EP0804969A2 - Buse de pulvérisation à assistance pneumatique insérée positionable par rotation - Google Patents

Buse de pulvérisation à assistance pneumatique insérée positionable par rotation Download PDF

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Publication number
EP0804969A2
EP0804969A2 EP97302637A EP97302637A EP0804969A2 EP 0804969 A2 EP0804969 A2 EP 0804969A2 EP 97302637 A EP97302637 A EP 97302637A EP 97302637 A EP97302637 A EP 97302637A EP 0804969 A2 EP0804969 A2 EP 0804969A2
Authority
EP
European Patent Office
Prior art keywords
tip
air
axis
front face
cylinder
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Withdrawn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
EP97302637A
Other languages
German (de)
English (en)
Other versions
EP0804969A3 (fr
Inventor
David Koch
Tera D. Allie
Michael A. Stein
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.)
Graco Inc
Original Assignee
Graco Inc
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 Graco Inc filed Critical Graco Inc
Publication of EP0804969A2 publication Critical patent/EP0804969A2/fr
Publication of EP0804969A3 publication Critical patent/EP0804969A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B05B15/16—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for preventing non-intended contact between spray heads or nozzles and foreign bodies, e.g. nozzle guards
    • 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
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/531—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using backflow
    • B05B15/534—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using backflow by reversing the nozzle relative to the supply conduit

Definitions

  • Air assisted airless spraying (see Cowan US Patent No. 3,843,052) has become increasingly popular over the years. As coating materials have been manufactured with higher and higher solids content, the pressures required to atomise such materials (even using air assisted airless atomisation) have become higher and higher. Concurrent with this increase in required working pressures is increased susceptibility to clogging of the nozzle.
  • This invention provides a tip assembly for attachment to an air-assisted spray gun, said tip assembly being characterised by comprising:
  • a cylindrical housing has a crossbore which holds the tip cylinder located inside the air cap.
  • This housing also includes axially extending passages leading from the front end of the gun body to near the front end of the air cap which then intersect with angled passages to provide air assisting atomisation air.
  • An elongated slot is provided in the front and of the air cap parallel to the fan pattern to provide clearance and allow space for the atomisation jets to function.
  • FIG. 1 is a perspective view of the instant invention in the spraying position.
  • FIG. 2 is a side plan view of the instant invention in the spraying position.
  • FIG. 3 is a front perspective view of the instant invention in the cleaning position.
  • FIG. 4 is a side plan view of the instant invention in the cleaning position.
  • FIG. 5 is a perspective view of the tip cylinder.
  • FIG. 6 is a different front perspective view showing the housing and tip guard of the instant invention.
  • FIG. 7 is a partially cutaway side view of the housing of the instant invention.
  • FIG. 8 is a front plan view of the housing of the instant invention.
  • FIG. 9 is a perspective view of the air cap member alone of the instant invention.
  • FIG. 10 is a cross sectional view of the air cap of FIG. 9.
  • FIG. 11 is a wireframe perspective view of the housing of the instant invention.
  • FIG. 12 is a side plan view of the housing of the instant invention.
  • FIG. 13 is a cross section of the housing of the instant invention.
  • the instant invention provides a reversible tip construction for routing air to the front of the gun to assist in atomisation having a sealing mechanism similar to the aforementioned Eull patent.
  • the instant invention provides a cylindrical housing 48 having a crossbore 50 for holding a tip cylinder 12 which is located inside an air cap which includes axial passages leading from the bottom or front end of the gun body itself to near the front end of the air cap whereupon angled passages connected to the axial passages provide air assisting atomisation air jets.
  • An elongated slot is provided in the front end off the air cap parallel to the fan pattern to provide clearance and allow room for the atomisation jets to work.
  • the device of the instant invention is generally shown in Figures 1 to 4 with Figures 1 and 2 showing the device in the spraying position while Figures 3 and 4 show it in the cleaning position.
  • Figure 5 shows the tip cylinder 12 having a handle 14 and a main cylinder 16 with a detent end 18.
  • a tip 20 is located in cavity 22 as is generally known in the art.
  • a stop 24 is provided on cylinder 16 to confine rotation of tip cylinder 12 to approximately 180° between the two aforementioned positions.
  • the tip assembly 10 is provided with an air cap 30 to which a further air cap 28 is attached.
  • Cylindrical passage 32 is provided in air cap 30 for receiving cylinder 16.
  • a detent spring and ball 34 is located in one side of air cap 30 and the end thereof interacts with detent portion 18 on cylinder 16 to retain cylinder 16 in cylindrical passage 32 and housing 48.
  • a retaining ring 36 is used to threadedly attach the assembly 10 to the front end of the spray gun.
  • FIGS 9 and 10 show in more detail air cap 30 and it can be seen that in addition to cylindrical passageway 32, an elongated slot 38 is provided in the front end 40 of cap 30. While it is not shown in Figure 9, the fan pattern of tip 20 runs parallel to the axis of the elongation of slot 38 which thereby provides the fan pattern room to expand without impinging upon the front of air cap 30.
  • passages 42 which run from the back end 44 of cap 30 to near the front end 40 whereupon they terminate in atomisation passages 46 which are angled at about 20° relative to the front face 40 of air cap 30 and intersect the fan pattern about 4.572mm (.180 inches) in front of tip 20.

Landscapes

  • Nozzles (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP97302637A 1996-04-16 1997-04-17 Buse de pulvérisation à assistance pneumatique insérée positionable par rotation Withdrawn EP0804969A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1555296P 1996-04-16 1996-04-16
US15552P 1996-04-18
US83464197A 1997-04-14 1997-04-14
US834641 1997-04-14

Publications (2)

Publication Number Publication Date
EP0804969A2 true EP0804969A2 (fr) 1997-11-05
EP0804969A3 EP0804969A3 (fr) 2000-05-24

Family

ID=26687537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97302637A Withdrawn EP0804969A3 (fr) 1996-04-16 1997-04-17 Buse de pulvérisation à assistance pneumatique insérée positionable par rotation

Country Status (3)

Country Link
EP (1) EP0804969A3 (fr)
JP (1) JPH1034040A (fr)
KR (1) KR19980077319A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999006152A1 (fr) * 1997-07-29 1999-02-11 Wagner Spray Tech Corporation Dispositif et procede de detente reversible d'une tete de pulverisation
EP2136928A1 (fr) * 2007-04-10 2009-12-30 Graco Minnesota Inc. Embout de pulvérisation sans air sous pression réversible
US7789327B2 (en) 2007-05-31 2010-09-07 Illinois Tool Works Inc. Modular spray gun with replaceable components
US8308086B2 (en) 2008-05-12 2012-11-13 Micheli Paul R Airless spray gun having a removable valve cartridge
US8313047B2 (en) 2007-12-10 2012-11-20 Micheli Paul R Spray gun having adjustable handle
US8360345B2 (en) 2007-05-31 2013-01-29 Micheli Paul R Airless spray gun having overhead valve and removable head
CN103801475A (zh) * 2014-03-03 2014-05-21 攀钢集团攀枝花钢铁研究院有限公司 一种清洗雾化器气路支管的方法
US8870097B2 (en) 2008-05-12 2014-10-28 Finishing Brands Holdings Inc. Airless spray gun having a removable valve cartridge and protective insert
US10913079B2 (en) 2015-04-20 2021-02-09 Wagner Spray Tech Corporation Low pressure spray tip configurations
US11865568B2 (en) 2018-03-15 2024-01-09 Wagner Spray Tech Corporation Spray tip design and manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004503352A (ja) * 1999-09-16 2004-02-05 グラコ　ミネソタ　インコーポレーテッド 複数コンポーネント材料用のミキサ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04265171A (ja) * 1991-02-18 1992-09-21 Honda Motor Co Ltd 塗装ガン
EP0664161A1 (fr) * 1994-01-19 1995-07-26 Wagner International Ag Dispositif de pulvérisation de liquides, en particulier de peinture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04265171A (ja) * 1991-02-18 1992-09-21 Honda Motor Co Ltd 塗装ガン
EP0664161A1 (fr) * 1994-01-19 1995-07-26 Wagner International Ag Dispositif de pulvérisation de liquides, en particulier de peinture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 052 (C-1022), 2 February 1993 (1993-02-02) -& JP 04 265171 A (HONDA MOTOR CO LTD), 21 September 1992 (1992-09-21) *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5911364A (en) * 1997-07-29 1999-06-15 Wagner Spray Tech Corporation Reversible tip detent
WO1999006152A1 (fr) * 1997-07-29 1999-02-11 Wagner Spray Tech Corporation Dispositif et procede de detente reversible d'une tete de pulverisation
CN104549818A (zh) * 2007-04-10 2015-04-29 格雷索明尼苏达有限公司 可反转的空气辅助无空气喷头
EP2136928A1 (fr) * 2007-04-10 2009-12-30 Graco Minnesota Inc. Embout de pulvérisation sans air sous pression réversible
CN101678376A (zh) * 2007-04-10 2010-03-24 格雷索明尼苏达有限公司 可反转的空气辅助无空气喷头
EP2136928A4 (fr) * 2007-04-10 2010-09-15 Graco Minnesota Inc Embout de pulvérisation sans air sous pression réversible
CN104549818B (zh) * 2007-04-10 2018-03-23 格雷索明尼苏达有限公司 可反转的空气辅助无空气喷头
US9149820B2 (en) 2007-04-10 2015-10-06 Graco Minnesota Inc. Reversible air-assisted airless spray tip
US7789327B2 (en) 2007-05-31 2010-09-07 Illinois Tool Works Inc. Modular spray gun with replaceable components
US8360345B2 (en) 2007-05-31 2013-01-29 Micheli Paul R Airless spray gun having overhead valve and removable head
US8313047B2 (en) 2007-12-10 2012-11-20 Micheli Paul R Spray gun having adjustable handle
US8870097B2 (en) 2008-05-12 2014-10-28 Finishing Brands Holdings Inc. Airless spray gun having a removable valve cartridge and protective insert
US8308086B2 (en) 2008-05-12 2012-11-13 Micheli Paul R Airless spray gun having a removable valve cartridge
CN103801475A (zh) * 2014-03-03 2014-05-21 攀钢集团攀枝花钢铁研究院有限公司 一种清洗雾化器气路支管的方法
CN103801475B (zh) * 2014-03-03 2016-04-27 攀钢集团攀枝花钢铁研究院有限公司 一种清洗雾化器气路支管的方法
US10913079B2 (en) 2015-04-20 2021-02-09 Wagner Spray Tech Corporation Low pressure spray tip configurations
US11865568B2 (en) 2018-03-15 2024-01-09 Wagner Spray Tech Corporation Spray tip design and manufacture

Also Published As

Publication number Publication date
EP0804969A3 (fr) 2000-05-24
JPH1034040A (ja) 1998-02-10
KR19980077319A (ko) 1998-11-16

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