Preparing The Foils To Be Jointed - HURNER HSK HWW-1000 Manual Del Usuario

wedge is recommended, in order to imitate the air channel that forms
behind the welding wedge in the course of the welding process.
During a welding operation, the welding wedge has to be centered
between the foils and press them consistently against the nip rollers.
When the wedge is in the proper position, the pin at its tip is located
totally horizontally between the foils. In verifying if this is the case,
check whether the height of the wedge has to be adjusted. If so, use
the supplied hex key on the adjustment screw in the base of the wedge
welder. The longitudinal position of the wedge in front of the nip
rollers is determined by the eyelet in the positioning disk into
which the lock pin of the catch snaps. This means that adjusting
the wedge position properly, depending on the foil thickness,
requires you to pull out the lock pin, loosen the positioning
disk using the supplied hex key, turn it so the eyelet is in the
required position, and fasten the positioning disk again.
The rollers that press the foils against the welding wedge from
above and below have to be set, using the adjustment screws,
in such a way that all 3 rollers on both sides are in the optimum
position to apply consistent pressure onto the foils. Both screws
(a hexagon head screw above, a hex key screw below) are fas-
tened by locking nuts. To adjust the rollers, loosen the locking
nut first and unscrew the screw to the point where it does no
longer exert any pressure on the carriage holding the rollers.
For the lower adjustment screw this requires removing the dust
cover first. Then re-tighten the screw to the point where turning
it requires some force, which indicates that it applies pressure
again on the roller carriage. From the point where you have to apply
some force to turn it, tighten it a little more, then lock it by fastening
the locking nut again. Verify by a visual check that all contour rollers
are optimally positioned on the foils. When done, reinstall the dust
cover on the lower adjustment screw.
4.6

Preparing the Foils to Be Jointed

The two foils that are going to be welded have to be inserted into
the wedge welder as follows: insert the right-hand foil, looking at the
display, above the welding wedge through to the left-hand butt; insert
the left-hand foil, looking at the display, below the welding
wedge through to the right-hand butt. Both foils to be jointed
have to be prepared for welding and laid flat on the ground
for the entire length of the joint. The overlap of both has to be
approx. 15 cm (6 inches).
The plastic foils must not touch the welding wedge
yet at this point. Contact is first o.k. when the welder
is "pushed into" the plastic foils (see Sect. 4.8).
Important
Then press the  key. A screen shows that allows selecting the mate-
rial, the thickness, and the nominal temperature of the inserted foils.
Select the row you need using the ñ, ò key and press the MENU key
to open the selection screen proper. In that screen, confirm your selec-
tion by pressing the START/SET key. The data selected on these screens
will remain valid and show in the standard screen before welding
(Display 2) until a change of these data at a later date.
By pressing the START/SET key when the standard screen (Display 2)
shows, the welding process starts by the confirmation of the nominal
temperature of the welding wedge.
12
EN
HÜRNER | HSK HWW–1000 User's Manual
HSK Kunststoff-Schweißtechnik GmbH
53604 Bad Honnef, Germany
Hex screw in slotted hole
(hidden)
to loosen/fasten the positioning
disk
Catch, lock pin snapped
into the disk eyelet
Adjustment Screw for Lower
Contour Rollers
cover when the product ships)
Adjustment Screw for
the Height of the
Welding Wedge
Adjustment Screw for
Upper Contour Rollers
Zilzkreuz 1
Positioning Disk
(hidden by a dust
Version February 2014