Packaging Unit Functional Section Buffering

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Solution Overview

Problem

Existing packaging systems require significant space for buffering article groups or sales units, and there is a need for a more compact and efficient method to handle packaging units without compromising functionality.

Innovation Solution

A device and method that utilize a control device to manage handling modules, including a packaging module, grouping module, and functional sections to arrange and align packaging units, eliminating the need for a traditional buffer section by using functional sections to accumulate and align units in a space-efficient manner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional buffer section is used to accommodate packaging units when the shrink tunnel is shut down, then the packaging units can be stored safely, but the space required increases significantly

Engineering Contradiction:
Improvepackaging unit storage safetyVSAvoidbuffer section area
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The functional section is designed to perform multiple functions: during normal operation it serves as a transport module moving packaging units from the grouping module to the pre-grouping module, and during shutdown it serves as a buffer section by accumulating packaging units. This multi-functionality eliminates the need for a separate dedicated buffer section, thereby reducing the overall space requirement while maintaining the ability to store packaging units safely during shutdown

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

Solution Approach 2:

The functional section's operation mode is dynamically changed based on system requirements. During normal operation, packaging units are continuously transported through the functional section. When shutdown occurs, the functional section is converted to accumulation mode where packaging units are temporarily stored. This dynamic adaptability allows the same structural element to serve different purposes, reducing the need for additional dedicated buffer space

Inventive Principle:
Principle #15Dynamics

2Reliability

If the functional section is used as a buffer section during shutdown, then the packaging module can be emptied, but the functional section must be converted from transport mode to accumulation mode

Engineering Contradiction:
Improvepackaging module emptyingVSAvoidoperating mode switching
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The functional section transitions between operating modes by changing operational parameters rather than physical configuration. During transport mode, packaging units move continuously through the section. During accumulation mode, the section retains packaging units to form a buffer. This parameter-based switching (from continuous movement to stationary storage) allows the system to adapt its function without complex mechanical reconfiguration, maintaining simplicity while enabling mode conversion

Inventive Principle:
Principle #35Parameter changes

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 allows for minimal space usage while ensuring efficient handling and layering of packaging units, accommodating malfunctions by temporarily storing units in functional sections, thus reducing the overall buffer area required.

Implementation Method 1

The shrink film is shrunk around the items by applying hot air in a shrink tunnel

Methodology Applied
Scientific EffectThermal contraction: Thermal Contraction

Data Source

PatentEP4556414A1Device and method for packaging and layering packaging units
Publication Date: 2025.05.21 KRONES AG
  • EP4556414A1 patent drawingFigure 1
  • EP4556414A1 patent drawingFigure 2~3
  • EP4556414A1 patent drawingFigure 4~5

AI summary

The invention relates to a device (1) and a method for packaging and layering packaging units (20). The device (1) comprises a control device (6), a packaging module (4), a grouping module (7) for bringing a plurality of packaging units (20) into a relative arrangement and/or alignment relative to one another coordinated with a palletizable layer (21) to be formed, and a first pre-grouping module (9). Between the grouping module (7) and the first pre-grouping module (9), at least one functional section (15) is formed, which is controlled by the control device (6), wherein the control device can set a first operating mode (51) and a second operating mode (52) of the functional section. In the first operating mode (51), the at least one functional section (15) is designed to continuously feed the arrangement of packaging units (20) prepared for layer formation to the first pre-grouping module (9).In contrast, in the second operating mode (52), the at least one functional section (15) is designed to push together at least part of a relative arrangement and/or alignment of packaging units (20) prepared for layer formation within the functional section in the transport direction (50).