EP0152375A2 - Tête de pulvérisation pour appareil de revêtement à poudre - Google Patents

Tête de pulvérisation pour appareil de revêtement à poudre Download PDF

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Publication number
EP0152375A2
EP0152375A2 EP85810036A EP85810036A EP0152375A2 EP 0152375 A2 EP0152375 A2 EP 0152375A2 EP 85810036 A EP85810036 A EP 85810036A EP 85810036 A EP85810036 A EP 85810036A EP 0152375 A2 EP0152375 A2 EP 0152375A2
Authority
EP
European Patent Office
Prior art keywords
cross
spray head
powder
head according
sectional widening
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.)
Granted
Application number
EP85810036A
Other languages
German (de)
English (en)
Other versions
EP0152375A3 (en
EP0152375B1 (fr
Inventor
Siegfried Frei
Ernst Hohl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT85810036T priority Critical patent/ATE28411T1/de
Publication of EP0152375A2 publication Critical patent/EP0152375A2/fr
Publication of EP0152375A3 publication Critical patent/EP0152375A3/de
Application granted granted Critical
Publication of EP0152375B1 publication Critical patent/EP0152375B1/fr
Expired 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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/326—Gate valves; Sliding valves; Cocks
    • 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
    • B05B14/10—Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
    • 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
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/12—Plant for applying liquids or other fluent materials to objects specially adapted for coating the interior of hollow bodies

Definitions

  • the present invention relates to a spray head according to the preamble of claim 1.
  • the coating of the welded longitudinal seams of can bodies with electrostatically charged powder is known and is predominantly used on can bodies in which sensitive filling goods are filled.
  • Polymer resins e.g. Epoxy, polyethylene, etc. are used, which are conveyed to the weld seam in the finest resolution in an air stream and electrostatically charged shortly before hitting the seam.
  • the objects of the invention are now to give the powder stream a favorable cross-sectional shape and adjustable direction which is adapted to the requirements, and to expel it from the mouth with as little transport air as possible.
  • both the trajectory and the distribution of the powder particles in the trajectory or the requirements of the weld seam to be painted can be influenced accordingly.
  • the powder By expanding the cross-section of the powder line in front of the orifice, the powder can be partially separated from the transport air before it enters the spray chamber.
  • the connection of the cross-sectional expansion to a space in which the pressure is lower than in the cross-sectional expansion enables the drain of the separated air and an expansion of the 2 n powder particles crowded together in the powder line.
  • a connection to a suction line enables an almost complete separation of powder and transport air before exiting into the spray room.
  • An essentially cylindrical spray head 1 is attached to the mandrel 2 of a known but not shown machine for producing the weld seam on can bodies 17.
  • a slot-shaped spray chamber 3 with a powder line 4 which opens into the bottom thereof and has one or more suction lines 5 and a high-voltage electrode 6.
  • a diaphragm 8 with a bore 9 is slidably fitted over the outlet opening 7 of the powder line 4.
  • a slot-shaped recess 10 in the panel 8 is one Eccentric disc 11 rotatably mounted in the spray head 1, with which the diaphragm 8 can be aligned in a longitudinally displaceable manner via the outlet opening 7 in the spray chamber 3.
  • a cross-sectional widening 12 is provided in the area of approximately 5-10 mm below the screen 8
  • the cross-section of the extension 12 is approximately 1.5 to 3 times, the powder conduit is preferably 2 times the cross section 4.
  • a connecting passage leads either into the spraying 3 or directly into the suction line 5.
  • the connecting channel can be designed as a bore 14 (shown in broken lines) or as a groove 15 on the underside of the panel 8.
  • the cross section of the connecting channel is generally less than 25% of the cross section of the powder line 4.
  • the weld seam 18 of the can body 17 located in the upper apex is located above the spray chamber 3.
  • the bore 9 in the diaphragm 8 can have a circular or a slot-shaped cross section (slot-shaped design not shown).
  • the spray chamber 3 directed upwards in FIGS. 1 and 3 can also be directed downwards if the weld seams of the can bodies 17 guided past the spray chamber 3 are at the bottom. None changes in the way it works.

Landscapes

  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP85810036A 1984-02-10 1985-02-04 Tête de pulvérisation pour appareil de revêtement à poudre Expired EP0152375B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810036T ATE28411T1 (de) 1984-02-10 1985-02-04 Spruehkopf einer pulverauftragsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH641/84 1984-02-10
CH641/84A CH648496A5 (de) 1984-02-10 1984-02-10 Spruehkopf einer pulverauftragsvorrichtung.

Publications (3)

Publication Number Publication Date
EP0152375A2 true EP0152375A2 (fr) 1985-08-21
EP0152375A3 EP0152375A3 (en) 1986-06-11
EP0152375B1 EP0152375B1 (fr) 1987-07-22

Family

ID=4191745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810036A Expired EP0152375B1 (fr) 1984-02-10 1985-02-04 Tête de pulvérisation pour appareil de revêtement à poudre

Country Status (4)

Country Link
EP (1) EP0152375B1 (fr)
AT (1) ATE28411T1 (fr)
CH (1) CH648496A5 (fr)
DE (1) DE3560349D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749593A (en) * 1985-02-21 1988-06-07 Prazisions-Werkzeuge Ag Coating arrangement and process for preventing deposits of a coating material
DE102023003358A1 (de) 2023-08-12 2025-02-13 Mercedes-Benz Group AG Vorrichtung zum Besprühen einer Innenwandung eines Hohlraumes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT206322Z2 (it) * 1985-09-24 1987-08-10 Azzimonti Giovanni Mec Srl Dispositivo di regolazione della mandata d'aria in una pistola a spruzzo.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH125657A (de) * 1927-03-28 1928-05-01 Badische Maschf Gmbh Pressluftschleudervorrichtung für Beton, Mörtel, Sand und ähnliche Stoffe.
GB951589A (en) * 1959-12-01 1964-03-04 Pyrene Co Ltd Improvements relating to spraying devices
EP0093083B2 (fr) * 1982-04-27 1993-11-24 Siegfried Frei Procédé pour appliquer une couche en poudre et appareil pour l'application de poudre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749593A (en) * 1985-02-21 1988-06-07 Prazisions-Werkzeuge Ag Coating arrangement and process for preventing deposits of a coating material
DE102023003358A1 (de) 2023-08-12 2025-02-13 Mercedes-Benz Group AG Vorrichtung zum Besprühen einer Innenwandung eines Hohlraumes

Also Published As

Publication number Publication date
EP0152375A3 (en) 1986-06-11
ATE28411T1 (de) 1987-08-15
EP0152375B1 (fr) 1987-07-22
DE3560349D1 (en) 1987-08-27
CH648496A5 (de) 1985-03-29

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