Circular sheet metal bender KSL-1610 is used for cold bending of plates with three rollers.
The stand of the machine is derived from welded steel sections and is rigid enough to take all the burden resulting from the operation of the machine. Therefore, no special foundation is required. Beneath the protective plate in the driving part there is the hydraulic generator, electric motor drive and the main electrical. The keyboard is placed in front of the rollers burner console.
The upper roller is molded into a rolling bearing and has no drive rotation. The outer bearing is rebuttable (by hydraulic cylinders) due to removal of curved cylindrical jacket. Falling of beds is possible only after removal of side rollers, after unloading the upper roller . The inner roller remains in the same position after the overthrow of the outboard bearing.
The side rollers are also driven by a separate planetary gearing with its electric motors. Both of the planetary gear motors ara connected to the power supply through the frequency controller (inverter). Switching operation is performed by pressing and holding the right and left direction. RPM of rollers is elected by the potentiometer of the keypad. For easier performance of pre-bending rollers remain locked by the effect of dynamic DC electric brakes for 20 seconds after stopping the rotation. In case of activation of turning to the left or right direction by pressing the appropriate buttons on the keyboard the effect of DC brake stops automatically.
The side rollers are lifted and lowered independently using hydraulic cylinders. Lifting and lowering of side rollers is performed by pressing the appropriate buttons on the keyboard. Current position of side roller is read by the digital timer on the keyboard.
Parallel motion of the rollers insures one tosional shaft whose arms are attached to the bearing housing rolls through the brace. With the ties on the input side of the rollers the parallel side is adjusted to the upper roller as well as skewing side rollers in relation to top in the case of bending conicial sheath.
|SPECIFICATIONS AND BENDING FEATURES|
|Installed (rated) horsepower||8.2 kW|
|Electrical connection||3x400 V, 50 Hz, 32 A|
|Control voltage||24 VDC|
|Drive rollers||On all three cylinders, each cylinder separate motor, progressively turing the speed control|
|Rising and lowering the side rollers hydraulic cylinders|
|Digital readout position of the side rollers|
|Turning down beds of the upper roller hydraulic cylinder|
|Speed of the passage plate (continuous regulation)||1 – 7 m / min|
|Diameter of the side rollers||175 mm|
|Diameter of upper roller||185 mm|
|Working length of rollers||1600 mm|
|Machine dimensions (LxWxH)||3200 x 1000 x 1100|
|Weight (wthout the upper side and a reciving device)|
|The possibility of bending metal sheet for diameter ≥ 1000 mm|
|Maximum width of a sheet||1600 mm|
|Maximum thickness without pre-bending||12 mm|
|Maximum thickness with pre-bending||10 mm|
|The possibility of bending metal sheet for diameter ≥ 500 mm|
|Maximum width of a sheet||1600 mm|
|Maximum thickness without pre-bending||10 mm|
|Maximum thickness with pre-bending||8 mm|
|Maximum thickness of bending diameter of ≥ 1000 mm|
|Maximum width of a sheet||300 mm|
|Maximum thickness without pre-bending||20 mm|
|Maximum thickness with pre-bending||16 mm|
|Maximum bending thickness „t“, depending on the width of the sheet „b“ in mm can be calculated using the formula||t|
Some of the obtained values are shown in the table below
All the above stated figures are for bending to the limits of plasticity 240 N/mm² (Eg. S 235 JR)