EXHIBITOR STORIES

 

DAVI - LEADER IN DESIGNING AND MANUFACTURE OF WHOLE RANGE OF PLATE AND SECTION BENDING MACHINES
 
 
 
The MCA rolling machine FOUR ROLL HYDRAULIC PLATE ROLLING MACHINE WITH DUAL PRE-BENDING line is the ideal apparatus to bend plate up to 10 mm thick and up to four metres wide. It is accurate, user friendly and fast (plate advancement speed of six mt/min) and represents the best available on the market today. The leading edge is automatically calculated (when CNC is supplied) and this results in the shortest leading edge flat end on the market. The MCA can roll the plate without removing, turning or reintroducing the plate as required by a single leading pre-bending machine used for this range of plate thicknesses. Unlike three roll models that require pre-bending on both ends, the MCA only requires that leading edge is pre-bent.
Another important advantage is the possibility to make a shell in a single pass. The operator needs to identify only the lateral rolls position whereas on the three roll machine it is necessary to identify the six or nine positions to bend successfully a single shell. The MCA concept from its inception has been designed for a complete automization package. Even the basic model is equipped with programmable visual displays with the possibility to memorize the lateral rolls position and (with the exception of the plate advancement which is performed manually) to perform an automatic cycle.

THREE ROLL HYDRAULIC PLATE ROLLING MACHINE WITH VARIABLE AXIS "MAV"
The MAV three roll machine is the most innovative ad revolutionary machine on the market. It is a rolling machine that has many advantages unavailable on any other three roll machine. The MAV with is "variable axis" is the simplest and easiest rolling machine to use. It works as a press in the pre-bending of the plate edges and it is in fact more widely known as the Press-Roll". Reducing the distance between the lower lateral rolls it is possible to obtain an excellent flat end, in fact the length of the flat end is the shorter than any other three roll machine. If the distance between the lateral rolls is increased, this allows very thick plates to be bent, thus increasing the capability of the machine considerably.

Pre-bending is performed by "pressing" of the upper roll (and not by lower roll moving or swinging up from rest position which will automatically cause the plate to tilt). The result is the plate is handled always horizontally and not tilted dangerously during the pre-bending process. The bending process in the MAV means the weight of the plate does not influence at all the pressing power of the machine because the rolls are not elevated. Thanks to its innovative frame design the MAV is the most compact rolling machine currently available on the market and even for medium large capacities, it does not need to be placed in a pit. Cone rolling is also much simpler than with any other three roll design as all three rolls can be moved independently to adapt perfectly to the geometry of the cone to be formed.