Abrégé

Provided by the present invention is a double-station transverse cutting machine, which carries out vertical extrusion cutting, so that the machining efficiency is high, and the yield is high. The double-station transverse cutting machine comprises a machine frame; a line cutting device; a pallet conveying line; a double-station pallet-receiving and blank-receiving assembly comprising a first station pallet-receiving and blank-receiving assembly and a second station pallet-receiving and blank-receiving assembly; and a double-station synchronous tracking pallet device comprising a left station tracking pallet device and a right station tracking pallet device. The machine frame is enclosed to form a machining region. The vertical extrusion center of an external extruder is located in the machining region. The left station tracking pallet device and the right station tracking pallet device are separately arranged on two sides of the machining region in a width direction thereof. The left station tracking pallet device and the right station tracking pallet device each comprise a horizontal traversing mechanism, a lifting mechanism, and an open supporting frame. The lifting mechanism is fixedly mounted to a vertical column on a corresponding side of the machine frame. An output end of the lifting mechanism is provided with a mounting frame for the horizontal traversing mechanism, and an output end of the horizontal traversing mechanism is fixedly connected to the open supporting frame.

Classes IPC  ?

• B28B 13/04 - Éjection des objets façonnés
• B28B 11/16 - Appareillages ou procédés pour le traitement ou le travail des objets façonnés pour diviser les objets façonnés par découpage après extrusion

Abrégé

An uniaxial vacuum intensive blast furnace hematite extruder, comprising an electric driving motor (1), an extruding cylinder (2), a porous sieve plate (3), an extrusion cone (4), a spiral extrusion shaft (5) and a vacuumizing system (6), wherein the extruding cylinder (2) comprises a feeding section (201) and a conveying section (202) which are connected in sequence, and an inner cavity of the feeding section (201) is tapered with an inner diameter gradually decreasing towards one side of the conveying section (202); the porous sieve plate (3) is fixedly mounted at a joint between the feeding section (201) and the conveying section (202) of the extruding cylinder (2); the extrusion cone (4) is connected to a terminal end of the conveying section (202) of the extruding cylinder (2); the spiral extrusion shaft (5) comprises a mandrel (501) and a spiral blade (502); the spiral blade (502) is mounted on the mandrel (501) inside the extruding cylinder (2) and comprises a charging section (502a), a compression section (502b) and an extrusion section (502c) which are arranged in sequence; the charging section (502a) has a taper that fits with the inner cavity of the feeding section (201) of the extruding cylinder (2), and spiral pitches of the charging section (502a), the compression section (502b) and the extrusion section (502c) sequentially reduce; and the vacuumizing system (6) is in communication with the conveying section (202) of the extruding cylinder (2). Continuous granulation is achieved by means of intensive extrusion by vacuumizing, the porosity of an extruded product is low, and the compactness and the cold and hot mechanical strength are both high.

Classes IPC  ?

• C22B 1/24 - AgglutinationBriquetage

Abrégé

Disclosed in the present invention is a single-stage vacuum extruder, comprising a stirring cylinder, a stirring spiral, a flaring material conveying cylinder, an extrusion spiral and an extrusion cavity, wherein one end of the flaring material conveying cylinder is connected to the stirring cylinder, and the other end of the flaring material conveying cylinder is connected to the extrusion cavity; the stirring spiral is rotatably arranged in the stirring cylinder, the extrusion spiral is rotatably arranged in the flaring material conveying cylinder, and the stirring spiral is coaxially and fixedly connected to the extrusion spiral; a feeding slot is formed on the stirring cylinder; the size of an inner cavity of the flaring material conveying cylinder is gradually increased in a conveying direction of the flaring material conveying cylinder to be conical, and the radius of a blade of the extrusion spiral is increased along with the increase in the size of the inner cavity of the flaring material conveying cylinder; a front porous grid plate is arranged at a butt joint part between the flaring material conveying cylinder and the stirring cylinder, and a rear porous grid plate is arranged between the flaring material conveying cylinder and the extrusion cavity; and an air pumping chamber is arranged on the flaring material conveying cylinder close to the front porous grid plate. By means of the single-stage vacuum extruder of the present invention, functions such as material stirring, vacuum pumping and compact green body extrusion are realized on a single-stage structure, thereby reducing the manufacturing cost of the whole apparatus, and facilitating cleaning of the apparatus.

Classes IPC  ?

• B29C 48/395 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple
• B29C 48/76 - ÉventsMoyens de dégazage
• B28C 1/22 - Appareillages ou procédés pour obtenir ou traiter de l'argile pour traiter les substances non fluides contenant de l'argile spécialement adaptés pour l'homogénéisation, la désagrégation ou le conditionnement de l'argile non fluide ou pour la séparation d'éléments non désirés combinés à des moyens de conditionnement par chauffage, humidification ou traitement sous vide
• B29C 48/025 - Disposition ou conception générales des installations
• B28B 3/22 - Fabrication d'objets façonnés en utilisant des pressesPresses spécialement adaptées à ce travail dans laquelle le matériau est extrudé par vis
• B29C 48/69 - Filtres ou tamis pour la matière à mouler
• B28C 1/16 - Appareillages ou procédés pour obtenir ou traiter de l'argile pour traiter les substances non fluides contenant de l'argile spécialement adaptés pour l'homogénéisation, la désagrégation ou le conditionnement de l'argile non fluide ou pour la séparation d'éléments non désirés pour l'homogénéisation, p. ex. par mélange, par malaxage

Abrégé

An iron ore powder briquetting method, comprising: (i) adding water to iron ore powder, limestone powder, cement and a pore-forming agent to be mixed well, so that the mixture has certain plasticity; (ii) adding the plastic mixture to an extruder (1) capable of reaching 4 Mpa for vacuum treatment; and (iii) connecting an extrusion molding mold (3) to an outlet of the extruder (1), driving a piston or screw of the extruder (1) to extrude the plastic mixture from die holes (4) of the extrusion molding die (3) to obtain columnar iron powder blocks, each die hole (4) being a taper hole, and the area of the feed end being greater than that of the discharge end. An extrusion molding mold (3) for iron ore powder briquetting, wherein a plurality of die holes (4) are formed on the extrusion molding die (3), each die hole (4) is a taper hole, and the area of the feed end is greater than that of the discharge end. Columnar powder iron blocks are obtained by extrusion with an extruder having an extrusion pressure of 4 Mpa or above, and after natural drying, the strength is high, sintering is not required, pollution is avoided, the yield is large, and energy consumption is reduced.

Classes IPC  ?

• C22B 1/24 - AgglutinationBriquetage