Davi
Plate Roll
Three Roll
MAV – VARIABLE GEOMETRY PRESS-ROLL
RANGE
For plate thickness from 80-100mm (3-4 inches) and above, it’s the best solution for very heavy duty applications in materials with medium to high yields and ultimate tensile strength. It’s been designed with many advancements and exclusive benefits.
PRESS-ROLL DESIGN
As in a press brake, the MAV’s top roll moves in an up and down direction while the two side rolls move in and out, changing the bed width, like the bed of a brake. Very easy to operate.”
The plate is fed by the rotation of the rolls and as it is fed through around the top roll, the necessary diameter is achieved.
VARIABLE GEOMETRY
The variable geometry of the MAV allows the operator to move each side roll in and out independently to optimize the best leverage for any application. Unlike other fixed side roll three roll machines, the side roll can be positioned to minimize the flat end, thus allowing the MAV to have the shortest flat end possible.
By moving the side rolls away from the top roll as far as possible, the bed can increased to roll the thickest plate in the industry. All three rolls can be tilted and moved independently for a large angle during cone rolling.
MCO – THREE ROLL DOUBLE PINCH
RANGE
The most common design in the plate roll market, with a fixed top roll, the two side rolls swing up for pre-bending and rolling. Costing less than a four roll, the MCO three roll double pinch can roll plates from 15-20 mm (5/8 – 3/4 inch) thickness, up to 80-100 mm (3 – 4 Inch), or more, ideal for limited production volumes.”
NO REMOVAL OF PLATE
The MCO uses both side rolls to prepend the plate, called “double pinch” therefore both ends of the plate can be pre-bent without removing the material from the machine (impossible on any single initial pinch, asymmetric designed machine). As the side rolls raise and lower to pre-bend the two edges, the large free access allows to form high stock bar through the rolls, compared to other roll designs.
POWERED ROLLS
The MCO has three independently powered rolls, mounted directly to each roll shaft to offer the market’s most powerful torque transmission available. This ensures excellent plate feeding without the risk of plate slipping. Standard feature on other brands offer only the top roll OR only the two side rolls powered, making thin, narrow or large diameter cylinders hard to properly feed. Optional auxiliary motors can be offered on request, but these are small and without much power.
ACCURATE FEEDING
All three rolls are safely braked efficiently, automatically and hydraulically instead of using low efficiency, consumable brake linings common to other brands.
Four Roll
MCA – FOUR ROLL
RANGE
Innovative and exclusive in design, to roll plate up to 10-15 mm (1/2 inch) thick. Accurate, fast, easy and intuitive, it is the most high-tech plate roll for “light gauge” in the market.
ONE PHASE CYCLE
Unlike on a three roll plate rolling machine, there is no need to pre-bend the two edges of the plate first and then roll the cylinder. A cylinder can be rolled, including the pre-bending of both ends, feeding the plate forward through the rolls in a single motion. ”
The operator needs to only find the correct position of the side rolls to successfully roll the plate.
CNC CONTROLLED
Different choices of CNC controls are available, from an entry-level, user-friendly CNC to roll parts in automatic mode or more powerful and advanced DAVI CNC controls in the industry which can be self-programmable reducing the need of the most experienced plate roll operator.
ACCURATE FEEDING
Unlike other brands using brake linings that wear out, Davi incorporates the safety of automatic and hydraulic assisted braking for both clamping rolls to ensure accurate plate feeding.
HORIZONTAL FEEDING
Plates are loaded horizontally to allow the use of an in-feed conveyor and automated loading and unloading systems. The CNC controlled plate roll then becomes an automated un-manned rolling center greatly reducing cycle times, ideal for high quantity production runs.
MCB – FOUR ROLL
RANGE
The most advanced machines to roll plates from 15-20 mm (5/8 – 3/4 inch), up to 80-100 mm (3 – 4 inch) thick and more. Accurate, easy, intuitive and fast (up to 6 meters – 20ft per minute), it is the most high-tech in “high productive mid-heavy application” in the market.
ONE PHASE CYCLE
Unlike on a three roll plate rolling machine, there is no need to pre-bend the two edges of the plate first and then roll the cylinder. A cylinder can be rolled, including the pre-bending of both ends, feeding the plate forward through the rolls in a single motion. Once the correct position of the side rolls are determined, the plate is rolled successfully.
CNC CONTROLLED
Different choices of CNC controls are available, from an entry-level, user-friendly CNC to roll parts in automatic mode or more powerful and advanced DAVI CNC controls in the industry which can be self-programmable reducing the need of the most experienced plate roll operator.
ACCURATE FEEDING
Unlike other brands using brake linings that wear out, Davi incorporates the safety of automatic and hydraulic assisted braking for both clamping rolls to ensure accurate plate feeding.
HORIZONTAL FEEDING
Plates are loaded horizontally to allow the use of an in-feed conveyor and automated loading and unloading systems. The CNC controlled plate roll then becomes an automated un-manned rolling center greatly reducing cycle times, ideal for high quantity production runs.
Angle Roll MCP
The DAVI three roll MCP section roll was engineered to meet the requirements of very demanding customers, who need to bend large and extra large dimension parts with very strict tolerances.
From aerospace to shipyard, from automotive to structural, engineers are always designing solutions of more sophisticated bent parts, made out of hard material that can only be obtained by bending non-standard profiles at very tight diameters with strict tolerances.
The Heart of the MCP:
The DAVI MCP offers some unique features and advantages over other section bending machines available in the market.
– By using the latest generation of CAD and testing the results on FEM software, the MCP has the heaviest and strongest machine structure in the industry. – The high resistant large diameter hardened allow steel shafts rotate on pre-greased, self-aligning roller bearings, ensuring excellent performance and efficiency with virtually no deflection.
– Three independent hydraulic motors and three high torque planetary drives (one for each roll) are coupled directly to the rolls through a splined shaft, for a powerful torque transmission to ensure an easy feeding of the sections during the rolling process.
– To avoid deflection of the shafts, the planetary guide system is powered by hydraulic cylinders mounted outside the main machine frame, as close to the bending area as possible.
– Guide rolls, adjustable in three directions, are activated by hydraulic cylinders controlled from the console panel. A standard feature on the complete MCP machine range.
– High quality hydraulic components offer the best performance for a long duration
The DAVI MCP machines are completed by a range of CNC control choices: from simplest to the most advanced for automatic production.
Rolls and Accessories:
– A modular set of dies are standard, hardened and made from high strenght steel alloy to reduce wear. They are designed to successfully bend most standard sections common in the market.
– All customer applications are evaluated to ensure that the best possible solution be proposed to help reduce production times and improve the final product.
– An extensive list of accessories is available, including: hydraulic traction unit, metric wheels for automatic production, special set of guide rolls for non-standard shapes in addition to several others. These accessories allow the DAVI MCP machine to bend standard and non-standard profiles, including heavy duty beams, pipes and spirals.
In addition, Davi has engineered and produced the heaviest section roll in the world.
MAV
MCO
MCA
MCB
Angle Roll MCP