Feeding straightener QPRM

The feeding straightener is additional equipment used in press manufacture. It combines advantages of two stand-alone machines – a straightener of metal belt and a roll feeder. The feeding straightener performs straightening of metal belt decoiled of decoiler and accurate feeding this belt to a machine tool. It helps to shorten the overall length of a production line, which brings place and costs savings.

Mechanical realization

Mechanical realization is much the same as for straightener QRME. It consists of a chassis welded from metal sections and plates, a straightening mechanism and electro-enclosure with control panel.

The chassis height can be adjusted by rotating a screw, firmly connected to a chainsaw wheel, which transfer the movement to three other screws placed at the bottom corners of the chassis. At the top of the chassis, there is the straightening mechanism. Inside this, input, output and straightening rolls are placed. Opening and closing of input / output rolls is provided by hand levers.

A number of straightening rolls is 7. Four of them are placed in side-plates of the machine. One of them is propelled by motor via belt pulley. This rotational movement is then transfered to the other rolls by gear wheels. Three upper straightening rolls are also placed in the side-plates, but they are height adjustable, whicht is performed by rotating a ball screw. Their actual relative height is indicated on a scale.

As standard, we attach input roll for shoring of metal belt before it enters the straightener. It can be used as bottom or upper roll, in accordance to how the metal belt is decoiled of a decoiler. Side belt alignment is done by two vertical hardened rolls, whose position is adjustable according to belt width.

Feeding straightener control

Main rotating movement is made by servomotor with gear manufactured by LENZE. PLC motion controller controls this motor. Accurate length feedback is ensured by small wheel pulled on the feeded belt by a spring. Feed parameters are displayed and can be set via touch display located on the front panel.

List of basic parameters, which are possible to set via display:

Parameter Possible range Unit
Feed length 0,1 – 9999,9 mm
Feed velocity 1 – 99 %
Number of feeds 1 – 99999 ks
Number of feeds(2nd counter) 1 – 99999 ks
Press stroke launching modes Single stroke, Continuous
Starting and ending feed angle 0 – 359, 0 – 359 °
Starting and ending freeing angle
0 – 359, 0 – 359 °
Digital cam (relay contact) 0 – 359, 0 – 359 °
Feed accuracy testing 0 – 359 °

Additional equipment

In the case of customer interest, we offer following additional equipment to the feeding straightener:

  • Pneumatic control of input/output rolls
  • Additional checks according to customer needs
  • Additional electronic cams for co-operating machines in automation line
  • Side-straightening of metal belt
  • Check for belt ripple between the feeding straightener and a machine tool (useful when narrow or thin metal belt is feeded)
  • Portable control panel for comfortable belt loading in forming press working area
  • Multiple feeding of different lengths in a row, “receipts” for manufactured parts


We also offer non-standard equipment (additional sensors, special-shape forming rolls, etc.). Our products are tailor-made solutions, effectively integrated into production and forming process.

Feel free to contact us for getting additional information.

Technical parameters

QPRM 300/4 QPRM 600/2
Max. belt width [mm] 300 600
Max. belt thickness [mm] 4 2
Max. feed length [mm] 1,0 – 9999,9 1,0 – 9999,9
Max. feed velocity [m/min] 45 35
Feed accuracy [mm] 0,1 0,1
Rolls diameter [mm] 60 60
Feed height adjustment [mm] +/ 50 +/ 50
Max. power requirement [kW] 3,2 3,6
Length [mm] 800 1 100
Width [mm] 560 1 000
Height [mm] 1 230 1 380
Weight [kg] 630 766



Automation line with QPRM 300/4
Automation line with QPRM 300/4
Automation line with QPRM 600/2
Stamping line with QPRM 300/4
Automation line with QPRM 300/4