EP0780160B1 - Dispositif de revêtement de poudre par pulvérisation - Google Patents

Dispositif de revêtement de poudre par pulvérisation Download PDF

Info

Publication number
EP0780160B1
EP0780160B1 EP96115438A EP96115438A EP0780160B1 EP 0780160 B1 EP0780160 B1 EP 0780160B1 EP 96115438 A EP96115438 A EP 96115438A EP 96115438 A EP96115438 A EP 96115438A EP 0780160 B1 EP0780160 B1 EP 0780160B1
Authority
EP
European Patent Office
Prior art keywords
air
delivery
additional
air outlet
flow
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.)
Expired - Lifetime
Application number
EP96115438A
Other languages
German (de)
English (en)
Other versions
EP0780160A1 (fr
Inventor
Guido Rutz
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.)
Gema Switzerland GmbH
Original Assignee
Gema Switzerland GmbH
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 Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Publication of EP0780160A1 publication Critical patent/EP0780160A1/fr
Application granted granted Critical
Publication of EP0780160B1 publication Critical patent/EP0780160B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B05B12/122—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to presence or shape of target
    • 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
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
    • B05B12/006—Pressure or flow rate sensors
    • 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
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying 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
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1683—Arrangements for supplying liquids or other fluent material specially adapted for particulate materials

Definitions

  • the invention relates to a powder spray coating device according to the preamble of Claim 1.
  • An electrostatic powder spray coater this type is from the US-A-4561380 known.
  • Another device known from EP-B-0 412 289 contains an injector for the pneumatic conveying of Coating powder from one powder container to one Spraying device; one connected to the injector Conveying air line, which with an adjustable first pressure setting device is provided; one to the Auxiliary gas line connected to injector, which with an adjustable second pressure setting device is; and a gas supply line for supplying compressed air to the two pressure setting devices.
  • the Gas supply line is a first flow meter arranged, which consists of the total amount of air Conveying air and additional air are displayed.
  • a second Additional gas line or purge air line is to the Sprayer connected, for example, by an electrode for electrostatically charging the Powder to hold powder particles so that the Do not attach powder particles to the electrode can.
  • the pressure setting devices can be adjustable Pressure regulator, adjustable flow restrictors, adjustable taps or the like. Air is that preferred medium, but other gases be used.
  • the one delivered by the injector The amount of powder depends on that of the injector amount of conveyed air supplied.
  • the powder flow rate is also depends on the amount of additional air if the Additional air in the vacuum area of the injector is initiated. However, the additional air is common downstream of the negative pressure area the conveying air powder flow fed.
  • the additional air can therefore perform two different tasks, namely one Influence powder flow rate and the other Flow rate of the powder stream downstream of the Influence injector. For the promotion of very small amounts of powder per unit of time it can be necessary to increase the flow of conveying air so strongly reduce that in the lines downstream of the Injector powder deposits.
  • the spray devices are preferably such trained that "electrostatic" with you can be coated. This means that the powder is electrostatically charged so that it is connected to the coating object adheres better before the Then powder layer in an oven on the object is melted, and thus less powder particles miss the object by scattering.
  • the Electrostatic charge can be caused by friction Powder particles on a duct wall in the Spray device are generated, so-called Frictional electricity or triboelectricity, or by electrical high voltage on one High voltage electrode, which in or next to the Flow path of the coating powder is arranged and preferably in or on the spray device is arranged.
  • the high voltage generator for generation the high voltage for the electrode can be external or be arranged within the spray device. High voltage electrostatic spray coaters are off, for example U.S. Patent 4,196,465.
  • Objects are usually coated in Cabins through which the objects are transported and into which the spray devices, so-called spray guns, through wall openings be introduced.
  • the object of the invention is to achieve the Powder spray coater like this train that for a color change and a Object change required time is reduced.
  • the invention enables the powder spray coating device to operate either by hand or automatically and has the following advantages:
  • An operator can, as in the prior art which he believes are optimal values for Conveying air and additional air for coating a certain object by hand. Furthermore, if the automatic mode is not satisfactory works, can be switched to manual operation at any time.
  • the operator or the operator Manufacturer of the powder spray coating device determined optimal values for conveying air and Additional air can be used for several different objects the one intended for automatic operation Control device can be stored.
  • the conveying air and the additional air automatically from the Control device on the object in question optimal values set which in the Control device are stored. So that needs Operator when changing to another Powder type no longer all values individually by hand adjust, but it is only necessary at the Control device to the powder type in question choose.
  • the Control device can depend on this Sensor signal automatically sends corresponding signals to the Control unit for the automatic setting of the Give conveying air and the additional air.
  • the Control device is preferably computerized and contains memory for storing the for different Objects and / or different types of powder and / or different object conveying speeds required conveying air values, additional air values and Conveying speed values. These values can be pressures and / or flow rates and / or electrical Be tensions.
  • the powder spray coating device shown in FIG. 1 contains the following parts: a control unit 2; a electronic control device 4; one as pneumatic pump acting injector 6 a powder spraying device 8th; a cabin 10.
  • a conveying air line 12 connects one Delivery air outlet 14 of the control unit 2 with a Delivery air inlet 15 of the injector 6.
  • the delivery air 15 generates a negative pressure in the injector 6, which over a suction line 16 coating powder from a Powder container 18 sucks in the conveying air flow and together with him via a powder line 20 the Spray device 8 is supplied, which the powder 22nd in the cabin 10 on an object 24 to be coated sprays.
  • the object 24 is transported by a conveyor 25, on which it depends, through wall openings 26 of the Carried cabin 10.
  • the powder can be in the spray device 8 either by friction on a duct wall or, accordingly Fig. 1 by the high voltage High voltage electrode 34 electrostatically charged be, which in the spray device 8 in Flow path of the powder is arranged and from a integrated into the spray device 8
  • High voltage generator 36 receives high voltage.
  • the High voltage generator 36 receives its low voltage supply voltage via an electrical line 38, which is connected to an adjustable potentiometer 40 of the Control unit 2 is connected so that by Adjustment of the potentiometer 40, the high voltage 34 can be switched on and off and set.
  • the powder particles on the high voltage electrode 34 not liable and possibly also for transfer of electrical charges from the High voltage electrode in the powder stream, it is from Flows around an electrode air line 42, which has an electrode air outlet 44 of the control device 2 with an electrode air inlet 45 of the Spray device 8 connects in terms of flow.
  • Control unit 2 contains in a housing 46 in addition to the potentiometer 40 and the Compressed air outlets 14, 32, 44: a compressed air supply connection 48, which over a Pressure setting element 49, for example a adjustable pressure regulator or an adjustable one Pressure reducing valve, and a solenoid valve 60 with one Compressed air outlet of this solenoid valve 60 can be connected, this compressed air outlet the internal Compressed air inlet 62 of the control unit 2 forms and always only with the compressed air supply connection 48 is fluidly connected when the solenoid valve 60 from a main switch 64 of the control unit 2 is turned on with the main switch 64 at the same time the power supply to the Potentiometer 40 turns on or when the Solenoid valve 60 also simultaneously the power supply switches off to potentiometer 40; a switch 66; a manually adjustable first Delivery air adjusting element 68 in the form of a adjustable pressure regulator or an adjustable Flow restrictor; one to the delivery air outlet 14 or downstream connected by flow Conveying air measuring device 70 (e.g.
  • a manually adjustable Additional air setting element 72 in the form of a adjustable pressure regulator, an adjustable Flow restrictor, proportional regulator or Proportional valve; an automatic or remote controlled adjustable second conveying air setting element 78 in Form of an adjustable pressure regulator or adjustable flow restrictor; a remote controlled or automatic first additional air setting element 82; a total air pressure flow meter 84, preferably a Variable area flowmeter, in one Compressed air supply line 86 for measuring the total compressed air consisting of conveying air and additional air, which from internal compressed air inlet 62 via the compressed air supply line 86 to a compressed air inlet "P" of the switch 66 flows; an electrode air adjusting member 88 in the form an adjustable pressure regulator or one adjustable flow restrictor; and an electrode air flow meter 90, preferably also a Variable area flowmeter.
  • the switch 66 can be operated manually or remotely the electronic (or pneumatic or hydraulic) control device 4 optionally between a manual mode position and an automatic mode position can be switched.
  • the switch 66 connects its compressed air inlet "P" in the Manual operation position with a compressed air outlet "H", and in its automatic mode with one Air outlet "A".
  • An electrode air flow path 92 leads from the internal compressed air inlet 62 over the Electrode air flow meter 90 and then over that Electrode air adjusting member 88 for the electrode air outlet 44, regardless of the switch 66.
  • the electrode air could also be via the changeover switch 66 be performed and then switched on by the switch 66 and be switchable.
  • a first conveying air path 94 leads from one Manual operation compressed air line 95, which to the Manual operation compressed air outlet "H" of switch 66 is connected via the manual delivery air setting element 68 and a first OR valve 96 to the delivery air outlet 14.
  • a second delivery air path 98 for automatic operation leads from the automatic compressed air outlet "A" of the switch 66 over a Automatic operation compressed air line 99 for Automatic conveying air setting element 78 and then over the first OR valve 96 to the delivery air outlet 14.
  • Das first OR valve 96 is from the delivery air pressure automatically switched so that it from the two Conveying airways 94 and 98 only the conveying airway connects to the delivery air outlet 14, in which Conveying air is supplied while the OR valve 96 at the same time admission of the other concerned Conveying airway 98 or 94 closes.
  • a first additional airway 100 for manual operation leads from the manual operation compressed air line 95, which to the Manual operation compressed air outlet "H" of switch 66 is connected via the first additional air setting element 72 for manual operation to a first Air inlet of a second OR valve 102 and whose compressed air outlet to the auxiliary air outlet 32nd second additional airway 104 leads from the Automatic operation compressed air line 99, which to the Automatic operation compressed air outlet "A” of switch 66 is connected via the second Additional air setting element 82 for automatic operation too a second compressed air inlet of the second OR valve 102 and from its compressed air outlet also to Auxiliary air outlet 32.
  • the second OR valve 102 connects only that of the two Additional airways 100 or 104 with the additional air outlet 32, in which additional air is conveyed during this second OR valve 102 has its compressed air inlet for the other additional airway 104 or 102 in question closes.
  • Fig. 2 are the manual operation of Compressed air flows through additional lines dash-dotted lines marked.
  • the switch 66 is in manual mode so that compressed air from the internal Compressed air inlet 62 via the compressed air supply line 86 only to manual operation compressed air outlet "H" of switch 66 can reach, but not to its automatic mode compressed air outlet "A".
  • the conveying air only flows via the first manual conveying air setting element 68 to Delivery air outlet 14, but not over the second Automatic conveying air setting element 78.
  • the additional air flows only through the first manual operation additional air setting element 72 to the additional air outlet 32, but not via the second automatic mode additional air setting element 82.
  • the switch 66 can by hand or by the higher-level control device 4 from automatic mode to manual mode or vice versa can be set, it is possible to set the Switch 66 manually into another position, especially in the automatic operating position toggle even if the parent Control device 4 manual operation calls.
  • the basic position of the switch 66 is manual. This is in the event of a fault in the control device 4 advantageous.
  • Automatic mode In automatic mode according to FIG. 3 the switch 66 switched to automatic mode, see above that compressed air from the internal compressed air inlet 62 via the Compressed air supply line 86 from the switch compressed air inlet "P" only for automatic operation compressed air outlet "A" of the Switch 66 can reach, but not to it Manual air outlet "H".
  • the at Automatic operation of lines through which compressed air flows are by a dashed line added to them marked.
  • conveying air can only be the automatic mode conveying air setting element 78 of the second delivery air path 98 to the delivery air outlet 14 reach, but not via the manual operation of the conveying air setting element 68 of the first conveyor airway 94.
  • Additional air can only be operated via the automatic mode additional air setting element 82 of the second Additional air path 104 to the additional air outlet, but not through the manual operation additional air setting element 72 of the first additional airway 100.
  • the automatic mode conveying air adjusting element 78 is via an electrical (pneumatic or hydraulic) line 106 to the control device 4 connected and controlled by her to the pressure and adjust the flow rate of the conveying air and / or regulate, depending on the type of coating object and / or of the type of coating powder used and / or the Conveying speed of the objects.
  • the Automatic operation additional air setting element 82 is over a second electrical (pneumatic or hydraulic) line 108 also to the Control device 4 connected and is by her actuated and / or regulated depending on the type and / or the conveying speed of the coating object and / or of the type of coating powder used.
  • the type used of the coating powder can the control device 4th entered manually or by a computer program from internal memory.
  • the type of Object 24, which is to be coated, can Electrode control device can be entered manually or by a computer program from an internal Memory can be accessed or from a Object detection sensor 110 are signaled, which besides the path of movement of the to be coated Object 24 is arranged and the control device 4th reports whether an object 24 is present and / or from what kind it is.
  • the control device 4 can be a Computer program included, which after a predetermined program flow the said memories retrieves the data required for coating a certain object are needed.
  • the spray device 8 can the coating powder by nozzle action or by using a Atomize the rotary head.
  • Fig. 1 shows a second control device 2.2 schematically shown, which is the same design as that described control unit 2 and corresponding Lines 106.2, 108.2 and 109.2 with the Control device 4 is connected to thereby further To supply spray devices 8 with compressed air.
  • the Switch 66 of all control units 2 and 2.2 etc. are each on their own control wiring harness 109 or 109.2 etc. connected to the control device 4.
  • a powder spray coating device according to the In principle, the invention is the same as that in FIG. 1 illustrated embodiment, only instead a single switch 66 two switches 66.1 and 66.2 are provided, one 66.1 each for the conveying air and a 66.2 for the additional air.
  • the remaining elements and all functions are the same as the powder spray coater of Fig. 1, why identical parts are provided with the same reference numbers and details are not described in detail.
  • Some identical parts of Fig.l are not in Fig. 4 shown, but also in practice in Fig. 4th available.
  • the conveying air flows in manual mode one after the other by the following elements: internal Compressed air inlet 62, total air flow meter 84, Compressed air supply line 86, conveying air switch 66.1, Manual operation conveying air setting element 68, first OR valve 96, conveying air outlet 14, injector 6, Spraying device 8.
  • auxiliary air flows in manual mode one after the other by the following elements: internal Compressed air inlet 62, total air flow meter 84, Compressed air supply line 86, additional air switch 66.2, Manual operation additional air setting element 72, second OR valve 102, auxiliary air outlet 32, injector 6, Spraying device 8.
  • This additional air flows in Automatic operation in succession through the following elements: Internal air inlet 62, total air flow meter 84, compressed air supply line 86, Auxiliary air switch 66.2, automatic operating auxiliary air setting element 82, second OR valve 102, Auxiliary air outlet 32, injector 6, spray device 8.
  • valves 96 and 102 instead of the two Or valves 96 and 102 also use other elements which are like a switchable flow switch work, by which only one out of two Compressed air inlets connected to a compressed air outlet can be.
  • the OR valves 96 and 102, and preferably others used instead switchable flow switches are preferably such trained to be from the pressure of the compressed air are automatically switched, which one Inlet to an outlet of the flow switch to be forwarded while the relevant other inlet connectable to the outlet the flow switch is closed.
  • the sensor 110 can be designed such that he the control device 4 the Conveying speed of objects 24 reports.
  • connection of the conveying air measuring device 70 e.g. for Pressure measurement and / or flow velocity measurement and / or measuring the flow rate per unit of time and / or total flow rate measurement
  • the connection of the conveying air measuring device 70 e.g. for Pressure measurement and / or flow velocity measurement and / or measuring the flow rate per unit of time and / or total flow rate measurement
  • the connection of the conveying air measuring device 70 has the Advantage that for manual and automatic operation overall only one such device is required. The same applies to the additional air if one corresponding additional air meter 70 to the Auxiliary air outlet 32 or downstream thereof is connected.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Claims (10)

  1. Dispositif de revêtement de poudre par pulvérisation, contenant au moins une unité de commande (2, 2.2) qui présente les caractéristiques suivantes :
    une évacuation d'air de transport (14) à laquelle peut être raccordée une conduite d'air de transport (12) pour l'amenée d'air de transPort à une pompe de transport par injecteur (6), afin de véhiculer pneumatiquement de la poudre de revêtement à un dispositif de pulvérisation (8); une première voie d'air de transport (94) menant à l'évacuation d'air de transport (14); un premier élément de réglage d'air de transport (68) actionnable manuellement, dans la première voie d'air de transport (94), à l'aide duquel l'air de transport allant à l'évacuation d'air de transport (14) peut être réglé concernant sa pression et/ou le débit massique de l'écoulement par unité de temps; une deuxième voie d'air de transport (98) qui mène également à l'évacuation d'air de transport (14); un deuxième élément de réglage d'air de transport (78) actionnable automatiquement depuis un dispositif de commande (4), dans la deuxième voie d'air de transport (98), caractérisé par un dispositif de commutation (66; 66.1; 66.2) entre une conduite d'amenée d'air comprimé (86) et les deux voies d'air de transport (94, 98), dispositif à l'aide duquel la conduite d'amenée d'air comprimé (86) peut être reliée à volonté à la première voie d'air de transport (94) ou à la deuxième voie d'air de transport (98), respectivement en amont de son élément de réglage d'air de transport (68, 78).
  2. Dispositif de revêtement de poudre par pulvérisation selon la revendication 1, caractérisé en ce que l'unité de commande (2, 2.2) contient en outre : une évacuation d'air additionnel (32), à laquelle peut être raccordée, par l'intermédiaire d'une conduite d'amenée additionnel (30), une admission d'air additionnel (33) de la pompe de transport par injecteur (6); une première voie d'air additionnel (100) qui mène à l'évacuation d'air additionnel (32); un premier élément de réglage d'air additionnel (72) réglable manuellement dans la première voie d'air additionnel (100), à l'aide duquel de l'air additionnel peut être réglé vers l'évacuation d'air additionnel, concernant sa pression et/ou son débit masse par unité de temps; une deuxième voie d'air additionnel (104) qui mène également à l'évacuation d'air additionnel (32); un deuxième élément de réglage d'air additionnel (82) actionnable automatiquement par le dispositif de commande (4), dans la deuxième voie d'air additionnel (104) pour régler l'air additionnel concernant sa pression et/ou son débit masse par unité de temps, au moyen du dispositif de commande (4); le dispositif de commutation (66; 66.1, 66.2) étant disposé également entre la conduite d'amenée d'air comprimé (86) et les deux voies d'air additionnel (100, 104), afin de relier la conduite d'amenée d'air comprimé (86) à volonté à la première voie d'air additionnel (100) ou à la deuxième voie d'air additionnel (104), chaque fois en amont de ces éléments de réglage d'air additionnel (72, 82).
  3. Dispositif de revêtement de poudre par pulvérisation selon la revendication 2, caractérisé en ce que la première voie d'air de transport (94) est raccordée, en amont de son premier élément de réglage d'air de transport (68) réglable à la main, à une première évacuation d'air comprimé (H) pour le fonctionnement manuel, et la voie d'air additionnel (100), en amont de son premier élément de réglage d'air additionnel (72) réglable à la main, est également reliée à la première évacuation d'air comprimé (H) pour le fonctionnement manuel du dispositif de commutation (66); en ce que la deuxième voie d'air de transport (98) est raccordé en écoulement en amont de son élément de réglage d'air de transport (78) réglable automatiquement et la deuxième voie d'air additionnel (104) est raccordée en écoulement, en amont de son élément de réglage d'air additionnel (82) réglable automatiquement, à une deuxième évacuation d'air comprimé (A) pour le fonctionnement en automatique du dispositif de commutation (66).
  4. Dispositif de revêtement de poudre par pulvérisation selon l'une des revendications précédentes, caractérisé en ce que dans la conduite d'alimentation en air comprimé (86) est disposé un appareil de mesure de débit (84) destiné à afficher par voie optique ou acoustique le débit d'écoulement total d'air par unité de temps, contenant l'air de transport et l'air additionnel.
  5. Dispositif de revêtement de poudre par pulvérisation selon l'une des revendications précédentes, caractérisé en ce que les voies d'air de transport (94, 98) peuvent être raccordées en aval de leurs éléments de réglage d'air de transport (68, 78) par un aiguillage d'écoulement (96) commutable automatiquement par l'air de transport, alternativement à l'évacuation d'air de transport (14).
  6. Dispositif de revêtement de poudre par pulvérisation selon l'une des revendications précédentes, caractérisé en ce que les deux voies d'air additionnel (100, 104) sont susceptibles d'être raccordées en aval de leurs éléments de réglage d'air additionnel (72, 82) par un aiguillage d'écoulement commutable de façon commandée par l'air additionnel lui'même, alternativement à l'évacuation d'air additionnel (32).
  7. Dispositif de revêtement de poudre par pulvérisation selon l'une des revendications précédentes, caractérisé en ce qu'au moins deux des unités de commande (2; 2.2) cités sont raccordées au dispositif de commande (4) automatique afin d'être commandées par lui.
  8. Dispositif de revêtement de poudre par pulvérisation selon l'une des revendications précédentes, caractérisé en ce que, au dispositif de commande automatique (4) est raccordé un capteur d'objet (110) destiné à percevoir les objets à revêtir, en fonction de ses signaux de capteur, le dispositif de commande (4) commandant ou régulant l'unité de commande (2, 2.2).
  9. Dispositif de revêtement de poudre par pulvérisation selon l'une des revendications précédentes, caractérisé en ce qu'à l'évacuation d'air de transport (14) est raccordé un appareil de mesure d'air de transport (70) pour la mesure de l'air de transport, tant en fonctionnement manuel, qu'également en fonctionnement en automatique.
  10. Dispositif de revêtement de poudre par pulvérisation selon la revendication 1 ou 2, caractérisé en ce que le dispositif de commutation présente un commutateur (66.1) pour l'air de transport et un commutateur (66.2) pour l'air additionnel.
EP96115438A 1995-12-23 1996-09-26 Dispositif de revêtement de poudre par pulvérisation Expired - Lifetime EP0780160B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19548607 1995-12-23
DE19548607A DE19548607A1 (de) 1995-12-23 1995-12-23 Pulver-Sprühbeschichtungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0780160A1 EP0780160A1 (fr) 1997-06-25
EP0780160B1 true EP0780160B1 (fr) 1999-12-22

Family

ID=7781327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115438A Expired - Lifetime EP0780160B1 (fr) 1995-12-23 1996-09-26 Dispositif de revêtement de poudre par pulvérisation

Country Status (5)

Country Link
US (1) US5776249A (fr)
EP (1) EP0780160B1 (fr)
AT (1) ATE187903T1 (fr)
CA (1) CA2193192C (fr)
DE (2) DE19548607A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19748376A1 (de) 1997-11-03 1999-05-06 Itw Gema Ag Verfahren und Vorrichtung zum Pulver-Sprühbeschichten
DE19748375A1 (de) 1997-11-03 1999-05-06 Itw Gema Ag Verfahren und Vorrichtung zum Pulver-Sprühbeschichten
DE19748821A1 (de) * 1997-11-05 1999-05-06 Itw Gema Ag Pulver-Sprühbeschichtungsvorrichtung
EP0943372A3 (fr) * 1998-03-19 2002-05-15 Peter Ribnitz Régulateur commandé de débit de poudre
DE19838279A1 (de) * 1998-08-22 2000-02-24 Itw Gema Ag Pulver-Sprühbeschichtungsvorrichtung
US6705545B1 (en) 1998-11-13 2004-03-16 Steelcase Development Corporation Quick color change powder paint system
US6112999A (en) 1998-11-13 2000-09-05 Steelcase Development Inc. Powder paint system and control thereof
US6797066B2 (en) * 2000-10-24 2004-09-28 Kabushiki Kaisya Yoshino Kosakujo Apparatus and method for powder coating
US6669780B2 (en) 2000-10-24 2003-12-30 Illinois Tool Works Inc. Color change booth
JP4688353B2 (ja) * 2001-06-29 2011-05-25 株式会社吉野工作所 高周波誘導加熱式の粉体塗装装置
US20020046702A1 (en) * 2000-10-24 2002-04-25 James M. Browning Powder coating system and method for quick color change
US6695220B2 (en) 2001-01-11 2004-02-24 Herman Miller, Inc. Powder spray coating system
JP3863029B2 (ja) * 2002-02-07 2006-12-27 大成化工株式会社 肩部を有する容器内面への粉体塗装装置並びに粉体塗装方法
DE102004052949A1 (de) * 2004-10-29 2006-05-04 Nordson Corp., Westlake Verfahren und Vorrichtung zur Überwachung von Strömungsverhältnissen in einem Leitungsstrang
DE102011088373A1 (de) * 2011-12-13 2013-06-13 Robert Bosch Gmbh Handfarbabgabevorrichtung
US10300504B2 (en) * 2013-07-19 2019-05-28 Graco Minnesota Inc. Spray system pump wash sequence
EP3801924B1 (fr) * 2018-06-06 2024-12-11 Nordson Corporation Distribution électrostatique d'un produit de revêtement antimicrobes
KR102649715B1 (ko) * 2020-10-30 2024-03-21 세메스 주식회사 표면 처리 장치 및 표면 처리 방법

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450092A (en) * 1965-07-08 1969-06-17 Vilbiss Co The De Color change apparatus
US3674205A (en) * 1971-05-14 1972-07-04 Champion Spark Plug Co Multiple color paint spray system
US4077354A (en) * 1976-10-07 1978-03-07 Walberg Arvid C Fast discharge electrostatic coating system
DE2849295C2 (de) * 1978-11-14 1985-04-04 Ransburg-Gema AG, St.Gallen Sprühbeschichtungsvorrichtung zum Beschichten von Gegenständen
US4561380A (en) * 1984-06-21 1985-12-31 Nordson Corporation Method and apparatus for powder coating a moving web
JPH0643911B2 (ja) * 1985-09-17 1994-06-08 アイ・ティー・エム株式会社 気体搬送粉体供給システム
SU1358998A1 (ru) * 1986-03-11 1987-12-15 Проектный Институт Научно-Производственного Объединения "Лакокраспокрытие" Установка дл автоматического нанесени покрыти "Силуэт
US4863316A (en) * 1987-07-01 1989-09-05 The Perkin-Elmer Corporation Closed loop powder flow regulator
DE3721875A1 (de) * 1987-07-02 1989-01-12 Gema Ransburg Ag Verfahren und einrichtung fuer eine pulverspruehbeschichtungsanlage
DE3926624A1 (de) * 1989-08-11 1991-02-14 Gema Ransburg Ag Elektrostatische pulverbeschichtungseinrichtung
DE9015069U1 (de) * 1990-11-02 1991-01-17 Bopla Gehäuse Systeme GmbH, 4980 Bünde Gehäuse für elektrische oder elektronische Bauelemente
DE69317706T2 (de) * 1992-07-08 1998-07-30 Nordson Corp Apparat und Verfahren zum Auftrag von diskontinuierlichen Beschichtungen
CH688989A5 (de) * 1993-03-26 1998-07-15 Ribnitz Peter Vorrichtung zum Fördern von Pulver
DE4312837C1 (de) * 1993-04-20 1994-10-06 Lancier Masch Peter Vorrichtung zur Strömungsmessung in Druckluftanlagen und Strömungsmeßeinrichtung hierfür
DE4325044C2 (de) * 1993-07-26 2002-07-18 Itw Gema Ag Pulverfördervorrichtung, insbesondere für Beschichtungspulver
US5558713A (en) * 1994-10-31 1996-09-24 The Procter & Gamble Company Method and apparatus for forming a pulsed stream of particles for application to a fibrous web

Also Published As

Publication number Publication date
CA2193192C (fr) 2000-02-22
DE59603977D1 (de) 2000-01-27
ATE187903T1 (de) 2000-01-15
CA2193192A1 (fr) 1997-06-24
DE19548607A1 (de) 1997-06-26
US5776249A (en) 1998-07-07
EP0780160A1 (fr) 1997-06-25

Similar Documents

Publication Publication Date Title
EP0780160B1 (fr) Dispositif de revêtement de poudre par pulvérisation
EP0412289B1 (fr) Dispositif de pulvérisation électrostatique
EP0823286B1 (fr) Arrangement d'injection pour transporter des matériaux en particules
DE4325044C2 (de) Pulverfördervorrichtung, insbesondere für Beschichtungspulver
DE3503384C1 (de) Spritzpistole für Beschichtungsmaterial
DE69205646T2 (de) Verfahren zur Durchflussmessung fluidisierten Pulvers und Durchflussmessvorrichtung zur Durchführung dieses Verfahrens.
EP1104334A1 (fr) Dispositif d'application de revetement en poudre
DE69429163T2 (de) Verfahren und gerät zum beschichten dreidimensionaler artikel
DE3030762A1 (de) Vorrichtung und verfahren zur elektrostatischen pulverbeschichtung
DE10203580A1 (de) Verfahren und Vorrichtung zum Aufbringen von Teilchen auf Oberflächen
DE4405640A1 (de) Pulverzuführungsvorrichtung, Vorrichtung für elektrostatische Pulverauftragung und Pulverflußratenmeßvorrichtung
EP0800440A1 (fr) Dispositif pour doser des materiaux granuleux coulants, notamment des grenailles
DE2819302C3 (de) Lackmengen-Steuersystem
DE4300832A1 (de) Pulver-Sprühbeschichtungsvorrichtung
DE19748375A1 (de) Verfahren und Vorrichtung zum Pulver-Sprühbeschichten
EP1240947A1 (fr) Dispositif de pulvérisation de poudre pour poudre de revêtement
DE19748376A1 (de) Verfahren und Vorrichtung zum Pulver-Sprühbeschichten
EP0763385A1 (fr) Procédé de transport d'un matériaux pulvérulent au moyen d'un injecteur
EP1104335A1 (fr) Dispositif d'application de revetement en poudre
EP1115499B1 (fr) Dispositif d'application de revetement en poudre
EP1346775B1 (fr) Pulvérisateur pour une installation de peinture
DE10003077C2 (de) Einrichtung und Verfahren zum elektrostatischen Pulverbeschichten von Werkstücken mit unterschiedlichen Pulvern
DE2753268A1 (de) Anordnung an spritzeinrichtungen fuer rieselfaehiges spritzgut
DE10325386B4 (de) Vorrichtung zum Aufbringen von Puder auf bewegte Druckbogen
EP1477231A2 (fr) Dispositif pour la préservation des espaces creux

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960926

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE LI

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ITW GEMA AG

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990210

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE LI

REF Corresponds to:

Ref document number: 187903

Country of ref document: AT

Date of ref document: 20000115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

REF Corresponds to:

Ref document number: 59603977

Country of ref document: DE

Date of ref document: 20000127

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010831

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010903

Year of fee payment: 6

Ref country code: AT

Payment date: 20010903

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020926

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030401

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL