Note: Descriptions are shown in the official language in which they were submitted.
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SYSTEM ~ND METHOD FOR CUTTING AND
SPOOLING A WEB OF PAPER
TECHNICAL FIELD :
This invention relates to a system and method for
cutting a travelling web of paper being wound on one spool
and transferring the web to an empty spool while the web con-
tinues to travel.
BACXGROUND ART
It is a general practice in the paper industry to pro-
duce a continuous sheet or web of paper which is wound onto - -~
large spools. In order to have a continuous operation it is,
of course, necessary to have a system for instantaneously
switching from winding the web of paper onto a full roll to
an empty roll, particularly at modern speeds of paper produc-
tion. In U.S. Patent 2,461j246 there is shown a method of
feeding a tape onto the rotating empty roll core and causing
it to be spirally wrapped on that core as it stretches tight
across the travelling web of paper and cuts the paper, with
the cut edge being led onto the empty roll supported by the
cutting tape. Subsequent improvements have dealt with
methods of stringing the tape for cutting and feeding, and ;
the use of various types of tapes, as shown for example in
U.S. Patent 4,414,258 where there is described a tape made of
repulpable paper woven into a tape which did not interfere
with the paper making process since the paper wound adjacent
the roll is waste and is recycled. The most recent improve-
ment is disclosed in my U.S. Patent No. 4,659tO29 which
describes the use of a repulpable paper fiber tape in an
elongated guideway to direct the tape under a travelling web
of paper and direct the tape into the nip of an empty spool -
so as to cut the web of paper and start it rolling onto the
empty spool.
1327191 ~
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It is an object of this invention to provide an im-
provement in feeding the tape onto the empty spool. It is
another object to provide such a system that can be operated
from a remote control so as to avoid any possibility of in-
terfering with the travelling web of paper. A further object
includes providing the adhesive prior to entering the guide-
way beneath the paper to be cut by the cutting tape. Other
objects will appear from the more detailed description which --
follows.
BRIEF DESCRIPTION OF THE INVBNTION
This invention relates to a system for cutting with a
tape, a travelling web of paper, being wound on a first spool
and transferring that travelling web onto an empty spool by
attaching the tape to the empty spool. The tape travels
slidingly through a guideway with an elongated slot facing
upwardly underneath the web and exiting from the guideway be-
yond the edge of the web. The improvement comprises applying
an adhesive without any covering thereon to one surface of the
tape at its forward end before entering the guideway. In
other aspects a clamping means releasably grips the cutting
tape after the forward end exits the far end of the guideway -- `
and selective means releases the clamping means to permit the
end of the cutting tape to be caught by the nip and spiral
the cutting tape about the empty roll thereby cutting and
transferring the paper web.
This invention also relates to an improved method for
cutting a travelling web of paper being wound on a spool and
transferring the web after cutting to an empty spool, the
method including a cutting tape being fed into an elongated
guideway positioned beneath and extending laterally across
the web of paper, recovering the tape from the far end of
the guideway and introducing it into the nip of the empty
spool and the roller driving that spool to cause the tape
automatically to spirally wrap around the empty spool while
cutting the web of paper. The improvement comprises the
steps of:
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(1) applying adhesive without any covering thereon
to a portion of the cutting tape at its forward end prior
to feeding the cutting tape into the ~uideway; and
(2) receiving the cutting tape exiting the guideway
and feeding the forward end into the nip with the adhesive
portion contacting the empty spool. In other aspects the ~ :
reception of the tape is into a remotely controlled clamping
means which includes: -
(3) gripping the tape near its forward end by the
clamping means, and
(4) releasing the clamping means after mo~ing the
tape into contact with the nip.
: .
BRIEF DESCRIPTION OF THE DRAWINGS
The novel features believed to be characteristic of -
this invention are set forth with particularity in the ap-
pended claims. The invention itself, however, both as to
its organization and method of operation, together with ~-
further objects and advantages thereof, may best be under-
stood by reference to the following description taken in : .
connection with the accompanying drawings in which:
FIG. 1 is a perspective view of the system of rollers ::
employed in the paper industry to wind the paper web onto -.
rolls, and the present appar~tus used to transfer the leading
edge of the web to an empty spool in accord with this inven-
tion;
FIG. 2 is a schematic illustration of a first embodi- ~
ment for applying adhesive to the cutting tape; -
FIG. 3 is a schematic illustration of a second embodi~
ment for applying adhesive to the cutting tape; ::-
FIG. 4 is a cross sectional.view taken at 4--4 of :
FIG. l;
FIG. 5 is a top plan view of the cu~ting tape of the
invention; -
FIG. 6 is a schematic illustration of a third embodi-
ment for applying adhesive to the cutting tape; .
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`` 1327191
-4-
FIG. 7 is a top plan view of double-sided adhesive -
tape used in this invention;
FIG. 8 is a side elevational view of the tape of
FIG~ 7;
FIG. 9 is a schematic illustration of a fourth embodi-
ment for applying adhesive to the cutting tape;
FIG. 10 is a cross section taken at 10--10 of FIG. 9;
and
FIG. 11 is a partial perspective view showing another
clamping means to feed the cutting tape into the nip.
i DETAILED DESCRIPTION AND
BEST MODE OF THE INVENTION -
; The gçneral features of this invention are best seen
.. ...
and understood by reference to FIG. 1 which shows the general
~ type of equipment employed in a paper manufacturing plant to
i wind up the manufactured paper on rolls for storage and use
elsewhere. A continuous web of paper 20 travels at a rela-
tively rapid rate of speed to a combination of spools upon
which the paper is rolled. Paper web 20 advances toward
tension roll 21 mounted in journals on supports 22, leading
web 20 over driving roll 23 and winding about spool 24
~- turning in the direction of arrow 25. Driving roll 23 turns
in the direction of arrow 26 and is pressed against the
paper roll on spool 24 causing it to rotate in the indicated
direction. When spool 24 has been filled to the desired~!, '.~,
capacity with paper from web 20, it is necessary to cut web
20 laterally, transfer the cut edge to an empty spool 27, ~ ~
and start the web winding on that spool in the direction of - --
arrow 28 to eventually produce another filled spool, such as
spool 24. Empty spool 27 is positioned vertically above the
location shown in FIG. 1 until it is ready to accept paper
from web 20 and begin winding it up. Spool 27, which may or
~ may not be separately rotated as known in the art, is lowered
q~ until it contacts driving roll 23 and rotates with it, as
shown in FIG. 1. The cut edge of web 20 is then pushed into
the nip 29 between empty spool 27 and driving roll 23,
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:
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causing it to be wound onto spool 27 and to cause a transfer
of the paper web thereto.
The apparatus of this invention generally includes a
means for supplying a cutting tape 30 to the far edge of
empty spool 27 and for causing that tape to wrap around
spool 27 in a spiral fashion so as to cut web 20 and cause
the cut edge to be introduced onto spool 27 and be wrapped
about spool 27. A supply of cutting tape 30 is preferably
maintained on a removable drum 31 in a housing 32 which also
serves to support a cutting means 33 which, at the appro-
priate time, cuts tape 30 from the large supply on drum 31.
It will be appreciated that only a definite length of tape,
longer than the width of web 20, is needed to cut across -
web 20 laterally and to cause the cut edge to begin wrapping
itself upon empty spool 27, and thus at the appropriate
place tape 30 is cut and further tape is not needed until
spool 27 becomes filled with paper and must be replaced by
another empty spool. Tape 30 passes through cutting means
33, adhesive application means 39 (shown outside of housing
32 for illustration purposes only and preferably located
within the conflnes of housing 32, as would be understood by
persons having ordinary skill in the art) and into a
guideway 34 propelled by a driving means, e.g., hand crank
35 to cause the free end of tape 30 to move completely
.
I across the width of web 20 underneath that web in guideway
¦ 34 until it reaches the far end 36 where the free end 37 of
j tape 30 is made available to be inserted into nip 29 between
j spool 27 and driving roll 23. As seen in FIG. 5, an adhesive
~ strip 38 is applied to forward end 37 of tape 30 so that when
¦ it is introduced into nip 29 it will adhere to the surface -
of empty spool 27. In a preferred embodiemnt a mechanical
~ arm 40 is mounted on a stand 41 and has a hand 42 which
¦; grips tape 30, and on command extends hand 42 toward nip 29
3 until tape 30 is caught in nip 29 and is adhered to the sur-
face of empty spool 27. A frictional resistance is then ap-
plied to the tape 30 adjacent near snd 44, e.g., the fric-
tional resistance produced when tape 30 is dislodged from
.~ .li~
:, .
-6-
~uideway 34, causing the tape 30 to spiral across the len~th
o~ em~ty spool 27 and cut through web ~0 as i~ does so and
causes a ~rans~e~ence o~ web 20 on~o empty spool 27. 'lllis
appara~us and method a~e set ~orth in applican~'s ~.s.
Patent No. 4,783,018 issued November 8, 1988.
.
~ G. 2 is a schematic illustration o~ a ~irst em-
bodimen~ o~ ~he adhesive applicator 39 o~ P~G, 1. Cut~ing
tape 30 is in a channel gu~de 43 anywher~ between cut~er 33
and pre~erably the near end 4q o the main elon~ated guideway
3~. An opening ~5 in channel 43 exposes the central por~ion .:
o~ the lower.sur~ace o~ tape 30. Rolle~ 46 is suitably ro- .
tatabl~ mounted so that its outer surace is in opening 4S : -
with its outer portions also immersed in a pool o~ liquid
adhesive 47 in rese~voir 48. Above tape 30 in ve~tical .;
alignment with opening 45 is a p~essure roller 49 mounted on
arms 5~ which are selectively movable from a retracted re- -.
mote upward position 51 ~shown in broken lines) to a down-
ward pressure portiion as shown in solid lines in F~G. 2. ~
The pressure position presses tape 30 downwardly ~o contact . .:-
roller 46 causing adhesive 47 to be ooa~ed onto tl~e bottoln
sur~ace s~ tape 30 for a selected leng~h and wid~h, pre~er~
ably an adhesive s~rip, such as illustrated by 3~ in FIG. 5. ~ .
strip 38 is spaced inwardly o~ the side edges o~ the tape 30
so that the adhesive will no~ contac~ the guideways throu~h
~hich i~ passes, as.hexeinaf~er more ~ully described. ~n
FlG. 3 ~here is a second embodimen~ of ~he adhesive appli-
cator. Tape 30 pass-s in a channel guide 5~ having an
opening 53 in the lower side to expose ~ape 30 to the action ~.-
o~ sp~ay n~zzles 59 whiah spray adhesive 55 onto tape 30.
~n one version o~ thi~ system, cutter 33 would be located ~.
immediately ~orward o~ opening 53 so tha when the preceding
length o tape 30 ig cut, the adhesive 55 may be applied to
form a strip o~ adhesive coating immediately behind the cut
and thereby will ~orm the orwa~d end 37 ~see ~IG. 1~ ~or
che nexc length o~ ta1?e 30 to be u~3ed in cu~ting the web 30
and sta~ting ~t to ~oll oJ~to empty spool ~37. ~no~h~ v~-
~io~ would be to advance th~ ~ape 30 a~e~ cu~ing to a
''~.
~A ..
132719~
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position where the spray 55 is applied prior to advancing
the tape through main elongated guideway 34.
In FIG. 4 there is shown a preferred design of
guideway 34 for use with adhesive applicators which apply
the adhesive to the underneath surface of tape 30 as in FIGS.
2, 3 and 6. The purpose of applying the adhesive to the
lower surface of tape 30 is that when using~certain designs
of mechanical arm 40 with a telescopically extensible hand
42 it is easier to present tape 30 to hand 42 with the ad-
hesive side faciny hand 42 so it can be fed into nip 29
with the adhesive side facing upward to contact empty spool
27. Other types of mechanical arms with other movements for
hand 42 may be used possibly with the adhesive side upwards
in guideway 34. More importantly in paper making, the at-
tendant~side of the machine is the near side where housing
. .
32 and spool 31 of tape 30 is located, with the far side
having the belts and pulleys to drive the rolls, etc. Re-
filling the spool 31 with tape, adding adhesive to reservoir
48 and the like from the near side enhances the efficiencies --
of the disclosed system and method and greatly increases the
safety in use. Guideway 34 has an internal channel 56 with
a rectangular cross section designed to permit tape 30 to
slide lengthwise therein. An elongated slot 57 is parallel
to channel 55 and communicates between channel 55 and the
outside atmosphere. When tape 30 has been caught in nip 29
and starts to wind on empty spool 27 tape 30 will be pulled
laterally out of channel 55 through slot 56, and thereby
produces the frictional resistance necessary to cause tape
30 to wind spirally around spool 27 cutting web 20 and
starting the cut edge to wrap onto spool 27. In this inven-
tion when the bottom surface of tape 30 is coated with ad-
hesive 38 it is necessary to provide an undercut recess 58
which is as wide as the adhesive coating 38. In this way
tape 30 can slide through guideway 34 in channel 55 withou~ -
having the adhesive coating adhere to any yuideway ~34. An
added feature is the provision of a resilient flap cover 59
held in place by spring clip 60. Flap cover 59 keeps dirt
' :
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13~7191
out of channel 55 and yet will flex upwardly and not inhibit
the removal of tape 30 through slot 57 when that occurs
during cutting of the paper web. Also, flap cover 59 pro-
vides protection from debris and moisture of the paper tape :
30 during its travel through guideway 34.
FIG. 5 shows tape 30 witb a coating 38 where adhesivehas been applied at forward end 37. It may be seen that the
lateral edges 61 are not covered with adhesive and thereby
are available to support tape 30 as it slides in channel 56
as clearly shown in FIG. 4.
A third embodimen~ of a means for applying adhesive -
to tape 30 is shown in FIGS. 6-8. Tape 30 is supported in
a channel 62 having an opening 63 to expose the underneath
side of tape 30. Hold down roller 64 maintains a slight
pressure downward on tape 30 above opening 63. Supply
spindle 65 carries a roll of double-sided pressure-sensitive
tape 66 which includes a continuous release binder 67 and a
plurality of lengths of pressure sensitive adhesive pref-
erably separated from each successive length 68 by a short
space 69 where no adhesive is on release binder 67. Tape 66
is fed from roll 65 over pressure roller 70 rotatably mounted
on arms 71 which can move from the downward inoperative posi-
tion 72 (in broken lines) to the upward operative position in
solid lines. As tape 66 passe~ between roller 70 and tape 30,
the adhesive section 68 is pressed onto tape 30 while re-
lease tape 67 is~rolled onto spool 73. When a section 68 of
adhesive s applied to tape 30, arms 71 move to the inop- -
erative position 72 and roll 65 is stopped until needed
again. Roll 65 is shown as driving spool 73 by belt 74. It
is to be understood that the double sided adhesive may
simply be perforated, rather than spaced, in which event the
trailing adhesive length 68 will bq parted from the adhesive
length 68 applied to tape 30 due to advancement of tape 30
after roller 70 moves to its inoperative position 72.
In FIGS. 9-10 there is shown a fourth embodiment for
applying adhesive to tape 30 employing a double-sided pres-`
sure sensitive tape 66 as shown in FIGS. 7 and 3. A pressure
, ' ' :'.
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g
roller 75 is mounted to apply pressure to tape 30 while in -.
guideway 43 lying above a length of double-sided adhesive
tape 66 also in guideway 43. After release tape 67 is
peeled awa~, tape 30 is left with a specific portion of its . :
bottom side coated with adhesive as at 38 in FIG. 5 which is .
then available to be forwarded to the nip 29 of rolls 23 and
27 to cut web 20 and start spooling the web 20 on roll 27.
In this embodiment double-sided adhesive tape 66 is fed from ~
spool 65 into the undercut recess 58 at the bottom of :
~uideway 43 to a forward location 87, with release tape 67
between recess 58 and the upward facing strip of adhesive 68 .
(see FIGS. 7-8). Tape 30 is then advanced in internal ~;
channel 56 over the top of tape 66 in recess 58 and stopped
with its forward cut end at 87. Handle 80 is then pushed
forward to position 81 where pressure roller 75 is pressing :~
downward on tape 30 over the width of recess 58, and the ~ .
handle 80 pushed forward to position 82. By reason of the
pivoting about rollers 78 in rails 77 this movement causes :
roller 75 to press down tape 30 into recess 58 to contact
adhesive portion 68 of double-sided tape 66 and cause ad~
hesive tape 66 to stick to tape 30. Rolls 76 are sized to
eventually touch the top of guideway 43 and prevent roll 75
from applying more pressure on tape 30 than that necessary
to pick up adhesive tape 66. Handle 80 is then pulled back
to its original position and released in its upright posi-
tion (solid lines) which allows tape 30 to return to its
original undeformed flat condition not pressed into recess :
58. In returning to its original position one of supports
79 pushes on head 83 causing contact pad 88 to touch contact
plate 85 providing electric power to a means (not shown) to
turn spool 73 in the direction of arrow 89. This causes -~
release tape 67 to be stripped from the adhesive stuck to
tape 30, and at the same time, to advance the next section
68 of two-sided adhesive tape 66 along recess 58 to forward
position 87. The means of turning spools 65 and 73 simul-- .
taneously is shown as a V-belt 86 operating in pulleys 90. .::~:
Obviously other driving means such as gears, chain-and-
sprocket, and the like can be employed for the same purpose.
~ ~ ,
1327191 : ~
-10- "'' "
This finishes the cycle and prepares tape 30 for advancement
to nip 29 to cut we~ 20 and start rolling it onto spool 27,
while a new section of tape 30 is advanced to point 87 to
have an adhesive spot applied to it.
Several embodiments have been shown for applying a
strip of adhesive to cutting tape 30. It is to be under-
stood that other means may be equally operative and are
intended to be included in this invention. The means shown
in FIGS. 2, 3, 6, 9 and 10 are preferred embodiment~i, but
other means, mechanical, manual, or otherwise are operative.
It is only necessary to this invention that the adhesive
strip be applied before the tape reaches near end 44 of
guideway 34. This is a safety measure to permit all opera- ::~
tions to be controlled by an operator located adjacent near .
end 44 without ever needing to be present at the far end of
guideway 34.
Another clamping means is shown in FIG. 11. An angle
support structure 155 extends outwardly from far end 36
(having a different bend or configuration from end 36 of FIG.
1) of guideway 34. A motor 156 and gear box 157 provide the
power to rotate knurled cylinder 158 mounted on a shaft 159.
Tape 30 moves forward between cylinder 158 and table 160
pivotally mounted at 159 to structure 155 until forward
cutting tape end 37 extends beyond table 160. Movement of
tape 30 is~then stopped by table 160 being pressed upward
against cylinder 158 causing a laxge loop 161 of tape 30 to
build up behind cylinder 158. Table 160 is pivoted about
pin 162 by the upward movement of a head ~not shown) con-
nected to a fluid operated cylinder 164~ Table 160 moves
from its normal position to an upward position shown in FIG.
11 where it presses tape 30 against cylinder 158 to stop
forward movement of tape 30. When the operator wants to
introduce leading end 37 into the nip 29 cylinder 158 is
caused to rotate in the direction of arrow 168 against an
idler roller (not shown) in table 160 and thereby to ad-
vance leading end 37. When leading end 37 contacts nip 29
the tape 30 is pulled sidewise away from the clamping means
.
:. . '
` 1327191
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and is wrapped spirally around roll 27, cutting web 20 and
starting the cut edge of web 20 to be rolled up onto spool
27.
While the invention has been described with respect
to certain specific embodiments, it will be appreciated
that many modifications and changes may be made by those
skilled in the art without departing from the spirit of the
invention. It is intended, therefore, by the appended
claims to cover all such modifications and changes as fall : .
within the true spirit and scope of the invention.
