Integrally Molded Dispensing Valve Mechanical Interlock
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Solution Overview
Problem
Existing dispensing closures for fluid products face challenges in handling and assembly of dispensing valves, as they are typically separate components that require manual handling and assembly, which can be inefficient and prone to errors.
Innovation Solution
A dispensing valve with an annular ring of rigid molded plastic and a flexible resilient valve element integrally molded together, featuring mechanical interlocks such as through-openings and pegs, allowing for secure attachment and simplified handling and automated assembly, with the ring and valve element made from materials with different melt or softening temperatures for compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate components are used for the dispensing valve and mounting ring, then the valve can be assembled manually, but handling efficiency is reduced and assembly errors increase
Solution Approach 1:
The patent combines the dispensing valve and mounting ring into a single integrally molded component. The valve element and mounting ring are formed as one piece through integral molding, eliminating the need for separate assembly operations and reducing handling steps while maintaining functional separation between the valve element and mounting structures.
Solution Approach 2:
The integral molding process creates distinct functional segments within a single component. The valve element, mounting ring, and mechanical interlock features are formed as separate but integrated portions, allowing for automated assembly while maintaining the functional separation needed for proper valve operation.
2Reliability
If manual handling and assembly is used for separate valve components, then assembly can be performed, but it is prone to errors and inefficient
Solution Approach 1:
By merging the valve and mounting ring into a single integral component, the patent eliminates manual assembly operations entirely. The integrated design allows for automated handling and installation as a single unit, thereby improving both assembly accuracy by eliminating human error and assembly speed by enabling automated processing.
3Ease of manufacture
If the valve element and ring are molded separately, then each component can be optimized, but handling and automated assembly become difficult
Solution Approach 1:
The patent merges the valve element and mounting ring into a single integral molding, which facilitates automated assembly by providing a ready-to-install unit with built-in alignment and securing features. The mechanical interlock structures are formed as integral parts, enabling automated engagement with the closure body without requiring separate assembly operations.
Solution Approach 2:
The integral molding process performs preliminary assembly actions during the molding process itself. The mechanical interlock features such as pegs and recesses are formed in advance as integral parts, pre-aligning the valve element with the mounting ring structures, thereby enabling straightforward automated installation without requiring additional alignment or positioning steps.
4Reliability
If mechanical interlocks are added to secure the valve element, then assembly reliability improves, but manufacturing complexity increases
Solution Approach 1:
The mechanical interlock features are merged into the integral molding process itself rather than being added as separate components or post-molding additions. The pegs, recesses, and alignment features are formed as integral parts of the valve and mounting ring structure, allowing for reliable securing while maintaining manufacturing simplicity through a single molding operation.
Data Source
AI summary
A dispensing valve includes an annular ring of relatively rigid molded plastic construction and a flexible resilient valve element integrally molded with the ring. The ring and the valve element have at least one mechanical interlock to secure the valve element to the ring as the valve element is molded onto the ring. In some embodiments of the disclosure, the mechanical interlock includes openings in an inner periphery of the ring and pegs on the outer periphery of the valve element that are molded into the openings as the valve element is molded onto the ring.