Gap-Sealed Rotor-Stator Channel System for Glass Container Delamination
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Solution Overview
Problem
Conventional glass processing devices face challenges in producing borosilicate glass containers with reduced delamination tendency, as they suffer from unpredictable gas flow distribution and sodium borate evaporation, leading to surface alkalinity and thermal stress issues.
Innovation Solution
A rotor-stator channel system design that ensures a gap-sealed, laminar gas flow into the glass container, with a control device to regulate the gas stream, reducing delamination by maintaining consistent flow and minimizing sodium migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If gas flow is introduced into the glass container to support the bottom and prevent sagging, then the dimensional stability of the glass container is improved, but unpredictable gas flow distribution occurs leading to delamination and surface alkalinity
Solution Approach 1:
The patent applies local quality by providing different functional zones within the gas introduction system. The distribution plate features multiple gas introduction openings arranged in specific patterns, with each opening providing localized gas flow to specific regions of the glass container bottom. This ensures uniform support across the entire bottom surface while preventing localized overheating or excessive pressure that could cause delamination.
Solution Approach 2:
The distribution plate serves as an intermediary component between the gas source and the glass container bottom. It mediates the gas flow by distributing it uniformly across multiple openings, transforming the concentrated gas flow from the manifold into a diffuse, evenly distributed flow pattern that supports the glass bottom without causing localized damage or delamination.
2Shape
If compressed air is blown into the glass container during blow molding to shape the glass, then the glass container takes the desired shape, but wall thickness varies greatly causing optical distortions
Solution Approach 1:
The distribution plate creates local quality variations in gas flow pressure and velocity across different regions of the glass container bottom. By strategically positioning gas introduction openings and adjusting their individual flow characteristics, the system ensures uniform wall thickness distribution while maintaining the desired overall container shape, preventing optical distortions.
3Stability of the object's composition
If the gas flow rate is increased to improve bottom support, then the dimensional stability improves, but sodium borate evaporation increases leading to surface alkalinity and delamination
Solution Approach 1:
The distribution plate acts as a flow mediator that reduces gas velocity while maintaining support effectiveness. By distributing the gas flow through multiple openings, the system achieves the same bottom support effect with lower individual flow rates, preventing sodium borate evaporation and the associated harmful effects of surface alkalinity and delamination.
Solution Approach 2:
The gas flow system is segmented into multiple independent gas introduction openings in the distribution plate. This segmentation allows the total gas flow to be divided into many smaller streams, each providing localized support without exceeding the velocity threshold that would cause sodium borate evaporation and delamination.
4Device complexity
If a conventional channel system with gaps is used to guide gas flow, then the device complexity is reduced, but the gas flow becomes unpredictable causing delamination
Solution Approach 1:
The distribution plate serves as a stationary intermediary component that receives gas from the rotating manifold and redistributes it through multiple fixed openings. This design eliminates the need for complex rotating seals or gap-tolerant mechanisms, achieving both structural simplicity and flow consistency by using the distribution plate as a flow mediation interface between moving and stationary parts.
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
Significantly reduces the delamination tendency of glass containers while maintaining surface alkalinity and thermal stability, ensuring reproducible quality and safety for pharmaceutical applications.
Implementation Method 1
the gas flowing from the free end of the channel system concentrically to the axis of rotation of the glass container through the open end enters the glass container and flows in the direction of the base, with the gas flow opening up somewhat in the radial direction and dividing in the base area, so that it flows radially outward parallel to the base
Implementation Method 2
the stator and the rotor are designed in such a way that they form a gap seal for sealing the channel system in the lead-through section
Implementation Method 3
The direction of flow then changes such that the gas stream flows parallel to the side wall and back to the open end and exits the glass container
Data Source
Figure 1a~1c
Figure 2
Figure 3a~3c
AI summary
The present invention relates to a floor machine (10) for a glass processing device (38) for producing glass containers (42) from a tubular glass, comprising one or more holding units (16) for holding the glass container (42) or the tubular glass, wherein the holding units (16) are rotatably mounted about a pivot axis (R) of the floor machine (10) in order to guide the glass container (42) or the tubular glass to different processing positions (A), a pressure source (20) for providing a gas flow, a channel system (18) communicating with the pressure source (20) for guiding the gas flow to the holding units (16) and for introducing the gas flow into the tubular glass or into the glass container (42), wherein the channel system (18) is designed to be gap-free. Furthermore, the invention relates to a glass processing device (38) with the corresponding floor machine (10) and a method for producing glass containers (42) from a tube of glass using the glass processing device (38).