Installation of Mold

This section will explain the key points to consider when mounting molds onto a plastic injection molding machine.

Mold clamp

Consider mounting the mold onto the injection molding machine.
The illustration below shows the mounting using a clamp.
At this point, you must be careful not to let other parts collide with the clamping device.
The image on the right shows the method of directly attaching bolts to the injection molding machine. During the design, the bolt holes on the cavity-side clamping plate and the core-side clamping plate must be confirmed in terms of size and position.
Mold clamping method

The process of installing molds onto a plastic injection molding machine

When working in an injection molding machine, be sure to turn off the power to the machine.
The mold installation procedure is illustrated with the following animations.
1. Clean the surface of the mold, and do not mount the injection pump onto the mold yet. Mounting the mold into the injection molding machine requires careful attention.

2. Adjust the mold clamping devices, but do not tighten the mold locking mechanism yet.

3. Use a crane to lift the mold and clamp the mold on the cavity side using the cavity adaptor plate..

4. Adjust the clamping device/mold clamp on the core side using the core adaptor plate.

5. Move the pump housing of the machine. Determine the installation position of the mold and adjust the nozzle spacing; a positioning ring should be installed on the mold to facilitate this process.

6. Adjust the clamping devices manually. Check the mold’s moving parts and the lubrication system.

7. Adjust the ejection range of the ejector pin.

Plastic injection molding clamp bolts

The bolt hole positions of the clamping plate on the press are determined according to JIS standards.
The bolt size used is determined according to the molding force.

[Mounting bolts and molding force]

Mounting bolts
M12
M16
M20
M24
Pressure
less than 30 tons
More than 30 tons
Less than 300 tons
More than 300 tons
Less than 600 tons
More than 600 tons

 

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