SE187199C1

SE187199C1 - Device for sealing packages of cardboard or similar material with sealing strip

Info

Publication number: SE187199C1
Application number: SE615260A
Authority: SE
Original assignee: Od Vikar Christensson
Priority date: 1960-06-23
Filing date: 1960-06-23
Publication date: 1964-01-14
Also published as: GB934866A

Description

KLASS INTERNATIONELLSVENSK B 65 b81 a:6/01 PATENT- OCH REGISTRERINGSVERKET Ans. 6152/1960 den 23/6 1960Hartill tva ritningar 0 W CHRISTENSSON, BROMMA Anordning for forsegling av forpackningar av kartong eller liknande material med forseglingsremsa Foreliggande uppfinning avser en anordning for forsegling av forpackningar, t. ex. av wellpapp, med hj alp av forseglingsremsa. Darvid ror det sig orn shdana storre forpackningar, vilka vanligen dro utforda av en mer eller mindre styv kartong, foretradesvis, sasom redan ovan angivits, wellpapp, och som bestd av fyra sidor, i rektanguldr formation, var och en vid sin ovre resp. sin undre sida forsedd med en tillslutningsflik. Forslutningen av sadana fOrpackningar tillgar som bekant sO. att man forst yiker in tvâ varandra motsthende tillslutningsflikar sh. att dessa bilda de i forslutningen inre tillslutningsflikarna, och ddrefter viker ned de hada vid samma dude av forpackningen befintliga htersthende tillslutningsflikarna, sd. att dessa med sina fria overkanter ligga tatt intill varandra. Pd detta salt uppkommer mellan de hada yttre tillslutningsflikarna en langsgdende slits. CLASS INTERNATIONAL SWEDISH B 65 b81 a: 6/01 PATENT AND REGISTRATION AGENCY Ans. 6152/1960 of 23/6 1960To two drawings 0 W CHRISTENSSON, BROMMA Device for sealing packages of cardboard or similar material with sealing strip The present invention relates to a device for sealing packages, e.g. of corrugated cardboard, with hj alp of sealing strip. These are larger packages, which are usually challenged by a more or less rigid carton, preferably, as already stated above, corrugated cardboard, and consisting of four sides, in a rectangular gold formation, each at its upper resp. its lower side provided with a closing tab. The closure of such packages adds, as is well known, sO. that you first insert two opposite closing tabs sh. that these form the inner closing flaps in the closure, and then fold down the hatsthende closure flaps existing at the same dude of the package, sd. that these with their free upper edges lie taken next to each other. On this salt a longitudinal slit arises between the outer outer closing flaps.

Vid fOrseglingen av en Asian forslutning dr det brukligt att man anvander sd. kallad fOrseglingsremsa. Denna kan exempelvis besth av gummerat papper, av plastbelagt material sasom papper eller irav eller annat for andamd.- let lampligt material, som dock är remsformat. Den ifrhgavarande remsan av forseglingsmaterial anbringas ddrvid dtminstone Over den nyss namnda langsgAende slitsen mellan de hada yttre tillslutningsflikarna, vanligen sa, att den stracker sig fran ett ndgot nedanfOr resp. ovanfor (beroende ph am forpackningens Oversida eller undersida skall forslutas) resp. sida med en anfartg, darefter Over slitsen, och darefter utefter den vid slitsens bortre Made befintliga tvarsidan med en avslutning. Anfangen och avslutningen dro avsedda att fasta och sdkra forseglingsremsan vid forpackningens tvarsidor och daxigenom tilldela forpackningen i dess f8rslutna och forseglade tillsthnd Onskvard stadga. When sealing an Asian seal, it is customary to use sd. called Sealing Strip. This can, for example, consist of rubberized paper, of plastic-coated material such as paper or irav or other suitable material, which is, however, strip-shaped. The strip of sealing material in question is then applied, at least over the longitudinal slot just mentioned, between the outer closure flaps, usually so that it extends from something below resp. above (depending on the top or bottom of the packaging must be closed) resp. side with an anfartg, then Over the slot, and then along the existing side at the far Made of the slot with an end. The beginning and end were intended to fasten and secure the sealing strip to the transverse sides of the package and thereby assign the package in its sealed and sealed condition to Onskvard's charter.

Maskiner for genomforande av en sadan for- Dupl. kl. 54 a: 12; 81 b: 2 slutning dro i regel forsedda med en transportor fOr forpackningarna, medelst vilken dessa foras fram Over en bana. Banan passerar ddrvid ett st011e, vid vilket forseglingsremsan bringas att lagga sig Over slitsen mellan de hada yttre tillslutningsflikarna for att slutligen strykas till mot den motan:de och/eller slappande tvarsidan for bildande av anfangen resp. avslutningen, forsavitt icke Atminstone anfangen redan tidigare blivit nedstruken. Machines for carrying out such a pre- Dupl. at 54 a: 12; 81 b: 2 closure usually provided with a conveyor for the packages, by means of which these are conveyed over a web. The web then passes through a gap at which the sealing strip is caused to lie over the slot between the outer outer closing flaps to be finally ironed against the opposite and / or slack side for the formation of the catches resp. the end, forsavitt not Atminf anfangen already previously been deleted.

Vid shdana maskiner ror det sig praktiskt taget uteslutande am forpackningar, som dessforinnan forpackats med det material, som skall inneslutas i dem, varvid man anvant en sdrskild forpacknings- och/eller forslutningsmaskin, eller eventuellt foretagit fyllningen och/eller forslutningen air forpackningen for hand. Del kan ddrvid icke undvikas, att av de fyllda och forslutna men dnnu icke forseglade forpackningarna kan ske i en tamligen oregelbunden takt. A andra sidan viii man, att forseglingsmaskinen skall arbeta full-. standigt automatiskt, dvs. att forpackningen skall matas fram genom maskinen utan ingrepp i frammatningsrorelsen frAn maskinskotarens sida, och likaledes skall forseglingsremsan matas fram utan sadant ingrepp. In the case of such machines, it is practically exclusively the packaging which has previously been packed with the material to be enclosed in them, using a special packaging and / or sealing machine, or possibly the filling and / or sealing of the air packaging by hand. It can therefore not be avoided that the filled and sealed but not yet sealed packages can be made at a rather irregular rate. On the other hand, it is believed that the sealing machine must work fully. constantly automatically, ie. that the packaging shall be fed through the machine without intervention in the feed movement from the side of the machine forwarder, and likewise the sealing strip shall be fed without such intervention.

Om nu forseglingsremsan matas fram kontinuerligt, men av en eller annan anledning flagon fOrpacking icke skulle sta i tur att f8rseglas ph. grund av att den tidigare operationen (fyllningen och/eller forslutnin:gen) annu icke fortskridit tihlräckllgt langt, kunna allvarsamma komplikationer uppkomma. Pet Or ofta ett tdmligen start stycke forseglingsremsa, som dtgar for forsegling av varje sarskild forpackning, och om detta med vidhaftningsmodel (upplost gummi arabicum, bindemedelsplast e. d.) ph sin yta forsedda stycke skulle matas fram, utan att samtidigt anbringas ph. rdtt shit ph forpackningen, skulle en oredig hdrva av forseglingsmaterial komma att 2- 71199 — storande satt lagra sig i maskinen och med stOrsta sannolikhet astadkomma driftsavbrott. If now the sealing strip is fed continuously, but for one reason or another flake packaging would not be in line to be sealed ph. Due to the fact that the previous operation (filling and / or sealing) has not yet progressed sufficiently far, serious complications may arise. Pet Or often a tdmligen start piece of sealing strip, which dtgar for sealing of each particular package, and if this with adhesion model (dissolved rubber arabicum, binder plastic, etc.) ph its surface provided piece would be fed, without simultaneously applied ph. rdtt shit ph packaging, a faulty hdrva of sealing material would 2- 71199 - disturbing sat store in the machine and most likely cause downtime.

AN praktiska skal kan man icke mata fram forseglingsremsan I stycken, som aro av forutbestamd langd, utan man maste hamta forseglingsremsan fran eft Muhl, vanligen i form av en forradsrulle. Forseglingsremsan maste darfOr kapas av i ett eller annat sammanhang med dess applicerande pd forpackningen och for detta andamal fordras, att fOrseglingsrena, san är strackt. Men om flagon forpackning icke finnes bakom den nyss forseglade forpackningen, kan forseglingsremsan heller icke vara strackt, och avkapningen kan misslyckas, vilket ytterligare kan bidraga till amide av komplikationen i driftsstorningen. In practical cases, the sealing strip cannot be fed in pieces of predetermined length, but the sealing strip must be retrieved from after Muhl, usually in the form of a storage roll. The sealing strip must therefore be cut off in one or another context with its application to the package and for this purpose it is required that the sealing clean is stretched. However, if the flake package is not located behind the freshly sealed package, the sealing strip may not be stretched either, and the cutting may fail, which may further contribute to the amide of the complication of the operating failure.

Det är slutligen av betydelse, att man kan mata in forpackningar av varje sarskild, Mr det individuella andamalet lampad storlek. Dock bor h6jden pa forpackningen lampligen vara lika eller atminstone tillnarmelsevis lika, och likaledes bor slitsen mellan de hada yttre tillslutningsflikarna vara belagen pa samma eller atminstone tillnarmelsevis samma stalle i maskinens tvarriktning. Man blir da hanvisad till att bestdmma forpackningens storlek, da denna skall Tara variabel, genom andring av forpackningens langd i maskinens transportriktning. For den. skull maste sarskilda atgarder vidtagas for anpassning av forseglingsremsans langd efter storleken pa den i vart sarskilt fall genom maskinen passerande forpackningen. For en riktig funktion av dessa anordningar är det av vikt, att forpackningen efter att under maskinens arbete hava kornmit in under inflytande av maskinens verksamma delar, icke siannas i sin rOrelse utan kontinuerligt Ewes vidare, tills forseglingen dr fullbordad. Finally, it is important that you can enter packages of each individual size, Mr the individual andamal lamp size. However, the height of the package should be suitably equal or at least approximately equal, and likewise the slot between the outer outer flaps should be located at the same or at least approximately the same place in the transverse direction of the machine. You are then instructed to determine the size of the package, as this should be variable, by changing the length of the package in the direction of transport of the machine. For it. special measures must be taken to adjust the length of the sealing strip to the size of the packaging passing through the machine in each particular case. For the proper functioning of these devices, it is important that the packaging, after having been barred during the operation of the machine under the influence of the active parts of the machine, is not seen in its movement but continuously ewes further, until the sealing is completed.

Med hansyn till att forseglingsremsan av o-van angivna orsaker bOr matas fram 1 kontinuerligt fOrlopp och kapas av I anslutning till dess applicerande pa forpackningen, är det aven av betydelse, att en fOrpackning icke slappes fram genom maskinen, utan att sakerhet foreligger for att efterfoljande forpackning kommer att passera I ratt tur genom maskinen. In view of the fact that the sealing strip should be fed in a continuous process for reasons not stated above and cut off in connection with its application to the package, it is also important that a package is not released through the machine, without certainty being available for subsequent packaging will pass in turn through the machine.

Det ãr emellertid icke tillrackligt for crudentle av saker funktion, att den for tillfdllet forseglade forpackningen efterfoljes I raft fur av en annan forpackning, utan dessutom maste man aven veta, att denna efterfoljande forpackning i sin tur efterfoljes I ratt tur av en ytterligare forpackning. Anledningen hOrtill kan uttryckas pa foljande salt: Antag att en forsta forpackning, vilken vi i det foljande vilja benamna forpackningen A, matas in i maskinen, dar den underkastas forsegling av anfangen och sjalva slitsen. Innan avslutningen pa forseglingsremsan under tillslatning av forseglingsremsan kan fastas pa sin plats, maste synbarligen forseglingsremsan kapas ay. Denna shall darefter med sin genom avkapningen bildade nya, motande kant eller ande lagga sig an mot den mOtande tvarsidan pa en ytterligare forpackning, som vi i det foljande vilja beteckna som fOrpackningen B. Eljest uppkommer risk for komplikation genom att forseglingsremsan deformerar sig, t. ex. rullar sig, sd att den icke kommer i ratt kontaktld.ge i forhallande till den motande tvarsidan pa forpackningen. B. Men a andra sidan far man icke lata forpackningen B passera vidare till det laze, i vilket avkapning av forseglingsremsan skall dga rum, om man icke dessforinnan forvissat sig om att efter forpackningen B foljer en ytterligare forpackning, som vi i det foljande vilja beteckna som forpackningen C, ty eljest skulle de ovan namnda koMplikationerna intrada i samband med avkapningen av forseglingsremsan bakom forpackningen B. However, it is not sufficient for the crudentle of things to function, that the occasionally sealed package be followed by another package, but it is also necessary to know that this subsequent package is in turn followed in turn by an additional package. The reason for this can be expressed in the following salt: Assume that a first package, which we will hereinafter refer to as package A, is fed into the machine, where it is subjected to sealing by the starter and the slot itself. Before the end of the sealing strip during attachment of the sealing strip can be fixed in place, apparently the sealing strip must be cut ay. This shall then, with its new, receiving edge or spirit formed by the cutting, abut against the opposing transverse side of an additional package, which we will hereinafter refer to as the package B. Otherwise there is a risk of complication by the sealing strip deforming, e.g. ex. rolls so that it does not come into direct contact with the receiving opposite side of the package. B. But on the other hand, the package B must not be passed on to the laze in which the cutting strip is to be cut off, unless it has previously been ascertained that the package B is followed by an additional package, which we will hereinafter refer to as as the package C, because otherwise the above-mentioned complications would occur in connection with the cutting of the sealing strip behind the package B.

Del framgar av det ovanstaende, att det Mr storningsfri drift av maskinen for forsegling av forpackningar är av oundgdngligen erforderlig betydelse, att atminstone tva forpackningar, redan innan de fdras in till forseglingsmaskinens verksamma delar, befinna sig I tur efter varandra, sa att de kunna matas in pa rdtt avstand fran varandra, bestdmt av langden pa framforvarande forpackning, och vidare att av dessa forpackningar den ena vid tiden for avkapningen av fifkrseglingsremsan skall befinna sig fore avkapningsstallet, medan den andra forpadmingen vid samma tidpunkt skall befinna sig efter avkapningsstallet. It is apparent from the foregoing that the uninterrupted operation of the packaging sealing machine is of the utmost necessity that at least two packages, even before they are fed into the active parts of the sealing machine, are in turn in succession so that they can be fed. at a considerable distance from each other, determined by the length of the forward packaging, and furthermore that of these packages one at the time of the cutting of the sealing strip should be in front of the cutting site, while the other at the same time should be after the cutting site.

Det framgar emellertid Oxen, att det an av synnerligen stor fordel, om Even en tredje forpackning befinner sig i tur att matas in i maskinen i Mit lage i forhallande till de bada nyss namnda forpackningarna, dock efter den senare av dessa. It appears to Oxen, however, that it is of great advantage if Even a third package is in turn to be fed into the machine in My Law in relation to the two packages just mentioned, but after the latter of these.

Man kan na detta resultat pa principiellt tva' olika salt: For det forsta kan man valja maskinens arbetshastighet sa. lag, att, hum langsamt den forega.ende maskinella eller manuella operationen An ma forsigga, det ovan angivna villkoret dock alltid ar uppfyllt. Dena Ar givetvis icke nagon tekniskt tilltalande losning pa. problemet, eftersom ddrigenom den totala arbetskapaciteten i hela anlaggningen, vilken ju blir beroende av arbetskapaciteten pa den maskinenhet, som ham lagsta kapacitet, blir for lag. Den rdcker ju icke till for att omhandertaga de fOrpackningar, som redan passerat andra, tidigare steg i tillverkningskedjan. You can achieve this result on basically two different salts: First, you can choose the working speed of the machine so. law, that, hum slowly the previous mechanical or manual operation An ma forsigga, the above condition, however, is always met. Of course, this is not a technically appealing solution. the problem, because thereby the total working capacity of the entire plant, which of course becomes dependent on the working capacity of the machine unit with the lowest capacity, becomes too small. It is not enough to handle the packaging that has already passed other, earlier steps in the production chain.

For det andra kan man emellertid, och det fir detta som utgor uppfinningens karnpunkt, valja arbetshastigheten pa forseglingsmaskinen hogre an den hogsta arbetshastighet, som kan presteras i de narmast foregaende maskinella eller manuella operationema och genom sarskilda kanselorgan paverka medal Mr att tillfälligt stoppa maskinens arbete, sa snart de givna betingelsema icke aro uppfyllda- — —3 resp. fOr att aterigen starta maskinens arbete, sa snart betingelsetillstandet aterigen foreligger, och att darvid i raft avpassade lagen mata in forpackningarna till forseglingsmaskinen. Secondly, however, and this is the crux of the invention, the working speed of the sealing machine can be chosen higher than the highest working speed which can be performed in the most recent mechanical or manual operations and by special chancellery means to influence medal Mr to temporarily stop the work of the machine. as soon as the given conditions are not fulfilled- - —3 resp. to start the work of the machine again as soon as the condition condition is present again, and to thereby in the law-adapted law feed the packages to the sealing machine.

De nananda kanselorganen innehalla foretradesvis elektriska kontakter, som pa.verka en start- och stoppkrets for en maskinen drivande motor, men aven andra anordningar kunna forekomma, t. ex. kan man anordna en av de elektriska kontakterna paverkad magnetkoppling, som ryckes ur resp. in i funktionslage, i beroende av funktionen hos de namnda kontakterna. The nananda pulpit means preferably contain electrical contacts, which act on a starting and stopping circuit for a machine-driven motor, but other devices may also occur, e.g. one can arrange a magnetic coupling actuated by the electrical contacts, which is pulled out resp. into function mode, depending on the function of the named contacts.

Ytterligare .detaljer av uppfinningen komma att framgâ av nedanstaende beskrivning av ett valt utforingsexempel pa en forseglingsmaskin enligt uppfinningen. Det ar emellertid tydligt, att uppfinningen icke ãr begransad till detta sarskilda utforingsexempel, utan att olika modifikationer kunna forekomma inom uppfinningens ram. Further details of the invention will become apparent from the following description of a selected embodiment of a sealing machine according to the invention. It is clear, however, that the invention is not limited to this particular embodiment, but that various modifications may occur within the scope of the invention.

Pa ritningarna, till vilka den foljande beskrivningen av utforingsexemplet hanvisar, visar fig. 1 en principiell skiss till forklaring av uppfinningens huvaddrag, medan fig. 2 visar en detaljbild av en. forsta elektrisk kontaktanordning och fig. 3 visar en detaijbild av en andra elektrisk kontaktanordning. Fig. 4 visar en i anordningen enligt fig. 1 ingaende apparat for aterhallande av forpackningarna for forhindrande av deras fortidiga riirelse genom maskinen, och fig. 5 visar anordningen fOr tillforande av forseglingsremsa till forpackningarna. Fig. 6 visar anordningen for strackning och avskarning av forseglingsremsan mellan tva forpackningar, och fig. 7 visar slutligen ett elektriskt kopplingsschema Over anordningen enligt fig. 1. In the drawings, to which the following description of the exemplary embodiment refers, Fig. 1 shows a basic sketch for explaining the main features of the invention, while Fig. 2 shows a detailed view of one. first electrical contact device and Fig. 3 shows a detailed view of a second electrical contact device. Fig. 4 shows an apparatus included in the device according to Fig. 1 for holding back the packages for preventing their premature movement through the machine, and Fig. 5 shows the device for supplying a sealing strip to the packages. Fig. 6 shows the device for stretching and cutting the sealing strip between two packages, and Fig. 7 finally shows an electrical wiring diagram of the device according to Fig. 1.

I fig. 1 aterfinner man de tre ovan omnamnda fOrpackningarna A, B och C, vilka skola stâ i tur efter varandra, eller av vilka atminstone de tva forstnamnda A och B skola std i tur efter varandra f8r inmatning i maskinen, fOr att derma skall vara i gang. Man ser darvid, att forpackningarna A och B aro av inbordes olika storlek, medan forpackningen G kan vara antingen lika stor som endera av forpackningarna A eller B eller ocksa kan vara av ytterligare en storlek. Forpackningarna tillforas den egentliga forseglingsmaskinen Over en vantebana 10 i riktningen av pilen 11. Vantebanan kan exempelvis besta av ett antal rullar, som icke drivas, utan som erhalla sin rorelse darigenom, att forpackningarna skjutas fram over dem pa grund av trycket frau bakom varande forpackningar. Eventuellt kan rullbanan vara svagt lutande, sa att forpaekningarna av egen vikt bringas att rora sig i pilens 11 riktning. Fiirpackningen A kvarballes emellertid mot fortsatt rorelse av ett par hakar 12. Vid detta tillfalle har forpackningen A redan lamnat rullbanan och kommit in Over bandtransportoren 13, vilken ror sig i riktningen av pilen 14. ritningarna hava ytterligare ett par f Orpackningar visats, vilka befinna sig i rorelse genom den egentliga forseglingsmaskinen, namligen forpackningarna D, E ()eh F. Fig. 1 shows the three above-mentioned packages A, B and C, which are to be lined up one after the other, or of which at least the two first-named A and B are to be lined up one after the other for feeding into the machine, so that be up and running. It can be seen that the packages A and B are of different sizes on board, while the package G can be either as large as either of the packages A or B or can also be of an additional size. The packages are fed to the actual sealing machine Over a mitten web 10 in the direction of the arrow 11. The mitten web may, for example, consist of a number of rollers which are not driven, but which get their movement by pushing the packages over them due to the pressure behind the packages. Optionally, the roller conveyor may be slightly inclined, so that the packages of their own weight are caused to move in the direction of the arrow 11. However, the package A is retained against the continued movement of a pair of hooks 12. In this case, the package A has already left the roller conveyor and entered the belt conveyor 13, which moves in the direction of the arrow 14. The drawings have shown a further pair of packages, which are located in motion through the actual sealing machine, namely the packages D, E () eh F.

FOrpackningen D liar just kommit under inverkan av fOrseglingsverket, vilket i den schematiska fig. 1 antytts darigenom, att klisterremsan 15 angivits ford nedat i en liana i riktningen av pilen 16. Denna klisterremsa har redan anbragts Over slitsen pa fOrpackningen E samt Litt falla fritt nedat for bildande av en anfang 17 pa denna forpackning. Daremot har forseglingsremsan annu icke kapats av med hjalp av avkapningsanordningen 18 mellan forpackningarna D och E. Filjande steg i maskinens arbete irmebar i sjalva verket att fOrseglingsremsan kapas av, samt att anfangen och avslutningen p0. forseglingsremsan slatas till Over den motande resp. den slappande kortsidan pa forpackningen, vilket sker i det stadium, i vilket forpackningen E befinner sig. The package D has just come under the influence of the sealing plant, which in schematic Fig. 1 is indicated by the fact that the adhesive strip 15 is indicated downwards in a line in the direction of the arrow 16. This adhesive strip has already been applied over the slot on the package E and slightly falling freely downwards. to form an initial 17 on this package. On the other hand, the sealing strip has not yet been cut off with the aid of the cutting device 18 between the packages D and E. Filing steps in the work of the machine in fact mean that the sealing strip is cut off, and that the beginning and the end p0. the sealing strip is slid to Over the receiving resp. the slack short side of the package, which occurs at the stage in which the package E is.

Den kontinuerliga funktionsfoljden i maskinen kontrolleras medelst elektriska strOmbrytare, som i sin tur paverkas av forpackningarna. Dessa kontrollatgarder aro foljande : Strombrytare 19, 20 och foretradesvis aven 21 markera, cm atminstone forpackningarna A, B och G sta i tur for att forseglas i maskinen, Ar detta fallet, sa Hiles maskinens motor I gang, och transportoren 13 befinner sig i funktion. Skulle daremot det angivna det icke markeras av strombrytarna 19, 20 och eventuellt 21, sh stannas maskinens motor, och maskinen blir da staende exempelvis i det i fig. 1 visade laget. En strombrytare 22 slutes, forpackningens D bakre kant passerar ett givet lage, och foranleder da, att sparren 12 drages undan, sA att fOrpackningen A kan folja efter forpackningen D pa det givna avstand, som aven aterfinnes mellan bakre kanten pa forpackningen E och framre kanten pa RVpackningen D resp. mellan bakre kanten forpackningen F och framre kanten pa forpackningen E. Pa. detta satt forsattes forpackningen A i rorelse och kommer sa. smaningom in i det lage, som pa fig. 1 intages av forpackningen D. Forpackningen D trader i stallet for forpackningen E, och denna trader i stallet for forpackningen F. Pa grund av de olika forpackningarnas inbOrdes olika storlek kan det intraffa, att de icke befinna sig pa exakt de stallen, som angivas i fig. 1, men regelbundet markeras dock passerandet av deras bakre kanter forbi givna stallen av strombrytare sasom strombrytaren 22, vilka inleda givna funktioner. Salunda inleder strombrytaren 23 avkapningsanordningens 18 funktion, och strOmbrytaren 24 sluter funktionen for ned7 strykningen av avslutningen pa forseglingsremsan utefter den. slappande sidan pa forpackningen, Oval som eventuellt tillstrykning av hela forseglingsremsan. The continuous sequence of operations in the machine is controlled by means of electric switches, which in turn are affected by the packaging. These checkpoints are as follows: Switches 19, 20 and preferably also 21 mark, cm at least the packages A, B and G are in line to be sealed in the machine, Is this the case, said Hiles machine engine running, and the conveyor 13 is in operation . If, on the other hand, what is stated is not marked by the circuit breakers 19, 20 and possibly 21, sh the motor of the machine is stopped, and the machine will then stand for example in the layer shown in Fig. 1. A switch 22 closes, the rear edge of the package D passes a given layer, and then causes the ratchet 12 to be pulled away so that the package A can follow the package D at the given distance, which is also found between the rear edge of the package E and the front edge pa RVpackningen D resp. between the rear edge of the package F and the front edge of the package E. Pa. this set the packaging A continued in motion and will sa. gradually into the layer, which in Fig. 1 is occupied by the package D. The package D trades in the place of the package E, and this trades in the place of the package F. Due to the different size of the different packages, it may happen that they do not are located in exactly the stables shown in Fig. 1, but the passage of their trailing edges is regularly marked past given stables by circuit breakers such as circuit breaker 22, which initiate given functions. Thus, the circuit breaker 23 initiates the operation of the cutting device 18, and the circuit breaker 24 closes the function for the stripping of the end of the sealing strip along it. slack side of the package, Oval as a possible coating of the entire sealing strip.

Skulle under derma funktionsserie yid na- 4 got tillfalle icke de hada kontakterna 19 och 20 och foretradesvis aven kontakten 21 vara slutna, sa markerar delta, att icke langre tva. forpackningar A och B och Riretradesvis aven en tredje forpackning C sta i tar att matas in i forseglingsmaskinen, och for att man med full sakerhet skall undvika att maskinen gar i tomgang, i vilket fall komplikationer av ovan angivna slag skule kunna uppkomma, stannas maskinen i avvaktan pa att forpackningar i tillräckligt antal skola befinna sig pa vantebanan. Detta tillstand maste fran lid till annan uppkomma, eftersom det var en forutsattning, att forseglingsmaskinen har storre arbetskapacitet an den stOrsta arbetskapaciteten hos det narmast foreghende steget i tillverkningsprocessen. Kontakterna bora for den skull vara sâ fordelade utefter avvantningsbanan, att de oberoende av forpackningarnas storlek standigt markera det fulla antalet forpackningar. Man ser salunda att kontakterna 19 och 20 icke aro lika belagna i forhallande till fOrpackningarnas A och B motande sidor. Forpackningen A är en titan forpackning, under det att fOrpackningen B dr en stor forpackning. Avstandet skall vara sA stort, att dA forpackningen B trader i stallet for forpackningen A, den icke samtidigt skall kunna paverka bada kontakterna 19 och 20. Men dessutom bor avstandel vara sa litet, att aven om alla forpackningarna A, B och G yore av minsta forekommande storlek, var kontakt paverkas av en forpackning. I etta innebar, att aystandet melIan kontakterna 19, 20 och 21 skall vara minst lika stort som langden av den storsta forekommande forpackningen men icke stone On dubbla langden av den min sta forekommande forpackningen. Should during this series of functions in any case the had contacts 19 and 20 and preferably also the contact 21 be closed, then the delta marks, that no longer two. packages A and B and by way of return a third package C is to be fed into the sealing machine, and in order to avoid the machine idling with full certainty, in which case complications of the above kind may arise, the machine is stopped in while waiting for packages in sufficient numbers to be on the mitten. This condition must arise from time to time, since it was a prerequisite that the sealing machine has a larger working capacity than the largest working capacity of the nearest previous step in the manufacturing process. For this purpose, the contacts should be so distributed along the weaning path that, regardless of the size of the packages, they constantly mark the full number of packages. It can thus be seen that the contacts 19 and 20 are not equally coated in relation to the opposite sides of the packages A and B. Package A is a titanium package, while Package B carries a large package. The distance must be so large that when the package B is in place of the package A, it must not be able to affect both contacts 19 and 20 at the same time. But in addition, the distance should be so small that even if all the packages A, B and G are of the smallest occurring size, contact was affected by a package. This means that the distance between the contacts 19, 20 and 21 must be at least equal to the length of the largest packaging but not twice the length of the smallest packaging.

Efter denna allmanna beskrivnig av uppfinningens generella prineip, shall en detaljerad beskrivning lamnas over de olika i maskinen ingkende detaljerna. Following this general description of the general principles of the invention, a detailed description will be left of the various details known in the machine.

Fig. 2 visar schematiskt anordnande av var och en av kontakterna 19, 20 och 21. Ett antal av rullarna i rullbanan 10 aro i denna figur angivna med 25, 26 27 osv. PA dessa rullar ror sig en forpackning 28 i riktningen av pilen 29. Slitsen mellan de hada yttersta tillslutningsflikarna pa forpackningens 28 Oversida Or betecknad med 30. Under sin rorelse styres fiirpackningen med hjalp av ett par pa dess sidor anordnade skenor 31 rasp. 32. Pa lampligt valt stalle utefter den ena av dessa skettor, 1. ex. skenan 32, dr en bladfjader anordnad pa sadant salt, att den under endast mycket svag lutning stracker sig in i forpackningens 28 bana, sa som angives medelst bladfjadern 33. Vid dess ande paverkar den ett stift 34, som bildar manoverstift for strombrytaredosan 35, vars utgaende ledningar aro betecknade med 36. Fig. 2 schematically shows the arrangement of each of the contacts 19, 20 and 21. A number of the rollers in the roller track 10 are indicated in this figure by 25, 26 27 and so on. On these rollers a package 28 moves in the direction of the arrow 29. The slot between the had outer closing flaps on the upper side Or of the package 28 is denoted by 30. During its movement the package is guided by means of a pair of rails 31 arranged on its sides. 32. In an appropriately chosen place along one of these skettor, 1. ex. the rail 32, where a leaf spring is arranged on such a salt that it extends under only a very slight inclination into the path of the package 28, as indicated by the leaf spring 33. At its breath it acts on a pin 34, which forms the operating pin for the circuit breaker box 35, outgoing lines are denoted by 36.

Funktionen av denna anordning ar fbljande: Da f8rpackningen 28 passerar fjadern 33, pressar forpackningen denna fjader mot ske 7 199 — nan 32, och stiftet 34 pressas da. in i strombrytaredosan 35 for slutande av dess strombrytare, sa att kontakt uppkommer mellan de bada ledarna i ledningen 36. The function of this device is as follows: When the package 28 passes the spring 33, the package presses this spring against the spoon 7 199 - nan 32, and the pin 34 is then pressed. into the circuit breaker box 35 for closing its circuit breaker, so that contact occurs between the two conductors in the line 36.

I fig. 3 visas en av strombrytareanordningarna 22, 23, 24. En forpackning 37, vilken kan vara identisk med vilken som heist av forpackningarna D, E eller F, rat. sig Over banan i forseglingsmaskinen, representerad ay transportbandet 38, och rorelsen agar har liksom tidigare rum frail vanster till hoger, dvs. riktningen av pilen 39. Ovanfor forpackningens bana är en strombrytaredosa 40 anordnad. Denna ar sa utford, att dess manoverarm paverkar en vridbar axel 41. PA den yttre anden av denna axel sitter en paverkningsarm 42, som normalt slapar Over forpackningens 37 oversida men da fOrpackningen under sin rOraise kommit in i det i fig. 3 visade laget faller ned bakom forpackningen, sa att den kommer att vila mot ett still, 43. Sanatidigt slates genom axelns 41 vridningsrOrelse den elektriska kontakten i dosan 40 for att aterigen brytas, dO paverkningsarmen 42 lyftes upp i sitt normallage av nasta fOrpackning. Fig. 3 shows one of the circuit breaker devices 22, 23, 24. A package 37, which may be identical to any of the packages D, E or F, rat. sig Over the web in the sealing machine, represented ay the conveyor belt 38, and the rorelsen agar has as before rooms frail vanster to hoger, ie. the direction of the arrow 39. Above the path of the package a circuit breaker box 40 is arranged. This is so challenging that its control arm acts on a rotatable shaft 41. On the outer end of this shaft is a actuating arm 42 which normally slides over the upper side of the package 37 but when the package during its movement has entered the layer shown in Fig. 3 falls down behind the package, so that it will rest against a still, 43. At the same time, through the rotational movement of the shaft 41, the electrical contact in the box 40 is slid to be broken again, when the actuating arm 42 is lifted up in its normal position by the next package.

Pet antages att yid den beskrivna utfOringsformen av fOrseglingsmaskinen forpackningen skall samtidigt forseglas vid dess undre saval som vid dess ovre sida. I stoma drag aro de for andamalet nyttjade anordningarna spegelsymmetriska, men vissa smarre avvikelser frail den fullstandiga spegelsymmetrien foreligga dock. For klargorande harav kommer i del foljande var och en av detaljanordningarna att visas i sitt fullstandiga skick, ornfattande bade den owe och den undre anordningen. It is assumed that in the described embodiment of the sealing machine the package is to be sealed at its lower saliva at the same time as at its upper side. In general, the devices used for the purpose are mirror-symmetrical, but there are some minor deviations from the complete mirror symmetry. For clarification, each of the detail devices will be shown in their complete condition in the following section, including both the owe and the lower device.

Fig. 4 visar salunda apparaten for aterhallande av forpackningarna, cla de befinna sig det lage, som i fig. 1 angives av forpackningen A. Fig. 4 thus shows the apparatus for retrieving the packages, cla de being the layer indicated in Fig. 1 by the package A.

Ett antal rullar 44-48 utgOra de sista rilllarna i rullbanan 10, fig. 1. Med deras hjalp fores forpackningen Over till transportbandet 49, vilket Riper Over en viindrulle 50, vilken kan vara antingen den driyna eller den drivande rullen for det andlosa transportbandet 49. Dess ovre part uppbar forpackningarna, och for forhindrande av alltfor stark nedsjunkning Or denna part av transportbandet 49 uppstottat med ett antal fritt vridbara stOdrullar 51. For sakerstallande av jamnare transportrorelse Or i det visade utforingsexemplet Oven ett Owe transportband 52 jamte tillhOrande vandrulle 53 anordnat. En. forpackning Or antydd yid 54. Den halles i det visade laget tillbaka av tva hakformade organ 55, 56, anordnada pa armar 57, 58, vilka Oro vridbara kring axeltappar 59, 60. Armarna 57, 58 Oro foretradesvis utforda sasom vinkelhavarmar, och vid deras sidoriktade armar Oro dragfjadrar 61, 62 fasta, vilka strava att overfora aimarna till deras sparrande lagen. Vid de andar pa armarna 57, 58, som uppbara de hakformade organen 55, 56, aro aven ett par dragstanger 63, 64 fas- - - ta, vilka std i fOrbindelse med ankarena i ett par sugmagneter 65, 66. A number of rollers 44-48 form the last grooves in the roller conveyor 10, Fig. 1. With their aid the package Over is conveyed to the conveyor belt 49, which Riper Over a wine roller 50, which can be either the drive or the driving roller for the spiritless conveyor belt 49 Its upper part carried the packages, and in order to prevent excessive sinking, this part of the conveyor belt 49 is supported by a number of freely rotatable support rollers 51. One. packing Or indicated by 54. It is held back in the team shown by two hook-shaped members 55, 56, arranged on arms 57, 58, which are rotatable about pivot pins 59, 60. The arms 57, 58 are preferably challenged as angular arms, and at their lateral arms Oro tension springs 61, 62 fixed, which straw to transfer the aims to their sparring law. At the spirits on the arms 57, 58, which support the hook-shaped members 55, 56, there are also a pair of drawbars 63, 64 attached, which are in communication with the anchors in a pair of suction magnets 65, 66.

Man inser ornedelbart, att om dessa magneter magnetiseras, sa komma de att suga till sig sina ankaren, och fiiljden blir, att de bade hakarna 55, 56 lams ut ur forpackningens 54 bana, sa att denna kommer att medtagas av transportbanden 49 och 52 i dessas rorelse at hoger i figuren. Sedan den strompuls upphOrt, vilken foranledde hakarnas 55, 56 tillbakadragande och forpackningens frigivande for fortsatt rorelse, sla hakarna mot forpackningens ovre resp. undre sida under inverkan av fjadrarna 61 och 62, men dd forpackningarna am slata, kunna de lake hindra dem i deras riirelse. De atervanda ,darfOr lake till sina I figuren visade lagen forr an forpackningen 54 i sin helhet passerat, varefter de bromsa upp r8relsen hos nast foljande forpackning, tills denna kommer i tur att rora sig framat genom forseglingsmaskinen for att i denna folja pa ett avpassat avstand efter forpackningen 54. It is inseparably realized that if these magnets are magnetized, they will suck their anchors, and the result will be that the bath hooks 55, 56 will be paralyzed out of the path 54 of the package 54, so that this will be carried by the conveyor belts 49 and 52 in their rudder to hover in the figure. After the current pulse has ceased, which caused the retraction of the hooks 55, 56 and the release of the package for continued movement, the hooks strike the upper resp. lower side under the influence of the springs 61 and 62, but dd the packages am slata, the lake can hinder them in their riirelse. In the figure, the law shows before the package 54 has passed in its entirety, after which they slow down the movement of the next package, until it in turn moves forward through the sealing machine so that it follows at a suitable distance. after packaging 54.

Fig. 5 visar anordningen for tillforande av forseglingsremsan till forpackningen. En fOrpackning 67 passerar i denna figur fram mellan de hada transportbanden 68, 69. I verkligheten bestar vart och ett av dessa band av tva parallella banddelar pa visst transversellt avstand fran varandra, sa att sjalva slitsen melIan de bada yttre tillslutningsflikarna icke tAckes av banden utan blir tillgangligt for applicerande av forseglingsremsan. Denna hamtas fran en Ovre fOrradsrulle 70 och en undre forradsrulle 71 och 18per pa ovre sidan i form av fOrseglingsremsan 72 forbi en forsta styrrulle 73, en fuktningsrulle 74, vilken doppar ned i ett bad i ett trag 75, ett par styrrullar 76 och 77' av vilka den sistnamnda samtidigt tj anst- som antryckningsrulle mot fOrpackningens 67 iiversida, och Mier darefter med forpackningen. Antryckningsrullen 77' Sr for detta andamal lampligen monterad pa anden av en fjaderbelastad arm 77", vridbar kring en axeltapp 78. Pa motsvarande salt 18per den undre forseglingsremsan 79 ut frail fOrradsrullen 71 Over en forsta styrrulle 80, en anfuktningsrulle 81, som doppar ned i ett vatsketrag 82' samt mellan forpackningens 67 undersida och en antryckningsrulle 83, vilken sistnamnda ar lagrad pa en arm 84, som under fjaderbelastning Sr vridbar kring en axeltapp 85. Fig. 5 shows the device for supplying the sealing strip to the package. In this figure, a package 67 passes between the conveyor belts 68, 69. In reality, each of these belts consists of two parallel belt parts at a certain transverse distance from each other, so that the slot itself between the two outer closing flaps is not thanked by the belts but becomes available for application of the sealing strip. This is retrieved from an upper supply roll 70 and a lower supply roll 71 and 18per on the upper side in the form of the sealing strip 72 past a first guide roll 73, a dampening roll 74, which dips into a bath in a tray 75, a pair of guide rollers 76 and 77 '. of which the latter simultaneously serves as a pressure roller against the opposite side of the package 67, and Mier thereafter with the package. The pressure roller 77 'is for this purpose suitably mounted on the spirit of a spring-loaded arm 77 ", rotatable about a shaft pin 78. On the corresponding salt 18 the lower sealing strip 79 extends from the supply roller 71 over a first guide roller 80, a dampening roller 81, which dips into a drawer 82 'and between the underside of the package 67 and a pressure roller 83, the latter being mounted on an arm 84, which under spring load is rotatable about a shaft pin 85.

Del bor bemaans, att vid den nu beskrivna anordningen forseglingsremsan matas fram Over oversidan pa en forsta forpackning, t. ex. forpackningen E, fig. 1, da denna passerar under remsverket enligt fig. 5, samt darefter drages fram under forpackningarnas fortsatta rorelse utefter transportbanan, tills forseglingsremsan traffar oversidan av nista forpackning, i det valda exemplet salunda forpackningen D, fig. 1. Den kommer foljaktligen att 18pa som en .spand strang 86, se fig. 1, fran oversidan av forpackningen E till oversidan av forpackningen D, och den maste for den skull kapas ay. It should be borne in mind that in the device now described, the sealing strip is fed over the upper side of a first package, e.g. the package E, Fig. 1, as it passes under the belt according to Fig. 5, and then pulled forward during the continued movement of the packages along the transport path, until the sealing strip hits the top of the next package, in the selected example salunda the package D, Fig. 1. It will consequently to 18pa as a .spand string 86, see Fig. 1, from the upper side of the package E to the upper side of the package D, and the mast for that purpose is cut ay.

Detta sker i avkapningsverket, vilket visas i fig. 6. Avkapningsverket ombesorjer samtidigt preliminar tillstrykning av avslutningen pa forpackningen E och anfangen pa. forseglingsremsan D, pa satt som kommer att narmare klargOras i anslutning till fig. 6. This takes place in the cutting plant, which is shown in Fig. 6. The cutting plant simultaneously ensures preliminary coating of the end of the package E and the beginning of. the sealing strip D, in a manner which will be further elucidated in connection with Fig. 6.

I fig. 6 visas salunda tva fOrpackningar 87 och 88, vilka kunna identifieras med f8rpackningarna E resp. D i fig. 1. De framforas lik-: som tidigare mellan ett undre och ett Ovre transportband 68 resp. 69. Dikt mot undersidan av transportbandets 69 plan, men utan kontakt med detta transportband, eftersom del ju dr uppdelat i tva halfter, belagna pa var sin side om forseglingsremsan, ligger denna remsa, sá att den pa ritningen sammanfaller med undre kanten pa. transportbandet 69 resp. Owe kanten pa transportbandet 68. Den kniv, som anvandes for avkapningen av forseglingsremsan, an for det undre verkets vidkommande betecknad 89 och for det byre verkets vidkommande med 90. Knivarna aro monterade pa skaft 91 resp. 92, vilka aro vridbara kring mot forpackningarnas rorelseriktning vinkelrata. axeltappar 93, 94. Knivskaften Mins normalt i sina mot forseglingsremsans plan vinkelrata lagen, i vilka de a.ro ritade i fig. 6, medelst ett par fjadrar 95 resp. 96. Tapparna 93, 94 aro anordnade i ett par tvarstyelien 97, 98, vilka uppbaras av stanger 99, 100, som styras for vertikal fram- och Atergaende rorelse mellan styrtrissor 101 och 102 resp. 103 och 104. Stangerna 99, 100 sta under inflytande av var sin fjader 105, 106, som stravar att fora resp. stang 99, 100 till dennas frail forpackningen avlagsnade lage, dvs. for det undre verkets vidkommande neat och f6r det Owe verkets vidkommande uppat. Mot verkan av dessa fjadrar kunna emellertid stangerna 99, 100 jamte knivskaften 91, 92 och knivarna 89, 90 fOrskjutas till ingreppslage med forseglingsremsan, sa att denna kapas ay. For detta andamal ar undre anden pa den undre stangen 99 resp. o-vre anden pa den ovre stangen 100 forbunden med anden pa en havarm 107 resp. 108, vilken ãr -vridbar kring en tapp 109 resp. 110 under inverkan av dragstangen 111 resp. 112 till en sugmagnet 113 resp. 114. Fig. 6 thus shows two packages 87 and 88, which can be identified by the packages E and D in Fig. 1. They are conveyed as before between a lower and an upper conveyor belt 68 resp. 69. Poem towards the underside of the conveyor belt's 69 plane, but without contact with this conveyor belt, since part of it is divided into two halves, covered on each side of the sealing strip, this strip lies so that it in the drawing coincides with the lower edge of. conveyor belt 69 resp. The upper edge of the conveyor belt 68. The knife used for cutting the sealing strip is designated 89 for the lower part and 90 for the lower part. The knives are mounted on shaft 91 resp. 92, which are rotatable about perpendicular to the direction of movement of the packages. shaft pins 93, 94. The knife shafts are normally Mins in their layers perpendicular to the plane of the sealing strip, in which they a.ro drew in Fig. 6, by means of a pair of springs 95 resp. 96. The pins 93, 94 are arranged in a pair of transverse struts 97, 98, which are supported by rods 99, 100, which are guided for vertical reciprocating movement between guide rollers 101 and 102, respectively. 103 and 104. The rods 99, 100 stand under the influence of their respective springs 105, 106, which punish for fora resp. rod 99, 100 to its frail packaging removed layer, ie. for the relevant work of the lower work and for the relevant work of the Owe work upwards. Against the action of these springs, however, the rods 99, 100 together with the knife shafts 91, 92 and the knives 89, 90 can be displaced into engaging layers with the sealing strip, so that this is cut ay. For this purpose, the lower spirit on the lower rod is 99 resp. o-upper second on the upper rod 100 connected to second on a sea arm 107 resp. 108, which is rotatable about a pin 109 resp. 110 under the influence of the drawbar 111 resp. 112 to a suction magnet 113 resp. 114.

I hittills beskrivna ,delar fungerar anordningen enligt fig. 6 pa foljande satt: Vid det tillfalle, da strombrytaren 23, fig. 1, markerar, att forpackningen E alias forpackningen 88 kommit i det lage, att avkapning av forseglingsremsan lampligen bor Aga rum for att dess bada andar skola kunna omlaggas till att bilda avslutning pa forpackningen E alias 88 och anfang pa forpackningen D alias 87, slutes strOmmen genom lindningarna pa de hada sugmagneterna 113, 114, och dessa attrahera omedelbart sina resp. ankaren. Harigenom vridas armarna 107 och 108, och stangerna 99 och 100 jamte knivskaften 91 och 92 6 samt knivarna 89 och 90 forskjutas mot forseglingsremsan for dennas avkapande. Under tiden befinna sig ernellertid forpackningarna i kontinuerlig rörelse, och for den skull dr det nodvandigt att soda for att knivarna sporadiskt kunna folja forpackningarna i deras rOrelse, tills forseglingsremsan är halt avskuren. Det är for detta andamal, som knivskaften 91, 92 lagrats vridbara i rorelsens riktning mot verkan av fjadrarna 95, 96. Sd snart knivarna ingripit i remsan vid dennas ena kant, for vilket andamal knivarna foretradesvis dro fOrsedda med sneda eggar, dvs. eggar, som if:11.st borja skara av remsan vid dess ena kant for att under knivens fortsatta rorelse successivt skara av remsan anda till dess andra kant, boj as de alltsa at sidan kring vridningscentrum 93 resp. 94, tills remsan i sin helhet är avskuren, vid vilket tillf ãlle knivarna av fjoArarna 95, 96 aterigen forsattas i sina normallagen, samtidigt som de dragas tillbaka av fjadrarna 105, 106, i det av sugmagneterna 113, 114 nu blivit avmagnetiserade. In the parts described so far, the device according to Fig. 6 operates in the following manner: In the event that the circuit breaker 23, Fig. 1, indicates that the package E or the package 88 has come to the point that cutting off the sealing strip should suitably take place in order to its two spirits should be able to be rearranged to form the end of the package E alias 88 and the beginning of the package D alias 87, the current through the windings on the had suction magnets 113, 114 is closed, and these immediately attract their resp. the anchor. As a result, the arms 107 and 108 are rotated, and the rods 99 and 100 together with the knife shafts 91 and 92 and the knives 89 and 90 are displaced against the sealing strip for cutting it off. Meanwhile, however, the packages are in continuous motion, and for that reason it is necessary to soda so that the knives can sporadically follow the packages in their movement, until the sealing strip is completely cut off. It is for this purpose that the knife shafts 91, 92 are stored rotatable in the direction of the movement against the action of the springs 95, 96. As soon as the knives have intervened in the strip at one of its edges, for which purpose the knives preferably pull provided with oblique edges, i.e. edges, which if: 11.st begin to cut off the strip at its one edge so that during the continued movement of the knife successively cut off the strip anda to its other edge, they are thus bent at the side around the center of rotation 93 resp. 94, until the strip is cut off in its entirety, at which point the knives of the springs 95, 96 are again continued in their normal layers, at the same time as they are retracted by the springs 105, 106, in that the suction magnets 113, 114 have now been demagnetized.

De bada vid avkapningen uppkommande remsdndarna skola nu laggas an mot resp. tvarsidor pd. forpackningarna 87 och 88 sasom anfang pa den ena och avslutning pa den andra. Delta sker med hjalp av sarskilda organ, som manovreras med samma organ som knivarna. The two strip ends that arise during the cutting should now be applied to the resp. transverse pages pd. packages 87 and 88 as the beginning of one and the end of the other. Delta is done with the help of special organs, which are maneuvered with the same organs as the knives.

Pd tvarstyckena 97, 98 aro namligen for detta andamal anordnade var sina tva armar 115 och 116 resp. 117, 118, sa att armarna kunna svangas i plan, som aro parallella med forpackningarnas framforingsriktning. Armama aro utbildade som tvaarmade havstanger och de uppbara vid sina langarmsandar rullar 119, 120 resp. 121, 122, avsedda for tillslatning av remsandarna efter avkapningen mot fOrpackningarnas tvarsidor. Pd vardera sidan om resp. rullars banor aro ett par styrlinjaler 123, 124 resp. 125, 126 anordnade for att styra in rullarna till kontakt med remsandarna och tvarsidorna. Dessutom aro armarnas kortandar inbiirdes parvis f8rbundna medelst fjadrar 127, 128, vilka dels skola astadkomma erforderligt anliggningstryck mellan rullarna, a ena sidan, och forpackningarnas tvarsidor, a andra sidan, dels aven skola medgiva rullarnas foljerorelse i forhallande till forpackningarnas frammatningsrorelse i den kontinuerligt arbetande transportapparaten, har representerad av transportbanden 63, 69. On the crosspieces 97, 98, namely, two arms 115 and 116, respectively, are arranged for this purpose. 117, 118, said that the arms can be pivoted in planes which are parallel to the direction of advance of the packages. Armama aro trained as two-armed sea rods and those raised by their long-arm sands roll 119, 120 resp. 121, 122, intended for slicing the strip sands after cutting against the transverse sides of the packages. On each side of resp. roller paths aro a pair of guide rulers 123, 124 resp. 125, 126 arranged to guide the rollers into contact with the strip sands and the transverse sides. In addition, the short ends of the arms are interconnected in pairs by means of springs 127, 128, which on the one hand will provide the required abutment pressure between the rollers, on the one hand, and the transverse sides of the packages, on the other hand, and will also allow the rollers to move , has been represented by the conveyor belts 63, 69.

Det framgar av det ovanstdende, att °me: delbart efter forseglingsremsans avkapande rullarna 119-122 angripa var och en av dess fria andar for att frau forpackningens kant och utefter dess tvarsidor breda ut forseglingsremsans andar, sa att de fastas vid tvarsidorna. Omedelbart efter fullfOljande av denna funktion och i anslutning till knivarnas aterforande till sina vilolagen, dragas aven rullarna upp till sina viloldgen utanffir fOrpackningarnas banor. It will be seen from the foregoing that immediately after the cutting strip 119-122 is cut off, immediately attack each of its free spirits in order to spread the spirits of the sealing strip along the edge of the package and along its transverse sides so that they are attached to the transverse sides. Immediately after completing this function and in connection with the return of the knives to their resting layers, the rollers are also pulled up to their resting joints outside the paths of the packages.

Den omstandigheten, att forpackningen befinner sig i tamligen snabb rorelse at hoger, ritningarna under tiden for avslutningens och anfangens tillstrykning medelst rullarna 119-122, leder latt till att ett starkare tryck appliceras mellan rullarna 119 och 121, a ena sidan, samt de motande sidorna pa forpackningarna 87, A. andra sidan, an mellan rullama 120 och 122, A ena sidan, och de slap-panda sidorna pa forpackningarna 88, d andra sidan. Det intraffar darfor, att vidhaftningen mellan forseglingsremsans avslutning och den slappande sidan av forpackningen kan vara uderhaltig, och att en sarskild tillstrykning av denna slappande kant kan vara erforderlig. For detta andamal kan man anordna en sarskild tillstrykarerulle pa i och for sig kant salt, vilken ingriper, dA forpackningen kommer i det lage, i vilket I fig. 1 forpackningen F befinner sig. Funktionen av denna ytterligare tillstrykarerulle bestarnmes darvid av strombrytaren 24. The fact that the package is in a rather rapid motion at right angles, the drawings during the time of the finishing and the beginning of the coating by means of the rollers 119-122, easily leads to a stronger pressure being applied between the rollers 119 and 121, on one side, and the receiving sides on the packages 87, A. on the other side, between the rollers 120 and 122, A on one side, and the slack sides of the packages 88, d on the other side. It happens, therefore, that the adhesion between the end of the sealing strip and the slack side of the package may be unsightly, and that a special coating of this slack edge may be required. For this purpose it is possible to arrange a special applicator roller on per se edge salt, which engages when the package comes into the layer in which in Fig. 1 the package F is located. The function of this additional ironing roller is then determined by the circuit breaker 24.

I kopplingsschemat enligt fig. 7 ha de olika strombrytarna atergivits i samma Ege som fig. 1. Det har vidare for enkelhetens skull antagits, att transporthrbandet 13 drives medelst en med vandrullen 129 samverkande motor 130, vilken ritats som enfasvaxelstromsmotor med magntiseringslindningen 131. Stromkretsen for denna motor loper fran spanningsforande ledaren Over motorns faltlindning 131 och strOmbrytarena 21, 20 och 19 till nollledaren. Den haken 12 (55) pliverkande sugmagneten har schematiskt visats med 65. Dess stromkrets Riper frau spanningsledaren Over strombrytaren 22, sugmagneten 65 och ledaren 132 till jordledaren. Knivens sugmagnet har liksom i fig. 6 betecknats med 114, Dess stromkrets leder frail spanningsledaren Over sugmagneten 114 och kontakten 23 samt ledaren. 133 till jordledaren. Slutligen har den ytterligare tillstrykarerullen betecknats med 134. Den manovreras medelst en sugmagnet 135, vars stromkrets loper fran spanningsledaren Over strombrytaren 24, sugmagneten 135 och ledaren 136 till jordledaren. In the wiring diagram of Fig. 7, the various circuit breakers have been reproduced in the same Ege as Fig. 1. It has further been assumed for the sake of simplicity that the conveyor belt 13 is driven by a motor 130 cooperating with the water roller 129, which is designed as a single-phase AC motor with the magnetizing winding 131. this motor runs from the voltage-conducting conductor over the field winding 131 of the motor and the switches 21, 20 and 19 to the neutral conductor. The suction magnet of the hook 12 (55) is schematically shown with 65. Its circuit Riper frau the voltage conductor Over the circuit breaker 22, the suction magnet 65 and the conductor 132 to the earth conductor. The suction magnet of the knife has, as in Fig. 6, been denoted by 114. Its circuit leads frail the voltage conductor Over the suction magnet 114 and the contact 23 as well as the conductor. 133 to the earth conductor. Finally, the additional coil roller is designated 134. It is operated by means of a suction magnet 135, the circuit of which runs from the voltage conductor across the circuit breaker 24, the suction magnet 135 and the conductor 136 to the earth conductor.

Under hanvisning till fig. 7 kan anordningens verkningssatt i korthet beskrivas pa filljande salt: Det antages forst, att ett rikligt fOrrad av fOrpackningar i form av fOrpackningarna A, B och C finnas framfor masldnen, sO. all denna kan arbeta ostort under en tillracklig tidsrymd. Genom att strombrytarna 19, 20 °ch. 21 d.ro slutna i serie, sattes motor. 130-131 igang, och transportbandet borjar lOpa. Det antages vidare att vid detta tillffille ingen fOrpackning befinner sig pa de stallen, som mar-karats med forpackningarna D, E och F. Strombrytaren 22 dr foljaktligen sluten, och strom :Mores sugmagneten 65, sa att hakarna 12 dragas undan och den forsta forpack- — —7 ningen A slAppes fram. Denna kommer dt forst att astadkomma brytning av strombrytaren 22, varigenom hakarna 12 aterigen gripa in och stoppa rorelsen av narmast foljande forpackning, dvs. i detta fall forpackningen B. Medan den salunda framslappta forpackningen A intranger i det lage, som pa fig. 7 intages av forpackningen D, paborjas palaggningen av forseglingsremsan. Da forpackningen A till fullo intagit det lage, som pa fig. 7 intages av f8rpackningen D, har ratt avstand uppkommit mellan forpackningarna A och B, och foljaktligen skall nu forpackningen B slappas fram genom maskinen. Detta sker aven, ty strombrytarens 22 arm faller nu ned bakom forpackningen A, sluter strOmmen genom sugmagneten och slapper fram forpackningen B, som harefter genomloper sarnma behandling, som nyss forpackningen A utsattes for. Referring to Fig. 7, the mode of operation of the device can be briefly described on the filling salt: It is first assumed that an abundant supply of packages in the form of packages A, B and C is present in front of the mold, so. all this can work undisturbed for a sufficient period of time. By the circuit breakers 19, 20 ° ch. 21 d.ro closed in series, engine was set. 130-131 running, and the conveyor belt starts lOpa. It is further assumed that in this case no packaging is present in the stalls marked with the packages D, E and F. The circuit breaker 22 is consequently closed, and current: Mores suction magnet 65, so that the hooks 12 are pulled away and the first packaging - - —7 ningen A slAppes fram. This will first bring about the breaking of the circuit breaker 22, whereby the hooks 12 again engage and stop the movement of the next packaging, i.e. in this case the package B. While the well-advanced package A penetrates into the layer occupied by the package D in Fig. 7, the application of the sealing strip is started. Since the package A has fully occupied the layer, which in Fig. 7 is occupied by the package D, a right distance has arisen between the packages A and B, and consequently the package B must now be released through the machine. This also happens, because the arm of the circuit breaker 22 now falls down behind the package A, closes the current through the suction magnet and releases the package B, which then undergoes the same treatment to which the package A has just been subjected.

Under tiden kommer sa smaningom forpackningen A fram till det lage, som pa fig. 7 intages av forpackningen E, eller rattare sagt, oberoende av om de bada forpackningarna hava samma eller olika storlek kommer forpackningen A fram till ett lage, i vilket dess bakkant befinner sig pa det stalle, dar. pa ritningsfiguren 7, forpackningen E liar sin bakkant. I detta ogonblick skall avkapningen av farseglingsremsan aga rum, °eh sa sker aven, ty nu faller armen till str8mbrytaren 23 ned bakom forpackningen A, strombrytaren slutes, och knivens sugmagnet 114 magnetiseras. Meanwhile, the package A gradually arrives at the layer which in Fig. 7 is occupied by the package E, or rather, regardless of whether the two packages have the same or different size, the package A arrives at a layer in which its trailing edge is located. sig pa det stalle, dar. on drawing figure 7, the package E liar its back edge. At this moment the cutting of the farce sealing strip should take place, as is also the case, for now the arm of the circuit breaker 23 falls down behind the package A, the circuit breaker closes, and the suction magnet 114 of the knife is magnetized.

Nar sedermera forpackningen A kommer fram med sin bakkant i det lage, i vilket pa fig. 7 forpackningens F bakkant är belagen, markerar strambrytaren 24 att den efterfoljande tillslatningen av avslutningen pa farseglingsremsan Over forpackningen A skall aga rum. When the package A later appears with its trailing edge in the layer in which the trailing edge of the package F is coated in Fig. 7, the switch 24 indicates that the subsequent closing of the end of the sealing strip Above the package A should take place.

Pa detta satt har forst forpackningen A forts in i forseglingsmaskinen, dar den successivt genomloper de olika stadierna, därefter forpackningen B och darefter forpackningen C osv. Farr eller senare kommer emellertid eft tillstand att uppkomma, da strombrytaren 21 brytes, ty forutsattningen var ju, att fOrseglingsmaskinens arbetskapacitet var storre On produktionskapaciteten 1 narmast foregaende steg i produktionskedj an. DO strombrytaren 21 brytes, stannar drivmotorn 130-131, och hela anlaggningen avvaktar ankomsten av en ytterligare forpackning, som skall intaga forpackningens C plats pa fig. 7, innan anlaggningen any() startas. In this way, first the package A has continued into the sealing machine, where it successively goes through the different stages, then the package B and then the package C and so on. Sooner or later, however, the condition will arise when the circuit breaker 21 is broken, because the premise was that the working capacity of the sealing machine was greater. The production capacity in the nearest preceding step in the production chain. DO the circuit breaker 21 is broken, the drive motor 130-131 stops, and the whole plant awaits the arrival of an additional package, which is to take the place of the package C in Fig. 7, before the plant any () is started.

Pa detta sakerstaller man, att forseglingsmaskinen aldrig blir tom, och att foljaktligen de med tomgang forknippade olagenhetema icke kunna uppkomma. It is ensured that the sealing machine never becomes empty, and that consequently the ills associated with idling cannot arise.

Claims

Patent claim:

The present invention relates to a sealing machine for packaging made of cardboard or similar material of the kind provided with four sides, each of which is provided at the top and / or at the bottom with four closing flaps, of which two opposite flaps are intended to be folded in to form a hire closure and they had to be folded in afterwards to form an outer closure while leaving a gap between the flaps. The machine Or is arranged to seal this gap (30) with a sealing strip (16), the sealing strip Oven extending with a start resp. a closure one piece down for the receiving or the relaxing side of the package. The machine Or is provided with means (12) for locking the packages until the front package is left open, so that a given distance arises between the slack side of the front package and the opposite side of the back package. According to the invention, the machine is provided with a mitten web (10), connected to the pulpit means (19, 20, 21) for scanning, whether at least two and preferably three packages are present. pavantebanan (10) i avvaktan pa. to be let into the machine, and these chancel means are so united with the drive means for the machine that it is stopped, unless all the chancel means (19, 20, 21) in question mark the presence of the indicated number of packages (A, B, C) on the mitten track ( 10).

In the case of a sealing machine according to claim 1, the pulpit means consist of electrical contacts, which Oro arranged in connection with the mitten path, that they are affected by the packages (A, B, C) which are dangerous on the mitten path.

In a sealing machine according to patent claim 2, the electrical contacts (19, 20, 21) are connected in series.

In a sealing machine according to any one of the preceding patent claims, the locking means are formed to prevent a package (A) from passing into the sealing machine by one or more hooks (12), which under the influence of a means (65) for their temporary escape and the tread of the package (A) to the sealing machine.

In a sealing machine according to claim 4, the means for accidentally removing the suction magnets (65) of the hooks (12) are formed under the influence of an electrical circuit, in which a contact which is affected by the nearest package (D) in the sealing machine is formed.

In a sealing machine according to claim 5, the contact in the electrical circuit for the suction magnets is arranged so that it closes when the slack side of the nearest package (D) passes a given layer in the sealing machine.

In a sealing machine according to claim 6, the contact in the electrical circuit comprises a actuating arm (23), 8 which is arranged to normally slip over the upper surface of a package (D) but fall into the space behind the package, after it has passed the contact, in order to then mark the layer of the package (D).

In a sealing machine according to any one of the preceding patent claims, the means for advancing a package (A) to the sealing machine are arranged so as to release the package (A) for passage through the machine in such a selected case that the distance between the receiving side thereof packaging (A) and the slack side of the nearest package (D) are equal to the sum of the lengths at the beginning and end of the sealing strip.

In a sealing machine according to claim 8, a knife device is arranged for cutting the straight sealing strip between two successive packages (E, D), then the sealing strip (15) is attached to the latter package or a part of its 8 top side. 71 -

In a sealing machine according to claim 9, the knife device (18) stands under the influence of an electrical contact, which is automatically actuated by the preceding of the two packages (E), when its slack edge comes into a given layer.

In a farce sealing machine according to claim 11, the knife device (18) is combined with an applicator device (115-128) for ironing the spirits arising during the cutting on the sealing strip (86), so that one forms an end to the preceding of the hot packages ( E) and the other forms anfang pa '. the successor of the hada packages (D). Request publications: Patents fain Great Britain 671 585, 752 59 5.