METHOD FOR DISPENSING DROPLETS OF A VISCOUS MATERIAL

• Main Authors: CIARDELLA, ROBERT, MAIORCA, PHILLIP, FISKE, ERIK, BABIARZ, ALEC, QUINONES, HORATIO
• Format: Patent
• Language: English; French; German
• Published: 22.06.2016
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BLASTING; BOTTLES, JARS OR SIMILAR CONTAINERS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUID HANDLING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; OPENING, CLOSING; PERFORMING OPERATIONS; PRINTED CIRCUITS; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; REFRIGERATORS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; WEAPONS

Methods for dispensing small amounts of a viscous material onto a workpiece. The narrow-profile dispensing apparatus (10) includes a fluid chamber (28), a nozzle (35), and a valve seat disk (62; 136) representing individual components that are removable from a main body (22) of the dispensing apparatus (10) for cleaning and/or replacement. The nozzle (35) is coupled with the fluid chamber (28) by a heat transfer body (44) that may be cooled by, for example, a cooling fluid routed through an air pathway (86, 88, 90) defined in the heat transfer body (44). The main body (22) of the dispensing apparatus (10) may be cooled by air exhausted from an air cavity (80) of a pneumatic actuator (78, 80) regulating the movement of a needle (22) to control the flow of viscous material in the dispensing apparatus (10).