1. Furniture mould filling stage:
Furniture Mould(FURNITUREMOULD) filling is the first step in the process of producing plastic parts for all plastic injection moulds. The injection moulding time starts from the time the furniture mould is closed and starts injection moulding until the cavity is filled to about 95%. Under the condition of normal production of furniture mould, the shorter the plastic filling time, the higher the moulding efficiency of the product.
2. Pressure maintaining stage
The pressure maintaining stage of furniture mould is also the stage of continuous pressure application. Under the condition of the increasing pressure of the injection moulding machine, the density of plastic gradually increases. During the pressure maintaining process of the furniture mould, the mould cavity of the furniture mould is slowly filled with plastic, resulting in the backpressure of the furniture mould gradually increasing. During the pressure maintaining process, the screw of the injection moulding machine moves forward slowly, and the speed of plastic is relatively slow. The flow, in this case, is called pressure maintaining flow. During the pressure maintaining stage of furniture mould, the plastic is cooled, resulting in accelerated curing, increased melt viscosity and great resistance in the mould cavity. In the later stage of pressure maintaining, the density of materials continues to increase, and the plastic parts are also injection moulded. The pressure maintaining stage is not completed until the gate is solidified. At this time, the cavity pressure reaches a high value.
3. Cooling stage
The design and arrangement of the cooling system are also very important in the moulding of furniture mould. Because only when the temperature of the furniture mould is cooled to a certain rigidity can the plastic products be released from the mould to reduce the deformation caused by external force and ensure the appearance of the products.
4. Demoulding stage
Demoulding stage is the latter part of furniture mould forming. Demoulding has a very important impact on products. Improper demoulding may lead to uneven surface stress during demolding and deformation of products during ejection. There are two common demoulding methods: stripper plate de-moulding and ejector rod demoulding. When designing furniture moulds, we should choose the appropriate demoulding method according to the structural characteristics of the products to ensure product quality.
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