JPH06279041A - Device for cutting plate glass - Google Patents

Abstract

PURPOSE:To provide a device for cutting plate glass capable of relatively moving a cutter head against plate glass at high speed and accurately along a shape to be cut, simply maintaining and adjusting in a short time, improving operation efficiency and making high-quality processed articles. CONSTITUTION:A device 1 for cutting plate glass supports a bride frame 4, equipped with a means 3 of directly moving in the X-axis direction for directly transporting a cutter head 2 in the X-axis direction, movably to both sides 5 and 6 and in the Y direction, ball screw nuts 7 and 8 are rotatably fitted to both the sides 5 and 6 of the bride frame 4, the ball screw nuts 7 and 8 are screwed to ball screw nuts 9 and 10 extending in the Y direction and a means 11 of directly moving in the Y direction common to the ball screw nuts 7 and 8 is installed to synchronously rotate the ball screw nuts 7 and 8 and to directly move the bridge frame 4 in the Y direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass plate cutting device.

[0002]

2. Description of the Related Art In a conventional glass plate cutting apparatus,
The screw shaft is connected to the moving table on which the cutter head is mounted via nuts, and this screw shaft is connected to the output rotation shaft of the electric motor via pulleys, belts, etc., and the screw shaft is rotated by the rotation of the output shaft of the electric motor. Is rotated to move the moving table in, for example, the X direction, the screw shaft is connected to the head on which the glass plate is mounted via a nut, and the screw shaft is connected to the output rotation shaft of the electric motor via a pulley, a belt, or the like. And the output shaft of the electric motor rotates to rotate the screw shaft to move the head to, for example, Y.
The cutter wheel of the cutter head is moved relative to the glass plate along the shape to be cut.

[0003]

By the way, in the conventional glass plate cutting apparatus as described above, since a relatively long screw shaft is rotated, a large bending vibration easily occurs on the screw shaft in a critical speed range. Therefore, it is difficult to rotate the screw shaft at a high speed to move the moving base and the cutter head at a high speed to improve the work efficiency.

Therefore, the present applicant has previously proposed a glass plate cutting device which can solve such a problem (Japanese Patent Application No. 4-
124348). In a specific example of the glass plate cutting device according to this proposal, ball screw nuts rotatably attached to both sides of a bridge frame movably supported in the Y direction are respectively attached to the ball screw nuts. The bridge frame is moved in the Y direction by being rotated by an electric motor provided corresponding to the above. However, according to the glass plate cutting device of this example, the pair of ball screw nuts are rotated in synchronization with each other. Has
It is required to operate the electric motors in synchronization.
However, the synchronous operation of the electric motor requires a lot of time and work for selection of the electric motor, maintenance and adjustment of the electric circuit, and is not necessarily satisfactory in this respect.

The present invention has been made in view of the above points, and an object thereof is to move a cutter head relative to a glass plate along a shape to be cut at high speed and accurately. In addition to the above, it is an object of the present invention to provide a glass plate cutting device capable of easily performing maintenance and adjustment in a short time, thereby improving work efficiency and obtaining a high-quality processed product.

[0006]

According to the present invention, the object is to support a bridge frame provided with X-direction linearly moving means for linearly moving the cutter head in the X-axis direction so as to be movable on both sides in the Y-direction, Ball screw nuts are rotatably attached to both sides of this bridge frame, and each ball screw nut is screwed into each of a pair of ball screws extending in the Y direction, and both ball screw nuts are rotated in synchronization to form a bridge frame. This is achieved by a glass plate cutting device in which a common Y-direction linear moving means is provided for both ball screw nuts so as to make a linear movement in the Y-direction.

According to the present invention, the other object is to dispose another ball screw extending in the X direction on the bridge frame and to freely rotate the other ball screw nut screwed to the other ball screw to the X direction linear movement means. It is achieved by the above-mentioned glass plate cutting device which is mounted on the glass plate, and the other ball screw nut is rotated by the X-direction linear movement means to directly move the cutter head in the X-direction.

Further, according to the present invention, the above object is to support a bridge frame for supporting a cutter head so as to be movable in the Y direction on both sides, and to attach ball screw nuts to the both sides of the bridge frame so as to be rotatable, respectively. Each ball screw nut is screwed onto each of a pair of ball screws that extend in the direction of Y, and both ball screw nuts are synchronously rotated to directly move the bridge frame in the Y direction. It is also achieved by a glass plate cutting device provided with a direction linearly moving means.

[0009]

In the glass sheet cutting device of the present invention, both ball screw nuts are synchronously rotated by the Y-direction linear moving means common to both ball screw nuts, whereby the bridge frame is moved in the Y direction. . In one aspect of the present invention, the cutter head is directly moved in the X direction by the X direction moving means. Therefore, the cutter head is moved at a high speed along the shape of the glass plate to be cut in the XY plane.

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

[0011]

[Specific Example] In the drawings, a glass plate cutting device 1 of this example
Is a bridge frame 4 provided with an X-direction linearly moving means 3 for linearly moving the cutter head 2 in the X-axis direction.
It is supported so that it can move in any direction, and both sides 5 of the bridge frame 4
Ball screw nuts 7 and 8 are rotatably attached to the ball screw nuts 7 and 8, respectively, and the ball screw nuts 7 and 8 are respectively screwed into a pair of ball screws 9 and 10 extending in the Y direction. In order to rotate the bridge frame 4 in the Y direction in synchronism with each other, the Y-direction translation means 1 common to both ball screw nuts 7 and 8 is used.
1 is provided, another ball screw 12 extending in the X direction is arranged on the bridge frame 4, and another ball screw nut 13 screwed on the ball screw 12 is rotatably attached to the X direction direct-acting means 3. , The X-direction linear movement means 3 rotates the ball screw nut 13 to linearly move the cutter head 2 in the X-direction.

The cutter head 2 includes an air cylinder device 22 attached to a bracket 21 and a cutter wheel 2.
3 and a cutter block 24 attached to the piston rod of the air cylinder device 22. When the high pressure air is supplied to and discharged from the air cylinder device 22, the cutter block 24 is moved up and down to cut the cutter. The wheel 23 is moved back and forth with respect to the surface of the glass plate 25. The cutter wheel 23 is pressed against the surface of the glass plate 25 by the air pressure of the air cylinder device 22, so that the glass plate 2
A cutting line (folding line) C is attached to 5.

Sliders 31 and 32 are attached to the lower surfaces of both ends 5 and 6 of the bridge frame 4, and the slider 31 is a rail extending in the Y direction and attached to a bed 33 on which the glass plate 25 is placed. 34 is slidably fitted in the Y direction, and the slider 32 is also attached to the bed 3
The rail 35 is slidably fitted in the Y-direction and attached to the rail 35 extending in the Y-direction. Thus, the bridge frame 4 is guided by the rails 34 and 35 to be movable in the Y-direction.

The ball screws 9 and 10 are fixed to and supported by the bed 33 via supporting members 37 at both ends thereof, and the ball screw nuts 7 and 8 screwed into the ball screws 9 and 10 are formed in the same manner. The ball screw nut 7 will be described below. The ball screw nut 7 includes a nut body 44 rotatably mounted inside a cylindrical member 42 attached to the bridge frame 4 with bolts 41 via balls 43, and holes 45 and 45 formed in the nut body 44. And a large number of steel balls 49 continuously connected to a spiral hole 48 formed by the screw groove 46 of the ball screw 9 and the spiral groove 47 of the inner peripheral surface of the nut body 44. The rotation of the nut body 44 around the screw shaft 9 moves the nut body 44, and thus the bridge frame 4 connected to the nut body 44 via the ball 43 and the cylindrical member 42, in the Y direction.
The nut body 44 is provided with a toothed pulley 52 by a bolt 51.
Is fixed, and the timing belt 5 is attached to the pulley 52.
It is multiplied by 3. A toothed pulley 54 is also fixed to a nut body (not shown) of the ball screw nut 8, and a timing belt 55 is hung on the pulley 54.

Toothed pulleys 63 and 64 are fixedly attached to the output rotary shaft of the electric motor 61 of the Y-direction linearly moving means 11 mounted on the bridge frame 4 through a bracket 62, respectively. 63 and 64
Timing belts 53 and 54 are respectively hung on these. When the motor 61 is actuated and the output rotation shaft thereof is rotated, on the other hand, the pulley 63 and the timing belt 5
3, the nut body 44 is rotated through the pulley 3 and the pulley 52,
On the other hand, the nut body of the ball screw nut 8 is rotated via the pulley 64, the timing belt 55, and the pulley 54, and thus both ends 5 and 6 of the bridge frame 4 are moved in the Y direction in synchronization.

The X-direction direct-acting means 3 is equipped with an electric motor 71, the motor 71 is attached to a base 72 via bolts 73, and a bolt 74 is attached to the base 72 to which the bracket 21 is also attached. A slider 75 is attached via. The slider 75 is slidably fitted in a rail 76 attached to the side surface of the bridge frame 4 in the X direction, and thus the base 72 is movable in the X direction.

Both ends of the ball screw 12 are fixed and supported on the upper surface of the bridge frame 4 via supporting members 81 and 82, and the ball screw nut 13 is formed in the same manner as the ball screw nuts 7 and 8. , Ball screw 1
The nut main body 83 screwed to 2 is rotatably attached to the base 72, and the toothed pulley 84 fixed to the nut main body 83 is hooked with a timing belt 85. The timing belt 85 is a motor. It is also hung on the toothed pulley 86 attached to the output rotation shaft of the motor 71, and when the motor 71 is operated to rotate the output rotation shaft, the pulley 86, the timing belt 85, and the pulley 8
The nut main body 83 is rotated via 4 and the base 7
2 and the cutter head 2 mounted on the base 72 are moved in the X direction.

The motors 61, 71 and the pneumatic cylinder device 22 are respectively connected to the numerical control device 91, and the motors 61, 71 and the pneumatic cylinder device 22 are operated by a program stored in advance in a storage device of the numerical control device 91. The operation is controlled.

The glass plate cutting device 1 thus formed operates as follows. The motor 61 is operated under the control of the numerical controller 91, whereby the nut bodies of the ball screw nuts 7 and 8 are synchronously rotated, and both ends 5 and 6 of the bridge frame 4 are also synchronously moved in the Y direction. To be done. At the same time, the numerical control device 91 controls the motor 71 to operate, whereby the nut body of the ball screw nut 13 is rotated, and the base 72 is moved in the X direction. Movement of the bridge frame 4 in the Y direction and X of the base 72
Due to the movement in the direction, the cutter head 2 is moved along the cutting line C to be attached. When the cutter head 2 is moved to the portion to which the cutting line C is to be attached, the numerical control device 91 operates the pneumatic cylinder device 22 to lower the cutter block 24 and press the cutter wheel 23 against the surface of the glass plate 25. As a result, a predetermined cutting line C is attached to the surface of the glass plate 25 corresponding to the shape to be broken.

By the way, in the glass plate cutting apparatus 1, the ball screw nuts 7, 8 and 13 which are screwed into the long ball screws 9, 10 and 12 are rotated without rotating them.
The nut body of is rotated to move the bridge frame 4 and the base 72 in the Y direction and the X direction.
Since the cutter head 2 is moved to the portion of the glass plate 25 to be attached, flexural vibration due to high speed rotation of the long ball screws 9, 10 and 12 does not occur, and conversely, the ball screw nuts 7 and 8 are not generated. The nut bodies 13 and 13 can be easily rotated at a high speed, so that the cutter head 2 can be rotated at a high speed.
Can be moved. Since the nut bodies of the ball screw nuts 7 and 8 are rotated in synchronization, the cutter wheel 23 can be moved accurately. Further, the synchronous rotation of the nut bodies of the ball screw nuts 7 and 8 is controlled by the Y-direction linear moving means 11 common to both ball screw nuts 7 and 8.
Since it is performed by one electric motor 61 in this example, selection of an electric motor for synchronization, maintenance and adjustment of an electric circuit are not required so much, and maintenance and adjustment can be performed in a short time. Can be done easily with.

Although the cutter head 2 is moved in the X direction in the above specific example, the cutter head 2 may be fixedly attached to the bridge frame 4 and the glass plate 25 may be moved in the X direction by a similar mechanism. Good.

[0022]

As described above, according to the present invention, both ball screw nuts are synchronously rotated to move the bridge frame to Y.
Since the Y-direction direct-moving means for direct-moving in the direction is provided, the cutter head can be moved in the Y-direction at high speed, and both ends of the bridge frame are moved in synchronization, so that the Y-direction of the cutter head can be accurately adjusted. In addition to being able to move in the same direction, maintenance and adjustment can be performed easily in a short time, which can improve work efficiency and obtain a high-quality processed product.

[Brief description of drawings]

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

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

FIG. 3 is a partial detailed cross-sectional view of the specific example shown in FIG.

[Explanation of symbols]

 1 Glass Plate Cutting Device 2 Cutter Head 3 X-Direction Moving Means 4 Bridge Frame 7, 8 Ball Screw Nut 9, 10 Ball Screws 11 Y-Direction Moving Means 12 Other Ball Screws 13 Other Ball Screw Nuts

Claims (3)

[Claims] 1. An X for directly moving a cutter head in the X-axis direction.
A bridge frame provided with a direction direct-moving means is movably supported on both sides in the Y direction, and ball screw nuts are rotatably mounted on both sides of the bridge frame, and each ball is attached to each of a pair of ball screws extending in the Y direction. In order to screw the screw nuts and rotate both ball screw nuts in synchronism to directly move the bridge frame in the Y direction, the glass plate is provided with a common Y-direction linear moving means for both ball screw nuts. Cutting device. 2. Another ball screw extending in the X direction is arranged on the bridge frame, and another ball screw nut screwed to the other ball screw is rotatably attached to the X direction linear moving means to directly move the X direction. The glass plate cutting device according to claim 1, wherein the cutter head is directly moved in the X direction by rotating another ball screw nut by means. 3. A bridge frame that supports the cutter head is movably supported on both sides in the Y direction, and ball screw nuts are rotatably attached to both sides of the bridge frame, and a pair of ball screws extending in the Y direction are respectively attached. The ball screw nuts are screwed together and the ball screw nuts are synchronously rotated to directly move the bridge frame in the Y direction. Glass plate cutting device.