Bottom-Opening Transport Bag Assembly for Automatic Conveyor Unloading

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Solution Overview

Problem

Conveyor systems lack an efficient method for automatically unloading and re-loading transport bags, which hinders the seamless transportation and handling of goods.

Innovation Solution

A transport bag design featuring a dimensionally stable carrying wall with a clutch mechanism in the lower area and a flexible bottom side wall, equipped with counter-coupling means for automatic opening and closing, integrated into a conveyor system with specialized stations for loading, unloading, and re-closing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rigid floor is hinged and closed with a lever system, then the transport bag can be sealed, but the unloading process becomes complex and requires manual intervention

Engineering Contradiction:
Improvesealing capabilityVSAvoidunloading mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The transport bag automatically opens at the bottom by utilizing the weight of its own flexible bottom wall when the clutch is released, eliminating the need for manual intervention or complex unloading mechanisms. The system serves itself by using gravity and the flexible material's natural movement to achieve opening.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Instead of opening the transport bag from the top (conventional approach), the invention opens from the bottom by releasing the clutch mechanism. This inverted approach simplifies the unloading process while maintaining sealing capability when closed.

Inventive Principle:
Principle #13The other way round (Inversion)

2Ease of operation

If the bottom wall is made flexible for automatic opening, then unloading is simplified, but the structural stability of the transport bag is compromised

Engineering Contradiction:
Improveautomatic openingVSAvoidstructural stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The transport bag is divided into two distinct parts: a stable carrying wall (upper part) and a flexible bottom wall (lower part). This segmentation allows each part to have different properties - the upper part provides structural stability while the lower part enables automatic opening through flexibility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different parts of the transport bag have different mechanical properties: the carrying wall is rigid and stable, while only the bottom wall is flexible. This local differentiation of material properties allows the bag to maintain overall structural stability while achieving automatic opening where needed.

Inventive Principle:
Principle #3Local quality

3Productivity

If the clutch mechanism is added for automatic opening, then unloading efficiency improves, but the device complexity increases

Engineering Contradiction:
Improveunloading efficiencyVSAvoidclutch mechanism
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The clutch mechanism is designed to be released automatically or through simple actuation, allowing the flexible bottom wall to open by its own weight. This self-service approach improves unloading efficiency without requiring complex actuation systems or multiple components.

Inventive Principle:
Principle #25Self-service

4Adaptability or versatility

If the transport bag is designed with a frame-like bracket for conveyor integration, then conveyor compatibility is improved, but the device complexity increases

Engineering Contradiction:
Improveconveyor compatibilityVSAvoidbracket structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The frame-like bracket is designed with universal features that allow the transport bag to be integrated into various conveyor systems. The bracket serves multiple functions: providing structural support, enabling conveyor attachment, and facilitating automatic opening through interaction with conveyor mechanisms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enables automatic unloading and re-loading of transport bags, ensuring efficient and precise handling of goods within the conveyor system by utilizing the clutch mechanism and station-specific alignment and lifting mechanisms.

Implementation Method 1

The bottom side wall is flexible, at least in its lower area, and has counter-coupling means that can be engaged with the coupling, so that the transport bag can be closed at the bottom. When the clutch is opened, the transport bag opens downward and releases a transported good.

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP2130968B1Transport bag and transport assembly for a transport bag
Publication Date: 2010.09.15 DURKOPP FORDERTECHN
  • EP2130968B1 patent drawingFigure 1
  • EP2130968B1 patent drawingFigure 2
  • EP2130968B1 patent drawingFigure 3

AI summary

The transport bag (1) has two walls. The former wall is formed as a support wall (2) with a support hook (12) on its upper area and a pivoting clamp (8). The former wall has a coupling (14) on its lower area, devices for opening the coupling on its upper area, and devices for closing the coupling. The latter wall is formed as a flexible base-side-wall (3) in the lower area. The latter wall is connected with the pivoting clamp in its upper area and is provided with counter coupling units in its lower area for inclusion in the coupling. An independent claim is included for a conveying system with a conveying rail.