Asco joucomatic 450 Serie Manual De Instrucciones página 4

PES CYLINDER + STATIC ROD-LOCKING DEVICE
MOUNTING AND OPERATING RECOMMENDATIONS
Precautions should be taken when installing a cylinder fitted with a static rod-locking device. It is important to clearly define the type of layout that is required
and the operating conditions of the cylinder.
The cylinder must be locked only in case of need at the end of a cycle in a situation such as:
- failure in electric supply;
- failure in pneumatic supply;
- drop in pressure.
The cylinder may be fitted horizontally or vertically, with the rod either upward or downward. It may also be tilted, with the rod either upward or downward.
A specific layout corresponds to each application. The specimen layouts on the opposite page show the principles to be observed and the stops caused
by interruption of the power supply or removal of the pressure by means of electropneumatic valves.
In the case of a vertical movement of the load, the force on the piston which is generated by pressure - and which operates in the same direction as the
load - must not exceed the locking capacity of the device when it is combined to the force of the load (see page 4).
After any emergency locking operation, make sure that the chambers of the cylinder are filled before the signal to unlock the device is given. Risk of damage
to equipment in case of emergency shutdown (blocking of rod in motion)! The system (rod-locking device, cylinder, cylinder rod) must therefore be checked
prior to putting it back into operation.
It is recommended to check the correct operation of the rod-locking devices once a month:
- rod-lock system - manual lock-up override mechanism
- position detection system - pilot valve function
MOUNTING OPTIONS
The cylinder is controlled by a 5/3 valve (ISO size 1 for diameters 32, 40 and 50 mm, ISO size 2 for diameters 63, 80 and 100 mm), with centre
open to exhaust (type W3 - fig.1), and supplied by exhaust ports 3 and 5.
NOTE: 1) The static rod lock must be activated by a 3/2 NC solenoid valve to ensure fast braking of the cylinder rod (the option of a rod lock
with integrated pilot control allows you to reduce the response time).
2) It is recommended to use a pressure regulator to compensate for the cylinder's "rod effect".
3) One-directional flow reducers must be used to control the rate of speed of the rod.
Safety precautions when using the manual lock-up override:
In case of air pressure or power failure, the rod-locking device stops and holds the cylinder rod in place. The two cylinder chambers are exhausted.
Only a trained and qualified person may unlock the rod (i.e. place the manual override in position 1: manual disengagement) and push the cylinder
rod in the desired direction.
Caution:
Before starting up the cylinder again, the manual override must be returned to its normal operating position (position "0"). See cylinder startup
interlock system designed for this purpose: Autonomous signal control without the use of a PLC.
HORIZONTAL MOUNTING
Fig. 1
Extend
Cylinder control with a 5/3 valve, centre
control
open to exhaust (type W3)
VERTICAL MOUNTING
Caution:
In case the duly trained and qualified person wishes to operate the manual lock-up override (i.e. place it in position "1": manual disengagement),
check the area underneath the load (fig. 2) or the area between the load and the cylinder nose (fig. 3) to make sure there is no hazard.
Fig. 2 - Load underneath the cylinder
Extend
Retract
control
control
W
W
Retract
control
Fig. 3 - Load on top of the cylinder
W
Extend
Retract
control
control
3
STATIC ROD-LOCKING DEVICE Ø 32 - 100 mm
(Rod lock device supplied alone)
MECHANICAL CHARACTERISTICS
HOLDING FORCE (static):
Ø Cylinder (mm)
32 40 50 63 80 100
Holding force
790 1240 1930 3060 5400 7700
(in N)
RATE OF SPEED OF ROD : max. 0.5 m/s
PISTON ROD CHARACTERISTICS : see below
PNEUMATIC CHARACTERISTICS
FLUID : Air or neutral gas, filtered, lubricated or unlubricated
DISENGAGE PRESSURE : 2.5 bar (min.)
MAX. SYSTEM PRESSURE : 10 bar
PNEUMATIC CONNECTION : G1/8 (Ø32 - 63) - G1/4 (Ø 80 - 100)
IMPORTANT RECOMMENDATIONS
- The piston rod must have the following characteristics:
• Dimensional tolerance: f7
• Hard chromed finish or hard surface coating
and Rt= ≤ ≤ ≤ ≤ ≤ 0,25 µm
≥
• R 600 N/mm 2
• It must not present any sharp angles.
- The rod-locking device must be centered on Ø R or Ø B (see "Dimensions" below)
- The cylinder must have an overlength piston rod.
ORDERING INFORMATION
ROD-LOCKING DEVICE WITHOUT MANUAL LOCK-UP OVERRIDE
CODE ROD
Ø rod Static holding
LOCK DEVICE
(mm)
force (in N)
supplied alone
12
790 881 45 318
16 1240 881 45 319
1930
881 45 320
20
3060 881 45 321
5400 881 45 322
25
7700 881 45 323
DIMENSIONS AND WEIGHTS
S TG
ØRT = =
BG2
D
PB
VD
TB = =
F
Ø Cylinder B
M
C
32 30
ØSB
40 34.9
50 40
63 45
80 45
100 55
L
RECOMMENDATIONS FOR MOUNTING - PUTTING INTO SERVICE - MAINTENANCE
- Prior to mounting the rod-locking device, it must be put under pressure (min. 2.5 bar/max. 10 bar) in order to unlock the
mechanism. Introduce the rod into the rod-locking device and make sure to take the following precautions:
• The rod must not present any sharp angles.
• The rod must be perfectly aligned with the axis of the rod lock.
• The assembly must be made without any constraint.
Before fixing the rod-locking device on the base, depressurise the rod lock in order to be able to center it correctly on the rod.
- It is recommended to check the correct operation of the static rod-locking device once a month.
Adaptable to
Cylinder Ø (mm)
32
40
50
63
80
100
Weight of the rod locking device alone: Ø 32 = 0.4 kg
Ø 40 = 0.6 kg
Ø 50 = 1.1 kg
Ø 63 = 1.5 kg
Ø 80 = 2.6 kg
Ø 100 = 3.5 kg
BG2 C D F L M PB R RT S
8 6 20 67.5 20 33.3 47 30.5 M6 19.5 G1/8 60 32.5
8 6 20 80 20 42.5 54 35.5 M6 22.5 G1/8 70
12 8 24 100 25 58 65 40.5 M8 29 G1/8 90 46.5
12 8 24 100 25 59 75 45.5 M8 29 G1/8 90 56.5
16 12 32 120 35 69 95 45.5 M10 37 G1/4 110
16 12 32 120 35 69 114 55.5 M10 39 G1/4 110
4
SB TB TG
38
72
89