Revision 0.1
It's a 3D printable automatic changer for JUKI 50x nozzle using wtih Ray Kholodovsky's custom made holder in OpenPnP project.
Assembly:
Please use a wide and flat sanding file for better adhering parts together, also use thin fine sanding files to make top surface and sliding ramp path smooth. Teflon spray coating is strongly recommended for silky smooth action and prolong the life of there parts. You may need a good plastic adhesive cement for final assembly. But, take care of clip when apply adhesive cement around - it should move freely.
Ganged mount plate can be modified to increase as much changer units as required by editing 'gang' parameter in "ganged_mount_plate.scad". Use M3 cap head hex screw L35mm x2 and L10mm x1 to fix each changer unit on this plate after M3 screw tapping. To fix the plate, use M4 pan-head screws.
Nozzle holding sequence:
- Holder moves down at the nozzle locating home position while outer ring sleeve moves toward upside enough.
- Holder slides horizontally toward ramp opening and leaves home with the nozzle dragging together.
- Nozzle moves upward a little bit (1mm) in the sequence at above and connects with the holder.
- Next, outher ring sleeve moves downward (2mm) and expand spring fully (at the top surface down slope part).
- Nozzle leaves from the changer and holding process is done.
Inspired by 'Pick-and-place automatic nozzle changer' - Karl Ekdahl. https://vimeo.com/144454866
Big thanks to Ray Kholodovsky!