Material Supply Pressure Sensing for Backlash Measurement
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Solution Overview
Problem
Existing three dimensional molding devices suffer from backlash in the mechanical parts of the flow rate adjusting mechanism, making it difficult to measure without disassembly.
Innovation Solution
A material supplying device with a plasticizing section, nozzle, supply control mechanism, pressure sensor, and control section that calculates backlash based on pressure sensor data to adjust the supply amount of plasticization material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flow rate adjusting mechanism is used to control the supply amount of plasticization material, then the supply amount can be adjusted, but backlash exists in the mechanical parts making measurement difficult
Solution Approach 1:
The patent replaces direct mechanical measurement of backlash with a pressure-based detection system. A pressure sensor measures pressure changes in the flow path, and the control section calculates backlash values based on these pressure detection data, eliminating the need for physical disassembly and mechanical measurement tools.
Solution Approach 2:
The patent introduces pressure as an intermediary parameter to indirectly measure backlash. Instead of directly measuring mechanical clearance, the system uses pressure sensor data as a mediator to infer backlash values, allowing non-contact measurement through the flow path pressure changes.
2Measurement precision
If the device is disassembled to measure backlash, then accurate measurement is possible, but maintenance time increases
Solution Approach 1:
The system performs self-diagnosis by automatically measuring backlash using integrated pressure sensors and control algorithms. The device can detect and measure its own mechanical clearance without external intervention or disassembly, enabling maintenance personnel to schedule service based on actual condition data rather than performing time-consuming manual measurements.
3Ease of operation
If pressure sensor data is used to calculate backlash, then measurement without disassembly is enabled, but device complexity increases
Solution Approach 1:
The pressure sensor serves multiple functions: it monitors flow path pressure for process control and simultaneously provides data for backlash measurement. The control section performs dual purposes by using the same pressure data both for normal operation monitoring and for calculating mechanical clearance values, eliminating the need for separate dedicated measurement hardware.
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
Enables accurate measurement and correction of backlash without disassembly, improving molding accuracy and facilitating easy maintenance planning.
Implementation Method 1
a pressure sensor configured to measure the pressure of the plasticization material in the flow path
Data Source
AI summary
A material supplying device includes a plasticizing section configured to plasticize a material to generate a plasticization material; a nozzle configured to supply the plasticization material to the outside; a supply control mechanism that is provided in a flow path communicating with the plasticizing section and the nozzle, and that is configured to adjust a supply amount of the plasticization material from the nozzle to the outside; a pressure sensor configured to measure the pressure of the plasticization material in the flow path; and a control section configured to control an operation of the supply control mechanism, wherein the control section is configured to calculate a backlash value indicating backlash of the supply control mechanism based on detection data including a detection value output from the pressure sensor, and the detection data is data including in time series the detection values output from the pressure sensor.