What is the plastic shell injection molding process?

What is the plastic shell injection molding process?
First, what is the plastic shell injection molding process

Plastic shell injection molding process is a common plastic molding method, also known as plastic injection molding. It involves injecting heated and melted plastic into a mold and cooling inside the mold to harden into the desired shape. This process is usually controlled by automated equipment, which enables efficient, precise and repeatable production.

Second, what are the plastic shell injection molding process steps?

The main steps of this process include: mold design, raw material preparation, injection molding, cooling and ejection. These steps are described in detail below:

1, mold design: Choosing the appropriate mold is crucial to the success of injection molding. Mold design should be based on the required product shape and specifications. The mold can be single-hole or porous and can be divided into two parts, one connected to the injection molding machine and the other fixed on top to facilitate the removal of parts after injection molding. The material of the mold is usually steel or aluminum alloy because they are durable and keep their geometry stable.

2, raw material preparation: It is very important to choose the right raw material from a variety of plastics to ensure that the final product has the required physical characteristics and quality. Raw materials are usually granular and need to be heated to the right temperature before they can be melted and injected into the mold. Raw materials must also be kept dry at all times during production to avoid possible loss of quality.

3, injection molding: the process includes feeding raw materials into the heater to melt, and using the injection device to push the molten plastic into the mold. Injection molding machines are usually equipped with a pressure control system and a constant temperature control system to ensure that the injection molding process remains stable.

4, cooling: Once the plastic enters the mold, it will immediately begin to cool and harden. The cooling time depends on the raw materials used, the shape and size of the injection molding, and the mold design. After injection molding, the mold is opened and the product is removed from it. Some complex molds may require additional steps to remove any excess plastic or residue inside the mold.

5, pop out: when the mold is opened and the part is removed, the last step needs to be processed to pop the cured part from the mold. This usually requires an automatic ejection mechanism that can easily eject parts from the mold.

In short, the plastic shell injection molding process is an efficient, accurate and reliable method for the production of various plastic parts. The process involves several steps, including mold design, raw material preparation, injection molding, cooling and ejection. With the right implementation and proper control, a high quality finished product can be obtained and provides important protection and aesthetic appearance while extending the life of the product.