Cartridge Mixer Feedback Control for Homogeneous Material Mixing
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Solution Overview
Problem
Current cartridge-style mixers fail to ensure homogeneous mixing of materials, leading to performance failures and delayed validation, and lack the ability to measure process performance or determine maintenance needs.
Innovation Solution
An automated mixing system with sensors to measure rotational speed and stroke speed, an automated timer, and a controller for instant feedback, providing a visual display and light indicator to ensure homogeneous mixing and record mixing parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If current cartridge-style mixers are used to mix cartridge contents, then the mixing process can be performed, but non-homogenous mixing occurs leading to material performance failures
Solution Approach 1:
The system incorporates sensors that continuously monitor mixing parameters (rotational speed, stroke speed, mixing time) and provide feedback to the controller. The controller adjusts mixing operations in real-time based on this feedback to ensure homogeneous mixing is achieved, preventing material performance failures.
Solution Approach 2:
The patent replaces manual or simple mechanical mixing with an automated control system that uses sensors, controllers, and automated actuators. This substitution enables precise control of mixing parameters to achieve homogeneous mixing that cannot be reliably obtained with conventional mechanical mixers.
2Loss of information
If current cartridge-style mixers are used, then mixing can be performed, but the ability to measure process performance and determine maintenance needs is lacking
Solution Approach 1:
Sensors continuously monitor mixing parameters and provide feedback to the controller, creating a closed-loop system that tracks process performance in real-time. This enables measurement and analysis of mixing effectiveness without significantly increasing overall system complexity.
Solution Approach 2:
The system automatically measures and records its own performance parameters through integrated sensors and controllers, eliminating the need for external measurement devices or manual monitoring. The system self-diagnoses and provides maintenance information based on accumulated operational data.
3Device complexity
If mixing is performed without automated control and feedback, then the device complexity is lower, but the risk of non-homogenous mixing and material waste increases
Solution Approach 1:
Real-time feedback from sensors allows the control system to adjust mixing parameters dynamically to ensure homogeneous mixing is achieved, preventing material waste from failed mixing operations while maintaining reasonable system complexity.
Solution Approach 2:
The system automatically adjusts mixing parameters (rotational speed, stroke speed, mixing time) based on sensor feedback and process requirements. This dynamic parameter optimization ensures consistent homogeneous mixing results, reducing material waste without requiring excessive complexity in the control system.
Data Source
AI summary
Current cartridge-style mixers due not have the ability to measure mixing performance nor determine the need for maintenance based on performance. Risks of non-homogeneous mixing and insufficient maintenance can exist with cartridge-style mixers. A mixing system comprises a mixing apparatus, a first switch, a magnetic switch, and a controller. The mixing apparatus is configured to receive a cartridge and to mix a material. The mixing apparatus comprises a linear actuator configured to translate the cartridge or plunger in a vertical direction and a spindle configured to rotate a plunger. The first switch is configured to measure a number of strokes per unit of time of operating the linear actuator. The magnetic switch is configured to measure a speed of the spindle. The controller is configured to receive one or more mixing parameters, actuate the spindle and the linear actuator, and actuate a light to indicate if there was sufficient mixing.