SE203110C1

SE203110C1 -

Info

Publication number: SE203110C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: T Karder och S Brain Foreliggande uppfinning avs:er en .anordning vid forpackningsmaskiner fOr ,att astadkomma samtidig forsegling och klippning av forpackningarna vinkelratt mot forpackningarnas frammatningsriktning. Em anorclning enligt uppfinningeu är .sarskilt lamplig att anvandas vid maskiner av ,det slag, ilk tvarforseglin.g och isarklippning av s. k. strangforpaclmingar astadkommes medelst tva mot varandra anliggande, vridbara valsar med mantelytor, som aro utforda att bilda smala, parvis sanw.erkande forseglingszoner parallellt med valsarnas axlar, varvid i ena zonen av eft par samverkande zoner ett knivblad och i andra zonen ett motskar aro anordnade, straekande sig over zonernas hela langd. Inventors: T Karder and S Brain The present invention relates to a device in packaging machines for effecting simultaneous sealing and cutting of the packages perpendicular to the direction of feed of the packages. The anchoring according to the invention is particularly suitable for use in machines of the type which type of cross-sealing and ice-cutting of so-called strand packages are effected by means of two abutting, rotatable rollers with mantle surfaces, which challenge to form narrow, pair-like sealing zones. parallel to the axes of the rollers, wherein in one zone of a pair of cooperating zones a knife blade and in the other zone a counter aro are arranged, extending over the entire length of the zones.

En betydande olagenhet vid kanda maskiner av detta slag bestar dari, att valsarnas anliggningstryck mot forpackningsmaterialet minskas -vasentligt under klippningen, genom att knivbladet och motskaret upptaga en betydande del av anliggningstrycket, varvid fOrseglingen i narheten air ldippet kommer att bli clang. En kompensering genom Caning av anliggningstrycket mad det for klippningen erforderliga trycket medfor for ,stort anligg,- ningstryck pa valsarna under foriseglingsoperationen. A significant disadvantage of known machines of this kind is that the contact pressure of the rollers against the packaging material is substantially reduced during cutting, by the knife blade and the countercut taking up a significant part of the contact pressure, whereby the seal near the air outlet will become clang. A compensation by caning of the abutment pressure with the pressure required for the cutting results in a large abutment pressure on the rollers during the sealing operation.

Xmlarnalet med uppfinningen fir raft astadkomma en fOrpackningsmaskin -av ,angivet slag, vid vilken namnda ,olagenbeter aro undanrojcla p ett eukelt och tillforlitligt satt. Detta liar astadkommils. .darigenom att i enlighet .med uppfinningen ,knivbladen oeh/eller motskaren aro, anordnade rorliga I radiellt riktade .slitsar i valsarna, varvid den for klippningsoperationen erforderliga kraften WM:11'es ett I klippningslage befintligt knivblad och/ eller motskar via i maskinstativet anordnade kamytor. Valsarna komma harigenom att arbeta oberoende 'av knivblad 0th motskar .och kunna installas, for ett anliggningstryek, som är 15.mpligt for erhallande av en fullgod forsegling. 'Slid klippning tillfores en. harfor lampligtavrpas.sad kraft till knivblad 'och motskar via kamytorna utan att valsarnas antiggningstryck paverkas.. The object of the invention is to provide a packaging machine of the type indicated, in which the said illegitimate beetles are disposed of in a simple and reliable manner. This liar astadkommils. in that, in accordance with the invention, the knife blades and / or the counter are arranged in movable radially directed slots in the rollers, the force WM: 11 being required for the cutting operation being a knife blade present in the cutting layer and / or counter via via kamytor. The rollers thereby come to work independently of the knife blade 0th counter and can be installed, for an abutment pressure, which is obligatory for obtaining a good seal. 'Slide cutting is fed to one. has lampligtavrpas.sad force to knife blades' and counteracts via the cam surfaces without affecting the rollers antigging pressure ..

Vid en anordning enligt uppfinningen kan dessutom en nanskning av den for klippmingen erforderliga kraften erais .genom att balmbladen resp. ro.otskaren pa ett enkelt salt kunna bibringas en vickande rarelse yid klippning, varvid ender:a av dessa lampligen är med .siagt krokta eggar, sa aft ett knivbinds. och ett motskars eggar vid klippningen komma att tangera varandra i en punkt, som ph grand. av vickningsrorelse.n forskjutes utmed klippaingslinj en. In a device according to the invention, moreover, an examination of the force required for the cutting can be obtained by the balm leaves resp. ro.otskaren on a simple salt can be imparted a swaying rarity yid clipping, whereby one of these is suitably with .siagt crooked edges, so aft a knife-tied. and the edges of a counterpart at the mowing come to touch each other at a point, like ph grand. of rocking motion.n shifted along the cutting line one.

Pa bifogade ritning visas en sasom exampel maid utforingsform. air uppfinningen. Fig. 1 visar ett tvarsnitt genom valsarna med utanfor valsarnas andar belagria .armar for lag-ring am valsarna ,och kamytorna och fig. 2 visar en my ay det ena av valsarnas hada lika andpartier. The accompanying drawing shows an exemplary embodiment. air invention. Fig. 1 shows a cross-section through the rollers with outside the spirits of the rollers belagria arms for storage on the rollers, and the cam surfaces and Fig. 2 show a view of one of the rollers having equal duct portions.

De tva valsarna 1 och 2 aro, har anordnade Over varandra. Den undre 1 är vridbart anordnad .direkt i maskinstativet 3 medelst tva med stativet fast forbundna armar 4 pa Omse sidor am valsen, i vilka valsens axeltappar 5 aro. lagrade. Den owe valsens 2 axeltapp.ar 6 aro vridbart lagrade i tva pa &Ise sidor offla valsen ,anordnade .armar 7, vilka aro ledbart fastade vid maskinstativet 3 medelst axeln 8. Viii ,sarama axel 8 ar tva ytterligare pa Omse sidor am valsen. 2 belagna armar 9 ledbart Dupl. kL 81 a: 7/01 2203 1 fastade, vilka -vardera uppbara en kring axeln 10 vridbart lagrad tris,sa 11. Valsarna ,aro• utfarda mod mantelytor, som bilda parvis sainverkande forseglingszoner 12,, 13 och 14, °eh langs. zonernas mittlinjer aro, radiellt riktade .s.litsar 16,, 17, 18, 19 anordnade, som stracka .sig tvars, over valsarna. I slitsarnas 16 och 18 botten arc motskar 20 fast anordnade och i .slitsarna 17 och 19 Oro knivblad 21 med -utanfor valsens 2 andytor utskjutande andar - rOrligt anordnade. Arraarnas 6 och 9 fria andar are fjadrande forhundna med arniarna 4 medelst .dr.agstanger. 22 och 23 och tryckfladrar 24 och 25, varvid fj.adertryck.en aro reglerbara medelst muttrarna 26 °eh 27. The two rollers 1 and 2 aro, have arranged Over each other. The lower 1 is rotatably arranged directly in the machine frame 3 by means of two arms 4 fixedly connected to the frame on opposite sides of the roller, in which the shaft pins 5 of the roller are. stored. The axle pins 6 of the upper roller 2 are rotatably mounted on two sides of the roller, arranged arms 7, which are hingedly attached to the machine frame 3 by means of the shaft 8. Viii, the same shaft 8 are two further on the sides of the roller. 2 coated arms 9 articulated Dupl. kL 81 a: 7/01 2203 1 fastened, each of which carries a tris rotatably mounted around the shaft 10, sa 11. The rollers, aro • exit towards mantle surfaces, which form in pairs sain-acting sealing zones 12 ,, 13 and 14, ° eh along. the center lines of the zones are, radially directed. In the bottom arc of the slots 16 and 18, 20 are fixedly arranged, and in the slots 17 and 19 are arranged knife blades 21 with - projecting spirits outside the ends of the roller 2 - arranged neatly. The free spirits of the arrays 6 and 9 are resiliently preyed upon by the arniars 4 by means of dragon agstanger. 22 and 23 and pressure flaps 24 and 25, the spring pressures being adjustable by means of the nuts 26 ° eh 27.

Vid ,drivning av valsarna 1 .och 2 medelst en icke visad drivanordning frammatas en strang- med .samananha.n.gande forpackningar 28, mellan valsarna 1 och 2 synkront med valsarnas vridning genom att fi5rpacknings.materialets kantpartier pres.sas mellan valsarnas cylindriska andpartier. Valsarnas 1 och 2 radie och forseglingszonernas 12, 14 resp. 13, _15 antala.ro .sa avpassade, ,att fOrseglingar erhallas mitt emellan de enskilda farpackning.arna. Vid varje f&rseglhtg passerar ett kniv):dads 21 andar under trissorna 11, son' ,firo .placerade p .sadant avstand fran .axelns 7 _centrum, att knivbladet bringas till anligg_fling Mot ,clet harvid mitt, for knivbladet befintliga motskaret 20 .och av trissorna pressas mot detta under .fjadrarnas 25 sanamantryck:ning. When driving the rollers 1 and 2 by means of a drive device (not shown), a string of interconnecting packages 28 is produced, between the rollers 1 and 2, synchronous with the rotation of the rollers by pressing the edge portions of the packaging material between the cylindrical ends of the rollers. . The radii of the rollers 1 and 2 and the sealing zones 12, 14 and 13, _15 antala.ro .sa adapted,, that seals are obtained in the middle between the individual packages. At each seal a knife passes through the pulleys 11 under the pulleys 11, so placed at such a distance from the center of the shaft that the blade is brought into abutment against the center of the knife blade 20 and off. the pulleys are pressed against this under the joint pressure of the springs 25.

Vid den- visade utfoningsformen ar motAare:It 20 anordnade forsankta under resp. .forseglingszoners yta, vilket ytterligare underIalta.r .klippningsproceduren gen.om att fOrpackningsmaterialet, nar .det av knivIdadet 21 Itires ned mot motskaret 20 under samtidig fastkla.mning utmed slitsens 16, 18 kantlinjer, ..utsattes for strackning sanitidigt med klippningen. Det_ ar Oxen fordelaktigt am trissor_na 11 are anordnade forskjutna nagot relativt varondra i valsarnas vridning,sriktning, att knivhladen vidhibringas en vickande rorelse. Knivbladen eller motskaren Ore harvid lampligen .utfOrda svagt hojda, sa aft en ardiggningspunkt erhalles, som vid ett knivthlads viekningsrorelse fdrskjutes tva.rs Over forseglingszonen. In the form of embodiment shown, the opposite is arranged: The surface of the sealing zones, which is further subjected to the cutting procedure in that the packaging material, when the knife 21 is itired down towards the countercut 20 while simultaneously clamping along the edges 16, 18 of the slot, is subjected to sanitary stretching with the cutting. It is advantageous for the oxen to have the pulleys 11 arranged offset somewhat relative to each other in the rotation, direction of the rollers, so that the knife blades are subjected to a rocking movement. The knife blades or counterpart Ore are then suitably made of slightly high height, so that a fixing point is obtained, which in the case of a knife blade's bending motion is displaced twice over the sealing zone.

Uppfinningen Or sjalvfallet icke hegransad till den visade ntfaringsformen titan kan modifieras pa en mangd .olika satt inom ramen for .uppfinningen. Salunda kan i stallet for trissor 11 fast anordnade kamytor vara anordnade pa arinarna 9. Trissorna 11 .kanna amen vara utforda ,sont tvangsstyrda kamskivor for astadkomartande av en klippningshastighet, som ar otheroende av valsarnas vridningshastighet. Dessutom kan aven valsen 1 och motskaren 20 vara fjadrande lagrade pa motsvarande .saft, !slam visats fOr valsen 2 ach knivbladen 21. Vidare killina valsarna. Vid-behov vara anordnade .att utfora en train- °eh atergaende vridningsrorelse, exerapelvis vid f8rsegling och klippning av enskilda forpackningar, eventuellt i kombination med isarforande av valsarna under den atergaende vridningsrorelsen. The Invention If, of course, not limited to the illustrated embodiment, titanium can be modified in a variety of ways within the scope of the invention. Thus, in the place of pulleys 11, fixedly arranged cam surfaces can be arranged on the grooves 9. The pulleys 11 can be challenged, as forcibly controlled cam discs for providing a cutting speed which is independent of the rotational speed of the rollers. In addition, the roller 1 and the counter 20 can also be resiliently mounted on the corresponding juice, sludge is shown for the roller 2 and the knife blades 21. Furthermore, the roller lines. If necessary, be arranged to perform a train-like return rotation, for example when sealing and cutting individual packages, possibly in combination with ice-rolling of the rollers during the return rotation movement.

Claims

Patent claim:

1. Apparatus for packaging machines for simultaneous sealing and cutting of packages perpendicular to the frame feed direction of the packages by means of two triangular, rotatable rollers with jacket surfaces, which are designed to form narrow, pairwise cooperating sealing zones parallel to the rollers. pair of cooperating zones a knife blade and in the other zone a counter with an angle directed to the plane of the knife blade plane Worth arranged, & frac: kande spread over the entire length of the zones, can be characterized by the fact that the knife blades (21) and / or the counter (20) Radius-directed slots (16, 17, 18, 19) in the rollers (1, 2), the force required for the cutting operation being applied to a perforated edge is supplied with a knife blade (21) and / or a counter ( 20), the soul is in the cutting position, via the cam frame (11) acting on the ends of the machine arranged on their machine parts, and that they can act on a knife blade (21) or a counter (20). anytorna (11) aro inbordes forskubaa slightly in the direction of rotation of the rollers (1, 2) to produce a yielding motion lies the knife blades or the countercut when cutting, the motion.

Device according to claim 1, characterized in that the knife edge (21) and / or the counterpart. (20) Concerns arranged to slide outside the face surfaces of the rollers (1, 2) and with their outer ends affected by the cam surfaces (11).

Device according to claim 1 or 2, characterized in that the edges of the knife blades (21) or the counter (20) are slightly crooked in the plane of the slots.

Device according to one of Claims 1 to 3, characterized in that the bay surfaces (11) are arranged movable angular knobs against the plane of tangence of the rollers (1, 2) against the action of resilient members (24, 25).

5. Apparatus according to claim 4, characterized in that the baths of a roller, (1, 2) adjoining cam surfaces (11) are each attached to a spring-loaded arm (9), which arms Ore are mounted around one (5, 7) par, allell axel (8). G. Device according to claim 5, characterized in that at least one roller is mounted in two feather-loaded arms (6), which are mounted around the shaft (8), around which the arms of the camometers belonging to the roller are mounted.

Device according to claim 6, characterized in that the free spirits of the saintly arms (6, 9) are required that resilient members (24, 25) with installed spring force are fastened between resp. spirits and the machine stand or 'inellan ,, the spirits of, resp. pair of equal arms at the hada rollers.

7. Device according to nigot air patent claims 1-7, characterized in that the cam surfaces are constituted by freely rotatable pulleys (11), which are eccentrically mounted relatively resp. rollers (1, 2).

Device according to n, according to claim 1-7, characterized in that the cam surfaces (11) are formed by forcibly guided cam discs.

9. Order in accordance with: nAgot of previous patent claims, kanneteeknad (Limy, att motskaren. (20) aro, arranged forsankta i tillhorancle slitsar (16, 18). Request publications: Patentskrifter frdrt Schweiz 248 124; Tyskland 1 131 136; USA 1 006 753, 1 797 278, 2 246 957, 2 26263, 2 578 799, 2 762178, 2 951 325, 2 966 021.