Paper Tissue Feeding Apparatus with Segmented Belt Channels
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Solution Overview
Problem
Existing apparatuses face challenges in ensuring reliable high-speed operation and flexibility in feeding stacked folded paper products, such as tissues, to packaging machines, often resulting in machine stoppages, product waste, and malfunctions due to the difficulty in combining speed, reliability, and constructive simplicity.
Innovation Solution
The apparatus employs a system with pairs of belts and collecting discs that utilize rotating chains with tabs to radially expel and group products onto an accumulation plate, followed by a cam device for compacting and evacuating stacks, allowing for continuous operation and flexible handling of varying stack sizes without speed limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If belt or chain conveyor systems are used to feed folded articles at high speed, then productivity is improved, but reliability deteriorates due to machine stoppages and malfunctions
Solution Approach 1:
The apparatus divides the feeding system into multiple independent working channels, each with its own collecting discs and evacuation means. This segmentation allows one channel to be serviced or stopped without affecting others, improving overall reliability while maintaining high productivity through parallel operation.
Solution Approach 2:
The patent introduces an intermediate accumulation plate where articles are temporarily deposited before final stacking. This intermediary buffer zone decouples the folding machine output from the packaging system input, allowing speed variations and preventing machine stoppages due to synchronization issues.
2Adaptability or versatility
If accumulation and counting units with collecting discs are used, then flexibility in stack sizing is improved, but device complexity increases
Solution Approach 1:
The collecting discs serve multiple functions: they collect articles from the folding machine, accumulate them in controlled quantities, and transfer them to the accumulation plate. This multi-functionality reduces the need for separate dedicated components, simplifying the overall device structure while maintaining flexibility.
Solution Approach 2:
The apparatus uses gravity-assisted article flow where articles naturally move from the collecting discs to the accumulation plate without requiring complex mechanical transfer mechanisms. This equipotential design minimizes active components and reduces structural complexity.
3Productivity
If high-speed operation is implemented, then productivity is improved, but reliability worsens due to product deformation and waste
Solution Approach 1:
The apparatus performs preliminary grouping and accumulation of articles on the accumulation plate before final stacking and packaging. This preliminary organization ensures articles are properly positioned and stabilized before high-speed handling, preventing deformation and waste during subsequent operations.
Solution Approach 2:
The system uses dynamic control of the evacuation means and stacking mechanism to adapt handling speeds and forces to the specific state of the product stack. This dynamic adjustment prevents excessive forces that could cause deformation while maintaining overall high-speed operation.
Data Source
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AI summary
The present invention concerns the high speed packaging of folded paper articles such as tissues, napkins and the like, and more precisely it concerns an apparatus for continuously feeding such articles, arranged in stacked groups(P, P1) coming from folding machines, towards packaging machines, for example with a rotating drum, arranged downstream.