Inline Load Cell Cable Tie Tensioning for Precise Force Control

Solution Overview

Problem

Existing cable tie tensioning tools lack accurate and consistent tension control, leading to inconsistent tensions, increased manual effort, and potential worker injury, discomfort, and prolonged application time.

Innovation Solution

A cable tie tensioning device equipped with a motor, lead screw drive, tie handling jaw, and inline load cell, along with a closed-loop control system, ensures precise tensioning and cutting by measuring tension in real-time and adjusting the motor accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If manual cable tie tensioning tools are used, then device complexity is reduced, but manufacturing precision and reliability of tension application deteriorate

Engineering Contradiction:

Improvedevice complexityVSAvoidtension consistency

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent replaces manual mechanical tensioning with an automated motorized system. A motor drives a lead screw mechanism to apply tension to the cable tie, eliminating the need for manual operation. This substitution of mechanical systems enables precise control over tension application through motor control, ensuring consistent and repeatable tension levels across different installations while reducing device complexity compared to complex manual tools.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent incorporates a load cell that provides real-time feedback on the tension applied to the cable tie. The load cell measures the actual tension and feeds this information back to a control system, which adjusts the motor operation to maintain the desired tension level. This closed-loop feedback mechanism ensures high manufacturing precision and reliability of tension application, preventing both over-tensioning and under-tensioning.

Inventive Principle:

Principle #23Feedback

2Ease of operation

If manual cable tie tensioning tools are used, then ease of operation is improved, but productivity and duration of action worsen

Engineering Contradiction:

Improveease of operationVSAvoidapplication time

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent implements a self-service system where the automated motorized tensioning device performs the tensioning operation independently without requiring significant user force or manual manipulation. The user simply positions the tool and activates it, and the system automatically applies the correct tension, holds it, and completes the installation. This self-service capability maintains ease of operation while dramatically improving productivity by reducing application time and eliminating the need for user strength.

Inventive Principle:

Principle #25Self-service

3Device complexity

If mechanical tensioning assembly without calibration is used, then device complexity is reduced, but reliability and measurement precision deteriorate

Engineering Contradiction:

Improvedevice complexityVSAvoidtension control accuracy

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent incorporates a load cell that provides real-time feedback on the tension applied to the cable tie. The load cell measures the actual tension and feeds this information back to a control system, which adjusts the motor operation to maintain the desired tension level. This closed-loop feedback mechanism ensures high manufacturing precision and reliability of tension application, preventing both over-tensioning and under-tensioning.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces manual mechanical tensioning with an automated motorized system. A motor drives a lead screw mechanism to apply tension to the cable tie, eliminating the need for manual operation. This substitution of mechanical systems enables precise control over tension application through motor control, ensuring consistent and repeatable tension levels across different installations while reducing device complexity compared to complex manual tools.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 device provides consistent and precise tensioning, reducing the risk of over-tightening or under-tightening, improving safety and efficiency, and ensuring tool-to-tool consistency.

Implementation Method 1

a lead screw drive, and a pulling shaft mechanically coupled at a first end to the lead screw drive

Methodology Applied

Scientific EffectLead screw mechanism: Screw

Implementation Method 2

a sensor disposed in line with the motor and the lead screw drive... measuring tension in real-time

Methodology Applied

Scientific EffectLoad cell measurement:

Data Source

PatentUS20260077894A1Cable tie tensioning device with inline load cell

Publication Date: 2026.03.19 ABB (SCHWEIZ) AG

AI summary

A cable tie tensioning device is provided. The cable tie tensioning device includes a motor mechanically coupled to a lead screw drive, and a pulling shaft mechanically coupled at a first end to the lead screw drive. The cable tie tensioning device further includes a tie handling jaw mechanically coupled to a second end of the lead screw drive. The tie handling jaw is configured to at least partially receive a cable tie for tensioning of the cable tie during operation of the motor. The cable tie tensioning device further includes a sensor disposed in line with the motor and the lead screw drive.