WCA January 2012

Technology news

encoder that allows wire and cable products

product. For European manufacturers, the LaserSpeed encoder is available as a MID-certified system to meet all the Measuring Instrument Directive requirements. Setting the pace for accurate length, speed, and sequential printing The advantages of non-contact length and speed measurement systems, such as the LaserSpeed gauge, have been proven on all types of wire and cable production processes including sequential printing applications. This non-contact, laser-based tech- nology eliminates those measurement errors associated with contact wheel tachometers as a result of slippage and mechanical wear. Manufacturers that employ laser- based, non-contact measurement technology in their sequential printing operations will be on the road to increased productivity, improved product quality and real bottom-line savings.

▲ ▲ LaserSpeed uses non-contact laser technology to measure product length and speed with ±0.05% accuracy

Beta LaserMike – USA Fax : +1 937 233 7284

LaserSpeed encoder at various locations on the line. The most common place is adjacent to the printing system just after the jacket is extruded onto the wire or cable. Since the jacket is still soft and hot after the extrusion, the LaserSpeed non-contact system provides the ideal measurement method over contact mechanical encoders. Many manufacturers have installed the LaserSpeed encoder before the capstan station or take-up reel. Situating the LaserSpeed encoder alongside the printing system where the marking occurs, helps to better track the actual length and speed. To control the sequential printing operation, the LaserSpeed encoder outputs an index pulse directly to the printing system. Some applications may just need the encoder pulses via a quadrature output. Pulses can also be sent to a PLC system. LaserSpeed enables manufacturers to set the desired pulse rate (ex. pulses every number of feet, metres, etc.) to meet their unique sequential printing requirements. This enables the manufacturer to control the exact spacing between print marks with ±0.05% accuracy. Under controlled conditions, it is possible for LaserSpeed to approach ±0.02% accuracy. This level of accuracy also ensures the manufacture does not over-ship or short the customer of

product means the plant can generate a substantial quantity of material scrap or waste. This can cost manufacturers a significant amount of money in unnecessary expense. As such, length accuracy is of paramount importance. Non-contact approach eliminates measurement errors Non-contact length and speed measurement systems avoid the measurement pitfalls encountered by mechanical contact systems. For example, the LaserSpeed encoder uses a unique, laser-based measurement technique that does not make contact with the wire or cable. It is permanently calibrated and has no moving parts to wear out. The system projects a unique fringe pattern on the surface of the wire or cable. As the product moves, this movement creates a Doppler signal scattered back to the LaserSpeed system. This Doppler information is translated into product speed and pulses are produced to determine the product length. The LaserSpeed encoder works on all types of products, regardless of colour, shape or texture. Length and speed measurements are captured with better than ±0.05% accuracy and ±0.02% repeatability. Ensuring marking accuracy during sequential printing operations Depending on the production require- ment, manufacturers have installed the

Email : sales@betalasermike.com Website : www.betalasermike.com

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Wire & Cable ASIA – January/February 2012