21
Feeder
The feeder of the machine consists of a three-phase motor that
runs the out-feed roller via a planetary gear. The planetary gear
and the motor are suspended on the out-feed roller. This can
cause the motor and the gear to move slightly during operation,
but that is only normal. Through the out-feed roller, in the centre
of the planetary gear, there is a shear pin that drives round the
out-feed roller. The out-feed roller runs the other feed rollers via
a chain transmission. The sprockets are secured with screws on
the rollers. The chains for this transmission must not be tightened
too much, as this can hinder the vertical movement of the rollers.
The chains can be separated by chain locks.
Risk of a planetary gear breakdown.
Never turn the adjustment knob of the planetary gear unless
the feed motor is running.
Feed Rollers
PH 260 has ve feed rollers, which feed the work pieces through
the machine. Four of these rollers are of ribbed metal and the
last one has a rubber coating so that the surface of the work
piece will not be marked when it exits the machine.
The feed rollers are run by a separate motor with a planetary
gear. The rubber roller goes into the planetary gear. On the
rubber roller there is a sprocket, which on its part runs the other
four feed rollers via chain transmission.
Adjusting the feed roller pressure
On each end of the feeding rollers, there is a spring mounted
bearing housing. Under the bearing housing there is a spring
on a threaded bar. The pressure the feed rollers apply to the
work piece can be adjusted by turning the nut on the bottom of
each threaded bar. Make sure the pressure is the same at both
ends of the feed rollers.
Lubricate the bearing housings of the feed rollers with oil after
each work session.
The rubber roller should also be adjusted so that it applies just
the right pressure to the work piece. Remember that this feed
roller should be set by the thickness the work piece has when
leaving the cutters.
Wood debris can accumulate under the feed rollers’ spring
mounted bearings. This impairs the feeding and increases
the risk of the work piece being hurled out of the machine.
Check these areas and, if necessary, remove the wood
debris that has accumulated there.
Adjusting the feeding speed
The stepless feeding speed can be adjusted by turning the
knob on the planetary gear. If the knob is turned clockwise
the feeding speed is increased; if it is turned anticlockwise the
feeding speed is lowered.
Do not adjust the feeding speed if the motor of the feed
rollers is not running.
The optimum feeding speed varies depending on what sort of
wood you are machining, the moisture content of the wood,
and what type of moulding knives you have mounted in the
machine.
On the standard version of the machine the feeding speed can
be adjusted from 2 m/min. to 12 m/min. As an option you can
replace the motor and the planetary gear to obtain a feeding
speed of 4-24 m/min. (ref. no. 7000-000-2001).
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