LIDECO Standard Parts 07/2022

F311 GAS SPRINGS DS FOR DIE SEPARATION Gas spring fully extended Tool closed Diagrams 2 Tool open Gas spring fully extended Tool closed Tool spacing with "conventi- onal" standard gas springs Diagrams 1 Tool open Function: When conventional standard gas springs are used to distance the upper and lower parts of the die, additional initial forces are exerted on each stroke carried out. This force can increase further at the end of the stroke (see diagram 1). When using the "new" DS gas springs in the same application, the force is reduced to less than 10% for each stroke (diagram 2). The return stroke speed of the gas springs DS is very slow. The duration of the complete return stroke is 1-2 minutes. However, this slow speed has no negative influence on the end position (gas springs fully extended). The piston rod is actuated oscillating up to 10% of the total stroke depending on the production rate. Description In line of reducing the set-up time while installing the tool in the press there are used autonomous acted gas springs for tool spacing. While using conventional gas springs they are activated with every press stroke about the whole stroke length. The new FIBRO gas spring, DS (Die Separation) have been developed especially for tool spacing. Because of the slow return stroke speed, the gas spring DS does not need the total stroke length. The FIBRO gas spring, DS minimises unwanted friction in the tool, press and in the gas spring itself. A further benefit is that they use up to 80% less energy than "conventi- onal" standard gas springs. Properties: ▬ Initial spring forces of 3000 daN to 7500 daN ▬ Stroke lengths of 50 mm to 300 mm ▬ Standardised dimensions in accordance with ISO, VDI, CNOMO ▬ Very slow return stroke speed 0.2 m/min ▬ Standard safety features (FIBRO Safer Choice) - Safety piston rod - Excess pressure protection - Overtravel protection ▬ High flexibility during fixing from the top mounting notch and lower fixing groove, together with the tapped bores in the spring base Tool spacing with gas springs DS