Glass Ribbon Forming Trough Diverter for Molten Flow Control

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Solution Overview

Problem

Conventional forming devices for manufacturing glass ribbons face challenges in controlling the flow rate of molten material efficiently and cost-effectively, as altering the device's shape to achieve desired flow rates is inefficient and costly.

Innovation Solution

A forming device with a trough bounded by weirs and a bottom surface, incorporating a diverter that can adjust the flow rate of molten material by varying the diverter's shape and geometry, allowing for controlled flow adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the shape of the forming device is contoured to achieve desired flow rates, then the flow rate control is improved, but the manufacturing cost and efficiency deteriorate

Engineering Contradiction:
Improveflow rate controlVSAvoiddevice modification cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The forming device is segmented into a trough and a separate diverter component. The diverter can be independently shaped and positioned within the trough, allowing flow rate control without modifying the entire forming device structure. This segmentation enables easy replacement or adjustment of the diverter to achieve desired flow rates.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The diverter acts as an intermediary element between the molten material source and the forming zone. By introducing this intermediate component with specific geometric features (such as angled surfaces or height variations), the flow rate is controlled without altering the primary forming device structure, thus avoiding costly modifications.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If the shape of the forming device is contoured to achieve desired flow rates, then the flow rate control is improved, but the manufacturing time and efficiency deteriorate

Engineering Contradiction:
Improveflow rate controlVSAvoiddevice modification time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The diverter is designed as a separate, modular component that can be independently manufactured and installed. This allows for quick replacement or adjustment of the diverter geometry to optimize flow rates without downtime for modifying the entire forming device, significantly reducing the time lost to adjustments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The diverter geometry (such as height, angle, or position) can be easily varied to change flow rate parameters. These parameter changes are achieved by selecting different pre-fabricated diverters or making simple adjustments to the diverter's position or orientation, rather than re-contouring the entire forming device, thus minimizing time loss.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If a diverter is added to control flow rate, then the flow rate adjustability is improved, but the device complexity increases

Engineering Contradiction:
Improveflow rate adjustabilityVSAvoidforming device structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The diverter is a simple, segmented component with basic geometric features (such as a single angled surface or stepped height) that provides flow rate control without introducing complex mechanisms. Its simplicity maintains overall device clarity while achieving the desired adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The diverter introduces local geometric variations (such as a specific angle or height at a particular location in the trough) to control flow rate. This localized modification achieves flow rate adjustability without complicating the overall structure of the entire forming device, maintaining simplicity elsewhere.

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The diverter enables precise control over the flow rate of molten material, enhancing the efficiency and cost-effectiveness of glass ribbon production by allowing for flexible and efficient management of flow rates without the need for costly shape modifications.

Implementation Method 1

a flow rate of the molten material exiting the forming device can be difficult to control

Methodology Applied
Scientific EffectGravity-driven flow: Gravitation

Data Source

PatentUS20250353775A1Methods and apparatus for manufacturing a glass ribbon
Publication Date: 2025.11.20 CORNING INC
  • US20250353775A1 patent drawing
  • US20250353775A1 patent drawing
  • US20250353775A1 patent drawing

AI summary

A glass manufacturing apparatus includes a forming device including a trough extending along a trough axis between an inlet end and an opposing end of the forming device. The forming device includes a pair of weirs. The forming device includes a diverter positioned within the trough for diverting a molten material over at least one weir of the pair of weirs. The diverter includes a first edge contacting a bottom surface of the trough. The first edge includes an upstream diverter edge segment and a downstream diverter edge segment nonlinear with the upstream diverter edge segment. The downstream diverter edge segment is positioned downstream from the upstream diverter edge segment. Methods of manufacturing glass are provided.