EP2803420A2 - Verbesserte Kabine zur Pulverbeschichtung von Gegenständen - Google Patents

Verbesserte Kabine zur Pulverbeschichtung von Gegenständen Download PDF

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Publication number
EP2803420A2
EP2803420A2 EP14165777.5A EP14165777A EP2803420A2 EP 2803420 A2 EP2803420 A2 EP 2803420A2 EP 14165777 A EP14165777 A EP 14165777A EP 2803420 A2 EP2803420 A2 EP 2803420A2
Authority
EP
European Patent Office
Prior art keywords
booth
powder coating
articles
overhead conveyor
interior
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.)
Withdrawn
Application number
EP14165777.5A
Other languages
English (en)
French (fr)
Other versions
EP2803420A3 (de
Inventor
Dario Amedeo ZUCCHETTI
Giovanni Giardini
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.)
Trasmetal SpA
Original Assignee
Trasmetal 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 Trasmetal SpA filed Critical Trasmetal SpA
Publication of EP2803420A2 publication Critical patent/EP2803420A2/de
Publication of EP2803420A3 publication Critical patent/EP2803420A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B05B13/0235—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 the movement of the objects being a combination of rotation and linear displacement
    • 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
    • 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
    • B05B13/0405—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 with reciprocating or oscillating spray heads
    • B05B13/041—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 with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/41—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of the booth
    • B05B14/412—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of the booth wherein the walls of the booth is perforated or porous walls and the walls are cleaned of or prevented from being contacted with excess material by a flow of fluid, e.g. air or water, directed into the booth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/45—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths using cyclone separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material
    • 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
    • B05B16/60—Ventilation arrangements specially adapted therefor
    • 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

Definitions

  • the present invention relates to a booth for powder coating articles and to a system for powder coating articles that uses this booth.
  • the present invention relates to a booth for powder coating particularly tall parts, such as aluminum profiles hanging vertically from an overhead conveyor that moves them through said booth.
  • each loop is normally rotated, continuously or more preferably with a reciprocating motion, between two rollers positioned in proximity of the base and of the upper end of the booth.
  • This rotation allows the application of suction systems to each sheet/wall, capable of removing the excess powder emitted by powder emitting devices, for example discs or electrostatic guns and which does not reach the parts to be coated (overspray).
  • a typical booth with electrostatic powder spray guns for the vertical coating of profiles normally consists of a movable base sheet and two or more movable vertical sheets.
  • the booth In the case of two vertical walls, the booth will have a triangular floor plan, while in the case of three walls the booth will have a square, rectangular or trapezoidal floor plan.
  • the booth In the example represented in Figs. 1 and 2 , the booth consists of three lateral walls 11, 12 and 13.
  • one side of the booth in the example of Fig. 1 and 2 , side 10) is normally left open and forms the front wall from which the spray guns face the inside of the booth.
  • a vertical suction ducts in the example in Figs. 1 and 2 , the ducts 21 and 22 connected to a cyclone 23 for collection of the powders.
  • a reciprocator 15 On the open side 10 of the booth, i.e. on the side without the movable sheet, there is positioned a reciprocator 15 on which there are mounted numerous spray guns (for example even in excess of twenty-four) normally arranged in two banks 16 and 17, one on the left and one on the right of the reciprocator 15.
  • Each bank normally consists of two or more rows of spray guns positioned one above the other, all oriented toward the parts 20 to be coated.
  • the ability to transfer the hook is necessary as coating systems often have more than one coating booth, and therefore the parts to be coated must be sent alternatively to one or other booth.
  • Perforated plates are normally fixed under the rotating hooks, on which the parts 30 to be coated are hung using metal hooks.
  • the overhead conveyor enters the booth from one end of the open side at the side of a bank of spray guns, and proceeds for a length toward the opposite wall or, in the case of triangular booths, toward the angle opposite the spray guns, until reaching the optimal distance for application with respect to the nozzles of the spray guns.
  • the conveyor curves so that the parts travel for a length of linear path in front of the first bank of spray guns which, moved from top to bottom and vice versa by the reciprocator, coat the face of the parts exposed thereto.
  • the hooks are rotated so that the face still to be coated is exposed to the second bank.
  • the conveyor continues its linear travel to the end of exposure to the second bank and then curves to reach the exit at the end opposite the open side at the side of the second bank of spray guns.
  • a typical problem is represented by the stack effect generated inside the booth.
  • the roof almost always consists of a simple metal grille to which the conveyor is fastened. In this way, the stack effect is not contained and the conveyor catalyzes only a part of the overspray.
  • the rest of the overspray besides accumulating on the grille and on the conveyor, escapes into the production department with consequent health and safety problems for operators.
  • accumulations on the grille and on the conveyor which consist of powders of different colors, periodically and unpredictably drop into the booth, contaminating the parts below.
  • the rotating hook permits a certain degree of freedom of the articles hanging therefrom, so that with parts of considerable length and in other sections of the system, for example inside the treatment tunnel and under the effect of the spray jets, despite optional upper guides, the part tends to rotate with the risk of becoming jammed between the ramps and/or fixed parts of the system.
  • the efficiency and safety of a coating booth are closely linked to the velocity at which the suction system moves the air inside the same booth.
  • An object of the present invention is therefore to provide a booth for powder coating articles that overcomes the problems and drawbacks of prior art booths.
  • an object of the present invention is to provide a booth for powder coating articles that prevents problems related to the deposition of powders on the structure of the booth and/or on the conveyor system.
  • a further object of the present invention to provide a booth for powder coating articles that prevents or reduces to a minimum the escape of powders into the environment surrounding the booth.
  • Yet another object of the present invention is to provide a booth for powder coating articles that optimizes the supply speed and movement of the air in the booth, without oversizing of the suction equipment.
  • One more object of the present invention is to provide a booth and a system for powder coating articles that solves problems linked to deposition and polymerization of the powder on the rotating hooks and on the conveyor.
  • a further object of the present invention is to provide a booth for powder coating articles which prevents the phenomena of deposition and accumulation of powder in the separator cyclones making resulting in the need to clean these cyclones.
  • One more object of the present invention is to provide a booth for powder coating articles that is easy to install and has competitive production and running costs.
  • a booth for powder coating articles characterized in that it comprises:
  • the stack effect which is the main cause of powder rising inside of the booth, is opposed without upsetting the coating process below.
  • said air blowing means comprise one or more pressurized chambers, which are operatively connected to an air supply system and which face the interior of said booth from above.
  • Said one or more pressurized chambers advantageously have an interface wall facing the inside of said booth which is at least partially porous and which allows air to flow from the pressurized chamber(s) toward the inside of said booth.
  • porous is intended as the capacity of a wall (or more generally of a separator baffle) to allow air to flow through it.
  • a microperforated metal sheet has the properties of porosity required by the present invention.
  • Other materials/structures such as porous baffles of various types, can in any case be used, provided that the air passage requirements are complied with.
  • said air blowing means convey into said booth an amount of air adapted to oppose rising of the powder coating into the upper part of said booth. In other words, by appropriately dosing the amount of air that is sent into the booth it is possible to create a curtain that blocks rising of the powder without interfering with the spray coating operations.
  • a preferred embodiment of the booth for powder coating articles according to the present invention provides for positioning of said overhead conveyor means above said air blowing means. In this way, it is possible to prevent these from becoming soiled due to rising and deposition of the powder thereon.
  • said overhead conveyor means can be positioned in a housing produced inside of said one or more chambers.
  • the lateral walls of said housing are preferably at least partially porous and allow air to flow from said one or more pressurized chambers toward said overhead conveyor means.
  • the overhead conveyor means can benefit from the pressurization condition determined by the blowing means.
  • a particular embodiment of the booth for powder coating articles according to the present invention provides for the presence of a covering in plastic material positioned above said overhead conveyor means. Therefore, the powder is prevented from escaping from the booth due to the presence of this covering.
  • said air blowing means comprise a plurality of nozzles that are adapted to send, for example, after receiving predefined commands, jets of air toward said covering in plastic material, preventing the accumulation of powder and thus ensuring cleanliness of the booth.
  • the present invention also relates to a booth for powder coating articles, characterized in that it comprises:
  • said means for at least partially closing said front wall comprise at least one wall that surrounds said powder coating dispensing means on the opposite side with respect to said front wall.
  • said means for at least partially closing said front wall can comprise a back wall and a first and a second lateral wall that surround said powder coating dispensing means on the opposite side with respect to said front wall.
  • said means for at least partially closing said front wall can also comprise an upper wall of said powder coating dispensing means.
  • this solution can be produced by positioning in the back part, on the sides and, if required, also at the top of the powder coating dispensing means, a casing that determines a reduction of the open part of the booth to only the inlet and outlet for the parts, so as to considerably increase the air velocity given the same size of suction equipment.
  • a further aspect of the present invention relates to a cyclone for separating powders from a gaseous flow, characterized in that it comprises:
  • a further aspect of the present invention relates to a system for powder coating articles, characterized in that it comprises:
  • this can be achieved by serving each booth with a loop of a secondary overhead conveyor that receives the parts from the main overhead conveyor of the system by transfer upstream of the booth and returns them to the same main overhead conveyor immediately downstream of the booth.
  • Each secondary overhead conveyor is thus equipped with its own rotating hooks that receive, through a transfer device positioned upstream of the booth, the perforated plates with the articles and after coating return them to the main overhead conveyor.
  • a booth 100 for powder coating articles 20 comprises a support structure 105 and one or more lateral walls defining an interior 140.
  • the booth 100 has a trapezoidal plan and comprises three lateral walls 110, 120, 130 defining the interior 140 of said booth 100 in which the operation to coat the articles 20 takes place.
  • a fourth side is left open and forms the front wall 101 from which powder coating dispensing means face the interior 140 of the booth 100.
  • each bank 160, 170 consists of several rows of spray guns positioned one above the other, all oriented toward the parts 20 to be coated.
  • the booth 100 also comprises suction means 210, 220 for drawing air from the interior 140 of the booth 100, consisting of suction manifolds positioned respectively at the join between the walls 110,120 and 120,130. These suction ducts 210 and 220 are connected to a cyclone 230 for powder collection.
  • the booth 100 according to the present invention is also provided with overhead conveyor means 300, for example a rail conveyor, positioned in the upper part of said booth 100.
  • These overhead conveyor means 300 are adapted to support the articles 20 to be coated, for example aluminum profiles, vertically hung from these through appropriate supporting means, and to convey them into the interior 140 of said booth 100.
  • the overhead conveyor 300 enters the booth 300 from one end of the open side 101 positioned between the bank of spray guns 160 and the lateral wall 110. Inside the booth 100, the overhead conveyor 300 proceeds for a stretch toward the wall 120, opposite the open wall 101, until reaching an optimal operating distance with respect to the dispensing spray guns.
  • the overhead conveyor 300 curves so as to convey the articles 20 for a stretch of linear path in front of the first bank of spray guns 160, which, moved with reciprocating motion from top to bottom by the reciprocator 150, coats the face of the articles 20 exposed thereto.
  • the hooks After exposure to the first bank of spray guns 160 the hooks are made to rotate in a known way so as to expose the face still to be coated to the second bank 170.
  • the overhead conveyor 300 then continues its linear travel until the end of exposure to the second bank of spray guns 170, and then curves to move toward the exit of the booth positioned at the end of the open side 101 between the bank of spray guns 170 and the lateral wall 130.
  • One of the main features of the booth 100 according to the present invention is represented by the fact that it comprises air blowing means 500 positioned in the upper part of said booth 100.
  • the air blowing means 500 convey into said booth 100 and in the upper portion thereof an amount of air adapted to oppose rising of the powder coating into the upper part of said booth 100.
  • said air blowing means 500 comprise one or more pressurized chambers 501, operatively connected to an air supply system, and which face the interior 140 of said booth 100 from above.
  • the pressurized chamber (or chambers) 501 have an interface wall 502 facing the inside 140 of said booth 100; this interface wall 502 is at least partially porous and allows air to flow from the pressurized chamber 501 toward the interior 140 of the coating booth 100.
  • the interface wall 502 is produced at least partially with a microperforated metal sheet or with a porous baffle or with other equivalent materials from the viewpoint of permeability to air.
  • a horizontal plenum consisting of a series of closed ducts in the part facing the inside of the booth 100, or of equivalent materials (for example, microperforated metal sheets and the like). Air is blown into the ducts and exits from the porous baffle to create a sort of air cushion that pushes the cloud of powder coating downward, preventing the upper part of the booth 100 and the devices contained therein (for example the overhead conveyor 300) from being soiled and opposing the stack effect without upsetting the coating process below
  • the overhead conveyor means 300 are positioned above said air blowing means 500, in order to prevent the powder coating rising inside the booth 100 from reaching them and being deposited thereon.
  • said overhead conveyor means 300 can be positioned in a housing 305 obtained inside said one or more pressurized chambers 501.
  • the lateral walls of said housing 305 are at least partially porous and allow air to flow from said one or more pressurized chambers 501 toward said overhead conveyor means 300.
  • the overhead conveyor means 300 and at least part of the rotating hooks fixed thereto can benefit from the pressurization condition determined by the air cushion created by the air blowing means 500.
  • a solution of this kind prevents powder from escaping from the upper part of the booth 100, ensuring that both the ceiling thereof and the overhead conveyor means 300 are not soiled by the powder coating and decreases the open part of the booth 100 so as to increase in the air velocity therein.
  • An alternative embodiment of the booth 100 for powder coating articles 20 according to the present invention provides for the presence of a covering in plastic material positioned above said overhead conveyor means 300.
  • the air blowing means can, for example, comprise a plurality of nozzles, air blades or similar devices, adapted to send, after receiving predefined commands, jets of air toward said covering in plastic material so as to perform cleaning thereof and prevent the accumulation of powder coating thereon.
  • the booth 100 for powder coating articles 20 can comprise, in place of or in addition to the air blowing means 500 positioned in the upper part thereof, means 600 for at least partially closing the front wall 101 of said powder coating dispensing means.
  • said means 600 for at least partially closing said front wall 101 can comprise at least one wall that surrounds said powder coating dispensing means on the opposite side with respect to said front wall 101.
  • said means 600 for at least partially closing said front wall 101 comprise a back wall 601 and a first 602 and a second 603 lateral wall that surround said powder coating dispensing means on the opposite side with respect to said front wall 101.
  • said means 600 for at least partially closing said front wall 101 can also comprise an upper wall 604 of said powder coating dispensing means.
  • this embodiment can be implemented by positioning in the back part, on the sides and, if necessary, also at the top of the reciprocator 150, a casing that determines limiting the open wall 101 of the booth 100 only to the inlet and outlet for the parts, so as to considerably increase the air velocity given the same size of suction equipment.
  • a particularly advantageous embodiment of the booth 100 for powder coating articles 20 according to the present invention provides for the simultaneous presence of air blowing means 500 positioned in the upper part thereof and of means 600 for at least partially closing the front wall 101 of the powder coating dispensing means.
  • a cyclone for separating powders from a gaseous flow according to the present invention.
  • the cyclone according to the present invention is illustrated in operating conditions ( Figs. 6a, 6b ) and in cleaning conditions ( Figs. 7a, 7b ).
  • the cyclone 8 for separating powders comprises a suction section 81 for inflow of a gaseous flow 810 containing powders.
  • the cyclone 8 also comprises a first central cone 82 which is operatively connected to said inflow suction section 81 and a second central truncated cone 83 comprising a section 830 for outflow of said gaseous flow 810.
  • One of the peculiar features of the cyclone 8 according to the present invention is represented by the fact that it comprises means 811 for closing said inflow suction section 81.
  • means 84 for supplying air or another gaseous fluid to the outer surface 831 of said second truncated cone 83 are movable between a closed position and an open position, according to an operating principle explained in more detail below.
  • the lower end 821 of said first central cone 82 is movable between a closed position and an open position.
  • the means 811 for closing the inflow suction section 81 are open, while the means 84 for supplying air or another gaseous fluid to the outer surface 831 of said second truncated cone 83 are closed, and the lower end 821 of the first central cone 82 is also in closed position.
  • the cyclone 8 according to the present invention operates in the same was as a conventional cyclone, with the gaseous flow 810 containing powder entering from the suction section 81 and exiting substantially powder free from the outflow section 830.
  • the means 811 for closing the inflow suction section 81 are instead closed, while the means 84 for supplying air or another gaseous fluid to the outer surface 831 of said second truncated cone 83 are open, and the lower end 821 of the first central cone 82 is also in open position.
  • the means 811 for closing said inflow suction section 81 can be of conventional type, for example a shut-off valve or damper.
  • said means 84 for supplying air or another gaseous fluid to the outer surface 831 of said second truncated cone 83 comprise, for example, one or more calibrated passages 841 positioned in the upper portion 832 of said second truncated cone 83.
  • said one or more calibrated passages 841 are operatively associated, for example, with corresponding dampers 842 for opening/closing said calibrated passages 841, said dampers 842 being activated by actuator means 843, such as actuator pistons or similar devices.
  • the movement of the lower end 821 of said first central cone 82 between a closed position and an open position can advantageously be produced, for example, by pivoting said lower end 821 of the first central cone 82 on the central part 822 of said first central cone 82.
  • other solutions that allow the movement thereof are possible.
  • cyclone 8 according to the present invention can conveniently be applied to the coating booths 100 described previously, it can also be used advantageously in other applications, both for coating and in other technological sectors.
  • the system for powder coating articles 20 comprises a booth 100 for powder coating said articles 20.
  • Said booth 100 can be of the type described previously, but also of different type.
  • the system for powder coating according to the present invention also comprises a first overhead conveyor 90 for moving said articles 20 in said system.
  • a second overhead conveyor 300 instead specifically serves said booth 100 for powder coating.
  • Said first overhead conveyor 90 advantageously comprises first hooks 91 associable with supporting plates 900 of said articles 20.
  • the second overhead conveyor 300 advantageously comprises second rotating hooks 92 associable with said supporting plates 900 of said articles 20.
  • One of the peculiar features of the system for powder coating according to the present invention is represented by the fact that the supporting plates 900 of said articles 20 can be transferred between said first hooks 91 of said first overhead conveyor 90 and said second rotating hooks 92 of said second overhead conveyor 300, and vice versa.
  • the system advantageously comprises first 301 and second 302 transfer means, positioned upstream and downstream of said booth 100, and which allow the transfer of the supporting plates 900 of the articles 20 between the first hooks 91 of said first overhead conveyor 90 and the second rotating hooks 92 of said second overhead conveyor 300, and vice versa.
  • the rotating hooks are only present in the coating booth 100 and do not enter the polymerization ovens located downstream of the booth.
  • said first hooks 91 comprise first coupling means 911 of said supporting plates 900
  • said second rotating hooks 92 comprise a rotating ring nut 920 associated with second coupling means 921 of said supporting plates 900.
  • said supporting plates 900 preferably comprise third coupling means 903 associable with said first 911 and second 921 coupling means.
  • said first 911 and second 921 coupling means are substantially the same as one another and comprise a hollow body 950 with an inlet groove 951.
  • the third coupling means 903 comprise a shuttle 931 adapted to slide inside said hollow body 950 through said inlet groove 951.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Paints Or Removers (AREA)
EP14165777.5A 2013-04-24 2014-04-24 Verbesserte Kabine zur Pulverbeschichtung von Gegenständen Withdrawn EP2803420A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000015U ITBG20130015U1 (it) 2013-04-24 2013-04-24 Cabina migliorata per la verniciatura a polvere di manufatti

Publications (2)

Publication Number Publication Date
EP2803420A2 true EP2803420A2 (de) 2014-11-19
EP2803420A3 EP2803420A3 (de) 2015-02-25

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EP14165777.5A Withdrawn EP2803420A3 (de) 2013-04-24 2014-04-24 Verbesserte Kabine zur Pulverbeschichtung von Gegenständen

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EP (1) EP2803420A3 (de)
IT (1) ITBG20130015U1 (de)

Cited By (5)

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ITUB20153166A1 (it) * 2015-08-19 2017-02-19 Anderlini Mecc S R L Sistema di presa di un tubo in una stazione di verniciatura del tubo stesso
CN111282735A (zh) * 2020-03-09 2020-06-16 戴森信息科技（杭州）有限公司 一种计算机生产用壳体喷涂装置
CN113414039A (zh) * 2021-05-25 2021-09-21 安庆中船柴油机有限公司 一种船用部件喷涂生产线的气体过滤系统
CN114082556A (zh) * 2021-11-19 2022-02-25 黑河学院 一种画架喷涂装置及操作方法
CN115475714A (zh) * 2022-07-27 2022-12-16 杭州凯畅五金制品有限公司 一种金属制品喷塑流水线及其喷塑工艺

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FR2441432A1 (fr) * 1978-11-15 1980-06-13 Air Ind Perfectionnements apportes aux enceintes pour le traitement de pieces
DE9116567U1 (de) * 1991-09-21 1993-01-28 Eisenmann Maschinenbau KG (Komplementär: Eisenmann-Stiftung), 7030 Böblingen Vorrichtung zur Vermeidung von Oversprayanhaftungen an der Kabinendecke von Pulverbeschichtungskabinen
DE10031985A1 (de) * 2000-06-30 2002-01-17 Basf Coatings Ag Sprühkabine
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CN114082556B (zh) * 2021-11-19 2023-03-14 黑河学院 一种画架喷涂装置及操作方法
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