US1817017A - Wrapping machinery - Google Patents

Description

Aug. 4, 1931. w. H. NoRToN WRAPPING MACHINERY Filed Nov. 1o. 1927 15 Sheetsf-Sheet 1 hm, NSI

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Aug. 4, 1931. w. H. NORTON 1,817,017

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WRAPPING MACHINERY Fied Nov. 10. 1927 l5 Sheets-Sheet 9 Allg 4, 1931. w. H. NORTON 1,817,017

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WRAPPING MACHINERY Fledl'ov. 10. 1927 l5 Sheets-Sheet 1l Allg. 4, 1931.

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Aug. 4, 1931.

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ZZA/)577123174 1 ya Patented Aug. 4, 1.931

UNITED STATES PATENT OFFICE WILLIAM H. NORTON, OF CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF NINETEEN TWENTY-FIFTI-IS TO .ARTHUR C. HUTCHINSON, OF BANGOR, WISCONSIN, AND SIX TWENTY-FIFTHS TO EARL S. YULE, OF SUMMER,

WISCONSIN Application filed November 10, 1927.

The invention relates to wrapping machinery.

One of the objects of the invention is to produce a mechanism for wrapping paper sheets about rolls of paper that are used in stores and other places for doing up packages and to provide means for folding over the projecting ends of such wrapping paper so that the ends thereof will lie snugly against the ends of the rolls, with means for holding the folded ends in close position against the ends of the rolls.

In paper mills such rolls of paper are prepared for the merchants, to be mounted in racks from which the paper may be unrolled as needed. It is desirable to prepare the rolls for shipment and storage to protect the rolls from dirt and damage. For this purpose, the rolls have heretofore been wrapped by hand in sheets of wrapping paper long enough to project considerably beyond the respective ends of the rolls. lt has been customary to apply glue or some other adhesive to portions of the inner faces of these wrapping sheets so that they will adhere to the circumference of the rolls, and after being thus secured the projecting ends have been folded over in a series of circumferential folds reaching from the periphery of the rolls inwardly toward the axial center, and then to apply a circular paper disc over the'folds, such discs being previously faced with an adhesive that will hold the discs and the folds to place. These discs tend to prevent any outward springing of the folds to be caught and pulled outwardly or torn or otherwise mutilated, and reach practically to the periphery of the. rolls. But this hand operation is slow and costly.

Various attempts have been made to do all of this work of wrapping and securing the rolls by machinery, but so far as this applicant is aware they have been unsuccessful, and there is nowhere any such device in use.

In applicants invention he provides a ltable that is automatically vertically adjustable as top sheets of paper are removed, upon which is placed a pile of paper wrap.- ping sheets with means for alternately ap- Serial No. 232,334.

plying adhesive to the front and rear ends of the top sheet, the roll is rolled upon the table in such a way that it first picks up the front end of the sheet, which, being glued, adheres to the face of the roll and carried around the periphery of the roll until it meets the adhesive at the other end of the sheet which also adheres to the roll, which is now completely covered by the wrapper, which extends, laterally beyond the ends of the roll. An over head belt travelling longitudinally of the machine, by its downward pressure, then carries the covered roll to another table, or pair of laterally adjustable tables or plates, where each end Vencounters a longitudinal series of hinged folding blades, that by the pressure of the roll itself in series upon the actuating mechanism, tilts each blade successively inwardly against the projecting ends of the wrapper, and fold after fold is made around the respective ends until a series of folds is made on each end, each blade first making an initial open fold, which, as the blade gradually reaches a vertical position against the passing roll converts the open fold into a flat crease, leaving but a slight tendency to spring outwardly. Then the roll is passed along by the belt to the heading device, provided with a male and a female die for cutting discs from a vertical sheet of paper stretched between the dies and held taut by a pulling mechanism below the dies. By suitable actuating devices the male die is then moved inwardly, cutting a disc from the paper sheet, that has previously been provided with adhesive, and carrying it to the end of the roll, where, for a short period the die rests and holds the disc to the end of the roll, before it retires, thus giving the adhesive an opportunity to set against the folds under pressure. As soon as the die retires the pulling apparatus pulls down another length of paper, and stops with another stretched sheet between the dies, the male die remaining in outward position meanwhile. Mechanism provided alternately moves the die and the pulling mechanism and stops each while the'other is in operation. The sheet from which the disc is cut passes to a rewinding apparatus that works synchronously with the other mechanlslns. The waste paper is thus dlsposed of 1n rolls `that from time to time are removed from nisms are arranged to Work harmoniously with each other and in "succession with the other mechanisms andfcoterminously with.

them as needed. The machine is arranged to wrap various lengths of rolls, and .for thls purpose the mechanisms for fold1ng and applying the discs are 1n duplicate and laterally adjustable. t

Various objects of the inventlon will also be pointed out as the specification proceeds.

In\ the drawings,

Fig. l is an elevation of the right slde of the machine. v

Fig. 2 is an elevation of the rear portion of the left side of the machine.

Fig. 3 is an elevation of the rear end of the machine, portions of the rear end being omitted.

Fig. 4 is a plan of the forward half of the structure, a portion of the table that carries the wrapping paper being broken away to show some of the operating structure below.

Fig. 5 is a plan of the rear half of the structure, showing the folding devices for folding the projecting ends ofthe wrapping paper and the heading mechanism for cutting out the circular discs to be glued to the wrapped ends of the "rolls and the means for gluing the same to the folded ends of the wrapper paper, portions of the structure being omitted for clearness.

Fig. 6 is across sectional view in elevation of the front portion of the machine,

y taken on the line 6-6 of Fig. 4.

vso

Fig. 7 is a cross section in elevation of the rearward portion of the machine, taken on the line 7--7 of Fig. 5.

Fig. 8 is a cross section inelevation on the line 8 8 of Fig. 7.

Fig. 9 is a detall in cross section in elevation on line 9-9 of Fig. '7 looking forward toward the header mechanism and showin the mechanism fo-r shifting the folder lades and the posts for supporting the header mechanism, the folder blades bein in non-operative position.

ig. 10 is a detail of the same parts as are shown in Fig. 9, with the folder blades in changed position or against the ends of the roll of paper being wrapped. i

Fig. 11 is a detail of thev folder blades and means for su porting them, taken on the line 11-11'of ig. 12.

Fig. 12 is a transverse view in elevation of the support for the folder blades shown in Fig. 11 and a portion of the mechanlsm for shifting the blades toward the ro'll.

Fi 13 1s a vertical cross section of the clutc mechanism for operating the header male die toward and from the end of the roll of paper, the clutch being out of engagement for operating the header mechanism.

Fig. 14 is a View of the same parts as are shown in Fig. 13, but with the parts changed in position with the clutch mechanism in engagement.

Fig. 15 is a vertical cross section of the same clutch mechanism, taken on the line 15-15 of Fig. 13, with the clutch out of engagement. i e Fig. 16 is a cross section in elevation of the same clutch mechanism and the shifting cams for shifting the male die transversely to and fro taken on the line 16-16 of Fig. 14, the clutch being in engagement.,

Fig. 17 is a cross section in elevation on line 17-17 of Fig. 4, showing the horizontal table for holding the pile of wrapping paper thereon, the forward glue .depositing roller being in position to deposit a streak of glue on the forward end of the top sheet of paper, and the rear glue depositing roller being against the glue roller rotating in the glue pan.

Fig. 18 is a view of the same parts, with the forward depositing roller depressed against the glue roller in front, the rear depositing roller being in elevated position to deposit glue upon the rear end of top sheet of the wrapping paper.

Figures 19-20-21-22-23 are various' details of the general driving clutch operated by the general source of power-an electric motor mounted on the structure, with connections for throwing the clutch into and out of connection.

Fig. 24 is a detail of the segmental gear `connection for controlling the action of the mechanism for operating the male die that cuts the disc of paper from a sheet and that is to be glued to the end of the roll after the projecting ends of the wrapper paper havl'e been duly folded against the end of the rol Fig. 25 is a detail in cross section of the construction of the connection of the vertical shaft that shifts the wrapping paper table upwardly as needed, shown in general in Fig. 6.

Fig. 26 is a detail in cross section of the male and female die parts and the sheet of paper to be cut between the two diememers.

Fig. 27 is a diagram of the appearance of the sheet of paper after the paper disc has been cut therefrom.

Fig. 28 is a diagram showing the progressive approach of the extending ends of the Wrapper paper upon the rolls contained in the folder blade apparatus.

Fig. 29 is a detail in cross section of the mounting of the disc paper roll from which the discs are to be cut. Fig. 30 is a side elevation of the apparatus sustained from the upper belt mechanism for holding the wrapper paper in alignment and from wrinkling.

Figure 30a is an end-elevation partly in section of. that shown in Figure 30.

' Fig. 31 is a view in side elevation ofthe a paratus for rewinding the die paper sheets a ter the discs have been cut therefrom.

Fig. 32 is a side view of the rewinding shaft. l

Fig. 33 is a detail of the means for operating the rewinding device.

Fig. 34 is a vertical section of the discharging portion of the machine showing parts in elevation and taken on the line 34-34 of Fig. 35.

' Fig. 35 is a plan of the same parts.

In the drawings the main frame comprises a rectangular structure having right and .left opposed longitudinal bars lO-BL eX- tending substantially the entire length of the frame, with a series of cross connecting bars, the front cross bar, the entrance end, being numbered 32, the succeeding bars B2i- 34- 35-36-37. 32 is an angled member, is a vertical fiat bar, 34 is a vertical flat bar, 35-36 are inverted U shaped channel bars open face down, 37 is a right angled bar with the horizontal face projecting rearwardly and is at the rear end of the frame proper. 38 is a vertical flat rearward crbss ar having an angled bar 39 attached thereto making a support for longitudinal bars and helping to form a rear bracket that supports the finished headed rolls as shown in Fig. 234i This frame is supported from the Afloor on front right hand leg 40, front left hand leg 40a; .4l-41a are rearward legs, 42-4Qa are right and left hand second rearward legs, and 4-3-42-30 are right and left hand rear legs. Toward the bottoms of these legs are longitudinal tie bars 44 and 44a, and front lower tie bar 45 and rear lower tie bar 4G.

Projecting forwardly from the general frame just described is a pair of brackets 47 at the right hand side and 47a at the left hand side, longitudinally extending bars 48-48a `connecting the outer ends of the respective brackets 47--47afl with the front cross bar 32, as shown in Figs. 1 and 6. Supported midway of the lengths of the extending bars Ljt8--48aJ are vertical posts guides or wings 53, also slidable on the shafts 50-51 by means of perforations therein, the brackets 52-52 being provided withy perforated bosses to steady the guides upon the shafts, as shown in Fig. 4. v Secured upon the crossframe member 32 and extending forwardly and angularly upwardly therefrom, is a series of spaced carrier bars 54, as shown in Figs. 4 and 6. The forward ends of these carrier bars are tied together by a cross bar 55. These bars 54 receive the rolls of paper to be wrapped, and the rolls may be placed thereon by hand or by any suitable carrier device from a dlstance.

Connected to the bottoms of the posts 49+49a are depending bearings 5G, in which is rotatably mounted a shaft 57, having an end 57a projecting laterally beyond the post 49. Rigidly secured at spaced intervals along the shaft 57 are spools 58, having arms 58a, leaving recesses 5S?) therebetween, large enough to receive an oncoming roll of paper and control delivery to the paper wrapping table just beyond. Hubs 580 secure the spopls to the shaft 57. Rigidly secured to the projecting end 57a of the shaft 57 is airatchet wheel 57?), having a series of four ratchet teeth thereon, corresponding to the recesses 58?) of thc spools, as shown in Fig. l. Pivotally mounted on the shaft 57 outwardly beyond the ratchet wheel, is `an operating lever 60, having at its apposite end beyond the shaft 57a a boxing 60a containing a spring pressed dog (50?) adapted to engage the teeth of the ratchet wheel as the arm is swung forwardly by the power operated connecting strap G00, the rearward end of which is pivotally connected with an oscillatable arm 8S), as shown in Fig. l. Rolls tobe wrapped are thereby delivered from the spools in spaced intervals of time, as the ratchet wheel turns the spools a quarter of the way around at each rearward movement of the dog, as explained.

The wrapping paper table and its regulating parts comprises a pair of opposed vertical brackets (3l-6ll seated on the longitudinal lower bars 44-44a, one of which is illustrated in Figs. 4 `and G. Upon the upper ends of these brackets is secured a transverse channel bar 62, having vertically spaced openings 62a for the reception of the vertical paper-table supporting shafts (33 that have lower shouldered ends 63a. The lower end of the shaft is provided with a vertical threaded opening 63?). A retaining collar 630 rests against the bottom of the shouldered end and against the bottom of 60 49-49a having at theirtops Y shaped arms t"the bar 62 and is held in position by a screw 4911-490. Supported on the outer ends of the arms 49?) respectively are cross shafts 50-51 upon which are slidably mounted 63d, as shown in Fig. 25. The upper ends of the shafts 63 are threaded, as at 63e, for adjustably supporting the paper table. 64

brackets 52-52 by means of eyes 52a. Seindicates a horizontal gear mounted toward Qi'cured to these brackets 52-52 areopposed the bottom of the shaft 63, held rigidly secured to the shaft by a key 656 through a shank 64a, the bottom of the gear resting upon the upper face of the bar 62 to rotate with the shaft 63. 64o indicates a series of vertical holes equally spaced concentrically through the gear at a radial distance from the axis of the gear, as shown more particularly in Fig. 4;

v Rotatively mounted upon the shank 64a j is a lever 65, projecting horizontally beyond the periphery of the gear andV having at its outer end a spring pressed dog 65a, adapted to engage'the circumferential teeth of the gear, and rotate the gear as the dog is cireumferentially moved by its connections. Beneath the bar 62 is rotatably seated a cross shaft 66 parallel with the bar, projecting laterally beyond the lower bar 44, where lit is provided with a rigidly connected hand wheel 66a for lreversing the movement of the shaft 66 and the rotary movement of the threaded shaft 63, this being accomplished by means of a spur gear 67 rigid on the shaft 66, the circumferential teeth reach into the series of circularly arranged holes 640 to give movement to the gear 64, thus turning the threaded shaft 63 in au opposite direction to lower the paper table.

68 is a flat table which loosely fits between the cross bars 33 and 34 longitudinally and between the side bars 30 and 3l of the frame and has its corners removed as at 68a' to permit the table to escape angular brackets in the corners of the intersection of the side and cross bars of the frame, as shown in F ig'. 4. Beneath the table 68 and secured thereto are longitudinal transversely spaced ribs 69 having at their longitudinal centers depending female interiorly threaded brackets 70, which receive the upper threaded end 63e of the vertical shaft 63, so that the rotation of the shaft by the operating mechanism described above, the table will be raised or lowered. Lying upon the upper face of the table 68 is a pile of sheets of wrapping paper 7l, said pile being of any desired `length laterally across the table according to the length of the roll to be wrapped, but the length longitudinally of the machine, is always the same because the diameter of the rolls to be wrapped is always the same. In depth the pile may be of any desired thickness, but in practice is intended tobe enough for a days run. Se-

cured to the upper edges of the cross bars 33 and 34 are thin strips of springy metal,

72, pressing upon the top sheet of paper bythe pressure caused by the rotation of the shaft 63, to prevent the paper from slipping too easily, longitudinally, and prevent the wrinkling of the paper toward the center of the sheet, while the glue depositing roller is depositing a strip of glue on the upper face of the paper, or from any other cause. The means for raising the table and holding the table, described above, are so arrangedl and operated that as an upper sheet is gluedv and picked up by the advancing roll and leaves the table for the folding apparatus, just beyond, the table is raised the thickness of a single sheet Aof paper, to be ready to receive its dole of glue as the first onev did.

There are two sets of gear wheels 64, one at each side of the machine, each having a pivoted arm 65. At the outer ends of these arms are vertical pivot pins 73, upon which is placed a horizontal connecting link, 74, so as to insure synchronous movement of the gears and the vertical shafts 63. Reversal of the movement of the gears 64 and the vertical shafts 63 in the interior of the depending threaded -members 70 is timed to move the table 68 the thickness of one sheet of the wrapping paper 71 as the last previous sheet has been' glued to a roll and carried away beyond the table to the folder mechanism. The reversal of the movement of the gears 64 and shafts 63 by the hand wheel 66 lowers the table sufliciently to permitof placing thereon enough new paper for a long run. During the placing of the new paper the bridge 1191i may be entirely removed so as not to be in the way, and when the new paper is in place it may be replaced for the purpose described.

During the reversal movement of vthe wheel 64 it is desirable to keep the dog 65a from engagement with the teeth of the wheel. To yaccomplish this result there is placed in the outer ends of the arms 65 respectively shouldered pins 75, projecting outwardly, and upon each pin is slidingly placed a strap 76 having longitudinal slots at the ends so that the strap rides longitudinally upon the pins. Upon the outer sides of this strap 76 and abreast of the pins 75 are secured slotted cams 77, thev slotted portions of the cams also riding upon the narrowed portions of the'pins. See Fig. 4. A pulling handle 78 is secured. to the right hand end of the strap 76, and by pulling laterally to the right hand upon the strap the cam moves the shouldered pin to the right and with it the dog 65a, which is an integral part of the pin, and against the contrary pressure of the spring, whereby the ratchet wheel 64 is released from the dog and the gear and the vertical Ashaft 63 may be freely turned in the opposite direction, to lower the table as described. lVhen the table is sufficiently lowered the cams 77 are moved in the opposite direction to permitthe dogs 65a to again engage the ratchet teeth.

For the purpose of rotating the shaft 63 l in an upward direction to raise the table 68, the arm 65 pivotedq upon the shank of the gear 64 is provided with a slotted right angled arm 79, the slot beingv at the outer end 'g roller shaft 95.

of this arm. A pivot pin 81 is secured upon a bracket fastened to the right hand end of the cross bar 62, as shown in Fig. 4; and pivoted upon this pin 81, and intermediate its ends, is a horizontal lever member 82, having at its inner end a downwardly projecting pin 80 that rides in the transverse slot in the outer end of the right angled arm 7 9 described above, so that lateral oscillation of the arm 82 will cause the pin 80 to oscillate the arm 79 and cause the arm (i5-79 to rotate about the shank 64a of the wheel 64. As the dog 65a is now in position to engage the peripheral teeth of the wheel 64 the wheel 64 will be revolved to turn slightly to the right and the vertical shaft 63 also to turn slightly. The threads at the upper end of the shaft 63 have a very small pitch, so that the slight movement described only raises the table the thickness of a single sheet of paper.

In the extreme outer end of the arm 82 is a transverse slot 83, through which ex tends a vertical arm 84, the lower' end of which is pivoted upon the end of the shaft 66. The extended upper end of-the arm 84 passes through a longitudinal slot on the horizontal bar 102 that controls the gluing apparatus, the slot being formed by spools 102-e and 102]", spaced apart and connected by a side strap, on the left hand Side of the member 102, as shown in Fig. 1 the spools forming stops at the ends of the slot, for operating the upper end of the lever 84 passing through the slot and operated by the spool stops as the bar 102 is longitudinally shifted by its operating mechanism. The spools are so spaced that as they contact the arm 84 the proper movement is given the arm 65-82 to cause the dog 65a to give the desired amount of rotary movement to the ratchet wheel 64 and its connections to raise the table the thickness of a single sheet of paper.

85-85 are angle iron bearing brackets in the corners of the side bars 30-31 and the cross bar 33 reaching below the bar 33. 86-86 are similar brackets at the corners of the cross bar 34 with the sides of the frame. 87 is a front shaft having a bearing in the brackets 85-85, 89-89 are spaced arms fixed on the shaft 87 within the frame bars 30-31. 90 is a transverse shaft rotatably mounted in the ends of the arms 89 having thereon removable 'spools 91, to carry glue from the glue roll to be deposited on the upper forward face of the top sheet of wrapping paper. 92 is a transversely lextending glue pan sustained in brackets 93-93 (see Figs. 17-18) secured to the front frame bar 32 at opposite ends thereof. Under brackets 94-94 are also provided for sustaining the ends of the glue This roller is so placed that its lower portion is within the pan and rotated during operation the upper ortion continually presenting fresh lue or the glue depositing rolls Just mentioned-91 on the shaft 90. The rotation of the glue roll 95 causes the rotation of the shaft 90 and its rollers so long as they are in contact, whereby the spools or rollers pick up enough lue to be deposited upon the forward en of the paper sheet. On the right hand end of the glue roller shaft 95'is a driven spur gear 96. A driving gear 97 for the spur gear is sustained on the bracket 94, which in turn is driven by a'belt 98 that is operated by a pulley 98a on an overhead shaft 119e, so that the main vglue roller 95 rotates continuously with the rotation of the shaft 119e.

99 is an arm on the left hand end of the shaft 88, and is duplicated on the right hand end. Between the ends of these arms is a transverse shaft 99a. 88 is a transverse shaft at the rear of the paper table having bearings in brackets 86-86 and which protrudes laterally beyond the side bars 30-31. The shaft 99a is rotatable in the ends of the arms 89, and is similar to the shaft 90 on the arms 89. In the sides of the side bars 30-31 adjacent the shaft 88 are angular slots 99?) in the path of the travel of the shaft 99a. This is necessary because at the rear the operating arms 89 lie without the bars instead of within them, as at the front. 990 is a bracket on the right hand bar 30 to carry the right hand end of the glue roller shaft 99e, and its driving gear. 99d is a left hand bracket on the bar 31 to carry the left hand end of the glue roller shaft. 99e is a -shaft mounted in the brackets 990 and 99d to carry the glue roller proper, 99ee. 99]c is a driven gear on the right hand end of shaft 99e; 99h is a driving gear mounted in the bracket 990 and meshing with the gear 99f (Fig. 1) to operate the same. 99k 1s a belt for operating the driving gear 99h, which in turn is operated by a ulle 12776 on a transverse shaft 1261 that 1s mounted in brackets 126-126@ supported on the lower longitudinal bars 44-44a that is operated as explained below.

Between the cross bars 32 and 33 of the frame a gap is left for the passage of the glue depositing rollers 91. A similar gap is left between the cross bar 34 and the channel bar 35 for the passage of the rear depositing roller. Fixed upon the outer end of the shaft 87 is a depending lever arm 100, and upon the shaft 88 is a similar arm 101, but not parallel with the arm 100. A link 102 connects the arms 100 and 101 by means of longitudinal slots 1020! and 1021) in the front and rear ends of the link, and in which are slidably inserted knuckle pins 1020 and 102d that are fixed in the ends of the arms 100 and 101, so that the link 102 is free to slide on the knuckles without m-

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