摘要:
Die Erfindung betrifft ein Verfahren zum Zuführen eines Schmier- oder Trennmittels aus einer Dosierstation (14) zu in einem Pressraum (12) einer Tablettenpresse (10 angeordneten Presswerkzeugen über eine die Dosierstation mit dem Pressraum verbindende Zuführleitung (22), wobei zumindest der Pressraum der Tablettenpresse gegenüber der Umgebung unter einem Unterdruck steht, wobei eine Druckmessung in der Zuführleitung (22) und/oder dem Pressraum (12) erfolgt, und wobei ein zwischen der Dosierstation (14) und dem Pressraum (12) an der Zuführleitung angeordnetes Absperrventil (28) nur geöffnet wird und nur in der geöffneten Stellung gehalten wird, wenn aufgrund der Druckmessung ein Freigabesignal vorliegt. Die Erfindung betrifft außerdem ein entsprechendes System.
摘要:
Device for the removal and suction of powders from the outer surface of one or more powder drawing pipes in apparatus for powder painting/enamelling, in which said powder drawing pipes fluidically connect means to deliver the powders to one or more replaceablepowder containers and in which the pipes may be inserted into and extracted from the powder containers. The device comprises one or more scraper elements for the removal of powders deposited on said side surface and each of said scrapers is associated with the outer side surface of a single pipe so that each pipe and scraper element associated with it are mobile in relation to one another. The device also comprises means for suction of the removed powders from each scraper element.
摘要:
An apparatus (10) and method for applying a thermoplastic powder to threads located in a bore of an internally threaded fastener (40) having a powder supply conduit (12) in communication with a powder source and a powder application conduit defining a first passageway (22) having a powder discharge port and a second passageway (26) having a powder inlet port located adjacent the discharge port which is in communication with a powder collection system. The powder application conduit is movable for insertion into and through the bore of the fastener and into engagement with the powder supply conduit. The engagement forms a nozzle which directs powder through the powder discharge port onto the threads of the fastener and retrieves excess powder through the powder inlet port for conveyance to the powder collection system.
摘要:
This process includes three modules that could be defined as follows: the first one would include the feeding of the pieces by means of antielectrostatic conveyor belts with heating means, a second module would be the plastic powder blowing point on the thread to be treated and the third one, a powder suction system able to reutilize the 100 % of the powder not impregnated in the treatment.
摘要:
Eine Vorrichtung zum Auftragen von elektrisch aufgeladenem Pulver auf einen geerdeten elektrisch leitfähigen Gegenstand (8) hat einen Auftragkopf (10) mit einem Hohlraum (1), der eine Pulveraustrittsöffnung (6) aufweist. In den Hohlraum münden eine Speiseleitung (2) zum Zuführen eines Pulverluftgemisches und eine Absaugleitung (4) für das Pulverluftgemisch. Wird die Vorrichtung nahe genug an eine zu beschichtende Oberfläche eines Gegenstandes gebracht, so tritt aufgrund der elektrostatischen Anziehungskraft zwischen dem geerdeten, elektrisch leitfähigen Gegenstand (8) und den elektrostatisch aufgeladenen Pulverpartikeln Pulver aus der Pulveraustrittsöffnung aus und gelangt auf die Oberfläche. Bei Vergrößern des Abstandes der Pulveraustrittsöffnung von der Oberfläche nimmt die elektrostatische Anziehungskraft mit dem Quadrat des Abstandes ab. Die Absaugleistung (4) ist so bemessen, daß nach Überschreiten eines Sicherheitsabstandes von der Oberfläche überhaupt kein Pulver mehr aus der Pulveraustrittsöffnung austritt, sondern das über die Speiseleitung zugeführte Pulver vollständig abgesaugt wird.
摘要:
The invention relates to a process for treating surfaces by means of a mixture of air and powder introduced through a powder nozzle (46), whereby the velocity of the outflow of the powder particles used from the powder nozzle (46) is substantially less than 40 m/s. Furthermore, the invention is related to a device for treating surfaces comprising a pressure unit (52) and a multi-nozzle tool (40) comprising at least two powder nozzles (46). Additionally, the invention relates to the use of the process and/or device according to the invention for powder-based painting/coating of surfaces along with or without a process for cleaning, whereby the surface to be treated is pretreated with a suitable base coat liquid and while said base coat liquid is still wet, by utilizing the method and the device according to the invention, powder paint/coating agent is sprayed to attach onto/react with the base coat liquid spread on the surface to form the final coat of paint/coating.
摘要:
Es wird eine neue Pulverrückgewinnungseinheit für Pulverbeschichtungsanlagen vorgestellt. Damit eine konstante Qualität für die Wiederverwendung des Pulvers erreicht wird umfasst die Pulverrückgewinnungseinheit eine dosierte Zumischung von Frischpulver mittels einer Frischpulverzufuhr (3). Anschliessend an die Frischpulverzufuhr (3) erfolgt ein gleichmässiges Vermischen des Pulvers mittels einem Ultraschallsieb (5). Dabei wird das Pulver gleichzeitig elektrostatisch neutralisiert. Die Pulvermischung gelangt aus dem Pulverbehälter (6) direkt zu den Pulverpistolen der Pulverbeschichtungsanlage.
摘要:
An apparatus for spraying powder coating material includes a rotatable turret which moves articles to and from a work station. A powder spray gun is operable to spray a pattern onto each of the articles in turn while the article is at the work station. The powder flows through the spray gun as a series of pulses. A diverter assembly is operable to divert a portion of each pulse of powder away from the nozzle to more sharply define the pulse. An excess powder collector draws a flow of powder away from the work station. A virgin powder container supplies powder to a powder collector container which supplies powder to a powder feed container which supplies powder to the spray gun. Sensors associated with the virgin, collector and feed containers ensure that a predetermined quantity of powder is maintained in each container. During transport of powder from the virgin and collector containers, the containers and their associated pumps are vibrated to facilitate the flow of powder. The powder spray gun is mounted on a three axis adjustment assembly to enable the powder spray gun nozzle to be accurately positioned relative to an article at the work station.
摘要:
An apparatus and method for utilizing and controlling finer particles in a powder coating system returns the finer particles to the spraying apparatus to be sprayed on parts by the system. Finer particles are continuously removed from the system by application onto parts, and the accumulation of fines is thereby prevented. The finer particles may be sprayed through specially adapted spray guns, which also permits the utilization of the special advantages of spraying fine pdwder materials. By removing fine powder particles from the system before they build up, the present invention improves the powder coating operation in various respects.