EP2255019A2 - Verfahren zur behandlung biegsamer laminarer oberflächen - Google Patents

Verfahren zur behandlung biegsamer laminarer oberflächen

Info

Publication number
EP2255019A2
EP2255019A2 EP09715393A EP09715393A EP2255019A2 EP 2255019 A2 EP2255019 A2 EP 2255019A2 EP 09715393 A EP09715393 A EP 09715393A EP 09715393 A EP09715393 A EP 09715393A EP 2255019 A2 EP2255019 A2 EP 2255019A2
Authority
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.)
Granted
Application number
EP09715393A
Other languages
English (en)
French (fr)
Other versions
EP2255019B1 (de
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
Original Assignee
Erretre SpA
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 Erretre SpA filed Critical Erretre SpA
Publication of EP2255019A2 publication Critical patent/EP2255019A2/de
Application granted granted Critical
Publication of EP2255019B1 publication Critical patent/EP2255019B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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. It is known that, in tannery industry circle the plants for treating flexible laminar surfaces, such as leathers, including, according to a prevalent constructive scheme, a tanning, dyeing or milling drum within which the flexible laminar surfaces are subjected to working. 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.
  • chemical working of the laminar surfaces For example, 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.
  • Other construction features of the plant of the invention are highlighted in the relative dependent claims.
  • 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. It is known, indeed, that a working in a drum, whatever it is but in particular the milling, in any case involves a progressive increase in the volume of leathers inside the drum and the change of the position of the barycentre of the overall mass occupied by the leather themselves . Such issues affect in turn the movement of the drum, causing with the prosecution of the working an always stronger imbalance of the rotating drum and a more significant increase in the power absorption by the motorization means which drive the drum.
  • the plant for treating flexible laminar surfaces, not represented, is illustrated from two different angles in figures 1 and 2, where it is globally indicated with 1.
  • 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: introducing into the drum 3 a plurality of flexible laminar surfaces, such as animal leathers, as already mentioned; rotating the drum 3 in order to carry out the working of the flexible laminar surfaces.
  • the method also comprises the following operations : - detecting some operating parameters of the plant 1; comparing the detected value of the operating parameters with a predetermined nominal value; stopping the movement of the drum 3 if the difference between the detected value of the operating parameters and the nominal value is greater than 0.
  • 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 operating parameter is any of the quantities selected from the group consisting of:
  • 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 .
  • other applicative variants of the method may include only one of aforesaid operating parameters or any combination thereof .
  • the operations of detection and comparison occur automatically by means of the aforesaid central processing and control unit.
  • 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.
  • a nominal value of the operating parameter depends at least on the physical and morphological characteristics, weight and/or amount of the flexible laminar surfaces introduced into the rotating drum 3.
  • 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)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP09715393A 2008-02-29 2009-03-02 Verfahren zur behandlung biegsamer laminarer oberflächen Active EP2255019B1 (de)

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 (en) 2008-02-29 2009-03-02 Method for treating flexible laminar surfaces

Publications (2)

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

Family

ID=40292122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09715393A Active EP2255019B1 (de) 2008-02-29 2009-03-02 Verfahren zur behandlung biegsamer laminarer oberflächen

Country Status (6)

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

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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009107163A3 *

Also Published As

Publication number Publication date
ATE521719T1 (de) 2011-09-15
ITVI20080053A1 (it) 2009-09-01
ES2371818T3 (es) 2012-01-10
WO2009107163A3 (en) 2009-10-22
BRPI0907599A8 (pt) 2015-10-06
BRPI0907599A2 (pt) 2015-07-21
BRPI0907599B1 (pt) 2019-07-02
WO2009107163A2 (en) 2009-09-03
EP2255019B1 (de) 2011-08-24

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