EP1048359B1 - Pistolet de pulvérisation pour l'application de revêtements - Google Patents

Pistolet de pulvérisation pour l'application de revêtements Download PDF

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Publication number
EP1048359B1
EP1048359B1 EP00101047A EP00101047A EP1048359B1 EP 1048359 B1 EP1048359 B1 EP 1048359B1 EP 00101047 A EP00101047 A EP 00101047A EP 00101047 A EP00101047 A EP 00101047A EP 1048359 B1 EP1048359 B1 EP 1048359B1
Authority
EP
European Patent Office
Prior art keywords
valve
gun
longitudinal direction
coating
valve body
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
EP00101047A
Other languages
German (de)
English (en)
Other versions
EP1048359A2 (fr
EP1048359A3 (fr
Inventor
Manfred Dankert
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.)
Carlisle Fluid Technologies Germany GmbH
Original Assignee
ITW Oberflaechentechnik 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 ITW Oberflaechentechnik GmbH filed Critical ITW Oberflaechentechnik GmbH
Publication of EP1048359A2 publication Critical patent/EP1048359A2/fr
Publication of EP1048359A3 publication Critical patent/EP1048359A3/fr
Application granted granted Critical
Publication of EP1048359B1 publication Critical patent/EP1048359B1/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
    • 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
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
    • 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

Definitions

  • the invention relates to a spray coating gun for Coating material, in particular Coating liquid, according to the preamble of Claim 1.
  • spray coating gun used here affects not only in one hand Spray coating devices, but also automatic Spray coating devices without a handle, which of a carrier device, for example a lifting stand, a robotic arm or a stationary one Carrier.
  • Spray coating guns Is usable, which for spraying coating powder trained, it mainly affects Spray coating guns for coating liquid.
  • a spray coating gun according to the one in the preamble of Claim 1 specified by the applicant, from ITW endurentechnik GmbH in Dietzenbach, Germany, under the name "JGV high performance pistol” distributed.
  • This is a Spray coating gun for coating liquid.
  • she contains a spray body with a nozzle on the front Gun end; one from a trigger from a first Valve seat away in the longitudinal direction of the gun Opening direction movable first valve body of a Material valve for the coating liquid; one of a second valve seat in the longitudinal direction of the gun rear manually adjustable in the opening direction Valve body of a throttle valve for compressed air, which through this throttle valve through the flow path of the Coating material can be supplied near the spray body, whereby the compressed air via an airway near the Spray nozzle opening downstream of this in the Coating liquid to support them Atomization flows and another part of the compressed air further downstream via radially opposite one another arranged nozzles on the atomized liquid flow flows around this from a substantially circular to reshape a substantially flat beam.
  • the Valve body of the throttle valve can on the Pistol back with a tool relative to his Valve seat to be adjusted by the Throttle valve with a compressed air flow rate largest flow rate that can be set by the trigger Adjust coating liquid.
  • the throttle valve remains in this setting independent of settings of the trigger always open.
  • the flow amount Coating liquid which flows through the material valve can flow depends on how far the valve body of the material valve through the trigger of the Closed position against the force of a compression spring in Gun longitudinal direction can be moved backwards until this movement by hitting two stops is limited.
  • the valve body of the fluid valve is screwed into a stop body by a thread and by an insertable from the back of the gun Tool in this stop body rotatable and thereby additionally axially adjustable.
  • This additional axial Setting is an adjustment with which the distance is defined by which the trigger the valve body of the Material valve from the closed position in Longitudinal gun direction back to an open position can move. The greater this distance, the greater is the greatest possible by operating the trigger adjustable flow opening cross section of the Material valve. If this adjustment is changed, then in order to achieve an optimal one Coating quality and an optimal one Coating efficiency of the opening cross section of the Throttle valve by adjusting its valve body with be adapted to the tool again.
  • More spray coating guns for Coating liquid are from EP 0 157 199 A2 and DE 22 09 896 C2 known.
  • the invention is intended to achieve the object that Switch to different "flow rates Coating material "and suitable” flow rates Compressed air ".
  • the invention has the advantage that at least two different operating variants in a simple way alternatively, a simple handle can be set can.
  • the invention also includes constructions which are based on this way more than two modes with different Have flow rates.
  • the spray coating gun according to the invention contains on front end of a housing or other base body 2 a spray body 4 with a spray nozzle opening 5.
  • a spray body 4 with a spray nozzle opening 5.
  • a nozzle Rotary atomizer body can be provided as this from the State of the art is known.
  • the upstream end of the Nozzle body 4 is designed as a valve seat 6, which cooperates with a valve body 8, the one Center axis 9 and for example the shape of a valve needle Has.
  • the valve body 8 is by a trigger 10 of which Valve seat 6 away from the closed position in Longitudinal gun direction back to an open position manually movable.
  • the trigger is through a swivel axis 12 pivotally attached to the base body 2 and with the Valve body 8 of the material valve 6, 8 for common Movement coupled in the longitudinal direction of the gun.
  • An adjustable throttle valve 16, 18 contains an im Base body 2 formed valve seat 16 and one with it cooperating valve body 18, for example in the form a valve needle.
  • the valve body 18 of the throttle valve is at its rear end in the longitudinal direction of the gun provided with an external thread 20 and thus in a Internal thread 22 in a through opening of a carrier 24 (socket or pipe) screwed in.
  • This valve body 18 is in with one from the back of the gun insertable valve body recess 26 pointing at the rear Tool, e.g. a hexagon wrench, relative to the non-rotatable arranged carrier 24 rotatable and thereby relative to the valve seat 16 to the rear in different sizes Valve opening positions or forward to fully close the throttle valve 16, 18 manually adjustable (adjustable).
  • the carrier 24 is in the base body 2 displaceable in the longitudinal direction of the pistol and has at its Outer circumference extending in the longitudinal direction Guide groove 28 into which a guide pin 30 of Base body 2 protrudes radially inwards and thereby the Carrier 24 prevents rotation, but one Longitudinal movement relative to the base body 2 is permitted.
  • the valve body 18 of the throttle valve 16, 18 extends on the upstream side of the valve seat 16 through a compressed air channel 32, which extends through the Base body 2 extends and which one Compressed air source Compressed air 33 from one through one electronic control device controlled valve (not shown) can be supplied.
  • the compressed air 33 flows in open throttle valve 16, 18 downstream of the Nozzle body 4 arranged diagonally to each other Nozzle openings 34 as shaping air or so-called Horn air (because the compressed air nozzles 34 in "horn" -like Projections of a gun head are formed) short downstream after the nozzle body 4 from two sides on the sprayed coating material stream 38 and forms it from an omnidirectional jet to a flatter jet or one Flat jet around.
  • some of the compressed air can be opened Throttle valve 16, 18 through atomizing air nozzle openings 40, which is close to or in the nozzle body 4 close to the Spray nozzle opening 5 are formed in the Flow coating material stream around its atomization to optimize.
  • Electrodes 44 for charging the coating material with electrical high voltage may be provided.
  • the valve body 8 of the material valve 6, 8 is on its on the side of the trigger 10 facing away from the valve seat 6 located rear portion 48 with a thread 50th provided and thus in an internal thread 52 of an axial Through opening of a carrier 54 (socket or tube) screwed.
  • the valve body 8 is relative to this Carrier 54 rotatable with a tool, for example a Hex key, which is from the back of the gun in a recess 56 of a rearward facing Front of the rear valve body section 48 can be used.
  • a tool for example a Hex key, which is from the back of the gun in a recess 56 of a rearward facing Front of the rear valve body section 48 can be used.
  • This allows the maximum flow opening cross-section of the material valve 6, 8 adjusted on which the valve body 8 in Longitudinal gun backwards with trigger 10 is adjustable, starting from the closed position of the Coating material valve 6, 8.
  • Trigger 10 When not activated Trigger 10, the valve body 8 by one in it Closing direction
  • the compression spring 60 is between one pointing rearward End face 62 of the carrier 54 of the material valve and one forward-facing end surface 64 of one radially inward protruding projection 66 with axial bias clamped.
  • the protrusion 66 can be a radially inward protruding collar or a pin or the like on one axially continuous hollow adjustment part 70 (socket or tube) be in which the carrier 54 is guided axially is.
  • the rear end of the adjustment part 70 is at his Outer circumference designed as a handle 72, preferably after Kind of a push-turn knob.
  • the adjustment part 70 is in the base body 2 or in one with the base body 2 fixedly connected body in Longitudinal direction of the valve body 8 of the material valve 6, 8 slidably and rotatably mounted.
  • a guide groove In the outer circumference of the Adjustment part 70 is formed a guide groove that a longitudinal groove portion 76 and one of its own axially rear end in a circumferential direction by one certain circumferential distance extending circumferential groove section 78 exists.
  • the base body 2 is with a guide pin 80 provided, which radially inward into the guide groove 74 engages and is guided therein.
  • the guide pin 80 prevents the longitudinal groove section 76 from rotating Adjustment part 70 relative to the base body 2 and leads the Adjustment part 70 in the longitudinal direction.
  • the adjustment part 70 can be a distance "s" from the in Fig. 1 shown operating position "large flow rate per Time unit of coating material "on handle 72 manually shifted to the left in Fig. 2 shown operating position "small flow rate per Unit of time of coating material " Guide pin 80 from the front end to the rear end of the Longitudinal groove section 76 moves where the Circumferential groove section 78 is so that now Adjustment part 70 can be rotated manually and the Guide pin 80 engages in the circumferential groove section 78.
  • the Invention can be provided that a forward-facing Stop surface 84 of the base body 2 one to the rear pointing stop surface 86 of the adjustment part 70 contacted.
  • the valve body 8 of the material valve 6, 8 can be triggered by the trigger 10 against the force of the spring 60 from the valve closed position shown in FIG. 1 by one "large" distance "SM1" are moved in the opening direction, which is the largest possible cross section of the orifice Material valve 6,8 for those shown in Fig.
  • Adjustments of the two valve bodies 8 and 18 results.
  • the large distance "SM1" is limited by contacting one rear-facing stop surface 88 of the carrier 54, which carries the valve body 8 of the material valve 6, 8, on a forward-facing stop 90 of the adjustment part 70th
  • Adjustment part 70 was from FIG. 1 to FIG. 2 relative to Base body 2 rotated manually so that the guide pin 80th engages in the circumferential groove section 78 and thereby the Path of movement of the adjustment part 70 relative to the base body 2 limited in both axial directions.
  • the back groove wall pointing forms a stop surface 92 on which the guide pin 80 abuts and the force of the compression spring 60 records.
  • the adjustment part 70 is a driver, e.g. a bracket 94 with the carrier 24 of the valve body 18 of the Throttle valve 16, 18 for common movement in Coupled longitudinally, so that both only together in Gun longitudinal direction are movable, however Adjustment part 70 relative to bracket 94 and thus also relative to the carrier 24 of the valve body 18 of the throttle valve 16, 18 is manually rotatable.
  • the bracket 94 has one in one Circumferential groove 96 of the adjusting part 70 engaging ring part 97 and one in a circumferential groove 98 of the throttle valve 16, 18 associated carrier 24 engaging fork part 99th
  • Fig. 3 shows a part of the spray coating gun in the operating position of Fig. 1, the two Guide grooves 28 and 74 and the associated Guide bolts 30 and 80 are drawn rotated by 90 °, so that more details can be seen more easily.
  • any compressed air coating material ratios through the threads 50, 52 of the material valve 6, 8 and the thread 20, 22 of the adjustable throttle valve 16, 18 are adjustable, for both the operation setting of Fig. 2 (and Fig. 4) as well as for the operating setting of FIGS. 1 and 3.
  • the adjustment part 70 is quick in a simple manner switchable between two operating positions, the Compressed air volume the switchable Coating material quantities accordingly automatically is switched.

Landscapes

  • Nozzles (AREA)

Claims (4)

  1. Pistolet de pulvérisation pour matériau de revêtement, en particulier liquide de revêtement, contenant un corps de pulvérisation (4) à l'extrémité avant du pistolet, pour pulvériser le matériau de revêtement ; un premier corps de soupape (8) d'une soupape de matériau (6, 8) pour le matériau de revêtement, pouvant être déplacé manuellement d'une position de fermeture dans une position d'ouverture par une gâchette (10) depuis un premier siège de soupape (6) dans la direction longitudinale du pistolet ; un deuxième corps de soupape (18) d'une soupape d'étranglement pour de l'air comprimé qui peut être acheminé par cette soupape d'étranglement au trajet d'écoulement du matériau de revêtement à proximité du corps de pulvérisation, ce deuxième corps de soupape pouvant être ajusté manuellement dans la direction longitudinale du pistolet par rapport à un deuxième siège de soupape (16) ;
    caractérisé en ce que
    l'on prévoit un moyen de limitation de la distance de trajet (2, 70, 74, 80, 54) ajustable manuellement, grâce auquel la distance d'actionnement maximale du premier corps de soupape (8) ajustable avec la gâchette (10) et donc la section transversale d'ouverture d'écoulement la plus grande possible ajustable de la soupape de matériau (6, 8) peut être limitée en alternance à au moins deux valeurs différentes, et en ce que le moyen de limitation de la distance de trajet présente une pièce de réglage (70) qui est ajustable en fonction des au moins deux valeurs dans la direction longitudinale du pistolet en alternance à au moins deux positions longitudinales différentes et est accouplée au deuxième corps de soupape (18) de la soupape d'étranglement (16, 18) en vue de l'ajustage conjoint dans la direction longitudinale du pistolet.
  2. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que le premier corps de soupape (6) de la soupape de matériau (6, 8) est ajustable manuellement dans la direction longitudinale du pistolet par rapport à un support (54), et en ce que ce support (54) est chargé, dans la direction de fermeture de la soupape de matériau (6, 8), par un moyen à ressort (60) tendu dans la direction longitudinale du pistolet entre lui et la pièce de réglage (70).
  3. Pistolet de pulvérisation selon la revendication 1 ou 2, caractérisé en ce que le deuxième corps de soupape (18) de la soupape d'étranglement (16, 18) est ajustable manuellement dans la direction longitudinale du pistolet par rapport à la pièce de réglage (70) du moyen de limitation de la distance de trajet.
  4. Pistolet de pulvérisation selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen de limitation de la distance de trajet présente, entre sa pièce de réglage (70) et un corps de base (2), un agencement de liaison par poussée et rotation (74, 80), qui présente, dans l'une des deux pièces constituées par la pièce de réglage (70) ou le corps de base (2), au moins une rainure de guidage (74) avec une portion de rainure longitudinale (76) s'étendant dans la direction longitudinale du pistolet et une portion périphérique (78) s'étendant depuis une extrémité de la portion de rainure longitudinale (76) dans la direction périphérique par rapport à un axe médian (9) du premier corps de soupape (8) sur une distance définie, et qui présente, dans l'autre pièce concernée, constituée par la pièce de réglage ou le corps de base, un tourillon de guidage (80) guidé dans la rainure de guidage (74).
EP00101047A 1999-04-27 2000-01-20 Pistolet de pulvérisation pour l'application de revêtements Expired - Lifetime EP1048359B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919037A DE19919037A1 (de) 1999-04-27 1999-04-27 Sprühbeschichtungspistole
DE19919037 1999-04-27

Publications (3)

Publication Number Publication Date
EP1048359A2 EP1048359A2 (fr) 2000-11-02
EP1048359A3 EP1048359A3 (fr) 2002-07-03
EP1048359B1 true EP1048359B1 (fr) 2003-10-22

Family

ID=7905981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101047A Expired - Lifetime EP1048359B1 (fr) 1999-04-27 2000-01-20 Pistolet de pulvérisation pour l'application de revêtements

Country Status (3)

Country Link
EP (1) EP1048359B1 (fr)
BR (1) BR0000772A (fr)
DE (2) DE19919037A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101369A1 (de) * 2001-01-13 2002-07-18 Itw Oberflaechentechnik Gmbh Sprühverfahren und Sprühvorrichtung für Beschichtungsflüssigkeit
DE10101372A1 (de) 2001-01-13 2002-08-01 Itw Oberflaechentechnik Gmbh Sprühverfahren und Sprühvorrichtung für Beschichtungsflüssigkeit
DE10250531A1 (de) 2002-10-29 2004-05-19 ITW Oberflächentechnik GmbH & Co. KG Spritzbeschichtungsvorrichtung für Beschichtungsflüssigkeit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1537997A (fr) * 1967-07-31 1968-08-30 Sames Mach Electrostat Dispositif de peinture à pulvérisation pneumatique
US3488004A (en) * 1968-04-08 1970-01-06 Devilbiss Co Airless dual component spray gun
CA976341A (en) * 1971-03-03 1975-10-21 Electrogasdynamics Pneumatically assisted hydraulic spray coating apparatus
FR2577447B1 (fr) * 1985-02-15 1988-06-03 Devilbiss Toussaint Dispositif de reglage de debit par pointeau et application a un appareil de pulverisation pneumatique a reglage rapide de forme de jet

Also Published As

Publication number Publication date
DE19919037A1 (de) 2000-11-02
AU726660B1 (en) 2000-11-16
BR0000772A (pt) 2001-10-09
EP1048359A2 (fr) 2000-11-02
DE50004124D1 (de) 2003-11-27
EP1048359A3 (fr) 2002-07-03

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