We have an assembly machine, with eight stations.
There are 7/16" X 6" cylinders. Automation Direct A07060DN with a clevis on them ARC-10-32
These lift/drop a carrier for syringe bodies.
One cylinder pushes the syringe and the carrier down to snap the cap onto the end, and other cylinder lifts the carrier, and syringe back up.
There is a 12mm linear rail, with bearings on it. Then an adapter from the bearing to the carrier for the syringe.
The issue is the clevis is tearing up the adapter "ear"
This runs 100 parts per minute, so each cylinder is cycling 12-14 times per minute.
We had some clearance for the clevis pin in the "ear" to prevent any binding, but that allows it to clatter/hammer.
There is 60 psi, so that gives 9 lbs of force.
Trying to think of a way to absorb the shock, and stop ripping the ears off the carrier.
The ear is .125" thick, and .7 wide 6061 aluminum.
We could add plastic bushings, but will they hammer out, and provide contamination?
Also considering a double linkage to replace the clevis, to allow some motion without clearance for the hammering.
The only force should be tension.. Don't understand why the bottom of the "ear" is getting hammered.
The lift cylinder is only powered in the Up direction, otherwise free falling.
Any great ideas?
My first ever attempt at attaching a picture....
There are 7/16" X 6" cylinders. Automation Direct A07060DN with a clevis on them ARC-10-32
These lift/drop a carrier for syringe bodies.
One cylinder pushes the syringe and the carrier down to snap the cap onto the end, and other cylinder lifts the carrier, and syringe back up.
There is a 12mm linear rail, with bearings on it. Then an adapter from the bearing to the carrier for the syringe.
The issue is the clevis is tearing up the adapter "ear"
This runs 100 parts per minute, so each cylinder is cycling 12-14 times per minute.
We had some clearance for the clevis pin in the "ear" to prevent any binding, but that allows it to clatter/hammer.
There is 60 psi, so that gives 9 lbs of force.
Trying to think of a way to absorb the shock, and stop ripping the ears off the carrier.
The ear is .125" thick, and .7 wide 6061 aluminum.
We could add plastic bushings, but will they hammer out, and provide contamination?
Also considering a double linkage to replace the clevis, to allow some motion without clearance for the hammering.
The only force should be tension.. Don't understand why the bottom of the "ear" is getting hammered.
The lift cylinder is only powered in the Up direction, otherwise free falling.
Any great ideas?
My first ever attempt at attaching a picture....