I. Scenario of Pure Process Parameter Adjustment
Repair Time: The repair is exclusively accomplished by adjusting the needle valve timing, pressure, injection speed, and temperature control. The total time required is 20-30 minutes, and no hardware modifications are necessary.
Verification Stage: Completion of weight and appearance verification is achieved by continuously producing 20 moulds following the adjustment. Full-capacity mass production can be immediately resumed once the filling uniformity is verified to meet standards.
Scenarios that may be applicable include the repair of routine filling imbalance faults and the implementation of temporary machine adjustments for small-batch production.
II. Basic Hardware Polishing Situation
Repair Time: The runner corresponding to the cavity is only polished locally by hand, and the nozzle is cleaned of minor carbon buildup. The filling process is slow. The operation is completed on the machine with a brief period of downtime, and the total time required is between one and two hours.
Verification Stage: The hot runner temperature is recalibrated following the repair, and 30 moulds are run to ensure that the filling uniformity is fully verified. Subsequently, production can be restored to full capacity.
Scenarios That May Be Relevant: The repair of faults, including minor carbon buildup clogging in the nozzle and excessive local resistance in the runner.
III. Circumstances necessitating substantial mould modification
Repair Time: Mould disassembly, replacement of worn gates, and remachining of runners are necessary. In the facility, the typical machining cycle is between one and two (2) days. Re-testing is conducted subsequent to reassembly.
Verification Phase: Mould flow balance verification is finalised following reassembly. In order to confirm the dimensions and properties of the product, a complete run of 50 moulds is implemented. Full-capacity production is resumed once the yield rate is verified to meet standards.
Situations that may necessitate deep fault repair include severe runner imbalance and mould hardware deterioration.
The aforementioned times are derived from the operational cadence of a standard precision injection moulding production line and are fully adaptable to your current hot runner multi-cavity mould production scenario, ensuring minimal downtime.
