JP2009073714A - Glass substrate cutting device - Google Patents

Abstract

An accurate cutting line inserted by a cutter is ensured.
SOLUTION: A plurality of sliders provided on a guide rail 22 traversing just above a traveling path of a table 3 with a turning means 2 for holding a glass substrate so that each of the sliders slides in a horizontal direction by a lateral movement means, A cutter provided so as to be moved up and down by an elevating means 24 and a camera 31 mounted on each slider so as to read each scribe position mark a and alignment mark of the glass substrate, and accompanying the reading of the alignment mark by the camera. The table is swung by means of swiveling means for the amount of machining deviation, and the amount of deviation in scribing associated with the reading of the scribe mark by the camera and the short trial cutting line by the cutter is linked to move the slider to the correction position by means of lateral movement. Let
[Selection] Figure 1

Description

  The present invention relates to a cutting apparatus for simultaneously putting a large number of cutting lines for product size on a glass substrate such as a large liquid crystal panel.

  Productivity can be increased by simultaneously obtaining a large number of product size substrates from a large liquid crystal panel glass substrate at the same time.

  In order to achieve the above object, after placing a large glass substrate on a reciprocating table, a plurality of cutters arranged at predetermined intervals on the right and left just above the table traveling path while the table is traveling As a result of the lowering, a plurality of parallel cutting lines for parallel splits are put on the surface (upper surface) of the glass substrate at once. This split cutting line is inserted only in the X-axis direction or in the X-axis direction and the Y-axis direction.

The intervals between the parallel cutters can be adjusted by numerical control so as to meet the product size (see, for example, Patent Document 1).
JP-A-11-343133

  According to the cutting method of the plate glass of the said patent document 1, productivity can be improved by putting the cutting line which simultaneously obtains the board | substrate of many product sizes at once from a large-sized glass substrate.

  By the way, in the cutting method of Patent Document 1, in the initial stage, trial cutting (putting a cutting line) is performed on the mother substrate, and it is confirmed whether or not each cutting line that has been trial-cut is at a scribe position. If not at the scribe position, adjust the cutter position. Further, the position of the cutter is adjusted by sequentially supplying glass substrates and inserting cutting lines.

  However, when trial cutting is performed, a large-sized and expensive mother board is used, which causes a problem of unnecessary use and unnecessary expense.

  In addition, since trial cutting is performed each time the cutting line is changed, there is a problem that the operating rate of the machine is remarkably lowered due to the scribe position confirmation work and the like in addition to a large expense.

  Then, this invention is providing the cutting device of the glass substrate which eliminated the above-mentioned problem.

  In order to solve the above-described problems, the present invention is configured so that a traveling body provided so as to reciprocate, and a swiveling means on the traveling body are swung on a plane and a large glass substrate placed thereon is held. A plurality of sliders provided on the guide rail that crosses directly above the travel path of the table so that each of the sliders slides to the left and right by the lateral movement means, and the sliders are provided to be raised and lowered by the lifting means. And a camera mounted on each of the sliders so as to read each scribe position mark and alignment mark on the glass substrate. Also, along with the reading of the scribe mark by the camera and the short trial cut line with the above cutter By the lateral moving means starts selling scribing shift amount to employ a configuration in which in conjunction to move the slider to the correction position. Then, a cut can be made on the line at the set position.

  As described above, according to the glass substrate cutting device of the present invention, the amount of processing deviation relative to the left and right edges of the glass substrate when the alignment mark is read by the camera is corrected by turning the table by the turning means. The short trial cut line and the scribe mark placed on the glass substrate are read by the camera by moving the table slightly, and the amount of deviation from the trial cut line with respect to the scribe mark due to the reading is determined by the horizontal movement means. Alternatively, the correction is performed by sliding in the right direction, so that trial cutting using the mother board is not necessary.

  For this reason, it is possible to eliminate the wasteful expense due to the use of a large and expensive mother board, and the problem is that the significant operating rate of the machine generated for trial cutting and subsequent confirmation of the scribe position decreases. Can be lost.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  In the embodiment of the present invention, as shown in FIGS. 1 to 6, on the traveling body 1 that reciprocates, a table that holds a large glass substrate A that is placed on the plane by the turning means 2 while being turned on a plane. 3 is provided.

  In the case of the reciprocating travel of the traveling body 1, in the illustrated case, the sliders 5 provided on the lower surfaces on both sides of the traveling body 1 are slidably engaged with the laid two rails 4, and the both ends are disposed between the rails 4. The female screw 7 attached to the lower surface of the traveling body 1 is screwed into the male screw 6 that is pivotally supported, and the male screw 6 is reversibly driven by the operation of the first motor 8 so that the traveling body 1 travels in the front-rear direction. However, the present invention is not limited, and the vehicle may travel in the front-rear direction using other configurations.

  In the illustrated case, the revolving means 2 has a reversible motor installed on the traveling body 1 and the output shaft of the reversible motor is fixed to the center of the lower surface of the table 3, but is not limited thereto.

  The glass substrate A placed on the table 3 is held by sucking the inside of the box using the table 3 as a box, and providing a number of small communication holes 35 on the top wall of the box, and holding them by suction.

  At that time, the edge of the glass substrate A is brought into contact with the two pins 9 sandwiching one corner on the table 3 so as to be positioned.

  Further, guide rails 22 are provided between both ends of the horizontal member 21 that crosses the travel path of the table 3, and a plurality of sliders 23 are slidably engaged with the guide rails 22, and each slider 23 has a cylinder or the like. A cutter 25 that moves up and down by the lifting means 24 is provided.

  Each slider 23 can be independently moved in the left-right direction by the lateral movement means 26.

  In the illustrated case, the lateral movement means 26 lays a rack 27 over substantially the entire length of the horizontal member 21 and bites a pinion 30 fixed to the output shaft of the second motor 29 installed on the base 28 of each slider 23. In addition, the slider 23 is slid leftward and rightward by the reversible operation of the second motor 29.

  In the vicinity of each cutter 25, a camera 31 installed on the base 28 is provided.

The camera 31 is provided on the upper surface of the glass substrate A by reading the alignment mark a by moving the sliders 23 on both sides to the positions of the alignment marks a on both sides of the upper surface of the glass substrate A by the lateral movement means 26. A short test cut line C placed on the upper surface of the edge of the glass substrate A is read by the scribe mark B and each cutter 25.
In the figure, reference numeral 41 denotes guide means for guiding the raising and lowering of the cutter 25.

  If comprised as mentioned above, the glass substrate A of a liquid crystal panel is mounted on the table 3, the traveling body 1 is reciprocated, the square alignment mark B of the glass substrate A is read with the camera 31, and the process accompanying reading is carried out. The amount of deviation is calculated by an arithmetic unit connected to the camera 31, and the turning means 2 is operated by the control device based on the calculation to turn the table 3 clockwise and counterclockwise at an angle corresponding to the correction amount. .

  In addition, the holding glass substrate A is first moved slightly forward together with the table 3 before a cutting line is made by the cutter 25 between the edges of the two sides facing the glass substrate A (scribing).

  At this time, each cutter 25 is lowered by the elevating means 24 and is in front of each scribe mark B printed on the surface of the edge portion required of the glass substrate A shown in FIG. 4 (disengaged from the scribe mark B). A short trial cut line C shown in FIG. 5 and FIG. 6 is put in the part, and after the trial cut line C is put, each cutter 25 is raised and returned by the lifting means 24.

  At this time, each camera 31 reads the scribe mark B and the trial cut line C, and whether the trial cut line C associated with the reading is at a normal position (shown in FIG. 5) where the scribe mark B is set, as shown in FIG. The slider 23 of the cutter 25 is corrected to the amount of deviation by the lateral movement means 26 (by the operation of the second motor 29) at the irregular position accompanying the detection. Slightly move (correct) the position.

  In the above correction method, the amount of deviation is calculated by an arithmetic device connected to the camera 31, and the second motor 29 is rotated forward and backward by the control device based on the calculation.

  Thus, while the traveling body 1 is traveling forward, a cutting line is made by the cutter 25 that is lowered by the elevating means 24 on the glass substrate A on the table 3.

  In addition, the cutting line can be inserted one or more times between the previous cutting lines through the same procedure, and the glass substrate A held with the table 3 is turned by 90 ° to cut at a right angle. You can put a line.

  As is well known, the lowering amount of the cutter 25, that is, the scribe depth is determined according to the thickness (plate thickness) of the glass substrate A.

  Further, the cutter 25 moves with respect to the alignment mark a in the defensive range by the set mm with reference to the alignment mark a, stores the deviation amount + mm at that time, and then moves to the position of the scribe mark B on the second line. Each deviation amount of deviation amount −mm and third line deviation amount + mm is sent to the arithmetic unit to calculate a correction value so that the scribe mark B center value can be positioned.

  That is, when the position of each scribe mark B is read with the above movement value and deviation amount, the correction value for the error is entered, and then the cutter 25 is moved, the center of the camera 31 is aligned with the center of the scribe mark B.

  Based on this idea, the movement value of each cutter 25 is read and corrected by the above method, whereby all the positions of the respective cutters 25 can be positioned at the position of the scribe mark B reference value.

  Thereafter, the cutter 25 is moved again to the position of the scribe mark B, and a scribe line is inserted into a portion of the glass substrate A at that position.

  Note that it may be confirmed whether the above conditions are satisfied and each cutter 25 is actually scribed after the first scribe is completed.

The top view which shows embodiment of this invention. Side view same as above. The longitudinal cross-section enlarged side view which shows the principal part. The top view of a glass substrate. The enlarged plan view which shows the relationship between a trial cut line and a scribe mark. The enlarged plan view which shows the relationship between a trial cut line and a scribe mark.

Explanation of symbols

A glass substrate a alignment mark B scribe mark C trial cutting line 1 traveling body 2 turning means 3 table 4 rail 5 slider 6 male screw 7 female screw 8 first motor 9 pin 21 horizontal member 22 rail 23 slider 24 lifting means 25 cutter 26 horizontal Moving means 27 Rack 28 Base 29 Second motor 30 Pinion 31 Camera

Claims (1)

  A traveling body provided so as to reciprocate, a table provided on the traveling body so as to turn on a plane by a turning means and to hold a large glass substrate placed thereon, and directly above the traveling path of the table A plurality of sliders provided on the guide rail that crosses each side by means of lateral movement means, a cutter provided on each of the sliders to be raised and lowered by the raising and lowering means, and each slider on each of the glass substrates. It consists of a camera mounted so as to read the scribe position mark and alignment mark, and the table is swung by the turning means for the amount of processing deviation accompanying the reading of the alignment mark by the camera, and a short trial cut with the scribe mark by the camera and the cutter The amount of misalignment in scribing due to line reading is Cutting apparatus for a glass substrate, characterized in that in conjunction to move the slider to the correction position.

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