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Injection molding processing technological process is?
by：CSSSLD
2021-02-03
Injection molding process refers to the molten material through, such as operation, injection pressure, cooling, from production must be in the shape of the processes of semi-finished parts.
plastic parts mainly include injection molding process and mold - — — Fill - — ( Auxiliary gas, water) The holding - — Cooling - — Open mold - — Stripping and so on six stages.
1. Clamping, namely closed die
2. Fill in
fill is the first step in the process of the injection molding cycle, time starts from mold closing injection, into the mold cavity filling to about 95%. Fill the shorter the time, the higher the forming efficiency; But in actual production, cycle time, Or injection speed) To be restricted by many conditions.
3. 。 Pressure maintaining
the role of the holding stage is a continuous pressure, compaction melt, increase the density of the plastic ( Increases the secret) , to compensate for the shrinkage of the plastic behavior. In high pressure region, plastic is relatively compact, high density; In low pressure area, plastic is relatively loose, density is low, so in the process of the holding pressure as the main factors affecting the holding process.
4. Cooling
only cooling solidification molding plastic products to a certain rigidity, stripping to avoid plastic deformation caused by external forces. Due to the cooling time of the molding cycle is about 70% ~ 80%, thus well designed cooling system can greatly shorten the molding time, improve the injection molding productivity, reduce the cost.
5. Open mode, turn the mold
6. Demoulding
demoulding way is undeserved, may cause the product uneven when parting, ejection causes deformation defects such as products, design the mould according to the structure characteristics of the product to choose the right means of stripping, to ensure product quality.
plastic parts mainly include injection molding process and mold - — — Fill - — ( Auxiliary gas, water) The holding - — Cooling - — Open mold - — Stripping and so on six stages.
1. Clamping, namely closed die
2. Fill in
fill is the first step in the process of the injection molding cycle, time starts from mold closing injection, into the mold cavity filling to about 95%. Fill the shorter the time, the higher the forming efficiency; But in actual production, cycle time, Or injection speed) To be restricted by many conditions.
3. 。 Pressure maintaining
the role of the holding stage is a continuous pressure, compaction melt, increase the density of the plastic ( Increases the secret) , to compensate for the shrinkage of the plastic behavior. In high pressure region, plastic is relatively compact, high density; In low pressure area, plastic is relatively loose, density is low, so in the process of the holding pressure as the main factors affecting the holding process.
4. Cooling
only cooling solidification molding plastic products to a certain rigidity, stripping to avoid plastic deformation caused by external forces. Due to the cooling time of the molding cycle is about 70% ~ 80%, thus well designed cooling system can greatly shorten the molding time, improve the injection molding productivity, reduce the cost.
5. Open mode, turn the mold
6. Demoulding
demoulding way is undeserved, may cause the product uneven when parting, ejection causes deformation defects such as products, design the mould according to the structure characteristics of the product to choose the right means of stripping, to ensure product quality.
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