EP3641947B1 - Sprühdüse für ein sprühwerkzeug - Google Patents

Sprühdüse für ein sprühwerkzeug Download PDF

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Publication number
EP3641947B1
EP3641947B1 EP18773337.3A EP18773337A EP3641947B1 EP 3641947 B1 EP3641947 B1 EP 3641947B1 EP 18773337 A EP18773337 A EP 18773337A EP 3641947 B1 EP3641947 B1 EP 3641947B1
Authority
EP
European Patent Office
Prior art keywords
spray nozzle
dosing
venting
piston
deaeration
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.)
Active
Application number
EP18773337.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3641947A1 (de
Inventor
Björn Wollin
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.)
Wollin GmbH
Original Assignee
Wollin 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 Wollin GmbH filed Critical Wollin GmbH
Priority to SI201830200T priority Critical patent/SI3641947T1/sl
Priority to PL18773337T priority patent/PL3641947T3/pl
Publication of EP3641947A1 publication Critical patent/EP3641947A1/de
Application granted granted Critical
Publication of EP3641947B1 publication Critical patent/EP3641947B1/de
Active 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
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/047—Deformable containers producing the flow, e.g. squeeze bottles characterised by the outlet or venting means
    • 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
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber
    • 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1681—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, sliding valve or cock and a lift valve
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve
    • B05B1/302—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve with a ball-shaped valve member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0413—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with reciprocating pumps, e.g. membrane pump, piston pump, bellow pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • 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
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/531—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using backflow
    • B05B15/534—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using backflow by reversing the nozzle relative to the supply conduit

Definitions

  • the invention relates to a spray nozzle for a spray tool for spraying a release agent into a casting mold according to the preamble of claim 1.
  • Such a spray nozzle is in the DE 10 2008 035 632 B4 described.
  • the spray nozzle has a dosing chamber in a nozzle housing, into which a separating agent can be introduced, wherein the volume of the dosing chamber can be changed via an ejector piston.
  • the ejector piston When the ejector piston is actuated, the separating agent is displaced from the metering chamber and guided via a discharge channel to a nozzle body which is provided with an outwardly open cup in which spray air is fed to the separating agent before it is discharged.
  • a venting channel opens into the dosing space, which is used to vent a volume of gas in the dosing space.
  • the DE 23 18 713 A1 discloses a metering pump with automatic venting.
  • the metering pump consists of a pump housing with a bellows displacement body, the volume of which changes periodically, a suction valve, an adjustable outlet valve and a vent valve.
  • a suction valve to vent the metering pump, when the vent valve is open, the liquid to be metered is sucked in from a storage container via the suction valve. Air bubbles that are carried along are discharged into the environment through the vent valve.
  • a pump with a pump piston is known, during the movement of which fluid is conveyed between an inlet and an outlet.
  • a vent valve is also located between the inlet and the outlet, the opening state of which depends on the direction of movement of the pump piston.
  • a further pump with a ventilation unit is known.
  • the pump has a pump piston, during the movement of which fluid is conveyed.
  • the ventilation unit comprises a spring-loaded ventilation piston, which is opened by the pressure of the pump piston against the force of the spring element.
  • the invention is based on the object of effectively venting a spray nozzle for a spray tool with simple measures.
  • the spray nozzle according to the invention which is used in a spray tool for applying a release agent into a cavity or a surface of a casting mold, has a dosing chamber in a nozzle housing into which a release agent, for example oil, can be introduced.
  • the volume of the dosing space can be changed via a dosing member of the spray nozzle, a reduction in volume of the dosing space causing a displacement of the separating agent, in particular the same volume, from the dosing space.
  • the metering member is designed as a metering or ejector piston which can perform an adjusting movement in the direction of its piston longitudinal axis.
  • the separating agent displaced from the metering chamber by the adjusting movement of the metering member is guided in regular, orderly operation via a discharge channel to a nozzle body, via which the separating agent is discharged from the nozzle housing.
  • a spray agent is supplied to the separating agent, in particular spray air, in order to apply the separating agent from the nozzle body in a spray mist.
  • An active ventilation unit is integrated into the spray nozzle, which is used to vent the metering space and, if necessary, the discharge channel connected to the metering space.
  • the Ventilation is required if there is accumulation of air in the metering room or in the discharge channel, which prevents or at least makes it difficult for the release agent to be expelled. Due to the compressibility of the air in the dosing chamber, the adjusting movement of the dosing member is not or only partially converted into a displacement movement of the separating agent. For proper functioning, ventilation is therefore required in the event that air has accumulated in the dosing chamber.
  • the ventilation takes place via the active ventilation unit by applying an actuation variable to the ventilation unit, whereupon the ventilation unit is automatically adjusted from an inoperative position into a ventilation and opening position.
  • the venting unit or a component actuated by the venting unit is moved into the venting and opening position by the separating agent when the spray nozzle is working properly without air accumulation in the dosing chamber, so that the separating agent can pass through the deaerating unit.
  • the venting unit or a component actuated by the venting unit can be automatically adjusted to the venting and opening position in which the dosing space is vented by applying the actuation variable.
  • the venting unit is moved back from the venting and opening position to the non-functional position, whereupon the correct functionality of the spray nozzle is restored and regular operation of the spray nozzle can be resumed.
  • the ventilation unit is acted upon by the actuation variable, the carrier of the Adjustment energy for transferring the ventilation unit from the non-functional position to the ventilation and opening position and controls the movement of the ventilation unit.
  • the transfer in the opposite direction - from the venting to the inoperative position - takes place either in an active manner by applying the actuation variable to the venting unit or in a passive manner by using a force that acts permanently on the venting unit and acts on it in the direction of the inoperative position, for example the spring force of a spring element or the weight of the ventilation unit or some other component that acts on the ventilation unit.
  • the adjustment of the ventilation unit from the non-functional position to the ventilation and opening position is carried out by the actuation variable opposite to the restoring force acting in the direction of the non-functional position.
  • the venting of the spray nozzle is either triggered manually by manually adjusting the actuation quantity so that the venting unit moves from the inoperative to the venting and opening position.
  • an automatic adjustment movement of the venting unit from the non-functional position to the venting and opening position can also be considered, in that a system variable is monitored by sensors, for example the pressure of the separating agent in the area of the nozzle body or in the discharge channel, and the venting unit, depending on the size of the system is adjusted automatically by applying the actuation variable.
  • a possible system variable is, for example, optical monitoring of the spraying of the release agent from the nozzle body, the venting unit being actuated if it is determined optically that the release agent is not sprayed out or not sprayed in the desired manner.
  • the actuation variable of the venting unit is identical to the actuation variable of the dosing member that is used to change the volume of the dosing chamber and to expel the separating agent from the dosing chamber.
  • the actuation variable is, for example, pressurized control air with which both the metering member and the venting unit are acted upon. It is possible to supply the control air for the metering element and the ventilation unit to the spray nozzle via a common control air line. Alternatively, it is also possible to supply control air for the metering element and control air for the ventilation unit via separate control air lines.
  • the control air is under pressure, with only the metering member being adjusted below a compressed air threshold value and both the metering member and the venting unit being adjusted above a compressed air threshold value.
  • a lower compressed air threshold value and a higher, upper compressed air threshold value which are, for example, 6 bar and 8 bar, with only the metering member below the lower compressed air threshold value and both the metering member and the metering member above the upper compressed air threshold value Venting unit can be adjusted.
  • This procedure has the advantage that in regular operation with the venting unit in the non-functional position, the metering element is actuated via the application of compressed air with a control pressure that corresponds to the lower compressed air threshold, whereas for venting only the pressure of the control air on the upper compressed air Threshold must be increased in order to move the ventilation unit to the venting and opening position adjust. Due to the pressure difference between the lower and upper compressed air threshold value, a safety margin is guaranteed and accidental, unintended activation of the ventilation unit is excluded.
  • actuation variables for the ventilation unit are also possible.
  • the actuation variable can, for example, also be an electrical current with which an electrical ventilation unit, for example designed as an electromagnetic actuator, is applied.
  • the dosing member can optionally also be designed to be electrically actuatable.
  • hydraulic actuation of the venting unit and / or the dosing element can be considered.
  • the same actuation variable is advantageously used for the dosing member and the venting unit.
  • a non-return valve is arranged in the discharge channel, which is a component that can be actuated by the venting unit for venting and can be adjusted by the venting unit from a blocking position into an open position.
  • the check valve thus remains in the open position for the duration of the venting, in which the air in the metering chamber and any separating agent that may have remained are expelled from the metering chamber via the discharge channel and the nozzle body. Even during regular operation of the spray nozzle, in which the ventilation unit is in the non-functional position, the check valve is moved into the open position when the release agent is expelled. After completion of the ejection process - both in regular operation and during venting - the non-return valve returns to the blocking position in which the discharge channel is blocked.
  • the non-return valve comprises a non-return ball which is arranged in the discharge channel and can be adjusted in the discharge channel between the blocking and opening positions.
  • the ventilation unit is designed as a ventilation piston which is axially adjustable along its longitudinal axis between the non-functional position and the ventilation and opening position.
  • the vent piston is in the axially retracted inoperative position.
  • the vent piston With the actuation of the vent piston, in particular by control air, the pressure of which is above an upper compressed air threshold value, the vent piston is moved axially from the inoperative position into the venting and opening position and pushes the check valve, in particular the check ball, from the blocking position into the opening position that the check valve maintains for the duration of the venting.
  • the actuation of the venting piston is advantageously stopped, whereupon the venting piston returns to the inoperative position, for example due to its own weight. It it is also possible to move the bleeding piston into the non-functional position by spring force. Furthermore, it is possible to carry out the actuation in such a way that the ventilation piston returns to the inoperative position in order to end the ventilation.
  • a bypass is opened manually in order to ventilate the dosing chamber.
  • the dosing volume of the dosing space can be adjusted with the aid of an adjusting element which is designed, for example, as an adjusting screw that is screwed into the housing and can be adjusted from the outside.
  • the end face of the adjusting screw forms a contact and support surface for the metering member, the starting position of which depends on the position of the adjusting screw.
  • the volume of the dosing chamber is changed when the adjusting element is actuated.
  • FIGs. 1 and 2 is a perspective view of a spray nozzle for spraying a release agent, such as oil, in the Cavity or on the surface of a mold.
  • the spray nozzle 1 which can be part of a spray tool, has a nozzle housing 2 from which a nozzle body 3 protrudes, which is designed as a ball nozzle body and is mounted in a corresponding ball joint in the nozzle housing 2, whereby the ball nozzle body 3 rotates around up to three axes of rotation can perform.
  • the release agent is sprayed out via the nozzle body 3 in the form of a spray mist in the exit direction 4.
  • spray air is introduced via an inlet opening 5, which air is mixed with the separating agent to generate a spray mist which exits via the nozzle body 3.
  • the mixing of the spray air and the separating agent takes place either in an outwardly open cup 18 in the nozzle body 3 or already upstream of the nozzle body 3 in a line 19 via which the separating agent is fed to the nozzle body 3.
  • Separating agent is introduced into the interior of the nozzle housing 2 via a further inlet opening 6.
  • two further inlet openings 7 and 8 are arranged, via which control air is introduced into the spray nozzle 1, which is under pressure and is used to control the movement of a dosing element for changing the volume of the release agent to be ejected and to control the movement of a ventilation unit in the spray nozzle.
  • FIGS. 4 and 5 are a sectional view along the line AA from FIG Fig. 3 and show a longitudinal section through the nozzle housing 2 of the spray nozzle 1.
  • a dosing member 9 is shown in the nozzle housing 2, which is shown in FIG Fig. 4 in the Starting position and in Fig. 5 is shown in the displacement position and is used to displace the release agent from a metering chamber 10 via a discharge channel 11 to the nozzle body 3.
  • the dosing member 9 is designed as a dosing piston 9, the piston tip of which delimits the dosing chamber 10, so that an axial displacement - based on the piston longitudinal axis - of the dosing piston 9 to reduce the volume of the dosing chamber 10 and correspondingly to a release agent displacement of the same volume from the dosing chamber 10 in the direction of the nozzle body 3 leads.
  • the metering piston 9 is mounted in an axially displaceable manner in a working space 12 in the nozzle housing 2. In the area above the dosing piston 9, control air, which is under a working or control pressure of 6 bar, for example, is passed into the working chamber 12, whereupon the dosing piston 9 executes a working movement from the starting position Fig.
  • the volume of the dosing chamber 10 can be adjusted using an adjusting screw 21 ( Fig. 4 ), which forms an actuator.
  • the adjusting screw 21 can be adjusted from the outside, so that the position of the adjusting screw 21 in the housing changes.
  • the end face of the adjusting screw 21 forms a contact and support surface for the metering piston 9, the starting position of which depends on the position of the adjusting screw 21.
  • FIGS 7 and 8 show a further section through the spray nozzle 1 along the section line BB Fig. 6 .
  • the section is opposite to the sectional view of Figs. 3 to 5 offset at an angle.
  • a ventilation unit 14 is shown, which is used to vent the metering chamber 10 and possibly also the discharge channel 11 in the event that air has accumulated in the metering chamber 10 or in the discharge channel 11.
  • regular operation of the spray nozzle with spraying of release agent is not possible, since due to the high compressibility of the air in the dosing chamber, the movement of the dosing piston 9 does not lead to an ejection of the release agent, but essentially only to a compression of the gas volume.
  • the ventilation unit 14 is designed as a ventilation piston which is arranged in the nozzle housing 2 offset from the metering piston, the longitudinal axes of the metering piston and the ventilation piston 14 running parallel to one another.
  • the vent piston 14 is between the in Fig. 7 inoperative position shown and the in Fig. 8 shown venting and opening position axially adjustable.
  • the tip of the venting piston 14 faces a check valve 15 in the form of a check ball, which is arranged in a section 11a of the discharge channel 11 in the flow path of the separating agent from the dosing chamber 10 to the nozzle body 3.
  • the non-return ball 15 is adjustable between a blocking position and an opening position, whereby in the blocking position ( Fig. 7 ) prevents the release agent or air from flowing out through the discharge duct 11 and is in the open position ( Fig. 8 ) is enabled.
  • the working movement of the dosing piston 9 causes the separating agent to flow via the discharge channel 11 and the nozzle body 3 pushed out.
  • the non-return ball 15 is out of the blocking position according to Fig. 7 in the opening position according to Fig. 8 raised.
  • the open position is above the locked position.
  • the non-return ball 15 is spring-actuated and returns from the open position to the locked position.
  • the ventilation piston 14 In the regular operating mode, the ventilation piston 14 is in the retracted starting position according to FIG Fig. 7 , in which the ventilation piston 14 has no influence on the movement of the check ball 15.
  • the vent piston is raised, as a result of which the tip of the vent piston presses the check ball 15 from the blocking position into the opening position in which the flow path through the discharge channel 11 is released.
  • the free volume of the metering chamber 10 is reduced and the air contained in the metering chamber 10 and possibly in the discharge channel 11 is expelled via the now open discharge channel 11 and the nozzle body 3.
  • the venting process is ended when the dosing piston 9 returns to its starting position and the venting piston 14 returns to its inoperative position.
  • the lifting of the vent piston 14 from the inoperative position according to FIG Fig. 7 into the venting and opening position according to Fig. 8 takes place with the help of the control air.
  • the venting piston 14 is displaceably mounted in a working space 16 in the nozzle housing 2.
  • Control air can be introduced into the area of the working space 16 on the underside of the venting piston 14, which causes the Breather piston 14 caused from the inoperative position in the vent and open position.
  • the increase in the ventilation piston 14 depends on the level of the pressure of the control air on the underside of the ventilation piston.
  • the control air must advantageously reach or exceed an upper compressed air threshold value of 8 bar, for example, so that the venting piston 14 is raised.
  • This compressed air threshold value lies in particular above the regular pressure of 6 bar, for example, with which the metering piston 9 is acted upon against the force of the spring element 13 in regular operation.
  • the pressure difference between the regular control pressure for normal operation of the spray nozzle (lower compressed air threshold value) and the increased, upper compressed air threshold value for lifting the vent piston 14 into the venting and opening position ensures that the vent piston 14 in its inoperative position below remains.
  • venting piston 14 Even in regular operation, the underside of the venting piston 14 is acted upon with a control pressure which, however, is not high enough to lift the venting piston and move it into the venting and opening position. Only when the upper compressed air threshold value is exceeded is the venting piston 14 moved into the venting and opening position.
  • FIG. 3 is a section through the spray nozzle 1 along the section line MM from FIG Fig. 9 and in Fig. 11 a section through the spray nozzle 1 according to section line NN Fig. 9 shown.
  • the cuts are through the inlet opening 6 for the release agent ( Fig. 10 ) or the inlet opening 7 for the control air ( Fig. 11 ) placed.
  • the separating agent is passed into the metering chamber 10 via the inlet opening 6 via a check valve 17.
  • the control air is passed via the inlet opening 7 - and via the further inlet opening 8 - into the working space 12 above the metering piston 9 and into the working space 16 below the venting piston 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Nozzles (AREA)
  • Casting Devices For Molds (AREA)
EP18773337.3A 2017-09-14 2018-09-11 Sprühdüse für ein sprühwerkzeug Active EP3641947B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201830200T SI3641947T1 (sl) 2017-09-14 2018-09-11 Pršilna šoba za pršilno orodje
PL18773337T PL3641947T3 (pl) 2017-09-14 2018-09-11 Dysza rozpylająca do narzędzia rozpylającego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017121274.4A DE102017121274B3 (de) 2017-09-14 2017-09-14 Sprühdüse für ein Sprühwerkzeug
PCT/DE2018/100767 WO2019052601A1 (de) 2017-09-14 2018-09-11 Sprühdüse für ein sprühwerkzeug

Publications (2)

Publication Number Publication Date
EP3641947A1 EP3641947A1 (de) 2020-04-29
EP3641947B1 true EP3641947B1 (de) 2020-11-04

Family

ID=63667665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18773337.3A Active EP3641947B1 (de) 2017-09-14 2018-09-11 Sprühdüse für ein sprühwerkzeug

Country Status (9)

Country Link
US (1) US11161131B2 (hu)
EP (1) EP3641947B1 (hu)
KR (1) KR102277390B1 (hu)
DE (1) DE102017121274B3 (hu)
ES (1) ES2847415T3 (hu)
HU (1) HUE053580T2 (hu)
PL (1) PL3641947T3 (hu)
SI (1) SI3641947T1 (hu)
WO (1) WO2019052601A1 (hu)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202023104212U1 (de) 2023-07-27 2023-08-24 Wollin Gmbh Sprühdüse für ein Sprühwerkzeug

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WO2019052601A1 (de) 2019-03-21
DE102017121274B3 (de) 2019-02-21
US11161131B2 (en) 2021-11-02
EP3641947A1 (de) 2020-04-29
KR102277390B1 (ko) 2021-07-14
US20200206762A1 (en) 2020-07-02
KR20200052365A (ko) 2020-05-14
HUE053580T2 (hu) 2021-07-28
SI3641947T1 (sl) 2021-07-30
PL3641947T3 (pl) 2021-06-28

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