Hydraulic Speed Control - Dukane iq series User Manual

Hydraulic Speed Control

SLOW SPEED Control and
Indicator Flags
The thruster has a knob labelled SLOW SPEED near the
bottom of the front panel and a SLOW SPEED indicator
flag. Refer to Figure 6-3.
The knob and the indicator flag are part of the optional
Hydraulic Speed Control Kit.
The purpose of the hydraulic speed control is to match
the downstroke speed to the material melt flow. This will
produce the strongest joint. The Slow Speed Setting knob
adjusts the point along the 7 inch (177.8 mm) downstroke
distance at which the hydraulic speed control will engage.
It should be set to engage just before the horn contacts
the part. The maximum distance over which this kit can
control the downstroke speed is 1 inch (25.4 mm).
The middle of the indicator flag, when referenced to the
scale beside the flag slot, shows where the 1 inch (25.4
mm) of slow speed is set to begin.
Hydraulic Speed Control Kit
Operation
The hydraulic speed control kit, shown in Figure 6-4, is a
combination impact absorber and hydraulic check valve.
The kit contains a sealed hydraulic cylinder with an ex-
ternal plunger. The cylinder is mounted to the stationary
part of the thruster.
The kit also has a contact block that is mounted to the
slide assembly of the thruster. When the slide assembly
descends, the contact block descends until it engages the
plunger of the stationary hydraulic cylinder and pushes the
plunger down into the cylinder. The design of the cylinder
resists the downward motion of the plunger by metering
the pure silicone fluid through an adjustable internal flow
aperture, resulting in a constant speed of the slide assembly.
The hydraulic cylinder is mounted in a clamping block.
The block is threaded onto a long rod.
Dukane Manual Part No. 403-586-02
50
4
3
2 5
1 6
0 7
LOOSEN THE
THUMBSCREW TO
UNLOCK KNOB
20
LOWERS
SPEED CONTROL
TRIGGER
3 5 0
Figure 6-3 Example of Slow Speed Setting
The optional air cylinders (1.5", 2", and
3" in diameter) are factory installed and
do not require any field adjustments.
Section 6 - Options
NOTE
Slow Speed
}
range is lim-
ited to 1" (2.5
c m ) b e l o w
t h e S t r o k e
Position set
point.
NOTE
Continued
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