Brush Guide Mechanism for Automated Stacking of Folded Products

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Solution Overview

Problem

Existing devices for stacking folded products, such as package inserts for pharmaceuticals, are inefficient in terms of time, automation, and error minimization, and fail to meet increasing quality requirements.

Innovation Solution

A device with guide devices featuring brushes that deform to exert a restoring force, holding folded products upright while allowing them to be easily displaced for stacking, using adjustable and replaceable brushes to accommodate different formats and materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional stacking devices are used, then stacking can be performed, but time expenditure and effort are excessive while automation and quality are insufficient

Engineering Contradiction:
Improvestacking efficiencyVSAvoidtime expenditure for stacking
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The brushes are designed to automatically perform multiple functions: they guide the folded products into the correct position, hold them upright through elastic restoring force, and enable easy displacement when needed. The system serves itself by using the folded products' own insertion motion to deform the brushes and generate the holding force, eliminating the need for additional actuators or complex control mechanisms.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The bristle rigidity is specifically optimized to provide the right balance: soft enough to deform easily when folded products are inserted, yet rigid enough to exert sufficient restoring force for reliable holding. This parameter optimization enables the system to achieve both easy displacement and stable support without requiring complex control systems.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If rigid guide devices are used to hold folded products upright, then support is reliable, but displacement becomes difficult and may cause damage

Engineering Contradiction:
Improvesupport reliabilityVSAvoidease of displacement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The bristle rigidity is specifically optimized to provide the right balance: soft enough to deform easily when folded products are inserted, yet rigid enough to exert sufficient restoring force for reliable holding. This parameter optimization enables the system to achieve both easy displacement and stable support without requiring complex control systems.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The guide devices use flexible brush elements instead of rigid walls. The bristles act as a flexible constraint that can be easily deformed by insertion motion but automatically returns to its original position, providing both compliance for easy operation and stability for reliable support.

Inventive Principle:
Principle #30Flexible shells and thin films

3Device complexity

If fixed guide devices are used, then structure is simple, but adaptability to different formats is limited

Engineering Contradiction:
Improvedevice simplicityVSAvoidadaptability to different formats
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The guide device incorporates movable guide elements that can be adjusted in position and angle. The brushes can be displaced laterally and rotated, allowing the effective guide width and orientation to be adapted to different folded product formats while maintaining the same basic device structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustable brush mechanism allows a single guide device to handle multiple folded product formats by changing the guide geometry. The same brush elements serve both as support structures and as adjustable guide elements, providing universal functionality across different product types.

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

The solution reduces time and effort, minimizes errors, and enhances quality by enabling efficient, automated stacking of folded products while ensuring they are supported and moved without damage.

Implementation Method 1

The brushes have bristles that extend from the guides into the stacking area. If a folded product is inserted between the guide devices, this deforms the bristles, which thereby exert a restoring force on the folded product.

Methodology Applied
Scientific EffectElastic restoring force: Elasticity

Data Source

PatentEP3590851B1Method and device for stacking folded products
Publication Date: 2022.11.02 HH GMBH & CO KG
  • EP3590851B1 patent drawingFigure 1~2
  • EP3590851B1 patent drawingFigure 3~4
  • EP3590851B1 patent drawingFigure 5~6

AI summary

An inventive device for stacking folded products (6) comprises a feeding device (2) for feeding individual, successive folded products (6) into a stacking area (4) at an outlet (22) of the feeding device (2); two guide devices (14, 16) which are opposite each other, which form the stacking area (4) between them and which are configured to receive and support successively fed folded products (6) from the feeding device (2) to form a stack (7, 8) of upright folded products (6) between them; wherein each guide device (14, 16) has a brush (42) on a side of the guide device (14, 16) facing the stacking area (4).