JP4290784B2 - Glass scriber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a glass scriber that scribes a glass plate set on a table.
[0002]
[Prior art]
FIG. 15 shows a schematic diagram of “Panel Cleaving Device” of Real Japanese Utility Model Publication No. 7-18737. The scribing heads 102 and 103 each having the chip holder 101 at the lower end are provided so as to be movable along the support member 104 in the Y direction, and are provided so as to be movable up and down. The support member 104 is provided so as to be movable along the guide bar 106 in the X direction by a moving member 105. The table 107 on which the workpiece is set is movable in the Y direction, and each time the table 107 moves in the Y direction, the support member 104 moves in the X direction, so that two scribe lines on the workpiece are moved in the X direction. When engraved and scribed in the Y direction, the table 107 is rotated 90 °.
[0003]
[Problems to be solved by the invention]
Thus, it is necessary to move the table 107 in the Y direction in order to change the scribe position, and to rotate the table 107 when scribing in the Y direction. However, this apparatus requires a mechanism for rotating the table 107, and since the weight of the table itself is large, a powerful and large rotation mechanism is required. Further, since a space for rotating the table 107 is required, the apparatus becomes large.
[0004]
The liquid crystal panel on which the two glass plates are bonded is scribed in order to cleave the large size liquid crystal panel into the product size, but the two bonded glass materials are often different. For this reason, at the time of scribing on the front and back surfaces, a scribe pressure and a cutting edge suitable for each material must be used. Further, depending on the liquid crystal panel pattern, it is necessary to set a scribe pressure for each scribe line. Conventionally, such a flexible pressure setting as described above could not be performed, and panel cutting failure was likely to occur. In addition, it is necessary to replace the cutting edge for each scribing on the front and back surfaces, and there is a problem of reducing the operating rate of the apparatus.
[0005]
The present invention has been made to solve the above-described problems, and provides a small and multifunctional glass scriber with a twin head that can easily scribe in the X direction and the Y direction without moving or rotating the table. The purpose is to do. In addition, a scribing method that can perform scribing at an optimal scribing pressure according to the scribing situation is provided.
[0006]
[Means for Solving the Problems]
According to the scriber of the present invention, the holder support (8) for holding the two chip holders (16) can be moved in the Y direction, and the holder support (8) can be moved by 90 °. In the rotated state, it can also move in the X direction, and scribes in two directions in the X and Y directions without moving the table (1).
[0007]
In order to perform scribing even when the scribe heads (11, 12) are retracted, the tip holder (17) is rotated by 180 °. However, due to the influence of the processing accuracy of the wheel tip and the assembly accuracy of the shaft rotation mechanism, Even if the same part is scribed during forward and backward movement, the scribe lines during forward and backward movement often do not match. Therefore, in the present invention, as described in claim 2, the amount of deviation between both scribe lines is measured in advance, and the position of the chip holder (17) is corrected by the amount of deviation during backward scribing.
[0008]
The workpiece to be machined may not be set at a fixed position on the table due to the individual dimensional accuracy. In order to absorb this displacement, the holder support (8) is displaced in the direction of the displacement angle when scribing. The holder support (8) is rotated by a small angle so that the orientation of the cutter wheel tip (16) matches the scribe direction.
[0009]
According to a fourth aspect of the present invention, the table (1) can be rotated by a small angle in order to eliminate the displacement.
[0010]
By providing means that can freely adjust the scribe pressure, as shown in claim 5, it is possible to scribe at an optimum scribe pressure set in advance according to the portion to be scribed.
[0011]
Since the method of scribing at the optimal scribing pressure set in advance according to the scribe location can be applied not only to the twin head scriber targeted by the present application but also to a general one head scriber, the glass scribe method according to claim 6 I am charging.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view of a glass scriber of a twin head mechanism showing an embodiment of the present invention, and a control block diagram thereof is shown in FIG. Reference numeral 1 denotes a fixed table, and a work (liquid crystal panel) W is sucked and fixed to the table surface. Reference numeral 2 denotes a gantry provided so as to straddle the table 1 and is composed of support pillars 3 on both sides and guide bars 4 in the X direction. The lower portion of the support column 3 is movably engaged with a rail 5 extending in the Y direction, and the gantry 3 is moved in the Y direction by driving a motor My (FIG. 2).
[0013]
A moving member 6 is provided so as to be movable along a guide formed on the guide bar 4 and moves in the X direction by driving a motor Mx (FIG. 2). Reference numeral 7 denotes a motor Mθ attached to the moving member 6. The motor Mθ is rotated by a 90 ° axis and can be rotated by a minute angle at rotation positions of 0 ° and 90 °. The mechanism of this part will be described with reference to an enlarged view seen from the side of FIG. Reference numeral 8 denotes an inverted T-shaped holder support attached to the rotating shaft of the motor 7. Reference numerals 9 and 10 denote scribing head bases which are movable along guides formed on the holder support 8, and are moved by driving linear motors M5 and M6 (FIG. 2), respectively. These pedestals 9 and 10 are respectively provided with a first scribe head 11 and a second scribe head 12 and, as shown in FIGS. 4 and 5, rotate the scribe heads 11 and 12 about the axis 180 degrees. Air rotors 13 and 14 are provided. Reference numeral 15 denotes a belt for transmitting the rotation of the air rotor.
[0014]
At the bottom of the scribing heads 11 and 12, Ru chip holder 17 is provided to hold the cutter wheel chip 16 rotatably.
[0015]
In the first scribe head 11 shown by partial fracture in FIG. 4, 18 is an air cylinder for raising and lowering the scribe head 11, and 19 is an air cylinder for applying a desired scribe pressure to the chip holder 17. It is. FIG. 5 shows the second scribe head 12, and the arrangement of the devices is switched between the left and right as compared with FIG. 4, but this can draw a scribe line at a narrow interval when scribing with the scribe heads approaching each other. This is because of doing so.
[0016]
Returning to FIG. 1, reference numeral 21 denotes a camera that reads an alignment mark written on the workpiece W as an image, and is provided on a pedestal 22 provided so as to be movable in the X direction and the Y direction. It can be moved manually along the extended guide. M1 (FIG. 2) is a motor for moving the camera 21 in the X direction, and M2 is a motor for moving the camera 21 in the Y direction. The camera 21 can be moved up and down by manual operation for focus adjustment. Reference numeral 24 is the same as the pedestal 22, and this pedestal 24 is also provided with a camera 23 (FIG. 2) and similarly motors M3 and M4 (FIG. 2). Reference numerals 25 and 26 are monitors for displaying images captured by the cameras 21 and 23.
[0017]
In the above configuration, if the moving member 6 is moved in the X direction while the gantry 2 is moved in the Y direction, the scribe heads 11 and 12 can be moved in an oblique direction and scribed in an arbitrary direction.
[0018]
Next, in FIG. 2, 51 is a CPU that centrally controls the scriber. A ROM 52 stores a control program executed by the CPU 51. A RAM 53 stores various setting data. Reference numeral 54 denotes an operation and data input unit that inputs scribe data and the like and includes various operation keys. An image processing unit 55 calculates the position of the alignment mark based on the imaging data obtained by the cameras 21 and 23. Signals from the operation and data input unit 54 and the image processing unit 55 are taken into the CPU 51 via the input unit 56.
[0019]
Reference numeral 61 denotes a driver that drives the motors Mx, My, and Mθ, and reference numeral 62 denotes an encoder that detects the driving amounts of these motors and feeds back to the driver 61. Reference numerals 63 and 64 denote XY stage controllers that drive the motors M1 and M2 and M3 and M4. Reference numerals 65 and 66 denote drivers for driving the linear motors M5 and M6. 67 is an electropneumatic regulator for controlling the air cylinder 19 (FIG. 4) of the scribe head 11, and generates 256 types of scribe pressures for signals of 0 to 255. The electropneumatic regulator 68 is for the scribe head 12. Reference numeral 69 denotes a vacuum valve used to vacuum-suck the work W onto the table. 70 is a valve for operating the air cylinder 18 of the scribe head 11, and the valve 71 is for the scribe head 12. Reference numerals 72 and 73 are valves for operating the air rotors 13 and 14. Each of these devices is controlled by the CPU 51 through the output unit 74.
[0020]
The control operation of the present glass scriber will be described below with reference to the flowcharts of FIGS.
Initially, as an initial setting, a dummy glass is set on the table 1 in step S1 of FIG. In step S2, parameter data such as scribe data and alignment mark position data are input. In step S3, three reference lines L1 to L3 are passed from the position data of the two alignment marks stored on the apparatus side to the dummy glass W ′ as shown in FIG. 9 so as to pass through the alignment marks. Is scribed. Therefore, the intersection points Qm and Qn at this time are the positions of the alignment marks.
[0021]
In step S4, as shown in FIG. 10, the camera is moved so that the centers O and O ′ of the imaging areas W and W ′ of the cameras 21 and 23 coincide with the intersection points Qm and Qn. Next, in order to measure the scribe displacement when reciprocating with the scribe heads 11 and 12, in step S5, while moving the gantry 3 in the Y direction (forward direction) , both scribe heads 11 as shown in FIG. , 12 scribe two scribe lines S1 and S2 (upward lines in the figure), and then rotate the chip holder 17 by 180 ° and move the gantry in the -Y direction (reverse direction). Engrave ', S2' (downward line in the figure). (In this specification, when the X direction and the Y direction mean one of two directions, the X direction (forward direction), -X direction (reverse direction), Y direction (forward direction), -Y direction ( (The reverse direction.) As can be seen from the above description, the forward direction is the upward direction, and the reverse phrase is the downward direction.)
[0022]
In step S6, each scribe line is photographed by the cameras 21 and 23 , and the deviation amount during the reciprocating scribe is measured from the images. In the partially enlarged view of FIG. 11, the scribe line S1 ′ is shifted 20 μ to the left with respect to the scribe line S1, and the scribe line S2 ′ is shifted 30 μ to the right with respect to the scribe line S2. This completes the initial setting.
[0023]
Next, the scribe operation will be described with reference to the flowchart of FIG. In step S11, the work W is set in the table 1. FIG. 12 shows imaging areas W and W ′ by the cameras 21 and 23 at this time. M and N are alignment marks written on the workpiece. If there is no machining error of the workpiece W and there is no positional deviation when the workpiece W is set on the table 1, the alignment marks M and N are the imaging centers O, Although it should match O ′, in practice it is often shifted as shown in FIG. In step S <b> 12, images including alignment marks M and N are captured by the cameras 21 and 23 . In step S13, each data is calculated, and the details will be described with reference to the subroutine of FIG.
[0024]
In step S51, the positions of the alignment marks M and N are recognized from the image data. In step S52, the inclination of the alignment mark MN line with respect to the line connecting the imaging centers O and O ′ (this value is known from the parameter input in step S2) is calculated. In step S53, a scribe start point and an end point when scribing in the X direction (forward direction) are calculated, and a scribe start point and an end point when scribing in the -X direction (reverse direction) are calculated. In step S54, a scribe start point and an end point when scribing in the Y direction (forward direction) are calculated, and a scribe start point and an end point when scribing in the -Y direction (reverse direction) are calculated.
[0025]
Returning to step S14, the orientation of the holder support 8 is finely adjusted so that the orientation of the cutter wheel tip 16 coincides with the scribe direction. This scribe direction coincides with the inclination of the MN line calculated in step S52.
[0026]
In step S15, the scribing start point and end point calculated in step S54 are read in order to perform scribing in the Y direction (forward direction) . FIG. 13 shows a case where scribing is performed in the Y direction at intervals of 5 mm. The start and end points of the first scribe head 11 are 5 and 6, respectively, and the start and end points of the second scribe head 12 are 50 and 50 respectively. 51, the first and second scribe heads 11 and 12 are moved to 5, 50 as scribe positions, and a preset scribe pressure is applied to each chip holder 17 in this state, and the respective scribe heads Scribing in the Y direction (positive direction) is performed by moving the holder support 8 in an oblique direction so that the end point becomes 6,51.
[0027]
In step S16, the start point 11 and end point 10 of the first scribe head 11, the start point 56 and end point of the second scribe head 12, as shown in FIG. 13, to perform scribing in the opposite direction (−Y direction). 55 is read out. When the scribing is performed based on the data, as shown in FIG. 11, the scribing lines by the first and second scribing heads 11 and 12 are shifted 20 μ to the left and 30 μ to the right, respectively. 11, the start point and end point are each corrected by 20 μ to the right, and for the second scribe head 12, the start point and end point are corrected by 30 μ to the left. After the scribing heads 11 and 12 have moved to the corrected starting point, a predetermined scribing pressure is set and scribing is performed in the -Y direction (reverse direction) .
[0028]
In step S17, it is determined whether all Y-direction scribes have been completed. If not, the process returns to step S15. Next, as shown in FIG. 13, the start point 15, the end point 16, the start point 60, and the end point 61 are scribed. Is executed.
[0029]
When scribing in the Y direction is completed, the holder support 8 is rotated 90 ° in step S18 for scribing in the X direction. In steps S19 and S20, scribing in the X direction (forward direction) and -X direction (reverse direction) is executed in the same procedure as that performed in steps S15 and S16.
[0030]
In the above embodiment, the first and second scribe heads 11 and 12 can be freely moved in the X direction. However, the first scribe head 11 is semi-fixed and only the second scribe head 12 is movable. Then, the control mechanism is simplified. In that case, the position change of the first scribe head 11 corresponds to the movement of the holder support 8.
[0031]
In the above embodiment, the moving direction of the scribe heads 11 and 12 is moved in the direction of the shift angle in order to absorb the shift angle of the workpiece. However, the table 1 may be rotated by the shift angle. The heads 11 and 12 are moved in parallel and perpendicular to the guide bar 4.
[0032]
In the above embodiment, the operation is described as a twin-head scriber that simultaneously scribes using two scribe heads 11 and 12, but, for example, when scribing a laminated glass substrate such as a liquid crystal panel, When the scribing conditions and cutting edge specifications of each surface are different due to differences in glass material and thickness, it can also be used as a one-head scriber that operates the scribe heads 11 and 12 independently. Further, even when the height of the scriber is different between the scribe heads 11 and 12 as shown in FIG. 14, it can be effectively used not only as a one-head scriber but also as a twin-head scriber.
[0033]
【The invention's effect】
As described above, according to the present invention, the holder support that holds the scribe head can be rotated by 90 °, and the workpiece can be scribed in the X direction and the Y direction without turning the table. A mechanism for rotating a large table is not required, and the apparatus can be simplified and downsized.
In addition, when scribing when the scribe head moves forward and backward, the scribe deviation at the time of backward movement with respect to the forward time is measured in advance, and the position of the scribe head is corrected by the deviation at the time of scribe at the time of backward movement, so that the scribe accuracy can be improved. it can.
In addition, there is a means to freely adjust the scribe pressure, and the scribe pressure data that has been registered in advance according to the scribe location is read and the desired scribe pressure is set. Scribing can be done with scribe pressure.
[Brief description of the drawings]
1 is a perspective view showing an embodiment of a glass scriber according to the present invention. FIG. 2 is a control block diagram applied to the glass scriber in FIG. 1. FIG. 3 is a view showing a moving member, a motor, a holder support, and a scribe head. Side view showing details [FIG. 4] FIG. 5 is a partially broken configuration diagram of the first scribe head and the air rotor that rotates the shaft. FIG. 5 is a configuration diagram of the second scribe head and the air rotor that rotates the shaft. 6 is a flowchart showing the control of the glass scriber in FIG. 1. FIG. 7 is a flowchart showing the control of the glass scriber in FIG. 1. FIG. 8 is a flowchart showing the control of the glass scriber in FIG. FIG. 10 shows a state in which the reference line is scribed. FIG. 10 shows that the camera photographing centers O and O ′ are positioned at the reference points Qm and Qn. FIG. 11 is a diagram showing the displacement of both scribe lines when the scribe head is moving forward and backward. FIG. 12 is a displacement between the alignment marks M and N marked on the workpiece and the photographing centers O and O ′. [Fig. 13] Fig. 13 is a diagram showing displacement correction by scribing when reversing. [Fig. 14] Fig. 15 is a diagram showing a state of scribing a work with a twin head scriber. [Fig. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Table 2 Gantry 3 Support pillar 4 Guide bar 6 Moving member 8 Holder support body 9 and 10 Scribing head base 11 and 12 Scribing head 13 and 14 Air rotor 16 Cutter wheel chip 17 Chip holder 18 and 19 Air cylinders 21 and 23 Camera 25 , 26 Monitor 67, 68 Electropneumatic regulator W Workpiece

Claims (6)

A table (1) on which a workpiece is set, a guide bar (4) extending in the X-axis direction above the table (1), and a guide bar moving means for translating the guide bar (4) in the Y-axis direction And a movable member (6) provided so as to be movable along the guide bar (4), and a holder support (8) described later, which is provided on the movable member (6), is rotatably held by 90 °. Two scribing heads (11, 12) provided to the rotating means (7) and the holder support (8) so that the distance between them can be adjusted and individually raised and lowered, and a cutter wheel at the lower end. A chip holder (17) provided on each of the scribe heads (11, 12).
Without moving the table, when scribing in the Y direction, the guide bar (4) is moved in the Y direction, and when scribing in the X direction, the holder support (8) is rotated 90 ° and the moving member (6 ) To move the holder support (8) in the X direction.   In order to perform scribing even when the scribing heads (11, 12) are moved backward, each chip holder (17) is provided with means for rotating the shaft by 180 °, and both scribe lines are moved forward and backward when the guide bar (4) moves forward and backward. The glass scriber according to claim 1, wherein a deviation amount is measured in advance, and the position of the chip holder (17) is corrected by the deviation amount during backward scribing.   The deviation angle of the set work is detected, and at the time of scribing, the holder support (8) is moved in the direction of the deviation angle, and the holder support (8) so that the direction of the cutter wheel tip (16) matches the scribe direction. The glass scriber according to claim 1 or 2, wherein the glass scriber rotates at a small angle.   The glass scriber according to claim 1 or 2, wherein the table (1) can be rotated by a small angle so as to absorb a deviation angle of the set work.   The glass scriber according to any one of claims 1 to 4, wherein the chip holder (17) is provided with means capable of setting an optional scribe pressure, and scribes with a scribe pressure set in advance according to a scribe position. A fixed table (1) on which a workpiece is set, a guide bar (4) extending in the X-axis direction above the table (1), and a guide for translating the guide bar (4) in the Y-axis direction A bar moving means, a moving member (6) provided so as to be movable along the guide bar (4), and a holder support (8) which is provided on the moving member (6) can be rotated by 90 °. Two scribing heads (11, 12) provided to the holder means (8) so that the distance between the rotating means (7) and the holder support body (8) can be adjusted and moved up and down individually, and the lower end. In a glass scribing method using a glass scriber comprising a cutter wheel tip (16) and a tip holder (17) provided on each of the scribe heads (11, 12),
When scribing in the Y direction, move the guide bar (4) in the Y direction,
Of the time scribing the X direction, by the movement of the moving member (6) holder support (8) while 90 ° rotation, scribing glass, characterized in that moving the holder support (8) in the X direction Law.

Images