Smelting furnace, die casting machine and die casting method

Abstract

The invention relates to a smelting furnace, a die-casting machine and a die-casting method, and relates to the technical field of die-casting. The smelting furnace comprises a first cylinder body and a second cylinder body, the first cylinder body is provided with a material smelting cavity, and the material smelting cavity is used for smelting materials; each second cylinder body is arranged in the melt cavity, each second cylinder body is provided with a liquid injection cavity, a feeding hole and a discharging hole, and the feeding hole and the discharging hole are respectively communicated with the liquid injection cavity; and material melt formed by smelting in the melt cavity flows into the liquid injection cavity through the feed port and can be discharged through the discharge port under the action of external force. The phenomenon that air holes exist in a die-casting product can be improved.

Description

Technical Field

[0001] The present application relates to the field of die-casting technology, and in particular to a furnace, a die-casting machine and a die-casting method. Background Art

[0002] Die casting is a metal casting process that uses the inner cavity of the mold to apply high pressure to the molten metal. In related technologies, after the raw material is melted in the heating cylinder, it needs to be transferred to the injection chamber through a carrier. During the transfer process, the molten liquid will cool down due to contact with air, and the molten liquid cannot be injected into the mold cavity at its highest temperature. It needs to be injected into the mold cavity at a high speed, resulting in pores in the product.

[0003] To this end, a melting furnace, a die-casting machine and a die-casting method are now provided. Summary of the invention

[0004] Based on this, it is necessary to provide a furnace, a die-casting machine and a die-casting method to address the problem of pores inside die-cast products in the related art.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a melting furnace, comprising:

[0007] A first cylinder body, wherein the first cylinder body is provided with a molten material cavity, and the molten material cavity is used for smelting materials;

[0008] At least one second cylinder, each of which is disposed in the melt chamber, and each of which is provided with a liquid injection chamber, a feed port and a discharge port, wherein the feed port and the discharge port are respectively connected to the liquid injection chamber;

[0009] The molten material formed by smelting in the melting chamber flows into the injection chamber through the feed port, and can also be discharged through the discharge port under the action of external force.

[0010] In one embodiment of the first aspect, each of the second cylinders is disposed in the melting chamber so as to keep the second cylinders warm by the molten material formed by melting in the melting chamber.

[0011] In one embodiment of the first aspect, the furnace further includes a heating element, which is disposed in the melt chamber and is used to melt the material in the first cylinder and keep the material melt in the second cylinder warm.

[0012] In one embodiment of the first aspect, the second cylinder body further includes an extrusion member, which is slidably disposed in the liquid injection cavity and is in contact with an inner wall surface of the liquid injection cavity, and the feed port and the discharge port are respectively disposed on different sides of the extrusion member.

[0013] In one embodiment of the first aspect, the extrusion member has a first preset position and a second preset position relative to the injection cavity;

[0014] When the extrusion member is located at the first preset position, the feed port is in an open state, and the feed port, the injection cavity and the discharge port are connected to each other;

[0015] When the extrusion member is located at the second preset position, the extrusion member seals the feed port, and the injection cavity is communicated with the discharge port.

[0016] In one of the embodiments of the first aspect, the extrusion member includes a push rod and a plunger, wherein the plunger is connected to one end of the push rod, and the plunger is slidably disposed in the injection chamber, and is used to extrude the material melt in the injection chamber and discharge it from the discharge port when the extrusion member moves from the first preset position to the second preset position.

[0017] In one of the embodiments of the first aspect, the injection chamber includes a first cavity and a second cavity that are independent of each other, the first cavity is connected to the second cavity, the feed port is located on one side of the first cavity and is connected to the first cavity, the discharge port is located on one side of the second cavity and is connected to the second cavity, and the extrusion member is slidably disposed in the first cavity.

[0018] In one embodiment of the first aspect, the second cylinder body further includes a liquid injection pipe, one end of which is sealedly connected to the discharge port.

[0019] In a second aspect, an embodiment of the present application further provides a die-casting machine, comprising the furnace described in any of the above embodiments.

[0020] In a third aspect, an embodiment of the present application further provides a die-casting method, using the furnace or die-casting machine described in any of the above embodiments, the die-casting method comprising:

[0021] Adding material into the melt chamber of the first cylinder;

[0022] Starting the heating element to make the melt chamber reach the preset melting temperature of the material to obtain a molten material;

[0023] The extruder is adjusted to a first preset position, so that the feed port of the second cylinder is opened, and the material melt is added into the injection cavity of the second cylinder;

[0024] The extruder presses the molten material in the injection cavity and blocks the feed port, so that the molten material is injected into the mold cavity through the discharge port;

[0025] The extrusion member is reset to the first preset position, the feed port is opened, and part of the material melt flows back to the injection cavity.

[0026] Compared with the related art, the beneficial effects of the present application are as follows: the present application provides a furnace, a die-casting machine and a die-casting method, which can be used for metal die-casting. The furnace includes a first cylinder body and a second cylinder body, wherein the first cylinder body is provided with a molten material cavity for material smelting. In this way, during the die-casting process, the molten liquid in the first cylinder body is added to the second cylinder body, and injected into the mold cavity from the discharge port of the second cylinder body, so that the molten liquid can be injected into the mold at its highest temperature without increasing the injection speed, thereby improving the phenomenon of pores inside the die-cast product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the initial state structure of the furnace in some embodiments of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of the second cylinder in some embodiments of the present application;

[0030] Figure 3 The structure diagram of the second cylinder in some embodiments of the present application is shown in FIG. Figure 1 ;

[0031] Figure 4 The structure diagram of the second cylinder in some embodiments of the present application is shown in FIG. Figure 2 ;

[0032] Figure 5 This is a schematic diagram of the die-casting structure of the second cylinder body in some embodiments of the present application;

[0033] Figure 6 Schematic diagram of the structure of the first cavity and the second cavity in some other embodiments of the present application;

[0034] Figure 7 Schematic diagram of the process of die-casting method in some embodiments of the present application.

[0035] Description of reference numerals:

[0036] 100, furnace; 110, first cylinder; 111, melt chamber; 120, second cylinder; 121, injection chamber; 1211, first chamber; 1212, second chamber; 122, feed port; 123, discharge port; 124, extrusion element; 1241, push rod; 1242, plunger; 125, partition; 130, heating element. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if the term "and / or" appears, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. If the terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] In the related technologies of die-casting process, the raw materials are made into blocks or other shapes, put into the heating cylinder for melting, and then transferred to the injection chamber. However, during the transfer of the molten liquid, the molten liquid will come into contact with the outside air, causing the temperature to cool down, and it is difficult for the molten liquid to maintain the highest temperature and be injected into the mold cavity. In order to prevent the temperature from cooling down, the molten liquid needs to be injected into the mold cavity at a high speed. The air in the mold cavity is difficult to be discharged quickly, and the gas remains in the molten liquid. There are pores inside the product, resulting in a low density of the product, generally only 90%-98%, and the mechanical properties are far less than the specifications of the raw materials. And after the product is formed, when it is polished, the internal pores will be exposed, resulting in poor product appearance and poor product surface, which is not conducive to surface treatment processes such as anodizing, oil spraying, spraying, powder spraying, electroplating, micro-arc oxidation, and electrophoretic paint treatment, which will affect the product yield and increase costs.

[0044] To this end, an embodiment of the present application provides a furnace 100 that can improve the phenomenon of pores inside die-cast products.

[0045] See also Figure 1 As shown, the furnace 100 includes a first cylinder 110 and at least one second cylinder 120 .

[0046] Continue to refer Figure 2 As shown, the first cylinder 110 is provided with a melt cavity 111, which is used for melting materials; each second cylinder 120 is provided with a liquid injection cavity 121, a feed port 122 and a discharge port 123, and the feed port 122 and the discharge port 123 are respectively connected to the liquid injection cavity 121. The molten material formed by melting in the melt cavity 111 flows into the liquid injection cavity 121 through the feed port 122, and can also be discharged through the discharge port 123 under the action of external force.

[0047] Furthermore, the second cylinder body 120 also includes a liquid injection pipe, one end of which is sealedly connected to the discharge port 123 .

[0048] Exemplarily, one end of the injection tube is connected to the discharge port 123, and the other end is connected to the injection port of the mold, so that during the injection process, the molten metal is in a fully sealed state, reducing air contact, maintaining the molten metal temperature, and reducing the generation of pores in the die-cast product.

[0049] In summary, the furnace 100 provided in the embodiment of the present application is fully sealed during the die-casting process, uses full pipeline feeding, fills the cavity at a low speed, and adopts a pressing method to maintain balanced pressure and stress on the surface of the product during molding.

[0050] In some embodiments, each second cylinder 120 is disposed in the melting chamber 111 so as to keep the second cylinder 120 warm by the molten material formed by melting in the melting chamber 111 .

[0051] Exemplarily, the first cylinder 110 may be a high temperature resistant metal container. A melt chamber 111 is provided inside the first cylinder 110, and an opening is provided on one side of the first cylinder 110, so that the second cylinder 120 can be installed in the melt chamber 111 from the opening side, and raw materials to be smelted can be added from the opening side. It is understandable that an openable and closable cover structure can be provided at the opening to control the feeding state of the melt chamber 111.

[0052] The second cylinder 120 can be made of the same high temperature resistant material as the first cylinder 110. A liquid injection cavity 121 is provided in the second cylinder 120. By arranging the second cylinder 120 in the melt cavity 111 of the first cylinder 110, a structure similar to a mother-and-child cylinder is formed, and the temperature of the melt cavity 111 of the first cylinder 110 plays a certain role in heat preservation for the second cylinder 120. After the internal melt of the first cylinder 110 is added to the second cylinder 120, the melt is injected into the mold cavity through the injection device to ensure that the melt is injected into the mold cavity at its highest temperature, so there is no need to avoid heat loss during the transfer process, and there is no need to deliberately increase the injection speed, thereby improving the die-casting quality of the product and improving the problem of pores inside the product.

[0053] It should be noted that the at least one index in the present application is a natural number greater than 0. The number of the second cylinders 120 in the present application can be one, two, three, four, etc., which can be selected according to actual needs and can meet the simultaneous die-casting operations of multiple molds.

[0054] It should be noted that, in this embodiment, the second cylinder body 120 and the first cylinder body 110 can be an integrally formed structure. In other embodiments, the second cylinder body 120 and the first cylinder body 110 can also be separately provided, and the second cylinder body 120 is only installed in the first cylinder body 110 by installing the workpiece, which can meet the die-casting effect of this application.

[0055] In other embodiments, the second cylinder body 120 is not limited to being installed only inside the first cylinder body 110, but can also be set on the side of the first cylinder body 110 or separately set on the outside of the first cylinder body 110, both of which can achieve the function of the present application of injecting the molten metal into the mold at its highest temperature.

[0056] In some embodiments, the furnace 100 further includes a heating element 130 , which is disposed in the melt chamber 111 and is used to melt the material in the first cylinder 110 and to keep the material melt in the second cylinder 120 warm.

[0057] Exemplarily, the heating element 130 can heat the inside of the melt chamber 111, so that the inside of the melt chamber 111 reaches a preset temperature value for melting the material. Specifically, the preset temperature value can be set accordingly according to different raw materials, such as the melting point of metal iron is 1538°C, the melting point of metal cobalt is 1495°C, and the melting point of metal nickel is 1455°C. The material can be heated and melted by setting the heating element 130, and the first cylinder body 110 and the second cylinder body 120 are further heated and insulated during the die-casting process, so that the molten liquid is always kept at a high temperature, ensuring the die-casting quality of the molten liquid and the workpiece.

[0058] In some embodiments, a temperature sensor may be provided in the melt chamber 111, and a corresponding temperature threshold may be set according to the material. When the temperature inside the melt chamber 111 is lower than the preset temperature threshold, the heating element 130 automatically performs heating operation, which can reduce the energy consumption of the heating element 130 to a certain extent, while ensuring that the high temperature of the melt is maintained.

[0059] In some embodiments, the heating element 130 is an electromagnetic heater, which includes an electromagnetic coil wound around the circumference of the second cylinder 120 .

[0060] For example, electromagnetic heaters can convert electrical energy into thermal energy through the principle of electromagnetic induction. Electrical energy can be converted into thermal energy without the need for heat transfer through an intermediate medium, thus avoiding energy loss. At the same time, it has a fast and accurate temperature adjustment function, which can achieve precise control of the heated material. It does not produce waste gas and waste water, and has no flame or odor, which is safer than traditional heating methods such as gas.

[0061] However, the electromagnetic heater requires that the heated material must have metallic conductivity, so the embodiments of the present application are not limited to electromagnetic heating. For non-magnetic metals such as aluminum and titanium, resistance heating, electron beam heating, laser heating, etc. can still be used.

[0062] In some embodiments, the second cylinder body 120 further includes an extrusion piece 124 , which is slidably disposed in the injection cavity 121 , and the extrusion piece 124 is in contact with the inner wall surface of the injection cavity 121 , and the feed port 122 and the discharge port 123 are respectively disposed on different sides of the extrusion piece 124 .

[0063] Exemplarily, the extrusion member 124 can perform a reciprocating pushing operation under the action of an external force, and the extrusion member 124 is arranged in close contact with the inner wall of the injection cavity 121, so that during the extrusion process, the molten liquid in the injection cavity 121 is pushed out from the discharge port 123, preventing the molten liquid from leaking out from the side of the extrusion member 124 during the pushing process. At the same time, during the pushing process, the extrusion member 124 blocks the feed port 122 to prevent the molten liquid from flowing back.

[0064] Continue reading Figure 3 and Figure 4 As shown, in some embodiments, the extrusion member 124 has a first preset position and a second preset position relative to the liquid injection cavity 121. When the extrusion member 124 is located at the first preset position, the feed port 122 is open, and the feed port 122, the liquid injection cavity 121, and the discharge port 123 are interconnected; when the extrusion member 124 is located at the second preset position, the extrusion member 124 seals the feed port 122, and the liquid injection cavity 121 is connected to the discharge port 123.

[0065] Exemplarily, the first preset position is the initial position of the extrusion member 124. At this time, the plunger 1242 is located above the first cavity 1211, and the feed port 122 is located in the middle of the first cavity 1211 and is open, so that the molten material can be added into the first cavity 1211 through the feed port 122. The second preset position is the position where the extrusion member 124 reaches the maximum displacement downward. At this time, the plunger 1242 is located at the bottom of the first cavity 1211, so that the molten material is pressed into the second cavity 1212 and injected into the mold cavity through the discharge port 123. At the same time, the outer wall of the push rod 1241 fits the wall of the first cavity 1211, thereby blocking the feed port 122 located on one side of the wall of the first cavity 1211 to prevent the molten material from backflowing during the extrusion process.

[0066] In some embodiments, the extrusion member 124 includes a push rod 1241 and a plunger 1242. The plunger 1242 is connected to one end of the push rod 1241. The plunger 1242 is slidably disposed in the injection chamber 121 and is used to extrude the material melt in the injection chamber 121 and discharge it from the discharge port 123 when the extrusion member 124 moves from the first preset position to the second preset position.

[0067] Exemplarily, the plunger 1242 may be similar to a piston structure. Driven by the push rod 1241 , the plunger 1242 may reciprocate in the first cavity 1211 , thereby hydraulically injecting the molten metal in the first cavity 1211 into the mold cavity.

[0068] In some embodiments, the injection chamber 121 includes a first cavity 1211 and a second cavity 1212 that are independent of each other, the first cavity 1211 is connected to the second cavity 1212, the feed port 122 is arranged on one side of the first cavity 1211 and is connected to the first cavity 1211, the discharge port 123 is arranged on one side of the second cavity 1212 and is connected to the second cavity 1212, and the extrusion piece 124 is slidably penetrated in the first cavity 1211.

[0069] Exemplarily, the first cavity 1211 is a feed cavity and is connected to the feed port 122, and the second cavity 1212 is a discharge cavity and is connected to the discharge port 123, so that the molten metal is added into the first cavity 1211 through the feed port 122, and then discharged from the second cavity 1212 and the discharge port 123 under the extrusion of the extruder 124.

[0070] A feed hopper is provided at one end of the feed port 122 away from the first cavity 1211 . The feed hopper has a conical structure, so that when adding materials, the molten metal is added into the feed hopper and flows into the feed port 122 and the first cavity 1211 along the wall of the feed hopper.

[0071] In the present application, the flow direction of the first cavity 1211 and the second cavity 1212 can be set according to actual needs and is not specifically limited here. For example, the injection direction of the first cavity 1211 can be from top to bottom or from bottom to top.

[0072] See also Figure 6 As shown, the first cavity 1211 and the second cavity 1212 can be connected at a certain angle, so as to adjust the direction of the discharge port 123, and the molten liquid can be injected in different directions. At the same time, the flow length of the molten liquid in the cavity is extended, the feeding speed of the molten liquid is reduced, and the residual air and the molten liquid have enough time to be discharged, thereby improving the die-casting performance of the product.

[0073] In some embodiments, the second cylinder 120 further includes a partition 125 , and the partition 125 separates the injection cavity 121 into a first cavity 1211 and a second cavity 1212 .

[0074] Exemplarily, the first cavity 1211 and the second cavity 1212 are both arranged vertically, the partition 125 separates the first cavity 1211 and the second cavity 1212, and the bottom end of the first cavity 1211 is connected to the bottom end of the second cavity 1212 to form a U-shaped structure. When the surface pressure of the melt in the two cavities is the same, the melt height in the two cavities is the same.

[0075] An embodiment of the present application further provides a die-casting machine, comprising the furnace 100 in any of the above embodiments.

[0076] Exemplarily, the die-casting machine may further include a thrust device, and one end of the extrusion member 124 away from the first cavity 1211 is connected to an output end of the thrust device, so that under the drive of the thrust device, the push rod 1241 drives the plunger 1242 to perform a reciprocating pressing operation.

[0077] In addition, the thrust device may be a device with telescopic function such as a pneumatic cylinder, a hydraulic cylinder, a linear motor, etc., which can be selected according to actual needs and is not specifically limited here.

[0078] This embodiment has the furnace 100 in any of the above embodiments, and therefore has all the beneficial effects of the furnace 100 in any of the above embodiments, which will not be described in detail here.

[0079] See also Figure 7 As shown, an embodiment of the present application further provides a die-casting method, which uses the furnace 100 or the die-casting machine in any of the above embodiments.

[0080] Die casting methods include:

[0081] S10 , adding materials into the melt chamber 111 of the first cylinder 110 .

[0082] See also Figure 1 As shown, for example, the cover of the first cylinder 110 can be opened to expose the melt chamber 111, and materials can be added to the melt chamber 111. Specifically, materials can be added manually by shoveling or by adding solid raw materials into the melt chamber 111 of the first cylinder 110 through a conveying device, so as to realize automatic material addition.

[0083] S20, starting the heating element 130, so that the melting chamber 111 reaches the preset melting temperature of the material, and obtaining a molten material.

[0084] Exemplarily, after the material is added, the heating element 130 is started to heat the melt chamber 111 so that the temperature inside the melt chamber 111 reaches a preset melting temperature of the material, so that the material is completely melted to obtain a molten material.

[0085] S30 , adjusting the extrusion member 124 to the first preset position, opening the feed port 122 of the second cylinder body 120 , and adding the material melt into the injection cavity 121 of the second cylinder body 120 .

[0086] See also Figure 3 As shown, for example, when adding material melt to the second cylinder 120, the extruder 124 is located at the top of the first cavity 1211, and the feed port 122 is open. The feeding operation can be performed by a transfer device, such as a spoon. Specifically, an industrial camera and a manipulator can be used for coordinated operation. The spoon is installed at the working end of the manipulator. The manipulator obtains the corresponding feeding position according to the industrial camera, thereby controlling the spoon to feed the material to the feed port 122.

[0087] Since the first cavity 1211 and the second cavity 1212 form a U-shaped connection structure, when adding molten material to the first cavity 1211, the second cavity 1212 can also maintain the molten material at the same liquid level as the first cavity 1211, which is convenient for subsequent pressing injection.

[0088] S40 , the extrusion member 124 presses the molten material in the injection cavity 121 and blocks the feed port 122 , so that the molten material is injected into the mold cavity through the discharge port 123 .

[0089] See also Figure 4 As shown, for example, after the feeding is completed, the extruder 124 is driven by the thrust device to press the material melt in the first cavity 1211 downward, and the plunger 1242 is pressed downward to the second preset position at the bottom, and the material melt in the second cylinder 120 is discharged from the discharge port 123 and injected into the mold cavity. At the same time, the push rod 1241 fits against the wall of the first cavity 1211, blocking the feed port 122 to prevent the melt from flowing back during the extrusion process.

[0090] S50 , the extrusion member 124 returns to the first preset position, the feed port 122 opens, and part of the molten material flows back to the injection cavity 121 .

[0091] See also Figure 5 As shown, for example, when the extrusion member 124 reaches the second preset position with the maximum descending height, the thrust device drives the extrusion member 124 to reset to the first preset position, and the feed port 122 is in an open state, and the next feeding and pressing operation can be performed. The operation is cyclically performed to complete the production of the die-casting workpiece.

[0092] The die-casting method provided in the embodiment of the present application is such that during the pressing process, the solution is in a state between semi-liquid and semi-solid, the finished die-cast workpiece has high density and low stress, and can also be formed into products with perfect appearance at precise and fine positions, and has the appearance of the plate after CNC (Computerized Numerical Control) processing. The density of the product can exceed 98%, reducing defective products with pores or high-speed injection.

[0093] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A furnace, characterized in that: include: A first cylinder body, wherein the first cylinder body is provided with a molten material cavity, and the molten material cavity is used for smelting materials; At least one second cylinder, each of which is provided with a liquid injection cavity, a feed port and a discharge port, wherein the feed port and the discharge port are respectively connected to the liquid injection cavity; The molten material formed by smelting in the melting chamber flows into the injection chamber through the feed port, and can also be discharged through the discharge port under the action of external force.

2. The furnace according to claim 1, characterized in that Each of the second cylinder bodies is arranged in the melting chamber so as to keep the second cylinder body warm through the material melt formed by melting in the melting chamber.

3. The furnace according to claim 2, characterized in that The furnace further comprises a heating element, which is arranged in the molten material chamber and is used for melting the material in the first cylinder and keeping the material melt in the second cylinder warm.

4. The furnace according to claim 1, characterized in that The second cylinder body further comprises an extrusion piece, which is slidably disposed in the liquid injection cavity and is in contact with an inner wall surface of the liquid injection cavity. The feed port and the discharge port are respectively disposed on different sides of the extrusion piece.

5. The furnace according to claim 4, characterized in that The extrusion member has a first preset position and a second preset position relative to the liquid injection cavity; When the extrusion member is located at the first preset position, the feed port is in an open state, and the feed port, the injection cavity and the discharge port are connected to each other; When the extrusion member is located at the second preset position, the extrusion member seals the feed port, and the injection cavity is communicated with the discharge port.

6. The furnace according to claim 5, characterized in that The extrusion member includes a push rod and a plunger, wherein the plunger is connected to one end of the push rod and is slidably disposed in the liquid injection cavity, and is used to squeeze the material melt in the liquid injection cavity and discharge it from the discharge port when the extrusion member moves from the first preset position to the second preset position.

7. The furnace according to claim 4, characterized in that The injection cavity includes a first cavity and a second cavity which are independent of each other. The first cavity is connected to the second cavity. The feed port is located at one side of the first cavity and is connected to the first cavity. The discharge port is located at one side of the second cavity and is connected to the second cavity. The extrusion piece is slidably disposed in the first cavity.

8. The furnace according to any one of claims 1 to 7, characterized in that The second cylinder body further comprises a liquid injection pipe, one end of which is sealedly connected to the discharge port.

9. A die casting machine, characterized in that: A furnace comprising the furnace according to any one of claims 1 to 8.

10. A die casting method, characterized in that: Using the furnace according to any one of claims 1 to 8 or the die-casting machine according to claim 9, the die-casting method comprises: Adding material into the melt chamber of the first cylinder; Starting the heating element to make the melt chamber reach the preset melting temperature of the material to obtain a molten material; The extruder is adjusted to a first preset position, so that the feed port of the second cylinder is opened, and the material melt is added into the injection cavity of the second cylinder; The extruder presses the molten material in the injection cavity and blocks the feed port, so that the molten material is injected into the mold cavity through the discharge port; The extrusion member is reset to the first preset position, the feed port is opened, and part of the material melt flows back to the injection cavity.

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