EP4366882A1 - Verfahren zum ausbringen einer flüssigkeit mittels einer düsenvorrichtung - Google Patents
Verfahren zum ausbringen einer flüssigkeit mittels einer düsenvorrichtungInfo
- Publication number
- EP4366882A1 EP4366882A1 EP21786084.0A EP21786084A EP4366882A1 EP 4366882 A1 EP4366882 A1 EP 4366882A1 EP 21786084 A EP21786084 A EP 21786084A EP 4366882 A1 EP4366882 A1 EP 4366882A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- outlet opening
- air flow
- fst
- luf
- 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
Links
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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
-
- 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
- B05B7/0861—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 one single jet constituted by a liquid or a mixture containing a liquid and several gas jets
-
- 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
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
-
- 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
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
Definitions
- the invention relates to a method for dispensing a liquid using a nozzle device.
- Such nozzle devices are used, for example, in the vehicle industry, with an agent for sealing weld seams preferably being applied as the liquid.
- the nozzle device is mounted on a lance, with the lance being designed as a robot arm.
- An important requirement in the automotive industry is that the application is quick and reliable.
- the object of the invention is to specify a method that develops the prior art.
- a method for dispensing a liquid by means of a nozzle device having a nozzle head and a nozzle body.
- the nozzle head has a liquid outlet opening and at least one air outlet opening laterally spaced apart from the liquid outlet opening.
- an air stream is emitted through the air outlet opening while the liquid jet is being dispensed.
- the air flow hits the jet of liquid at a distance after exiting the liquid outlet opening.
- the jet of liquid is fanned out by the air flow.
- the jet of liquid is fanned out exclusively by means of the air flow.
- the liquid jet is formed as a jet even at a distance of between 0.5 m and 2 m from the nozzle device.
- the nozzle head and the nozzle body are preferably formed in one piece. In an alternative embodiment, the nozzle head and the nozzle body are designed in two pieces.
- the air outlet opening and the liquid outlet opening are each designed to be round.
- the nozzle head preferably has a truncated cone-shaped design and the nozzle body has a cylindrical design.
- the nozzle device has or amounts to a diameter of between 6 mm and 20 mm or between 8 mm and 14 mm
- the length of the nozzle device is in a range between 10 mm and 30 mm or between 15 mm and 25 mm or is 20 mm.
- the liquid outlet opening is arranged centrally, while the air outlet opening is formed at a lateral distance on the lateral surface of the nozzle head.
- the nozzle head and the nozzle body are preferably made of a metal or an alloy.
- the air outlet opening is round.
- One advantage of the method is that it is easy to switch back and forth between a spray jet in the first method step and a spray jet in the second method step. In other words, to achieve a spray jet, a stream of air is simply emitted through the air outlet and vice versa. This makes it possible to switch between a spray jet and a spray jet at any time, even while the method is being used.
- switching between the two method steps can be carried out instantaneously. In other words, the Switching between the two process steps can be carried out without delay.
- One advantage is that it is possible to switch between the first method step and the second method step as often as you like while the liquid is being dispensed, ie when it is being used.
- a first switching device and a second switching device are provided, the liquid jet being switched on and off by means of the first switching device and the air flow being switched on and off by means of the second switching device.
- the air flow is switched on or off.
- the air flow is only switched on or off when the liquid jet is switched on.
- the air outlet opening is designed to be round.
- the diameter of the air outlet opening is in a range between 0.2 mm and 0.6 mm.
- the diameter of the air outlet opening is preferably 0.4 mm.
- the multiple air streams meet the liquid jet at the same distance, i.e. the air streams meet at a "focal point".
- each air outlet opening within the nozzle device has a separate air supply in the form of a round supply channel.
- the diameter of the supply channel preferably corresponds to the diameter of the air outlet opening.
- all air outlet openings have the same diameter.
- between three and a maximum of fifteen or exactly six air outlet openings are provided, with the air outlet openings preferably being arranged symmetrically around the liquid outlet opening, so that the liquid jet in the second method step is struck by each air flow through the respective air outlet openings at the same distance.
- the diameter of the liquid outlet opening is in a range between 0.1 mm and 1 mm or in a range between 0.1 mm and 0.5 mm, or preferably the diameter of the liquid outlet opening is 0.2 mm.
- a pressure of between 5 bar and 160 bar or between 10 bar and 120 bar or a pressure of 70 bar is applied to generate the liquid jet.
- the size of the air outlet opening is between 0.2 mm and 0.8 mm or between 0.3 mm and 0.6 mm or is 0.4 mm.
- a pressure of between 0.1 bar and 12 bar or between 0.2 bar and 15 bar or between 0.2 bar and 5 bar or a pressure of 0.4 bar is applied to generate the air flow.
- the opening angle of the point of intersection between the air flow and the liquid jet in the direction of the nozzle head is in a range of between 0.5° and 45° or in a range of between 5° and 15° or at 10°.
- the distance between the nozzle head and where the air jet impinges on the liquid jet is in a range between 0.5 cm and 30 cm or in a range between 0.5 cm and 15 cm or in a range between 1.0 cm and 10 cm or at 7 cm.
- the method is carried out at room temperature.
- the liquid jet is preferably at room temperature.
- an anti-corrosion agent is used as the liquid.
- a laminar air flow or a turbulent air flow is generated by changing the pressure of the air flow.
- liquid jet and the air flow are preferably each laminar at or shortly after the respective outlet opening.
- the liquid jet is fanned out conically by means of the air flow and becomes a spray jet.
- the fanning out has an opening angle of between 2° and 45°.
- the method is used in particular to seal seams in metallic body parts.
- FIG. 1 shows a view of a liquid jet according to the first method step and a spray jet according to the second method step
- FIG. 2 shows a cross-sectional view of a nozzle device according to the invention.
- FIG. 1 shows a view of a nozzle device DV with a lance part LT.
- a jet of liquid FST is emitted by means of the nozzle device DV.
- the liquid jet FST has an almost constant diameter, i.e. it is laminar.
- an air flow LUF is emitted while the liquid jet FST is being dispensed.
- the liquid jet FST is fanned out to form a spray jet SPT by means of the output of the air stream LUF, which meets the liquid jet FST at a distance D1.
- FIG. 2 shows a cross-sectional view of the nozzle device DV, illustrated in connection with the illustration in FIG. 1. Only the differences from the features explained in connection with FIG. 1 are listed below.
- the nozzle device DV includes a nozzle head DUK and a nozzle body DKO.
- the nozzle head DUK essentially has the shape of a truncated cone.
- the nozzle body DKO has a cylindrical shape.
- the nozzle device DV preferably has a length L of 20 mm and a diameter of 10 mm.
- the nozzle device DV is formed in one piece from a metal.
- the liquid outlet opening FLO is formed in the middle, ie centrally, on the nozzle head DUK.
- the air outlet openings LUO are laterally spaced from the liquid opening FLO on the lateral surface of the nozzle head DUK trained.
- Each air outlet opening LUO has its own air duct LUK.
- the liquid opening FLO has a cylindrical storage chamber VK in the center of the nozzle device.
Landscapes
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2021/000109 WO2023046257A1 (de) | 2021-09-21 | 2021-09-21 | Verfahren zum ausbringen einer flüssigkeit mittels einer düsenvorrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4366882A1 true EP4366882A1 (de) | 2024-05-15 |
| EP4366882B1 EP4366882B1 (de) | 2025-05-07 |
| EP4366882C0 EP4366882C0 (de) | 2025-05-07 |
Family
ID=78073876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21786084.0A Active EP4366882B1 (de) | 2021-09-21 | 2021-09-21 | Verfahren zum ausbringen einer flüssigkeit mittels einer düsenvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4366882B1 (de) |
| CN (1) | CN118019591A (de) |
| WO (1) | WO2023046257A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE966200C (de) * | 1951-08-09 | 1957-07-11 | Bersch & Fratscher G M B H | Farbspritzpistole mit pneumatischer Farbventilsteuerung |
| DE102010056263A1 (de) * | 2010-12-24 | 2012-06-28 | Eisenmann Ag | Vorrichtung und Verfahren zum Beschichten eines Gegenstandes mit einem Medium |
| EP3265237B1 (de) * | 2015-03-05 | 2020-11-04 | Coatings Foreign IP Co. LLC | Sprühpistole mit hoher übertragungseffizienz und verfahren zur deren verwendung |
-
2021
- 2021-09-21 WO PCT/EP2021/000109 patent/WO2023046257A1/de not_active Ceased
- 2021-09-21 CN CN202180102553.6A patent/CN118019591A/zh active Pending
- 2021-09-21 EP EP21786084.0A patent/EP4366882B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023046257A1 (de) | 2023-03-30 |
| EP4366882B1 (de) | 2025-05-07 |
| EP4366882C0 (de) | 2025-05-07 |
| CN118019591A (zh) | 2024-05-10 |
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