Design question for LPBF printed parts depowdering machine

Hello

My name is EL DIK Ahmad and I am a 3rd year student in Industrial Systems.
As part of a project, I have to model a depowdering machine for parts printed in LPBF (metal 3D printing, mainly titanium). The school already has a printing machine, but there is a lack of an automated solution for the depowdering stage.

I have already made a diagram of my general idea: the objective is to make the printed parts vibrate, blow compressed air on them and use gravity to extract as much residual powder as possible.

In the attached figure, I show the principle of the system.
The problem I have is this: I would like the vibrations to act only on the parts, and not on the whole machine. I had thought of attaching the vibrating motor to the rope launcher ("pull starter"), which is already used to rotate the printed parts, in order to avoid adding a second motor.

However, I am looking for a solution to isolate the "vibrating motor – pull starter – parts support – parts" system from the U-shaped rotation axis, so that this axis is not subject to vibrations.

Do you have any ideas or possible solutions (type of assembly, anti-vibration elements, mechanical design, etc.) to obtain this vibration isolation while maintaining the rotation of the parts?

Thank you in advance for your help.

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