Medical Glass Container Fire Blasting with Dual Roller Cooling
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Solution Overview
Problem
The existing fire blasting methods for medical glass containers using borosilicate glass are prone to breakage and deformation due to uneven heat distribution and poor thermal conductivity, leading to potential cracks and distortion during the manufacturing process.
Innovation Solution
A method involving a dual-roller system where the glass container is rotated between two parallel rollers with a point burner applied to the inner surface, ensuring even heat distribution and using rollers and abutment members with enhanced heat dissipation properties, such as graphite, to prevent deformation and breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a point burner is applied to the inner surface of the glass container to remove the deteriorated region, then the deteriorated region is effectively removed, but the glass container is prone to breakage and deformation due to uneven heat distribution and poor thermal conductivity
Solution Approach 1:
The patent divides the heating function into two separate components: a point burner for localized heating to remove deteriorated regions, and cooling rollers for localized cooling and support. This segmentation allows precise control of heat application while preventing thermal stress through simultaneous cooling, thereby removing deteriorated regions without causing breakage or deformation.
Solution Approach 2:
The cooling rollers serve as an intermediary element that not only cools the glass container but also provides mechanical support during the fire blasting process. The rollers act as a mediator between the heating process and the glass container, distributing thermal stress and preventing direct contact that could cause deformation, thus enabling safe removal of deteriorated regions.
2Manufacturing precision
If the glass container is rotated using a rotating device with rollers to uniformly apply the flame, then uniform heat application is achieved, but the poor thermal conductivity of glass causes high temperature concentration and expansion leading to compression stress and potential breakage
Solution Approach 1:
The patent employs periodic action through the rotation of the glass container on cooling rollers. The container is rotated to uniformly apply the flame across its surface, then cooled and supported by the rollers in a cyclic manner. This periodic heating and cooling process prevents temperature concentration and thermal stress accumulation, enabling uniform heat application without causing breakage.
Solution Approach 2:
The patent changes the thermal parameters by introducing active cooling through the rollers during the heating process. By controlling the temperature distribution through cooling while heating, the system prevents excessive temperature concentration and thermal expansion, thereby maintaining the strength of the glass container during uniform heat application.
3Productivity
If the same roller is continuously used for fire blasting, then productivity is maintained, but heat accumulates in the roller causing breakage and deformation of the glass container
Solution Approach 1:
The patent applies preliminary cooling action through the rollers before the glass container undergoes fire blasting. By pre-cooling and preparing the roller surface, the system prevents heat accumulation during continuous processing. This preliminary cooling ensures that even with continuous use, the rollers maintain adequate thermal performance, enabling continuous productivity without causing breakage or deformation.
Solution Approach 2:
The patent implements a feedback mechanism where the cooling rollers continuously remove heat from the glass container during rotation. This active cooling feedback prevents heat accumulation in both the container and the rollers, allowing continuous processing while maintaining reliability by preventing thermal stress and deformation that would otherwise occur with repeated use.
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
This approach effectively prevents breakage and deformation of medical glass containers by ensuring uniform heat dissipation and stable support during the fire blasting process, allowing for the mass production of high-quality containers.
Implementation Method 1
a processing process of heating a glass container (10) by applying a flame (31) ejected from a point burner (30) to a region deteriorated by processing in an inner surface (15) of the glass container (10)
Implementation Method 2
placing a glass container (10) on outer peripheral surfaces of a first roller (61) and a second roller (62)... while rotating the glass container (10) by rotating the first roller (61) and the second roller (62) around axis lines
Implementation Method 3
using rollers and abutment members with enhanced heat dissipation properties, such as graphite, to prevent deformation and breakage
Data Source
AI summary
To provide a method for manufacturing a medical glass container prevented from breakage and deformation and a fire blasting device.A method for manufacturing a medical glass container includes a processing process of placing a glass container 10 on the outer peripheral surface of each of a first roller 61 and a second roller 62, which are disposed side by side in such a manner that the axis lines are parallel to each other, so that the axis line of the glass container 10 is parallel to the axis lines of the first roller 61 and the second roller 62 and the entire outer peripheral surface in an inner surface 15 of the glass container 10 corresponding to a region deteriorated by processing is made to abut on the outer peripheral surface of each of the first roller 61 and the second roller 62, and then applying a flame ejected from a point burner 30 to the region deteriorated by processing in the inner surface 15 of the glass container 10 while rotating the glass container 10 by rotating the first roller 61 and the second roller 62 around the axis lines.