EP2945754A2 - Dispositif de dosage - Google Patents

Dispositif de dosage

Info

Publication number
EP2945754A2
EP2945754A2 EP14716327.3A EP14716327A EP2945754A2 EP 2945754 A2 EP2945754 A2 EP 2945754A2 EP 14716327 A EP14716327 A EP 14716327A EP 2945754 A2 EP2945754 A2 EP 2945754A2
Authority
EP
European Patent Office
Prior art keywords
bellows
closing unit
unit
actuator
outlet opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14716327.3A
Other languages
German (de)
English (en)
Other versions
EP2945754B1 (fr
Inventor
Peter Müller
Philipp Spiegel
Wolf-Dietrich Herold
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.)
Delo Industrieklebstoffe GmbH and Co Kgaa
Original Assignee
Delo Industrieklebstoffe GmbH and Co Kgaa
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 Delo Industrieklebstoffe GmbH and Co Kgaa filed Critical Delo Industrieklebstoffe GmbH and Co Kgaa
Publication of EP2945754A2 publication Critical patent/EP2945754A2/fr
Application granted granted Critical
Publication of EP2945754B1 publication Critical patent/EP2945754B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • B05B1/3033—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/306—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1034—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves specially designed for conducting intermittent application of small quantities, e.g. drops, of coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • B05C5/0237—Fluid actuated valves

Definitions

  • the invention relates to a metering device, in particular a metering device with a long service life for delivering free-flying drops of low to high viscosity liquid media.
  • liquid media is a task that many fields of technology are faced with.
  • the spectrum ranges from inkjet printing applications in the areas of medicine, pharmacy and biochemistry, which mostly involve the dispensing of aqueous or other low-viscosity media, to the dosing of highly viscous media such as sealants and adhesives.
  • dosing devices Following the general trend towards miniaturization, dosing devices must be able to dispense ever smaller quantities precisely. In order to achieve the frequently also required higher throughput rates, a non-contact drop dispensing is used in many cases, eliminating the time required for a method of metering device for discontinuing the metered liquid. Dosing devices that deliver the amount of liquid to be dosed as free-flying drops are known for low-viscosity media, especially in the field of inkjet printers, see, e.g. EP 0 422 870 B1, US Pat. No. 4,509,057 and WO 2013/013983 A1.
  • drop dispensers for high and low viscosity media differ in how the dosing is controlled and how free-flying single drops are generated:
  • Dosing devices for low-viscosity media require only a very little to no pressure due to the low flow resistance in order to promote the dosing from a reservoir into the actual metering device. Consequently, it is often not necessary to actively close the outlet opening of the metering device in order to prevent the leakage of the metering medium in the inactive state. Frequently, the surface tension is sufficient to retain the medium in the exit opening.
  • highly viscous media can only be conveyed from a reservoir when pumped or pressurized fluid, e.g. Compressed air, pressure is applied to the medium.
  • pressurized fluid e.g. Compressed air
  • a pressure difference between the reservoir and metering device remains and ensures that a sufficiently high flow rate is maintained.
  • the metering is interrupted, the pressures within the overall system are equal, so that the media delivery pressure is applied directly to the discharge opening of the metering device. In an open system, this pressure ensures that the surface tension of the dosing liquid is overcome and uncontrolled medium flows out of the discharge opening of the dosing device.
  • metering devices for high-viscosity media that either the delivery pressure taken from the system or the channel from Vorratsbe container to the outlet of the metering device is actively closed when the dosage ends. If in the second case, e.g. a high-viscosity adhesive containing solid fillers are metered with a high repetition rate from a drop metering device, the metering device must contain a closure device which is fast on the one hand, but on the other hand also releases a sufficiently large passage opening, so that the filler particles can flow through unhindered.
  • low-viscosity media For the production of a single, free-flying droplet, it is generally sufficient for low-viscosity media to give a pressure pulse to the liquid to be metered, so that a drop is ejected from the outlet opening.
  • the damping of such a pressure pulse for example, a shock wave generated by a piezoelectric actuator or a gas bubble is so low that the surface tension is overcome at the outlet opening and a drop detaches.
  • the location where the pressure pulse is generated, and the outlet opening can therefore be relatively far apart.
  • this approach does not work. To separate a single drop of the dosing medium from the rest, strong cohesive forces must be overcome. A shockwave that is generated remotely in the dosing medium is damped too fast.
  • the most promising approach would be to accelerate the medium to be ejected to a high enough velocity with respect to the rest of the medium so that the kinetic momentum of the droplet can overcome the restraining forces in the medium.
  • the higher the viscosity - and thus the cohesive force - of the dosing medium the higher the impulse must be.
  • the velocity that a flowing liquid reaches in a flow channel, such as an outlet opening depends on the viscosity and the pressure difference between the ends of the channel. High viscosities therefore provide, in two respects, that high pressures must be built up at the outlet to produce a single drop: first, because the viscosity reduces the flow rate, and second, because the flow rate must be higher, the higher which are cohesive forces in the medium.
  • a valve lifter is moved up and down via an engine and a crankshaft, which at the lowest position closes an elongated cylindrical outlet opening and releases it upwards during the stroke ,
  • the rapid downward movement during the closing operation the highly viscous medium is compressed at the inlet of the outlet opening and thus generates a high pressure, which can flow out of the dosing medium with high flow velocity from the outlet, so that it comes to the formation of individual drops.
  • the valve stem thus simultaneously assumes the two described tasks of closing the metering device and building up the pressure required to produce individual drops.
  • a disadvantage of this design is that the motor continuously passes through and forms the droplets of the metering medium only with a fixed or slowly variable repetition rate. Also, the repetition rate must not be too low, since then the plunger moves too slowly and does not cause sufficient pressures. Because of the inertia of the drive thus the production of individual drops is not possible as needed. Finally, the crankshaft causes the speed of the valve tappet to have a sinusoidal course, so that the speed and therefore the compression at zero is just at the moment of closing in which the highest pressure in the medium should be built up.
  • EP 1 414 080 B1 discloses a piezoelectric actuator for a valve. Since piezoelectric ceramic elements, as used in such actuators have only small strokes, a lever system is described, which increases the stroke. However, such a system is complicated to manufacture and adjust and the gap between the outlet opening and the valve needle with the valve open is still too small for metering media with larger filler particles.
  • EP 1 437 192 A2 discloses a drop metering device which includes a pneumatically driven valve lifter.
  • the actuator includes a piston that can move within a cylinder. If compressed air is injected into the volume under the piston, the piston and the valve tappet firmly connected to it are pushed upwards, thereby opening the outlet opening of the metering device for the metering medium. If the cylinder is then vented again, a spring pushes the piston down again from the opposite side and the outlet opening is closed again.
  • the disadvantage of this solution is that the pressure chamber of the cylinder and piston is sealed by a fixedly connected to the piston seal that slides during the lifting movement along the cylinder inner wall.
  • DE 2 553 163 A1 discloses a pressure-controlled shut-off valve for blocking the flow of a cryogenic medium, in which a bellows separates the space of the cryomedium from the space of the control pressure. This valve is not suitable for dropping doses of liquids or even for dosing highly viscous liquids.
  • CH 678 754 A5 discloses a shut-off valve in a line.
  • a part of the conduit wall is formed by a bellows, which is moved to actuate the valve disposed inside.
  • the bellows is concentrically surrounded by another bellows and the actuation is done by injecting compressed air into the annular chamber between the two bellows.
  • This valve is also unsuitable for drop dosing of liquids or even for dispensing high-viscosity media. Because the contact of the bellows with the medium in the line makes the movement sluggish.
  • media such as adhesives, which cure under certain conditions, can adhere the bellows. Because of the wave or fold shape of the bellows wall, cleaning in such cases is difficult or impossible.
  • the object of the invention is therefore to provide a metering device which has an actuator which is virtually maintenance-free, can also dose highly viscous media as free-flying single drops and can also dispense mixed metering media with larger filler particles.
  • the metering device should be as compact as possible in order to be able to easily integrate it into production systems.
  • the metering device according to the invention is largely low maintenance. It can impart a high impulse and a high speed to a closing unit, such as a valve tappet, in order to dose even highly viscous media as free-flying single drops. It can reach a large stroke to dispense metered media even with larger filler particles.
  • Such a metering device comprises an outlet unit with an outlet opening, through which the metering medium is ejected in the form of individual free-flying drops.
  • a feed channel is connected, via which the metering medium is conveyed from a storage container by a pump or by applying a delivery pressure to the outlet opening.
  • the outlet opening is closed or opened by a movable closing unit, so that the flow of the metering medium through the outlet opening can be controlled by means of the movement of the closing unit.
  • the movement of the closing unit is produced by an actuator unit or an actuator which has a housing, one or more metal bellows and a force transmission element for transmitting the force to the closing unit.
  • the metal bellows are hermetically sealed on one side and tightly and firmly connected to the actuator housing on the other side.
  • Channels are provided in the actuator housing establish a connection between at least one control valve and the interior of the metal bellows. By switching the control valve, a pressurized fluid is directed into the interior of the hermetically sealed metal bellows so that the metal bellows can expand.
  • the ambient atmosphere is applied to this expansion from the outside no friction, so that the speed on the part of the actuator essentially by the pressure force, the restoring forces of the metal bellows, the internal friction of the pressurized fluid and the masses of the moving elements is determined .
  • a gas is used as the pressure fluid, so that the internal friction of the pressure fluid is minimized and the speed is increased accordingly.
  • the hermetically sealed end of the metal bellows is connected to the power transmission element, which transmits the movement and force of the pressurized metal bellows to the clamping unit. If the pressurized fluid is allowed to escape from the metal bellows via a control valve, the metal bellows retract again.
  • This return movement can be generated either by the restoring forces of the metal bellows itself or preferably by an additional spring, a return spring, which counteracts the expansion of the metal bellows supported.
  • the spring acts on the power transmission element or the closing unit such that the closing unit closes the outlet opening when the metal bellows are not under pressure.
  • the closing unit is thus arranged on that side of the outlet opening, from which the supply of the metering medium takes place. As it closes, it moves towards the outlet opening and then sits on its edge to close it. Thus it supports the ejection of a drop of the dosing medium from the outlet opening.
  • the closing movement can be assisted by an additional magnetically acting element.
  • the magnetically acting element exerts an additional force on the force transmission element.
  • this force acts in the closing direction of the closing element.
  • the force curve of the magnetically acting element is such that the force increases, the closer the closing element comes to the closed position. In this way, the magnetically acting element compensates for the release of the spring force of the return spring and thus unfolds maximum support of the pressure fluid discharge.
  • the magnetically acting element has one or more permanent magnets.
  • the magnetically acting element has one or more electromagnets.
  • the magnetically acting element has a combination of an electric and a permanent magnet, wherein the electromagnet is controlled such that the force effect of the combination only supports one or, if the electromagnet is reversed, both directions of movement of the force transmission element.
  • FIG. 1 is a schematic sectional view of a metering device according to the invention before the beginning of the dosing
  • FIG. 2 shows a schematic sectional view of the metering device of FIG. 1 during the metering operation with outlet opening in the opened state
  • FIG. 3 shows a schematic sectional view of the metering device of FIG. 1 and FIG. 2 after completion of the metering process
  • 4 is a schematic side sectional view of a section of an actuator unit with a larger number of metal bellows according to a variant of the metering device of FIG. 1, 4a is a schematic plan view of a power transmission element with four linearly arranged Metallbälgen according to a variant of the metering device of Fig. 1,
  • 4b is a schematic plan view of a power transmission element with three on one
  • Circular metal bellows according to a variant of the metering device of Fig. 1,
  • FIG. 4c is a schematic plan view of a power transmission element with four metal bellows arranged as a rectangle according to a further variant of the metering device of Fig. 1,
  • Fig. 6 is a schematic sectional view of a metering device with a magnetically acting element according to an embodiment of the invention.
  • FIG. 7 is a schematic sectional view of a metering device with an electromagnet according to a variant of the metering device of Fig. 6,
  • exemplary embodiments which are a variant of another exemplary embodiment and to which the figures specifically show the features of the variant, correspond to this other exemplary embodiment.
  • Fig. 1 shows an embodiment of a metering device 1 in the lateral sectional view.
  • the metering device has an actuator unit or an actuator with an actuator housing 2, a force transmission element 3 and at least one bellows 4 (bellows), which is hermetically sealed by a closure piece 5 at one end and at its opposite end in the longitudinal direction and tight is firmly connected to the actuator housing 2.
  • bellows 4 bellows
  • the power transmission element 3 is a Traverse, which connects the end pieces 5 of the bellows 4 together.
  • channels 6 which connect the interior of the bellows 4 with a (not shown) valve. This valve is designed to direct a pressurized fluid into the interior of the bellows 4 as needed.
  • a valve stem or a valve needle 10 is connected as a closing unit, which is movable in the longitudinal direction and protrudes down between the bellows 4 in a feed unit 9 for the metering 14.
  • the feed unit 9 contains a channel 11, via which the metering medium 14 is conveyed from a storage container 13 to an outlet unit 15 or nozzle with an outlet opening 16, which has the shape of a short channel (outlet channel 16) passing through the wall of the outlet unit 15 passes.
  • valve needle 10 protrudes into the channel 11, immersed in the dosing and presses in the lower starting position with its tip against the inlet of the outlet 16 and thus closes the metering device 1.
  • the next step in the dosing process is the filling of the bellows 4 with the pressurized fluid, so that the state shown in Fig. 2 is achieved.
  • both liquids and gases are considered as pressurized fluid.
  • Liquid, less compressible pressure fluids have the advantage that only small volumes would have to flow in or out in order to build up a high pressure in the interior of the bellows 4.
  • the internal friction of the pressurized fluid should be as low as possible. Therefore, gaseous pressurized fluids such as air, nitrogen, carbon dioxide, hydrogen or other gases are preferable.
  • a static sealing element or a welding, gluing or similar ensures that the bellows 4 are tightly connected to the actuator housing 2 and there is no loss of pressure fluid at this junction.
  • the end piece 5 at the other end of the respective bellows 4 is also by an additional sealing element or a weld, gluing o.ä. tightly and firmly connected to the bellows 4. All these Seals are loaded purely statically and in particular are not subjected to any rubbing or sliding load during operation.
  • the bellows 4 should each be designed so that the radially outward force causes only a small radial extent and consequent increase in volume of the bellows 4 and substantially only by the force on the end piece 5 a desired increase in length of the bellows 4 along the longitudinal axis takes place.
  • this is achieved by making the bellows 4 of a preferably inelastic material, e.g.
  • the walls of the bellows 4 should be as thin as possible, so that a deformation along the axis is as little resistance as possible. Even if metal such as e.g. Stainless steel is the preferred material for the bellows 4 and therefore the term metal bellows is possible, it should be noted that other materials such. Plastics come into question, especially if by additional constructive measures such. Stiffening rings made of the same material as the wall or a combination of different materials outside or inside of the ribs of the bellows 4 a radial stabilization is made.
  • the bellows 4 can withstand proper dimensioning of a very high number of load changes, which is equal to a virtually unlimited life of the actuator.
  • the travel ranges which can typically be achieved are at the same dynamics and size but many times greater than the achievable with a piezoelectric actuator with leverage strokes.
  • the outer space of the bellows 4 is connected to the ambient atmosphere, which may possibly also be a vacuum or an overpressure compared to normal atmosphere. Due to the largely constant ambient pressure and the gaseous environment, the end pieces 5 of the metal bellows 4 exert on the force transmission element 3 a defined force which ensures largely friction-free elongation of the metal bellows 4 along their axis.
  • the termination pieces 5 may e.g. be firmly connected by a screw or a material connection with the power transmission element 3.
  • devices 7 such as e.g. Springs (return springs) are present, which exert a counter force to the force transmission element 3 to the bellows 4, also extends a non-positive connection of the end piece 5 and the power transmission element.
  • valve needle 10 Due to the elongation of the bellows 4 and the resulting displacement of the force transmission element 3, the valve needle 10 is retracted (lifted) in the longitudinal direction and releases the outlet channel 16 of the outlet unit 15 for the discharge of the metering medium 14.
  • the last phase of the dosing process is shown in FIG.
  • the pressurized fluid flows rapidly from the interior of the bellows 4.
  • the fluid valve that accomplishes the emptying of the bellows 4 a 3-way valve, the also controls the filling.
  • separate fluid valves for filling and emptying are also conceivable. In order to allow the emptying process to take place quickly and thus rapidly reduce the pressure forces in the bellows 4, the fluid valves should have typical switching times in the lower millisecond range.
  • the bellows 4 go back to their original length, so that the power transmission element 3 and the valve needle 10 again reach the starting position shown in FIG.
  • the tip of the valve needle 10 performs a fast forward movement, by means of which the dosing medium 14 is compressed in the region of the outlet opening 16 and the dosing medium 14 accelerated in the outlet channel by the build-up dynamic pressure and finally as free flying drop 57 is expelled from the outlet opening 16.
  • the tip of the valve needle 10 resides in the interior of the outlet unit 15 in its seat on the edge of the outlet opening 16 and closes it as shown in FIG. 1, so that no further dosing medium 14 can flow out until the next metering stroke.
  • the actuator contains no sliding sealing elements in the metering device 1 just described, it works in contrast to the prior art friction and wear, which ensures a long life and high speeds of the valve needle 10.
  • the arrangement shown in Fig. 1-3 of two bellows 4 arranged symmetrically about the attachment point of the valve needle 10 on the power transmission element 3 is advantageous in order to keep the lateral extent of the metering device 1 as small as possible.
  • the introduction of force from point-symmetrical directions from the bellows 4 to the attachment point of the valve needle 10 ensures that no bending moment is exerted on the valve needle 10, which would result in additional friction and wear for the valve needle 10.
  • a direct comparison of the metal bellows 4 and the return springs 7 as shown in Fig. 1-3 is not mandatory.
  • any other arrangement of metal bellows and return springs can be selected as long as the introduction of force takes place in each case symmetrically about said attachment point. That it is e.g. also possible to provide two bellows a return spring against.
  • FIG. 4 shows by way of example a section of an actuator housing 2 with a linear arrangement of four bellows 4.
  • the associated plan view of the force transmission element 3 and the bellows 4 can be found in FIG. 4a. Without enlarging the lateral extent of the metering device is so compared to the arrangement in Fig. 1-3, the double actuator power available.
  • FIGS. 4b and 4c show further symmetrical arrangements of a plurality of bellows 4, here three or four bellows 4 around the point of attachment of the valve needle 10 to the force transmission element 3.
  • the arrangement is point-symmetrical or two-fold (FIGS. 4a and 4c), triple (FIG. 4b) or generally multiple rotationally symmetrical about the attachment point.
  • the attachment point is located in Focus of the forces exerted by the bellows (4) when filled with the same pressure fluid to the power transmission element.
  • a metering device can advantageously also be constructed with metal bellows 4 with other than circular cross sections.
  • Bellows with rectangular or circular segment-shaped cross-sections conceivable to optimize the ratio between effective area and space.
  • sectional views in Fig. 1-3 are not to be understood as meaning that two separate, equal sized metal bellows are shown with different axes, but the same sectional view also applies to a variant with two concentric bellows of different diameters , between which an annular pressure space is formed.
  • the power transmission element 3 also does not have to be completely free to move. It is also conceivable that the force transmission element 3 is designed as a lever, which on one side via a joint, e.g. a non-sliding solid joint, is connected to the actuator housing 2 and is moved on the other side of one or more Metallbälgen 4. Depending on whether an amplification of the stroke or an amplification of the force acting on the valve needle 10 is to be achieved, the point of attachment of the valve needle 10 may be arranged on the force transmission element 3, viewed from the joint, beyond the metal bellows 4 or between metal bellows 4 and joint.
  • a joint e.g. a non-sliding solid joint
  • the closing unit 10 for the outlet opening 16 does not necessarily have to have the illustrated needle shape. It is also conceivable to use a pressure piece which only traces the contour of the outlet unit 15 in the region of the outlet opening 16.
  • the interior of the bladders 4 can be filled with pressurized fluid for actuating the metering device, while the outer space of the bladders 4 remains essentially at constant pressure, in particular at atmospheric pressure.
  • the outer space of the bellows 4 can be filled with pressurized fluid in order to actuate the metering device, while the interior space remains essentially at constant pressure.
  • the pressure fluid is passed through corresponding passages in the actuator housing alternately in the interior of the bellows 4 and in the outer space to move the valve needle 10 back and forth.
  • This variant can achieve particularly fast opening and closing operations even with high-viscosity metering media and large stroke of the valve needle 10 and is also advantageous to accelerate the closing process and the tearing of a drop from the outlet opening 16 of the outlet 15 by the pulse of the valve needle 10 during the closing process to favor.
  • valve needle 10 in a drop metering device In order for the valve needle 10 in a drop metering device to generate the highest possible back pressure in the metering medium at the outlet opening 16, it is necessary for the valve needle to be as close as possible to the edge of the outlet opening 16 at the moment of impact has high speed. If the closing operation as described above accomplished by a mechanical spring 7 such as a screw or a plate spring, then this has the advantage that the outlet opening 16 of the metering device is closed without applied pressure fluid, but has the disadvantage that the Spring force is the lowest even when the closing position is reached.
  • a mechanical spring 7 such as a screw or a plate spring
  • FIG. 5 shows the force-displacement characteristic curve 72 of a magnet which is attracted by a ferromagnetic body or another magnet.
  • the attracting force becomes greater the more the magnet of zeroing, i. approaches its contact with the ferromagnetic body or other magnet.
  • the characteristic of the magnet thus shows the reverse slope of the characteristic of a mechanical spring.
  • the zero positions of the characteristic curves do not have to match.
  • the zero position of the magnetic characteristic 72 i. the point where the magnet and ferromagnetic body touch, and the point at which the spring is fully relaxed, may and may need to be different. In the characteristic diagram, this means that the characteristic curves 71 and 72 are horizontally shifted from one another and consequently a correspondingly different sum characteristic 73 results.
  • Fig. 6 shows an embodiment of a corresponding metering device 1, which has a magnet 98 as a magnetically acting element.
  • an actuator 84 is connected, which may be as described above metal bellows 4 or other pneumatically or electrically operated actuator.
  • the power transmission element 3 is again connected, with which the valve needle 10 is connected, which opens or closes the outlet opening 16 of the outlet unit 15 depending on the position of the force transmission element 3.
  • springs 7 restoring spring
  • a magnet 98 is connected, which serves as an anchor serving as an anchor member connected to the force transmission element ferromagnetic element or magnet 99 or, if the force transmission element 3 consists of a ferromagnetic material, the armature serving as an element 3 directly opposite so that both dress and support the spring force.
  • the force-displacement characteristic curve of the springs 7 does not select an area from the zero point, but only a certain section by biasing the respective spring, so that a minimum spring force is not undershot even in the closed position.
  • FIG. 7 shows such an arrangement in which an electromagnet 118 shown here in an annular manner is connected to the actuator housing 2.
  • a ferromagnetic material can be used, which then act only attractive forces, or a permanent magnet, so that the electromagnet 118 depending on polarity attractive or repulsive forces on the counterpart 99th exercises.
  • the advantage of such a structure is that both the opening and the closing stroke of the force transmission element 3 and the valve needle 10 connected to it can be accelerated by means of a corresponding polarity of the electromagnet 118.
  • FIG. 6 also applies here.
  • the metering device comprises the outlet unit 15 with the outlet opening 16, through which the metering medium flows out of the metering device, the channel 11 for feeding the metering medium from a reservoir to the outlet unit, the movable closing unit 10, whose one end closes the outlet opening in a first position and in a second position releasing the connection between the channel for supplying the metering medium and the outlet opening of the outlet unit, and an actuator unit with the actuator, which moves the closing unit back and forth between the two said positions, wherein:
  • the actuator unit includes a housing 2 in a fixed spatial relationship with the outlet unit,
  • the actuator unit includes an active expansion element 4 having one end communicating with the closing unit and the other end communicating with the housing and extending through the supply of energy in a direction not perpendicular to the closing unit,
  • the actuator unit includes a spring element 7, which is in communication with the housing and the closing unit and whose force acts counter to the non-perpendicular to the closing unit expansion of the active expansion element, and
  • the actuator unit additionally includes a magnetically acting element 98, 99, 118, which is in communication with the housing and the closing unit and whose magnetic force has a component parallel to the extension direction of the active expansion element.
  • the magnetically acting element includes a permanent magnet.
  • a component of the magnetic force of the magnetically acting element counteracts the expansion of the active expansion element 4 and decreases the further the active expansion element expands in the direction not perpendicular to the closing unit.
  • the magnetically acting element may also include an electromagnet.
  • the electromagnet is energized variable in time and the polar direction of the current supply is chosen so that its force effect contains a component parallel to the opening stroke and / or the closing stroke of the expansion element 4.

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  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

Dispositif de dosage pour la distribution d'une matière dosée liquide, comprenant un orifice de distribution (16) pour la distribution d'une matière dosée par l'unité de dosage, une unité d'obturation mobile (10) pour la fermeture et l'ouverture de l'orifice de distribution, et un actionneur (2, 3, 4, 7, 84) pour le déplacement de l'unité d'obturation entre des position de fermeture et d'ouverture de l'orifice de distribution. L'actionneur comprend un soufflet (4) couplé à unité d'obturation, qui s'allonge ou se raccourcit lorsqu'une différence de pression est créée par un fluide de pression entre son volume intérieur et son environnement extérieur, afin de déplacer rapidement l'unité d'obturation, avec une poussée importante, entre lesdites positions. L'unité de dosage convient également pour des matières dosées à viscosité relativement élevée, et ne nécessite pour ainsi dire pas d'entretien.
EP14716327.3A 2013-04-09 2014-04-09 Dispositif de dosage Active EP2945754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013006106.7A DE102013006106A1 (de) 2013-04-09 2013-04-09 Dosiervorrichtung
PCT/EP2014/057216 WO2014167033A2 (fr) 2013-04-09 2014-04-09 Dispositif de dosage

Publications (2)

Publication Number Publication Date
EP2945754A2 true EP2945754A2 (fr) 2015-11-25
EP2945754B1 EP2945754B1 (fr) 2017-03-15

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EP14716327.3A Active EP2945754B1 (fr) 2013-04-09 2014-04-09 Dispositif de dosage

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EP (1) EP2945754B1 (fr)
DE (1) DE102013006106A1 (fr)
WO (1) WO2014167033A2 (fr)

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN105772333A (zh) * 2016-05-09 2016-07-20 禹伟 一种大行程自动点胶机高压点胶头
DE102017126307A1 (de) 2017-11-09 2019-05-09 Delo Industrie Klebstoffe Gmbh & Co. Kgaa Dosiervorrichtung sowie Verfahren zum Dosieren von flüssigen Medien

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL299526A (fr) 1962-10-19
DE2553163A1 (de) 1975-11-27 1977-06-02 Ver Flugtechnische Werke Fernbetaetigtes absperrventil fuer cryogene medien
CH615987A5 (en) * 1976-07-23 1980-02-29 Sulzer Ag Injection valve for a turbocharger-washing device
DE3146030A1 (de) * 1981-11-20 1983-05-26 Siemens AG, 1000 Berlin und 8000 München Ueberdruckventil fuer behaelter
US4509057A (en) * 1983-03-28 1985-04-02 Xerox Corporation Automatic calibration of drop-on-demand ink jet ejector
DE3600009A1 (de) * 1986-01-02 1987-07-09 Jaeth Michael Einrichtung zum beruehrungslosen auftragen von elastischen dickstoffen
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
SE456727B (sv) * 1987-03-11 1988-10-31 Inst Verkstadstek Forsk Ivf Anordning foer att frammata och paafoera en viskoes substans
CH678754A5 (en) * 1988-03-22 1991-10-31 Bechtiger Edelstahl Valve arrangement for flow pipe - has valve plate and seating, with at least one sprung pipe
ES2066149T3 (es) 1989-10-10 1995-03-01 Xaar Ltd Metodo para la impresion multitono.
JPH06129563A (ja) * 1992-10-16 1994-05-10 Toyota Motor Corp 切替バルブ
CH689735A5 (de) * 1994-05-09 1999-09-30 Balzers Hochvakuum Vakuumventil.
EP1029626B1 (fr) * 1995-11-16 2004-06-23 Nordson Corporation Procédé et dispositif permettant de distribuer de petites quantités de matière liquide
EP1155748B1 (fr) * 1998-12-28 2017-04-12 Musashi Engineering, Inc. Procede et dispositif d'injection d'une quantite fixe de liquide
DE19940055C1 (de) * 1999-08-24 2001-04-05 Siemens Ag Dosierventil
DE20220800U1 (de) 2002-10-24 2004-04-08 Vermes Technik Gmbh & Co. Kg Piezoelektrisches Aktorsystem
AU2008209476B2 (en) * 2007-01-23 2012-02-02 Spraying Systems Co. Air atomizing spray nozzle with magnetically actuated shutoff valve
US7871058B2 (en) * 2007-07-25 2011-01-18 Illinois Tool Works Inc. Dual inline solenoid-actuated hot melt adhesive dispensing valve assembly
PL2734371T3 (pl) * 2011-07-22 2016-04-29 Durst Phototechnik Ag Głowica drukująca dla drukarki atramentowej

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014167033A3 *

Also Published As

Publication number Publication date
WO2014167033A3 (fr) 2015-01-08
WO2014167033A2 (fr) 2014-10-16
EP2945754B1 (fr) 2017-03-15
DE102013006106A1 (de) 2014-10-09

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