mold construction design for rotary shaft multi shot molding

In my previous blog, we’ve talked about the mold construction design for rotary platen multi shot molding, so here I’ll continue to share you my understanding for the rotary shaft molding.

Rotary shaft multi shot molding

The rotary shaft multi shot molding is similar to the rotary platen molding, and adding additional capabilities: The rotating platen can now be retracted from the core half. In addition, the cavities and cores of each stage have different geometries. Axis rotating performs switching between different core / cavity sets.

And it is common used in 2 component toothbrush molding!
Check below video for better understanding:

The rotary shaft 2k molding is more complex than the rotary platen 2k molding, and it requires a more complex mold construction design. This complexity further increases the 2k mold cost and delivery time, but it allows for the production of more complex multi component molded parts.

If you’re still looking for the good two materials mold maker in China, then we can be your another good choice.

Lucia

focaremould@yahoo.com

mold construction design for rotary platen multi shot molding

In the past, a multi materials part was done by using additional secondary services or more complex assemblies. However, today’s multi materials injection molding largely eliminates these additional requirements, making it much more easier to manufacture complex finished parts, faster and cheaper.

According to moving different molded parts can be divided into:

1.      Rotary platen multi shot molding

2.      Rotary shaft multi shot molding

3.      Core toggle multi shot molding

Rotary Platen Multi Shot Molding

The mold core plate contains two identical cores that are mirrored on the centerline of the platen and coincide with the axis of rotation. The cavity plate connected to the fixed platen contains two cavities with different geometries. In each cycle, the rotary platen completes the switching of the molded parts, and eliminates the need for manual switching.

Check below video for better understanding!

Here we only show the two materials mold, which can actually accommodate more materials. The rotary platen can be rotated by 90°, 120° or 180° depending on the amount of material used. Also it will need a special injection machine to provide the required rotation on the core side.

And on my next blogs, I’ll share you my understanding of mold construction design for Rotary shaft multi shot molding & Core toggle multi shot molding!

Hope it will help you for your multi materials molding !

Lucia

focaremould@yahoo.com

how to choose the suitable two color machine for your bi material molding ??

There are several different types two color machine, then how to choose the suitable one for your bi material injection??

Well, the first let’s talk about the turnable (table rotary) machine with two parallel injection units, it is suit for the most 2k plastic housewares! And 280T will be ok for the max. 300mm part dimension!

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Then customer may tell that they do not want the rotary table, as the machine cost will be much higher than without the table ones! If so, and you still want to run it in 2k automatically, then a transfert robot will be needed!

You’ll need the robot to pick the first color part, and put it again into the second color’s position, to have it second color injection! And by this way, then no problem the second nozzle is on the vertical side, L side or just upward the first nozzle, we can do the mold custom to fit with your machine!

The next let’s talk about the axis rotary (shaft rotary) machine, it is suit for the plastic parts which have both sides double colored, for example the toothbrushes!

And I’ll share more details in my next blog about the toothbrush making machine!

Hope it will help you!

Lucia

focaremould@yahoo.com