JP3078668B2 - Automatic glass scriber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic glass scriber which scribes in the X and Y directions by a cutter with reference to an alignment mark written on a glass plate.

[0002]

2. Description of the Related Art A rotatable table moves in a Y direction,
FIGS. 1 and 2 show a side view and a front view of a glass scriber in which a cutter head moves in the X direction. The table 41 on which the glass plate is set is placed on a turntable 42, and the turntable 42
A ball screw 44 directly connected to the rotation shaft of the table feed motor 43 is movable along two rails 45 extending in the Y direction (the horizontal direction in FIG. 1). On the other hand, a cutter head 46 having a glass cutter is movable on a rail 47 extending in the X direction (horizontal direction in FIG. 2) by driving a cutter shaft motor 48. Then, CCD cameras 49 and 50 for taking in two alignment marks written on the glass plate on the table 41 are provided to be position-adjustable by camera support brackets 51 and 52.

A scribe operation in the above apparatus will be described. The coordinate data of the alignment marks (M1 and M2 shown in FIG. 3) and the data of the scribe pitch (“Px” and “Py” shown in FIG. 4) written on the glass plate to be scribed are stored in the control unit (not shown) of this apparatus. (Shown) is set in advance. First, one glass plate is set as a dummy glass at a predetermined position on the table 41. Thereafter, by turning on a reference line setting switch (not shown), the cutter head 46 is moved on a line connecting two points of both alignment marks to scribe one reference line in the X direction. FIG. 3 shows the imaging areas W ₁ and W ₂ of the CCD cameras 49 and 50 at this time, and Lt is the reference line. Here, the CCD cameras 49 and 50 are individually moved in the Y direction such that the imaging centers O ₁ and O ₂ of the imaging regions W ₁ and W ₂ overlap the reference line Lt. As a result of this operation, there is no shift in the Y direction between the cutter line by the cutter head 46 and the imaging centers O ₁ and O ₂ .

In FIGS. 3 and 4, the deviation of the alignment marks M1 and M2 from the reference line Lt is due to a dimensional error of the glass plate and a positional deviation at the time of setting on the table 41. In order to correct this misalignment, the table 41 is rotated and moved in the Y direction so that the alignment marks M1 and M2 overlap the line connecting O _{1 and} O ₂ . That is, as shown in FIG. 3, in the imaging area W _1, alignment marks M1
Shifts from the O ₁ -O ₂ line Lt to the upper side in the figure, and the imaging region W
_{In 2} , when the alignment mark M2 is shifted below the O ₁ -O ₂ line Lt, first, a line connecting the two alignment marks M1 and M2 is a reference line Lt.
By rotating the table 41 in the counterclockwise direction so as to be parallel to and then moving the table 41 in the Y direction, the alignment marks M1 and M2 can be overlapped on the O ₁ -O ₂ line. . At this time, the turning angle of the table 41 and the amount of movement in the Y direction are stored as initial settings for the subsequent glass plates. Then, the imaging center O ₁ ,
The O ₂ to match on the alignment marks M1, M2, to move the CCD camera 49 in the X direction.
By this operation, the cutter line completely matches the line connecting both alignment marks M1 and M2, and the initial setting is completed.

Next, a glass plate to be processed is placed on a table 41.
In the table 41 based on the initial setting values.
Is turned and moved in the Y direction. At this time, if there is no dimensional error from the previous dummy glass and no positional deviation at the time of setting, the alignment marks (M1 ′, M
2 ′) is the imaging center O ₁ of the CCD cameras 49 and 50,
It should exactly match O ₂ , but actually does not match because there are various errors, and here it is assumed that there is a displacement as shown in FIG.

[0006] In this case, image processing is performed for each imaging region.
(Disclosed in Japanese Patent Application No. 4-106425, which is a basic application of the present application, the details of which are described in the following embodiment).
2 ′ is detected and the centers O ₁ , O ₂ of the imaging regions W ₁ , W ₂ are detected.
₂ (same as the positions of M1 and M2 in the previous glass sheet), a rotation correction angle of the table 41 is obtained from the amount of the shift, and the table 41 is rotated by the rotation table 42 by that angle. As a result, as shown in FIG. 4, the line (M1'-M2 ') that should be scribed
Direction) is parallel to the cutter direction (O ₁ -O ₂ direction). X direction and the Y direction deviation amount a of the alignment marks M1 'than imaging center O ₁ in this state, b are obtained.

After that, the table 41 is moved in the Y direction so that the line to be scribed in the X direction with respect to the glass plate is directly below the cutter head. This movement amount is (G + a), where G is the distance in the Y direction from the alignment marks M1 ′, M2 ′ to the first scribe line in the X direction. Thereafter, each time the table 41 moves in the Y direction at the designated scribe pitch Py, it is scribed in the X direction by the cutter head 46. When this is completed, the table 41 is turned by 90 °, and then the table 41 is moved in the same manner as the scribe in the X direction. That is, assuming that the distance from the line in the Y direction passing through the alignment mark M1 'to the first scribe line in the Y direction is H, the amount of movement of the table 41 is (H + b), and the distance in the Y direction follows the scribe pitch Px in the X direction. Scribed. The previous dummy glass plate can be used as a glass plate to be processed as it is with the displacement amounts a and b set to 0.

In the glass scriber shown in the side view in FIG. 5 and the front view in FIG. 6, a cutter head 46 is driven by a cutter shaft motor 48 and a cutter bridge drive motor 61 on a rail 47 and a rail 62 with respect to a rotatable table 41. Along the X and Y directions. Also in this device, the camera support bracket 5
CCD cameras 49, 5 so that movement can be freely adjusted by
0 is provided. The operation of the scribe is almost the same as that shown in the previous example, and thus the description thereof is omitted.

[0009] In two of the above-described devices micromotion turn the table in order to correct the deviation between the direction to be scribed on a glass plate (M1'-M2 'direction) and cutter direction (O ₁ -O ₂ direction) A mechanism for moving the table is required, which not only complicates the table mechanism but also complicates the turning operation. Therefore, the present applicant has proposed an apparatus in which the table is fixed and scribing can be performed in the displaced direction (oblique direction) even if the set of glass plates is displaced (Japanese Unexamined Patent Publication No. Sho 64-009826). ). With this device, the work of turning the table can be omitted. The mechanism will be described below with reference to FIG.

Reference numeral 1 denotes a table on which a glass plate to be processed is placed. Reference numeral 2 denotes a reference pin provided on a predetermined portion of the table 1. The reference pin 2 presses an edge of the glass plate to a predetermined position. Is set to. 3
Is a bridge composed of a rectangular frame, is provided movably in the Y direction using a rail 4 extending in the Y direction as a guide, and a female screw 5 fixed to the bottom plate 3 a of the bridge 3.
The bridge 3 is moved in the Y direction by rotating the ball screw 6 screwed into the Y-axis by the Y-axis motor My.

The upper plate 3b of the bridge 3 is provided with a cursor 8 which can be moved in the X direction by using a rail 7 extending in the X direction as a guide. Is rotated by the X-axis motor Mx, so that the cursor 8 moves in the X direction. The cursor 8 is provided with a cutter head having a glass cutter, and the cutter head is provided so as to be rotatable in the X and Y directions in accordance with the cutting in that direction.

Reference numeral 10 denotes a support pole, 11 denotes an arm protruding horizontally from the support pole 10, and 12 denotes a support pole.
A CC provided at the tip of the arm 11 and positioned above the bridge 3 and the cursor 8 to capture a two-dimensional image
D camera. Incidentally, similarly, at the position S in the figure,
Support pole, arm and CCD camera (12 ')
Is provided. A monitor display device 13 displays images from the CCD cameras 12, 12 '.
Reference numeral 4 denotes an operation setting switch.

The scribe operation in the above device will be described below. First, as an initial setting, a glass plate 10 to be processed is set.
The position of the alignment mark printed at 0 and the length between the marks, and the scribe pitch Py for feeding the glass plate 100 in the Y direction are set and input. Then, after setting one dummy glass (referred to as 150) at a predetermined position on the table 1, the reference line setting switch is pressed.

As a result, as shown in FIG. 8, the direction in which the two alignment marks M1 and M2 are connected to the dummy glass 150 by the cutter head based on the setting data and the respective alignment marks M1 and M2 are passed through. A reference line L is provided in each direction orthogonal to the line.
₁ , L ₂ and L ₃ are scribed.

The intersections on the three reference lines at this time are A ₀ and B ₀ . If there is no dimensional error or misalignment at the time of setting in the dummy glass 150, this intersection point matches the position of the alignment marks M1 and M2 on the dummy glass 150, but does not have to match at this stage. At this time,
When imaging region W _1, W ₂ of the camera 12, 12 'is that there was a position as shown in FIG. 8, where the imaging area W _1, W center O ₁ of _2, O ₂ is the intersection point A ₀ respectively , B ₀ , while watching the monitor display device 13,
The cameras 12, 12 'are moved, and the initialization is completed.

After that, the glass plate 100 to be processed is set on the table 1. If the set glass plate 100 has no dimensional error or misalignment at the time of setting, the imaging centers O ₁ and O ₂ match the alignment marks (M1 ′ and M2 ′) of the glass plate 100 as described above. However, since there is actually a slight error, the alignment marks M1 and M2 are deviated from the centers O ₁ and O ₂ as shown in FIG. 9, for example. The scribe direction is the O ₁ -O ₂ direction, and is not the M1-M2 direction, which should be scribed.

In this apparatus, the image pickup area W of the camera 12
By image processing (details described in Example) to respect, to detect the coordinates of the alignment marks M1, obtains a deviation of from the imaging center O _1, likewise the alignment mark M2 and the imaging also in the other camera 12 ' by determining the deviation between the center O _2, understand the direction of the line Cx connecting alignment marks M1-M2, 1 th scribe line L ₁₀₀ which distance G only is translated from the line Cx
Then, scribing is performed by the above-described cutter head capable of scribing in an arbitrary direction. Thereafter, scribing is performed in the same direction while moving the cursor 8 by the scribe pitch Py. At the time of scribing in the Y direction, scribing is performed in a line Cy direction orthogonal to the line Cx.

[0018]

However, in any of the above-described apparatuses, when the position of the alignment mark on the glass plate to be processed is changed, the CCD camera is moved to the intersection of the reference line. Work is required, and a mechanism for moving the CCD camera itself to an arbitrary position is required, and two CCD cameras are required.

In the case where the alignment mark is not printed like the glass plate of the test model or the alignment mark cannot be referred to due to poor printing accuracy, C
There is often a need to move the CD camera to an arbitrary position of the pattern on the glass plate and scribe while checking the pattern on the glass plate through the CCD camera.
However, in the conventional apparatus, such a scribing by manual operation cannot be performed because the CCD camera is fixed. Therefore, there is also a so-called teaching mode in which the main body memorizes a moving position and a moving amount of the cutter head in the manual operation as setting data. I couldn't do it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an automatic glass scriber capable of easily coping with a change in the type of a glass plate and enabling a manual scriber operation. And

[0021]

According to a first aspect of the present invention, there is provided a cutter head on which a glass cutter blade is mounted, a table on which a glass to be processed is mounted, and a movement of the cutter head in two orthogonal directions X and Y. Scribing means for scribing the glass to be processed, storage means for storing various coordinate data, and first and second 2
Optical reading means for reading the alignment marks M1 and M2 at the location; image processing means for detecting the coordinate positions of the M1 and M2 by processing signals from the optical reading means; A glass scriber comprising: a calculating means for performing a calculation, wherein the glass scriber scribes the glass plate at a predetermined pitch on the basis of the coordinate position; a) the optical reading means is one; b) the optical reading Means are integrally attached to the cutter head; c) the scribe means moves the optical reading means integrally with the cutter head; d) the image means comprises the optical reading means. The alignment mark M is located at a predetermined point O1 in the imaging area of FIG.
1, M2 are sequentially matched, and the coordinate values (x ₁ , y ₁ ), (x ₂ , y ₂ ) of the alignment marks M 1, M 2 by image processing.
Are sequentially obtained;

[0022]

The operation of the first invention will be described in the following case. That is, as shown in FIG. 10, a glass cutter blade C of a cutter head (not shown) mounted on a cursor 8 that moves in the X direction on the bridge 3 that slides in the Y direction, and an imaging area of the optical reading unit 12. And a predetermined point O ₁ in the X and Y directions is shifted by cx and cy, respectively. In this case, first, (A): actual scribe is performed in the X direction with a glass cutter, and the point O _{1 is} moved to the scribe line at that time.
The displacement amount cy is known from the movement amount when the bridge 3 is moved in the Y direction so that the overlap is made. Next, (B): scribe in the Y direction with a glass cutter, and then to the scribe line at that time. as point O ₁ overlap, the amount of movement when moving the cursor 8 to the X-direction, to know the amount of deviation cx, stores them shift amount in the storage means.

After the initial setting, a glass plate to be processed is set on the work table, and a predetermined scribe switch is turned on. Then, the position data of the first alignment mark M1 which has been set and inputted in advance is set. The coordinates are (x ₁ ,
y ₁ )), the cutter head is moved to the coordinates (x ₁ −
cx, y ₁ -cy), the displacement between the imaging center O ₁ and the alignment mark M ₁ is determined by the optical reading means 1.
2 optically read by, Similarly, for the second alignment mark M2 (coordinate (x _2, y _2)), to move the cutter head coordinates _{(x 2 -cx, y 2 -cy} ) to an imaging center O ₁ when the deviation of the alignment mark M2 is read. From these deviation amounts and the coordinate data of the alignment marks, a line Lm ₁ m ₂ connecting the two alignment marks M 1 and M 2 on the glass plate to be processed is obtained by calculation, and is parallel to this line Lm ₁ m ₂ a glass plate by moving the cutter head is scribed in the X direction, also, it is scribed in the Y direction by causing parallel movement in a direction perpendicular to the line Lm ₁ m _2.

The above two alignment marks M1, M
2 is the case where the mark is written along the edge of the glass plate, and the other alignment mark M2 is written at an arbitrary position with respect to the first alignment mark M1. As described above, the positions of the two alignment marks are obtained in the same manner as described above, and the intersection of the two lines when the lines are extended in the X direction and the Y direction from the obtained two positions is obtained by calculation. The intersection is set as the position of the third alignment mark M2 ', and scribing is performed by using the alignment marks M1 and M2' as a reference in the same manner as described in claim 1.

Even if both cx and cy are set to 0, it is possible to confirm in the above-mentioned initial setting work whether or not cx and cy are equal during the actual operation due to mounting errors and the like. preferable. If it is structurally guaranteed that one of cx and cy is 0,
Since only one of the other needs to be detected, the initial setting operation can be simplified.

When the glass cutter scribes in the X and Y directions, the glass cutter follows the moving direction like a "roller" of a caster.
As shown by, a cutter head 8 ′ including a cutter Z is provided from a hollow shaft R that is rotatable through an arm S,
When the cutter head 8 'is rotatable about the hollow shaft R as a center of rotation, and optical reading means is installed in the hollow portion of the shaft R, both the displacement amounts cx and cy can be made zero. .

First and second alignment marks M
The X-direction moving means for moving the cutter head in parallel to the direction connecting 1 and M2, if the work table is rotatable, according to the displacement amounts d and e, as shown in claim 5. Rotating the work table so that the direction connecting the first and second alignment marks is parallel to the direction connecting the two predetermined points O;
Further, if the work table is fixed and the cutter head can be moved in an arbitrary direction, the first and the second are set in accordance with the shift amounts d and e.
The cutter head is moved in parallel with the direction connecting the alignment marks.

In the above-described apparatus of the present invention, since the optical reading means is integrally attached to the cutter head, the cutter head is moved to a position to be scribed while watching the image from the optical reading means and scribed. It is most suitable for manual operation, and it is also convenient to perform a teaching mode in which the amount of movement when the cutter head is moved by the manual operation is stored in the apparatus main body as setting data.

The scribing method described in claim 8 of the present application provides a method in which cx and cy can be set to 0 in principle. In this case, the above-described initial setting operation is performed. It is no longer necessary and is completely confirmable if done. The scribe method according to claim 9 of the present application relates to the above-described initial setting operation,
By obtaining cx and cy in advance, the cutter blade edge can be positioned on the scribe line without error.

[0030]

FIG. 13 is an overall perspective view showing one embodiment of the apparatus according to the second invention. In FIG. 13, the same parts as those in FIG. 7 are denoted by the same reference numerals. In the present apparatus, as shown in FIG. 13, only one CCD camera 12 is fixed to the cursor 8 having the cutter head, and the CCD camera 12 moves integrally with the cutter head. The imaging center of the CCD camera 12 is
It is assumed that it is mounted at the same X coordinate position as the glass cutter position in the cutter head. That is, when the glass cutter scribes in the Y direction, the imaging center of the CCD camera 12 is located on the scribe line.

FIG. 14 is a control block diagram of the present apparatus. In FIG. 14, reference numeral 21 denotes a C that controls the entire apparatus.
A PU (Central Processing Unit) 22 is a ROM (Read Only Memory) that stores a control program and a test program (described below) for a control sequence performed by the CPU 21. Reference numeral 23 denotes a RAM (random access memory) which stores data of the alignment mark position and the scribe pitch set and input from the operation switch 14. Reference numeral 24 denotes an input unit of the operation switch 14 for the CPU 21.

The CCD camera 12 is of a two-dimensional image sensor of 256 × 256 dots. Reference numeral 25 denotes an image processing circuit for performing image processing on a two-dimensional image from the CCD camera 12, which will be described later in detail. 26,2
6 'is a driver for driving the X-axis motor Mx and the Y-axis motor My, respectively, and 27 and 27' are encoders for detecting the rotation amounts of the motors Mx and My, respectively. 28 is an output unit for the CPU 21;
The glass cutter 2 is controlled by a control signal from the output unit 21.
9 is raised and lowered at the time of scribing and moving. 30
Is a display for displaying a message.

The control operation of the present apparatus will be described below. First, as an initial setting, a test glass plate is set at a fixed position on the table 1 and a test scribe switch on the operation switch 14 is pressed.
By reading the test scribing program 22, a command to move the glass cutter 29 in the X direction is issued only to the driver 26, and a cut command of the cutter 29 is output to the output unit 28.

As a result, one scribe line is carved in the X direction on the glass plate by the glass cutter 29. Thereafter, in order to position the imaging center of the CCD camera 12 on the scribe line, the user operates the cursor movement switch on the operation switch 14 while watching the image of the CCD camera 12 displayed on the monitor display device 13. The CCD camera 12 is moved together with the cursor 8 in the Y direction. When the position determination switch on the operation switch 14 is pressed when the imaging center coincides with the scribe line, the movement amount of the CCD camera 12 at this time is changed in the Y direction between the cutting edge of the glass cutter and the imaging center of the CCD camera 12. Is stored in the RAM 23 as the shift amount cy.

Next, the glass plate to be processed is set on the table 1 and the automatic scribe switch on the operation switch 14 is pressed. Thereby, the glass cutter 29 is set based on the data of the coordinates (x ₁ , y ₁ ) of the first alignment mark M1.
Is moved to the coordinates (x ₁ , y ₁ -cy), whereby the CC moving integrally with the cursor 8 is moved.
Imaging center O of D camera 12 is moved to the coordinate (x _1, y _1). At this time, as described above, if the dimensions of the glass plate and the setting on the table 1 are correct, the CCD camera 12
Should exactly match the first alignment mark M1, but it is assumed that the imaging center O and the actual alignment mark M1 are now shifted as shown in FIG. Deviation between the alignment marks M1 and imaging center O (the coordinates on the glass plate and Po ₁₎ is determined by the image processing circuit 25.

That is, first, in order to know the actual X coordinate of the alignment mark M1, the signal read out from the pixel column in the row (horizontal) direction in FIG. Is determined. The alignment mark M1 is reflected, so that a bright signal is obtained from a pixel corresponding to the position. Although not Y ₁ to bright signal is Y ₉ rows of scan is detected in the scanning of the Y ₁₀ rows, dark becomes bright in X _80, next to light to dark in X _90,
At X ₁₀₀ , the color changes from dark to bright. Intermediate of X ₉₀ and X _100, is an X-coordinate XM1 ₁ at the position of _{(X 90 + X 100) /} 2 is the alignment mark M1. Similarly Y coordinate YM1 ₁ of the alignment mark M1 is determined by scanning the column (vertical) direction. A point C above (in the Y direction) above the imaging center O in FIG. 15 indicates the position of the glass cutter 29 on the table 1 separated from the imaging center O by cy.

The coordinates of the alignment mark M1 (XM1 _1, Y
M1 ₁₎ If is obtained, then the movement of the cursor 8 imaging center O of the CCD camera 12 and the second alignment mark M2
Is moved to the coordinates (x _2, y ₂₎ by (the coordinates on the glass plate imaging center O at this time is Po ₂₎ In this case similar to the above image processing, actual coordinates of the alignment mark M2 (XM2 _2, YM2 ₂₎ is required.

[0038] Then, at CPU 21, to the line connecting the two coordinate Po ₁ -Po _2, the coordinates (XM1 _1, YM1
_1), it is required (XM2 _2, YM2 ₂₎ wherein the line L ₁ connecting the. Assuming that a predetermined distance from the alignment mark to the first scribe line is G, if the cursor 8 is moved so that the glass cutter 29 traces on a line L ₂ separated by G from this line L ₁ , It is scribed on the first scribe line. Then is scribed parallel to the line L ₁ or L ₂ each time moving the scribe pitch Py one by the cursor 8 in the Y direction.

When the scribing in the X direction is completed, the glass cutter 29 is then turned 90 °, and every time the cursor 8 moves by the scribing pitch Px in the X direction, the scribing is performed in a direction orthogonal to the line L ₁ or L _2. Is done.

Thereafter, even if the type of the glass plate to be processed changes and the position of the alignment mark also changes, it is only necessary to input the position of the alignment mark of the glass plate and the scribe pitches Px and Py. (Test scribe) is not required. That is, when different kinds of glass plates are set, the above-mentioned paragraph number [0035]
Control can be started from

The above embodiment is an example in which the displacement cx in the X direction between the cutting edge of the glass cutter and the imaging center is 0, but cx, the displacement in the Y direction between the cutting edge of the glass cutter and the imaging center. If both cy are not 0, at least one of cx and cy is 0, and both cx and cy are 0
In the case of, the operation is performed as described in the above-mentioned operation section.

By the way, the alignment marks written on the glass plate are usually two points parallel to the glass end face. However, recently, due to problems in the manufacturing process or electronic circuit design, alignment marks are specified at two unspecified points. Marks may be added.

For example, as shown by a glass plate Z in FIG. 16, the second mark is located at a position different from the alignment mark M2.
In the case where the alignment mark M2 (coordinates (x ₂ , y ₂ ) is provided, the alignment marks M1 ′ and M2 ′ of the set glass plate Z ′ to be processed are displaced from the alignment marks M1 and M2. Also in this case, the imaging center O is set to the coordinate data (x ₁ , y ₁ ) of the first alignment mark M1.
To the imaging center O and the first alignment mark M
1 ′, and the imaging center O is moved to the coordinate data (x ₂ , y ₂ ) of the second alignment mark M2,
The amount of displacement between the imaging center O and the second alignment mark M2 'is obtained, the actual coordinates of these alignment marks M1' and M2 'are obtained, and a virtual line Lx from the first alignment mark M1' in the X direction is obtained. , And the intersection of the two lines when the line Ly ′ is virtually drawn in the Y direction from the second alignment mark M2 ′ is obtained, and the coordinates of this intersection are used as the actual coordinates of the second alignment mark M2 in FIG. If it is a position, the following can be processed in the same manner as in the above-described embodiment.

Next, the case of manual scribing by the present apparatus will be described. In this case, the paragraph number [003
3] and [0034] This operation can be omitted once the initial setting (detection of the deviation a between the cutting edge of the glass cutter and the imaging center of the CCD camera) described in [0034] is performed. Set the processed glass plate and operate the cursor movement switch on the operation switch 14 to set the CC
The imaging center O of the D camera 12 is moved to a position where the scribe is desired. Thereafter, when the manual scribe switch on the operation switch 14 is pressed, the cursor 8 moves in the Y direction by the shift amount a, so that the cutting edge of the glass cutter 29 is located on the scribe point. The scribe is started in the direction, and thereafter the scribe is performed in the X direction each time the scribe pitch Py moves in the Y direction. The same can be done for scribes in the Y direction.

As described above, according to the present apparatus, the movement of the cutter head can be performed while watching the image from the CCD camera, and the deviation between the blade edge of the cutter head and the imaging center of the CCD camera is determined in advance. Since the movement of the cutter head can be replaced by the movement of the CCD camera by grasping the position of the CCD camera, the movement of the cutter head is particularly suitable for the scribing operation by manual operation. It is also convenient to perform a teaching mode in which the apparatus is moved over M1 and M2 and the amount of movement of the CCD camera 12 at that time is stored in the apparatus body as position data of the alignment mark.

In the above embodiment, the apparatus for moving the cutter head in any direction with respect to the glass plate on the fixed table
(FIG. 7), the present invention is applied, but the rotatable table is Y
Device that moves in the X direction and the cutter head moves in the X direction
One CCD camera must be directly connected to the cutter head (Figs. 1 and 2) and also to a device in which the cutter head moves in the X and Y directions with respect to the rotatable table (Figs. 5 and 6). The present invention can be applied.

That is, in the apparatus shown in FIGS. 1 and 2, the initialization (paragraph numbers [0033] and [0034]) described in the present embodiment is performed once instead of the processing of the paragraph number [0003]. Even if the type of the glass plate changes, the paragraph number [0
004], and the initial setting is not necessary again. Also, in the apparatus shown in FIGS. 5 and 6, the initial setting can be omitted similarly.

[0048]

As described above, according to the present invention, a CCD camera is provided integrally with a cutter head, and a shift between a cutter head and a camera, for example, an imaging center is determined in advance as an initial setting. The cutter head is moved according to the coordinate data of the two alignment marks on the glass plate, and the actual coordinates of each alignment mark are obtained by optically reading the deviation between each alignment mark and the imaging center of the camera. Is scribed in parallel with the line connecting the actual coordinates of the two points. With this method, even if the position of the alignment mark written on the glass plate to be processed is different, the CCD camera can be easily moved to the position of the alignment mark according to the coordinate data of the alignment mark. Can be easily dealt with. Also, since the cutter head can be moved based on the imaging information of the CCD camera, the positioning is easy, so that the scribing by manual operation is also easy, and the teaching mode for storing the moving amount of the cutter head as setting data is also easy. I can do it.

[Brief description of the drawings]

FIG. 1 is a side view of a glass scriber in which a rotatable table moves in a Y direction and a cutter head moves in an X direction.

FIG. 2 is a front view of the apparatus of FIG.

FIG. 3 is a diagram showing an example of imaging by two CCD cameras in FIG. 1;

FIG. 4 is a view showing an alignment operation in the apparatus of FIG. 1;

FIG. 5 is a side view of a glass scriber in which a cutter head moves in X and Y directions with respect to a rotatable table.

FIG. 6 is a front view of the apparatus of FIG. 5;

FIG. 7 is a perspective view of a glass scriber in which a cutter head is movable in an arbitrary direction with respect to a fixed table.

FIG. 8 is a view showing an alignment operation for a dummy glass in the apparatus of FIG. 7;

FIG. 9 is a view showing an alignment operation for a glass plate to be processed in the apparatus of FIG. 7;

FIG. 10 is an explanatory plan view when cx and cy are not 0;

FIG. 11 is an explanatory plan view when cy = 0.

FIG. 12 is an explanatory plan view when cx and cy are both 0;

FIG. 13 is a perspective view showing one embodiment of a fixed table type glass scriber.

14 is a control block diagram of the apparatus of FIG.

FIG. 15 is a view used to explain the detection of the position of an alignment mark in the apparatus of FIG. 13;

FIG. 16 is a view showing a scribe operation for a glass plate in which an alignment mark is written at an unspecified point in the apparatus shown in FIG. 13;

[Explanation of symbols]

 1 Table 2 Reference Pin 3 Bridge 4 Rail 5 Female Screw 6 Ball Screw 7 Rail 8 Cursor 9 Ball Screw 12 CCD Camera 13 Monitor Display 14 Operation Switch 21 CPU 22 ROM 23 RAM 24 Input Unit 25 Image Processing Circuit 26 Driver 27 Encoder 28 Output Part 29 Glass cutter 30 Message display Mx X-axis motor My Y-axis motor

Claims (10)

(57) [Claims] 1. A cutter head to which a glass cutter blade is attached, a table on which a glass to be processed is mounted, and scribe means for moving the cutter head in two orthogonal directions X and Y to scribe the glass to be processed. Storage means for storing various coordinate data, and first and second two alignment marks M written on a glass plate to be processed.
Optical reading means for reading M1 and M2; image processing means for detecting the coordinate positions of the M1 and M2 by processing signals from the optical reading means; and arithmetic means for calculating data of the coordinate positions A glass scriber for scribing the glass plate at a predetermined pitch based on the coordinate position; a) the optical reading means is one; and b) the optical reading means is the cutter. C) the scribing means moves the optical reading means integrally with the cutter head; d) the image processing means comprises an imaging area of the optical reading means. the alignment mark at a predetermined point O ₁ of the inner M1, M2 sequentially match with the alignment mark M1 by the image processing, the coordinate values of M2 _{x 1, y 1), (} x 2,
y ₂ ) is determined sequentially. 2. A cutter head on which a glass cutter blade is mounted, a table on which a glass to be processed is mounted, and scribe means for moving the cutter head in two orthogonal directions X and Y to scribe the glass to be processed. Storage means for storing various coordinate data, and first and second two alignment marks M written on the glass plate to be processed.
Optical reading means for reading M1 and M2; image processing means for detecting the coordinate positions of the M1 and M2 by processing signals from the optical reading means; and arithmetic means for calculating data of the coordinate positions A glass scriber for scribing a glass plate to be processed at a predetermined pitch based on the coordinate position; a) the optical reading means is one; b) the optical reading means is C) the scribing means moves the optical reading means integrally with the cutter head; d) the image processing means: a) on the glass to be processed. When the intersection of two straight lines that are orthogonal to each other and pass through the alignment marks M1 and M2, respectively, is taken as a third alignment mark M2 ′, b) the optical alignment Alignment marks M1 by the alignment marks M1, M2 'sequentially match the image processing on a predetermined point O ₁ of the image pickup area of the reading means, M
Determining a coordinate value (x ₁ , y ₁ ) and (x _{2 ′} , y _{2 ′} ) of _{2 ′} ; 3. The glass scriber according to claim 1, wherein the cutter blade and the optical reading means are mounted apart from each other by cx and cy in the X and Y directions, respectively. 4. The glass scriber according to claim 3, wherein at least one of cx and cy is zero. 5. The glass scriber according to claim 1, further comprising rotating means for rotating said table. 6. The glass scriber according to claim 1, wherein the table is a fixed table. 7. A glass scriber according to claim 1, wherein said cutter blade is pivotally supported around a central axis of said optical reading means. 8. A cutter head to which a glass cutter blade is attached, a table on which glass to be processed is mounted, and scribe means for moving the cutter head in two orthogonal directions X and Y to scribe the glass to be processed. Storage means for storing various coordinate data, and first and second two alignment marks M written on the glass plate to be processed.
Optical reading means for reading M1 and M2; image processing means for detecting the coordinate positions of the M1 and M2 by processing signals from the optical reading means; and arithmetic means for calculating data of the coordinate positions A glass scriber for scribing a glass plate to be processed at a predetermined pitch based on the coordinate position; a) the optical reading means is one; b) the optical reading means is The cutting edge is integrally mounted on a cutter head, and the cutter blade is pivotally supported around a central axis of the optical reading means; c) the scribe means integrates the optical reading means with the cutter head; it is moved manner; d) said image processing means, the alignment mark at a predetermined point O ₁ of the image pickup area of the optical reading means 1, the alignment marks M1, the coordinate values of M2 by M2 sequentially match the image processing _{(x 1, y 1),} (x 2,
y ₂ ), respectively. 9. A cutter head on which a glass cutter blade is mounted, a table on which glass to be processed is mounted, and scribe means for moving the cutter head in two orthogonal directions X and Y to scribe the glass to be processed. Storage means for storing various coordinate data, and first and second two alignment marks M written on a glass plate to be processed.
An optical reading means for reading the marks M1, M2, and processing signals from the optical reading means to obtain the marks M1, M2.
An image processing means for detecting a coordinate position of M2, and a calculating means for calculating data of the coordinate position, wherein a glass scriber scribes at a predetermined pitch based on the coordinate position, wherein the scribe means is a cutter Moving the head and one of the optical reading means integrally; a) moving the cutter blade in the X and Y directions to obtain a predetermined point O ₁ in the imaging area of the optical reading means; Distance c in X direction and Y direction with cutter edge
x, and pre Ji because detecting cy cx, it registers the cy in the storage means; b) with each match the point O ₁ to the alignment marks M1, M2 on the processed glass, the alignment marks M1, M2 Reading the coordinate values (x ₁ , y ₁ ), (x ₂ , y ₂ ); c) the calculating means calculates the coordinate values (x ₁ , y ₁ ), (x ₂ , determining a scribe line based on y ₂ ). 10. The apparatus according to claim 9, wherein cx = cy = 0 by supporting said cutter blade tip so as to be able to change its direction around a central axis of said optical reading means. Scribe method.