AVL Looms Jacq3G, Руководство пользователя

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Jacq3G Loom User’s Manual Using the Jacq3G Loom
Shed Operation Page | 135
S
HED
O
PERATION
The AVL Jacq3 is a Counter-Marche mechanism. For each shed, all hooks are
engaged, that is they are pulled up or down, to create the shed. If selected
to rise, the Solenoid will push the Hook into position to be picked up by the
upper slide bar. If is it not to be raised, the Hook will engage with the lower
slide bar and be lowered. The mechanics which drive the Shed Mechanism
will vary depending on the type of Loom, whether it be Electric (E-Lift), or
Pneumatic (A-Lift).
Once the Solenoids fire and the selection is made, if for any reason, the shed
is not opened within 20 seconds, the Solenoids will deactivate. This is a
safety feature that has been built into the hardware, to prevent overheating
of the Solenoids. When activity is resumed, the selection will be for the last,
incomplete pick. There is no need to reverse to insure continuity.
This double-action shed is made by the simultaneous rising and dropping of
hooks. In the reed, under tension, there are three (3) positions for the warp.
Warp Position Description
Open Slide Bars are separated, the shed is OPEN and ready to
receive the shuttle. The selected hooks have been pulled
up by the Upper Slide Bar and the deselected hooks have
been lowered on the Lower Slide Bar.
Closed Slide Bars are at their closest position to each other.
The shed is closed between picks. In this position, the
warp yarns coming through the center of the reed height
and will not be in a single, level plane, but will “shingle”,
or come through the reed at a slight angle, repeated
again for each module, across the reed. The first warp
end in a Module will be at approximately the center of the
reed and subsequent warp ends will progress at an angle,
with the last warp end in a particular Module at a slightly
higher position in the reed. This will repeat across the
reed for each Module.
NOTE:
The hooks should never be engaged when in this position;
there should be no computer communication at this time.