Rotating Bead Feeder with Radial Passageways for Plug-Space-Plug Filters
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Solution Overview
Problem
Existing bead feeder technologies are inefficient and complex in serially delivering beads from a bulk supply to the interior spaces of plug-space-plug cigarette filters, particularly in ensuring precise and high-speed delivery of beads between cellulose acetate plugs during filter production.
Innovation Solution
A bead feeder system comprising a rotating bead supply wheel with radially extending passageways, a feed plate, a metering plate, and a bead transfer wheel, utilizing vacuum assistance for efficient bead alignment and transfer, ensures that each bead is delivered accurately and quickly to the spaces between cellulose acetate plugs, with a metering plate controlling bead discharge and a stationary stripper aiding in bead removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a bulk supply bead feeder is used to deliver beads to plug-space-plug filter cavities, then beads can be supplied continuously, but it becomes difficult to ensure precise delivery of exactly one bead per cavity at high speed
Solution Approach 1:
The bead supply system is segmented into multiple radial passageways (typically 8-16), with each passageway independently delivering beads to corresponding cavities. This segmentation allows parallel processing of multiple cavities simultaneously, achieving high-speed delivery while maintaining precision through dedicated passageways for each cavity position.
Solution Approach 2:
Radial passageways act as intermediaries between the central bulk supply and the peripheral cavity positions. These passageways guide and control bead flow, ensuring that beads are delivered precisely to the correct cavity while maintaining continuous high-speed operation. The passageways mediate between the continuous supply and discrete placement requirements.
2Manufacturing precision
If multiple components are used to ensure precise bead delivery, then bead placement accuracy improves, but the device complexity increases
Solution Approach 1:
Multiple functions are merged into a single integrated rotating assembly. The central supply bowl, radial passageways, and discharge mechanisms are combined into one cohesive structure that rotates as a unit. This merging reduces the number of separate components and connections needed, simplifying the overall device while maintaining precise bead delivery capability.
Solution Approach 2:
The radial passageways serve multiple functions simultaneously: they guide beads from the center, position beads for discharge, and synchronize with the rotating mechanism for precise timing. This multi-functionality reduces the need for separate dedicated components for each function, thereby reducing device complexity while maintaining precision.
3Device complexity
If a simple bead delivery mechanism is used, then device complexity is reduced, but the reliability of precise bead delivery at high speed deteriorates
Solution Approach 1:
The system uses dynamic rotation of the entire passageway assembly to achieve precise bead delivery. The rotating mechanism provides natural synchronization between bead discharge timing and cavity positioning, eliminating the need for complex static positioning mechanisms. This dynamic approach maintains reliability while keeping the structure relatively simple.
Solution Approach 2:
The rotating passageway system operates on periodic cycles, with each passageway delivering beads to its corresponding cavity at regular intervals during rotation. This periodic action ensures consistent and reliable bead delivery to each cavity, maintaining high precision through rhythmic, predictable timing rather than complex control mechanisms.
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
The system enables high-speed, efficient, and trouble-free delivery of beads to the filter cavities, ensuring precise placement and reducing operational complexity, thereby enhancing the production efficiency of plug-space-plug cigarette filters.
Implementation Method 1
Vacuum may be used to draw and hold the beads in the pockets of the transfer wheel until the beads are released from the wheel.
Data Source
AI summary
A bead feeder serially delivering beads to a downstream location comprises a bead supply wheel connected to rotate about a vertical axis. The bead supply wheel includes a bead supply bowl and a plurality of radially and outwardly extending bead passageway connected to rotate with the bowl and dimensioned to receive a single line of beads. A plurality of openings in the bead supply bowl is spaced around a lower portion thereof with the openings in alignment with the radially and outwardly extending passageways each of which has an outer exit end. A metering plate is connected to rotate about the same vertical axis as the bead supply wheel, and metering plate has a plurality of equally spaced apart openings directly below the outer ends of the passageways for receiving the lowermost beads in the passageways. The metering plate rotates at a slightly slower or slightly faster speed than the bead supply wheel so that vertical alignment of an outer exit end of a particular passageway and an opening in the metering plate only occurs once for each revolution of the bead supply wheel. A drop off is provided for the removal of beads away from the metering plate.