Diagnostic Reagent Strip Cutting Apparatus with Guide Member

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Solution Overview

Problem

Conventional strip cutting methods for diagnostic reagent kits often result in cut strips being bent, twisted, or stuck, leading to high defect rates and inefficient manufacturing due to the use of two rollers that can cause deformation and interference during the cutting process.

Innovation Solution

A strip cutting apparatus with two shafts, each equipped with alternating knives and spacers, and a guide member that supports the diagnostic reagent between the shafts to prevent deformation, twisting, and bending, along with adjusting screws for precise alignment and concentricity adjustment to ensure accurate cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If two rollers are used to cut diagnostic reagent strips, then cutting action is achieved, but the cut strips become bent, twisted, or stuck causing deformation

Engineering Contradiction:

Improvecutting efficiencyVSAvoidstrip shape accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The cutting system is divided into multiple independent knives (first knife, second knife, third knife, fourth knife) arranged in specific patterns on rotating shafts, allowing segmented cutting actions that prevent deformation while maintaining productivity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A guide member is introduced as an intermediary component between the cutting knives and the diagnostic reagent strips. The guide member supports the strips during cutting, preventing them from bending, twisting, or sticking to the rollers, thus ensuring shape accuracy while maintaining cutting efficiency

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If conventional cutting methods are used, then manufacturing process is simple, but defect rate increases due to bent and twisted strips

Engineering Contradiction:

Improveprocess simplicityVSAvoidstrip quality

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The guide member serves as a mediator that supports the diagnostic reagent strips during the cutting process, preventing deformation and reducing defect rates while maintaining relatively simple manufacturing processes

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent adjusts parameters such as the arrangement of multiple knives on rotating shafts, the angle of knife blades, and the positioning of the guide member to optimize cutting quality and reduce defects while maintaining process simplicity

Inventive Principle:

Principle #35Parameter changes

3Speed

If strips are cut without support, then cutting speed is maintained, but strips ride up and become deformed

Engineering Contradiction:

Improvecutting speedVSAvoidstrip shape accuracy

Core Design Contradiction:

SpeedVSManufacturing precision

Solution Approach 1:

The guide member is positioned between the rotating shafts and the diagnostic reagent strips to provide continuous support during cutting, preventing strips from riding up or deforming while maintaining high cutting speeds through the efficient knife arrangement

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11858772B2Strip cutting apparatus for diagnostic reagent kit

Publication Date: 2024.01.02 LEE SEOKHYUN

AI summary

An apparatus for cutting diagnostic reagent strips includes first and second shafts with facing knife blades and spacers. A guide between the shafts ensures accurate, defect-free cutting. Adjusting screws fine-tune the shaft interval for enhanced cutting.