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Dec 29.2021

When designing injection molds, these kinds of parameters should be paid attention to!

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Injection mold design should pay attention to these parameters

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Three keys

There are two templates on the injection molding machine, one is not moving, called the fixed template; the other can be moved, called the moving template. The mold is fixed on the two templates by screws and pressing plates respectively. When the mold is opened, the movable template of the injection molding machine moves, thereby driving the mold to open.
After the mold is manufactured, it is necessary to carry out injection molding, put on the injection molding machine, and start to produce products. However, there are many models of injection molding machines, and each injection molding machine has its own parameters. The design mold must be able to meet the requirements of the injection molding machine model provided by the customer, otherwise it will not be able to produce.

①Injection volume
The injection volume is the maximum mass value (or volume value) that the injection molding machine can shoot at one time during production, and represents the maximum injection capacity of this type of injection molding machine. The amount of melt used in the designed mold is less than the injection volume of the injection molding machine. Otherwise, the product is dissatisfied and cannot be produced.

②Clamping force
It is the pressing force of the injection molding machine on the template when the mold is closed. The clamping force required for the molded product during molding must be less than the rated clamping force of the selected injection molding machine. Otherwise, the glue will easily run off the parting surface, resulting in flash.

③Tie rod spacing
There are four tie rods in the dead corners of the fixed template and the movable template of the injection molding machine. Their function is to ensure that the injection molding machine has sufficient strength and rigidity, and is responsible for sliding the template. But it tends to limit the overall dimensions of the mold, because the mold is hoisted in from the middle of the tie rod when it is installed.
The dimensions of the mold cannot be larger than the distance between the tie rods. If the length of the mold exceeds the distance between the tie rods, check whether the mold is hoisted into the rod workshop by rotating. If the rotary hoisting cannot be carried out, then the mold size can only be changed. , Or replace the injection molding machine.


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