US2992786A - Toilet paper winding apparatus - Google Patents

Description

July 18, 1961 scusA 2,992,785

. TOILET PAPER WINDING APPARATUS Filed March 19, 1958 4 Sheets-Sheet 1 LUIGIA SCUSA,Exccutrixdjhe ESiGfBdLINO SCUSIMDEG D.

'- INVENTOR @ZXM ATTORNEY July 18, 1961 scusA TOILET PAPER WINDING APPARATUS 4 Sheets-Shet 2 Filed March 19, 1958 LUIGIA SCUSA, Executrix of ihe Esiufe of LINO SCUSA, DEC D.

INVENTOR ATTORNEY L. SCUSA TOILET PAPER WINDING APPARATUS July 18, 1961 4 Sheets-Sheet 3 Filed March 19, 1958 FIGEq' FIG.4

LUIGIA SCUSA Execufrix 0f the Estate of LINO ScusA,DEc'o.

1 INVENTOR BY {(3 Z ATTORNEY July 18, 1961 L. scusA .TOILET PAPER WINDING APPARATUS Filed March 19, 1958 LUIGIA SGUSA, Executrix of the Estate of Lmo ScusA,.DEco.

INVENTOR ATTO RN EY United States Patent""() Filed Mar. 19, 1958, Ser. No. 722,617 13 Claims. (Cl. 242-64) This invention relates to improvements in machines for forming a plurality of paper cores on long mandrels journaled in a reel having a plurality of mandrels and for winding rolls of toilet tissue on the cores. More specifically, the invention is an improvement on the auxiliary bearing support apparatus of Lino Scusa Patent 2,334,793.

The principal object of the invention is to provide a support for the mandrels at the center thereof whereby the long mandrels may be rotated at high speeds without whip or lateral vibration.

A more specific object is to provide a support for the mandrels in a machine having a plurality of stations at each of which a different operation is performed on a different mandrel of the reel including a station at which the support may be automatically released from the mandrel for stripping the rolls from the mandrel.

Further objects are to provide a support which prevents vibration of the mandrels in any lateral direction, to provide a support which is released from the mandrels at only one station, and to provide, in an automatic machine, safety means to insure that the mandrels cannot be damaged.

Other objects and advantages will more fully appear from the following description taken in conjunction with the accompanying drawings, in which:

FIGURE 1 is a diagrammatic, longitudinal sectional view of a machine embodying the present invention;

FIGURE 2 is an enlarged fragmentary sectional view of the support portion of the machine of FIGURE 1, on the line 22 of FIGURE 3;

FIGURE 3 is a sectional view of the support on the line 33 of FIGURE 2;

FIGURE 4 is a fragmentary sectional view of one of the support arms and adjacent engagement pawl, on the arbitrary line 44 of FIGURE 2;

FIGURE 5 is an enlarged side elevational view of the engagement safety switch of the machine of FIGURE 1 and adjacent parts;

FIGURE 6 is an enlarged sectional view of the disengagement latch of said machine on the line 6-6 of FIGURE 7; a portion of. the latch being shown in side elevation; v

FIGURE 7 is a fragmentary front elevational view of the latch of FIGURE 6; and

FIGURE 8 is a sectional. view of the latch on the line 3-8 of FIGURE 6.

In the toilet .tissue roll winding machine illustrated in FIGURE 1 of the drawings, andmorefully described in companion application Serial No. 722,533, filed March 1.9,. 1958, andnow abandoned, a reel 10 is shown, supported on a shaft 11 which is journaled in the sideplates of theframe 12 across the machine. The reel has arms 13 supporting a plurality, here. five, of mandrels 14 shown positioned, respectively, at a core winding station, Sta #1; a core m-oistening station, Sta #2; a tissue winding station, Sta #3; a mandrel orienting station, Sta #4; and a roll stripping or ejection station, Sta #5.

A web of paper 15, for winding into cores, is fed from a large roll 16 by feed rolls 17--17 over a table 18 and cut transversely by knives 1919 into suitable lengths for the cores. A glue roll 20 and a drop roll 21 also act as feed rolls to lead the paper 15 past slit knives 22-42, which slit the paper into strips of suitable width,

and on to the mandrel 14 at the first station. Suitable means 23 and 24 are provided for lifting and releasing the drop roll 21 so that glue is applied to the paper over the last portion only of each strip.

It will be understood that paper gripping means, not shown, are provided on the mandrels 14, and means, also. not shown, are provided for rotating the mandrel 14. Heating pads 25 and suitable means 26 and 27 for swinging the pads against the cores at the first station and for releasing them therefrom are provided.

At the second station a moistening roll 28 is provided. for moistening the cores at this station.

At the third station, a web of tissue 30 is led over a straightening rod 31 from a large roll 32 by means of a feed roll 33, perforations across the web being formed by the perforating roll 64. A movable table 35 is piv-. otally supported in frame 12 at 36, and means, including a pneumatic cylinder 37, are provided for lifting the table as the rolls are wound on the cores. Slit knives 38, on the table 35, slit the tissue into strips which are wound at high speed on the cores. A counting mechanism, not shown, slows the tissue feed mechanism to a very slow rate when the desired number of sheets have been wound on the rolls X and the reel 10 is then turned so that each mandrel moves to the next station.

A knife 40 is released at this time by control mechanism, not shown but including a latch 41, to drop and sever the web 30 as the rolls X move to the fourth station. The severed web 30 falls on the moistened cores moving from the second station and adheres thereto for further winding at the third station.

At the fourth station the rolls X are rotated for several turns, a pad 43 securing the moistened ends of the tissue strips to the roll. At this station, also, the mandrel '14 is oriented, by means not shown, so that the gripping means of the mandrel are properly oriented in the ma-' chine for receiving the leading edge of the core paper strips at the first station.

At the next advance of the reel 10 the rolls X are brought to the fifth or ejection station and are there stripped from the mandrel 14.

As thus far described, the machine is the same as that of the aforesaid companion application.

It will be apparentthat the number of rolls which can be wound simultaneously on each mandrel is limited only by the rigidity which can be given to the mandrel. In the machine of this application a pair of axially aligned paper supply rolls 16 are used, and a pair of rolls 32, each pair being laterally spaced in the machine so that the novel auxiliary bearingsupport, now to be described, may give the mandrels additional bearing support at the center of each mandrel, and the length of the mandrels,

plate 48 on shaft 11 is secured to flange 45 by the five evenly spaced bolts 49, the plate being spaced from the flange by the spacers 50 and the five angularly spaced spacing lugs 51 on the flange, as shown in FIGURES 2 and 3.

Five pairs of support arms 54-55 are piovtally supported on the cam plate 48 by stud shafts 56 secured in the plate. One arm 54 of each pair is a radius contact arm having a curved portion 57 adapted to fit around a, rounded or journal portion of the mandrel 14. The other arm 55 of the each pair is a roller contact arm and has rollers 58 mounted on shafts 59, as shown in FIGURES The flange has a 2 and 3, for engagement with the same journal portion of the mandrel. 'It will be noted that the roller contact support arm 55 lies beneath the mandrel 14- at the third station where the mandrel is rotated at its greatest speed. The arms 54 and 55 are supported in the space between plate 48 and flange 45 and one of each pair lies on either side of each spacing lug 51, the arms being suitably notched to close about the lug.

The inner ends of the arms 54 and 55 are provided with meshing spur gear teeth as shown so that each pair may open and close in unison about their respective pivot shafts 56. A latch engaging pawl lever 60 (FIGURES 2-and 4) is pivotally secured by a shouldered stud 61 to each radius contact arm 54 which is the trailing arm of each pair as said reel is turned. The pawl 60 comprises a latch contacting lever portion terminating in a hooked end 6011 and a fiat plate portion 60b overlying the arm 54 and which terminates in a locking hook 60c.

Five angularly and equally spaced, pulley-like, spring retainers 63 are secured to the outer face of the cam plate 48 on the opposite side from and midway between the pairs of arms 5455. The retainers are rotatably supported on the plate by shouldered studs 64 and are retained on the studs by suitable screws and washers. Similar spring retainers 65 on lock arms 54-55 are supported on arms 55 by the shouldered studs 66 and on arms 54 by the shouldered studs 61. The retainers 65 are radially more distant from shaft 11 than are the retainers 63.

Radially intermediate the retainers 63 and 65, the portion 60b of each pawl 60 is provided with a spring retainer 68 carried on a stud 69, and retained by a suitable screw and washer. A continuous, or garter spring 70 is wound about the above retainers, as shown in FIGURE 2, to urge the pairs of arms 54 and 55 together and to urge the locking hooks 60c of the pawls 60 to engage with the studs 66.

A latch support rod 72 is secured to frame 12 of the machine and extends across the machine in front of the auxiliary bearing support device above described. A saddle 73, having an upstanding boss 74 (FIGURES 6 and 8) is secured to rod 72 as by welding.

The latch body or frame 75, shown as constructed of plate members welded together, is pivotally supported. on a pin 76 secured in the two sideplates of the body 75 and through a hole 77 'in boss 74, the interior of the body being hollow as shown to receive the boss. The body 75 is capable of a limited rocking movement as indicated in FIGURE 6 from the position shown in full lines to that shown in broken lines. The hole 77 is slotted as shown so that as the body 75 is rocked counterclockwise as seen in FIGURE 6, the body may move rearward for a short distance. The pin 76 is normally held in the forward end of the slot 77 by a spring 78 held in a hole in boss 74 by the plug 79. A set screw 80 in the lower end of the body may be adjusted to limit the rocking movement in one direction by its contact with the rod 75. A spring 81 connects a pin 82, projecting from body 75, with a boss 83 secured to the saddle 73 and resiliently holds the rear end of the latch from rocking downward A latch slide arm 85 is supported in a slide way 86 in thebody 75 and nonnally projects rearward so that its hooked rearward end 85a is engageable by the hook 60a of the latch pawls of the support as reel 10 is turned as indicated in broken lines in FIGURE 6. A pin 87 is secured at the forward end of the slide 85 and projects upward through an appropriate slot 88 in the body 75. The slide arm 85 is normally spring pressed forwardly so that the pin 87 in the top of the body 78 is at the forward end of the slot 88.

To conserve space, the compression spring 89 is contained in a depending tube 90 secured to the body 75. A flexible steel ribbon 91 is secured to the forward end of the slide 85 and is led down over a pulley 92. on a shaft 93 fixed in the. sidewalls of body 75. The other end 4 of the ribbon 91 is secured to a piston 94 in the tube 90, the spring 89 being compressed between the piston 94 and an annular plug 95 screwed in the top of the tube.

The slide 85 is normally prevented from moving forward by a trigger 96 pivotally secured in the body by a pin 97 therethrough. The upper arm of the trigger 96 is engaged in a notch 85b in the underside of the slide 85 and is biased therein by the spring 98 contained in a well in the trigger 96. The lower arm of the trigger is engageable by a trigger actuating arm 99 secured to the rod 72 when the latch body is rotated counterclockwise as shown in FIGURE 6. r

The operation of the auxiliary bearing support and its associated latch will now be apparent.

The operation of the garter spring 70, which in this instance is more conveniently used than separate springs for each pair of arms, biases the arms 54- and 55 to closed position. The position of the spring retainer 68 between retainers 63 and 65 assist in this closing action. Arms 54 and 55 move in unison about their pivots 56 because of the intermeshing spur gear teeth with which they are equipped. Moreover, each pair of arms is locked together by the hook 60c of the pawl engaging with the shouldered stud 66 on arm 55, and the pawl is biased to its closed position by the spring 70. It will be noted also that the plate portion 60b of the pawl lies in the plane of the cam plate which has a camrning edge 48a which assists in the closing of the pawl 60.

Upon rotation of the reel between cycles of the tissue Winding machine, the pawl 68 of the pair of support arms moving from the fourth to the fifth station becomes engaged with the latch slide 85 as indicated in broken lines in FIGURE 6. The hook 60a of the pawl engages hook 85a of the slide and pulls the slide 85 rearward until the trigger 96 engages the end of notch 85b in the slide as shown in full lines in FIGURE 6. Pawl 60 is now prevented from moving further rearward with the support arms 54 and 55.

Spring 81 of the latch resists any rocking movement of the latch and is sufliciently strong to resist the downward movement of motion of pawl 60 and overcomes the resiliency of spring 70 as the pawl flange 60b is rotated about the pin 61, unlocking hook 600 from about pin 66.

As the arms 54 and 55 are moved to the fifth station, the engagement of hooks 60a and 85a (FIGURE 2) rotate arm 54 about its pivot 56. Arm 55 is rotated about its pivot 56 by the action of the gear teeth on the arms. When reel 10 is in register, arm 55 has come to rest against the pin 64and the arms 54 and 55 are spread wide, allowing the ejection of the rolls X from the machine.

Upon turning'the reel 10 again at the end of the next cycle, engagement of the arm 55 with pin 64 prevents further opening of the arms and pawl 60 is carried downward. The rear end of the latch is accordingly carried downward until the trigger 96 is engaged by the arm 99 and the slide 85 isreleased. Until the trigger 96 releases the slide, the slide 85 and latch body 75 move rearward as they are tilted, the pin 76 moving rearward in the slot 77. When the slide is released by the trigger 96, spring 78 restores the pin 76 to its forward position in slot 77 and slide 85 is carried further rearward and downward until pawl 60 leaves it at the position indicated 85a" in FIG- URE 6.

As soon as pawl 60 is released by the slide 85, spring 70 closes the arms 54 and 55 against the now empty mandrel and hook 600 again locks around pin 66. Slide 85 is drawn forward again by the spring 89, and the latch body is rotated back again to its normal position by the spring 81. It will be noted that the normal position of the body 75 and hence the slide 85 may be regulated by the set screw for best receiving the next pawl 60.

A switch 100 mounted on a plate 101 attached to the latch body has. its operating button 102 engaged by the pin 87 only so long as pawl 60 engages the slide as shown in full lines in FIGURE 6. This engagement maintains the contacts of the switch apart or open. The switch 100 is wired to stop the machine when closed, as, for example, in series with a switch which is closed during operations at the fifth station, and in circuit with an overload release clutch similar to that shown in Lino Scusa Patent 2,712,372.

During rotation of the reel the slide 85 is in the position indicated at 85a or 85a" and the pin 87 therefore is out of engagement with button 102. During this time, therefore, or in the event the pawl 60 fails to properly engage the slide 85, should the stripping at the fifth station commence, the machine is halted.

Another safety device is shown in FIGURE 5. A normally open switch 105 is secured to a support plate 106 which is pivotally secured to the frame 12 of the machine at 1-07. A fiat spring 108 is secured to the switch and bears against a rod 109 secured to frame 12 and is normally out of contact with operating button =110 of the switch so as to leave the switch open. The switch is wired to stop the machine when closed, as for example, in a circuit with the overload release clutch mentioned above.

A rigid operating arm 111 is secured to the support plate 106 so as to be normally engaged by the pawl 60 when the arms 54 and 5 5 of the support are fully closed about the mandrel at the first station. Another resilient operating arm 112 is disposed in the path of the core paper and is attached to the switch 105.

It will now be seen that, if the pawl 60 is not in engagement with arm- 111, the passing of the core paper will depress the flexible arm 1'12 and tilt the switch 105. Should the support arms 54 and 55 not be closed, pawl 60 would not be engaged with the arm Mind the machine would be stopped. But if arm 111 and pawl 60 are in engagement, the passage of the core paper willfiex the arm 112 and the switch will remain open, being prevented from tilting by the rigid arm 111.

v While thereis herein described, and in the drawings shown, illustrative embodiments of the invention, it is to be understood that the invention is not limited thereto, but may comprehend other constructions, arrangements of parts, details and features without departing from the spirit of the invention. It is desired to be limited, therefore, only by the scope of the appended claims.

What is claimed is:

1. In a paper roll winding machine having a plurality of stations, and a reel journaled and rotatable in said machine and having a central longitudinally disposed shaft and a plurality of longitudinally disposed mandrels for successive registration at said stations; the combination of an auxiliary bearing support for said mandrels comprising arm supporting means secured on said shaft intermediate the ends of said reel, a plurality of pairs of arms pivotally secured to said supporting means, each pair being adapted to swing apart and together in unison and, when together, to provide a bearing support about one of said mandrels, a lever pivotally carried on one of each of said pair of arms and projecting radially from said reel beyond said arms, locking means on said lever adapted to engage a portion of the other arm of said pair for locking the arms of said pairs together, spring means for swinging each of said pairs of arms together and for biasing each of said levers toward its locked position, and lever-engaging means secured in said machine outside of said reel at one of said stations for engaging and holding the end of said lever when the reel is turned, whereby one of said pair of arms is swung apart at said one station for removal of the rolls from the mandrel and said lever is released when the reel is again turned after removal of the rolls.

2. The auxiliary bearing support of claim 1 having cam means on said arm supporting means adapted to move said locking means to locked position when said lever is released by said lever-engaging means and said pair of arms is swung together.

3. The auxiliary bearing support of claim 1 having meshing gear means on each arm of each pair for swinging said pairs apart and together in unison.

4. The auxiliary bearing support of claim 1 having the lever carried on the trailing arm of each of said pair of arms whereby engagement of said lever with said lever-engaging means first unlocks said pair and then swings said pair apart when the reel is turned.

5. In a paper roll winding machine having a reel rotatable on a shaft and carrying mandrels thereon for successive registration at a plurality of stations including a roll ejection station and a core forming station, the combination of an auxiliary bearing support for said mandrels comprising arm support means carried on and rotatable with said reel, a pair of arms for each mandrel pivotally secured to said support means, each pair being adapted for swinging apart in unison from a closed position adapted to provide a bearing support about one of said mandrels to an open position adapted for removal of said rolls from the mandrel, a lever pivotally carried on the trailing arm of each of said pairs and projecting radially from said reel beyond said arms, each of said levers being provided with locking means adapted to engage a projecting portion of the leading arm of said pair to lock said pair in closed position, spring means for biasing said arms toward closed position and for biasing said lever toward locked position, and a lever-engaging latch secured in said machine radially outward of said reel at said ejection station for engaging and holding the projecting end of said lever, when the reel is turned, whereby each pair of arms is swung apart at said ejection station and said lever is released for return of the arms to closed and locked position when the reel is again turned after removal of the rolls.

6. The machine of claim 5 having safety means insuring the complete closing of said arms about the mandrel at said core forming station, comprising a normally open switch pivotally supported at said core forming station, resilient means normally holding said switch from turning and adapted to close said switch when said switch is turned, a first flexible operating arm secured to said switch and disposed in the path of the core making paper and adapted to turn said switch, and a second rigid operating arm secured to said switch and adapted to contact said projecting lever when said mandrel is in register at said core making station and thereby prevent the turning of said switch, said switch when closed being adapted to stop the machine.

7. In a paper winding machine having a reel, a plurality of mandrels longitudinally disposed on and carried by said reel, and a shaft journaled in said machine on which said reel is rotatable, the combination of an auxiliary bearing support for said mandrels comprising support means on said shaft, a plurality of pairs of arms pivotally secured to said support means, each of said pairs being adapted to provide a journal support for one of said mandrels, gear means on said arms for swinging each of said pairs apart in unison thereby releasing said mandrel, locking means carried by one arm of each pair and adapted to engage a portion of the other arm of the pair for locking said pair together, spring means for closing each of said pairs of arms about said mandrel and for biasing said locking means toward locked position, a lever projecting radially of the reel beyond said mandrel and connected to said locking means, and latch means supported in said machine in the path of said lever as said reel is turned, said lever being adapted to unlock said locking means and swing said pair of arms apart when engaged with said latch while said reel is turned.

8. The bearing support of claim 7 wherein said latch comprises a lever contacting arm, a body in which said arm is supported, said body being tiltable in said machine,

and spring means for resisting the tilting of said body when said arm is engagedby said lever.

9. In a paper winding machine having a reel, a plurality of mandrels carried by said reel, a shaft journaled in said machine, said reel being rotatable on said shaft, the combination of an auxiliary bearing support for said mandrels comprising an annular arm supporting member, means for securing said member to the shaft, a plurality of pairs of support arms pivotal ly secured to said supporting member, each of said pairs being adapted to provide a journal support for one of said mandrels, gear means on said arms for swinging each of said pairs apart in unison, thereby releasing said mandrel, locking means carried by one arm of each pair and adapted to engage a portion of the other arm of the pair for locking said pair together,

spring means for closing each of said pairs of arms about said mandrel and for biasing said locking means toward locked position, a lever projecting radially of the reel beyond said mandrel and connected to said locking means,

and 'latch means supported in said machine in the path of :2;

said lever as said reel rotates, said lever having a latch engaging hook and being adapted to unlock said locking means and swing said pair of arms apart upon engagement with said latch.

10. In a paper roll winding machine of the class described having a plurality of stations, a reel intermittently rotatable on a shaft and carrying mandrels longitudinally disposed thereon for successive registration at said stations, the combination of an auxiliary bearing support for said mandrels comprising an annular plate adapted to be secured to said shaft, 21 pair of support arms for each of said mandrels pivotally supported on the plate and adapted to swing together and apart in unison, bearing surfaces on said arms for journalling said mandrel therebetween, locking means pivotally secured to the trailing arm of said pair and adapted to engage a portion of the other arm for locking said pair together, spring means for closing said arms around said mandrel and operative when said arms are closed for biasing said locking means to locked position, a lever on said locking means for unlocking said pair and projecting radially from said reel, a stop for said arms at fully opened position, and lever contracting means independent of said reel adapted to arrest the outward end of said lever during rotation of said reel, whereby said a-rs are unlocked and opened fully at, at least one, station for removal of the rolls at said station, and said lever contacting means being resiliently supported in said machine, whereby said lever is released upon further rotation of the reel.

11. The auxiliary bearing support of claim 10, wherein said lever contacting means comprises a lever contact slide, a body adapted to slidingly support said contact arm, said body being tiltably secured in said machine, and spring means for resisting the tilting movement of said body.

12. The auxiliary bearing support of claim 11, wherein said lever is hooked at its projecting end, said lever contact slide has a cooperating hooked end for arresting said lever, spring means resisting the sliding of said contact slide toward said reel, latch means for preventing said sliding, said body being resiliently movable toward said reel when tilted, and trigger means for releasing said latch when said body is tilted.

13. The auxiliary bearing support of claim 12 having safety means for preventing removal of the rolls when said support arms are not fully opened, comprising a switch mounted on said body, and switch operating means on said lever contact slide adapted to operate said switch only when said slide contacts said lever and said mandrel support arms are fully open, said switch being normally adapted to stop the machine during removal of the rolls at said station.

References Cited in the file of this patent UNITED STATES PATENTS 2,385,691 Corbin et al. Sept. 25, 1945

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