EP4479183A1 - Piezo-aktorvorrichtung, vorzugsweise mit transversal auslenkbarer düse - Google Patents
Piezo-aktorvorrichtung, vorzugsweise mit transversal auslenkbarer düseInfo
- Publication number
- EP4479183A1 EP4479183A1 EP23703163.8A EP23703163A EP4479183A1 EP 4479183 A1 EP4479183 A1 EP 4479183A1 EP 23703163 A EP23703163 A EP 23703163A EP 4479183 A1 EP4479183 A1 EP 4479183A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piezo actuator
- rod
- actuator device
- application agent
- application
- 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.)
- Pending
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
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
-
- 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
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0426—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved along a closed path
-
- 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
- B05C5/0208—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 for applying liquid or other fluent material to separate articles
- B05C5/0212—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 for applying liquid or other fluent material to separate articles only at particular parts of the articles
- B05C5/0216—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 for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces
- B05B13/0433—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces the work being vehicle components, e.g. vehicle bodies
Definitions
- Piezo actuator device preferably with a transversely deflectable nozzle
- the invention relates to a piezo actuator device, preferably with a transversely deflectable nozzle for dispensing an application agent, e.g. B. to enable a swirl application on a component.
- an application agent e.g. B.
- a nozzle is deflected by an electric motor using an eccentric on a circular path around a central system axis (e.g. axis of rotation) in order to apply the omnidirectional seam in wider, overlapping circles.
- a central system axis e.g. axis of rotation
- the parameters for such an omnidirectional seam are therefore expanded to include the rotational speed and the deflection of the eccentric.
- One object of the invention is to provide an alternative and/or improved device for applying an application agent to a component (e.g. motor vehicle body component), in particular to enable a swirl application on the component.
- a component e.g. motor vehicle body component
- the invention relates to a piezo actuator device, z. B. for attachment to a manipulator (z. B. robot) and / or to enable a swirl application, in particular on a component such. B. a motor vehicle body part.
- the piezo actuator device includes a nozzle, in particular with a dispensing opening, for dispensing an application agent onto a component (eg a motor vehicle body component).
- a component eg a motor vehicle body component
- the application agent can, for. B. be a viscous, especially highly viscous application agent.
- the application agent can, for. B. a sealant, a polyvinyl chloride (PVC, in particular a PVC plastisol), a thick material, a paint, an adhesive, a preservative (z. B. wax) and / or an insulating material.
- PVC polyvinyl chloride
- the piezo actuator device also includes a rod (eg hollow and/or designed as a tube) having the nozzle and at least two piezo actuator devices.
- a rod eg hollow and/or designed as a tube having the nozzle and at least two piezo actuator devices.
- the piezo actuator devices are set up in particular to deflect the rod (in particular while the application agent is being dispensed) in different directions transversely (e.g. laterally, transversely, obliquely and/or essentially orthogonally) to the longitudinal axis of the rod, preferably variably to deflect This makes it z.
- the nozzle it is possible for the nozzle to be movable preferably along at least one movement path (e.g. around a central system axis).
- the at least one trajectory can, for. B. include at least one substantially circular trajectory, at least one substantially elliptical trajectory and / or at least one deviating from a circular trajectory trajectory. Alternatively or additionally z. B. at least one zigzag-shaped trajectory and / or at least one polygonal trajectory possible.
- the piezo actuator device is preferably suitable for the application of one or more patterns that can be defined in particular by means of the piezo actuator devices (eg with a highly viscous application agent).
- nozzle it is thus preferably possible for one or more trajectories other than just circular paths for the nozzle to be generated by the deflection of the nozzle by means of the piezo actuator devices, e.g. B. to be able to advantageously influence an application agent distribution in the cross section of an application agent seam.
- the at least one movement path can preferably extend (e.g. eccentrically) around a central system axis of the piezo actuator device.
- the at least one trajectory preferably forms a (z. B. open or closed) trajectory and / or orbit expediently around the central system axis.
- the nozzle by means of the piezo actuator devices z. B. along different trajectories (z. B. the system central axis) is movable.
- an application agent distribution in the cross section of an application agent seam can be advantageously influenced (z. B. changed).
- This can e.g. B. an essentially uniform application agent distribution in the cross section of an application agent seam can be achieved and/or an application agent edge accumulation in the cross section of an application agent seam can be reduced, preferably essentially avoided.
- the different trajectories can e.g. B. be geometrically different (e.g. circular and elliptical) and/or be geometrically the same but different sized (e.g. different sized circular).
- the piezo actuator device is preferably moved along the component by means of the manipulator while the application agent is being dispensed onto the component in order to produce an application (eg an application agent seam, a coating, etc.) on the component.
- an application eg an application agent seam, a coating, etc.
- the piezoelectric actuator device is mounted in a stationary manner.
- the piezo actuator device can, for. B. include a bearing device (z. B. a wobble bearing) for storing the rod.
- a bearing device z. B. a wobble bearing
- the storage facility can e.g. B. be set up to store the rod wobbling and / or to store relative to its longitudinal axis movable transversely.
- the storage facility z. B. by means of at least one elastic bearing element (expediently axially and / or radially), preferably by means of at least one in particular elastic O-ring.
- the bearing device provides a degree of freedom of movement (e.g. axial and/or radial) for the rod and the degree of freedom of movement is less than 5 mm, 2 mm, 1 mm or 0.5 mm.
- the system central axis can z. B. extend axially through the bearing device and / or z. B. be defined by a central axis of the bearing device.
- the rod it is possible for the rod to be drivable in a bearing area by means of the piezo actuator devices, preferably transversely relative to its longitudinal axis.
- the bearing area can thus preferably form a drive point for the transverse deflection of the rod.
- the storage area can e.g. B. be positioned between the bearing device and the nozzle.
- a longitudinal extension of the rod from the storage area to the outlet of the nozzle is greater than or equal to a longitudinal extension of the rod from the storage area to the storage device.
- the length of the rod from the storage area to the outlet of the nozzle can be B. by a factor of at least 1.1, at least 1.2, at least 1.5, at least 1.8 or at least 2 greater than the longitudinal extension of the rod from the storage area to the storage device.
- a deflection of the nozzle can preferably be greater than a deflection of the rod in the bearing area B2, where z. B. a deflection of the rod on the bearing device can be smaller than the deflection in the bearing area B2. (e.g.: L2 > LI and/or h2 >hl > hO).
- the piezo actuator devices can, for. B. are set up to rotate the rod with a preferably variable operating frequency between, for example, 0 Hz to at least 300 Hz, to at least 350 Hz, to at least 400 Hz, to at least 450 Hz, to at least 550 Hz, to at least 650 Hz or up to to apply at least 700 Hz.
- the piezo actuator devices can, for. B. are also set up to move the nozzle by means of the rod on at least one trajectory, preferably a circular path, which corresponds to a speed of, for example, at least 10,000, at least 15,000 or at least 20,000 revolutions per minute.
- the rod can z. B. be hollow, be formed as a tube and / or in particular a z. B. central application agent channel to lead the application agent to the nozzle.
- the rod can thus e.g. B. as a tube (z. B. nozzle tube) and / or as an elongated hollow body.
- the application agent channel can z. B. extend at least partially or completely substantially coaxially or parallel to the longitudinal axis of the rod.
- the application agent channel can z. B. extend through the storage device and / or through the storage area and / or comprise an axial inlet opening for the application agent.
- the application agent channel can z. B. extend to the nozzle and / or to the outlet of the nozzle.
- the piezo actuator device includes an applicator.
- the storage facility can e.g. B. be positioned in the applicator.
- the storage area can e.g. B. be positioned outside of the applicator.
- the application agent can preferably be fed through the applicator into the rod and/or the nozzle.
- the piezo actuator device can comprise an application agent valve for activating and deactivating the dispensing of the application agent.
- the application agent valve in particular its valve seat, z. B. can be upstream of the rod and / or positioned outside the rod.
- the application agent valve is preferably a needle valve and can thus in particular comprise a valve needle.
- the application agent valve and / or a valve seat for the valve needle is z. B. positioned in the applicator, preferably upstream of the rod.
- the piezo actuator device can, for. B. an application agent valve having a valve needle for activating and deactivating the output of the application agent, wherein preferably the valve needle can expediently at least partially extend axially in the nozzle and/or in the rod and z. B. can be flowed around by application agents.
- the valve needle can preferably be flexible (e.g. elastic) and can extend through the bearing device and/or through the bearing area.
- a valve seat for the valve rod is preferably positioned in the rod, in the nozzle and/or suitably just before the nozzle, e.g. B. in the output-side quarter, fifth or sixth of the rod. As a result, dripping of the application agent can advantageously be reduced or avoided.
- the valve needle can, for. B. at least one or at least two guide points within the rod.
- the piezo actuator devices each include a piezo actuator.
- the piezo actuator devices can, for. B. each comprise an actuating arm structure for actuating the rod, wherein the actuating arm structures can preferably be actuated (eg driven) by the respective piezo actuator.
- the respective actuating arm structure can e.g. B. be part of at least a three-bar linkage or at least a four-bar linkage lever mechanism.
- the respective actuating arm structure can be pivoted about a base joint, the respective piezo actuator is coupled to the respective actuating arm structure via a coupling joint, the respective actuating arm structure can be divided into a first (e.g. pivotable) section and a second ( z. B. axially movable) section is divided and / or the respective operating arm structure is expediently directly or indirectly coupled to the rod via a connecting joint, in particular on and / or by means of the bearing area.
- first e.g. pivotable
- a second ( z. B. axially movable) section is divided and / or the respective operating arm structure is expediently directly or indirectly coupled to the rod via a connecting joint, in particular on and / or by means of the bearing area.
- At least one of the aforementioned joints can, for. B. by a material weakening (e.g. an area of reduced flexural rigidity, in particular relative to two adjacent areas of higher flexural rigidity, and/or a local reduction in cross section), be integrally connected to the respective actuating arm structure in one piece, be designed as a flexure joint, and/or be designed to be elastically deformable.
- a material weakening e.g. an area of reduced flexural rigidity, in particular relative to two adjacent areas of higher flexural rigidity, and/or a local reduction in cross section
- the base joint can preferably form a bearing point z. B. allows rotation of the respective actuating arm structure, but preferably can prevent all displacements.
- the base joint can thus z. B. form a fixed bearing.
- the respective piezo actuator prefferably fixedly mounted in its transverse direction on one side and/or to be coupled (expediently directly or indirectly) to the respective actuating arm structure on the other side.
- the respective piezo actuator z. B. in its longitudinal direction in particular storage-free deformable.
- the respective piezo actuator can, for. B. have an elastically deformable, metallic and / or shell-shaped frame structure, preferably the frame structure as z. B. bending clamping frame and/or to increase an actuating force on the respective actuating arm structure. It is possible for at least one piezo-active element (eg at least one piezo stack) to be accommodated in the respective frame construction.
- the at least one piezoactive element can, for. Example, be made of ceramics, in particular low-voltage ceramics.
- the at least one piezoactive element can in particular act on the respective frame construction from the inside.
- the at least one piezoactive element is preferably used for longitudinally oriented deformation of the respective frame structure, z. B. to bring about a particularly transversely oriented deformation of the respective frame structure to generate an actuating force for the respective actuating arm structure.
- the at least one piezoactive element can thus preferably act on the respective frame construction essentially in the longitudinal direction of the respective frame construction, e.g. B. to generate a (particularly transversely oriented) actuating force on the respective actuating arm structure.
- the respective frame structure is preferably elongate, e.g. B. substantially elliptical to substantially diamond-shaped and / or to substantially annular or circular.
- piezo-active elements e.g. piezo stacks
- the respective frame construction it is possible for several piezo-active elements (e.g. piezo stacks) in the respective frame construction to be coupled to one another and/or to the respective frame construction in the longitudinal direction of the respective frame construction, e.g. B. to force and / or increase travel.
- the respective piezo actuator can preferably actuate the respective actuating arm structure transversely (e.g. essentially at right angles) to its longitudinal extent.
- the respective frame construction can preferably actuate the respective actuating arm structure transversely (e.g. essentially at right angles) to its longitudinal extension.
- the actuating arm structures are preferably angled to each other to act on the rod in different directions, in particular non-parallel and/or acting on the rod at an angle other than 0° and/or other than 180°.
- the piezo actuator devices such. B. are each aligned in a plane (z. B. orthogonal to the system central axis and / or to the outlet of the nozzle), at an angle of not equal to 0 ° and / or not equal to 180 ° to each other.
- the actuating arm structures, e.g. B. are each aligned in a plane (z. B. orthogonal to the system central axis and / or to the outlet of the nozzle), at an angle of not equal to 0 ° and / or not equal to 180 ° to each other.
- the piezo actuator devices in particular their actuating arm structures, can e.g. B. be set up to act on the rod at an angle of not equal to 0 ° and / or not equal to 180 °, in particular to act on the rod non-parallel to each other.
- the piezo actuator devices are set up in particular to deflect, preferably variably, deflect the rod in different, non-parallel directions transversely (e.g. laterally, transversely, obliquely and/or essentially orthogonally) to the longitudinal axis of the rod.
- the piezo actuator devices are preferably set outside of the applicator, z. B. are mounted.
- the piezo actuator device preferably the applicator, z. B. be connected to a rotary union, via the z. B. the application means can be fed and/or traced back.
- the piezo actuator device is connected to a heating device by means of which the application means can be heated, which z. B. with highly viscous application agent, especially adhesive can be advantageous.
- the piezo actuator device z. B. with a cooling device z. B. at least one Peltier element, by means of which the application means can be cooled.
- the heating device and / or the cooling device can, for. B. be installed on or in the applicator and / or be positioned appropriately in the flow direction of the application agent, upstream of the application agent valve or downstream of the application agent valve.
- the piezo actuator device preferably the applicator, z. B. include at least one sensor for measuring a temperature of the application agent and / or at least one sensor for measuring a pressure of the application agent.
- the at least one sensor for measuring a temperature of the application agent and/or the at least one sensor for measuring a pressure of the application agent is positioned, expediently in the direction of flow of the application agent, upstream of the application agent valve in order to preferably measure upstream of the application agent valve.
- the piezo actuator device can, for. B. an application agent feed (z. B. flow) and an application agent return (z. B. return) for application agent circulation include or have at least two application agent feeds, via the z. B. different application agents can be supplied and preferably dispensed by means of the nozzle.
- the piezo actuator device can thus also be designed in particular for selectively dispensing different application agents.
- the piezo actuator devices can, for. B. be set up to depending on a (z. B. adjustable) excitation energy for their respective piezo actuator, the rod expediently different far to deflect in different directions transverse to its longitudinal axis.
- a respective stroke onto the rod can be controlled in particular as a function of the respective piezo actuator excitation energy.
- the piezo actuator devices can in particular be set up to exert a respective stroke on the rod, with the respective stroke being adjustable (appropriately freely and/or arbitrarily) as a function of an excitation energy for the respective piezo actuator, preferably to at least one intermediate position between a maximum stroke and a minimum stroke.
- the excitation energy is in particular electrical excitation energy (expediently electrical voltage).
- it is therefore preferably possible to be able to set a respective stroke for the transverse deflection of the rod (preferably freely and/or arbitrarily) as an application variable, which advantageously makes it possible to generate z. B. allows different trajectories for the nozzle.
- a z. B. electronic control device is provided to control one of the respective piezo actuator device and / or the respective piezo actuator to be supplied excitation energy.
- a generator device to generate the excitation energy (eg electrical voltage, voltage signals, etc.) to be provided for the respective piezo actuator.
- an amplifying device for amplifying the excitation energy generated by the generator device is provided.
- the generator device can, for. B. have one or more generators.
- the amplifying device can expediently have one or more amplifiers.
- the controller can, for. B. be set up to control the generator device and / or the amplifier device.
- control device the excitation energy for the respective piezo actuator z. B. via the generator device and / or the amplifier device.
- the respective piezo actuator can preferably be controlled with (expediently electrical) excitation energy, in particular voltage, expediently voltage signals.
- control device can be set up to control the excitation energy for the respective piezo actuator.
- the control device is in particular an electronic control device and can, for. B. include at least one computing unit and / or at least one processor.
- the controller can, for. B. include a memory unit in which control software (z. B. a control program) and / or control logic can be stored, according to which the excitation energy for the respective piezo actuator can be controlled.
- control device is distributed with its function on a central control unit or several different hardware components and / or control units.
- the piezo actuators can, preferably by means of the control device, z. B. be independently controllable.
- the piezo actuators can, for. B. are applied with the same or different operating frequency and / or excitation energy.
- the piezo actuator device preferably allows a defined application of the application agent on the component, whereby z. B. rework can be reduced or even eliminated entirely.
- the defined application of the application agent can also advantageously reduce the consumption of application agents, whereby z. B. sustainable production can be promoted.
- the application agent is preferably viscous, in particular highly viscous.
- the respective piezo actuator preferably serves to move and/or actuate the rod, in particular indirectly, preferably via the respective actuating arm structure.
- the controller can, for. B. the respective piezo actuator z. B. directly or indirectly.
- the excitation energy for the respective piezo actuator can be B. amplified or non-amplified or reduced excitation energy by means of the amplifying device.
- the piezo actuator devices can be appropriately set up to move the rod transversely (e.g. laterally, transversely, obliquely and/or essentially orthogonally) to the longitudinal axis of the rod, preferably variably deflected.
- the rod can z. B. be formed in one piece or in several parts.
- the nozzle z. B. be formed in one piece or in several parts.
- the nozzle can e.g. B. expediently mounted directly or indirectly to the rod, z. B. solvable or insoluble. It is Z. B. also possible that the nozzle z. B. is formed as a one-piece integral part of the rod.
- the nozzle and the rod can preferably be arranged essentially coaxially with one another.
- the piezo actuator device is preferably used to produce an application (eg an application means seam, a coating and/or a swirl application, etc.) on the component.
- an application eg an application means seam, a coating and/or a swirl application, etc.
- the piezo actuator device can preferably be moved along the component by means of the manipulator while the application agent is being dispensed onto the component in order to apply an application (e.g. an application agent seam, a coating and/or a swirl application, etc.) to the component generate.
- an application e.g. an application agent seam, a coating and/or a swirl application, etc.
- the piezoelectric actuator device z. B. is mounted stationary.
- the respective actuating arm structure in particular the respective first section and/or second section, e.g. B. can be at least partially elastic, in particular to deform elastically during actuation of the rod and / or to be able to bend.
- the longitudinal axis of the rod and the central system axis can preferably be aligned substantially coaxially with one another.
- the piezo actuator device z. B. at least three or at least four piezo actuator devices and / or z. B. may comprise at least three or at least four operating arm constructions.
- the rod can preferably be designed as a tube (e.g. nozzle tube), in particular with an axial inlet opening for the application agent and/or an axial outlet opening for the application agent.
- the rod can thus z. B. be hollow, in particular an elongated hollow body.
- the invention also includes an application device with at least one piezo actuator device as disclosed herein.
- the application device can, for. B. have a single or multi-axis (z. B. at least 2, at least 3, at least 4 or at least 5-axis) manipulator, in particular robot for guiding the piezo actuator device.
- the manipulator is used in particular to move the piezo actuator device (in particular during application of the application agent) along the component, as a result of which the nozzle movements generated by the piezo actuator device and the movements generated by the manipulator are superimposed, in order to B. to be able to produce an application (e.g. an application means seam, a coating and/or a swirl application, etc.) on the component.
- an application e.g. an application means seam, a coating and/or a swirl application, etc.
- the piezo actuator device is mounted stationary and thus z. B. is not mounted on any robot or manipulator.
- the controller can, for. B. also serve to control the manipulator disclosed herein, in particular robot.
- the controller can thus z. B. the manipulator control device, in particular the robot control device.
- a detection system e.g. with one or more cameras and/or one or more lasers
- a component measurement preceding the application in time and/or to record an application result e.g. to carry out a quality control, in particular an online quality control
- the control device mentioned here can e.g. B. be set up to control the application as a function of parameters detected by means of the detection system.
- the invention also includes a method, in particular for a piezo actuator device and/or an application device as disclosed herein, so that the disclosure relating to the piezo actuator device and/or to the application device expediently also applies to the method.
- a nozzle emits an application agent onto a component and at least two piezo actuator devices direct a rod (e.g. hollow and/or designed as a tube) that has the nozzle in different transverse directions (e.g. laterally, transverse, oblique and/or essentially orthogonal) to the longitudinal axis of the rod.
- Figure 1 shows a side view of a piezo actuator device according to an embodiment of the invention
- Figure 2 shows a view of the piezo actuator device from the front
- Figure 3 shows a view of the piezo actuator device from above
- Figure 4 shows a sectional view of the piezo actuator device
- FIG. 5 shows the sectional view of FIG. 4, in particular to explain a functional/actuating principle according to an exemplary embodiment of the invention
- FIG. 6 schematically illustrates a functional/actuating principle according to an embodiment of the invention
- FIGS 7 and 8 illustrate different nozzle trajectories according to an embodiment of the invention
- Figure 9 shows an application device according to an embodiment of the invention.
- FIG. 10 shows a control scheme for a piezo actuator device according to an exemplary embodiment of the invention.
- the preferred exemplary embodiments of the invention described with reference to the figures correspond in part, with similar or identical parts being provided with the same reference symbols and for their explanation reference can also be made to the description of the other exemplary embodiments in order to avoid repetition. For purposes of illustration, not all parts are referenced in all figures.
- FIG. 9 e.g a motor vehicle body part
- the application agent can be z. B. be a viscous, especially highly viscous application agent.
- the piezo actuator device 100 comprises a nozzle 2 for dispensing an application agent onto the component 202, a rod 1 having the nozzle 2 and at least two piezo actuator devices 40, 40x.
- the piezo actuator devices 40, 40x each comprise a piezo actuator 4, 4x and an actuating arm structure 3, 3x that can be actuated, in particular driven, by the respective piezo actuator 4, 4x for actuating, in particular driving, the rod 1.
- the piezo actuator devices 40, 40x are set up to move the rod 1 transversally (e.g. laterally, transversely, obliquely and/or essentially orthogonally) in different directions that are in particular non-parallel to one another, in particular when the application agent is being dispensed. preferably variably deflect to its longitudinal axis 11, preferably depending on an electrical excitation energy (z. B. electrical voltage) for the respective piezo actuator 4, 4x.
- the nozzle 2 z. B. along at least one trajectory P in particular around a central system axis A (z. B. Figures 7 and 8) are moved, the at least one trajectory P z. B. may include at least one substantially circular trajectory, at least one substantially elliptical trajectory and / or at least one deviating from a circular trajectory trajectory.
- a particular advantage is that the piezo-actuator devices 40, 40x can be set up in order to be able to set a respective stroke on the rod 1 in an appropriately freely selectable manner, e.g. B. to at least an intermediate position between a maximum stroke and a minimum stroke.
- the respective stroke depends on the amount of excitation energy by means of which the respective piezo actuator 4, 4x is acted upon.
- a controller 60 (e.g., Figure 6) may be provided which is arranged to control the excitation energy.
- the controller 60 can, for. B. a control unit, in particular with control software and/or control logic, by means of which the excitation energy for the respective piezo actuator 4, 4x and thus the excitation energy supplied to the respective piezo actuator 4, 4x can be controlled.
- the piezo actuator devices 40, 40x are preferably aligned in one plane at an angle a of not equal to 0° and/or not equal to 180° to one another, in particular at an angle a of not equal to 0° and/or not equal to 180° and are therefore expedient to act on the rod 1 non-parallel to each other.
- a preferably variable deflection of the rod 1 by means of the piezo actuator devices 40, 40x makes it possible in particular that not only a single trajectory can be generated, but that different trajectories P can be generated for the nozzle 2 (e.g. Figures 7 and 8) .
- the one or more trajectories P can e.g. B. include at least one essentially circular trajectory (e.g. FIG. 7) and/or at least one trajectory deviating from a circular trajectory, e.g. B. a substantially elliptical trajectory (z. B. Figure 8).
- the nozzle 2 can preferably be moved along different movement paths P by means of the piezo actuator devices 40, 40x.
- an application agent distribution in the cross section of an application agent seam can be influenced.
- an essentially uniform application agent distribution in the cross section of an application agent seam can advantageously be achieved and/or an application agent edge accumulation in the cross section of an application agent seam can be reduced, preferably essentially avoided.
- the piezo actuator devices 40, 40x z. B. be set up to move the rod 1 with a preferably variable operating frequency between z. B. 0 Hz to at least 400 Hz and the nozzle 2 by means of the rod 1 at a speed of z. B. at least 10,000, at least 15,000 or at least 20,000 revolutions per minute along a trajectory P to move.
- the piezo actuator devices 40, 40x each comprise a piezo actuator 4, 4x and an actuating arm structure 3, 3x that can be actuated by the respective piezo actuator 4, 4x for actuating the rod 1.
- Double arrows schematically show the direction of actuation and driving of the respective actuation arm structure 3, 3x onto the rod 1.
- the respective actuating arm structure 3, 3x can, for. B. by means of an intermediate joint G3, G3x in a first, preferably pivotable, sub-section Sl, Six and a second, preferably axially movable, sub-section S2, S2x, wherein the respective second sub-section S2, S2x expediently via a bearing area B2 to the rod 1 can be coupled.
- the piezo actuator device 100 also has an applicator 50 which, for. B. can comprise a valve block and on the outside of which the piezo actuator devices 40, 40x can be attached.
- the rod 1 is expediently mounted in the storage area B2 by means of the piezo actuator devices 40, 40x and can be driven transversely relative to its longitudinal axis 11.
- the respective second partial area S2, S2x can expediently be coupled to the bearing area B2 in order to drive the rod 1 transversely to its longitudinal axis 11.
- the bearing area B2 thus forms a drive point for driving the rod 1, in particular transversely. B. outside of the applicator 50 positioned.
- the piezo actuator device 100 is described further below with reference to FIGS.
- a bearing device Bl is set up to support the rod 1 in a wobbling manner and/or to support it so that it can move transversely relative to its longitudinal axis 11 .
- the storage device Bl is preferably positioned in the applicator 50 .
- the storage area B2 is positioned between the storage device B1 and the nozzle 2 .
- a longitudinal extension L2 of the rod 1 from the storage area B2 to the outlet of the nozzle 2 is preferably greater than a longitudinal extension LI of the rod 1 from the storage area B2 to the storage device B1. It follows from the lever ratio of LI to L2 that a deflection h2 of the nozzle 2 is greater than a deflection hl of the rod 1 in the bearing area B2 and a deflection hO of the rod 1 on the bearing device Bl is smaller than the deflection hl in the bearing area B2 (e.g e.g.: L2 > LI and/or h2 >hl
- Small bends, deformations and/or displacements (of, for example, only a few tenths of a millimeter) can thus advantageously be sufficient to achieve a sufficiently large deflection h2 of the nozzle 2 (of, for example, at least 1 mm).
- the respective actuating arm structure 3, 3x is preferably part of at least a three-bar or at least four-bar lever mechanism.
- the respective actuating arm structure 3, 3x can, for. B. be pivotable about a base joint Gl, Glx.
- the respective piezo actuator 4; 4x can expediently be coupled to the respective actuating arm structure 3, 3x via a coupling joint G2, G2x, in particular to the respective first subsection S1, Six.
- the respective actuating arm structure 3, 3x can be divided into the first section S1, Six and the second section S2, S2x, in particular by means of an intermediate joint G3, G3x.
- the respective actuating arm structure 3, 3x, in particular the respective second partial section S2, S2x, can be coupled to the rod 1 in the bearing area B2 via a connecting joint G4, G4x.
- At least one of the aforementioned joints G1, G2, G3, G4; G1x, G2x, G3x, G4x is formed by a weakening of the material, is integrally connected to the respective actuating arm structure 3, 3x in one piece, is formed as a flexure joint, and/or is formed to be elastically deformable. Consequently, the bending and/or deformation of the respective actuating arm structure 3, 3x and/or the respective joints G1, G2, G3, G4; Glx, G2x, G3x, G4x preferably in the elastic range.
- the rod 1 is preferably designed as a hollow, suitably elongate tube and comprises a suitably central application agent channel 12 for guiding the application agent to the nozzle 2.
- the application agent channel 12 can z. B. extend through the storage device Bl and / or through the storage area B2 and z. B. have an axial inlet opening for the application agent.
- the rod 1 thus also includes, in particular, a tube.
- An application agent valve V preferably having a valve needle, can be positioned in the applicator 50 for activating and deactivating the delivery of the application agent, wherein the application agent valve V can be positioned in front of the rod 1 and/or outside of the rod 1 .
- a valve seat for the valve needle can be positioned in front of the rod 1 and/or outside of the rod 1 .
- the piezo actuator device 100 may comprise an application agent valve (not shown) having a valve needle for activating and deactivating the dispensing of the application agent and for the valve needle to extend at least in sections, preferably axially, in the rod 1 and/or in the nozzle 2 .
- the valve needle z. B. be flexible and / or extend through the storage device Bl and / or the storage area B2.
- a valve seat for the valve needle can, for. B. in the rod 1 and / or in the nozzle 2, preferably be positioned substantially directly in front of the nozzle 2. As a result, dripping of application agent can be reduced or avoided.
- the respective piezo actuator 4, 4x preferably includes an elastically deformable frame structure 4.1, 4.1x, where z. B. the frame structure 4.1, 4.1x can be designed as a bending frame and/or to increase an actuating force on the respective actuating arm structure 3, 3x.
- the respective piezo actuator 4, 4.1 is preferably elongate with a longitudinal direction L and a transverse direction C.
- the respective actuating arm structure 3, 3x is preferably a one-piece integral part of a frame 20, 20x (preferably open on at least one side), the respective piezo actuator 4, 4x z. B. can be arranged in the respective frame 20, 20x.
- the respective piezo actuator 4, 4x can be mounted in its transverse direction C on one side on the respective frame 20, 20x and fixed on the other side by means of the respective coupling joint G2, G2x on the respective actuating arm structure 3, 3x. In its longitudinal direction L, however, the respective piezoelectric actuator 4, 4x can be arranged in the respective frame 20, 20x in a manner that is preferably free of bearing and deformable.
- the respective frame construction 4.1, 4.1x and/or the respective piezo actuator 4, 4x can be at least slightly elongated and z.
- the respective frame structure 4.1, 4.1x is preferably formed circumferentially.
- the respective frame construction 4.1, 4.1x z. B. accommodated one or more piezo-active elements (e.g. one or more piezo stacks) for longitudinally oriented deformation of the respective frame construction 4.1, 4.1x, the longitudinally oriented deformation having a transversely oriented deformation of the respective frame construction 4.1, 4.1x for generating the actuating force causes the respective actuating arm structure 3, 3x.
- piezo-active elements e.g. one or more piezo stacks
- piezoactive elements can preferably be coupled to one another and to the respective frame construction 4.1, 4.1x in the longitudinal direction L of the respective frame construction 4.1, 4.1x, with z. B. in the transverse direction C of the respective frame structure 4.1, 4.1x a free space can be made available.
- the at least one trajectory P that can be generated by means of the piezo actuator devices 40, 40x preferably extends around a central system axis A of the piezo actuator device 100.
- the central system axis A can be z. B. extend centrally through the bearing device Bl and / or be defined by a central axis of the bearing device Bl.
- FIGS. 4 to 6 show the rod 1 in a non-deflected state, in particular in a basic or neutral position.
- the system central axis A is expediently aligned substantially coaxially with the longitudinal axis 11 of the rod 1 .
- Figures 7 and 8 illustrate exemplary different trajectories P of the nozzle 2 expediently around the system central axis A.
- the trajectories P can be achieved by means of the piezo actuator devices 40, 40x, in particular as a function of the excitation energy for their respective piezo actuator 4, 4x , generated and modeled.
- the at least one trajectory P can, for. B. extend eccentrically to the system central axis A and / or represent a (z. B. open or closed) orbit around the system central axis A.
- a particular advantage is that by means of the piezo actuator devices 40, 40x z. B. at least one circular trajectory P for the nozzle 2 ( Figure 7), at least one elliptical trajectory P for the nozzle 2 ( Figure 8) and/or at least one trajectory deviating from a circular trajectory can be generated ( Figure 8).
- FIG. 9 shows an application device 200, with a piezo actuator device 100 and a manipulator 201, shown only schematically, for guiding the piezo actuator device 100 and a component 202, shown only schematically.
- B. be a robot with at least 2, at least 3, at least 4 or at least 5 axes of movement.
- Manipulator 201 is used in particular to move piezo actuator device 100 (in particular during application of the application agent) along component 202 (e.g. a motor vehicle body component), resulting in a superimposition of the nozzle movements generated by piezo actuator device 100 and the movements generated by the manipulator 201 in order to be able to generate an application, in particular a swirl application, on the component 202.
- component 202 e.g. a motor vehicle body component
- the application device 200 can, for. B. include a vision system 203 shown only schematically, in particular a (z. B. camera or laser-based) detection system (z. B. with one or more cameras and / or one or more lasers), z. B. in particular to carry out a component measurement preceding the application in time and/or to record an application result (e.g. to carry out a quality control, in particular an online quality control).
- the controller 60 can, for. B. be set up to control the application as a function of parameters detected by means of the detection system.
- FIG. 10 shows a control scheme, in particular a signal processing scheme for a piezo actuator device 100 according to an exemplary embodiment of the invention.
- a control device 60 is provided, by means of which the excitation energy (e.g. electrical voltage) for the respective piezo actuator 4, 4x and thus the excitation energy supplied to the respective piezo actuator 4, 4x (e.g. via a generator device 70 and an optional amplification device 80), preferably in order to control the transverse deflection of the rod 1.
- the generator device 70 serves to generate the excitation energy for the respective piezo actuator 4, 4x, in particular to generate (e.g. essentially square-wave and/or pre-deformed) voltage signals (e.g. -IV to +7V) for the respective Piezo actuator 4, 4x.
- Control device 60 is used in particular to control generator device 70 and/or amplification device 80.
- the optional amplification device 80 serves to amplify the excitation energy generated by the generator device 70 .
- the optionally amplified excitation energy and thus the voltage signals can be fed to the respective piezo actuator 4, 4x.
- the voltage signals are z. B. essentially square-wave voltage signals.
- the respective piezo actuator 4, 4x can act on the rod 1 via the respective actuating arm structure 3, 3x.
- the shape of the respective stroke curve can essentially correspond to the curve of the voltage signals generated by the generator device 70 .
- the excitation energy and thus the voltage signals it is possible for the excitation energy and thus the voltage signals to be pre-shaped (expediently "preshaping" the voltage signals), for example in order to prevent the rod 1 from overshooting (for example in the case of rapid activation).
- hollow rod especially tube
- Bl.l bearing element preferably elastic
- Bl.2 bearing element preferably elastic
- B2 Storage area preferably drive point
- control device in particular electronic control device
Landscapes
- Coating Apparatus (AREA)
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Manipulator (AREA)
- Nozzles (AREA)
- Spray Control Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022103375.9A DE102022103375A1 (de) | 2022-02-14 | 2022-02-14 | Piezo-Aktorvorrichtung, vorzugsweise mit transversal auslenkbarer Düse |
| PCT/EP2023/052383 WO2023151993A1 (de) | 2022-02-14 | 2023-02-01 | Piezo-aktorvorrichtung, vorzugsweise mit transversal auslenkbarer düse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4479183A1 true EP4479183A1 (de) | 2024-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23703163.8A Pending EP4479183A1 (de) | 2022-02-14 | 2023-02-01 | Piezo-aktorvorrichtung, vorzugsweise mit transversal auslenkbarer düse |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20250153203A1 (de) |
| EP (1) | EP4479183A1 (de) |
| JP (1) | JP2025505706A (de) |
| KR (1) | KR20240150436A (de) |
| CN (1) | CN118715063A (de) |
| DE (1) | DE102022103375A1 (de) |
| WO (1) | WO2023151993A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090107398A1 (en) | 2007-10-31 | 2009-04-30 | Nordson Corporation | Fluid dispensers and methods for dispensing viscous fluids with improved edge definition |
| EP2156905B1 (de) | 2008-08-22 | 2012-06-27 | MAFAC ERNST SCHWARZ GmbH & Co. KG MASCHINENFABRIK | Behandlungsvorrichtung für Werkstücke |
| JP2010082306A (ja) * | 2008-10-01 | 2010-04-15 | Seiko Epson Corp | 流体噴射装置、流体噴射装置の駆動方法及び手術用器具 |
| EP2719344A1 (de) | 2012-10-11 | 2014-04-16 | Erbe Elektromedizin GmbH | Fluidchirurgisches Instrument mit variablem Strahlbild |
| DE102013102693A1 (de) | 2013-03-15 | 2014-09-18 | Vermes Microdispensing GmbH | Dosierventil und Dosierverfahren |
| DE102014015057B4 (de) | 2014-10-15 | 2019-08-01 | Atlas Copco Ias Gmbh | Vorrichtung zum Auftragen eines viskosen Materials |
| DE102016125220A1 (de) * | 2016-12-21 | 2018-06-21 | Polyplan Gmbh Polyurethan-Maschinen | Vorrichtung und Verfahren zum Aufbringen von flüssigen oder pastösen Stoffen |
| DE102017122493A1 (de) | 2017-09-27 | 2019-03-28 | Dürr Systems Ag | Applikator mit geringem Düsenabstand |
-
2022
- 2022-02-14 DE DE102022103375.9A patent/DE102022103375A1/de active Pending
-
2023
- 2023-02-01 KR KR1020247026822A patent/KR20240150436A/ko active Pending
- 2023-02-01 WO PCT/EP2023/052383 patent/WO2023151993A1/de not_active Ceased
- 2023-02-01 US US18/837,934 patent/US20250153203A1/en active Pending
- 2023-02-01 JP JP2024547441A patent/JP2025505706A/ja active Pending
- 2023-02-01 CN CN202380021847.5A patent/CN118715063A/zh active Pending
- 2023-02-01 EP EP23703163.8A patent/EP4479183A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2025505706A (ja) | 2025-02-28 |
| KR20240150436A (ko) | 2024-10-15 |
| US20250153203A1 (en) | 2025-05-15 |
| CN118715063A (zh) | 2024-09-27 |
| DE102022103375A1 (de) | 2023-08-17 |
| WO2023151993A1 (de) | 2023-08-17 |
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