Spreading Device for Offset Partial Web Feeding

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Solution Overview

Problem

Existing slicing devices require multiple separate intermediate sheet feeds for parallel multi-lane slicing, which is material-intensive and inflexible, as each interleaving sheet feed must be provided multiple times, leading to increased complexity and cost.

Innovation Solution

A spreading device that divides an incoming material web into offset partial webs, allowing for independent feeding and adjustable offset, enabling flexible and efficient use of intermediate sheets across multiple tracks without the need for multiple separate feeds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate intermediate sheet feeds are used for parallel multi-lane slicing, then each track can be supplied with intermediate sheets independently, but the device complexity and material consumption increase significantly

Engineering Contradiction:
ImproveIndependent sheet feeding capability per trackVSAvoidNumber of intermediate sheet feed components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The single material web is divided into multiple partial webs using cutting devices, with each partial web being assigned to a specific track. This segmentation allows independent feeding of each track while using a single source material web, thereby reducing the number of required feed components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple intermediate sheet feed functions are merged into a single spreading device that handles one material web and distributes it to multiple tracks. This consolidation reduces device complexity while maintaining the capability to supply each track independently.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If multiple separate intermediate sheet feeds are provided for each track, then sheet supply is reliable for each lane, but material waste increases due to separate processing

Engineering Contradiction:
ImproveIntermediate sheet supply reliabilityVSAvoidMaterial web consumption
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

Multiple intermediate sheets that would otherwise be processed separately through individual feed systems are merged into a single continuous material web. This web is then divided into partial webs, reducing overall material consumption while ensuring reliable supply to each track through coordinated feeding mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If a single material web is divided into multiple partial webs, then device complexity is reduced, but the ability to feed different speeds and pause times to individual tracks is limited

Engineering Contradiction:
ImproveNumber of feed componentsVSAvoidIndependent speed and pause control per track
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The spreading device incorporates dynamic adjustment capabilities that allow each partial web to be fed at different speeds and with different pause times according to the specific requirements of each track. This dynamic control is achieved through adjustable feeding mechanisms that can independently regulate the motion of each partial web despite their common origin.

Inventive Principle:
Principle #15Dynamics

4Device complexity

If the offset between partial webs is fixed, then the spreading device structure is simplified, but the flexibility to adapt to different track spacing requirements is reduced

Engineering Contradiction:
ImproveSpreading device structureVSAvoidOffset adjustment capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The spreading device incorporates adjustable mechanisms that enable dynamic modification of the offset between partial webs. This allows the device to adapt to different track spacing requirements while maintaining a relatively simple base structure that can be configured for various applications.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2671829B1Expander device
Publication Date: 2017.07.12 WEBER FOOD TECHNOLOGY SE & CO KG
  • EP2671829B1 patent drawingFigure 1
  • EP2671829B1 patent drawingFigure 2
  • EP2671829B1 patent drawingFigure 3

AI summary

The spreading device (30) has a cutting unit which divides the incoming material web (26) into partial web portions (32). The deflection units deflect the partial web portions into opposite directions. The displacement of partial web portions is adjusted by changing the angle between the axis of deflection unit and course direction of web material. Independent claims are included for the following: (1) sheet feeder; (2) food product cutting device such as high performance slicer; and (3) food product conveying device such as sorting and/or conveyor device.