Accumulator Loader Transfer Conveyor for Web Material Log Quality
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Solution Overview
Problem
Existing processing lines face challenges in maintaining the quality of convolutely wound web material logs during transfer between upstream and downstream sections, particularly due to issues such as glue transfer, scuffing, and misshapen logs caused by contact between logs.
Innovation Solution
An accumulator system with a loader and transfer conveyor is introduced, allowing logs to be transferred one at a time, maintaining quality by preventing direct contact and using adjustable conveyors to match production rates, ensuring seamless transitions and selective delivery to downstream equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If logs are transferred in bulk or stacked during accumulation, then storage capacity and productivity are improved, but log quality deteriorates due to contact causing glue transfer, scuffing, and misshapen logs
Solution Approach 1:
The accumulator divides the log transfer system into separate individual transfer paths, with each log contained in its own bucket or on its own conveyor section. This segmentation prevents logs from contacting each other during storage and transfer, eliminating quality defects while maintaining productivity through parallel processing of multiple logs.
Solution Approach 2:
The patent introduces an intermediary mechanism (individual buckets or separate conveyor sections) between logs that would otherwise come into contact. This intermediary structure allows logs to be stored and transferred in close proximity without direct contact, resolving the contradiction between high-density storage and quality maintenance.
2Productivity
If logs are transferred quickly to maintain production rates, then productivity is improved, but log quality deteriorates due to increased risk of contact and damage
Solution Approach 1:
By segmenting the transfer system into individual log pathways, the patent enables high-speed transfer without the risk of logs contacting each other. Each segmented path can operate independently at optimal speed, maintaining both productivity and quality.
Solution Approach 2:
The system employs dynamic control of individual log transfer paths, allowing each log to be transferred at precisely controlled speeds and timing. This dynamic adjustment ensures logs move quickly when needed while preventing contact that would cause quality defects.
3Productivity
If multiple logs are transferred simultaneously to multiple downstream machines, then productivity and adaptability are improved, but system complexity increases
Solution Approach 1:
The patent segments the multi-path transfer system into modular, independent units. Each path to a downstream machine is a separate module that can be controlled independently, reducing overall system complexity while enabling simultaneous delivery to multiple machines.
Solution Approach 2:
The accumulator is designed with universal, interchangeable transfer paths that can be configured for different downstream machines and production requirements. This multi-functionality allows the same basic structure to serve multiple purposes, reducing complexity compared to custom-designed systems.
Data Source
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AI summary
A processing line processes logs of convolutely wound web material and has upstream and downstream sections. A main accumulator has buckets that receive, hold, and release logs. An input feeder receives logs from the upstream section and conveys them to a bucket of main accumulator. A loader has a loader accumulator and loader buckets that receive, hold, and release logs. A transfer conveyor between the main accumulator and the loader receives a log from the main accumulator bucket and conveys the log a loader bucket independently of the input feeder. The loader receives a log from the transfer conveyor. The loader conveys the log in the loader bucket to a discharge of the loader. The loader discharge discharges the log from the loader bucket to the downstream section of the processing line.