JP2002052449A - Glass plate machining method and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass plate machining method and its device for machining a glass plate with high precision and improving the productivity. SOLUTION: The glass plate machining device 1 comprises a pair of holding blocks 4, 4a on which glass plate holding parts 3 are mounted, respectively, moving means 7 for alternately reciprocating the holding blocks 4, 4a to move the glass plate holding parts 3 along a travel path 5 in each forwarding process of the holding blocks 4, 4a and to move the glass plate holding parts along a travel path 6 in each backwarding process of the holding blocks 4, 4a, and machining means 8 for machining the glass plate 2 held between the glass plate holding parts 3 in each forwarding process of the holding blocks 4, 4a reciprocated by the moving means 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing a glass sheet for processing thin glass used as a glass substrate for a liquid crystal display (LCD), a glass substrate for a solar cell, and the like.

[0002]

In the case of performing a grinding process for grinding both opposing edges of a thin glass plate and a chamfering process for chamfering both opposing corners, a pair of sandwiching belt conveyors are used to form the glass plate. The pair of grinding wheels and the chamfering wheels disposed on the outer sides of the opposing edges of the glass sheet are moved closer to or away from each other, while the inner sides of the opposing opposite sides are sandwiched and conveyed straight. However, even if the pair of sandwiching belt conveyors sandwich the opposite inner edges of the glass plate and carry straight forward, errors in the manufacturing accuracy of the belts, pulleys, etc. of the sandwiching belt conveyor and the glass holding by the respective sandwiching belt conveyors. An error occurs in the transport speed of each sandwiching belt conveyor device due to an error in the clamping force for clamping the plate, and the glass plate is transported while lame, thereby performing high-precision grinding and cornering. In addition, when performing grinding and cornering on a glass plate having a coating layer that blocks heat rays, ultraviolet rays, etc. formed on one side by sputtering, the glass plate is clamped by a clamping belt conveyor device. There is a possibility that the film layer may be damaged.

In the case where a thin glass plate having a film layer formed on one side is subjected to grinding and cornering with high precision without causing any damage to the film layer, a single suction device is used. Then, the surface of the glass plate on which the coating layer is not formed is suctioned, and the suction device is reciprocated along the guide rail by a single reciprocating device. , A pair of grinding wheels and a pair of cornering wheels are moved toward or away from each other. However, since the suction device is reciprocated by one reciprocating device, after the processed glass sheet is unloaded, the suction device must be moved back, and it takes time to suck the next glass plate. And it is difficult to improve the production.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a method of processing a glass plate capable of processing a glass plate with high accuracy and improving the production amount. And an apparatus therefor.

[0005]

According to the method of processing a glass sheet of the present invention, a pair of holding tables each having a glass sheet holding section for holding a glass sheet are reciprocated while crossing each other. In the forward stroke, the glass plate holding unit mounted on the holding table is moved by one common movement path, and in the return stroke of each holding table, the glass plate holding unit mounted on the holding table is moved to one position. It is moved on another moving path different from the moving path, and is held by the glass plate holding part mounted on the holding table in at least one of the forward stroke and the backward stroke of each holding table. Work on glass plate.

According to the glass sheet processing method of the present invention, the pair of holding tables are reciprocated while crossing each other, and the forward movement of each holding table shares the glass sheet holding section mounted on the holding table. In the return stroke of each holding table, the glass plate holding unit mounted on the holding table is moved on another moving path different from the one moving path, and In at least one of the forward stroke and the backward stroke, in order to process the glass sheet held by the glass sheet holding unit attached to the holding table, for example, a glass sheet clamping belt is used. Without, it is possible to move the glass plate holding unit using a reciprocating device having a high-precision transfer performance comprising a screw shaft or a stator as described below, and can process the glass plate with high accuracy, and The production amount can be improved.

In the method for processing a glass sheet according to the present invention, preferably, the forward movement of one holder and the backward movement of the other holder are synchronized. In order to synchronize the forward movement of one holding table and the return movement of the other holding table, it is possible to prevent each glass plate holding unit from being simultaneously moved on a common movement path, and The glass plate holders do not interfere with each other.

In the method for processing a glass sheet of the present invention, preferably, the glass sheet holding section is moved from one moving path to another moving path at the forward end, and the glass sheet holding section is moved at the backward end. Is moved from another traveling path to one traveling path. Since the movement path in which the glass sheet holding unit is moved is changed between the forward end and the rear end, a region for processing the glass sheet can be widened.

In the method for processing a glass sheet according to the present invention, the glass sheet is preferably subjected to at least one of a grinding processing for grinding an edge of the glass sheet and a corner processing for cutting a corner of the glass sheet. Do.

The glass sheet processing apparatus of the present invention reciprocates a pair of holding tables each having a glass sheet holding section for holding the glass sheet, and the pair of holding tables so as to cross each other. In the forward stroke, the glass plate holding unit mounted on the holding table is moved by one common movement path, and in the return stroke of each holding table, the glass plate holding unit mounted on the holding table is moved to one position. A moving means for moving on another moving path different from the moving path, and mounting on the holding table in at least one of a forward stroke and a backward stroke of each holding table reciprocated by the moving means. Processing means for processing the glass plate held by the set glass plate holding portion.

According to the apparatus for processing a glass sheet of the present invention, a pair of holding tables each having a glass sheet holding portion for holding the glass sheet, and a pair of holding tables are reciprocated while crossing each other. In the forward movement stroke of the table, the glass plate holding unit mounted on the holding table is moved by one common movement path, and in the return stroke of each holding table, the glass plate holding unit mounted on the holding table is moved. A moving means for moving on another moving path different from the one moving path, and at least one of the forward movement stroke and the backward movement stroke of each holding table reciprocated by the moving means, Processing means for processing the glass plate held by the glass plate holding unit attached to the, for example, without using a belt for holding the glass plate, a screw shaft or fixed as described below With high-precision transport performance Using reciprocating device can move the glass plate holding unit, can process the glass plate with high accuracy, and can improve its production.

The moving means of the apparatus for processing a glass sheet according to the present invention preferably synchronizes the forward movement of one holding table with the backward movement of another holding table. Since the moving means is configured to synchronize the forward movement of one holding table and the backward movement of the other holding table, each glass plate holding unit is simultaneously used on a common moving path. Can be moved,
The respective glass plate holders do not interfere with each other.

Preferably, the moving means of the glass sheet processing apparatus of the present invention moves the glass sheet holding portion from one moving path to another moving path at the forward end, and moves the glass sheet holding section to the other moving path at the forward end. The glass plate holder is moved from one other moving path to one moving path. Since the moving means alternates the moving path in which the glass sheet holding unit is moved at the forward end and the backward end, a region for processing the glass sheet can be widened.

[0014] The moving means of the apparatus for processing a glass sheet of the present invention preferably comprises a turning mechanism for turning each of the glass sheet holding portions, and this turning mechanism is provided at the forward end portion with each of the glass sheets. By rotating the plate holding unit, each glass plate holding unit is moved from one moving path to another moving path, and at the return end, each glass plate holding unit is turned, and Are moved from one other moving path to one moving path. The revolving mechanism preferably revolves the respective glass plate holders about an axis extending in a direction perpendicular to a reciprocating direction in which the respective holders reciprocate.

The moving means of the apparatus for processing a glass sheet of the present invention preferably comprises a pair of reciprocating devices for reciprocating a pair of holding tables, respectively, and the pair of reciprocating devices drive the holding tables. Drive paths are provided, and these drive paths are arranged with an interval at which a pair of holding tables can reciprocate while passing each other. Each drive path preferably has a screw shaft, respectively, and a pair of reciprocating devices preferably each have a rotary drive device for rotating this screw shaft, and a pair of screw shafts, The pair of rotation driving devices are disposed with a pair of screw shafts interposed therebetween. When a pair of screw shafts are arranged with a pair of holding stands interposed therebetween, and a pair of rotation driving devices are arranged with a pair of screw shafts interposed therebetween, the rotation driving device and the like may be attached to each of the glass plate holding portions and holding members. The pair of reciprocating devices can smoothly move the glass plate without interfering with the set glass plate.

The glass plate holding portion mounted on the holding table of the glass plate processing apparatus of the present invention preferably has a suction holding surface for holding the glass plate by suction from one surface thereof, and a glass plate attached to the suction holding surface. And a suction device for sucking one surface of the glass plate in order to suck and hold. The glass plate holding unit includes a suction holding surface that sucks and holds the glass plate from one surface thereof, and a suction device that sucks one surface of the glass plate so as to suck and hold the glass plate on the suction holding surface. Therefore, even when processing is performed on a glass plate having a coating layer formed on the other surface, the processing can be performed without damaging the coating layer.

The processing means of the apparatus for processing a glass sheet of the present invention is preferably such that at least one of a grinding processing for grinding an edge of the glass sheet and a corner processing for cutting a corner of the glass sheet is performed on the glass sheet. Is to be processed.

The processing means of the apparatus for processing a glass sheet according to the present invention preferably comprises a pair of grinding tools and a pair of cornering tools, wherein the pair of grinding tools grind both opposing edges of the glass sheet. Processing is performed, and cornering processing for cornering both opposing corners of the glass sheet with a pair of cornering tools is performed.

The apparatus for processing a glass sheet according to the present invention preferably comprises an adjusting means for adjusting the interval between the pair of grinding tools and the interval between the pair of cornering tools. Since an adjusting means for adjusting the interval between the pair of grinding tools and the interval between the pair of cornering tools is provided, it is possible to perform processing on glass sheets of various sizes.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention. The present invention is not limited to these examples.

Referring to FIGS. 1 to 9, a glass plate processing apparatus 1 according to the present embodiment includes a pair of holding tables 4 and 4 to which glass plate holders 3 each holding a thin rectangular glass plate 2 are mounted.
a and the holding tables 4 and 4a are reciprocated in the reciprocating direction X while crossing each other. In each forward movement of the holding tables 4 and 4a, the glass plate holder 3 is extended in the X direction. Moving means for moving the glass plate holding unit 3 on another moving path 6 extending in the X direction different from the moving path 5 in the respective reciprocating strokes of the holding tables 4 and 4a. 7 and processing means 8 for processing the glass plate 2 held by the glass plate holding part 3 in each forward stroke of the holding tables 4 and 4 a reciprocated by the moving means 7. I have.

Each of the glass plate holders 3 has a suction holding surface 11 for holding the glass plate 2 by suction from one surface 9 thereof, and one of the glass plates 2 for holding the glass plate 2 by the suction holding surface 11. And a suction device 12 for sucking the surface 9. In addition, it is preferable that each glass plate holding part 3 has the same shape as each other.

The suction device 12 includes a recess 13 formed by partially depressing the suction holding surface 11, a vacuum suction pump (not shown), and a direct drive (DD) with a brake described later.
A recess 13 and an air tube 14 connecting the vacuum suction pump are provided through a hollow portion of the rotating shaft of the motor 41, and the recess 13 is formed by a groove, a steal, or the like. The suction device 12 operates the air tube 1 by operating a vacuum suction pump.
The suction hole 13 sucks the concave portion 13, and the suction sucks the one surface 9 of the glass plate 2 facing the suction holding surface 11, thereby causing the suction holding surface 11 to suck and hold the glass plate 2.

The moving paths 5 and 6 correspond to the X
End 17 when the holding tables 4 and 4a reciprocate, respectively, having a width equal to the width in the Y direction perpendicular to the direction.
To the rear end 18 in the X direction, which are opposed to each other in the Z direction orthogonal to the X direction and the Y direction with the holding tables 4 and 4a therebetween.

The holding tables 4 and 4a are formed similarly. Accordingly, the holding table 4 will be described below, and the description of the holding table 4a will be omitted by attaching the symbol a to the drawing as necessary.

The holding table 4 has a rectangular parallelepiped main body 120 extending in the Z direction, and a truncated quadrangular pyramid mounting portion 121 provided integrally with the main body 120. , The rotating shaft of the motor 41 is mounted, and the mounting portion 121 has a mounting surface 1 on which the glass plate holding portion 3 is mounted.
22. In addition, the holding tables 4 and 4a, when they pass each other, the respective mounting surfaces 122 and 122a
Are opposed to each other in the Z direction, and the main bodies 120 and 120a are arranged to face each other in the Y direction.

The moving means 7 includes a reciprocating mechanism 15 for reciprocating the holding tables 4 and 4a, respectively, and the respective glass plate holding sections 3
And a turning mechanism 16 for turning each of the glass plate holders 3 at the forward end portion 17 to move each of the glass plate holders 3 from the moving path 5. Each of the glass plate holders 3 is moved to the road 6 and the respective glass plate holders 3 are pivoted at the return end 18 to turn the respective glass plate holders 3.
Are moved from the moving path 6 to the moving path 5, respectively.

The reciprocating mechanism 15 includes reciprocating devices 20 and 20a for reciprocating the holding tables 4 and 4a, respectively, and the reciprocating devices 20 and 20a face each other in the Y direction. The reciprocating mechanism 15 includes a reciprocating device 20 that moves the holding table 4 forward and a reciprocating device 20a that controls the holding table 4.
The reciprocation of the holding table 4a by the reciprocating device 20a is synchronized with the reciprocation of the holding table 4a by the reciprocating device 20a.

The reciprocating devices 20 and 20a are formed in the same manner. Therefore, the reciprocating device 20 will be described below, and the reciprocating device 20a will be denoted by the reference character "a" if necessary. Omitted.

The reciprocating device 20 includes a frame 35 extending in the X direction supported on the base 19 via a support frame 34.
A ball screw shaft 25 extending in the X direction as a drive path for driving the holding table 4 in the X direction; a movable table 26 to which a ball nut screwed to the ball screw shaft 25 is fixed; , An electric motor (servo motor) 29 as a rotary driving device for driving the ball screw shaft 25 to rotate, and a transmission means 28 for transmitting the rotation of the output rotary shaft of the electric motor 29 to the ball screw shaft 25. The ball screw shaft 25 is rotatably attached to the frame 35 via a bearing, and the pair of guide rails 27 are attached to the frame 35 with the ball screw shaft 25 interposed therebetween. A motor 41 is attached to the table 26. Transmission means 28
Has a toothed pulley 30 attached to one end of the ball screw shaft 25, a toothed pulley 31 attached to the output rotation shaft of the electric motor 29, and a timing belt 32 wound around the pulleys 30 and 31. ing. The reciprocating device 20 drives the ball screw shaft 25 to rotate via the pulley 30, the belt 32 and the pulley 31 by the operation of the electric motor 29.
The holding table 4 is connected to the ball screw shaft 25 via the motor 6 and the motor 41.
And the holding table 4 is moved in the X direction. Note that the ball screw shafts 25 and 25a face each other with the main bodies 120 and 120a of the holding tables 4 and 4a therebetween in the Y direction, and have an interval at which the main bodies 120 and 120a can reciprocate while passing each other in the Y direction. 1
20 and 120a are arranged with an interval capable of reciprocating while crossing each other as long as they do not contact each other in the Y direction,
The electric motors 29 and 29a are connected to the ball screw shaft 2 in the Y direction.
5 and 25a so as to face each other.
And 35a.

The reciprocating mechanism 15 has a speed at which the holding table 4 is reciprocated by the reciprocating device 20 and a reciprocating device 20a.
It is preferable that the holding tables 4 and 4a be reciprocated respectively so that the speed at which the holding table 4a is reciprocated is the same as the speed of the holding table 4a. Further, in the reciprocating device 20 of the present embodiment, the movable table 26 is reciprocated by the rotation of the ball screw shaft 25, but instead of this, the movable table 26 is
May be reciprocated. In this case, the reciprocating device 20 may be configured by disposing the stator of the linear motor as a drive path so as to extend in the X direction on the frame 35 and attaching the movable member to the movable base 26.

The turning mechanism 16 comprises a turning device 40 for turning the glass plate holder 3 mounted on the holder 4 around an axis extending in the Y direction, and a glass plate holder mounted on the holder 4a. 3 is provided with a swivel device 40a for swiveling about an axis extending in the Y direction. The turning device 40 includes a direct drive (DD) motor 41 with a brake. The motor 41 has a stator attached to the movable base 26 and a rotation shaft extending in the Y direction at the center thereof. Rotator, and the holding shaft 4
Is attached. The turning device 40 moves the glass plate holding unit 3 via the holding table 4 by the operation of the motor 41 to Y
It is designed to pivot around an axis extending in the direction. The turning device 40a includes a direct drive (DD) motor 41a with a brake.
Has a stator attached to the movable base 26a, and a rotor having a rotation axis extending in the Y direction at the center thereof, and the holding table 4a is attached to the rotation axis. ing. The turning device 40a turns the glass plate holding portion 3 around the axis extending in the Y direction via the holding table 4a by the operation of the motor 41a. still,
The rotating shafts of the motors 41 and 41a each have a hollow structure, and the air tubes 14 pass through the respective hollow portions.

The processing means 8 is provided with a grinding means 47 for performing a grinding process on the glass plate 2 to grind both opposing edges 45 and 45a of the glass plate 2 which are opposed to each other in the Y direction. A cornering means 50 is provided for performing cornering on the glass plate 2 to corner both corners 48 and 48a.

The grinding means 47 face each other in the Y direction,
Further, a pair of grinding heads 51 and 51a arranged with the glass plate 2 therebetween, and a Y-direction fine adjustment mechanism 52 for finely adjusting the respective positions of the grinding heads 51 and 51a in the Y direction.
And 52a and the Z of each of the grinding heads 51 and 51a.
And a fine adjustment mechanism composed of Z direction fine adjustment mechanisms 53 and 53a for fine adjustment of the position in the Y direction.
4 and a Y-direction fine adjustment mechanism 52a
Are supported by a moving table 95a described later via a support frame 54a.

The grinding heads 51 and 51a are formed in the same manner, and the Y-direction fine adjustment mechanisms 52 and 52a
The Z-direction fine adjustment mechanisms 53 and 53a are also formed similarly. Therefore, the grinding head 5
1. The Y direction fine adjustment mechanism 52 and the Z direction fine adjustment mechanism 53 will be described, and the grinding head 51a and the Y direction fine adjustment mechanism 5 will be described.
2a and the Z-direction fine adjustment mechanism 53a are denoted by reference numeral a in the drawings as necessary, and description thereof is omitted.

The grinding head 51 has a grinding wheel 55 as a grinding tool and a spindle motor 56 for rotating the grinding wheel 55. Grinding wheel 55
Are arranged outside one edge 45 of the glass plate 2,
It is attached to an output rotating shaft of the spindle motor 56 extending in the Z direction. In this example, the grinding wheel 55 is made of an annular whetstone, and its peripheral edge is the edge 4 of the glass plate 2.
5, the edge 45 of the glass plate 2 is ground.

The Y-direction fine adjustment mechanism 52 includes a support frame 5
4, a mounting shaft 61 attached to the mounting base 61, a screw shaft 62 extending in the Y direction rotatably mounted on the mounting base 61,
It is fitted to the mounting base 61 so as to be movable in the Y direction,
Further, a Y-direction slide 63 to which a nut (not shown) screwed to the screw shaft 62 is fixed is provided, and the Y-direction fine adjustment mechanism 52 removes the nut by manual rotation of the screw shaft 62 via a knob. By moving the fixed Y-direction slide 63 in the Y direction and moving the grinding head 51 in the Y direction, the position of the grinding wheel 55 in the Y direction can be finely adjusted.

The Z-direction fine adjustment mechanism 53 includes a fixed base 57 to which a spindle motor 56 is fixed, a screw shaft 58 extending in the Z direction screwed with a nut fixed to the fixed base 57, and fitted to the fixed base 57. And a support base 59 that rotatably supports the screw shaft 58.
It is integrated with the direction slide 63. The Z-direction fine adjustment mechanism 53 is manually rotated by a screw shaft 58 via a knob.
The fixing table 57 to which the nut is fixed is
By moving the grinding head 51 in the Z direction by moving the grinding head 55 in the Z direction, the position of the grinding wheel 55 in the Z direction can be finely adjusted.

The cornering means 50 opposes in the Y direction and moves the pair of cornering heads 65 and 65a and the cornering heads 65 and 65a in the Y direction, which are disposed with the glass plate 2 therebetween. Y-direction moving devices 66 and 66a,
Cornering head 65 by Y direction moving devices 66 and 66a
And a determination means 101 for determining a moving speed, a moving amount, and a start time of the movement of the Y-direction moving device 66 in the Y direction.
, And the Y-direction moving device 66a is supported on a moving table 95a described later via a supporting frame 64a. The cornering means 50 moves the cornering heads 65 and 65a closer to or away from each other by the Y-direction moving devices 66 and 66a, so that the cornering wheels 67 and 67a described later as a pair of cornering tools come closer to each other. , One corner 48 and the other corner 4 of the glass plate 2
8a are cut off at the same time. In this example, the cornering heads 65 and 65a are the grinding heads 51 and 5
1a, the unloading side 11 of the glass plate 2 in the X direction
6.

The cornering heads 65 and 65a are similarly formed, respectively, and have Y-direction moving devices 66 and 66a.
Are also formed similarly. Therefore, the cornering head 65 and the Y-direction moving device 66 will be described below, and the description of the cornering head 65a and the Y-direction moving device 66a will be omitted by attaching the symbol a to the drawing as necessary.

The cornering head 65 includes a cornering wheel 67.
And a spindle motor 68 for rotating the cornering wheel 67. The cornering wheel 67 is attached to an output rotation shaft of the spindle motor 68 extending in the Z direction. It is preferable that the cornering head 65 can finely adjust the position of the cornering wheel 67 in the Y direction and the Z direction. In addition, cornering wheel 6
Reference numeral 7 denotes an annular grindstone in the present example, the periphery of which is brought into contact with the corner 48 of the glass plate 2 to form the corner 48 of the glass plate 2.
Is to be ground.

The Y-direction moving device 66 includes a support frame 64
And a ball screw shaft 74 extending in the Y direction and rotatably mounted on the mounting base 75.
And an output motor connected to one end of the ball screw shaft 74, and an electric motor (servo motor) mounted on the mounting base 75.
76 and a Y-direction slide 77 which is fitted to the mounting base 75 so as to be movable in the Y-direction, and in which a ball nut (not shown) screwed to the ball screw shaft 74 is fixed. . The Y-direction moving device 66 rotates the ball screw shaft 74 by the operation of the electric motor 76, and by this rotation, moves the Y-direction slide 77 with the ball nut fixed thereto in the Y direction, thereby moving the cornering head 65 in the Y direction. Move. The support frame 64 is provided with a limit switch 102 for detecting an origin position. When the cornering heads 65 and 65a separate from each other, the limit switch 102 comes into contact with the Y-direction slide 77 to form a corner. The origin position of the wheel 67 in the Y direction is detected.

The deciding means 101 determines the position of the corner 48 of the glass plate 2.
And input means 103 for setting and inputting the shapes of and
And an encoder 104 attached to the electric motor 29 and detecting the rotation of the output rotation shaft thereof; an encoder 104a attached to the electric motor 29a and detecting the rotation of the output rotation shaft; Arrival detecting means 105 for detecting the arrival of the glass sheet 2 held by the moving glass sheet holding section 3 at the predetermined position C, a set value from the setting input means 103, an encoder 104 or 104
a on the basis of the rotation detection signal from the rotation detection signal a and the arrival detection signal from the arrival detection means 105.
And a calculating unit 106 for calculating the moving speed, the moving amount and the start time of the movement in the Y direction, and the calculation result from the calculating unit 106 is transmitted to control means (not shown) described later. ing.

The setting input means 103 includes a display input device (touch panel). By operating the setting input means 103, setting values for specifying the shapes of the corners 48 and 48a of the glass plate 2 can be set and input. It has become.

The arrival detecting means 105 includes the cornering wheel 6
7 and 67a, the glass plate 2 in the X direction
Is located at a predetermined position C located on the carry-in side 115 of the
The arrival of the leading edge 108 and the trailing edge 109 of the glass plate 2 at a predetermined position C is detected. Arrival detecting means 10
Reference numeral 5 includes, for example, a proximity switch (sensor) or the like.

The arithmetic unit 106 is provided with a corner 48 on the front edge 108 side of the glass plate 2 from the setting input means 103.
And 48a, the arrival detection signal of the leading edge 108 of the glass plate 2 from the arrival detection means 105, and the encoder 10
4 and 104a, the moving speed, the moving amount and the moving amount of the cornering wheels 67 and 67a in the Y direction when the corners 48 and 48a on the front edge 108 side of the glass plate 2 are cornered. The movement start time is calculated, and the set values of the corners 48 and 48a on the rear edge 109 side of the glass plate 2 from the setting input unit 103 and the glass plate 2 from the arrival detection unit 105 are calculated. Cornering wheels 67 and 67 for cornering the corners 48 and 48a on the rear edge 109 side of the glass plate 2 based on the arrival detection signal of the edge 109 and the rotation detection signal from the encoder 104 or 104a.
The movement speed, the movement amount, and the movement start time of the movement a in the Y direction are calculated.

Note that the arithmetic unit 106 may be embodied to perform the above-described arithmetic operation by using a program stored in a microcomputer in advance.

The glass sheet processing apparatus 1 of this embodiment further includes an adjusting means 80 for adjusting the distance between the grinding wheels 55 and 55a in the Y direction and the distance between the cornering wheels 67 and 67a in the Y direction. Control means (not shown) for controlling the operation.

The adjusting means 80 includes a head moving device 81 for moving the grinding head 51 and the cornering head 65 in the Y direction.
And a head moving device 81a that moves the grinding head 51a and the cornering head 65a in the Y direction.
The head moving devices 81 and 81a are arranged on the base 19 so as to face each other in the Y direction. The adjusting means 80 causes the head moving device 81 to move the grinding head 51 and the cornering head 65 in the Y direction, and
As a result, the grinding head 51a and the cornering head 65a are set to Y.
, The grinding wheels 55 and 55a
In the Y direction and the cornering wheels 67 and 6
The gap 7a in the Y direction is adjusted according to the width of the glass plate 2 to be processed in the Y direction.

The head moving devices 81 and 81a are similarly formed. Therefore, the head moving device 81 will be described below, and the description of the head moving device 81a will be omitted by attaching the symbol a to the drawings as necessary.

The head moving device 81 is connected to an electric motor (servo motor) 85 attached to the base 19 and an output rotating shaft of the electric motor 85, and is rotatably supported by the base 19 in the X direction. Shafts 86, bevel gears 87 and 88 fixed to the shaft 86, and bevel gears 89 and 90 meshed with the bevel gears 87 and 88.
And a ball screw shaft 91 that is rotatably supported by the base 19 and extends in the Y direction fixing the bevel gear 89 at one end, and is rotatably supported by the base 19 and has a bevel gear 90 at one end. A fixed ball screw shaft 92 extending in the Y direction, a pair of rails 93 extending and fixed to the base 19 in the Y direction, ball nuts 130 and 131 screwed to the ball screw shafts 91 and 92, respectively; Rail 9
3 and the ball nut 130, respectively.
, And a moving table 95 to which the slider 94 is fixed. Head moving device 81
Rotates the shaft 86 by the operation of the electric motor 85, rotates the ball screw shafts 91 and 92 via the bevel gears 87, 88, 89 and 90 by this rotation, and rotates the ball screw shafts 91 and 92 respectively by the rotation. The moving table 95 to which the screwed ball nuts 130 and 131 are fixed is moved in the Y direction, and thus the grinding head 51 and the supporting frame 64 supported by the moving table 95 via the support frame 54 and the like. Supported cornering head 65
Is moved toward and away from the grinding head 51a and the cornering head 65a.

The control means includes direct drive motors 41 and 41a with brakes, electric motors 29 and 29a,
76, 76a, 85 and 85a and the spindle motor 5
6, 56a, 68 and 68a are connected to the vacuum suction pump of each suction device 12 to control the above and below described operations.

The control means may be embodied, for example, to numerically control the above and below operations by a numerical controller, or to control the above and below operations by a program stored in a microcomputer in advance. May be embodied.

The glass plate processing apparatus 1 of the present embodiment is used to grind the opposite side edges 45 and 45a of the thin glass plate 2 in the Y direction and the Y plate of the glass plate 2 by using the glass plate processing apparatus 1. In the case of performing the cornering process for cornering the opposing corner portions 48 and 48a facing each other in the direction, first, the adjusting means 80
Thus, the distance between the grinding wheels 55 and 55a in the Y direction and the distance between the cornering wheels 67 and 67a in the Y direction are adjusted according to the width of the glass plate 2 in the Y direction.

Next, on the loading side 115 of the glass plate 2 in the X direction, the glass plate 2 is placed on the suction holding surface 11 of one glass plate holding unit 3, and one side of the placed glass plate 2 is sucked by the suction device 12. The glass plate 2 is sucked and held on the suction holding surface 11 by the suction device 12, and the holding table 4 on which the glass plate holding portion 3 is mounted is moved to the reciprocating device 20.
To move in the X direction. The reciprocating device 2 is synchronized with the start of the forward movement of the holding table 4 by the reciprocating device 20.
The return movement of the holding table 4a by 0a is started.

Next, during the reciprocating motion of the holding table 4 by the reciprocating device 20, the grinding wheels 5 which are close to each other and are on standby
5 and 55a are connected to the edge 4 of the glass plate 2 moved in the X direction.
5 and 45a, respectively, and the edges 45 and 45a of the glass plate 2 are ground. After the grinding, the cornering wheels 67 and 6 calculated by the arithmetic unit 106
At the beginning of the movement of 7a, the cornering wheels 67 and 67a
Are moved from the standby position where they are in close proximity to each other at a moving speed or the like calculated by the arithmetic unit 106 so that they are separated from each other and separated from each other.
The cornering wheels 67 and 67a are brought into contact with the corners 48 and 48a on the front edge 108 side of the glass plate 2 moved in the X direction, respectively, so that the glass plate 2 moves in the X direction and the cornering wheels 67 and 67a are moved. Then, the corners 48 and 48a on the front edge 108 side of the glass plate 2 are chamfered. After the corners 48 and 48a on the front edge 108 side, the cornering wheels 67 and 67a stand by at a standby position where they are separated from each other. At the start of the movement of the cornering wheels 67 and 67a calculated by the arithmetic unit 106, the cornering wheels 67 and 67a are moved from the standby position where they are separated from each other and in a standby state.
Are moved to each other at a moving speed or the like calculated by
And 67a are connected to the rear edge 1 of the glass plate 2 moved in the X direction.
The glass plate 2 is moved in the X direction while the corners 48 and 48a of the
And 67a are brought into close proximity, so that the rear edge 10
A cornering process is performed on the corners 48 and 48a on the 9th side. During the processing of the glass plate 2 by the processing means 8, the grinding wheel 55
55a and the cornering wheels 67 and 67a are respectively rotated by the operation of the respective spindle motors 56, 56a, 68 and 68a.

Next, on the carry-out side 116, shortly before the holding table 4 reaches the forward end portion 17, the suction of the processed glass plate 2 by the suction device 12 on the one surface 9 is released. Thereby, the suction holding of the glass plate 2 is released, and the glass plate 2 from which the suction holding is released is carried out from the suction holding surface 11 of the glass plate holding unit 3. After the glass plate 2 is unloaded, when the holding table 4 reaches the forward end portion 17 by the reciprocating device 20, the motor 41 is operated, and the rotation of the rotating shaft of the motor 41 causes the glass plate to pass through the holding table 4. Holder 3
Is rotated by 180 degrees, and the glass plate holding section 3 is moved from the moving path 5 to the moving path 6 by this turning, and the reciprocating device 20 of the holding table 4 starts the reciprocation. The holding table 4a
Synchronously with the arrival of the holding table 4 at the forward end 17, the motor 4a is operated when the holding table 4 reaches the return end 18, and the holding table 4a is rotated by the rotation of the rotating shaft of the motor 41a.
The glass plate holding part 3 is turned 180 degrees through the above, and by this turning, the glass sheet holding part 3 is moved from the moving path 6 to the moving path 5.
To the suction holding surface 11 of the glass plate holding unit 3.
The glass plate 2 to be processed is placed thereon, and the reciprocating device 20a of the holding table 4a on which the glass plate holding unit 3 on which the glass plate 2 is placed is started to move forward.

The glass sheet processing apparatus 1 of this embodiment processes the glass sheet 2 held by the glass sheet holding section 3 while the moving means 7 moves the holding tables 4 and 4a, respectively. However, the processing may be performed on the glass plate 2 held by the glass plate holding unit 3 during the reciprocation of the holding tables 4 and 4 a by the moving means 7. During the reciprocation of the holding tables 4 and 4a by the moving means 7, the glass plates 2 held by the respective glass plate holding units 3 may be processed. Further, the glass sheet processing apparatus 1 of the present embodiment may further include a rotation unit for rotating each glass plate holding unit 3 around an axis extending in the Z direction. The glass plate 2 held by the plate holding unit 3 may also be rotated to process the entire periphery of the glass plate 2.

[0059]

According to the present invention, it is possible to provide a method and an apparatus for processing a glass plate which can process the glass plate with high precision and can improve the production amount.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of an example of an apparatus for processing a glass sheet according to the present invention.

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

FIG. 3 is an explanatory view taken along line III-III of the example shown in FIG. 1;

FIG. 4 is an explanatory sectional view taken along line IV-IV of the example shown in FIG. 1;

FIG. 5 is an explanatory diagram mainly illustrating a holding table and a moving unit in the example illustrated in FIG. 1;

FIG. 6 is an explanatory sectional view taken along line VI-VI of the example shown in FIG. 1;

FIG. 7 is an explanatory sectional view taken along line VII-VII of the example shown in FIG. 1;

FIG. 8 is an explanatory diagram mainly showing a glass plate holding portion and a holding table of the example shown in FIG. 1;

FIG. 9 is a block diagram mainly illustrating a determining unit in the example shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glass plate processing apparatus 2 Glass plate 3 Glass plate holding part 4, 4a Holder 5, 6 Moving path 7 Moving means 8 Processing means 80 Adjusting means

Claims (15)

[Claims] 1. A pair of holding plates each having a glass plate holding unit for holding a glass plate are reciprocated while crossing each other, and in a forward stroke of each holding plate, the glass plate mounted on the holding plate is reciprocated. The holding unit is moved on one common moving path, and in the return stroke of each holding table, the glass plate holding unit mounted on the holding table is moved on another moving path different from one moving path, A glass sheet processing method for processing a glass sheet held by a glass sheet holding unit mounted on the holding table in at least one of a forward movement stroke and a backward movement stroke of each holding table. 2. The glass sheet processing method according to claim 1, wherein the forward movement of one holding table and the backward movement of another holding table are synchronized. 3. The glass plate holding part is moved from one movement path to another movement path at the forward end, and the glass sheet holding part is moved one movement from the other movement path at the return end. The method for processing a glass sheet according to claim 1, wherein the glass sheet is moved to a road. 4. The glass plate according to claim 1, wherein at least one of a grinding process for grinding an edge of the glass plate and a cornering process for cornering a corner of the glass plate is performed. The method for processing a glass plate according to item 1. 5. A pair of holding tables each having a glass plate holding section for holding a glass plate, and a pair of holding tables are reciprocated while crossing each other. The glass plate holding part mounted on the holding table is moved on one common movement path, and in the return stroke of each holding table, the glass sheet holding part mounted on the holding table is moved to another one different from the one moving path. A moving means for moving on a moving path, and holding at least one of a forward movement stroke and a backward movement stroke of each holding table reciprocated by the moving means with a glass plate holding unit mounted on the holding table. And a processing means for processing the glass sheet. 6. The apparatus for processing a glass sheet according to claim 5, wherein the moving means synchronizes the forward movement of one holding table with the backward movement of another holding table. 7. The moving means moves the glass plate holding part from one moving path to another moving path at the forward end, and moves the glass plate holding part to the other one at the backward end. The apparatus for processing a glass sheet according to claim 5 or 6, wherein the apparatus is adapted to move from a moving path to one moving path. 8. The moving means includes a turning mechanism for turning each of the glass plate holders. The turning mechanism turns each of the glass plate holders at the forward end so as to rotate each of the glass plate holders. The glass plate holders are respectively moved from one movement path to another one movement path, and at the return end, the respective glass plate holders are turned so that each glass plate holder is moved to another one. The apparatus for processing a glass sheet according to any one of claims 5 to 7, wherein the apparatus is adapted to move from a moving path to one moving path. 9. A turning mechanism is provided around an axis extending in a direction orthogonal to a reciprocating direction in which each holding table reciprocates.
9. The apparatus for processing a glass sheet according to claim 8, wherein each of the glass sheet holding portions is turned. 10. The moving means includes a pair of reciprocating devices for reciprocating a pair of holding tables, respectively, and the pair of reciprocating devices each includes a driving path for driving the holding table. 6. The driving path according to claim 5, wherein the pair of holders are arranged at intervals such that the pair of holders can reciprocate while passing each other.
10. The apparatus for processing a glass sheet according to any one of claims 1 to 9. 11. Each drive path includes a screw shaft, and the pair of reciprocating devices each include a rotary drive device for rotating the screw shaft. The pair of screw shafts includes a pair of screw shafts. 11. A pair of rotary driving devices are arranged with a pair of screw shafts interposed therebetween.
The glass sheet processing apparatus according to claim 1. 12. A glass plate holding unit, comprising: a suction holding surface for sucking and holding a glass plate from one surface thereof; and a suction for sucking one surface of the glass plate so as to suck and hold the glass plate on the suction holding surface. And a device.
The glass plate processing apparatus according to any one of claims 1 to 4. 13. The processing means, wherein the processing means performs at least one of a grinding process for grinding an edge of the glass plate and a corner processing for forming a corner of the glass plate. Item 13. The apparatus for processing a glass sheet according to any one of Items 5 to 12. 14. The processing means includes a pair of grinding tools and a pair of cornering tools, and performs a grinding process of grinding both opposing edges of the glass sheet with the pair of grinding tools, and a pair of cornering tools. 14. A chamfering process for chamfering both opposing corners of a glass sheet with a tool.
The glass plate processing apparatus according to any one of claims 1 to 4. 15. The glass sheet processing apparatus according to claim 14, further comprising adjusting means for adjusting a distance between the pair of grinding tools and a distance between the pair of cornering tools.