正力机械 __________________________

　　The plastic press forming is divided into thermo setting plastics forming and thermo plastics forming.Thermo setting material as phenolic plastics is mainly used in electrical industry.Thermo-plastics material as polytetrafluoroethylene plastics is mainly used in commodity industry.Now the upgrade SMC or LPSMC are belong to plastics.
　　The press forming action of plastics products hydraulic press nornally is:slide rapid travel,repid press forming (sometimes air exhaust is needed), pattern darwing return after perssure released,demolder and push out return.The press normally is:slide repid travel,repid press forming (sometimes air exhaust id needed),pattern drawing return after pressure released,demolder and push out return.The press power consists of high and low pressure pumps.When rapid prepress foming,both high and low pressure pumps operate together,after the pressure reaches a certain value or pressed to a certain set position,the low pressure pump releases pressure,only high pressure pump operates.This causes low spees press forming,it is helpful for material flow and air exhaust from the pattern chamber.
　　As the plastics has a big adhesive force,the 71 series press has a very big pattern drawing force(original return stroke force).The return stroke force is very small after pattern drawing.
　　At the beginning of plastice press manufacturing,the down reavel of the slide is realized through low and high pressure pumps supplying oil.Now rapid down reavel is realized by self weight down reavel filling fluid and oil.This reduces the powe consumption needed duding low speed reavel.What ismore,the oilfilling device eists,this can increase the reutrn speed.The plastice press reduces its speed when it is with full load,so it is not economic to use the plastice pres in bending and strech of iron plate parts.

□ Main Technical Parameters

Type Unit 63T 100T 160T 200T 315T 400T 500T

Nominal force KN 630 1000 1600 2000 3150 4000 5000

Reture force KN 35 320 800 900 25 630 1000

Knock out force KN 100 190 400 400 500 500 800

Reture force KN 50 100 200 250 250 250 250

The maximun working pressure of the fluid MPa 25 26 26 25 25 25 28

The stroke of the slipper mm 450 500 600 700 800 800 900

Liftout Stroke mm 160 200 220 250 300 300 300

The maximun distance between the under surface of the slipper and the surface of the working platform mm 710 800 900 1100 1200 1400 1300

Down speed of slide Rapid mm/s ≥80 ≥100 ≥120 ≥120 ≥150 ≥150 ≥150

Slow mm/s 10 10 15 8 10 10 8

Pressing mm/s 5-1 5-1 5-1 4-1 10-2 10-2 10-2

Retum speed of slide Slow mm/s 8 8 15 8 40-8 40-8 50-8

Rapid mm/s 60 71 100 100 100 100 100

Speed of knock out cylinder Slow mm/s 10-5 5 10 10-5 35-10 35-10 35-10

Rapid mm/s ≥50 ≥70 ≥70 ≥70 ≥67 ≥67 ≥67

Reture mm/s ≥100 ≥140 ≥140 ≥140 ≥130 ≥130 ≥130

Dimensions of table Left,Right mm 500 710 900 900 1200 1200 1400

Front,Rear mm 500 580 900 900 1200 1200 1400

Height of table above floor mm 650 760 550 550 650 650 800

Total Power KW 5.5 7.5 11 15 18 22 37

Weight of the main machine T 2.5 4.5 11 12 18 20 30

Overall dimensions of machine Left,Right mm 1900 2650 3080 3080 3440 3440 4100

Front,Rear mm 1000 1200 1350 1350 1520 1520 2420

Height above floor mm 2854 3000 3820 3820 3690 3690 5400

Depth below floor mm 1300 1300 1300 1300 1500