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This multiblanking line, installed in 2009 at North American Stainless (NAS) in Wrightsville, Pennsylvania, has been processing high-quality stainless steel for 14 years. The blanks cut on this type of line are particularly suitable for sectors that produce large quantities of similar-sized blanks, such as household appliances, pipes, etc.
This line operates at 140 cycles/minute with up to 5 rectangular pieces per stroke. It works in continuous mode thanks to a rotary shear, offering the highest surface quality.
Countries USA
Sectors Service Centers Automotive Aluminium
Technologies Cut To Length Lines
Multiblanking slitting lines are designed to transform a coil into several flat parts. Regardless of the sector they are intended for, the main characteristics of the resulting product are:
Our cutting-edge technology ensures high surface quality, which is particularly crucial when processing delicate metals like stainless steel, O5 steel, and aluminum. We prioritize optimum flatness, ensuring each product meets the highest standards of precision. Additionally, our process guarantees burr-free cutting quality, ensuring smooth, clean edges every time. A key aspect of our service is the meticulous attention to the perfect geometrical stacking of bundles. This careful handling avoids any dents or marks, preserving the pristine condition of each piece.
In addition, these lines are characterized by their ability to work in single or multiblanking mode (up to 6 blanks per cut). In multiformat mode, these lines can cut several blanks at the same time and are ideal for increasing production when cutting small sheets.
These lines offer high productivity rates. They can run at a maximum speed of 100 m-40 in/min, and up to 6 blanks per cut and 100 blanks/min in single-format mode or 33 blanks/min in multi-blanking mode.
Minimizing set-up times is key in a multiblanking line to achieve performance and productivity rates, so our lines include features such as automatic loading, feeding and threading, fast automatic cassette change (<5 min), LSA (Leveler Setting Assistance), digital platform for machine diagnostics and preventive and predictive maintenance, and stackers with automatic positioning of guides and stops.
Other features of multiblanking slitting lines are similar to those of slitting lines, with the difference being the incorporation of a rotary shear. Placed before the catenary of the line, it cuts the strip into smaller strips. Once the cut has been made, it is necessary to separate the strips from each other in order to carry out the subsequent processes. After the strip cutting process, it is possible to process the edges by cutting them (with shears) or by winding them.
Due to the wide variety of materials and sectors for which these types of lines are intended, they must be completed with a series of complementary solutions. To be highlighted:
The type of levelers usually used in these lines is of 3 heights and process materials up to 4-5 mm (0-15-0.19 in) maximum thickness. As in the cut-to-lengh lines, these levelers are equipped with functions such as: automatic cassette change (<5 min), multi-drive control and Leveler Setting Assistance (LSA) application, roll cleaning system, materials and finishing of levelling rolls, among others.
These cut from top to bottom and therefore have the highest accuracy in terms of cutting linearity. In addition, because the material is stationary at the time of cutting, these shears achieve minimum burr values. In addition, they have an oscillating movement which allows them to cut trapezoidal shapes.
On the other hand, the productivity of these shears is lower than that of rotary oscillating shears. They are lines that work in a pit and the feeding is done in a cyclic manner. The shears are equipped with an automatic die change feature in order to make curved cuts, omega cuts, etc., and automatic clearance adjustment.
These are intended for high-production lines (up to 200 cycles/minute) in which the shear cuts the material by means of the synchronized rotation of the upper and lower head. They are lines that work by pulling, and feeding is controlled by a pre-feeding roller and measuring wheel. Because the lines work by pulling, they do not need a pit and therefore are simple installations. The shears are equipped with a blade change feature and automatic clearance adjustment.
Electromagnetic stackers are used in this type of lines. Due to the fact that several blanks can be produced for each cut, the stacker must have alternative solutions to the conventional buffers that guarantee the correct stacking.