Analysis of the principle of foaming molding technology
The foaming mold equipment achieves uniform filling and rapid curing of the foaming material in the closed mold cavity by precisely controlling the chemical reaction process of the polyurethane raw materials. The temperature control system and exhaust structure design of the mold directly affect the foaming density and the qualified rate of the finished product.
Equipment classification and technical parameters
- According to the product structure: including three categories of direct cooling molds, air-cooled molds and multi-door combination molds
- According to the degree of automation: manual mold closing equipment, semi-automatic production line and fully automatic intelligent molding system
- Key performance indicators: mold life exceeds 200,000 times, and dimensional tolerance is controlled within ±0.5mm
Industry application and development trend
Currently, mainstream manufacturers have generally adopted modular mold design solutions, which can quickly adapt to refrigerator products of different volumes. With the improvement of environmental protection requirements, new low-GWP foaming agent special molds are becoming the focus of research and development. In the field of commercial cold chain, large foaming molds are developing towards multi-layer composite structures.
Key points of quality control
- Mold temperature uniformity control: the temperature difference between each area does not exceed ±2℃
- Mold release agent selection: it must be chemically compatible with the foaming material
- Regular maintenance: the guide mechanism needs to be calibrated every 5,000 molds
The continuous innovation of foaming mold equipment directly promotes the energy efficiency improvement and cost optimization of refrigerator products. In the next five years, with the penetration of intelligent manufacturing technology, intelligent molds with self-diagnosis functions will become the industry standard configuration.