JP2007038327A - Chamfering device for glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To measure a polishing part without any influence of scattering grinding water. <P>SOLUTION: This chamfering device includes: a holding table 11 for a supply sheet glass, which is provided on a traveling body 1 traveling in the longitudinal direction to revolve; rotary grinding wheels 31, 32 for chamfering, which are provided on both outside areas of a traveling path of the table to adjust the opposite interval and adjust the vertical position; and first vertical cameras P1, P2 located on this side of the rotary grinding wheel to measure both side edges of the sheet glass from above and second horizontal cameras P3, P4 provided to measure both side surfaces of the sheet glass from the side on both sides of the traveling path of the table, wherein the machining distortion is read by the first vertical cameras and corrected by operating the revolving driving device to revolve the table, and a difference in chamfering amount caused by reading of the first vertical cameras and second horizontal cameras is corrected by the movement of the rotary grinding wheel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for chamfering the edge of a plate glass.

  While the conveyance table on which the plate glass is placed is run, the edge of the plate glass in the middle of conveyance is chamfered with a rotating grindstone.

Therefore, an inner first camera with a downward irradiation first light source and an outer second camera with a downward irradiation second light source, which are provided on the front left and right of the travel path of the table so as to be adjustable in a direction crossing the travel path, A mirror provided to reflect the second light source on the lower surface of the edge of the plate glass, and an upper surface of the plate glass provided in front of the first cameras so as to be movable and adjustable in a direction crossing the traveling path of the traveling body. The upper rotating grindstone for chamfering and the lower rotating grindstone for chamfering the lower surface, and the amount of misalignment of chamfering processing accompanying the reading of the camera is determined by turning the table by the operation of the swivel driving device and the upper and lower rotating grindstones. The upper and lower surfaces of the plate glass are accurately processed in conjunction with the movement to the correction position (Patent Document 1).
JP 2004-99424 A

  By the way, according to the method of Patent Document 1, since a camera and a mirror are provided side by side, a measurement error occurs due to dirt or adhering water droplets on the mirror as the grinding water used for polishing is scattered.

  Then, it becomes a cause of generation | occurrence | production of polishing defect.

  In addition, it is possible to measure the upper and lower surfaces of the single plate, the upper surface of the reverse plate, and the corner cut part (measurement), but there is a problem in the measurement (measurement) of the processing width (polishing width) of the reverse plate. .

  Furthermore, the target polishing cannot be achieved due to the accuracy of the processing stage (table), that is, the deviation of the horizontality associated with the installation, the relationship between the stage upper surface and the rotating grindstone shaft, the elongation due to thermal expansion, and the like.

  Therefore, the present invention is to perform chamfering that solves the above problems.

  In order to solve the above-mentioned problems, the present invention provides a traveling body that is guided in the forward direction by the guide means and that travels by the advancing and retreating traveling means, and the turning support shaft is perpendicular to the traveling body. For holding chamfers of the upper and lower surfaces of the plate glass provided so as to be capable of adjusting the opposing distance and adjusting the vertical position on both outer sides of the travel path of the table, and to provide a holding table for the supply plate glass provided so as to turn through a turning drive device. Measured from both sides of the rotating grindstone and the vertical first camera provided on both sides of the travel path of the table and in front of the rotating grindstone so as to measure both side edges of the plate glass from above. And a horizontal second camera provided so as to be read by the vertical first camera and corrected by turning the table by operating the turning drive device. It is dynamic, to adopt a configuration in which the deviation of the chamfering amount associated with the reading of the vertical first camera and a horizontal second camera in conjunction so as to correct the movement of the rotary grindstone.

  Then, reading the upper surface mark of the plate glass with the vertical first camera, measuring the chamfering amount, outer diameter and corner cut of the upper surface of the plate glass, and the accuracy (height, height, (Parallelism), the relationship between the table upper surface and the rotating grindstone axis, the elongation due to thermal expansion, and the grinding amount of the end face of the glass sheet.

  As described above, according to the glass chamfering apparatus of the present invention, the upper surface reference mark of the plate glass is read by the upper vertical first camera, and the deviation amount of the edge of the plate glass in the traveling direction is calculated with respect to the traveling direction. The correction is performed by the operation of the turning drive device, and the chamfering amount, outer diameter, and corner cut of the upper surface of the plate glass are measured, and the horizontality due to processing errors due to the installation of the table by the lower horizontal second camera. Measures the relationship between the table top surface and the axis of the rotating wheel and the expansion due to thermal expansion, and measures the grinding amount of the end surface (edge surface) of the plate glass. A correction is made so that the set chamfer width is set accordingly.

  For this reason, it is possible to accurately and efficiently carry out the upper and lower surface removing operations of the plate glass and eliminate the occurrence of defective products due to processing.

  In particular, it is not necessary to use a conventional mirror due to the measurement performed by the vertical first camera and the horizontal second camera.

  For this reason, there is no measurement error caused by dirt on the mirror or adhesion of water droplets due to grinding water.

  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, reference numeral 1 denotes a traveling body that is guided in the front-rear direction by the guide means 2 and is advanced and retracted by the advance / retreat traveling means 3.

  The guide means 2 is composed of two guide rails 4 on the left and right sides and a slider 5 provided on the lower surface of the traveling body 1 and engaged with the guide rail 4 in the figure. In this case, a male screw 7 which is supported at a fixed position along the guide rail 4 and reversibly rotates by a reversible operation of the first motor 6, and a female screw 8 which is attached to the lower surface of the traveling body 1 and is screwed into the male screw 7, However, the vehicle may be guided in the front-rear direction by other means to advance and retreat.

  Further, on the traveling body 1, there is provided a holding table 11 for a plate glass A for turning a vertical turning shaft 9 by turning driving means 10.

  As the turning drive means 10, the turning shaft 9 is reversibly driven through a gear meshed by a motor, and the holding table 11 is a box that sucks the inside, and an infinite number of small holes 13 are provided on the top wall of the box, The plate glass A is sucked and held on the holding table 11.

  Note that a stopper (not shown) is provided on the holding table 11 for contact with two edges that sandwich one corner of the glass sheet A (not shown).

Further, on the front left and right of the travel path of the table 11, a pair of first vertical cameras P ₁ and P ₂ capable of measuring the edge of the plate glass A in the travel direction from above and adjusting the position in the left and right direction are provided. is there.

In the illustrated case, the position adjustment of the first cameras P ₁ and P ₂ is performed by providing a frame 14 that crosses the traveling path of the traveling body 1, and the left and right guide rails 15 provided on the entire length of the frame 14. A male having a slider 16 of the base 17 slidably engaged, and provided with a right-handed screw from the middle to one end and a left-handed screw from the middle to the other end, which is supported to rotate at a fixed position along the entire length of the frame 14 one of the female screw 19 respectively are held in both the left and right base 17 to the right thread of the male screw 18 to the screw 18, screwed to the other of the female screw 19 to the left screw of the male screw 18, the first camera P ₁ to the bases 17 , P ₂ is installed.

Then, the male motor 18 is reversibly driven by the second motor 20 to move the first cameras P ₁ and P ₂ together with the base 17 in the approaching and separating directions, and the position is set according to the dimension between both side edges of the plate glass A. Although the adjustment is made, the position can also be adjusted by, for example, a rack and a pinion with a drive function.

Further, in the vicinity of the first cameras P ₁ and P ₂ , horizontal second cameras P ₃ and P ₄ for measuring the edge of the plate glass A in the traveling direction from the side are provided.

Second camera P _3, P ₄ of the above are also available adjust the facing distance in accordance with a dimension between both side edges of the glass sheet A.

For example, as shown in FIG. 3, it is attached to both bases 17 and 17 so as to move together with the first cameras P ₁ and P ₂ .

As shown in FIGS. 1 and 3, the slider 23 of the plate 22 is slidably engaged with the longitudinal guide rail 21 of the frame 51 attached to both the bases 17 and 17 and is mounted on the frame 20. The second camera P ₃ , P ₄ is installed in the plate 22 by screwing the female screw 26 supported by the plate 22 into the male screw 25 that rotates forward and backward in a fixed position by the reversible operation of the three motor 24, and installs the second cameras P ₃ and P ₄ on the plate 22. The cameras P ₃ and P ₄ can be adjusted up and down independently.

  If the level of the table 11 on which the plate glass A placed on the table 11 travels is not accurate, for example, the one side of the plate glass A in the traveling direction is high and the other side is low.

Therefore, the second cameras P ₃ and P ₄ on both sides are raised and lowered according to the plate thickness and adjusted so as not to hinder the measurement.

Further, in front of the first cameras P ₁ and P ₂ , the upper rotating grindstone 31 that chamfers the upper surface (upper corner) of both edges along the traveling direction of the glass sheet A and the lower surface (lower corner) of both edges are chamfered. A lower rotating grindstone 32 is provided.

The pair of left and right upper rotating grindstones 31 and 31 and the lower rotating magnets 32 and 32 are close to adjust the facing distance according to the widths of both side edges of the glass sheet A as measured by the first cameras P ₁ and P ₂ . Ascending / descending and moving up and down to the optimum polishing position depending on the thickness of the plate glass A, for example, with the measurement of the second cameras P ₃ and P ₄ , and one side on both sides with the tilt of the plate glass A descend In order to achieve the above object, for example, as shown in FIGS. 1, 2 and 4 to 6, a frame 33 that crosses the upper side of the traveling path of the traveling body 1 is achieved. A slider 36 provided on the back of each of the left and right first bases 35 is slidably engaged with a horizontal guide rail 34 provided on the entire length of the frame 33, and A male screw 38 that is pivotably supported at both ends and is reversibly driven by a fourth motor 37 is provided between the end of the frame 33 and the middle of the frame 33, and the female screw 38 is attached to each of the bases 35, 35. The first bases 35 and 35 are moved toward and away from each other by reversible driving of the third motor 37, and the first guides 40 are provided on the vertical guide rails 40 provided on the surfaces of the first bases 35 and 35. The slider 42 provided on the back surface of the two bases 41 and 41 is slidably engaged, and both ends of the male screw 43 are rotatably supported by the first base 35, and the first base is attached to one end of the male screw 43. A fifth motor 44 installed on the second base 35 is connected to the second base 35 by screwing a female screw 45 attached to the second base 35 into the male screw 43. The upper and lower positions of the upper rotating grindstone 31 and the lower rotating grindstone 32 that are driven by the motor 46 installed on the second bases 41 and 41 are adjusted.

Of course, the vertical adjustments of the second cameras P ₃ and P _{4, the} upper rotary grindstone 31, and the lower rotary grindstone 32 are performed separately, but they may be moved up and down integrally.

  If comprised as mentioned above, after supplying the plate glass A on the table 11, the male screw 7 will be driven by the normal rotation driving | operation of the 1st motor 6. FIG.

  Then, the table 11 is caused to travel forward together with the traveling body 1 having the female screw 8 screwed into the male screw 7.

As the table 11 travels, the first cameras P ₁ and P ₂ read the reference marks a and a on the plate glass A.

At this time, when the centers of the marks a and a and the centers of the first cameras P ₁ and P ₂ do not coincide with each other, the first camera P ₁ and P ₂ are moved closer to and away from the base 17 by the operation of the second motor 20. The correction is performed by rotating the plate glass A together with the table 11 in the clockwise or counterclockwise direction by the operation of the rotation driving means 10.

Of course, the correction (correction) to the correction positions of the upper rotating grindstone 31 and the lower rotating grindstone 32 in accordance with the measurement by the first cameras P ₁ and P ₂ is moved toward and away from the reversible operation of the fourth motor 20. To do.

  Thus, chamfering X and Y of the upper surface of the two edges along the traveling direction of the plate glass A is performed with the upper rotating grindstone 31 and the lower rotating grindstone 32 while the table 11 is traveling.

  After the chamfering X and Y processing, the table 11 is caused to travel backward (original position, that is, the supply point of the glass sheet A) by the reverse rotation operation of the first motor 6.

At this time, the widths of the processing chamfers X and Y are read by the first cameras P ₁ and P ₂ and the second cameras P ₃ and P ₄ .

When the read chamfer X, Y width (relationship between W ₁ , W _2, and t as shown in FIG. 8) is not accurate (for example, flat glass due to a deviation in horizontality (error) associated with the installation of the traveling body 1) And the relationship between the upper surface of the table 11 and the grindstone axis, the influence of elongation due to thermal expansion, etc.), and correction of the polishing width with respect to the read value is performed by reversible operation of the fourth motor 44. Correction is performed by raising or lowering the upper rotating grindstone 31 and the lower rotating grindstone 32 together with the second base 41 while driving the screw 43 forward and backward.

Note that the above correction is performed by an arithmetic unit connected to the first cameras P ₁ and P ₂ and the second cameras P ₃ and P _{4 if the} width dimension is not accurate as the chamfers X and Y are read. The amount of polishing width deviation (polishing angle is also calculated), and based on the calculation, the positions of the upper rotating grindstone 31 and the lower rotating grindstone 32 are corrected by the control device.

In addition, the turning correction of the table 11 is also performed by the measurement of the first cameras P ₁ and P ₂ (by the above correction).

  Of course, chamfering of the remaining two sides of the plate glass A is also performed according to the above-described procedure (measurement and correction).

  The upper rotating grindstone 31 and the lower rotating grindstone 32 are used by selecting a cup, a multi, a cylinder, or the like.

  Then, as shown in FIG. 1, each corner of the plate glass A is polished by a polishing grindstone 81, 81 having corners with adjustable left and right facing intervals by a well-known method.

  In the figure, reference numeral 82 denotes a facing distance adjusting means for the polishing rotating grindstones 81, 81, 83 a front-rear moving means for the polishing rotating grindstones 81, 81, and 84 a guide shaft for guiding the female screw 45 in a non-rotating state.

The top view which shows embodiment of this invention Side view Longitudinal enlarged rear view showing the first and second cameras Partially cutaway rear view showing upper and lower rotating wheels Same part notch rear view Front view showing relationship between camera and glass plate Plane view of plate glass Enlarged front view showing measurement of plate glass

Explanation of symbols

A plate glass P ₁ , P ₂ first camera P ₃ , P ₄ second camera 1 traveling body 2 guide means 3 advance / retreat traveling means 4 guide rail 5 slider 6 first motor 7 male screw 8 female screw 9 swivel shaft 10 swivel drive means 11 Table 14 Frame 15 Guide rail 16 Slider 17 Base 18 Male screw 19 Female screw 20 Second motor 21 Guide rail 22 Plate 23 Slider 24 Third motor 25 Male screw 26 Female screw 31 Upper rotating grindstone 32 Lower rotating grindstone 33 Frame 34 Guide rail 35 First base 36 Slider 37 Fourth motor 38 Male screw 39 Female screw 40 Guide rail 41 Second base 42 Slider 43 Male screw 44 Fifth motor 45 Female screw 46 Motor

Claims (1)

A traveling plate guided in the forward direction by the guide means and provided to travel by the advancing and retreating traveling means, and a supply plate glass provided to turn via a turning drive device on which the turning support shaft is vertical. Holding tables, rotating grindstones for chamfering the upper and lower surfaces of the plate glass provided on both outer sides of the travel path of the table so as to be able to adjust the opposing distance and the vertical position, on both sides of the travel path of the table, and A vertical first camera provided in front of the rotating whetstone to measure both side edges of the plate glass from above and a horizontal second camera provided to measure both side surfaces of the plate glass from the side. The amount of processing deviation is read by the vertical first camera and is interlocked so as to be corrected by the turning of the table by the operation of the turning drive device, and the vertical first camera and the horizontal Glass chamfering apparatus, wherein a chamfering amount of deviation due to the reading of the second camera was linked to correct the movement of the rotary grindstone.

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