Strapping Tool Object-Blocking Assembly for Joint Integrity

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Solution Overview

Problem

Existing strapping tools face issues with foreign objects inadvertently entering the space between jaws, leading to suboptimal joint strength, potential damage to components, and increased downtime due to interference during the sealing process.

Innovation Solution

The strapping tool employs an object-blocking assembly that prevents foreign objects from entering the seal-element-receiving space by ejecting them, ensuring the jaws can securely notch and attach overlapping strap portions without interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the seal-element-receiving space is left open for strap insertion, then ease of operation is improved, but foreign objects can inadvertently enter causing harmful effects

Engineering Contradiction:

Improvestrap insertionVSAvoidforeign object interference

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The object-blocking assembly is positioned in advance within the seal-element-receiving space to prevent foreign objects from entering during the strap insertion process, allowing the space to remain open for easy operation while protecting against contamination

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The object-blocking assembly acts as an intermediary component between the open seal-element-receiving space and the internal sealing mechanism, selectively allowing strap passage while blocking foreign objects from interfering with the sealing process

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If foreign objects are present during sealing, then device complexity increases due to potential damage, but productivity is reduced due to increased downtime

Engineering Contradiction:

Improvejoint integrityVSAvoiddowntime

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The object-blocking assembly applies preliminary protective action by preventing foreign objects from entering the seal-element-receiving space before they can cause damage to components or interfere with the sealing process, thereby maintaining joint integrity and avoiding downtime

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The object-blocking assembly provides beforehand protection by being positioned in advance to cushion against potential foreign object interference, preventing damage to the sealing mechanism and ensuring continuous productive operation

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentEP3981697B1Strapping tool

Publication Date: 2025.08.27 SIGNODE IND GROUP LLC

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AI summary

Various embodiments of the present disclosure provide a strapping tool configured to tension metal strap around a load and, after tensioning, attach overlapping portions of the strap to one another by cutting notches into a seal element positioned around the overlapping portions of the strap and into the overlapping portions of the strap themselves.