Systems for creating electrodes for polymer electrolyte membrane fuel cells include an XY stage having a heated vacuum table physically coupled to the XY stage. The vacuum table has a working face with a plurality of channels formed therein to communicate vacuum pressure from a port coupled to a vacuum source to the channels. A sheet of perforated heat-conductive material has staggered holes configured to evenly distribute the vacuum pressure from the channels through the perforated sheet. A heat-conductive wire mesh is placed over the perforated sheet, and has openings smaller than the staggered holes such that a membrane material placed on the wire mesh is not deformed by the vacuum pressure. A nanopipette or micropipette coupled to a pump is configured to deposit electrode ink onto an exposed surface of the membrane material as the controller device causes the XY stage to move the vacuum table to control deposition of the electrode ink onto the surface of the membrane material.

A device configured to jet one or more droplets of a viscous medium includes a housing at least partially defining a jetting chamber, a supply conduit that supplies the viscous medium into the jetting chamber, a jetting nozzle, an impacting device configured to force the one or more droplets of the viscous medium through the conduit of the jetting nozzle to be jetted as the one or more droplets, and a supply conduit actuator configured to adjust a hydrodynamic resistance of at least a portion of the supply conduit to viscous medium flow from the jetting chamber via the supply conduit, based on moving through the portion of the supply conduit, independently of the impacting device, to adjust a cross-sectional flow area of the portion of the supply conduit.

A method of applying a coating composition to a substrate utilizing a high transfer efficiency applicator include the steps of providing the high transfer efficiency applicator comprising an array of nozzles wherein each nozzle defines a nozzle orifice having a diameter of from 0.00002 m to 0.0004, providing the coating composition, and applying the coating composition to the substrate through the nozzle orifice without atomization such that at least 99.9% of the applied coating composition contacts the substrate to form a coating layer having a wet thickness of at least 5 microns, wherein the coating composition includes a carrier, a binder, and a radar reflective pigment or a LiDAR reflective pigment. The coating composition has an Ohnesorge number (Oh) of from about 0.01 to about 12.6, a Reynolds number (Re) of from about 0.02 to about 6,200, and a Deborah number (De) of from greater than 0 to about 1730.

A liquid material ejection device in which a plunger is efficiently accelerated. The device includes a liquid chamber communicating with an ejection port and being supplied with a liquid material, a plunger including a tip portion having a smaller diameter than the liquid chamber and is moved in the liquid chamber, an elastic member urging the plunger upward, an arm disposed in a state extending in a substantially horizontal direction, an arm driver serving as a driving source to operate the arm, and a base member on which the arm driver is disposed. The device further includes a rocking mechanism unit connected to the arm driver and rockingly supporting the arm, the arm driver includes a plurality of actuators, the arm includes a pressing portion pressing the plunger downward, the plunger is pressed by the pressing portion, and the plunger is linearly reciprocated with rocking motion of the arm.

An apparatus (10) for the assembly of lamellar packs for electrical use in electric motor machines, generators, transformers, counters, ignition coils and similar electrical equipment by gluing, comprising a die-cutting station (12) for die-cutting a sheet (15) to define strips (15′) to be superimposed one on the other to define a lamellar pack and a station (14) for gluing—by means of glue—said strips (15′) sheared from said sheet (15) and comprising means for the discrete application of an amount of glue on a surface of the sheet (15) and with said means operating synchronously with the advancement of the sheet (15) in the die-cutting station (12).

An application mechanism according to one embodiment of the present invention serves as an application mechanism that applies an application material onto a substrate using an application needle. The application mechanism according to one embodiment of the present invention includes: a holder base; a slide mechanism attached to an inside of the holder base; an application needle fixing member, to which the application needle is attached, the application needle fixing member being supported by the slide mechanism so as to be slidable in an extending direction of the application needle; and a position holding mechanism that holds a relative position of the application needle fixing member with respect to the slide mechanism.

Systems and methods for closed loop fluid velocity control for jetting are disclosed. A method includes dispensing a first volume of viscous fluid from a nozzle of a dispensing device according to a first value of an operating parameter that affects the exit velocity of the first volume. A characteristic of the first volume is measured using a sensor. The characteristic of the first volume is then compared to a range of values to determine whether the characteristic of the first volume is outside of the range. The value of the operating parameter is adjusted to a second value in response to determining that the characteristic of the first volume is outside the range. A second volume of viscous fluid is dispensed according to the second value of the operating parameter. The exit velocity of the second volume is different than the first volume.

A device configured to jet one or more droplets of a viscous medium may include a housing having an inner surface at least partially defining a jetting chamber configured to hold the viscous medium, and a flexible jetting nozzle. The flexible jetting nozzle may include a flexible conduit extending between an inlet orifice in an inner surface to an outlet orifice in an outer surface. The device may cause an increase of internal pressure of viscous medium in the jetting chamber to force one or more droplets of viscous medium through the flexible conduit and through the outlet orifice. The flexible jetting nozzle may include a flexible material. The flexible jetting nozzle may deform, to cause a cross-sectional area of the flexible conduit to dilate, in response to the increase of the internal pressure of the viscous medium in the jetting chamber.

A fluid dispenser includes a dispenser body including an actuator, a fluid body housing, and a fluid body. The fluid body housing is coupled to the dispenser body at one end and releasably coupled to the dispenser body at another end, such that the fluid body housing is pivotable between a first position in which the fluid body housing is coupled to the dispenser body at both ends and a second position in which the fluid body housing is decoupled from the dispenser body at the other end. The fluid body includes a fluid inlet and a dispensing valve. The fluid body is at least partly retained in the fluid body housing when the fluid body housing is in the first position and is removable from the fluid body housing when the fluid body housing is in the second position.

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.