Modular Shrinking Device Shaft Walls for Flexible Packaging

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Solution Overview

Problem

Existing shrinking devices are inflexible and require significant effort to reconfigure for different product groups, as the shaft walls are typically designed as single, welded or riveted constructions, making it difficult to adapt the spraying of packaged goods to varying sizes and shapes effectively.

Innovation Solution

The modular design of the shrinking device features shaft walls composed of multiple chamber modules with adjustable outflow surfaces and a comb-shaped support structure, allowing for flexible adjustment of the cross-sectional area and outflow pattern to optimize the spraying of packaged goods, with each module being supplied by a dedicated shrinking agent distribution device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If shaft walls are constructed as single-piece welded or riveted structures, then structural strength and stability are improved, but adaptability and ease of reconfiguration for different product groups deteriorate

Engineering Contradiction:
Improvestructural strengthVSAvoidadaptability
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The shaft wall is divided into multiple modular segments that can be independently assembled and disassembled. Each segment contains functional components such as nozzles and heating elements, allowing the shaft wall configuration to be adapted to different product groups while maintaining structural integrity through standardized connection interfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular shaft wall segments are designed with universal connection mechanisms and standardized interfaces that allow the same basic module to serve multiple functions across different product configurations. This enables a single set of modular components to handle various product sizes and types by rearranging or replacing specific segments.

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

2Ease of manufacture

If shaft walls are designed as fixed single-piece constructions, then manufacturing simplicity is improved, but ease of repair and modification deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidease of repair
Core Design Contradiction:
Ease of manufactureVSEase of repair

Solution Approach 1:

By segmenting the shaft wall into modular units with standardized connections, each module can be manufactured independently using simple processes, then assembled into the complete shaft wall. This segmentation enables individual modules to be replaced or repaired without affecting the entire structure, significantly improving ease of repair while maintaining manufacturing simplicity through standardized components.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If shaft walls are constructed as modular segments, then adaptability and ease of reconfiguration are improved, but device complexity increases

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The modular segmentation of the shaft wall allows for standardized接口 and connection mechanisms that reduce overall system complexity. Each module is a self-contained unit with integrated components, eliminating the need for complex custom fabrication when reconfiguring for different products. The standardized modular interfaces simplify assembly and disassembly procedures.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple functional components (nozzles, heating elements, structural supports) are merged into integrated modular segments. This combining of functions within each module reduces the total number of separate components and connections required, thereby reducing device complexity while maintaining adaptability through module replacement rather than individual component modification.

Inventive Principle:
Principle #5Merging (Combining)

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

This modular design enables precise control over the spraying pattern and energy distribution, ensuring consistent shrink film application across the transport route, reducing energy loss and improving the efficiency of the shrinking process by maintaining optimal shrinking agent flow and temperature.

Implementation Method 1

a blower (20) for generating hot air or another suitable shrinking agent generator (6). The shrinking agent is directed via the shrinking agent distribution device into the interior of the shaft walls

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

The shrink film is shrunk around the items in a shrink tunnel by supplying a shrinking agent, such as hot air

Methodology Applied
Scientific EffectThermal contraction: Thermal Contraction

Data Source

PatentEP2767478B2Shrinking device with walls built from a plurality of modules
Publication Date: 2020.01.08 KRONES AG
  • EP2767478B2 patent drawingFigure 1
  • EP2767478B2 patent drawingFigure 2~3
  • EP2767478B2 patent drawingFigure 4(A)~4(B)

AI summary

The shrinkage device has a transport path for the articles or article combination, on which articles covered with packaging unit are transported in a transport direction (TR). Two shaft walls are arranged on both sides along the transport path. A shrinkage aid distributing device is arranged over each shaft wall. The shaft walls are formed of two shaft chamber modules arranged in series one after another in transport direction. Two shaft chamber modules are assigned to the shrinkage aid distributing device per shaft wall.