Deflectable Stacker Wheel Segments for Delayed Value Document Insertion

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Solution Overview

Problem

Stacking devices for value documents, such as banknotes, face issues with delayed arrival times leading to potential damage or misalignment of documents due to incorrect insertion into stacker compartments.

Innovation Solution

A stacking device with a rotatable stacker wheel featuring deflectable segments and a deflecting unit that modifies the size of receiving regions dynamically or statically to accommodate delayed documents, ensuring reliable insertion by extending the insertion time window.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the stacker wheel rotates at a fixed speed with fixed receiving regions, then the stacking process is simple and fast, but delayed value documents may hit stacker fingers or fly past the stacker, causing damage or misalignment

Engineering Contradiction:

Improvereliability of value document insertionVSAvoidcomplexity of stacker wheel structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The stacker wheel segments are made deflectable rather than fixed, allowing the receiving regions to dynamically adjust their size. The deflecting unit actively modifies the position of stacker wheel segments in real-time to extend the insertion time window, transforming a static structure into a dynamic one that adapts to varying document arrival times.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the physical parameter of the receiving region size by deflecting stacker wheel segments. The deflecting unit alters the position and orientation of segments, thereby modifying the spatial dimensions of receiving regions to accommodate delayed documents without changing the overall stacker wheel rotation speed.

Inventive Principle:

Principle #35Parameter changes

2Loss of time

If the receiving region size is increased to accommodate delayed documents, then the insertion time window is extended, but the stacker wheel structure becomes more complex with deflectable segments

Engineering Contradiction:

Improveinsertion time windowVSAvoidcomplexity of stacker wheel structure

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The receiving region size is made dynamic through deflectable stacker wheel segments that can be actively adjusted by the deflecting unit. This allows the insertion time window to be extended on-demand rather than being fixed, optimizing the balance between time accommodation and structural simplicity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The deflectable stacker wheel segments automatically return to their original position after being deflected, utilizing elastic recovery or mechanical return mechanisms. This self-service characteristic reduces the need for complex control systems to manually reset each segment, simplifying the overall device complexity.

Inventive Principle:

Principle #25Self-service

3Device complexity

If fixed stacker wheel segments are used, then the device structure is simple, but delayed value documents may cause damage by hitting stacker fingers or misalignment by flying past the stacker

Engineering Contradiction:

Improvesimplicity of stacker wheel structureVSAvoiddamage to value documents

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The deflectable stacker wheel segments act as a cushioning mechanism that can absorb timing variations before they cause harm. By allowing segments to deflect, the system prevents delayed documents from impacting fixed fingers, thereby cushioning against potential damage before it occurs.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The invention converts the potential harmful impact of delayed documents into a beneficial deflection motion. Instead of rigid fingers that cause damage upon impact, the segments are designed to deflect smoothly, transforming what would be a harmful collision into a controlled, damage-free insertion process.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

Ensures safe and reliable stacking of value documents by adjusting the receiving regions to accommodate delayed arrivals, maintaining document sequence and preventing damage, thus enhancing the stacking process.

Implementation Method 1

the rotatable stacker wheel has a plurality of deflectable stacker wheel segments... a deflecting unit which is designed to deflect each of the stacker wheel segments individually

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250223130A1Device and method for stacking value documents

Publication Date: 2025.07.10 GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH

AI summary

A device and a method are for stacking value documents. The device includes a stacker unit for receiving the value documents and a conveyor unit for conveying the value documents into the stacker unit. The stacker unit has a rotatable stacker wheel for receiving the value documents, wherein the rotatable stacker wheel has a plurality of deflectable stacker wheel segments which are provided along the circumference of the rotatable stacker wheel in a mutually spaced manner. Each of the deflectable stacker wheel segments defines a respective receiving region for receiving at least one of the value documents. The device additionally has a deflecting unit which is designed to deflect each stacker wheel segment individually to thus modify the size of the respective receiving region associated with the stacker wheel segment.