A-9
Exercise 4
Pneumatics
Subject
Vertical switching point for briquettes
Title
Direct actuation of a double-acting cylinder
Training aims
Operation of a 5/2-way valve with spring return and selector switch
Drawing the displacement-step diagram (without signal lines)
Designing and drawing the circuit diagram
Comparing one’s own solution to the one proposed
Constructing the circuit
Function check
Adjusting the stroke times using the one-way flow control valves
Follow up
Dismantling and orderly replacement of components
TP101 • Festo Didactic
Problem
A-10
Exercise 4
Problem description
With the help of the vertical switching point, soft cool (lignite) briquettes
are to be fed to an upper or lower conveyor, according to selection.
The destination of the swivelling slide (upper or lower) is decided by
means of a valve with selector switch. The upward motion of the doubleacting cylinder (1A) is to take place in t1 = 3 seconds; the downward motion in t2 = 2.5 seconds. Pressure on both sides of the piston is indicated. In the initial position, the cylinder assumes the retracted end
position.
Fig. 4/1: Positional sketch
1A
TP101 • Festo Didactic