Plasticizing Flow Path Sensing for Precise Injection Control
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Solution Overview
Problem
Existing three-dimensional shaping devices fail to accurately identify the state of the material in the flow path due to pressure measurement at a single point, leading to inefficiencies in material processing.
Innovation Solution
A plasticizing device equipped with a flat screw, barrel, heating unit, aspiration delivery unit, and multiple measurement units to measure pressures and temperatures at various locations, allowing for detailed identification of the material state and precise control of the injection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure is measured at one point in the flow path, then the device structure is simple, but the material state in the flow path cannot be identified in detail
Solution Approach 1:
The patent divides the flow path into multiple measurement locations (at least three points) and places measurement units at each location. This segmentation allows detailed identification of material state at different positions in the flow path, transforming a single-point measurement into a distributed measurement system that captures spatial variations in pressure and temperature.
Solution Approach 2:
The patent transitions from one-dimensional single-point measurement to multi-dimensional spatial measurement by distributing measurement units across multiple locations in the flow path. This dimensional expansion enables comprehensive mapping of material state throughout the flow path, providing detailed identification capability.
2Measurement precision
If multiple measurement units are added to measure pressures and temperatures at various locations, then material state identification improves, but device complexity increases
Solution Approach 1:
The patent segments the measurement function by placing multiple independent measurement units at different locations in the flow path. Each measurement unit independently measures pressure and/or temperature at its specific location, allowing detailed material state identification without requiring a completely new measurement system.
Solution Approach 2:
The measurement units are designed with multi-functionality, capable of measuring both pressure and temperature at each location. This universal measurement capability reduces the need for separate specialized sensors and integrates multiple measurement functions into a cohesive system.
3Manufacturing precision
If detailed measurements at multiple locations are implemented, then control precision improves, but the number of components increases
Solution Approach 1:
The control system is segmented to receive and process measurements from multiple independent measurement units. Each measurement location feeds data to the control unit, which independently analyzes the material state at each position and adjusts injection parameters accordingly, enabling precise control through distributed feedback.
Solution Approach 2:
The patent implements a feedback mechanism where the control unit continuously receives measurement data from multiple locations, identifies the material state based on this data, and adjusts injection parameters in response. This closed-loop feedback system enables precise control by using real-time measurements from throughout the flow path.
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 temperature and pressure control of the plasticized material, improving the quality and efficiency of the injection molding process by adjusting parameters based on detailed measurements.
Implementation Method 1
a heating unit configured to heat the material supplied to the groove
Implementation Method 2
a plurality of measurement units configured to measure pressures or temperatures at a plurality of locations in the flow path
Implementation Method 3
a plurality of measurement units configured to measure pressures or temperatures at a plurality of locations in the flow path
Implementation Method 4
a plunger configured to move in the cylinder so as to aspirate the plasticized material into the branch flow path or deliver the aspirated plasticized material to the nozzle
Data Source
AI summary
A plasticizing device includes a flat screw including a groove forming surface in which a groove is formed, a barrel having a facing surface and a communication hole formed in the facing surface, the communication hole allowing a plasticized material to flow out, a heating unit, a flow path through which the plasticized material flows, a nozzle communicating with the flow path, a plurality of measurement units configured to measure pressures or temperatures in the flow path, an aspiration delivery unit, including a cylinder, having a branch flow path and a plunger configured to move in the cylinder so as to aspirate the plasticized material into the branch flow path or deliver the aspirated plasticized material to the nozzle, and a control unit configured to identify a state of the plasticized material in the flow path based on measurement values of the measurement units.