EP3021975B1 - Elektrostatisches pulverfarbenspritzpistole mit vorrichtung für schnellen farbwechsel - Google Patents

Elektrostatisches pulverfarbenspritzpistole mit vorrichtung für schnellen farbwechsel Download PDF

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Publication number
EP3021975B1
EP3021975B1 EP14781965.0A EP14781965A EP3021975B1 EP 3021975 B1 EP3021975 B1 EP 3021975B1 EP 14781965 A EP14781965 A EP 14781965A EP 3021975 B1 EP3021975 B1 EP 3021975B1
Authority
EP
European Patent Office
Prior art keywords
paint
valve assembly
air
gun
gun 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.)
Not-in-force
Application number
EP14781965.0A
Other languages
English (en)
French (fr)
Other versions
EP3021975A1 (de
Inventor
Gunay CAFEROGLU
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.)
Tofas Turk Otomobil Fabrikasi AS
Original Assignee
Tofas Turk Otomobil Fabrikasi AS
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 Tofas Turk Otomobil Fabrikasi AS filed Critical Tofas Turk Otomobil Fabrikasi AS
Publication of EP3021975A1 publication Critical patent/EP3021975A1/de
Application granted granted Critical
Publication of EP3021975B1 publication Critical patent/EP3021975B1/de
Not-in-force 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
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1409—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet the selection means being part of the discharge apparatus, e.g. part of the spray gun
    • 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
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids

Definitions

  • the present invention relates to a design developed for reducing time loss in color change in electrostatic and conventional manual paint guns.
  • the color change times in electrostatic and conventional manual paint guns used in painting the vehicle bodies are longer than the planned time and this causes to experience delays in whole production process.
  • Air driven, anaerobic electrostatic spray application or the ones that can be used with other systems are preferred in applications to be performed on complex formed metal surface in which the overspray should be little and wet paint applications.
  • electrostatic spray applications the air around the point where the paint is sprayed is ionized by applying 50-125 kV electric current. The electrons that are released as a result of ionizing the air hold on to the surfaces of paint particles passing by this area and charge them with negative (-) charge.
  • the surface to be painted is grounded and charged with positive (+) charge. Therefore, electrostatic area is formed around the surface to be painted. In this case, negative charged paint particles are enabled to reach the surface with the electrical attraction force on the object. This electrical attraction significantly decreases spray losses that can occur due to spatter and splash. Especially it minimizes paint losses in painting objects such as pipe, profile and their rear surfaces causing spray loss.
  • Electrical conductivity of the paint should be sufficient so that the paint particles reaching the surface can transfer the charge thereon to the soil from the surface.
  • solvents or additives with high conductivity such as alcohols are added inside the product or its thinner.
  • United States Patent Document no US20100196616A1 an application known in the state of the art, discloses a robotic painting system. It is disclosed that the said robotic system two different paint metering devices and these paint metering devices are electrostatically isolated, color change time and a paint waste are minimized since the paralel fluid circuit performs process order swiftly. Furthermore, it is disclosed that color change time ranges between 6-15 seconds or 10-25% of the available cycle time per car by means of the robotic painting system.
  • United States Patent Document no US20020007788A1 an application known in the state of the art, discloses a coating apparatus to which a voltage is applied and which can be used in coating guns. It is disclosed that the coating material used in the coating apparatus enters the system via the hose and it is moved via the pistons located at the front of the system. Furthermore it is disclosed the said piston at the front side enables the color change time to be shortened since it has the ability to move fast.
  • US2005/229845 A1 discloses a nozzle assembly for a material application device including an expansion chamber for slowing down the velocity of powder fed to the nozzle from a dense phase pump and a nozzle insert that forms the expansion chamber and provides air assist function. No application has been found in the state of the art which prevents time loss during color change in manual electrostatic powder paint guns.
  • the objective of the present invention is to provide a paint gun which enables to decrease production loss caused by time during color changing.
  • the inventive paint gun (1) which minimizes time loss occurring during color change comprises
  • the trigger (3) is pushed while applying the paint, the main needle located inside the gun by (2) is pulled back and the paint is sprayed from the nozzle (4).
  • the fast connection paint inlet (10) mounted to the paint valve assembly (6) at the lower end of the gun body (2) is attached to the place where the cleaning chemical (solvent, etc.) is present.
  • the triggering button (53) in the air valve assembly (5) is pushed with the trigger (3).
  • the air valve (51) comes to open position and triggers the paint valve (61).
  • the wet paint present inside the paint valve slot (62) is discharged from the nozzle (4) and the fast connection paint discharge (11) located at the lower end of the slot (62) at the same time.
  • the paint wanted to be discharged is discharged in much shorter time than the time in the state of the art.
  • the fast connection paint inlet (10) is attached to the color of the paint wanted to be charged for the new color.
  • the trigger (3) and the triggering button (53) in the air valve assembly (5) is pushed at the same time, and the paint is discharged from the nozzle (4) until the new color comes.
  • the trigger (3) and the triggering button (53) are released when the new color comes.
  • the triggering button (53) on the air valve assembly (5) is only used during color change.
  • the air valve assembly (5) is fixed to the gun body (2) via the reduction member (54) and the fixing member (55).
  • the air valve assembly (5) there is at least one air valve (51), an elbow (52) to which the air hose (7) one end of which is connected to the fast connection elbow (12) is connected, at least one triggering button (53) which is triggered to pump air, at least one reduction member (54) and at least one fixing member (55) which enable to fix the air valve assembly (5) to the gun body (2), at least one needle (56) and at least one check valve (57).
  • the paint valve assembly (6) comprises a paint valve (61), at least one slot (62) in which the paint valve (61) is located, at least one slot fixing apparatus (63) for fixing the slot (62) to the gun body (2), and at least one connection elbow (64) to which the paint hose (9) is connected. Furthermore, there is an air hose (7) which enables the exchange of the paint valve assembly (6) and the air valve assembly (5) with each other and one end of which is connected to the paint valve (61) and the other end is connected to the connection elbow (12).
  • the color change time is decreased, and the production losses occurring during color change are avoided.

Landscapes

  • Spray Control Apparatus (AREA)
  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Claims (8)

  1. Eine Farbspritzpistole (1), welche die Zeitverlust, die während der Farbveränderung auftritt, minimiert, hauptsächlich umfassend
    - mindestens einen Pistolenkörper (2),
    - mindestens einen Auslöser (3), welcher auf dem Pistolenkörper (2) bereitgestellt ist und auf welchem Druck ausgeübt wird, um die Farbe zu spritzen,
    - mindestens eine Düse (4), aus der die Farbe auf den Auslöser (3) gedrängt wird,
    - mindestens eine Luftventilanordnung (5), welche auf dem Pistolenkörper (2) eingebaut ist,
    - mindestens ein Luftventil (51), welches in der Luftventilanordnung (5) angeordnet ist,
    - mindestens ein Winkelstück (2), welches in der Luftventilanordnung (5) angeordnet ist,
    - mindestens eine Lackventilanordnung (6), welche auf dem unteren Teil des Pistolenkörpers (2) angeordnet ist,
    - mindestens ein Lackventil (61), welches auf der Lackventilanordnung (6) angeordnet ist,
    - mindestens einen Luftschlauch (7), welcher die Luftverbindung zwischen dem Lackventil (61) und dem Winkelstück (52) bereitstellt,
    - mindestens einen Hauptkreislauf-Luftschlauch-Einlass (8), welcher an dem unteren Ende des Pistolenkörpers (2) angeordnet ist und den Lufteintritt ermöglicht,
    - mindestens einen Farbspritzschlauch (9), welcher zum oberen Ende des Lackventils (6) angeschlossen ist,
    - mindestens einen Schnellverbindung-Lackeinlass (10) und mindestens einen Schnellverbindung-Lackauslass (11), welche zur Lackventilanordnung (6) angeschlossen sind,
    - mindestens ein Schnellverbindungs-Winkelstück (12), welches die Enden des Luftschlauchs (7) verbindet, der die Verbindung von Lackventilanordnung (6) und von der Luftventilanordnung (5) auf dem Pistolenkörper (2) ermöglicht und gekennzeichnet durch
    - Luftventilanordnung (5), welche zumindest ein Luftventil (1), mindestens ein Winkelstück (2), zu dem der Luftschlauch (7), dessen ein Ende mit dem Schnellverbindungs-Winkelstück (12) verbunden ist, angeschlossen wird, mindestens einen Auslöseknopf (53), der zum Pumpen der Luft ausgelöst wird, mindestens ein Reduktions-Glied (54) und mindestens ein Befestigungselement (55), welches ermöglicht, die Luftventilanordnung (5) zum Pistolenkörper (2) anzuschliessen, mindestens eine Nadel (56) und mindestens ein Kontrollventil (57) umfasst,
    - Schnellverbindung-Lackeinlass (10), welcher an der Stelle befestigt ist, an der die Reinigungs-Chemikalie (Lösungsmittel etc.) sich während der Farbänderung existiert, welche an der Lackventilanordnung (6) an dem unteren Ende des Pistolenkörpers (2) montiert ist und welche zur Farbe des Lacks angeschlossen ist, der für die neue Farbe aufgeladen soll, nachdem die Farbe im Pistolenkörper (2) ausgeladen wurde,
    - Luftventil (51), welches zur geöffnete Stellung kommt, nachdem der Auslöseknopf (53) in der Luftventilanordnung (5) zusammen mit dem Auslöser (3) für Farbveränderung gedrückt wird und das Lackventil (61) auslöst,
  2. Eine Farbspritzpistole (1) gemäß Anspruch 1, gekennzeichnet durch die Lackventilanordnung (6), welche ein Lackventil (61), mindestens eine Aussparung (62), in der das Lackventil (61) angeordnet ist, mindestens einen Befestigungsapparat (63) für die Aussparung zum Befestigen der Aussparung (62) zum Pistolenkörper (2) und mindestens ein Verbindungs-Winkelstück (64), an dem der Farbspritzschlauch (9) angeschlossen ist.
  3. Eine Farbspritzpistole (1) gemäß Anspruch 2, gekennzeichnet durch den Schnellverbindungs-Lackauslass (11), welcher mit dem Stutzen (4) arbeitet, der sich in der Lackventil-Aussparung (62) befindet und aus welchem die wt Farbe abgeführt wird und welcher an dem unteren Ende der Aussparung (62) angeordnet ist.
  4. Eine Farbspritzpistole (1) gemäß einem der vorangehenden Ansprüche,, gekennzeichnet durch den Auslöser (3), welcher gedrückt wird, um die Oberfläche zu lackieren, die man lackieren möchte.
  5. Eine Farbspritzpistole (1) gemäß Anspruch 1, gekennzeichnet durch den Auslöser (3) sowie den Auslöseknopf (3) in der Luftventilanordnung (5), welche zum Erhalten der neuen Farbe gleichzeitig gedrückt werden, bis die neue Farbe aus dem Stutzen (4) herauskommt.
  6. Eine Farbspritzpistole (1) gemäß einem der vorangehenden Anpsrüche, gekennzeichnet durch den Ausöseknopf (53) in der Luftventilanordnung (5), auf welchen nur während der Farbänderung gedrückt wird.
  7. Eine Farbspritzpistole (1) gemäß Anspruch 1, gekennzeichnet durch das Reduktions-Glied (54) und das Befestigungselement (55), welche es ermöglichen, dass die Luftventilanordnung (5) an dem Pistolenkörper (2) befestigt wird.
  8. Eine Farbspritzpistole (1) gemäß einem der vorangehenden Ansprüche, gekennzeichnet durch den Luftschlauch (7), welcher die Auswechselung der Lackventilanordnung (6) und der Luftventilanordnung (5) gegeneinander ermöglicht und dessen ein Ende zum Lackventil (61) angeschlossen und das andere Ende zum Verbindungs-Winkelstück (12) angeschlossen wird.
EP14781965.0A 2013-07-17 2014-07-17 Elektrostatisches pulverfarbenspritzpistole mit vorrichtung für schnellen farbwechsel Not-in-force EP3021975B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201308664 2013-07-17
PCT/TR2014/000300 WO2015009265A1 (en) 2013-07-17 2014-07-17 Electrostatic powder paint gun with means for quick color change

Publications (2)

Publication Number Publication Date
EP3021975A1 EP3021975A1 (de) 2016-05-25
EP3021975B1 true EP3021975B1 (de) 2017-08-23

Family

ID=51688385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14781965.0A Not-in-force EP3021975B1 (de) 2013-07-17 2014-07-17 Elektrostatisches pulverfarbenspritzpistole mit vorrichtung für schnellen farbwechsel

Country Status (2)

Country Link
EP (1) EP3021975B1 (de)
WO (1) WO2015009265A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE791034A (fr) * 1971-11-18 1973-03-01 Ransburg Corp Appareil et procede de pulverisation
US6375094B1 (en) * 1997-08-29 2002-04-23 Nordson Corporation Spray gun handle and trigger mechanism
US7793869B2 (en) * 2003-08-18 2010-09-14 Nordson Corporation Particulate material applicator and pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3021975A1 (de) 2016-05-25
WO2015009265A1 (en) 2015-01-22

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