JPH05269699A - Piercing method and device for glass plate - Google Patents

Abstract

PURPOSE:To easily and quickly perform resetting and adjustment for a glass plate caused by alteration of a piercing position by providing a semi-automatic type piercing device constructed so that a positioning means making a peculiar angle to a general purpose drill unit is provided on an inclined surface of a work bench and a glass plate is fixed to a vertically provided set table under a light pressing force. CONSTITUTION:A glass plate is pierced by a pair of drill units 7, 7' disposed on right and left sides without reversing the glass plate, and a set table 11 for positioning and supporting the drill units 7, 7' and the glass plate is disposed on an inclined surface 1. Thus, handling for a grinding fluid is facilitated. Further, a positioning means for stoppers 9, 9' intersecting perpendicularly to each other is attached to the set table 11 according to an angle of the inclined surface 1, whereby the glass plate is set quickly and the close contact of the glass plate with the stoppers 9, 9' is enhanced by jogging of a drill or the like to prevent misregistration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for forming a through hole in a thin glass sheet.

[0002]

2. Description of the Related Art Various punching devices for glass plates by mechanical processing have been proposed, for example, Japanese Patent Laid-Open No. 63-15.
In Japanese Patent No. 6698, a drilling tool having a metal-bonded grindstone fixed to its tip is rotated by a rotating body, and is vertically reciprocated by a reciprocating hydraulic cylinder while being reciprocally moved at a high speed in the axial direction while applying a grinding liquid. A one-way system is disclosed in which one of the glass plates is penetrated by a drilling method of a hard and brittle material for drilling a workpiece, and a two-way system from both sides of the glass plate is disclosed in Japanese Utility Model Publication No. 52-5.
In Japanese Patent No. 3741, a worktable for supporting a part other than a hole to set a brittle plate-like body cut into a predetermined shape at a predetermined position, and a surface of the worktable near the worktable. Vertically provided stanchions, and the tips of the stanchions are located above and below the work table, rotatable about the stanchions, and freely movable back and forth on a plane parallel to the work table upper surface. A U-shaped arm attached to the column, a means for fixing the rotation and the forward / backward movement of the U-shaped arm, and a drill blade on the same axis at both ends of the U-shaped arm. A brittle plate punching device including a drill unit attached as described above is disclosed. All of them are vertical-type dedicated devices with a plate thickness of 3 or 4 mm or more and a large drilling diameter. There are many cases where a small precision tabletop drilling machine for ironworking is used for drilling small diameters. .

[0003]

Problems to be Solved by the Invention JP-A-63-156
698 discloses a one-way system in which a hole is drilled from one side, and therefore, when the drill penetrates through the hole, the peripheral edge of the hole is chipped. If switching to a two-way system from both sides, the glass plate has a thickness of 2 from one side. There is a drawback that it takes time to set the inside out of the glass plate because it is pierced by 3/3, and in the two-way method for preventing chipping described in Japanese Utility Model Publication No. 52-53741, one of the drill units is a workbench. Since it is arranged below, it is difficult to replace and adjust the drill unit, and in addition, it causes a failure due to scattering of grinding dust and grinding water, and it is complicated to wash the grinding residue on the workbench for each set. There is a drawback that it requires work, and the one using a small precision tabletop drilling machine for ironworking has a problem common to the above because it is a one-way system.

[0004]

[Means for Solving the Problems] A two-way method with less occurrence of piercing defects is adopted, and a square glass plate is formed along the inclined surface with a downward slope forward for the purpose of labor saving by reducing the work procedure. A method of punching a glass plate that is vertically supported and can be drilled with a pair of advancing and retracting drills along the horizontal axis from the left and right of the surface, and the left and right of a work table with a slope inclined downward to the front. A pair of drill units, which are seated on and equipped with forward and backward drills along horizontal horizontal axes,
Positioning of a rectangular glass plate that has a hole through which the drill is inserted in the middle of the drill unit and that is composed of a lower side stopper that is parallel to the inclined surface and that can move up and down, and a side side stopper that is orthogonal to the lower side stopper and can move back and forth. Attached means,
A set table that supports one surface of the glass plate and hangs down the inclined surface, a pair of nozzles that spray a grinding liquid on both sides of the hole, and the drill that presses the peripheral edge of the hole through the glass plate. (EN) Provided is a glass plate punching device comprising a contacting cylinder of a pressing means through which one side is inserted.

[0005]

The glass plate is punched by the pair of drill units arranged on the left and right without being turned upside down, and the set base for positioning and supporting the drill unit and the glass plate is arranged on the inclined surface. Process becomes easier, and the orthogonal stopper positioning means is attached to the set table according to the angle of the inclined surface, so that the glass plate can be set quickly, and the close contact with the stopper can be improved by fine movement of the drill etc. Prevents misalignment as well as pressing.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 shows an overall perspective view of the device with a part cut away,
FIG. 2 is a transverse cross-sectional view of a part of the set table showing the periphery of the hole, and FIG. 3 is a front view of the entire assembly.

On a workbench 2 provided with an inclined surface 1 having a downward slope toward the front, drill chucks 3 and 3'which are capable of advancing and retracting and rotating along a horizontal axis line in the left and right directions are provided at their tips. Drills 4 and 4 '(internal wheel with diamond electrodeposition shaft) are attached to the chuck, and drills 4 and 4'on the rear end.
The spindle motor 6 for controlling the cutting depth of the drill, adjusting the cutting speed of the drill, setting the operating position of the drill, confirming the retracted position, and other control mechanisms 5, 5 '.
6 '(manufactured by Kira Sangyo Co., Ltd.) seated on the left and right, and a pair of drill units 7, 7'supporting one side of a rectangular glass plate 8 at an intermediate position of the drill units, and one side thereof A stopper 9 for abutting and positioning the lower side
9'positioning means is additionally provided, and the drill 4 penetrates at the left and right axes to the drill unit 7'side and the expanded hole portion 1 is formed.
FIG. 2 shows the periphery of the hole 10 between the set table 11 provided with 0 and suspended on the inclined surface 1 and the one of the drill units 7 on the side of the stoppers 9 and 9 ′ attached to the set table. The punching device 13 has a main structure such as a pressing means for pressing the glass plate 8 to the setting table 11 by pressing it through a cylindrical pressure contact tube 12.

On the left side of the setting table 11 supporting the glass plate 8, a plurality of rubber plates 14 arranged in a vertical groove are provided.
The pressure contact pipe 1 having the same thickness and the same quality as the rubber plate is also provided on the periphery of the hole 10.
A semi-circular pressure plate 15 having the same size as the inner and outer circles 2 is attached, and stoppers 9 and 9'of positioning means are attached to the front side and the lower side. A stopper 9 ′ for locking the lower side of the glass plate 8 with a partially cut L-shaped support surface rotates a handle 16 ′ which is arranged on the back side of the set table 11 in parallel with the inclined surface 1 of the work table. Is moved up and down along the guide 17 'by a screw shaft (not shown),
The stopper 9 that comes into contact with one end surface of the glass plate 8 is also rotated by the rotation of the handle 16 to move in the front-rear direction by rotating the screw shaft 28, but the handles 16, 16 'use ball screws with little backlash. , Digital scales 18 and 1 for displaying the movement of stoppers 9 and 9 '
8'is installed.

The pressing means for pressing and fixing the glass plate 8 of the setting table 11 with the pressure contact tube 12 is a column 19 standing on the inclined surface 1.
An arm plate 21 is laterally provided at the upper end of the cylinder 20 that can move back and forth in the left-right direction, and a hole through which the drill 4 can be inserted is provided at one end of the arm plate 21.
2 is attached, and on the left side of the arm plate 21 on the opposite side of the pressure contact cylinder, a transparent transparent scattering cover 22 which is a cylinder through which the drill chuck 3 is inserted according to the axis of the pressure contact cylinder 12 is detachably attached.
The nozzle 20 is attached to the upper part of the outer surface of the scattering cover by a flexible tube (not shown) through a pipe 23 and a nozzle 24 for spraying a grinding fluid is fixed.
However, a transparent cylindrical scattering cover 22 'and a nozzle 24' are arranged and fixed also on the right side of the set table 11 which is the opposite side to the axis of the hole 10.

An operation panel 25 provided with various operation switches is attached to the legs of the workbench 2, and a foot switch 26 for instructing the start of the drawing operation from the operation panel is provided. The operation of the present invention will be described below.

First, the drill unit 7 is manually switched by the operation switch of the operation panel 25, the glass plate 8 is placed on the setting table 11 via the stoppers 9 and 9 ', and the cylinder 20 of the pressing means is operated to move the arm plate 21. The glass plate 8 is pressed and fixed by the contact pressure cylinder 12 protruding rightward through the nozzle 24.
When the spindle motor 6 is actuated by further injecting the grinding fluid, the spindle of the motor is run at high speed by the control mechanism 5 while rotating to the right, and 2-3 mm before the glass plate 8 fixed to the set table 11 is advanced in advance. With the hammer set to No. 2 and a slight speed running without causing chipping, about 2/3 of the perforation of the glass plate 8 is cut and punched, and then leftward at a high speed to retreat and stop, the cylinder 20 is released, and the glass plate 8 is set.
1, and the dimensional difference from the set position is calculated from the punching position punched in the glass plate 8 to calculate the digital scale 18, 1
8'is set as a zero point, and handle 16 and 1 are set to the above-mentioned size difference.
6'is manually rotated to position the stoppers 9 and 9 ', and the glass plate 8 is placed on the stopper and the set base 11 again in the same manner as described above, and after pressing and fixing with the contact pressure cylinder 12, the grinding fluid is jetted from the nozzle 24'. Then, the spindle motor 6'of the drill unit 7'is operated by performing the same operation as the control mechanism 5'mounted on the glass plate 8 from the right side of the glass plate 8 and checking the position and processing state of the hole. If there is no abnormality, the positioning of the glass plate 8 and the setting of the processing conditions for the drill units 7, 7'are completed.

When the operation switch of the operation panel 25 is automatically switched, the glass plate 8 is positioned on the set table 11 and the foot switch 26 is depressed, the cylinder 20 of the pressing means is activated to contact the glass plate 8 on the set table 11. The spindle motor 7 rotates in conjunction with pressing and fixing with the pressure cylinder 12, the spindle switches from the high speed forward to the right direction to the fine speed forward, cuts the glass plate 8, and when it reaches a predetermined position, it retreats to the left at high speed and predetermined. Stop at the position. Subsequently, when the spindle motor 7'operates in the same manner as described above, penetrates, retreats at a high speed in the final right direction, and stops at a predetermined position, the cylinder 20 of the pressing means is released, and the glass plate 8 is manually removed from the setting table 11. , A new glass plate 8 is repeatedly placed on the set table 11, but the above-mentioned operation is operated in conjunction with the incorporation of a timer in the sequence, and the glass plate 8 is positioned to the stoppers 9 and 9'and the foot switch 26 A series of operations of pressing and fixing and starting drilling are performed by depressing.

A set table 11 is vertically provided on the inclined surface 1,
Positioning means for moving the stopper 9'up and down in parallel with the inclined surface 1 and for moving the stopper 9 orthogonally to the stopper 9'and movable in the front-rear direction is a glass plate 8 gravity acting in the stopper 9, 9'direction. Positioning set becomes easy by force, and the glass plate 8 that is in close contact with the stoppers 9 and 9 '
Is applied to the stopper 9 side by fine vibration during grinding and is not separated from the stopper 9 in the in-plane direction of the glass plate, while the glass plate 8 is fixed in the out-of-plane direction by the drill 4 '. If the pressure contact plate 15 attached to the vicinity of the hole 10 is pressed by the elastic pressure contact tube 12 through the glass plate 8 with a pressing force that can withstand the pressure, the bending of the thin glass plate 8 is minimized. Therefore, there is no trouble such as cracking, and the positioning and fixing are constant, and the inclined surface 1
Since the drill units 7 and 7'are seated and the set table 11 is hung vertically, it is possible to easily collect the grinding liquid and grinding debris and to eliminate the need for shower washing every time. The glass plate 8 and the spindle motors 6 and 6 ', especially control There is no adhesion of grinding fluid or debris to the mechanism 5 or 5 ', which leads to prevention of scratches and preventive maintenance to the machine. In combination with the preset drilling speed and the operating procedure, there is no damage or chipping during drilling. It can be resolved.

[0014]

The present invention is a semi-automatic type in which a general-purpose drill unit is provided on the inclined surface of a work table with positioning means for forming a unique angle, and a glass plate is fixed to a vertical set table with a slight pressing force. The punching device makes it easy to change and adjust the glass plate according to the change of the drilling position, and can save labor such as speed, and continuous drilling is possible even for inexperienced workers. Therefore, the number of cleanings of the device is greatly reduced by preventing the scattering of grinding fluid and grinding dust and by easy collection, improving the yield such as eliminating defective products such as hooks and chips,
In addition, attachment / detachment and maintenance of the device become easy.

[Brief description of drawings]

FIG. 1 shows an overall perspective view of the device with a part cut away.

FIG. 2 is a cross-sectional view of a part of the set table showing the periphery of a hole, with a part cut away.

FIG. 3 shows a front view of the overall assembly of the device according to the invention.

[Explanation of symbols]

 1 ... Inclined surface 2 ... Work table 4, 4 '... Drill 7, 7' ... Drill unit 8 ... Glass plate 9, 9 '... Stopper 10 ... ..Hole 11 ... Set base 12 ... Pressure cylinder 13 ... Punching device 24, 24'-Nozzle

Claims (2)

[Claims] 1. A rectangular glass plate is vertically supported along a downwardly sloping surface, and a pair of drills for advancing and retreating are provided along the horizontal axis from the left and right of the surface. A method for perforating a glass plate characterized. 2. A pair of drill units, which are seated on the left and right of a workbench having an inclined surface that descends forward and are equipped with forward and backward drills along horizontal left and right axes, and the drill is provided in the middle of the drill units. A rectangular glass plate positioning means, which is provided with a hole portion to be inserted and is composed of a lower side stopper that is parallel to the inclined surface and is movable up and down, and a side side stopper that is orthogonal to the lower side stopper and is movable back and forth, is provided. A set table that supports one surface and hangs down from the inclined surface, a pair of nozzles that inject grinding fluid to both sides of the hole, and one of the drills that presses the peripheral edge of the hole through the glass plate. And a pressurizing cylinder of the pressing means.