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EP0155583A1 - Pistolet de pulvérisation - Google Patents

Pistolet de pulvérisation Download PDF

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Publication number
EP0155583A1
EP0155583A1 EP85102403A EP85102403A EP0155583A1 EP 0155583 A1 EP0155583 A1 EP 0155583A1 EP 85102403 A EP85102403 A EP 85102403A EP 85102403 A EP85102403 A EP 85102403A EP 0155583 A1 EP0155583 A1 EP 0155583A1
Authority
EP
European Patent Office
Prior art keywords
air
head
spray gun
nozzle
shell
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Withdrawn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
EP85102403A
Other languages
German (de)
English (en)
Inventor
Irmgard Farnsteiner
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.)
Industreille & Commerciale De Materiel & D'outillage Ste
Original Assignee
Industreille & Commerciale De Materiel & D'outillage Ste
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
Priority claimed from DE3416625A external-priority patent/DE3416625C2/de
Application filed by Industreille & Commerciale De Materiel & D'outillage Ste filed Critical Industreille & Commerciale De Materiel & D'outillage Ste
Publication of EP0155583A1 publication Critical patent/EP0155583A1/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Withdrawn legal-status Critical Current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
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • 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
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • B05B7/241—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus the container being pressurised

Definitions

  • the invention relates to a spray gun with an upper cup arranged above the gun body and a lid closing it on the side facing away from the gun body, which has a central bore, an air supply element protruding into the central bore, a cylindrical section projecting into the upper cup, a sealing ring and a sealing washer is provided on the cylindrical section of the air supply element and cooperates with the sealing ring; an atomizer head for spray guns, with an air head provided with a central, frustoconical bore forming a nozzle outlet and two juxtaposed adjacent to the central bore, in its rear section axially and in its front section converging against the nozzle outlet air channels and one in the central hole, an air supply tion between itself and the bore, with a central bore for supplying material; as well as a spray gun, with a pistol grip which has a connection for compressed air, a pistol shaft communicating with the inside of the pistol grip, which receives an axially penetrating nozzle needle which closes a spray nozzle, and a spray pistol which
  • the invention has for its object to design the lid of the cup in such a way that when the spray gun is inclined, material from the cup cannot get into the gun body via the air supply element and the pressure hose; to create an atomizer head for spray guns in which the jet width and degree of atomization can be set independently of one another; and to create a spray gun in which the required actuation force is low and the pressure point is more noticeable.
  • the paint cup In the case of spray guns with an upper cup arranged above the gun body, the paint cup is provided with a cover which closes the side of the paint cup facing away from the gun body and into which an air supply element provided with a hose nipple is screwed.
  • This air supply element is provided with a continuous axial bore, so that an overpressure can be generated in the ink cup when pressurized with compressed air.
  • a sealing ring and a sealing washer are provided see.
  • Spray guns also have an atomizer head.
  • This atomizer head essentially consists of an air head and a nozzle inserted in it.
  • the material to be sprayed flows out through a fine opening in the nozzle, being carried along by compressed air passing by the nozzle and sprayed with it through an opening in the air head.
  • Adjacent to the central outlet bore of the air head are air ducts arranged opposite one another, axially extending in their rear section and converging in their front section, which flatten the ink jet emerging from the central bore.
  • the jet width is determined by means of a regulating screw acting on a paint needle, by adjusting the air pressure at the air holes of the 'air head with the help of a regulating screw acting on a paint needle.
  • the trigger lever which extends essentially parallel to the gun handle, is fastened by means of an articulated axis which penetrates the upper wall of the gun shaft.
  • the guide pin acted on by the trigger lever and acting on the nozzle needle is arranged in the region of the attachment between the pistol grip and the pistol shaft so as to penetrate it.
  • the load arm of the trigger lever resulting from the distance between the joint axis and the head of the guide pin is thus relatively large, and the corresponding force arm resulting from the distance between the joint axis and the point of application of the finger actuating the trigger lever is only slightly longer. This results in unfavorable leverage ratios, which lead to the fact that the required actuation force is relatively large and the pressure point is not sufficiently noticeable.
  • the invention has for its object to design the lid of the upper cup in such a way that when the spray gun is inclined, materials from the upper cup cannot reach the gun body via the air supply element and the pressure hose.
  • the lid shown in Figure 1 preferably with a bayonet catch is placed on the upper cup, is provided with an air supply element 14, which is inserted centrally in a curvature of the lid 10.
  • the air supply element 14 consists of a first part 34 and a second part 38.
  • the first part 34 is pressed airtight into a bore in the cover 10. It has an axial blind bore 16 provided with an internal thread 32.
  • a cylindrical section 12 of this second part 34 protrudes into the upper cup.
  • a second part 38 is screwed into the internal thread 32 of this first part 34 and is provided with a hose connection nipple 36 and an axial through hole communicating with it and with the blind hole 16.
  • a plurality of radial bores 22 connect the blind hole 16 with a space 18 which is defined by the upper wall of the cover 10 and a sealing washer 20.
  • This sealing washer 20 is placed on the axial section 12 of the air supply element 14 and bears against a sealing ring 24 which is inserted into the cover 10.
  • a shell 28 provided with a central bore is further placed, the periphery of the shell 28 resting on the sealing ring 24. To protect the sealing ring 24 and to ensure a tight seal, the periphery of this shell 28 is designed to be cranked.
  • a spacer 40 between the sealing washer 20 and the shell 28 ensures a distance between the two, a nut 44 and a spring ring 46 serve to secure the sealing washer 20 and the shell 28 on the axial section of the air supply element 14.
  • the sealing washer be 20 is provided with a hole 30, the shell 28 with a passage opening 26.
  • the passage opening 26 is formed as a slot in the wall of the shell 28 which extends parallel to the axis of the upper cup.
  • the air supply element 14 is acted upon by compressed air via the hose (not shown) placed on the hose connection nipple 36.
  • This compressed air passes through the radial bores 22 into the space 18 between the curvature of the cover 10 and the sealing washer 20.
  • the hole 30 enables the compressed air to exit from this space 18 into the space between the sealing washer 20 and the shell 28 and through the passage opening 26 in the bowl 28 in the space of the upper cup.
  • the proposed configuration prevents the paint from escaping from the top cup through the air supply element and the hose into the gun body. Only a small amount of material will be able to enter the area between the shell 28 and the sealing washer 20 through the passage opening 26 which is shaped as a slot. Since the hole 30 is arranged opposite one another during the assembly of the passage opening 26, it is virtually impossible for material entering through the passage opening 26 into the space between the shell 28 and the sealing washer 20 also through the hole 30 into the space 18 between the curvature of the Cover 10 and the sealing washer 20 can reach. However, even if this should happen, this material will not be able to enter the air supply element 14 through the radial bores 22.
  • the proposed design thus prevents in reliable escape of material from the top cup through the air supply element and the hose even when the spray gun is held at an angle during work.
  • FIG. 2 illustrates the air head 10 ', which has a central bore that is cylindrical in the rear section and frustoconical in the front section. This central bore pierces the wall of the air head 10 'and releases a central outlet 32' of the air head 10 '.
  • the nozzle 22' is inserted, which is essentially conical and the tip of which is arranged in the region of the central outlet 32 'of the air head 10'.
  • the nozzle is provided with a central bore, a nozzle outlet 24 'being arranged in the tip of the nozzle.
  • FIG. 2 further illustrates the means proposed according to the invention for adjusting the air head 10 'relative to the nozzle 22'.
  • These have a threaded ring 14 'placed on an external thread 12' on the gun body, the nose 16 'of which against a projection 35' on the air head 10 'in the axial direction forward so that the projection 35 'on the air head 10' is pressed against the nose 16 'of the threaded ring 14'.
  • the threaded ring is rotated, the air head is thus displaced out of the gun body forward or into the gun body inwards relative to the nozzle 22 '.
  • the air head 10 ' is secured against rotation so that the air channels 34' are always aligned with the gun body.
  • Blocking ring 20 ' is provided, which sits on the external thread 12' on the gun body and can be tightened against the threaded ring 14 'in order to prevent an undesired adjustment of the threaded ring 14'.
  • FIG. 3 illustrates the webs 28 'of the nozzle 22' delimiting the channels 26 '. These webs 28 'slide on the inner wall of the central bore 38' of the air head 10 '. The webs thus ensure that, despite the axial displacement of the air head 10 'with respect to the nozzle 22', an exact centering of the nozzle 22 'is ensured, the converging channels running inwards causing an optimal air supply to the central outlet 32'.
  • FIGS. 4 and 5 illustrate the mode of operation of the atomizer head provided according to the invention with means for adjusting the air head relative to the nozzle in the axial direction.
  • the air head is displaced far into the gun body, so that the nozzle outlet 24 'comes out through the central outlet 32' of the air head 10 '.
  • the color beam formed is wide, so it forms a large angle, atomization is less fine.
  • a spray gun according to the invention is shown in cross section.
  • the spray gun essentially consists of two parts, namely the pistol shaft 22 “and the pistol grip 24", which are hollow on the inside and the interiors of which are designed to communicate with one another.
  • the pistol grip 24 is provided at the bottom with a connection for compressed air, the pistol shaft 22" at the front (on the drawing on the left) with a nozzle (not shown).
  • an outlet opening 26" and an inlet opening are provided for connecting a paint vessel.
  • Extending axially through the shaft 22 " is the nozzle needle 30", which is actuated by the guide 32 "and when it is moved rearward (to the right in the drawing) a nozzle opening is exposed.
  • FIG. 8 shows that the trigger lever 12 "surrounds the pistol shaft 22" in a bow-like manner, the two legs 34 ", 36” being provided with bores 38 ", 40".
  • the ratio of the load arm a to the force arm b is thus relatively small, and the force required to actuate the trigger 12 "is accordingly relatively small.
  • the suspension of the bracket in the region of the pistol shaft by means of screws instead of an articulated axis which runs through the upper wall thus improves the lever ratios, which leads to less effort, so that the pressure point of the trigger is more clearly felt, the trigger can be operated more sensitively.
  • the spherical design of the pistol grip 24 "in the region 40", which can be seen in FIG. 6, causes the pistol grip to better nestle into the hand guiding the spray pistol.
  • the spherical thickening in the region 40 "of the pistol grip 24" thus contributes to achieving the aim of the invention, to enable the trigger lever 12 "to be actuated with greater sensitivity; the disturbing edges present in the known spray guns on the sides facing the hand are not available, the contact area between palm and pistol grip is enlarged.

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  • Nozzles (AREA)
EP85102403A 1984-03-03 1985-03-04 Pistolet de pulvérisation Withdrawn EP0155583A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3407966 1984-03-03
DE3407966 1984-03-03
DE3416625A DE3416625C2 (de) 1984-05-05 1984-05-05 Oberbecher-Spritzpistole
DE3416625 1984-05-05
DE3420638 1984-06-02
DE3420638 1984-06-02

Publications (1)

Publication Number Publication Date
EP0155583A1 true EP0155583A1 (fr) 1985-09-25

Family

ID=27191760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102403A Withdrawn EP0155583A1 (fr) 1984-03-03 1985-03-04 Pistolet de pulvérisation

Country Status (1)

Country Link
EP (1) EP0155583A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597044A (en) * 1994-05-10 1997-01-28 Ada Technologies, Inc. Method for dispersing an atomized liquid stream
US8746357B2 (en) 2006-10-20 2014-06-10 Ada Technologies, Inc. Fine water mist multiple orientation discharge fire extinguisher
CN108284009A (zh) * 2018-02-06 2018-07-17 东莞市长原喷雾技术有限公司 一种外混型雾化喷头

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1777650A (en) * 1925-12-07 1930-10-07 Jens A Paasche Air brush and the like
GB520888A (en) * 1937-10-29 1940-05-07 Benvenuto Zabban Improvement in process and device for the production of artificial fogs
US3990609A (en) * 1976-03-12 1976-11-09 Champion Spark Plug Company Attachment for paint spray gun systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1777650A (en) * 1925-12-07 1930-10-07 Jens A Paasche Air brush and the like
GB520888A (en) * 1937-10-29 1940-05-07 Benvenuto Zabban Improvement in process and device for the production of artificial fogs
US3990609A (en) * 1976-03-12 1976-11-09 Champion Spark Plug Company Attachment for paint spray gun systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597044A (en) * 1994-05-10 1997-01-28 Ada Technologies, Inc. Method for dispersing an atomized liquid stream
US8746357B2 (en) 2006-10-20 2014-06-10 Ada Technologies, Inc. Fine water mist multiple orientation discharge fire extinguisher
CN108284009A (zh) * 2018-02-06 2018-07-17 东莞市长原喷雾技术有限公司 一种外混型雾化喷头

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19860301

17Q First examination report despatched

Effective date: 19870305

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19870429

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FARNSTEINER, IRMGARD