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What are the three small pieces of the screw head of the vertical injection molding machine?

The application of plastic products is closely related to people’s lives, and injection molding is an economical and energy-saving processing method in the field of plastic processing. Among these parts, the vertical injection molding machine “screw” is the key component, and different plastics have their own physical properties, which makes the design of the injection molding machine injection screw also different.

In the past, experience was generally used to judge the design of the injection screw of the plastic machine, but the cost was too high and could not necessarily solve the problem, so some components of the injection screw of the plastic machine are worthy of our discussion and analysis.

The vertical injection molding machine screw head group consists of three parts:

1. Glue head.

2. Pass the glue ring.

3. Musons.

They play a role in the whole screw combination, such as mixing and plasticizing, which is a more important part, and the quality problems of many plastic products are closely related to the three parts of the screw. Often because many details of the three-piece set are not dealt with well, the rejection rate of plastic products has increased significantly, and even forced to stop for maintenance.

The function of the rubber ring is to play a role in preventing reversal. This is a component that prevents the plastic melt from leaking backwards during the injection molding process. During operation, the rubber ring is in contact with the glue meson to form a closed structure to prevent the plastic melt from leaking.

The accuracy of the weight of the injected product on the injection machine has a lot to do with the speed of the anti-reverse action of the rubber ring and the meson. However, due to factors such as its anti-reverse motion stroke, sealing pressing time, and time away from the rubber head, the speed of the reaction speed of the rubber ring action is determined.

A good combination of glue head, rubber ring and glue meson can achieve high-precision injection control. In particular, the molding of transparent products and precision products is reflected in these three functions.

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