Electromagnetic force driving type molten metal die casting system and method

Abstract

The invention relates to the field of metal die casting, and discloses an electromagnetic force driving type molten metal die casting system and method.The electromagnetic force driving type molten metal die casting system comprises a casting chamber, a first butt flange, a first split flange assembly, an electromagnetic pump assembly, a second split flange assembly, a second butt flange and a smelting chamber; the casting chamber is connected with the first splitting flange assembly through the first butt flange, the electromagnetic pump assembly is connected with the first splitting flange assembly and the second splitting flange assembly, and the smelting chamber is connected with the second splitting flange assembly through the second butt flange. The device has the following advantages and effects that electromagnetic force is adopted for driving molten metal, the molten metal is injected into the cavity, electromagnetic force driving is adopted, the device does not make contact with the molten metal, no pollution is caused to molten metal, the driving force is large, controllability is high, production efficiency is improved, the structure is simple, the size is small, space is saved, field operability is high, the mechanical structure is simple, later maintenance is convenient, and cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of metal die casting, and particularly to an electromagnetic force-driven molten metal die casting system and method. Background Art

[0002] The die casting system mainly injects molten metal into the mold cavity under high pressure and forms precision parts after rapid cooling. The pressure of the existing die casting system mainly comes from the injection system of the die casting machine, that is, the injection mechanism is driven by high-pressure oil to generate the required pressure, including mechanisms such as a hydraulic pump, an injection cylinder, and an injection punch. There are many components and the structure is complex, and the later maintenance cost is high.

[0003] Low-pressure casting is to smoothly inject molten metal from a sealed heat preservation furnace into the mold cavity under a lower pressure. Generally, compressed air (or other inert gases) is applied to the surface of the sealed melting furnace to inject the molten metal liquid into the mold cavity. The melting furnace must be sealed, the operation difficulty is large, and the applied pressure is limited, making it difficult to produce extra-large or thick-walled parts, and it is only suitable for small and medium batch production.

[0004] The supply method of the molten metal in the die casting system directly affects the production efficiency, the quality of the castings, and the process stability; common supply methods of molten metal include: manual feeding, with simple equipment and low cost, but due to low efficiency and low automation, it is only suitable for small batch or experimental production, and the molten metal temperature fluctuates greatly, and there are high risks of oxidation and impurity introduction, and manual operation has poor safety; robotic arm feeding, with high efficiency, high automation, high safety, stable temperature control, suitable for continuous production, but with large investment and cumbersome and costly later maintenance; quantitative furnace feeding, which requires multiple sets of equipment to work together, with high equipment cost, requires regular cleaning, and has high later maintenance cost. Therefore, it is necessary to design an electromagnetic force-driven molten metal die casting system and method to solve the above problems.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide an electromagnetic force-driven molten metal die casting system and method to solve the above problems.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: The electromagnetic force-driven molten metal die casting system includes: A casting chamber, a docking flange one, a split flange assembly one, an electromagnetic pump assembly, a split flange assembly two, a docking flange two, and a melting chamber; The casting chamber is connected to the split flange assembly I through the docking flange I. The electromagnetic pump assembly is connected to the split flange assembly I and the split flange assembly II. The melting chamber is connected to the split flange assembly II through the docking flange II.

[0008] A further setting of the present invention is that graphite gaskets are assembled between the docking flange I and the split flange assembly I, and between the split flange assembly II and the docking flange II.

[0009] A further setting of the present invention is that the split flange assembly I includes a lower split flange, an intermediate liquid passing pipe, and an upper split flange. The lower split flange and the upper split flange are both abutted against the intermediate liquid passing pipe.

[0010] By adopting the above technical solution, disassembly and assembly are convenient.

[0011] A further setting of the present invention is that the electromagnetic pump assembly includes an electromagnetic pump docking flange, an electromagnetic pump coil, and a silicon nitride tube. The electromagnetic pump docking flange and the electromagnetic pump coil are both fixedly installed on the outer side of the silicon nitride tube.

[0012] A further setting of the present invention is that the split flange assembly I and the split flange assembly II have the same specifications, and thermocouple sensors are provided on both the split flange assembly I and the split flange assembly II.

[0013] By adopting the above technical solution, docking is convenient.

[0014] A further setting of the present invention is that the docking flange I and the docking flange II have the same specifications.

[0015] By adopting the above technical solution, docking is convenient.

[0016] The electromagnetic force-driven molten metal die-casting method is applied to the electromagnetic force-driven molten metal die-casting system as described in any one of the above, and includes the following steps: S1: During operation, the driving force generated by the electromagnetic pump assembly pushes the molten metal into the casting chamber, and the pressure in the casting chamber is increased by continuous transportation to achieve the effect of pressure increase; S2: After the casting is cooled and formed, the electromagnetic pump assembly stops working and the molten metal pressure decreases. The electromagnetic pump assembly can also reverse the transportation of the molten metal, that is, transport the molten metal in the casting chamber back to the melting chamber.

[0017] The beneficial effects of the present invention are: The present invention uses electromagnetic force to drive molten metal, injecting the molten metal into the cavity. Driven by electromagnetic force, it does not contact the molten metal, causing no pollution to the metal melt. It has a large driving force, strong controllability, and is a fully automated device that can work continuously throughout the year, improving production efficiency. It has a simple structure, small size, saves space, has strong on-site operability, a simple mechanical structure, and is convenient for later maintenance with low costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of an electromagnetic force-driven molten metal die-casting system proposed by the present invention.

[0020] Figure 2 is a schematic structural diagram of split flange assembly one in the electromagnetic force-driven molten metal die-casting system proposed by the present invention.

[0021] Figure 3 is a schematic structural diagram of the electromagnetic pump assembly in the electromagnetic force-driven molten metal die-casting system proposed by the present invention.

[0022] In the figure, 1, casting chamber; 2, docking flange one; 3, graphite gasket; 4, split flange assembly one; 4-1, lower split flange; 4-2, intermediate liquid passing pipe; 4-3, upper split flange; 5, electromagnetic pump assembly; 5-1, electromagnetic pump docking flange; 5-2, electromagnetic pump coil; 5-3, silicon nitride tube; 6, split flange assembly two; 7, docking flange two; 8, melting chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0025] See Figure 1 、 Figure 2 and Figure 3 , the present invention provides an electromagnetic force-driven molten metal die-casting system, including: A casting chamber 1, a docking flange one 2, a split flange assembly one 4, an electromagnetic pump assembly 5, a split flange assembly two 6, a docking flange two 7, and a melting chamber 8; The casting chamber 1 is connected to the split flange assembly one 4 through the docking flange one 2, the electromagnetic pump assembly 5 is connected to the split flange assembly one 4 and the split flange assembly two 6, and the melting chamber 8 is connected to the split flange assembly two 6 through the docking flange two 7.

[0026] Specifically, graphite gaskets 3 are assembled between the docking flange one 2 and the split flange assembly one 4, and between the split flange assembly two 6 and the docking flange two 7. The split flange assembly one 4 includes a lower split flange 4-1, an intermediate liquid passing pipe 4-2, and an upper split flange 4-3. Both the lower split flange 4-1 and the upper split flange 4-3 are abutted against the intermediate liquid passing pipe 4-2. It should be noted that the split flange assembly one 4 is connected and pressed to the electromagnetic pump assembly 5 by bolts, and the connection method at the other end of the electromagnetic pump assembly 5 is the same as that at the left end.

[0027] Specifically, the electromagnetic pump assembly 5 includes an electromagnetic pump docking flange 5-1, an electromagnetic pump coil 5-2, and a silicon nitride tube 5-3. The electromagnetic pump docking flange 5-1 and the electromagnetic pump coil 5-2 are both fixedly installed on the outside of the silicon nitride tube 5-3. It should be noted that electromagnetic force is used to drive the molten metal, and the molten metal is injected into the cavity. Driven by electromagnetic force, it does not contact the molten metal, is pollution-free to the molten metal, and has a large driving force.

[0028] Specifically, the split flange assembly one 4 and the split flange assembly two 6 have the same specifications, the docking flange one 2 and the docking flange two 7 have the same specifications, and thermocouple sensors are provided on both the split flange assembly one 4 and the split flange assembly two 6. It should be noted that it is convenient for docking processing. The thermocouple sensor is used to detect the temperature of the molten liquid in the pipeline. When the temperature drops, it can transmit a signal to the electronic control system. At this time, the heating system inside the melting chamber 8 is started to maintain the temperature of the molten liquid in the pipeline, making the operation of the entire system more stable.

[0029] The electromagnetic force-driven molten metal die-casting method is applied to the electromagnetic force-driven molten metal die-casting system as described in any one of the above, and includes the following steps: S1: During operation, the driving force generated by the electromagnetic pump assembly 5 pushes the molten metal into the casting chamber 1. By continuously conveying, the pressure in the casting chamber 1 is increased to achieve the effect of pressure boosting. S2: After the casting is cooled and formed, the electromagnetic pump assembly 5 stops working and the molten metal pressure decreases. The electromagnetic pump assembly 5 can also achieve reverse conveyance of the molten metal, that is, convey the molten metal in the casting chamber 1 back to the melting chamber 8.

[0030] The electromagnetic force is used to drive the molten metal and inject the molten metal into the cavity. Driven by electromagnetic force, it does not contact the molten metal, is pollution-free to the molten metal, has a large driving force, strong controllability, is a fully automated device, can work continuously throughout the year, improves production efficiency, has a simple structure, small size, saves space, can be reconstructed using an old furnace, and is also suitable for a new foundation. An electromagnetic pump system is added between the melting chamber 8 and the casting chamber 1, with strong on-site operability, simple mechanical structure, and convenient and low-cost later maintenance.

[0031] The electromagnetic force-driven molten metal die-casting system and method provided by the present invention have been introduced in detail above. Specific embodiments are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An electromagnetic force driven molten metal die casting system and method, characterized in that: include: A casting chamber (1), a docking flange 1 (2), a split flange assembly 1 (4), an electromagnetic pump assembly (5), a split flange assembly 2 (6), a docking flange 2 (7) and a smelting chamber (8); The casting chamber (1) is connected to the split flange assembly (4) via a docking flange (2), the electromagnetic pump assembly (5) is connected to the split flange assembly (4) and the split flange assembly (6), and the smelting chamber (8) is connected to the split flange assembly (6) via a docking flange (7).

2. The electromagnetic force driven molten metal die casting system according to claim 1, characterized in that: Graphite gaskets (3) are installed between the butt joint flange 1 (2) and the split flange assembly 1 (4), and between the split flange assembly 2 (6) and the butt joint flange 2 (7).

3. The electromagnetic force driven molten metal die casting system according to claim 1, characterized in that: The split flange assembly 1 (4) comprises a lower split flange (4-1), an intermediate liquid passing pipe (4-2) and an upper split flange (4-3), wherein the lower split flange (4-1) and the upper split flange (4-3) are both in contact with the intermediate liquid passing pipe (4-2).

4. The electromagnetic force driven molten metal die casting system according to claim 1, characterized in that: The electromagnetic pump assembly (5) comprises an electromagnetic pump docking flange (5-1), an electromagnetic pump coil (5-2) and a silicon nitride tube (5-3); the electromagnetic pump docking flange (5-1) and the electromagnetic pump coil (5-2) are both fixedly mounted on the outside of the silicon nitride tube (5-3).

5. The electromagnetic force driven molten metal die casting system according to claim 1, characterized in that: The split flange component one (4) and the split flange component two (6) have the same specifications, and both the split flange component one (4) and the split flange component two (6) are provided with thermocouple sensors.

6. The electromagnetic force driven molten metal die casting system according to claim 1, characterized in that: The specifications of the docking flange 1 (2) and the docking flange 2 (7) are the same.

7. An electromagnetic force driven molten metal die casting method, applied to an electromagnetic force driven molten metal die casting system as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1: When working, the driving force generated by the electromagnetic pump assembly (5) pushes the molten metal into the casting chamber (1), and the pressure in the casting chamber (1) is increased by continuous delivery, thereby achieving a pressurization effect; S2: After the casting is cooled and formed, the electromagnetic pump assembly (5) stops working and the molten liquid pressure decreases. The electromagnetic pump assembly (5) can also realize reverse transport of the molten liquid, that is, transport the molten liquid in the casting chamber (1) back to the smelting chamber (8).

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