Straightener QRVPE

The straightener is additional equipment used in press manufacture. It is used for straightening a metal belt decoiled of a decoiler. In a production line, it is placed between a decoiler and a feeder.

Mechanical realization

The straightener QRVPE consists of a straightening mechanism, mounted on a frame, welded from metal sections and plates.

A frame of the straightening mechanism is made of two stand-alone side-plates, firmly connected to each other by four screws. In the side-plates, four bottom straightening, bottom input and output rolls are placed, mounted in self-aligning bearings. Input and output upper rolls are connected with guideways in the side-places; therefore opening of input or output rolls can be set. Compressive force of this rolls is generated by springs and can also be adjusted.

Relative height of upper straightening rolls can be set individually by rotating ball screws, placed in bronse bushes. Each pair of the corresponding ball screws is connected by chain for simultaneous rotating.

The rolls are powered by a electromotor. This rotational movement is transfered to the rolls by a belt pulley and gearwheels.

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 hardened vertical rolls, whose position is adjustable according to belt width.

Straightener control

Rotating movement of the straightener is ensured by electromotor with frequency inverter, which performs smooth acceleration and deceleration ramps, thus continuous making of a reserve loop. Size of the reserve loop is controlled wirelessly by analogue distance sensor. On the sensor’s frame, there is also mounted a limit switch for stopping the following machine after the straightener in case of failure and no reserve loop.

Additional equipment

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

  • Pneumatic control of input/output rolls
  • Side-straightening of metal belt
  • Portable control panel for comfortable belt loading in feeders rolls or machine tool of forming press


Feel free to contact us for getting additional information.

Technical parameters

QRVPE 160/6
Max. belt width [mm] 160
Max. belt thickness [mm] 6
Max. feed velocity [m/min] 5-40
Rolls diameter [mm] 80
Max. power requirement [kW] 3,2
Length [mm] 986
Width [mm] 710
Height [mm] 1320
Weight [kg] 530


Straightener QRVPE 160/6