced from the left side to the right side in the drawing, and the glass substrate 40 is fixed to the scribe table 32 by suction and is lowered rightward in the drawing.

In this state, the cutter wheel chip 44
Is set to the cutting amount L1 and the cutting edge pressure P1, and the copying member 4 is set.
8 and the cutter wheel chip 44 are brought into contact with the surface of the glass substrate 40 and are moved along the scribe rail 34, so that the copying member 48 follows the surface of the glass substrate 40 in a downward-sloping state. , The cutter wheel tip 44 also follows this integrally.

Therefore, even though the surface of the glass substrate 40 is inclined downward to the right, a constant cutting amount L1 is always maintained, and as shown in FIG. Since the pressure P1 is maintained, a uniform scribe line can be formed.

FIG. 4 is a front view showing a scribe device according to another embodiment of the present invention.

The scribing device 60 includes a pair of scribe rails 66 on the device body 64 on both sides of the glass substrate 40 which is vacuum-adsorbed on the scribe table 62.
Are arranged in parallel.

A slide member 70 slidably engaged with the scribe rail 66 at both ends via a guide block 68 is suspended between the scribe rails 66.
Drive means (not shown) enables horizontal movement along the scribe rail 66.

A cylinder 72 is attached to the slide member 70 at a substantially central position, and a scribe head 74 is attached and supported below the cylinder 72.

The scribe head 74 has a copying mechanism 76 and a cutter wheel tip 78 integrated with each other.

Specifically, the copying mechanism 76 includes the cylinder 7
2, and a roller 82 attached to both lower ends of the copying member 80,
The cutter wheel tip 78 is integrally attached to the copying member 80 via a tip holder 84.

The cutter wheel tip 78 is fixed between the cutter wheel tip 78 and the roller 82 with the cut amount L2 set.

Therefore, the cutter wheel chip 78 is brought into contact with the surface of the glass substrate 40 on the scribe table 62, and the cutter wheel chip 78 is pressed by the cylinder 72 until a predetermined cutting edge pressure is reached. By applying a sufficient urging force to imitate the surface, a predetermined cutting amount L2 and blade edge pressure can be easily obtained, and a uniform scribe line can be formed.

Further, since the copying member 80 copies the surface of the glass substrate 40 via the roller 82, the copying operation can be performed smoothly.

The present invention is not limited to the above embodiments, but can be modified into various forms within the scope of the present invention.

For example, in each of the above embodiments, the case where the scribe head is moved along the scribe rail has been described, but a plurality of scribe lines are formed on the glass substrate by being movable in a direction orthogonal to the scribe rail. You can also do so.

[Brief description of the drawings]

FIG. 1 is a front view showing a scribe device according to an embodiment of the present invention.

FIG. 2 is a side view of the scribe device of FIG. 1 as viewed from a position indicated by arrows II-II in FIG. 1;

FIG. 3A is an explanatory view showing a state of scribing a glass substrate having a variation in thickness using the scribing apparatus according to the present embodiment, and FIG. 3B is a diagram showing a cutting edge pressure at the time of scribing in FIG. FIG.

FIG. 4 is a front view showing a scribe device according to another embodiment of the present invention.

FIG. 5 is a schematic view showing a scribe device according to the background art.

FIG. 6 is a schematic explanatory view showing a state where a scribe line is formed using the scribe device of FIG. 5;

FIG. 7A is an explanatory view showing a state in which a glass substrate having a uniform thickness is adsorbed on a horizontal scribing table and scribing is performed, and FIG. 7B is a cutting edge pressure at the time of scribing in FIG. FIG.

FIG. 8A is an explanatory diagram showing a state in which a glass substrate having an uneven thickness is scribed, and FIG. 8B is an explanatory diagram showing a blade edge pressure at the time of scribe in FIG.

[Explanation of symbols]

 30, 60 scribe device 32, 62 scribe table 34, 66 scribe rail 36, 74 scribe head 40 glass substrate 42, 84 chip holder 44, 78 cutter wheel chip 46, 76 copying mechanism 48, 80 copying member 52 sliding contact part 82 roller

Claims (5)

[Claims] A scribing table for adsorbing and holding a glass substrate; and a scribe line formed on the glass substrate held by the scribe table while moving a cutter wheel chip along a scribe rail with a predetermined cutting edge pressure and a cutting amount. A scribing apparatus including a scribing head to be formed, wherein the scribing head includes a copying mechanism that abuts on a surface of the glass substrate near the cutter wheel chip and moves the cutter wheel chip according to the surface of the glass substrate. A scribe device characterized by the above-mentioned. 2. The scribing device according to claim 1, wherein the copying mechanism is provided so as to be able to copy and move integrally with the cutter wheel tip. 3. The cutter wheel chip according to claim 2, wherein a cutting amount of the cutter wheel chip with respect to the glass substrate is fixed, and the cutter wheel chip and the copying mechanism are pressed against a surface of the glass substrate with a predetermined pressure. A scribing device to which a predetermined cutting edge pressure is applied. 4. The scribing device according to claim 1, wherein the copying mechanism has a contact portion with a surface of the glass substrate formed as a sliding contact portion. 5. The scribing apparatus according to claim 1, wherein the copying mechanism includes a roller at a portion where the copying mechanism contacts a surface of the glass substrate.