IT202000003311A1 - Leather finishing machine - Google Patents
Leather finishing machine Download PDFInfo
- Publication number
- IT202000003311A1 IT202000003311A1 IT102020000003311A IT202000003311A IT202000003311A1 IT 202000003311 A1 IT202000003311 A1 IT 202000003311A1 IT 102020000003311 A IT102020000003311 A IT 102020000003311A IT 202000003311 A IT202000003311 A IT 202000003311A IT 202000003311 A1 IT202000003311 A1 IT 202000003311A1
- Authority
- IT
- Italy
- Prior art keywords
- roller
- machine
- leather
- rubber
- engraved
- Prior art date
Links
- 239000010985 leather Substances 0.000 title claims description 21
- 238000001035 drying Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 description 5
- 102100040428 Chitobiosyldiphosphodolichol beta-mannosyltransferase Human genes 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012263 liquid product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/56—Ornamenting, producing designs, embossing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/28—Machines for treating leather combined with devices for measuring and printing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
- C14B17/06—Work feeding or clamping devices
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B7/00—Special leathers and their manufacture
- C14B7/06—Leather webs built up of interengaged strips or pieces, e.g. by braiding
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0856—Reverse coating rollers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
DESCRIZIONE DESCRIPTION
dell?invenzione avente per TITOLO ?Macchina per la rifinizione di pelli" of the invention having as TITLE? Leather finishing machine "
Il presente trovato riguarda una macchina per la rifinizione di pelli, secondo la parte generale della rivendicazione 1. The present invention relates to a leather finishing machine, according to the general part of claim 1.
Una macchina per la rifinizione di pelli di tipo noto ? illustrata in fig.1. A known type of leather finishing machine? illustrated in fig. 1.
Come ? noto, per l?esecuzione dell?operazione di rifinizione nel campo della conceria sono in particolare usate delle macchine a rulli, dette comunemente tamponatrici, nelle quali le pelli P vengono trasportate da un tappeto in gomma 1 e premute contro un contrapposto rullo inciso 2, che deposita sulla superficie della pelle una pellicola uniforme di liquido L, precedentemente distribuita su detto rullo inciso da una o pi? lame racle 9. How ? known, for the execution of the finishing operation in the tannery field, roller machines are used, commonly called tamponing machines, in which the hides P are transported by a rubber belt 1 and pressed against an opposing engraved roller 2, which deposits on the surface of the skin a uniform film of liquid L, previously distributed on said roller engraved by one or more? doctor blades 9.
Il rullo inciso pu? ruotare in ?sincro?, cio? in senso concorde con il verso di avanzamento della pelle o in ?reverse?, cio? in senso contrario al suddetto verso della pelle. The engraved roller can? rotate in? synchro ?, that is? in a sense it agrees with the direction of advancement of the skin or in? reverse ?, that is? in the opposite direction to the aforementioned skin direction.
La perfetta riuscita dell?operazione di rifinizione delle pelli dipende da molti fattori, tra i quali i predominanti sono una regolare entrata della pelle nella zona ristretta, cio? quella compresa tra il rullo inciso ed il sottostante rullo o tappeto di trasporto ed una ben determinata forza di compressione della porzione di pelle che viene a contatto, in modo sostanzialmente tangente con la superficie del suddetto rullo inciso. L?uniformit? di tale forza di compressione quando la macchina tamponatrice a rullo ? dotata di tappeto in gomma di trasporto 1 dipende dalla tensione del tappeto stesso per garantirne l?avvolgimento sul primo rullo 4, con funzione di mezzo di contrasto interno a detto tappeto in gomma 1 sopra citato e contrapposto al rullo inciso 2. The perfect success of the leather finishing operation depends on many factors, among which the predominant ones are a regular entry of the leather in the restricted area, that is? that comprised between the engraved roller and the underlying transport roller or belt and a well determined compression force of the portion of leather which comes into contact, substantially tangent with the surface of the said engraved roller. The uniformity of this compression force when the roller tamping machine? equipped with a rubber conveyor belt 1 it depends on the tension of the belt itself to ensure its winding on the first roller 4, acting as a contrast medium inside said rubber belt 1 mentioned above and opposed to the engraved roller 2.
Nel documento EP 0997538 ? descritta una macchina per la rifinizione di pelli che, grazie alla sua configurazione, ? in grado di operare anche su pelli morbide. In the document EP 0997538? described a machine for finishing leather which, thanks to its configuration,? able to operate even on soft leathers.
In ogni caso, le pelli che presentano uno spessore sottile tendono ad aderire al tappeto di trasporto ed ? quindi necessario un dispositivo che ne consenta un agevole distacco per la consegna ad un ulteriore mezzo di trasporto per la fase di essiccazione. In any case, leathers with a thin thickness tend to adhere to the conveyor belt and? therefore a device is necessary which allows easy detachment for delivery to a further means of transport for the drying phase.
Nelle attuali macchine tamponatrici ? previsto un rullo staccapelli 17, costituito di fatto da un elemento cilindrico con una modesta dentatura, che ruota in senso concorde rispetto al secondo rullo di rinvio e quindi con velocit? periferiche delle zone prossimali di questi due rulli aventi verso opposto. Detto rullo staccapelli agevola il distacco della pelle dal tappeto in gomma e la sua consegna al successivo elemento di trasporto per la fase di essiccazione. In current tampon machines? a detaching roller 17 is provided, consisting in fact of a cylindrical element with a modest toothing, which rotates in a direction concordant with respect to the second return roller and therefore with speed? peripheral areas of the proximal areas of these two rollers having opposite directions. Said detaching roller facilitates the detachment of the leather from the rubber mat and its delivery to the next transport element for the drying phase.
Purtroppo bisogna considerare che nella fase di rifinizione il lato fiore della pelle viene bagnato con appositi prodotti liquidi appositamente atti a detta rifinitura. Tali prodotti liquidi tendono ovviamente a cadere sia sul bordo delle pelli nonch?, con il passare del tempo, ad accumularsi anche sulla superficie esterna del tappeto di trasporto; accade perci? necessariamente che il rullo staccapelli tenda a sporcarsi con tali prodotti liquidi, sia per il contatto con il bordo delle pelli gi? rifinite, che, data la sua vicinanza, con il tappeto di trasporto. Unfortunately, it must be considered that in the finishing phase the grain side of the leather is wetted with special liquid products specifically designed for this finishing. These liquid products obviously tend to fall both on the edge of the hides and, with the passage of time, to accumulate also on the external surface of the conveyor belt; happens therefore? necessarily that the detaching roller tends to get dirty with such liquid products, both due to contact with the edge of the skins already? finished, which, given its proximity, with the conveyor belt.
In pratica, data la estrema vicinanza tra tappeto e rullo staccapelli, avviene un passaggio indiretto di prodotto chimico liquido di rifinizione tra il tappeto e detto rullo staccapelli. In practice, given the extreme proximity between the carpet and the detaching roller, an indirect passage of the finishing liquid chemical product takes place between the carpet and said detaching roller.
Bisogna considerare che ci? ? in qualche modo accettabile in determinate lavorazioni in cui non interessa particolarmente che il lato carne delle pelli venga in qualche modo sporcato o contaminato di prodotto chimico liquido di rifinizione. Questo ? il caso, per esempio, delle pelli che presentano un qualche tipo di fodera o simili, in corrispondenza del lato carne. Tuttavia vi ? attualmente una maggiore tendenza ad utilizzare le pelli in corrispondenza di entrambe le loro facce. In questi casi ? pertanto del tutto inaccettabile il fatto di avere un qualunque tipo di contaminazione di prodotto chimico liquido di rifinizione, anche minima, in corrispondenza del lato carne delle pelli. Pertanto in presenza di pelli sottili e morbide non ? possibile utilizzare tali tipo di macchine per la rifinizione e tale operazione viene effettuata con macchine spruzzatrici strutturalmente diverse da quelle test? descritte. We must consider that there? ? in some way acceptable in certain processes in which it is not particularly interesting that the flesh side of the hides is somehow soiled or contaminated with a liquid finishing chemical product. This ? the case, for example, of leathers that have some type of lining or the like, at the flesh side. However there? currently a greater tendency to use hides in correspondence of both their faces. In these cases ? therefore it is completely unacceptable to have any type of contamination of the finishing liquid chemical product, even minimal, in correspondence with the flesh side of the hides. Therefore in the presence of thin and soft skin not? Is it possible to use these types of machines for finishing and this operation is carried out with spraying machines that are structurally different from the test ones? described.
Un altro accorgimento per agevolare il distacco delle pelli dal tappeto di trasporto consiste nel prevedere un secondo rullo di diametro il pi? possibile ridotto. In questo modo avviene necessariamente il fatto che la superficie esterna del tappeto in corrispondenza del secondo rullo di diametro estremamente ridotto sia destinata necessariamente a dilatarsi longitudinalmente; di conseguenza, a causa di detta dilatazione longitudinale del tappeto, si crea uno scorrimento tra il lato carne della pelle e detto tappeto, facilitando il distacco di detta pelle dal tappeto stesso. Tuttavia questa diminuzione di diametro del secondo rullo determina anche una intrinseca debolezza meccanica di detto rullo che tende a flettersi eccessivamente, dal momento che il tappeto deve risultare necessariamente teso per essere movimentato, con una inaccettabile flessione del rullo, soprattutto in corrispondenza della sua parte centrale. Per cercare di ovviare a questo inconveniente si ? anche tentato di utilizzare rulli non perfettamente cilindrici, bens? leggermente bombati in corrispondenza della loro parte centrale, cos? da compensare la flessione longitudinale del rullo. Another expedient to facilitate the detachment of the hides from the conveyor belt consists in providing a second roller with the largest diameter. possible reduced. In this way it necessarily occurs that the outer surface of the carpet in correspondence with the second roller of extremely reduced diameter is necessarily destined to expand longitudinally; consequently, due to said longitudinal expansion of the carpet, a sliding is created between the flesh side of the hide and said carpet, facilitating the detachment of said skin from the carpet itself. However, this decrease in the diameter of the second roller also determines an intrinsic mechanical weakness of said roller which tends to flex excessively, since the carpet must necessarily be stretched to be moved, with an unacceptable bending of the roller, especially in correspondence with its central part. . To try to remedy this inconvenience, yes? also tried to use rollers that are not perfectly cylindrical, but? slightly rounded at their central part, so? to compensate for the longitudinal flexion of the roller.
Tuttavia bisogna considerare che, ovviamente, il rullo presenta una comune velocit? angolare in corrispondenza di tutto il suo sviluppo, ma una velocit? periferica che risulta maggiore in corrispondenza delle zone con raggio maggiore. Ci? comporta il fatto che, in corrispondenza della zona centrale, si verifica uno strisciamento del rullo sulla parte interna del tappeto con inaccettabili vibrazioni ed usura del tappeto stesso. Pertanto, anche questo accorgimento viene scarsamente utilizzato. However, we must consider that, obviously, the roller has a common speed? angular in correspondence of all its development, but a speed? peripheral which is greater in correspondence with the areas with greater radius. There? entails the fact that, in correspondence with the central zone, a sliding of the roller occurs on the internal part of the belt with unacceptable vibrations and wear of the belt itself. Therefore, even this trick is scarcely used.
In pratica, con tale modalit? costruttiva, come visibile in fig. 6, che riguarda il trovato, ma con elementi presenti anche nello stato dell?arte, una volta definito con D il diametro del secondo rullo 5 e con Sp lo spessore del tappeto di trasporto, il rapporto tra la circonferenza fittizia esterna percorsa dalla superficie esterna del tappeto e la circonferenza fittizia interna percorsa dalla superficie interna del tappeto In practice, with this modality? constructive, as shown in fig. 6, which relates to the invention, but with elements also present in the state of the art, once defined with D the diameter of the second roller 5 and with Sp the thickness of the conveyor belt, the ratio between the fictitious external circumference traveled by the external surface of the carpet and the fictitious internal circumference covered by the internal surface of the carpet
risulta pari a Da ci? si deduce che, al diminuire del diametro D, si determina un notevolissimo incremento dei rapporti tra questi due percorsi, con conseguente aumento della dilatazione longitudinale della superficie esterna del tappeto. is equal to Da ci? it can be deduced that, as the diameter D decreases, a considerable increase in the ratios between these two paths is determined, with a consequent increase in the longitudinal expansion of the outer surface of the carpet.
Scopo del presente trovato ? quello di realizzare una macchina per la rifinizione di pelli del tipo precedentemente descritto che sia in grado di ovviare agli inconvenienti manifestati dai prodotti consimili di tipo noto. Purpose of the present invention? that of realizing a machine for finishing hides of the type described above which is capable of obviating the drawbacks manifested by similar products of the known type.
Specificatamente, scopo del trovato ? quello di realizzare una macchina per la rifinizione di pelli in grado, in particolare, di consegnare le pelli ai successivi dispositivi di trasporto per la fase di essiccazione senza minimamente sporcare dette pelli, in particolare in corrispondenza del loro lato carne. Specifically, the purpose of the invention? that of realizing a machine for the finishing of hides capable, in particular, of delivering the hides to the subsequent transport devices for the drying phase without in the least dirtying said hides, in particular in correspondence with their flesh side.
Ulteriore scopo del trovato ? quello di realizzare una macchina di tale tipo, che risulti semplice dal punto di vista costruttivo, funzionale e pi? sicura per l?operatore. Further purpose of the invention? to create a machine of this type, which is simple from the constructive, functional and more? safe for the operator.
Ci? si ottiene, secondo il trovato, prevedendo che il secondo rullo sia dotato di almeno un elemento di supporto solidale alla struttura della macchina; in particolare tale elemento di supporto ? posizionato tra le estremit? di detto secondo rullo per aumentarne la rigidit? alla flessione longitudinale. There? according to the invention, the second roller is provided with at least one support element integral with the structure of the machine; in particular this support element? positioned between the ends? of said second roller to increase its rigidity? to longitudinal flexion.
Il presente trovato verr? ora illustrato e descritto in dettaglio con riferimento ad alcune sue possibili forme di realizzazione, rese a solo titolo di esempio non limitativo, con l?aiuto delle tavole di disegno allegate, dove; The present invention will come now illustrated and described in detail with reference to some of its possible embodiments, given as a non-limiting example only, with the help of the attached drawing tables, where;
- nella fig. 1 (tav. I) ? illustrata una vista schematica di una macchina per rifinizione di pelli di tipo in s? noto, secondo lo stato dell?arte; - in fig. 1 (table I)? illustrated a schematic view of a leather finishing machine of the type in s? known, according to the state of the art;
- nella fig. 2 (tav. II) ? illustrata una vista corrispondente della macchina per rifinizione di pelli, secondo il trovato; - in fig. 2 (plate II)? shown a corresponding view of the leather finishing machine according to the invention;
- nella fig. 3 (tav. III) ? illustrata una vista laterale del particolare della zona di consegna della pelle in una macchina per rifinizione di pelli, sia secondo lo stato dell?arte, che secondo il trovato, all?elemento di trasporto per la fase di essiccazione; - in fig. 3 (plate III)? illustrated a side view of the detail of the leather delivery area in a leather finishing machine, both according to the state of the art and according to the invention, to the transport element for the drying step;
- nelle figg. 4 e 5 (tav. IV) sono illustrate, rispettivamente, una vista in pianta dall?alto ed una vista laterale della macchina per rifinizione di pelli, secondo il trovato; - in figs. 4 and 5 (table IV) show, respectively, a top plan view and a side view of the leather finishing machine according to the invention;
- nelle figg.6 e 7 (tav. IV) sono illustrati dei particolari della macchina di cui al trovato, in corrispondenza del secondo rullo della pelle; - Figures 6 and 7 (table IV) show details of the machine according to the invention, in correspondence with the second leather roller;
- nelle figg.8 e 9 (tav. V) sono illustrate, rispettivamente, una vista complessiva ed un particolare degli elementi fondamentali del dispositivo di cui al trovato, in una sua prima forma particolare di realizzazione; - Figures 8 and 9 (table V) show, respectively, an overall view and a detail of the fundamental elements of the device according to the invention, in a first particular embodiment thereof;
- nelle figg. 10 e 11 (tav. VI) sono illustrate, rispettivamente, una vista complessiva ed un particolare degli elementi fondamentali del dispositivo di cui al trovato, in una sua seconda forma particolare di realizzazione. - in figs. 10 and 11 (table VI) show, respectively, an overall view and a detail of the fundamental elements of the device according to the invention, in a second particular embodiment thereof.
Come visibile nella fig.1, una macchina per la rifinizione di pelli di tipo noto prevede che una pelle P venga addotta da dei tappeti contrapposti 10, 11, che definiscono un canale di convogliamento 12, ad una zona in cui ? presente un tappeto in gomma 1 di trasporto, nonch? un rullo inciso 2, che preme contro le suddette, che deposita sulla superficie di detta pelle P una pellicola uniforme di liquido L, precedentemente distribuita su detto rullo inciso da uno o pi? lame racle 9. Tale tappeto 1 ? trainato da un primo rullo 4 e rinviato da un secondo rullo 5. In corrispondenza di detto secondo rullo 5 avviene il deposito della pelle su un successivo mezzo trasportatore 6, nella maggior parte dei casi costituito di fatto da un apposito tappeto. Di fatto, uno dei rulli 4 e 5 ? motore, mentre l?altro ? folle; sono inoltre previsti degli appositi mezzi 3 di lavaggio ed asciugatura, che operano in modo continuo sulla superficie esterna del tappeto 1 della macchina. Tutto ci? costituisce tecnica nota e quindi stato dell?arte del presente trovato. As can be seen in fig. 1, a known type of leather finishing machine provides that a hide P is added by opposing belts 10, 11, which define a conveyance channel 12, to an area in which? present a rubber mat 1 of transport, as well as? an engraved roller 2, which presses against the aforesaid ones, which deposits on the surface of said skin P a uniform film of liquid L, previously distributed on said engraved roller by one or more? squeegee blades 9. Such carpet 1? driven by a first roller 4 and returned by a second roller 5. At said second roller 5 the leather is deposited on a subsequent conveyor means 6, in most cases constituted in fact by a suitable belt. In fact, one of reels 4 and 5? engine, while the other? insane; special washing and drying means 3 are also provided, which operate continuously on the outer surface of the carpet 1 of the machine. All of this? it is known technique and therefore state of the art of the present invention.
Sempre secondo lo stato dell?arte, per facilitare il trasferimento della pelle P dal tappeto 1 ad un mezzo trasportatore 6, ? previsto un apposito rullo staccapelli 17 che, come gi? detto in precedenza, ? costituito da un elemento cilindrico con una modesta dentatura che ruota in senso concorde sia rispetto al secondo rullo 5, che ad un rullo 18 che movimenta il mezzo trasportatore 6 costituito, nella maggior parte dei casi, da un apposito tappeto. Again according to the state of the art, in order to facilitate the transfer of the hide P from the carpet 1 to a conveyor means 6,? provided for a special detaching roller 17 which, as already? said earlier,? constituted by a cylindrical element with a modest toothing which rotates in the same direction both with respect to the second roller 5, and to a roller 18 which moves the conveyor means 6 constituted, in most cases, by a suitable belt.
Con riferimento alle figure da 4 a 7, si vede che, secondo il trovato, ? in particolare previsto che il secondo rullo 5 sia dotato di un elemento di supporto 13 solidale alla struttura della macchina, posizionato tra le estremit? di detto secondo rullo 5 per aumentarne la rigidit? alla flessione longitudinale. With reference to Figures 4 to 7, it can be seen that, according to the invention,? in particular, provision is made for the second roller 5 to be equipped with a support element 13 integral with the structure of the machine, positioned between the ends? of said second roller 5 to increase its rigidity? to longitudinal flexion.
Dal punto di vista operativo, tale elemento di supporto ? solidale ad una barra 14 parallela al secondo rullo 5, il quale ? a sua volta imperniato ad un elemento 15, solidale alla struttura fissa della macchina. ? in particolare previsto che detto secondo rullo 5 sia imperniato a detto elemento 15. In questo modo ? pertanto evidente che, grazie alla presenza dell?elemento di supporto 13, si riduce fortemente la flessione longitudinale del rullo 5, ci? che consente di risolvere il problema costituito dagli inconvenienti manifestati dai prodotti consimili di tipo noto (stato dell?arte). From an operational point of view, this supporting element? integral with a bar 14 parallel to the second roller 5, which? in turn hinged to an element 15, integral with the fixed structure of the machine. ? in particular, provision is made for said second roller 5 to be pivoted to said element 15. In this way? therefore it is evident that, thanks to the presence of the support element 13, the longitudinal flexion of the roller 5 is greatly reduced, which which allows to solve the problem constituted by the drawbacks manifested by similar products of a known type (state of the art).
Secondo il trovato, ? possibile fare in modo che la struttura portante del secondo rullo 5 di rinvio, illustrata in particolare nelle figure 4 e 5, sia di fatto rimovibile rispetto al complesso della macchina di cui al trovato, in modo da facilitarne le operazioni di montaggio/smontaggio. According to the finding,? It is possible to ensure that the supporting structure of the second return roller 5, illustrated in particular in Figures 4 and 5, is in fact removable with respect to the unit of the machine according to the invention, so as to facilitate its assembly / disassembly operations.
Come visibile in particolare nella figura 7, per consentire al secondo rullo 5 di operare con l?elemento di supporto 13, ? previsto che siano presenti dei cuscinetti 16, vantaggiosamente di tipo volvente, disposti attorno all?anima cilindrica 19 del secondo rullo 5, in modo da consentire la rotazione dell?anima cilindrica 19 rispetto all?elemento di supporto 13. Da tale figura si vede che detta anima cilindrica 19 ? imperniata alle sue estremit? ad una piastra 20, solidale alla barra 14. As can be seen in particular in Figure 7, to allow the second roller 5 to operate with the support element 13,? provided that there are bearings 16, advantageously of the rolling type, arranged around the cylindrical core 19 of the second roller 5, so as to allow the rotation of the cylindrical core 19 with respect to the support element 13. From this figure it can be seen that said cylindrical core 19? pivoted at its ends? to a plate 20, integral with the bar 14.
Anche le figura 8 e 9 mettono in evidenza quanto sopra; in particolare ? ben evidente che ? possibile configurare un?unica struttura portante rimovibile rispetto alla macchina, in modo da facilitarne le operazioni di montaggio/smontaggio, secondo quanto gi? affermato in precedenza. Figures 8 and 9 also highlight the above; in particular ? clearly evident that? It is possible to configure a single removable bearing structure with respect to the machine, in order to facilitate assembly / disassembly operations, according to what has already been done. stated earlier.
Anche nella macchina di cui al trovato ? possibile prevedere la presenza di un cilindro folle 8 (si veda in particolare la figura 2) che presenta mezzi atti a variarne il posizionamento; tale cilindro 8, in base a detto posizionamento, ? in particolare atto a modificare il punto di contatto del tappeto in gomma 1 con il soprastante cilindro inciso 2. Also in the machine referred to in the found? it is possible to provide for the presence of an idle cylinder 8 (see in particular Figure 2) which has means suitable for varying its positioning; said cylinder 8, on the basis of said positioning,? in particular adapted to modify the point of contact of the rubber mat 1 with the above engraved cylinder 2.
Per garantire l?avvolgimento del tappeto in gomma 1 sul primo rullo 4 contrapposto al rullo inciso 2, al fine di esercitare la minima tensione utile, necessaria a garantire la forza di compressione della porzione di pelle che viene a contatto con il suddetto rullo inciso, ? vantaggioso che il rapporto fra il diametro del primo rullo 4 ed il diametro del secondo rullo 5 sia uguale o maggiore a 5. To ensure the winding of the rubber mat 1 on the first roller 4 opposed to the engraved roller 2, in order to exert the minimum useful tension, necessary to guarantee the compression force of the portion of leather that comes into contact with the aforementioned engraved roller, ? It is advantageous that the ratio between the diameter of the first roller 4 and the diameter of the second roller 5 is equal to or greater than 5.
Dal punto di vista operativo, il tappeto 1 ? realizzato in gomma, che presenta vantaggiosamente una durezza inferiore a 40 Shore A. ? inoltre possibile prevedere che sulla superficie interna della gomma sia presente uno o pi? strati di elemento sintetico o naturale. From an operational point of view, the carpet 1? made of rubber, which advantageously has a hardness lower than 40 Shore A.? it is also possible to foresee that on the inner surface of the rubber there is one or more? layers of synthetic or natural element.
Infine ? vantaggiosamente previsto che il tappeto in gomma 1 presenti uno spessore Sp della porzione in gomma variabile da 8 a 25 mm. In the end ? advantageously provided that the rubber mat 1 has a thickness Sp of the rubber portion varying from 8 to 25 mm.
Con riferimento alle figure 10 e 11, si vede che, secondo una ulteriore forma di realizzazione del dispositivo di cui al trovato, ? prevista una pluralit? di elementi di supporto 13; come visibile in tali figure, essi sono disposti in modo equispaziato tra le estremit? del secondo rullo 5. With reference to figures 10 and 11, it can be seen that, according to a further embodiment of the device according to the invention,? provided for a plurality? of support elements 13; as visible in these figures, they are arranged equally between the ends? of the second roller 5.
Da quanto sopra precede si vede quindi come il dispositivo di cui al trovato ? in grado di soddisfare gli scopi precedentemente proposti, grazie al fatto che l?almeno un elemento di supporto 13 presente in corrispondenza del secondo rullo 5 ? in grado di ovviare chiaramente alla flessione del rullo 5. From the foregoing it can therefore be seen how the device referred to in the invention? capable of satisfying the aims previously proposed, thanks to the fact that the at least one support element 13 present in correspondence with the second roller 5? able to clearly obviate the bending of the roller 5.
Si precisa inoltre che il presente trovato potr? assumere anche forme ed aspetti diversi da quelli illustrati e descritti in precedenza, ferme restando le sue caratteristiche essenziali, definite dalle seguenti rivendicazioni. It is also specified that the present invention may? also assume forms and aspects different from those illustrated and described above, without prejudice to its essential characteristics, defined by the following claims.
Claims (11)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102020000003311A IT202000003311A1 (en) | 2020-02-18 | 2020-02-18 | Leather finishing machine |
| EP21155427.4A EP3868898B1 (en) | 2020-02-18 | 2021-02-05 | Machine for finishing hides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102020000003311A IT202000003311A1 (en) | 2020-02-18 | 2020-02-18 | Leather finishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT202000003311A1 true IT202000003311A1 (en) | 2021-08-18 |
Family
ID=70480718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT102020000003311A IT202000003311A1 (en) | 2020-02-18 | 2020-02-18 | Leather finishing machine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3868898B1 (en) |
| IT (1) | IT202000003311A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023248120A1 (en) * | 2022-06-21 | 2023-12-28 | Rotacoat S.R.L. | Reversible coating machine for roller finishing of skins and the like |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4101003A1 (en) * | 1990-01-17 | 1991-07-18 | Vipa S R L Studio Progettazion | Automatically removing leather hide from rotary pigmenting machine - by suction applied from apertured and ribbed roller |
| EP0997538A2 (en) | 1998-10-30 | 2000-05-03 | GE.MA.TA. S.p.A. | Machine for finishing hides and the like |
| KR101151279B1 (en) * | 2011-11-14 | 2012-06-14 | 주경중 | Apparatus and device for coating split leather |
| EP3599289A2 (en) * | 2018-07-24 | 2020-01-29 | DMS International Societa' a Responsabilita' Limitata Semplificata | Machine for finishing flexible laminar surfaces used as coating of objects |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1270559B (en) | 1993-01-18 | 1997-05-06 | Ge Ma Ta Spa | ROLLER MACHINE FOR THE FINISHING OF LEATHER AND SIMILAR |
| GB2318108B (en) | 1996-10-11 | 2000-06-21 | Brockway Eng Co Ltd | Removable return rollers |
| WO2006060862A1 (en) | 2004-12-07 | 2006-06-15 | Bhp Billiton Innovation Pty Ltd | Roller support frame |
| AU2013203168A1 (en) | 2012-03-08 | 2013-09-26 | Flexible Steel Lacing Company | Apparatus and method for tracking conveyor belts |
| CN205114274U (en) | 2015-11-26 | 2016-03-30 | 广州叁立机械设备有限公司 | Edge of a knife gimbal mechanism |
| IT201700018187A1 (en) | 2017-02-17 | 2018-08-17 | Dms Italia S R L | TOGETHER FOR THE ADVANCE AND DISCHARGE OF FLEXIBLE LAMINAR PRODUCTS AND THE MACHINE FOR THE TREATMENT OF FLEXIBLE LAMINAR PRODUCTS INCLUDING SUCH AS |
-
2020
- 2020-02-18 IT IT102020000003311A patent/IT202000003311A1/en unknown
-
2021
- 2021-02-05 EP EP21155427.4A patent/EP3868898B1/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4101003A1 (en) * | 1990-01-17 | 1991-07-18 | Vipa S R L Studio Progettazion | Automatically removing leather hide from rotary pigmenting machine - by suction applied from apertured and ribbed roller |
| EP0997538A2 (en) | 1998-10-30 | 2000-05-03 | GE.MA.TA. S.p.A. | Machine for finishing hides and the like |
| KR101151279B1 (en) * | 2011-11-14 | 2012-06-14 | 주경중 | Apparatus and device for coating split leather |
| EP3599289A2 (en) * | 2018-07-24 | 2020-01-29 | DMS International Societa' a Responsabilita' Limitata Semplificata | Machine for finishing flexible laminar surfaces used as coating of objects |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3868898A1 (en) | 2021-08-25 |
| EP3868898B1 (en) | 2022-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102046382B (en) | Device for cold foil embossing | |
| AU688492B2 (en) | Press belt and method of manufacture | |
| IT202000003311A1 (en) | Leather finishing machine | |
| WO2000053419A1 (en) | Transfer printing machine | |
| SE511703C2 (en) | Use of a transfer belt for a tissue machine | |
| DE50310965D1 (en) | Sheet transport drum of a printing material sheet processing machine | |
| EP1081275A3 (en) | Method for manufacturing an endless belt for papermaking machines | |
| JP2008161767A (en) | Stripe coating machine, stripe coating method, and blade rotation mechanism | |
| KR100922623B1 (en) | Device for Transferring Double Faced for Narrow Textile and Method of Transferring for Narrow of the same, and Narrow Textile Using the same | |
| EP1703016A1 (en) | Paper machine and method for reconditioning a conveying belt of a paper machine | |
| JP2006247869A (en) | Variable printing machine | |
| CN1932141A (en) | Apparatus for applying an adhesive substance to a fabric strip | |
| ITMI20001208A1 (en) | BRAKING ROLLER FOR CUTTING SYSTEMS OF METAL TAPES IN STRIPS. | |
| US2111613A (en) | Cloth or fabric printing machine | |
| GB2115029A (en) | Press for the removal of moisture from wet webs of fibre material | |
| US20050145360A1 (en) | Press belts and shoe press device using the belts | |
| US20210131034A1 (en) | Press jacket and use thereof, and press roll and shoe press | |
| US2643116A (en) | Apparatus for controlling a web of sheet material | |
| JP3803071B2 (en) | Elastic belt for paper industry and method for producing the same | |
| CN209888354U (en) | Arch bridge type flexographic printing machine | |
| IT202000017926A1 (en) | MACHINE FOR THE ROLLER FINISHING OF LEATHER | |
| US1842889A (en) | Paper machinery | |
| US2411416A (en) | Papermaking apparatus | |
| US2752881A (en) | Means for design coloring of fabric webs | |
| JP3933246B2 (en) | Inkwell cover film |