JP2001114524A - Processing machinery for glass plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing machinery for glass plates capable of carrying out good-quality grinding and precise cornering. SOLUTION: This processing machinery 1 for glass plate is equipped with a conveying means 5 for grasping both ends 3 and 4 of a glass plate 2 and conveying the glass plate in horizontal state, processing heads 8a, 8b, 8c and 8d for grinding both edge of the glass plate 2 conveyed by the conveying means 5 and a supporting means 11 for supporting the lower face 9 of the glass plate 2 and providing an endless belt 10 traveling in the same direction as conveying direction A of the glass plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for grinding an edge of a thin glass (thickness: 0.3 to 1.1 mm, usually square) used as a glass substrate for a liquid crystal display (LCD), or a method for cutting a corner thereof. The present invention relates to a processing machine for a glass sheet to be processed.

More specifically, the present invention relates to a processing apparatus in which the above-mentioned thin glass is made horizontal, the inner sides of the opposite edges are sandwiched by a conveyor belt or the like, and the thin glass is transported straight, and is disposed outside these opposite edges. The present invention relates to a glass sheet processing machine that simultaneously grinds both edges of a thin glass sheet or simultaneously cuts (corner cuts) both front and rear corners of the thin glass sheet.

[0003]

Recently, as the size of a liquid crystal display has increased, the size of the glass substrate has gradually increased (1200 mm × 1200 mm), while the thickness of the glass substrate has become thinner. In the grinding process, when the glass plate is held horizontally on both sides and transported horizontally, the glass plate is deflected downward at the center by its own weight and pressed by the grinding load from both sides, tilted at the edge to be processed, It becomes difficult to grind and corner-shape the shape.

Therefore, there is provided a glass sheet processing machine in which free rollers are arranged side by side along the traveling direction of the glass sheet at an intermediate portion between the conveyor belts, and the free rollers receive and support the center of the lower surface thereof as the glass sheet moves. Proposed.

However, even if the center of the lower surface of the glass plate is supported by the free roller, the rotation resistance of the free roller and the sliding resistance between the free roller and the glass plate based on the rotation resistance will cause the glass plate to lose its resistance. May not be conveyed with high accuracy, and therefore, the processing accuracy is deteriorated.

In order to obtain accurate processing, the glass sheet must be transported straight forward precisely. However, the conveyor belts on both sides for transporting the glass sheet while sandwiching both edges thereof are required to have a high manufacturing precision, a tension for hanging, and the like. Since the conditions are not the same as each other, even if they are mechanically and electrically driven synchronously, there is a difference in the conveyance speed of both edges of the glass sheet, and it becomes difficult for the glass sheet to be transported straight forward accurately. Under such circumstances, when the sliding resistance based on the rotation resistance of the free roller as described above is added, the glass sheet is eventually not straightly conveyed and is lamely fed, so that the glass sheet is inclined or small. As a result of being sent warped, but high quality grinding,
Precise cornering is not performed.

[0007] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to perform high-quality grinding and accurate cornering without causing the above-described inconvenience. An object of the present invention is to provide a glass sheet processing machine.

[0008]

According to a first aspect of the present invention, there is provided a glass sheet processing machine comprising: a conveying means for sandwiching both edges of a glass sheet and conveying the glass sheet horizontally; A processing head that grinds both edges of the glass sheet conveyed by, and an endless belt that supports the lower surface of the glass sheet between both edges of the glass sheet and runs in the same direction as the conveyance direction of the glass sheet. And supporting means.

According to the processing machine of the first aspect, in order to support the lower surface of the glass sheet between both edges of the glass sheet by the endless belt traveling in the same direction as the conveying direction of the glass sheet, the endless belt is formed. The sliding resistance between the lower surface of the glass plate and the lower surface is hardly generated, the lame feeding based on the sliding resistance is unlikely to be generated, and the downward bending does not occur at the center of the glass plate. Can be performed.

The glass sheet processing machine of the present invention may be one in which both edges of the glass sheet are ground by the processing head as in the first embodiment. Like the glass plate processing machine of the aspect, it may be configured to perform corner processing on the glass sheet by the processing head, and further, as in the glass sheet processing machine of the third aspect, A corner may be formed on both sides of the glass plate by the processing head.

In the glass sheet processing machine according to a fourth aspect of the present invention, in the processing machine according to any one of the first to third aspects, the conveying means is arranged corresponding to each edge, and The vehicle includes a pair of endless belts for holding the edges of the corresponding glass plates, and running means for running the pairs of endless belts in synchronization with each other.

As the traveling means, usually, an electric motor, a driving pulley rotated by the electric motor, an endless belt wound around the driving pulley, and a driven pulley around which the endless belt is also wound However, the synchronous running of each pair of endless belts may be performed by rotating the drive pulleys of each pair of endless belts by a common single electric motor. Alternatively, an electric motor may be provided for each pair of endless belts so that both electric motors are electrically operated synchronously.

The glass sheet processing machine according to a fifth aspect is the processing machine according to the fourth aspect, further comprising an adjusting means for adjusting a distance between one pair of endless belts and the other pair of endless belts. I have.

According to the processing machine of the fifth aspect, both edges can be optimally clamped in accordance with the size of the glass sheet, so that a higher quality grinding process and more precise cornering can be performed.

In the glass plate processing machine according to a sixth aspect of the present invention, in the processing machine according to the fifth aspect, the adjusting means may be arranged such that one pair of the endless belts is connected to the other pair of the endless belts. The distance between one pair of endless belts and the other pair of endless belts is adjusted by approaching and separating.

In the glass sheet processing machine according to a seventh aspect of the present invention, in the processing machine according to the fifth or sixth aspect, the adjusting means may include a gap between one pair of endless belts and the other pair of endless belts. And the distance between the processing head on one edge of the glass plate and the processing head on the other edge of the glass plate is also adjusted.

According to the working machine of the seventh aspect, the workability can be improved because the working head can be adjusted to the optimum working position at the same time as the adjustment of both edges to the optimum holding position. The processing head can be easily set to the optimum processing position corresponding to the position.

[0018] In the glass sheet processing machine according to an eighth aspect of the present invention, in the processing machine according to any one of the fifth to seventh aspects, the adjusting means may include a processing head on one edge side of the glass sheet. Approaching the processing head on the other side of the
By separating them, the distance between the processing head on one edge of the glass plate and the processing head on the other edge of the glass plate is also adjusted.

According to the glass sheet processing machine of the ninth aspect of the present invention, in the processing machine of any one of the first to eighth aspects, the supporting means comprises an endless belt of the supporting means, and It is designed to run in synchronization with the transport.

According to the processing machine of the ninth aspect, since the endless belt of the support means and the glass plate run synchronously,
Sliding resistance between the endless belt and the lower surface of the glass plate hardly occurs, lame feeding based on the sliding resistance is eliminated, and further high-quality grinding and accurate cornering can be performed.

According to the glass sheet processing machine of the tenth aspect of the present invention, in the processing machine of any one of the first to ninth aspects, the position of the endless belt of the supporting means between both edges of the glass sheet is determined. The apparatus further includes adjusting means for adjusting.

In the processing machine of the present invention, one endless belt may be provided to constitute the support means. Alternatively, a plurality of endless belts may be provided to constitute the support means.
In addition, a toothed endless belt, a so-called timing belt, may be used as each endless belt of the conveying means and the supporting means. It is preferable that each endless belt of the conveying means and the supporting means is flexible and has some elasticity (stretchability) in the thickness direction.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention and its embodiments will be described with reference to preferred examples shown in the drawings. The present invention is not limited to these examples.

1 to 4, a glass sheet processing machine 1 according to the present embodiment includes a thin glass plate 2 which holds both edges 3 and 4 of a thin glass plate 2 and transfers the glass plate 2 horizontally in the direction A. Means 5 and four processing heads 8a, 8b, 8 for grinding both edges 6 and 7 of the glass sheet 2 conveyed by the conveying means 5
c and 8d, and between both edges 3 and 4 of the glass plate 2, a support supporting the lower surface 9 of the glass plate 2 and having an endless belt 10 running in the same direction as the transport direction A of the glass plate 2. Means 11, adjusting means 16 for adjusting the distance d1 between one pair of endless belts 12 and 13 and the other pair of endless belts 14 and 15 of the conveying means 5, and between both edges 3 and 4 of the glass plate 2. And adjusting means 17 for adjusting the position of the endless belt 10 of the supporting means 11 in the direction perpendicular to the transport direction A.

The conveying means 5 is disposed in correspondence with each of the edges 3 and 4, and the pair of endless belts 12 and 13 and 14 and 15 which sandwich the edges 3 and 4 of the corresponding glass plate 2. And a traveling means 21 for causing the pair of endless belts 12 and 13 and the pair of endless belts 14 and 15 to travel in the A direction in synchronization with each other.

The lower endless belts 12 and 14 are longer in the direction A than the upper endless belts 13 and 15,
Therefore, on the loading side of the glass plate 2, the endless belt 12
And 14, the glass plate 2 can be easily mounted.

The traveling means 21 is connected to an electric motor 23 mounted on a base 22 and an output rotating shaft of the electric motor 23, and is spline rotatably supported on the base 22 and a vertical frame 24 on the downstream side. Brackets 27 and 28 are attached to the grooved drive shaft 25 and the vertical frames 24 and 26 on the downstream side.
And pulleys 29 and 30 and 31 and 32 rotatably supported via gears, and gears 33 and 34 and 35 and 36 fixed to the pulleys 29 and 30 and 31 and 32
And pulleys 43 and 44 and 45 and 46 rotatably supported on the upstream vertical frames 37 and 38 via support plates 39 and 40 and 41 and 42.

The pulley 29 through which the drive shaft 25 penetrates is fixed to the drive shaft 25 and is rotated by the rotation of the drive shaft 25. The pulley 31 through which the drive shaft 25 penetrates
Is connected to the drive shaft 25 via a spline groove 47 so as to be rotated by the rotation of the drive shaft 25, and is movable in a direction B orthogonal to the A direction. Is engaged with the gear 34, and when the gear 33 is rotated by the rotation of the pulley 29, the gear 34 is also rotated, and the rotation of the gear 34 causes the pulley 30 to rotate. The gear 35 through which the drive shaft 25 is relatively movably penetrated in the direction B is the gear 3
6, when the gear 35 is rotated by the rotation of the pulley 31, the gear 36 is also rotated, and by the rotation of the gear 36,
The pulley 32 is adapted to be rotated.

The traveling means 21 rotates the drive shaft 25 by the operation of the electric motor 23, and rotates the pulley 29 on the one hand by the rotation of the drive shaft 25, so that the pulley 29 and the pulley 43 are rotated.
And the endless belt 13 looped between the pulley 30 and the pulley 44 is rotated by rotating the pulley 30 via the gears 33 and 34 while running the endless belt 12 looped between the pulley 30 and the pulley 30. On the other hand, the pulley 31 is rotated to run the endless belt 14 looped between the pulley 31 and the pulley 45, and the pulley 32 is rotated via the gear 35 and the gear 36, so that the pulley 32 The endless belt 15 wound around the pulley 46 runs.

The vertical frames 24 and 37 are mounted on a fixed base 51 supported by the base 22, and
6 and 38 are attached to a movable table 52 movably arranged in the direction B on the base 22. The movable table 52 is slidably mounted on guide rails 53 and 54 provided on the base 22 in the direction B.

The support plate 39 extends in the direction A and is attached to the vertical frames 24 and 37.
3, the back surface of the endless belt 12 is slidably abutted, and the upper edge 53 of the support plate 39 prevents the endless belt 12 from hanging down.
It extends in the direction A and is attached to the vertical frames 24 and 37 via vertical position adjusting mechanisms 55 and 56. The vertical position adjusting mechanisms 55 and 56 have knobs 57 and 58, respectively.
, The vertical position of the support plate 40 and the pulley 44 can be adjusted. The lower edge 59 of the support plate 40 is slidably contacted with the back surface of the endless belt 13. And the lower edge 59 of the support plate 40
This prevents the endless belt 13 from lifting up,
The support plate 41 extends in the direction A, and the vertical frames 26 and 38
The back surface of the endless belt 14 is slidably abutted against the upper edge 61 of the support plate 41, and the upper edge 61 of the support plate 41 prevents the endless belt 14 from hanging down. The support plate 42 extends in the direction A and is attached to the vertical frames 26 and 38 via vertical position adjusting mechanisms 62 and 63.
The upper and lower positions of the support plate 42 and the pulley 46 can be adjusted by rotating the knobs 64 and 65, respectively. The back surface of the belt 15 is slidably abutted, and the lower edge 66 of the support plate 42 prevents the endless belt 15 from rising.

The processing heads 8a, 8b, 8c and 8d are
The processing heads 8a and 8b are attached to the fixed base 51,
Since the edge 6 is ground and the processing heads 8c and 8d are mounted on the movable table 52 to grind the edge 7, the processing heads 8c and 8d have the same configuration. If necessary, the corresponding numerical symbols for the other processing heads 8b, 8c and 8d are b and c.
And d.

The machining head 8a has a bracket 72a attached to the fixed base 51 via a position adjusting mechanism 71a in the direction B, and an electric motor 74 attached to the bracket 72a via a position adjusting mechanism 73a in the vertical direction.
a, and a grinding wheel 75a attached to the output rotation shaft of the electric motor 74a.
a, the position of the grinding wheel 75a in the direction B can be adjusted by rotating the knob 76a. Can be adjusted.

The machining head 8a grinds the edge 6 of the glass sheet 2 conveyed in the direction A by the rotation of the grinding wheel 75a by the operation of the electric motor 74a. A moving mechanism for moving the processing head 8a in the direction B is provided, and this moving mechanism is operated under program control to move the processing head 8a forward and backward with respect to the glass plate 2, and to move the glass plate 2 by the grinding wheel 75a. The corner 78 may be ground and removed, that is, a so-called corner cutting process may be performed. In this case, in addition to grinding the edge 6 of the glass plate 2, cornering may be performed on the glass plate 2 by the processing head 8 a. Only processing may be performed.

The support means 11 includes a movable table 81 slidably mounted in the direction B on guide rails 53 and 54 provided on the base 22, a support plate 82 attached to the movable table 81,
A pulley 84 rotatably attached to one end of the support plate 82 via a bracket 83, and a pulley 86 rotatably attached to the other end of the support plate 82 via a bracket 85.
And the endless belt 10 wrapped around pulleys 84 and 86.

The upper edge 87 of the support plate 82 has an endless belt 1
The back surface of the endless belt 10 is slidably abutted, and the upper edge 87 of the support plate 82 prevents the endless belt 10 from hanging down. The pulley 84 through which the drive shaft 25 has passed
The drive shaft 25 is connected to the drive shaft 25 via a spline groove 47 so as to be rotated by the rotation of the drive shaft 25 and is movable in the direction B. Endless belt 10
Is driven in the direction A by the rotation of the pulley 84 due to the rotation of the drive shaft 25.
1 is to transfer the endless belt 10 of the supporting means 11
The endless belts 12 and 13 and 14 and 15 are driven in synchronization with each other, that is, in synchronization with the conveyance of the glass plate 2.

The adjusting means 16 includes an electric motor 91 mounted on the base 22, a screw shaft 92 extending in the direction B and rotatably supported by the base 22, and screwed to the lower surface of the movable base 52. , And 93, and gear mechanisms 94 and 95 for transmitting the rotation of the output rotation shaft of the electric motor 91 to the screw shafts 92 and 93, and a transmission shaft 96.
6 is an operation of the electric motor 91, and the gear mechanisms 94 and 95
By rotating the screw shafts 92 and 93 via the transmission shaft 96, and by rotating the screw shafts 92 and 93, the movable table 52 is moved in the direction B, and the pair of endless belts 14 and 15 are 12 and 13, the distance d1 between the pair of endless belts 14 and 15 and the pair of endless belts 12 and 13 is adjusted. The processing heads 8c and 8d for grinding the edge 7 of the glass plate are moved toward and away from the processing heads 8a and 8b for grinding the edge 6 of the glass plate 2,
The distance between the processing heads 8a and 8b for the edge 6 of the glass plate 2 and the processing heads 8c and 8d for the edge 7 of the glass plate 2 is also adjusted.

The adjusting means 17 includes an electric motor 101 mounted on the base 22, a screw shaft 102 extending in the direction B and rotatably supported by the base 22, and screwed to the lower surface of the movable base 81. And 103, and gear mechanisms 104 and 105 for transmitting the rotation of the output rotation shaft of the electric motor 101 to the screw shafts 102 and 103, and a transmission shaft 106. The adjusting means 17 is operated by the operation of the electric motor 101. ,
By rotating the screw shafts 102 and 103 via the gear mechanisms 104 and 105 and the transmission shaft 106, the movable table 81 is moved in the direction B by the rotation of the screw shafts 102 and 103,
Endless belt 10 between both edges 3 and 4 of glass plate 2
The position in the direction B is adjusted.

In the processing machine 1 described above, the glass plate 2 is placed on the endless belts 10, 12 and 14 on the pulley 43 and 45 sides, and the end portions 3 of the endless belts 12 and 13 are connected to the endless belts. With the edges 4 held at 14 and 15, respectively, the edge 6 is moved by the grinding wheels 75a and 75b while the edge 7 is moved by the grinding wheels 75c and 75d while being transported in the direction A by the running of these endless belts. Each is ground and processed.

According to the processing machine 1, the lower surface 9 of the glass sheet 2 is supported between the both edges 3 and 4 of the glass sheet 2 by the endless belt 10 running in the same direction as the conveying direction A of the glass sheet 2. Endless belt 10 and glass plate 2
Sliding resistance with the lower surface 9 of the glass plate 2 is less likely to occur, lame feeding based on the sliding resistance is unlikely to occur, and no downward bending occurs at the center of the glass plate 2; In addition, since the adjusting means 16 is provided, the both edges 3 and 4 can be optimally clamped in accordance with the size of the glass plate 2, so that a higher quality grinding process can be performed.

Further, according to the processing machine 1, since the two heads 3 and 4 can be adjusted to the optimum clamping position and simultaneously the processing heads 8c and 8d can be adjusted to the optimum processing position, the workability is good. In addition, the processing heads 8a, 8b, 8c and 8d can be set at the optimum processing positions corresponding to the clamping positions.
Since the endless belt 10 of the support means 11 and the endless belts 12, 13, 14 and 15 of the transport means 5 run synchronously, the sliding resistance between the endless belt 10 and the lower surface 9 of the glass plate 2 is almost zero. This eliminates the occurrence of lame feeding based on the sliding resistance, so that high-quality grinding and accurate cornering can be performed.

The processing heads 8b and 8d are in charge of rough cutting, and the processing heads 8a and 8c are in charge of finish cutting. However, one processing head may be provided for each edge. May be provided three or more.

[0043]

According to the present invention, it is possible to provide a glass sheet processing machine capable of performing high quality grinding and accurate corner cutting.

[Brief description of the drawings]

FIG. 1 is a plan view of an example of a preferred embodiment of the present invention.

FIG. 2 is a view taken along line II-II of the example shown in FIG.

FIG. 3 is a sectional view taken along line III-III of the example shown in FIG.

FIG. 4 is a sectional view taken along line IV-IV of the example shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing machine of glass plate 2 Glass plate 3, 4 Edge part 5 Conveying means 8a, 8b, 8c, 8d Processing head 9 Lower surface 10 Endless belt 11 Supporting means

Claims (10)

[Claims] 1. A conveying means for sandwiching both edges of a glass sheet and conveying the glass sheet horizontally, a processing head for grinding both edges of the glass sheet conveyed by the conveying means, A glass sheet processing machine, comprising: a supporting means having an endless belt that supports the lower surface of the glass sheet between both edges and runs in the same direction as the glass sheet conveyance direction. 2. The glass sheet processing machine according to claim 1, wherein the processing head performs a cornering process on the glass sheet in addition to grinding both edges of the glass sheet. 3. A conveying means for sandwiching both edges of a glass sheet and conveying the glass sheet horizontally, a processing head for performing a cornering process on both edges of the glass sheet conveyed by the conveying means, A glass sheet processing machine, comprising: a supporting means for supporting a lower surface between both edges of the glass sheet and having an endless belt running in the same direction as the conveying direction of the glass sheet. 4. A transport means arranged corresponding to each edge, and a pair of endless belts sandwiching an edge of a corresponding glass plate, and a traveling means for running each pair of endless belts in synchronization with each other. The glass sheet processing machine according to any one of claims 1 to 3, comprising: 5. The glass sheet processing machine according to claim 4, further comprising adjusting means for adjusting a distance between one pair of endless belts and the other pair of endless belts. 6. The adjusting means moves one pair of endless belts toward and away from the other pair of endless belts to adjust the distance between one pair of endless belts and the other pair of endless belts. The glass sheet processing machine according to claim 5, wherein the processing is performed. 7. The adjusting means adjusts the interval between one pair of endless belts and the other pair of endless belts, and adjusts a processing head on one edge of the glass plate and a processing head on the other edge of the glass plate. 7. The glass sheet processing machine according to claim 5, wherein the distance between the glass plates is also adjusted. 8. The adjusting means moves the processing head on one edge side of the glass plate toward and away from the processing head on the other edge side of the glass plate, and the processing head on one edge side of the glass plate and the glass plate. The glass sheet processing machine according to any one of claims 5 to 7, wherein an interval between the other processing side and the processing head is adjusted. 9. The glass sheet according to claim 1, wherein the supporting means runs the endless belt of the supporting means in synchronization with the conveyance of the glass sheet by the conveying means. Processing machine. 10. The glass sheet processing machine according to claim 1, further comprising adjusting means for adjusting the position of the endless belt of the supporting means between both edges of the glass sheet. .