HIGH SPEED DRAWING
25-TON 4-POST PRESS RAM CONTROL SYSTEM HIGH SPEED HYDRAULIC POWER UNIT ELECTRONIC INTEGRATION OF CONVEYORS AND ROLL FEED EQUIPMENT
Food & Beverage Cans
The customer, a systems integrator in Colorado, approached Neff to supply a high speed draw press. This press will be integrated with a servo-roll feed and conveyor, which were both supplied by the customer. After integrating the press, feed, and conveyor, the entire line will be shipped to Shanghai, China. The end user will utilize this press in an R & D capacity to evaluate different types of alloys and how they react to the cupping process, which is the first stage in a canning line. The customer required the press to blank, clamp (1.75″ stroke), and draw the material (5″ stroke) in 1.5 seconds.
A special 4-post hydraulic press designed by Neff Press®. This press was designed with a bed size of 24″ x 24″ in between the pins, and 26″ of daylight. The press had multiple rams for several purposes. The two rams attached to the moving platen were both 3.25″ bore cylinders and were used for rapid advance of the moving platen and to blank/clamp the servo fed material. The center ram was a 5.0″ bore cylinder used to draw the material into a cup.
Neff designed a 75 horsepower high speed power unit to meet the criteria. Each cylinder had proportional pressure and flow control. Linear distance transducers were linked to the draw cylinder, and to the moving platen. Variable volume and pressure compensated piston pumps were used in conjunction with two accumulators to meet the peak oil flow demands. Ram speeds with the required stroke parameters traveled up to 2400 Inches per minute.
The Press was controlled by Neff’s Ram Control System. An Allen Bradley SLC 5/03 PLC with a 7-slot rack that included several analog cards was used for controlling the equipment. A dual axis closed-looped hydraulic control card interfaced with the PLC for position and tonnage feedback. An Allen Bradley Panelview 600 was selected as an operator interface, which included; recipe storage, diagnostic functions, preventative maintenance, and calibration functions of analog devices.