JPH0543062Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a mold for bending a glass plate, and more specifically, a stopper and a glass plate for preventing the placed glass plate from shifting. This invention relates to a mold for bending a glass plate that has smooth sliding contact surfaces.

[Conventional technology]

Glass plate bending molds are used to heat a glass plate placed on a frame material to soften it at a predetermined temperature, and then bend it along the curved surface of the frame material using its own weight.

In this case, the deformation of the glass plate during bending often causes misalignment on the frame material.
For this reason, it is necessary to improve the bending accuracy, so a stopper made of metal material such as stainless steel or iron has traditionally been provided in the frame material.By locking the glass plate to this stopper, it is possible to prevent misalignment. Measures are being taken to prevent this.

[Problem that the invention attempts to solve]

However, when using a stopper made of a metal material such as the one described above, the frictional force of the contact surface with the glass plate is large, so if the part of the glass plate that contacts the stopper gets caught, a chipping may occur at that part. Another problem is that the glass plate may be locally deformed during the bending process.

[Means for solving problems]

The present invention was made in view of the above-mentioned problems of the prior art, and its structural features include a frame material on which a glass plate is placed for bending under its own weight, and a glass plate placed on this frame material. A mold for bending a glass plate, the mold having a stopper for preventing misalignment of the glass plate, the stopper having a support rod attached to an outer circumferential side of the frame material, and a hollow part. and a cylindrical slide promoting member detachably inserted loosely into the support rod.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic diagram showing the main parts of a mold for bending a glass plate according to the present invention, including a frame member 1 on which a glass plate G is placed for bending under its own weight, and a frame member 1 on which a glass plate G is placed for bending under its own weight.
A stopper 11 is provided to prevent the glass plate G placed on the glass plate G from shifting.

Of these, frame material 1 for placing the glass plate G
In addition to those with a separate structure, which are composed of a fixed central frame part 2 and wing-like frame parts 3 movably connected to both sides of this central frame part 2, as shown in the illustrated example, Although not shown in the drawings, it is also possible to use a non-divided type in which the entire frame is integrally formed.

On the other hand, the stopper 11 disposed on the frame material 1 formed in this way is formed on the glass plate G positioned and placed on the frame material 1 according to predetermined design specifications. This is to prevent misalignment that tends to occur, and is appropriately provided at any position on the outer circumferential side of the frame member 1. FIG. 2 is an enlarged view showing the structure of the stopper 11 as an example, in which a metal such as stainless steel or iron is attached to the outer circumferential side of the frame member 1, for example, at an appropriate position on the outer circumferential side of the wing-shaped frame portion 3. It is composed of a support rod portion 12 made of a material, and a cylindrical slide promoting member 13 having a hollow portion 16 and loosely inserted into the support rod portion 12 in a detachable manner. Of these, the supporting rod part 12 is made to protrude horizontally from the frame material 1 so that it can be positioned near the outer periphery of the glass plate G when the glass plate G is placed on the frame material 1. It is composed of a horizontal portion 14 and a vertical portion 15 directly above the tip of the horizontal portion 14. Further, the sliding promotion member 13 that is detachably attached to the support rod 12 having such a configuration is a cylinder having a hollow portion 16 made of a member having a small friction coefficient and high heat resistance, such as a carbon material. The support rod 1 is formed in the hollow part 16.
It is attached by loosely inserting the vertical portion 15 in 2 and supporting it.

Since the present invention is constructed in this manner, during bending, the glass plate is placed on the frame material 1 at a predetermined position regulated by the relationship with the stopper 11 provided in advance on the frame material 1. G is placed and heated in an atmosphere at a predetermined softening temperature. As the glass plate G softens, it is bent by its own weight along the curved surface on which the frame member 1 is placed.

In this case, especially when the frame member 1 has a separable structure as in the illustrated example, the wing-shaped frame portion 3 is structured to respond to the deformation of the glass plate G, so that the peripheral edge of the glass plate G comes into sliding contact with the stopper 11. In this case, the sliding promotion member 13 that becomes the sliding contact surface of the stopper 11 is formed using a material with a small coefficient of friction such as carban or boron nitride (BN), and is free on the vertical part 15 of the support rod part 12. Since the stopper 11 is installed in the inserted state, the stopper 11 performs its intended function of positioning the glass plate G, while maintaining a state in which it smoothly slides into contact with the glass plate G without unnecessary deformation. be able to.

In addition, even when the glass plate G is placed on the frame material 1 or during bending, the slide promoting member 13 is incorporated into the stopper 11, so that the glass plate G can always be smoothly contacted with the glass plate G. It is also possible to effectively prevent cracks such as chipping that tend to occur during contact.

[Effect of idea]

As described above, according to the present invention, in the stopper disposed on the frame material, a sliding promoting member is incorporated in the position that is the contact surface with the glass plate. This effectively prevents deformation of the glass plate during bending and cracking caused by contact with the stopper when placing the glass plate on the frame material, and furthermore, Since the stopper is formed so that the slide promoting member can be attached and detached, maintenance and inspection thereof can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a schematic configuration example of a mold according to the present invention, and FIG. 2 is an enlarged perspective view showing an example of a stopper attached to a frame member. DESCRIPTION OF SYMBOLS 1... Frame material, 2... Central frame part, 3... Wing-shaped frame part, 11... Stopper, 12... Support rod part, 13
...Sliding promotion member, 14...Horizontal part, 15...Vertical part, 16...Hollow part.

Claims (1)

[Scope of utility model registration request] A frame material on which a glass plate is placed for bending under its own weight;
In this mold for bending a glass plate, the mold includes a stopper for preventing the glass plate placed on the frame from shifting. 1. A mold for bending a glass plate, comprising: a cylindrical sliding promotion member having a hollow portion and detachably inserted loosely into the supporting rod portion.