I. Tools for Mould Flow Simulation and Analysis
Moldflow: A professional injection moulding simulation software that is widely used and accurately simulates the flow behaviour of melt in hot runners and multi-cavity moulds. It automatically optimises runner dimensions, achieves synchronous filling of each cavity, and anticipates potential issues such as material stagnation, degradation, and uneven cooling.
OpenFOAM is a fluid simulation tool that is open-source and capable of customisation of the flow field simulation logic and hot runner temperature. It is well-suited for independent secondary development by technical teams and is designed to meet the low-cost digital simulation requirements.
II. Instruments for Precision Measurement and Calibration
Roughness Tester: Determines the roughness of the interior wall of the runner to guarantee that the runner surface satisfies the Ra<0.2μm mirror-grade requirement, thereby preventing melt stagnation and decomposition.
Fluke Temperature Monitoring System: Utilises standard thermocouples to perform online temperature calibration of numerous zones in the hot runner, guaranteeing a consistent temperature control accuracy of ±0.5℃.
Standard Pressure Gauge: Intended for high-pressure injection scenarios, this instrument is utilised to evaluate the pressure resistance of hot runner systems, ensuring that the system's pressure resistance exceeds 200 MPa.
III. Tools for Machining and Assembly
High-Precision Coordinate Boring Machine: Utilised to achieve flow channel balance by precision machining the flow channel openings in the hot runner manifold, ensuring that the length difference of each branch is ≤5mm and the diameter error is ≤0.1mm.
The Floating Positioning Ring Fixture is employed in the thermal expansion compensation assembly of hot runner plates. It is designed to prevent mould deformation and valve pin jamming caused by thermal expansion by reserving an axial floating space of ≥0.5mm.
Coaxiality Detector: Detects the coaxiality between the heated runner and the positioning ring, ensuring that the coaxiality is ≤0.02mm and that uneven filling is not caused by assembly eccentricity.
IV. Instruments for Digital Monitoring and Maintenance
In-Mold Pressure Sensor: A device that is installed at the gate of each cavity to gather the pressure-time curve of each cavity in real time to monitor the consistency of the filling. A curve overlap of ≥95% is considered acceptable.
IoT Intelligent Temperature Control System: Supports real-time temperature and pressure monitoring and anomaly alarms, with a data upload speed of ≤1 second and an alarm response of ≤3 seconds. Reduce inspection expenses by remotely monitoring the heated runner's operational status.
The MES System integrates hot runner operating data, monitors the production cycle, defect rate, and energy consumption data of each machine in real time, and identifies bottleneck processes through OEE analysis for targeted optimisation.
V. Supplementary Debugging Instruments
SMED Quick Mould Change Tooling: Facilitates the preheating of moulds and the preparation of tools off-machine, thereby reducing the mould changeover time to within 15 minutes and enhancing the uptime of equipment.
The TPM Preventive Maintenance Toolkit comprises frequently employed spare parts, including valve needles, thermocouples, and heating coils. Conducts routine inspections of insulation resistance exceeding 5MΩ to guarantee that the lifespan of the heating element exceeds 1 million cycles.
The precision hot runner multi-cavity mould injection moulding production line is optimally served by this toolkit, which encompasses the entire process optimisation requirements from design to mass production. This substantially enhances the efficiency and effectiveness of optimisation and implementation.
