JPS5973440A - Production apparatus for glass plate containing interlayer material - Google Patents

Abstract

PURPOSE:An apparatus, having an opening part in the bottom of a pot for holding a molten glass, and capable of flowing down the molten glass from the opening part and inserting an interlayer material through a mandrel into the central part of the thickness of a plate glass. CONSTITUTION:An apparatus having a pot 21, containing a molten glass 20, and having an opening part 22 for flowing out the molten glass 20 at the bottom thereof and a rising and lowering mandrel 28, having the lower end thereof facing the above-mentioned opening part 22 and a space part 29 for passing an interlayer material 33, e.g. a wire net, therethrough in the interior of the mandrel 28. A slit orifice 23 is provided at the under surface of the above-mentioned opening part 22, and edge holders 25 are capable of holding the side edges of the molten glass 20 flowing down from the above-mentioned opening part 22. A roll 26 for changing the transferring direction of the molten glass 20 is provided under the edge holders 25 to be in contact with the side edges of the molten glass 20. The interlayer material 33 in a position of the central part in the thickness direction of the molten glass 20 in the form of a plate is transferred to an annealing chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a glass plate having an intermediate material such as a metal wire or a metal mesh interposed therein.

Conventionally, the single-bower method shown in FIG. 1 or the two-polar method shown in FIG. 2 has been used to manufacture glass sheets containing intermediate materials such as metal nets.

That is, in the single bottle method, molten glass 3 flowing out from a holding furnace 1 through a lip tile 2 is passed through a pair of forming rolls 4.
．． The intermediate material 9 made of metal mesh wound around the roll 8 is rolled between the forming rolls 4 and 4 to form a plate into a plate shape between the glass plate 5t and the glass plate 6 and guided into the slow cooling chamber 7. The plate-like material is supplied into two spaces 5 by forming rolls 4.4.

In the case of such an apparatus, there is a problem in that it is difficult to interpose the intermediate material 9 between the glass plates having a thickness of 5Ω.

In addition, in the two-polar method, the holding furnace 1 and the slow cooling chamber γ are
A pair of forming rolls 10, 10, 11, 11 are arranged in between, separated at the front edge, and a trough 12 is provided just before the forming rolls 11, 11 on the downstream side. The structure is such that the molten glass 3 is guided, and the intermediate material 9t is supplied between the forming rolls 10 and 10 on the upstream side, or the intermediate material 9 is fed in front of the forming rolls 11 and 11 on the downstream side as shown by the broken line in the figure. An intermediate material 9 is sandwiched between the plate glass 5 supplied and flowing out from the holding furnace 1 and the plate glass 5a flowing out from the troughs 1 and 2.

According to such a device, it is possible to overcome the drawback of the single-polar method, which is that the intermediate material cannot be sandwiched in the center of the thickness of the glass plate, but it is possible to eliminate the disadvantage of the single-polar method in that it is not possible to insert the intermediate material into the center of the thickness of the glass plate. Since it is necessary to provide a trough as well as a trough, there is a problem that the entire device becomes larger.

Furthermore, in either the single-polar method or the two-polar method, the glass plate comes into contact with the forming roll and the dead plate, which has the disadvantage of reducing transparency and flatness.

The present invention has been made in order to improve the conventional problems as described above.The device itself is compact, a metal mesh etc. can be interposed in the center of the thickness of the glass, and the resulting glass plate can be improved in transparency and It is an object of the present invention to provide an apparatus for manufacturing a fern board containing an intermediate material which can have excellent flatness.

In order to achieve the above object, an apparatus for manufacturing a glass plate containing an intermediate material according to the present invention includes a mandrel having an opening in the bottom of a pot holding molten glass and a space through which the intermediate material of metal netting passes. It was arranged so that it could be raised and lowered so that its lower end faced the opening, and a slit orifice was provided in the opening, and the side end of the molten glass flowing down from the slit orifice was held by a gold edge holder. This is its gist.

An example of the implementation of the present invention will be described in detail below with reference to FIGS. 3 and 4.

FIG. 3 is a longitudinal sectional view of the manufacturing apparatus according to the present invention, and FIG. 4 is a view taken in the direction of arrow A in FIG. 22 is formed. A slit orifice 23 that can be slid laterally is provided on the lower surface of this opening 22,
The thickness of the molten glass 20 flowing down from the slit-shaped opening of the orifice 23 is adjusted to +n.

Further, below the slit orifice 23, a pair of edge holders 25 on the left and right sides are arranged to prevent the molten glass from shrinking in a pair of directions, and below the edge holders 25, a row 226 for changing the conveying direction of the molten glass 20 is installed. It is arranged so that it may contact the side end part of 20.

Then, the molten glass 20 whose direction has been changed by the rollers 26 is sent to the slow cooling chamber by the conveyance rollers 27 .

On the other hand, approximately the lower half of the pot 21 contains molten glass 20.
A mandrel 28 immersed therein is arranged to be movable up and down. This mandrel 28 is made of a refractory material, and has a space 29 formed therein, with a slit-shaped opening 30 at the lower end of this space 29 facing the opening 22 of the pot 21. By moving the mandrel 28 up and down, the flow rate of the molten glass 20 is controlled, and the gold slit orifice 2 at the lower end of the mandrel 28 is controlled.
3. By fitting it between 23 and 23, the molten glass 20
We are trying to stop the flow of water.

In addition, a partition plate 31 is provided in the space 29 of the mandrel 28.
A gap 32 is formed between the partition plate 31 and the inner wall of the space 29.

In the above process, an intermediate material 33 such as a metal net or metal wire wound around a roll (not shown) is pulled out from the roll and inserted into the space 29 of the metal mandrel 2B. Then,
The intermediate material 33 is drawn downward as the molten glass 20 flows down, passes between the slit orifices 230, and is placed in the slow cooling chamber in a state where it is located at the center in the thickness direction of the molten glass 20 in the shape of a plate that has flown down. transported to. At this time, an inert gas for preventing oxidation is supplied to the gap 32' between the partition plate 31 and the inner wall of the space 29 to prevent rust from forming on the intermediate layer 33 such as a metal net. In addition, in order to interpose a patterned material such as a small piece or a striped material in the glass plate instead of a continuous intermediate material 33 such as a metal net or metal wire, a supply provided on the upper part of the mandrel 28 is used. To apply the pattern, pressure may be applied from the part 34 so as to disperse and supply the material into the space part 29.

Furthermore, by making the molten glass 20 on the left and right sides of the mandrel 28 have different properties as shown in FIG. 3, it is possible to obtain a single glass plate with different surfaces using a single device.

As described above, according to the present invention, an opening is formed in the bottom of the pot that holds the molten glass, and the molten glass is allowed to flow down in the form of a plate from this opening, while an intermediate material such as a metal net is placed inside the pot. A mandrel, which has a space through which the glass passes, is arranged so that its position can be adjusted downward, and the intermediate material is introduced into the center of the thickness of the sheet glass through this mandrel, so that the forming roll can be used as in the conventional method. It is possible to completely manufacture wire-wired glass etc. without using. In this way, the plate glass can be transported to the annealing chamber without using forming rolls or dead plate rollers, so that the unevenness of the rolls formed when embedding the metal mesh on the glass plate surface remains unchanged. A glass plate with a beautiful surface with excellent transparency and flatness can be obtained without printing on the surface, and there is no need for conventional polishing to remove unevenness on the surface of the glass plate.

More conventional single? This method has many advantages over the Warr method or the Two-Bot method, such as the ability to make the device itself more compact.

[Brief explanation of drawings]

The drawings show conventional examples and embodiments, and FIG. 1 is a cross-sectional view of an apparatus for performing the conventional single-polar method 11, FIG. 2 is a cross-sectional view of an apparatus for performing the conventional two-bok method, and FIG. The figure is a sectional view of the manufacturing apparatus according to the present invention, and FIG. 4 is a view taken in the direction of the arrow in FIG. 3. In the drawing, 20 is molten glass, 21 is a pot, 22 is an opening formed on the bottom of the pot, 23 is a slit orifice, 25t is an edge holder, 28 is a mandrel, and 29
is a space part, and 33 is an intermediate material. Patent Applicant Nippon Sheet Glass Co., Ltd. Agent Patent Attorney 2 1) Part 1 Patent Attorney Kuni Ohashi Part 1 Patent Attorney Koyama Yu Drawing N2I Prisoner (No change to 1't'+'j) Figure 1 Figure 2 Written amendment to the seal procedure (voluntary) November 25, 1982 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1, Indication of the case: Japanese Patent Application No. 185051/1982 2, Title of the invention: Apparatus for manufacturing glass plates containing intermediate material 3, Person making the amendment Relationship to the case Patent applicant (400) Nippon Sheet Glass Co., Ltd. 4, Agent 5, Date of amendment order Voluntary 26, - Increase due to amendment ÷ Invention toad 6.7: Subject of amendment Drawing

Claims (1)

[Claims] A pot that holds molten glass and has an opening formed at the bottom for the molten glass to flow out, the lower end faces the opening, a space is formed inside through which an intermediate material such as a metal net passes, and the pot can be raised and lowered. An apparatus for producing an intermediate glass plate comprising a mandrel, a slit orifice provided on the lower surface of the opening, and an edge holder for holding a side edge of molten glass flowing down from the opening.