Winding – tensioning – or guiding – Unwinding – With attachment to preceding material
Reexamination Certificate
2002-04-04
2004-11-23
Jillions, John M. (Department: 3654)
Winding, tensioning, or guiding
Unwinding
With attachment to preceding material
C242S554200, C242S556100, C242S562100, C156S504000
Reexamination Certificate
active
06820836
ABSTRACT:
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The present invention relates to a fiberboard (fibreboard) splice apparatus, a corrugate machine including this fiberboard splice apparatus, and a fiberboard feed method, and more particularly to a fiberboard splice apparatus, a corrugate machine including this fiberboard splice apparatus, and a fiberboard feed method, which are suitable for automatization of a preparatory process for fiberboard splice.
(2) Description of the Related Art
FIG. 14
is an illustration of a mechanical construction of a single facer part of a corrugate machine which produces a corrugated fiberboard sheet.
As
FIG. 14
shows, mill roll stands
52
, which are made to unwind (unroll) roll fiberboard (rolled base paper)
53
and
54
for fiberboard supply, being located before and after a single facer
51
[that is, on the upstream and downstream sides in a web conveying direction (web advancing direction)]. The roll fiberboard
53
is paper put presently in use for production, while the roll fiberboard
54
is paper placed in a stand-by condition to be fed immediately to the single facer
51
in place of the roll fiber board
53
in the case of an exhaustion of the roll fiberboard or a fiberboard replacement involved in an order change. At the replacement (interchange) of the roll fiberboard
53
with the roll fiberboard
54
, a fiberboard splice apparatus
56
joints or connects the front end (tip) portion of a new fiberboard (fiberboard to be supplied from the roll fiberboard
54
; new web) to the rear end portion of the old fiberboard (fiberboard to be fed from the roll fiberboard
53
; old web) in an overlapped condition.
Secondly a description will be given hereinbelow of the outline of the fiberboard splice apparatus
56
.
As
FIG. 14
shows, the fiberboard splice apparatus
56
is located on a bridge
55
installed to extend above the mill roll stands
52
and the single facer
51
. In this fiberboard splice apparatus
56
, a fiberboard splice unit
60
is situated to be movable in the web conveying direction. That is, the fiberboard splice unit
60
is placed to be movable from the upstream side to the downstream side in the web advancing direction. In general, in the splice works, the fiberboard splice unit
60
is shifted to a predetermined position above the new fiberboard (in this case, the fiberboard to be supplied from the roll fiberboard
54
). Incidentally, although a dancer roll and others are incorporated into the fiberboard splice apparatus
66
, they are omitted here from the illustration.
In addition, referring to
FIG. 15
, a detailed description will be given hereinbelow of the fiberboard splice unit
60
.
As
FIG. 15
shows, upper and lower guide rolls
62
and
63
are set on both side frames
61
of the fiberboard splice unit
60
extending in a web cross direction. On an inner side of the frame
61
, there are set a pair of frames
64
a
and
64
b
made to rock around an axis X of the upper guide roller
62
, and to these frames
64
a
and
64
b,
there are respectively attached fixed stop bars
66
a,
66
b,
movable stop bars
67
a,
67
b,
pressing bars
68
a,
68
b
and knives
69
a,
69
b.
These will collectively be referred to hereinafter as fiberboard splice parts
65
a
and
65
b.
Additionally, a suction device (not shown) is built in the pressing bars
68
a
and
68
b
to provide a function to suck and hold a new fiberboard (new web) forwarded from a roll fiberboard. In the illustration, the new fiberboard
54
a
is sucked and held by the pressing bar
68
b.
As
FIG. 15
shows, as this fiberboard splice parts
65
a
and
65
b,
two sets of fiberboard splice parts are located symmetrically in conjunction with the roll fiberboard
53
[old fiberboard (old web)
53
a
] and the roll fiberboard
54
[new fiberboard (new web)
54
a
], respectively. In this illustration, the old web
53
a
from the roll fiberboard (old roll fiberboard)
53
unrolled travels on one fiberboard splice part
65
a
side while the new web
54
a
from the roll fiberboard (new roll fiberboard)
54
unrolled is in the stand-by condition on the other fiberboard splice part
65
b
side. Additionally, a pressure sensitive adhesive double coated tape
70
is adhered onto the tip portion of the new web
54
a.
Furthermore, a brief description will be given hereinbelow of the fiberboard splice process.
First of all, in response to a fiberboard splice command, the movable stop bar
67
a
of the fiberboard splice part
65
a
is shifted to hold the old web
53
a
together with the fixed stop bar
66
a
to stop the traveling of the old web
53
a.
Following this, both the fiberboard splice parts
65
a
and
65
b
are rotated to cause the pressing bars
68
a
and
68
b
to approach each other and finally come into contact with each other so that the adhesion between the new and old webs
53
a
and
54
a
takes place through the use of the pressure sensitive adhesive double coated tape
70
. Then, the knife
69
a
of the fiberboard splice part
65
a
is actuated to cut the old web
53
a.
Thereafter, an acceleration roll
71
makes the new web
54
a,
being in a stopping state after the fiberboard splice, travel while accelerated, thus returning to the ordinary operating condition.
Although the above description involves the fiberboard splice process after the pressure sensitive adhesive double coated tape
70
is attached onto the front end portion of the new web
54
a
and the new web
54
a
is held on the pressing bar
68
b,
a preparatory process is necessary before this state.
This preparatory process will be described hereinbelow with reference to
FIGS. 16A
to
16
D.
First of all, as shown in
FIG. 16A
, a new roll fiberboard (roll fiberboard for feeding a new web
54
a
)
54
is put on a fiberboard supply carriage
57
to be carried into a predetermined position between arms
52
a
and
52
a
of a mill roll stand
52
. The front end portion of the new roll fiberboard
54
is fixed with a tape
58
to prevent the new roll fiberboard
54
from getting loose during conveyance.
Secondly, as shown in
FIG. 16B
, when the new roll fiberboard
54
has been carried into the predetermined position, the arms
52
a
and
52
a
of the mill roll stand
52
chuck the new roll fiberboard
54
with their end portions and lifts the new roll fiberboard
54
so that the new web
54
a
can be drawn out therefrom.
Following this, an operator peels the tape
58
or cuts it, and then, as shown in
FIG. 16C
, the tip portion of the new roll fiberboard
54
is pulled out to take out the new web
54
a
and is introduced through a predetermined roll up to the fiberboard splice part
65
b
of the fiberboard splice unit
60
.
In this case, for easy preparatory work, the fiberboard splice part
65
b
of the fiberboard splice unit
60
is pushed down to a position indicated by a two-dot chain line in FIG.
15
. In this connection, the position indicated by a solid line in
FIG. 15
is referred to as a “stand-by position”, while the position indicated by the two-dot chain line in the illustration is called the “preparatory position”.
Furthermore, as shown in
FIG. 16D
, the new web
54
a
introduced into the fiberboard splice part
65
b
is guided through the guide roll
62
, the fixed stop bar
66
b
and the knife
69
b
to the pressing bar
68
b,
and the tip portion thereof is cut to remove the fiberboard of a predetermined appropriate length (for example, approximately one turn of the fiberboard roll). The cut tip portion is held by the pressing bar
68
b
and the pressure sensitive adhesive double coated tape
70
is adhered onto a surface thereof. Thereafter, as indicated by the solid line in
FIG. 15
, the frame
64
b
is rotated up to the normal stand-by position, at which the preparation (setup) for the fiberboard splice process reaches completion.
In this case, the tip portion of the new web
54
a,
for example, corresponding to approximately one turn of a roll fiberboard, is abandoned. This is because, when the tape
58
is peeled or c
Sasashige Hiroaki
Sato Hiroshi
Armstrong Kratz Quintos Hanson & Brooks, LLP
Jillions John M.
Mitsubishi Heavy Industries Ltd.
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