US 2822652 A
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Description (OCR text may contain errors)
Feb. 11, 1958 R. E. TAGGART r-:rAL 2,822,652
WRAPPING MACHINE '7 Sheets-Sheet 1 Filed Dec. 13. 1954 R. E. TAGGART ETAL 2,822,652
Feb. 11, 195s WRAPPING MACHINE '7 Sheets-Sheet 2 Filed Dec. 13. 1954 Feb. 11, 1958 R. E. TAGGART ET Al. 2,822,652
WRAPPING MACHINE Filed DSC. 13, 1954 7 Sheets-Sheet 5 Feb. 1'1, 1958 R. E. TAGGART ETAI. 2,822,652 i WRAPPING MACHINE '7 Sheets-Shea?I 4 Filed Dec. 15, 1954 Feb. 11,' 1958 R. E. TAGGART r-:TAL 2,822,652
WRAPPING MACHINE I Filed Dec'. 13, 1954 'I sheets-sheet 5 Feb. ll, 1958 R. E. TAGGART ET AL WRAPPING MACHINE '7 Shawna-Sheetl 6 Filed Dec. 13, 1954 Feb. 11, 1958 Filed Dec. 13, 1954 R. E. TAGGART ETAL 2,822,652
WRAPPING MACHINE 7 lSheets-Sheet '7 /fiw United Statesv Patent() WRAPPING MACHINE Robert E. Taggart and James C. Travis, Anderson, Ind.,
assignors to Lynch Corporation, Anderson, lud., a corporation of Indiana Application December 13, 1954, Serial No. 474,898
12 Claims. (Cl. 53-22S) This invention relates to a wrapping machine particularly adapted for wrapping packages of either round or square shape, readily interchangeable wrapping heads being provided for the round or square packages as,
One object of the invention is toprovide arelatively simple arrangement for quickly adapting the machine for round or square packages by means of removable rotary wrapping heads supported entirely from one side and including openable pockets of different character in the two wrapping heads, but operable in a similar manner by the same mechanism of the machine and particularly certain cams thereof so that no change in the cams is necessary when changing from round to square wrapping operations or vice versa.
Another object is to provide a wrapping head of barrel-` like character open at one end and supported for rotation at its other end only so that hold-down and package push-out instrumentalities can operate inside the barrel and can be supported at its open end so as to project thereinto with the operating mechanism therefor entirely outside of the barrel. p p 1 Still another object is to provide a wrapping head having pockets wherein a wrapper is wrapped around a stack of articles such as cookies or sandwiches, the pockets being openable to receive the articles and wrapperyclos'- able to carry the same during the wrapping operation and openable again for discharge ofthe wrapped articles therefrom.
A further object is to provide wrapping instrumentalities for the various flaps of the wrapper to wrap them around the package, and a plurality of heaters for heating the flaps and thereby adhering them to the main body of the package.
Still a further object is to provide a cam arrangement for opening and closing the pockets of the wrapping head-.and for moving the heaters mentioned in the above object into and out of contact with the packages during the wrapping thereof, the cam arrangement being oscillatable so as to open and close the pockets and to move the heaters into and out of contact dun'ng a stationary part of the intermittent cycle of rotation ofthe wrappinghead,
the head being rotated by a Geneva movement andV the Y oscillations of the cam being timedin relation thereto so as to be active only when the head is inactivebecause of the dwell of the Geneva movement. f V l An additional object is to provide heaters that are adaptable for either round or square packages and which can be quickly adjusted for oneV or the other merely by rotatably reversing them so that either a curved face or a at face thereof contacts the packages, depending on whether round or square packages, respectively, are being wrapped. Y
With these and other -objects in view, our invention consists in the construction,V arrangement and combination of the various parts of our wrapping machine, whereby the objects above contemplated are attained, as hereinafter more fully set forth, pointedout in .Qurclaimstaud illust..
2,822,652 Pitented'Feb.` 11, 1958 ICC trated in detail on the accompanying drawings, wherein:
Fig. 1 is a plan view ofpart of a wrapping machine including the mechanism which constitutes our invention and shows the relationship of various parts thereof.
Fig. 2 is an enlarged side elevation of Fig. 1, portions of Fig. 1 being shown in section on the liuel-l'of Fig. 2.
Fig. 3 is a front elevation of Fig. 2, looking in the direction of the arrow 3 adjacent the left side thereof.`
Fig. 4 is a vertical sectional view of the line 4-4 of Fig. 3 showing one of the cam actions of our machine.
Fig. 5 is a vertical sectional view on the line 5-5 of Fig. 3 showing another cam action thereof.
Fig. 6 is a vertical sectional view on the'line 6 6 of Fig. 3. Y
Fig. 7 is a vertical sectional view on the line7-7 of Fig. 6.
Fig. 8 is a vertical sectional view on the line 8-8 of Fig. 7.
Fig. 9 is aV right side-elevation of a take-out conveyor and a portion of a take-away conveyor together' with adjacent portions of our wrapping machine.
Fig. 10 is a partial side elevation and partial sectional view of the lower portion of the wrapping head for square articles taken from the reverse side in relation to Fig. 6 to show how theparts of the pocket are adapted for square articles instead of round articles, as are the pockets of Fig. 8. Y,
p Fig. 11 is a perspective view Vof a stack of round articles showing the association of a wrapper therewith as. the articles are elevated from the position shown in Fig.. 8 into a pocket of the wrapping head.
. Fig. 12 is a similar perspective view showing the .way the wrapper is folded to make the rst Aeudflaps as the articles are introduced fully into the pocket of the wrapping head.
Fig. 13 is a diagrammatic view showing the circum-r ferential ap of the wrapper being folded by a folder` blade.
Fig. 14 is a similar diagrammatic view showing the second circumferential ap being folded.
Fig. 15 is a further diagrammatic view showing the;
second end flap being folded as the partially wrapped article is pushed into the take-out conveyor'ofV Fig. 9.
Fig. 16, on the sheet of drawings withFig. 2, showsthe third end ap being folded byv one of final or fourth end fold being formed vby a folder element of Fig. 9. s
-On the accompanying drawings. we p have used the reference numeral 22 to indicate a vertical frame and 28 a tablesupported at the top of the .vertical frame.
Fig. 2 shows the right. side off the machine when' and a Geneva housing cover 36 is securedthereto to form an enclosure for a Geneva movement. A head shaft 38 isA journaled in bearings 40 and 42, carried by the housing 34 and its cover 36, and supported on the righthand end thereof is a round head indicated generally asRH.
This is a handling head for round articles, such as disclike cookies or sandwiches, whereaswe also provide a square head. SH (see Fig. 10) interchangeable with the round head and provided for wrapping square articles such as square cookies, crackers, 'orsandwiches ,'l'he Geneva .movement above referred Yto .consists l of the folder elements 'f agseaesef a Geneva disc 44 secured to the shaft 38. and a` Geneva.
rotator 46 carrying a roller 47 to enter the slots of the Geneva disc. The rotator 46 is secured to a Geneva rotator shaft '48; The shaftt 48l'is1 also journaled-inthel anism-above/referredtoandi-a'-el'rain-fiii's driven 'hy r-a sprocket 80 on the Geneva rotator shaft 48. Y 1Referring-toLiFig.-9; a-take-outi' conveyor chain gifts shown carrying take-out elements 86 of angle shape. "Tl-iechain-84 extendsfaroundfsprocketsfSS fandlllll for conveying the wrapped packages from the roundA head RH tothetakefaway conveyor 32. Thel sprocketfSS'is secured-toa shaft 88a.
sprocket 2104: (see--Fig..-3-)- securedi to-thefheadi shaftl 38.
The chain.- drives-.a-'sprocket- (not'lsh'own) on theV shaftv 'Ihef-chaiu 84 rand-its' 'element-'s 86i-fd'eliver the wrapped packages -to a plate-92-(Fig. y9)"-s'panning the distance between the sprocket 90 and the conveyor 32, and/sweep ngersi-96-'aref provided -to--move the packages along --this plate.---Thef'sweep tngersiar'e driven `by a package. hold-- down'belt supportedl-l94=on air-ame 98-which is pivoted on a shaft 95 for the sweep-iingersso-that the frame canV beraise'd inthe-eventtrouble is experienced iu the proper wrappingofany-package. The-frame 98-is-shown in the lowered; or lope'rati-veposit-ion` with a shaft 95e thereof resting on a post 95". A shaft 32a of the conveyor A-32 and-thelshaft S15-arciy driven from the-shaft 76 by suitable meansnot illustrated.
Referring now to the` details of the round head-RHl is. rigidly mounted-in and-carriedf-iby' the ring 108.v The The; Atakefoutconveyonichain l 84 is driven' in an intermittent'manner--by means ofv af Alchain-*1202'fol'rar energized type.
of the bell crank 152 carries a roller 158 cooperating with a barrel cam 160, the cam groove of which is indicated at 162. The cam 160 is secured to the cam shaft 68, and thereby rotatable in unison therewith and in timed relation to the wrapping machine.
Referring to Figs. 3, 6, 7 and A8, three heaters H1, H2 and H3 are provided which may be of the electrically Three brackets 164- are-secured to the Geneva housing 34, and project toward-the right side of the machine. The outer end ofeach bracket car-ries a bearing 167 in which a rock shaft 166 is journaled. A heater carrying arm 168 is secured to each rock shaft for supporting the' heaters H1, H2`and H3? A rock4 arm 170 tothe cam- 142` and accordinglyoscillates therewith under other end 120 of the pocket is provided in the form of a movable.member,\-carried @by-a .slide--rod- 122 which is urged. to the Vpositionshownf-byr a'` spring :1261that permits slight movement of the fend' .120Jaway fromthefend 116 when the 'cookies enter'between them.
. Returning toFig'. 8, a' stationary pocket side 128`is supportedY on a. crossbar 110,' and--a-'rnovable-side 13G-is supported vby an. arm 132mou-nted1-on air-eck shaft V134,-one for each of the eight pockets.; Thus; the 'elements-1116, 120, 128 and 130 form an openable pocket,- the openpo'sition being shown for the pockets' at stations (l), (7) and (8), the pockets Yof the head being designated (l) to' (8) in Figs. 6 and I3. Each ofthe rock'shafts134has a rock arm 1'36 mounted thereon and terminating in a'iroller 138.
The rollers 138 are engaged with -a cam- 142 having aA lobe v 144 by means of springs 140.
The cam 142 as shown-in Fig.- l?. is o-scillat'abl'e fon aq controlof the-cam11f60 on'thecamfshaf't'=68.l Details of` operation Will--be explained hereinafter. Each heater Ahasaliatface 176 and' opposite thereto acurved facev 178 and these faces are preferably serrated as shown in Fig. 7. One ofthe-'heating elements foret-he heaters is` shown at HE inl-iig; --bengof the metal'sheathedtype received in a-boreof the heater.
The intake conveyor-l0 isrprovided with pockets --1-80 to receive-articles' to-be wrappedlsuchasicookies or sandwches-182-(seeA Figiv 8).`v These'are'the roundty-pe. A ram-'184;having`a'head-186fis adapted to pass upwardly' through -thebo'ttom of 'the-pocket i180 tov raise* the articles 18W-throughv ani'opening188of the-table- 28 'against a sheet of wrapping paper 190, and to moveI the articles and the paper'into-thepocketfof the'he'ad 'RH atstation` (fl). Thelrami1l8'4 shown in Figs. ZfantiV 8- isreciprocated vertically in timedvrelation-tothe"operating cycles ofthe machinebutthe'rnechanism'to accomplish suchl reciprocation isY not :described'f in f det-ail theL *detailsv thereof will be f '-'found 'i`11A the prior patents of 'v Sandberg,` Nos. 2,567,405, 2,603,048 and 2,642,707 of ourassi'gnce'.
- Wrapping paper maybe supplied from a reelA and may be cut-*by apaper cutting 'mechanism' asL disclosed in Sandberg patents-into-individual: wrappers 190 shown in Figs. 5,' 6,'- 7 and 8ffu`nder the control'ofthe electric eye mechanism shown in said patents(Y The mechanism just referred; toisnot -`part 'of' our'-`present invention and therefore will not be described in greater detail;
Referring toFigf-l l; the coaction-'of the "wrapper 190 withftle stack ofarticles"1182lr is illustrated' in theq relative positions 3they :assume Vjust after thex articles' have 'passed through the openin'gdlSS of'lthe table 28. When the article and wrapper are completelyin the pocket'o the had `A`RH-atlst ati'on( 1) the first end vtiaps vwill `have been foldedbyfthepocket' ends 1116 and* 120l as'illustrated in Fig-'1.12" andf'this-ap i-s numbered 1.` The next operation is illu`strated inY Fig. 213f7whererr theA trst circumferentialA hasoneiend. (Figsf. 2", "Siand 5) pivotedfto -the'slide 200 and-its other endfpivotel tothe upper end of a level-206. The lever-2206z -is-go'scillatble Yon a-studZtlS carried by a bracket-armlzlfeittendingfron the `bracket 156. The lower end of the leverfztlG-carriesa roller4 2-12y (Fig. l5)- coactingl'withabarrelfca'm T2143 thei'cam groove being shownat-Zl I Y -Atterthe' staclt/ of y--ar"ti cles'A -182 andthe '-wrapper 190 are completelyini-the pcke't'fat-station') the movable bell crank` 152.. The bellf crank 1.52is'oscil1atable onla of the pocket side at station (1) and simultaneously heaters-.s'o that'they arearaisedi froml the-position shown and-thehead-RH- isi-then 'ready-torotate.-
As the head RH rotates, the second circumferential ap of the package indicated at 1B in Fig. 14 is folded around the articles by a curved plate 218 which is stationarily mounted. Thereupon the partially wrapped package at station (2), having both circumferential flaps and the first end folds (l) completed, is ready to move to stations (3), (4) and (5) where heat is applied as the heaters are moved into contact with the ap 1B at these stations.
The package is then ready to move past an idle station (6) to station (7) where it is to be ejected into postion for engagement by the take-out elements 86 of the take-out conveyor chain 84. This is accomplished by a push-out rod having a push-out head 222 thereon, the rod being L-shaped as shown in Fig. 1 and secured to a rack 224 which is slidable in a rack and sector housing 226. Within the housing 226 a gear sector 227 meshes with the rack 224 and is mounted on a rock shaft 228 journaled in the housing 226.
Within the rack and sector housing 226 is a gear sector 227 in mesh with the rack 224 and mounted on a rock shaft 228 journaled in the housing. Exteriorly of the housing an arm 230 extends from the rock shaft and a link 232 depends therefrom and terminates in a closed fork 234 straddling the cam shaft 68. The fork carries a roller 236 coacting with a barrel cam 238 on the cam shaft, the cam having a groove 240 therein for the roller. Accordingly the cam vertically reciprocates the link 232 for oscillating the gear sector 227 and thereby reciprocating the rack 226 and the push-out head 222. This head is shown in the pushed out position in Fig. 13, after having extended through the pocket at station (7 of the head RH, and the retracted position of the head 222 is shown by dotted lines, within the ring 108 so as not to interfere with the intermittent rotation of the head RH. The cam 238 is set, of course, so as to properly time the reciprocations of the push-out head 222 to occur at a time the head RH is stationary.
Referring to Figs. l, 3, 7 and 8, a paper hold-down shoe 242 is illustrated. This shoe is loosely pivoted on the lower end of a rod 244, telescopically mounted in a tube 250, and normally biased downwardly relative thereto by a spring 246 in the tube. The tube 250 is vertically slidable in a bracket 248 extending upwardly from the table 28 and having a foot 249 secured thereto .(as shown in Fig. 1) and into the head RH. A lateral pin 252 is carried by the upper end of the tube 250, and the upper end of a link is pivoted thereon, its lower end being pivoted to an arm 256. The arm 256 is mounted on a rock shaft 258 journaled in the bracket 248.
Asecond arm 260 is secured to the rock shaft and a link 262 has one end thereof pivoted to the upper end of this arm. The other end of the link is pivoted to a boss 264 (see Fig. 2) secured to the rack 224 so as to be movable therewith. Accordingly when the push-out head 222 is farthest to the left in Fig. 8 the hold-down shoe 242 is farthest down in its travel and ready to be engaged by the paper 190 as the paper is raised by the articles 182 engaging therewith. Thereafter as the articles and wrapper are moved into the pocket at station (l) of the head RH the tube 250 is retracted but not quite as fast as the articles enter the pocket of the head RH, and therefore the spring 246 is under predetermined tension to hold the shoel 242 against the wrapper 190 to prevent it from slipping in any lateral direction relative to the articles being wrapped. Finally when the shoe 242 is in its raised position it is clear of the pocket so as to permit the intermittent rotation of the head RH without interference.
Referring to Figs. l and 9 folder elements 266 are illustrated which form the second end fold on the package as illustrated in Fig. 15. This second end fold is labeled 2.
After the second end fold is formed, one of the takeout elements 86 engages the partially wrapped package to carry it to vthe plate 92.y Further folder elementsl268- and 270 are shown, these being the usual plow or twisted I blade type, and these are operable for forming the third and fourth end flaps 3 and 4 as in Figs. 16 and 17. Thereafter the package passes between heater shoes 272 (Fig. 9) to seal the end flaps 1, 2, 3 and 4 and the kickout fingers 96 move the completed package across the plate 92 onto the take-away conveyor 32.
In Fig. l0, SH indicates a head for wrapping square articles, the pocket being illustrated at station (l). In place of the stationary pocket sides 128 and 130, pocket sides 128a and 130a of somewhat different shape are used for the square articles which are indicated at 182a. A disc 106a and a ring 108a are provided to form the framework of the head similar to the head RH, but the two are connected by struts 110a adjacent the periphery of the ring 108a rather than adjacent its inner diameter as are the struts 110 in the round head (Fig. 8).
In addition to the rock shaft 13411, a second one, 134b is used for the pocket side 128b. The two are operatively connected together for simultaneous movement by means of a first gear sector 174 and a second gear sector 176 m-eshed together as illustrated. The rock shaft 134a (the same as the rock shaft 134) carries an arm 136a and a roller 138a as shown in dotted lines for coaction with the lobe 144 of the cam 142. Other comparable parts, such as the springs 140a, are also used. Also', additional springs 178 back up the pocket sides 128a and 130a, tending to close them.
When it is desirable to change from wrapping round articles to wrapping square articles, it is merely neces- Y sary to remove the round head RH by removal of the screws 112 shown in Fig. 7 and substitute the square head SH. The heaters H1, H2 and H3 are turned over so that their flat sides 176 rather than their curved sides 178 are toward the'head. Thereafter, when the machine is put into operation the cam 142 will coact with the rollers 138a in the same manner that they coacted with the rollers 138 and the square articles will be properly wrapped in the machine.
From the foregoing specification it will be obvious that we have provided a wrapping machine wherein round or square articles can be wrapped with a minimum of changes required to adapt the machine for either type ofi article. Contrasted with the Sandberg Patent No. 2,642,-v 707, only one of the end folds is formed in the head rather than all four. formed in`substantially the same manner as in the Sandberg patent and our arrangement permits more effective heating of the circumferential flaps by the heaters H1, H2 and H3 prior to finishing the wrapping of the ends of the package. The second, third and fourth end flaps are wrapped and sealed after the package leaves the head. This arrangement permits the construction of a head that is considerably less expensive to manufacture than the one shown in the Sandberg patent and permits the folding of the second, third and fourth end flaps and the heating thereof in the take-out conveyor shown in Fig. 7 where the frame 98 is readily movable to the raised position shown in Fig. 3 to clear out any miswrapped packages.
Some changes may be made in the construction and arrangement of the parts of our wrapping machine without departing from the real spirit and purpose of our invention, and it is our intention to cover by our claims any modified forms of structure or use of mechanical equivalents which may reasonably be included within theirl tially spaced pockets to receive articles and wrappers Y therefor, each of said pockets having a pair of ends and a pair of sides, at least one of said sides being openable.
to receivean article and a wrapper therefor, means for Both circumferential flaps are movngnhefartele 'andwr'p'pei into the pocket at 'a' rst station et said. head, said pocket ends folding the'rsrt' end aps of 'thewra'ppen cam means for" opening said" openable pocket side asthe article and kwrapper enter the station during rotationoftheheadga plurality of heater shoes at further 'stationsof said he'ad, a 'second cam means 'l for engaging said heatersh'es with1tle"-packagewh`ile` the Vhead is 'stationary'anddisengaging thei'n"fromthe ing lsaid head throtigh its 'openiend to push the partly wrapped article out of the; head'by radiallyV outward f movement relative thereto at a' 'stillf'urther station,"said" camfineans'al'so opening the'pocket at'said last station,
'20 the wrapper las thepackage isso pushedytake-'ont conveyor means 'form'ovin'g the article"thereafter; third' and end `apfolder blades for 'folding thesecond 'end aps of fourthend ap folder' blades for folding the third andm fourth end flaps of 'the 'wrapper as thepackage is further advanced bysaid take-out conveyor means, and heatersA beyond said third and fourth end iiapfolderv blades for' heating' the end folds'of the wrapper, said first and second-cam means, said folder bladefsaidmeans for inter mittently rotating said head,'"s'aid pn'sh-o'ut'means and.
said take-out' conveyor means Hbeing -cyclically' operated in accordancewith the cycles of' operation of said wrap-v ping machine.
2. In a wrapping machine," a Wrapping rhead 'of barrellike character supported for rotation' at one'end and having its center opening to the oppositee'nd 'of the head, said head having ycircumferentially spacedpockets to receive articles an'd wrappers therefor, 'each 'ofsaid poeketshaving a pair of ends and a pair of sides," oneV of 'saids'ides being openable to receive an article and a wrapper therefor, means'for moving the article and Wrapper'into the pocket at a first station of said head, said pocket ends folding the rst end flap'spf the wrapper, cam 'means for opening' said'openable pocket side as the article and wrapper enter the pocket, a'folder' bla'de movable 'to'fold a first circumferential'ap of the Wrapper, means 'for intermittently ro-V tating said heada pocket at a time, a stationary blade engageable with a second circumferential flap 'of the wrapper to fold it aroundthe article Voverlappini'z, the first circumferential flapas the pocket is'adva'nced to a second station during rotation of the'head, push-outrnean's entering said head through its open end and movable radially outward thereof to push the partly wrapped article ont of the head at a further station thereof, end ilap folder blades'for folding the second 'end tlaps of the wrapper as the package is so pushed, take-out conveyor means 'for'movingthe article' thereafter, third and fourth end ap "folder 4bladesV for folding the third and fourth end flaps of 'thewrapper as the package is further advanced by'said takeout conveyor means, said cam means, said folder blade, said means for intermittently rotating said head; said push-'out means and said take-out conveyor means being cyclically operated -in accordance with the cycles of loperation of said Wrappingmachine. y
3. A wrapping machine comprising a Wrapping head of barrel-like character removably supported for'rotation at one end and having its center opening to the opposite end therefor, meansfor moving thearticle Yandv wrapper into the pocketlat a rst station -of said 'headfwrapper holddown-riieauls.I entering said head thronghits'openend land movable -through'-a pocket thereof at said first station -for holding the `vi/rapperagainst Ythe article, said pocket ends for opening fsaidvpocket sidesrasfthearticle and wrapper Y enter Vthepocket, Va folder Vblade Amovable to fold a firsty circumferential' flap' of 4the vwrapper,` means lfor intert mittently rotating saidhead'a pocket at a' time; a second blade curved to" engageasecond circumferential apof the wrapper tofolditl around the article overlapping lthe rstcircumferentialflap as the kpocket'is advancedtoA a second station during rotation of the head, push-out means entering said head throughitsV open'e'iid to'push the partly wrapped article out of the headat a still further station of said head, and folder blades'for folding `the remaining end flaps of the 'Wrapper after the package leaves said first f means, saidfolder` blade andsaid means for intermittently l rotating saidrhead'being cyclicallyr'operated.
4. ln a Wrapping machine, a wrapping head'supported for rotation and having circumferentially spacedV pockets' e to receive articles andiwrapp'er's therefor,V each of said pockets having a pair of ends anda pair of sides, at least one of said sides being openabley to receive an articlef meansfor moving the article andwrapper into the pocket at a rst 'station of said head,said1pocket ends folding the first end flaps of the wrapper, cam'means rotatable about the 'axis of rotation'ofl said wrapping head for open ing said openable sides'as the article and wrapper enter the pocket vand while said head is stationary, a folder blade l movable tofo'ld a' first circumferential flap lof the wrapper also while* said head is stationary', means Afor vintermittently rotating said head, a stationary blade engageable with a second circumferential'fla'p of the wrapper to fold it around-the `article overlapping the rst circumferentialv ap during rotation of said head-,pushout'means -to push the partly yWrapper article out'of the head at a still further' station thereof,-end flap folder blades lfor folding the second endaps'ofthe Wrapper as thepackagelis'so pushed',
means-forthereafter folding the third 'and fourthend' aps of the wrapperfsaid Icatnni'iearis,'saidfolder blade;A l said means for intermittently vrotating said head and said;L
push-out-means being cyclically operated.'
of the wrapper, cam meansfor opening said openable pocket side as thearticle and wrapper enter the pocket, a
folder blade movable to fold 'a first circumferential flap of the wrapper, means for intermittently rotating' said head a pocket at a time, a stationary blade'engageable with a second circumferentiall flap' of the wrapper to f'oid it around the article overlapping thel first circumferential ap yas the pocket is advanced to a 'second station' during rotation vof said head, pushout means to push the partly wrapped article out of said head at a still further'station' thereof, folder` bladesfonfolding"the'second end flaps of the wrapper as the package is so pushed, take-out'conveyor means for movingxthe article thereafter, third and fourthfolder bladesfor foldin'g'the' third and fourth end aps yof the wrapper as the'package is further advanced by said take-ont conveyor means, said cam means, said wrapperhold-down means, 'said .folder blade, said:
means for intermittently rotating'said head, said push-out means and said tak'ef'out `convi'eyor means being cyclically operated'in accordancewith the' cycles of operation of said wrapping machine.;
6, A wrapping" machine comprising a wrapping head'. having one end supported forrotation and its opposite end open, said head having circun'iferentiallyY spaced pockets to receive articles` and' wrappersftherefon-eachmof said` pockets having a pair of ends and a pairv of sides,
said sides being-openable to receive an article and ai wrapper therefor, means for moving the article and wrap-` v per into the pocket at a first station of said head while for thereafter rotating said head, a stationarylblade engageable with a second circumferential flap ofthe wrapper to fold it around the article overlapping the first circumferential ap as said head is rotated, a plurality of heater shoes at further stations of said head, a second cam means for engaging said heater shoes with the package. while the head is stationary and disengaging them from the. package while the head is rotating, push-out means entering said head through its open end to push the partly 'i wrapped article out of the head at a still further station thereof,said cam means also opening the pocket atsaid still further station, folder blades forfolding the second end aps ofthe Wrapper as the package is so pushed,
third and fourth end flap folder means for the partially Y wrapped package, andrheaters for heating the end folds of the wrapper, said first and second cam means, said folder blade, said means for rotating said head, said pushout means being cyclically operated in accordance with the cycles of operation of said wrapping machine, said wrapper hold-down means being operated simultaneously with said push-out means.
7. In a wrapping machine of the character disclosed, a wrapping head ,having one end supported for rotation andV having itsopposite .end.open, circumferentiallyl spaced pockets-inL said head to receive articles andwr'a'p! pers, each of said pockets having a pair of ends and a pair, of sides,a't least one of said sides being openable to receive arr-article and a .wrapper therefor, rneansf'forV moving the article and wrapper into the pocket at a first station of said head, wrapper hold-down means extending within said head through its open end and movable through the pocket at said first station for holding the wrapper against the article as said pocket ends fold the first end flaps of the wrapper, cam means for opening said openable side as the article and wrapper enter the pocket, folder blades to fold first and second circumferential aps of the wrapper, a plurality of heater shoes at further stations of said head, a second cam means for engaging said heater shoes with the package while the head is stationary and disengaging them from the package while the head is rotating, push-out means entering said head through its open end to push the partly wrapped article out of the head at a still further station thereof, blades for folding the second end aps of the wrapper as the package is so pushed, means for thereafter folding third and fourth end aps of the wrapper and heaters beyond said last means for heating the end folds of the wrapper, said wrapper hold-down means, said first and second cam means, said folder blade, said means for intermittently rotating said head and said push-out means being cyclically operated.
8. In a wrapping machine of the character disclosed, a wrapping head having circumferentially spaced pockets `to receive articles and wrappers therefor, each of said pockets having a pair of ends and a pair of sides, at least one of said sides being openable to receive an article and a wrapper therefor, means for moving the article and wrapper into the pocket at a first station of said head, wrapper hold-down means located within said head and movable through a pocket thereof at said first station for holding the wrapper against the article, said pocket ends folding the first end flaps of the wrapper, cam means for opening said openable side as the article and wrapper enter the pocket, a folder blade movable to fold a .tirstcircumferential,flapf ofthe wrapper, means forfintermittently rotating. said head a pocket at. atiine, a stationary bladeengageable with a second circumfe ential ap of the wrapper to fold it around the article overlapping the rst c ircumferemtial flap as the pocket is advanced to a second station during rotation of theV head, a plurality of-heatershoes at further stations of said head,f said shoes-having curved `and at. faces .and beingreversible to present ,either face tothe articles i saidgpockets, a SecOndHcam, means fornengaging said, heater shoes withhthepackagelwhile the head is stationf. aryfand disengagingjhemfrom. the package while the, headjs rotating, means to. push the partly wrapped Ya ticle outiofj'the head -at=a still furtherstation thereof, folder blades `for foldingthe second end'flaps of the wra peras the packageis soi/pushed, take-out conveyor means for-moving the articlethereafter,,third and fourth folderblades for foldingthethird andfourth end'aps of the wrapperjastthe package is further advanced by said takeout conveyor fmeans, saidv wrapper hold-down means, l., ,Y said first and lsecond means, said folder blade, said y; means for intermittently,rotating said head, said push f out meansy andgsaid` take-outjconveyor means being cyclically operatedin'accordancewith the cycles of opera-ff, ,y tion ofrsaid wrappingmachine. j
9i, In a'wrappingfmalchineof; the character disclosed,a wrapping head comprisinga disc supported for rotation, ,n a .ring connectedtherewith -in spaced relation thereto, circumferentially Aspacedfpockets between said discand said, ring toy receivefarticles and wrappers therefor,` each f, oflsaidpockets havingrapair of ends,` and a pair of sides, f atv least-one of said sidesfhaving a terminalfend to retains-,- f v an farticlein the pocket andbeing openable to receive the. article; iand ,afwrapperztherefon means *for movingthe articlefandwrapperqintoihe pocket at a first station of said head whilesaidpocket sidev is open,s,aid pocketgends Y, folding A the first endflaps v-of the,v vrapper`, camlfm'erans, for opening said openable side as the article and wrapperienten thzegpocket and for thereafter closingfit to 'retain `the articleqmeans ptogfoldgarrst circumferential flaprofzthel. f wrapper, means for intermittently rotating said head one pocket at a time, means to fold a second circumferential ap of the wrapper around the article overlapping the first circumferential ap as the pocket is advanced to a second station during rotation of said head, push-out means entering said head through said ring and movable radially through a pocket of said head to push the partly wrapped article out of the head at a still further station thereof, and folder blades for thereafter folding the second, third and fourth end flaps of the wrapper.
10. A wrapping machine comprising a wrapping head comprising a disc supported for rotation, a ring spaced therefrom, cross members connecting said ring to said disc, circumferentially spaced pockets between said disc and ring to receive articles, each of said pockets being openable to receive an article and a wrapper therefor and having an inturned flange to hold the article and wrapper in the pocket, means for moving the article and wrapper into the pocket at a first station of said head, cam means foropening the pocket as the article and wrapper enter the pocket, a folder blade movable to fold a first circumferential flap of the wrapper, means for intermittently rotating said head a pocket at a time, a stationary blade engaged with the second circumferential flap of the wrapper to fold it around the article overlapping the first circumferential ap as the pocket is advanced to a second station during rotation of said head, push-out means en-` tering said head through Aits open end to push the partly wrapped article out of the head at a further station thereof, said cam also opening the pocket at said further sta-v tion, folder blades for folding the second end aps of the wrapper as the package is so pushed, take-out conveyor for moving the articles thereafter, third and fourth folderl blades for folding the third and fourth endaps of the wrapper as it is moved by said take-out conveyor, said menaces-'1:
tently `rotating said head; saiclfflgiushwmL meansrandfs'aid takleput convlej'or being operated'fcyclicallyYin'r accordance with the cycles of operation of thewrapping machine;
l1.l A wrapping machinecomprsing a wrappinghead-- comprising a disc supported for rotation,- a ring-fspaced therefrom, cross membersconnecting:saidgringitosaidr disc, circumferentially Ispaced pocket'sbetweensaid ldiscf and ring to receive `articles'and"v.\rappers therefor; `eachJ of said pockets havinga pairAof ends and a pair-ofsidesf= which' are openabletofeceive an article and a wrappertherefor and having an inturned angertothold the article v and wrapper inthe pocket, means for moving the article and wrapper into the pocket at a first station of said'head,y
said ends folding the lirst end -ap=of thewrapper, cam
termittently rotating said -head a pocket at altime, a
stationary blade engaged with the second circumferential` ap of the wrapper to fold it around the article overlapping VVthe first circumferential ap as the pocket is ad-' p-15 means for opening said openable sides -as the articleand wrapper enter the pocket, a folder blade movable to fold t a' rst circumferential ap of the wrapper, means forin-A vanced to asecond station during rotation of-the head,
push-out means .entering said head through said ring' andv having means located in the space between said disc andsaid. ring, saidfmeans beingmovable through said pockets to push',the-partlywrappedvarticle outof-the head aty a. still-l furtherllstation,A said cammeans oper'iingthe open able-sides ofthe pocket as .said pushout meansy pushes an f article outof said head,f'folder blades 4for folding the seeond end i a'ps of the wrapper- Yas the i package gis so pushed, means for moving the @articles thereafter, means forfold-- ing fthe thirdt'and Vfourth :end'aps of the Wrapperas tit? k is Imoved byisaidflastmeans, said-cam means, said folder blades, said means `for `intermittently rotating said head,
saidpush-out` means land said last means beingjoperatedirial accordancetwithlfthe/cyclesfoffoperation ofthe wrappingA @12. A' wrapping machine comprising 'a l wrapping head comprising a disc-supported forrotation, a ringispa cedf40- therefrom, #cross f membersL connectinglisad f ring@ to, :saidfJ -f di'sycircumferentially spaced pockets ybetweengsaicidisc aiidiiringjto receivearticles and wrappers therefor,-eachfr ofsaid'pocke'ts havinga pair of' endsfianda pair of sides* 'f and-beir`1g=` openable` to receive an article'fand Ya wrapperl therefor, atleast one-.of said sides -having an inturne'd flange'to -hold 'the articleand wrapperyin the pocket,
meansfor' moving vthe article and Wrapper into Vthepocket at'agiirst stationio'f said head,saidends -foldingthe first fenda'pw the Wrapper,wvrapper hold-downmeans lol cated inthe space between saiddisc and said ring and movable-through a pocket'of said head at said first station push-the 'partly wrapped article out of the head at a last station thereof,"fold er blades for folding the second end apsfoftliewrapper as the package is so pushed, said cam means vopening the pocket at said last station, take-out conveyor-means for'moving Athe articles thereafter, and' thirdv and -fourth -end `ap folder' blades Lfor folding the thirdand fourth end ap's' of thewrapper as it ismoved by-'said take-out conveyor means.
References Cited in the ile of this patent c UNITED STATES PATENTS 1,084,593 Escobales Ian.. 13,1914 1,964,411;` Beutel June 26, 1934 "7' 15965321" Smith4 July, 1934'- 2,037,631n Hultin Apr. 14, 1936'. 2,400,682A Bronander- May 2l,` 1946I 2,590,127 Sandberg Mar. 25, 1952- Malhiot July 15, 1952*