EP2189544A1 - Dispositif pour le traitement du cuir et procédé correspondant - Google Patents

Dispositif pour le traitement du cuir et procédé correspondant Download PDF

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Publication number
EP2189544A1
EP2189544A1 EP09425477A EP09425477A EP2189544A1 EP 2189544 A1 EP2189544 A1 EP 2189544A1 EP 09425477 A EP09425477 A EP 09425477A EP 09425477 A EP09425477 A EP 09425477A EP 2189544 A1 EP2189544 A1 EP 2189544A1
Authority
EP
European Patent Office
Prior art keywords
plant
spray guns
automatic spray
cover products
guns
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
EP09425477A
Other languages
German (de)
English (en)
Other versions
EP2189544B1 (fr
Inventor
Antonio 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 EP2189544A1 publication Critical patent/EP2189544A1/fr
Application granted granted Critical
Publication of EP2189544B1 publication Critical patent/EP2189544B1/fr
Active legal-status Critical Current
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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
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/14—Auxiliary devices for leather-working machines, e.g. grinding devices for blading cylinders or dust-removal devices combined with the working machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/04—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for sequential operation or multiple outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0463—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length
    • B05B13/0484—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with spray heads having a circular motion, e.g. being attached to a rotating supporting element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • 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
    • 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 relates generally to an improved equipment for working flexible laminar surfaces, such as tannery leathers, and in particular relates to a leathers spraying equipment and a related working method.
  • the invention relates to a fully automated mode of cleaning the equipment and spray guns which can be performed simultaneously with the operation of paint spraying, thereby drastically reducing the shutdown of the entire equipment.
  • Spraying apparatuses or equipment for tannery leathers suitable to spray on the leathers several covering products such as paints, pigments, resins, oils, paraffin waxes, glues, etc., are currently known.
  • They essentially comprise a conveyor belt, which allows the progress of the leathers, a closed spray booth, where, by means of spray guns, the deposition of the covering products occurs, and a suction and fumes damping system, placed laterally the spray booth, through which the fumes of the covering products which are deposited on the lathers are sucked and filtered.
  • the suction system allows to damp the fumes coming from the paint resulting in air suspension
  • the spray booth can be of rotating type (where a rotating body, commonly called turntable, supports, through respective arms, a series of automatic spray guns), of reciprocating or elliptic type (which presents, as an alternative to the rotating body, a guide on which some trucks flow and support the spray guns).
  • the spraying of the leathers consists of covering the grain side with one or more layers of coating and dyeing material, in the form of elastic, thin and uniform and in a more or less high quantity film, depending on the coating level which is desired to achieve.
  • the spraying process normally takes place through rotating bodies which usually include a set of arms, commonly eight or twelve, more or less long and sloped, on which the spray guns are mounted.
  • Two spray guns are usually mounted on each arm, working with respective independent and opposite each other plants, so that if one of the two plants operates and, therefore, the correspondent spray gun performs the spraying, the other plant is stationary and so the other gun is in rest position.
  • FIG. 1 a rotating spray booth of conventional type is shown with 30 in the attached figure 1 , while figure 2 shows an enlargement of the detail indicated with A in figure 1 .
  • the spray booth 30 essentially comprises a main outer paneling 10, one or more conveyor belts of the leathers 11, a suction and fumes damping system 12 and a rotating body 13, which supports a series of more or less long and sloped arms 14, usually provided in a number of eight or twelve and radially arranged inside the spray booth 30, at the ends of which the automatic spray guns 15A, 15B are installed, usually provided in a number of two, working with two independent and opposite plants (i.e. either the plant associated with the gun 15A or that one associated with the gun 15B works).
  • the diameter around which the automatic spray guns 15A, 15B rotate is greater than the width of the conveyor belt 11, usually in a ratio equal to 1.41.
  • the duty cycle of each spray gun 15A, 15B corresponds, in the order, to a first area or work period 16 (during which the spraying of the guns 15A, 15B occurs), a first area of rest of the guns 15A, 15B, indicated with 17 in figure 3 , during which the washing of the guns 15A, 15B occurs and the spraying circuit is inactive or at rest, a second area or work period 18 (during which the guns 15A, 15B restart working) and finally a second area of rest 19 of both the plants of activation of the guns 15A, 15B, which corresponds to operator's access side in order to perform the scheduled maintenance operations.
  • Each of the work areas 16, 18 and the rest areas 17, 19 presents an amplitude of approximately 90°.
  • the elliptic spray boots of the known type present, as an alternative to rotating body 13, a guide on which some trucks flow and which support the automatic spray guns 15A, 15B.
  • the guide does not always remain in position above the conveyor belt 11 because, at the points of reversal of the transverse motion, the trucks tend to stay too long on the leather in progress, creating spraying unhomogeneity; therefore, also in case of use of elliptical spray booths, areas of rest of the spray guns 15A, 15B are highlighted.
  • the process of depositing covering products in general on the tannery leathers and, in particular, the spraying process of the leathers mentioned above comprises the following steps, which follow one another during the daily working:
  • the present invention seeks, therefore, to overcome the drawbacks mentioned above.
  • main purpose of the invention is to provide an improved equipment for working flexible laminar surfaces, such as tannery leathers, and to indicate a relative working method, which effectively allow to reduce the shutdown of the equipment, exploiting the rest areas of the sediment and/or spraying devices of the covering products.
  • a last but not least purpose of the invention is to implement an improved equipment for working flexible laminar surfaces, such as tannery leathers, which assures high operation reliability, compliance with the operating procedures and safety in general, compared to the traditional solutions.
  • the shutdown of the equipment is drastically reduced, making simultaneous the phases related to the sediment of the product on some lots of leathers to be treated in reciprocally similar way and to the preparation of the covering product for other lots of leathers with the cleaning phase of the sediment plant and the spray guns used, thus being able to carry out equipment and spray guns cleaning in hidden time.
  • one or both the areas of rest of the spray guns are exploited, i.e. the passage zones of the spray guns which are not above the conveyor belt of the leathers inside the treatment spray booth, working with one of the treatment plants of the leathers and proceeding, at the same time, with the cleaning of the other plant.
  • Spray guns are currently known in some forms of various kinds, which are divided, however, in few types: standard or traditional guns, high pressure guns, HVLP ("High Volume - Low Pressure") guns, “Airless” guns and “Airmix” (or “Air-combi”) guns.
  • the spray guns present a support rod 20, a colour input 21, needed for the adduction of the solution to be sprayed, a pilot air inlet (or needle air) 22, representing the pneumatic control which opens and closes the nozzle through which the colour is sprayed, and an inlet of atomizing air 23, i.e. the air which, through Venturi's effect, drags and nebulizes the colour (such an inlet 23 is present in all the guns except "Airless" or without air guns).
  • Standard guns those ones at high pressure and HVLP ("High Volume - Low Pressure"), whose principle scheme is illustrated in figure 5 , work with colour pressures lower than five bars and therefore need atomizing air;
  • "Airless” guns work instead with colour pressure between sixty and eighty bars, so, as soon as the colour reaches the lower outlet nozzle, it nebulizes without the use of proper air, while the "Airmix” guns present a mixed functioning, since they work both with the colour above thirty bars and with atomizing air.
  • Additional types of guns use a return plant, intercepted or not by centralized or independent valves.
  • the return plant not present in the "Airless" guns, consists of a second colour pipe, indicated with 25 in figures 6 and 7 , which works in parallel with the pipe 26 and the inlet 21 and, should the need arise and depending on the choices made, can also become a second inlet 24 (as shown in detail in figure 6 ); this second plant can always be left open, in order to allow the continuous supply of colour to the gun, or closed and used as a washing plant.
  • a colour flow regulator pneumatically controlled similar to an on-off valve 27, can be mounted on the inlet colour pipe 25 (as shown in detail in figure 7 ).
  • the present invention provides for the aim to exploit the use of two spray guns 15A, 15B, mounted on each arm 14 of the body 13 (as shown in the attached figures 1, 2 , 3 and 4 ), in such a way as, at each rotation or translation of the body 13 which supports the spray guns 15A, 15B, it is possible to perform the spraying of the leathers using, alternately, only one of the spray guns 15A, 15B, using the other one to automatically wash its own plant of colour adduction, at predetermined area indicated with 17 in figure 3 , while at the area indicated with 19 in figure 3 both plants of the spray guns 15A, 15B are at rest.
  • the invention allows indeed to prepare and load a second colour plant (i.e. a colour plant matched, for example, to the spray gun 15B), while the first plant is still working (matched, for example, to the spray gun 15A).
  • a second colour plant i.e. a colour plant matched, for example, to the spray gun 15B
  • the first plant is still working (matched, for example, to the spray gun 15A).
  • a source of input compressed air AI is indicated with 31, a ball valve of the main duct is indicated with 32, a pressure reducer of the pilot air AP is indicated with 33, a pressure reducer of the servo pilot air is indicated with 34, a pressure reducer of the pulverization air APL to be conveyed to the spray guns 15A, 15B (flows indicated respectively with APLA and APLB) is indicated with 35, a pressure regulator of air for the adjustment of the flow ARP is indicated with 36, a ball valve of the pump or membrane 39 for delivering colour to the related plants 28, 29, associated respectively with the standard or HVLP type spray guns 15A and 15B of each working arm 14, is indicated with 37, a pressure reducer filter of the pump 39 is indicated with 38, a colour tank is specified with 40, a tank of colour under pressure is denoted with 41, a ball valve of blowdown of the tank 41 is indicated with 42, a ball valve (optional) of blowdown for the return of the colour RCA
  • the number of spray guns 15A, 15B can vary depending on the number of arms 14 present in the spray booth 30 and depending on the quantity of spray guns themselves required for each arm 14, while each solenoid valve 49 is controlled by an electronic gearcase which recognizes it individually and manages its position.
  • the number of spray guns 15A, 15B can vary depending on the number of arms 14 present in the spray booth 30 and depending on the quantity of spray guns themselves required for each arm 14, while each solenoid valve 49 is controlled by an electronic gearcase which recognizes it individually and manages its position.

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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP09425477.8A 2008-11-25 2009-11-20 Dispositif pour le traitement du cuir et procédé correspondant Active EP2189544B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVI2008A000282A IT1392759B1 (it) 2008-11-25 2008-11-25 Apparecchiatura perfezionata per la lavorazione di superfici laminari flessibili, quali, in particolare, pelli di conceria e relativo metodo di lavorazione.

Publications (2)

Publication Number Publication Date
EP2189544A1 true EP2189544A1 (fr) 2010-05-26
EP2189544B1 EP2189544B1 (fr) 2014-07-23

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Family Applications (1)

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Country Status (2)

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EP (1) EP2189544B1 (fr)
IT (1) IT1392759B1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909027A (zh) * 2014-03-31 2014-07-09 张娜 自动喷涂仪
ITVI20130025A1 (it) * 2013-02-07 2014-08-08 Erretre Spa Impianto e procedimento per il trattamento superficiale di pelli di conceria
ITVR20130101A1 (it) * 2013-04-29 2014-10-30 Todesco S R L Impianto di verniciatura
WO2016203379A1 (fr) * 2015-06-19 2016-12-22 Ger Elettronica S.R.L. Installation améliorée de pulvérisation de peaux et similaires
ITUB20152036A1 (it) * 2015-07-09 2017-01-09 Erretre Spa Cabina di spruzzatura per il trattamento di pelli
ITUB20152584A1 (it) * 2015-07-29 2017-01-29 Todesco S R L Impianto di verniciatura per pelli e metodo per la realizzazione di tale impianto di verniciatura
CN107159492A (zh) * 2017-06-21 2017-09-15 袁静 一种皮革加工用自动喷涂装置
IT201600082936A1 (it) * 2016-08-05 2018-02-05 Cefla Soc Cooperativa Giunto rotante e macchina di verniciatura comprendente il giunto rotante
CN107670877A (zh) * 2017-10-27 2018-02-09 蚌埠抒阳自动化设备制造有限公司 一种门板快速喷漆加工设备
IT201700057435A1 (it) * 2017-05-26 2018-11-26 Ge Ma Ta Spa Macchina per la verniciatura di articoli di superficie estesa, tipo pelli e simili
CN109365193A (zh) * 2017-06-06 2019-02-22 周楚楚 一种转动式木门边框喷漆设备
WO2019215653A1 (fr) * 2018-05-10 2019-11-14 Dal Ceredo Technology S.R.L. Appareil de revêtement aérographe automatique et méthode de traitement utilisant ledit appareil
CN110961291A (zh) * 2019-12-29 2020-04-07 李嘉贵 一种音箱网罩表面自动喷涂工艺
IT201900000337A1 (it) * 2019-01-10 2020-07-10 Erretre Spa Cabina industriale rotativa per il trattamento di spruzzatura delle pelli
WO2020255104A1 (fr) * 2019-06-21 2020-12-24 Cefla Societa' Cooperativa Appareil pour appliquer de la peinture sur des pièces principalement plates
CN112323450A (zh) * 2020-11-03 2021-02-05 温州邑品鞋业有限公司 全自动送料服装裁剪机
CN114643155A (zh) * 2022-05-23 2022-06-21 山东鼎驰木业集团有限公司 木板加工用真空喷涂机
EP4273270A1 (fr) * 2022-04-29 2023-11-08 Todesco S.r.l. Station de prétraitement au plasma du cuir, et système de traitement du cuir comprenant une telle station et procédé de traitement de celui-ci

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112403725B (zh) * 2020-10-27 2023-04-28 蒙城县江淮毅昌汽车饰件有限公司 一种汽车配件涂装生产设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900600A2 (fr) * 1997-09-03 1999-03-10 Clariant Finance (BVI) Limited Procédé pour revêtir un substrat flexible avec une mousse polymérique
EP1586362A2 (fr) * 2004-04-08 2005-10-19 Bergi S.p.A. Dispositif de pulvérisation pour tannage de peaux

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900600A2 (fr) * 1997-09-03 1999-03-10 Clariant Finance (BVI) Limited Procédé pour revêtir un substrat flexible avec une mousse polymérique
EP1586362A2 (fr) * 2004-04-08 2005-10-19 Bergi S.p.A. Dispositif de pulvérisation pour tannage de peaux

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20130025A1 (it) * 2013-02-07 2014-08-08 Erretre Spa Impianto e procedimento per il trattamento superficiale di pelli di conceria
WO2014122682A1 (fr) * 2013-02-07 2014-08-14 Erretre S.P.A. Système et procédé de traitement externe de cuirs de tannerie
CN104981296A (zh) * 2013-02-07 2015-10-14 埃尔雷特股份有限公司 用于鞣制皮革的外部处理的系统和方法
ITVR20130101A1 (it) * 2013-04-29 2014-10-30 Todesco S R L Impianto di verniciatura
CN103909027A (zh) * 2014-03-31 2014-07-09 张娜 自动喷涂仪
WO2016203379A1 (fr) * 2015-06-19 2016-12-22 Ger Elettronica S.R.L. Installation améliorée de pulvérisation de peaux et similaires
ITUB20152036A1 (it) * 2015-07-09 2017-01-09 Erretre Spa Cabina di spruzzatura per il trattamento di pelli
WO2017006195A1 (fr) * 2015-07-09 2017-01-12 Erretre S.P.A. Cabine de pulvérisation pour le traitement des cuirs
ITUB20152584A1 (it) * 2015-07-29 2017-01-29 Todesco S R L Impianto di verniciatura per pelli e metodo per la realizzazione di tale impianto di verniciatura
CN107684985B (zh) * 2016-08-05 2020-07-07 塞弗拉合作社 旋转接头、喷涂方法和包括旋转接头的喷涂机器
IT201600082936A1 (it) * 2016-08-05 2018-02-05 Cefla Soc Cooperativa Giunto rotante e macchina di verniciatura comprendente il giunto rotante
EP3278881A1 (fr) * 2016-08-05 2018-02-07 Cefla S.C. Raccord tournant et machine de peinture comprenant le dit raccord tournant
US10486175B2 (en) 2016-08-05 2019-11-26 Cefla Societa' Cooperativa Rotating joint and painting machine
CN107684985A (zh) * 2016-08-05 2018-02-13 塞弗拉合作社 旋转接头和包括旋转接头的喷涂机器
IT201700057435A1 (it) * 2017-05-26 2018-11-26 Ge Ma Ta Spa Macchina per la verniciatura di articoli di superficie estesa, tipo pelli e simili
CN109365193A (zh) * 2017-06-06 2019-02-22 周楚楚 一种转动式木门边框喷漆设备
CN109365193B (zh) * 2017-06-06 2020-11-24 丽水市知科科技有限公司 一种转动式木门边框喷漆设备
CN107159492A (zh) * 2017-06-21 2017-09-15 袁静 一种皮革加工用自动喷涂装置
CN107670877A (zh) * 2017-10-27 2018-02-09 蚌埠抒阳自动化设备制造有限公司 一种门板快速喷漆加工设备
WO2019215653A1 (fr) * 2018-05-10 2019-11-14 Dal Ceredo Technology S.R.L. Appareil de revêtement aérographe automatique et méthode de traitement utilisant ledit appareil
CN112384305A (zh) * 2018-05-10 2021-02-19 达尔科雷都技术有限公司 自动喷枪涂覆装置及使用所述装置的处理方法
CN113286664A (zh) * 2019-01-10 2021-08-20 埃尔雷特股份有限公司 用于皮革喷涂处理的工业旋转室
IT201900000337A1 (it) * 2019-01-10 2020-07-10 Erretre Spa Cabina industriale rotativa per il trattamento di spruzzatura delle pelli
WO2020144512A1 (fr) * 2019-01-10 2020-07-16 Erretre S.P.A. Cabine rotative industrielle pour traitement par pulvérisation de cuir
CN113286664B (zh) * 2019-01-10 2023-03-14 埃尔雷特股份有限公司 用于皮革喷涂处理的工业旋转室
WO2020255104A1 (fr) * 2019-06-21 2020-12-24 Cefla Societa' Cooperativa Appareil pour appliquer de la peinture sur des pièces principalement plates
CN110961291A (zh) * 2019-12-29 2020-04-07 李嘉贵 一种音箱网罩表面自动喷涂工艺
CN112323450A (zh) * 2020-11-03 2021-02-05 温州邑品鞋业有限公司 全自动送料服装裁剪机
EP4273270A1 (fr) * 2022-04-29 2023-11-08 Todesco S.r.l. Station de prétraitement au plasma du cuir, et système de traitement du cuir comprenant une telle station et procédé de traitement de celui-ci
CN114643155A (zh) * 2022-05-23 2022-06-21 山东鼎驰木业集团有限公司 木板加工用真空喷涂机

Also Published As

Publication number Publication date
ITVI20080282A1 (it) 2010-05-26
IT1392759B1 (it) 2012-03-16
EP2189544B1 (fr) 2014-07-23

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