Pharmaceutical Additive Manufacturing With Multi-Nozzle Flow Splitting
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Solution Overview
Problem
Existing 3D printing systems face challenges in achieving high throughput, precision, and consistency when manufacturing pharmaceutical dosage units like tablets and caplets, particularly due to high viscosity materials and the need for coordinated operation of multiple nozzles, leading to inconsistent results and high costs.
Innovation Solution
A system with a flow distribution module that divides a single flow of printing material into multiple flows, controlled by a plurality of nozzles, using closed-loop control systems to adjust temperature, pressure, and nozzle openings for precise dispensing, and multiple printing stations to ensure consistency and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple printing devices are used to increase throughput, then productivity is improved, but manufacturing precision deteriorates due to inconsistency among devices
Solution Approach 1:
The patent merges multiple printing functions into a single integrated printing device with multiple nozzles. This allows multiple materials to be printed simultaneously by one coordinated system rather than multiple independent devices, maintaining consistency while achieving high throughput. The single device architecture ensures uniform control across all printing operations.
Solution Approach 2:
The printing device is segmented into multiple nozzles that can operate independently yet coordinately. Each nozzle can handle different materials or printing tasks, allowing the system to achieve high throughput through parallel operation while maintaining precision through centralized control of each segment.
2Ease of manufacture
If traditional 3D printing systems are used with high viscosity materials, then ease of manufacture is maintained, but manufacturing precision deteriorates due to inconsistent material dispensing
Solution Approach 1:
The system dynamically adjusts printing parameters such as temperature, pressure, and nozzle opening degree based on material viscosity characteristics. By changing these parameters in real-time, the system maintains consistent material dispensing even with high viscosity materials, achieving both ease of manufacture and high precision.
Solution Approach 2:
The patent implements feedback control mechanisms that monitor material flow and dispensing consistency. When variations are detected, the system automatically adjusts printing parameters to compensate, ensuring consistent results while maintaining the simplicity of the manufacturing process.
3Productivity
If multiple nozzles are used to increase throughput, then productivity is improved, but device complexity increases due to coordination requirements
Solution Approach 1:
The control system is designed with universal coordination capabilities that can manage multiple nozzles through a unified control architecture. This multi-functional control system handles material flow regulation, temperature control, and positioning for all nozzles simultaneously, increasing throughput while managing complexity through integration rather than multiplication of control systems.
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
The system achieves high-throughput production of consistent pharmaceutical dosage units with ±2.5% inconsistency in weight and volume, reducing operational costs and meeting quality standards.
Implementation Method 1
a heating device and a temperature control device... The heating device is configured to melt the printing material
Implementation Method 2
a heating device and a temperature control device... the temperature control device is configured to maintain a temperature at the distal end of the printing nozzle within a desired range
Data Source
AI summary
The present disclosure relates generally to manufacturing pharmaceutical products using additive manufacturing technology. An exemplary printing system comprises: a material supply module for receiving a set of printing materials; a flow distribution module comprising a flow distribution plate, wherein the material supply module is configured to transport a single flow corresponding to the set of printing materials to the flow distribution plate; wherein the flow distribution plate comprises a plurality of channels for dividing the single flow into a plurality of flows; a plurality of nozzles, wherein the plurality of nozzles comprises a plurality of needle-valve mechanisms; one or more controllers for controlling the plurality of needle-valve mechanisms to dispense the plurality of flows based on a plurality of nozzle-specific parameters; and a printing platform configured to receive the dispensed plurality of flows, wherein the printing platform is configured to move to form a batch of the pharmaceutical product.