US2893294A - Bag lining and cuffing machine - Google Patents

Bag lining and cuffing machine Download PDF

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US2893294A
US2893294A US732473A US73247358A US2893294A US 2893294 A US2893294 A US 2893294A US 732473 A US732473 A US 732473A US 73247358 A US73247358 A US 73247358A US 2893294 A US2893294 A US 2893294A
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bag
arms
arm
sleeves
projecting
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US732473A
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Lawrence V Eaton
James A Kane
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COLONY FOODS PRODUCTS Inc
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COLONY FOODS PRODUCTS Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/10Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00Construction of flexible containers
    • B31B2170/20Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • B31B2170/202Construction of flexible containers having multi-layered walls, e.g. laminated or lined having liners applied in already made bags, e.g. including turning the bags inside out

Definitions

  • the principal objects of :the present. invention Varelto provide'aneicient machine operative. to produce a lined" bag withthe;marginalportionsfof the mouth ofthe kliner or innerwbag cuiied ⁇ orfolded-oyer that of the outerv bag;
  • tog provideamachine for accomplishing this 'operation in.' the fraction of. the time-usually required by a skilled oper-.
  • atorguiandto provide a'machine whichpermitsa :much
  • ⁇ Fig. ⁇ 1 is a topfplanyiewfofaginachine constructedvin accordance. with the.r present invention
  • Fig.2 isa side .elevationofga machine ⁇ shownin Fig;
  • Fig. 3 is a perspective view illustrating the manner in. ⁇
  • FIG. 4 showsa'mouth portioniof theiiiiner. bagrcuiedr.
  • yFig.5 shows a completed Shag., j j, Ipnaccordance with the present yinvention we provide a semi-automatic machine for liningan outerbag iwithtudinal inward'moveme'nt-of the cutiing ⁇ operation, and the: release of the stretcher arms preparatory to removal oflthe cuffed outer :bag .which-may be accomplished manually or automatically.
  • a longitudinally movable bag stripper may be mountedbetween the stretching arms so that -itis enveloped'byth'e nested bags with its inner ends'engageable with the closed end of the innerbag and the drivemeans mayv act through suitable mechanism, such as a retracti able rack, to rnove the lstripper inwardly after the release of *.the stretching-arms, thereby :at least partly removing the cufed bagsfrornthe arm.
  • grippers-or the like conveyor means are brought into operation to remove thecuffed ⁇ bag from themachineLand-drop it at a coni.. venient place.
  • a-container comprises ,an outer bag 'v1 Q 4which is madeyfrom aheavy: creped kraft paper, the
  • s ogthat its .pro-Jv jecting ⁇ end ⁇ may.becutiedmor( folded over the open endl 0D ,nlQllfh/Of the @Hierbas- YTliefiilrletand Outer bags,y exceptfor length,rnay be andpreferably are substantially theY same' size,xbutathe outer-.bag .is preferably made of afheavy kraft, jute, 1burlap-orotherstr'ong material, while the Ain'nerbag ⁇ is made.. from. a flexible, slightly. stretchable spolyethylene or -ptherjlike material,
  • V,Our .machine comprises .a1-suitable ⁇ base yon stand ion whichy is mountedspaced bag-stretchingarm-s, which are relatively; movable ⁇ toward" and away frorn eachother froml arletracted' position, 'wherein the inner .bag andl an outer bag inay be ⁇ l'ppedabout them, vtofan. extended4 pssiioniwhefsin;
  • the particular machine, herein. shown.. comprises a ⁇ benchY orstand 1 (Figs. .l .and 2) of .conventional constructiomhaving longitudinal members 2 and y3 supported by legs 4,and 5.- ⁇ Securedtothe longitudinal membersz ,Furtherb'jectsvrelte tlvios features or ,constructand 3. .between the legs ⁇ 4,2,111d 5 is a vplatterm 6 having" a central longitudinally extending'slot 8, (Fig. l).
  • Iltlounted ongthe frontiofouter end of ythe platform 6 is'l awU-shapedtransversely extending'bracketfl (Figs. 1 j. and'Z) and -secured ⁇ tol one end of this bracketis the laterally oifsetend of a Xed arm, 12 ofgagenerally U-V member, shownvby the broken lines of Fig;
  • a bagstripper 28 1, 3r and A Betweeny the arms 12 land 14 is a bagstripper 28 1, 3r and A), the loopedA inner end of which lis slidably supportedfby a bearings() (Fig. 1) iiXed ,to theclosed end ⁇ f16'v ⁇ of the trarne member.y ',Ifhe outer Vor ⁇ forward- .erid otlthelstripper isf. slidably supportedbya .bushing f carriedby an upstanding web 22 secured to one end of a rack 34 which is slidably mounted between ways or guides 35 on the platform 6, these guides being aligned with theslot 8.
  • Apretractingrspring 36 (Fig. 1) connects a lug SS-(Fig. 1) carried by the rack with thebracket 10 so as to hold the rack and stripper in retracted position.
  • an inner bag or liner I may be'manually drawn about the arms and ⁇ stripper and an outer bag O may likewise be ldrawn over the inner bag I, as shown in Figs. l to 3. Since the inner bag is somewhatlonger than the outerbag its open end projects beyond that of the outer bag, as illustrated in Figs. l and 2, thus providing'a culling allowance.
  • the arm 141s vswung to extended position wherein it holds the nested bags in stretched, fixed position and when the pull onthe-rod 251is released the arm 14 is returned to retracted'positiom wherein ⁇ the grip on the nested bags Ais released so Vthat the stripper 28 may be brought into operation.
  • ysleeves 44 and 45 which are both s'lidable and rotatable on the rods.
  • compression springs 46 and 48 act on the inner support for the rods and Vthe inner end of the sleeves to hold the latter in outermost position against the outer support, as shown in Figs. l 'and 2.
  • the sleeves 44, 45 carry follower arms 50, 51 which project inwardly toward the stretcher arms and also upstanding lugs 52 and 53 to which are adjustably secured laterally extending cut-ling lingers 54 and 55.
  • Tension springs 56 and 57 (Fig.
  • the cams 58 and ⁇ 59 are mounted on the platform 6 inwardly of the guide rods and their outer ends have dwell portions over which the rollers of follower arms 50, 51 ride.
  • the construction and arrangement of parts are such that when the nested bags are held by Ithe stretcher arms 12 and 14, as shown in Figs.
  • the cutting lingers are spaced from but aligned with the edges of the inner bag between the prongs ofthe forks 20 and 21, and when the sleeves move inwardly the follower rolls contact the inclinesjof the cams at which point the cuihng lingers engage the inner bag and as the follower rolls ride up the inclines of the cams the sleeves and cufling Afingers are -rotated outwardly through a slight angle, thereby drawing the material of Vthe inner bag away from the forks to initiate the culling operation.
  • Fig. 2 which comprise a main drive shaft 60 suitably journaled in bearings (not shown) carried by the stand 1.
  • a sheave 61 Rotatably mounted adjacent to one end of the shaft 60 is a sheave 61 connected through a conventional one-revolutionpclutch 62V to the shaft 60.
  • the sheave 61 is connected by a V-belt 63- with one of the two sheaves 64 of a motor 65 which is mountedin a housing 66 secured to the stand 1.
  • sprockets 68 Keyed or otherwise secured to the shaft 60 are sprockets 68,
  • a follower lever 72 is pivotally supported at 74 to a depending arm 75 secured to the stand.
  • the inner end of this arm carries a follower roll and its outer end is connected by a clevis'to the lower end of the pull rod 2S.
  • the outer end of lever 72 adjacent to its connection with the pull rod 25 may carry a treadle rod 76 which may be manually operated by a treadle (not shown) if circumstances require manual operation of the stretcher arms.
  • Each drive comprises a downwardly inclined arm 78 which supports an idler sprocket 8tlaligned with the sprocket 68 and rotatably mounted on shafts carried by the stand are sprockets 81 -Vand 82 likewise aligned with sprocket 68.
  • a chain 84 extends about ⁇ the sprockets 68, 80-"82 passing along a slot (not shown) in the platform 6 and this chain carries two dogs 85 and 86 at tfhe half and full way points.
  • each of the dogs is L;shaped and positioned so as to engage the outer face of the adjacent follower arm, as illustrated in Fig. 3, 'and carry the associated sleeve inwardly along the guide rod 42, thereby compressing the spring 48.
  • Vthe dog 85 turns downwardly 'about the sprocket 82 it disengages the arm 51, thereby permitting the return of the sleeve under the influence of the spring 48.
  • a sprocket 88 is secured to the approximate center of the shaft 60 and this sprocket is connected by chain 90 to a sprocket 91 secured to shaft 92 (Figs. l and 2) which is journaled in ⁇ bearings (not shown) carried by the stand.
  • the sprockets 8S and 91 are the same size and hence one revolution of the former effects on revolution of the latter.
  • a segment gear 94 is fixed to the shaft 92, the construction and arrangement of parts being such that the periphery of the segments projects through the slot 8 sothat its teeth are engageable with the rack 34 to carry it from retracted position to bag stripping position.
  • cam 70, segment gear 94 and associated parts is such that the segment gear d'oes not come into operation until the roll of the follower arm 72 rides back on the dwell of cam 7l) oy which time the leading tooth of the segment gear makes contact with the rack and when the cam and sprocket have completed one revolution so also has the segment gear which comes to rest with its trailing tooth disengaged from the rack, as shown in Fig. 2.
  • the aforementioned sequence of operation is under the control of the clutch lock which comprises an arm 96 pivoted at its upper end to the stand'and this arm is connected to the plunger o f a solenoid 98 carried by a bracket secured to the stand.
  • a tension spring 99 normally holds the arm 96 in locking position.
  • 'Ilhis solenoid is under the control of a manually operated switch 100 which momentarily closes the circuit to the solenoid when the lever 101 ispdepressed.
  • a conveyor carried by the inner end of the machine, as shown in Figs. 1 and 2.
  • This conveyor comprises a 'drive shaft 104, mounted in pillow blocks 105 Whichfarwewred am the reficalz iets @t1-these@ and; between the ends of ⁇ the shaft is a sheave 106 connected,v through Vfbelts 108to4thesecond,oflthe two sheavesl64 cfhendjf the shaftk 1'104"v and ink approximate alignment:Y lwithmthe l sprockets 1 ⁇ 68Qare of ⁇ rtheA motor ⁇ 65,! cent to drivefs'prockets 110,. ⁇
  • the conveyor continues to operate and when the stripper 28 has carried the closed end of the cuifed bag to a position above or beyond the shaft 114, then the lug 120 engages the projecting end of the reinforcement R to carry the bag along the guard rails and drop it at an appropriate place. All parts are now restored to original position and the operation is repeated.
  • An ordinary operator may produce as many as 3,000 bags per eight-hour day, as compared with less than half that amount by hand. Further advantages are that diiiiculties due to static are eliminated and liner bags of much lighter Weight may be used. Moreover, breakage or spoilage is reduced to a minimum.
  • Afbagflin'in'g and" ⁇ cuing machine comprising spaiedf ⁇ elongate"bagstretchingJ arms relatively movable toward: d andawaygfroni each other fr orna normalretracted posi# ⁇ den; Whre'in iheiinner 'afndfouter bags may be slipped;- about them, Vto ryan extendednposition, wherein said arms hold the bags "iny stretched iixe'd position with ⁇ the mouth portion ovft'helinner' bag projecting beyond that ofl the outer bagi" elongate'bars juktaposedto the eufng arms cuir-lng ngerslaterally'movable and longitudinallyV slidf ⁇ able on lsaid bars 4and engageable'with thetprojectinfg innerf end f portions of-the innerV bag, and means for isequentially extending f saidgarrns;I fthenimoving 'said'said
  • a bag lining andfcuiiing-machne comprising spaced? elongate bag-stretchingfarms relatively movabletoward and ⁇ away from leach other from? a normal retracted posi-3 tion, wherein the ⁇ inner'fand,outer vbags may be slipped" abouty them, to an extended posi-tion,"wherein said arms holdfthe bags in stretched iiXed position with the mouth; portionfof lthe'inner baglprojectingbeyond that of the ⁇ outerbag,” a bag stripping member between said arinsand movable inwardly to engagei'the closed endfof'thefinnerVv bag', elongate barsjuxtaposed'to the curling armsoufling ⁇ fingers longitudinally.'slidableon said bars and engageablei ⁇ with.
  • theginnergand outerlbags may,,beeslippedV about them, to an extended position, wherein said arms hold the bags in stretched fixed position with the mouth portion of the inner bag projecting beyond that of the outer bag, a bag stripping member between said arms and movable inwardly to engage the closed end of the inner bag, elongate
  • a bag lining and cuing machine comprising spaced [,111 'b agl'inlngl andfcuiling'lmachiiie comprising spaced," elongate" bas-Stretching ⁇ arms;relatively movable toward; ⁇ Y and away/'from 'eachother from anormal rt'ractdpsir” tion, wherein inner and outerbags may be rslipped about;V them, to an yextended position, wherein said arms hold the; ⁇ nested bags in Jst're'tchedlred positionwithfthe mouth por-f tio S.of the' innerbag'projecting beyond that of theouterr ⁇ ,”elsatefsuidesgiuXtapgsed to Said alms; C ing il-.i gers longitudinally lmovabl'e'on said guidesand engageable ⁇ Withthe projecting innernd portionsrffth 'inner bas;
  • balg-stretchingV arms relatively movable toward and awayfrorn each otherv fromanormal retracted position', wherein ⁇ the inner and outer bags may bejslipped about them, to an extended position, whereinfsaidiaiuns herd the bags kin strefched'xed-positien with the month portion of the inner Ibag projecting beyon'd that of the outer bag, elongate bans juxtaposed kto the cng'alrms, cin'g lfingers longitudinally slidable and 'pivotally mounted ⁇ to swing upwardlyvon saidba'rs, s'aid iingersbeing erigageable with the projectng inner end portions ⁇ of the inner bag'me ⁇ ans for sequentially extending said arms and thenV substantially sirnultane'ou's'lyfrnoying 'said fingers inwardly and swinging them 'upwardly so as 'to curl ⁇ 'said project
  • Abag liru'rigv and'cifiing' machine comprising a stand, agene'rall'y U-shaped fraine 'mounted above said stand with one armyixed -and its other arm pivoted to the closed end of the rame,"resilient means normally holdingv the pivotedarmdn retracted position, wherein inner bag and an outer bag may be slipped-about them, means for vmoving said pivoted arm to extended position, wherein the armshold the' bags in stretched fixed position with the mouth portion of the inner 'bag projecting beyond that of the outer bag, guide rods secured to the stand and extending longitudinally in spaced parallel relation to the arms when in extended position, sleeves slidably mounted 'on the outer ends of said rods, cufling fingers Ycarried by-said sleeves and projecting laterally inwardly so as to engage the projecting inner end portionsl of the intuer bag, resilient means normally holding said sleeves in outermost position, means' for sliding said sleeves inwardly so as to cuit said
  • a bag lining and cuiiing machine comprising a stand
  • a bag lining and cutting machine comprising a stand, a generally 'U-shaped v,frame mounted above said stand with one arm iixed and its other arm pivoted to the closed'end of theframe, lresilient means normally holding the pivoted arm inretractedposition, wherein an inner bag and an outer bag maybeslipped about them,means for moving s aid-pivoted arm to extended position, wherein the arms'hold the bags -in stretched xed position with the ,mouthportion of theinner 'bagprojectingbeyond that ofthe outer bag, bag stripping means slidably mounted between saidarms so'as -to engage the closed end of said inner ⁇ bag,guide rods securedto the stand and extending longitudinally in spaced parallel relation'to the arms when in extended position, sleeves slidably and rotatably mounted on the outer-'endsof said rods, cuing ngers carried by said-sleeves and -projecti-ng laterally inwardly so ⁇ as to engage the project
  • bag-stretching arms carry forked members engageable with the linner surface 'of the open end portion of the inner-'bagfandwsaid cuingfnge'rs engaged with the inner bag between the prongs of said forked members.

Description

2 Sheets-Sheet 1 L. V. EATON ET AL BAG LINING AND CUFFING MACHINE LAWRENCE v. EATON JAMES A. KANE July 7, 1959 Filed May 2, 1958 July 7, 1959 1 v. EATON ET AL 2,893,294
BAG LINING AND CUFFING MACHINE:
Filed May 2', 1958 2 Sheets-Sheet 2 INV ENT ORS LAWRENCE V. EATON JAMES A. KANE BY KENWAY, JENNEY. WITTER & HILDRETH United States 2.1239352214@ l l, :BAG LNING AND MACHINE Lawrence; naam; Watan, :and-James A. Kane, Airing-1 u ton, Mass., assignorsrto Colony VFoods Products," Incg,
`Medf.o1"l`,.l Mass., corporation of Massachusetts nl. Applications/raya, russ, serial No. 732,473 l' 10claimetcma-sjg lnlpaclragingi various :types-of processed products to keept-themvfronir deterioration and protect them from 2,893,294 Patented July 19.59
heldin stretched" fixed position lwith the open vend or mouth portion of thefinner' bag projecting beyond that of theoute'rbag.`v Elongate guides'are juxtaposed to the arms-andmountedjon these guides'are laterally projecting vcurlingy fingers @which are longitudinally movable and normally positioned-to'engagethe inner end portions vof the innerk bag whenthey are moved inwardly. Preferably these culiing fingers are rotatablysupported so that-they undergo .a slight pivotal movement-as. `they move longitudinally, which aids ythe cuiiing-operation. Y
S Suitable driving meansto eiect'sequentially the movingof the stretching arms to extended position, the longiinjuryfduringwstorage `and 'transit rity is'the practice to crumplingorl collapsing Withinthe outer bag whenbeing lilled` with'l the processediproduct it'is ymade somewhat longer-'so thatitsmarginal portion'or itsrnouth or open end mayk beycuied or' foldedv oversA the;1nouth portion of.
the outer bag. This operation/is usually' performedby.
hand. and is la time-.consuming and `tediouslprocedure usually requiring ani experienced. operator in` vorder to 1avoid substantialwastagef.; .l :r 1 1.
. The principal objects of :the present. invention Varelto provide'aneicient machine operative. to produce a lined" bag withthe;marginalportionsfof the mouth ofthe kliner or innerwbag cuiied` orfolded-oyer that of the outerv bag;
togprovideamachine for accomplishing this 'operation in.' the fraction of. the time-usually required by a skilled oper-. atorguiandto provide a'machine whichpermitsa :much
lighter .weightrliner to 1 be fusedthanf would. otherwise be possible.f` v v tion and will' be apparentffromfa consideration of the. following descriptionv and the accompanying drawings, wherein;`
`Fig.\1 is a topfplanyiewfofaginachine constructedvin accordance. with the.r present invention; Y n
Fig.2 isa side .elevationofga machine `shownin Fig; Fig. 3 is a perspective view illustrating the manner in.`
whichl the `outer,hagaisgutted-abouti. the; innerA bag or linerpreparatoryfto cutting; y I I AFig. 4 showsa'mouth portioniof theiiiiner. bagrcuiedr.
over. the mouthportionof the outer .-bag; and, i t
yFig.5 shows a completed Shag., j j, Ipnaccordance with the present yinvention we provide a semi-automatic machine for liningan outerbag iwithtudinal inward'moveme'nt-of the cutiing `operation, and the: release of the stretcher arms preparatory to removal oflthe cuffed outer :bag .which-may be accomplished manually or automatically. Where automatic operation is desired, a longitudinally movable bag stripper may be mountedbetween the stretching arms so that -itis enveloped'byth'e nested bags with its inner ends'engageable with the closed end of the innerbag and the drivemeans mayv act through suitable mechanism, such as a retracti able rack, to rnove the lstripper inwardly after the release of *.the stretching-arms, thereby :at least partly removing the cufed bagsfrornthe arm. Thereafter grippers-or the like conveyor means are brought into operation to remove thecuffed `bag from themachineLand-drop it at a coni.. venient place. f
. The mechanism herein shown for Vthe purposeof illustrationis Vdesigned toproduce linedbags iny which sliced peeled potatoes are storedand shipped to hotels, restaurants, etcr Such" a-container comprises ,an outer bag 'v1 Q 4which is madeyfrom aheavy: creped kraft paper, the
closed end of which is provided with a reinforcement R` havingyits .opposite ends-projecting beyond the longi-v tudinal edges of the outer bag. Within theouter bag isy alin'er or innerv bag I Awhich, is of Va light gauge polyethylene, i-Such bags l.are commercially available in' ay permitsthe arm to, swingfrom retracted position, shown by the. full lines of Fig.g11,.to extendedlposition, shown` i an innerv bag whichis. somewhat longer s ogthat its .pro-Jv jecting` end` may.becutiedmor( folded over the open endl 0D ,nlQllfh/Of the @Hierbas- YTliefiilrletand Outer bags,y exceptfor length,rnay be andpreferably are substantially theY same' size,xbutathe outer-.bag .is preferably made of afheavy kraft, jute, 1burlap-orotherstr'ong material, while the Ain'nerbag `is made.. from. a flexible, slightly. stretchable spolyethylene or -ptherjlike material,
sheet `prnlaterial, such f which is relatively impervious to iluids. l,
V,Our .machine comprises .a1-suitable `base yon stand ion whichy is mountedspaced bag-stretchingarm-s, which are relatively; movable` toward" and away frorn eachother froml arletracted' position, 'wherein the inner .bag andl an outer bag inay be` l'ppedabout them, vtofan. extended4 pssiioniwhefsin;
j of the bracket 10. a 'tension-spring' 26 Widerangeofsizes. j l The particular machine, herein. shown.. comprises a` benchY orstand 1 (Figs. .l .and 2) of .conventional constructiomhaving longitudinal members 2 and y3 supported by legs 4,and 5.-` Securedtothe longitudinal membersz ,Furtherb'jectsvrelte tlvios features or ,constructand 3. .between the legs `4,2,111d 5 is a vplatterm 6 having" a central longitudinally extending'slot 8, (Fig. l).
.p Iltlounted ongthe frontiofouter end of ythe platform 6 is'l awU-shapedtransversely extending'bracketfl (Figs. 1 j. and'Z) and -secured `tol one end of this bracketis the laterally oifsetend of a Xed arm, 12 ofgagenerally U-V member, shownvby the broken lines of Fig;
shaped frame l2 The other arm 14-isrpivoted-at 15. to the closed end 1K6gof the frame ,member and its laterally otsetouter endJ is lheld down on the bracket 10 by a yoke18 which` bythebroken lines of Fig.V 1 and the fulllines of Figs. 3y and 4.- f
- `Outwardly oftheir offset portions the arms 12 and 14 carryvforkedmembersltlf and 2,1, theutility of which is` hereinafter explained. l'The ends-ofthe armsI 12 and 14 are pvotally connected to toggle'lines122 which; areA connected byarclevis 24 to a, pullirod`V (Fig.;.1) connects thearms so as normally to holdthem in retracted posi- @Steamer arid 9111er bagsar tion.'` A, downward pull on the` rod .25 f operates :thev` toggle so -as to swingthe arm 14 to extended position and when the pull on the toggle is released' the arm is returned to retracted position by therspring-Zt.` z
Betweeny the arms 12 land 14 is a bagstripper 28 1, 3r and A), the loopedA inner end of which lis slidably supportedfby a bearings() (Fig. 1) iiXed ,to theclosed end`f16'v`of the trarne member.y ',Ifhe outer Vor `forward- .erid otlthelstripper isf. slidably supportedbya .bushing f carriedby an upstanding web 22 secured to one end of a rack 34 which is slidably mounted between ways or guides 35 on the platform 6, these guides being aligned with theslot 8. Apretractingrspring 36 (Fig. 1) connects a lug SS-(Fig. 1) carried by the rack with thebracket 10 so as to hold the rack and stripper in retracted position.
With the construction and arrangement thus far described an inner bag or liner I may be'manually drawn about the arms and`stripper and an outer bag O may likewise be ldrawn over the inner bag I, as shown in Figs. l to 3. Since the inner bag is somewhatlonger than the outerbag its open end projects beyond that of the outer bag, as illustrated in Figs. l and 2, thus providing'a culling allowance. By pulling on the rod 25 the arm 141s vswung to extended position wherein it holds the nested bags in stretched, fixed position and when the pull onthe-rod 251is released the arm 14 is returned to retracted'positiom wherein `the grip on the nested bags Ais released so Vthat the stripper 28 may be brought into operation.
Mounted on the platform 6 in spaced relation to the arms 1 2 and "14 (when the latter is extended) are guide rods 41 and 42 and at the forward ends of these rods are ysleeves 44 and 45 which are both s'lidable and rotatable on the rods. Corresponding ends of compression springs 46 and 48 act on the inner support for the rods and Vthe inner end of the sleeves to hold the latter in outermost position against the outer support, as shown in Figs. l 'and 2. The sleeves 44, 45 carry follower arms 50, 51 which project inwardly toward the stretcher arms and also upstanding lugs 52 and 53 to which are adjustably secured laterally extending cut-ling lingers 54 and 55. Tension springs 56 and 57 (Fig. 1) connect the cutting arms 52 and 53 with lthe arm 12 and yoke 18, respectively, vand normally hold the culling arm in vertical Vposition with the follow rolls on the dwell portions ofcams 58 and 59 when the parts are retracted, as shown in Figs. 1 to 3. A
The cams 58 and`59 are mounted on the platform 6 inwardly of the guide rods and their outer ends have dwell portions over which the rollers of follower arms 50, 51 ride. The construction and arrangement of parts are such that when the nested bags are held by Ithe stretcher arms 12 and 14, as shown in Figs. l and 3, the cutting lingers are spaced from but aligned with the edges of the inner bag between the prongs ofthe forks 20 and 21, and when the sleeves move inwardly the follower rolls contact the inclinesjof the cams at which point the cuihng lingers engage the inner bag and as the follower rolls ride up the inclines of the cams the sleeves and cufling Afingers are -rotated outwardly through a slight angle, thereby drawing the material of Vthe inner bag away from the forks to initiate the culling operation. Continued inward movement of the sleeves causes the culling lingers to'roll or fold back the culling allowance C about theedge of the outer bag, thus completing the cufliing operation, at which point the lingers disengage thel culfed bag. Since these lingers are held tipped so long as the follower rolls ride on the throw or salient portions of theV cams, they remain disengaged from the nested bags and hence do not interferewith the return movement of the sleeves under the influence of springs 46 and Y48; and when the follower rolls ride down the cam inclines the springs 56 and 58 come into operation to restore theparts to their original position.
The sequential operations above described are effected by mechanisms best shown in Fig. 2, which comprise a main drive shaft 60 suitably journaled in bearings (not shown) carried by the stand 1. Rotatably mounted adjacent to one end of the shaft 60 is a sheave 61 connected through a conventional one-revolutionpclutch 62V to the shaft 60. The sheave 61 is connected by a V-belt 63- with one of the two sheaves 64 of a motor 65 which is mountedin a housing 66 secured to the stand 1. Keyed or otherwise secured to the shaft 60 are sprockets 68,
eadh positioned inwardly of a vertical plane tangent to the adjacent guide rod and between these sprockets and in approximate alignment with the pull rod is a plate cam 7l). A follower lever 72 is pivotally supported at 74 to a depending arm 75 secured to the stand. The inner end of this arm carries a follower roll and its outer end is connected by a clevis'to the lower end of the pull rod 2S. Hence, counterclockwise rotation of the cam causes the follower rod to ride up on the salient portion of the cam, thereby pulling the rod downwardly to extend the arm 14. If desired, the outer end of lever 72 adjacent to its connection with the pull rod 25 may carry a treadle rod 76 which may be manually operated by a treadle (not shown) if circumstances require manual operation of the stretcher arms.
Mounted adjacent to the opposite sides of the stand are identical drives for the sleeves 44 and 45 and a description of'one of the drives will therefore s'uce. Each drive comprises a downwardly inclined arm 78 which supports an idler sprocket 8tlaligned with the sprocket 68 and rotatably mounted on shafts carried by the stand are sprockets 81 -Vand 82 likewise aligned with sprocket 68. A chain 84 extends about `the sprockets 68, 80-"82 passing along a slot (not shown) in the platform 6 and this chain carries two dogs 85 and 86 at tfhe half and full way points. v*Each of the dogs is L;shaped and positioned so as to engage the outer face of the adjacent follower arm, as illustrated in Fig. 3, 'and carry the associated sleeve inwardly along the guide rod 42, thereby compressing the spring 48. As Vthe dog 85 turns downwardly 'about the sprocket 82 it disengages the arm 51, thereby permitting the return of the sleeve under the influence of the spring 48.
A sprocket 88 is secured to the approximate center of the shaft 60 and this sprocket is connected by chain 90 to a sprocket 91 secured to shaft 92 (Figs. l and 2) which is journaled in `bearings (not shown) carried by the stand. The sprockets 8S and 91 are the same size and hence one revolution of the former effects on revolution of the latter. A segment gear 94 is fixed to the shaft 92, the construction and arrangement of parts being such that the periphery of the segments projects through the slot 8 sothat its teeth are engageable with the rack 34 to carry it from retracted position to bag stripping position. The design of the cam 70, segment gear 94 and associated parts is such that the segment gear d'oes not come into operation until the roll of the follower arm 72 rides back on the dwell of cam 7l) oy which time the leading tooth of the segment gear makes contact with the rack and when the cam and sprocket have completed one revolution so also has the segment gear which comes to rest with its trailing tooth disengaged from the rack, as shown in Fig. 2. A
The aforementioned sequence of operation is under the control of the clutch lock which comprises an arm 96 pivoted at its upper end to the stand'and this arm is connected to the plunger o f a solenoid 98 carried by a bracket secured to the stand. A tension spring 99 normally holds the arm 96 in locking position. 'Ilhis solenoid is under the control of a manually operated switch 100 which momentarily closes the circuit to the solenoid when the lever 101 ispdepressed. Normally the arm 96 is in locking position wherein its holds the shaft 60 against rotation, but when the operator depresses the lever 101, thereby momentarily energizing the solenoid which pulls the arm 96 from locking position, whereupon the shaft 60 and parts carried thereby make one complete revolution, after which the arm 96 locks the clutch and shaft against further rotation. y
Since the stripper 28is effectiveV only partly to remove the cutfed bag from the stretcher arms, means are provided to effect ,complete removal from the machine and such means comprise a conveyor carried by the inner end of the machine, as shown in Figs. 1 and 2. This conveyor comprises a 'drive shaft 104, mounted in pillow blocks 105 Whichfarwewred am the reficalz iets @t1-these@ and; between the ends of `the shaft is a sheave 106 connected,v through Vfbelts 108to4thesecond,oflthe two sheavesl64 cfhendjf the shaftk 1'104"v and ink approximate alignment:Y lwithmthe l sprockets 1`68Qare of` rtheA motor `65,! cent to drivefs'prockets 110,.`
Carry' italong "fh, is drdpp'edfwm'fhesonv ment` of the cuifed" along'the'rails, a' horiz vided. f y g,
"A 'summary Vof th peratio loWsz-, 3tlg 1,", 14
l.Assuming that the operator has drawnftheiiner bagH overfthelinerfbag, that themotofrf65 is` runningjand that the p'artsare' 'as shown inFigs land?,theoperator'del1 presses? lthe switch levier--101f whlchfeffectsenergiition ofthe'solenoid`98and`release ofthe-clutch locking 96,; whereupon the fshaft`60mal esfone complete vrevolution after which the*tensinfspringfl99 rvstres'tlie lalrn96 t0: locking' position, thereby arresting rotation offthe'shaftl *60.1* Rotation of the' 1shaft- 60 -frbtates cani 70 whichicaus'esfthf ar'mY72.l to pull the rodi V25'fdov'vnwarc'lly so thatthe toggle links 22 swing the arm141toeXtendedposition whereinthe, in stretched ,fixed position,
4-As'the shaft @continuestoL rotateithei sprockets 68 drive' the chains 84"counterclockwisecausing the dogs 85" toleng'age ythey follower-arms '51, 4 `thereby 'to move` thev sleeves 44 and45 inwardly and cause the cutting fin'gers'Sd-vv and-554 to move1 inwardlyand upwardly.l #Continued f in- 1 ward movement, ofV the sleevesfas shownin Fig.if4,ucom-r pletes'thel z'cufiingoperation, whereuponthe dogs 85 disen-vv gage theffolloweryarms, permitting the springs-47'andi48; to return'thesleeves 44:and 45'zbacktozoriginal position@ 57 swing the;- d
50" After the shaft 60 has rotated 180fr'orgmore, theffol-,
and. at the same time. the :springs i 56'` and cuing fingersback toverticalpositiong. t
lower .farm 72 drops back` into -theadwell ofmthe -cam 11 70,
therebypermitting the spring 26to restore th'efarms- 12,1A and 14A to retractediposition; and'releasestheir grip'` on the` cuffed bag.,By thisxtimefthe sprocket 88fhas rotatedths?4 segment. vgear 1 9,4;so` thatjit engagesfthe rraclcliA to ,mQVr-it,
inwardly, thereby causing the looped end of the stripper 28 to push the cuifedbag partwyoff'fthe stretcher arms, as indicated by the dot and dash lines of Fig. l. As the shaft 60 completes its 360 revolution, the segment gear disengages the rack 34, thereby permitting the spring 36 to return it to retracted position.
In the meantime the conveyor continues to operate and when the stripper 28 has carried the closed end of the cuifed bag to a position above or beyond the shaft 114, then the lug 120 engages the projecting end of the reinforcement R to carry the bag along the guard rails and drop it at an appropriate place. All parts are now restored to original position and the operation is repeated.
An ordinary operator may produce as many as 3,000 bags per eight-hour day, as compared with less than half that amount by hand. Further advantages are that diiiiculties due to static are eliminated and liner bags of much lighter Weight may be used. Moreover, breakage or spoilage is reduced to a minimum.
. bag
pended claims. `We claim;
and means" frsequentially ending, Vsaid arms then,
'A Afbagflin'in'g and"`cuing machine comprising spaiedf` elongate"bagstretchingJ arms relatively movable toward: d andawaygfroni each other fr orna normalretracted posi#` den; Whre'in iheiinner 'afndfouter bags may be slipped;- about them, Vto ryan extendednposition, wherein said arms hold the bags "iny stretched iixe'd position with `the mouth portion ovft'helinner' bag projecting beyond that ofl the outer bagi" elongate'bars juktaposedto the eufng arms cuir-lng ngerslaterally'movable and longitudinallyV slidf` able on lsaid bars 4and engageable'with thetprojectinfg innerf end f portions of-the innerV bag, and means for isequentially extending f saidgarrns;I fthenimoving 'said' fingerslinwardly and vlaterallyfto 4cuffrsaid vprojecting ends aboutth'e endL portion {of the `outer bag andmoving' said;- arms to re'- t'ractedposition to permit'removal of thefcuifed bag.`
3. A bag lining andfcuiiing-machne comprising spaced? elongate bag-stretchingfarms relatively movabletoward and` away from leach other from? a normal retracted posi-3 tion, wherein the `inner'fand,outer vbags may be slipped" abouty them, to an extended posi-tion,"wherein said arms holdfthe bags in stretched iiXed position with the mouth; portionfof lthe'inner baglprojectingbeyond that of the` outerbag," a bag stripping member between said arinsand movable inwardly to engagei'the closed endfof'thefinnerVv bag', elongate barsjuxtaposed'to the curling armsoufling` fingers longitudinally.'slidableon said bars and engageablei` with. `the projecting inner end portions of the inner bag, i meansY for sequentially extendingsaid arms and thenmovf` ing said fingers yinwardly to cuf'said projeetinglends about. thefendportion of the outer-bagmeansfor releasing said; armand movinggthem toretracted position,:and mea'nslforf moving said stripping member, inwardly to disengage the cuffedbagpfromlthe outerportionof saidarm's;
tQnfzgWherein theginnergand outerlbags may,,beeslippedV about them, to an extended position, wherein said arms hold the bags in stretched fixed position with the mouth portion of the inner bag projecting beyond that of the outer bag, a bag stripping member between said arms and movable inwardly to engage the closed end of the inner bag, elongate |bars juxtaposed to the cufiing arms, cutting lingers longitudinally slidable on said bars and engageable 'with the projecting inner end portions of the inner bag, means for sequentially extending said arms and then moving said fingers inwardly to cuff said projecting ends about the end portion of the outer bag, means for releasing said arm and moving them to retracted position, and means for moving said stripping member inwardly to disengage the cuffed bag from the outer portion of said arms and means engageable with the closed end of the cutfed bag for removing it from said arms.
5. A bag lining and cuing machine comprising spaced [,111 'b agl'inlngl andfcuiling'lmachiiie comprising spaced," elongate" bas-Stretching `arms;relatively movable toward;` Y and away/'from 'eachother from anormal rt'ractdpsir" tion, wherein inner and outerbags may be rslipped about;V them, to an yextended position, wherein said arms hold the;` nested bags in Jst're'tchedlred positionwithfthe mouth por-f tio S.of the' innerbag'projecting beyond that of theouterr` ,"elsatefsuidesgiuXtapgsed to Said alms; C ing il-.i gers longitudinally lmovabl'e'on said guidesand engageable` Withthe projecting innernd portionsrffth 'inner bas;
elongate balg-stretchingV arms: relatively movable toward and awayfrorn each otherv fromanormal retracted position', wherein `the inner and outer bags may bejslipped about them, to an extended position, whereinfsaidiaiuns herd the bags kin strefched'xed-positien with the month portion of the inner Ibag projecting beyon'd that of the outer bag, elongate bans juxtaposed kto the cng'alrms, cin'g lfingers longitudinally slidable and 'pivotally mounted `to swing upwardlyvon saidba'rs, s'aid iingersbeing erigageable with the projetng inner end portions` of the inner bag'me`ans for sequentially extending said arms and thenV substantially sirnultane'ou's'lyfrnoying 'said fingers inwardly and swinging them 'upwardly so as 'to curl `'said projecting ends about the end portion of 'the outerfb'ag, and means forsequentially releasing said -arms andrerrr'iovir'ngY the V'cuted bag.
6. Abag liru'rigv and'cifiing' machine comprising a stand, agene'rall'y U-shaped fraine 'mounted above said stand with one armyixed -and its other arm pivoted to the closed end of the rame,"resilient means normally holdingv the pivotedarmdn retracted position, wherein inner bag and an outer bag may be slipped-about them, means for vmoving said pivoted arm to extended position, wherein the armshold the' bags in stretched fixed position with the mouth portion of the inner 'bag projecting beyond that of the outer bag, guide rods secured to the stand and extending longitudinally in spaced parallel relation to the arms when in extended position, sleeves slidably mounted 'on the outer ends of said rods, cufling fingers Ycarried by-said sleeves and projecting laterally inwardly so as to engage the projecting inner end portionsl of the intuer bag, resilient means normally holding said sleeves in outermost position, means' for sliding said sleeves inwardly so as to cuit said projecting ends about the end of the'outer bag, and 'means operative after the completion of the cuing operation to releasesaid arms so that the cuffed bagmay be removed. d
7. A bag lining and cuiiing machine comprising a stand,
a generally U-shaped frame mounted above said-stand` with one arm -xed and its. other arm pivoted to the closed end of the frame, resilient means normally holding the pivoted arm in retracted position, wherein an inner bag and ari-outer 'bag-may be slipped about them, means for moving said pivoted arm to extended position, wherein the ar-ms hold the bags in stretched `tixed position with the mouth portion of the inner bag Vprojecting beyond that ofthe 'outer tbag, guide rods secured to the stand and extending longitudinally'in spaced parallel relation to the arms when in extended position, sleeves slidably and rotatably inounted'on the outer ends of said rods, cung iingers carried by said sleeves and'projecting laterally inwardly so'as' to engage the projecting inner end portions of the inner bag, resilient means normally holding said sleeves 'in outermost position,` means for sliding said sleeves inwardly,f'and 'rotating them to swing said cuflingngers upwardly, thereby to cuit said projecting ends about the end ofthe outer bag, and means operativeafter the completionofthe cuiing operation to 8 release said arms "Sothatthe culled bag'may'be remio-vedr, rij-r. .it
8, v'Aljaig' liningtandcufling machinecomprising a stand, a.generallyU-shaped-fraine mounted above`said stand with `rone'armxe'd and' itsother Y arm pivotedto the closed end` ofmthe frame, resilient means normally holding Ythe *pivot'e'dj'arr'n in 'retracted position, `wherein an innerbag aridA an' outer bag may be slipped about them, means for moyin'gjslaid pivotedarm to extended position, wherein the arms jhold the' bags in stretched fixed position with the mouth portion of the inner bag projecting beyond that of the outer bag, baglstripping means slidably mounted between said arms so as to engage the closed endof -saidiiin'er Ybag, g1u`ide rods secured to the stand andextendn'g longitdinallyinspaced parallel relation to the'arms yWli'e'n'inextended position, sleeves slidably mounted on`the`oi1ter`ends of said rods, cuing fingers carried by said 'sleees and projecting laterally inwardly so' as to" engage"tl'1e projecting inner end portions of the inner Abag, resilientkmeans normally 'holding said sleeves inl outermost position, means for'sliding said sleeves infwardly so asto'cu'tf said projec'ting ends about the end of the outer bag, and means operative after the completion of thecuihng operation to release said arms and operate said bag stripping means so that the cuied bag may be removed. l
9. A bag lining and cutting machine comprising a stand, a generally 'U-shaped v,frame mounted above said stand with one arm iixed and its other arm pivoted to the closed'end of theframe, lresilient means normally holding the pivoted arm inretractedposition, wherein an inner bag and an outer bag maybeslipped about them,means for moving s aid-pivoted arm to extended position, wherein the arms'hold the bags -in stretched xed position with the ,mouthportion of theinner 'bagprojectingbeyond that ofthe outer bag, bag stripping means slidably mounted between saidarms so'as -to engage the closed end of said inner`bag,guide rods securedto the stand and extending longitudinally in spaced parallel relation'to the arms when in extended position, sleeves slidably and rotatably mounted on the outer-'endsof said rods, cuing ngers carried by said-sleeves and -projecti-ng laterally inwardly so`as to engage the projecting inner end portions of the in-n'er bag,` Vre's'ilientmeansV normally holding said sleeves in outermost position, means for sliding said sleeves inwardl'yand vrotating them 'to swing said cuing fingers upwardly, thereby to 'cutfsaid projecting ends about the end of the outer' bag,- 'and means operative after the completion of the-curling Aoperation to release said arms and operate said bagstrippi'ngmeansl so that the cuffed bagy may be removed.
l0. -Apparatus as set forthin: claim l, wherein said bag-stretching arms carry forked members engageable with the linner surface 'of the open end portion of the inner-'bagfandwsaid cuingfnge'rs engaged with the inner bag between the prongs of said forked members.
- No references cited.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060075A (en) * 1960-07-14 1962-10-23 Nat Distillers Chem Corp Method and apparatus for producing continuous bag stock
US3074325A (en) * 1962-04-05 1963-01-22 Chase Bag Company Plastic liner inserting machine
US3485421A (en) * 1968-04-10 1969-12-23 Kor It Co Inc The Method and apparatus for turning and lining bags
US3512338A (en) * 1965-12-10 1970-05-19 Richard F Nestler Packaging with plastic bags
US3513755A (en) * 1967-10-09 1970-05-26 Richard F Nestler Nested plastic bag production process and apparatus
DE1611648B1 (en) * 1968-02-15 1971-07-01 Basf Ag Method and device for gluing bags
US3796140A (en) * 1971-12-17 1974-03-12 Schjeldahl Co G T Bag loading mandrel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060075A (en) * 1960-07-14 1962-10-23 Nat Distillers Chem Corp Method and apparatus for producing continuous bag stock
US3074325A (en) * 1962-04-05 1963-01-22 Chase Bag Company Plastic liner inserting machine
US3512338A (en) * 1965-12-10 1970-05-19 Richard F Nestler Packaging with plastic bags
US3513755A (en) * 1967-10-09 1970-05-26 Richard F Nestler Nested plastic bag production process and apparatus
DE1611648B1 (en) * 1968-02-15 1971-07-01 Basf Ag Method and device for gluing bags
US3485421A (en) * 1968-04-10 1969-12-23 Kor It Co Inc The Method and apparatus for turning and lining bags
US3796140A (en) * 1971-12-17 1974-03-12 Schjeldahl Co G T Bag loading mandrel

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