Snap-off roller separation drums type A 357 B are used when injection-molded or die-cast parts are still firmly connected to the sprue after demolding from the mold and need to be separated or “snapped off” from each other. must be removed before the actual separation can take place via the separating gap. The knock-off roller separator drum type A 357 B is based on the roller separator drum type 357 B. Compared to the basic model, it has a reversible drive and often a knock-off medium in combination with a catch plate at the drum outlet. In addition to the actual separation process, the knock-off drum also serves in the first step to break existing connections between the good part and the sprue, i.e., to "knock off" the parts from the sprue. Depending on the part geometry and the "toughness" of the connection, it is sometimes sufficient for the components to be separated from the sprue by the rotation of the drum cage and the falling processes within the cage. For more stubborn joints, it is sometimes necessary for a knocking medium (e.g., a piece of hardwood, a plastic or steel tube, a brush roller, etc.) to fall regularly onto the components. This knocking medium rests loosely in the drum cage. To prevent the knocking medium from falling out of the drum cage, an adjustable catch plate is mounted at the end of the discharge. A reversing control rotates the drum cage alternately clockwise and counterclockwise to precisely direct the knocking medium onto the parts. The individual rollers are made of galvanized steel, stainless steel, or PVC and can be individually adjusted along the drum diameter. This type of separating drum is therefore suitable for both very small and larger and heavier components. A belt stretched around the drum cage and connected to the base ensures that all rollers rotate in opposite directions as soon as the cage turns. This significantly reduces the risk of parts jamming in the separating gaps. Furthermore, this roller separator offers the advantage that every gap between the rollers is a separating gap, thus enabling high throughput rates. The throughput is almost twice as high as with a comparable roller separator drum with planetary central adjustment. Due to the individual adjustment of the roller distances, the changeover process takes significantly longer compared to a roller separator drum with planetary central adjustment. Accordingly, this design makes particular sense when the range of parts is limited or changeovers are only required infrequently. This type of separator drum is therefore especially suitable for high-volume products. In some cases, it can be advantageous to interchange several pre-set separating drum cages to achieve faster changeover times. Depending on the specific requirements, these separating drums can be manufactured with separation lengths of 700 mm, but optionally also 500 mm, 1,000 mm, or 1,200 mm. Due to the two necessary processes – cutting and separating – These separating drums are generally longer, i.e., 1,000 mm or 1,200 mm. To separate more than two different fractions, the inlet and/or outlet ring of the drum can also be equipped with, for example, holes or tubes. This allows for combinations of hole/roller separating drums or tube/roller separating drums. The Type 357 B roller separating drum is an extremely robust and reliable aid in production for efficiently separating mass-produced parts – even under demanding conditions.