Rotary cutting die with edge strippers
A rotary cutting die is formed of cutting blades 44 mounted to a die base 42 which is secured on a cutting roller 40 that cooperates with an anvil roller 50. The die includes trim strippers 10 mounted adjacent the blades and which are of a generally pentagonal shape having upper stripping faces (12 fig 2) which are angled to the base (14 fig 2). The strippers are formed of a close cell material, such as rubber, to enable them to deform elastically when forced into contact with an incoming blank of cardboard material CB. The strippers may have a flexible finger-like projection or deflector 126 protruding from an upper surface. The deflector serves to provide additional downward deflection of the ejected scrap material once the scrap is released.
In this paper a study for very high efficiency targeting 99 % range converter is described. We have proposed a new soft switching boost type chopper based on snubber assisted zero voltage and zero current transition (SAZZ) with output diode fabricated “SiC schottky diode”. The output power of 8 kW with the efficiency of 98.96% was obtained. The loss breakdown evaluation of SiC-SAZZ is discussed.