KR-102961405-B1 - Device for manufacturing glass articles and method for manufacturing glass articles

KR102961405B1KR 102961405 B1KR102961405 B1KR 102961405B1KR-102961405-B1

Abstract

A glass manufacturing device (1) is equipped with a transfer pipe (P1) for transporting molten glass (Gm). The transfer pipe (P1) is equipped with a tubular section (14) through which molten glass (Gm) flows, and electrode sections (15a, 16a) for electric heating attached to the outer side of the tubular section (14). The tubular section (14) has a joint section (14a) extending along the direction of the tubular axis (Z). An annular rib section (24) is attached to the tubular section (14). The rib section (24) has a joint section (24a) in the middle of the circumferential direction of the tubular section (14). The position of the joint section (14a) of the tubular section (14) and the position of the joint section (24a) of the rib section (24) are different in the circumferential direction of the tubular section (14).

Inventors

타마무라 슈사쿠
후지와라 카츠토시

Assignees

니폰 덴키 가라스 가부시키가이샤

Dates

Publication Date: 20260508
Application Date: 20220912
Priority Date: 20211001

Claims (7)

A glass article manufacturing device equipped with a transfer pipe for transferring molten glass, The above transfer tube is equipped with a tubular section through which molten glass flows, and an electrode section attached to the outer circumference of the tubular section and which also flows current through the tubular section. The above-mentioned tubular section has a joint section extending along the tubular axis direction, and A circular rib portion is attached to the above tubular portion, and The above rib portion has a joint portion in the middle of the circumferential direction of the above tubular portion, A manufacturing apparatus for glass articles characterized in that the position of the joint portion of the above-mentioned tubular part and the position of the joint portion of the above-mentioned rib portion are different in the circumferential direction of the above-mentioned tubular part.
In Article 1, A glass article manufacturing apparatus in which the above transfer pipe forms a stirring tank in which the pipe axis direction of the tubular part follows the up-and-down direction, and an inlet pipe and an outlet pipe are respectively connected from the outside to the inlet and outlet of molten glass formed in the tubular part.
In Article 2, A manufacturing apparatus for glass articles in which the position of the joint portion of the above-mentioned tubular part and the respective positions of the inlet and the outlet are different in the circumferential direction of the above-mentioned tubular part.
In Article 2 or Article 3, A manufacturing apparatus for glass articles in which the position of the joint portion of the above rib portion and the respective positions of the above inlet and above outlet are different in the circumferential direction of the above tubular portion.
In Article 2 or Article 3, A manufacturing apparatus for glass articles, wherein the position of the inlet and the position of the outlet are opposite with the tubular axis of the tubular part in between when viewed in a planar view, and the position of the joint of the tubular part and the position of the joint of the rib part are opposite with a virtual straight path from the inlet to the outlet in between when viewed in a planar view.
In any one of paragraphs 1 to 3, A device for manufacturing glass articles, wherein the tubular portion is formed of platinum or a platinum alloy and the rib portion is formed of reinforced platinum or a reinforced platinum alloy.
A method for manufacturing a glass article comprising a process of conveying molten glass using a conveying pipe equipped with a manufacturing apparatus described in any one of claims 1 to 3.

Description

Device for manufacturing glass articles and method for manufacturing glass articles The present invention relates to an apparatus for manufacturing a glass article and a method for manufacturing a glass article, the apparatus having a transfer pipe for transferring molten glass. As is well known, when manufacturing glass articles such as glass plates or glass tubes, molten glass is transferred from a melting furnace to a forming device. Multiple transfer pipes are installed along the path for transferring this molten glass. As for the main transfer pipes, examples include configuring the clarification tank, stirring tank, and cooling pipe in sequence starting from the upstream side of the transfer path. Additionally, there are transfer pipes configured such as an upstream connecting pipe installed between the melting furnace and the clarification tank, and a midstream connecting pipe installed between the clarification tank and the stirring tank. Patent Document 1 discloses that the circumferential ends of a pipe material forming a tubular section through which molten glass flows within a transfer pipe (in the said document, a transfer pipe constituting a stirring tank) are joined by welding. Accordingly, a joint section (joint section) extending in the direction of the pipe axis is formed in the tubular section of the said document. Patent Document 2 discloses that an electrode portion for electric heating is attached to the outer circumference of the tubular portion of a transfer pipe. In addition, in the said document, the electrode portion is integrally attached to the outer circumference of a flange portion installed at the end of the tubular portion in the direction of the pipe axis. Patent Document 3 discloses that a flange-shaped reinforcing member (annular rib portion) is attached to the outer circumference of the tubular portion of a transfer pipe. In addition, in the said document, the annular rib portion is attached and installed by plasma welding at multiple locations along the tubular axis direction of the tubular portion. FIG. 1 is a schematic side view showing the overall configuration of a glass article manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view showing a first example of a transfer pipe, which is a component of a glass article manufacturing device according to an embodiment of the present invention. FIG. 3 is a longitudinal side view of a transfer pipe according to the first example, cut along line AA of FIG. 2. Figure 4 is a cross-sectional plan view of a transfer pipe according to the first example, cut along the BB line of Figure 2. FIG. 5 is a perspective view showing a second example of a transfer pipe, which is a component of a glass article manufacturing device according to an embodiment of the present invention. FIG. 6 is a longitudinal front view of a transfer pipe according to the second example, cut along the CC line of FIG. 5. FIG. 7 is a perspective view showing a third example of a transfer pipe, which is a component of a glass article manufacturing device according to an embodiment of the present invention. FIG. 8 is a longitudinal front view of a transfer pipe according to the third example, cut along the DD line of FIG. 7. Hereinafter, an apparatus for manufacturing a glass article and a method for manufacturing the same according to an embodiment of the present invention will be described with reference to the attached drawings. FIG. 1 illustrates a manufacturing apparatus for glass articles according to the present invention. As shown in FIG. 1, the manufacturing apparatus (1) is broadly classified into a melting furnace (2) which is placed at an upstream end and heats glass raw materials to produce molten glass (Gm), a conveying device (3) which conveys the molten glass (Gm) flowing out from the melting furnace (2) toward the downstream side, and a forming device (4) which forms a glass ribbon (Gr) using the molten glass (Gm) supplied from the conveying device (3). The transfer device (3) is equipped with a clarification tank (5), a stirring tank (6), and a state adjustment tank (7) in order from the upstream side. The inlet (5a) of the clarification tank (5) is connected to the outlet (2b) of the melting furnace (2) via an upstream connecting pipe (8). The outlet (5b) of the clarification tank (5) is connected to the inlet (6a) of the stirring tank (6) via an upstream connecting pipe (9). The outlet (6b) of the stirring tank (6) is connected to the inlet (7a) of the state adjustment tank (7) via a cooling pipe (10). The clarification tank (5) performs a clarification treatment on the molten glass (Gm) produced in the melting furnace (2). The stirring tank (6) stirs the molten glass (Gm) that has undergone the clarification treatment to perform a homogenization treatment. The cooling pipe (10) cools the molten glass (Gm) that has undergone the homogenization treatment to adjust its viscosity, etc. The state