Consumable Unit Closure Placement Using Staggered Punch Protrusions
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Solution Overview
Problem
There is a need for an efficient apparatus and method to manufacture consumable units for inhalation devices that involve providing a dose of aerosolizable material to a pod, positioning a closure over the pod end, and securing the closure to the pod, which must be done quickly and accurately for multiple units.
Innovation Solution
The apparatus includes a machine tray support, a clamp, and a punch with varying height protrusions to position and secure sub-components on consumable units, utilizing a platform for alignment and a punch to engage and separate sub-components from a support web, ensuring precise placement and securing of closures on the units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-height punch is used to separate sub-components from the support web, then the structure is simple, but the engagement timing is simultaneous across all components which may cause misalignment or uneven separation
Solution Approach 1:
The punch is segmented into multiple protrusions with different heights (first protrusions and second protrusions), allowing different parts of the support web to be engaged at different times during the separation process. This segmentation enables precise control over the separation sequence of sub-components.
Solution Approach 2:
Different regions of the punch have different local properties (heights) tailored to the specific requirements of different sub-components. The first protrusions engage one set of sub-components while the second protrusions engage another set, with each protrusion height optimized for its specific engagement timing and force requirements.
2Productivity
If multiple sub-components are separated simultaneously, then the process is fast, but the alignment and secure attachment of each component may be compromised
Solution Approach 1:
The separation process occurs in periodic stages corresponding to the different heights of the protrusions. As the punch moves through the support web, sub-components are separated in a controlled sequence rather than all at once, with each height level engaging its corresponding sub-components at a specific moment in the periodic cycle.
Solution Approach 2:
The first protrusions engage and begin separating their corresponding sub-components before the second protrusions engage theirs. This preliminary action ensures that certain components are securely positioned before others are separated, maintaining alignment precision throughout the multi-stage process.
3Ease of manufacture
If the punch engages all sub-components at the same time, then the operation is simple, but the force distribution may be uneven causing potential damage or poor attachment
Solution Approach 1:
The punch force application is segmented into multiple height levels, distributing the separation force across different time points rather than applying it all simultaneously. This segmentation prevents excessive force concentration on any single sub-component while ensuring reliable attachment.
Solution Approach 2:
The protrusion heights serve as varying parameters that control the timing and magnitude of force application to different sub-components. By changing the height parameter, the system optimizes force distribution for each specific engagement point, improving attachment reliability.
Data Source
AI summary
Apparatus for positioning a sub component on a consumable unit for use with an inhalation device including a machine tray support for locating a machine tray of consumable units arranged in an array; a clamp holding a support web including an array of sub components in a position above the machine tray support; and a punch having protrusions configured to engage the array of sub components by displacement of the punch toward the machine tray support to separate the sub components from the support web and locate the sub components on the consumable units, wherein the protrusions include a first protrusion having a first height and a second protrusion having a second height, the second height being greater than the first height, so that the second protrusion engages a sub component before the first protrusion engages a sub component when the punch moves toward the machine tray support.