TWI759139B - Three-chamber multi-runner vacuum hot mold continuous casting system and method thereof - Google Patents

Abstract

The invention relates to a three-chamber multi-runner vacuum hot mold continuous casting system and a method thereof. It comprises a feeding unit, a heating and melting unit, a continuous casting and forming unit, a heat energy generating unit, a vacuum unit and a protective gas generation unit. The metal ingot to be melted is input into the feeding unit, and then the metal ingot to be melted is poured into the heating and melting unit from the feeding unit, and the heat energy output by the heat energy generating unit is used to melt the metal ingot to be melted to form a molten metal. Then the molten metal is sent to the continuous casting and forming unit, and metal wires are directly and continuously extruded by the continuous casting and forming unit. During the operation of the feeding unit, the heating and melting unit, and the continuous casting and forming unit, the internal air is removed by the vacuum unit, and protective atmosphere is input by the protective gas generating unit, so that the internal state of the feeding unit, the heating and melting unit, and the continuous casting and forming unit is kept oxygen-free to ensure the quality of the molded metal wires. By using the above system and method, special alloy conductor wires with high strength, high electrical conductivity, bending resistance, and fatigue resistance can be continuously molded.

Description

Three-cavity multi-channel vacuum hot mold continuous casting system and method

The invention relates to a three-cavity multi-channel vacuum hot-mold continuous casting system and method, in particular to a three-cavity type metal wire which is suitable for high-strength plating, high conductivity, bending resistance and fatigue resistance. Multi-channel vacuum hot mold continuous casting system and method.

Copper wire is currently the most widely used signal transmission material, such as cables for power transmission, conductive wires for electronic instruments or products, and even control wires for advanced medical equipment or special instruments. The traditional method of producing copper wire is to first melt copper and secondary raw materials in a furnace, and smelt to form a metal ingot. After the metal ingot is cooled, the copper wire is stretched and formed by drawing technology. The copper wire produced is loose in structure, low in electrical conductivity and tensile strength, which cannot meet the use of special occasions; and the formed metal ingot needs to be repeated in the air to form the copper wire. Exposing the industrial process to the air environment will easily oxidize the copper, which will lead to the unstable quality of the finished copper wire. In addition, after casting, it needs to be cooled and then rolled and stretched. The processing time is long, and it cannot be automated and continuous production. The length depends on the size of the metal ingot, and the copper wire cannot be extended indefinitely.

Please refer to Taiwan TWI669170B invention patent case, which is a metal wire continuous casting device, which is applied to the metal wire continuous casting operation of a roller belt continuous casting wheel. A shaping part holds a molten metal, so that the molten metal is cooled and crystallized in the first shaping part, and is continuously cast into a metal wire. Cast metal wire of unlimited length. However, because the continuous casting operation is exposed to the air, the metal is easily oxidized in contact with the air, resulting in unstable product quality; in addition, the continuous casting technology in this case is through the rotation of the roller belt continuous casting wheel. The molten metal is continuously brought into the mold cavity of the closed geometry formed by the roller-belt continuous casting wheel and the shaping element. To prevent the molten metal from oozing out of the cavity of the closed geometry, that is, the contact surface between the roller-belt casting wheel and the shaping element must have extremely high precision, which will increase the roller-belt continuous casting wheel and shaping. It is difficult to make the components; in addition, the long-term contact between the roller-belt continuous casting wheel and the shaping element causes wear and tear, which not only leads to the inability of the roller-belt continuous casting wheel and the shaping element to be tightly sealed, but also affects the The precise size of the finished metal wire rod, and even to improve this problem, it is necessary to frequently replace the roller-belt continuous casting wheel and the shaping element to maintain the quality of the finished metal wire rod. Quality; the above-mentioned deficiencies are not conducive to the mass production of metal wires and seriously affect the competitiveness of the industry.

Now, the inventors of the present invention have developed the technology of the present invention under the tireless spirit, considering that continuous casting of high-quality metal wires is one of the primary goals that the industry needs to achieve.

The main purpose of the present invention is to provide a three-cavity multi-channel vacuum hot-mold continuous casting system and method, mainly through three-cavity uninterrupted operation of feeding cavity, preheating cavity, continuous casting cavity, etc. Each chamber is evacuated to maintain a vacuum environment, and at the same time, an atmosphere is input to block the contact between the molten metal and the air, so as to ensure that the formed metal wire has the excellent quality of high strength, high conductivity, bending resistance and fatigue resistance, and is suitable for various precision occasions.

The purpose of the present invention is achieved by the following technologies: a three-cavity multi-channel vacuum hot mold continuous casting system, which includes a feeding unit, a heating and melting unit, a continuous casting molding unit, a heat energy generating unit, a vacuuming unit and a protective gas A generating unit; wherein: the vacuuming unit draws out the air in the feeding unit, the heating and melting unit, and the continuous casting unit, so that the feeding unit, the heating and melting unit, the continuous casting unit The inside of the cavity of the casting unit maintains a vacuum state; the protective gas generating unit sends the generated protective atmosphere into the inside of the feeding unit, the heating and melting unit, and the cavity of the continuous casting unit, through all the The protective atmosphere prevents oxidation of the ingot to be melted and the molten metal inside the cavity of the feeding unit, the heating and melting unit, and the continuous casting unit; the ingot to be melted is input into the inlet. The feeding unit is poured into the heating and melting unit from the feeding unit, and the heat energy generating unit generates heat energy, and the heat energy is sent to the heating and melting unit. The metal ingot to be melted is melted to form molten metal, and the molten metal is sent to the continuous casting forming unit, and the continuous casting forming unit directly and continuously extrudes the metal wire (casting); the continuous casting The forming unit includes a crucible and a casing, the crucible is arranged in the casing, a heating element is arranged around the periphery of the crucible, and the casing has a second interlayer, and a temperature maintaining element is arranged in the second interlayer , the crucible has a feeding groove and a discharging groove, the feeding groove and the discharging groove are connected by a channel, and the feeding groove accepts the molten metal output by the heating and melting unit, and the discharging groove is The material trough is connected with at least two discharge ports, the discharge ports are connected to the forming casting mold, the temperature maintaining element is also provided on the periphery of the forming casting mold, and the casting cooling mechanism is provided at the outlet end of the forming casting mold. The forming metal wire is cooled in a direction parallel to the forming metal wire; the casting cooling mechanism includes an outer ring sleeve and an inner ring sleeve, and the inner ring sleeve is penetrated inside the outer ring sleeve, A ring groove is formed between the peripheral wall of the inner ring sleeve and the peripheral wall of the outer ring sleeve, and a plurality of perforations obliquely penetrating the peripheral wall are provided at the corresponding ring grooves, and the oblique direction of the perforations is set by The inlet end into which the casting enters and exits towards the casting The outlet end of the cooling liquid penetrates obliquely, the outer ring sleeve is provided with a cooling liquid input portion corresponding to the annular groove, and the cooling liquid input portion inputs cooling liquid through the annular groove and is output from the obliquely arranged perforations.

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the feeding unit includes a feeding hopper, a cavity, a container and a rotating mechanism; the feeding hopper is arranged on the cavity, so The container is suspended in the cavity, the rotating mechanism controls the container to stand upright or overturn and pour, the top end of the cavity is communicated with the feeding hopper, and the bottom end of the cavity is tapered and connected with the hopper. The heating and melting units communicate with each other.

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the heating and melting unit includes a furnace cavity and an outer shell, the furnace cavity is arranged inside the outer shell, and the furnace cavity Connected with the bottom end of the cavity, the heat energy generated by the thermal energy generating unit is supplied to the furnace cavity, the outer shell has a first interlayer, and a thermal insulation layer is arranged in the first interlayer.

In the above three-cavity multi-channel vacuum hot-mold continuous casting system, the thermal energy generating unit is a high-frequency generator.

In the above three-cavity multi-channel vacuum hot-mold continuous casting system, a control valve is provided between the heating and melting unit and the continuous casting and forming unit.

In the above three-cavity multi-channel vacuum hot-mold continuous casting system, the perforations arranged obliquely are arranged at equal angular intervals.

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the continuous casting forming unit further includes a sprue switch, the sprue switch is provided corresponding to the discharge port, and includes a sprue switch The power source and the bar are opened and closed, the bar is provided with a hole that penetrates horizontally, and the opening and closing power source of the sprue controls the rotation of the bar, so that the hole on the bar is connected to the outlet correspondingly. The material outlet or the hole on the rod is staggered from the outlet.

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the continuous casting forming unit further includes a liquid level detector, and the liquid level detector is correspondingly arranged in the crucible, so The liquid level detector is electrically connected to the control valve, and the liquid level detector detects the high or low liquid level of the metal liquid in the crucible to control the timing of opening or closing the control valve.

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the channel of the crucible is provided with a liquid level bolt, and the height of the liquid level bolt is adjusted to change the size of the channel diameter , to control the flow of molten metal from the feed chute into the discharge chute.

In the above three-cavity multi-channel vacuum hot-mold continuous casting system, the protective atmosphere is an inert gas.

In the above three-cavity multi-channel vacuum hot-mold continuous casting system, the inert gas is nitrogen gas or/and argon gas.

The three-cavity multi-channel vacuum hot-mold continuous casting system as described above, further comprising a casting pulling unit, which applies a pulling force to guide the castings formed and cooled by the continuous casting forming unit to output at a constant velocity .

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the casting pulling unit includes a power source, a transmission assembly and a plurality of pulling pulleys, the power source drives the transmission assembly to operate, and makes the The transmission assembly drives the pulling pulleys, the pulling pulleys are arranged in pairs at the top and the bottom, and the pulling pulleys arranged in pairs at the upper and lower sides are provided with guide grooves corresponding to each other, and the guide grooves are arranged along the The axis of the pulling pulley is radially arranged, and the rotation directions between the two pulling pulleys arranged in pairs at the upper and lower sides are different from each other.

The above three-cavity multi-channel vacuum hot-mold continuous casting system further includes a casting winding unit, the casting winding unit includes a winding power source and a winding frame, and the winding power source controls And drive the reeling frame to rotate.

The above three-cavity multi-channel vacuum hot-mold continuous casting system, wherein the casting rewinding unit further includes a rewinding timing controller, and the rewinding power source receives the power generated by the rewinding timing controller. Activate the winding control signal and stop the winding control signal.

A three-cavity multi-channel vacuum hot mold continuous casting method is that after the metal ingots to be melted are input into a feeding unit to a certain amount, the feeding unit is controlled to pour the metal ingots to be melted into a heating and melting process. In the unit, a heat energy generating unit is used to melt the metal ingots to be melted in the heating and melting unit to form molten metal, and the molten metal is sent from the heating and melting unit to the continuous casting and forming unit, and Controlling the internal temperature of the continuous casting forming unit cavity to be higher than the liquidus temperature of the metal ingots to be melted, and then connecting The metal wire rod is continuously extruded and formed through the forming mold of the continuous casting forming unit; wherein, the continuous extrusion is performed from the feeding of the molten metal ingot into the feeding unit to the feeding of the molten metal into the continuous casting forming unit. In the process of forming the metal wire, the vacuum state is maintained, and a protective atmosphere is input to avoid oxidation of the metal; the metal wire being formed is sprayed with cooling liquid at the outlet end of the forming mold, and the cooling liquid spray direction is along the extrusion direction. The cis-crystal direction of the formed metal wire makes the heat of the metal wire transfer from the outlet end of the forming mold to the cooling zone along the casting direction, so that the molten metal at the outlet end of the forming mold maintains its shape by surface tension And in the process of continuous drawing, it gradually solidifies into a metal wire.

1: Feeding unit

11: Feed end

12: Discharge end

13: into the hopper

14: Cavity

15: Container

16: Rotary mechanism

2: Heating and melting unit

21: Furnace cavity

22: Outer shell

23: The first mezzanine

24: Thermal insulation layer

25: Control valve

3: Continuous casting unit

31: Crucible

311: Feed chute

312: Discharge chute

313: Channel

314: discharge port

32: Shell

33: Heating element

34: Second mezzanine

35: Thermal insulation layer

36: Forming mold

361: Thermal insulation layer

37: Casting cooling mechanism

371: Outer ring sleeve

372: inner ring sleeve

373: Ring groove

374: Piercing

375: Cooling liquid input

38: Sprue switch

381: Sprue opening and closing power source

382: Bar

383: Hole

39: Liquid level detector

30: Liquid level bolt

4: Thermal energy generating unit

5: Vacuum unit

6: Shielding gas generating unit

7: Casting pulling unit

71: Power Source

72: Transmission components

73: Pull Pulley

731: Guide slot

8: Casting winding unit

81: Rewinding power source

82: Rolling rack

83: Winding timing controller

F: cis-crystal direction

Figure 1: Block schematic diagram of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention

The second figure: the schematic diagram of the structure of the three-cavity multi-channel vacuum hot mold continuous casting system of the present invention

The third figure: the schematic diagram of the structure of the feeding unit, the heating and melting unit, and the continuous casting unit of the present invention

Figure 4: Schematic diagram of the structure of the feeding unit and the heating and melting unit of the present invention

Figure 5: Schematic diagram of the three-dimensional structure of the feeding unit of the present invention

Figure 6: Schematic diagram of the state in which the container of the feeding unit of the present invention is pouring metal ingots

Figure 7: Schematic diagram of the structure of the continuous casting molding unit of the present invention

The eighth figure: the three-dimensional appearance view of the crucible of the present invention

The ninth figure: the perspective view of the combination relationship between the crucible and liquid level detector of the present invention and the sprue switch

Figure 10: Schematic diagram of the relationship between the crucible discharge opening and the bar hole of the present invention

Figure 11: Schematic diagram of the relative position of the structure between the forming mold and the casting cooling mechanism of the present invention

Figure 12: perspective exploded view of the casting cooling mechanism of the present invention

The thirteenth figure: the combined cross-sectional view of the casting cooling mechanism of the present invention

Figure 14: perspective view of the casting pulling unit of the present invention

In order to make the technical content used in the present invention, the purpose of the invention and the effect achieved by the present invention more completely and clearly disclosed, it is explained in detail below, and please refer to the disclosed drawings and drawing numbers: please refer to the first , the second picture.

The three-cavity multi-channel vacuum hot mold continuous casting system of the present invention includes: a feeding unit 1, a heating and melting unit 2, a continuous casting molding unit 3, a heat energy generating unit 4, a vacuuming unit 5 and a protective gas generating unit 6; Among them: the feeding unit 1 has the feeding end 11 and the discharging end 12, and the discharging end 12 and the feeding end 12; The hot-melting unit 2 is connected and connected; the vacuuming unit 5 is connected with the feeding unit 1, the heating and melting unit 2, and the continuous casting unit 3, so that the The air is drawn out to keep the inside of the cavities of the feeding unit 1, the heating and melting unit 2, and the continuous casting unit 3 in a vacuum state; the heat energy generating unit 4 heats the heating and melting unit 2, and casts the metal to be melted in the heating and melting unit 2. The block is melted into molten metal; and the protective gas generating unit 6 is also connected with the feeding unit 1, the heating and melting unit 2, and the continuous casting unit 3, and a protective atmosphere can be generated, and the generated protective atmosphere can be sent to the feeding unit 1. , inside the cavity of heating and melting unit 2 and continuous casting unit 3 to prevent the generation of molten metal ingot to be melted in feeding unit 1 and molten metal in heating and melting unit 2 and continuous casting unit 3 through protective atmosphere Oxidation phenomenon.

That is, when the metal ingots to be melted are input to the feeding unit 1 to a certain amount, the feeding unit 1 will automatically pour these metal ingots to be melted into the heating and melting unit 2, and the heat energy generating unit 4 will heat the incoming metal ingots. The metal ingots to be melted in the melting unit 2 are melted to melt into molten metal, and then the molten metal is sent to the continuous casting unit 3, and the continuous casting unit 3 directly and continuously extrudes the metal wire rods. ; And when the metal ingots to be melted are input into the feeding unit 1, the heating and melting unit 2, and the molten metal is input into the continuous casting unit 3 and the process of continuous casting is performed, the vacuuming unit 5 will continue to The action draws out the air in the feeding unit 1, the heating and melting unit 2, and the continuous casting unit 3 to ensure the vacuum state inside the cavities of the feeding unit 1, the heating and melting unit 2, and the continuous casting unit 3; at the same time, the protective gas is generated Unit 6 will also continuously send the generated protective atmosphere into feeding unit 1, heating and melting unit 2, continuous casting and forming unit In the interior of the cavity of the element 3, the oxidation of the molten metal ingot and the molten metal is prevented through a protective atmosphere. Preferably, the protective atmosphere is an inert gas, especially nitrogen or argon or a mixture of nitrogen and argon.

Please refer to Figures 3 to 5. In a preferred embodiment of the three-cavity multi-channel vacuum hot mold continuous casting system of the present invention, the feeding unit 1 includes a feeding hopper 13, a cavity 14, a container 15 and a rotating mechanism 16; the feeding hopper 13 has a feeding end 11. It is placed on top of the cavity 14 and communicated with the top of the cavity 14. The container 15 is a vessel with an opening facing upwards. The output shaft is connected to the container 15, so that the container 15 can be controlled upright or overturned by the forward and reverse rotation of the output shaft of the rotating mechanism 16. The block is placed by the feeding end 11 of the feeding hopper 13 and then dropped into the container 15 . In this way, the metal ingots to be melted are quantitatively fed from the feeding end 11 of the hopper 13, so that the metal ingots to be melted fall into the container 15, and then the rotating mechanism 16 rotates its output shaft to drive the container 15 to overturn and dump , in order to pour out the metal ingots to be melted in the container 15, and then pass through the guide of the conical discharge end 12 at the bottom of the cavity 14, so that the metal ingots to be melted enter the heating and melting unit 2. Inside the furnace cavity (as shown in the sixth figure); the dumped container 15 will reverse its output shaft through the rotating mechanism 16, and the linked container 15 will return to the upright state, waiting for the next time the hopper 13 is put into the metal to be melted. yuan.

The above-mentioned rotating mechanism 16 drives the container 15 to turn over to remove the to-be-waited items in the container 15. The action of pouring out molten metal ingots helps to stir and mix these metal ingots to be melted, especially when more than two kinds of metal ingots are to be melted for continuous casting to form alloy metal wires, more than two kinds of metal ingots can be melted. The metal ingot is thoroughly mixed.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the heating and melting unit 2 includes a furnace cavity 21 and an outer shell 22, the furnace cavity 21 is arranged inside the outer shell 22, and the furnace The cavity 21 is communicated with the bottom end of the cavity 14 , and the heat energy generated by the thermal energy generating unit 4 is supplied to the furnace cavity 21 . Avoiding the dissipation of high temperature in the furnace cavity 21 and blocking the heat energy from the outside world can not only maintain the temperature of the molten metal, but also protect the safety of staff from being scalded. The thermal insulation layer 24 is preferably a refractory cotton material.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the thermal energy generating unit 4 is a high-frequency generator, which utilizes the high-frequency electromagnetic field of the high-frequency generator to generate high temperature to convert solid metal melted into a liquid state.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, a control valve 25 is provided between the heating and melting unit 2 and the continuous casting unit 3, and the opening and closing of the control valve 25 is controlled by the control valve 25. The molten metal in the furnace cavity 21 enters into the continuous casting forming unit 3 to perform the operation of die casting and forming the metal wire.

Please refer to Figures 3, 7, 8, 9, 10 and 11 together below. In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the continuous casting unit 3 includes a crucible 31 and a casing 32 , the crucible 31 is arranged in the casing 32 , and The crucible 31 is provided with a heating element 33 around the outer ring, and by heating the molten metal, the molten metal is kept at the required continuous casting temperature; the heating element 33 is preferably a carbon-silicon heating rod. The casing 32 has a second interlayer 34, and a thermal insulation layer 35 is arranged in the second interlayer 34 to prevent the temperature of the molten metal from dissipating and the staff from being scalded. The crucible 31 has a feeding chute 311 and a discharging chute 312. The feeding chute 311 and the discharging chute 312 are connected by a channel 313. The feeding chute 311 receives the molten metal output by the heating and melting unit 2, and the discharging chute 312 communicates at least Two discharge ports 314, the discharge port 314 is connected to the forming mold 36, and the forming mold 36 is preferably made of graphite pipes. A thermal insulation layer 361 is also provided on the periphery of the forming mold 36 to prevent the molten metal from dissipating in the forming mold 36 and affecting the quality of the formed metal wire. The thermal insulation layers 35 and 361 are preferably refractory cotton materials. In addition, the present invention is a system of hot mold continuous casting, which is characterized by hot molds. Therefore, the temperature of the forming mold 36 must be maintained above the freezing point temperature of the metal to be continuously cast, preferably set higher than the freezing point of the metal to be continuously cast. Temperature 5~15℃.

In a preferred embodiment of the three-cavity multi-channel vacuum hot mold continuous casting system of the present invention, the casting cooling mechanism 37 includes an outer ring sleeve 371 and an inner ring sleeve 372 (refer to Figures 12 and 13). The sleeve 372 is penetrated inside the outer ring sleeve 371, and a ring groove 373 is formed between the peripheral wall of the inner ring sleeve 372 and the peripheral wall of the outer ring sleeve 371. The perforation 374, the oblique direction of the perforation 374 is obliquely penetrating from the inlet end of the casting (formed metal wire) to the outlet end of the casting leaving, and the outer ring sleeve 371 corresponding to the ring groove 373 is provided with a cooling liquid input part 375, The cooling liquid input part 375 inputs the cooling liquid through the annular groove 373 and outputs it from the obliquely arranged perforations 374, and directly cools the formed casting, especially the oblique orientation of the perforations 374, so that the output cooling liquid is connected with the same metal wire. The casted along-crystal direction F flows out to ensure the quality of the continuous casting of the metal wire. In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the obliquely arranged through holes 374 are arranged at equal angular intervals, and the through through holes 374 are arranged at equal angular intervals, so that the self-piercing holes 374 are arranged at equal angular intervals. The cooling liquid sprayed out can uniformly and stably cool the continuously cast metal wire rod, so as to avoid affecting the solidification interface of the metal wire rod.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the continuous casting unit 3 further includes a sprue switch 38 (see Figures 9 and 10), and the sprue switch 38 is a Corresponding to the discharge port 314 of the crucible 31, it includes a sprue opening and closing power source 381 and a bar 382. The bar 382 is provided with a horizontally penetrating hole 383, and the sprue opening and closing power source 381 can drive the bar. 382 is rotated, so that when the hole 383 of the rod 382 is rotated to the state corresponding to the discharge port 314 of the crucible 31, the discharge groove 312 of the crucible 31 communicates with the discharge port 314 through the hole 383, and the discharge groove 312 is continuous The molten metal is supplied to the discharge port 314 for smooth continuous casting of the metal wire; and when the sprue is opened and closed, the power source 381 can drive the rod 382 to rotate so that the hole 383 on the rod 382 staggers the discharge port of the crucible 31 At 314 hours, the discharge slot 312 of the crucible 31 and the discharge port 314 are not connected, and the molten metal in the crucible 31 cannot enter the discharge port 314 for continuous casting. The bar 382 is preferably made of graphite.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the continuous casting unit 3 further includes a liquid level detector 39 (see Figure 9), and the liquid level detector 39 corresponds to Set in the crucible 31, and the liquid level detector 39 is electrically connected to the control valve 25, and the liquid level detector 39 detects the high or low liquid level of the metal liquid in the crucible 31 and then controls the control valve 25. Turn timing on or off. In a preferred embodiment, four levels are set in the crucible 31, from top to bottom are "high", "high", "low", "very low", when the liquid level detector 39 When it is detected that the molten metal level in the crucible 31 is in a “low” state, the control valve 25 will be notified to open, so that the molten metal that has been melted in the heating and melting unit 2 enters the feeding slot 311 of the crucible 31 , until the liquid level detector 39 detects that the metal liquid level in the crucible 31 reaches the "high" state, the liquid level detector 39 will notify the control valve 25 to close, and stop heating the molten metal in the melting unit 2. The finished molten metal enters into the feeding tank 311 of the crucible 31 . If the liquid level detector 39 detects that the molten metal level in the crucible 31 is in the "extremely high" or "extremely low" state, it means that the molten metal level is in the "high" or "low" state. , the control valve 25 does not actually perform the closing or opening action. Therefore, in the "extremely high" or "extremely low" state, a warning signal, such as a flashing light or a warning sound, will be generated at the same time to notify the staff to overhaul.

In the preferred embodiment of the three-cavity multi-channel vacuum hot mold continuous casting system of the present invention (refer to the ninth figure), the channel 313 of the crucible 31 is provided with a liquid level bolt 30, which is mainly able to pass through the adjustment liquid. The 30 sets of bit bolts are arranged at the high and low positions in the channel 313 to change the channel The size of the cross-sectional area of 313, and then control the flow of molten metal from the feeding chute 311 into the discharging chute 312, and the control of the flow is related to the wire diameter of the metal wire formed by continuous casting.

In a preferred embodiment of the three-cavity multi-channel vacuum hot mold continuous casting system of the present invention, the three-cavity multi-channel vacuum hot mold continuous casting system of the present invention further includes a casting pulling unit 7 (see the first , Figures 2 and 14), is used to apply tension to guide the constant velocity output of the castings that are continuously cast and cooled by the continuous casting unit 3.

Preferably, the casting pulling unit 7 includes a power source 71, a transmission assembly 72 and a plurality of pulling pulleys 73. The power source 71 drives the transmission assembly 72 to rotate, so that the transmission assembly 72 can drive the pulling pulleys 73 to rotate. The upper and lower parts of the 73 series are arranged in pairs, and the upper and lower pairs of the pulling pulleys 73 are provided with guide grooves 731 corresponding to each other on the wheel surfaces. At the same time, the guide grooves 731 corresponding to the upper and lower pulleys 73 form a wire groove together, and between the upper and lower pulleys 73 arranged in pairs, the direction of rotation is towards each other; in this way, when the power source 71 When the transmission assembly 72 is driven to rotate so that the transmission assembly 72 drives the upper and lower paired pulling pulleys 73 to rotate toward each other, the metal wires output from the forming mold 36 can be pulled out in sequence. Preferably, the upper and lower paired pulling pulleys 73 can be arranged in arrays, so that the operation of pulling the metal wire can be more stable, and can even further straighten and shape the formed metal wire. The speed at which the wire is drawn is as important as the temperature of the forming mold 36 and must be coordinated so that the solidification interface of the formed wire is close to the die opening of the forming mold 36, so the speed of drawing must be avoided Too fast, because the pulling speed is too fast, the solidified interface will leave the outside of the forming mold 36, resulting in the outflow of molten metal that is high temperature and has not been cooled and shaped.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, it further includes a casting winding unit 8 (as shown in the first and second figures), and the casting winding unit 8 includes a winding The power source 81 and the retracting frame 82, the retracting power source 81 controls and drives the retracting frame 82 to rotate. Through the process of driving the winding frame 82 to rotate by the winding power source 81 , the formed metal wire is wound on the winding frame 82 in sequence.

In a preferred embodiment of the three-cavity multi-channel vacuum hot-mold continuous casting system of the present invention, the casting rewinding unit 8 further includes a rewinding timing controller 83 (refer to Figures 1 and 2). The device 83 senses the information of the hanging length of the metal wire to generate the control signal for starting and stopping the winding, and transmits the pre-winding power source 81, so that the winding power source 81 drives the winding frame 82 to rotate or stop the rotation.

The above-mentioned examples are only some embodiments of the present invention, and are not intended to limit the present invention. According to the creative spirit and characteristics of the present invention, those made with slight changes and modifications should also be included in the scope of this patent.

To sum up, the embodiment of the present invention can indeed achieve the expected use effect, and the specific technical means disclosed by it have not only not been seen in similar products, but also have not been disclosed before the application, which fully complies with the patent law. According to the regulations and requirements, it is really grateful to file an application for an invention patent in accordance with the law, and ask for the review and approval of the patent.

1: Feeding unit

2: Heating and melting unit

3: Continuous casting unit

4: Thermal energy generating unit

5: Vacuum unit

6: Shielding gas generating unit

7: Casting pulling unit

8: Casting winding unit

83: Winding timing controller

Claims (16)

A three-cavity multi-channel vacuum hot-mold continuous casting system comprises a feeding unit, a heating and melting unit, a continuous casting unit, a heat energy generating unit, a vacuuming unit and a protective gas generating unit; wherein: the vacuuming unit will The air in the feeding unit, the heating and melting unit, and the continuous casting and forming unit is drawn out, so that the inside of the cavity of the feeding unit, the heating and melting unit, and the continuous casting and forming unit is maintained in a vacuum state; The protective gas generating unit sends the generated protective atmosphere into the cavity of the feeding unit, the heating and melting unit, and the continuous casting unit, and the protective atmosphere is prevented from being in the feeding unit, the The heating and melting unit, the metal ingot to be melted and the molten metal in the cavity of the continuous casting unit are oxidized; the metal ingot to be melted is input into the feeding unit to a certain amount, and the poured into the heating and melting unit, the heat energy generating unit generates heat energy, the heat energy is sent to the heating and melting unit, and the metal ingot to be melted in the heating and melting unit is melted to form a metal The molten metal is sent to the continuous casting unit, and the metal wire (casting) is directly and continuously extruded from the continuous casting unit; the continuous casting unit includes a crucible and a shell, and the crucible The pot is arranged in the casing, the outer periphery of the crucible is provided with a heating element, the casing has a second interlayer, and a temperature maintaining element is arranged in the second interlayer, and the crucible receives the heating and melting unit. For the molten metal output from the element, the crucible is provided with at least two discharge ports, the discharge ports are connected to the forming mold, the temperature maintaining element is also provided on the periphery of the forming mold, and the outlet end of the forming mold is provided with a casting cooling mechanism , the casting cooling mechanism cools the formed metal wire in the direction of crystallization along with the metal wire; the casting cooling mechanism includes an outer ring sleeve and an inner ring sleeve, and the inner ring sleeve passes through Inside the outer ring sleeve, a ring groove is formed between the peripheral wall of the inner ring sleeve and the peripheral wall of the outer ring sleeve, and a plurality of perforations obliquely penetrating the peripheral wall are provided at the corresponding ring grooves, so The oblique setting direction of the perforation is from the inlet end where the casting enters to the outlet end where the casting leaves the outlet. The input cooling liquid is output from the obliquely arranged perforations through the annular groove. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 1, wherein the feeding unit comprises a feeding hopper, a cavity, a container and a rotating mechanism; the feeding hopper is provided in the feeding unit Above the cavity, the container is suspended in the cavity of the feeding unit, the rotating mechanism controls the container to stand upright or turn over and dump, and the cavity of the feeding unit The top end communicates with the feeding hopper, and the bottom end of the cavity of the feeding unit is tapered and communicates with the heating and melting unit. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 2, wherein the heating and melting unit comprises a furnace cavity and an outer shell, the furnace cavity is arranged inside the outer shell, and the The furnace cavity and the cavity of the feeding unit The bottom end of the furnace is connected, the heat energy generated by the heat energy generating unit is supplied to the furnace cavity, and the outer shell has a first interlayer, and a thermal insulation layer is arranged in the first interlayer. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 3, wherein the thermal energy generating unit is a high-frequency generator. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 1, 2, 3 or 4, wherein the continuous casting unit further comprises a sprue switch, and the sprue switch corresponds to the discharge It is provided with a sprue opening and closing power source and a bar, the bar is provided with a horizontally penetrating hole, and the sprue opening and closing power source controls the rotation of the bar, so that the bar is on the The holes are correspondingly connected to the discharge port or the holes on the rod are staggered from the discharge port. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 5, wherein a control valve is provided between the heating and melting unit and the continuous casting and forming unit. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 6, wherein the continuous casting unit further comprises a liquid level detector, and the liquid level detector is correspondingly arranged on the crucible Inside, the liquid level detector is electrically connected to the control valve, and the liquid level detector detects the high or low level of the metal liquid in the crucible to control the timing of opening or closing the control valve . The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 7, wherein the crucible has a feeding chute and a discharging chute, and the feeding chute and the discharging chute communicate with each other by a channel , the channel is provided with a liquid level bolt, adjust the height of the liquid level bolt The low position changes the size of the diameter of the channel, and controls the flow rate of the molten metal from the feeding chute into the discharging chute. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 5, wherein the perforations arranged obliquely are arranged at equal angular intervals. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 5, wherein the protective atmosphere is an inert gas. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 10, wherein the inert gas is nitrogen gas or/and argon gas. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 5, further comprising a casting pulling unit, which applies a pulling force to guide the castings formed and cooled by the continuous casting forming unit Constant speed output. The three-cavity multi-channel vacuum hot mold continuous casting system according to claim 12, wherein the casting pulling unit comprises a power source, a transmission assembly and a plurality of pulling pulleys, the power source drives the transmission assembly to operate, and The transmission assembly is made to drive the pulling pulleys, the pulling pulleys are arranged in pairs on the upper and lower sides, and the pulling pulleys arranged in pairs on the upper and lower sides are provided with guide grooves corresponding to each other, and the guide grooves are along the lines. The pulling pulleys are radially arranged around the axis of the pulling pulleys, and the rotation directions between the two pulling pulleys arranged in pairs on the upper and lower sides are different from each other. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 13, further comprising a casting winding unit, the casting winding unit comprising a winding power source and a winding frame, the winding The power source controls and drives the reeling frame to rotate. The three-cavity multi-channel vacuum hot-mold continuous casting system according to claim 14, wherein the casting winding unit further comprises a winding timing controller, and the winding power source receives the winding timing controller The generated start winding control signal and stop winding control signal. A three-cavity multi-channel vacuum hot mold continuous casting method is that after the metal ingots to be melted are input into a feeding unit to a certain amount, the feeding unit is controlled to pour the metal ingots to be melted into a heating and melting unit. In the unit, a heat energy generating unit is used to melt the metal ingots to be melted in the heating and melting unit to form molten metal, and the molten metal is sent from the heating and melting unit into the continuous casting and forming unit, and The temperature inside the cavity of the continuous casting forming unit is controlled to be higher than the liquidus temperature of the metal ingots to be melted, and then the metal wires are continuously extruded through the forming mold of the continuous casting forming unit; During the process of inputting the molten metal ingot into the feeding unit to the process of sending the molten metal into the continuous casting unit for continuous extrusion molding of the metal wire, a vacuum state is maintained, and a protective atmosphere is input to avoid the metal ingot , The molten metal is oxidized; the cooling liquid is sprayed to the metal wire at the outlet end of the forming mold, and the cooling liquid spray direction is an oblique spray along the direction of the forward crystallization of the formed metal wire, so that the The heat of the metal wire is transferred from the outlet end of the forming mold to the cooling and solidification forming area along the drawing and casting direction of the metal wire, so that in the forming The molten metal at the outlet end of the die casting mold maintains its shape by surface tension and gradually solidifies into a metal wire during the continuous drawing process.

Images