EP2255019B1 - Procédé de traitement de surfaces laminaires flexibles - Google Patents

Procédé de traitement de surfaces laminaires flexibles Download PDF

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Publication number
EP2255019B1
EP2255019B1 EP09715393A EP09715393A EP2255019B1 EP 2255019 B1 EP2255019 B1 EP 2255019B1 EP 09715393 A EP09715393 A EP 09715393A EP 09715393 A EP09715393 A EP 09715393A EP 2255019 B1 EP2255019 B1 EP 2255019B1
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EP
European Patent Office
Prior art keywords
drum
flexible laminar
plant
laminar surfaces
rotating drum
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP09715393A
Other languages
German (de)
English (en)
Other versions
EP2255019A2 (fr
Inventor
Ruggero Galiotto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erretre SpA
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Erretre SpA
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Publication date
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Publication of EP2255019A2 publication Critical patent/EP2255019A2/fr
Application granted granted Critical
Publication of EP2255019B1 publication Critical patent/EP2255019B1/fr
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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
    • C14B3/00—Milling leather
    • 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
    • C14B1/40—Softening or making skins or leather supple, e.g. by staking, boarding, or crippling machines, by dry mills
    • 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

Definitions

  • the present invention concerns a method for treating flexible laminar surfaces such as leathers, hides and the like in tannery circle, implemented in drums of tanning, re-tanning, dyeing or milling.
  • the rotation of the drum around a central axis causes the mechanical working of the flexible laminar surfaces, with the lift and subsequent fall by gravity, in a continuative manner during a treatment cycle, of the laminar surfaces themselves within the volume bounded by the drum.
  • the plant also comprises circuits for the circulation from and to the drum of chemical products, dyeing and tanning agents, air and water which, while the drum rotates, carry out the so-called chemical working of the laminar surfaces.
  • milling or flying working into drum dry-occurs with the aim to soften leathers and give a particular grain to the grain side thereof.
  • the operating parameters of the drum during the provided leathers treatment such as working time, rotation speed of the drum, quantity of leathers introduced into the drum, type and quantity of the treatment products inserted into the drum, are decided and set by the operator on the basis of experience and historical data related to previous similar treatments, considering the type of leather to be treated.
  • the time of working leathers into the drum is determined by the operator in empirical way, by simply considering the production history, with the problems of inaccuracy and reliability of the set data that this entails, despite the proven experience of the operator.
  • the present invention seeks to overcome the technical problems of the prior art just complained.
  • main purpose of the invention is to develop a method for treating flexible laminar surfaces which involves an optimization of implementation times or at least a precision greater than similar known methods.
  • the invention intends to propose a method for treating flexible laminar surfaces whose application depends less and less on the experience of the involved operators thus resulting more reliable than the known art.
  • a plant for treating flexible laminar surfaces such as leathers or hides as defined claim 11 also constitutes integral part of the invention.
  • the method for treating flexible laminar surfaces of the invention is able to establish the moment in which the working is actually completed and the processed material is ready, without the need to set any maximum time limit of the drum operation.
  • the method of the invention takes advantage right of these issues and, by detecting some operating parameters of the drum, among which exactly the power consumption and/or displacements of the central axis of rotation during operation, stops the movement of the drum as soon as it detects values excessively abnormal with respect to the nominal operating ones. This involves optimization of the working times of flexible laminar surfaces, less energy wastes compared to the known art and a greater productivity by the machine.
  • the worked flexible laminar surfaces are qualitative better than those ones obtained through known type methods, other factors involved being equal.
  • the plant 1 according to a traditional constructive form in the tannery circle, comprises a support frame 2, which stands on a reference surface, such as for example the paving of an industrial factory, and a rotating milling drum 3, suitable to contain the flexible laminar surfaces, such as animal leathers, in order to carry out their milling.
  • a support frame 2 which stands on a reference surface, such as for example the paving of an industrial factory
  • a rotating milling drum 3 suitable to contain the flexible laminar surfaces, such as animal leathers, in order to carry out their milling.
  • the rotating drum 3 defines a central axis of symmetry Z and is coupled with the support frame 2.
  • the plant 1 also includes motorization means, not visible; contained in the box body 4, suitable to put in rotation around the central axis Z the rotating drum 3.
  • the plant 1 comprises detection means, as a whole numbered with 5, operatively connected with the rotating drum 3 and/or the motorization means, which detect a pair of operating parameters of the plant 1 in order to allow the comparison of the detected value with a predetermined nominal value and the stopping of the moving of the drum 3 if the difference between the detected value of the operating parameters and the nominal value is greater than 0.
  • the detection means 5 comprise two weighing instruments 6, 7, for example load cells, one visible in figure 3 and the other in figure 4 , supported by the support frame 2.
  • the weighing instruments 6, 7 are reciprocally opposed, in the sense that the first is positioned at the front of the side wall 3a of the rotating drum 3 and the second is arranged at the front of the side wall 3b of the rotating drum 3.
  • Each weighing instrument 6, 7 is placed below a connection hub 8, 9, protruding from the rotating drum 3 in correspondence of the central axis of symmetry Z and coupled with a rotating shaft, not visible, positioned inside the rotating drum 3 and connected with the motorization means through transmission means, not shown.
  • each of the weighing instruments 6, 7 is arranged in a hollowed section 10, 11 of the support frame 2.
  • the detection means 5 include, in addition, a plurality of toroidal ammeters 12, better visible in figure 5 , cooperating with the motorization means with which they are connected.
  • the detection means 5 are electrically connected with a central processing and control unit, not represented and constituted for example by a PLC, at operator's disposal.
  • the method for treating the flexible laminar surfaces in the plant 1 for tanning, re-tanning, dyeing and/or milling comprises the following operations:
  • the method also comprises the following operations:
  • the operating parameters include the power absorbed by the motorization means which drive the drum 3 and the forces applied by the rotating drum 3 on two weighing instruments 6, 7, for example load cells, associate from opposite sides with the rotating drum 3.
  • the method of the invention may comprise the detection of a number of operating parameters of the plant different from that one here considered and referred to the attached drawings.
  • applicative variants of the method may include only one of aforesaid operating parameters or any combination thereof.
  • the method comprises the operation of displaying on a screen accessible to the operator the detected value of the chosen operating parameters.
  • the method of invention includes the operation of setting up the predetermined nominal value in the central processing and control unit.
  • the method comprises the operation of signalling the operative condition of the plant 1 for which the difference between the detected value and the nominal value is greater than 0.
  • the signalling operation is performed before the stopping operation and could consist in a signal or visual message on the screen accessible to the operator or, alternatively, in a sound signal.
  • the stopping operation occurs automatically or as a result of operator's intervention after the signalling operation.
  • the method of the invention comprises, according to a custom for the tannery industry, the operation of introducing into the rotating drums products such as dyes, enriching oils, water or air, suitable for the chemical working of the flexible laminar surfaces.
  • Such an operation of introducing the chemical products is performed before or during the operation of moving the rotating drum.
  • the method of the invention includes, therefore, the operation of extracting the flexible laminar surfaces from the rotating drum 3, performed after the operation of stopping the drum 3 itself.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (15)

  1. Procédé de traitement de surfaces laminaires flexibles telles que des cuirs ou peaux dans une installation (1) comprenant un tonneau rotatif (3) de tannage, re-tannage, teinture et/ou foulonnage, comprenant les étapes suivantes :
    - introduire dans ledit tonneau rotatif (3) une ou plusieurs desdites surfaces laminaires flexibles;
    - mettre en mouvement ledit tonneau (3) afin d'exécuter le traitement desdites surfaces laminaires flexibles,
    caractérisé en ce qu'il comprend les opérations suivantes :
    - détecter au moins un paramètre de fonctionnement de ladite installation (1);
    - comparer la valeur détectée dudit paramètre de fonctionnement avec une valeur nominale prédéterminée;
    - arrêter le mouvement du tonneau (3) si la différence entre ladite valeur détectée dudit paramètre de fonctionnement et ladite valeur nominale est supérieure à 0.
  2. Procédé selon la revendication 1, caractérisé en ce que ledit paramètre de fonctionnement comprend l'une quelconque des variables sélectionnées dans le groupe comprenant la puissance absorbée par les moyens de motorisation assurant le mouvement dudit tonneau (3), le déplacement latéral de l'axe de rotation dudit tonneau (3), le barycentre desdites surfaces laminaires flexibles à l'intérieur dudit tonneau (3), et les forces appliquées par ledit tonneau (3) sur un ou plusieurs instruments de pesage (6, 7) qui y sont associés.
  3. Procédé selon l'une quelconque des revendications précédentes caractérisé en ce qu'il comprend l'opération d'affichage de ladite valeur détectée dudit paramètre de fonctionnement.
  4. Procédé selon l'une quelconque des revendications précédentes caractérisé en ce qu'il comprend l'opération de réglage de ladite valeur nominale prédéterminée dans une unité centrale de traitement et de commande.
  5. Procédé selon la revendication 4, caractérisé en ce que lesdites opérations de détection et comparaison s'effectuent automatiquement au moyen de ladite unité centrale de traitement et de commande.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite valeur nominale dépend au moins des caractéristiques physiques et morphologiques, du poids et/ou de la quantité desdites surfaces laminaires flexibles introduites dans ledit tonneau rotatif (3).
  7. Procédé selon l'une quelconque des revendications précédentes caractérisé en ce qu'il comprend l'opération de signalisation de l'état opérationnel pour lequel ladite différence entre ladite valeur détectée et ladite valeur nominale est supérieure à 0, opération exécutée avant ladite opération d'arrêt.
  8. Procédé selon la revendication 7, caractérisé en ce que ladite opération d'arrêt s'effectue automatiquement ou résulte de l'intervention d'un opérateur après ladite opération de signalisation.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend l'opération consistant à introduire dans ledit tonneau rotatif des produits pour le traitement chimique desdites surfaces laminaires flexibles, opération exécutée avant ou pendant ladite opération de mise en mouvement dudit tonneau rotatif.
  10. Procédé selon la revendication 1, caractérisé en ce qu'il comprend l'opération d'extraction desdites surfaces laminaires flexibles dudit tonneau rotatif (3), exécutée après ladite opération d'arrêt dudit tonneau (3).
  11. Installation (1) de traitement de surfaces laminaires flexibles telles que cuirs ou peaux, comprenant :
    - un châssis support (2), apte à reposer sur une surface de référence;
    - un tonneau rotatif (3) de tannage, re-tannage, teinture et/ou foulonnage, apte à contenir lesdites surfaces laminaires flexibles, définissant un axe central de symétrie (Z) et accouplé audit châssis support (2);
    - des moyens de motorisation aptes à faire tourner ledit tonneau rotatif (3) autour dudit axe central (Z),
    caractérisée en ce qu'elle comprend des moyens de détection (5), reliés fonctionnellement audit tonneau rotatif (3) et/ou auxdits moyens de motorisation, propres à mesurer au moins un paramètre de fonctionnement de ladite installation (1) afin de permettre la comparaison de la valeur détectée avec une valeur nominale prédéterminée et l'arrêt du mouvement dudit tonneau (3) si la différence entre ladite valeur détectée dudit paramètre de fonctionnement et ladite valeur nominale est supérieure à zéro.
  12. Installation (1) selon la revendication 11, caractérisée en ce que ledit moyen de détection (5) comprend au moins une cellule de charge (6, 7) supportée par ledit châssis support (2) et placée au-dessous d'un moyeu de liaison (8, 9), faisant saillie dudit tonneau rotatif (3) en correspondance avec ledit axe central de symétrie (Z) et couplé à un arbre rotatif positionné à l'intérieur dudit tonneau rotatif (3).
  13. Installation (1) selon la revendication 12, caractérisée en ce que ladite cellule de charge (6, 7) est disposée dans une section creuse (10, 11) dudit châssis support (2).
  14. Installation (1) selon l'une quelconque des revendications 11 à 13, caractérisée en ce que lesdits moyens de détection (5) comprennent un ou plusieurs ampèremètres toroïdaux (12) coopérant avec lesdits moyens de motorisation auxquels ils sont reliés.
  15. Installation (1) selon l'une quelconque des revendications 11 à 14, caractérisée en ce que lesdits moyens de détection (5) sont électriquement reliés à une unité centrale de traitement et de commande à la disposition de l'opérateur.
EP09715393A 2008-02-29 2009-03-02 Procédé de traitement de surfaces laminaires flexibles Active EP2255019B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000053A ITVI20080053A1 (it) 2008-02-29 2008-02-29 Metodo di trattamento di superfici laminari flessibili.
PCT/IT2009/000076 WO2009107163A2 (fr) 2008-02-29 2009-03-02 Procédé de traitement de surfaces laminaires flexibles

Publications (2)

Publication Number Publication Date
EP2255019A2 EP2255019A2 (fr) 2010-12-01
EP2255019B1 true EP2255019B1 (fr) 2011-08-24

Family

ID=40292122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09715393A Active EP2255019B1 (fr) 2008-02-29 2009-03-02 Procédé de traitement de surfaces laminaires flexibles

Country Status (6)

Country Link
EP (1) EP2255019B1 (fr)
AT (1) ATE521719T1 (fr)
BR (1) BRPI0907599B1 (fr)
ES (1) ES2371818T3 (fr)
IT (1) ITVI20080053A1 (fr)
WO (1) WO2009107163A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103627824A (zh) * 2013-11-10 2014-03-12 安徽英特罗斯服饰有限公司 一种皮革转鼓
IT201700026639A1 (it) * 2017-03-10 2018-09-10 Erretre Spa Metodo per il riconoscimento dello stato di bottalatura di pelli
IT201800002878A1 (it) * 2018-02-20 2019-08-20 Pajusco Tecnologie S R L Supporto di un bottale per il trattamento di pelli e bottale che lo comprende
IT201900016685A1 (it) * 2019-09-19 2021-03-19 Erretre Spa Metodo di esecuzione di un ciclo di bottalatura di pelli

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241343A (en) * 1990-02-22 1991-08-28 Denken Monitoring the contents of a rotating drum far tanning and/or dyeing by weighing
ITVI980184A1 (it) * 1998-09-28 2000-03-28 Erretre Srl Procedimento per il controllo del ciclo di dosaggio dei prodotti chimici, dell'aria e dell'acqua nei bottali di follonaggio, riconcia e

Also Published As

Publication number Publication date
EP2255019A2 (fr) 2010-12-01
BRPI0907599B1 (pt) 2019-07-02
WO2009107163A3 (fr) 2009-10-22
WO2009107163A2 (fr) 2009-09-03
ITVI20080053A1 (it) 2009-09-01
ATE521719T1 (de) 2011-09-15
ES2371818T3 (es) 2012-01-10
BRPI0907599A2 (pt) 2015-07-21
BRPI0907599A8 (pt) 2015-10-06

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