Cyclone Separator for Cutting Chip Collection

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Solution Overview

Problem

Existing dust-collecting devices for cutting operations, such as table saws, face issues with clogged fabric bags reducing efficiency and requiring manual dislodging of chips, which can lead to unsanitary disposal and operational difficulties during storage due to the bag's design extending upward, necessitating additional space and cumbersome removal.

Innovation Solution

A dust-collecting system utilizing a cyclone separator that separates cutting chips from carrier air using gravity and centrifugal force, eliminating the need for fabric bags and allowing for sanitary chip disposal and improved operational handling by integrating a cyclone unit within the dust-collecting device, which can pivot and adjust to maintain efficiency during cutting operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the dust-collecting bag is beaten or struck to dislodge clogged dust, then the cutting chips can be removed from the fabric mesh, but the cutting chips fly through the air and cannot be disposed of in a sanitary controlled manner

Engineering Contradiction:

Improvechip removal operationVSAvoidunsanitary chip disposal

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

A controlled intermediary mechanism (discharge port with cover) is introduced between the chip collection bag and the external environment. This allows chips to be removed in a controlled manner without direct exposure to air, preventing unsanitary disposal while maintaining ease of operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The manual beating or striking operation is replaced with a controlled discharge mechanism that uses gravity and a simple cover opening system to remove chips. This substitution eliminates the harmful air-borne chip dispersion while maintaining operational simplicity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If the dust-collecting bag is connected to the blade case via a cylindrical tubular mount portion, then the dust-collecting device can be assembled, but the dust-collecting bag extends rearward from the blade case and moves upward when the saw unit is pivoted downward, causing handling difficulties and requiring large storage space

Engineering Contradiction:

Improveassembly of dust-collecting deviceVSAvoidhandling during storage and transportation

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The dust-collecting bag is designed with flexible connections and a movable mounting arrangement that allows it to adapt its position during saw unit pivoting. The bag can dynamically adjust its orientation to prevent upward extension when the saw unit is in the downward cutting position, improving handling and storage.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The dust-collecting bag is nested within or alongside other components of the saw unit in a compact arrangement. When not in use, the bag can be positioned within the blade case or adjacent structures, reducing the overall space requirement and eliminating the need for large storage areas.

Inventive Principle:

Principle #7Nested doll (Nesting)

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

The cyclone separator effectively collects cutting chips without clogging, enabling improved dust collection efficiency, sanitary disposal, and facilitating easier storage and handling of cutting devices by eliminating the need for fabric bags and reducing the storage space requirements.

Implementation Method 1

separates the cutting chips from the carrier air by utilizing the force of gravity

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

After separation the carrier air is discharged upward from the separator body via the air discharge pipe. The separated cutting chips are discharge downward from the separator body via the cutting chip discharge pipe

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS7559268B2Dust-collecting devices and cutting devices with the dust-collecting devices

Publication Date: 2009.07.14 MAKITA CORP

AI summary

A dust-collecting device for collecting cutting chips produced by a cutting device has a separator for separating the cutting chips from the carrier air by utilizing the force of gravity upon the cutting chips. A dust container collects the cutting chips separated by the separator. The separator includes a separator body having a cutting chip discharge pipe and an air discharge pipe. After separation the carrier air is discharged upward from the separator body via the air discharge pipe. The separated cutting chips are discharge downward from the separator body via the cutting chip discharge pipe. The dust container is connected to the cutting chip discharge pipe.