JP4319520B2 - Automatic glass scriber - Google Patents

Description

  The present invention relates to an automatic glass scriber.

  When a slide glass used for producing a liquid crystal plate or a microscope specimen used for a display unit such as various electronic device parts is manufactured, a glass substrate having a predetermined size is obtained by dividing a large panel. For the cutting of the glass substrate, the glass substrate was fixed on the surface of the substrate of the cutting device by means such as vacuum suction, and the outer peripheral portion was formed of a hard member such as cemented carbide or diamond on one side of the glass substrate. With a wheel-shaped cutter, a linear streak called scribing is applied, and pressing is performed along the scribe line by pressing means such as a press or roller from the opposite surface side, against the substrate surface generated in the scribe groove of the glass substrate A so-called scribing method in which vertical cracks are developed and cut is generally performed, and an automatic glass scriber in which this is automated is used.

  The background art will be described below with reference to FIGS. FIG. 8 is a plan view of an automatic glass scriber in the background art, FIG. 9 is a side view of FIG. 8, FIG. 10 is a side view showing an example of an automatic glass scriber with a twin cutter head in the background art, and FIG. It is a perspective view which shows another example of the automatic glass scriber provided with the twin cutter head in background art.

As shown in FIGS. 8 and 9, a conventional automatic glass scriber is provided with two guide rail bases 2 arranged in parallel in the longitudinal direction on a rectangular base 1, and a table guide rail 3 is provided on each of them. Keep it fixed. A Y-direction ball screw 4 is supported by two bearings 5 at the center of the two table guide rails 3 in parallel with the table guide rail 3. A Y-direction motor 7 capable of normal rotation and reverse rotation is provided on the axial extension of the Y-direction ball screw 4, and the output shaft and the Y-direction ball screw 4 are connected by a coupling 8. A Y-direction ball nut 9 is fitted to the Y-direction ball screw 4, and the Y-direction ball nut 9 is fixed to the bottom surface of the Y-θ table device 10. Four guide blocks 11 are also attached to the bottom surface of the Y-θ table device 10, and the guide blocks 11 are slidably fitted to the table guide rail 3.

  The cutter head guide 12 and the X direction ball screw 13 are supported by the support pillars 6 across the table guide rail 3 at a substantially central portion in the Y direction of the base 1. One end of the X-direction ball screw 13 is connected to an X-direction motor 14 that can be rotated forward and backward, and an X-direction ball nut 15 is fitted to an intermediate portion. A cutter head assembly 16 is slidably fitted to the cutter head guide 12, and a cutter 17 is attached to the cutter head assembly 16. Since the X direction ball nut 15 and the cutter head assembly 16 are integrated, the cutter 17 fixed to the cutter head assembly 16 is movable in the X direction. Further, the cutter 17 is structured to be movable in the Z direction on the cutter head assembly 16.

  The Y-θ table device 10 includes an upper surface table 21 and a base table 22. A table rotation motor 23 capable of forward / reverse rotation is attached to the side surface of the base table 22, and a pinion 24 attached to the output shaft thereof meshes with a sector 25 provided on one end surface of the upper table 21. The upper surface table 21 can be rotated 90 degrees with respect to the base table 22 by a table rotation motor 23.

  When the automatic glass scriber 100 is used, first, in order to fix the work 26 (glass substrate), the Y-θ table device 10 is moved by the Y-direction feed motor 7 to a position where the support column 6 does not interfere with the upper surface. A workpiece 26 (glass substrate) is fixed on the table 21. While finely adjusting the position of the workpiece 26 (glass substrate) using the fine adjustment motor 27 while monitoring the alignment mark of the workpiece 26 (glass substrate), the cutter 17 is lowered. Thereafter, the Y-θ table device 10 is fed in the Y-axis direction by the Y-direction feed motor 7, and the workpiece 26 (glass substrate) is scribed to the end surface. Next, with the cutter 17 raised in the Z direction, the Y-θ table device 10 is returned to the Y direction, and then the cutter head assembly 16 is fed in the X direction by the X direction feed motor 14 to reach the next scribe position. Then, the cutter 17 is lowered again, the workpiece 26 (glass substrate) is scribed while moving the Y-θ table device 10 in the Y-axis direction, and all the scribes in a certain direction are performed by repeating this process. When this is completed, the upper table 21 is rotated 90 degrees by the table rotation motor 10 and the direction of the workpiece 26 (glass substrate) mounted thereon is rotated 90 degrees, and then the table is again transferred to the Y-θ table apparatus 10 and the cutter 17. By making the same movement as before the rotation, the scribe line perpendicular to the scribe line made earlier is engraved.

  By the way, as the number of sheets to be cut out from one sheet is increased by increasing the size of the workpiece for the purpose of improving production efficiency, the above-mentioned single cutter type automatic glass scriber takes a long time to cut. As the amount of head movement increases, there is a problem that the error dimension of the product increases cumulatively. Therefore, a twin system with two cutters appeared. An example of this will be described with reference to FIG. 10 based on real fairness 7-18737.

  A table 32 provided on the upper surface of the movable table 31 is rotatable 90 degrees on the movable table 31. A feed nut 35 fixed to the bottom surface of the movable table 31 that is movable in the Y direction along the Y-direction guide rail 34 on the base 33 is an output shaft of a motor 36 that can be rotated forward and backward provided on the base 33. Is engaged with a screw rod 37 that interlocks with. On the other hand, the horizontal movement member 40 supported by the X-direction guide rail 39 supported by the support column 38 can be driven in the X direction by a motor, and a support arm 41 is provided at the lower end of the horizontal movement member 40, and the support upper arm A first cutter holding means 42 and a second cutter holding means 43 are attached to 41 so as to be freely movable by operating the handle 44. Further, cutters 45 and 46 are attached to each cutter holding means so as to be movable up and down. A work 47 is placed on the table 32. When the workpiece 47 is scribed using the automatic glass scriber 200, the cutters 45 and 46 are pressed against the workpiece 47 to move the first cutter holding means 42 and the second cutter holding means 43 in the X direction, and simultaneously at two locations. Scribe with The Y-direction movement function of the table 32 is for feeding the workpiece 47 by the scribe width, and the 90-degree rotation function of the table 32 is an edge that is orthogonal to the edge that has been scribed by the cutters 45 and 46 that move only in the X direction. It is provided to scribe. At the start and end of scribing, any cutter that does not perform work can be raised as necessary.

  Another example in which two cutters are mounted will be described with reference to FIG. 11 based on Japanese Patent Laid-Open No. 2000-86262. A gantry 53 including a support column 51 and a guide bar 52 is movable in the Y direction perpendicular to the guide bar 52 along the rail 54, and the moving member 55 is movable in the X direction on the guide bar 52. A holder support 56 is provided on the moving member 55 so as to be rotated 90 degrees via a rotating means 57 (motor). The holder support 56 can be freely moved along a guide by a linear motor. Two pedestals 58 and 59 are provided. Further, scribe heads 62 and 63 having cutters 60 and 61 at the lower ends are provided on the respective pedestals 58 and 59. In the automatic glass scriber 300 having the above configuration, the table 64 is fixed, but the scribe heads 62 and 63 are movable in the X direction and the Y direction with respect to the table 64. When scribing, first, scribing is performed in two lines in the Y direction. When the scribing is completed, the holder support 56 is rotated 90 degrees and then moved in the X direction to perform scribing in two lines.

JP 2000-86262 A Japanese Utility Model Publication No. 7-18737

  In the case of actual fairness 7-18737, scribing ability was improved by shortening the scribing time by twinning the cutter. However, when changing the scribe position, the two cutters move as a set, and the distance between the two cutters is set manually, so the scribe pitch cannot be changed freely during the scribe process. It is. In recent years, there has been a demand for scribing simultaneously with more than two cutters in order to increase the scribing efficiency. However, due to its structure, the development from twin to three or more multi-channels has a problem that the configuration becomes complicated and expensive.

  In the case of Japanese Patent Laid-Open No. 2000-86262, the twin type is provided with two cutters, and the two cutters move in one set, which is the same as the real fair 7-18737, but the distance between the two cutters. Since the setting is automatic, the scribe pitch can be changed during the scribe. However, the movement in the X direction is complicated due to the double structure, and there is a problem that it is difficult to obtain the scribe dimension accuracy because the rotation means is unstable with respect to the torque. In addition, due to the structure, the development from twin to multi-multiple has a problem that the configuration becomes complicated and expensive.

The present invention has been made to solve the above problems. As a means for solving the problem, the invention according to claim 1 of the present invention includes a Y-θ table that is rotatable and movable in the Y direction along the table guide rail, and straddles the table guide rail in the Y direction. In an automatic glass scriber provided with a workpiece dividing unit movable in the Z direction on an orthogonal frame so as to be movable in the X direction,
On the upper surface of the frame,
A plurality of X-direction drive units for connecting a ball screw fitted with a ball nut having a nut block to an output shaft of the X-direction motor and moving the nut block in the axial direction of the ball screw by rotation of the X-direction motor ; The ball screw is fixed while being oriented parallel to the X direction,
Furthermore,
A plurality of workpiece cutting units equipped with a cutter at the tip and movable along the X-direction guide rail on the side of the frame are mounted on the side of the frame,
A nut block constituting the X-direction drive unit,
A plurality of work cutting units are arranged so as to be movable in the X direction by connecting a base plate constituting the work cutting unit with a cutter head bracket to form a plurality of cutter head assembly units. It is a feature.

  The invention according to claim 2 of the present invention is characterized in that each of the plurality of workpiece dividing units is provided with driving means movable in the Z direction.

  The invention according to claim 3 of the present invention is characterized in that the plurality of cutter head assembly units are independently movable in the X and Z directions.

  The invention according to claim 4 of the present invention is characterized in that the plurality of cutter head assembly units are arranged so that a part of the movable area between adjacent workpiece cutting units overlaps. It is.

  The invention according to claim 5 of the present invention is characterized in that the plurality of cutter head assembly units are intensively controlled by a main controller.

  The invention according to claim 6 of the present invention is characterized in that the plurality of X-direction drive units are arranged in two rows.

The invention according to claim 7 of the present invention is characterized in that the total number of the plurality of cutter head assembly units is 2 to 4.
The invention according to claim 8 of the present invention is characterized in that the workpiece dividing unit is provided with means for the cutter to escape when a convex portion exists on the workpiece surface.

  The X-direction drive unit used in the present invention has a simple structure. This X-direction drive unit is arranged in parallel on the upper surface of the frame with sufficient space as required, and a workpiece dividing unit that interlocks with the X-direction drive unit is slidably provided on the same guide on the side of the frame. The development of multi-scribing cutter became easy, and a highly productive automatic glass scriber was obtained. In addition, since the X-direction drive unit having a simple structure is arranged on the upper surface of the frame having enough space, a highly rigid configuration can be easily realized, and as a result, an automatic glass scriber with high scribe dimension accuracy can be obtained.

  By centrally controlling the multi-purpose cutter head assembly unit and optimizing and distributing the work to each cutter head assembly unit, the cutting capacity has been improved more than the additional number of cutters, and the cutting time has been shortened. In addition, since adjustment and replacement of the cutter and the like can be performed at once, an effect of shortening the work time required for maintenance was also produced. In addition, by freely setting the pitch, products with different scribe widths can be mixed and produced as necessary.

  Next, the best mode for carrying out the present invention will be described with reference to FIGS. 1 is a plan view of an automatic glass scriber of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is an enlarged plan view of a frame assembly portion in FIG. 1, and FIG. FIG. 5 is a plan view of the part, FIG. 5 is an arrow C view in FIG. 4, a front view of the workpiece cutting unit, FIG. 6 is an arrow D view in FIG. These are top views which show the various arrangement | sequences of the X direction drive unit used for this invention. By the way, the automatic glass scriber of the present invention shown in FIGS. 1 and 2 is the same as the automatic glass scriber described in the background art with reference to FIGS. Accordingly, the same components as those described in the background art are denoted by the same reference numerals, and only a brief description is given, and descriptions of portions not directly related to the gist of the invention are omitted.

The automatic glass scriber 400 of the present invention shown in FIGS. 1 and 2 is similar to the automatic glass scriber 100 described in the background art, on the two guide rail bases 2 arranged side by side on the rectangular base 1, respectively. The rail 3 is fixed. A Y-direction ball screw 4 is supported by a bearing 5 at the center of the two table guide rails 3, and a Y-direction motor 7 capable of normal rotation and reverse rotation is provided on the axis of the Y-direction ball screw 4. The output shaft is connected to the Y direction ball screw 4 by a coupling 8. On the bottom surface of the Y-θ table device 10 are attached a Y-direction ball nut 9 fitted to the Y-direction ball screw 4 and four guide blocks 11 slidably fitted to the table guide rail 3. . The Y-θ table device 10 on which the workpiece 26 is placed includes an upper surface table 21 and a base table 22, and the upper surface table 21 can be rotated 90 degrees with respect to the base table 22 by a table rotation motor 23.

Around the center portion of the base 1 in the Y direction, four X direction drive units 110 are arranged in parallel in two rows on the upper surface of the frame 151 that is supported by the support column 101 and straddles the table guide rail 3 and orthogonal to the Y direction. The four X-direction drive units 110 and the four workpiece cutting units 120 each having a cutter 17 at the tip and movable along the X-direction guide rail 152 on the side of the frame 151 are connected by a cutter head bracket 141. There is a frame assembly 150 composed of four cutter head assembly units 140 configured as described above. This frame assembly 150 is a main component in the automatic glass scriber 400 of the present invention.

  As shown in an enlarged view in FIG. 3, the X-direction drive unit 110 includes an X-direction ball screw in which an output shaft of an X-direction motor 111 capable of forward and reverse rotation and an X-direction ball nut 113 to which an X-direction nut block 112 is fixed are fitted. 114 is connected via a coupling 115. A total of four X-direction drive units 110 are attached to the upper surface of the frame 151 in two rows using the X motor bracket 116 and the bearing 117.

  Next, the structure of the workpiece | work parting unit 120 which has the drive means which can move the cutter 17 to a Z direction is demonstrated using FIGS. A base plate 123 having an X guide block 122 is attached to the L-shaped Z motor bracket B121. A Z-direction motor 124 capable of forward and reverse rotation is fixed to an L-shaped Z motor bracket A125 via a Z motor bracket B121. A Z-direction guide rail lower 126 is provided on the Z motor bracket B121 to guide a lower guide block 128 attached to the bottom surface of the nut bracket 127. A Z-direction nut block 131 having a Z-direction ball nut 129 is fixed to the upper surface of the nut bracket 127, and the Z-direction ball nut 129 is fitted with a Z-direction ball screw 132 that is interlocked with the output shaft of the Z-direction motor 124. The cutter 17 is attached to the upper surface of the nut bracket 127 via a cutter escape means that enables the cutter 17 to escape when a convex portion exists on the workpiece 26. That is, an upper Z-direction guide rail 133 is provided on the top surface of the nut bracket 127 and guides the upper guide block 135 attached to the bottom surface of the cutter bracket 134. An air cylinder 136 is provided on the upper surface of the nut bracket 127, and its output shaft is in contact with the upper end of the cutter bracket 134 to which the cutter 17 is attached via the cutter holder 137 at the lower end. The cutter 17 is movable in the Z direction by the output of the Z direction motor 124. By fitting the X guide block 122 provided on the base plate 123 with the X direction guide rail 152 provided on the side surface of the frame 151, the workpiece dividing unit 120 is slidably mounted on the side surface of the frame 151.

  The cutter head assembly unit 140 is configured by connecting the X-direction drive unit 110 and the workpiece cutting unit 120 with a cutter head bracket 141. The cutter head bracket 141 can be roughly divided into two types, a short type and a long type. The short bracket connects the X direction drive unit 110 and the work dividing unit 120 arranged in a row near the side of the work cutting unit 120 of the frame 151 and the long bracket is connected to the X direction driving unit 110 arranged in a far row and the workpiece. The dividing unit 120 is connected.

  When the four X-direction nut blocks 112 move within the movable range, the X-direction movement range of the cutter 17 provided at the tip of the four work cutting units 120 interlocked with the nut block 112 is the adjacent work cutting unit 120. The shape and arrangement of the X-direction drive unit 110 and the shape of the cutter head bracket 141 are determined so as to overlap with the X-direction movement range of the cutter 17 at the end.

  Although the detailed description is omitted, the automatic glass scriber 400 of the present invention can control each cutter head assembly unit 140 independently in the X direction and the Z direction according to the program, but at the same time, it interferes with the movable area. It has a main controller that performs centralized control so that the units do not interfere with each other by computer management of the prevention area. By this main controller, all the cutter head assembly units 140 are centrally controlled so as to scribe the workpiece 26 in the most efficient procedure according to the program.

  The total number of cutter head assembly units 140 used in the automatic glass scriber of the present invention is determined according to the size of the workpiece 26 to be scribed. As an example, the arrangement of the X-direction drive units 110 will be described with reference to FIG. When the total number of the cutter head assembly units 140 is two and the arrangement is two rows, the result is as shown in FIG. 7A or FIG. 7B. When the X direction drive units 110 are arranged in two rows and the total number of X direction drive units 110 is three, the arrangement shown in FIG. When the arrangement of the X-direction drive units 110 is two rows and the total number of the X-direction drive units 110 is four, the arrangement is as shown in FIG. 7D. This is as detailed in the best mode. . In the above description, only one or two X-direction drive units 110 are arranged in one row in the X direction. However, if the workpiece becomes larger in the future, it is of course possible to increase the number arranged in one row as necessary.

  By the way, in this invention, all 2 rows were demonstrated to the example. As the number of rows increases, the cutter head bracket 141 becomes longer, and it becomes difficult to obtain scribe dimension accuracy. To complement this, the rigidity of the cutter head bracket 141 needs to be increased, so two rows are optimal. However, there is no limit to the number of array rows of the X-direction drive unit 110 of the present invention.

It is a top view of the automatic glass scriber of this invention. It is a side view of FIG. It is an enlarged plan view of the frame assembly part in FIG. It is a top view of the workpiece | work parting unit part in FIG. It is arrow C figure in FIG. It is arrow D figure in FIG. It is a top view which shows the various arrangement | sequences of the X direction drive unit used for this invention. It is a top view of the automatic glass scriber provided with the single cutter in background art. It is a side view of FIG. It is a side view which shows an example of the automatic glass scriber provided with the twin cutter in background art. It is a perspective view which shows another example of the automatic glass scriber provided with the twin cutter in background art.

Explanation of symbols

3 Table guide rail
4 Y direction ball screw
7 Y direction motor
9 Y direction ball nut 17, 45, 46, 60, 61 Cutter 10 Y-θ table device 26, 47 Workpiece (glass plate)
34 Y-direction guide rail 52 Guide bar 54 Rail 55 Moving member 56 Holder support 57 Rotating means 62, 63 Scribe head 110 X-direction drive unit 111 X-direction motor 120 Work parting unit 124 Z-direction motor 126 Z-direction guide rail lower 133 Z On direction guide rail 136 Air cylinder 140 Cutter head assembly unit
141 Cutter head bracket 150 Frame assembly
151 Frame 152 X direction guide rail 100, 200, 300, 400 Automatic glass scriber

Claims (8)

A Y-θ table that can be rotated and moved in the Y direction along the table guide rail is provided, and the workpiece cutting unit that can move in the Z direction on the frame perpendicular to the Y direction across the table guide rail is moved in the X direction. In the automatic glass scriber provided, on the upper surface of the frame,
A plurality of X-direction drive units for connecting a ball screw fitted with a ball nut having a nut block to an output shaft of the X-direction motor and moving the nut block in the axial direction of the ball screw by rotation of the X-direction motor ; The ball screw is fixed while being oriented parallel to the X direction,
Furthermore,
A plurality of workpiece cutting units equipped with a cutter at the tip and movable along the X-direction guide rail on the side of the frame are mounted on the side of the frame,
A nut block constituting a plurality of X-direction driving unit,
A plurality of workpiece cutting units are arranged so as to be movable in the X direction by connecting the base plates constituting the plurality of workpiece cutting units with a cutter head bracket to form a plurality of cutter head assembly units. An automatic glass scriber characterized by that. 2. The automatic glass scriber according to claim 1, wherein each of the plurality of workpiece dividing units includes a driving unit that is movable in the Z direction. The automatic glass scriber according to claim 1 or 2, wherein the plurality of cutter head assembly units are independently movable in the X and Z directions. The automatic glass according to any one of claims 1 to 3, wherein the plurality of cutter head assembly units are arranged such that a part of a movable area between adjacent workpiece cutting units overlaps. Scriber.
The automatic glass scriber according to any one of claims 1 to 4, wherein the plurality of cutter head assembly units are centrally controlled by a main controller. The automatic glass scriber according to claim 1, wherein the plurality of X-direction drive units are arranged in two rows. The automatic glass scriber according to any one of claims 1 to 5, wherein the total number of the plurality of cutter head assembly units is 2 to 4. The automatic glass scriber according to claim 2, wherein the workpiece dividing unit includes means for allowing the cutter to escape when a convex portion exists on the workpiece surface.

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