JP2013159506A - Method for cutting glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for cutting glass by which thin glass can stably be cut using a water jet in a short time.SOLUTION: A method for cutting glass is a method for cutting glass 2 by which the glass 2 laid on a base 12 is cut along a cutting line L using a water jet, wherein vibration suppressors 20 arranged on both sides of the cutting line L of the glass 2 to suppress vibration of the glass 2 generated during cutting work are placed on a surface of the glass 2. The vibration suppressor 20 is provided with an inclined part 23 in which an upward inclined part 21 that rises at a slope in a direction receding from the cutting line L and a downward inclined part 22 that declines in the direction are continuously connected, and a flat bottom part 24 laid on the surface of the glass 2.

Description

  The present invention relates to a glass cutting method, and more particularly to a glass cutting method for cutting glass with a water jet.

  Glass used for the production of displays such as touch panels, liquid crystal displays, and electroluminescence displays is made from glass larger than that glass (hereinafter referred to as “base material”), and by cutting this base material, Manufactured.

  For example, glass used for 3.5-inch monitors and 10-inch monitors (hereinafter referred to as “individual pieces”) is a base material generally referred to as G6 (1850 mm × 1500 mm) or G8 (2200 mm × 2500 mm). On the other hand, after decorating and forming a thin film on the size of the individual piece material, a plurality of individual piece materials are cut out from the base material.

  Moreover, many glass used for the touch panel mentioned above has the surface chemically strengthened.

  As such glass cutting methods, (1) cutting applying mechanical or thermal stress, (2) cutting by laser, (3) cutting using a surface treatment agent such as etching, (4) water jet was used. Cutting and the like are known.

  Among such methods, in particular, a cutting device using a water jet ejects water or the like from a water jet nozzle and cuts the glass by the water flow (see Patent Document 1).

JP 2004-345871 A

  In recent years, the need for cutting thin tempered glass with a thickness of about 0.55 to 0.7 mm has increased, but with the conventional cutting methods as described above, cutting with high dimensional accuracy is difficult and often breaks. Therefore, there is a problem that the yield in the cutting process does not increase.

  In addition, cutting with high dimensional accuracy has a problem that productivity is not increased because it takes an extremely long time.

  One object of the present invention is to eliminate such a problem, and an example of the object is a glass cutting method capable of stably cutting thin glass with a high dimensional accuracy in a short time using a water jet. Is to provide.

  In order to solve the above problem, the glass cutting method according to claim 1 is a glass that cuts the glass (2) placed on the base (12) along the cutting line (L) using a water jet. A vibration suppressing body (20) disposed on both sides of the glass cutting line for suppressing glass vibration generated during cutting processing is provided on the surface of the glass, and the vibration suppression The body has an inclined part (23) in which an ascending inclined part (21) that rises while being inclined in a direction away from the cutting line and a descending inclined part (22) that descends while being inclined are connected continuously. And a flat bottom surface portion (24) placed on the surface of the glass.

  The glass cutting method according to claim 2 is characterized in that, in the glass cutting method according to claim 1, the inclined portion of the vibration suppressing body is formed in a curved shape.

  The glass cutting device according to claim 3 is a glass cutting device for cutting glass along a cutting line using a water jet, and is disposed above the base and a base on which the glass is placed. A water jet nozzle (15) that is movable in a horizontal direction and jets a water stream to the glass, and is fixed on the surface of the glass and disposed on both sides of the cutting line of the glass. A vibration suppressing body for suppressing vibration of the glass during processing, the vibration suppressing body rising as it is inclined in a direction away from the cutting line, and a downward inclination ascending while descending And a flat bottom surface part placed on the surface of the glass.

  Further, the vibration suppressing body according to claim 4 is a glass cutting device that cuts the glass by ejecting a water flow from a water jet nozzle along a cutting line to the glass disposed on the base. The vibration suppressing body includes a pair of base bodies (20a) fixed on the surface of the glass and disposed on both sides of the glass cutting line. An inclined portion formed by continuously connecting an ascending inclined portion that rises while being inclined in a direction away from the cutting line, and a descending inclined portion that descends while being inclined, and a flat shape placed on the surface of the glass And a bottom surface portion.

  According to the present invention, a thin glass can be cut efficiently and stably.

It is a schematic diagram which shows the cutting state of the glass using a water jet apparatus. It is a figure for demonstrating the flow of the jet flow during cutting. It is an external view of a vibration suppression body. FIG. 4A is a front view and FIG. 4B is a cross-sectional view taken along the line II of FIG. 4A.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The glass 2 suitably used in the glass cutting method of the present embodiment is used for production of displays such as a touch panel, a liquid crystal display, and an electroluminescence display, and is a thin glass having a predetermined strength with a chemical treatment applied to the surface. It is. Since this glass 2 has a thin surface compressive stress layer as compared with the conventional tempered glass and has a high compressive stress, cracks are likely to occur on the end face due to vibration during processing in mechanical processing. And when a crack arises, a crack will progress from the generation | occurrence | production site | part of the crack, and destruction will occur at a stretch.

  In the present invention, the glass 2 is cut using a water jet in order to prevent vibration during processing as described above.

  In the cutting of the glass using a water jet, as shown in FIG. 1, the water jet device 10 applies a water flow to the cutting portion to perform the cutting process. In addition, since this water jet apparatus 10 uses a conventionally well-known apparatus, detailed description shall be abbreviate | omitted.

  As shown in FIG. 1, the water jet device 10 includes a base 12 on which the glass 2 is placed, and a water jet nozzle 15 that is disposed on the base 12 and is movable in the horizontal direction. For example, although not shown, the water jet nozzle 15 is connected to a high pressure water supply source and an abrasive supply source that are separately arranged, and the high pressure water of about 300 MPa and an abrasive (for example, garnet) are mixed and ejected. Further, the water jet device 10 can move a pair of guide rails 17, 17 disposed along both side edges of the base 12, and is a gate disposed between the guide rails 17, 17. And a holding member 18 that is attached to the portal slider member 16 and holds the water jet nozzle 15. The holding member 18 is formed with a guide 18a capable of moving the water jet nozzle 15 in the vertical direction, and the portal slider member 16 is formed with a guide 16a capable of moving the holding member 18 in the left-right direction. ing. The water jet nozzle 15 can be moved up and down, left and right, or back and forth by a moving mechanism (not shown), and the water jet nozzle 15 moves while jetting water along the cutting line L of the glass 2 at the time of cutting. To do.

  In this embodiment, the glass 2 is fixed and the water jet nozzle 15 is moved. However, the water jet nozzle 15 is fixed and the base 12 is moved along the cutting line L. I do not care.

  In the cutting process by the water jet apparatus 10, in this embodiment, in order to suppress vibration, the upper surface of the glass 2 is constituted by a pair of belt-like base bodies 20 a along both sides of the cutting line L of the glass 2. A vibration suppressing body 20 is provided. Both ends in the front-rear direction of the vibration suppressing body 20 are fixedly attached to the base 12 and hold the glass 2 on the front and back. The glass 2 is sandwiched between the vibration suppressing body 20 and the base 12 to suppress the vibration of the glass 2 during the cutting process along the cutting line L, thereby preventing the occurrence of cracks caused by the vibration.

  As shown in FIG. 2, in the cutting process by the water jet device 10, the cutting is performed by the jet containing the abrasive material ejected from the water jet nozzle 15 colliding with the surface of the glass 2. While most of the glass 2 flows down in the direction of gravity (vertical direction) with the crushed glass 2, a part of the jet flows on the surface of the glass 2.

  Here, depending on the shape of the vibration suppressing body 20, a stagnation point occurs such that the flow of the jet is hindered and the jet flowing out on the surface of the glass 2 stays. This stagnation point is locally loaded and causes destruction.

  Therefore, as shown in FIGS. 2 and 3, the vibration suppressing body 20 of the present embodiment is formed with a small thickness, and the entire shape is formed in a streamline shape such as a cross-sectional shape of an airplane wing. ing.

  As shown in FIG. 2 and FIG. 3, the vibration suppressing body 20 includes, as shown in FIGS. 2 and 3, an ascending inclined portion 21 that rises while being inclined in a direction away from the cutting line L, and a descending inclined portion 22 that is lowered while being inclined. , And the bottom surface 24 is formed in a flat shape and is placed (placed) on the surface of the glass 2 in a superimposed manner.

  In the present embodiment, the ascending inclined portion 21 and the descending inclined portion 22 of the vibration suppressing body 20 are formed in a curved shape, and the connecting portion of the ascending inclined portion 21 and the descending inclined portion 22 is also connected in a curved shape. The ascending slope 21 and the descending slope 22 may be formed in a straight line, and the connecting part may be formed in a curved line. Further, the thinner the thickness, the better, but it is sufficient that the connecting portion between the ascending inclined portion 21 and the descending inclined portion 22 can be overcome at least when the fluid during cutting moves.

  According to the vibration suppression body 20 formed in this way, the jet flow that flows out to the surface of the glass 2 rides from the inner end and flows out from the outer end to the outer end portion of the glass substrate without being disturbed. Occurrence can be prevented.

  The width and height of the vibration suppression body 20 are calculated based on the flow rate of the jet, the flow diameter of the abrasive, the flow rate of the abrasive, and the cutting speed, and are set as appropriate.

  The streamline shape is a curved shape for minimizing resistance such as water, and this curvature is also calculated based on the flow rate of the jet, the flow diameter of the abrasive, the flow rate of the abrasive, and the cutting speed. Is set as appropriate.

  Next, the cutting method of the glass 2 of this embodiment using the vibration suppression body 20 is demonstrated. In addition, in the cutting method of the glass 2 shown below, the glass 2 is cut | disconnected using the water jet apparatus 10 mentioned above.

  (1) First, the glass 2 is placed on the base 12, the vibration suppressing body 20 is disposed on both sides of the cutting line L, and the vibration suppressing body 20 is fixed and attached to the base 12. As a method for attaching the vibration suppressing body 20, any fixing method may be used as long as the glass 2 does not vibrate during the cutting process. For example, as shown in FIG. 4, the vibration suppressing body 20 has an elastic member 25 disposed between the vibration suppressing body 20 and the base 12 at the front and rear end portions thereof, and then the vibration suppressing body 20 and the vibration suppressing body 20. A U-shaped fixing member 30 is attached and fixed so as to sandwich the body 20 from above and below.

  (2) Next, a jet containing abrasives is ejected from the water jet nozzle 15, the water jet nozzle 15 is moved along the cutting line L, and the glass 2 is cut.

  At this time, the jet flows on the surface of the glass 2, but due to the shape of the vibration suppressing body 20, the jet flows over the vibration suppressing body 20 without staying and flows outward of the glass 2.

  By cutting the glass substrate in this way, the flow of the jet flows without being disturbed, and furthermore, by using the vibration suppressing body 20, vibration of the glass 2 during cutting is prevented. Therefore, the thin glass 2 can be cut stably.

  As explained above, according to the cutting method of the glass 2 of this embodiment, the vibration suppression body 20 is used to prevent glass vibration during cutting, and each base body 20a of the vibration suppression body 20 is Since the curved shape is as described above, the thin glass 2 can be stably cut by flowing outward without causing the jet to stay.

  In addition, this invention is not limited to the said embodiment, A various change is possible within the range of the summary of this invention. For example, in the present embodiment, the jet mixed with the abrasive is ejected from the water jet nozzle 15, but only water may be used, and various cutting devices using a water jet can be generally applied. It is.

  Further, the glass 2 may be a glass having a shape in which two sheets are bonded together, or can be applied to a thick glass.

L cutting line 2 glass 12 base 15 water jet nozzle 20 vibration suppression body 21 ascending slope 22 descending slope 23 slope 24 bottom surface

Claims (4)

A glass cutting method for cutting glass placed on a base using a water jet along a cutting line,
Provided on both surfaces of the glass cutting line, on the surface of the glass vibration suppression body for suppressing the vibration of the glass generated during the cutting process,
The vibration suppressing body includes an inclined portion formed by continuously connecting an ascending inclined portion that rises while being inclined in a direction away from the cutting line, and a descending inclined portion that is lowered while being inclined, and a surface of the glass. A glass cutting method comprising: a flat bottom surface portion to be placed.   The glass cutting method according to claim 1, wherein the inclined portion of the vibration suppressing body is formed in a curved shape. In a glass cutting device that cuts glass along a cutting line using a water jet,
A base on which glass is placed;
A water jet nozzle disposed above the base and for jetting a water stream against the glass;
A vibration suppression body fixed on the surface of the glass, disposed on both sides of the cutting line of the glass, and for suppressing vibration of the glass during the cutting process,
The vibration suppressing body includes an inclined portion formed by continuously connecting an ascending inclined portion that rises while being inclined in a direction away from the cutting line, and a descending inclined portion that is lowered while being inclined, and a surface of the glass. A glass cutting device comprising: a flat bottom surface portion to be placed. A vibration suppressor used for a glass cutting device that cuts the glass by ejecting a water flow from a water jet nozzle along the cutting line with respect to the glass placed on the base,
The vibration suppressor is
A pair of substrates fixed on the surface of the glass and disposed on both sides of the cutting line of the glass;
The substrate is
An inclined portion formed by continuously connecting an ascending inclined portion that rises while being inclined in a direction away from the cutting line, and a descending inclined portion that descends while being inclined, and a flat shape placed on the surface of the glass And a bottom surface portion of the vibration suppressing body.

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