LIDECO Standard Parts 07/2022

L45 MOULD LINE gas springs Gas springs MOULD LINE are an ideal supplement to and expansion of the traditional FIBRO product lines of helical, disc and elastomer springs for manufacturing tools, devices, moulds and machines. Gas springs can be used for all applications where lift movements are required in parallel to mould opening. Gas springs MOULD LINE, which were specially developed for mould making, are characterised by their high force, small size, long service life and a constant operating temperature of 120°C. Of course, gas springs MOULD LINE are approved as per European Pressure Equipment Directive 2014/68/EU (14th GSGV ordinance on pressure vessels). Gas springs MOULD LINE are filled with nitrogen and do not require any pressure space that is positioned externally or in tool plates. They also require no gas supply lines. In certain special cases, however, monitoring of charge pressure in the installed state is required. These may be found in the list of accessory products if needed. As long as all mounting details are laid out with due circumspection, it is no problem at all to remove and install gas springs MOULD LINE. Operating instructions are included with every delivery of gas springs MOULD LINE. Application examples are shown on the following pages. Functioning The pressure medium is a commercially available, environment-friendly nitrogen. MOULD LINE gas springs have a standard charge pressure of max. 150 bar. Pressure build-up In operation the piston rod enters the spring space whose volume is progressively reduced. With an increasing stroke length, the volume of the pressure chamber is reduced. The resulting increase in pressure can be read from the diagram of the spring size as a factor. The final force is therefore the initial spring force x pressure build-up factor. Operating temp. The spring temperature should not exceed +120 °C.. Charge pressure Modification of charge pressure allows variation of the force rating and can be predetermined from the spring diagram. Installation recommendations MOULD LINE gas springs can be used in any installation position. Whether or not external forces act on them when at rest is of no consequence.and can therefore be calculated easily. All FIBRO Gas springs meet the requirements of the Pressure Equipment Directive 2014/68/EU. The Pressure Equipment Directive (2014/68/EU) was ratified by the European parliament and the Council of Europe in May 1997. The requirements of the pressure equipment directive came into force throughout the EC on 29 May 2002. The directive defines pressure equipment as vessels, pipework, safety devices and pressure accessories. In terms of the directive a vessel is a casing which is designed and manufactured to contain fluids under pressure. It follows from this definition that nitrogen gas springs of all sizes are deemed to be pressure vessels and must in this respect comply with the pressure equipment directive (2014/68/EU) from 29 May 2002. MOULD LINE GAS SPRING - DESCRIPTION