Injection molding machine manufacturers | How to adjust the mold of the vertical injection molding machine?

Feb 26, 2022

Injection molding machine manufacturers

First, the composition of the injection molding machine
Injection molding machine is usually composed of injection system, mold clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc.
2. Mold adjustment steps of injection molding machine
1. Temperature control
1) Barrel temperature: set different barrel temperatures according to the parameters on different types of injection machines
2) Nozzle temperature: In order to prevent the "drooling phenomenon" that may occur in the straight-through nozzle, the set nozzle temperature is usually slightly lower than the maximum temperature of the barrel, but it should not be too low, otherwise it will lead to premature condensation. Blocking or producing early setting material affects the performance of the product.
3) Mold temperature: Set the mold temperature. The temperature of the mold depends on the presence or absence of plastic crystallinity, the size and structure of the product, performance requirements, and other process conditions.
2. Pressure control
Pressure control There are two types of plasticizing pressure control and injection pressure control.
1) Plasticizing pressure (back pressure): It can be adjusted by the relief valve in the hydraulic system. In general operation, the decision of plasticizing pressure should be as low as possible on the premise of ensuring the quality of the product. The specific value varies with the variety of plastics used.
2) Injection pressure: In the current production, the injection pressure of almost all injection machines is based on the oil circuit pressure.

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