US 2512074 A
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Description (OCR text may contain errors)
June 20, 1950 o. SANDBERG 2,512,074
PACKAGING MACHINE FCR CANDY,
CooxIEs, AND THE LIKE l 5 Sheets-Sheet l Filed Sept. 18, 1946 A maag@ fgj,
m Y S Iii l'li June 20, 1950 o. SANDBERG PACKAGING MACHINE FOR CAND COOKIES, AND THE LIKE Filed Sept. 18, 1946 5 Sheets-Sheet 2 Mw ,5. R. e Z m w QN l" -wwvfl V d QU W. a l M, -uw ,r v WV M dv. B llHn- June 20, 1950 o. sANDBERG 2,512,074
PACKAGING MACHINE FOR CANDY, COOKIES, AND THE LIKE Filed Sept. 18, 1946 5 Sheets-Sheet 3 l I?? El d, if if 55 i mnu-1m i 35 34 msnm* 11;
JIJ BOY V/wWw/n June 20, 1950 o. sANDBERG PACKAGING MACHINE FOR CANDY, cooxms, AND THE LIKE 5 Sheets-Sheet 4 Filed sept. 18, 194e INVENTOR 05647352 rzdagf BY .I une 20, 1950 o; sANDBl-:RG 2,512,074
PACKAGING MACHINE FOR CANDY, l COOKIES., AND THE LIKE Filed Sept. 18, 1946 5 Sheets-Sheet 5 INVENTOR. arfzd/Ag,
Patented June 20, 1950 PACKAGING MACHINE FOR CANDY,
COOKIES, AND THE LIKE Oscar Sandberg, Toledo, Ohio, assigner to Lynch Package Machinery Corporation, Toledo, Ohio, a corporation of Ohio r.application september 1s, 194e, serial No. 697,782
l Claim. 1
This invention relates to packaging machines for candy, cakes and the like, and particularly to the forming, cutting, and feeding of cards and boats usually placed underneath the article to be wrapped, primarily to facilitate wrappingv with cellophane, wax paper or the like.
Ordinarily, fiat, rectangular cardboard or heavy paper cards are used when candy bars, cakes or the like in one piece are wrapped in a single package, while so-called boats, which are merely heavy paper or cardboard strips bent to generally U-shaped form, are used when the candy or cakes to be wrapped in a single package are in several pieces and the single package is to be substantially rectangular in shape. Except for the shape of the cards and boats, however, the wrapping machine for wrapping either type of articles is substantially, and, in most cases, exactly the same and it is desirable, therefore, that the machine be easily changed for wrapping with either cards or boats, particularly ink view of the fact that such wrapping machines are rather costly, and manufacturers do not wish to buy two or more machines for wrapping the aforesaid two types of merchandise.
Furthermore, I have found that the cards and boats may be fed from a reel or spool of material and cut off with greater facility than feeding them from a stack, and while the present invention is not limited to such feeding, it is particularly adaptable thereto. The method of wrapping including feeding cards or boats from `a reel is fully disclosed and claimed in my copending application, Serial No. 722,149 for Method of wrapping articles filed January 15, 1947.
It is an object of this invention, therefore, to
provide improved mechanism for feeding cards. to a packaging machine for candy, cakesandv the like.
It is also an object-of the invention to'provide It is also an object of the invention to provideA novel and simple forming means for packagingv machine boats.` l 1 y i It is a further object of the invention toprovide improved means for cutting o iffboats and 7 aging machine' in which the articles to be wrapped vention consistsin the construction, arrangement ,2 cards for packaging' machine use and to insure proper feeding thereof to the pockets in the packare deposited.
It is also an object of the invention to provide improved and effective timed feeding and cutting mechanism'for such cards and boats, which is synchronized withthe conveyor for receiving and moving articles to be wrapped.
It is an additional object of the invention to provide feed rolls which are adaptable for feeding either cards or boats and which partially form the boats in a novel manner.
It is a further object of the invention to provide unique feeding means for strip material for forming cards or boats and particularly to provide for maintaining the strip material in tension between spaced sets of feed rolls at all times, thus insuringforming of cards and boats of proper length.
Itis still another` object of the invention to provide for adjustment of feed roll pressure and also to provide foradjustment of the boat folding mechanism and card mechanism for different size packages. f y
With these and other objects in View, my inand combination of the various lparts of my device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out infmy'claim and illustrated in the accompanying drawing, wherein:
Figure 1 is aside elevational view of' one side of the card and boat forming 'and feeding mechanism, with parts thereof in section and with the boat former attached;
Figure 2 is" a diagrammatic View of the drivin mechanism for the `card yand boat formingv and feeding mechanism;
Figure 3- is adetail viewofthe timing gears utilized in the machine;
Figure 4 is an end View of a strip of cardboard before it is formed into aboat; j f
" Figure 5 is a partial sectional view taken on linefV-V .of Figure 1` ofthe first feed rolls with a cardboard strip for forming a boat passing therethrough;
yFigure 6y is a side elevational view of the other side of the card and boat forming and feeding mechanism shown in Figure 1, with parts shown in section for yclarity :and with the boat formerv rolls with a strip therein folded to form a, boat and is taken on line VIII--VIII of Figure 6;
Figure 9 is a perspective View of a finished boat; Figure l is a iront view of the mechanism shown in Figures l and 6, the full lines illustrating the cutting knife. in the raisedposition and the dotted lines illustrating the cutting knifein:
the lowered position;
Figure 11 is a `partial view of the machine simi:- lar to Figure 1, with the knife in its lowermost position after cutting a boat olf the stripof. cardboard;
Figure 12 is a partial sectional viewftaken on line XII-XII of Figure Figures 13 and 14 are detail top and side views of one boat former guide;
Figure 15 is a top plan view of the feed mechanism and boat and card cutter;
Figure 16 is a partial top plan view of the discharge rolls.; and' card guideA attached: to r the mechanismin 'place of the :boat formenthe re-V mainder 'of the miechanismbeing identical .with` that shown in the preceding figures;
Figure 17`is affpar-tialsectionall view` taken on line XVII-XVII@ Figure 16 Figureflis' a vie'w of the card forming-attache ment ltaken on line XVIII--XVIII of Figure 17;- and Figure 19 is af diagrammatic perspective 4view of thegears; rollers, et cetera, for operatingthe.
card and boat forming and feed'mechanisrn.v
Referring `specirlcallyito the vdrawing forca ildetailed 'description' of the invention,` it is'frst to be noted 'that the 'mechanismdisclosedis `adapted to be associated with any'wrapping machine having travelling pockets or the like,V inwhich articlesv been used-herein,` asshown in Figure 2, sothat the manner ofA association and=timing of thefunctions' of the .present .invention with. the f. machine of f thea-foresaid `copending application willy 'befr motor 2t drives :afpinion'V gear 22 through a belt 23, whichpinion inv turn.
drivesL al gear `24v-on which: is mounted-'alf sprocket 25for'drivinga sprocket `Zimountedfon shaft' A second# sprocket-Y 21 is secured to shaft 95 and drives a^chain 28 which` rotates aiV sprocket 29 and `amant drive. shaft 3| havingai. main-1f drive.j gear" 32 L securedz'; thereto; which main drive gear drives theentirecardan'd.:
boatformiriglandffeedirrg-mechanisnrinfa manner hereinafter described.
Eeferri'grparticularly'fto'Figures 21, 65 105 11 and 15, it will be seen"thatfthef'entirefformingr and fedihgfmeclfanismtis mounted on structural bracket memberspgenerally indicated at 33; which are'inturn-mountdonibarsi3d and 34e:- The `bars f1 34 and 34a are supported by spaced uprightframef members 1-'(not` shown) which support' the LWrapping fmachine.
Mounted-on vone v end of f the fstructural' mem'- bers^ 33 adjacent lbar 34 are a'pluralityof pockets 35 moved in steps by a chain conveyor 36d.;-whiclr" is alsodrivenfrom shaft l5fin`v af mannerv shown the aforementionedfcopendin'g application.'
The mounting and drive of the pockets andithe chainconveyor forms no-part 'of thepresentn- In .that machine, `a main drive shaft l'95" d vention, and further description thereof is, therefore, deemed unnecessary.
The structural members 33 are curved upwardly at the right-hand end, as shown at 31 in Figures 1 and 15, and provide bearings 33 and 39 for upper and lower feed roll shafts/ l and 52 which rotate feed rolls 43. and M, respectively. This end of supporting members 33 also have bearing supports preferably screwed therein for a shaft 4B which has..a strip guide roll 41 thereon for guidingv` arstrip' of cardboard 43 from a freely rotatable reel 49, shown in Figure 2. The guide roll ,41 is suiciently wide to guide strips of cardboard,'whetherfboats or cards are to be formed.
The struetural-'members 33 likewise provide support through. uprights 52, for a base plate 5l, over which the strip 43 travels and on which boat forming guides, generally indicated at 53 and 56, or a card strip guide, generally indicated at 55, are mounted tin. a.: manner hereinafter described.
58,?1tov which av single intermediate gear 59 is` secured. A gear is lmounted on shaft 42 which meshes :Withggear 59 (see Figure 19) Ato drive Ythe feedfrollsf-M and'M; the gear llfdriving a gear 6 lv securedfto Afeed roll shaft 4 l One ofV the 'structural members 33, asbest.
shown irl-Figure 1,`provides a bearing 62 for shaft 3l offmain-drivingzgear.32 and sprocket 29. A
cam '163 `,.isfalso.v secfured-tofandz rotates with shaft 3| for operating afcuttingknife 95a, ina mannerY hereinafter zdescribec...
Also mounted on :zstructuralj4 members, 33 ad jacentsupportingfbar 34a-are a'pair of spaced-J bearingblocks; generallywindicated at v(ill, providing-bearings. `65 :and 166. for discharge vfeed rollt shafts l61 7and !682.which';rotate upper andilower.
blocks'fareadjustablelongitudinally offthe strip 411i` by .reasons-of slots'fmand bolts Elib, which secure'the '.blockgt. the .brackets 33, `thus enabling the device to fermiucardsfor boats of somewhat diilerent".lengtlrs;l The "lowerfeed roll shaft 68 haszasprocket :1f secured thereto, which is driven by'a chain 12iwhiclris :irrturn driven by a sprocket 13frotatedf1by feed rolls shaft y42; The upper dischargeffeed rollshaft 51 fhasfa vgear 14 thereon` which-meshes with" a..gear.15ffon the lower disek charge feed rollfshafttfand drives the same.
The#structuralfmembersf33 also provide spaced y bearings-for a shaft which has a gear 18' thereon drivenA by mainfgear 32, anda gea!` 19 thereon: which drives idler gear 59 and thereby Whenth'e feed rolls are not driven.
Referring-howto the rstfeed rolls 43 and 44, it'f willfbe-noted- 'that the lower feed roll 44 i is larger thanthe upper' feedroll'S and-is provided with spaced circumferential grooves 83. Tlievupper feed roll 43 isprovided wtih circumferential ridges 84 which-areereceived-in the grooves '83 of-'feed roll'44; asbest shownfin Fign ure5. W'hemcardsareto be cut, the strip of i 9, then the strip 43 extends past the grooves 'and'A ridges 1 83`-J and: 84 and a ,crease or indentation isformedfinfthe strip '48 alongv` the fold lines 86:
Furthermore, I the structural members S3 `provide-afsupport for a downwardly extendingstrap.5Ev,-.Which provides a bearing 51 for a shaftv It is also to be noted that the pressure exerted by the top roll 43 is adjustable by means of springs 8l and adjusting nuts 88, since the shaft 4| for the top roll is freely retained in slots 89, the bottoms of which form the bearings for shaft 4| and which shaft is pressed into' the slots 89 by spring pressure. The pressure exerted by feed roll 43 is preferably sufficient to tightly grip the strip 48 to prevent any slippage thereof, thus insuring that the length of each card or boat is uniform, and each boat is properly indented along the fold line.
The discharge feed rolls 80 and 'l0 are of substantially the same size and the lower roll 10 is substantially smooth. The upper roll 69, however, is provided with a central flat portion 9| and adjacent recessed portions 92 circumferentially thereof. When cards are being formed, the central flat portion 9| grips the strip between itself and bottom roll 10, andfeeds the cards to the pockets, as best shown in Figures 16 and 17. When boats 85 are being formed, however, they are folded in a manner hereinafter described so that the edges of the strip 48 are doubled over, as shown in Figure 8, and the doubled portion is received in the recessed portions 92 of the top discharge feed roll 69.
The top discharge feed roll 69 is also freely retained in a slot 90 in the bearing member 64 and springs 93 exert pressure on the feed roll 69, which pressure is adjustable by means of nuts v94. The gearing for the feed rolls 69 and 10 is arranged so that these rolls tend to deliver the strip 48 to the pockets 35 a trifle faster than the feed rolls 43 and 44 supply it, and the springs 93 are so adjusted to permit slight slippage of the feed rolls 69 and 10 relative to the strip 48, thus insuring that the cardboard strip between the feed rolls 43, 44 and 69, 10 is taut at all times. This is particularly important for forming boat 85, as will be apparent hereinafter.
A cutting knife 95a is pivotally mounted at 98a on one of the bearing members 64. and is yieldably held against the front face of the bearing blocks 64 by a bolt 91 and is biased by a spring 98. The knife 95 is positioned close to the strip outlet from the discharge feed rolls 69 and '|0, as is apparent in Figures l1 and 15, for example.
The cutting knife 95a is periodically lowered and raised by a lever pivotally supported on mounting bar 34, as shown at |02. An upright member |03 has its lower end pivotally secured at |04 to an intermediate portion of lever |0| and its upper end pivotally secured at |05 at an angle of 90 from the pivot |04. The end of lever 0| opposite pivot |02 is provided with a roller |06 which rides on cam 63. As cam 63 moves to lower positions, the lever |0| and knife 95a are lowered by gravity to effect cutting of strip 48 as it is discharged from rolls 69 and 10. The cutting knife is lat its lowermost position to cut strip 48 when the flat portions 8| and 82 of gears 32 and 18 are in engagement and the feed rolls, therefore, are at rest, as will be apparent from the position of these parts as shown in Figures 1, 10 and 11.
Referring now to Figures 13, 14 and 15, for example, for a detailed description of the boat former attachment, as stated before, it comprises primarily two guide fingers 54 and 55, which are provided with outwardly extending lugs |01 'having adjusting slots |08 therein. Bolts |09 extend through the slots I 08 and are screwed into the bed-plate 5I. The slots|08 provide adjustment for different width strips 48.
The guide fingers 54 and 55 are identical in shape and are formed with an outwardly flared surface which curves over into an inwardly flared surface ||2. As best shown in Figures 7 and 8, the indented strip 48 feeds into the outwardly flared portion l and is progressively bent or folded along the indentations until the material is doubled over, as shown .at ||3 in Figure 8. When the doubled strip is fed into a pocket 35 and cut off, the bent marginal portions spring upright due to the inherent flexibility of the cardboard material and assume the boat shape shown in Figure 9.
A strip hold-down plate I4 is positioned above the strip 48 as it passes between the boat formers 54 and 55 and is adjustably held in position as to height by two brackets ||5 having two studs and bars ||6 secured thereto and to the holddown plate H4. Vertical slots in brackets ||5, into which bars ||6 extend, provide for the aforesaid adjustment.
When it is desired to form cards instead of boats, the boat formers 54 and 55 and hold-down plate ||4 are removed, and a card guide ||8, shown in Figures 16 to 18 inclusive, is attached. The card former merely comprises a substantially flat sheet of metal which is screwed to bed plate 5| by screws I|9 and is provided with a trough |2| which converges into a guiding portion |22, the sides ofwhich are parallel. The strip 48 passes through the guiding portion |22 just before it reaches discharge feed rolls 69 and 10, thus insuring that the strip 48 will be centered and will be cut olf at right angles.
Operation of Figures 1 to 15 Referring now to Figures 1 to 15 inclusive for a description of the operation of the mechanism 'when boats are to be formed, the reel 49 of cardboard strip material 48 is set up on a suitable spindle and the strip material is manually threaded under guide roll 4l, then into feed rolls 43 and 44. The pressure on the feed rolls 43, 44 and 59, 'I0 is adjusted and the machine is started by energizing the motor 2|. The motor drives the various gears, pinions, sprockets and chains and power is transmitted through chain 28 and sprocket 29 to the main driving gear 32. Gear 32 is thereby rotated and rotates driven gear` 18 as long as the teeth of the two gears are in mesh, and does not drive gear 18 when the flat portions 8| and 82 are in engagement, thereby stopping the feed rolls 43, 44 and 69, 10, and preventing the strip 48 from moving at this time. The cam `83 is rotated continuously by the shaft 3| on which main gear 32 is mounted and knife 95a is moved up and down. The knife 95a. is in the cutting or down position at the time feed rolls 43, 44' and 69, 'l0 are stopped, thereby delivering a. boat 85 to each pocket 35. The conveyor Ichain 36 is also stopped at the time the feed rolls are and `when the knife cuts off a boat, it is delivered into pocket 35.
The actual forming of the boat 85 by boat formers 54 and 55 has already been described and need not be repeated again.
After the boat is in the pocket 35, the article to be wrapped is placed therein and is wrapped by suitable mechanism. Since the article feed and the wrapping form no part of the present invention, description thereof is unnecessary.
7, Operaticmf of Figuiesf: 16.' to 1 8..
` The operation of` the mechanism shown. in Figures k16" to 18 irrolusve, is exactly thesarne'as desoribecl'withrespectto Figures 1 tol5, except thatli'ezcardguide I'B'is utilizedand'knife Qa cuts off atdardsinsteadof boats `alld'delivers themlto'the pockets 35; Y
Some changes may loey made in the constructi'o'n and,A arrangement of `the parts fof myfpaclagngmacriinefor Candy', cakesand the like Without ldepfarting ornfthe Areal spirit and purposek ofinn"`y-inveritiongA land-it is rnv-intention to c'over-ibyv-iryclaim any mocliled` for-ins 'fof :"stru'cture' or'useo-'niechanical'equivalents which-may be reasonably included Withinft'leirfs'eopewithout s'familielid'gV any 4of the advantage/s thereof;
I claliin 'as my iinvention:
f'In l a packaging f machine, theA combination of a; moving lconveyor having-a vplurality oi=open` ehded LJ'-sl"ia1oed article receiving pockets, a source-fof4 supply oli:L continuous relatively rigid strip ymaterial Tand" a-,feed mechanisn'fi for efeecling said strip material fromsaidsource: ofsuprply -to saidfpoeketswln, the form of predetermined lfoldedvlengths; saidffeed mechanism -comprising; a-vset: of feed;-r0lls.reoeiving said strip material; fromH said v source and. provdedwith means for creasing-,said strip material longitudinally` to deneffo'ldingflinesn said strgip material, means yfor'bending the marginal edges of said strip materialrover;` uponthemselves alongsaid folding lines, discharge` rolls receiving said `iolded 8 strip rnaterial,H one i off said y"discharge rol-1s being formed 'with spaced peripheral grooves capable of lreceivinzg. said folds freely'sozthat traction on said folded. stripjmaterial by -sad grooved discharge rollis'exertedonlyiby the rollarea be-n tween said groovesymeans for. rotating VVsaid discharge rolls;v faster Jthan. said feed rolls, 'cutting means 'for' saidl stripfmaterial fadjacent said dis'- changef-rolls; Aand automatic means -forrclerating said cutting-means to mit sad'foldedstrp materialfiritopredetermined lengthsfas the strip material emerges from said discharge rolls; said di'schavge rolls being operative to deliver said folded' cutstripV material toV said receiving pockets;
REFERENCES f eITED Thefllowng references are of recordn the il'e "of '-this Y patent: f
UNITEDrATEs ,PATENTS l\umloe'r` Name Date 312,257' Cotton etal Feb. 17, 1885 4063971 Thompson July 1G, 1889 570,688' Ferres- Oct; 27, 1896 712,068 Inman "Oct, 28,- 1902 1,707,712; Cowgi11` 'Aprili2, 1929 2,110,'939. Qrstrom Mar. 15,- 1938.- 2,153,846v -Russell'etal April-11, 1939 2,324,393- Hohletal.- V July 13, 1943- 2,430,620 v Sandberg: Nov. 11,A 1947