System information

Function

In production processes with moving webs, there is typically an unwinder at the machine infeed and a rewinder at the exit. During unwinding, the winding station is moved via a linear drive to feed the web in the desired position. On the other hand, during rewinding, the winding station follows the constantly changing web position via a linear drive to achieve an evenly wound reel.

Area of use

Web guiders with ELWINDER winding stations are used wherever it is not possible to use ELGUIDER or ELROLLER systems due to lack of space.

Application, unwinding

During unwinding, the sensor is mounted on the machine to define the target web position. The position should be acquired as close as possible to the final guide roller on the winding station.

Application, unwinding with synchronous roller

If, for space reasons, it is not possible to fit a guide roller to the winding station, it can be designed as a synchronous electrically coupled roller.

Application, rewinding

During rewinding, the sensor is fastened to the winding station to set the target position of the winding station for the controller. The position should be acquired as close as possible to the final guide roller on the machine. The guiding path L1 depends on the elasticity of the web. The greater the elasticity range in the transverse direction, the shorter the path L1 can be. Experience has shown that the guiding path should be the equivalent of half a web width.

Unwinding

Winding

Legend

A-A = Web tension distribution on the guiding path | K = Web correction | σ1 = Basic web tension | AB = Operating width | 1 = Linear drive | 2 = Infeed rollers | 3 = Winding station | 4 = Sensor | 5 = Locking roller | L1 = Guiding path

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Web guiding systems

Winding station system ELWINDER WSB90

Control components for winding stations with wear-free, brushless drive technology with an actuating force of 800 N

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Winding station system WSB91/93

Control components for winding stations with wear-free, brushless drive technology with an actuating force of 1,000 or 3,000 N

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Winding station system WSB96

Control components for winding stations with wear-free, brushless drive technology with an actuating force of 5500 N

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System components

Color line sensor FE 52

Digital color matrix sensor for detection of color lines and color contrasts

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Blue light wide band sensor PoE FR 65

Blue light transmitted light sensor with large measuring range of 160 / 320 and 480 mm

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Ultrasonic edge sensor PoE FX 42

Ultrasonic edge sensor with digital evaluation, field of view of ±3 mm, and fork widths of 30, 60, and 124 mm

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Infrared wide band sensor FE 45

Digital infrared wide band sensor for web center detection, web edge detection, and width measurement with a tube distance (clear width) of 80 mm

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Ultrasonic edge sensor PoE FX 52

Ultrasonic edge sensor with digital evaluation, field of view of ±10 mm, and fork widths of 30, 60, and 124 mm

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Infrared edge sensor PoE FR 54

Infrared edge sensor based on the principle of retroreflection with a measuring range of ±10 mm and a resolution of 0.02 mm

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Infrared wide band sensor PoE FR 61

Infrared wide band sensor with large measuring range of 160 mm, 320 mm or 480 mm

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Infrared wide band sensor FE 46

Digital infrared wide band sensor for web center detection, web edge detection, and width measurement with a tube distance (clear width) of 160 mm

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CCD camera OL 82

Interruption-free detection of web edges, position detection, web guiding, material detection, and width measurement

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Data network center DN 40

Data network center for central connection of all components in a control system

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Command station DO 42

Visualization and operation of web guiding systems with multiple operation of up to 255 web guiding control loops

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Command station with data network center DO 32

Command station for simple web guiding systems without motorized sensor adjustment

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Support beam VS 80

Motorized linear sensor positioning for ultrasonic, infrared, and color line sensors

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Actuating drive AG 90

Linear actuating drive with wear-free, brushless drive technology with a maximum actuating force of 800 N

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Linear drive unit EL.MOTION AG 91

Linear actuating drive with wear-free, brushless drive technology with a maximum actuating force of 1000 N

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Linear drive unit EL.MOTION AG 93

Linear actuating drive with wear-free, brushless drive technology with a maximum actuating force of 3000 N

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Actuating drive STO AG 9__2

Linear actuating drive with wear-free, brushless drive technology for functional safety

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Linear drive unit EL.MOTION AG 96

Linear actuating drive with wear-free, brushless drive technology with a maximum actuating force of 5500 N

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Linear drive unit EL.MOTION AG 72

Linear drive unit EL.MOTION AG 72

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