PET Article Row Separator for Cohesive Grouping

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Solution Overview

Problem

Polyethylene terephthalate (PET) articles exhibit a 'sticking' effect, making high-speed handling difficult due to cohesive grouping, leading to lower packing density, increased transportation costs, and inefficiencies in unloading, filling, and palletizing, as well as issues in sheet unrolling and de-nesting during manufacturing and packaging.

Innovation Solution

An apparatus and method featuring a first collection area with a conveying device that directs articles to a second collection area, where a selectably movable barrier and separator maintain spacing between rows, using pressurized gas and actuators to control movement and separation, ensuring efficient handling and processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If articles are conveyed in high-speed handling, then productivity is improved, but articles stick together due to cohesive grouping

Engineering Contradiction:

Improvehandling speedVSAvoidcohesive grouping

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The conveying system is divided into multiple zones (first conveying zone, second conveying zone, third conveying zone) with different functional characteristics. Each zone handles article separation at different stages, breaking down the cohesive grouping problem into manageable segments along the conveying path

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A row separator acts as an intermediary device between the first and second conveying zones. This separator physically inserts itself between rows of articles to prevent cohesive grouping, serving as a mediator that resolves the sticking issue without stopping the high-speed conveying process

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If articles are allowed to cohesive group, then ease of operation is improved, but packing density decreases and transportation cost increases

Engineering Contradiction:

Improvearticle flowVSAvoidpacking density

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The system performs preliminary separation actions in the first conveying zone before articles are fully discharged. The row separator is positioned to prevent cohesive grouping in advance, ensuring articles are properly spaced before they reach the discharge point, thereby maximizing packing density without compromising ease of operation

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If articles are conveyed without separation, then device complexity is reduced, but conveying efficiency decreases

Engineering Contradiction:

Improveconveying system structureVSAvoidconveying efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The row separator is designed to be movable rather than fixed, allowing it to dynamically adjust its position and engagement with the articles. This dynamic capability enables effective separation without requiring a complex fixed structure, maintaining conveying efficiency while preventing cohesive grouping

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system replaces complex mechanical separation mechanisms with a simpler row separator design that uses controlled movement and positioning. This substitution reduces overall device complexity while maintaining conveying efficiency through the strategic placement and movement of the separator

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 solution effectively prevents PET articles from sticking together, improving packing density, reducing transportation costs, enhancing conveying efficiency, and optimizing filling and palletizing processes, while addressing challenges in sheet unrolling and de-nesting.

Implementation Method 1

A selectably movable barrier is positioned in close proximity to the end of the first collection area for controlling movement of the at least one row of articles

Methodology Applied

Scientific EffectMechanical force: Mechanical Force

Implementation Method 2

using pressurized gas and actuators to control movement and separation

Methodology Applied

Scientific EffectPressurized gas: Pressurisation

Data Source

PatentUS8746436B2Apparatus and method for separating articles susceptible to cohesive grouping

Publication Date: 2014.06.10 DYCO INC

AI summary

An apparatus for separating articles susceptible to cohesive grouping includes a first collection area having an end. A first conveying device collects and conveys an array of articles in a plurality of rows toward a second collection area receiving at least one row of articles from the end of the first collection area. A barrier positioned in close proximity to the end of the first collection area controls movement of the article rows between the end of the first collection area and the second collection area. A separator is positionable between the end of the first collection area and at least a portion of the second collection area. Upon the second collection area receiving the at least one row of articles from the end of the first collection area, the separator maintains a spacing between the row of articles controllably positioned along the end of the first collection area by the barrier.