IT202000025420A1 - VERTICAL PAINTING PROCESS OF ALUMINUM PROFILES - Google Patents
VERTICAL PAINTING PROCESS OF ALUMINUM PROFILES Download PDFInfo
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- IT202000025420A1 IT202000025420A1 IT102020000025420A IT202000025420A IT202000025420A1 IT 202000025420 A1 IT202000025420 A1 IT 202000025420A1 IT 102020000025420 A IT102020000025420 A IT 102020000025420A IT 202000025420 A IT202000025420 A IT 202000025420A IT 202000025420 A1 IT202000025420 A1 IT 202000025420A1
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- Prior art keywords
- overhead conveyor
- station
- profiles
- painting process
- painting
- Prior art date
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 18
- 229910052782 aluminium Inorganic materials 0.000 title claims description 18
- 238000007591 painting process Methods 0.000 title claims description 18
- 238000011282 treatment Methods 0.000 claims description 26
- 238000010422 painting Methods 0.000 claims description 13
- 238000009825 accumulation Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000011179 visual inspection Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000004132 cross linking Methods 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 238000011161 development Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005530 etching Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 238000007590 electrostatic spraying Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 15
- 238000000576 coating method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- 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
- B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
- B05B13/0214—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe the liquid or other fluent material being applied to the whole periphery of the cross section of the elongated body
-
- 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
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0264—Overhead conveying means, i.e. the object or other work being suspended from the conveying means; Details thereof, e.g. hanging hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/0457—Storage devices mechanical with suspended load carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/20—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising load-carriers suspended from overhead traction chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/26—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles
- B65G47/261—Accumulating articles
- B65G47/268—Accumulating articles by means of belt or chain conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/26—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles
- B65G47/30—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a series of conveyors
- B65G47/31—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a series of conveyors by varying the relative speeds of the conveyors forming the series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
- B65G47/68—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor
- B65G47/69—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor the articles being accumulated temporarily
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G9/00—Apparatus for assisting manual handling having suspended load-carriers movable by hand or gravity
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/30—Change of the surface
- B05D2350/33—Roughening
- B05D2350/35—Roughening by chemical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
Description
Descrizione dell?invenzione avente per titolo: Description of the invention entitled:
?PROCEDIMENTO DI VERNICIATURA VERTICALE DI PROFILI DI ALLUMINIO? ?VERTICAL PAINTING PROCESS FOR ALUMINUM PROFILES?
Descrizione Description
Campo dell?invenzione Field of invention
La presente domanda di brevetto per invenzione si riferisce in generale al settore della serramentistica e in particolare a quello dei profili di alluminio. The present patent application for an invention refers in general to the sector of door and window frames and in particular to that of aluminum profiles.
L?invenzione ? applicabile a qualsiasi settore dove un tale tipo di procedimento possa essere vantaggiosamente utilizzato, ma preferibilmente questa riguarda il settore della verniciatura automatizzata dei profili di alluminio e ancora pi? in particolare il settore della verniciatura a polvere dei profili di alluminio. The invention? applicable to any sector where such a type of procedure can be advantageously used, but preferably this concerns the sector of automated painting of aluminum profiles and even more? in particular the powder coating sector of aluminum profiles.
Stato dell?arte State of art
? noto che il settore della verniciatura a polvere ha subito sempre forti incrementi fin dagli anni sessanta, grazie ai numerosi vantaggi rispetto alla pi? classica verniciatura liquida. Uno fra questi ? la facile automatizzazione del procedimento, oltre che la possibilit? di annullare la quasi totalit? degli sprechi grazie al semplice recupero dell?over-spray, il quale nella verniciatura liquida risulterebbe molto meno efficiente e complesso. L?evoluzione raggiunta dai sistemi automatici per verniciatura, qui descritta, ha permesso anche una maggior elasticit? del procedimento a favore di piccoli lotti di produzione e di numerosi cambi colore da effettuare nel ciclo produttivo. Inoltre, l?attenta distribuzione della polvere ha consentito una sensibile riduzione dell?over-spray rendendo possibile l?eliminazione dei sistemi di recupero, causa di cospicuo spreco di tempo a ogni cambio colore. ? It is known that the powder coating sector has always undergone strong increases since the sixties, thanks to the numerous advantages compared to the more? classic liquid paint. One of these? the easy automation of the procedure, as well as the possibility? to cancel almost all of waste thanks to the simple recovery of the over-spray, which in liquid painting would be much less efficient and complex. The evolution achieved by automatic systems for painting, described here, has also allowed greater flexibility? of the procedure in favor of small production lots and numerous color changes to be made in the production cycle. Furthermore, the careful distribution of the powder has allowed a significant reduction in over-spray, making it possible to eliminate recovery systems, the cause of a conspicuous waste of time at each color change.
In questo scenario, la verniciatura a polvere dei profili in alluminio rappresenta uno tra i procedimenti fondamentali, che pi? si ? evoluto nella tecnica. In this scenario, the powder coating of aluminum profiles represents one of the fundamental procedures, which most? yes ? evolved in technique.
Sono gi? noti nella tecnica diversi tipi di macchinari e relativi processi di verniciatura a polvere dei profili in alluminio, in grado di realizzare prodotti finiti aventi ottime caratteristiche sia in termini di resistenza agli insulti climatici che di aspetto estetico del prodotto finito. I'm already various types of machinery and related powder coating processes for aluminum profiles are known in the art, capable of producing finished products having excellent characteristics both in terms of resistance to climatic insults and in the aesthetic appearance of the finished product.
Tuttavia, ci? che serve a questo punto agli esperti del settore ? di ottenere un procedimento avente un elevato rendimento con un basso impiego di risorse umane associate, che sia il pi? possibile rispettoso dell?ambiente e che risulti totalmente atossico e privo di rischi per coloro che sono addetti alla lavorazione. However, there? what is needed at this point for experts in the sector? to obtain a procedure having a high yield with a low use of associated human resources, which is the pi? respectful of the environment as possible and which is totally non-toxic and risk-free for those involved in the processing.
Come sanno gli esperti del settore, a tutt?oggi uno dei punti critici dell?intero procedimento di verniciatura a polvere in verticale consiste nel fatto che la velocit? della linea aerea, a cui sono agganciati i profili, determina la durata dei singoli processi di trattamento in sequenza a cui sono sottoposti i profili stessi nonch? la durata totale dell?intero procedimento. Questo significa che non ? possibile muovere un oggetto agganciato in maniera singolare, se non senza muovere la catena e tutte le altre unit? di trasporto a questa solidali. Tale problema viene spesso ovviato realizzando percorsi multi-paralleli ovvero a zig-zag della linea aerea all?interno delle singole stazioni di trattamento, in modo da ritardarne la permanenza, ma che comunque rappresenta una criticit? rilevante per tutta la durata del procedimento nonch? per la progettazione delle diverse stazioni di trattamento. As experts in the sector know, to date one of the critical points of the entire vertical powder coating process consists in the fact that the speed? of the overhead line, to which the profiles are coupled, determines the duration of the individual sequential treatment processes to which the profiles themselves are subjected as well as? the total duration of the entire procedure. Does this mean that not ? Is it possible to move an attached object in a singular way, if not without moving the chain and all other units? of transport to this solidarity. This problem is often remedied by creating multi-parallel or zig-zag paths of the overhead line within the individual treatment stations, so as to delay their permanence, but which in any case represents a criticality. relevant for the entire duration of the proceeding as well as? for the design of the different treatment stations.
A questo si aggiunge la complessit? di aggancio e sgancio dei pezzi sulla linea di trasporto, che deve avvenire manualmente e che pertanto rappresenterebbe un punto critico dell?intero sistema automatizzato, rendendo impossibile di effettuarla a piacimento secondo le sopra esposte necessit? di permanenza dei profili nelle fasi di trattamento. Added to this is the complexity of hooking and unhooking of the pieces on the conveyor line, which must be done manually and which therefore would represent a critical point of the entire automated system, making it impossible to carry it out at will according to the aforementioned needs? permanence of the profiles in the treatment phases.
Altra criticit? derivante dall?impiego dei sistemi di cui sopra ? che spesso l?intera linea produttiva deve trattare piccoli lotti di prodotto, ognuno dei quali deve pervenire a caratteristiche determinate e che quindi potrebbe aver bisogno di trattamenti differenti sia per quanto riguarda la durata e sia per quanto riguarda la singola stazione di trattamento da impegnare nell?impianto. Other criticality? deriving from the use of the above systems ? that often the entire production line has to treat small batches of product, each of which must reach specific characteristics and which therefore may need different treatments both in terms of duration and as regards the single treatment station to be used in the ?plant.
Quindi, lo scopo della presente invenzione consiste in generale nel realizzare un procedimento di verniciatura verticale dei profili di alluminio progettato per risolvere i problemi di cui sopra, cos? come risulter? dalla descrizione particolareggiata di una sua forma di esecuzione esemplificativa e non limitativa, illustrata di seguito. Therefore, the object of the present invention consists in general in realizing a vertical painting process of aluminum profiles designed to solve the above problems, so as to how will it turn out? from the detailed description of an exemplifying and non-limiting embodiment thereof, illustrated below.
Breve descrizione dell?invenzione Brief description of the invention
Con la presente domanda di brevetto per invenzione industriale si intende descrivere e rivendicare un procedimento dotato di almeno una soluzione nuova e alternativa alle soluzioni finora note e in particolare si propone di ovviare a uno o pi? degli inconvenienti o problemi sopra riferiti e/o di soddisfare una o pi? esigenze avvertite nella tecnica e in particolare evincibili da quanto sopra riferito. Allo scopo gli inventori hanno messo a punto un procedimento di verniciatura verticale dei profili di alluminio, laddove per profili di alluminio intendiamo barre e profilati di alluminio aventi una lunghezza compresa tra i 600 cm e i 700 cm, il quale per la sua linea aerea si serve innovativamente di un doppio sistema costituito da un comune convogliatore aereo birotaia primario e di almeno un comune convogliatore aereo monorotaia secondario avente una velocit? inferiore, reciprocamente paralleli e articolabili a livello di molteplici spintori azionati pneumaticamente e posizionati in molteplici punti della linea, come ad esempio tra una stazione di trattamento e la successiva. Dette rotaie di entrambi i sistemi accolgono e movimentano le singole unit? di trasporto a ognuna delle quali, tramite bilancelle, sono agganciati i singoli profili di alluminio da trattare. Partendo dalla considerazione che detti due sistemi possiedono velocit? molto differenti, lo scambio tramite l?azione degli spintori pneumatici delle unit? di trasporto da un sistema all?altro e viceversa consente nel complesso di modulare la velocit? di ogni singola unit? di trasporto e quindi di ogni relativo profilo agganciato, all?interno delle singole stazioni di trattamento costituenti l?impianto e in modo da compiere, in una successione logica predeterminata, le fasi previste dal ciclo di verniciatura a polvere e rendendo il tracciato del trasportatore aereo integrabile perfettamente nel ciclo produttivo con i richiesti tempi di trattamento. Si forma in tal modo un percorso articolato all?interno dell?impianto, per raggiungere le singole stazioni di trattamento e per il tempo necessario, ottenendo un sistema perfettamente aderente a tutte le differenti esigenze richieste nelle differenti stazioni di trattamento. Pertanto, nell?impianto si possono creare zone a velocit? di marcia diversa, ma anche zone di accumulo delle unit? di trasporto con i relativi profili agganciati e pronti a essere movimentati nelle varie stazioni di trattamento. Laddove necessario sulla linea aerea dell?impianto possono essere create anche le zone di accumulo, realizzate creando percorsi del sistema monorotaia secondario che si allontanano da quello primario e quindi creando tragitti e tempi di percorrenza ancora pi? lunghi. Altres? e al bisogno, allo scopo di ottenere le zone di accumulo ? possibile creare ulteriori sistemi monorotaia ausiliari. With the present patent application for an industrial invention it is intended to describe and claim a process equipped with at least one new and alternative solution to the hitherto known solutions and in particular it is proposed to overcome one or more of the drawbacks or problems referred to above and / or to satisfy one or more? needs perceived in the technique and in particular inferable from the above. For this purpose, the inventors have developed a vertical painting process for aluminum profiles, where by aluminum profiles we mean aluminum bars and profiles having a length between 600 cm and 700 cm, which for its overhead line uses innovatively of a double system consisting of a common primary two-rail overhead conveyor and at least one common secondary monorail overhead conveyor having a speed? lower, mutually parallel and articulated at the level of multiple pushers pneumatically operated and positioned in multiple points of the line, such as for example between one treatment station and the next. These rails of both systems welcome and move the single units? conveyor to each of which, by means of hangers, the individual aluminum profiles to be treated are hooked. Starting from the consideration that these two systems have speed? very different, the exchange through the action of the pneumatic pushers of the unit? of transport from a system to? other and vice versa allows in the complex to modulate the speed? of each single unit? of transport and therefore of each related hooked profile, inside the individual treatment stations making up the plant and in such a way as to carry out, in a predetermined logical succession, the phases envisaged by the powder coating cycle and making the route of the overhead conveyor can be perfectly integrated into the production cycle with the required treatment times. In this way, an articulated path is formed inside the plant, to reach the individual treatment stations and for the necessary time, obtaining a system that perfectly adheres to all the different needs required in the different treatment stations. Therefore, in? the plant can be created zones to speed? of different gear, but also areas of accumulation of the unit? with the relative profiles hooked up and ready to be moved to the various treatment stations. Where necessary, accumulation zones can also be created on the overhead line of the plant, created by creating paths of the secondary monorail system that move away from the primary one and therefore creating even shorter journeys and travel times. long. Others? and as needed, in order to obtain the accumulation zones ? possible to create additional auxiliary monorail systems.
Altri vantaggi del presente trovato risulteranno dalla descrizione particolareggiata di una sua forma di esecuzione esemplificativa e non limitativa, illustrata di seguito. Other advantages of the present invention will result from the detailed description of an exemplifying and non-limiting embodiment thereof, illustrated below.
Breve descrizione dei disegni Brief description of the drawings
I precedenti vantaggi, nonch? altri vantaggi e caratteristiche della presente invenzione, verranno illustrati facendo riferimento ai disegni annessi e a una particolare forma preferita di attuazione, la quale ? da considerarsi puramente illustrativa e non limitativa o vincolante agli effetti della presente domanda di brevetto, in cui: The previous advantages, as well as? other advantages and features of the present invention will be illustrated with reference to the accompanying drawings and to a particular preferred embodiment, which is to be considered purely illustrative and not restrictive or binding for the purposes of this patent application, in which:
Fig. 1 ? una vista in pianta prospettica dell?intero impianto di verniciatura verticale di profili di alluminio secondo l?invenzione; Fig. 1 ? a perspective plan view of the entire vertical coating plant for aluminum profiles according to the invention;
Fig. 2 ? un diagramma di flusso dell?intero procedimento secondo l?invenzione; Fig. 3 ? un diagramma di flusso delle stazioni della fase di carico; Fig. 2 ? a flow diagram of the entire process according to the invention; Fig. 3 ? a flow diagram of the loading phase stations;
Fig. 4 ? un diagramma di flusso delle stazioni della fase di pretrattamento; Fig. 4 ? a flow chart of the pretreatment stage stations;
Fig. 5 ? un diagramma di flusso della stazione della fase di verniciatura; Fig. 5 ? a flow chart of the painting stage station;
Fig. 6 ? un diagramma di flusso delle stazioni della fase di polimerizzazione in forno; Fig. 6 ? a flow chart of the oven cure stage stations;
Fig. 7 ? un diagramma di flusso delle stazioni della fase di scarico. Fig. 7 ? a flow diagram of the unloading stage stations.
Descrizione dettagliata delle forme di realizzazioni preferite Detailed description of the preferred embodiments
Il presente trovato verr? ora descritto nei dettagli con riferimento alle figure e a una sua realizzazione preferita in queste mostrata, in cui per gli stessi componenti sono stati utilizzati identici riferimenti numerici. This invention will come now described in detail with reference to the figures and to a preferred embodiment thereof shown therein, in which identical reference numerals have been used for the same components.
Facendo riferimento alla Fig. 1 e al diagramma di flusso riportato nella Fig. 2, il concetto esposto consiste nell?aver ridotto alle sue parti essenziali il procedimento di verniciatura inventivo che, complessivamente si compone di una fase di carico 200 e di una fase di scarico 600 entrambe realizzate manualmente e di una fase di pretrattamento 300, di una fase di verniciatura 400 e di una fase di polimerizzazione in forno 500 totalmente automatizzate e laddove i profili in lavorazione sono trasportati nelle differenti fasi tramite un sistema convogliatore aereo 100 (Fig. 1) costituito da un comune convogliatore aereo birotaia primario 110 e da almeno un comune convogliatore aereo monorotaia secondario 120 avente una velocit? inferiore e in cui detto convogliatore aereo monorotaia secondario 120 realizza zone di accumulo 150. With reference to Fig. 1 and to the flow chart reported in Fig. 2, the concept exposed consists in having reduced to its essential parts the inventive painting process which, overall, consists of a loading phase 200 and a unloading 600 both performed manually and a pre-treatment phase 300, a painting phase 400 and a polymerization phase in an oven 500 totally automated and where the profiles being processed are transported to the different phases via an overhead conveyor system 100 (Fig. 1) consisting of a common primary two-rail overhead conveyor 110 and at least one common secondary monorail overhead conveyor 120 having a speed? lower and in which said secondary monorail overhead conveyor 120 creates accumulation areas 150.
Come rappresentato nelle Figg. 1 e 3, la fase di carico 200 comprende la stazione di controllo visivo 210 da parte degli operatori, che ispezionano le eventuali anomalie del materiale, la stazione di foratura del profilo 220 durante la quale viene realizzato un foro su un?estremit? del profilo, avente dimensioni tali da accogliere un gancio e infine la stazione di carico 230 nella quale ciascun profilo agganciato con il predetto gancio viene a sua volta collegato tramite una bilancella a una unit? di trasporto del predetto sistema convogliatore aereo 100. As represented in Figs. 1 and 3, the loading phase 200 comprises the visual inspection station 210 by the operators, who inspect any anomalies in the material, the profile drilling station 220 during which a hole is made on one end and of the profile, having dimensions such as to accommodate a hook and finally the loading station 230 in which each profile hooked with the aforesaid hook is in turn connected via a hanger to a unit? transport system of the aforementioned overhead conveyor system 100.
Come rappresentato nelle Figg. 1 e 4, la fase di pretrattamento 300, consistente in una conversione chimica dell?alluminio, comprende il passaggio dei profili agganciati a dette unit? di trasporto del predetto sistema convogliatore aereo 100 in un tunnel costituito da molteplici stazioni di trattamento poste in sequenza e comprendenti ciascuna almeno una vasca sottostante, nelle quali il liquido contenuto viene spinto per mezzo di pompe centrifughe al sistema di ugelli e di cascate che irrora il profilo da trattare. Detto passaggio dei profili agganciati avviene sequenzialmente nella stazione di sgrassaggio alcalino 310 per almeno 3 min alla temperatura di 50?C, a cui segue il lavaggio 311 con acqua di rete per almeno 2 min e il soffiaggio di aria forzata 312 per almeno 20 sec e comunque fino a completo gocciolamento; nella stazione di attacco acido depatinante 320 per almeno 4 min alla TA, a cui segue il lavaggio 321 con acqua di rete per almeno 2 min e il soffiaggio di aria forzata 322 per almeno 20 sec e comunque fino a completo gocciolamento; nella stazione di fluotitanazione 330 per almeno 3 min alla temperatura di 30?C, a cui segue il lavaggio 331 con acqua di rete per almeno 2 min, il lavaggio demi 332 con acqua demineralizzata per almeno 3 min, il soffiaggio di aria forzata 333 per almeno 20 sec e comunque fino a completo gocciolamento, l?asciugatura 334 in forno a una temperatura compresa tra 100?C e 120?C per almeno 14 min e il raffreddamento 335 fino a una temperatura non inferiore ai 20?C. As represented in Figs. 1 and 4, the pre-treatment phase 300, consisting of a chemical conversion of the aluminium, comprises the passage of the profiles hooked to said units? transport of the aforesaid overhead conveyor system 100 in a tunnel consisting of multiple treatment stations arranged in sequence and each comprising at least one underlying tank, in which the liquid contained is pushed by means of centrifugal pumps to the system of nozzles and cascades which sprays the profile to be treated. Said passage of the hooked profiles takes place sequentially in the alkaline degreasing station 310 for at least 3 minutes at a temperature of 50°C, followed by washing 311 with mains water for at least 2 minutes and forced air blowing 312 for at least 20 seconds and in any case until complete dripping; in the depatinating acid etching station 320 for at least 4 minutes at RT, followed by washing 321 with mains water for at least 2 minutes and forced air blowing 322 for at least 20 seconds and in any case until complete dripping; in the fluotitanation station 330 for at least 3 min at a temperature of 30°C, followed by washing 331 with mains water for at least 2 min, demi-washing 332 with demineralized water for at least 3 min, forced air blowing 333 for at least 20 sec and in any case until complete dripping, drying 334 in the oven at a temperature between 100°C and 120°C for at least 14 min and cooling 335 to a temperature not lower than 20°C.
Come rappresentato nelle Figg. 1 e 5, la fase di verniciatura 400 avviene nella stazione di verniciatura 410, la quale per ridurre i tempi di cambio colore comprende almeno due distinte comuni identiche cabine di verniciatura, nelle quali viene effettuata alternativamente la fase di verniciatura elettrostatica a spruzzo di una polvere verniciante termoindurente a base di resine poliestere per mezzo di pistole a effetto corona completamente meccanizzate e montate su almeno un reciprocatore. As represented in Figs. 1 and 5, the painting phase 400 takes place in the painting station 410, which in order to reduce the color change times comprises at least two distinct common identical painting booths, in which the electrostatic spray painting phase of a powder is carried out alternately thermosetting paint based on polyester resins by means of fully mechanized corona effect guns mounted on at least one reciprocator.
Come rappresentato nelle Figg. 1 e 6, la fase di polimerizzazione in forno 500 comprende la stazione di reticolazione in forno 510 a una temperatura compresa tra 190?C e 200?C per almeno 30 min e la fase di raffreddamento 520 fino alla TA. Come rappresentato nelle Figg. 1 e 7, la fase successiva di scarico 600 comprende la stazione di sgancio 610 dei profili verniciati dalle rispettive unit? di trasporto, la stazione di controllo visivo 620 per valutare la qualit? della finitura e infine la stazione di imballaggio 630. As represented in Figs. 1 and 6 , the oven polymerization step 500 comprises the oven crosslinking station 510 at a temperature between 190°C and 200°C for at least 30 min and the cooling step 520 up to RT. As represented in Figs. 1 and 7, the subsequent unloading phase 600 comprises the release station 610 of the painted profiles from the respective units? transport, the visual inspection station 620 to evaluate the quality? finishing and finally the packing station 630.
Come meglio rappresentato in Fig. 1, il procedimento di verniciatura si serve di un innovativo sistema convogliatore aereo 100 costituito da un comune convogliatore aereo birotaia primario 110 e da almeno un comune convogliatore aereo monorotaia secondario 120 avente una velocit? inferiore, posti reciprocamente paralleli e articolabili a livello dei molteplici spintori 190 azionati pneumaticamente e posizionati in molteplici punti della linea aerea predetta, come ad esempio tra una stazione di trattamento e la successiva, che accolgono e movimentano le predette singole unit? di trasporto a ognuna delle quali, tramite bilancelle, sono agganciati i singoli profili di alluminio da trattare o trattati. I predetti due convogliatori possiedono velocit? molto differenti e lo scambio tramite l?azione dei predetti spintori pneumatici delle unit? di trasporto da un convogliatore aereo all?altro e viceversa consente nel complesso di modulare la velocit? di ogni singola unit? di trasporto e quindi del profilo agganciato all?interno delle predette singole stazioni di trattamento costituenti l?impianto. Questa soluzione secondo la presente invenzione costituisce un compromesso ottimale, in quanto viene realizzato un percorso articolato all?interno dell?impianto, per raggiungere le singole stazioni di trattamento e per il tempo necessario, ottenendo un sistema perfettamente aderente a tutte le differenti esigenze richieste nelle differenti stazioni di trattamento. Pertanto, nell?impianto vengono innovativamente create zone a velocit? di marcia diversa ma anche zone di accumulo delle unit? di trasporto con i relativi profili agganciati e pronti a subire gli ulteriori trattamenti. As better represented in Fig. 1, the painting process makes use of an innovative overhead conveyor system 100 consisting of a common primary two-rail overhead conveyor 110 and at least one common secondary monorail overhead conveyor 120 having a speed? lower, mutually parallel and articulated at the level of the multiple pneumatically operated pushers 190 and positioned at multiple points of the aforesaid overhead line, such as for example between one treatment station and the next, which receive and move the aforesaid individual units? conveyor to each of which, by means of hangers, the individual aluminum profiles to be treated or treated are hooked. The aforementioned two conveyors have speed? very different and the exchange through the action of the aforementioned pneumatic pushers of the unit? transport from an overhead conveyor to? Another and vice versa allows on the whole to modulate the speed? of each single unit? of transport and therefore of the profile hooked inside the aforesaid single treatment stations constituting the plant. This solution according to the present invention constitutes an optimal compromise, since an articulated path is created inside the plant, to reach the individual treatment stations and for the necessary time, obtaining a system that perfectly adheres to all the different needs required in the different treatment stations. Therefore, speed zones are innovatively created in the system? of different gear but also areas of accumulation of the unit? transport with the relative profiles hooked up and ready to undergo further treatments.
Per rendere detta invenzione ancora pi? corrispondente ai molteplici standard di verniciatura a polvere esistenti nella tecnica e quindi con la possibilit? di poter modulare ulteriormente la velocit? di trasferimento dei profili nell?impianto a livello della stazione di carico 100 e della stazione di scarico 600 sono create preferibilmente le zone di accumulo 150, in cui queste sono realizzate sulla linea aerea dell?impianto creando percorsi del sistema convogliatore aereo monorotaia secondario 120 che si distanziano da sistema convogliatore aereo birotaia primario 110 e quindi creando tragitti e tempi di percorrenza ancora pi? lunghi. To make this invention even more corresponding to the multiple powder coating standards existing in the technique and therefore with the possibility? to be able to further modulate the speed? for the transfer of the profiles in the plant at the level of the loading station 100 and of the unloading station 600 the accumulation zones 150 are preferably created, in which these are made on the overhead line of the plant creating paths of the secondary monorail overhead conveyor system 120 which distance themselves from the primary two-rail overhead conveyor system 110 and therefore creating even more journeys and travel times? long.
Altres? e al bisogno, allo scopo di ottenere ulteriori zone di accumulo 150 ? possibile utilizzare ulteriori convogliatori aerei birotaia ausiliari. Others? and as needed, in order to obtain additional storage areas 150 ? It is possible to use additional auxiliary two-rail overhead conveyors.
Quindi a tutto vantaggio della praticit? e dell?economia, la presente invenzione ha come obbiettivo principale quello di proporre un procedimento di verniciatura, in cui sussiste la possibilit? di poter modulare a piacimento la velocit? dei profili di alluminio da trattare in ciascuna stazione di trattamento durante tutte le fasi del ciclo produttivo e ci? rappresenta un innegabile vantaggio rispetto a quanto presente nello stato dell?arte e nello specifico: So to the benefit of practicality? and economy, the present invention has as its main objective that of proposing a painting process, in which there is the possibility? to be able to modulate the speed at will? of the aluminum profiles to be treated in each treatment station during all phases of the production cycle and what? represents an undeniable advantage compared to what is present in the state of the art and specifically:
- in ciascuna stazione di trattamento non sono necessarie apparecchiature aventi grandi dimensioni idonee ad aumentare il percorso della linea aerea e quindi il tempo di permanenza dei profili all?interno delle stesse e ci? si riflette inequivocabilmente sulla realizzazione di impianti pi? snelli, gestibili e facilmente realizzabili sia da un punto di vista economico che ambientale; - in each treatment station there is no need for equipment having large dimensions suitable for increasing the route of the overhead line and therefore the permanence time of the profiles inside them and this? is reflected unequivocally on the construction of plants pi? streamlined, manageable and easily achievable both from an economic and an environmental point of view;
- a livello dei tunnel di pretrattamento ? possibile ricavare in ogni stazione una zona di gocciolamento a velocit? ridotta, anche supportata dall?utilizzo dell?aria compressa, in grado di minimizzare gli effetti di inquinamento dovuti al gocciolamento di liquido residuale sul profilo nella vasca della stazione successiva e ci? a tutto vantaggio dei continui reintegri delle concentrazioni dei soluti nelle varie vasche, che sono necessari negli impianti dell?arte nota. - at the level of the pre-treatment tunnels ? is it possible to obtain in each station a dripping area at speed? reduced, also supported by the use of compressed air, capable of minimizing the effects of pollution due to the dripping of residual liquid on the profile in the tank of the next station and this? to the full advantage of the continuous replenishment of the concentrations of the solutes in the various tanks, which are necessary in the plants of the prior art.
Un?altra caratteristica tecnica che diversifica il procedimento di verniciatura oggetto della presente invenzione ? che questo, come risulta ovvio a coloro che sono esperti della tecnica, non potrebbe verificarsi se non a fronte di un idoneo sistema di controllo dei parametri in grado di raggiungere un elevatissimo livello di automatismo, cos? da garantire un maggior grado di riproducibilit? delle finiture e incrementare la qualit? della produzione. Allo scopo, gli inventori della presente privativa hanno messo a punto uno strumento diagnostico e gestionale costituito da un sistema controllore logico programmabile, il quale mediante appropriati sistemi elettrici e pneumatici, comunica con i diversi componenti dell?impianto per garantirne il regolare funzionamento e controllarne i diversi parametri. Fondamentalmente il compito del controllore logico programmabile ? quello di controllare e garantire la movimentazione e la velocit? delle unit? di trasporto azionando anche gli opportuni predetti spintori 190 azionati pneumaticamente e posti sull?intero percorso del sistema convogliatore aereo 100 (Vedi Fig. 1), in modo da gestire i cicli e i tempi stabiliti nelle diverse fasi di trattamento. Per fare ci? le indicazioni relative a ogni prodotto vengono inserite nella memoria del computer e selezionate da un operatore, grazie all?introduzione del codice specifico del prodotto al momento dell?inserimento in impianto dei pezzi da verniciare. Con il medesimo sistema si regolano i dosaggi automatici dei reintegri in alcune vasche, assicurandone un corretto funzionamento. Risulta ovvio che un controllo automatico di tutta la struttura sia importante per il corretto funzionamento del procedimento, in quanto permette di monitorare le variabili significative coinvolte e di stabilizzarne i parametri. Un simile controllo ? rilevante anche per quanto riguarda la sicurezza dell?impianto, che ? infatti garantita mediante l?accensione di allarmi che avvisano il personale e dalla presenza di sistemi che impediscono lo svilupparsi di situazioni pericolose. Il sistema controllore logico programmabile ha anche la funzione di mettere in comunicazione le tante unit? remote presenti, ovvero deve effettuare una connessione tra i sensori e gli attuatori presenti nell?impianto e questa coordinazione viene realizzata tramite un software appositamente elaborato. Con questo sistema si possono tenere sotto controllo i diversi parametri di procedimento come la temperatura, il livello di liquido in vasca, il pH della soluzione e cos? facendo tutti i parametri possono essere gestiti tranquillamente dagli operatori attraverso l?utilizzo del computer. Un puntuale controllo dei parametri risulta necessario per ottenere prodotti di qualit? e garantire la riproducibilit? nel tempo del procedimento. Another technical characteristic which diversifies the painting process which is the object of the present invention ? that this, as is obvious to those who are experts in the art, could not occur without a suitable parameter control system capable of achieving a very high level of automation, so? to ensure a greater degree of reproducibility? of the finishes and increase the quality? of the production. For this purpose, the inventors of the present patent have developed a diagnostic and management tool consisting of a programmable logic controller system which, by means of appropriate electrical and pneumatic systems, communicates with the various components of the plant to guarantee its regular operation and check its different parameters. Basically the task of the programmable logic controller ? to check and ensure the handling and speed? of the units? transport by also activating the suitable pneumatically operated pushers 190 located along the entire path of the overhead conveyor system 100 (See Fig. 1), so as to manage the cycles and times established in the various treatment phases. To do what? the information relating to each product is entered into the computer's memory and selected by an operator, thanks to the introduction of the specific product code when the pieces to be painted are inserted into the system. The same system regulates the automatic dosages of the replenishments in some tanks, ensuring their correct functioning. It is obvious that an automatic control of the whole structure is important for the correct functioning of the procedure, as it allows to monitor the significant variables involved and to stabilize the parameters. Such a check? also relevant with regard to the safety of the system, which ? in fact guaranteed by the switching on of alarms which warn the personnel and by the presence of systems which prevent the development of dangerous situations. The programmable logic controller system also has the function of connecting the many units? present, i.e. it must make a connection between the sensors and the actuators present in the system and this coordination is carried out using specially developed software. With this system it is possible to keep under control the various process parameters such as temperature, the level of liquid in the tank, the pH of the solution and so on. doing all the parameters can be easily managed by the operators through the use of the computer. Is a punctual control of the parameters necessary to obtain quality products? and ensure the reproducibility? during the proceedings.
Ovviamente i dati qui forniti sono puramente esemplificativi e assolutamente non limitativi della portata della presente invenzione, in quanto servono esclusivamente per mettere un tecnico del settore in grado di comprendere alcune possibili applicazioni e realizzazioni del procedimento inventivo, quindi servono piuttosto a estendere e non a limitare il contenuto della presente invenzione. Diverse ovvie modifiche potrebbero essere chiaramente apportate dal tecnico medio del settore alle precedenti realizzazioni esemplificative e non limitative descritte con riferimento alle figure, senza che ci? implichi un?estensione oltre il concetto inventivo, che ? alla base della presente invenzione, cos? come definito dalle seguenti rivendicazioni dipendenti. Obviously the data provided here are purely by way of example and absolutely not limiting of the scope of the present invention, as they serve exclusively to enable a person skilled in the sector able to understand some possible applications and embodiments of the inventive process, therefore they serve rather to extend and not limit the content of the present invention. Various obvious modifications could clearly be made by the average person skilled in the art to the previous exemplifying and non-limiting embodiments described with reference to the figures, without this? does it imply an extension beyond the inventive concept, which ? the basis of this invention, so? as defined by the following dependent claims.
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