Schrader Bellows

Schrader Bellows
Workshop on
Industrial Pneumatics
Pneumatic circuit elements
•2 way & 3 valves
•Spool valves
•Poppet valves
•Non return valves
•Shuttle valves
•Quick exhaust valves
•Flow control valves
•Diaphragm operated 2/2 valves
•Pulse valves
•Slider valves
•2/2,3/2 Midget poppet valves
•Quick couplers
2 way valves
In
Out
Normally closed 2 way valve
In
Out
Normally closed 2 way valve
Actuated
2 way, 2 port, 2 position
3 way valves
Exhaust
Out
or cyl.
port
Exhaust
In
Normally closed 3 way valve
Direct acting type
Out
or cyl.
port
In
Normally closed 3 way valve, Actuated
Direct acting type
3 way, 3 port, 2 position
3 way valves
In
Normally closed
3 Way Valve,
Spool type
In
Normally closed
3 Way Valve,
Actuated, Spool type
3 way, 3 port, 2 position
Spool valves
In
5/2 New gen. spool valve
In
5/2 New gen. spool valve
Actuated
4 way, 5 port, 2 position
solenoid operated with
manual over ride
Poppet valves
5/2 Single solenoid poppet valve
5/2 Single solenoid poppet valve
Actuated
Non return valves
Free flow
Check valve
Shuttle valves
Outlet port
Port A
Port B
Outlet port
Port A
Port B
Shuttle valve
Quick exhaust valves
Inlet port
Cyl.
port
Exhaust port
Quick exhaust valve
Flow control valves
Inline flow control valve
Banjo flow control valve
Diaphragm operated 2/2
valves
Diaphragm operated 2/2 valve
Pulse valves
Inlet
port
Outlet
port
Pulse valve
Slider valves
2/2,3/2 Midget poppet valves
Actuated
Midget poppet valve
Midget poppet valves
Quick couplers
Quick coupler
Simple Pneumatic Circuits
Logic functions
“OR” FUNCTION
C
D
A
B
“AND” FUNCTION
A
B
3/2 BUTTON OPERATED
SPRING RTN. VALVE
3/2 PILOT OPERATED
SPRING RTN. VALVE
( NORMALLY CLOSED )
Logic functions
MEMORY FUNCTION ( UNLIMITED )
C
B
“NOT” FUNCTION
E
C
D
A
5/2 DOUBLE PILOT
OPERATED VALVE
MEMORY FUNCTION ( LIMITED )
A
B
RESERVOIR
3/2 PILOT OPERATED
SPRING RTN. VALVE
( NORMALLY OPEN )
B
C
D
FLOW CONTROL VALVE
A
5/2 SINGLE PILOT
OPERATED VALVE
Increasing or decreasing
cylinder piston speed
Piston speed
Piston speed
Increased
Controlled flow
Free flow
F.C.V.
Controlled
Actuating hopper door
HOPPER
DOOR
Semiautomatic loading device
ROLLER LEVER VALVE
ACTUAL POSITION
ROLLER LEVER
OPT. 3/2 VALVE
Automatic loading device
1.2
1.3
ROLLER LEVER VALVES
ACTUAL POSITION
1.2
1.3
ROLLER LEVER
OPT. 3/2 VALVES
ON/OFF
VALVE
AUTOMATIC LOADING DEVICE
Clamp and punch circuit
FLOW CONTROL
VALVES
SEQUENCE
5/2 DOUBLE
PILOT VALVES
( PV 1 )
A+
B+
B-
PUNCH CYLINDER B
A-
3/2 WAY
TRIP VALVE
( LS 2 )
3/2 WAY
PLUNGER
OPERATED
VALVE
( LS 3 )
CLAMP CYLINDER A
VICE
FLOW CONTROL
VALVES
3/2 WAY
TRIP VALVE
( LS 1 )
5/2 PUSH BUTTON
PILOT RTN. VALVE
( PB 1 )
(FRL)
AIR PREPARATION UNIT
CLAMP AND PUNCH CIRCUIT
( USING ONE WAY TRIP VALVES )
Air preparation units
Pneumatic filter
1
LOUVRES
2 BOWL
3 BAFFLE
1
4
4 FILTER ELEMENT
5 DRAIN
6 SILENT ZONE
3
6
2
7
5
7 CONDENSATE
( REMOVED FROM COMPRESSED AIR )
Pressure regulator
RUBBER DIAPHRAGM
4
1
2
2 SPRING
3
3 RELIEF VALVE
1
5
4 KNOB
5 REGULATOR VALVE
Pneumatic lubricator
2
9
6
1
OIL FILL PLUG
2 OIL FLOW ADJUSTMENT SCREW
1
8
7
3 BOWL
4 CHECK VALVE
4
5 LUBRICATING OIL
6 NEEDLE VALVE
7 TUBULAR PASSAGE
3
8 SIPHON
5
9 SIGHTFEED DOME
Pneumatic applications
Move
Move
Hold
Form
Form
Process
Process
Pneumatic cylinder
2
14
1
12
17
10
7
13
19
5
3
16 8
6 15
9
4
18
7
Cushioning arrangement
(Inch series cylinders)
Piston rod
inside the
cushioning
area
Piston rod
coming out of
cushioning area
Cushioning arrangement
with cushioning screw details
High speed breakaway arrangement
with check screw details.
Cushioning arrangement
( ISO/VDMA cylinders)
Piston rod
coming out of
cushioning area
Piston rod
inside the
cushioning
area
Cushioning arrangement
of ISO cylinder
Unique cushioning seal design
gives high speed breakaway
PNEUMATIC CIRCUIT DIAGRAM
PNEUMATIC CIRCUIT DIAGRAM
SCHEMATIC VIEW
SCHEMATIC VIEW
BOTTLE COLLATION ZONE