Continuous Motion Product Grouping for Aseptic Bricks
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Solution Overview
Problem
Conventional packaging systems face challenges in efficiently metering, selecting, and grouping aseptic bricks or similar containers due to their rectangular shape and compressible materials, leading to issues like jamming, reduced production rates, and instability during handling, especially when using intermittent motions to create gaps for separation.
Innovation Solution
A system comprising a metering station with a serpentine path and a gapping wheel that creates initial gaps between aseptic bricks, followed by a grouping wheel that forms compact product groups, allowing continuous motion and stable transfer to a packaging machine without disrupting the flow, using adjustable lugs and cam tracks for varying product configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intermittent stop/start motions are used to create gaps between aseptic bricks for separation, then the bricks can be separated into groups, but the production rate is reduced and cycle time increases
Solution Approach 1:
The system creates preliminary gaps between bricks using a gap creation mechanism before the selector engages the bricks. This preliminary action allows the selector to operate continuously without stopping, maintaining high production rates while still achieving proper separation and grouping of bricks.
Solution Approach 2:
The selector and conveyor system operate continuously without intermittent stop/start motions. The gap creation mechanism ensures that bricks are properly spaced throughout continuous operation, eliminating idle time and maintaining maximum productivity while still achieving reliable separation.
2Reliability
If conventional selector systems engage aseptic bricks to create separation, then grouping is achieved, but jamming and bunching incidents increase
Solution Approach 1:
The system preliminarily creates uniform gaps between bricks before they reach the selector engagement point. This preliminary spacing prevents bricks from bunching together during selector operation, reducing jamming incidents while maintaining accurate grouping.
Solution Approach 2:
The gap creation mechanism applies localized spacing control at specific points in the conveyor path, creating optimal gaps only where needed for selector engagement. This localized quality control prevents excessive spacing that could cause bunching while ensuring proper separation for accurate grouping.
3Productivity
If aseptic bricks are fed in continuous line at high speed, then production rate is maintained, but bricks become tightly compacted with little or no gaps
Solution Approach 1:
The system extracts or removes the compaction effect by introducing a dedicated gap creation mechanism that actively spaces bricks apart. This extracted spacing function operates independently from the high-speed conveying, allowing continuous high-speed operation while maintaining necessary gaps between bricks.
Solution Approach 2:
The gap creation mechanism acts as an intermediary between the high-speed conveyor and the selector system. It mediates the transition by creating appropriate spacing without reducing conveyor speed, enabling both high productivity and proper brick separation for accurate grouping.
4Reliability
If waxy surfaces of bricks are present, then sealing is improved, but control and handling become difficult during velocity changes
Solution Approach 1:
The system maintains continuous motion without velocity changes or stop/start cycles, eliminating the handling difficulties associated with waxy surfaces during acceleration and deceleration. The continuous operation preserves sealing quality while avoiding control issues inherent in intermittent motion systems.
Data Source
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AI summary
A product selection and grouping system for the metering, selection, grouping and accumulation of varying size and/or configuration products into packs for packing in a substantially continuous motion operation is provided. The product selection and grouping system includes a metering station that receives the products in a substantially continuous line of flow from a product infeed, and meters the line of products to selectively form a series of spaces therebetween. The metered products are formed and fed to a product grouping conveyor in groups of sets a selected number of products, and are engaged by laning flights of a laning unit, which transfer the product groups to selected ones of a series of lanes defined along the product grouping conveyor. The groups of products are accumulated for transfer to a downstream packing machine.