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Manroland’s Colorman offset print press has an automatic plate-loading (APL) system that features reliable safety sensor systems from Leuze Electronic.

Manroland is a large printing systems manufacturer and employs almost 8,000 people.

Its Colorman offset print press is able to provide flexible colour handling and cope with dynamic production changes.

The Colorman’s APL is a robotic system for automatic loading of the printing cylinders with printing plates.

The large dimensions and weight of the cylinders plus the high speeds involved in the changeover of the printing plate meant that Manroland needed to ensure the safety of press operators.

For this, it selected safety light curtains from Leuze Electronic’s Solid range.

These long-lasting sensors are suitable for machines that demand high system availability such as those in the print industry.

The Colorman uses the self-testing Solid-2E safety light curtains of type 2, (IEC/EN 61496), and SIL 2, (IEC 61508 and IEC/EN 62061).

The curtains have a slim aluminium housing, measuring 30mm x 34mm, which the company was able to easily fit in the press enclosure.

The Solid-2E safety light curtains feature high interference rejection, which prevents even the frequent over-spray of ink near the printing cylinder affecting its reliability.

After the operator has arranged the new plates and removed the used plates, he leaves the area near the printing cylinder and initiates the loader from a control panel alongside the machine’s front.

From this point onwards the safety light curtains ensure that operators cannot approach the moving automatic plate loader as it swivels an arm towards the new plates and uses suction to pick up the pre-programmed number of plates.

It then immediately swivels back to the cylinder and deposits the plates there.

As the swivel arm returns to its resting position, the cylinders begin to turn and the printing process begins.

With the APL module, even existing Colorman systems can be retrofitted.

Leuze Electronic

Leuze electronic the ‘sensor people’ are committed to being the supplier of choice by providing the best customer service and products.

Leuze electronic the ‘sensor people’ are committed to being the supplier of choice by providing the best customer service and products.

DETECTIONOptical Sensors: An innovative range from economic standard sensors to feature-rich special solutions.

Barcode, 2D and RFID code readers; Smart cameras and Vision systems; Optical data transmission; Optical positioning.

PROTECTION – Machine safety light curtains and barriers; Safety laser scanners; Door and entry interlocks and switches.
Leuze electronic also offer a machine Safety Inspection Service to ensure the correct guarding of machines using any brand of safety light curtains & barriers.

Virtual online catalogues, industry specific brochures, and extensive guidance on machine safety are all available on our website.
Please call and talk to ‘the sensor people’ for technical information, samples and advice.

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