JPH10296600A - Chamfering method for plate type body and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To chamber a plate type body just to a specified dimension by holding the plate type body in the vertical arrangement condition and moving the edge part of the plate type body while pressing it to a rotating grinding wheel so that the grinding wheel is relatively moved along the edge part of the plate type body in this condition. SOLUTION: A glass plate 12 is conveyed while leaning against a tilting face inclined at a predetermined angle. The positioned glass plate 12 is sucked by means of a suction pad 42 in a robot 16 so as to be conveyed toward a grinding wheel device 18. While the glass plate 12 conveyed to the grinding wheel 18 by means of the robot 16 is kept in the vertical arrangement condition, the circumference part of the glass plate 12 is pressed to the upper part of a grinding wheel 26 in the grinding wheel device 18 so as to be chamfered. In this process, the grinding wheel 26 is rotationally driven by means of the rotation of an output shaft of a motor in the grinding wheel device 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for chamfering a plate, and more particularly to a method and an apparatus for chamfering an edge of a glass sheet.

[0002]

2. Description of the Related Art A conventional method for chamfering a glass sheet is as follows.
The robot holds the center of the surface of the glass plate by suction. Next, the glass plate is held horizontally by the robot, and the edge of the glass plate is chamfered by pressing the edge of the glass plate against a rotating grindstone in this state.

[0003]

However, the conventional method for chamfering a glass sheet has a drawback that the glass sheet is chamfered in a horizontal position, so that the edge of the glass sheet is chamfered at a position where it is hung down by its own weight. is there. For this reason, in the conventional chamfering method, the position of the edge of the glass plate with respect to the grindstone is chamfered by shifting from the correct position to the lower side, and it is difficult to chamfer to the dimensions.

[0004] That is, in order to realize chamfering according to dimensions, the relative position between the glass plate and the grindstone is determined in advance in view of the drooping of the edge of the glass plate, or the glass is formed so that the edge of the glass plate is hard to droop. It was necessary to take measures such as holding the plate at a position very close to the edge thereof.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method and an apparatus for chamfering a plate-like body that can be chamfered to a dimension.

[0005]

According to the present invention, in order to achieve the above object, a plate is held in a vertical position, and in this state, a grindstone relatively moves along an edge of the plate. like,
The edge of the plate is chamfered by moving the edge while pressing the edge against a rotating grindstone.

According to the present invention, the plate-like body is held vertically by the robot, and in this state, the edge of the plate-like body is pressed against the rotating grindstone to be chamfered. As described above, when the plate-shaped body is chamfered in the vertical state, the edge of the plate-shaped body is chamfered in a straight state without sagging due to its own weight. Therefore, the present invention can chamfer the plate-like body to the dimensions.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a method and an apparatus for chamfering a plate-like body according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an overall view showing a glass sheet chamfering apparatus 10 to which the plate-shaped body chamfering apparatus of the present invention is applied. The chamfering device 10 shown in FIG. 1 mainly includes a loading device 14 for the glass plate 12, a robot 16, a grindstone device 18, and an unloading belt conveyor 20.

Here, the flow of the glass plate 12 by the chamfering device 10 will be described.
Is taken and cut and folded by an operator to form a glass plate 12 having a predetermined shape (a triangular shape in the present embodiment) in a pre-process carried in by the carry-in device 14. Next, the glass plate 12 is moved by the operator into the carry-in entrance 14A of the carry-in device 14.
When placed in the, a number of transport rollers 22 of the loading device 14,
After being conveyed to the carry-out port 14B by the rotation of 22, it is positioned by the positioning device 24. Next, after the glass plate 12 is sucked and held by the robot 16,
The wafer is transported toward the grindstone device 18, and its peripheral portion is chamfered by the grindstone 26 of the grindstone device 18 in a vertically placed state. After the chamfered glass plate 12 is placed on the unloading belt conveyor 20 by the robot 16, the glass plate 12 is transported by the belt conveyor 20 to a cleaning device (not shown). The above is a series of flows of the glass plate 12 by the chamfering device 10.

FIG. 2 is a front view of the loading device 14. The carry-in device 14 shown in FIG. 1 has a large number of transport rollers 2 arranged in a horizontal line from a carry-in port 14A to a carry-out port 14B.
2, 22,... The glass plate 12 is placed on the transport rollers 22, 22.
By the counterclockwise rotation indicated by the arrow in the figure of 22 ...
It is conveyed at a predetermined speed from the carry-in port 14A to the carry-out port 14B. Are driven by being directly connected to an output shaft of a motor (not shown), for example, and the other transport rollers 22, 22 are respectively A timing belt is set between a pulley (not shown) provided on the motor and the pulley on the motor side, and is driven to rotate at the same speed.

The glass plate 12 has a predetermined angle (approximately 75
°) It is conveyed in a state of leaning against the inclined surface 14C. Therefore, the operator only leans the cut and folded glass plate 12 against the inclined surface 14C, and the glass plate 1
2 can be supplied to the loading device 14. Thereby, the glass plate 12 is required to be laid down.
The work load on the worker is reduced as compared with a device that transports the computer horizontally.

If a frictional force reducing member such as horse hair 28 or a roller is attached or provided on the inclined surface 14C, the glass plate 12 can be smoothly transported without being damaged. At the carry-out port 14B of the carry-in device 14,
A positioning device 24, a fixed reference positioning roller 30, and a switch 32 are provided. When the glass plate 12 is conveyed to the carry-out port 14B, the switch 32 is pushed by the back surface of the glass plate 12 and retreats from a contact (not shown).
The switch turns off. As a result, the motor of the transport roller 22A stops, and the transport of the glass plate 12 stops.

When the motor is stopped, the positioning device 24 is driven. The positioning device 24 has an air cylinder 34, and a pair of pressing rollers 38, 38 is rotatably provided at the tip of the rod 36 via a support plate 40. The air cylinder 34 is provided on the inclined edge 12 of the glass plate 12 with which the pressing rollers 38, 38 abut.
It is fixed at a position perpendicular to A. Therefore, when the rod 36 of the air cylinder 34 is extended, the inclined edge 12A of the glass plate 12 is pressed by the pressing rollers 38, 38, and the glass plate 12 is
8, 38 and the fixed reference positioning roller 30. Thus, the glass plate 12 is positioned at the outlet 14B.

The positioned glass plate 12 is sucked by the suction pad 42 of the robot 16 shown in FIG. In FIG. 2, when the glass plate 12 after positioning is taken out by the robot 16, the switch 32 elastically returns to the original position and turns ON, and the motor of the transfer roller 22A is driven to transfer the glass plate 12. Will be resumed. Further, the rod 36 of the air cylinder 34 is contracted, and the pressing rollers 38, 38 are retracted from the conveyance area of the glass plate 12, as shown by the two-dot chain line in the drawing. As a result, the second glass plate 12 passes below the pressing rollers 38, 38, is conveyed to the carry-out port 14B, and is positioned by the positioning device 24 or the like and is on standby.

In FIG. 1, the robot 16 controls the grinding device 1
As shown in FIGS. 3 and 4, the glass plate 12 transferred to 8 is chamfered by pressing the peripheral portion 13 against the upper portion 27 of the grindstone 26 of the grindstone device 18 in a vertically placed state. At this time, the grindstone 26 is driven to rotate in the direction of the arrow in FIG. 3 by the rotation of the output shaft 46 of the motor 44 of the grindstone device 18.
Further, the glass plate 12 is mounted on the robot arm 48 shown in FIG.
3 is rotated in the direction of the arrow in FIG. 3 by the rotation of the output shaft of the motor 50 provided at the tip of the wheel. You. Thereby, the chamfered portions 13A, 13A shown in FIG. 4 are formed on both edges of the peripheral portion 13 of the glass plate 12.

By the way, in a device for chamfering a glass plate in a lying posture, the coolant does not accumulate in the concave portion because the concave portion of the grindstone is not directed upward but is directed horizontally. Therefore, the device requires a large amount of coolant. On the other hand, in the present embodiment, as shown in FIG. 3, the coolant 54 is jetted from the nozzle 52 toward the upper part 27 of the grindstone 26 during the chamfering process. The coolant 54 stays for a short time in the concave portion of the upper part 27 of the grindstone 26. Therefore, in the present embodiment, the supply amount of the coolant can be reduced.

Incidentally, the amount of the coolant is conventionally 2
It is squirting toward the whetstone about 0-40 l / min,
Although a large amount of coolant scattered around the device, in the present embodiment, the amount is about 1/10 to 1/5 of the conventional amount,
The effect appeared sufficiently, and scattering to the surroundings was reduced. On the other hand, when chamfering a large number of glass plates, the diameter of the grindstone decreases due to wear. For this reason, it is necessary to change the predetermined movement trajectory of the glass plate according to the amount of reduction in the diameter of the grindstone. In addition, there are various forms of chamfering of the glass plate, such as thread chamfering and polishing chamfering.
Further, these may be changed depending on the part even with a single glass plate. When the glass plate is placed horizontally and the grindstone is moved along the edge of the glass plate, it is difficult to correct the above change. On the other hand, when the glass plate is placed vertically and the edge of the glass plate is moved around the grindstone, it is easy to change and correct only the vertical data of the movement trajectory by the decrease in the diameter of the grindstone. Can respond.
Furthermore, it is easy to modify the shape of the chamfer according to the portion of one glass plate.

As described above, in the present embodiment, the glass plate 12 is held vertically by the robot 16, and the peripheral portion 13 of the glass plate 12 is chamfered by pressing the peripheral portion 13 of the glass plate 12 against the rotating grindstone 26 in this posture. As a result, the peripheral portion 13 of the glass plate 12 is chamfered in a straight state without sagging due to its own weight. Therefore, in the present embodiment, the glass plate 12 can be chamfered to the dimensions.

Further, when the glass plate 12 is chamfered in a vertically placed state, the supply amount of the coolant can be reduced as described above. In the present embodiment, the glass plate 12 is applied as the plate-like body, but the present invention is not limited to this, and the present invention can be applied to chamfering of another plate-like body. Although a robot having an arm as shown is used as a moving means for transferring the glass plate 12, any means capable of moving the glass plate to a predetermined position and rotating the glass plate around a grindstone with a predetermined trajectory may be used. Various ones can be used.

[0019]

As described above, according to the apparatus for chamfering a plate-like body according to the present invention, the plate-like body is chamfered in a vertically placed state, so that the plate-like body can be chamfered to its dimensions.

[Brief description of the drawings]

FIG. 1 is an overall view of a glass sheet chamfering apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a glass sheet conveying apparatus applied to the glass sheet chamfering apparatus shown in FIG.

FIG. 3 is a front view showing a glass plate and a grindstone during a chamfering process.

FIG. 4 is an enlarged view as seen from line 4-4 in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Chamfering device 12 ... Glass plate 14 ... Loading device 16 ... Robot 18 ... Whetstone device 20 ... Belt conveyor 26 ... Whetstone

Claims (4)

[Claims] 1. A plate-like body is held vertically, and in this state, a grindstone relatively moves along an edge of the plate-like body.
A chamfering method for a plate-like body, wherein the edge is chamfered by moving the edge of the plate-like body while pressing the edge against a rotating grindstone. 2. The plate-like body is conveyed while standing upright on a slope of a loading means having a slope inclined at a predetermined angle from a vertical state, and the plate-like body transported to a carry-out port of the loading means is vertically placed by a moving means. It is characterized in that the edge of the plate is pressed against the whetstone while rotating the plate so that the whetstone relatively moves along the edge of the plate while moving the whetstone toward the whetstone while holding in a state. The method for chamfering a plate-like body according to claim 1. 3. A grindstone, rotation driving means for rotating the grindstone in a vertical plane, and holding the plate in a vertical position, and in this state, the grindstone moves along the edge of the plate. A moving means for moving the edge of the plate-shaped member so as to move while pressing the edge against the rotating grindstone; and a chamfering apparatus for the plate-shaped member. 4. The grindstone is rotatably held by a grindstone device provided with rotary drive means, and has a slope inclined at a predetermined angle from a vertical state at a stage preceding the moving means. Carrying means for transporting the plate-shaped body against the moving means in a state where the plate-shaped body is leaned is arranged,
At the carry-out port of the carrying-in means, the moving means holds the plate-like body in a vertically placed state, and the moving means moves the plate-like body, whereby the grindstone relatively moves along the edge of the plate-like body. The plate-shaped body chamfering device according to claim 3, characterized in that: