Abstract: The invention relates to a valve tappet rod (1, 1?) for a valve (100, 100?) of a metering system (200) for a metering material, wherein the valve tappet rod (1, 1?) has an elongate, substantially cylindrical body which is formed at a face-side end (B) with a tappet tip (60), with a tappet head (10) at an opposite head region (A) and, therebetween, from the tappet head (10) to the tappet tip (60), at least with a first guide sleeve portion (20), a narrow portion (30), a second guide sleeve portion (40) and a fluidic portion (50), wherein an outside diameter (30d, 30d?) of the narrow portion (30) is reduced in comparison with the outside diameters (20d, 20d?, 40d, 40d?) of the guide sleeve portions (20, 40). The invention further relates to a valve (100, 100?) having such a valve tappet rod (1, 1?) and to a metering system (200) having such a valve (100, 100?) or such a valve tappet rod (1, 1?).

Abstract: The invention relates to a dosing system (1) for a dosing material having a dosing device (5) with a housing (11), the housing (11) comprising a feed channel (80) for dosing material, a nozzle (40), a discharge element (31) and an actuator unit (10) coupled to the discharge element (31) and/or the nozzle (40). The dosing device (5) further comprises a dosing material reservoir (70) which is coupled to the housing (11) or integrated into the housing (11). The dosing system (1) has a plurality of temperature control devices (2, 2?, 2?) which are each assigned to different temperature zones (6, 6?, 6?) of the dosing system (1) in order to control the temperature zones (6, 6?, 6?) differently. At least one first temperature zone (6) is assigned to the dosing material reservoir (70) and at least one second temperature zone (6?) is assigned to the nozzle (40).

Abstract: The invention relates to a dosing system (1) for a dosing material having a nozzle (40), a feed channel (44) for dosing material, a discharge element (31), an actuator unit (10) that is coupled to the discharge element (31) and/or the nozzle (40) and has a piezo actuator (60), and a cooling device (2). The cooling device (2) comprises a supply device (21, 24, 26) for feeding a precooled cooling medium into a housing (11) of the dosing system (1). The cooling device (2) is configured for direct cooling of at least one subregion of the piezo actuator (60) and/or at least one subregion of a movement mechanism (14) coupled to the piezo actuator (60) by means of the precooled cooling medium.

Abstract: The invention relates to dosing system (1) for a dosing substance, which dosing system (1) comprises a housing (11) having a nozzle (60) and a feed channel (64) for dosing substance, a discharge element (51) arranged in the housing (11) for discharging dosing substance from the nozzle (60), at least one first actuator (20), preferably a piezo actuator (20), coupled to the discharge element (51) and/or the nozzle (60), and at least one second actuator (30), preferably an expansion material element (30), coupled to the first actuator (20). The second actuator (30) is designed to set a position of the at least one first actuator (20) relative to the housing (11), particularly with respect to the discharge element (51) and/or the nozzle (60). The invention further relates to a method for controlling such a dosing system (1).

Abstract: The invention relates to a metering system (1) for a metering substance, comprising a nozzle (40), a feed channel (44) for the metering substance, a discharge element (31), and a piezo actuator (61) which is coupled to the discharge element (31) and/or the nozzle (40). The piezo actuator (61) of the metering system (1) is hermetically encapsulated in a housing (62).

Abstract: The present invention relates to a dosing system (100) with an actuator unit (60) and a fluidic unit (10) which can be coupled thereto in a detachable manner, wherein the fluidic unit (10) has a nozzle (20) an element (30), mounted in a movable manner, and the actuator unit (60) has an actuator system (90), in order to actuate the movable element (30) of the fluidic unit (10), wherein the fluidic unit (10) has a first plug coupling part (11) and the actuator unit (60) has a second plug coupling part (61), which can be plugged into one another for coupling the fluidic unit (10) to the actuator unit (60) along a plugging axis (S) and can be coupled to one another integrally. The invention additionally relates to a fluidic unit (10) and an actuator unit (60) for such a dosing system (100) and also a method for the detachable coupling of a fluidic unit (10) to an actuator unit (60) of a dosing system (100).

Abstract: The invention relates to a dosing system (1) for a dosing material having a dosing device (5) with a housing (11), the housing (11) comprising a feed channel (80) for dosing material, a nozzle (40), a discharge element (31) and an actuator unit (10) coupled to the discharge element (31) and/or the nozzle (40). The dosing device (5) further comprises a dosing material reservoir (70) which is coupled to the housing (11) or integrated into the housing (11). The dosing system (1) has a plurality of temperature control devices (2, 2?, 2?) which are each assigned to different temperature zones (6, 6?, 6?) of the dosing system (1) in order to control the temperature zones (6, 6?, 6?) differently. At least one first temperature zone (6) is assigned to the dosing material reservoir (70) and at least one second temperature zone (6?) is assigned to the nozzle (40).

Abstract: The invention relates to a dosing system (1) for dosing a dosing material. The dosing system (1) has a housing (11), comprising a nozzle (70) and a supply channel (62) for dosing material, and a discharge element (80) movably mounted in the housing (11) and an actuator unit (10) coupled to the discharge element. The actuator unit (10) comprises an actuator (12) having a membrane (13) which can be pressurized by means of a pressure medium in order to move the discharge element (80) in a discharge direction (RA). The discharge element (80) is formed separately and, for coupling to the actuator unit (10), is pressed by means of a force acting on the discharge element (80) against a side surface (19) of the membrane (13) pointing in the direction of the discharge element (80). Furthermore, the invention relates to a method for controlling a dosing system (1).

Abstract: The invention relates to a dosing system (1) for a dosing material having a nozzle (40), a feed channel (44) for dosing material, a discharge element (31), an actuator unit (10) that is coupled to the discharge element (31) and/or the nozzle (40) and has a piezo actuator (60), and a cooling device (2). The cooling device (2) comprises a supply device (21, 24, 26) for feeding a precooled cooling medium into a housing (11) of the dosing system (1). The cooling device (2) is configured for direct cooling of at least one subregion of the piezo actuator (60) and/or at least one subregion of a movement mechanism (14) coupled to the piezo actuator (60) by means of the precooled cooling medium.

Abstract: The invention relates to a metering system (1) for a metering substance, comprising a nozzle (40), a feed channel (44) for the metering substance, a discharge element (31), and a piezo actuator (61) which is coupled to the discharge element (31) and/or the nozzle (40). The piezo actuator (61) of the metering system (1) is hermetically encapsulated in a housing (62).

Abstract: The present invention relates to a dosing system (100) with an actuator unit (60) and a fluidic unit (10) which can be coupled thereto in a detachable manner, wherein the fluidic unit (10) has a nozzle (20) an element (30), mounted in a movable manner, and the actuator unit (60) has an actuator system (90), in order to actuate the movable element (30) of the fluidic unit (10), wherein the fluidic unit (10) has a first plug coupling part (11) and the actuator unit (60) has a second plug coupling part (61), which can be plugged into one another for coupling the fluidic unit (10) to the actuator unit (60) along a plugging axis (S) and can be coupled to one another integrally. The invention additionally relates to a fluidic unit (10) and an actuator unit (60) for such a dosing system (100) and also a method for the detachable coupling of a fluidic unit (10) to an actuator unit (60) of a dosing system (100).

Abstract: A drop-detection device detects a drop that escapes from a metering valve. The drop-detection device includes a light guide with first and second light-guiding elements that are arranged opposite each other at an intermediate space. A drop trajectory runs through the intermediate space such that a light beam sent out by the first light-guiding element crosses the drop trajectory and is subsequently coupled into the second light-guiding element. In addition, the drop-detection device includes a light-signal generation device that couples a pulsed light beam with a carrier frequency into the first light-guiding element. Furthermore, the drop-detection device also has a light evaluation device for evaluating the light beam coupled into the second light-guiding element to determine if a drop has been dispensed by the metering valve. A method of detecting a drop is also described.

Abstract: A drop-detection device (11, 11a, 11b) for the detection of drops (TR) that escape from a nozzle of a metering valve (DV), preferably a micro-metering valve, is described. The drop-detection device (11, 11a, 11b) comprises a signal-generation unit (20), which is configured to produce a carrier signal (TS) with a defined pulse frequency. In addition, the drop-detection device (11, 11a, 11b) has a modulation unit (30, 30a) which is configured to generate a modulated signal (MS) due to a physical interaction of the carrier signal (TS) with a drop to be detected (TR), Furthermore, the drop-detection device (11, 11a, 11b) has an evaluation unit (50), which is configured to determine if a drop (TR) has been dispensed by the metering valve (DV) based on the measurement signal (MS) under consideration of the defined pulse frequency. A method (600) of detecting a drop (TR) of a metering valve (DV) is also described.

Abstract: The invention relates to a guide system (1) for a detection device (3) for monitoring a substance (23) coming out of a nozzle orifice (5) of a metering device (2), wherein a nozzle orifice region (6) for arrangement at the nozzle orifice (5) is associated with the guide system (1), and the guide system (1) comprises at least one material body (15, 16) in which at least two guide ducts (7) are formed, which are designed to guide signal conductors (8) to the nozzle orifice region (6), wherein the end regions (14) of two guide ducts (7) facing the nozzle orifice region (6) are arranged, with regard to their central axes (9), substantially on a common straight line (G) relative to one another and are arranged, with regard to the nozzle orifice region (6), opposite one another. The invention further relates to a detection device (3) and to a metering device (2) having such a guide system (1) and to a method for configuring a detection device (3) having such a guide system (1).

Abstract: The invention describes a piezo driving circuit, comprising an input at which a temporally variable voltage signal is applied; a piezo interface for connecting terminals of a piezo actuator arrangement with at least one voltage controlled piezo actuator; a sync control circuit realized to detect the phase position of the voltage signal; and an inverter circuit between the input and the piezo interface; whereby the sync control circuit is realized to control the inverter circuit, based on the phase position of the voltage signal, such that a control voltage with a predefined voltage curve is applied at the piezo interface. The invention further describes a method of controlling a piezo actuator arrangement. The invention also describes a piezo actuator configuration comprising a piezo actuator arrangement and an inventive piezo driving circuit. The invention also describes a metering valve comprising the inventive piezo actuator configuration.

Abstract: A drop-detection device (11, 11a, 11b) for the detection of drops (TR) that escape from a nozzle of a metering valve (DV), preferably a micro-metering valve, is described. The drop-detection device (11, 11a, 11b) comprises a signal-generation unit (20), which is configured to produce a carrier signal (TS) with a defined pulse frequency. In addition, the drop-detection device (11, 11a, 11b) has a modulation unit (30, 30a) which is configured to generate a modulated signal (MS) due to a physical interaction of the carrier signal (TS) with a drop to be detected (TR), Furthermore, the drop-detection device (11, 11a, 11b) has an evaluation unit (50), which is configured to determine if a drop (TR) has been dispensed by the metering valve (DV) based on the measurement signal (MS) under consideration of the defined pulse frequency. A method (600) of detecting a drop (TR) of a metering valve (DV) is also described.

Abstract: The invention describes a dosing system (3) for a shear-thinning or thixotropic liquid to viscous dosing material. It comprises a nozzle (1) with a closure channel (55), within which a closure element (21) is controlled during operation by means of an automatic control unit (63) in an ejection direction (E) and/or retraction direction (R). To this end, the closure channel (55) is realized in at least one cross-section perpendicular to the ejection direction (E) and/or retraction direction (R) relative to the cross-section of the closure element (21) in the same plane to give an aperture gap (57) between the outer surface (S1) of the closure element (21) and the inner surface (S2) of the closure channel (55), which aperture gap (57) is shaped and/or dimensioned to form an outlet channel, at least in places, for the dosing material.

Abstract: A drop-detection device detects a drop that escapes from a metering valve. The drop-detection device includes a light guide with first and second light-guiding elements that are arranged opposite each other at an intermediate space. A drop trajectory runs through the intermediate space such that a light beam sent out by the first light-guiding element crosses the drop trajectory and is subsequently coupled into the second light-guiding element. In addition, the drop-detection device includes a light-signal generation device that couples a pulsed light beam with a carrier frequency into the first light-guiding element. Furthermore, the drop-detection device also has a light evaluation device for evaluating the light beam coupled into the second light-guiding element to determine if a drop has been dispensed by the metering valve. A method of detecting a drop is also described.

Abstract: The invention describes a piezo driving circuit, comprising an input at which a temporally variable voltage signal is applied; a piezo interface for connecting terminals of a piezo actuator arrangement with at least one voltage controlled piezo actuator; a sync control circuit realized to detect the phase position of the voltage signal; and an inverter circuit between the input and the piezo interface; whereby the sync control circuit is realized to control the inverter circuit, based on the phase position of the voltage signal, such that a control voltage with a predefined voltage curve is applied at the piezo interface. The invention further describes a method of controlling a piezo actuator arrangement. The invention also describes a piezo actuator configuration comprising a piezo actuator arrangement and an inventive piezo driving circuit. The invention also describes a metering valve comprising the inventive piezo actuator configuration.

Abstract: The invention discloses a metering valve for metering a metering material, having a valve chamber comprising an outlet aperture, a closure element arranged in or on to the valve chamber, a valve chamber casing and an actuator assembly realized to move at least the outlet aperture, preferably the valve chamber, relative to the valve chamber casing in an ejection direction and/or a retraction direction during operation such that, in at least one movement mode, metering material is expelled by the closure element through the outlet aperture by a movement of the outlet aperture in the ejection direction. The invention further discloses a metering method which can be performed by means of such a metering valve.