Method and device for manufacturing glass article

Patent metadata

Field	Value
Publication number	US-11795094-B2
Application number	US-201816761001-A
Country	US
Kind code	B2
Filing date	Nov 29, 2018
Priority date	Dec 20, 2017
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

Provided is a manufacturing method for a glass article, including: a pre-heating step (S1) of heating a transfer pipe (7); and a transfer step (S4) of causing molten glass to flow through the transfer pipe (7) after the pre-heating step (S1). The transfer pipe (7) includes a main body portion (8) having a tubular shape and a flange portion (9a, 9b) formed on an end portion of the main body portion (8). The main body portion (8) is retained by a refractory (10). In the pre-heating step (S1), the main body portion (8) is heated while the flange portion (9a, 9b) is movably supported so that the flange portion (9a, 9b) is moved in accordance with extension of the main body portion (8).

First claim

The invention claimed is:

1. A manufacturing method for a glass article, the manufacturing method comprising:
a pre-heating step of heating a transfer pipe without flowing molten glass in the transfer pipe; and
a transfer step of causing the molten glass to flow through the transfer pipe after the pre-heating step,
wherein the transfer pipe comprises a main body portion having a tubular shape and a flange portion formed on an end portion of the main body portion,
wherein the main body portion is retained by a refractory in a horizontal posture or an incline posture, and
wherein, in the pre-heating step, the main body portion is heated while a weight of the flange portion is supported by a support device that allows movement of the flange portion in a longitudinal direction of the main body portion and the flange portion is moved in the longitudinal direction of the main body portion in accordance with extension of the main body portion.

2. The manufacturing method for a glass article according to claim 1 , wherein, in the pre-heating step, an electric wire connected to the transfer pipe is movably supported so that the electric wire is moved in accordance with the extension of the main body portion.

3. The manufacturing method for a glass article according to claim 2 ,
wherein the flange portion has an upper portion and a lower portion, and
wherein, in the pre-heating step, the upper portion of the flange portion is movably supported.

4. The manufacturing method for a glass article according to claim 3 ,
wherein the flange portion has an intermediate portion between the upper portion and the lower portion, and
wherein, in the pre-heating step, the intermediate portion of the flange portion in an up-and-down direction is movably supported.

5. The manufacturing method for a glass article according to claim 4 , wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

6. The manufacturing method for a glass article according to claim 2 ,
wherein the flange portion has an upper portion, an intermediate portion, and a lower portion, and
wherein, in the pre-heating step, the intermediate portion of the flange portion in an up-and-down direction is movably supported.

7. The manufacturing method for a glass article according to claim 6 , wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

8. The manufacturing method for a glass article according to claim 2 ,
wherein the flange portion has an upper portion and a lower portion, and
wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

9. The manufacturing method for a glass article according to claim 2 , wherein, in the pre-heating step, the support member includes a rolling member.

10. The manufacturing method for a glass article according to claim 1 ,
wherein the flange portion has an upper portion and a lower portion, and
wherein, in the pre-heating step, the upper portion of the flange portion is movably supported.

11. The manufacturing method for a glass article according to claim 10 ,
wherein the flange portion has an intermediate portion between the upper portion and the lower portion, and
wherein, in the pre-heating step, the intermediate portion of the flange portion in an up-and-down direction is movably supported.

12. The manufacturing method for a glass article according to claim 11 , wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

13. The manufacturing method for a glass article according to claim 10 , wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

14. The manufacturing method for a glass article according to claim 10 , wherein, in the pre-heating step, the support device includes a rolling member.

15. The manufacturing method for a glass article according to claim 1 ,
wherein the flange portion has an upper portion, an intermediate portion, and a lower portion, and
wherein, in the pre-heating step, the intermediate portion of the flange portion in an up-and-down direction is movably supported.

16. The manufacturing method for a glass article according to claim 15 , wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

17. The manufacturing method for a glass article according to claim 1 ,
wherein the flange portion has an upper portion and a lower portion, and
wherein, in the pre-heating step, the lower portion of the flange portion is movably supported.

18. The manufacturing method for a glass article according to claim 1 , wherein, in the pre-heating step, the support device includes a rolling member.

19. The manufacturing method for a glass article according to claim 1 , wherein, in the pre-heating step, the support device includes a rod-shaped coupling member having an upper end swingably retained and a lower end swingably coupled to the flange portion.

Assignees

• Nippon Electric Glass Co

Inventors

• TENYAMA Kazuyuki
• Tamamura Shusaku
• Okamoto Shusuke

Classifications

• C03B17/064 Primary

  by the overflow downdraw fusion process; Isopipes therefor · CPC title

• C03B5/225

  Refining (C03B5/18 takes precedence {; Refining agents C03C1/004}) · CPC title

• C03B5/1675

  Platinum group metals · CPC title

• C03B7/07 Primary

  Electric means · CPC title

• C03B25/08

  of glass sheets · CPC title