Die casting device and die casting method
Through the full-process pipe conveying and slow injection die-casting device, the temperature cooling and pore problems of melt during the transfer process are solved, and the product density and mechanical properties are improved.
Patent Information
- Application Number
- CN202411182028.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2024-12-13
AI Technical Summary
During die casting, the melt contacts with external air during transfer lead to temperature cooling, resulting in the product containing pores, affecting density and mechanical properties.
A die-casting device is designed, including a conveying cylinder, a pressing chamber and a conveying pipeline. The melt is transported through the entire pipeline to avoid contact with external air, and the melt is slowly injected into the mold through the advancement of the extruder and pressing parts. The cavity ensures that the air in the mold has sufficient time to discharge.
It effectively reduces melt temperature loss, improves product density, reduces pore problems, and improves the mechanical properties and appearance quality of the workpiece.
Smart Images
Figure CN119114894A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of die casting technology, and in particular to a die casting device 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 needs to be injected into the mold cavity at high speed, resulting in pores in the product.
[0003] To this end, a die-casting device and a die-casting method are now provided. Summary of the invention
[0004] Based on this, it is necessary to provide a die-casting device 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 die-casting device, comprising:
[0007] A conveying cylinder, the conveying cylinder comprises a cylinder body and an extrusion piece, the cylinder body is provided with a feeding port, a containing cavity and a discharging port, the feeding port and the discharging port are respectively communicated with the containing cavity, the containing cavity is used to contain the material melt added from the feeding port, and the extrusion piece is slidably arranged in the containing cavity;
[0008] An injection chamber, the injection chamber comprises a chamber body and an injection piece, the chamber body is provided with a feed port, an injection cavity and an injection port, the feed port and the injection port are respectively communicated with the injection cavity, the injection port is used to connect with the mold cavity, and the injection piece is slidably arranged in the injection cavity;
[0009] A conveying pipeline, one end of which is sealedly connected to the discharge port, and one end of which is away from the discharge port is sealedly connected to the feed port;
[0010] The molten material in the accommodating cavity can be transported to the injection cavity through the conveying pipe under the push of the extrusion part; the molten material in the injection cavity can be transported to the mold cavity through the injection port under the push of the injection part.
[0011] In one embodiment of the first aspect, the delivery pipe is arranged at an angle, and the height of one end of the delivery pipe connected to the injection chamber in the direction of gravity is higher than that of one end of the delivery pipe connected to the delivery cylinder.
[0012] In one embodiment of the first aspect, the extrusion member has a first preset position and a second preset position relative to the accommodating cavity;
[0013] When the extrusion member is located at the first preset position, the feeding port is in an open state, and the feeding port, the accommodating cavity and the discharge port are connected to each other;
[0014] When the extrusion member is located at the second preset position, the extrusion member seals the feeding port, and the accommodating cavity is communicated with the discharge port.
[0015] In one of the embodiments of the first aspect, the extrusion member includes a first push rod and a first plunger, the first plunger is connected to one end of the first push rod, and the first plunger is used to squeeze the material melt in the accommodating cavity to discharge it from the discharge port.
[0016] In one embodiment of the first aspect, the injection member has a third preset position and a fourth preset position relative to the injection cavity;
[0017] When the injection member is located at the third preset position, the feed port is in an open state, and the feed port, the injection cavity, the injection port, the discharge port and the accommodating cavity are interconnected;
[0018] When the extrusion member is located at the second preset position, the injection member squeezes the material melt in the injection cavity and seals the feed port, and the injection cavity is connected to the injection port;
[0019] When the injection component is located at the fourth preset position, the injection component pushes the molten material in the injection cavity into the mold cavity, and the extrusion component is reset to the first preset position.
[0020] In one embodiment of the first aspect, the injection part includes a second push rod and a second plunger, the second plunger is connected to one end of the second push rod, and the second plunger is used to push the molten material in the injection cavity into the mold cavity.
[0021] In one of the embodiments of the first aspect, the accommodating 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 feeding port is located on one side of the first cavity and is connected to the first cavity, the discharging 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.
[0022] In one embodiment of the first aspect, the delivery cylinder further includes a partition plate, and the partition plate separates the accommodating cavity into the first cavity and the second cavity.
[0023] In one of the embodiments of the first aspect, the die-casting device further includes a heating element, and the heating element is disposed on a peripheral side of the conveying cylinder.
[0024] In a second aspect, an embodiment of the present application further provides a die-casting method, using the die-casting device described in any of the above embodiments, the die-casting method comprising:
[0025] The extruder is adjusted to a first preset position, so that the feeding port of the conveying cylinder is opened, and the material melt is added into the containing cavity of the conveying cylinder;
[0026] Adjust the injection piece to the third preset position so that the feed port of the injection chamber is opened;
[0027] The extrusion member is pushed toward the second preset position and blocks the feeding port, and the molten material enters the injection cavity;
[0028] The injection component is pushed toward the fourth preset position and blocks the feed port, and the extrusion component is reset to the first preset position;
[0029] The injection piece reaches the fourth preset position, and the molten material is injected into the mold cavity.
[0030] Compared with the related art, the beneficial effects of the present application are as follows: the present application provides a die-casting device and a die-casting method, which can be used for metal die-casting. The die-casting device includes a conveying cylinder, an injection chamber and a conveying pipeline, wherein the conveying pipeline is sealed and connected to the conveying cylinder and the injection chamber respectively, an extrusion piece for molten metal extrusion and conveying is provided in the conveying cylinder, and an injection piece for injecting the molten metal into the mold cavity is provided in the injection chamber. In this way, during the die-casting process, the molten metal is fed in a full-process pipeline manner to avoid cooling caused by contact with external air during the conveying process. At the same time, there is no need to inject the molten metal into the mold cavity during the pressing process, the injection rate of the molten metal is slow, and the residual air in the mold cavity has enough time to be discharged, thereby improving the problem of air holes in the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] 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.
[0032] Figure 1 This is a schematic diagram of the initial state structure of the die-casting device in some embodiments of the present application;
[0033] Figure 2 This is a schematic diagram of the structure of the delivery cylinder in some embodiments of the present application;
[0034] Figure 3 This is a schematic diagram of the structure of the injection chamber in some embodiments of the present application;
[0035] Figure 4 Schematic diagram of the die-casting state structure of the die-casting device in some embodiments of the present application Figure 1 ;
[0036] Figure 5 Schematic diagram of the die-casting state structure of the die-casting device in some embodiments of the present application Figure 2 ;
[0037] Figure 6 This is a schematic diagram of the structure of the die-casting device in the reset state in some embodiments of the present application;
[0038] Figure 7 Schematic diagram of the process of die-casting method in some embodiments of the present application.
[0039] Description of reference numerals:
[0040] 100, die-casting device; 110, conveying cylinder; 111, cylinder body; 1111, feeding port; 1112, discharging port; 1113, accommodating chamber; 11131, first cavity; 11132, second cavity; 112, extrusion member; 1121, first push rod; 1122, first plunger; 113, partition; 120, injection chamber; 121, chamber body; 1211, injection chamber; 1212, feeding port; 1213, injection port; 122, injection member; 1221, second push rod; 1222, second plunger; 130, conveying pipeline; 140, heating member;
[0041] 200. Mould. DETAILED DESCRIPTION
[0042] 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.
[0043] 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.
[0044] 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.
[0045] 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.
[0046] 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.
[0047] 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.
[0048] 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.
[0049] To this end, an embodiment of the present application provides a die-casting device 100 that can be used in a metal die-casting process. The die-casting device 100 provided in the present application can improve the problem of pores in a product.
[0050] refer to Figure 1 As shown, the die casting device 100 includes a conveying cylinder 110 , an injection chamber 120 and a conveying pipeline 130 .
[0051] Continue to refer Figure 2 As shown, the conveying cylinder 110 includes a cylinder body 111 and an extrusion piece 112. The cylinder body 111 is provided with a feeding port 1111, a receiving chamber 1113 and a discharging port 1112. The feeding port 1111 and the discharging port 1112 are respectively connected to the receiving chamber 1113. The receiving chamber 1113 is used to hold the material melt. The extrusion piece 112 is slidably arranged in the receiving chamber 1113.
[0052] For reference Figure 3As shown, the injection chamber 120 includes a chamber body 121 and an injection piece 122. The chamber body 121 is provided with a feed port 1212, an injection cavity 1211 and an injection port 1213. The feed port 1212 and the injection port 1213 are respectively connected to the injection cavity 1211. The injection port 1213 is used to connect to the cavity of the mold 200. The injection piece 122 is slidably arranged in the injection cavity 1211. One end of the conveying pipe 130 is sealedly connected to the discharge port 1112, and the end of the conveying pipe 130 away from the discharge port 1112 is sealedly connected to the feed port 1212.
[0053] The molten material in the accommodating cavity 1113 can be transported to the injection cavity 1211 through the transport pipe 130 under the push of the extruder 112 ; the molten material in the injection cavity 1211 can be transported to the cavity of the mold 200 through the injection port 1213 under the push of the injection part 122 .
[0054] Exemplarily, the conveying cylinder 110 may be made of a high temperature resistant material and used to convey molten metal. The feed port 1111 and the discharge port 1112 are respectively located on the sides of the cylinder body 111, and the specific orientation is not limited, as long as the feed port 1111 is in a sealed state when the discharge port 1112 discharges the material. In this embodiment, the feed port 1111 and the discharge port 1112 are respectively located on two opposite sides of the cylinder body 111. The accommodating chamber 1113 is respectively connected to the feed port 1111 and the discharge port 1112, so that the molten metal is added from the external molten pool to the accommodating chamber 1113 through the feed port 1111. The extrusion member 112 is arranged in the accommodating chamber 1113, and the molten metal can be squeezed from the discharge port 1112 to the injection chamber 120 under the action of the thrust device.
[0055] The injection chamber 120 is used to inject the molten metal delivered to the injection cavity 1211 into the mold cavity of the mold 200. The feed port 1212 is arranged at the side of the injection cavity 1211. The injection piece 122 is arranged through the injection cavity 1211. The injection port 1213 is located at the propulsion terminal of the injection piece 122 and is connected to the mold cavity of the mold 200. After the molten metal is delivered to the injection cavity 1211, the injection piece 122 injects the molten metal into the mold cavity of the mold 200 under the action of the thrust device.
[0056] Both ends of the conveying pipeline 130 are sealedly connected to the conveying cylinder 110 and the injection chamber 120 respectively, so that during the conveying process of the molten liquid, the molten liquid is conveyed in a full pipeline manner, thereby reducing the temperature loss of the molten liquid during the transfer process.
[0057] It should be noted that the thrust device in the embodiment of the present application 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.
[0058] In summary, the die-casting device 100 provided in the embodiment of the present application, through the pushing feeding of the extrusion piece 112, discharges the molten liquid from the discharge port 1112, and then transports it to the injection cavity 1211 of the injection chamber 120 through the conveying pipe 130. The whole process is pipeline-type transportation, which reduces the temperature loss of the molten liquid during transportation. At the same time, the injection piece 122 pushes and cooperates to slowly push the molten liquid in the injection cavity 1211 into the mold cavity of the mold 200, so that the residual air in the mold cavity of the mold 200 has enough time to be discharged, and finally discharged from the exhaust hole of the mold 200, so as to avoid turbulence of the molten liquid in the mold cavity of the mold 200 due to too fast injection speed, thereby improving the quality of the workpiece. Moreover, during the pressing process, the molten liquid is in a state between semi-liquid and semi-solid, which can form a product with high density, low stress, and perfect appearance that can be formed in precise and small positions.
[0059] In some embodiments, the delivery pipe 130 is arranged at an angle, and the end of the delivery pipe 130 connected to the injection chamber 120 is higher in the gravity direction than the end of the delivery pipe 130 connected to the delivery cylinder 110 .
[0060] Illustratively, the feed port 1212 of the injection chamber 120 is higher than the discharge port 1112 of the conveying cylinder 110 in the direction of gravity, so that through the inclined connection of the conveying pipe 130, the molten liquid in the conveying pipe 130 can flow back into the accommodating cavity 1113 of the conveying cylinder 110 during the injection operation.
[0061] See also Figure 4 and Figure 5 As shown, in some embodiments, the extrusion member 112 has a first preset position and a second preset position relative to the accommodating cavity. When the extrusion member 112 is located at the first preset position, the feed port 1111 is open, and the feed port 1111, the accommodating cavity 1113, and the discharge port 1112 are interconnected. When the extrusion member 112 is located at the second preset position, the extrusion member 112 seals the feed port 1111, and the accommodating cavity 1113 is connected to the discharge port 1112.
[0062] Exemplarily, the first preset position is the initial position of the extrusion member 112, at which time the first plunger 1122 is located above the first cavity 11131, and the feeding port 1111 is located in the middle of the first cavity 11131 and is open, so that the molten material can be added into the first cavity 11131 through the feeding port 1111. The second preset position is the position where the extrusion member 112 reaches the maximum displacement downward, at which time the first plunger 1122 is located at the bottom of the first cavity 11131, so that the molten material is pressed into the second cavity 11132 and ejected to the injection chamber 120 through the discharge port 1112, and at the same time, the outer wall of the first push rod 1121 fits with the wall of the first cavity 11131, so as to block the feeding port 1111 located on one side of the wall of the first cavity 11131, so as to prevent the molten material from backflowing during the extrusion process.
[0063] In some embodiments, the extrusion member 112 is in contact with the wall surface of the delivery cylinder 110 , and the feeding port 1111 is disposed on one side of the extrusion member 112 .
[0064] Exemplarily, the extrusion member 112 can perform a reciprocating pushing operation under the action of the thrust device, and the extrusion member 112 is arranged in close contact with the wall of the conveying cylinder 110, so that during the extrusion process, the molten liquid in the accommodating cavity 1113 is pushed out from the discharge port 1112, thereby preventing the molten liquid from leaking out from the side of the extrusion member 112 during the pushing process. At the same time, during the pushing process, the extrusion member 112 blocks the feed port 1212 to prevent the molten liquid from flowing back.
[0065] In some embodiments, the extrusion member 112 includes a first push rod 1121 and a first plunger 1122 . The first plunger 1122 is connected to one end of the first push rod 1121 . The first plunger 1122 is used to extrude the material melt to be discharged from the discharge port 1112 .
[0066] Exemplarily, the first plunger 1122 may be similar to a piston structure. Driven by the first push rod 1121 , the first plunger 1122 may make a reciprocating motion in the accommodating cavity 1113 , thereby squeezing the melt in the accommodating cavity 1113 into the injection chamber 120 .
[0067] See also Figure 4 and Figure 6 In some embodiments shown, the injection member 122 has a third preset position and a fourth preset position relative to the injection cavity 1211. When the injection member 122 is located at the third preset position, the feed port 1212 is in an open state, and the feed port 1212, the injection cavity 1211, the injection port 1213, the discharge port 1112 and the accommodating cavity 1113 are interconnected. When the extrusion member 112 is located at the second preset position, the injection member 122 extrude the material melt in the injection cavity 1211 and seal the feed port 1212, and the injection cavity 1211 is connected with the injection port 1213. When the injection member 122 is located at the fourth preset position, the injection member 122 pushes the material melt in the injection cavity 1211 into the mold cavity of the mold 200, and the extrusion member 112 is reset to the first preset position.
[0068] Exemplarily, the third preset position is the initial position of the injection piece 122, at which time the second plunger 1222 is located below the feed port 1212, and the feed port 1212 is in an open state, so that the molten liquid is extruded by the extrusion piece 112 and transported to the injection cavity 1211. The fourth preset position is the position where the injection piece 122 reaches the maximum displacement upward, at which time the second plunger 1222 is located at the injection port 1213 at the top of the injection cavity 1211, so that the molten liquid is injected into the mold cavity of the mold 200. At the same time, the outer wall of the second push rod 1221 fits the wall surface of the injection cavity 1211, thereby blocking the feed port 1212 located on one side of the wall surface of the injection cavity 1211, and preventing the molten liquid in the injection cavity 1211 from flowing out of the feed port 1212 during the injection process.
[0069] In some embodiments, the injection piece 122 is in contact with the wall surface of the injection chamber 120 , and the feed port 1212 is disposed on one side of the injection piece 122 .
[0070] For example, the injection piece 122 can be pushed back and forth under the action of the corresponding thrust device, and the injection piece 122 is arranged to fit the wall of the injection chamber 120, so that during the injection process, the molten liquid in the injection cavity 1211 is pushed out from the injection port 1213, preventing the molten liquid from leaking out from the side of the injection piece 122 during the pushing process. At the same time, during the pushing process, the injection piece 122 blocks the feed port 1212 to prevent the molten liquid from flowing back.
[0071] Furthermore, during the die-casting process, after the extrusion member 112 squeezes the molten metal into the injection cavity 1211, the injection member 122 is immediately pushed forward to lift the molten metal in the injection cavity 1211 and block the feed port 1212 to prevent the molten metal from flowing back. The extrusion member 112 is reset, and the molten metal in the pipeline flows back into the accommodating cavity 1113. The injection member 122 is simultaneously pushed continuously toward the mold 200, and the molten metal is injected into the mold cavity of the mold 200 and reset.
[0072] In some embodiments, the injection piece 122 includes a second push rod 1221 and a second plunger 1222 . The second plunger 1222 is connected to one end of the second push rod 1221 . The second plunger 1222 is used to push the molten material into the cavity of the mold 200 .
[0073] Exemplarily, the second plunger 1222 may be a piston structure similar to the first plunger 1122 . Driven by the second push rod 1221 , the second plunger 1222 may reciprocate in the injection cavity 1211 , thereby injecting the molten metal in the injection cavity 1211 into the cavity of the mold 200 .
[0074] In some embodiments, the accommodating chamber 1113 includes a first cavity 11131 and a second cavity 11132 which are independent of each other, the first cavity 11131 is connected to the second cavity 11132, the feeding port 1111 is connected to the first cavity 11131, the discharging port 1112 is connected to the second cavity 11132, and the extrusion piece 112 is disposed in the first cavity 11131.
[0075] Exemplarily, the first cavity 11131 is a feed cavity and is connected to the feeding port 1111, and the second cavity 11132 is a discharge cavity and is connected to the discharge port 1112, so that the molten metal is added into the first cavity 11131 through the feeding port 1111, and then discharged from the second cavity 11132 and the discharge port 1112 under the extrusion of the extruder 112.
[0076] A feeding hopper may be provided at one end of the feeding port 1111 away from the first cavity 11131. The feeding hopper has a conical structure, so that when feeding, the melt is added to the feeding hopper and flows along the wall of the feeding hopper into the feeding port 1111 and the first cavity 11131. The first cavity 11131 and the second cavity 11132 may be connected at a certain angle, so as to adjust the direction of the discharge port 1112 to meet the requirements of melt transportation in different directions.
[0077] In some embodiments, the delivery cylinder 110 further includes a partition 113 , and the partition 113 separates the accommodating cavity 1113 into a first cavity 11131 and a second cavity 11132 .
[0078] Exemplarily, the first cavity 11131 and the second cavity 11132 are both arranged vertically, the partition 113 separates the first cavity 11131 and the second cavity 11132, and the bottom end of the first cavity 11131 is connected to the bottom end of the second cavity 11132 to form a U-shaped structure. When the surface pressure of the melt in the two cavities is the same, the melt heights in the two cavities are the same.
[0079] In some embodiments, the die-casting device 100 further includes a heating element 140 , which is disposed on a peripheral side of the delivery cylinder 110 .
[0080] Exemplarily, the heating element 140 can heat and keep the conveying cylinder 110 warm, so that the inside of the accommodating chamber 1113 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 140, and the conveying cylinder 110 can be kept warm and heated during the die-casting process, so that the molten liquid always maintains a high temperature state, ensuring the die-casting quality of the molten liquid and the workpiece.
[0081] In some embodiments, a temperature sensor may be provided in the accommodating chamber 1113, and a corresponding temperature threshold may be set according to the material. When the temperature inside the accommodating chamber 1113 is lower than the preset temperature threshold, the heating element 140 automatically performs heating operation, which can reduce the energy consumption of the heating element 140 to a certain extent, while ensuring that the high temperature of the melt is maintained.
[0082] In some embodiments, the heating element 140 may be an electromagnetic heater. The electromagnetic heater includes an electromagnetic coil. The electromagnetic coil is wound around the circumference of the second cylinder 111 .
[0083] 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.
[0084] 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.
[0085] See also Figure 7 As shown, an embodiment of the present application further provides a die-casting method, which uses the die-casting device 100 in any of the above embodiments.
[0086] Die casting methods include:
[0087] S10 , adjusting the extrusion member 112 to a first preset position, opening the feeding port 1111 of the conveying cylinder 110 , and adding the material melt into the accommodating chamber 1113 of the conveying cylinder 110 .
[0088] See also Figure 1 As shown, for example, when adding material melt into the conveying cylinder 110, the extrusion piece 112 is located at the top of the first cavity 11131, and the feeding port 1111 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 feeding port 1111.
[0089] At the same time, in order to ensure the temperature of the melt, the heating element 140 can be started synchronously to heat and keep the melt in the conveying cylinder 110 warm, thereby ensuring that the melt maintains the highest temperature during the injection process.
[0090] S20, adjusting the injection piece 122 to a third preset position so that the feed port 1212 of the injection chamber 120 is opened.
[0091] Exemplarily, the injection piece 122 may be pre-adjusted to a third preset position below the feed port 1212 , so that the feed port 1212 is in an open state, so that the subsequent melt flows into the injection cavity 1211 through the delivery pipe 130 .
[0092] S30 , the extrusion member 112 is pushed toward the second preset position and blocks the feed port 1111 , and the molten material enters the injection cavity 1211 .
[0093] See also Figure 4 As shown, illustratively, after the molten metal is fed, the extrusion member 112 can extrude the molten metal downward under the action of the thrust device, and the first plunger 1122 reaches the second preset position at the bottom of the first cavity 11131 downward, so that the molten metal flows into the injection cavity 1211 through the conveying pipe 130 and the feed port 1212. At the same time, the first push rod 1121 of the extrusion member 112 blocks the feed port 1111 to prevent the molten metal from flowing back during the extrusion process.
[0094] S40, the injection component 122 is pushed toward the fourth preset position and blocks the feed port 1212, and the extrusion component 112 is reset to the first preset position.
[0095] See also Figure 5 As shown, illustratively, after the extrusion member 112 reaches the second preset position, the injection member 122 is pushed in the fourth preset direction, thereby pushing the molten liquid in the injection cavity 1211 upward, and the feed port 1212 is blocked by the second push rod 1221, so as to prevent the molten liquid in the injection cavity 1211 from flowing out of the feed port 1212 during the injection process. At this time, the extrusion member 112 is reset to the first preset direction, and the molten liquid in the conveying pipe 130 gradually flows back to the accommodating cavity 1113.
[0096] S50, the injection piece 122 reaches the fourth preset position, and the molten material is injected into the cavity of the mold 200.
[0097] See also Figure 5 As shown, illustratively, during the resetting process of the extrusion piece 112, the injection piece 122 continues to move upward, and finally injects the molten liquid in the injection cavity 1211 into the cavity of the mold 200, and all the molten liquid remaining in the delivery pipe 130 flows back into the delivery cylinder 110. After the injection is completed, the injection piece 122 is reset to the third preset position. Through the cyclic operation of the extrusion piece 112 and the injection piece 122, the production of the die-casting workpiece is completed.
[0098] The die-casting method provided in the embodiment of the present application reduces the temperature loss of the molten liquid during the transportation process through the closed conveying of the conveying pipeline 130 and the whole pipeline conveying. The molten liquid in the injection cavity 1211 is slowly pushed into the mold cavity 200 by the cooperation of the extrusion part 112 and the injection part 122, so that the residual air in the mold cavity 200 has enough time to be discharged, and finally discharged from the exhaust hole of the mold 200, so as to avoid the turbulence of the molten liquid in the mold cavity 200 due to the injection speed being too fast, thereby improving the quality of the workpiece. Moreover, during the pressing process, the solution is in a state between semi-liquid and semi-solid, and the finished product of the die-casting workpiece has high density and low stress, and the precise and fine positions can also form products with perfect appearance, which have the appearance of the anode state and mechanical properties of the plate processed by CNC (Computerized Numerical Control). The density of the product can exceed 98%, reducing the defective products with pores or high-speed injection.
[0099] 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.
[0100] 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 die casting device, It is characterized in that include: A conveying cylinder, the conveying cylinder comprises a cylinder body and an extrusion piece, the cylinder body is provided with a feeding port, a containing cavity and a discharging port, the feeding port and the discharging port are respectively communicated with the containing cavity, the containing cavity is used to contain the material melt added from the feeding port, and the extrusion piece is slidably arranged in the containing cavity; An injection chamber, the injection chamber comprises a chamber body and an injection piece, the chamber body is provided with a feed port, an injection cavity and an injection port, the feed port and the injection port are respectively communicated with the injection cavity, the injection port is used to connect with the mold cavity, and the injection piece is slidably arranged in the injection cavity; A conveying pipeline, one end of which is sealedly connected to the discharge port, and one end of which is away from the discharge port is sealedly connected to the feed port; The molten material in the accommodating cavity can be transported to the injection cavity through the conveying pipe under the push of the extrusion part; the molten material in the injection cavity can be transported to the mold cavity through the injection port under the push of the injection part.
2. The die casting device according to claim 1, It is characterized in that The conveying pipeline is arranged in an inclined manner, and the height of one end of the conveying pipeline connected to the injection chamber in the gravity direction is higher than that of one end of the conveying pipeline connected to the conveying cylinder.
3. The die casting device according to claim 1, It is characterized in that The extrusion member has a first preset position and a second preset position relative to the accommodating cavity; When the extrusion member is located at the first preset position, the feeding port is in an open state, and the feeding port, the accommodating 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 feeding port, and the accommodating cavity is communicated with the discharge port.
4. The die casting device according to claim 3, It is characterized in that The extrusion member includes a first push rod and a first plunger, wherein the first plunger is connected to one end of the first push rod, and the first plunger is used to squeeze the material melt in the accommodating cavity to be discharged from the discharge port.
5. The die casting device according to claim 3, It is characterized in that The injection piece has a third preset position and a fourth preset position relative to the injection cavity; When the injection member is located at the third preset position, the feed port is in an open state, and the feed port, the injection cavity, the injection port, the discharge port and the accommodating cavity are interconnected; When the extrusion member is located at the second preset position, the injection member squeezes the material melt in the injection cavity and seals the feed port, and the injection cavity is connected to the injection port; When the injection component is located at the fourth preset position, the injection component pushes the molten material in the injection cavity into the mold cavity, and the extrusion component is reset to the first preset position.
6. The die casting device according to claim 5, It is characterized in that The injection part includes a second push rod and a second plunger, wherein the second plunger is connected to one end of the second push rod, and the second plunger is used to push the molten material in the injection cavity into the mold cavity.
7. The die casting device according to claim 1, It is characterized in that The accommodating cavity includes a first cavity and a second cavity that are independent of each other, the first cavity is connected to the second cavity, the feeding port is located at one side of the first cavity and is connected to the first cavity, the discharging port is located at one side of the second cavity and is connected to the second cavity, and the extrusion piece is slidably disposed in the first cavity.
8. The die casting device according to claim 7, It is characterized in that The delivery cylinder further includes a partition plate, which separates the accommodating cavity into the first cavity and the second cavity.
9. The die casting device according to any one of claims 1 to 8, It is characterized in that The die-casting device further comprises a heating element, and the heating element is arranged on the peripheral side of the conveying cylinder.
10. A die casting method, It is characterized in that Using the die-casting device according to any one of claims 1 to 9, the die-casting method comprises: The extruder is adjusted to a first preset position, so that the feeding port of the conveying cylinder is opened, and the material melt is added into the containing cavity of the conveying cylinder; Adjust the injection piece to the third preset position so that the feed port of the injection chamber is opened; The extrusion member is pushed toward the second preset position and blocks the feeding port, and the molten material enters the injection cavity; The injection component is pushed toward the fourth preset position and blocks the feed port, and the extrusion component is reset to the first preset position; The injection piece reaches the fourth preset position, and the molten material is injected into the mold cavity.
Citation Information
Cited By
Die casting device and die casting method
WO2026045629A1