EP0681872A2 - Dispositif de fixation d'un dispositif de pulvérisation - Google Patents

Dispositif de fixation d'un dispositif de pulvérisation Download PDF

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Publication number
EP0681872A2
EP0681872A2 EP95104365A EP95104365A EP0681872A2 EP 0681872 A2 EP0681872 A2 EP 0681872A2 EP 95104365 A EP95104365 A EP 95104365A EP 95104365 A EP95104365 A EP 95104365A EP 0681872 A2 EP0681872 A2 EP 0681872A2
Authority
EP
European Patent Office
Prior art keywords
carrier
sprayer
coupling
spray
compressed air
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.)
Granted
Application number
EP95104365A
Other languages
German (de)
English (en)
Other versions
EP0681872B1 (fr
EP0681872A3 (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 EP0681872A2 publication Critical patent/EP0681872A2/fr
Publication of EP0681872A3 publication Critical patent/EP0681872A3/fr
Application granted granted Critical
Publication of EP0681872B1 publication Critical patent/EP0681872B1/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
    • 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

Definitions

  • the invention relates to a sprayer fastening device for fastening a sprayer to a carrier, in particular to an arm of a robot.
  • the sprayers are usually provided with electrodes, which are connected to a high voltage source and generate an electrostatic field for electrostatically charging the coating material.
  • the spray device of the invention can also be provided with such high-voltage electrodes.
  • the coating material can be a liquid or powder. Liquid coating material is used, for example, to coat car bodies. Powdery coating material can also be used for coating car bodies, but is currently mainly used for coating other parts, for example wall and ceiling elements, housings for household appliances, etc.
  • Sprayers of this type are generally referred to as "guns". They can be in the form of hand guns or in the form of spray devices attached to a carrier. By means of the carrier, they can preferably be moved in different directions relative to the objects to be coated.
  • the carrier can be the arm of a robot, for example. To achieve good coating qualities, it is necessary that the sprayer cannot make any wobbling movements.
  • a spray device for electrostatically coating objects with liquid or powder coating material contains a valve needle arranged axially to the spray direction, which cooperates with a valve seat directly upstream of a spray opening, via which liquid coating material can flow to the spray opening.
  • the sprayer has horn-like projections on diametrically opposite sides of the sprayed coating material downstream of the spray opening. In these horn-like projections, high-voltage electrodes are accommodated in air outlet channels, from which air flows out to form the atomized coating material jet.
  • US Pat. No. 4,275,838 shows a spray device which has a rotary bell instead of a spray opening for atomizing liquid coating material. Furthermore, US Pat. No.
  • 4,196,465 shows an electrostatic spray device for spray coating objects with powdered coating material.
  • This sprayer contains a high voltage generator and electrodes for electrostatically charging the powder.
  • the sprayer can optionally be provided with a handle for manual operation or attached to a carrier, for example a robot arm.
  • the invention is intended to achieve the object of designing a spray device for spray coating objects in such a way that it can be quickly attached to a carrier, for example a robot arm, and separated again without it being able to wobble in the attached state.
  • the spraying device should be designed so that a change to different coating materials and an exchange of wear elements can be carried out quickly without long interruptions in the coating operation being required.
  • the drawings show a spray device 2 for spray coating objects with coating material, which is sprayed in the direction of an arrow 4.
  • This spray direction 4 corresponds to the longitudinal direction of the spray device 2.
  • the spray device 2 shown in the drawings does not contain any electrical high-voltage electrodes for electrostatically charging the coating material.
  • the spray device 2 can, however, be provided with such high-voltage electrodes.
  • liquid coating material is used.
  • the spray device 2 is designed as a plug-in unit, which to their Attachment and for connecting their supply lines 60,62,64,68,74,80 to a carrier 6 and to the supply lines which are passed through the carrier 6, can be plugged.
  • annular compressed air cylinder 10 On the carrier 6, on its side facing the sprayer 2, an annular compressed air cylinder 10 is attached.
  • the carrier 6 has the shape of a plate and is part of a spray coating system, for example the arm of a robot, which moves the spray device 2 in a computer-controlled manner relative to an object to be coated.
  • a corresponding ring-shaped tensioning piston 12 can be tensioned by means of compressed air in a compressed air chamber 14 against the spray direction against a coupling pin 16.
  • the coupling bolt 16 extends through a first coupling bore 18 formed in the carrier 6 and through a second coupling bore 20 aligned with it. The coupling bolt 16 protrudes from the carrier 6 so that it can be operated by hand.
  • the second coupling bore 20 extends radially through a coupling projection 22, which is formed at the rear end of the spray device 2 axially to a central axis 24 of the spray device 2 and is inserted into a coupling receiving bore 26 of the connecting plate 8 opposite to the spray direction 4.
  • the coupling receiving bore 26 positions the sprayer 2 in the radial direction.
  • the spray device 2 has a front housing part 28, a central housing part 30 and a rear housing part 32, which are arranged axially one after the other.
  • the rear housing part 32 consists in one piece of a flange part 34 and the coupling projection 22 which is smaller in diameter and axially extending away therefrom.
  • the flange part 34 is annular with its rear coupling projection 22 surrounding flange surface 36 on the end face 38 of the compressed air cylinder 10 pointing in the spraying direction 4.
  • the sprayer 2 When the sprayer 2 is attached to the carrier 6, it is inserted with its coupling projection 22 into the coupling receiving bore 26.
  • the coupling bolt 15 is then inserted through the first bore 18 of the carrier 6 and the second bore 20 in the coupling projection 22.
  • the coupling receiving bore 26, the coupling projection 22, the coupling bolt 16 and the bores 18 and 20 together form a mechanical quick connection device for mechanically attaching the spray device 2 to the carrier 6.
  • the tensioning piston 12 is provided for a wobble-free bracing of these two parts to one another.
  • the clamping bolt 16 has very little or no radial freedom of movement in the second bore 20 of the coupling projection 22.
  • the coupling pin 16 in the first bore 18 of the connection plate 8 in the longitudinal direction of the sprayer has so much radial clearance 42 on its rear side that the rear flange face 36 of the rear housing part 32 can be moved against the end face 38 of the compressed air cylinder 10 pointing in the spray direction 4 and can be clamped thereon when an air pressure is generated in the compressed air chamber 14, which urges the tensioning piston 12 from the unlocking position shown in FIG. 1 against the spray direction 4 into the locking and tensioning position shown in FIG. 2.
  • the compressed air cylinder 10 is open on its end face facing the carrier 6.
  • the compressed air chamber 14 is located on the end facing away from it the cylinder 10 and the piston 12. In this case, the tensioning piston 10 presses on the coupling pin 16 as shown in FIG.
  • Several supply lines are required for the operation of the spray device 2.
  • One of them is always a material supply line 60.
  • Further supply lines are a compressed air line 62 for supplying compressed air to the compressed air chamber 14, an atomizing air line 64 for supplying compressed air for atomizing the coating material at an atomizing nozzle 66 at the downstream end of the spraying device 2, and one third compressed air line 68 is provided for the supply of compressed air, which is directed via horn-like projections 70 on the atomizing nozzle 66 in the form of air jets 72 onto the atomized coating material jet 4 in order to give it a flattened jet shape.
  • a fourth compressed air line 74 is used to supply compressed air to a second compressed air chamber 76 for actuating one Valve piston 78.
  • a fifth compressed air line 80 for compressed air for washing around high-voltage electrodes can be provided for the electrostatic charging of the coating material, and an electrical line (not shown) for supplying electrical voltage can be provided.
  • the electrical line can be a high-voltage line for supplying high voltage for the high-voltage electrodes.
  • the spray device 2 can contain its own high-voltage generator, in which case the electrical line can be a low-voltage line.
  • the valve actuating piston 78 is arranged in the middle housing part 30 in a second compressed air cylinder 82 axially to the first compressed air cylinder 10 and can be moved by means of compressed air in a second compressed air chamber 76 against an axially arranged compression spring 86 from the valve open position shown in FIG. Closed position.
  • the valve piston 78 is moved back into the valve closed position shown in FIG. 1 by the compression spring 86.
  • a valve body 88 is axially attached to the valve actuating piston 78 and cooperates with a valve seat, not shown, which is located in the flow path of a coating material channel 90.
  • All supply lines 60, 62, 64, 68, 74, 80 of the spray device 2 extend parallel to the longitudinal axis 24 of the spray device through the support 6 and are inserted into corresponding channels of the spray device 2.
  • the longitudinal axis of the sprayer 24 is aligned with the spray direction 4 and is at the same time the central axis of the mechanical quick coupling device 16, 18, 20, 22, 26 .
  • the spray device 2 can be quickly connected to the carrier 6 and all supply lines and disconnected therefrom in a simple manner.
  • the entire sprayer can be replaced with a clean one. It is no longer necessary to interrupt the coating operation in order to clean the spray device on the carrier 6. It can also be easier and faster to replace the sprayer 2 with another when replacing wear parts, such as the atomizing nozzle 66, so that the coating operation is only interrupted for a very short time while there is sufficient time to work on the dismantled sprayer Exchange wear parts.
  • receiving bores are formed in the sprayer, of which only a first receiving bore 92 for the coating material line 60 and a second receiving bore 94 for the third compressed air line 68 are shown in FIG. 1.
  • these receiving bores 92 and 94 etc. form receptacles into which the downstream line ends 93 and 95 of the supply lines 60 and 68 etc. serving as plugs are inserted.
  • the spraying device 2 When the compressed air of the first compressed air chamber 14 for the tensioning piston 12 is switched off, for example at the end of a working day, the spraying device 2 continues to run the mechanical quick connection device 16, 18, 20, 22, 26 held on the carrier 6. Because of the unavoidable freedom of movement between the individual elements, however, the sprayer 2 can now wobble relative to the carrier 6 and, for example, around a movement gap 96 in FIG. 1, which is formed between the front side of the coupling bolt 16 and the opposite front side of the first coupling bore 18 in the carrier 6 , move away from carrier 6. This creates a corresponding gap between the adjacent end faces 36 and 38 of the compressed air cylinder 10 and the flange part 34.
  • This gap corresponding to the range of motion 96 also forms between the downstream end face 97 of the coating material line 60 and an annular channel shoulder 98 lying opposite it, which is formed between the receiving bore 92 and the coating material channel 90 and against which the line end face 97 fits tightly when the tensioning piston 12 the sprayer 2 clamps against the carrier 6. So that when the compressed air of the first compressed air chamber 14 is switched off, no space can arise between the end face 97 at the downstream end of the coating material line 60 and the channel shoulder 98, a compression spring 100 is clamped between the carrier 6 and a shoulder 102 of the coating material line 60 opposite it.
  • This second compression spring 100 pushes the coating material line 60 forward through the carrier 6 into the receiving bore and thereby keeps the end face 98 of the coating material line 60 in contact with the channel shoulder 98 of the coating material channel 90 even when the compressed air acting on the tensioning piston 12 is switched off.

Landscapes

  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Spray Control Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP95104365A 1994-05-09 1995-03-24 Dispositif de fixation d'un dispositif de pulvérisation Expired - Lifetime EP0681872B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4416311A DE4416311A1 (de) 1994-05-09 1994-05-09 Sprühgerät-Befestigungsvorrichtung
DE4416311 1994-05-09

Publications (3)

Publication Number Publication Date
EP0681872A2 true EP0681872A2 (fr) 1995-11-15
EP0681872A3 EP0681872A3 (fr) 1997-12-17
EP0681872B1 EP0681872B1 (fr) 1999-10-27

Family

ID=6517666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104365A Expired - Lifetime EP0681872B1 (fr) 1994-05-09 1995-03-24 Dispositif de fixation d'un dispositif de pulvérisation

Country Status (6)

Country Link
US (1) US5624075A (fr)
EP (1) EP0681872B1 (fr)
JP (1) JPH0838963A (fr)
AT (1) ATE185984T1 (fr)
CA (1) CA2148183C (fr)
DE (2) DE4416311A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060058A1 (fr) * 2007-11-07 2009-05-14 Itw Oberflächentechnik Gmbh Connexion d'une tête de pulvérisation à un bras de robot

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646277A1 (de) 1996-11-09 1998-05-14 Itw Oberflaechentechnik Gmbh Sprühbeschichtungseinrichtung
DE19650781A1 (de) * 1996-12-06 1998-06-10 Itw Oberflaechentechnik Gmbh Sprühbeschichtungseinrichtung
DE19654514A1 (de) * 1996-12-27 1998-07-02 Itw Oberflaechentechnik Gmbh Sprühbeschichtungseinrichtung
US6213412B1 (en) * 1997-09-08 2001-04-10 Uni-Mist, Inc. Spray head assembly for lubricants, coolants and the like
DE10142074A1 (de) * 2001-08-29 2003-04-10 Itw Oberflaechentechnik Gmbh Spritzbeschichtungseinrichtung
DE102006019363B4 (de) * 2006-04-21 2011-06-01 Krautzberger Gmbh Schnellwechseladapter und Spritzapparat zur Montage auf einem Schnellwechseladapter
US11400477B2 (en) 2018-01-30 2022-08-02 Ford Motor Company Reversible nozzle in ultrasonic atomizer for clog prevention
DE102018108786B4 (de) * 2018-04-13 2022-01-05 Ulrich Oerter Halteanordnung für einen elektrostatischen Rotationszerstäuber
DE102022212337A1 (de) 2022-11-18 2024-05-23 Robert Bosch Gesellschaft mit beschränkter Haftung Schnittstellenvorrichtung, autonomes oder manuelles Arbeitsgerät und System

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132669A (ja) * 1983-12-20 1985-07-15 Tokico Ltd 塗装ガンの着脱装置
US4660771A (en) * 1983-09-27 1987-04-28 Sames S.A. Electrostatic painting apparatus
EP0310358A2 (fr) * 1987-09-28 1989-04-05 Illinois Tool Works Inc. Pistolet-pulvérisateur pour utilisation avec un robot
EP0446963A1 (fr) * 1987-10-23 1991-09-18 Grafotec Kotterer Gmbh Dispositif pour déposer une bande de liquide sur au moins une bande de matériau en mouvement

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US3653599A (en) * 1970-05-19 1972-04-04 Speco Inc Fluid spray apparatus
DE2446022C3 (de) * 1974-09-26 1985-10-24 ESB Elektrostatische Spritz- und Beflockungsgesellschaft G.F. Vöhringer GmbH, 7758 Meersburg Vorrichtung zum elektrostatischen Beschichten von Gegenständen mit flüssigem oder pulverförmigem Beschichtungsmaterial
DE2525761A1 (de) * 1975-06-10 1976-12-23 Gutmann Ges Fuer Maschinenbau Vorrichtung zum strahlen von grossraeumigen und grossflaechigen werkstuecken
US4125035A (en) * 1977-02-09 1978-11-14 Dooley Richard Anthony Control mechanism for spray guns and the like
NL161688C (nl) * 1977-09-01 1980-03-17 Ferro Bv Inrichting voor het aanbrengen van een bekleding op voor- werpen, in het bijzonder hol gevormde voorwerpen.
US4275838A (en) * 1977-09-12 1981-06-30 Ransburg Corporation Rotating atomizing device
CH623489A5 (fr) * 1977-12-08 1981-06-15 Gema Ag
DE2904867A1 (de) * 1979-02-09 1980-08-21 Gewerk Eisenhuette Westfalia Steckkupplung fuer mehradrige hydraulische kabel
FR2448392A1 (fr) * 1979-02-12 1980-09-05 Vilbiss Toussaint De Dispositif automatique pour la projection de produits de revetement
SU966385A1 (ru) * 1980-11-12 1982-10-15 Предприятие П/Я В-2141 Быстроразъемное соединение трубопроводов
JPS58137592A (ja) * 1982-02-08 1983-08-16 トヨタ自動車株式会社 工具交換装置付き産業用ロボツトおよびそのロボツトを用いた溶接方法
DE3247784C1 (de) * 1982-12-23 1984-06-14 Weh, Erwin, 7918 Illertissen Steckkupplung zur druckdichten Verbindung einer Druckleitung mit einer druckmittelbetaetigten Vorrichtung
US4613082A (en) * 1984-07-06 1986-09-23 Champion Spark Plug Company Electrostatic spraying apparatus for robot mounting
DE3431253A1 (de) * 1984-08-24 1986-03-06 Bayrisches Druckgußwerk Thurner GmbH & Co KG, 8015 Markt Schwaben Vorrichtung zum benetzen von formoberflaechen mit einer fluessigkeit
DE3510329A1 (de) * 1984-12-08 1986-06-12 Alois 7580 Bühl Wörner Werkzeug, insbesondere spritzgiessform
JPH053233Y2 (fr) * 1986-09-10 1993-01-26
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US4906123A (en) * 1988-03-02 1990-03-06 Wes-Tech, Inc. Quick changecoupling system for robotic attachments
JPH04504752A (ja) * 1990-02-02 1992-08-20 エタブリスマン・カイロウ 二つの同軸管の固定装置
US5092364A (en) * 1991-06-20 1992-03-03 Perfecting Services, Inc. Quick-action fluid coupling
JPH06262468A (ja) * 1993-03-05 1994-09-20 Yamaha Motor Co Ltd 工具保持装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660771A (en) * 1983-09-27 1987-04-28 Sames S.A. Electrostatic painting apparatus
JPS60132669A (ja) * 1983-12-20 1985-07-15 Tokico Ltd 塗装ガンの着脱装置
EP0310358A2 (fr) * 1987-09-28 1989-04-05 Illinois Tool Works Inc. Pistolet-pulvérisateur pour utilisation avec un robot
EP0446963A1 (fr) * 1987-10-23 1991-09-18 Grafotec Kotterer Gmbh Dispositif pour déposer une bande de liquide sur au moins une bande de matériau en mouvement

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* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 287 (C-314), 14.November 1985 & JP 60 132669 A (TOKICO KK), 15.Juli 1985, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060058A1 (fr) * 2007-11-07 2009-05-14 Itw Oberflächentechnik Gmbh Connexion d'une tête de pulvérisation à un bras de robot

Also Published As

Publication number Publication date
DE4416311A1 (de) 1995-11-16
US5624075A (en) 1997-04-29
ATE185984T1 (de) 1999-11-15
CA2148183C (fr) 1998-10-06
EP0681872B1 (fr) 1999-10-27
EP0681872A3 (fr) 1997-12-17
JPH0838963A (ja) 1996-02-13
DE59507116D1 (de) 1999-12-02
CA2148183A1 (fr) 1995-11-10

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