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Magnetic attraction of Roemheld die clamping

Magnetic attraction of Roemheld die clamping
M-TECS 130 installed on a Jackel Press

M-TECS magnetic clamping technology from Roemheld allows dies, even very heavy ones, to be changed within just a few minutes and at temperatures up to a maximum of 240°C. Furthermore, by using this technology in conjunction with a rapid changing system consisting of changing station, roller bars, couplings, pre-heating station and die changing carts adapted to the machine, even dies weighing several tons can be changed and clamped in about 30 minutes without wasting energy.

M-TECS magnetic clamping plates enable end users, whether they are processing elastomers, polyurethane, thermoplastics, rubber or producing fibre-reinforced components to avoid costly, time-consuming and labour-intensive changeover processes. Another advantage of using M-TECS is that all die sizes and shapes, even those which are not standardised, can be quickly positioned and clamped. It is therefore no longer necessary to undergo costly standardising of die sizes and clamping edge heights. This enhances a machine’s productivity, especially when manufacturers need to deal with reduced batch sizes, increased product variety and shorter lead times or - as in the case of rubber processing - with small series, including various product versions, which have to be produced and supplied in a short time.

An additional plus of Roemheld’s M-TECS magnetic clamping solutions is the quality improvements it brings to production. The pressing forces and heating are uniformly distributed across the die, which results in very homogeneous rubber and plastic products. Scrap is therefore significantly reduced. Thanks to the uniform distribution of force and the high precision of the clamping process, the wear to dies is significantly reduced. Users appreciate almost distortion-free and precise clamping which contributes to low wear to dies and high process reliability.

The application of rapid clamping technology increases also safety at work. As manual clamping and unclamping are no longer necessary, the risk of injuries is reduced. Furthermore, there is no need to intervene manually at areas which are hard to reach. Magnetic clamping technology uses the principle of electric permanent magnets. Clamping forces of up to 3000 kN and even greater can be generated, independent of whether clamping is made horizontally or vertically. Electrical energy realigns the magnetic poles for about two seconds. During production, power-independent permanent magnets ensure the dies are retained. Only when it is time to unclamp the dies is power again applied. This makes the system safe, even in the case of power failure, as experts from TUEV certified in 2006.

Magnetic clamping technology available in three versions

Roemheld offers three versions of magnetic clamping systems to suit different requirements. For high processing temperatures of up to 240°C in the rubber and duroplast processing and die casting industries, and for producing O-rings and rubber flashings, the M-TECS 210 magnetic clamping elements are the best choice. M-TECS 130 is a magnetic clamping system for processing thermoplastics in the manufacture of large workpieces, on sample machines and in small series and is designed for temperatures of up to 130°C. The company also offers the "Clamp & Go" product line, which is designed especially for organisations which are changing to magnetic clamping technology. These clamping systems consist of low-cost, standardised magnetic clamping systems, which can be easily retrofitted to existing injection moulding machines. "Clamp & Go" clamping elements are designed for temperatures of up to 130 °C.

To find out more about Roemheld’s range of workholding solutions, visit www.roemheld.co.uk or telephone 01462 459052.