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SePt- 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, _l959
l6 Sheets-Sheet 1.
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INVENTOR
KARL E COSSABOON
BY
ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
l6 Sheets-Sheet 2
Q.
INVENTOR
KARL F. COSSABOON
ATTORNEY
Sept“ 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
FIGEZ
16 Sheets-Sheet 3
INVENTOR
KARL F.' COSSABOON
SePt- 25, 1962
K. F. cossABooN
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 4
FIG.4
INVENTOR
s
KARL F COSSABOON
“WWW
ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 19,59
16 Sheets-Sheet 5
FIG.6
-
INVENTOR
KARL E 0055:1800" .
BY {W nMW
ATTORNEY
Sept. 25, 1962
K. F. cossABooN
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
FIG.9
16 Sheets-Sheet 6
INVENTOR
KARL F. COSSABOON‘
Byfyw 73M m
ATTORNEY
Sept. 25, 1962
K, F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Shéets-Sheet 7
FIG. 10
INVENTOR
KARL E COSSABOON
ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 8
INVENTOR
KARL F. COSSABOON
BY {W 79M 74M
ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 9
FIGJZ
INVENTOR
KARL F. COSSABOON
BY {7w 73M
ATTORNEY
Sept. 25, 1962
K. F. cossABooN
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 1 O
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INVENTOR
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KARL F. COSSABOON
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ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 11
FIG.17
INVENTOR
KARL F. COSSABOON]
ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 12
FIG-19
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ADHESIVE AREAS ON BACK
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INVENTOR
KARL F. COSSABOON
“$7..” 73M M
ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,955,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
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ATTORNEY
Sept. 25, 1962
K. F. COSSABOON
3,055,337
APPARATUS F OR TREATMENT OF‘ WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet 14 _
FIG.Z4
INVENTOR
KARL E COSSABOON
BY
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ATTORNEY
Sept. 25, 1962
K. F. cossABooN
3,055,337
APPARATUS FOR TREATMENT OF‘ WEBS
Filed Sept. 9, 1959
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l6 Sheets-Sheet 15
FIG-26
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INVENTOR
KARL F COSSABOON
“£7...” 73M
ATTORNEY
Sept. 25, 1962
K‘. F. COSSABOON
3,955,337
APPARATUS FOR TREATMENT OF WEBS
Filed Sept. 9, 1959
16 Sheets-Sheet l6
INVENTOR
KARL E COSSABOON
BY {W HM
ATTORNEY
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1.
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tent
3,955,337
Patented Sept. 25, 1962
2
1
taken along the lines 3—3 of FIGURE 2 of the unwind
3,055,337
APPARATUS FOR TREATMENT OF WEBS
Karl E. Cossaboon, Claymont, DeL, assignor to E. I. du
Pont de Nemours and Company, Wilmington, Del., a
corporation of Delaware
Filed Sept. 9, I959, Ser. No. 838,989
19 Claims.
{0. 118'—41)
This invention relates to a completely integrated auto
matic apparatus for unwinding webs from rolls, splicing
the successive strips, treating the webs, rewinding the
treated webs into rolls and removing the latter all under
controlled conditions. The invention also relates to an
automatic roll changing unwind unit for supplying webs
unit;
FIGURE 4 is a plan view (with parts in section) of
the unwind unit taken along lines 4-4 of FIGURE 2;
FIGURE 5 is a vertical section taken through the chuck
taken along the lines 5—5 of FIGURE 4;
FIGURE 5A is an enlarged fragmentary section of
the cylindrical ?anges on an end of the web roll mandrel;
FIGURE 6 is a plan view (with parts in section) of
the unwind unit, taken along lines 6——6 of FIGURE 2;
FIGURE 7 is an enlarged elevation of the cam mech
anism for positioning the splice roll;
FIGURE 8 is an enlarged elevation of the outer door;
FIGURE 9 is a detailed side elevation (with parts in
to such an apparatus and removing the cores under con 15 section) of the rewind unit;
trolled vacuum conditions.
It also relates to an auto
matic roll handling unit for applying treated web to cores
and removing wound rolls of web from such an apparatus
under controlled vacuum conditions. The invention also
FIGURE 10 is an end elevation (with parts in section)
of the rewind unit taken along the lines 10—10 of FIG
URE 9;
FIGURE 11 is a plan view (with parts in section) of
is concerned with such a unit which has means for re
the rewind unit taken along the lines 11-—11 of FIG
winding the web with either desired surface outermost on
the rewound rolls. Still more particularly the invention
relates to an integrated apparatus in which the web sup
plying unit and the web rewinding and removing unit are
URE 9;
FIGURE 12 is a plan view (with parts in section) of
the rewind unit taken along the lines 12—12 of FIG
Various types of machines are known for supplying
rolls of webs to be treated as a continuous strip. How
ever, they do not lend themselves readily to a continuous
lever mechanism for the door of FIGURE 13;
operation wherein a coating operation is continuously
(unwind unit);
carried out under conditions of highly reduced pressure.
Also, they generally have an accumulator chamber to
store the web while splicing so that there will be no inter
ference with the treating or other operation.
An object of this invention is to provide a practical and
FIGURE 16 is a detailed vertical sectional view taken
along the lines I6¢-—I6 of the door of FIGURE 15 to
URE 9;
operated in synchronism through an electronic web foot 25 FIGURE 13 is a detailed vertical sectional view of
age counter, and means for controlling, severing and
the door to the inner chamber (rewind unit);
FIGURE 14 is an elevation of the detail of cylinder and
splicing the web are provided.
dependable apparatus for continuously treating a web,
FIGURE 15 is an end elevation of the door, closure
cylinder and mechanism for the inner vacuum chamber
the inner chamber (unwind unit);
FIGURE 17 is a side elevation of the operating cylin
der, rack and gear segment which operates the roll-trans
especially under reduced pressure conditions, while con
fer arms for the unwind unit;
FIGURE 18 is a detailed elevation of the web-sever
tinuously supplying separate rolls of Web and removing
ing knife for the unwind unit;
the cores, and while rewinding the treated Web onto sepa 40
rately supplied cores and removing the rewound rolls.
Another object is to provide such an apparatus which can
be maintained under reduced pressure and lightproofed
conditions over long periods of time. Yet another object
is to provide such an apparatus which can be operated at
FIGURE 19 is a plan view showing details of one end
of the web-severing knife, lever and pivots for the un
wind unit;
FIGURE 20 is a perspective view of a roll of web with
a double pressure-sensitive tape attached to one end;
FIGURE 21 is an enlarged side elevation of a safety
lock mechanism to hold the splicing roll in position dur
high rates of speed and still permit web severing and
splicing to be carried out without changing the speed of
ing web severing;
the web or the provision of web-accumulation devices and
chambers.
A further object of the invention is to provide such an
apparatus which is compact and can be carefully con
FIGURE 21;
trolled to permit web severing and splicing operations and
FIGURE 22 is an enlarged plan of the mechanism of
FIGURE 23 is an enlarged side view of a device for
measuring the diameter of a new roll of web;
FIGURE 24 is an enlarged plan view of the device of
rewind operations with either surface outermost in the
FIGURE 23;
rolls of treated web. A still further object is to provide
FIGURE 25 is an enlarged side view of a web-aligning
such an apparatus which enables the coating of the web 55 device;
to be carried out at a high degree of vacuum without the
FIGURE 26 is an enlarged plan view of the web-align
necessity of squeeze rolls or other constructions to bear
ing device of FIGURE 25;
against the web and maintain the reduced pressure. Still
FIGURE 27 is an enlarged side elevation of wrap roll
other objects of the invention will be apparent to those
and web-severing knife for the rewind unit;
skilled in the art from the following description of the
FIGURE 28 is a left-end elevation of the mechanism of
invention.
FIGURE
27;
The novel apparatus of this invention will now be de
FIGURE 29 is an enlarged section of the plunger
scribed with reference to the attached drawings which con
housing.
stitute a part of this application and in which like parts
FIGURE 301 is a side elevation showing the operating
are given the same reference numerals throughout the sev 65
cylinder, rack and gear mechanism for indexing the wrap
eral views or ?gures.
FIGURE 1 is an elevation of the entire automatic
rolls;
FIGURE 31 is a right-end elevation of the cylinder
rack end connection of the mechanism of FIGURE 30;
FIGURE 2 is a detailed side elevation (with parts in 70 FIGURE 32 (sheet 1) is a schematic flow chart show
apparatus for unwinding, splicing, coating, rewinding
webs;
section) of the unwind unit of the apparatus;
FIGURE 3 is an end elevation (with parts in section)
ing the relationship of the tachometers, pulse generators,
and general electrical circuits for operating the splicing
3,055,337
'4
and cutting mechanisms for the unwind unit and rewind
ticular seal is not shown here. Similar seals can be used
unit;
with all rotating shafts which extend through the casing.
The “Duraseal” Model RA, rotary, No. 55 facing No. 14
carbon bushing in 0 rings, manufactured by Durametallic
Corp., Kalamazoo, Michigan, can be used.
FIGURE 33 is a detailed perspective view showing the
tachometers connected to the web roll core and web idler
roller.
The outer ends of the U-shaped levers 91 are notched
Referring now to FIGURE 1 of the drawing, the en
and thus adapted to receive the ends of mandrel 98, of
tire apparatus is shown in elevation in outline and in a
the core 99 of the roll of web W. A ?uid pressure-actu
practical arrangement where the web rewind unit is placed
ated cylinder 100 is pivotally mounted by means of pivot
over the web unwind unit. This is merely a preferred
and not a necessary arrangement of the various units.
10 pins 101 attached to the lower end of each U-shaped arm.
The piston rod 102 from this cylinder has a clevis end
With reference to FIGURE 1 of the drawing, the
which is connected to a suitable pintle 103 on pivoted latch
apparatus comprises an unwind unit A, an elongated hous
104. This latch 104 is pivotally mounted on pintle 105
ing B connecting the unwind unit with a coating and dry
on the U-shaped arm. The latch extends around the end
ing unit C, and an elongated housing D connecting the
latter to rewind unit E.
15 of the core shaft and holds it in the curved notch during a
web transfer action.
The Unwind Unit
The web roll cores have cylindrical ?anges 106 mounted
The unwind unit A, while shown in outline in FIGURE
on the recessed outer ends of mandrel 98. One of the pair
1, is shown in greater detail in FIGURES 2, 3, 4 and 5.
of cylindrical ?anges on said mandrel is provided with an
It comprises an enclosed central vacuum chamber 50, the 20 inter?tting U-shaped or channeled annular ring 107 which
casing of which has end walls 51 and 52 provided with
consists of two L-shaped rings held together near their
door openings 53 and 54 which are closed by means of
peripheries by suitable screws or bolts (not shown). The
sealing doors 55 and 56, respectively. These doors, as
annular ring is adapted for rotation as a rim about the
shown in greater detail in FIGURES 15 and 16, have a
inter?tting ?ange. The ring can be adjusted and locked
central lug 57 protruding from their outer surfaces. A
horizontal pin 58 passes through each lug and through the
ends of spaced vertical levers 59 having their upper ends
in any angular position by means of a threadably engaged
thumb screw 108 having an enlarged head 109 and a
shank, the end of which shank extends into an annular
provided with a lug 60 which is attached to a shaft 61
groove 110 in a side wall of the ?ange 106. In the periph
which, in turn, is fastened to a link 62 having on one end
ery of the annular ring is a small permanent magnet in
pintle 63. The clevis end 64 of piston rod 65 inter?ts
sert 111 which coacts with suitable electrical pickups 112
with this pintle and the other end is attached to a suitable
mounted on the side wall (140 of the sheath frame), as
piston (not shown) in ?uid pressure activated cylinder 66
shown in FIGURES 2 and 3. The magnetic insert and
which has its lower end pivotally attached to a pintle 67
pickup sense the passage of the permanent magnet insert
on a bracket 68 attached to the wall of chamber 50.
at the time splices are accomplished. In so accomplishing
Openings 53 and 54 in the end walls of the central 35 splices between an expiring web roll and the leading end
chamber connect with an enclosed vacuum interlock web
of a new Web roll, it is essential that the splicing mech
roll receiving chamber 69 and with a vacuum interlock
anism be actuated when it is sensed that the leading end
core removing chamber 70. These chambers have door
of a new web roll is in a preselected angular (or circum
openings 71 and 72 in their outer respective end walls.
ferential distance) relationship with the machine elements.
The latter are provided wth pivoted sealing doors 73 and 40 The ?anges have tapered ends 113 which inter?t with the
74, respectively. These doors, as more clearly shown in
recess 114 in the end of an inter?tting chuck 115. This
FIGURE 4 and FIGURE 8, have a central'lug 75 pro
is shown more fully in FIGURES 5 and 5A of the draw
truding outwardly from the outer surface. A pin 76 ex
ing. The ?anges on the cores also have a spring-pressed
tends through this lug and through Y-shaped yoke 77 hav
detent 116 which looks into a hole 117 on the chuck which
ing radial arms 78 and 79 and lateral arms 80 and 81 as. U! will be further explained below.
through which passes vertical shaft 82 journalled in suit
able bearings 83 and 84 which bearings are fastened by
Web roll receiving chamber 69 is also provided with a
device for measuring the diameter of a new web roll.
means of bolts 85 to the end wall of the respective outer
This device consists of a roller 118 rotatably mounted in
chambers. The other arm of the Y-shaped yoke 77 has
a clevis 119 which is secured to the end of cylindrical
a slot 86 which engages the end of bolt 87 pivoted at 50 shank 120 in the upper side of which is machined a series
one end on a bracket 88 fastened to the end wall adjacent
of gear teeth 121 forming a rack. The rack-shank is
the edge of the door. This bolt is threadably engaged
slidably engaged, in a near-horizontal position, in two ball
with a handle 89 that extends across the slot. The doors
bushings 122 which are mounted to a ?rst vertical wall
123 of a bracket 124 which has a second vertical wall
have a flat portion which overlaps the flat surface of the
Walls adjacent the door openings. If desired, suitable 55 125, at right angles to the ?rst, having a rear face 126
gaskets such as tubes, 0 rings, strips of resilient material,
which mounts against the side of the end wall 51 which
e.g., rubber or other material, can be ?tted into grooves
is in the receiving chamber 69 (see FIGURE 2); the
on the doors in order to form a more perfect seal.
bracket 124 is located centrally between the pair of
Web roll receiving chamber 69 is provided with an
U-shaped arms 91. The measuring device is thus mounted
opening 90 which is connected to a suitable vacuum pump. 6 O such that the axis of the cylindrical shank 120 is disposed
This chamber is provided with U-shaped arms 91 having
their upper inner ends journalled on a shaft 92 mounted
on suitable bearings attached to the frame of the appa
radially in respect to a newly introduced web roll W.
The rack-shank is urged radially toward the web roll
axis by a spring 127, thus the roller 118 will lie against
the periphery of the web roll and the position of the
ratus in any practical manner. As shown in FIGURE 17,
the outer end of this shaft has keyed thereto a crescent 65 shank will be a measure of the web roll diameter. The
shaped gear 93 which meshes with rack 94 attached to
device is further provided with a pinion 128, in driving
clevis 95 on the end of piston rod 96 which is in turn con
engagement with the rack; the shaft 129 for this pinion
nected to a piston (not shown) in the roll transfer ?uid
is journalled in bearings 130 which are secured to the
pressure-actuated cylinder 97. The latter is attached to
?rst vertical wall of bracket 124. At the far end of shaft
the frame for the apparatus in any suitable manner and 70 129 and coupled therewith is the rotor shaft 131 of a
is provided with operated valves, controls and connections
rotary switch 132; the stator of the switch is secured to
to a suitable source of ?uid pressure.
the bracket 124. The switch rotor (not shown) is con
A seal can be provided on shaft 92 at the point where
tinuously rotatable, having a single contact blade on the
the shaft emerges from the casing. Suitable seals are
rotor adapted, upon being rotated, to make successive
well known and to eliminate unnecessary detail, a par 75 electrical contact with each of a plurality (e.g., 40) of
3,055,337‘
5
6
stationary contact members (not shown) in the stator.
The position of the switch rotor then will be established
.
.
ating valve controls and with connections to a source of
fluid pressure, e.g., a tank of compressed air.
On the inner side of each yoke 144 and fastened thereto
are gears 163. These gears mesh with pinions 164 on
the ends of horizontal drive shaft 165 journalled in suit
able bearings 5166» in side walls 139 and 140 of the inner
when a new web roll is placed in the U-shaped arms 91
and the rotor position will be a measure of web roll
diameter.
Central vacuum chamber 50, as will be apparent from
the drawings, embodies a casing with welded side walls,
sheath frame. Fixed to the shaft between the said walls
are spaced sprockets 167 driven by chains 168 which like
wise engage sprockets 169 keyed on shaft =170 journalled
in bearings 171 in the side walls of the sheath frame.
end walls and a bottom plate 133. It also has a top plate
134 provided with an opening [135 for passage of a web W.
This plate can be welded, bolted or otherwise ?rmly at
tached to the side and .end walls. The end walls have
welded thereto four heavy brackets 136 which are welded
This shaft extends through a bearing 172 in a side wall
of the casing.
to or otherwise ai?xed to a heavy welded inner sheath
frame 137. This frame has two end walls 138 which are
In the central upper part of side walls 130 and 140
there are ?xed stubshafts 173. Levers 174 are pivotally
spaced a short distance from the inner end walls of the 15 mounted on these \stubshafts. The bottom ends of these
chamber. The upper part of these walls is also ?rmly
levers contain bearings (not numbered) in which is
attached to the inner walls of the casing or chamber.
journalled the shaft ends 175 of the large splicing roller
Between the end walls of the inner sheath are two side
176 around which the web from the web rolls passes.
walls .139 and 140. The central part of these side walls
Fixedly mounted in bearings 177 in the pivoted levers a
has a depending trapezoidal central segment. This sheath 20 short distance from ‘the shaft ends of the roller is shaft
frame serves as a support for the various drive shafts and
178 for an idler roller 179. Collars 180 are placed be
tween the levers and the ends of the idler roller.
pivoted yoke of the web and roll handling mechanism.
Journalled in a suitable welded collar 141 in the central
‘Belts 155 ?tted on pulleys 154 for driving the web
lower part of the trapezoidal segment of each side wall
roll cores ?t into small pulleys 181 keyed on shafts .182
of the sheath is a large stubshaft 142 on which is jour 25 extending through bearings 183 in the central part of the
nalled bearing block 143 constituting the central part of
side walls of the casing. Keyed to these shafts outside
yoke 144. This yoke has an upper and a lower arm be
the casing are pulleys 184 which {are driven by belts 185
engaging pulleys 186 keyed to shafts 187 of driving elec
tween the ends of which are bearing blocks 145. As
shown in FIGURE 5, this block has a pair of antifriction
tric motors 18% mounted on brackets 189 which are
bearings 146 which engage the bearing surface of a sleeve
fastened to the casing.
Sheath frame 137 also supports a web-severing knife
147 inter?tting with the chuck shaft 148.
The outer end of this shaft is recessed and spring 149
surrounds the recessed end 150 and ‘abuts the shoulder
onthe shaft and the inner end of surrounding sleeve 147
adjacent the bearing block. The sleeve has an extension 35
151. The outer end of the chuck shaft has a collar 152
which is held on by means of nut 153 having threaded
engagement with the threaded end of the shaft. Keyed
to sleeve 147 is a pulley 154 which is driven by belt 155,
as will be further explained below.
Surrounding collar 152 is a spider 156 having inwardly
extending ?ngers adapted to engage the inner face of the
collar and disengage the chuck from the ?ange on the
and attendant operating mechanism.
This knife 1190
(having a serrated edge) and mechanism as shown in
FIGURES 2, 6, l8 and 19', is ?xed between the ends of
pivoted levers 191 keyed to shaft 192 journ-alled in bear
ings ‘195 ?xed in side walls 139 and 140 of the sheath
frame. Attached to one end of the shaft extending be
yond a side wall is lever 194 having a pivot pin 195 inter—
?tting with clevis 196 ion the end of the piston rod 197
on ?uid pressure-actuated cylinder 198. This cylinder is
provided near its center with a pintle 199 which is jour
nalled in suitable arms 200 on bracket 201 fastened to an
outer side wall of the sheath fnarne.
This cylinder is
provided with valves, controls and connections to a
lower rollers 157 having threaded shafts 158 extending 45 source of fluid pressure whereby the knife can be actu
ated at the proper time.
through holes (not numbered) in each of the two legs of
web roll core.
Spaced from the collar are two cam fol~
the spider, said shafts being secured in position by means
The levers for the knife have about midway between
the latter and the pivot point an integral lateral arm 202
of nuts 159. ‘Piston rod 160 connected to this spider
having a curved slot 203. Stop bar 204 having its outer
passes through bearing plate ‘161 mounted on the outer
side wall of the casing or vacuum chamber. The piston 50 ends ?xed to the side walls of the sheath frame, as shown
in FfGURE 18 extends through this slot and coacts there
rod is attached to a piston (not shown) in ?uid pressure
with to limit the terminal position of the knife. A re
actuated cylinder 162 which is also ?xed to said bearing
silient (e.g., rubber) bumper 205 is fastened in the outer
plate. The fluid pressure-actuated cylinder 162 is of the
end of the curved slot 203.
double-acting type. Referring to FIGURE 5, the spring
Associated with this knife are two mechanisms which
149 normally urges the end of the chuck shaft 148 into 55
aid in severance of the web and in splicing of the severed
abutment with the cylindrical ?ange 106; however, as an
added safety measure and during the period when a .core
trailing end from an exhausted core to the leading end
of a new web roll. The ?rst of these mechanisms is a
99 is present, the cylinder 162 is subjected to ?uid pres
means for moving the splicer roll and the web traveling
sure in its head end; the piston rod 160 is thus held fully
inward (in a chuck-to-?ange 106 engaging direction). 60 around its surface against the new r-oll. This is accom
plished by means of a fluid pressure~actuated cylinder
This does not mean that the rollers ‘157 continuously
206 having an eye 207 on the outer end. Pin 208, a?ixed
engage the outer face of collar 152; with the piston rod
to bracket 209, extends through the eye and serves as a
160 thus held in its fully inward position, the spider 156
pivot point. The bracket, as shown in more detail on
is preadjusted axially in respect to the piston rod 160
such that a clearance of 1/16 to 1A2 inch exists between the 65 FIGURE 6, is attached to the center of upper cross
‘periphery of the rollers 157 and the outer face of collar
152. Thus, the spring 149 holds the chuck “in,” but if
the spring should fail, the chuck shaft 148 cannot move
out ‘by more than 14; inch and a core will not fall out of
a chuck.
>
-
The piston rod 160‘ is keyed, in respect to the walls,
to avoid rotation of the spider; thus, the spider has its
open sides disposed such that the collar i152 and chuck
shaft 148 can pass through the spider when the yoke 144
is indexed. This cylinder is provided with suitable oper
plate 210 extending between and ?xed to the sidewalls of
the sheath frame. Piston rod 211 extending from a pis
ton (not shown) in the cylinder has on its outer end a
clevis 212 through which, and through lug 213 on lower
70 crossplate 214, there extends a pivot pin 215. - The ends
of crossplate 214 are fastened to levers v174, which hold
the shaft extending through splicing roll 176.
Referring to FIGURES 2, 6 and 7, a part of this
mechanism for moving the splicing ‘roll includes a cam fol
75 lower roll 216 mounted on shaft 217 extending between
3,055,337
7
‘ earing brackets 218 mounted on arms 174 and protrud
tacts the annular cage and is guided by means of collar
ing beyond its back edges. Cam 219 contacts with the
243 which is fastened to the casing by means of screws
244 or other suitable fastening means. The outer head
of the plunger is curved to provide a cam surface. Dur
follower roller.
This cam is ?xed to horizontal shaft
220 j‘ournalled in and extending between bearings 221
in the side walls 139 and 140 of the sheath frame. In
FIGURE 7 there are shown on a larger scale details of
the relation of this cam to the arm which moves the arm
ing the period when the roller 245 lies against the curved
end of plunger 242, it depresses the plunger in respect to
casing 232, in effect, driving the cage 240 and the two
rollers 241 su?iciently far into the divergent part of
the internally tapered portion of casing 232 that the lock
and splicer roll. Fixed on this shaft 220 is a pulley 222
carrying belt 223 which similarly engages a pulley 224
?xed on a parallel drive shaft 225 which extends through 10 lever 234 cannot assume a locked position but is free to
bearing 226 in said sheath frame. The ends of this shaft
?t into coupling 227 in which is also ?tted the drive
shaft from combined motor and reducing gear box 228.
At the opposite end of shaft 225 is secured the rotor
(not shown) of a switch 229; the stator (not shown) of
the switch is secured to side wall 139. The switch is of
the type described above. Each of its stationary con
tact members is connected to a corresponding stationary
move axially in either direction. Roller 245 is normally
in contact with the end of plunger 242 at all times except
when the arm 246 starts to swing, the arm then being
actuated at the same time that the shaft 192 starts to turn
to drive the knife. When roller 245 departs from the
plunger, the spring 238 urges the cage 240 and the rollers
241 toward the convergent end of the taper thus effective
ly locking the lock-lever 234 and preventing it from
moving in the same direction. The lock-lever 234 is
con-tact member in an identical switch (not shown) on
the roll diameter measuring device. The two switches are 20 free, however to move toward the new web rolls; it does
so when the splicer roll is moved into contact with a
suitably connected to a power source and thence to the
new Web roll whereupon the lock-lever is snubbed or
motor in the combined motor and gear box 228, the
whole being adapted to energize the motor and thus
locked thus preventing the splicer roll from bouncing or
cause the shaft 225 and the rotor of the switch 229 to
being pulled away from the web roll due to normal ten
rotate until the rotor reaches an angular position corre 25 sion in the web or tension occasioned by the shock of
sponding to that of the switch on the roll diameter meas
cutting. The lock-lever then holds the splicer roll ?rmly
uring device. In effect, this causes the cam 219 to as
in contact with the new web roll until such time as the
sume a predetermined angular position in respect to the
cam follower roll 216, thus the cam causes the lever 174
splice has been accomplished and the knife has been
withdrawn, whereupon the roller 245 again engages and
to swing the splicing roller 176 to a predetermined posi 30 depresses plunger 242, in effect, releasing the splicer roll.
This is accomplished by the turning of shaft 192 which
tion such that, when the new web roll is later transported
into the yoke 77, the periphery of new web roll will be
just clear (about 14 inch) of the splicer roll. The splicing
actuates the knife. The arm 246 is fastened to block 247
which in turn is keyed or otherwise fastened to the knife
roll must be so positioned for several reasons. The di
actuating shaft 192.
ameters of the new web rolls vary from roll-to-roll and 35
In the unwind unit, referring to FIGURES 2 and 6, it
the splicing roll, upon being driven by cylinder 206 for
is desirable to lock the yokes into position at various
the purpose of making a splice, must come into splicing
times; for example, during normal winding and during
contact with the new web roll in a short known time in
web-severing operations. This is accomplished by means
crement and, further, must always close the 1A1. inch gap,
of a plate 248 fastened near the end of the yoke arm
for different Web rolls, in substantially the same known 40 on the outside. A cup member 249 having a tapered
time increment regardless of roll size.
recess 250 is welded or otherwise fastened to this plate.
After a splice has been made, the cam and switch 229
The tapered end 251 of piston rod extension 252 ?ts into
automatically return to their starting position in anticipa
the recess. The piston rod threadably engaged to the ex
tion of later accommodating a new roll. While the
tension passes into ?uid pressure-actuated cylinder 253
switch resets, the splicing roll and its support arms swing,
mounted in support member 254 in the side wall of the
by gravity and web tension, to a position such that a
casing. The cylinder is provided with a piston, valves,
maximum gap exists between the splice roll and the web
controls and connections to a source of ?uid pressure.
roll in anticipation of the installation of a new Web roll
The large gears 163 fastened to yokes 144 are for the
in the web roll receiving chamber. During the period
purpose of slowly rotating the yoke 180° from web-re
when the cam is driving the splicing roller 176 to a pre
ceiving position to web-feeding and core-removing posi
determined position, the cylinder 206 offers no restraint
tion. During splicing and rotation of the yoke, however,
to the lever '174 since its associated valve means (not
the web is continuously unwound.
shown) causes the head end of the cylinder to be open
The core-removing chamber 70 is similar in construc
to the atmosphere outside the vacuum chamber (the rod
tion to the web roll-receiving chamber 69, has a similar air
55 removal opening and contains the same U-shaped arms
end is always open to the atmosphere).
The second of the two associated mechanisms is a
and parts as in the latter, and for the sake of brevity the
lock bar assembly which is shown in greater detail in
description ‘and reference numbers will not be repeated.
FIGURES 21, 22 and 29 (see also FIGURE 4). This
The outer doors 73 and 74 are similar in construction
assembly consists of a double U-shaped bracket 230 which
to the inner doors except that the doors are hinged on
is bolted to stop bar 204 near its center. The lower part 60 the side, rather than on the top. The operation of these
of this bracket has arms 231 which extend around and
doors will be described below in explaining the opera
are pivotally connected to plunger casing 232 by means
tion of the apparatus and controls.
of pins 233. Lock-lever 234 (rectangular cross-section)
The Coating Unit
extends into this casing. The casing 232 has an internal
pro?le formed by two parallel walls (shown in FIGURE 65 The web (W) passes upwardly from central vacuum
29) and two walls having parallel sections at either end
chamber into cupola 255 where it passes over web aligner
joined by a tapered section at the center. The bottom
roller 256 of an aligning device which keeps it in a prede
end of this lever is connected by means of pin 235 to
termined path without restraint. The device consists of a
lug 236 on bracket 237 which in turn is fastened to cross
pair of 'aligner rolls 256 and 257 which are rotatably
70 mounted on shafts 258 and 259 which are supported in
plate 214 which extends between levers 174.
In plunger casing 232 and surrounding the lock-lever
U-shaped frame 260; this frame is joined to and sup
ported by a vertical shaft 261 which is rotatably car
is a spring 238 which abuts end plate 239 of said casing,
ried in two bearings 262 mounted on a frame 263 which,
and annular bearing cage 240 containing rollers 241
in turn, is mounted to the upper face of the vacuum cham
which contact with the tapered inner walls of the plunger
casing and with the lock-lever 234. A plunger 242 con 75 ber 50. On the underside of the U-shaped frame is a
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