The basic purpose of a plate roll machine is to bend flat sheet metal into a certain shape. Plate roll machines are available in three types: initial-pinch, double-pinch, and CNC-controlled. Each type has its uses. To learn more about them, keep reading! Here are some common types. The main difference between these two types is the configuration of rollers. Variable-geometry plate rolls are commonly used for small to medium-sized jobs.
Three-roll initial-pinch plate rolls:
There are two basic styles of plate roll machines. One type is the 3-Roll plate roll. These have two lower rolls and one top roll. These are often called “double-pinch pyramid plate rolls.” The top roll stays stationary while the lateral rolls move in an arc. The lower roll is used to pre-bend both edges of the plate, making it easier to stack plates.
Four-roll double-pinch plate rolls:
A plate roll machine is a type of bending equipment with two or more rolls. Four-roll double-pinch plate rolls are available in light and heavy capacities. The three-roll style has one fixed-position top roll and two lateral offset rolls, while a four-roll style has the fourth roller underneath the top roll. Double-pinch plate rolls are useful for pre bending both ends of a plate without removing it from the machine.
Variable-geometry three-roll plate rolls:
The hydraulic 3 roll variable geometry plate roll machine offers a full range of options for heavy-duty plate-rolling applications. Its multi-movement design allows the user to view all three roll positions and control the machine’s rotational speed. Variable-geometry plate rollers also have a PLC 7-axis machine controller. The machine can be used in either a manual or CNC mode.
CNC-controlled four-roll plate bending machines:
The HR-4 series of CNC-controlled four-roll plate bending machines is great for medium-volume production runs. The sturdy, fully hydraulic design and dual motors power the top and bottom rolls. The machine can work with materials from 2mm to 44mm thick and can accommodate multiple thicknesses. Its large working area is versatile and is available in 1,2m to 4m lengths.
Various plate roll machines are available for different applications. Some of them can be used for heavy-duty and very thick plates. The roll movement in a three-roll machine is reduced, increasing the bending process’s mechanical advantage. The machine’s geometry can be adjusted to bend plates like single-pinch style machines. These machines require minimal sheet movement during pre-bend operations. Some are even capable of bending extremely thin materials.