JPH0940435A - Roller bending conveyor of sheet glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the bending accuracy of sheet glass and to prevent the flawing of this sheet glass by connecting ring rollers under special conditions between plural ring rollers and integral rotating plural roller assemblies. SOLUTION: A sprocket 34 is rotated by a driving motor 32 and its rotation is transmitted to the second sprocket 22D of the downstream side roller assembly (roller AS) 12 of a transporting path via a chain 30, by which the left side sprocket housing 22 is rotated. The cylindrical rubber members 24, 24... of the second roller 31 are compressed in the inner parts of a guide shaft 18 and elongated in the outer parts thereof. The change rates of the spacings between the ring rollers 20, 20... at the time of rotation are absorbed in such a manner, by which the sheet glass placed on the transporting path formed by the ring rollers 20, 20... is transported to the downstream side. The sheet glass is then heated up to the softening point in a heating furnace. The sheet glass is bent to prescribed curvature by its own weight along the transporting path of the rollers AS 12, 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate glass roller bending conveyer device for conveying plate glass heated to a softening point and bending the plate glass being conveyed by its own weight along a conveying path to an arbitrary curvature.

[0002]

2. Description of the Related Art A roller bending conveyor device is known as a device for bending and forming a sheet glass while conveying it with rollers. The roller bending conveyor device includes a roller assembly (hereinafter referred to as “roller As.”) In which a plurality of ring rollers are rotatably fitted on a guide shaft that is bent and formed to have an arbitrary curvature. Laura As.
Are arranged in parallel to form a conveyance path having an arbitrary curvature. Then, while the sheet glass heated to the softening point is conveyed through this conveying path, the sheet glass in the heated state is bent by its own weight so as to be along the conveying path.

This roller bending conveyor device is
As shown in US Pat. No. 4,311,509 and US Pat. No. 4,376,643, a convex portion is formed on one side of the ring roller and a groove is formed on the other side. The convex portion formed on one side portion of the roller is fitted into the groove portion formed on the other side portion of the adjacent roller. Then, the ring roller fitted into the guide shaft is pressed by the urging force of the compression spring attached to the end of the guide shaft.

As a result, the convex portion formed on one side of the plurality of ring rollers fitted on the guide shaft,
The groove portion formed on the other side portion of the adjacent ring roller engages. Therefore, by transmitting the rotational force to the outer ring roller, the plurality of ring rollers integrally rotate around the guide shaft.

[0005]

However, since the guide shaft into which a plurality of ring rollers are fitted is bent and formed to have an arbitrary curvature, a predetermined gap is formed in the engaging portion between the convex portion and the groove portion of the ring roller. It is necessary to provide. Therefore,
Since backlash occurs in the plurality of ring rollers, there is a problem in that the bending accuracy of the plate glass decreases.

Further, when the plurality of ring rollers rotate, the convex portions and the groove portions of the ring rollers interfere with each other and wear, so that there is a problem that the plate glass is damaged by the metal powder generated by the wear. The present invention has been made in view of such circumstances, and an object thereof is to provide a plate bending roller bending conveyor device capable of improving the bending accuracy of the plate glass and preventing the plate glass from being scratched. To do.

[0007]

In order to achieve the above object, the present invention provides a plurality of roller assemblies arranged in parallel with each other to form a conveying path bent to an arbitrary curvature. In a roller bending conveyor device for plate glass that bends and forms a predetermined curvature along the transfer path by its own weight during transfer of the plate glass in a heated state on the transfer path,
In the roller assembly, an elastic member is fixed between a plurality of ring rollers to coaxially connect the plurality of ring rollers, and the plurality of connected ring rollers are bent and formed into a guide shaft having an arbitrary curvature. Is rotatably fitted into the conveying path to form a curved surface of the conveying path, and a rotational force is transmitted to the end portions of the plurality of ring rollers to integrally rotate the plurality of ring rollers around the guide shaft. It is characterized by that.

Further, in order to achieve the above object, the present invention is characterized in that a plurality of ring rollers coaxially connected via the elastic member are formed so as to be separable. According to the present invention, in the roller assembly, since the plurality of ring rollers are connected via the elastic member, the rotational force is transmitted to the plurality of ring rollers via the elastic member. When the plurality of ring rollers rotate, the elastic member is compressed inside the curved guide shaft and expands outside. This absorbs the amount of change in the gap between the ring rollers when the plurality of ring rollers rotate around the curved guide shaft.

As described above, since the plurality of ring rollers are connected to each other through the elastic member, the play of the plurality of ring rollers can be eliminated. Further, since the elastic member is arranged between the ring rollers, it is possible to prevent the ring rollers from interfering with each other. Further, according to the present invention, the plurality of ring rollers connected by the elastic member are formed to be separable. This allows the ring roller to be easily attached to and detached from the guide shaft, and when some of the ring rollers are damaged, only the damaged ring roller can be removed and replaced.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of a plate glass roller bending conveyor device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a plate glass roller bending conveyor device according to the present invention. As shown in the figure, the plate glass roller bending conveyor device 10 includes a plurality of rollers As. 12, 12, ... and the roller As. 12, 12 ... Are arranged in parallel with each other to form a transport path 13. Laura As.
The transport path 13 formed by 12, 12 ... Is arranged at the downstream end of the heating furnace 14.

Roller As. .. are formed linearly on the upstream side of the transport path 13 and are bent and formed to have a predetermined curvature on the downstream side of the transport path 13. And roller As. 1
The curvatures of 2, 12 ... Gradually increase from the upstream side of the transport path 13 toward the downstream side, and are formed so as to have a predetermined curvature on the downstream side of the transport path 13. As a result, the plate glass 16 heated to the softening point in the heating furnace 14 is transferred to the roller A.
s. By transporting the sheet glass 16 to the downstream side through the transport path 13 of 12, 12, ... Bending is performed by its own weight along the curvature of 12, 12 ...

FIG. 2 shows the rollers As. 12 is a side view showing the roller As. The numeral 12 is arranged on the downstream side of the conveyance path 13 and is bent and formed to have a predetermined curvature. FIG. 3 shows the roller As. It is a principal part enlarged view of 12. It should be noted that the rollers As. 12
Is the roller As. Since the configuration is the same except that the curvature formed by bending is different from 12, the description thereof will be omitted.

As shown in FIG. 2, the rollers As. Reference numeral 12 includes a guide shaft 18, a plurality of ring rollers 20, a left sprocket housing 22, a right sprocket housing 23, and a plurality of tubular rubber members 24. Laura As. 12 is attached to a support base 28. That is, the support base 28 is provided with mounting members 28A and 28A at both ends, and the mounting members 28A and 28A are attached to the guide shaft 18 respectively.
Both ends of are fixed. As shown in FIG. 3, the guide shaft 18 is bent downward to be curved.

A plurality of ring rollers 20, 20 ... Are rotatably supported on the guide shaft 18. As shown in FIG. 5, the ring roller 20 includes a first roller 29 and a second roller 29.
It has a roller 31. The first roller 29 is rotatably supported by the guide shaft 18 via a bearing 29A, and a first ring 29B is fitted around the outer periphery of the first roller 29. The first ring 29B is formed of a heat insulating material, and prevents the heat of the conveyed sheet glass 16 from escaping through the first ring 29B.

A recess 29C is formed at the right end of the first roller 29, and a projection 31A formed at the left end of the second roller 31 described later is fitted in the recess 29C. First
A recess 29D is formed at the left end of the roller 29, and the recess 2
The right end portion of the tubular rubber member 24 is baked in the inside of 9D in a fitted state. The tubular rubber member 24 is made of hard rubber and is tubular.

The inner diameter and outer diameter of the second roller 31 described above are
The outer diameter and the inner diameter of the first roller 29 are the same as each other. The second roller 31 is rotatably supported by the guide shaft 18 via a bearing 31B.
A second ring 31C is fitted around the outer periphery of the. The second ring 31C is made of a heat insulating material and is conveyed to the plate glass 1
The heat of 6 is prevented from escaping through the second ring 31C.

As described above, the convex portion 31A is formed at the left end portion of the second roller 31 so as to be fitted into the concave portion 29C at the right end portion of the first roller 29. Pin holes 29E, 31E are formed at the opposite positions of the right end of the first roller 29 and the left end of the second roller 31, respectively.
A spring pin 33 is fitted in 31E. As a result, the first roller 29 and the second roller 31 are separably integrally connected via the spring pin 33.

A recess 31D is formed at the right end of the second roller 31, and the left end of the tubular rubber member 24 is baked in the recess 31D. This allows
The first roller 29 and the second roller 31 are tubular rubber members 24.
Are coaxially and integrally connected to each other, so that the plurality of ring rollers 20, 20 ... Are coaxially connected to each other via the tubular rubber members 24, 24 ... (See FIG. 3).

A left sprocket housing 22 and a right sprocket housing 23 are fitted into both ends of the guide shaft 18 (see FIG. 2). As shown in FIG. 3, a flange portion 22A is formed on the right end portion of the left sprocket housing 22, and the flange portion 22A is formed similarly to the first roller 29. Therefore, the second roller 31 arranged at the left end of the plurality of ring rollers 20, 20 ... Is separably connected to the flange portion 22A via the spring pin 33 and the like.

Further, first and second sprockets 22C and 22D are formed at the left end portion of the left sprocket housing 22, and the second sprocket 22D can transmit a rotational force to the sprocket 34 of the drive motor 32 via the chain 30. (See FIG. 2). The drive motor 32 is mounted on the support base 28 via bolts 36, 36 ... The left sprocket housing 22 has a bearing 38
It is rotatably supported by the guide shaft 18 via. Further, a stop ring 40 is fitted in the left guide shaft 18 of the left sprocket housing 22, and the stop ring 40 is fixed to the guide shaft 18 via a bolt 42.

A right sprocket housing 23 is fixed to the right end of the guide shaft 18 similarly to the left sprocket housing 22, and a flange portion 23A of the right sprocket housing 23 is formed similarly to the second roller 31. Therefore, the plurality of ring rollers 20, 20, ... Are provided on the flange portion 23A via the spring pins 33 and the like.
The first roller 29 arranged at the right end of the is connected so as to be separable.

Also, the right sprocket housing 23
The first and second sprockets 23C and 23D are formed similarly to the left sprocket housing 22 (see FIG. 2). First and second sprockets 23C, 23D
Is the same as the first and second sprockets 22C and 22D of the left sprocket housing 22, and the description thereof will be omitted. Further, a stop ring 40 is fitted into the right guide shaft 18 of the right sprocket housing 23, and the stop ring 40 is fixed to the guide shaft 18 via a bolt 42.

Here, since the guide shaft 18 is curved so as to project downward, the plurality of ring rollers 20, 20 ... Move away from each other under. This plurality of ring rollers 2
.. can be moved by compressing the tubular rubber members 24, 24 ... Above the guide shaft 18 and extending it below.

The rollers As. 12, 12, ... Are arranged in parallel with each other as shown in FIG. In FIG. 4, the rollers As. Second sprocket 22 formed on left side sprocket housing 22 of 12
The sprocket 34 of the drive motor 32 shown in FIG. 2 is connected to D via the chain 30 so that the rotational force can be transmitted. The downstream roller As. The first sprocket 22C of No. 12 is the roller As. 12 adjacent to the upstream side of the roller As. Twelve first sprockets 22C
To a chain 50.

Thus, the rollers As.
12, 12 by connecting the first sprockets 22C, 22C via a chain 50 or by rollers As. 12, 12 second sprocket 22
D and 22D are connected via the chain 52, the rotational force of the drive motor 32 is applied to the rollers As. 12, 12
Is transmitted to ...

In FIG. 4, the case where the rotational force of the drive motor 32 is transmitted to the left end portion of the guide shaft 18 has been described, but as shown in FIG. 12 also has first and second sprockets 23 on the right end of the guide shaft 18.
Since C and 23D are provided, the rotational force of the drive motor can be transmitted to both ends of the guide shaft 18 as needed.

The operation of the plate glass roller bending conveyor apparatus according to the present invention constructed as described above will be described. First, the drive motor 32 is driven to drive the sprocket 34.
And the rotational force of the sprocket 34 is passed through the chain 30 to the downstream side roller As. 12 to the second sprocket 22D (see FIG. 4). As a result, the downstream roller As. 12 of the left sprocket housing 22 is rotated, the left sprocket housing 22
The second roller 31 connected to the flange portion 22 </ b> A of the pin via the pin 33 rotates about the guide shaft 18. Since the ring rollers 20, 20, ... Are continuously connected to the second roller 31 via the tubular rubber member 24, when the second roller 31 rotates, the ring rollers 20, 2 ,.
0 rotates around the guide shaft 18.

When the ring rollers 20, 20 ... Rotate, the tubular rubber members 24, 24 ...
The inner portion of the guide shaft 18 is compressed and the guide shaft 18
The portion located outside of is stretched. In this way, by connecting the ring rollers 20, 20 ... With the tubular rubber members 24, 24 ..., The ring rollers 20 when the ring rollers 20, 20 ... Rotate around the curved guide shaft 18. , 20 is absorbed.

On the other hand, the downstream roller As. When the left sprocket housing 22 of 12 rotates, the first sprocket 22C of the left sprocket housing 22 is rotated.
Rotates. As a result, the downstream roller As. The rotational force of the first sprocket 22C of the first sprocket 22C of the No. 12 downstream roller As. Roller A adjacent to the upstream side of 12
s. Twelve first sprockets 22C are transmitted. Hereinafter, as shown in FIG. 4, the rollers As. 1
2, 12 by connecting the first sprockets 22C, 22C via a chain 50 or by rollers As. 12, 12 second sprocket 22
D and 22D are connected via the chain 52, the rotational force of the drive motor 32 is applied to the rollers As. 12, 12
Is transmitted to ...

As a result, the roller As. Each of the ring rollers 20, 20, ... Of 12, 12, ... Rotates around the guide shaft 18. By thus rotating the ring rollers 20, 20, ...
The plate glass 16 placed on the transport path 13 formed of 0, 20 ... Is transported to the downstream side. In this state, heating furnace 1
The glass plates 1 and 16 are sequentially conveyed into the glass plate 4 and the glass plate 1
6 and 16 are heated to the softening point. The plate glasses 16, 16 ... Heated in the heating furnace 14 are rollers As. 12, 1
.. is conveyed to the downstream side. In this case, the roller As. The transport paths 13 of 12, 12, ... Are linearly formed on the upstream side and bent to have a predetermined curvature on the downstream side. Further, the curvature of the transport path 13 is gradually increased from the upstream side to the downstream side. Is formed in. Therefore, the plate glass 16 heated to the softening point in the heating furnace 14 is set to the roller A.
s. By transporting the sheet glass 16 to the downstream side through the transport path 13 of 12, 12, ... It is bent and formed along the conveyance path 13 of 12, 12, ...

In the above embodiment, the case where the rotational force of the drive motor 32 is transmitted to the left end portion of the guide shaft 18 has been described based on FIG. 4, but as shown in FIG.
s. 12 is also the first and second on the right end of the guide shaft 18.
Since the sprocket wheels 23C and 23D are provided, the rotational force of the drive motor can be transmitted to both ends of the guide shaft 18 as needed.

[0032]

As described above, according to the plate glass roller bending conveyor apparatus of the present invention, since the plurality of ring rollers are connected to each other through the elastic members, it is possible to eliminate the play of the plurality of ring rollers. You can Therefore, the bending accuracy of the plate glass is improved. Further, since the elastic member is arranged between the ring rollers, interference between the ring rollers is prevented. Therefore, the wear of the ring roller can be prevented, the life of the roller assembly can be extended, and the plate glass can be prevented from being scratched by the metal powder generated by the wear.

Further, according to the present invention, the plurality of ring rollers connected by the elastic member are formed to be separable. As a result, the ring roller can be easily attached to and detached from the guide shaft, which facilitates the assembly of the roller assembly. Further, when some of the ring rollers are damaged, only the damaged ring roller can be removed and replaced, which improves the serviceability.

[Brief description of drawings]

FIG. 1 is a perspective view showing a roller bending conveyor device for sheet glass according to the present invention.

FIG. 2 shows the roller As. Used in the plate glass roller bending conveyor device according to the present invention. Front view showing

FIG. 3 shows a roller As. Used in a plate glass roller bending conveyor device according to the present invention. Enlarged view of the main part of the

FIG. 4 is an enlarged view of an essential part showing an enlarged view of a plate glass roller bending conveyor device according to the present invention when seen from a plane.

FIG. 5 shows the roller As. Used in the plate glass roller bending conveyor device according to the present invention. Enlarged view of essential parts showing the ring roller

FIG. 6 is a sectional view taken along line AA of FIG. 5;

[Explanation of symbols]

 10 ... Roller bending conveyor device 12 ... Roller assembly 16 ... Plate glass 18 ... Guide shaft 20 ... Ring roller 24 ... Cylindrical rubber member (elastic member)

Claims (2)

[Claims] 1. A plurality of roller assemblies are arranged in parallel with each other to form a conveyance path bent to have an arbitrary curvature, and the conveyance is performed by its own weight during conveyance of a sheet glass heated in the conveyance path. In a plate glass roller bending conveyor device that bends and forms a predetermined curvature along a path, the roller assembly fixes an elastic member between a plurality of ring rollers to connect the plurality of ring rollers coaxially, and the connection The plurality of ring rollers are rotatably fitted into the guide shaft bent to have an arbitrary curvature to form the curved surface of the transport path, and the rotational force is transmitted to the end portions of the plurality of ring rollers. And a plurality of ring rollers integrally rotating around the guide shaft. 2. The plate glass roller bending conveyor apparatus according to claim 1, wherein a plurality of ring rollers coaxially connected to each other through the elastic member are formed to be separable.