PRODUCT OVERVIEW ② GAS SPRINGS FOR PLASTIC MOLD
■ Notes on handling When gas springs are used in the following ways, serious accidents like explosion and product failure may result. Be sure to read the following before use.
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● Danger prevention • Disassembly, welding/cutting, heating and modification are prohibited. Since high–pressure gas is enclosed in this product, improper use may cause deterioration of the cylinder part and shortening of product life. • Gas re–filling and pressure adjustment are impossible. Attempt to refill, etc. may cause serious accidents like explosion. • Operating temperature (ambient temperature of mold) is 0°C – 100°C (32°F – 212°F). Use within this temperature range. Gas springs, when heated to 120°C or more, may cause serious accidents like explosion. Even serious accidents like explosion are not caused, gas seal may deteriorate due to heat, leading to gas leakage.
Disassembly, welding/cutting, heating and modification are prohibited
Gas spring surface temperature: 80°C or less Wear protective goggles and release the gas before disposal
Equivalent to back plate 40HRC
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● How to dispose • Wear protective glasses and dispose after releasing gas from inside the cylinder. Make through holes for bolt holes, and dispose after checking that nitrogen gas is completely released. ● Gas leakage prevention • Do not use gas springs in the following ways. Main trouble like gas leakage may occur. Moreover, serious accidents like explosion may occur.
Oblique or lateral load not allowed
Fixing with tip screw holes and usage where it cannot be held by joint pin mounting surface is prohibited
Fix with bolts and plates
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Usage methods considered problematic
Possible phenomena
Conclusion
a Oblique or lateral load is applied b Gas spring is not secured with bolt c There are no ejector leader pins, or not enough
Guide pins are used to prevent the occurrence of eccentric loads
Equalize the load
Cylinder grinding and piston rod cutting are prohibited
Eccentric load and/or Damage
d Load distribution towards the front, rear, left and right is not uniform inside the mold e There is obstacle inside the mold, which comes into contact with the gas spring f
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Piston rod is not pressed against the“ surface”. g The “backup plane” piston rod is deformed h Piston rod is cutting processed i Welding sputter is adhered to the piston rod j Facet and metal powder is adhered to the piston rod k Dent is adhered to the piston rod l Soaked in lubricating oil m Moisture, vapor and chemical is applied
Gas leakage
Seal damage
Be careful of welding spatter, facet, and metal powder
Do not apply excessive lubricant
Do not use/store outdoors or in high temperature/humidity
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n Gas refilling and pressure adjustment o Use at high temperature (100°C or more) or low temperature (0°C or less) p Over stroke q Cylinder is grinded r Used with piston rod suddenly opened s Usage and storage at outdoor or high–temperature & high–humidity places t Disassembly, welding/cutting, heating and modification of gas spring u Assembly into a building or vehicle v Other unexpected usages (other than for mold)
Reduced durability
Gas leakage and/or damage
Damage
Do not release the piston rod suddenly Cannot be used as ejector pin or knock-out pin
Unexpected problems
Overstroke caution
Incorporation into buildings and vehicles is prohibited
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2mm
APPLICATIONS OTHER THAN MOLDS
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Applications other than molds are prohibited
Clearance of about 2mm on one side
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