KR20110002012A - Device and method for forming cutting line in glass plate - Google Patents

Abstract

In the cutting board processing apparatus of the glass plate which runs a cutter and processes four cutting lines on the surface of a glass plate in order to process a glass plate in a rectangular shape, The said cutter is provided with four pieces corresponding to the said four cutting lines, The said four cutters Each has a traveling movement means.

Description

Glass cutting device and cutting method {DEVICE AND METHOD FOR FORMING CUTTING LINE IN GLASS PLATE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting line processing device and a cutting line processing method of a glass plate, and in particular, in order to cut a glass plate having a predetermined size to a size of a rectangular glass substrate used for a flat panel display (FPD), cutting lines are formed on four sides of the glass plate. It relates to a cutting line processing apparatus and a cutting line processing method of a glass plate to process.

FPD glass substrates, such as a liquid crystal display and a plasma display, are processed into the glass substrate of a product external dimension by bending-processing a glass plate to a predetermined rectangular shape magnitude | size in a bending cutting process, and chamfering this edge part in a chamfering process. And this glass substrate is conveyed to the surface grinding | polishing process through the washing | cleaning process arrange | positioned at the rear end of a chamfering process, and an inspection process, and is processed into the glass substrate of a product thickness here.

By the way, the cutting line processing apparatus of the glass plate provided in the said bending cutting process runs a cutter on the surface of a glass plate in order to process a glass plate into a rectangular shape, and the two cutting lines of the X direction and Y orthogonal to the surface of a glass plate in the X direction It is an apparatus which processes two cutting lines of a direction, and the example is shown by following patent document 1 etc.

The cutting line processing apparatus of the glass plate of patent document 1 is equipped with the bridge frame, The X-direction linear movement means which linearly moves a cutter to an X-axis direction, and the Y-axis which linearly moves the bridge frame to a Y-axis direction by a ball screw device. It consists of linear movement means.

That is, in the cutting line processing apparatus of patent document 1, the said X direction linear movement means and the Y-axis linear movement means move four cutters on the surface of a glass plate alternately in the X, Y direction, and the surface of the glass plate 4 It is a device for cutting two cutting lines.

On the other hand, as another cutting machine, the cutting machine which mounts two cutters to the X frame which moves to a X direction, and mounts two cutters to the Y frame which moves to a Y direction is known. The cutting line processing apparatus first moves an X frame on a glass plate, processes two cutting lines in the X direction on the glass plate by two cutters of the X frame, and then moves the Y frame on the glass plate to obtain the Y frame. Two cutting lines in the Y direction are processed on the glass plate by two cutters. Thereby, four cutting lines are processed to a glass plate.

Japanese Patent Laid-Open No. 8-188433

However, since the cutting line processing apparatus of patent document 1 processes four cutting lines on a glass plate by running one cutter in X and Y directions, there existed a drawback that cutting process takes time. Thus, when a long time is required for a cutting process, since this cutting process becomes a rate regulation step of a glass substrate manufacturing line, the production efficiency of a glass substrate was deteriorated.

On the other hand, the cutting line processing apparatus provided with two cutters in each of the X frame and the Y frame can process four cutting lines on the glass plate only by moving the X frame in the X direction and moving the Y frame in the Y direction. Compared with the cutting machine of the document 1, cutting line processing time can be shortened. However, this cutting line processing apparatus requires a long time in cutting line processing time too in the case of a large glass plate with one side exceeding 2000 mm (when the cutting line of one side is long), and this also improves the production efficiency of a glass substrate. It was a deteriorating factor.

This invention is made | formed in view of such a situation, and an object of this invention is to provide the cutting line processing apparatus and the cutting line processing method of a glass plate which can improve the production efficiency of a glass substrate.

In the present invention, in order to achieve the above object, in order to process the glass plate into a rectangular shape, a cutting line processing apparatus of a glass plate for processing four cutting lines on the surface of the glass plate by running the cutter, wherein the cutter is applied to the four cutting lines Correspondingly, four are provided, and the four cutters each have a traveling movement means.

In order to achieve the above object, the present invention provides a cutting line processing method of a glass plate in which four cutting lines are processed on a surface of a glass plate by running a cutter to process the glass plate in a rectangular shape. The four cutting lines are processed simultaneously by the traveling movement means which the said four cutters respectively have, and the four cutting lines provide the cutting method of the glass plate characterized by the above-mentioned.

According to the present invention, four cutters traveling by each traveling movement means are provided corresponding to four cutting lines, and the four cutters are simultaneously moved to process four cutting lines. Thereby, in this invention, since the whole (four) cutting lines are processed by the processing time for one cutting line, the cutting line processing time can be shortened significantly. Therefore, this invention can improve the productivity of a glass substrate.

Moreover, in this invention, it is preferable that the said cutter is supported so that a movement to the orthogonal direction with respect to the running direction of the cutter is possible, and the movement amount of the said orthogonal direction is controlled. As a result, the present invention enables subtle precision correction of the squareness and parallelism of the four cut lines.

Moreover, in this invention, while the travel guide member of the said adjacent cutter is arrange | positioned with a different height, the cutter supported by the travel guide member of the low side travels and moves the downward position of the travel guide member of the high side, It is preferable that the cutter supported by the travel guide member on the high side travels and moves upward of the travel guide member on the low side. As a result, in the present invention, since the cutter can travel to the end of the glass substrate, four cut lines can be processed from one end portion to the other end portion of the glass plate, and adjacent cut lines are connected to each other. It is possible to manufacture a glass substrate having good quality without back light.

According to the cutting line processing apparatus and the cutting line processing method of the glass plate which concern on this invention, each four cutting lines are equipped with four cutters which drive independently each other, and the four cutters drive | move and move simultaneously, so that four cutting lines can be processed simultaneously. Since the cutting process time can be shortened significantly, the productivity of a glass substrate can be improved by this.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the whole structure of the cutting machine of embodiment.
2 is a plan view of the cutting machine of the embodiment.
3 is a block diagram showing the configuration of the cutting machine shown in FIG.

EMBODIMENT OF THE INVENTION Hereinafter, the preferable form of the cutting line processing apparatus and the cutting line processing method of the glass plate which concerns on embodiment of this invention is demonstrated in detail according to an accompanying drawing.

FIG. 1: is a whole perspective view which shows the cutting machine (cut line processing apparatus) 10 of the glass plate of embodiment, and FIG. 2 is a top view of the cutting machine 10. As shown in FIG.

The cutters 10 shown in these figures are provided with four cutter heads on the glass plate 16 which the glass adsorption table 14 is horizontally installed on the base 12, and is adsorbed-held by this glass adsorption table 14 ( 18, 20, 22, and 24 travel in a predetermined direction, so that four cutouts A, B, C, which are two cutouts in the X direction and two cutouts in the Y direction that cross at substantially right angles with the cutout in the X direction. It is an apparatus which processes D to the glass plate 16. Thereby, the rectangular glass substrate is cut out from the glass plate 16. In addition, below the cutter heads 18, 20, 22, 24, rotatable disk-shaped cutters 19, 21, 23, 25 are provided. These cutters 19, 21, 23, 25 are pressed to the surface of the glass plate 16 by a predetermined pressure, and each side 16A, 16B, 16C, 16D of the glass plate 16 is moved by the traveling movement means mentioned later. As a result, the traveling lines A to D are simultaneously processed along the sides 16A to 16D of the glass plate 16 by traveling alone. In addition, the glass adsorption table 14 is formed in a rectangular shape on the surface thereof, and is formed in a box shape as a whole, and the rectangular glass plate 16 is adsorbed and held in a suction hole (not shown) formed on its flat surface. It is decided. In addition, the suitable size of the glass plate 16 which the cutting line is processed and cut out by the cutting machine 10 is a glass plate whose thickness is 0.1-3.0 mm with the magnitude | size of 1500 * 1800 mm or more.

The cutter heads 18, 20, 22, and 24 are attached to the sliders 34, 36, 38, and 40 via the rods 26, 28, 30, and 32. The rods 26, 28, 30, and 32 are supported by the sliders 34, 36, 38, and 40 so as to be movable in the direction orthogonal to the cut lines A to D, and the servo mechanism (shown in FIG. 50, 52, 54, 56 are controlled according to the position of the cutting lines A-D in the said orthogonal direction. Thereby, the linear movement trace of the cutters 19, 21, 23, 25 can be complemented so that it may correspond with a predetermined cutting line trace.

The control part 58 shown in FIG. 3 is a microcomputer which controls overall the drive part of the cutter 10, and is based on the complementary information stored in the memory | storage part 60 which is an external memory device, 54, 56). That is, in the memory | storage part 60, the complementary information according to the cutter running position is memorize | stored for making the linear movement trajectory of the cutters 19, 21, 23, 25 match with the preset cutting track. The control unit 58 controls the servo mechanisms 50, 52, 54, 56 on the basis of the complementary information, and transfers the linear movement trajectory of the cutters 19, 21, 23, 25 to the preset cutting trajectory. The cuts A to D are processed by matching.

As shown in FIGS. 1 and 2, the sliders 34 and 38 are side surfaces of the glass adsorption table 14 and guide rails (traveling guide members) which are laid in parallel along the sides 16A and 16C of the glass plate 16. 42, 46 are provided so that the slide movement is possible. In addition, the screw rods (not shown) of the screw feeders 62 and 66 of FIG. 3 which are the traveling movement means are arrange | positioned in parallel with the guide rails 42 and 46, and are screwed to the sliders 34 and 38. As shown in FIG. Accordingly, the sliders 34 and 38 are moved beyond the other end from the front of one end of the sides 16A and 16C of the plate of the glass plate 16 by the driving force of the screw feed devices 62 and 66. By this movement, since the cutter 19 travels along the sides 16A and 16C of the glass plate 16, cutting lines A and C are processed to the glass plate 16. As shown in FIG. Moreover, the said screw rod is provided in the glass suction table 14.

The sliders 36 and 40 are provided so that slide movement is possible to the guide rails (running guide members) 44 and 48 which were installed in parallel perpendicularly along the sides 16B and 16D of the glass plate 16. These guide rails 44 and 48 are vertically mounted on the base 12. In addition, while the screw rods (not shown) of the screw transfer devices 64 and 68 of FIG. 3 which are traveling movement means are installed in the guide rails 44 and 48, they are arranged in parallel with the guide rails 44 and 48, It is screwed to the sliders 36 and 40. Therefore, the sliders 36 and 40 are moved beyond the other end from the front of one end of the edge 16B, 16D of the board of the glass plate 16, when the screw feeder 64, 68 is driven. By this movement, since the cutters 21 and 25 travel and move along the sides 16B and 16D of the glass plate 16, cutting lines B and D are processed to the glass plate 16. As shown in FIG.

According to the cutter 10 comprised in this way, the cutters 19 and 21 which drive independently travel by the screw feeders 62, 64, 66, 68 which are each travel movement means corresponding to four cutting lines A-D. 4 and 23 are provided. Then, the control unit 58 drives and controls the screw feed units 62, 64, 66, 68 at the same time, and simultaneously moves the four cutters 19, 21, 23, 25 to move the four cutting lines A to D simultaneously. Processing. In addition, the belt moving apparatus may be sufficient as the traveling movement means, and what is necessary is just to be able to move a cutter at predetermined speed.

Thereby, since the cutting machine 10 of embodiment can process four cutting lines A-D at the processing time for one cutting line, compared with the conventional cutting line processing apparatus, cutting line processing time can be shortened significantly. Therefore, according to the cutting machine 10 of embodiment, productivity of a glass substrate can be improved. Note that the cutting operation may not start at the same time unless the cutter heads interfere with each other, or may operate with a different timing. In addition, although the cutting speed may be the same speed, when the length of the edge | side of the X direction and a Y direction of a glass plate differs, you may change a cutting line processing speed in a X direction and a Y direction so that cutting line processing time may match.

In addition, as described above, the cutters 19, 21, 23, and 25 of the cutter 10 have a servo mechanism 50, 52, 54, and 56 moving in a direction orthogonal to the traveling direction along the cutting lines A to D. ), The linear movement trajectory in the travel direction of the cutters 19, 21, 23, and 25 can be complemented so as to coincide with the preset cutting line trajectory. Thereby, since the cutters 19, 21, 23, 25 drive and move the cutting machine 10 of the embodiment along the preset cutting line trajectory, the glass plate is cut by the predetermined dimension.

By the way, when the linear movement trajectories of the cutters 19, 21, 23, 25 are not compensated by the servo mechanisms 50, 52, 54, 56 as described above, the cutters 19, 21, 23, 25 The travel movement is dependent only on the straightness accuracy of the guide rails 42, 44, 46, 48. In recent years, even when one side exceeds 2000 mm, the dimensional precision of the glass substrate requires that the error of the width dimension is about ± 0.1 mm (one side ± 0.05 mm), and the guide rail 42 so as to satisfy the above precision. , 44, 46, 48) is difficult to adjust.

Therefore, in the cutting machine 10 of embodiment, the cutter 19, 21, 23, 25 runs so that the linear movement trace of the cutter 19, 21, 23, 25 may match with the predetermined cutting line trace. Since the movement amount in the direction orthogonal to the direction can be compensated by the servo mechanisms 50, 52, 54, and 56 (compensating the precision of the guide rail), delicate adjustment of the guide rails 42, 44, 46, and 48 is unnecessary. And the glass of a more accurate cutting dimension can be obtained.

This effect spreads to the chamfering process of the next process. That is, since the glass plate 16 is bent more precisely in the bending process of a previous process, in the chamfering process of the next process, the grinding value of a chamfer becomes equal in each side, and also becomes a small quantity. Therefore, the effect that the chamfering processing time in a chamfering process can be shortened and the life of a chamfering grindstone can be extended also is acquired.

Moreover, according to the cutting machine 10 of embodiment, as shown in FIG. 1, the guide rails 42, 44, 46, 48 of the adjacent cutters 19, 21, 23, 25 are arrange | positioned with a different height, have. That is, the guide rail 44 is set high with respect to the guide rail 42, the guide rail 46 is low with respect to the guide rail 44, and the guide rail 48 is set high with respect to the guide rail 46. FIG. In addition, the guide rail 42 and the guide rail 46 are set to the same height, and the guide rail 44 and the guide rail 48 are set to the same height.

And the cutter heads 18 and 22 supported by the guide rails 42 and 46 of the lower side can travel downward of the guide rails 44 and 48 of the high side like FIG. In addition, the cutter heads 22 and 24 supported by the guide rails 44 and 48 on the high side can travel and move upward of the guide rails 42 and 46 on the low side.

The advantages of the guide rail structure will be described.

As shown in FIG. 1, the glass plate 16 is horizontally fixed to the glass suction table 14, and four cutter heads 18, 20, 22, and 24 are supported on the guide rails 42, 44, 46, and 48, respectively. In the case of the cutting machine 10 which cuts a rectangular glass substrate by processing the four cutting lines A to D on the glass plate 16, each guide rail 42, 44, 46, 48 which travels and moves. If the heights of the two are set to the same height, the ends of the adjacent guide rails 42, 44, 46, and 48 interfere with each other at the traveling moving ends of the cutters 19, 21, 23, and 25, so that the cutter head 18 , 20, 22, and 24 cannot travel to the traveling movement end, and it becomes difficult to cross four cut lines. If four cutting lines do not intersect, a defect may generate | occur | produce in the corner part of a glass substrate in a bending process, and manufacture of a high quality glass substrate becomes difficult. Therefore, in order to intersect the four cut lines, countermeasures such as providing different uniaxial drive devices in the cutter heads 18, 20, 22, and 24 are necessary, and the structure of the device becomes complicated.

Therefore, in the cutting machine 10 of embodiment, the cutter heads 18 which are supported by the guide rails 42 and 46 of the lower side by arrange | positioning the height of the adjacent guide rails 42, 44, 46, and 48 differently are provided. 22, the lower side of the guide rail (44, 48) of the high side can move and move, the cutter head (20, 24) supported by the guide rail (44, 48) of the high side guide rail ( 42 and 46) were made to be movable to travel.

Thereby, since the cutter heads 18, 20, 22, and 24 of the embodiment of the cutting machine 10 can travel to move from one end of one side of the glass plate 16 to the other with a simple structure, Cut lines A to D intersect with each other, and a glass substrate having a good quality without cutout or the like can be produced in the bending step.

In addition, the method of cutting line processing is not limited to a wheel cutter, Laser cutting may be sufficient.

Although this invention was detailed also demonstrated with reference to the specific embodiment, it is clear for those skilled in the art that various changes and correction can be added without deviating from the mind and range of this invention. This application is based on the JP Patent application (Japanese Patent Application No. 2008-080268) of an application on March 26, 2008, The content is taken in here as a reference.

10: cutting machine
12: base
14: glass adsorption table
16: glass plate
16A, 16B, 16C, 16D: sides of the glass plate
18, 20, 22, 24: cutter head
19, 21, 23, 25: cutter
26, 28, 30, 32: loading
34, 36, 38, 40: slider
42, 44, 46, 48: guide rail
50, 52, 54, 56: servo mechanism
58: control unit
60: memory
62, 64, 66, 68: thread feeder

Claims (5)

In the cutting line processing apparatus of the glass plate which runs a cutter and processes four cutting lines on the surface of a glass plate, in order to process a glass plate in a rectangular shape,
Four cutters are provided corresponding to the four cutting lines, and each of the four cutters has a traveling movement means. The cutting line processing apparatus of the glass plate of Claim 1 in which the said cutter is supported so that a movement to the orthogonal direction is possible with respect to the running direction of the said cutter, and the movement amount of the said orthogonal direction is controlled. 2. The traveling guide member of the adjacent cutters is arranged to have different heights, and the cutter supported by the lower travel guide member travels and moves downward of the high travel guide member. The cutting board processing apparatus of the glass plate which the cutter supported by the travel guide member of the side travels and moves to the upper position of the travel guide member of the low side. The driving guide member of the said adjacent cutter is arrange | positioned with a different height, The cutter supported by the traveling guide member of the low side runs a downward movement of the traveling guide member of a high side, and is high. The cutting board processing apparatus of the glass plate which the cutter supported by the travel guide member of the side travels and moves to the upper position of the travel guide member of the low side. In the cutting line processing method of the glass plate which runs a cutter and processes four cutting lines on the surface of a glass plate, in order to process a glass plate in a rectangular shape,
And cutting four cutting lines simultaneously by traveling four cutters provided corresponding to the four cutting lines at the same time by traveling moving means each of the four cutters.

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