JPH0663855A - Glass plate working machine - Google Patents

Abstract

PURPOSE:To provide a glass plate grinding and polishing machine capable of efficiently grinding and polishing the peripheral edge of the glass plate by automate the adjustment of a cutting depth amount of a polishing wheel according to wear. CONSTITUTION:A glass plate grinding and polishing machine is provided with a grinding and polishing head for grinding and polishing the peripheral edge 5 of the glass plate 4. The head is provided with an electric motor 9 for rotating a grinding wheel 7 and a polishing wheel 8, and a slide device 10 for moving forward and backward the electric motor 9 relative to the peripheral edge 5 of the glass plate 4. The electric motor 9 is provided with a hollow spindle 18 having one end 16 mounted with a grinding wheel 7 and a shaft 22 spline coupled 19 with the hollow spindle 18 to be movable in the direction A and extended through the hollow spindle 18 while having one end 20 mounted with a polishing wheel 8. A shift device 23 for shifting the shaft 22 in the direction A is connected to the shaft 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass plate processing machine for grinding a peripheral edge of a glass plate and further polishing the ground peripheral edge.

[0002]

2. Description of the Related Art A glass plate folded from a raw glass plate into a predetermined shape is then ground and polished to obtain a product. Various types of glass plate processing machines that grind and polish the periphery of such a glass plate are known in the related art. For example, the periphery of a glass plate that is sandwiched between a pair of opposing belt conveyors and conveyed. Is first ground by a grinding wheel (for example, a diamond wheel), and then the periphery of the ground glass plate is ground by a grinding wheel (smoothing grindstone).

[0003]

In the conventional glass plate processing machine described above, a grinding head equipped with a grinding wheel and a polishing head equipped with a grinding wheel are arranged along a glass plate conveying path. Therefore, it requires a space for arranging the grinding head and the polishing head side by side, and has a drawback that the apparatus becomes large in size.

Further, in the conventional glass plate processing machine, the grinding head and the polishing head are moved in order to advance and retract each of the grinding head and the polishing head with respect to the glass plate so that the cutting amount between the grinding wheel and the polishing wheel is predetermined. Since a manual cutting depth setting device is individually connected to each of the heads, if the grinding wheel cutting depth is set again, it is necessary to set the grinding wheel cutting depth as well. Is extremely complicated.

Further, since the smoothing grindstone, which is a grinding wheel, polishes the portion after grinding by the grinding wheel, its material is soft and wears out so frequently that it is necessary to perform the cutting operation frequently. As described above, in the manual cutting depth setting device, this operation requires manpower and sometimes the machine must be stopped.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a small glass plate processing machine that does not take up much space.

Further, according to the present invention, it is an object of the present invention to set the cutting amount of the polishing wheel depending on the cutting amount of the grinding wheel, and in particular, to make the cutting operation of the polishing wheel simple. To provide a processing machine.

Further, according to the present invention, it is an object of the present invention to provide a glass plate processing machine capable of efficiently grinding and polishing the periphery of a glass plate by automating the cutting operation of the polishing wheel due to wear. It is in.

[0009]

According to the present invention, the above object is a glass plate processing machine equipped with a grinding and polishing head for grinding and polishing the periphery of a glass plate. An electric motor for rotating the wheel and the polishing wheel and a slide device connected to the electric motor for moving the electric motor forward and backward with respect to the peripheral edge of the glass plate are provided. A hollow spindle that is fixed to the rotor and has a grinding wheel attached to one end is spline-coupled to the hollow spindle so as to be movable in its axial direction. A polishing wheel is attached to the shaft, and a moving device for moving the shaft in the axial direction is connected to the shaft. It is achieved by the processing machine of the glass plate being.

The above object of the present invention is also achieved by the above-mentioned glass sheet processing machine connected to a slide device so that the moving device is advanced and retracted with respect to the peripheral edge of the glass sheet together with the electric motor.

Further, the above object of the present invention is achieved by the above-mentioned glass sheet processing machine, wherein the moving device is provided with a control device for automatically moving the shaft in the axial direction in accordance with the wear amount of the polishing wheel. To be done.

Further, in the glass plate grinding and polishing machine of the present invention, an elastic device for elastically supporting the shaft in the axial direction is further arranged between the shaft and a moving device for moving the shaft in the axial direction. It may have been done. Here, one preferable example of the elastic device is an air cylinder device that generates an aeroelastic force.

[0013]

In the glass plate processing machine of the present invention, the hollow spindle and the shaft are rotated by the rotation of the rotor thereof by the operation of the electric motor. By rotating the grinding wheel and the polishing wheel by these rotations, the periphery of the glass plate is ground and polished. When the slide device is operated, the grinding / polishing head including the electric motor is moved, so that the grinding wheel and the polishing wheel are moved back and forth with respect to the peripheral edge of the glass plate, and in particular, the cutting amount of the grinding wheel is set. When the moving device is actuated, the shaft is moved in the axial direction independently of the hollow spindle, so that the polishing wheel is moved back and forth with respect to the peripheral edge of the glass plate. Therefore, the polishing wheel is brought into a predetermined contact with the glass plate in accordance with the amount of wear.

The present invention will now be described based on the preferred embodiments shown in the drawings. The present invention is not limited to these specific examples.

[0015]

SPECIFIC EXAMPLE In FIGS. 1 to 8, a glass sheet processing machine 1 of the present example has a peripheral edge of a glass sheet 4 which is conveyed by being sandwiched between a pair of opposed reference belt conveyors 2 and pressing belt conveyors 3. 5. Grinding and polishing head 5
(Hereinafter referred to as the head 6), the head 6 is
An electric motor 9 for rotating the grinding wheel 7 and the polishing wheel 8 and a slide device 10 connected to the electric motor 9 for moving the electric motor 9 forward and backward with respect to the peripheral edge 5 of the glass plate 4 are provided. The motor 9 has a rotor 15
Is fixed to the rotor 15 and the grinding wheel 7 is attached to the one end 16.
Is attached to the hollow spindle 18, and the hollow spindle 18 is spline-coupled 19 so as to be movable in its axial direction, that is, the A and B directions, penetrates the hollow spindle 18, and is concentric with the grinding wheel 7 at one end 20. And a shaft 22 to which the polishing wheel 8 is attached.
Device 23 for moving the shaft in the axial direction, that is, in the A and B directions
Are connected via an elastic device 24 that elastically supports the shaft 22 in the A and B directions.

The reference belt conveyor 2 has an endless belt 32 stretched between a driving drum 31 rotatably supported by a frame 30 and a driven drum (not shown). Also has a belt 34 hung between a driving drum 33 rotatably supported by the frame 30 and a driven drum (not shown),
The drive drums 31 and 33 are connected to an output rotation shaft of an electric motor (not shown), and the rotation of the output rotation shaft due to the operation of the electric motor causes the drive drums 31 and 33 to rotate synchronously, thereby causing the belts 32 and 34 to rotate. Is driven,
As a result, the glass plate 4 sandwiched between the belts 32 and 34
Are conveyed in a direction orthogonal to the plane of the paper of FIG. Since such a transporting device for the glass plate 4 is known, detailed description thereof will be omitted.

The rotor 15 of the electric motor 9 is arranged in a stator 36 fixed to a housing 35 of the electric motor 9, and the hollow spindle 1 attached to the rotor 15 is installed.
8 is supported by the housing 35 via bearings 37 and 38 so as to be rotatable in the C direction around its axis, and the rotation of the rotor 15 also rotates the hollow spindle 18 in the C direction. It is supposed to be done. The shaft 22 that is splined to the hollow spindle 18 is
When the hollow spindle 18 rotates in the C direction, it also rotates in the same direction.

The slide device 10 includes a base 40 to which the housing 35 of the electric motor 9 is attached, a slide base 41 to which the base 40 is attached, and a slide base 41. And a rail member 42 movably guiding and supporting in the B direction, and a feed screw 4 rotatably supported at one end of the rail member 42 via a bearing 43.
4, a nut 45 screwed to the feed screw 44 is fixed to the lower surface of the slide base 41 by a screw 46, and a knob 47 is attached to one end of the feed screw 44. When the knob 47 is rotated to rotate the feed screw 44 in the same manner, the nut 45 screwed onto the feed screw 44 is moved in the A or B direction, and the slide base 41 is guided by the rail member 42 by this movement, and the nut A is also rotated. Alternatively, it is moved in the B direction, so that the base 40 and thus the electric motor 9 are also moved in the A or B direction, that is, moved forward and backward with respect to the peripheral edge 5 of the glass plate 4. Edge 5 of glass plate 4 of electric motor 9
The forward / backward movement determines the cutting amount of the grinding wheel 7 and the polishing wheel 8 with respect to the peripheral edge 5 of the glass plate 4. That is, by rotating the knob 47, the grinding wheel 7
Also, the cut amount of the polishing wheel 8 with respect to the peripheral edge 5 of the glass plate 4 can be set. The rail member 42
Are supported by the frame 30 at a predetermined angle via brackets 48.

A moving device 23 for moving the shaft 22 in the A and B directions is fitted with a slide base 51 and a slide base 51, and a rail member for guiding and supporting the slide base 51 so as to be movable in the A and B directions. 52 and the rail member 52
And a feed screw 54 rotatably supported via a bearing 53 at one end of the slide base 51.
A nut 55 screwed to the feed screw 54 is fixed,
The output rotary shaft 5 of the electric motor 56 is attached to one end of the feed screw 54.
7 are connected via a coupling. When the electric motor 56 is operated and the output rotary shaft 57 thereof is rotated,
The feed screw 54 is also rotated in the same manner, and by the rotation of the feed screw 54, the nut 55 screwed onto the feed screw 54 is moved in the A or B direction, and the slide base 51 is guided by the rail member 52 by this movement, and It is moved in the A or B direction. The rail member 52 and the electric motor 56 are provided on the base 40. Therefore, in this example, when the entire electric motor 9 is moved in the A or B direction by the operation of the knob 47, the moving device 23 also moves in the A or B direction. It is designed to be moved in the B direction. That is, the moving device 23 of the present example is connected to the slide device 10 so as to move forward and backward with respect to the peripheral edge 5 of the glass plate 4 together with the electric motor 9.

Further, the moving device 23 of the present example is equipped with a control device for automatically moving the shaft 22 in the direction A in accordance with the amount of wear of the polishing wheel 8.
As shown in FIG. 3, the proximity switches 61 and 62 attached to the base 40, the proximity switch 63 attached to the elastic device 24, and the detection signals from the proximity switches 61, 62, and 63 are electrically driven as described later. And a control circuit (not shown) for controlling the operation of the motor 56. The proximity switch 61 detects the arrival of the detection piece 64 attached to the slide base 51 and outputs a signal indicating the return of the slide base 51 to the initial position, and the proximity switch 62 detects the arrival of the detection piece 64. Then, the proximity switch 63 detects the arrival of the detection piece 66 attached to the cylinder 65 and outputs the signal indicating the usage limit of the polishing wheel 8, in other words, the amount of wear of the polishing wheel 8 above a certain level. Outputs a signal indicating the operating limit of.

The elastic device 24 is an air cylinder device in this example, and both ends of this air cylinder device are bases 7.
1, a piston rod 72 attached to both ends, the above-mentioned cylinder 65 through which the piston rod 72 penetrates, and a piston (not shown) arranged in the cylinder 65 and fixed to the piston rod 72, In this air cylinder device, high pressure air is supplied to and discharged from the cylinder 65 so that the cylinder 65 is guided by the piston rod 72 and slides on the base 71 to move in the A or B direction. The base 71 is attached to the slide table 51, and is moved in the same direction as the slide table 51 moves in the A or B direction. Further, a solenoid valve (not shown) is connected to the elastic device 24, and this solenoid valve will be described later by a signal from a proximity switch (not shown) that detects arrival of the glass plate 4 to the polishing wheel 8. Thus, the supply / discharge of high pressure air to / from the cylinder 65 is controlled.

The other end 81 of the shaft 22 having the grinding wheel 8 attached to one end 20 projects out of the housing 35 and is rotatably supported by the cylinder 65 via a bearing 82 and in the A or B direction of the cylinder 65. Is connected to the cylinder 65 so as to move in the same direction as the above movement.

The glass plate processing machine 1 of the present example formed as described above operates as follows. When the polishing wheel 8 is exhausted and a new polishing wheel 8 is attached to the one end 20 of the shaft 22, the cylinder 65 moves to the position shown in FIG.
The proximity switch 61 is moved to the retracted position where the detection piece 64 is detected, as shown in FIG.

First, the knob 4 is used to adjust and set the cut amount of the glass plate 4 with respect to the peripheral edge 5 by the grinding wheel 7.
Rotate 7. The rotation of the knob 47 causes the feed screw 44 to rotate in the same manner. As a result, the slide base 41 is moved in the A direction, and this movement of the slide base 41 also moves the base 40, and thus the electric motor 9 in the A direction. As a result, the grinding wheel 7 attached to one end of the hollow spindle 18 of the electric motor 9 is also moved in the A direction, and the cutting amount of the grinding wheel 7 with respect to the peripheral edge 5 of the glass plate 4 is adjusted and set.

Next, when the electric motor 9 is operated and the rotor 15 thereof is rotated, the hollow spindle 18 is rotated. The rotation of the hollow spindle 18 also rotates the shaft 22 via the spline mechanism 19 as a result, so that the grinding wheel 7 and the polishing wheel 8 attached to one end of each of the shafts 22 are also rotated about their axes. On the other hand, an electric motor (not shown) is activated to drive the drive drum 31.
And 33 and a driven drum (not shown) are rotated to drive the belts 32 and 34. Running belts 32 and 3
The glass plate 4 inserted between one end of the glass plate 4 and sandwiched between the four is conveyed along with the running of the belts 32 and 34 in the direction orthogonal to the paper surface of FIG. With this transportation, the glass plate 4
When the peripheral edge 5 of the abuts the rotating grinding wheel 7,
The grinding wheel 7 grinds the peripheral edge 5 of the glass plate 4 by its rotation with the previously set cutting amount, and performs the necessary chamfering grinding on the peripheral edge 5, for example.

When the glass plate 4 is further conveyed and reaches the polishing wheel 8, a solenoid valve is operated by a detection signal from a proximity switch which detects this, and high pressure air is supplied to and discharged from the elastic device 24 which is an air cylinder device. It This elastic device 24
When the cylinder 65 is moved in the direction A by supplying high-pressure air to the cylinder 65, the shaft 22 connected to the cylinder 65 via the bearing 82 is also moved in the same direction, and this movement of the shaft 22 causes the grinding wheel 8 to grind. The wheel 7 is advanced so as to come into contact with the peripheral edge 5 of the glass plate 4 chamfered by the wheel 7 with a predetermined aeroelastic force. When the peripheral edge 5 of the glass plate 4 chamfered by the grinding wheel 7 comes into contact with the rotating polishing wheel 8, the polishing wheel 8 polishes the peripheral edge 5 after grinding and polishes it. During the polishing, the polishing wheel 8 has the elastic device 2
It is supported by 4 in the air float state under a constant air pressure.

After the glass plate 4 has passed the polishing wheel 8 after polishing, the electromagnetic valve is again actuated by the detection signal from the proximity switch for detecting the high pressure air in the elastic device 24 which is an air cylinder device. Conversely, the cylinder 65 is moved in the B direction so that the cylinder 65 is fed and discharged so that the polishing wheel 8 is retracted.

Next, when a new glass plate 4 is conveyed again, the glass plate processing machine 1 repeats the above-mentioned operation to chamfer the peripheral edge 5 and form polished glass plates one after another.

Then, when the polishing wheel 8 is consumed by polishing the glass plate 4, the amount of advance of the cylinder 65 in the direction A increases, and the proximity switch 63 detects the proximity of the detection piece 66 and outputs this detection signal. The electric motor 56 is operated, the feed screw 54 is rotated by a certain amount, and the slide base 51 is advanced in the direction A by a certain amount. By the forward movement of the slide base 51, the proximity of the detection piece 66 to the proximity switch 63 is released, and the cylinder 65 is set again to a position where the polishing wheel 8 contacts the peripheral edge 5 of the glass plate 4 with a predetermined aeroelastic force. To be done. The above operation is performed every time a certain amount of the polishing wheel 8 is consumed.
It is advanced in the A direction corresponding to the consumption of.

When the polishing wheel 8 is further consumed and is consumed to the extent that it cannot be used for polishing as shown in FIG. 8, the slide base 51 is advanced to a position where the detection piece 64 is detected by the proximity switch 62. . When the slide base 51 is advanced to this position, the proximity switch 62 causes the detection piece 64 to move.
The arrival of the signal is output. As a result, the electric motor 56 is operated in the opposite manner, and as a result, the feed screw 54 is also rotated in the reverse direction, the slide base 51 is retracted in the B direction, and when the proximity switch 61 detects the arrival of the detection piece 64 in this retraction. Proximity switch 6 showing it
The detection signal from 1 stops the operation of the electric motor 56. The above work can be repeated by replacing the polishing wheel 8 with a new one after stopping the electric motor 56.

As described above, in the glass plate processing machine 1,
The shaft 22 connected by the spline connection 19 is mounted in the hollow spindle 18 fixed to the rotor 15, and the grinding wheel 7 and the polishing wheel 8 are attached to one ends of the hollow spindle 18 and the shaft 22, respectively. The space can be reduced and the size can be reduced as compared with the case where the wheel and the polishing wheel are arranged side by side. Further, according to the glass plate processing machine 1, the moving device 23 is mounted on the base 40.
Since the elastic device 24 is provided, the cutting operation of the polishing wheel 8 can be performed depending on the cutting amount of the grinding wheel 7 by the rotation of the knob 47, and the cutting operation of the polishing wheel 8 by the moving device 23 is simple. Can be transformed. Further, according to the glass plate processing machine 1, the moving device 23
As a result, the cylinder 65 is automatically moved to the optimum position in response to the wear of the polishing wheel 8, so that the polishing wheel 8 can always be brought into contact with the glass plate 4 by air float with a predetermined aeroelastic force. The operator does not need to manually set the air float state in response to the wear of the polishing wheel 8, and the periphery of the glass plate can be efficiently ground and polished.

[0032]

As described above, according to the present invention, the hollow spindle fixed to the rotor and having the grinding wheel attached at one end is spline-coupled to the hollow spindle so as to be movable in the axial direction thereof, and Since the head has a shaft that penetrates the hollow spindle and has a grinding wheel and a grinding wheel mounted concentrically at one end, a smaller space can be achieved compared to the case where the grinding wheel and the grinding wheel are arranged side by side. Can be small.

Further, in the glass plate processing machine of the present invention, which is connected to the slide device so that the moving device moves forward and backward with respect to the peripheral edge of the glass plate together with the electric motor, the grinding is performed depending on the cutting amount of the grinding wheel. A wheel cutting operation can be performed, thus reducing the need to change the grinding wheel cutting depth in response to a change in the grinding wheel cutting depth.

Further, in the glass sheet processing machine of the present invention, in which the moving device is equipped with a control device for automatically moving the shaft in the axial direction in accordance with the amount of abrasion of the polishing wheel, the abrasion of the polishing wheel is dealt with. Therefore, the operator does not need to manually set the cut amount, and the periphery of the glass plate can be efficiently ground and polished.

Further, the glass plate processing machine of the present invention comprises an elastic device for elastically supporting the shaft in the axial direction between the shaft and a moving device for moving the shaft in the axial direction. In some cases, the elastic force, in other words, in one example, the grinding wheel can be pressed against the glass plate in the air float state to perform the grinding operation, resulting in a smooth grinding wheel that corresponds to the shape of the grinding part. It can be moved, which can result in a good polished surface.

[Brief description of drawings]

FIG. 1 is a side view illustrating a preferred embodiment of the present invention.

FIG. 2 is a side sectional view of the specific example shown in FIG.

3 is a partially enlarged explanatory view of the specific example shown in FIG. 1. FIG.

FIG. 4 is a side sectional view of the partially enlarged portion shown in FIG.

5 is a plan view of a partially enlarged portion shown in FIG.

6 is a plan cross-sectional view of a partially enlarged portion shown in FIG.

7 is a partial plan view of the partially enlarged portion shown in FIG.

FIG. 8 is an operation explanatory diagram of the partially enlarged portion shown in FIG. 3;

[Explanation of symbols]

 1 Glass Plate Grinding and Polishing Machine 2, 3 Belt Conveyor 4 Glass Plate 5 Edge 6 Grinding and Polishing Head 7 Grinding Wheel 8 Polishing Wheel 9 Electric Motor 10 Sliding Device 15 Rotor 18 Hollow Spindle 19 Spline Coupling 22 Shaft 23 Moving Device 24 Elastic device

Claims (5)

[Claims] 1. A grinding method for grinding and polishing a peripheral edge of a glass plate,
In a glass plate processing machine equipped with a polishing head, the grinding and polishing head is connected to an electric motor for rotating the grinding wheel and the polishing wheel, and the electric motor. The electric motor includes a rotor, a hollow spindle fixed to the rotor and having a grinding wheel attached to one end thereof, and the hollow spindle is movable in the axial direction thereof. Splined like
A glass plate that penetrates the hollow spindle and has a shaft on one end of which a grinding wheel is concentrically attached to the grinding wheel, and a moving device connected to the shaft for moving the shaft in the axial direction. Processing machine. 2. The glass plate processing machine according to claim 1, wherein the moving device is connected to the slide device so as to be moved back and forth with respect to the peripheral edge of the glass plate together with the electric motor. 3. The glass plate processing machine according to claim 1, wherein the moving device includes a control device that automatically moves the shaft in the axial direction in accordance with the amount of abrasion of the polishing wheel. 4. The elastic device for elastically supporting the shaft in the axial direction is further arranged between the shaft and the moving device for moving the shaft in the axial direction. A machine for processing a glass plate according to one item. 5. The glass sheet processing machine according to claim 4, wherein the elastic device is an air cylinder device.