Cable Tie Tensioning Tool With Load-Cell Feedback and Auto Cutting
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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 with a load cell and closed-loop control system for precise tensioning, featuring a motor-driven lead screw and inline strain gauge for real-time tension measurement, combined with a separate cutting mechanism triggered by a gear motor for accurate cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual cable tie tensioning tools are used, then device complexity is reduced, but manufacturing precision and reliability of tension application deteriorate due to lack of calibration and consistent tension control
Solution Approach 1:
The patent replaces manual mechanical tensioning with an automated motor-driven lead screw system. The motorized actuator rotates the lead screw to advance the pushing member, applying controlled tension to the cable tie. This substitution eliminates manual operation variability and enables precise, consistent tension application through electronic control and feedback mechanisms.
Solution Approach 2:
The patent implements a feedback control system using a load cell that measures the actual tension applied to the cable tie in real-time. The measured tension is compared against a target tension value, and the motor controller adjusts the motor speed and torque to maintain the desired tension level. This closed-loop feedback ensures consistent and accurate tension application across all operations.
2Reliability
If mechanical tensioning assemblies are used without regular calibration, then ease of operation is improved, but reliability of tension application deteriorates due to tool-to-tool variation
Solution Approach 1:
The patent replaces manual mechanical tensioning with an automated motor-driven lead screw system. The motorized actuator rotates the lead screw to advance the pushing member, applying controlled tension to the cable tie. This substitution eliminates manual operation variability and enables precise, consistent tension application through electronic control and feedback mechanisms.
Solution Approach 2:
The patent implements self-calibration capabilities where the system automatically references a stored target tension value and uses the load cell feedback to self-adjust and maintain accurate tension levels. This eliminates the need for manual calibration by operators, ensuring consistent reliability across different tools and operators while maintaining ease of operation.
3Productivity
If manual cable tie tensioning is performed, then device complexity is reduced, but productivity deteriorates due to significant user force requirements and prolonged application time
Solution Approach 1:
The patent replaces manual mechanical tensioning with an automated motor-driven lead screw system. The motorized actuator rotates the lead screw to advance the pushing member, applying controlled tension to the cable tie. This substitution eliminates manual operation variability and enables precise, consistent tension application through electronic control and feedback mechanisms.
Solution Approach 2:
The patent employs a cyclic operation mode where the motor-driven system automatically performs tensioning, holds the tension, and then releases in periodic cycles. This automated periodic action eliminates the need for continuous manual force application, significantly reducing operator fatigue and enabling faster, more consistent operation cycles that improve overall productivity.
4Manufacturing precision
If manual cutting is performed after tensioning, then device complexity is reduced, but manufacturing precision deteriorates due to inconsistent cutting accuracy
Solution Approach 1:
The patent merges the tensioning and cutting functions into a single integrated tool. The motor-driven system that performs tensioning is combined with a cutting mechanism that operates automatically after tensioning is complete. This integration ensures that the same controlled system performs both functions, maintaining precision and consistency while eliminating the need for separate manual cutting operations.
Solution Approach 2:
The patent implements preliminary positioning and preparation before the cutting action. The system first applies the target tension to the cable tie and holds it steady, then automatically activates the cutting mechanism at the precise moment when the tension is established. This preliminary action sequence ensures accurate cutting at the correct location while maintaining tension integrity.
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
Ensures consistent and precise tension application, reducing the risk of over-tightening or under-tightening, improving safety, and enhancing efficiency by providing real-time feedback and automatic cutting.
Implementation Method 1
A cable tie tensioning device with a load cell and closed-loop control system for precise tensioning, featuring a motor-driven lead screw
Implementation Method 2
inline strain gauge for real-time tension measurement
Data Source
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AI summary
A cable tie tensioning device is provided. The cable tie tensioning device includes a tensioning assembly configured to at least partially receive a cable tie and apply tension to the cable tie. The cable tie tensioning device further includes an actuator in communication with the tensioning assembly for operating the tensioning assembly. The cable tie tensioning device further includes a user interface in communication with the tensioning assembly. The user interface includes an input means for input of a target tension to be applied by the tensioning assembly to the cable tie, and an output means for display of an actual tension being applied by the tensioning assembly to the cable tie during operation of the tensioning assembly.