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What are the two main units of injection molding machine?

TIME:2021-01-15 Share

In a cycle of the injection molding machine, a certain amount of plastic can be heated and plasticized within a specified time, and the molten plastic is injected into the mold cavity through a screw under a certain pressure and speed. After the injection, the molten material injected into the cavity is kept in shape. The above is called the injection unit of the injection molding machine.

What are the two main units of injection molding machine?
1. Injection molding machine-introduction of plasticizing unit
This part of the plasticizing unit is used to plasticize (melt) plastic particles, and it is also responsible for pushing the melted plastic into the mold. For melting plastics, we can think of immediately including heating. When it comes to advancing plastic injection, we will almost certainly think of injection syringes. Yes, the plasticization unit is indeed designed based on this basic idea.

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2. Injection molding machine-introduction of clamping unit
After talking about the plasticizing unit, we know how the injection molding machine melts and shoots glue. The molten plastic leaves the plasticizing unit, that is, after being ejected from the nozzle, it enters the mold on the side of the clamping unit. The mold is generally in two halves, so when shooting the glue, the two halves of the mold must be closed and closed tightly. Otherwise, the injected molten material will open the mold, the molten material will overflow, and the product cannot be formed normally. The overflowing material is called flash (or flash) after cooling and solidification, which is a typical product defect. Therefore, the clamping unit to be discussed next is undoubtedly used to lock the mold.

When you face the operating side of the injection molding machine, the left half is the clamping unit. Obviously, we can see that there are 4 tie rods (also called the Corinthian column) and three templates: fixed template (head board or first board), mobile template (middle board or second board), support board (tail board or third board) ). The fixed template is fixed and is closest to the nozzle. The movable template can move back and forth along the rod direction. The two halves of the mold are respectively installed on the fixed template and the movable template. The movable template moves back and forth to close and open the mold. The back of the movable template is connected to the elbow bending mechanism (bending arm mechanism), and when the elbow is bent to expand and contract, the movable template moves forward and backward with the movable template. The expansion and contraction of the elbow itself is driven by the clamping cylinder.

The fully electric injection molding machine is slightly different from the hydraulic injection molding machine. There is no clamping cylinder on the full motor. It is replaced by a servo motor + timing belt + ball screw. The function is the same, but it is better.

The above four LISONG Machinery introduced you some information about the 2 injection units. For more injection molding machine problems, please leave a message to us!

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