Spout Assembly Rib and Protrusion for Stable Slit Formation
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Solution Overview
Problem
Existing spout assemblies for packaging containers face challenges in achieving a stable quality for the band portion, which is crucial for reliable operation and tamper-evident functionality.
Innovation Solution
The spout assembly incorporates a rib that connects the peripheral wall to the band portion, preventing the band and cap from bending inward during slit formation. This design ensures stable formation of the slit and maintains the band portion's quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the slit is formed in the band portion and peripheral wall during manufacturing, then the cap can be separated from the spout when removed, but the band portion and peripheral wall may bend inward causing unstable slit formation
Solution Approach 1:
The protrusion acts as an intermediary support element between the cutter blade and the band portion/peripheral wall. During slit formation, the protrusion prevents the band portion and peripheral wall from bending inward by providing a mechanical stop, thereby ensuring stable and precise slit formation without compromising the ease of manufacturing
Solution Approach 2:
The protrusion provides preliminary support to counteract the inward bending force that occurs during slit formation. By positioning the protrusion below the slit in the axial direction, it preemptively prevents deformation before the slit is fully formed, ensuring manufacturing precision is maintained
2Reliability
If the band portion is connected to the cap to fix it to the spout, then the spout assembly has tamper-evident functionality, but the quality of the band portion is unstable
Solution Approach 1:
The protrusion serves as a mediator that stabilizes the band portion during the critical slit formation process. By preventing inward bending, it ensures consistent band portion quality while maintaining the tamper-evident functionality that relies on the band portion's structural integrity
3Manufacturing precision
If the rib connects the peripheral wall to the band portion, then the band portion quality is stabilized, but the structure becomes more complex
Solution Approach 1:
The rib is merged with the protrusion as an integrated structural feature. The protrusion extends from the spout and includes the rib that connects to the band portion, combining multiple functions (support during slit formation and structural connection) into a single element, thereby stabilizing band portion quality without significantly increasing overall structural complexity
Data Source
AI summary
A spout assembly a spout, a cap, a band portion, and a rib. The spout has a side wall having a cylindrical shape, an external thread, and a flange. The cap has a top plate, a peripheral wall connected to an outer peripheral edge of the top plate, and an internal thread screwed to the external thread. The band portion is connected to an end of the peripheral wall to fix the cap to the spout at a position between the peripheral wall and the spout. The rib connects the peripheral wall to the band portion and protrudes toward an inside of the cap from the inner peripheral surface at an end portion of the peripheral wall and an inner peripheral surface of the band portion. The spout further has a protrusion provided on the side wall to restrict movement of the cap and the band portion.