Plate rolls bending machine: in which sectors they come in handy

Plate rolls bending machine: in which sectors they come in handy

Plate rolls bending machine: in which sectors they come in handy

Plate rolls bending machines are machine tools consisting of a series of rollers, designed to compress, stretch and finish various materials in the form of sheets or strips, therefore used in the paper, rubber and plastics industries, in the textile and, generally, in metallurgy.

 

Among the leading companies in the sector, Seravesi has been supplying technologically advanced plate rolls bending machines, lines for dished bottoms and customized solutions for sheet metal deformation since 1960.

Plate rolls bending machine: the E79 model of 1960Seravesi

The E79 of 1960Seravesi is a 3 Rolls Plate Bending Machine with total invitation made up of the lower rollers with variable axes and the motorized upper roll with hydraulic vertical movement.

The Rolls Plate Bending Machines of the E79 series of 1960Seravesi are available with capacities from 25 mm up to 300 mm and roller lengths from 1000 mm up to 6000 mm.

The invitation is obtained is excellent thanks to the high thrust of the upper roller which is used in this phase as a press brake. The revolution of its geometry. In fact, the lower rollers can be moved horizontally and independent of each other with a variable pitch, while the upper roller, which is motorized, translates vertically.

 

Main features of the 1960Seravesi E79 series

When we speak specifically of the Rolls Plate Bending Machines of the E79 series of 1960Seravesi we think of precise peculiarities such as:
  • Curvature of medium and large thicknesses. (recommended from 40mm to 300mm) It is the ideal machine because thanks to its particular construction concept it is equipped with reduced dimensions and a shorter rectilinear section than the traditional 4 rollers and thanks to the inclination of all three rollers, there is the possibility to perform even complex conical machining in a much simpler way;
  • The invitation obtained is excellent thanks to the high thrust of the upper roller used in this phase as a bending press;
  • Revolution of its geometry. The lower rollers can be moved horizontally and independent of each other with a variable pitch, while the upper roller, which is motorized, translates vertically;
  • Versatile: by increasing the center distance of the lower rollers, thick sheets can be calendared while by decreasing the center distance, low thickness sheets can be calendared and small diameter pipes obtained. Having a variable axis rolling machine is like having two machines in one;
  • Independent: the movement of the 3 rollers allows the creation of cones easily. The lower rollers and the upper roll can be tilted independently up to 2 °;
  • Safe: for the safety of the operators, thanks to this particular geometry, the sheet remains in a horizontal position during all the working phases. Furthermore, the machine is set up with mushroom-shaped emergencies for an immediate stop of its movement;
  • Simple to use and maintain thanks to an easy accessibility of the hydraulic parts and thanks to the diagnostics present in the control panel always within reach of the operator;
  • Small and compact dimensions compared to other calenders such as not to require the foundation hole up to a certain size.

Structure of the E79 model of 1960Seravesi (CE certified):

The 1960Seravesi E79 is a 3 Rolls Plate Bending Machine and is structured on a base made of electro-welded steel and subjected to normalization heat treatment. The support shoulders of the movement cylinders of the rollers are made of electro-welded steel and subjected to normalization heat treatment.

The rollers are in special alloy steel 42CrMo4 or carbon steel C45, forged and tempered.

- Motorized upper roller with planetary reduction gear and hydraulic motor.

- Side rollers with automatic braking system to avoid sheet slippage;

The linear potentiometers mounted on each roller (two for each roller) allow the electronic control of the parallelism of the rollers, while the radial bearings mounted on all rollers are orientable with double row of barrel rollers of the SKF or FAG brand.

The 1960Seravesi E79 is made up of 2 pumps and up to 8 for the larger sizes for maximum thrust in pressing and rotation. Having a system with several pumps you always have simultaneous movements, i.e. the possibility of both rotating and pressing at maximum capacity, and in the event of a pump failure, you can use the machine even if with reduced performance.

The cylinders are made of alloy steel and carbon steel, with chromed rod and use seals from leading brands. The hydraulic unit is composed of a motor pump unit, solenoid valves, maximum pressure valves which guarantee the protection of the system from overload.

The hydraulic opening bracket allows the horizontal extraction of the product tube, while the centralized and automatic lubrication system is equipped with a pump with an independent tank, programmable from the operator panel.

  • Siemens, ABB, Telemecanique, Moeller electrical system: it consists of a control panel with a mobile console connected to the machine with low voltage and a general cabinet where, in addition to the electrical components, also the SIEMENS S7 PLC for controlling the machine.
  • SIEMENS TP1200 with 12 ″ color touch screen display By changing the pages it is possible to view on the display: the position, the balancing of the rollers, set and read the inclination of the rollers, set their speed (2 rotation speeds), the diagnostic functions and machine alarm.
  • Modem to remotely control the PLC in case of remote assistance
  • Air or water oil cooling system.