It consists of two rectangular steel tubing frames. One is stationary, the other is movable. It is supported in a nailaguide sliding block, bearing sliding block and actuate bar system, and has a b idler roller at either end.
The web can be fed over the TRA in A ’U’ shaped path, reversing its direction of travel, or through the TRA in A ‘Z’ configuration, maintaining the same direction of travel.
It is insensitive to attitude and can even be mounted upside down.
Solidly supported on all four corners by nailaguide bearings, it is not subject to deflection caused by cantilever stresses. Radial bearings are sealed, and liner bearings are self-cleaning and self-lubrication. The unit therefore requires no maintenance.
DESCIPTION
Standard adapter bases consists of a stationary floor mounted frame or plate, a four unit, standard nailaguide bearing and support system, and a moving frame of plate. A heavy duty servo cylinder is tested between the frame and the nailaguide bearings. The servo cylinder moves the upper adapter base plate back and forth in response to hydraulic signals from the power unit.
THE PRINCIPAL
The TRA is designed so that is swings in an arc laterally, pivoting about an imaginary pivot point located exactly in the plane of the entering web path. The servo cylinder swings the other end of the frame, moving the outgoing web laterally back into the desired web path. because the TRA correction range is incretions angle and be kept small to reduce induced stresses to guide within the tension loop on your process.