WO1996007489A1 - Dispositif mobile de durcissement de peinture par infra-rouges - Google Patents

Dispositif mobile de durcissement de peinture par infra-rouges Download PDF

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Publication number
WO1996007489A1
WO1996007489A1 PCT/SE1995/001008 SE9501008W WO9607489A1 WO 1996007489 A1 WO1996007489 A1 WO 1996007489A1 SE 9501008 W SE9501008 W SE 9501008W WO 9607489 A1 WO9607489 A1 WO 9607489A1
Authority
WO
WIPO (PCT)
Prior art keywords
curing
air
head
cured
panels
Prior art date
Application number
PCT/SE1995/001008
Other languages
English (en)
Inventor
Ragnar Segersten
Sten Drennow
Peter Beijbom
Original Assignee
Drester Ab
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 Drester Ab filed Critical Drester Ab
Publication of WO1996007489A1 publication Critical patent/WO1996007489A1/fr

Links

Classifications

    • 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
    • B05D3/0263—After-treatment with IR heaters

Definitions

  • the present invention relates to a method of impro- ving the function of a mobile infra-red paint curing de ⁇ vice, preferably for car repair shops, including a curing head with an array of IR panels for curing by means of IR beams.
  • the invention also relates to such a curing device for carrying out this method.
  • Mobile infra-red paint curing devices are used in car repair shops for curing paint applied after repair of cer ⁇ tain damaged parts of cars.
  • the curing heads are movable so as to enable them to be brought into position for curing any part of a car.
  • the IR panels are working in the medium- wave range, because such panels have a comparatively long pre-heating time and provide for an even absorption of the heat in the paint, but also panels working in the short ⁇ wave range may be used. Such panels, however, have a very short pre-heating time and may accordingly be dangerous for operators .
  • the problems with conventional curing devices of the kind referred to are that the heat on the object to be cured may be unevenly distributed, that the curing time may be longer than desired, especially if IR panels working in the medium-wave range are used, and also that the cooling after the curing may take a long time. Also, it may be difficult to have satisfactory control over the different parameters.
  • This control system which is arranged on the device, can be programmed or adjusted according to different condi ⁇ tions and desires with respect to the sequence for the IR heating and the air blowing as well as the curing time and the time for the air blowing.
  • the air which will be heated by the IR beams, has a positive effect on the heat distribution.
  • the air will also carry the paint solvent away from the curing area. After the curing the air will cool the object to be cured.
  • the effect of the air is best at paints with water as solvent, but the method can be used at all types of paints. It may be advantageous if the air is turbulent, which may be ob ⁇ tained by the shape of the holes or nozzles by which the air is supplied. As stated, the air is blown from an end portion of the curing head obliquely inwards towards the center of the head. If the air hereby is blown from the lowermost end of the curing head and obliquely upwards, the air will assist in carrying solvent away upwards.
  • a problem with a conven ⁇ tional curing head is an uneven distribution of the heat on the object to be cured.
  • a further improvement in this re ⁇ spect may according to the invention be obtained in that IR beams with different effects are directed towards different parts of the object to be cured.
  • a device for carrying out the method according to the invention is characterized in that a part of the head is provided with holes or nozzles for blowing air obliquely inwards towards the object to be cured and in that the device has a common control system for the IR panels and for the supply of air.
  • the air is supplied through a hose to a tube of the curing head from a source of compressed air.
  • An even heat distribution may be obtained in that IR panels with different ratings are arranged in a certain array in the curing head.
  • the curing head may be provided with an appliance for optical indication of the distance.
  • Fig 1 is a side view of a mobile infra-red paint curing device according to the invention.
  • Fig 2 is a bottom view of a curing head for the device according to Fig 1
  • Figs 3 and 4 are schematic views of different arrays of IR panels for a curing head
  • Fig 5 is a schematic side view of an appliance for optical indication of the distance to an object to be cured
  • Fig 6 is an illustration of the appearance of light beams from the appliance according to Fig 5.
  • Fig 1 It consists in essence of a base 1 with wheels 2, a lower arm 3 pivotally attached to the base 1, an upper arm 4 pivotally attached to the lower arm 3, and a curing head 5, which is attached to the upper arm 4 in such a way that it is movable in all directions, as appears by the three arrows in Fig 1.
  • a gas spring 6 may be arranged as shown between the two arms 3 and 4 so as to enable the upper arm
  • the articulation means between the upper arm 4 and the curing head 5 are such that any set position for the head 5 will be maintained.
  • the curing head 5 consists in essence of a frame 7 preferably composed of tubes, and a number of electrical, infra-red panels 8, which are pivotably attached for indi ⁇ vidual movements in the frame 7. When switched on, the panels 8 will supply IR beams.
  • the purpose of the device is to cure wet paint on a newly painted car, which has been re ⁇ paired in a car repair shop.
  • the device is moved to the vi ⁇ cinity of the car, and at least one of the wheels 2 are locked.
  • By pivoting the arm 4 and adjusting the head 5 to a desired position any point on the car can be exposed to the IR beams from the curing head 5.
  • the device as described so far is in principal con ⁇ ventional, although its construction has certain advantages over conventional mobile infra-red paint curing devices.
  • One of the inventive features is that the curing head
  • a part of the head 5 is provided with holes 9 or nozzles for the air.
  • these holes 9 or nozzles are arranged in or on a longitudinal end tube of the frame 7.
  • the air is supplied to this tube through a hose 10, which extends through the upper arm 4 and the lower arm 3, from a compressed air system in the repair shop through an inlet 11 at the lower part of the lower arm 3.
  • the holes 9 or nozzles are arranged in such positions that the air is blown obliquely inwards towards the center of the head 5, as shown in Fig 1.
  • the tube containing the holes 9 or nozzles is to be in the lowermost part of the head 5, so that the air is directed upwards towards the surface of the car.
  • the effect of this is that the air is lifted upwards by the heat from the IR panels 8 and brings paint solvent, preferrably water, with it.
  • the air will also effect a more uniform distribution of the heat on the surface of the car. Further, when the IR panels 8 have been switched off, the air can effect a faster cooling down of the surface on the car.
  • the even heat dis ⁇ tribution on the object to be cured is obtained in that IR panels 8 with different ratings are arranged in a certain array in the curing head 5. Two examples of such arrange- ments are shown in Figs 3 och 4.
  • Fig 3 there are in total nine IR panels 8. Only the four panels in the corner positions are panels with a higher rating or full rating, for example 1500 W or 500 W, whereas the five others, arranged in a cross, are at a lower rating of for example 1000 W or 375 W, respectively.
  • Fig 4 there are altogether eight panels 8, where there are two rows with three full rating panels at each side and two low rating panels between them and with no panel at all in the center.
  • the device may be equipped with an appliance for optical indication of the distance to the object to be cured.
  • an appliance for optical indication of the distance to the object to be cured.
  • Such an appliance is shown in Fig 5.
  • Two light guides 12 are arranged in a block 13. The inner ends of these light guides 12 are placed in the vicinity of a bulb 14 and the opposite ends of the light guides 12 are directed towards a point at the desired distance, for exam ⁇ ple 50 cm, from the block 13, which is to be attached to the curing head 5.
  • the light guides 12 will produce two dots or marks on an object, and if the two marks are too far apart, the distance has to be decreased, until the two dots coincide.
  • Alternative designs of such an appliance are possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

Procédé d'amélioration du fonctionnement d'un dispositif mobile de durcissement de peinture par infra-rouges (1-5), de préférence dans un atelier de réparation d'automobiles. Le dispositif comporte une tête de chauffage (5) comprenant une série de panneaux à infra-rouges (8) réalisant le durcissement grâce à des faisceaux à infra-rouges. De l'air est projeté par la tête de chauffage, sous un angle oblique et vers l'intérieur en direction de l'objet à chauffer, l'apport de faisceaux à infra-rouges et d'air sur l'objet étant commandé par un système de commande commun.
PCT/SE1995/001008 1994-09-09 1995-09-08 Dispositif mobile de durcissement de peinture par infra-rouges WO1996007489A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9403008A SE503423C2 (sv) 1994-09-09 1994-09-09 Mobil, infraröd färghärdningsanordning
SE9403008-7 1994-09-09

Publications (1)

Publication Number Publication Date
WO1996007489A1 true WO1996007489A1 (fr) 1996-03-14

Family

ID=20395177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/001008 WO1996007489A1 (fr) 1994-09-09 1995-09-08 Dispositif mobile de durcissement de peinture par infra-rouges

Country Status (2)

Country Link
SE (1) SE503423C2 (fr)
WO (1) WO1996007489A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346572A (en) * 1999-01-27 2000-08-16 Gordon Laurence Banner Powder coating of large structures
ES2190686A1 (es) * 2000-02-02 2003-08-01 Pete 2000 S L Metodo perfeccionado de reparacion rapida de desperfectos en la pintura de superficies.
US6731866B2 (en) * 2000-06-06 2004-05-04 Tateo Uegaki Repair device for vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001186A1 (fr) * 1985-08-15 1987-02-26 Tri Innovations Ab Four pour traitement thermique
WO1995015471A1 (fr) * 1993-12-01 1995-06-08 Hoffman, Andreas, Peter Procede et systeme de sechage de couches de laque et de fond

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001186A1 (fr) * 1985-08-15 1987-02-26 Tri Innovations Ab Four pour traitement thermique
WO1995015471A1 (fr) * 1993-12-01 1995-06-08 Hoffman, Andreas, Peter Procede et systeme de sechage de couches de laque et de fond

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346572A (en) * 1999-01-27 2000-08-16 Gordon Laurence Banner Powder coating of large structures
GB2346572B (en) * 1999-01-27 2003-08-20 Gordon Laurence Banner Powder coating process for structures
ES2190686A1 (es) * 2000-02-02 2003-08-01 Pete 2000 S L Metodo perfeccionado de reparacion rapida de desperfectos en la pintura de superficies.
US6731866B2 (en) * 2000-06-06 2004-05-04 Tateo Uegaki Repair device for vehicle

Also Published As

Publication number Publication date
SE9403008L (sv) 1996-03-10
SE9403008D0 (sv) 1994-09-09
SE503423C2 (sv) 1996-06-10

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