Compact Strapping Head Multi-Function Roller Design

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Solution Overview

Problem

Conventional strapping apparatuses are bulky and heavy due to the requirement of multiple rollers for band advancement, retraction, and tensioning, leading to a complex and large strapping head design.

Innovation Solution

A strapping device with at most three rollers that perform multiple functions, where one roller is movable and can pivot or translate to reduce the number of components, allowing for a more compact design and simplified band handling, including tension relief mechanisms to ease band connection and cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple rollers are used for band advancement, retraction, and tensioning, then the strapping apparatus achieves reliable band handling, but the strapping head becomes bulky and heavy

Engineering Contradiction:

Improveband handling reliabilityVSAvoidstrapping head weight

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent applies multi-functionality by designing a single roller that performs multiple functions: it serves as both the tensioning roller and the advancement/retraction roller. This eliminates the need for separate rollers for each function, thereby reducing the overall weight and complexity of the strapping head while maintaining reliable band handling through the integrated design

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges previously separate components (tensioning roller and advancement/retraction roller) into a single integrated roller. This consolidation reduces the number of parts, decreases weight, and simplifies the strapping head structure while preserving the functional reliability of band advancement, retraction, and tensioning operations

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If multiple rollers are used for band advancement, retraction, and tensioning, then the strapping apparatus achieves reliable band handling, but the strapping head design becomes complex

Engineering Contradiction:

Improveband handling reliabilityVSAvoidstrapping head complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The integrated roller serves multiple functions simultaneously (tensioning, advancement, and retraction), eliminating the need for multiple separate rollers and their associated mounting structures. This reduces device complexity while maintaining reliable band handling through the multi-functional design

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

By combining previously separate tensioning and advancement/retraction rollers into a single component, the patent reduces the number of parts and simplifies the overall strapping head design, making it less complex while preserving functional reliability

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If multiple rollers are used for band advancement, retraction, and tensioning, then the strapping apparatus achieves reliable band handling, but the strapping head occupies large volume

Engineering Contradiction:

Improveband handling reliabilityVSAvoidstrapping head volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The single multi-functional roller eliminates the need for multiple separate rollers, thereby reducing the space required for mounting and positioning multiple components. This decreases the overall volume of the strapping head while maintaining reliable band handling through the integrated roller design

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

By merging multiple rollers into a single component, the patent reduces the spatial requirements of the strapping head, making it more compact and occupying less volume while preserving the functional capabilities of band advancement, retraction, and tensioning

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

The compact design enhances functional reliability, reduces slippage, and facilitates easier band processing by minimizing the number of rollers, resulting in a more efficient and space-saving strapping apparatus.

Implementation Method 1

one roller is movable and can pivot or translate to reduce the number of components

Methodology Applied

Scientific EffectMechanical movement:

Implementation Method 2

including tension relief mechanisms to ease band connection and cutting

Methodology Applied

Scientific EffectTension relief:

Data Source

PatentUS11312519B2Strapping apparatus

Publication Date: 2022.04.26 SIGNODE IND GROUP LLC

AI summary

The present disclosure relates to a strapping head of a strapping device for strapping packaged goods with a strap. The strapping head includes an advancing apparatus and tensioning apparatus having at most three rollers for transferring an advancing motion, a retracting motion, and a tensioning motion to the strap. A least one of the wheels is operatively connected to a driving apparatus to cause the at least one of the wheels to rotate about a rotational axis for the advancing, retracting, and tensioning motions. The rollers can be brought in contact with the strap in pairs on both sides of the strap in different combinations with each other.