Two jaw self-centering clamping mechanism 1

This mechanism is applied to carton box stretch wrapping machine.
Turn the red screw to unlock the yellow slider and push it to clamp the carton box or pull it to increase the distance between the two blue clamping jaws.
The synchronous movement of the two yellow slider is realized by means of a double slider-crank mechanism (jade crank, two pink conrods).
A video showing how a carton box stretch wrapping machine works:
https://youtu.be/gAONoTb5mD8

STEP files of this video:
https://www.mediafire.com/file/zt3hr2gfpgeqex2/2JawSelfCenteringClamp1STEP.zip/file
Inventor files of this video:
https://www.mediafire.com/file/8930htugsztw7il/2JawSelfCenteringClamp1Inv.zip/file

Видео Two jaw self-centering clamping mechanism 1 канала thang010146