Thumper and Feed Wheel Gear Timing via Self-Service Assembly
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Solution Overview
Problem
Automated banking machines face challenges in timing thumper wheels and feed wheels accurately, leading to inefficiencies in currency dispensing and handling.
Innovation Solution
The implementation of a thumper and feed wheel assembly with a timing technique, including dowel pins, temporary pins, and a method for aligning and assembling the thumper and feed wheel gears, ensures proper timing and synchronization of the wheels, along with a light pipe system for detecting sheet skew and blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional assembly methods are used for thumper and feed wheel gears, then manufacturing process is simpler, but timing precision and synchronization accuracy deteriorate
Solution Approach 1:
The thumper wheel assembly is designed to be self-timing through its direct mounting on the feed wheel shaft. The feed wheel gear and thumper wheel gear are both mounted on the same shaft, automatically ensuring proper timing synchronization without requiring complex external timing mechanisms or adjustment procedures.
Solution Approach 2:
The assembly is divided into modular components (feed wheel gear, thumper wheel gear, stripper wheel gear) that can be assembled independently on separate shafts, then integrated together. This segmentation allows each component to be precisely manufactured and timed independently before final assembly.
2Ease of manufacture
If separate assembly of thumper and feed wheel gears is used, then ease of manufacture is improved, but timing synchronization deteriorates
Solution Approach 1:
The thumper wheel assembly is designed to be self-timing through its direct mounting on the feed wheel shaft. The feed wheel gear and thumper wheel gear are both mounted on the same shaft, automatically ensuring proper timing synchronization without requiring complex external timing mechanisms or adjustment procedures.
Solution Approach 2:
The feed wheel shaft combines multiple functions by simultaneously supporting the feed wheel gear and the thumper wheel gear. This merging of components on a common shaft ensures that rotational position and timing are inherently synchronized, eliminating the need for separate timing adjustments.
3Manufacturing precision
If complex timing mechanisms are added to thumper and feed wheels, then timing accuracy is improved, but device complexity increases
Solution Approach 1:
The thumper wheel assembly is designed to be self-timing through its direct mounting on the feed wheel shaft. The feed wheel gear and thumper wheel gear are both mounted on the same shaft, automatically ensuring proper timing synchronization without requiring complex external timing mechanisms or adjustment procedures.
Solution Approach 2:
The timing function is extracted from a separate complex timing mechanism and integrated directly into the wheel assembly structure itself. By mounting both gears on the same shaft, the timing synchronization is inherent to the basic mechanical structure rather than requiring additional dedicated timing components.
Data Source
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AI summary
Described herein are automated banking machine cassette modules and cassettes. The cassette module may include but is not limited to a divert cassette positioned for easy access and a light pipe system for detecting when sheets are entering or leaving a cassette. The cassette may include but is not limited to a cassette with an ink staining that does not reduce the capacity of the cassette, a torsion spring assembly coupled with a push plate in a cassette, a thumper and feed wheel assembly, and a method of assembling a thumper and feed wheel assembly that provides for proper timing of the feed wheels with the thumper wheels.