Setting Tool Excitation Coil Temperature Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing setting tools for driving fastening elements into substrates face inefficiencies and potential overheating issues due to the lack of effective temperature monitoring and control, leading to reduced performance and risk of component damage.
Innovation Solution
A setting tool equipped with a temperature detection system for the excitation coil, a control unit to manage the operating sequence based on detected temperature, and a cooling mechanism to prevent overheating, which includes a temperature sensor, data memory for standard cooling rates, and a program to calculate the coil's temperature, allowing for controlled charging voltage adjustments and increased cooling rates as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the excitation coil is used for rapid discharge to drive the drive-in element, then high power and driving efficiency are achieved, but the coil temperature increases leading to overheating and component damage
Solution Approach 1:
The control unit performs preliminary temperature assessment before each discharge operation by measuring the voltage across the capacitor and comparing it with reference values. This preliminary action prevents overheating by inhibiting discharge when temperature would exceed the predetermined maximum, allowing the system to maintain high power capability while avoiding thermal damage.
Solution Approach 2:
The control unit continuously monitors the capacitor voltage and uses this feedback to assess coil temperature before each discharge operation. The feedback mechanism compares measured voltage with reference values stored in memory, and automatically adjusts operation by inhibiting discharge when temperature thresholds are approached, resolving the contradiction between maintaining high power and preventing overheating.
2Productivity
If multiple driving operations are performed continuously, then productivity increases, but the excitation coil overheats reducing reliability
Solution Approach 1:
Before each driving operation, the control unit performs a preliminary temperature check using capacitor voltage measurement. This preliminary assessment enables the system to safely execute multiple operations by preventing discharge only when temperature would compromise reliability, thus maximizing productivity while maintaining component integrity.
Solution Approach 2:
The control unit uses feedback from capacitor voltage measurements to continuously monitor thermal state during multiple operations. The feedback loop compares measured values with reference data and automatically inhibits operations when temperature thresholds are approached, allowing maximum safe operating cycles while protecting against overheating damage.
3Power
If the charging voltage is increased to improve driving efficiency, then the magnetic field strength increases, but the temperature rise of the excitation coil accelerates
Solution Approach 1:
The control unit performs preliminary temperature assessment based on capacitor charging voltage before initiating discharge. When the voltage indicates high temperature risk, the control unit inhibits discharge operation, preventing excessive temperature rise while still allowing high voltage charging to build energy for effective driving when thermal conditions permit.
Solution Approach 2:
The control unit continuously monitors capacitor voltage as feedback for temperature assessment. This feedback mechanism enables the system to dynamically adjust operation by comparing measured voltage with reference values, allowing high charging voltages for strong magnetic fields when safe, and inhibiting discharge when temperature rise would be excessive.
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
This solution enhances the tool's efficiency by preventing overheating, allowing for more driving operations while maintaining component integrity, reducing ohmic resistance, and ensuring safe operation by inhibiting the driving process when the temperature exceeds a predetermined maximum.
Implementation Method 1
an excitation coil (100), which during rapid discharge of the capacitor is flowed through by current and generates a magnetic field that accelerates the drive-in element toward the fastening element
Implementation Method 2
the means for detecting a temperature of the excitation coil comprises a temperature sensor which is arranged on the excitation coil and/or a frame holding the excitation coil
Implementation Method 3
The setting tool also preferably has a means for cooling the excitation coil
Data Source
AI summary
A setting tool for driving fastening elements into a substrate is provided, the tool comprising a holder for holding a fastening element, a drive-in element, for transferring a fastening element held in the holder into the substrate along a setting axis, and a drive, for driving the drive-in element toward the fastening element along the setting axis, wherein the drive comprises an electrical capacitor, a squirrel-cage rotor arranged on the drive-in element and an excitation coil, which during rapid discharge of the capacitor is flowed through by current and generates a magnetic field that accelerates the drive-in element toward the fastening element, and wherein the setting tool has a means for detecting a temperature of the excitation coil and a control unit which is suitable for controlling an operating sequence of the setting tool in dependence on the detected temperature of the excitation coil.