SandSun VA08 Скачать руководство пользователя страница 3

OVERLOAD

 

  PROTECTOR 

 

1. Introduction: 

   

   

    Overload protector is installed on press in order to check the overload hydraulic 

pressure  of  cylinder  inside  the  slide.  The  hydraulic  pressure  of  cylinder  will  be 

released  immediately  within  3/1000  seconds  when  overload  occurs.  And  press  will 

stop  working  urgently  as  soon  as  receiving  the  signal  from  limit  switch,  in  order  to 

protect the die and press. 

After overload occurred, will quickly compensate oil of cylinder to reach normal 

working pressure by air driven hydraulic pump, in order to operate the press normally. 

Furthermore,  overload  protector  to  have  pressure  control  valve,  which  can  prevent 

effects of excessive rising of hydraulic pressure caused by raised temperature when 

press is operating. 

 

2. Selection of Model: V A 0 8

 

-

 

1  

2  

3    

(

Suitable for press

 200 tons

 

& down

 

 
 

Setting range of 

overload hydraulic 

pressure

 (Kgf/cm

2

Type of limit switch 

Volume of oil tank 

(Liter) 

5:x 50 times   
7:x 70 times   
9:x 90 times

 

 

2 : NO type 
6 : NC type 

0:  None   
1:  1.2 
3:  4.0 
5:  8.0

 

 

3. 

Specification

 

 

 

2005.07.08

                                                                                     

SANDSUN

 

 

       

 

                         

1

 

Model

 

VA08-5□0 

VA08-7□0 

VA08-9□0 

Releasing flow rate 

cm

3

/sec 

15500 

13000 

11500 

Area of orifice 

cm

2

 

0.7 

0.5 

0.4 

Method of setting pressure 

 

Air pressure 

  x 50 times 

Air pressure 

  x 70 times 

Air pressure 

x 90 times 

Range of setting pressure 

kgf/cm

2

 

150 

~

 250 

210 

~

 350 

270 

~

 450 

Air supply 

kgf/cm

2

 

~

 5 

Capacity of press 

 

200 ton 

  & down

 

Air consumption 

N

l

/min

 

220 

Maxi. noise 

dB 

77 

Discharging pressure of pump 

kgf/cm

2

 

Air pressure x 22 times 

Hydraulic oil 

 

ISO-VG-32 or equivalent 

Содержание VA08

Страница 1: ...L VA08 Air Pressure Type SANDSUN PRECISION MACHINERY CO LTD T e l 8 8 6 4 8 5 3 6 6 8 8 F a x 8 8 6 4 8 5 3 6 6 9 9 http www sandsun com tw E mail sandsun ms26 hinet net 57 7 NO 7 LANE 57 SEC 3 CHUNG...

Страница 2: ...1 4 BASIS OF SELECTION 2 5 ATTENTION POINTS FOR PIPING 2 6 CAUTION IN USE 3 7 METHOD OF AIR DRAIN 3 8 WORKING PRINCIPLE 4 9 SETTING METHOD OF LIMIT SWITCH 5 10 TROUBLESHOOTING 6 11 PUMP ASSEMBLY DIAGR...

Страница 3: ...ssive rising of hydraulic pressure caused by raised temperature when press is operating 2 Selection of Model V A 0 8 1 2 3 Suitable for press 200 tons down Setting range of overload hydraulic pressure...

Страница 4: ...according to releasing flow rate of cylinder inside slide Q Releasing flow rate of overload protector which you choose has to be more than of cylinder inside slide when overload occurs Please consider...

Страница 5: ...king 7 1 3 Wait for around 20 seconds in order to exhaust air completely 7 1 4 Turn the air drain bolt clockwise to fasten it and then pump stops working hydraulic pressure is raising 7 1 5 If the pum...

Страница 6: ...ly and the air solenoid valve which is used by overload protector will be OFF cut off the power supply 8 3 After overload protector was released or hydraulic pressure isn t enough After overload occur...

Страница 7: ...thickness gauge of 0 8 1 0 mm each between adjustable screw and head of limit switch to adjust limit switch After adjustable screw please fasten the nut and then insert the thickness gauge to re confi...

Страница 8: ...ught Check if any damage happens from the inlet base 24 and inlet valve 20 3 Without enough oil in the oil tank Refill hydraulic oil and let the air drain 4 Pilot valve 29 caught Check if any damage h...

Страница 9: ...g Filter Exchange valve Check ring Silencer plate Buffer pad SANDSUN 1 1 1 1 1 1 1 1 Spring 39 41 42 40 Bolt Cover Silencer 37 38 35 36 M6x90 61 2800 61 2400 61 2500 R 45 61 2600 61 2700 61 5700 Inlet...

Страница 10: ...0 AS 46 AS 24 61 1400 TM14x30 AT11 1 I NO Specification M5x12 M6 M4x25 M4x4 1 2 1 1 1 1 1 1 1 Qt y 1 2 1 61 0510 61 0401 61 0305 61 0309 61 0307 BP 12 5 61 0200 TP 12 5 61 1501 61 0100 Specification B...

Страница 11: ...ing P 16 19 O Ring P 16 Cylinder Port 27 3 11 52 O Ring P 24 60 70 Limit Switch 82 277 PT1 2 Overload Cylinder Port 74 Air Drain Bolt 13 70 33 PT1 4 Air Supply Port D C A B D C E 16 d 2005 07 08 SANDS...

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