CN2428243Y

CN2428243Y - Melting furnace of press-casting forming machine

Info

Publication number: CN2428243Y
Application number: CN 00239240
Authority: CN
Inventors: 林利坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-15
Filing date: 2000-06-15
Publication date: 2001-05-02
Anticipated expiration: 2010-06-15

Abstract

The utility model relates to a melting furnace of a press-casting forming machine, which is proposed to provide a press-casting equipment component with the advantages of small temperature change, no gas explosion, no generation of oxide and long service life of a furnace body. The utility model comprises a furnace body, a jet nozzle, a material taking mechanism, a heating channel, and a raw material conveyer, wherein, both sides of the furnace body are respectively joined with the material taking mechanism and connected with the heating channel; the tail end of the jet nozzle of which the front end contacts a filling opening of a press-casting mold is provided with a containing tank and a liquid melting pump; the material taking mechanism is a lever which is pivoted on the wall of the furnace body, and both ends of the material taking mechanism are respectively a material ladle in the furnace body and a material discharging opening corresponding to the containing tank of the jet nozzle; the heating channel which is arranged between the raw material conveyer and the furnace body is additionally provided with a high-cycle heater.

Description

The Die casting machine smelting furnace

The utility model belongs to the die casting equipment parts, particularly a kind of Die casting machine smelting furnace.

As shown in Figure 1, known Die casting machine is included as horizontal or vertical die casting main frame 1 and smelting furnace 2.In die casting main frame 1, be provided with set of molds and pressure mechanism.Smelting furnace 2 is the rear end that is arranged at die casting main frame 1, and make at smelting furnace 2 nozzle foremost and be arranged on the feeding mouth of fixed die, and in liquation being sent into closed mould in the stock chest after, pressure mechanism in the mat stock chest imposes certain pressure of pushing again, liquation is injected in the mould, to finish the casting operation rapidly.

As shown in Figure 2, known smelting furnace 2 comprises calciner 2a, preheating furnace 2b and ingredient conveyor 2c, 2d etc.Calciner 2a comprises body of heater 21, cover plate 22, nozzle 23 and is fixed in liquation delivery device 24 on the cover plate 22.Be provided with the lower discharging opening 241 of higher charging aperture in level position 241 and level position in liquation delivery device 24, and on discharging opening 242, be provided be connected with nozzle 23 conduit 25.

During use, earlier will deliver to preheating furnace 2b for ingots such as magnesium, aluminium, zinc by ingredient conveyor 2c heats to about 270 ℃, ingot after another ingredient conveyor 2d is with preheating is delivered in the calciner 2a and is heated to more than 650 ℃ again, makes to the fusion of ingots such as magnesium, aluminium, zinc is in a liquid state to be placed in the body of heater 21 to use for die casting.The liquid level that is placed in the molten metal 26 in the body of heater 21 generally remains at the bottom of charging aperture 241 and the nozzle between 23 the level height, promptly is higher than charging aperture 241 and is lower than nozzle 23 bottoms.When the piston 243 of liquation delivery device 24 is upwards taken out, molten metal liquation 26 just can be flowed into by charging aperture 241 naturally, to enter the position that reaches contour with the liquid level of liquation in the conduit 25 in the whole piston cylinder 244 that is full of liquation delivery device 24 and along discharging opening 242; Make piston 243 to pressing down again, just make liquation 26 continue to push ahead along conduit 25 through discharging opening 242, and in nozzle 23 is delivered to the stock chest of compression mod, to carry out the die casting operation.

As mentioned above, the temperature of known smelting furnace 2 calciner 2a must remain on more than 650 ℃ for a long time, ingots such as ability dissolved magnesium, aluminium, zinc.Yet after adding ingots such as solid-state magnesium, aluminium, zinc once more, the temperature in the calciner 2a will descend immediately, thereby causes the variation rapidly of cold and hot temperature.Moreover when directly dropping into ingots such as general magnesium, aluminium, zinc among the calciner 2a without preheating, can produce blast and the too much phenomenon of oxide because of the excess moisture that raw material itself contains, and the accumulation of crossing polyoxide will make calciner 2a efficient reduce, and cause breaking because of the heat conduction difficulty causes body of heater 21 each position temperature inequality; Even if raw material through preheating furnace 2b heat to 270 ℃ with the process that subtracts oxygen in, it also may produce foregoing problems.Therefore, general known calciner 2a is very difficult to the control of its heating-up temperature, and will break naturally and necessary the replacing after using to 7～8 months; In addition, add ingots such as solid-state magnesium, aluminium, zinc once more and cause the excessive number of times of temperature spread, in the hope of prolonging service life,, and then to have increased the manufacturing cost of body of heater 21 so that the capacity of general known calciner 2a body of heater 21 is all done is very big for reducing.

The purpose of this utility model provides that a kind of variations in temperature is little, the generation of avoiding gas explosion and oxide, increase the body of heater Die casting machine smelting furnace of service life.

The utility model comprises body of heater, nozzle, material fetching mechanism, heat tunnel and ingredient conveyor; Both sides with the body of heater of electric heater heating are connected with material fetching mechanism respectively and are connected with heat tunnel; The front end of nozzle and the inlet of compression mod are the place's state that connects, and are provided with tank and liquation pump in the tail end of nozzle; Material fetching mechanism is the lever that is hubbed on the furnace body wall, and its two ends are to be positioned at body of heater and can to make material spoon that liquation automatically flows into and corresponding to the discharging opening of nozzle tank; The heat tunnel that is arranged between ingredient conveyor and the body of heater has been set up the high frequency heater.

Because the utility model comprises body of heater, nozzle, material fetching mechanism, heat tunnel and ingredient conveyor; Both sides with the body of heater of electric heater heating are connected with material fetching mechanism respectively and are connected with heat tunnel; The nozzle tail end at the inlet place of connecing of front end and compression mod is provided with tank and liquation pump; Material fetching mechanism is the lever that is hubbed on the furnace body wall, and its two ends are to be positioned at the material spoon of body of heater and corresponding to the discharging opening of nozzle tank; The heat tunnel that is arranged between ingredient conveyor and the body of heater has been set up the high frequency heater.During operation, solid metallic raw materials such as the magnesium that blends, aluminium, zinc are delivered to heat tunnel through ingredient conveyor, and make the temperature of raw material in course of conveying (transport distance) and improve gradually in time by the high frequency heater, earlier by softening again so that fusion be in a liquid state behind the metal naturally in the inflow body of heater; And make body of heater keep the temperature of liquation with constant temperature; Swinging up and down by material fetching mechanism then, so that the material spoon has been contained the interior molten metal of body of heater and it has been guided to discharging opening with in the tank that flows into the nozzle tail end, again by the liquation pump with the molten metal in the tank in nozzle is pumped to compression mod, so that carry out the die casting operation, not only variations in temperature is little, and avoid gas explosion and oxide generation, increase body of heater service life, thereby reach the purpose of this utility model.

Fig. 1, be horizontal type die-casting shaping machine structure schematic isometric.

Fig. 2, be known furnace construction diagrammatic side view.

Fig. 3, be the utility model structural representation cutaway view.

Below in conjunction with accompanying drawing the utility model is further elaborated.

As shown in Figure 3, the utility model comprises body of heater 31, nozzle 32, material fetching mechanism 33, heat tunnel 34 and ingredient conveyor 35.

Both sides with the body of heater 31 of electric heater heating are connected and are connected with heat tunnel 34 with material fetching mechanism 33 respectively.

The inlet of the front end of nozzle 32 and compression mod 36 keeps connecing place's state, is provided with tank 321 and liquation pump 322 in the tail end of nozzle 32.

Material fetching mechanism 33 is for being hubbed at the lever on body of heater 31 walls, and its two ends are the discharging opening 332 that is positioned at body of heater 31 and the liquation 37 automatic material spoons that flow into 331 are reached corresponding to nozzle 32 tanks 321.

Heat tunnel 34 has been set up high frequency heater 341.Heat tunnel 34 is arranged between ingredient conveyor 35 and the body of heater 31.

During operation, solid metallic raw materials such as the magnesium that blends, aluminium, zinc are delivered to heat tunnel 34 through ingredient conveyor 35, and the raw metal that will in heat tunnel 34, carry by high frequency heater 341 heating, make it finish and flow in the body of heater 31, and keep the temperature of liquation 37 with constant temperature to being fused into the fusion processes of molten metal 37 fully by softening gradually; Swinging up and down by material fetching mechanism 33 then, so that material spoon 331 has been contained the interior molten metal 37 of body of heater 31 and it has been guided in the tank 321 of discharging opening 332 with inflow nozzle 32 tail ends, again by liquation pump 322 with the molten metal 37 in the tank 321 in nozzle 32 is pumped to compression mod 36, so that carry out the die casting operation.

As mentioned above, solid metallic raw materials such as magnesium, aluminium, zinc are in the process of heating fusion, system is passed through solid metallic raw materials such as fritter magnesium, aluminium, zinc lentamente by heat tunnel 34, by high frequency heater 341 heat fused, and melting raw materials is not the melting temperature that quickly is heated to more than 650 ℃ therebetween, system continues to heat with high frequency heater 341 to the raw material of a certain unit quantity, make the temperature of raw material in course of conveying in time (transport distance) increase and improve gradually, earlier by softening again so that fusion be in a liquid state behind the metal naturally in the inflow body of heater 31.Therefore the utility model can not take place to drop into the phenomenon that produces blast in the high-temperature smelting pot suddenly because of moisture content of raw material reaches low temperature feedstock greatly when the fusion raw material, and safe, the temperature of heat tunnel 34 is control easily also.

In addition, body of heater 31 only need keep the temperature of molten metal 37, so its Controllable Temperature is built in temperature constant state, than the easy control of temperature of the calciner of commonly using.And molten metal 37 when entering body of heater 31 in it moisture evaporate fully, so can regenerable oxide or explosion phenomenon in body of heater 31, safe, and then service life is longer naturally; Molten metal 37 can be supplied on a small quantity at any time again, thus the volume of body of heater 31 design if enough just can, do not need very greatly, the electric power of holding temperature also can reduce, and then its cost and energy resource consumption also comparatively generally calciner is cheap, and have the value on the industry.

Claims

1, a kind of Die casting machine smelting furnace, it comprises ingredient conveyor; It is characterized in that it also comprises body of heater, nozzle, material fetching mechanism and heat tunnel; Both sides with the body of heater of electric heater heating are connected with material fetching mechanism respectively and are connected with heat tunnel; The front end of nozzle and the inlet of compression mod are the place's state that connects, and are provided with tank and liquation pump in the tail end of nozzle; Material fetching mechanism is the lever that is hubbed on the furnace body wall, and its two ends are to be positioned at body of heater and can to make material spoon that liquation automatically flows into and corresponding to the discharging opening of nozzle tank; The heat tunnel that is arranged between ingredient conveyor and the body of heater has been set up the high frequency heater.