very cool Steve and very fast.
A guess is
@salcoco will buy one like this from you.
The concept I have on paper starts out with a box shape frame, a plunger on top which is pulled straight down, between 100 and 150 mm directly into the vacuum corking tool (?? force). All the power delivery is below so the center of gravity is low. An Arduino board is controlling safety's/ starting the cycle/ detecting the stop point/ reversing the cycle/ possible also alternating inserting the cork and placing a guard over the vacuum head,
From the look of it you welded a longer arm on original lever gaining leverage (1.5 to 1). A larger diameter cylinder could also increase the force output (pneumatic pictured is 1 inch by 6 ??). For safety you should consider controlling the speed by putting a needle valve in the air line and control the maximum force with an air regulator.
Any idea what force you are designing for?