Method and device for bending a glass pane

Patent metadata

Field	Value
Publication number	US-11247930-B2
Application number	US-201816330660-A
Country	US
Kind code	B2
Filing date	Jan 11, 2018
Priority date	Jan 30, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A method for bending a glass pane in a furnace, wherein the furnace has an inlet and an outlet, includes providing a glass pane on a mounting, wherein the mounting is preheated, introducing the mounted glass pane into the inlet of the furnace for bending, discharging the bent, mounted glass pane out of the outlet of the furnace, withdrawing the bent, mounted glass pane from the mounting, installing thermal insulation on the mounting, returning the mounting and the thermal insulation using a transport device, removing the thermal insulation prior to renewed mounting, wherein the aforementioned steps are carried out again in a cyclical manner.

First claim

The invention claimed is:

1. A method for bending a glass pane in a furnace, wherein the furnace has an inlet and an outlet, comprising the steps:
providing a glass pane on a mounting, wherein the mounting is preheated,
introducing the mounted glass pane into the inlet of the furnace for bending,
discharging the bent, mounted glass pane out of the outlet of the furnace,
withdrawing the bent, mounted glass pane from the mounting,
installing thermal insulation on the mounting,
returning the mounting and the thermal insulation using a transport device so that the mounting and the thermal insulation are moved together by the transport device,
removing the thermal insulation from the mounting and removing the mounting from the transport device, prior to providing a following glass pane on said mounting,
wherein the aforementioned steps are carried out again in a cyclical manner, and wherein the mounting is heated, at least intermittently, between withdrawing the bent, mounted glass pane from the mounting and introducing the following glass pane provided on said mounting into the inlet of the furnace.

2. The method according to claim 1 , wherein the thermal insulation is implemented like a hood and is put over the mounting during the installing of the thermal insulation.

3. The method according to claim 1 , wherein the mounting is transported out of the outlet of the furnace into the inlet of the furnace in less than 60 seconds.

4. The method according to claim 1 , wherein, at least intermittently, controlled/regulated or uncontrolled heating of the mounting is provided between withdrawing the bent, mounted glass pane from the mounting and introducing the following glass pane provided on said mounting into the inlet of the furnace.

5. The method according to claim 1 , wherein a temperature of the mounting is 200° C. or more before entry into the furnace.

6. The method according to claim 1 , wherein a heating device to heat the mounting is mounted on the transport device or the mounting.

7. The method according to claim 1 , wherein the mounting includes a lower end and an upper end and wherein a heating device to heat the mounting is arranged on the lower end of the mounting during transport by means of the transport device.

8. The method according to claim 1 , further comprising measuring a temperature of the mounting with a temperature sensor, determining whether the temperature has dropped to or below a specified value, and, if the temperature has dropped to or below the specified value, heating the mounting with a heating device.

9. The method according to claim 8 , wherein the specified value is 200° C.

10. The method according to claim 1 , wherein the following glass pane is different from said glass pane.

11. The method according to claim 1 , wherein the mounting is preheated to a temperature of more than 180° C.

12. The method according to claim 11 , wherein the mounting is preheated to a temperature of more than 200° C.

13. The method according to claim 1 , wherein the thermal insulation is a hood that includes rock wool, glass wool, an ethylene-propylene copolymer, a polyimide, or a silicone-coated glass fiber fabric.

14. The method according to claim 1 , wherein the mounting is heated using an electrical resistance heater, or a burning gas or by induction.

15. A method for bending a glass pane in a furnace, wherein the furnace has an inlet and an outlet, comprising the steps:
providing a glass pane on a mounting, wherein the mounting is preheated,
introducing the mounted glass pane into the inlet of the furnace for bending,
discharging the bent, mounted glass pane out of the outlet of the furnace,
withdrawing the bent, mounted glass pane from the mounting,
installing thermal insulation on the mounting,
returning the mounting and the thermal insulation using a transport device so that the mounting and the thermal insulation are moved together by the transport device,
removing the thermal insulation from the mounting and removing the mounting from the transport device, prior to providing a following glass pane on said mounting,
wherein the aforementioned steps are carried out again in a cyclical manner, and wherein a heating device is mounted on the transport device or the mounting, said heating device heating at least part of the mounting when the thermal insulation is installed on the mounting and the mounting and the thermal insulation are moved by the transport device.

16. The method according to claim 15 , wherein the thermal insulation is a hood that includes rock wool, glass wool, an ethylene-propylene copolymer, a polyimide, or a silicone-coated glass fiber fabric.

17. The method according to claim 15 , wherein the heating device is an electrical resistance heater.

18. The method according to claim 15 , wherein the following glass pane is different from said glass pane.

Assignees

• Saint Gobain

Inventors

• Kronhardt Heinrich
• Schulz Valentin

Classifications

• C03B35/202

  by supporting frames (C03B35/145 takes precedence) · CPC title

• C03B29/08

  Glass sheets · CPC title

• C03B23/0235 Primary

  involving applying local or additional heating, cooling or insulating means · CPC title