• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    NOZZLES WITH SLOTS.The present invention relates to a spray head that has a slit-shaped central air outlet opening and preferably a slit-shaped ink nozzle for forming a flat ink jet and a pneumatic propulsion application.
    公开号:BR112012002708A2
    申请号:R112012002708-5
    申请日:2010-07-30
    公开日:2020-08-11
    发明作者:Elmar Krayer；Alfred Goehring；Thomas Jeltsch；Jens Ulbrich
    申请人:J. Wagner Gmbh；
    IPC主号:
    专利说明:

    Patent Specification Report for "DOTA- 'DO DE RENDAS NOZZLE". The present invention relates to a spray head
    Y for generating a pIan ink jet in a 5 spray gun or an ink spray lance as claimed in the pre-characterization clause of claim 1 or a spray head as claimed in the pre-characterization clause of claim 16. According to the invention, the spray head can also be used for other pneumatic propulsion application processes that can make use of the function, according to the invention, of generating a flat jet in the spray head. pulverization. There are a number of fundamental technical principles in the field of Çgàf application processes that use spraying, for example, when spraying paint or spraying varnish. Just like so-called airless y processes. 15 that atomize high pressure paints and apply them to a surface, there are many processes that use compressed air. In these, an ink jet that emerges from a nozzle is atomized by means of quantities of air (protective air) that flow forward and, in this way, is transported as atomized spray paint towards a working stage. The work plane that is arranged at a working distance suitable for applying a coating is thus reached by the inkjet and the ink is thus applied to it. Tools that operate with compressed air, as well as so-called HVLP tools (high volume and low pressure), are, among other things, known from the prior art and differ in some operating parameters, for example, air in the nozzle. This kind of tool of the prior art is suitable for providing a pIan ink jet, which has advantages when the ink is applied to a surface. In comparison with a radially symmetrical circular inkjet, a flat jet provides greater homogeneity in the application of paint, similar to the application of it with a brush or roller, providing a much higher quality of the paint coverage. Paint spray devices are known in the art.
    previous document, for example, from the document under no. EP 0 596 939 Bl, "in which a radially symmetrical circular ink jet, emerging from an ink nozzle, is deformed by the air deflection means which are arranged on the sides of the ink nozzle and take the form of air horns, so that a flat ink jet generated is created in the region of a work plane, however, the jet profiles that are generated using the prior art often create an inadequate conformation of the air profile jet, in particular, when highly viscous paint materials, 10 such as, for example, wall paint, or viscous varnishes are used. An improved flat jet profile is always desirable as the quality of the work and the quality of the resulting ink coverage are
    They are highly dependent on the inkjet jet profile provided by an ink spray gun.
    The objective of the invention, therefore, is to further develop a spray head for generating a flat ink jet in a paint spray gun or in a paint spray lance, such a spray head. spraying overcomes the disadvantages of the prior art 20 This objective is achieved according to the invention, starting from the pre-characterization clause of claim 1, by the characterization part of claim 1. An additional modality according to the invention is provided by the pre-characterization clause of claim 16 and by the characterization part of claim 16. Advantageous additional designs and expedient modalities are described in the dependent claims. The invention relates to a spray head for the generation of a flat ink jet in a paint spray gun or a paint spray lance, such a spray head comprises 30 a port of air, an ink nozzle with a needle valve and an air cap arranged downstream from the air port in the direction of the air flow. The spray head for an ink spray lance is preferably
    designed without a needle valve if, for example, a viscous construction material, such as mortar, is to be sprayed.
    The air door has a centrally located opening through it. put for the passage of the ink nozzle.
    Also located in the air cap 5 is a centrally arranged through opening for the passage of the ink jet or ink nozzle, and a protective air flow that surrounds the ink jet or ink nozzle.
    Depending on whether the paint spray gun or paint spray lance has a nozzle for internal or external mixing, the ink nozzle, or the ink jet or construction material that has already been ejected from , it passes through the central opening in the air cover.
    In addition, the spray head according to the invention comprises at least one through-air opening which is radially separated in the air port from the central through-opening, and u
    15 at least one air deflection means which is preferably designed as. an air horn and which is arranged over an air through opening associated with it in the air cover.
    The air horn deflects an air jet that passes through in the direction of the ink jet or ink / air jet, and communicates with an air source on or over the gun body through the through opening. of air in the air cover and a through opening of air in the air door, such openings have a similar radial spacing from the center of the air cover or the air door.
    According to the invention, the spray head is characterized by the fact that the central through opening in the air cover is designed as a slit-shaped air cover opening with a first longitudinal geometric axis. of this opening of the air cover and the first transverse geometric axis of this opening of the air cover which is shorter than said longitudinal geometric axis.
    The spray head, according to the invention, with a slit-shaped opening of the air cover generates, by virtue of its shape, a flat jet that is enlarged during its path between the spray head and a plane of work.
    In a further development of the spray head, "as claimed in claim 1, the spray head is characterized by the fact that the air deflection medium is arranged on one side m.
    narrow of the central air cap opening along the longitudinal geometric axis of this slit-shaped opening, and an ink jet emerging from the spray head is enlarged along the transverse geometric axis of the air cap opening. slit-shaped air. Due to its slit-shaped air cap opening, the spray head in accordance with the invention generates a broad, flat jet that is enlarged in the direction of the transverse geometric axis of the slit-shaped air cap opening. , so that a horizontally extended slit in the air cap results in a vertically extended flat jet. In further development of the spray head
    W - 15 According to the invention, the ink nozzle is also designed as a slit-shaped ink nozzle. In this way, the formation of the pIano jet is amplified. In a preferred embodiment of the arrangement, according to the invention, two means of deflecting air are provided, preferably two air horns, symmetrically with respect to the center of the air cover. The two air deflection means, which are arranged at the respective narrow ends of the slit-shaped opening in the air cap, have an amplifying effect, caused by the air flow that passes through them, from both the sides on the formation of the flat jet 25, so that a pIan jet thus improved is provided for the coating of a surface. In another preferred development of the subject of the invention, pressure relief openings are provided that allow additional air to escape from the paint spray gun body without the emerging air 30 affecting the generated ink jet, in particular , the flat jet. Because of such pressure relief openings, it can also be ensured that a sufficient volume of airflow can always be released, for example, to provide sufficient cooling for ventilation.
    "Air supply pain. This is particularly necessary when the released air flow is used, for example, as a cooling air flow, as is the case with many of the radial fans used in 5 HVLP devices.
    In a development of the spray head according to the invention, additionally means are provided which supply air alternatively to the pressure relief openings or the air deflection means.
    In this way, a maximum available air flow can be used, although the air deflection medium can possibly be switched off for particular applications.
    A corresponding principle for use with a circular jet ink nozzle is presented in the prior art in the document under No. .EP0596939B1. The advantageous modalities of the means for alternatively switching between the pressure relief openings or the air deflection means will be described in detail in this description, with reference to the exemplary modalities.
    The reference is here explicitly made to the details of the exemplifying modalities.
    The invention also relates to a spray head for the generation of a flat ink jet in a paint spray gun or a paint spray lance, such a spray head comprises an air guide, in in particular, an air port.
    It is also conceivable that a paint spray gun or paint spray lance is provided with a spray head according to the invention, 25 without an air port, for example, when the paint nozzle is suspended centrally matched to the air guide of the ink gun body and there is no means of deflecting air in the region of the air cap.
    An air guide is required only when different through-air openings are made correspondingly to coincide with different air-outlet openings, in order to provide, in this way, other necessary functions in addition to the simple generation of a flat jet .
    The additional spray head according to the invention
    for an ink spray gun additionally comprises a
    "ink nozzle with a needle valve, and an air cap that is arranged downstream from the air guide in the direction of the air flow and has an opening and through centrally arranged for the passage of an ink jet or 5 an ink and protective air nozzle surrounding the ink jet or ink nozzle.
    The spray head of an ink spray lance for spraying viscous construction material does not preferably have a needle valve.
    The spray head is characterized by the fact that the central through opening in the air cover is designed as a slot-shaped opening, the slot-shaped opening which has a first longitudinal geometric axis of the air cover opening and a first transverse geometric axis of the air cap opening which is shorter than said longitudinal geometric axis.
    In this way, a spray head is provided that can u
    15 being manufactured in a simple and economical way, it generates a flat jet and does not require additional means of air deflection.
    It may also be possible to do without an air port, in particular, when the gun body is used as an air guide.
    This additional spray head, according to the invention, can be used in many applications that can include a wide variety of coating materials.
    In a further development of the spray head, according to the invention, with no means of air deflection, the ink nozzle is provided, which is also designed as a nozzle in the form of a slit.
    A preferred embodiment of the spray head, according to the invention, generates a flat inkjet that reaches a work plane that is placed at a working distance from the spray head and is arranged perpendicular to the spray direction, in that the longitudinal geometric axis of the flat jet and a transverse geometric axis of the flat jet 30, which is shorter than the longitudinal geometric axis of the flat jet, are rotated by 90 ° around the direction of spraying with respect to an axis longitudinal geometric shape of the air cover opening in the shape of a
    and the transverse geometric axis of the slit-shaped air cover opening.
    In this way, a flat jet is also generated, which, for example, when the slit-shaped opening of the air cover is horizontally arranged, generates a vertical jet directed on a work plane.
    The principles according to the invention of a spray head for generating a pIan ink jet in an ink spray gun will be further explained below.
    The term passage is used here for perforations, through which a fluid passes, of internally located components.
    The term vents is used for perforations in components, such perforations allow air to enter the region located externally from. internally located region.
    The arrangement of multiple passages or their ends one after the other in an opening is referred to below as a channel, in particular, an air channel.
    In the context of the exemplifying modalities, figure 1 shows an exploded drawing of the air cover with an air control disc, air port or needle valve, figure 2 shows an exploded drawing of a spray head according to the invention, figure 3 shows a rear view of the illustration in figure 2, figure 4 shows an illustration mounted in figure 1, figure 5 shows an exploded drawing of an additional arrangement according to the invention of an air cap (two pieces), an air port and an ink nozzle, figure 6 shows an exploded drawing of an additional spray head according to the invention, figure 7 shows the rear view of the arrangement according to the invention in figure 6, figure 8 shows a cross-sectional view through an arrangement assembled according to figure 4, along the longitudinal geometric axis of the slot,
    figure 9 shows a cross-sectional view along the ei-. the transverse geometric slit of an arrangement assembled according to figure 4, - figure 10 is an exploded drawing of an air cover with no air deflection.
    In detail, figure 1 shows an exploded drawing of a spray head 1 according to the invention, in which the components are shown separated from each other along a geometric axis of symmetry 2 that essentially corresponds to the direction spray head 10 of the spray head.
    The spray head 1 here comprises an air cap 3, an air port 4 and an ink nozzle 5, an air control disc 6 which is disposed between the air cap 3 and the air port 4 with the "nozzle" ink nozzle 5. Ink nozzle 5 is designed here as a needle valve - 15 and has a slit-shaped nozzle outlet.
    Needle 7, which is inserted into the ink nozzle 5 from the rear, has a wedge shape 8 at its tip that is compatible with the opening of the slit-shaped nozzle.
    A valve base 9, confined by a guide 11 and a sealing cylinder 12 after a tapered portion 10, abuts the wedge shape. 20 The ink nozzle 5 here is centrally suspended on the air port 4 by means of connection ribs 13 and can therefore be used as a component in an ink spray gun according to the invention.
    The slit-shaped opening of the ink nozzle 5 projects here, viewed in the direction of spraying, from the air port 4 so that the engagement or interpenetration of components arranged one after the other can be obtained.
    The air port 4 has clamping lugs 20 and 21 on its upper side which, when assembled (figure 4), engage with corresponding clamping grooves 22 in the air cover 3 and connect both parts together, so that are fixed in rotation.
    The air port 4 also has fixing slots 23 on its rear side which engage in the same way with the fixing lugs on the paint spray gun body (not shown). Multiple air passages are projected in the region of the &
    air 4 so that they penetrate its upper surface.
    In addition to a radially circumferential central passage in the air port, conformation air passages 25 and pressure relief passages 26 are also provided.
    The conformation air passages 25 and the corresponding pressure relief passages 26 have a radial spacing from the center of the air port 4 which is selected so that it corresponds to a radial spacing from the center of an air disc. air control 6 in which the control air passages 30 are arranged in the control disc 6. In this way, the control air passages 30 and the conforming air passages 25, as well as the relief passages of pressure 26, can be made to coincide with each other and form air channels when the spray head is mounted.
    The air control disc 6 also comprises an actuating pin 31 and a centrally arranged opening that allows the passage of the ink nozzle and a surrounding protective air flow through.
    The air cap 3 is arranged on the spray head 1 according to the invention, downstream in the direction of the paint or air flow.
    The air cover 3 comprises corresponding fixing slots 22 on its rear side that make a non-rotational connection to the air port 4. On its front side, the air cover comprises two air deflection means in the form of horns. of air 40 which are arranged at the respective narrow ends along a longitudinal geometric axis of a central slit opening 41 in the air cover.
    The air horns 40 have air outlets of 25 conformation 42 that direct an emerging air jet towards an ink / air jet that emerges through the central opening 41. Additionally, the air cover 3 has pressure relief openings 43 which are arranged in radial spacing from the central opening 41 and the air flow that emerges from it has no effect on an ink / air jet that merges through the central opening.
    According to the invention, said components can be produced, for example, as a metal part or as injection molded plastic parts, depending on what requirements
    quality and material properties are determined for
    And individual components. It is also conceivable, for example, that the ink nozzle is made from metal, the air port is made from plastic and the air cap is also made from plastic, and that another is used. variations in material combinations as part of component manufacturing. The spray head according to the invention is suitable for applications with pneumatically propelled application processes that atomize the paint using, in particular, compressed air at an air pressure of no more than 1000 kPa (10 bar), or in H-VLP processes that use a nozzle pressure of less than 70 kPa (0.7 bar (at 10.0 psi)) in order to meet HVLP conventions. An airflow stroke 50 is also shown by way of example in figure 1, which flows from a pistol body, not shown, at the current position of the air control disc 6 through a passage pressure relief valve 26, a control air passage 30 and a pressure relief opening 43. In this way, a secondary air channel is formed which removes a pressure relief air flow from the gun housing without affecting the inkjet / emerging air. In an equivalent way, the 20 other passages and openings that are shown and not described in detail are also interconnected to form channels. Figure 2 shows another exploded diagram of a spray head 60 according to the invention, with an air cap 3, an air control disc 6 and an air port 4 with the ink nozzle 5 arranged in the 25 same. In order to attach the spray head according to the invention to an ink gun (not shown), a union nut 61 is provided which engages a thread (not shown here) on the ink gun. The air control disc 6 has control air passages 30 which are arranged in such a way that they can be made to match the pressure relief passages 26 of the air port or the control air passages. '25 air port formation. The air cap 3 and the air port 4 are connected to each other so that they are fixed in rotation by the fixing lugs.
    21 and the fixing grooves 22, the pressure relief openings 43 and the conformation air passages (not shown here) arranged on the rear side of the air horns 40 are made to match + corresponding corresponding passages in the air port 4. The fixing lugs 21 and the fixing grooves 22 have different lengths to ensure that the air cover 3 is mounted with the air port 4 in a functionally suitable manner. In this way, it is not possible for the parts to be mounted in a 180 ° rotated position. By rotating the air control disc 6 around its center with rotational movement 10 62, the control air passages 30 allow air to pass through a conformation air channel formed by the air passage of conformation 25 and the air guide in the air horn 40, or the passage through a pressure relief air channel that is formed by the pressure relief passages 26 and the pressure relief openings 43.
    . 15 The actuating pin 31 on the air control disc 6 penetrates through an elongated orifice 63 when the spray head is mounted. A rotating actuation means 64, which is trimmed over the union nut 61 by means of fixing tabs 65, is arranged in front of the union nut 20. The rotating actuation means 64 has a fastener 66 that engages it has a protuberance in front of the actuation pin 31 in the assembled state, and carries said actuation pin 31 forward. In this way, the rotational movement 62 can be transmitted through the rotating actuation means 64 to the actuation pin 31 and it is possible, in this way, to easily switch between the air conduction through a forming air channel and the air conduction through pressure relief channels. Figure 3 shows a spray head according to the invention, as shown in figure 2, in a rear view. It is clear here that the control air passages 30 can have different cross-sectional areas 30a and 30b in the air control disc 6, depending on whether they are suitable for forming a forming air channel or serve only to form a pressure relief air channel.
    The conformation air inlets 70 are arranged on the "rear side of the air cap 3, through which a flow of conformation air enters an air horn 40 and can act on an inkjet / air through
    The one for the conformation air outlet 42. 5 The air cover 3 has a depression 71 on its rear side which is sized to receive the air control disc 6, so that the air control disc 6 can be arranged between the air cap 3 and the air port 4 when the spray head is mounted, but it is certainly not retained by the pressure applied by the union nut 61 and, preferably, remains able to rotate within the depression 71. Figure 4 shows an assembled arrangement of the components in Figure 1, in which the air control disc 6 is now accommodated in the "internal region between the air port 4 and the air cap 3. The slit-shaped tip of the ink nozzle 5 penetrates through the region of the fen-shaped opening 15 of the central 41 in the air cover or forms a plane with the last one, an annular gap 80, through which a protective air flow that transports and atomizes the ink that emerges from the ink nozzle 5 is guided, is formed between the edge of the abe rupture in the shape of a central slot 41 and the edge of the ink nozzle in the shape of a slot 5. 20 Depending on the application and the material used, the dimensions of the nozzle in the shape of a slot 5, the opening in the shape of a central slot 41 and, thus, of the annular span 80 are adapted in order to optimize the atomization of the material to be applied. Figure 5 shows another design of a spray head 25 100 according to the invention, in which the air cap is designed as a two-part element comprising a horn cover 101 and an annular gap cover 102. A horn cover 101 here has air horns 103 over which the conformation air vents 104 are arranged, where the air flow that emerges from the latter can act on a central air / air jet. The horn cover 101 also has pressure relief openings 105 that are arranged in radial spacing from the center of the horn cover 101.
    The annular span cover 102 has an opening in the shape of a "central slot 106 in its central region, where this opening in the shape of a central slot 106 is surrounded laterally by corresponding projections and deformations to improve the fit when the horn cover 101 is 5 mounted with the annular span cover 102. Additionally, the annular span cover has air passages 107 that are arranged, symmetrically opposite to each other, in a radial spacing on the narrow sides of the central slot-shaped cover 106 The upper surface of the annular span cover 102 is furthermore perforated through holes 108 which are not used as air passages.
    An air port 110, which has an ink nozzle 112 with a slit-shaped nozzle opening arranged in its center over connection nipples 111, is arranged upstream from the horn cover and the will cancel, in the direction of the air flow.
    The air port 110 has 15 air passages 113 which are radially separated from a center by a distance which is selected so that it corresponds to the radial spacing of the air passages 107 in the annular span cover 102, and the a - pressure relief ports 105 on the horn cover 101, and the conformation air outlet channels 104 on the air horn 103 on the horn cover 20 101. The fixing slots 114 are provided on the rear side of the air port 110 and allow the arrangement to be fixed within a gun body.
    In addition, prisoners 115, on which the ring cover 25 is pressed and which penetrate the holes 108, are arranged on the upper surface of the air port 110. In this way, the ring cover 102 is connected to the air port 110 so that it is fixed in rotation, the consequence of which, similarly to the description in figure 4, consists in the fact that an annular gap for the passage of a flow of shielding gas is formed between the edge of the opening in central slot 106 in the span cover annul the nozzle embroidery of ink 112. Figure 6 shows another exploded view of a layout with the correct coincident positioning of the pressure relief openings and, on the other hand, the correct coincident positioning of the inlets forming air 130 through the air passages 107. A spray head 1, according to the invention, is shown in figure 8 in a cross-sectional view along the longitudinal geometric axis of the ink nozzle in slit shape or the central slit opening 41 of the air cap 3. The ink nozzle 5 comprises here a needle head 200 which is shown here in a slightly retracted position, so that a situation in the which ink can emerge is obtained. A spray pattern 201 that reaches a work surface has a transverse extension 202, in which a normal processing distance should be chosen for the work surface that corresponds, for example, to a varnisher's distance from a
    P 15 wall or workpiece to be varnished. The projected inkjet stroke is indicated by a spray limit 203 schematically illustrated. The transverse extension 202 is substantially parallel to the longitudinal extension of the slot 204, which corresponds to the width of the ink nozzle slot or the slot width of the central slot 41. Depending on the position of the air 6, the conformation air vents 42 provide a conformation air flow that acts laterally on the emerging ink / air jet and deforms the spray limit 203 so that it approaches a central spray axis. 25 Figure 9 shows the situation in figure 8 again in a cross-sectional view, but rotated by 90 ". In this position, the spray pattern 201 has a much greater longitudinal extension 210, with the distance from the working plane - work is chosen so that it corresponds to the distance in figure 8. The longitudinal extension 30 of the spray pattern 201 extends substantially parallel to the transverse extension of the gap 211, so that a transverse or longitudinal geometric axis of the jet of paint / air in the form of a
    13 connecting rib 20 clamping shoulder 21 clamping shoulder
    W 22 clamping groove 5 23 clamping groove 25 forming air passage 26 air pressure relief passages 30 control air passages 30a cross-sectional surface 10 30b cross-sectional surface 31 actuating pin 40 air horn 41 central opening 42 conformation air outlet. . 15 43 pressure relief opening 50 airflow stroke 60 spray head 61 union nut 62 rotational movement 20 63 elongated hole 64 swiveling means 65 fastening tab 66 fastener 67 protrusion 25 70 conformation air inlet channels 71 depression 80 voids 100 spray head 101 horn cover 30 102 void cover 103 air horn 104 forming air outlet
    105 pressure relief openings 106 central opening 107 air passage 108 hole 5 110 air port 111 connection rib 112 ink nozzle 114 air passage 114 fixing slot 10 115 studs 120 spray head 121 union nut - 122 medium rotating actuator 123 fixing tab © fastener. 15 124 125 rotational movement 130 conformation air inlets 131 elongated orifice = limit of rotation 200 needle head 20 201 spray pattern 202 cross extension 203 spray limit 204 longitudinal gap extension 210 longitudinal extension 25 211 cross gap extension
    权利要求:
    Claims (18)
    [1]
    CLAIMS - 1. Spray head for generating a flat ink jet on a paint spray gun or on a paint spray lance, comprising 5 - an air port, - an ink nozzle with a needle valve, - an air cap arranged downstream from the air port in the direction of the air flow, - a through opening for the passage of the ink nozzle, 10 centrally located in the air cover, - a through opening, centrally arranged in the air cap, for the passage of the ink jet or ink nozzle, and of a protective air flow that surrounds the ink jet or ink nozzle, - at least one through air opening which is radially
    F. 15 separated in the air port from the central through opening, - at least one air deflection means, preferably an air horn, which is arranged over an air through opening associated with it, in the air cover. air and deflects an air jet that crosses towards the ink jet or the ink / air jet, 20 - in which the air through opening in the air cover and an air through opening in the air door are radially spaced similar to the center of the air cover or the air port, characterized by the fact that - the central through opening in the air cover is designed as a slit-shaped air cover opening with a first longitudinal geometric axis of the air cover opening and a first transverse geometric axis of the air cover opening which is shorter than the longitudinal geometric axis.
    [2]
    2. Spray head according to claim 1, characterized by the fact that the air deflection means is arranged on a narrow side of the central air cover opening along the longitudinal geometric axis, and a jet of paint that emerges from the spray head
    tion is extended along the transverse geometric axis of the air cover opening.
    [3]
    3. Spray head according to claim 1 or 2, characterized in that the ink nozzle is designed as a slit-shaped ink nozzle cover with a first longitudinal geometric axis of the opening of the ink nozzle and a first transverse geometric axis of the ink nozzle opening which is shorter than said longitudinal geometric axis, wherein the geometric axes extend parallel to the geometric axes of the central air cover opening in the air cover . 10
    [4]
    4. Spray head according to any one of the preceding claims, characterized by the fact that the two means of deflection of air are provided symmetrically in relation to the center of the tam-. bread.
    [5]
    5. Spray head, according to any one of the previous 15 claims, characterized by the fact that at least one pressure relief cover for the pressure relief air flow and, preferably, two or four pressure relief openings are provided in the air cap, radially separated from the center of the latter.
    [6]
    6. Spray head, according to claim 5, characterized by the fact that the pressure relief opening and, preferably, the pressure relief openings, have in total more or less the same area cross-sectional surface area than the total cross-sectional surface areas of the through air openings of the air deflection medium. 25
    [7]
    7. Spray head according to claim 5 or 6, characterized in that at least one pressure relief opening and, preferably, two or four air pressure relief passages are provided with a position radial that corresponds to the radial position of the pressure relief opening on the air cover. 30
    [8]
    Spray head according to any one of claims 5 to 7, characterized by the fact that means are provided that supply air alternatively for the pressure relief opening, of pressure
    the pressure relief openings, or for the air deflection medium, preferably more than one air deflection medium.
    [9]
    9. Spray head according to claim 8, characterized by the fact that the means are formed by a control disc 5 with a centrally arranged protective air passage and at least one, preferably several, passages of control air located radially on the outside.
    [10]
    10. Spray head according to claim 9, characterized by the fact that the control disc is designed so that 10 can rotate in relation to the air port and / or the air cap.
    [11]
    Spray head according to claim 8, characterized in that the means are formed by a multi-part air cap which comprises an annular gap cap and a horn cap,. 15 - in which the annular opening has a central opening for the formation of an annular opening and radially separated air passages from the center - and in which the horn cover has a central opening and means of air deflection and pressure relief openings, spaced from said central opening.
    [12]
    12. Spray head, according to claim 11, characterized by the fact that the annular span cover is connected to the air port so that it is fixed in rotation, preferably through studs that engage holes in the span cover annul or penetrate through these 25 holes, and the horn cover is designed so that it can rotate in relation to the annular gap cover.
    [13]
    13. Spray head, according to claim 12, characterized by the fact that the horn cover is preferably controlled by the pins that penetrate through the annular span cover, the angle through which can rotate in relation to the air port and the annular span cover is limited.
    [14]
    Spray head according to any one of the preceding claims, characterized in that the ink nozzle is connected to the air port via connecting ribs and is preferably formed in one piece by means of molding by injection. -
    [15]
    15. Spray head, according to any one of the previous 5 claims, characterized by the fact that a generated flat ink jet reaches a working plane at a working distance from the spray head and perpendicular to the spray direction, the longitudinal axis of the plane jet and the cross axis of the plane jet which is shorter than the longitudinal axis 10 are rotated by 90 °, in relation to the direction of spraying, in relation to the longitudinal geometric axis of the slit-shaped air cover opening and the transverse geometric axis of the slit-shaped air cover opening.
    [16]
    16. Spray head for generating a 15 ink jet in a paint spray gun or paint spray lance, comprising: - an air guide, in particular an air port, - an ink nozzle with a needle valve, - an air cap arranged downstream from the air guide in the direction of the air flow, - a through opening for the passage of the ink nozzle, centrally arranged in the air guide, - a through opening, centrally arranged in the air cover, for the passage of the ink jet or an ink nozzle, and a flow of 25 protective air surrounding the ink jet or the ink nozzle, characterized by the fact that - the central through opening in the air cover is designed as a slit-shaped opening with a first longitudinal geometric axis of the air cover opening and a first transversal geometric axis of the cover opening of air that is shorter than said longitudinal geometry axis dinal.
    [17]
    17. Spray head according to claim 16,
    characterized by the fact that the ink nozzle is designed as a slit-shaped nozzle with a first longitudinal geometric axis of the ink nozzle, parallel to the first longitudinal geometric axis of the opening of the ink
    The air cap, and a first transverse geometry axis of the ink nozzle, is shorter than said longitudinal geometry axis and parallel to the first transverse geometry axis of the air cap opening.
    [18]
    18. Spray head according to claim 16 or 17, characterized by the fact that a generated flat ink jet reaches a work plane at a working distance from the spray head and perpendicular to the direction of spraying, in which the longitudinal geometric axis of the jet stream and the transverse geometric axis of the flat jet which is shorter than the longitudinal geometric axis are rotated by 90 ° over the spraying direction, in relation to the longitudinal geometric axis of the opening slit-shaped air cover and the transverse geometric axis of the slit-shaped air cover opening.
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    同族专利:
    公开号 | 公开日
    DE102009053449A1|2011-02-10|
    EP2461909A1|2012-06-13|
    WO2011015183A1|2011-02-10|
    US9073068B2|2015-07-07|
    US20120160935A1|2012-06-28|
    EP2461909B1|2015-01-07|
    CN102695563A|2012-09-26|
    CN102695563B|2015-11-25|
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    法律状态:
    2020-08-25| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-12-08| B11B| Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements|
    2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009036147.2|2009-08-05|
    DE102009036147|2009-08-05|
    DE102009053449.0|2009-11-17|
    DE102009053449A|DE102009053449A1|2009-08-05|2009-11-17|slot|
    PCT/DE2010/000899|WO2011015183A1|2009-08-05|2010-07-30|Slotted nozzle|
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