Half Cutter Spacer Gap Control

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Solution Overview

Problem

Existing half cut apparatuses face challenges in maintaining consistent gap dimensions between the cutting blade and the receiving table, leading to variations in cutting performance and inadequate half-cutting of objects.

Innovation Solution

The half cutter design incorporates a blade, a blade holder, a blade receiving member, a spacer that generates a gap between the blade and the receiving member, and a fixing member to stabilize the spacer, ensuring a consistent gap and precise cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If step portions are formed by press working in the receiving table, then the structure can be manufactured, but variation of heights of the step portions occurs making it difficult to reduce height variation

Engineering Contradiction:

Improvemanufacturability of step portionsVSAvoidheight consistency of step portions

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

A spacer is introduced as an intermediary component between the blade and the blade receiving member to generate and maintain the cutting gap. The spacer is fixed to the blade holder or blade receiving holder using a fixing member, serving as a mediator that ensures consistent gap dimensions without relying on press-worked step portions.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The cutting apparatus is segmented into distinct functional components: the blade, the blade holder, the blade receiving member, and the spacer as a separate gap-generating element. This segmentation allows the spacer to be independently positioned and fixed, ensuring consistent gap dimensions while maintaining manufacturing flexibility.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If the cutting blade approaches the receiving table, then cutting action is enabled, but variation in gap dimension occurs leading to inadequate half-cutting

Engineering Contradiction:

Improvecutting action capabilityVSAvoidgap dimension consistency

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The spacer acts as a mediator that maintains a consistent gap dimension between the blade and blade receiving member during the cutting operation. By fixing the spacer to the blade holder or blade receiving holder, the gap dimension is standardized, enabling reliable half-cutting performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The gap dimension parameter is controlled by the thickness of the spacer. By selecting a spacer with a specific thickness and fixing it in position, the gap dimension is standardized and maintained consistently during cutting operations, resolving the variation issue.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If no spacer is used, then the structure is simpler, but the gap dimension varies making appropriate half-cutting impossible

Engineering Contradiction:

Improvestructural simplicityVSAvoidgap dimension control

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The spacer is introduced as a simple intermediary component that provides gap dimension control without significantly increasing device complexity. The spacer is fixed using a fixing member to the blade holder or blade receiving holder, maintaining structural simplicity while achieving precise gap control for appropriate half-cutting.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11285742B2Half cutter and tape printing apparatus

Publication Date: 2022.03.29 SEIKO EPSON CORP

AI summary

A half cutter includes a blade, a blade holder to which the blade is fixed, a blade receiving member which the blade approaches to or departs from, a blade receiving holder to which the blade receiving member is fixed, a spacer which is provided to at least one of the blade and the blade receiving member and generates a gap between the blade and the blade receiving member when the blade approaches the blade receiving member, and a fixing member that fixes the spacer to at least one of the blade holder and the blade receiving holder.