Off-Center Expelling Mechanism for Lens Release

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Solution Overview

Problem

The existing methods for blocking and releasing optical lenses from block pieces are inefficient, particularly when using block materials that adhere strongly, making it difficult to simplify the delivery and release of the blocked lenses.

Innovation Solution

A device with an off-center expelling mechanism and a sequence of expelling pulses, combined with an ejector force, is used to facilitate the release of the blocked lens from the block piece and check means, such as a block ring, by acting indirectly on the lens or block material, producing vibrations and oscillations to loosen the block ring from the lens and block material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If block materials that adhere strongly are used to secure the lens during machining, then the lens holding stability is improved, but the release and removal of the blocked lens becomes difficult

Engineering Contradiction:
Improvelens holding stabilityVSAvoidrelease and removal ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The patent applies mechanical vibration through an expelling device that generates oscillating movements to loosen the block ring from the blocked lens. The vibration breaks the strong adhesion between the block material and the lens, enabling easy release and removal while maintaining strong holding during machining operations.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The expelling device operates with periodic expelling pulses that apply rhythmic forces to the blocked lens. This periodic action accumulates effect over time to overcome the strong adhesion of the block material, facilitating release without compromising the initial secure attachment.

Inventive Principle:
Principle #19Periodic action

2Device complexity

If a centralized ejector is used to release the block piece, then the release mechanism is simple, but it cannot effectively separate the block ring from the blocked lens when strong adhesion is present

Engineering Contradiction:
Improverelease mechanism simplicityVSAvoidblock ring separation ease
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

Instead of relying solely on centralized ejection, the patent introduces mechanical vibration through the expelling device. This vibration component addresses the adhesion problem directly by disrupting the bond between the block ring and blocked lens, complementing the centralized ejector's function.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The expelling device acts off-center on the blocked lens, creating asymmetric force distribution. This asymmetric action generates rotational and oscillating movements that enhance the separation effect, making the release process more effective while maintaining relatively simple device structure.

Inventive Principle:
Principle #4Asymmetry

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

This approach simplifies and supports the release and removal of the blocked lens, even with strongly adhering block materials, by applying expelling pulses and ejector forces in different regions, improving the loosening and release process.

Implementation Method 1

a sequence of expelling pulses is produced which act directly or indirectly on the blocked lens. In this way, especially vibration or oscillation is produced

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS9168628B2Device for blocking a lens
Publication Date: 2015.10.27 SCHNEIDER GMBH & CO KG
  • US9168628B2 patent drawing
  • US9168628B2 patent drawing

AI summary

A device and a method for blocking of an optical lens and to release the blocked lens by an expelling pulse being applied off-center to a block ring which is assigned to the lens.