JP2002301643A - Polishing device for glass conveying roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polishing device capable of satisfactorily polishing a glass conveying roller of an elongate shape manufactured of a brittle material such as silica without causing its fracture or damage. SOLUTION: In this polishing device 10, the silica roller 20 is supported and rotated by a roller rotating part 14 and a roller support part 16, and the roller 20 is polished while a polishing head 18 is moved in the axial direction of the roller 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus for polishing a glass transport roller installed inside or outside a heating furnace for heating a glass plate to a bending temperature, and particularly for polishing a silica roller. To a polishing apparatus that performs

[0002]

2. Description of the Related Art Recently, as a heating furnace for bending a curved glass sheet used for window glass for automobiles, a heating furnace which heats a glass sheet by a heater while conveying the glass sheet by a roller conveyor has been used. The bending temperature (about 7
The glass sheet heated to 40 ° C.) is press-molded in a mold to form a curved glass sheet having a desired curvature.

Each roller constituting the roller conveyor is made of a ceramic such as silica which can withstand the high temperature of the heating furnace. However, in the heating furnace and in the vicinity of the outlet of the heating furnace, the glass plate heated and softened by the high temperature comes into contact with the roller and is conveyed by its rotational force. Is transferred to a glass plate (hereinafter, referred to as low-line printing).

Therefore, conventionally, as a measure for preventing low-line printing, the rollers were periodically removed from the heating furnace, and the workers manually polished them with sandpaper.

[0005]

However, if the rollers are polished by hand, there is a problem that the finished quality after polishing varies, which may adversely affect the glass plate.

[0006] Such a problem can be solved by making the polishing amount of the roller uniform by the roller polishing device. However, since the rollers used in the heating furnace are made of silica, that is, made of a brittle material as described above, the rollers may be easily broken unless the rollers are carefully handled by the polishing apparatus.

[0007] Further, although the rollers used in the heating furnace are generally long (about 2000 mm), they have a small diameter (60 mm to 70 mm in diameter), that is, an elongated shape. It was a cause for connection.

The present invention has been made in view of such circumstances, and a polishing apparatus for a glass transport roller capable of satisfactorily polishing a long and thin glass transport roller made of a brittle material without breaking or damaging the roller. The purpose is to provide.

[0009]

In order to achieve the above object, the present invention provides a polishing apparatus for polishing a glass transport roller made of a brittle material such as ceramic, which supports both ends of the glass transport roller. A rotating support means for applying a rotational force to the glass transport roller and a polishing member which is provided movably in the axial direction of the glass transport roller and abuts against the glass transport roller to grind the glass transport roller. And a moving means for moving the polishing head at a predetermined speed in the axial direction of the glass transport roller.

According to the polishing apparatus of the present invention, first, both ends of the glass transport roller are supported by the rotation support means. Next, in this state, the polishing member of the polishing head is pressed against the surface of the glass transport roller. Next, the glass transport roller is rotated about the axis by the rotation support means, and the polishing head is moved at a predetermined speed in the axial direction of the glass transport roller. Thus, the surface of the glass transport roller is polished by the polishing member.

As described above, the polishing apparatus of the present invention employs a structure in which the glass transport roller is rotated and the polishing head is moved in the axial direction of the glass transport roller. Glass transport roller is damaged,
Can be polished well without damage.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a glass transport roller polishing apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

A polishing apparatus 10 for a glass transporting roller according to the embodiment shown in FIG. 1 has a horizontally long main body 12.
A roller rotating unit 14, a roller supporting unit 16, and a polishing head 18 are respectively installed at predetermined positions on the upper part of the unit 2. Further, the roller rotating unit 14, the roller support unit 16, and the polishing head 18 cover the cover 22 attached to the upper part of the main body 12 when the silica glass transport roller (hereinafter, referred to as silica roller) 20 is polished. (Illustrated by a dashed-dotted line) to prevent the polishing debris and cutting water generated during the polishing of the silica roller 20 from scattering to the outside of the main body 12.

On one end side of the main body 12 (left side in FIG. 1), a roller rotating section 14 is installed. On the other end side of the main body 12 (right side in FIG. 1), a roller supporting section 16 is attached to the roller rotating section 14. It is installed facing. The long and narrow (for example, φ60 mm, length L = 2000 mm) silica roller 20 taken out of the heating furnace has its right end rotatably supported on the roller support 16 around an axis 20A (see FIG. 2). Is done. The left end is rotatably supported by the roller rotating unit 14, and the shaft 2
A rotational force about 0 A is applied. Roller rotating unit 1
The roller support 16 and the roller support 16 constitute one embodiment of the rotation support means of the present invention. The silica roller 20 supported by the roller rotating unit 14 and the roller supporting unit 16
Is sandwiched by a lateral displacement prevention stopper 24 provided on the roller rotating unit 14 side and a lateral displacement prevention stopper 26 provided on the roller support unit 16 side, thereby preventing lateral displacement from a specified position. Side slip prevention stopper 26
For example, when the air cylinder device 28 is applied, an elastic pad 32 is attached to the tip of the piston 30 and the elastic pad 32 is brought into contact with the end of the silica roller 20 to prevent the silica roller 20 from laterally shifting. .

As shown in FIG. 2, the roller rotating section 14 mainly includes a pair of lower receiving rollers 34, 34 for supporting the ends of the silica roller 20, and a driving roller 36 which comes into contact with the silica roller 20 to apply a rotational force. Be composed.

The lower receiving rollers 34, 34
8 and is rotatably attached to the bracket 8.
It is erected on the upper surface of a table 40 fixed to the upper part of the main body 12.

The drive roller 36 is rotatably provided at the tip of an arm 42. The arm 42 is swingably attached to a drive unit main body 44 via a shaft 46. The drive unit main body 44 is slidably provided via a pair of guide blocks 50, 50 on a pair of guide rails 48 arranged on the table 40 in a direction perpendicular to the axis 20A of the silica roller 20. The drive unit main body 44 is connected to a piston 54 of an air cylinder device 52 fixed on the table 40. Like the guide rail 48, the air cylinder device 52 is also disposed in a direction orthogonal to the axis 20A of the silica roller 20. Therefore, when the piston 54 of the air cylinder device 52 expands and contracts, the drive unit main body 44 and the arm 4
The drive roller 36 advances and retreats in the direction of the arrow A with respect to the silica roller 20 via 2.

The drive unit body 44 includes a drive roller 3
6 is mounted. Motor 5
A pulley 58 is attached to the sixth output shaft 56a, and the pulley 58 is connected to a large-diameter timing pulley 60 also supported by the drive unit main body 44 via an endless belt 62. The shaft of the timing pulley 60 is coaxial with the shaft 46, and a small-diameter timing pulley 64 is attached to the shaft 46. The timing pulley 64 is connected to an unillustrated timing pulley provided coaxially with the drive roller 36 via an endless belt 66. Therefore, the rotational driving force of the motor 56 is transmitted to the drive roller 36 via a power transmission system including the pulleys 58, 60, 64 and the belts 62, 66. Therefore,
The silica roller 20 is rotated by the rotational force of the drive roller 36 while being sandwiched between the lower receiving rollers 34 and 34 and the drive roller 36. The pressing force of the driving roller 36 against the silica roller 20 is determined by the table 40 and the arm 42.
Piston 7 of the air cylinder device 68 installed between
It can be obtained by contracting 0. In short, the air cylinder device 68 is fixed to the table 40, and the piston 70 is connected to the arm 42 via the bearing 72.

As shown in FIG. 3, the roller support 16 mainly includes a pair of lower receiving rollers 74, 74 for supporting the ends of the silica roller 20, and an upper receiving roller 76.

The lower receiving rollers 74, 74
8, the bracket 78 is erected on the upper surface of the table 80.

The upper receiving roller 76 is rotatably provided at the tip of an arm 82, and the arm 82 is swingably attached to a support unit main body 84 via a shaft 86. The support unit main body 84 includes guide blocks 90, 90 on a pair of guide rails 88 disposed on the table 80 in a direction orthogonal to the axis 20A of the silica roller 20.
Is provided so as to be slidable via the. The support unit main body 84 is connected to a piston 94 of an air cylinder device 92 fixed on the table 80.
Like the guide rail 88, the air cylinder device 92 is also disposed in a direction perpendicular to the axis 20A of the silica roller 20. Therefore, when the piston 94 of the air cylinder device 92 expands and contracts, the upper receiving roller 76 moves forward and backward in the direction of arrow A with respect to the silica roller 20 via the support unit main body 84 and the arm 82.

The pressing force of the upper receiving roller 76 against the silica roller 20 can be obtained by contracting the piston 98 of the air cylinder device 96 provided between the table 80 and the arm 82. In short, the air cylinder device 96 is fixed to the table 80 and the piston 98
Is connected to the arm 82 via the bearing 100.

Since the positioning of the silica roller 20 is performed with reference to the lateral displacement prevention stopper 24 provided on the left side in FIG. 1, the position of the roller supporting portion 16 is appropriately adjusted according to the length of the silica roller 20. Need to change. For this reason, the table 80 of the roller support 16 is mounted on the pair of guide rails 102, 102 arranged in parallel with the axial direction of the
4 and 104 are provided slidably. Therefore, the table 8 is moved along the guide rails 102, 102.
By moving 0, the roller support 16 can be located at a position corresponding to the length of the silica roller 20.

The polishing head 18 shown in FIGS. 4 to 6 has a supply roll 110 (FIG. 5) in which a band-shaped sandpaper 108 is wound around a head body 106, and a winding roll for winding the sandpaper 108 supplied for polishing. A roll 112 (FIG. 5) and the like are rotatably mounted. The sandpaper 108 unwound from the supply roll 110 is guided to the backup roller 116 via a plurality of pass rollers 114, 114, as indicated by broken lines in FIG. Roll 1 for winding through
It is led to 12. The core of the winding roll 112 is connected to an output shaft of a motor (not shown) built in the head body 108. Therefore, when the motor is driven, the sandpaper 108 is rewound along the above-described path. Then, the sandpaper 108 whose direction is being changed is pressed against the silica roller 20 by the backup roller 116, so that the surface of the silica roller 20 is polished by the sandpaper 108.

Further, as shown in FIG.
9 is fixed to the head body 106. This nozzle 1
09 supplies cutting water between the sandpaper 108 and the silica roller 20. Further, a tank 111 for supplying cutting water to the nozzle 109 is provided on the side of the main body 12 as shown in FIG. The count of the sandpaper 108, the rewind speed of the sandpaper 108, and the pressing force of the backup roller 116 against the silica roller 20 are appropriately set to favorable conditions. Backup roller 1
16 is vibrated by an ultrasonic vibrator or the like, the sandpaper 1
Since the area per unit time of contact of the roller 08 with the silica roller 20 can be increased, the polishing efficiency is improved. In addition,
The frequency of the vibration of the backup roller 116 may be appropriately changed according to the material, diameter, or length of the silica roller 20. In addition, one silica roller 20 has a constant frequency.
May be polished, or may be varied according to a polishing position or the like.

The polishing head 18 thus configured is
As shown in FIG.
A pair of guide rails 122, 122 disposed in a direction perpendicular to the axis 20A of the
Is provided so as to be slidable via the. The head main body 106 is connected to a piston 128 of an air cylinder device 126 fixed on the table 120. This air cylinder device 126 is also a guide rail 122
Similarly to the above, it is disposed in a direction orthogonal to the axis 20A of the silica roller 20. Therefore, the air cylinder device 1
When the piston 128 at 26 expands and contracts, the polishing head 18 moves forward and backward with respect to the silica roller 20 in the direction of the arrow A in FIG.

In the polishing apparatus 10 of the embodiment, the polishing head 18 moves in the axial direction of the silica roller 20 with respect to the silica roller 20 to polish the silica roller 20. For this reason, the table 120 on which the polishing head 18 is mounted is mounted on the pair of guide rails 102 and 102 arranged in parallel with the axial direction of the silica roller 20 by the guide block 13.
It is slidably provided via 0 and 130. Also,
A joint 132 projects downward from the lower portion of the table 120, and the lower portion of the joint 132 is connected to an endless belt 134.

The belt 134 is driven by a driving pulley 13 of a motor 136 installed below the roller rotating unit 14 shown in FIG.
8 and a driven pulley 140 installed below the roller support 16 shown in FIG. Therefore, when the belt 138 is rotated at a predetermined speed by the motor 136, the polishing head 18 reciprocates along the axial direction of the silica roller 20. The belt driving device including the motor 136 and the belt 138 constitutes one embodiment of the moving means of the present invention.

Next, the polishing apparatus 10 constructed as described above is used.
The operation of will be described.

First, the end of the silica roller 20 taken out of the heating furnace is supported by the roller rotating unit 14 and the roller supporting unit 16. In this case, the driving roller 36 of the roller rotating unit 14 shown in FIG.
By retracting, the roller 4 is retracted from a position above the lower receiving rollers 34, 34 in advance. Similarly, FIG.
The upper receiving roller 76 of the roller supporting portion 16 is retracted in advance from a position above the lower receiving rollers 74 by contracting the piston 94 of the air cylinder device 92. Thereby, one end of the silica roller 20 is connected to the receiving rollers 34, 34 of the roller rotating unit 14, and
The other end of the lower receiving roller 74 of the roller supporting portion 16
Can be placed from above.

Thereafter, the air cylinder device 5 shown in FIG.
The piston 54 of the second cylinder is extended to move the driving roller 36 to a position above the lower receiving rollers 34, 34, and at the same time, the piston 70 of the air cylinder device 68 is contracted, so that the end of the silica roller 20 is brought into contact with the driving roller 36 and the lower receiving roller. Roller 34,
34. Further, the piston 94 of the air cylinder device 92 shown in FIG.
6 is moved to a position above the lower receiving rollers 74, 74, the piston 98 of the air cylinder device 96 is contracted, and the end of the silica roller 20 is held between the upper receiving roller 76 and the lower receiving rollers 74, 74. I do. As a result, the silica roller 20 is rotatably supported by the polishing apparatus 10 and is rotated by the rotational force from the roller rotating unit 14.

Next, the polishing head 18 previously retracted from the silica roller 20 is moved to the guide rails 102, 102.
And position it at the polishing start position. That is, the polishing head 18 is positioned at the right or left end position in FIG.
Position.

Thereafter, the air cylinder device 12 shown in FIG.
6 is extended, and the backup roller 116 around which the sandpaper 108 is wound is
The surface is pressed with a predetermined pressing force.

Next, the silica roller 20 is rotated about the axis 20A by the driving force of the roller rotating unit 14, and the sandpaper 108 is supplied while the polishing head 18 is moved at a predetermined speed in the axial direction of the silica roller 20. . Thereby, the surface of the silica roller 20 is polished by the sandpaper 108.

As described above, the polishing apparatus 10 according to the embodiment is
Adopts a structure in which the silica roller 20 is rotated and the polishing head 18 is moved in the axial direction of the silica roller 20, so that the elongated silica roller 20 made of a brittle material is used.
Can be satisfactorily polished without being damaged or damaged. In the above description, a roller made of silica has been described as an example, but the present invention is not limited to this. It can be applied to other brittle materials such as ceramics.

[0036]

As described above, the glass transport roller polishing apparatus according to the present invention employs a structure in which the glass transport roller is rotated to move the polishing head side in the axial direction of the glass transport roller. As a result, it is possible to satisfactorily polish the elongated glass transport roller made of a brittle material without breaking or damaging the roller.

[Brief description of the drawings]

FIG. 1 is a perspective view of a polishing apparatus for a glass transport roller according to an embodiment.

FIG. 2 is a side view showing the structure of a roller rotating unit.

FIG. 3 is a side view showing the structure of a roller supporting unit.

FIG. 4 is a side view showing the structure of the polishing head.

FIG. 5 is an overall perspective view of a polishing head.

FIG. 6 is a schematic structural diagram of a polishing head.

[Explanation of symbols]

10 Polishing device, 12 Body, 14 Roller rotating unit, 1
6 roller support, 18 polishing head, 20 silica roller, 24, 26 stopper for preventing lateral displacement, 34 lower receiving roller, 36 drive roller, 44 drive unit body, 108 sandpaper, 136 motor 138 ...
belt

Continued on the front page F term (reference) 3C034 AA01 BB01 BB71 CB01 CB07 CB15 DD09 3C043 AA08 AC13 CC05 DD05 DD06 3C058 AA05 AA11 AB04 AB06 CA05 CB03 CB04

Claims (1)

[Claims] 1. A polishing apparatus for polishing a glass transport roller made of a brittle material such as ceramic, a rotary supporting means for supporting both ends of the glass transport roller and applying a rotational force to the glass transport roller; A polishing head provided movably in the axial direction of the glass transporting roller and having a polishing member attached to the glass transporting roller for polishing the glass transporting roller; and And a moving means for moving the glass at a predetermined speed.