Card Separation Device Using Convex Flexible Drivers

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Solution Overview

Problem

Existing card separating devices are either expensive, prone to scratches and abrasions due to high friction, or have low separating speeds, making them unsuitable for efficient and reliable operation, especially in high-speed card processing applications.

Innovation Solution

A card separating device with a pre-separator featuring two drivers with convex, elastically flexible surfaces that rotate or pivot to gently extract cards from a stack, minimizing contact and friction, and a receptacle for controlled delivery to downstream processing stations, equipped with sensors and a controller for optimized card handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a friction roller is used to pull the bottom card out of the stack, then card separation is achieved, but the friction roller spins easily due to high stack weight causing scratches and abrasions on the card surface

Engineering Contradiction:

Improvecard separation capabilityVSAvoidscratches and abrasions on card surface

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent uses drivers with convex, curved surfaces instead of flat friction rollers. The curved surface distributes the separation force over a larger area and reduces point contact friction, preventing scratches and abrasions on the card surface while maintaining effective card extraction capability.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent changes the physical parameters of the separation element by using elastically flexible material for the convex surfaces. This material property allows the surface to deform and adapt to card edges, reducing friction and preventing damage during the separation process.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If a motor-driven endlessly revolving transport belt with a driver is used below the stack, then card separation is achieved, but the separating speed is relatively low due to the long distance the driver must cover

Engineering Contradiction:

Improvecard separation mechanismVSAvoidseparating speed

Core Design Contradiction:

ProductivityVSSpeed

Solution Approach 1:

The patent divides the card stack into individually separable units by positioning multiple drivers at different locations. Each driver handles a specific card extraction task independently, allowing parallel processing and significantly increasing the overall separating speed compared to a single long-travel driver.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses only the necessary portion of the card stack height for separation by positioning drivers to act on specific cards rather than requiring the entire stack to be processed sequentially. This reduces the effective travel distance and increases separation speed.

Inventive Principle:

Principle #16Partial or excessive action

3Productivity

If a slide driven by a motor-driven crank mechanism is used to guide the cardboard sheet stack from below, then card separation is achieved, but large inertial forces must be overcome at the reversal points requiring damping devices

Engineering Contradiction:

Improvecard separation mechanismVSAvoidinertial forces at reversal points

Core Design Contradiction:

ProductivityVSForce

Solution Approach 1:

The patent replaces the complex crank mechanism with a simpler direct-drive system using motor-driven rollers. This substitution eliminates the reversal points and associated inertial forces, reducing the need for damping devices and simplifying the overall mechanical system.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If the cardboard sheet stack is guided at an angle with greater surface pressure in the front support area, then card separation is achieved, but unwanted stripes or scratches appear on printed cards

Engineering Contradiction:

Improvecard separation capabilityVSAvoidstripes or scratches on printed cards

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent uses convex curved driver surfaces that make contact with cards along their edges rather than applying pressure to the front support area. This curvature geometry naturally directs force along the card edges, preventing stripes and scratches on the printed card surfaces while maintaining effective separation.

Inventive Principle:

Principle #14Spheroidality (Curvature)

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

Enables efficient and reliable card separation with minimal scratches or abrasions, allowing for high-speed operation and increased card throughput by reducing the weight-bearing pressure on individual cards, thus preventing unwanted marks and ensuring smooth card handling.

Implementation Method 1

sections of the convex driver surfaces are made of such an elastically flexible material that the card located between them is removed from the card stack

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP2632833B1Apparatus for separating cards supplied in a stack

Publication Date: 2015.01.21 MB AUTOMATION GMBH & CO KG

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AI summary

An apparatus (10) for separating cards (16) in a card stack (14) supplied in a card magazine (12) has a preliminary separator, (19) for conveying one or more cards out of the card magazine, and a holder (20) for accommodating the one or more cards conveyed out of the card magazine, wherein the holder discharges a single card in each case to a downstream processing station (VS).