EP2007524B1 - Dispositif de pulverisation - Google Patents

Dispositif de pulverisation Download PDF

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Publication number
EP2007524B1
EP2007524B1 EP07727848A EP07727848A EP2007524B1 EP 2007524 B1 EP2007524 B1 EP 2007524B1 EP 07727848 A EP07727848 A EP 07727848A EP 07727848 A EP07727848 A EP 07727848A EP 2007524 B1 EP2007524 B1 EP 2007524B1
Authority
EP
European Patent Office
Prior art keywords
nozzle head
fixing
fixing pin
housing
hole
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.)
Active
Application number
EP07727848A
Other languages
German (de)
English (en)
Other versions
EP2007524A1 (fr
Inventor
Franz-Hermann Haas
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.)
Krautzberger GmbH
Original Assignee
Krautzberger 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 Krautzberger GmbH filed Critical Krautzberger GmbH
Priority to PL07727848T priority Critical patent/PL2007524T3/pl
Publication of EP2007524A1 publication Critical patent/EP2007524A1/fr
Application granted granted Critical
Publication of EP2007524B1 publication Critical patent/EP2007524B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B05B7/083—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter comprising rotatable spray shaping gas jet outlets

Definitions

  • the invention relates to a spray device having a housing and a nozzle head, wherein the nozzle head can be attached to the housing via a fastening means in different positions, according to the preamble of patent claim 1.
  • Such spraying devices are used, for example, when painting vehicle parts or furniture.
  • the injection device is located at the end of a robot arm.
  • the nozzle head is subject to some wear during operation and must therefore be replaced regularly.
  • a union nut is released from a threaded socket and replaced the worn nozzle head.
  • the union nut is screwed on again, it happens again and again that the nozzle head also rotates, thereby aligning the outlet openings arranged in the nozzle head in an altered position relative to the housing.
  • it is important that the new nozzle head is aligned in the same position as the replaced nozzle head.
  • the US-A-1849300 discloses a spray device with a housing and with a nozzle head according to the preamble of claim 1, wherein the nozzle head is attachable via a fastening means in different positions on the housing of the spray device.
  • At least one movable in the axial direction and spring-biased fixing pin is provided on the nozzle head or on the housing, which engages in a locking position in at least one arranged in the respective other component fixing bore.
  • the fixing pin is provided at one end with a dome.
  • the object of the invention is to provide a spray device in which an exact alignment of a nozzle head in a predeterminable position is possible and rotation of the spray head in the direction of rotation of the union nut when tightening the nut is prevented.
  • the object is achieved with a spraying device, in which the fixing pin is provided at at least one end with a dome, and characterized in that the dome has a cutout with a dome edge.
  • a spray device is understood to be a spray gun or a spray gun.
  • a material channel with a material needle, which interacts with a material outlet nozzle.
  • the material needle is adjustable in the axial direction, so that the amount of material that emerges from the material outlet nozzle, can be controlled.
  • the material discharge nozzle is an annular nozzle, so that a circular stream of material is generated.
  • the fastening device such as a union nut, not fully tightened, so that between the nozzle head and the housing further relative movement is possible and engages by rotating the nozzle head of the spring-biased fixing pin in the at least one fixing hole. If several fixing holes are present, the fixing pin engages in successive rotation in the individual fixing holes. However, the detent positions are then perceived by the operator. The operator only needs to remember about the position of the nozzle head during disassembly and reaches it exactly in the locked position.
  • the fixing pin is provided at one end with a dome.
  • the dome should protrude from the guide bore, for example, be supported on the nozzle head and immerse in reaching the detent position in the corresponding fixing hole.
  • the dome shape of the locating pin facilitates outward movement and sliding back of the locating pin from the fixation bore.
  • the dome has a cutout with a dome edge.
  • the dome edge has the advantage that it unfolds a blocking effect in cooperation with a corresponding surface of the fixing hole, so that a rotation of the spray head in the direction of rotation of the nut when tightening can be effectively prevented.
  • the fixing pin in the housing and the at least one fixing hole are arranged in the nozzle head.
  • This embodiment has the advantage that the nozzle head, which must be exchanged more frequently as a wearing part, carries the fixing hole to be introduced easily, while the fixing pin together with a compression spring represents the component to be produced more complexly and is therefore arranged on the housing.
  • the laterally movable fixing requires much more space, which is usually not available in the nozzle head.
  • the fastening means is a nozzle head cross-cap nut, which can be brought into operative engagement with a threaded socket of the housing. After reaching the detent position, the nozzle head is rotatably connected by further rotation of the union nut with the automatic spray gun without an adjustment of the held by means of fixing pin and fixing hole nozzle head.
  • the fixing pin is mounted in a guide bore, which is aligned in the axial extent of the housing of the spray device and / or the nozzle head.
  • the fixing hole receives both the fixing pin and a pressure-loaded spring element.
  • the guide bore should have a greater axial length than the fixing pin.
  • the tip of the dome makes up less than 50% of the dome volume. This means that at least the apex of the tip surface, which may be a spherical surface in particular, is maintained. This has the advantage that the dome rests on further rotation of the nozzle head with a round surface on the flat bottom of the nozzle head. The set against the crest of the dome top edge can not damage the support surface of the nozzle head.
  • the fixing pin is secured against rotation. This ensures that the dome edge remains in the intended orientation and the blocking effect always occurs with respect to the same direction of movement.
  • the fixing pin has at least one axial section with a radial recess.
  • a bore is preferably introduced in the housing, which spans a plane with the guide bore and hits it.
  • a fixing screw may be inserted such that it protrudes into or through the recess of the fixing pin.
  • the travel of the fixing pin is limited by the recess and thereby extending or projecting fixing screw.
  • the spring element presses the fixing pin within the fixing hole to the front.
  • the recess also moves forward until the end of the recess abuts against the fixing screw and thereby further pushing out of the spring-biased fixing pin is prevented.
  • a rotation of the fixing pin is prevented.
  • the at least one fixing bore has an inner diameter which is slightly larger than the outer diameter of the fixing pin, so that it can be received by the fixing hole.
  • a plurality of fixing holes form a lock circle, the lock circle always facing the guide hole.
  • the lock circle may, for example, comprise five fixing holes in an orientation of 45 ° to each other.
  • the fixing holes can be arranged on the underside of a mounting flange of the nozzle head.
  • the mounting flange is an annular flat surface and comes with an attached nozzle head preferably on the threaded base of the housing for support.
  • the fixing hole is a blind bore, which has at least one inclined surface to the axis of the fixing pin in a direction of movement of the nozzle head.
  • the fixing pin is fixed in the guide bore in such a way that the tip edge rests against the inclined surface and in this way unfolds its blocking action in the intended direction of movement.
  • the nozzle head has a material outlet nozzle.
  • This material outlet nozzle preferably produces an omnidirectional jet.
  • the material used is preferably a coating material for coating substrates.
  • the nozzle head preferably has at least one horn with at least one air nozzle laterally of the material outlet nozzle. It is preferred to provide at least two opposing horns.
  • FIG. 1 shows a partially sectioned perspective view of a spraying device 2 with a housing 19 and with a fastening means 3 attached thereto nozzle head 1.
  • the spraying device 2 has a substantially cuboidal housing 19, in which inter alia, arranged in a material passage 20 material needle 16 and further not shown in detail pressure lines and adjusting devices for supplying compressed air and material are housed.
  • a material outlet nozzle 15 can be seen in a central area, from which the coating material to be sprayed emerges.
  • the material outlet nozzle 15 is surrounded by two opposing horns 17, of which in the illustration of FIG. 1 only one horn 17 can be seen.
  • the horns 17 there is at least one air nozzle 18, from which compressed air emerges, with which the geometry of the coating material jet can be influenced.
  • the material jet has, for example, a round cross-section (round jet) and can be changed to a flat jet by the air flowing out of the air nozzles. In order to strike a workpiece to be coated with a material beam aligned therewith, it is of great importance, even after a removal of the nozzle head 1, to mount it again in the original orientation on the housing 19.
  • the fastening means 3 comprises a union nut 6, which is turned concentrically onto a threaded socket 7 provided with an external thread. First, however, the nut 6 is not fully tightened, but only so far that the nozzle head 1 still continue to rotate relative to the housing 19 and thereby adjust in the intended position.
  • the adjustment takes place by means of a fixing pin 4, which is held in its axial direction movable in a guide bore 8. With a removed nozzle head 1, the fixing pin 4 projects out of the guide bore 8 due to a spring element 14, which is likewise inserted in the guide bore 8. After placing the nozzle head 1, the fixing pin 4 is pushed back through the mounting flange 13 of the nozzle head 1 in the guide bore 8. Upon rotation of the nozzle head. 1 slides the fixing pin 4 until it reaches a first fixing hole 5 with its front end to the mounting flange 13 along. After reaching the first fixing hole 5 of the fixing pin 4 dives into the fixing hole 5 due to the spring force of the spring element 14 and thereby locks the nozzle head 1 on the housing 19. In the embodiment of FIG. 1 are within the mounting flange 13 even more circumferentially spaced fixation holes. 5
  • the operator must continue to rotate the nozzle head 1 against the resistance of the protruding fixing pin 4.
  • the fixing pin 4 then slides back in the guide bore 8, so that the nozzle head 1 can continue to rotate.
  • the pushing out of the fixing pin 4 from the fixing hole 5 is possible in particular by a formed at the front end tip 9, which is particularly good in FIG. 3 can be seen.
  • FIG. 2 shows a cross section through the spray device 2 with a nozzle head 1 screwed thereto, which in connection with the FIG. 1 described horns 17 are not visible due to the choice of the cutting plane.
  • the fixing pin 4 in this area has a recess 10 through which the fixing screw 12 extends through and thereby holds the fixing pin 4 in position. Due to the interplay of recess 10 and fixing screw 12 only a limited axial movement of the fixing pin 4 is possible, but no rotational movement about its own axis.
  • a fixing pin 4 is used with a cut-out tip 9.
  • This has a spherical surface 9 'and a step-like side, which ensures that the nozzle head 1 can be easily rotated in a preferred direction of rotation and locked in the opposite direction.
  • the step-like side is formed by the cutout 30, which has an end face 33 and a side face 31.
  • the side surface 31 forms a dome edge 32 with the dome 9.
  • the cutout 30 preferably comprises less than 50% of the volume of the full dome, so that the edge 32 is not located in the apex 42 of the dome 9.
  • the dome edge 32 is set back relative to the apex 42.
  • the fixing hole 5 is formed by a blind bore having at least one inclined to the pin axis 35 surface 40 on which the edge 32 engages.
  • the fixing bore 5 has a conical surface 40.
  • a movement of the nozzle head 1 is possible because the spherical surface 9 'of the tip 9 abuts the conical surface 40, which moves the pin 40.

Claims (17)

  1. Dispositif de pulvérisation (2) muni d'un carter (19) et d'une tête de pulvérisation (1), ladite tête de pulvérisation (1) pouvant, par l'intermédiaire d'un moyen de fixation (3), être implantée dans différentes positions sur ledit carter (19) dudit dispositif de pulvérisation (2),
    sachant qu'il est prévu, sur ladite tête de pulvérisation (1) ou sur ledit carter (19), au moins un goujon d'arrêt (4) mobile dans sa direction axiale, précontraint élastiquement et pénétrant, dans une position crantée, dans au moins un perçage d'arrêt (5) pratiqué dans l'autre pièce structurelle considérée (1, 19),
    ledit goujon d'arrêt (4) étant pourvu d'une région arrondie (9) à au moins une extrémité,
    caractérisé par le fait
    que ladite région arrondie (9) présente une découpe (30) munie d'une arête arrondie (32).
  2. Dispositif selon la revendication 1, caractérisé par le fait que le goujon d'arrêt (4) est logé dans le carter (19) et le perçage d'arrêt (5), prévu au minimum, est pratiqué dans la tête de pulvérisation (1).
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que le moyen de fixation (3) est un capuchon taraudé (6) coiffant la tête de pulvérisation (1), et en prise opérante avec un embout fileté (7) du carter (19).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que le goujon d'arrêt (4) est monté dans un alésage de guidage (8) orienté suivant l'étendue axiale du carter (19) et/ou de la tête de pulvérisation (1).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que l'arête arrondie (32) est en retrait par rapport au sommet (42) de la région arrondie (9).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait que la rotation du goujon d'arrêt (4) est interdite.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que le goujon d'arrêt (4) comporte au moins un tronçon axial pourvu d'un évidement radial (10).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait qu'un alésage (11), pratiqué dans le carter (19), délimite un plan avec l'alésage de guidage (8) et vient rencontrer ce dernier.
  9. Dispositif selon la revendication 8, caractérisé par le fait qu'une vis de blocage (12) est insérée, dans l'alésage (11), de façon telle qu'elle s'engage dans l'évidement radial (10) du goujon d'arrêt (4).
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé par le fait que le perçage d'arrêt (5), prévu au minimum, offre un diamètre intérieur légèrement plus grand que le diamètre extérieur du goujon d'arrêt (4).
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé par le fait que plusieurs perçages d'arrêt (5) forment une couronne de perforations, ladite couronne de perforations se trouvant, en permanence, en regard de l'alésage de guidage (8).
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé par le fait que les perçages d'arrêt (5) sont situés sur la face inférieure d'une aile (13) de fixation de la tête de pulvérisation (1).
  13. Dispositif selon l'une des revendications 1 à 12, caractérisé par le fait que le perçage d'arrêt (5) est un trou borgne présentant, dans une direction de mouvement de la tête de pulvérisation (1), au moins une surface (40) inclinée par rapport à l'axe (35) du goujon d'arrêt (4).
  14. Dispositif selon la revendication 13, caractérisé par le fait que le goujon d'arrêt (4) occupe, dans l'alésage de guidage (8), une position telle que l'arête arrondie (32) soit en applique contre la surface inclinée (40).
  15. Dispositif selon l'une des revendications 1 à 14, caractérisé par le fait que la tête de pulvérisation (1) présente une buse (15) de sortie de matière.
  16. Dispositif selon l'une des revendications 1 à 15, caractérisé par le fait que la tête de pulvérisation (1) comporte, latéralement par rapport à la buse (15) à matière, au moins un éperon (17) muni d'au moins une buse (18) à air.
  17. Dispositif selon la revendication 16, caractérisé par le fait que la tête de pulvérisation (1) comprend au moins deux éperons (17) agencés en vis-à-vis.
EP07727848A 2006-04-21 2007-04-05 Dispositif de pulverisation Active EP2007524B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07727848T PL2007524T3 (pl) 2006-04-21 2007-04-05 Urządzenie natryskowe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006019364A DE102006019364A1 (de) 2006-04-21 2006-04-21 Spritzvorrichtung
PCT/EP2007/053380 WO2007122094A1 (fr) 2006-04-21 2007-04-05 Dispositif de pulvérisation

Publications (2)

Publication Number Publication Date
EP2007524A1 EP2007524A1 (fr) 2008-12-31
EP2007524B1 true EP2007524B1 (fr) 2010-11-17

Family

ID=38229610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727848A Active EP2007524B1 (fr) 2006-04-21 2007-04-05 Dispositif de pulverisation

Country Status (6)

Country Link
EP (1) EP2007524B1 (fr)
AT (1) ATE488303T1 (fr)
DE (2) DE102006019364A1 (fr)
ES (1) ES2354995T3 (fr)
PL (1) PL2007524T3 (fr)
WO (1) WO2007122094A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9192950B2 (en) * 2009-11-20 2015-11-24 Wagner Spray Tech Corporation Sprayer for a fluid delivery system
US10940498B2 (en) 2017-09-14 2021-03-09 Wager Spray Tech Corporation Airless spray gun with improved trigger assembly

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849300A (en) * 1927-01-08 1932-03-15 Alexander F Jenkins Air brush
US4660774A (en) * 1985-05-23 1987-04-28 Graco Inc. Fluid nozzle locking mechanism
US4858789A (en) * 1988-04-04 1989-08-22 Loctite Corporation Sealless modular positive displacement dispenser
JP2772590B2 (ja) * 1991-06-15 1998-07-02 エービービー・インダストリー株式会社 塗装用スプレーガン
JPH08293452A (ja) * 1995-04-25 1996-11-05 Mitsubishi Electric Corp レジスト塗布装置
DE19605227A1 (de) * 1996-02-13 1997-08-14 Hk Haag & Kurz Gmbh Anschlußverbindung zwischen einer Spritzpistole und einem Ausgabeteil
US5992762A (en) * 1998-07-01 1999-11-30 Yuan Mei Corp. Full flow opening structure of gardening-used figure sprinkling head
US6164566A (en) * 1999-09-15 2000-12-26 Hui-Chen; Chao Water ejecting structure of pistol nozzle
US6540163B1 (en) * 2002-10-02 2003-04-01 Dustin Huang Water spray pistol
US20050098658A1 (en) * 2003-11-12 2005-05-12 Burke David J. Pre-rinse assembly
US7281673B2 (en) * 2004-07-29 2007-10-16 Robert Bosch Gmbh Multi-pattern spray nozzle assembly with movable water conduit

Also Published As

Publication number Publication date
EP2007524A1 (fr) 2008-12-31
WO2007122094A1 (fr) 2007-11-01
ES2354995T3 (es) 2011-03-21
PL2007524T3 (pl) 2011-04-29
DE102006019364A1 (de) 2007-10-25
DE502007005676D1 (de) 2010-12-30
ATE488303T1 (de) 2010-12-15

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