Abstract: A device for conveying viscous material to an applicator has a conveying cylinder in which a double-acting conveying piston is movable to and fro. The conveying cylinder has first and second chambers separated from one another by the conveying piston. Each chamber has a material inlet and outlet. A conveying device is connected to the material inlets for the pressurized introduction of viscous material into the conveying cylinder chambers, and a valve device closes and opens the material inlets and outlets. In a first switching position, the valve device opens the first chamber material inlet and the second chamber material outlet and closes the second chamber material inlet and the first chamber material outlet and, in a second switching position, releases the second chamber material inlet and the first chamber material outlet and closes the first chamber material inlet and the second chamber material outlet.

Abstract: A metering valve for viscous materials has a housing, a material channel extending in the housing and opening into material outlet openings, and a number of valve pins, which are movably mounted in the housing, the number corresponding to the number of material outlet openings, wherein a valve seat is associated with each valve pin and each valve pin is movable between a closed position, in which it sits on the valve seat associated with it and closes one of the material outlet openings, and an open position, in which the material outlet opening concerned is exposed. The valve pins are produced from carbide and are guided in a longitudinally displaceable manner through feed-through openings in a guide block arranged at a distance from the valve seats, wherein the guide block is produced from carbide, at least on the inner surfaces of the feed-through openings facing the valve pins.

Abstract: An application nozzle for applying a viscous material to workpieces includes a nozzle body and an application duct for the viscous material, the duct extending inside the nozzle body from a material inlet opening to a material outlet opening. At least one filler element is located in the application duct, which filler element constricts the cross-section of the application duct and extends from a first end remote from the material inlet opening to a second end at the material outlet opening.

Abstract: In a method for assembling a needle valve having a housing, at least one valve needle longitudinally displaceably guided in the housing in a first spatial direction, and at least one valve seat plate, the plate for each needle has a valve seat associated with the needle, at which seat an outlet opening for a fluid can be closed and opened by back and forth movement of the relevant needle. In a first step the plate is fastened to the housing by a fastener such that it has limited movement with respect to the housing. In a second step each needle is set into a back and forth movement in which it is alternatingly placed onto and lifted up from the associated seat. In a third step the plate is fixed on the housing while the at least one needle moves back and forth.

Abstract: In a method for assembling a needle valve having a housing, at least one valve needle longitudinally displaceably guided in the housing in a first spatial direction, and at least one valve seat plate, the plate for each needle has a valve seat associated with the needle, at which seat an outlet opening for a fluid can be closed and opened by back and forth movement of the relevant needle. In a first step the plate is fastened to the housing by a fastener such that it has limited movement with respect to the housing. In a second step each needle is set into a back and forth movement in which it is alternatingly placed onto and lifted up from the associated seat. In a third step the plate is fixed on the housing while the at least one needle moves back and forth.

Abstract: A metering valve for viscous materials has a housing, a material channel extending in the housing and opening into material outlet openings, and a number of valve pins, which are movably mounted in the housing, the number corresponding to the number of material outlet openings, wherein a valve seat is associated with each valve pin and each valve pin is movable between a closed position, in which it sits on the valve seat associated with it and closes one of the material outlet openings, and an open position, in which the material outlet opening concerned is exposed. The valve pins are produced from carbide and are guided in a longitudinally displaceable manner through feed-through openings in a guide block arranged at a distance from the valve seats, wherein the guide block is produced from carbide, at least on the inner surfaces of the feed-through openings facing the valve pins.

Abstract: An application nozzle for applying a viscous material to workpieces includes a nozzle body and an application duct for the viscous material, the duct extending inside the nozzle body from a material inlet opening to a material outlet opening. At least one filler element is located in the application duct, which filler element constricts the cross-section of the application duct and extends from a first end remote from the material inlet opening to a second end at the material outlet opening.

Abstract: A device for applying a viscous material has: an application tube, which delimits an application duct running in a longitudinal direction from a material inlet opening to a material outlet opening; and a housing, which accommodates at least part of the application tube and has a material supply connection for the viscous material. The application tube has a first tube section, which is fixed on the housing and has the material inlet opening, and a second tube section, which adjoins the first tube section and has the material outlet opening at a free end. A joint connects the first tube section and the second tube section, and a drive device deflects the free end of the second tube section in a transverse direction running transversely to the longitudinal direction.

Abstract: A device for applying a viscous material has: an application tube, which delimits an application duct running in a longitudinal direction from a material inlet opening to a material outlet opening; and a housing, which accommodates at least part of the application tube and has a material supply connection for the viscous material. The application tube has a first tube section, which is fixed on the housing and has the material inlet opening, and a second tube section, which adjoins the first tube section and has the material outlet opening at a free end. A joint connects the first tube section and the second tube section, and a drive device deflects the free end of the second tube section in a transverse direction running transversely to the longitudinal direction.

Abstract: An apparatus for conveying viscous material out of a barrel-like container having a container bottom and a container wall that extends upward from the container bottom has a follower plate for closing off the container, which plate is movable in the direction toward the container bottom, lying against the inner surface of the container wall, which surface faces the container interior, and which plate has a dome that extends upward from an underside intended to lie on the viscous material, which dome opens, in the center, into a material exit opening. The apparatus has a pump for conveying the viscous material through the material exit opening. At least one displacement body projects into the dome through the material exit opening and is connected with the pump for displacement of the material situated in the dome and/or air situated in the dome, and at least one closeable venting opening vents the dome.

Abstract: An apparatus for conveying viscous material out of a barrel-like container having a container bottom and a container wall that extends upward from the container bottom has a follower plate for closing off the container, which plate is movable in the direction toward the container bottom, lying against the inner surface of the container wall, which surface faces the container interior, and which plate has a dome that extends upward from an underside intended to lie on the viscous material, which dome opens, in the center, into a material exit opening. The apparatus has a pump for conveying the viscous material through the material exit opening. At least one displacement body projects into the dome through the material exit opening and is connected with the pump for displacement of the material situated in the dome and/or air situated in the dome, and at least one closeable venting opening vents the dome.