EP1651359A2 - Dispositif pour faire durcir un revetement, constitue d'un materiau durcissant par rayonnement electromagnetique, notamment d'une peinture uv ou d'une peinture a durcissement thermique, d'un objet - Google Patents

Dispositif pour faire durcir un revetement, constitue d'un materiau durcissant par rayonnement electromagnetique, notamment d'une peinture uv ou d'une peinture a durcissement thermique, d'un objet

Info

Publication number
EP1651359A2
EP1651359A2 EP04740906A EP04740906A EP1651359A2 EP 1651359 A2 EP1651359 A2 EP 1651359A2 EP 04740906 A EP04740906 A EP 04740906A EP 04740906 A EP04740906 A EP 04740906A EP 1651359 A2 EP1651359 A2 EP 1651359A2
Authority
EP
European Patent Office
Prior art keywords
container
radiator
radiators
electromagnetic radiation
oxygen
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Withdrawn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
EP04740906A
Other languages
German (de)
English (en)
Inventor
Werner Swoboda
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.)
Eisenmann Anlagenbau GmbH and Co KG
Original Assignee
Eisenmann Anlagenbau GmbH and Co KG
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
Priority claimed from DE102004023538A external-priority patent/DE102004023538B4/de
Application filed by Eisenmann Anlagenbau GmbH and Co KG filed Critical Eisenmann Anlagenbau GmbH and Co KG
Publication of EP1651359A2 publication Critical patent/EP1651359A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0436—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath
    • B65G49/044—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit
    • B65G49/045—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit the circuit being fixed
    • B65G49/0454—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit the circuit being fixed by means of containers -or workpieces- carriers
    • B65G49/0459—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit the circuit being fixed by means of containers -or workpieces- carriers movement in a vertical direction is caused by self-contained 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
    • 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
    • B05D3/06—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 exposure to radiation
    • B05D3/061—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 exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • B62D65/18—Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/02—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle
    • F26B15/08—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle in a vertical plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
    • 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
    • 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
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0294—Vehicle bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • the invention relates to a device for curing a coating of an object, in particular a vehicle body, consisting of a material that cures under electromagnetic radiation, in particular UV coating or thermosetting coating
  • Varnishes that cure under UV light have hitherto been used mainly for painting sensitive objects, for example wood or plastic.
  • these varnishes can be polymerized at very low temperatures. This prevents the material of the objects from decomposing or outgassing.
  • the curing of coating materials under UV light has further advantages, which now makes this coating process interesting for use in other areas. This is particularly the short curing time, which is particularly the case with such coating processes, which are carried out continuously work, directly results in a reduction in the length of the system. This is associated with enormous cost savings. Due to the smaller dimensions, the device with which the gases located in the interior of the device are conditioned can also be downsized, which also contributes to cost savings. Finally, the low operating temperature is also advantageous in the case of objects which, in and of themselves, could tolerate higher curing temperatures, in order to save energy, in particular thermal energy.
  • lacquers have recently been developed which cure when exposed to heat in an inert gas atmosphere with the formation of very hard surfaces.
  • the heat can be supplied in different ways, for example by convection or by infrared emitters. In the latter case, there are similar problems as described above for the use of UV lamps. In particular, all surface areas of the object to be painted should therefore be guided past the infrared radiator at approximately the same distance.
  • the object of the present invention is to design a device of the type mentioned at the outset so that even coatings on complicatedly shaped, highly uneven objects, in particular vehicle bodies, can be cured with good results.
  • the conveyor system comprises:
  • At least one transport carriage which can be moved in translation on at least one running surface and has: ca) a drive motor for the translation movement; cb) a mounting frame to which the object can be fastened and which can be rotated or pivoted independently of the translation movement about a rotation or swiveling axis running transversely to the direction of the translation movement.
  • conveyor systems are used which in and of themselves have hitherto been used for the dip coating of vehicle bodies or other objects.
  • these conveyor systems are also suitable for moving objects of complex shape in the radiation region of emitters in such a way that superimposed swings or rotations and translations are such that all Surface areas of the object are exposed to an amount of radiation and a radiation intensity that is sufficient to cure the material.
  • Complete hardening occurs only when the electromagnetic radiation hits the coating with an intensity above a threshold value on the one hand and on the other hand this intensity is maintained over a certain period of time. If the intensity is too low, a polymerization reaction does not start or takes place slowly; if the radiation is too short, incomplete curing will be achieved.
  • the required amount of radiation is also called “irradiation” in photometry 2 and is given in the unit J / cm.
  • the required 2 irradiation in the case of UV light is a few J / cm.
  • a slight "overexposure" of the coating beyond the required radiation is generally not harmful.
  • the movement of the objects should be such that the amount of integrated radiation striking the coating per unit area is approximately constant everywhere on the surface of the object. This constant value should, if possible, only be slightly above the value required for curing, since strong overexposures can lead to embrittlement or discoloration of the lacquer.
  • the device has a container which is open to the transport plane of the conveyor system, in the interior of which the object can be inserted by rotating or pivoting the mounting frame and in the interior of which at least one radiator can be exposed to electromagnetic radiation.
  • This container ensures that no radiation and no gases can escape in the lateral direction, which is to be avoided for the operator for health reasons.
  • the trolleys unfold, which are used to immerse and immerse
  • the arrangement of the emitters on or in the container can be different:
  • At least one radiator is built into a wall or the bottom of the container.
  • that solution is preferred in which at least one in the opposite side walls running parallel to the translation movement of the objects and in at least one of the two end walls running perpendicular to the translation movement of the objects or in the bottom of the container Spotlight is building. Then all sides or surface areas of the object can be easily reached by the electromagnetic radiation.
  • the radiators in which the radiators are arranged in the walls or in the bottom of the container, the radiators essentially form surface radiators.
  • radiators which are designed as linear radiators.
  • an embodiment of the invention is possible in which a plurality of radiators are provided in a U-shaped arrangement with two essentially vertical legs and a substantially horizontal base. The object to be treated is "threaded" through the interior formed by the U-shaped arrangement.
  • the approximately vertical legs of the U-shaped arrangement of emitters can be adapted to the course of the side contour of the object, so that even with a curved side contour of these objects, the desired vertical incidence of the electromagnetic radiation on the surface areas and the constant distance between the surface area and the emitter can be met.
  • the protective gas can be heavier than air, especially carbon dioxide.
  • the container is open at the top.
  • the container is filled with the heavy shielding gas similar to a liquid.
  • the protective gas is lighter than air, especially helium.
  • the container is designed as a hood open at the bottom, in which the protective gas collects.
  • the "bottom" becomes the ceiling of the container.
  • the coated objects can be easily introduced and removed into the protective gas atmosphere within the container with the aid of the transport trolleys used according to the invention.
  • a movable reflector is assigned to at least one of the emitters on the side facing away from the object, an additional adaptation of the radiation direction to the course of the surface of the object to be treated is possible.
  • the inside of the container can be provided with a reflective layer. This allows spotlights with lower power to be used.
  • a lock for the trolley can be provided at the inlet and at the outlet to the cabin housing. These locks prevent larger amounts of air from the outside atmosphere from entering the cabin housing when the trolley is being moved in and out, and also protect the personnel from electromagnetic radiation.
  • a device for removing the oxygen from the atmosphere located within the cabin housing is expediently provided.
  • This device can comprise a catalyst for the catalytic binding of oxygen, a filter for absorption or else a filter for adsorption of oxygen.
  • the device for gelling this powdery material can have a corresponding preheating zone.
  • a measuring station can be arranged upstream of the at least one radiator in the conveying direction, by means of which spatial shape data of the object can be recorded. This data can then be used to guide the movement of the object in front of the radiator or radiators.
  • the measuring station can comprise at least one optical scanner, through which the object can be scanned in at least one direction.
  • the optical scanner can have an infrared light source.
  • the measuring station can also include a video camera and a device for digital image recognition.
  • the data obtained from the measuring station can be stored in a control device which reads this data out again during the subsequent movement of the object past the at least one emitter and uses it to control the movement of the object.
  • the object can be measured here at any location upstream of the irradiation location and at any time preceding the irradiation time.
  • This measuring station can be a light barrier, for example contain.
  • a measurement of the object can also be dispensed with if a control device is provided in which the spatial data belonging to a specific type of the object can be stored and, if necessary, can be read from it.
  • the electromagnetic radiation is preferably UV light or infrared radiation.
  • Figure 1 is a perspective and partially broken open a device for curing a UV varnish on vehicle bodies
  • Figure 2 is a view similar to Figure 1, but with the side wall of a container and a cabin housing of the device removed;
  • FIG. 3 shows a section through the device of FIGS. 1 and 2 parallel to the direction of translation of the vehicle bodies
  • Figure 4 is a plan view of the container and the conveyor system of the device of Figures 1 to 3;
  • Figure 5 shows a section through the device of Figures 1 to 4 perpendicular to the translation direction of the vehicle bodies;
  • Figure 6 is a perspective view, similar to Figure 1, of a second embodiment of a device for curing a UN paint on vehicle bodies;
  • Figure 7 is a perspective view of the second embodiment, similar to Figure 2;
  • FIG. 8 shows a section through the device of FIGS. 6 and 7 parallel to the direction of translation of the vehicle bodies
  • Figure 9 is a plan view of the container and conveyor system of the device of Figures 6 to 8;
  • Figure 10 shows a section through the device of Figures 6 to 9 perpendicular to the conveying direction of the vehicle bodies
  • Figure 11 schematically shows an overall view of the device of Figures 1 to 5 with various peripheral devices.
  • FIGS. 1 to 5 show the core area of a first exemplary embodiment of a device which is used to cure a UN paint on vehicle bodies that was applied in a previous coating station with UV light.
  • the device comprises a container 2 which is open at the top and which is similar to a paint tank known from the dip painting of vehicle body series.
  • a conveyor system 3 which will be described in more detail below, extends over the container 2 and is capable of "immersing” and moving the vehicle bodies 4 it transports into the container 2 in a manner which is also below is described in more detail.
  • the essentially cuboid-shaped container 2 contains a large number in its bottom surface 5 as well as in the side walls 8 and 9 running parallel to the conveying direction of the conveyor system 3, which is indicated by the arrow 7, and in the end walls 10 and 11 running perpendicular thereto of UN emitters 12.
  • Gaseous carbon dioxide is supplied to each UN radiator 12 via a line 14, of which only one is shown in the figures to relieve it. This carbon dioxide flows around the parts of the UN radiator 12 that become hot during operation and then emerges from the inside of the base 5 and the walls 8, 9, 10, 11 of the container 2. The gaseous carbon dioxide, which is heavier than air, fills the interior of the container 2 from bottom to top in this way. The amount of the gaseous carbon dioxide supplied via the lines 14 is in dynamic equilibrium with the amount of carbon dioxide that escapes at the open top of the container 2 and is then discharged from the device 1 in a manner explained below.
  • the conveyor system 3 is constructed similarly to that which is described in the above-mentioned DE 201 05 676 Ul, to which reference is also made.
  • the Drive motor can be rotated independently of the translational movement of the transport carriage 18.
  • the first ends of two swivel arms 24 are rigidly fastened to the swivel shaft 23, each in the vicinity of a longitudinal cross member 19, 20, somewhat parallel to the latter offset inside, run.
  • two struts 25 are articulated on a mounting frame, identified overall by reference numeral 26, to which the vehicle body 4 is then attached, optionally together with a skid carrying the vehicle body 4.
  • the hinge axes, via which the pivot arms 24 are connected to the struts 25 of the support frame 26 are driven by a motor in a manner not recognizable in the drawing, so that the angle between the pivot arms 24 and the struts 25 of the support frame 26 is independent of the pivoting of the Swivel arms 24 can be changed around the swivel shaft 23 and independently of the translational movement of the transport carriage 18 in the conveying direction 7.
  • the top of the container 2 is covered by a cabin housing 27 which has glass side walls 28 and a roof structure 29.
  • the glass from which the side walls 28 are formed is, of course, impervious to UN light.
  • the roof structure 29 is provided with various cavities 30 running parallel to the conveying direction 7, via which conditioned gas can be supplied to the interior of the cabin housing 27 and gas from the interior of the cabin housing 27 including the carbon dioxide escaping from the container 2 and possibly ozone are removed in a controlled manner can be.
  • the bottom 5 and the walls 8, 9, 10, 11 of the container 2 are covered by a reflective aluminum foil where they are not occupied by the exit surfaces of the UN radiators 12, which additionally, for example was made uneven by wrinkling or by other irregular surveys.
  • the device 1 described above operates as follows:
  • the UN emitters 12 are in operation, so that the entire interior of the container 2 is filled with UN light, which, due to the crumpled aluminum foil attached to the inner surfaces of the container walls 8 to 11 and of the container base 5, additionally into a wide variety of different Directions reflected and in this way is evened out.
  • the UN radiators 12 are cooled by the gaseous carbon dioxide supplied via the lines 14. The carbon dioxide gas which is only slightly preheated in this way enters the container 2 in the manner already described above and fills it up from the bottom.
  • the carbon dioxide escaping from the top of the container 2 which can be mixed to a slight extent with outgassing from the paint hardening on the vehicle body 4 and ozone, reaches the interior of the cabin 27 and is from there via one of the cavities 30 in suctioned off the roof structure 29. Suction can also be carried out directly on the upper edge of the walls 8 to 11 of the container 2.
  • the vehicle body 4 clearly has curved surfaces in all three spatial directions. In order to ensure that all surface areas are hit by approximately the same UN radiation when passing through the device, the vehicle body 4 is covered with the aid of the
  • Swivel arms 24 and the support frame 26 are pivoted accordingly. This can take place with the translational movement of the transport carriage 18 at a standstill or also during a translational movement both in the direction of the arrow 7 and counter to it.
  • FIGS. 6 to 10 show a second exemplary embodiment of a device 101 with which the UN lacquer applied to a vehicle body 104 can be cured under the action of UV light.
  • This device 101 is very similar to device 1 of FIGS. 1 to 5; corresponding parts are therefore marked with the same reference symbols plus 100.
  • the device 101 contains a container 102 which is open at the top, a conveyor system 103 with a plurality of transport carriages 118 and a cabin housing 127 which covers the container 102.
  • a container 102 which is open at the top
  • a conveyor system 103 with a plurality of transport carriages 118
  • a cabin housing 127 which covers the container 102.
  • the conditions in the two exemplary embodiments of device 1 or 101 are identical.
  • the vehicle body series 104 coated with UN lacquer are moved over the container 102 from the bottom left using the transport vehicles 118 in FIG. 6 and are then introduced into the container 2 in the vicinity of the front end wall 110 in the conveying direction 107 on a correspondingly adapted movement curve ,
  • the transport carriage 18 then moves in the direction of the arrows 107, the vehicle body 104 being guided between the two vertical legs of the U-shaped arrangement of UV radiators 112 and over the base of this U.
  • FIG. 11 schematically shows the device 1 described above with reference to FIGS. 1 to 5 in its entirety with various peripheral devices 40, 50, 60, 70, 80 and 90.
  • the conveyor system 3 can also be seen with the individual transport wagons 18 on which the vehicle bodies 4 are moved in a translatory manner in the direction of the arrows 7. This movement can be discontinuous, although backward movements are not excluded.
  • the transport carts 18 first pass through a preheating station 40 which is heated by hot air in the exemplary embodiment shown. Alternatively, heating by IR emitters or microwaves can be considered.
  • the preheating station 40 can perform different functions depending on the type of coating material: If this material is solvent-based substances, for example water-based paint, the solvents are largely removed here. If it is powder material, the preheating station 40 serves to gel the powder and in this way to prepare it for the polymerization reaction.
  • the transport carts 18 with the vehicle bodies 4 then arrive at an inlet lock 50, which is connected upstream of the device part described above, in which the irradiation with UN light takes place.
  • the inlet lock 50 is a double lock with two movable gates 51 and 52.
  • the vehicle bodies 4 are first moved into the lock 50 with the gate 51 open and gate 52 closed.
  • Inside the lock 50 there is an optical scanning device 55, with which the contour of the vehicle body 4 is scanned.
  • the spatial shape data obtained in this way become one
  • Control 56 fed and initially stored there.
  • the gate 51 is then closed, the gate 52 is opened and the vehicle body 4 is further introduced into the interior of the cabin housing 27.
  • the vehicle Body 4 as described above, with pivoting the arms 24 and the support frame 26 introduced into the container 2, which is filled with carbon dioxide gas from a carbon dioxide supply source 60.
  • the vehicle body 4 moves in the container 2 past a multiplicity of UV emitters 12, only one of which is shown in FIG. 11. The movement is guided by the control mentioned above based on the data obtained by the scanning device 55.
  • the movement of the vehicle body 4 in the container 2 can also be carried out according to body data which are stored in the controller 56. All that is then required is a reading device that recognizes the type of vehicle body 4 that is just entering container 2 and retrieves the spatial shape data assigned to it.
  • the scanning device 55 can also be used as a control.
  • the vehicle body 4 leaves the container 2 again by pivoting the arms 24 and the support frame 26 and then arrives at a first movable gate 71 of an outlet lock 70, the second movable gate 72 of which is closed at this time.
  • a first movable gate 71 of an outlet lock 70 the second movable gate 72 of which is closed at this time.
  • the transport vehicle 18 moves with the vehicle body 4 into the interior of the outlet lock 70.
  • the inner movable gate 71 is closed and the outer movable gate 72 is opened.
  • the vehicle body 4 emerging from the outlet lock 70 arrives in a reheating zone 80, in which the coating of the vehicle body 4 is kept at an elevated temperature for a certain time and is thereby stabilized.
  • the trolley then leaves 18th with the vehicle body 4, the device 1.
  • the vehicle bodies 4 are removed from the transport vehicle 18 and used for further use, while the transport vehicle 18 is returned in a way not shown to the point where it is again with freshly coated vehicle bodies 4 loaded and in turn into the device 1 shown in FIG. 11, coming from the left.
  • the locks 50 and 70 serve to prevent the penetration of air as far as possible into the interior of the cabin housing 27, since the oxygen contained in the air is caused by the UN radiation which is in the interior of the cabin housing 27 is present, would be converted to harmful ozone.
  • the entry of air and thus of oxygen through the locks 50 and 70 cannot be completely prevented.
  • 'a device 90 is provided which serves to remove incorporated of oxygen.
  • gas is continuously withdrawn from the interior of the cabin housing 27 via a line 91 and, for example, passed over a catalyst guided in the device 90, which catalytically removes the oxygen. Part of this gas is returned to the interior of the cabin housing 27 via line 92, while another part is released into the outside atmosphere via line 93.
  • device 90 may include an oxygen adsorbing or oxygen absorbing filter.
  • the measuring station for determining the spatial data comprises in an embodiment not shown in the drawing. example a video camera with a digital image recognition device.
  • emitters can be composed of a large number of individual linear or approximately point-shaped light sources.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un dispositif (1) servant à faire durcir un revêtement d'un objet (4), notamment d'une carrosserie de véhicule, ce revêtement étant constitué d'un matériau durcissant par rayonnement électromagnétique, notamment d'une peinture UV ou d'une peinture à durcissement thermique. Le dispositif selon l'invention comprend au moins un émetteur de rayonnement (12) générant un rayonnement électromagnétique. Un système de transport (3) qui amène l'objet (4) à proximité de l'émetteur de rayonnement (12) puis l'éloigne de ce dernier, comprend au moins un chariot de transport (18) déplaçable en translation sur au moins une surface de roulement (15, 16) et présentant un moteur d'entraînement (22) pour ce mouvement de translation. Un bâti de maintien (26) pour l'objet (4) est fixé sur le chariot de transport (18) et peut tourner ou pivoter, indépendamment du mouvement de translation, autour d'un axe de rotation ou de pivotement perpendiculaire au sens du mouvement de translation. Il est ainsi possible de faire passer même des objets (4) à forme superficielle complexe, des carrosseries de véhicules notamment, au niveau de l'émetteur de rayonnement (12) de telle façon que toutes les zones de surface peuvent recevoir, au moins approximativement, la même quantité de rayonnement.
EP04740906A 2003-07-24 2004-07-10 Dispositif pour faire durcir un revetement, constitue d'un materiau durcissant par rayonnement electromagnetique, notamment d'une peinture uv ou d'une peinture a durcissement thermique, d'un objet Withdrawn EP1651359A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10335004 2003-07-24
DE102004023538A DE102004023538B4 (de) 2003-07-24 2004-05-13 Vorrichtung zur Aushärtung einer aus einem Material, das unter elektromagnetischer Strahlung aushärtet, insbesondere aus einem UV-Lack oder thermisch aushärtendem Lack bestehenden Beschichtung eines Gegenstandes
PCT/EP2004/007643 WO2005014182A2 (fr) 2003-07-24 2004-07-10 Dispositif pour faire durcir un revetement, constitue d'un materiau durcissant par rayonnement electromagnetique, notamment d'une peinture uv ou d'une peinture a durcissement thermique, d'un objet

Publications (1)

Publication Number Publication Date
EP1651359A2 true EP1651359A2 (fr) 2006-05-03

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EP04740906A Withdrawn EP1651359A2 (fr) 2003-07-24 2004-07-10 Dispositif pour faire durcir un revetement, constitue d'un materiau durcissant par rayonnement electromagnetique, notamment d'une peinture uv ou d'une peinture a durcissement thermique, d'un objet

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US (2) US20070062060A1 (fr)
EP (1) EP1651359A2 (fr)
CA (1) CA2533524A1 (fr)
WO (1) WO2005014182A2 (fr)

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Publication number Publication date
WO2005014182A3 (fr) 2005-05-12
CA2533524A1 (fr) 2005-02-17
US20110131828A1 (en) 2011-06-09
US20070062060A1 (en) 2007-03-22
WO2005014182A2 (fr) 2005-02-17

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