LORENZ
Single Decoilers

Type Load capacity Belt width Number of spreading segments Inner diameter Outer diameter
  KN max. mm pieces min. mm mm
H 300 3 220 4 300 – 500 1000
H 1000 10 600 3 280 – 330 1000 / 1200 / 1500
H 2000 20 800 3 370 – 420 1200 / 1500 / 1800
H 3000 30 1000 3 380 – 420 1500 / 1800 / 2000
H 5000 50 1000 3 470 – 520 1500 / 1800 / 2000
H 8000 80 1000 3 470 – 520 1500 / 1800 / 2000
H 10000 100 1500 3 470 – 520 1500 / 1800 / 2000
H 12000 120 1500 3 470 – 520 1500 / 1800 / 2000
H 15000 150 2000 3 470 – 520 1500 / 1800 / 2000
H 20000 200 2000 3 480 – 520, 460 – 640 1500 / 1800 / 2000
H 25000 250 2000 3 480 – 520, 460 – 640 1500 / 1800 / 2000
H 30000 300 2000 3 480 – 640 1500 / 1800 / 2000

Reel spreading

Manual spreading

Manual spreading is performed using a hand crank that acts via a joint lever.

Hydraulic spreading

The spreading is done hydraulically using sliding wedges, supported by a pressure accumulator and a switchable automatic tensioning device. This design allows for reduced spreading force while increasing stability thanks to a large contact surface.


Brake

Pneumatic brake

The reel is braked pneumatically using powerful, double-bearing disk brakes. The friction pads are articulated to ensure that they are applied over a large area and to prevent them from running off at an angle.

The large brake disk diameter and the arrangement of the brake disk outside the reel head offer several advantages:

- low braking force
- Low heating of the brake
- easy accessibility

The continuous brake is adjusted via a pressure control valve

Regenerative brake

The drive via a high-quality three-phase geared motor with digital control is used for feeding into the straightener as well as for rewinding and braking the strap.
The transmission from the motor to the coiler shaft takes place via a spur gear. A brake attached directly to the drive motor is used to safely stop the drive when the control voltage is switched off.
The retraction force of the reel is entered in the control panel, stored and controlled by a laser depending on the diameter.
This keeps the retraction force of the straightener virtually constant.


Drive

Drive

A three-phase geared motor is used as the drive for unwinding the belt and as an auxiliary drive for feeding in the belt. The drive is controlled via a frequency converter.
A brake attached directly to the drive motor is used to safely stop the drive when the control voltage is switched off.


Manual coil guide

Protective ring

The protective ring is designed as a closed ring made of tubular steel and is connected to the pivot bearing by sturdily dimensioned struts.

Rear push-on arms

3 slip-on arms prevent the coil winding from falling sideways.
The push-on arms have a quick clamping mechanism.

Counterholder

A counterholder, which is attached after the coil has been placed on, prevents the coil winding from falling down sideways.
It is designed as a closed ring and equipped with a quick-release clamp.

Front clip-on arms

3 push-on arms, which are attached after the coil has been placed, prevent the coil from falling sideways.
The push-on arms have a quick clamp.


Coil guide motorized

Start-up and back-up rollers

Three fixed conical rollers serve as the rear coil system instead of the traveling protective ring. The counter-holder rollers are swiveled in hydraulically and moved to the coil width by motor.
This arrangement makes it possible to drive narrow and thick strips safely into the straightener with the help of the pressure roller.
The minimum strip width without backing rollers is 80 mm, with backing rollers the minimum strip width is 20 mm.


Lateral displacement

Belt center adjustment via spindle

The belt center is adjusted manually via the spindle by moving the reel.
The protective ring serves as a contact surface. When loading, ensure that the coil is always in contact with the protective ring. The belt width can be read off a scale on the base frame.

Motorized strip centering

The strip center is adjusted by a motor with an absolute encoder via a spindle by moving the reel.
The protective ring serves as a contact surface. During loading, it is important to ensure that the coil always rests against the protective ring.
The strip width can be read digitally on the operator display and stored in the tool data memory.


Pressure arm

Strip pressing device without drive

The pneumatically operated strip pressure device prevents the strip from springing open when the bandages are opened, thereby eliminating the associated hazard.
The arm width is approx. 40 mm. This results in a minimum strip width of 40 mm that can be threaded with the pressure arm.
The pressure arm is mounted in a robust console that is attached to the reel housing.
The pneumatic cylinder is equipped with seat valves that reliably maintain the pressure in the cylinder in the event of a hose rupture.

Strip pressing device with drive

The hydraulically operated strip pressure device prevents the coil from springing open when the bandages are opened, thereby eliminating associated hazards. Both the speed and the contact pressure can be individually adjusted.
During rewinding, the pressure roller acts as a brake, while during winding, tension is applied to the material. The driven pressure roller also serves to advance the start of the strip and to rewind it.
The arm width is min. 80 mm. In conjunction with the start-up and counter-holder rollers, the arm width is approx. 160 mm.
This results in a minimum strip width of 80 mm for the standard coil guide and 20 mm for the start-up and counter-holder rollers, which can be threaded with the pressure arm.
The pressure arm is mounted in a robust bracket that is attached to the reel housing.
The seat valve mounted directly in the hydraulic cylinder provides additional safety. This reliably maintains the pressure in the cylinder, even in the event of a hose rupture.


Coil loading chair

Fixed coil loading chair and cross travel device

The coil loading chair is located outside the coil run, is hydraulically height-adjustable up to the smallest coil outer diameter and is permanently installed in the floor. The coils placed on it can be easily picked up from the decoiler.
For safety reasons, large coil weights cannot normally be loaded without a coil loading chair.
The coiler is equipped with a cross travel device. It is used to automatically align the coil in the center of the straightener infeed and to pick it up from the fixed coil loading chair. It is driven by a three-phase geared motor.

Mobile coil loading chair

The coil loading chair is located outside the coil run, is hydraulically height-adjustable up to the smallest coil outer diameter and is mounted on a traversing device. The coils placed on it can be easily transported to the decoiler.
For safety reasons, large coil weights cannot normally be loaded without a coil loading chair


Scissor lift table

Fixed scissor lift table and cross-travel device

The scissor lift table is located outside the working area, is hydraulically height-adjustable to the smallest outer coil diameter, and is firmly mounted on the floor.
For safety reasons, large coil weights cannot normally be loaded without a coil loading chair, as the lifting gear does not fit into the recess of the reel spreader.

Mobile scissor lift table

The scissor lift table is motorized, hydraulically height-adjustable, and mounted on a travel device. This allows the coil to be loaded outside the working area and then easily transported to the reel.
For safety reasons, large coils cannot normally be loaded without a coil loading chair, as the lifting gear does not fit into the recess of the reel spreader.


Expansion of spreading area

Top jaws

The clamping range can be extended using top jaws.


Base frame

Base frame

The straightening machine and reel are mounted on a common base frame. This eliminates the need for additional floor mounting, as the pulling force of the straightening machine is absorbed and transmitted within the base frame.
The base frame is positioned on the floor using height-adjustable feet. This allows the machine to be aligned precisely with little effort.


Examples

Single decoiler