Wexxar WF-10T, Руководство по эксплуатации и обслуживанию

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WF-10T Case Former Theory of Operation
4-19
3) Case Injection
The next step in the sequence is to move
the case
DOWN
into the case forming
jawplates. The case injector pushes
downwards on the top edge of the
separated case to impale the bottom
edges of the corrugated case onto a series
of sharp pins mounted on the inner
surfaces of the jawplate assembly that
penetrate into case corrugation flutes.
When the injector returns to the
UP
position, it leaves the case securely held
by these pins of the Pin and Dome
mechanical gripping system developed by
Wexxar/BEL.
4) Horizontal Carriage Travel; Jawplates Open
The case opening action now occurs. The jawplates are opened by means of a
pneumatically driven sliding carriage, which moves forward down a linear guide track
across the machine’s sub-frame. The movement of the carriage in the horizontal plane
towards the conveyor assembly triggers the adjustable Dimension ‘C’ inductive sensor,
causing the jawplates to pivot on the carriage, thereby rotating the case 90°
into a fully
OPEN
position while still held securely by the pins.
5) Flap Folding
After the case has been fully opened, it is
transferred into the flap folder, a system
that folds both the case’s major and minor
flaps. As a case enters the flap folding
section, the bottom leading minor flap is
passively folded by an adjustable center
ski. Once the case has been conveyed
over the center ski, the rear flap folder
kicks the rear bottom minor flap into a
horizontal position. The carriage is then
lowered, disengaging the pins from the
corrugate. The placement of the case on
top of the kicker arm and between the
spring-loaded pressure plates allows the
case to stay in place when the pins are
retracted. The carriage then returns to its
home position.
The case is then conveyed by the symmetrical Uni-Drive conveyor system until it reaches
the major flap folders. The major flap folders then activate, emerging from their resting
positions under the side-belt conveyor housings, and fold the major flaps into a horizontal
position. After a short delay, each of the flap folders
are reset, ready for the next case.
As the case continues to be conveyed forward, the folded major flaps make contact with
a ramp, which ensures that the bottom of the case is completely flat as it enters the tape
application stage.
Figure 4-1: Injector Down; Pins
Penetrating Corrugate Flutes
Figure 4-2: Rear Flap
Folder Kicker Arm Actuated