Clutch-Driven Conveyor Flights for Lightweight Article Spacing
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Solution Overview
Problem
Conveyor systems face challenges in maintaining uniform spacing of lightweight articles, such as envelopes, due to cam-actuated flights rotating them to the extended position without sufficient frictional contact, leading to disrupted positioning for reliable merging or other applications requiring uniform product spacing.
Innovation Solution
A conveyor system featuring a clutch mechanism coupled to flights with pivot members and projections that rotate from a retracted to an extended position using a limited angular range, ensuring proper spacing and blocking of articles, with a clutch mechanism inducing a moment to rotate the flight from the retracted to the extended position, and a spring-loaded clutch arrangement to manage torque and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cam-actuated flights are used to rotate projections from retracted to extended position, then article spacing is achieved, but lightweight articles may be rotated without sufficient frictional contact causing disrupted positioning
Solution Approach 1:
The patent changes the actuation mechanism from cam-actuated to clutch-driven, fundamentally altering how the flight projection is rotated. The clutch mechanism provides controlled torque that can be adjusted to match the weight characteristics of different articles, ensuring reliable engagement without disrupting lightweight article positioning.
Solution Approach 2:
The clutch mechanism introduces a dynamic, adaptive system that can respond to different load conditions. Unlike the fixed cam action, the clutch can modulate its engagement based on the frictional contact conditions, providing sufficient torque for heavier articles while avoiding excessive force that would disrupt lightweight articles.
2Force
If cam action provides sufficient torque to rotate flights, then extended position is achieved, but lightweight articles may be left stranded leaning from the top of the flight
Solution Approach 1:
The patent replaces the cam-based mechanical actuation system with a clutch-driven system. This substitution allows for more controlled and adjustable torque application, preventing the excessive force that causes lightweight articles to strand and lean on the flight projection.
Solution Approach 2:
The clutch mechanism enables dynamic adjustment of torque parameters, allowing the system to apply just enough force to rotate the flight projection to the extended position without applying excessive force that would cause lightweight articles to lose frictional contact and strand.
3Manufacturing precision
If regular positioning of articles is maintained for reliable merging, then uniform spacing is achieved, but lightweight articles disrupt this positioning due to insufficient frictional contact
Solution Approach 1:
The clutch-driven mechanism allows for parameter adjustment in torque application, enabling the system to accommodate the varying frictional contact conditions of lightweight articles while maintaining uniform spacing. The clutch can be tuned to provide appropriate engagement force without disrupting the positioning of lightweight items.
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 solution effectively maintains uniform spacing and prevents articles from being stranded, ensuring reliable merging and spacing of lightweight items by adjusting torque and friction, thereby addressing the issue of disrupted positioning in conveyor systems.
Implementation Method 1
The clutch mechanism rotates by contact with the engagement surface as the conveyor belt advances in the direction of belt travel. The rotation induces a moment on the flight about the axis.
Implementation Method 2
The rotation induces a moment on the flight about the axis. The moment is directed to rotate the projection about the axis from the retracted position to the extended position.
Data Source
Figure 1
Figure 2
Figure 3A~4
AI summary
A belt conveyor having clutch-driven flights (36) for extremely low-torque operation. The flights have pivot members (44) that rotate about an axis over a limited range of angles. A clutch mechanism includes a spring (58) pushing a clutch wheel (32) against a pivot member. The clutch wheel is arranged to rotate as the conveyor belt advances. Prictional contact between the rotating wheel and the pivot member imparts a moment on the flight to raise it to an extended position. When the flight is encumbered even by a light load, the low-torque mechanism automatically slips to prevent the flight from rising to the extended position.