摘要:
A sand introducing type sand molding machine is provided, wherein the apparatus produces a sand mold by leading molding sand into a molding flask or a molding space and filling the space with it by using compressed air, and controlling the pressure-variation inside the sand tank to cause it to correspond to the pattern shape by supplying the compressed air. The apparatus comprises a sand tank 1 for pressing the molding sand by the compressed air that is equipped with compressed air supplying devices to fluidize the molding sand, a communicating tube 2 that communicates with the sand tank 1, a plurality of adjusting means 5 for adjusting the pressure and flow of the compressed air that are installed in parallel, and each outlet of which is connected to the communicating tube 2, and each inlet of which is connected to the source of the compressed air 4a, an electro-pneumatic proportional valve 6, of which the supply and discharge ports are respectively connected to the source of the compressed air 4b and to the communicating tube 2, a pressure-detecting means 7 that is provided on the sand tank 1 for detecting the pressure inside it, and a controller 8 that controls the operations of the plurality of the adjusting means 5 and the electro-pneumatic proportional valve 6 that is electrically connected to the plurality of the adjusting means 5 and the pressure-detecting means 7 and the electro-pneumatic proportional valve 6.
摘要:
Zur Herstellung von Formen oder Kernen für Gießereizwecke aus einer Mischung (M) aus Formstoff oder Sand und wenigstens einem Binder wird die Mischung (M) mittels einer Mischvorrichtung (20) gemischt und mit Hilfe einer Zuführeinrichtung (30) wenigstens einer Sandvorratseinheit (40) einer Kern- oder Formherstellungsvorrichtung (50) zugeführt, wobei der mischungsfreie Bereich (21) der Mischvorrichtung (20) wenigstens zeitweise und/oder die zwischen der Mischvorrichtung (20) und der Kern- oder Formherstellungsvorrichtung (50) befindliche Zuführeinrichtung (30) und/oder die Sandvorratseinheit (40) hinter der Zuführeinrichtung (30) und vor der Kern- oder Formherstellungsvorrichtung (50) mittels einer Flüssigkeit (71) befeuchtet oder feucht gehalten wird, wobei die zum befeuchten dienende Flüssigkeit (71) durch wenigstens einen Ultraschallzerstäuber (60) zu einem schwebefähigen Aerosol zerstäubt und der Mischvorrichtung (20) und/oder der Zuführeinrichtung (30) und/oder der Sandvorratseinheit (40) über Rohrleitungen (81, 82, 83) zugeführt wird.
摘要:
The purpose of the present invention is to provide an apparatus for molding a mold and a method for molding a mold which can prevent foundry sand from becoming attached to an inner surface of a sand hopper and to make the structure of the apparatus simple. The apparatus supplies foundry sand into a molding space formed by a pattern plate, a flask, and a filling frame that are placed on a pattern carrier by means of a sand-filling device. Then the apparatus squeezes the foundry sand in the molding space by means of a squeezing device to mold a mold. The apparatus comprises a sand hopper that stores foundry sand in its inside. The sand hopper is disposed above the flask and the filling frame. The apparatus further comprises an openable louver gate disposed in the sand hopper. The apparatus further comprises an opening and closing device for opening and closing a sand-feeding opening. The sand-feeding opening is an opening for supplying the foundry sand into the sand hopper. The opening and closing device is disposed above the sand hopper. The apparatus further comprises an air-blowing chamber attached to the inner surface of the sand hopper.
摘要:
Zum Zeit- und Arbeitsaufwand sparenden Austausch einer an einer Dichthaube (9) einer Kernschiessanlage arretierten, verschmutzten Filterplatte (8) wird diese nach Lösen der Arretierung auf eine Begasungskammer (6) abgelegt und durch deren seitliche Herausbewegung aus der Kernschiessanlage in Eingriff mit einer Aufnahme (15) einer schwenkbaren Plattenhalterung (14) gebracht. Ein anschliessendes Zurückbewegen der Begasungskammer (6) ohne Filterplatte zu der Kernschiessanlage (1) gibt die Bahn frei zum Schwenken der Plattenhalterung (14) und damit Positionieren einer eine gereinigte Filterplatte (8) tragenden zweiten Aufnahme (17) in die dadurch frei gewordene Position. Ein erneutes Hin- und Herbewegen der Begasungskammer (6) dient der Aufnahme der gereinigten Filterplatte (8) und deren Zurückbewegung zur Dichthaube (9) der Kernschiessanlage (1), um sie an dieser zu arretieren. Durch drei in gegenseitigem Abstand von 120° um eine gemeinsame Achse (19) angeordnete Plattenaufnahmen (15, 16, 17) der Plattenhalterung (14) ergibt sich für den Plattenaustausch eine besonders günstige Arbeitsposition,
摘要:
This aims to provide a core setting method and an apparatus in a flaskless top bottom part-shaping machine, which can make the entire equipment containing a part shaping machine and can bring a core highly precisely close to a bottom part. Core holding means (51) holding a core (70) and a first carriage (52) carrying the core holding means (51) are brought close by a second carriage (53) to a top flask (2), which is positioned in a mold releasing mechanism (12) and is being raised by the drive of a mold flask turning/moving mechanism (13). The core holding means (51) and the first carriage (52) are transferred to the rising top flask (2). Subsequently, the core holding means (51) and the first carriage (52) are lowered through the top flask (2) by the drive of the mold flask turning/moving mechanism (13), thereby to bring the core (70) close to or into contact with a bottom part. After this, the core (70) is released from the held state in the core holding means (51), and is set in the bottom part.
摘要:
The present invention provides a flaskless molding machine that can use a matching plate of different thicknesses. The flaskless molding machine has two molding flasks that have a matching plate sandwiched between them, the two molding flasks being positioned in a way such that one of opening ends of the molding flasks is opposed to each other and each of the other opening ends of the molding flasks is engaged with a squeezing board, and a pair of spaces is formed, into which spaces molding sand is filled by air through each of the openings for introducing the molding sand, disposed on a wall of each of the two molding flasks that are opposed to each other, the flaskless molding machine thus constituted being able to mold two molds by squeezing the molding sand with the squeezing boards.