IT202000012652A1 - "IMPROVED ROLL" - Google Patents

"IMPROVED ROLL" Download PDF

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Publication number
IT202000012652A1
IT202000012652A1 IT102020000012652A IT202000012652A IT202000012652A1 IT 202000012652 A1 IT202000012652 A1 IT 202000012652A1 IT 102020000012652 A IT102020000012652 A IT 102020000012652A IT 202000012652 A IT202000012652 A IT 202000012652A IT 202000012652 A1 IT202000012652 A1 IT 202000012652A1
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IT
Italy
Prior art keywords
roller
roll
rolling elements
rings
bearing
Prior art date
Application number
IT102020000012652A
Other languages
Italian (it)
Inventor
Andrea Berizzi
Cosimo Ricco
Original Assignee
Lyra Bearing S R L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lyra Bearing S R L filed Critical Lyra Bearing S R L
Priority to IT102020000012652A priority Critical patent/IT202000012652A1/en
Priority to PCT/IB2021/054468 priority patent/WO2021240332A1/en
Publication of IT202000012652A1 publication Critical patent/IT202000012652A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • F16C43/065—Placing rolling bodies in cages or bearings in cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/32—Balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B21D39/023—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors using rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/30—Folding the circumferential seam
    • B21D51/32—Folding the circumferential seam by rolling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/185—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00—Apparatus used in shaping articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
    • F16C33/414—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages
    • F16C33/416—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Vending Machines For Individual Products (AREA)
  • Polarising Elements (AREA)
  • Rolling Contact Bearings (AREA)

Description

?ROLLINA MIGLIORATA? ?IMPROVED ROLL?

DESCRIZIONE DESCRIPTION

L'invenzione si riferisce ad una migliorata testa rotante per produrre lattine o barattoli (detto tecnicamente rollina o seamer), e alla macchina che contiene la testa. The invention relates to an improved rotary head for producing cans or jars (technically called roll or seamer), and to the machine which contains the head.

La rollina di una macchina confezionatrice di lattine serve a fissare per aggraffatura il coperchio della lattina al cilindro che ne costituisce il corpo. Allo scopo si usa un rullo folle perifericamente sagomato per piegare e ribadire uno sull?altro i bordi della lamiera da saldare, v. ad es. EP3397409 (Lyra). Le note rolline sono costituite da una rotella in materiale inossidabile e di elevata durezza (ad es. in stellite) nella quale vengono ricavate le sedi per una coppia di cuscinetti. The roll of a can packaging machine is used to fix the can lid to the cylinder which forms its body by seaming. For this purpose, a peripherally shaped idle roller is used to bend and rivet one on the other the edges of the sheet metal to be welded, see. e.g. EP3397409 (Lira). The well-known rolls consist of a roller made of stainless material and of high hardness (for example in stellite) in which the seats for a pair of bearings are obtained.

Le note rolline hanno parecchi problemi. Note rolls have several problems.

Siccome la rotella ? fatta di materiale molto duro necessita per la sua lavorazione di utensili molto costosi e che tendono a rompersi facilmente se non si lavora con la massima attenzione. Poi, la registrazione della coppia di cuscinetti per determinare il minimo gioco e/o precarico va eseguita da un tecnico specializzato con tempi di montaggio piuttosto elevati, soprattutto quando si esegue la manutenzione. La breve durata dei cuscinetti impone alti costi di manutenzione, a cui si affiancano i costi dell?impianto di lubrificazione ad olio o a grasso (specifici per alimenti). As the wheel? made of very hard material, it requires very expensive tools for its machining and which tend to break easily if you do not work with the utmost attention. Then, the adjustment of the pair of bearings to determine the minimum clearance and/or preload must be performed by a specialized technician with rather long assembly times, especially when performing maintenance. The short life of the bearings imposes high maintenance costs, which are accompanied by the costs of the oil or grease lubrication system (specific for food).

Migliorare questo stato dell?arte e ovviare ad almeno uno di questi problemi ? lo scopo principale dell'invenzione. Improve this state of the art and remedy at least one of these problems? the main purpose of the invention.

Altro scopo ? ottenere una rollina che sia semplice da costruire, poco costosa, affidabile e di lunga durata. Other purpose? obtain a roll that is simple to build, inexpensive, reliable and long lasting.

Uno o pi? scopi sono raggiunti da quanto definito nelle allegate rivendicazioni, in cui quelle dipendenti definiscono varianti vantaggiose. One or more? The purposes are achieved by what is defined in the attached claims, wherein the dependent ones define advantageous variants.

Un primo aspetto dell?invenzione riguarda una rollina per macchina aggraffatrice di lattine o barattoli, o in generale una rollina aggraffatrice di lattine o barattoli. La rollina comprende A first aspect of the invention relates to a roll for seaming machine for cans or jars, or in general a roll for seaming cans or jars. The roll includes

un rullo aggraffatore esterno che contiene coassialmente un cuscinetto interno, ove an outer seaming roller which coaxially contains an inner bearing, where

il cuscinetto comprendente un anello girevole su elementi rotolanti e coassiale al rullo, the bearing comprising a ring rotating on rolling elements and coaxial with the roller,

e l?anello e il rullo aggraffatore sono fatti di ceramica. and the ring and pinch roller are made of ceramic.

Le parti ceramiche assicurano elevata resistenza e durabilit?, maggiore di quella delle omologhe parti in metallo, e a fine vita non vanno riparate. The ceramic parts ensure high resistance and durability, greater than that of the homologous metal parts, and at the end of their life they must not be repaired.

Il cuscinetto interno ? preferibilmente The inner bearing? preferably

formato da due (o pi?) anelli coassiali ceramici girevoli su elementi rotolanti, e formed by two (or more?) coaxial ceramic rings revolving on rolling elements, e

in particolare ? costituito solo da due anelli coassiali ceramici girevoli su elementi rotolanti. in particular ? consisting only of two coaxial ceramic rings revolving on rolling elements.

Preferibilmente la rollina comprende elementi rotolanti montati per scorrere su una pista ricavata sulla superficie esterna del o di ciascun anello e su una pista ricavata sulla superficie interna del rullo aggraffatore. Preferably, the roll comprises rolling elements mounted to slide on a track formed on the outer surface of the or of each ring and on a track formed on the inner surface of the seaming roller.

Di solito la parte pi? delicata della rollina ? il cuscinetto, che determina la vita utile della rollina o la frequenza delle manutenzioni. La suddetta struttura del cuscinetto consente di allungarne la vita utile, almeno quanto quella del rullo in ceramica, pertanto la vita utile complessiva della rollina viene aumentata. Usually the most? delicate of the roll? the bearing, which determines the useful life of the roller or the frequency of maintenance. The aforementioned structure of the bearing allows its useful life to be lengthened, at least as much as that of the ceramic roller, therefore the overall useful life of the roller is increased.

Preferibilmente una guarnizione ? montata sugli anelli per mantenere a tenuta stagna del lubrificante all?interno del cuscinetto; in particolare lo spazio anulare che si crea fra un o ciascun anello e il rullo per gli elementi rotolanti contiene o ? riempito di grasso, in particolare grasso alimentare. L?adozione del grasso, pi? denso dell?olio, facilita il contenimento del lubrificante dentro la rollina onde evitare perdite. Inoltre il grasso permette di eliminare la manutenzione per lubrificazione durante la vita del cuscinetto. In alcune condizioni ? possibile prevedere una lubrificazione ad acqua o una totale assenza di lubrificazione. Preferably a gasket? mounted on the rings to keep the lubricant inside the bearing sealed; in particular, the annular space that is created between one or each ring and the roller for the rolling elements contains or ? filled with fat, especially food fat. The adoption of fat, pi? thick with oil, it facilitates the containment of the lubricant inside the roll in order to avoid losses. In addition, grease eliminates lubrication maintenance during the life of the bearing. Under some conditions? It is possible to foresee a water lubrication or a total absence of lubrication.

Un secondo aspetto dell?invenzione riguarda una macchina aggraffatrice comprendente la suddetta rollina in una o ciascuna variante. La macchina, soprattutto qualora comprenda una tavola rotante con una molteplicit? di rolline periferiche, riesce a produrre lattine con costi ridotti e minore manutenzione. I vantaggi dell?invenzione saranno pi? chiari dalla seguente descrizione di una preferita forma realizzativa di una rollina, facendo riferimento all?allegato disegno in cui A second aspect of the invention relates to a seaming machine comprising the aforementioned roll in one or each variant. The machine, especially if it includes a rotary table with a multiplicity? of peripheral rolls, is able to produce cans with reduced costs and less maintenance. The advantages of the invention will be more? clear from the following description of a preferred embodiment of a roll, with reference to the enclosed drawing in which

? Fig.1 mostra in sezione una rollina di aggraffatura per lattine. ? Fig.1 shows a sectional seaming roll for cans.

Una rollina 10 ? montabile su un supporto fisso o rotante di una macchina aggraffatrice (non mostrata) per assemblare il coperchio e il corpo centrale di una lattina o barattolo. A roll 10 ? mountable on a fixed or rotating support of a seaming machine (not shown) to assemble the lid and the central body of a can or jar.

L?aggraffatura avviene in modo noto per mezzo di un rullo aggraffatore esterno 12 dotato di un bordo di aggraffatura 14. Il rullo 12 ? montato folle attorno a un cuscinetto interno 30 cos? da ruotare attorno ad un asse Z. L?asse Z ? anche asse di simmetria per la rollina 10. The seaming takes place in a known way by means of an external seaming roller 12 provided with a seaming edge 14. The roller 12 is? mounted idle around an internal bearing 30 cos? to rotate around a Z axis. L? Z axis ? also axis of symmetry for roll 10.

Il cuscinetto 30 ? formato da due anelli concentrici e sovrapposti 32, 34 che sono coassiali all?asse Z. Il diametro degli anelli 32, 34 ? uguale ma non necessariamente. The bearing 30 ? formed by two concentric and superimposed rings 32, 34 which are coaxial to the Z axis. The diameter of the rings 32, 34 is the same but not necessarily.

Tra ognuno degli anelli 32, 34 e il rullo 12 ? presente una rispettiva corona di sfere rotolanti 36. Le sfere di una corona hanno centri che giacciono su un piano Y1 e le sfere dell?altra corona giacciono su un piano Y2. I piani Y1, Y2 sono tra loro paralleli, non coincidenti e distanziati, e ortogonali all?asse Z. Sulle superfici affacciate del rullo 12 e dei due anelli 32, 34 sono ricavate delle piste di rotolamento per le sfere 36, in particolare le piste sono concavit? con curvatura complementare a quella delle sfere 36. Between each of the rings 32, 34 and reel 12 ? there is a respective crown of rolling spheres 36. The spheres of one crown have centers which lie on a plane Y1 and the spheres of the other crown lie on a plane Y2. The planes Y1, Y2 are mutually parallel, not coincident and spaced apart, and orthogonal to the Z axis. On the facing surfaces of the roller 12 and of the two rings 32, 34, rolling tracks are obtained for the balls 36, in particular the tracks are they concavity? with curvature complementary to that of the balls 36.

Le sfere 36 sono fatte di ceramica o plastica. The 36 balls are made of ceramic or plastic.

I due anelli 32, 34 e il rullo 12 sono fatti di ceramica (la ceramica ha vita operativa maggiore del metallo). The two rings 32, 34 and the roller 12 are made of ceramic (ceramic has a longer operating life than metal).

Si noti la differenza con la struttura in EP3397409: nella rollina 10 le sfere 36 toccano da una parte gli anelli 32, 34 e dall?altro il rullo 12, mentre in EP3397409 il cuscinetto ? formato da anelli concentrici di diametro diverso. Poich? il rullo 12 ? fatto di ceramica non ? possibile usare la struttura del cuscinetto in EP3397409, Infatti, perch? il rullo 12 esplichi la sua funzione di aggraffatura ? necessario che il cuscinetto venga inserito per interferenza all?interno del rullo 12. L?interferenza operativa con cui il cuscinetto dovrebbe essere inserito provoca nel rullo una sollecitazione di trazione che non ? compatibile con le caratteristiche di resistenza meccanica della ceramica provocandone la rottura prematura. Note the difference with the structure in EP3397409: in the roller 10 the balls 36 touch the rings 32, 34 on one side and the roller 12 on the other, while in EP3397409 the bearing ? formed by concentric rings of different diameters. because reel 12 ? not made of ceramic ? possible to use the structure of the bearing in EP3397409, Indeed, why? does roller 12 perform its crimping function? necessary that the bearing is inserted by interference inside the roller 12. The operating interference with which the bearing should be inserted causes a tensile stress in the roller which is not? compatible with the mechanical resistance characteristics of the ceramic causing premature breakage.

La costruzione della rollina 10 consente di usare dischi 32, 34 con diametro maggiore rispetto a EP3397409, per cui il cuscinetto 30 ? pi? resistente e longevo, tanto che pu? eguagliare la vita utile del rullo 12, che ? maggiore di un comune rullo in metallo. The construction of the reel 10 allows the use of discs 32, 34 with a larger diameter than EP3397409, so that the bearing 30 ? more resistant and long-lived, so much so that pu? equal the useful life of the roll 12, which ? greater than a common metal roller.

In questo modo la durata stimata per l?intera rollina 10 ? almeno doppia di quella usuale. Inoltre non servono impianti automatici di lubrificazione. Un altro vantaggio ? che la rollina 10 ? usa-e-getta, ovvero non necessita di interventi manutentivi (le parti ceramiche non vengono rigenerate) e si sostituisce completamente a fine vita. In this way the estimated duration for the whole roll 10 ? at least double the usual one. Furthermore, no automatic lubrication systems are needed. Another advantage? that roll 10 ? disposable, i.e. it does not require maintenance (the ceramic parts are not regenerated) and can be replaced completely at the end of its life.

Tra il rullo 12 e gli anelli 32, 34 residua uno spazio S, che contiene le sfere 36. Lo spazio S ? preferibilmente riempito di lubrificante (ad es. grasso alimentare) e pu? essere racchiuso, in corrispondenza dei bordi opposti degli anelli 32, 34, da due (opzionali) guarnizioni 50. Le guarnizioni 50 evitano le perdite di grasso dal cuscinetto verso i prodotti aggraffati, ad es. delicati come gli alimentari. Una (opzionale) gabbia cilindrica 60, ad es. in plastica, ? disposta attorno agli anelli 32, 34 in corrispondenza del loro piano di contatto. La gabbia 60 serve a distanziare assialmente le sfere 36 e a mantenerle in posizione dentro la rollina 10. Between the roller 12 and the rings 32, 34 there is a residual space S, which contains the spheres 36. The space S ? preferably filled with lubricant (e.g. food grease) and pu? be enclosed, at the opposite edges of the rings 32, 34, by two (optional) gaskets 50. The gaskets 50 prevent grease from leaking from the bearing towards the seamed products, e.g. delicate as food. An (optional) cylindrical cage 60, e.g. plastic, ? arranged around the rings 32, 34 in correspondence with their contact plane. The cage 60 serves to axially space the balls 36 and to keep them in position inside the roll 10.

La struttura monolitica dei due anelli 32, 34 assicura precisione nel funzionamento e scarsa necessit? di regolazione post-installazione. The monolithic structure of the two rings 32, 34 ensures precision in operation and little need for? post-installation adjustment.

Una variante prevede di usare elementi rotolanti diversi dalle sfere, ad es. rulli, mantenendo uguale tutto il resto. La soluzione ottimale ? rappresentata dalle sfere perch? abbinano un'elevata capacit? di carico ad un attrito volvente molto ridotto. Tuttavia anche se presentano attrito pi? elevato i rulli (conici, cilindrici o a botte) hanno capacit? di carico maggiori delle sfere, per cui in alcune applicazioni possono essere preferibili. A variant involves using rolling elements other than spheres, e.g. rollers, keeping everything else the same. The optimal solution? represented by the spheres why? combine a high capacity? load with very low rolling friction. However, even if they have friction pi? high rollers (conical, cylindrical or barrel) have capacity? greater than balls, so in some applications they may be preferable.

Claims (10)

RIVENDICAZIONI 1. Rollina (10) aggraffatrice di lattine o barattoli, comprendente:1. Roll (10) seamer for cans or jars, comprising: un rullo aggraffatore esterno (12) che contiene coassialmente un cuscinetto interno (30), ove il cuscinetto (30) comprende un anello (32, 34) girevole su elementi rotolanti (36) e coassiale al rullo, l?anello (32, 34) e il rullo aggraffatore (12) essendo fatti di ceramica.an external seaming roller (12) which coaxially contains an internal bearing (30), where the bearing (30) comprises a ring (32, 34) rotatable on rolling elements (36) and coaxial with the roller, the ring (32, 34 ) and the seaming roller (12) being made of ceramic. 2. Rollina (30) secondo la rivendicazione 1, comprendente un cuscinetto interno (30) formato da due anelli coassiali (32, 34) girevoli su elementi rotolanti (36), gli anelli coassiali (32, 34) essendo fatti di ceramica.Roller (30) according to claim 1, comprising an inner bearing (30) formed by two coaxial rings (32, 34) rotatable on rolling elements (36), the coaxial rings (32, 34) being made of ceramic. 3. Rollina (30) secondo la rivendicazione 1 o 2, comprendente elementi rotolanti montati per scorrere su una pista ricavata sulla superficie esterna del o di ciascun anello e su una pista ricavata sulla superficie interna del rullo aggraffatore.3. Roller (30) according to claim 1 or 2, comprising rolling elements mounted to slide on a track formed on the outer surface of the or each ring and on a track formed on the inner surface of the seaming roll. 4. Rollina (30) secondo la rivendicazione 2 o 3, comprendente una guarnizione (50) montata sugli anelli (32, 34) per mantenere a tenuta stagna del lubrificante all?interno del cuscinetto.4. Roller (30) according to claim 2 or 3, comprising a gasket (50) mounted on the rings (32, 34) to keep the lubricant inside the bearing watertight. 5. Rollina (30) secondo una qualsiasi delle rivendicazioni precedenti, in cui uno spazio anulare per gli elementi rotolanti (36) che si crea fra un o ciascun anello e il rullo contiene o ? riempito di grasso.A roll (30) according to any one of the preceding claims, wherein an annular space for the rolling elements (36) which is created between one or each ring and the roll contains or ? filled with fat. 6. Rollina (30) secondo una qualsiasi delle rivendicazioni precedenti da 2 a 5, in cui i diametri degli anelli (32, 34) sono uguali.6. Roll (30) according to any one of the preceding claims from 2 to 5, wherein the diameters of the rings (32, 34) are the same. 7. Rollina (30) secondo una qualsiasi delle rivendicazioni precedenti da 2 a 6, in cui tra ognuno degli anelli (32, 34) e il rullo (12) ? presente una rispettiva corona di elementi rotolanti (36), ove gli elementi rotolanti (36) di una corona hanno centri che giacciono su un piano (Y1) e gli elementi rotolanti (36) dell?altra corona giacciono su un diverso piano (Y2), i piani (Y1, Y2) essendo tra loro paralleli, distanziati tra loro, e ortogonali all?asse di rotazione (Z) del rullo (12).7. Roller (30) according to any one of the preceding claims from 2 to 6, wherein between each of the rings (32, 34) and the roller (12) ? there is a respective crown of rolling elements (36), where the rolling elements (36) of one crown have centers lying on one plane (Y1) and the rolling elements (36) of the other crown lie on a different plane (Y2) , the planes (Y1, Y2) being mutually parallel, spaced apart, and orthogonal to the axis of rotation (Z) of the roller (12). 8. Rollina (30) secondo una qualsiasi delle rivendicazioni precedenti, in cui gli elementi rotolanti (36) sono fatti di ceramica.A roll (30) according to any one of the preceding claims, wherein the rolling elements (36) are made of ceramic. 9. Rollina (30) secondo una qualsiasi delle rivendicazioni precedenti da 2 a 8, comprendente una gabbia cilindrica (60) disposta attorno agli anelli (32, 34) in corrispondenza del loro piano di contatto per distanziare assialmente gli elementi (36) e a mantenerli in posizione dentro la rollina (10).9. Roller (30) according to any one of the preceding claims from 2 to 8, comprising a cylindrical cage (60) disposed around the rings (32, 34) in correspondence with their contact plane to axially space the elements (36) and to keep them in position inside the roll (10). 10. Macchina aggraffatrice comprendente un rollina (10) come in una o ciascuna delle rivendicazioni precedenti. 10. Seaming machine comprising a roll (10) as in one or each of the preceding claims.
IT102020000012652A 2020-05-28 2020-05-28 "IMPROVED ROLL" IT202000012652A1 (en)

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IT102020000012652A IT202000012652A1 (en) 2020-05-28 2020-05-28 "IMPROVED ROLL"
PCT/IB2021/054468 WO2021240332A1 (en) 2020-05-28 2021-05-23 Rolling seamer

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541786A (en) * 1982-09-03 1985-09-17 Ford Motor Company Ceramic turbocharger
US4574607A (en) * 1983-02-03 1986-03-11 Kyocera Corporation Can end seaming tool
GB2225265A (en) * 1988-10-28 1990-05-30 Metal Box Plc Seaming rolls for can closing machines
US5176456A (en) * 1989-05-01 1993-01-05 Koyo Seiko Co., Ltd. Rolling bearing
JP2001221235A (en) * 2000-02-08 2001-08-17 Fuji Dies Kk Solid lubrication integral bearing, cage for solid lubrication integral bearing, and roll with solid lubrication integral bearing
EP1450058A2 (en) * 2003-02-18 2004-08-25 Koyo Seiko Co., Ltd. Rolling bearing with ring made of ceramics
EP3397409A1 (en) 2015-12-30 2018-11-07 Lyra Bearing S.r.l. Improved rolling seamer
US20190300213A1 (en) * 2018-04-02 2019-10-03 LeRoy J. Reiner Tooling for industrial canning

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541786A (en) * 1982-09-03 1985-09-17 Ford Motor Company Ceramic turbocharger
US4574607A (en) * 1983-02-03 1986-03-11 Kyocera Corporation Can end seaming tool
GB2225265A (en) * 1988-10-28 1990-05-30 Metal Box Plc Seaming rolls for can closing machines
US5176456A (en) * 1989-05-01 1993-01-05 Koyo Seiko Co., Ltd. Rolling bearing
JP2001221235A (en) * 2000-02-08 2001-08-17 Fuji Dies Kk Solid lubrication integral bearing, cage for solid lubrication integral bearing, and roll with solid lubrication integral bearing
EP1450058A2 (en) * 2003-02-18 2004-08-25 Koyo Seiko Co., Ltd. Rolling bearing with ring made of ceramics
EP3397409A1 (en) 2015-12-30 2018-11-07 Lyra Bearing S.r.l. Improved rolling seamer
US20190300213A1 (en) * 2018-04-02 2019-10-03 LeRoy J. Reiner Tooling for industrial canning

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