EP0337091B1 - Support de buse interchangeable pour pistolets de pulvérisation de peinture à haute pression - Google Patents

Support de buse interchangeable pour pistolets de pulvérisation de peinture à haute pression Download PDF

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Publication number
EP0337091B1
EP0337091B1 EP19890103407 EP89103407A EP0337091B1 EP 0337091 B1 EP0337091 B1 EP 0337091B1 EP 19890103407 EP19890103407 EP 19890103407 EP 89103407 A EP89103407 A EP 89103407A EP 0337091 B1 EP0337091 B1 EP 0337091B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
cage
slot
exchangeable
insert
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
EP19890103407
Other languages
German (de)
English (en)
Other versions
EP0337091A3 (fr
EP0337091A2 (fr
Inventor
Gebhard Dangelmaier
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.)
J Wagner GmbH
Original Assignee
J Wagner 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 J Wagner GmbH filed Critical J Wagner GmbH
Publication of EP0337091A2 publication Critical patent/EP0337091A2/fr
Publication of EP0337091A3 publication Critical patent/EP0337091A3/fr
Application granted granted Critical
Publication of EP0337091B1 publication Critical patent/EP0337091B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices

Definitions

  • the invention relates to an interchangeable nozzle holder for high-pressure paint spray guns.
  • a known interchangeable nozzle holder EP-A-0 182 489
  • the nozzle holder and the associated insertion opening in the nozzle cage are cylindrical. It is complex to produce the required tightness at high color pressures (200 to 400 bar) between the cylindrical surfaces and to maintain it after a long period of operation. If the sealing effect deteriorates, simple readjustment is not possible.
  • the object of the invention is therefore to provide an improved nozzle change holder for high-pressure paint spray guns, which enables quick and easy replacement of the nozzles and is simple and inexpensive to produce, but nevertheless ensures the required tightness.
  • the solution to this problem results from claim 1.
  • the replacement of the nozzle can be accomplished simply by pulling out and pushing in the nozzle holder which has a handle, which is quick and can be done without tools.
  • excellent tightness is guaranteed over a long period of use because the seals used are only statically loaded and can be axially clamped. Seals that are in use for a longer period can be retightened by slight screw rotation.
  • the slot direction of slot nozzles can be easily adjusted by moving the handle of the nozzle holder.
  • the holder according to the invention can advantageously be used in all high-pressure paint spray guns, including those which work with a color pressure below 200 bar.
  • the interchangeable holder consists of a union nut 10 with a sealing ring 11, a hollow retaining screw 12 with a brake spring 13 and a sealing cup 14, a nozzle cage 15 with an axial slot 15a and a retaining spring 16, a nozzle holder 17 and a nozzle guard 18.
  • the nozzle holder 17 has an axial bore for inserting one Nozzle 19, a sealing washer 20 and a press ring 21 pressed into the axial bore as well as a laterally projecting handle 22.
  • the shape and function of these components result from the following assembly description.
  • the retaining spring 16, which has the shape of a slotted ring with bent slot ends, and the nozzle guard 18 are plugged onto the nozzle cage 15 in such a way that the axial slot of its sleeve part 18a is aligned with the axial slot 15a of the nozzle cage 15.
  • the nozzle change holder is now ready for inserting the nozzle holder 17.
  • the nozzle holder 17 can now be pushed into the nozzle cage 15 by expanding the slot end of the retaining spring 16 through the insertion slot 15a until the central axis of the nozzle 19 coincides with the central axis of the nozzle cage 15 and the handle 22 protrudes outwards from the slot 15a of the nozzle cage 15 ; the holding spring 16 which contracts again due to its own elasticity after the insertion process ensures that the nozzle holder remains in the nozzle cage and can only be pulled out of the nozzle cage 15 again using tensile force.
  • the cup seal 14 is clamped axially, to the extent that the cup seal deforms and thus a perfect seal between the retaining screw 12 and nozzle holder 17 is guaranteed, but nevertheless the pressure of the seal 14 is not yet so strong is that it is a minor Turning, for example by twenty degrees, would prevent the nozzle cage 15.
  • the nozzles for high-pressure paint spray guns are generally slot nozzles and it can now be the case with the assembly described above that the slot direction of the nozzle 19 deviates considerably from the desired spray jet level.
  • the union nut 10 is then loosened again slightly, the component protruding from the union nut is rotated in the desired direction (pre-adjustment of the nozzle slot direction) and the union nut is tightened again.
  • a fine adjustment of the nozzle slot direction can now be carried out in such a way that the handle 22 of the nozzle holder 17 is moved a little bit upwards or downwards, with the result of a rotation of the nozzle cage 15 on the thread of the retaining screw 12.
  • the rotation can be in in each direction by an amount of, for example, up to twenty degrees, without the cup seal 14 being compressed too much or being relieved in such a way that a seal would no longer be guaranteed. It is essential that with this movement of the handle 22 the nozzle guard 18 also rotates in a corresponding manner, which means that there is no need to readjust the nozzle guard 18, but rather it is always in the desired manner relative to the nozzle slot.
  • the spraying process can now be carried out, as tests have shown, even with color pressures of up to 400 bar and the required sealing is guaranteed.
  • nozzle 19 If the nozzle 19 is now to be exchanged for another nozzle, for example with a larger or smaller throughput, then it is only necessary to pull the nozzle holder 17 by its handle 22 out of the nozzle cage 15 against the force of the retaining spring 16, the nozzle 19 by a replace other nozzle and push the nozzle holder 17 back into the nozzle cage 15 in the manner described above. It is even easier if several nozzle sockets 17 are available, which are equipped with different nozzles 19; in this case, only the socket 17 located in the cage 15 is then pulled out and replaced by a socket 17 with another nozzle 19; in this case only seconds are required to change the nozzle.
  • the invention is not limited to the exemplary embodiment shown, rather numerous modifications are possible to these without leaving the scope of the invention. It is essential, however, that the seals are only subjected to static loads and can be axially clamped, because this ensures that the seals are subject to as little wear and aging as possible, and it is also possible to compensate for any aging of the seal by, for example, opening the nozzle cage a little further unscrewed the retaining screw.

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  • Nozzles (AREA)

Claims (5)

  1. Support de buse interchangeable pour pistolets de pulvérisation de peinture à haute pression comprenant un écrou à bride (10) pouvant être vissé sur l'embouchure du tube du pistolet, écrou qui maintient sur le tube du pistolet une vis de retenue creuse (12) qui prolonge le tube du pistolet, sur laquelle est vissée une cage de buse (15) comprenant une ouverture d'introduction latérale (15a) pour une monture de buse (17), la monture (17) contenant la buse (19) pouvant être introduite dans l'ouverture d'introduction (15a) et y être maintenue tout en pouvant en être retirée, caractérisé en ce que l'ouverture d'introduction est constituée par une fente d'introduction (15a) et en ce qu'il est prévu une garniture de cuvette (14) disposée sur la vis de retenue (12), qui fait saillie à travers une ouverture de la paroi de la fente d'introduction (15a) en pouvant s'appliquer contre la monture (17) de la buse, et qui peut être serrée axialement contre une surface d'étanchéité (21) de la monture (17) de la buse par vissage de la cage (15) de la buse sur la vis de retenue (12).
  2. Support de buse interchangeable selon la revendication 1, caractérisé en ce qu'un ressort de retenue (16) ayant la forme d'une bague fendue est montée sur la cage (15) de la buse, la fente de la bague étant en alignement avec la fente d'introduction (15a) de la cage (15) de la buse.
  3. Support de buse interchangeable selon la revendication 1 ou 2, caractérisé en ce qu'un ressort de freinage (13) est monté sur la vis de retenue (12).
  4. Support de buse interchangeable selon l'une quelconque des revendications 1 à 3, caractérisé par un dispositif de protection de buse (18) comportant une partie d'enveloppe (18a) pouvant être vissée sur la cage (15) de la buse, la partie d'enveloppe (18a) comprenant une fente qui est alignée avec la fente d'introduction (15a) de la cage (15) de la buse.
  5. Support de buse interchangeable selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la monture (17) de la buse comprend un alésage axial perpendiculaire à la poignée (22), dans lequel sont disposées la buse (19), une bague d'étanchéité (20) et une bague de compression (21) maintenant la buse (19) et la garniture (20).
EP19890103407 1988-03-12 1989-02-27 Support de buse interchangeable pour pistolets de pulvérisation de peinture à haute pression Expired - Lifetime EP0337091B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8803389U 1988-03-12
DE8803389U DE8803389U1 (de) 1988-03-12 1988-03-12 Düsen-Wechselhalter für Hochdruck-Farbspritzpistolen

Publications (3)

Publication Number Publication Date
EP0337091A2 EP0337091A2 (fr) 1989-10-18
EP0337091A3 EP0337091A3 (fr) 1991-05-22
EP0337091B1 true EP0337091B1 (fr) 1994-02-02

Family

ID=6821800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890103407 Expired - Lifetime EP0337091B1 (fr) 1988-03-12 1989-02-27 Support de buse interchangeable pour pistolets de pulvérisation de peinture à haute pression

Country Status (2)

Country Link
EP (1) EP0337091B1 (fr)
DE (1) DE8803389U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12090506B2 (en) 2020-07-14 2024-09-17 Techtronic Cordless Gp Powered sprayer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11950677B2 (en) 2019-02-28 2024-04-09 L'oreal Devices and methods for electrostatic application of cosmetics
CN112024226B (zh) * 2020-09-22 2024-09-24 清远市玉启涂装科技有限公司 一种防堵塞汽车喷漆枪

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000576A (en) * 1960-03-01 1961-09-19 Spee Flo Company Spray gun
US3831862A (en) * 1973-04-11 1974-08-27 Airless Spray Tip Mfg Spray tip
US4025045A (en) * 1975-07-21 1977-05-24 Spray Tech Corporation Nozzle guard for airless spray pistols
SE430128B (sv) * 1978-04-11 1983-10-24 Atlas Copco Ab Beroringsskydd vid hogtryckspistol
US4483481A (en) * 1980-07-02 1984-11-20 Phyllis Graham Spray tip
DE8032826U1 (de) * 1980-12-10 1981-07-02 J. Wagner AG, 9450 Altstätten Vorrichtung zur halterung der duese einer spritzpistole
DE3046464A1 (de) * 1980-12-10 1982-07-08 J. Wagner AG, 9450 Altstätten "vorrichtung zur halterung der duese einer spritzpistole
SE8100603L (sv) * 1981-01-29 1982-07-30 Gosta Hellman Sprutanordning
DE3111295A1 (de) * 1981-03-23 1982-10-07 Rudolf Hübner GmbH & Co Apparatebau, 7775 Bermatingen "wendbare spritzduese"
US4508268A (en) * 1982-12-21 1985-04-02 Geberth John Daniel Jun Reversible spray tip
CH655867A5 (fr) * 1984-04-27 1986-05-30 Exit S A Buse de pulverisation, notamment pour pistolets de pulverisation.
US4715537A (en) * 1984-10-19 1987-12-29 Phyllis Graham Spray tip
EP0182489B1 (fr) * 1984-10-19 1988-12-21 Graham, Phyllis, trading as MAGNA CORP. Joint pour élément rotatif contenant un orifice de pulvérisation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12090506B2 (en) 2020-07-14 2024-09-17 Techtronic Cordless Gp Powered sprayer

Also Published As

Publication number Publication date
DE8803389U1 (de) 1988-05-19
EP0337091A3 (fr) 1991-05-22
EP0337091A2 (fr) 1989-10-18

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