Die casting device and vehicle manufacturing equipment

Abstract

The utility model discloses a die-casting device and vehicle manufacturing equipment. The die-casting device comprises a die-casting die and at least one ultrasonic assembly. The die-casting die is provided with a die-casting cavity used for containing metal melt. The die-casting cavity is provided with a die-casting inlet, and metal melt enters the die-casting cavity through the die-casting inlet. The ultrasonic assembly is arranged in the die-casting die close to the die-casting inlet and provided with an ultrasonic output end, and the ultrasonic output end faces the die-casting inlet so that ultrasonic energy generated by the ultrasonic assembly can be transmitted to the metal melt. And the ultrasonic output end is arranged towards the die-casting inlet, so that ultrasonic energy can be concentrated and efficiently transferred into the metal melt. And moreover, the device can crush dendritic crystals in the metal melt, the flowability and filling property of the metal melt are improved, the die casting process is more stable and reliable, and therefore the dimensional precision of a casting and the mechanical property of the filling tail end are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle manufacturing, and in particular to a die-casting device and vehicle manufacturing equipment. Background Art

[0002] With the development of vehicle manufacturing technology, the ultra-large integrated die-casting technology has emerged with the development of the automotive industry. To meet the lightweight requirements, the ultra-large integrated die-casting technology is applied to power / structural components such as the integrated rear floor and integrated front cabin of automobiles.

[0003] The die-castings formed by using the ultra-large integrated die-casting technology have high precision and high structural strength. However, during the die-casting process, as the temperature of the melt gradually decreases, the fluidity decreases, resulting in a reduction in the mechanical properties of the castings. Therefore, it is necessary to improve the above problems and enhance the mechanical properties of the end of the casting. Summary of the Utility Model

[0004] In view of the above problems, this application provides a die-casting device and vehicle manufacturing equipment, which can improve the fluidity of the melt and the mechanical properties of the end of the casting.

[0005] In a first aspect, this application provides a die-casting device, including a die-casting mold and at least one ultrasonic component. The die-casting mold has a die-casting cavity for accommodating a metal melt. The die-casting cavity has a die-casting inlet through which the metal melt enters the die-casting cavity. The ultrasonic component is disposed in the die-casting mold near the die-casting inlet. The ultrasonic component has an ultrasonic output end that faces the die-casting inlet to transmit the ultrasonic energy generated by the ultrasonic component to the metal melt.

[0006] In the technical solution of the embodiment of this application, a die-casting cavity is provided in the die-casting mold to provide a space for the metal melt to cool and solidify to form a casting. The die-casting cavity has a specific shape and size, and the metal melt can flow along a predetermined path and fill the entire cavity after being injected, finally forming a casting with the required shape, so as to obtain a casting with high manufacturing precision and structural strength. The ultrasonic component is arranged inside the die-casting mold, so that the ultrasonic energy can directly act on the metal melt that has just entered the die-casting cavity, improving the efficiency and effect of ultrasonic treatment. In particular, by arranging the ultrasonic output end facing the die-casting inlet, the ultrasonic energy can be concentrated and efficiently transmitted into the metal melt. It can break the dendrites in the metal melt, improve the fluidity and filling property of the metal melt, make the die-casting process more stable and reliable, and thus improve the dimensional accuracy and shape accuracy of the casting.

[0007] In some embodiments, the die-casting mold has a first die-casting mold and a second die-casting mold. A die-casting cavity is formed between the first die-casting mold and the second die-casting mold. A receiving cavity is provided at a position of the first die-casting mold close to the die-casting cavity for receiving an ultrasonic component. With the above structure, the first die-casting mold and the second die-casting mold are oppositely arranged to form a die-casting cavity, which facilitates the demolding of the cast after molding. The receiving cavity is formed in the first die-casting mold, which facilitates the arrangement of the ultrasonic component and improves the transmission efficiency of ultrasonic energy.

[0008] In some embodiments, the receiving cavity is communicated with the die-casting inlet, and the end face of the ultrasonic output end facing the die-casting inlet does not exceed the surface of the first die-casting mold facing the second die-casting mold. In the above structure, by setting the ultrasonic output end not to exceed the first die-casting mold, the risk of the ultrasonic output end entering the die-casting cavity and interfering with the flow of the molten metal is reduced, and the fluidity of the molten metal is improved while ultrasonic vibration is applied to the molten metal.

[0009] In some embodiments, the ultrasonic component includes an ultrasonic generator and a horn. One end of the horn is connected to the ultrasonic generator. The other end of the horn is arranged facing the die-casting inlet, and the horn is used to transmit ultrasonic energy into the die-casting cavity. In the above technical solution, the ultrasonic generator can convert electrical energy into ultrasonic vibration, and the horn can transmit ultrasonic energy to the molten metal, improve the fluidity of the melt, break dendrites inside the molten metal, and reduce bubbles inside the molten metal. The end of the horn is arranged facing the die-casting inlet, which can perform ultrasonic vibration on the molten metal entering the die-casting cavity, improve the fluidity of the end of the molten metal, and improve the overall structural strength and molding efficiency of the casting.

[0010] In some embodiments, along the direction of the ultrasonic component facing the die-casting inlet, the cross-sectional area of the horn gradually decreases. By arranging the tip of the horn facing the die-casting inlet, ultrasonic energy can be transmitted more concentratedly to the target position, improving the efficiency of ultrasonic vibration, the fluidity of the molten metal, and the mechanical properties of the casting after molding.

[0011] In some embodiments, a groove is formed by concave inward on the surface of one end of the horn facing the ultrasonic generator, and a convex portion is formed by protruding outward on the surface of one end of the ultrasonic generator facing the horn. The groove and the convex portion cooperate to connect the horn and the ultrasonic generator. In the above structure, by setting the groove and the convex portion to connect the horn and the ultrasonic generator, the convenience of assembly and the efficiency of maintenance are improved.

[0012] In some embodiments, an external thread is provided on the convex portion, and an internal thread matching the external thread is provided on the inner wall of the groove. By thread-connecting the horn and the ultrasonic generator, the connection strength and stability of the two are improved, the loss of ultrasonic vibration transmission is reduced, and the energy utilization efficiency is improved.

[0013] In some embodiments, the ultrasonic component includes two locking blocks arranged oppositely, and a fixing cavity is formed between the two locking blocks for fixing the ultrasonic generator and the horn. During the die-casting process, the die-casting mold and the molten metal will be subjected to large impact forces and vibrations. If the ultrasonic generator is directly fixed to the mold, these vibrations may be directly transmitted to the ultrasonic generator, affecting its stability and working precision. In the above structure, using the locking block as an intermediate connecting piece can effectively reduce the vibration transmission and protect the ultrasonic generator from damage.

[0014] In some embodiments, connecting holes are respectively provided on the two locking blocks, and the connecting holes are connected to the first die-casting mold through connecting bolts. The above structure improves the connection strength between the locking block and the die-casting mold and improves the stability of the die-casting process.

[0015] In some embodiments, a first convex portion protrudes from one side surface of at least one locking block facing the horn, and a first concave portion is recessed in the surface of the horn facing the locking block. The first convex portion and the first concave portion cooperate to limit the relative movement of the horn with respect to the locking block. And / or, a second convex portion protrudes from one side surface of at least one locking block facing the ultrasonic generator, and a second concave portion is recessed in the surface of the ultrasonic generator facing the locking block. The second convex portion and the second concave portion cooperate to limit the relative movement of the ultrasonic generator with respect to the locking block.

[0016] In the above technical solution, by providing the first convex portion and the first concave portion to cooperate with each other, the risk of the horn moving axially relative to the locking block is restricted. By providing the second convex portion and the second concave portion to cooperate with each other, the risk of the ultrasonic generator moving axially relative to the locking block is restricted. The above structure cooperates with other connection structures to limit the movement of the ultrasonic component relative to the die-casting mold, improves the stability of ultrasonic vibration transmission, and reduces the energy loss during the transmission process.

[0017] In some embodiments, the die-casting device further includes a control component. The control component is used to control the turning on, turning off and ultrasonic generating frequency of the ultrasonic generator. In the above technical solution, by providing a power source, an energy source is provided for the vibration of the ultrasonic generator, and by providing a control component to adjust the vibration magnitude and duration of the ultrasonic generator, the control efficiency and precision are improved, thereby improving the fluidity of the molten metal.

[0018] In a second aspect, the present application provides a vehicle manufacturing device, which includes the die-casting device in the above embodiments.

[0019] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. Description of the Drawings

[0020] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0021] Figure 1 Structural schematic diagram of a die-casting device according to some embodiments of the present application;

[0022] Figure 2 is Figure 1 Enlarged structural schematic diagram at the circular frame A in

[0023] Figure 3 Structural schematic diagram of an ultrasonic component according to some embodiments of the present application;

[0024] Figure 4 Structural schematic diagram of an ultrasonic component according to some other embodiments of the present application;

[0025] Figure 5 Exploded structural schematic diagram of an ultrasonic component according to some embodiments of the present application.

[0026] Detailed description of the reference numerals

[0027] 10. Die-casting device; 1. Die-casting mold; 101. Die-casting cavity; 102. Die-casting inlet; 103. First die-casting mold; 104. Second die-casting mold; 2. Ultrasonic component; 201. Ultrasonic output end; 202. Ultrasonic generator; 203. Horn; 204. Convex part; 205. Locking block; 206. First convex part; 207. First concave part; 208. Second convex part; 209. Second concave part; 210. Fixed cavity; 211. Connecting hole; 3. Control component. Detailed implementation manners

[0028] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0030] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0032] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0033] In the description of the embodiments of the present application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0034] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also 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 elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] In this application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0037] In the embodiments of this application, the same reference numerals represent the same components. And for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0038] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented in accordance with the content of the specification. And in order to make the above and other purposes, features, and advantages of this application more obvious and understandable, the specific embodiments of this application are specifically exemplified below.

[0039] Currently, large automotive parts such as battery boxes, integrated rear floors, and integrated front compartments can be formed by die-casting. Die-casting is a metal casting process, and its manufacturing method is mainly based on the principle of applying high pressure to molten metal using the die-casting cavity of the mold. The manufacturing method of die-casting usually includes the following key steps: mold preparation - mold combination - pouring molten metal - injection and filling. First, clean the mold to ensure that the mold surface is clean and free of impurities, and spray an anti-bonding agent. Then, control the mold to close to form the die-casting cavity and the runner. Then inject the molten metal into the die-casting cavity. Then use an injection punch or a high-pressure system to squeeze the molten metal into the mold cavity. During this process, the molten metal quickly fills the cavity under high pressure and expels the air and impurities in the cavity. Subsequently, the molten metal cools and solidifies in the mold cavity to form a casting. During this process, a certain pressure needs to be maintained to ensure that the casting is dense and defect-free. After cooling is completed, the molten metal is completely solidified, and the mold is controlled to open to remove the casting.

[0040] The die-casting process has the advantages of high production efficiency, high casting accuracy, and high casting structural strength, and it has also achieved good applications in the vehicle production process.

[0041] However, during the die-casting production process, along the direction of the flow of the molten metal, the fluidity of the molten metal at the end of the die-casting cavity decreases, and the poor fusion of the components at the end leads to a decline in mechanical properties. In particular, when the length of the component is relatively large, the performance of the end of the casting exceeding 1 meter in length cannot meet the requirements of strength and accuracy.

[0042] Based on the above problems, the present application provides a die-casting device, including a die-casting mold and an ultrasonic component. By providing a die-casting cavity in the die-casting mold, a space is provided for the molten metal to cool and solidify to form a casting. The die-casting cavity has a specific shape and size, and the molten metal can flow along a predetermined path and fill the entire cavity after injection, finally forming a casting with the required shape, so as to obtain a casting with higher manufacturing accuracy and higher structural strength. The ultrasonic component is arranged inside the die-casting mold, so that ultrasonic energy can directly act on the molten metal just entering the die-casting cavity, improving the efficiency and effect of ultrasonic treatment. In particular, by setting the ultrasonic output end towards the die-casting inlet, ultrasonic energy can be concentrated and efficiently transmitted into the molten metal. It can break dendrites in the molten metal, improve the fluidity and filling property of the molten metal, make the die-casting process more stable and reliable, and thus improve the dimensional accuracy and shape accuracy of the casting.

[0043] The die-casting device and vehicle manufacturing equipment provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] Please refer to Figures 1 to 3 , Figure 1 which is a schematic structural diagram of the die-casting device of some embodiments of the present application, Figure 2 and Figure 1 is an enlarged structural diagram of the circular frame A in Figure 3 which is a schematic structural diagram of the ultrasonic component of some embodiments of the present application.

[0045] As shown in the figure, the die-casting device 10 provided by the embodiments of the present application includes a die-casting mold 1 and at least one ultrasonic component 2. The die-casting mold 1 has a die-casting cavity 101 for accommodating molten metal. The die-casting cavity 101 has a die-casting inlet 102, and the molten metal enters the die-casting cavity 101 through the die-casting inlet 102. The ultrasonic component 2 is arranged in the die-casting mold 1 near the die-casting inlet 102. The ultrasonic component 2 has an ultrasonic output end 201, and the ultrasonic output end 201 faces the die-casting inlet 102 to transmit the ultrasonic energy generated by the ultrasonic component 2 to the molten metal.

[0046] In the die-casting mold 1, the die-casting cavity 101 is used to accommodate and shape the molten metal. The die-casting mold 1 is usually made of materials with high thermal conductivity, high strength and wear resistance to withstand the high-temperature and high-pressure molten metal. The die-casting inlet 102 is the channel for the molten metal to enter the die-casting cavity 101. All the molten metal needs to enter the die-casting cavity 101 through the die-casting inlet 102.

[0047] The ultrasonic component 2 is disposed within the die-casting mold 1 such that ultrasonic energy can directly act on the molten metal entering the die-casting cavity 101. The ultrasonic output end 201 is the output part of the ultrasonic vibration of the ultrasonic component 2 and is used to transfer ultrasonic energy to the molten metal. Ultrasonic energy generates cavitation effects, acoustic streaming effects, and mechanical vibration effects in the molten metal, and these effects can refine the grains in the molten metal, promote the discharge of gases and impurities, and improve the fluidity and filling ability of the molten metal. During the die-casting process, the molten metal is injected into the die-casting cavity 101 through the die-casting inlet 102. At the same time, the ultrasonic component 2 starts to operate, transferring ultrasonic energy to the molten metal, which can improve the fluidity and filling ability of the molten metal, especially by breaking dendrites to enhance the fluidity of the molten metal, thereby improving the mechanical properties at the end of the die-cast part.

[0048] Optionally, multiple die-casting inlets 102 can be provided in the die-casting mold 1, and the number of ultrasonic components 2 can be correspondingly set to multiple. The multiple ultrasonic components 2 are respectively disposed at one die-casting inlet 102 to further enhance the fluidity of the molten metal.

[0049] In the technical solution of the embodiment of the present application, a die-casting cavity 101 is provided in the die-casting mold 1 to provide a space for the molten metal to cool and solidify to form a casting. The die-casting cavity 101 has a specific shape and size, and the molten metal can flow along a predetermined path and fill the entire cavity after being injected, finally forming a casting with the required shape to obtain components with high manufacturing precision and structural strength. The ultrasonic component 2 is disposed inside the die-casting mold 1 such that ultrasonic energy can directly act on the molten metal just entering the die-casting cavity 101, improving the efficiency and effect of ultrasonic treatment. In particular, by arranging the ultrasonic output end 201 towards the die-casting inlet 102, ultrasonic energy can be concentrated and efficiently transferred into the molten metal. It can break dendrites in the molten metal, improve the fluidity and filling property of the molten metal, make the die-casting process more stable, thereby improving the dimensional accuracy and shape accuracy of the die-cast part, as well as improving the structural strength of the die-cast part.

[0050] In some embodiments of the present application, the die-casting mold 1 has a first die-casting mold 103 and a second die-casting mold 104. A die-casting cavity 101 is formed between the first die-casting mold 103 and the second die-casting mold 104. A receiving cavity is provided at a position of the first die-casting mold 103 close to the die-casting cavity 101, and the receiving cavity is used to receive the ultrasonic component 2. Exemplarily, the first die-casting mold 103 is a stationary mold, the second die-casting mold 104 is a movable mold, or the first die-casting mold 103 is a movable mold and the second die-casting mold 104 is a stationary mold.

[0051] The first die-casting mold 103 and the second die-casting mold 104 are arranged opposite to each other, jointly forming a closed die-casting cavity 101. After the molten metal is injected into the die-casting cavity 101, it can cool and solidify within a limited space to form the required shape of the casting. The die-casting cavity 101 is located between the first die-casting mold 103 and the second die-casting mold 104, and is the space where the molten metal is injected and cooled into shape. Its shape and size directly determine the shape and size of the final casting. Moreover, the first die-casting mold 103 and the second die-casting mold 104 are arranged opposite to each other, enabling the die-cast part to be more easily ejected from the mold after forming, reducing the resistance and damage during demolding, and improving the integrity and surface quality of the casting.

[0052] Exemplarily, the surface of the first die-casting mold 103 facing the second die-casting mold 104 is recessed to form a first die-casting groove, and the surface of the second die-casting mold 104 facing the first die-casting mold 103 is recessed to form a second die-casting groove. The first die-casting groove and the second die-casting groove jointly form the die-casting cavity 101. And the circumferential sealing connection of the first die-casting mold 103 and the second die-casting mold 104 is used to improve the sealing performance of the die-casting cavity 101.

[0053] Exemplarily, a receiving cavity is recessed on the surface of the first die-casting mold 103 facing the die-casting cavity 101. It can be understood that the depth of the receiving cavity recessed along the surface of the first die-casting mold 103 is greater than the depth of the first die-casting groove recessed to accommodate the ultrasonic component 2, reducing the risk of interference between the ultrasonic component 2 and the molten metal. Moreover, the shape of the receiving cavity matches the outer shape structure of the ultrasonic component 2, and the ultrasonic component 2 can form a sealed connection with the receiving cavity, reducing the risk of molten metal entering the receiving cavity during die-casting.

[0054] The receiving cavity not only provides an installation space for the ultrasonic component 2, but also reduces the possible damage that the ultrasonic component 2 may suffer when directly exposed to the die-casting environment. At the same time, the ultrasonic component 2 is placed as close as possible to the molten metal, improving the transmission efficiency of ultrasonic energy. During die-casting, ultrasonic energy can be transmitted to the molten metal through these components, causing the dendrites in the molten metal to break, promoting its flow, reducing the formation of bubbles and inclusions, and thus improving the density and surface quality of the die-cast part.

[0055] In some embodiments of the present application, the receiving cavity is communicated with the die-casting inlet 102, and the end face of the ultrasonic output end 201 facing the die-casting inlet 102 does not exceed the surface of the first die-casting mold 103 facing the second die-casting mold 104.

[0056] The communication between the receiving cavity and the die-casting inlet 102 enables the ultrasonic energy to start acting simultaneously when the molten metal is injected into the die-casting cavity 101. This allows the ultrasonic vibration to affect the flow of the melt as early as possible, and the ultrasonic energy can directly act on the molten metal that has just entered the die-casting cavity 101, improving the fluidity and solidification quality of the melt, further shortening the die-casting cycle and increasing the production efficiency.

[0057] The ultrasonic output end 201 is designed not to exceed the surface of the first die-casting mold 103 facing the second die-casting mold 104, reducing the risk of the ultrasonic output end 201 directly interfering with the flow of the molten metal. If the ultrasonic output end 201 extends too far out of the mold surface, it may become an obstacle to the melt flow, and even cause vortices or stagnation of the melt around the output end, thus affecting the quality of the casting. By setting the ultrasonic output end 201 in this position, the ultrasonic energy acts on the melt at the optimal angle and intensity, neither causing local overheating or excessive vibration due to being too close, nor weakening the effect due to being too far. In this way, it can not only give full play to the promoting effect of ultrasonic vibration on the fluidity of the melt, but also avoid unnecessary interference with the melt flow.

[0058] In the above structure, ultrasonic vibration can reduce the viscosity of the molten metal, increase its fluidity, make the melt easier to fill every corner of the mold, and reduce defects caused by poor flow. Moreover, it can promote the discharge of gas and inclusions in the melt, reduce the formation of defects such as shrinkage cavities and porosity, thereby improving the density and mechanical properties of the casting.

[0059] In some alternative embodiments, the end face of the ultrasonic output end 201 facing the die-casting inlet 102 is flush with the surface of the first die-casting mold 103 facing the second die-casting mold 104. The above structure improves the efficiency of ultrasonic vibration while reducing the interference of the ultrasonic output end 201 on the molten metal.

[0060] In some embodiments of the present application, the ultrasonic component 2 includes an ultrasonic generator 202 and a horn 203. The ultrasonic generator 202 is disposed in the accommodation cavity, and the ultrasonic generator 202 can generate ultrasonic energy. The horn 203 is disposed in the accommodation cavity, and one end of the horn 203 is connected to the ultrasonic generator 202. The other end of the horn 203 is arranged facing the die-casting inlet 102, and the horn 203 is used to transmit the ultrasonic energy into the die-casting cavity 101.

[0061] The ultrasonic generator 202 is the core component of the ultrasonic component 2. The ultrasonic generator 202 can convert electrical energy into ultrasonic vibration energy. One end is tightly connected to the ultrasonic generator 202, so that the ultrasonic vibration energy can be transmitted to the horn 203 without loss. The other end is arranged facing the die-casting inlet 102, and the ultrasonic vibration energy is directly applied to the molten metal entering the die-casting cavity 101.

[0062] The horn 203 is used to transmit ultrasonic energy. The other end of the horn 203 is arranged facing the die-casting inlet 102, and the ultrasonic vibration can directly act on the end of the molten metal. Therefore, it can improve the fluidity of the end of the melt and improve the filling effect of the end area of the long-length casting, thereby improving the overall mechanical properties of the casting.

[0063] In some embodiments of the present application, along the direction of the ultrasonic component 2 towards the die-casting inlet 102, the cross-sectional area of the horn 203 gradually decreases.

[0064] Exemplarily, the cross-sectional area of the horn 203 gradually decreases along the direction towards the die-casting inlet 102, and the end of the horn 203 forms an "inverted horn shape" or "conical" horn 203. It utilizes the principle that when sound waves propagate in a medium, a change in cross-sectional area will cause a change in the amplitude of the sound waves. The decrease in the cross-sectional area at the tip of the horn 203 causes the amplitude of the sound waves to gradually increase during propagation, thus reaching the maximum value at the tip. This design enables the ultrasonic energy to be more concentratedly transmitted to the molten metal near the die-casting inlet 102, improving the overall efficiency of ultrasonic vibration. The action of ultrasonic waves can refine metal grains, reduce dendrites, improve the density and mechanical properties of the casting. At the same time, the improved fluidity also helps to reduce defects such as cold shuts and flow marks on the surface of the casting, enhancing the structural accuracy and mechanical properties of the casting.

[0065] As Figure 3 shown, in some embodiments of the present application, the surface of one end of the horn 203 facing the ultrasonic generator 202 is concavely formed with a groove, and the surface of one end of the ultrasonic generator 202 facing the horn 203 is convexly formed with a convex portion 204. The groove and the convex portion 204 cooperate to connect the horn 203 and the ultrasonic generator 202. In the above structure, by providing the groove and the convex portion 204 to connect the horn 203 and the ultrasonic generator 202, the convenience of assembly and the efficiency of maintenance are improved.

[0066] In some embodiments of the present application, the convex portion 204 is provided with an external thread, and the inner wall of the groove is provided with an internal thread matching the external thread. By threadedly connecting the horn 203 and the ultrasonic generator 202, the connection strength and stability between the two are improved, and the loss of ultrasonic vibration transmission is reduced, improving the energy utilization efficiency.

[0067] As Figure 4 and Figure 5 shown, in some embodiments of the present application, the ultrasonic component 2 includes two locking blocks 205 arranged oppositely. The locking blocks 205 are arranged in the accommodating cavity, and a fixing cavity 210 is formed between the two locking blocks 205 for fixing the ultrasonic generator 202 and the horn 203.

[0068] During the die-casting process, the die-casting mold 1 and the molten metal will be subjected to large impact forces and vibrations. If the ultrasonic generator 202 is directly fixed on the mold, these vibrations may be directly transmitted to the ultrasonic generator 202, affecting its stability and working accuracy. In the above structure, using the locking blocks 205 as intermediate connecting members can effectively reduce vibration transmission and protect the ultrasonic generator 202 from damage.

[0069] In some embodiments of the present application, connection holes 211 are respectively provided on two locking blocks 205, and the connection holes 211 are connected to the first die-casting mold 103 through connection bolts.

[0070] In the above structure, this physical connection method is more firm than the traditional indirect connection or the method of only relying on friction for fixation. The tightening force of the connection bolts can ensure that the locking block 205 will not loosen or shift due to impact or vibration during the die-casting process. When the locking block 205 or the die-casting mold is worn due to long-term use, maintenance and replacement can be easily carried out by loosening the connection bolts. This design improves the maintainability of the equipment and reduces the maintenance cost.

[0071] As Figure 5 shown, in some embodiments of the present application, on one side surface of at least one locking block 205 facing the horn 203, a first convex portion 206 protrudes, and on the surface of the horn 203 facing the locking block 205, a first concave portion 207 is recessed. The first convex portion 206 and the first concave portion 207 cooperate to limit the relative movement of the horn 203 with respect to the locking block 205.

[0072] In some alternative embodiments, on one side surface of at least one locking block 205 facing the ultrasonic generator 202, a second convex portion 208 protrudes, and on the surface of the ultrasonic generator 202 facing the locking block 205, a second concave portion 209 is recessed. The second convex portion 208 and the second concave portion 209 cooperate to limit the relative movement of the ultrasonic generator 202 with respect to the locking block 205.

[0073] Wherein, the cooperation between the first concave portion 207 and the first convex portion 206 means that the first convex portion 206 is disposed within the first concave portion 207, and the cooperation between the second concave portion 209 and the second convex portion 208 means that the second convex portion 208 is disposed within the second concave portion 209.

[0074] The first convex portion 206 on the locking block 205 and the first concave portion 207 on the horn 203 are closely matched. This design effectively restricts the movement of the horn 203 in the axial direction (i.e., the direction of ultrasonic vibration transmission). It improves the continuity and stability of ultrasonic vibration transmission, and reduces the loss of vibration energy or the deviation of the transmission direction caused by even a slight movement. Moreover, the cooperation between the convex portion 204 and the concave portion increases the contact area, improves the strength and stability of the connection. It reduces the stress concentration phenomenon caused by vibration, and helps to extend the service life of the components.

[0075] In addition to restricting the movement of the horn 203, by providing the second convex portion 208 on the locking block 205 and cooperating with the second concave portion 209 on the ultrasonic generator 202, the ultrasonic generator 202 is doubly locked. Further enhancing the connection between the ultrasonic assembly 2 and the die-casting mold 1, and improving the stability of each component in a high-vibration environment.

[0076] The ultrasonic generator 202 is the source of generating vibration energy, and its stability directly affects the transmission effect of the vibration energy. By restricting the movement of the ultrasonic generator 202, the energy loss during the vibration transmission can be reduced, and the utilization rate and transmission efficiency of the vibration energy can be improved.

[0077] As Figure 1 shown, in some embodiments of the present application, the die-casting device 10 further includes a control component 3. The control component 3 is used to control the turning on, turning off and ultrasonic generating frequency of the ultrasonic generator 202. The control component 3 is the intelligent control center in the die-casting device 10. It is located between the power supply and the ultrasonic generator 202 and is responsible for receiving operation instructions and controlling the operating state of the ultrasonic generator 202. Specifically, the control component 3 may have the following functions:

[0078] Turning on and off control: The operator can turn on or off the ultrasonic generator 202 through the control component 3 to achieve instant control of the ultrasonic vibration, improving the convenience and flexibility of the operation.

[0079] Frequency adjustment: The control component 3 can adjust the vibration frequency of the ultrasonic generator 202. Different metal materials and die-casting processes may require different vibration frequencies to achieve the best effect. By precisely adjusting the frequency, the operator can optimize the transmission effect of the vibration energy in the molten metal, improving the fluidity of the melt and the quality of the casting.

[0080] Adjustment of vibration magnitude and duration: In addition to frequency adjustment, the control component 3 may also have the function of adjusting the vibration amplitude (i.e., vibration intensity) and vibration duration. The adjustment of these parameters helps to further refine the transmission process of the vibration energy and meet the requirements of different die-casting processes.

[0081] In the above technical solution, precise vibration control helps to optimize the transmission effect of ultrasonic vibration in the molten metal, promotes the flow and mixing inside the melt, reduces dendrites, and improves the overall fluidity of the melt. Optimized vibration parameters help to refine metal grains, reduce the generation of defects such as shrinkage cavities and gas pores, thereby improving the density and mechanical properties of the casting. By precisely controlling the vibration parameters, unnecessary energy waste and overprocessing can be avoided, reducing energy consumption and production costs.

[0082] In some optional embodiments, the die-casting device 10 further includes a power supply. The power supply is connected to the ultrasonic generator 202, and the control component 3 is arranged between the power supply and the ultrasonic generator 202.

[0083] The power supply is the energy source of the ultrasonic generator 202, providing electrical energy for the ultrasonic vibrator. During the die-casting process, the stability and output capacity of the power supply directly affect the intensity and stability of the ultrasonic vibration.

[0084] An embodiment of the present application further provides a vehicle manufacturing device, which includes the die-casting device 10 in the above embodiment. The vehicle manufacturing device includes the die-casting device 10. A die-casting cavity 101 is provided in the die-casting mold 1 to provide a space for the molten metal to cool and solidify to form a casting. The die-casting cavity 101 has a specific shape and size, and the molten metal can flow along a predetermined path and fill the entire cavity after being injected, and finally form a casting with the required shape to obtain a casting with high manufacturing precision and structural strength. The ultrasonic component 2 is arranged inside the die-casting mold 1, so that ultrasonic energy can directly act on the molten metal just entering the die-casting cavity 101, improving the efficiency and effect of ultrasonic treatment. In particular, by arranging the ultrasonic output end 201 towards the die-casting inlet 102, ultrasonic energy can be concentrated and efficiently transmitted into the molten metal. It can break dendrites in the molten metal, improve the fluidity and filling property of the molten metal, make the die-casting process more stable, and thus improve the dimensional accuracy and shape accuracy of the casting.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A die-casting device, characterized in that, Comprising: A die-casting mold having a die-casting cavity for accommodating a molten metal, the die-casting cavity having a die-casting inlet through which the molten metal enters the die-casting cavity; At least one ultrasonic component disposed within the die-casting mold near the die-casting inlet, the ultrasonic component having an ultrasonic output end that faces the die-casting inlet to transmit ultrasonic energy generated by the ultrasonic component to the molten metal.

2. The die-casting device according to claim 1, characterized in that, The die-casting mold has a first die-casting mold and a second die-casting mold, and the die-casting cavity is formed between the first die-casting mold and the second die-casting mold. A receiving cavity is provided at a position of the first die-casting mold near the die-casting cavity for accommodating the ultrasonic component.

3. The die-casting device according to claim 2, characterized in that, The receiving cavity communicates with the die-casting inlet, and the end face of the ultrasonic output end facing the die-casting inlet does not exceed the surface of the first die-casting mold facing the second die-casting mold.

4. The die-casting device according to claim 3, characterized in that, The ultrasonic component includes: An ultrasonic generator; and A horn, one end of which is connected to the ultrasonic generator, and the other end of the horn is arranged facing the die-casting inlet, and the horn is used to transmit the ultrasonic energy into the die-casting cavity.

5. The die-casting device according to claim 4, characterized in that, Along the direction of the ultrasonic component facing the die-casting inlet, the cross-sectional area of the horn gradually decreases.

6. The die-casting device according to claim 4, characterized in that A groove is formed by concave inward on the surface of one end of the horn facing the ultrasonic generator, and a convex portion is formed by protruding outward on the surface of one end of the ultrasonic generator facing the horn. The groove and the convex portion cooperate to connect the horn and the ultrasonic generator.

7. The die-casting device according to claim 6, characterized in that, External threads are provided on the convex portion, and internal threads matching the external threads are provided on the inner wall of the groove.

8. The die-casting device according to any one of claims 4 to 7, characterized in that, The ultrasonic component includes two relatively arranged locking blocks, and a fixing cavity is formed between the two locking blocks for fixing the ultrasonic generator and the horn.

9. The die-casting device according to claim 8, characterized in that, Connecting holes are respectively provided on the two locking blocks, and the connecting holes are connected to the first die-casting mold through connecting bolts.

10. The die-casting device according to claim 8, characterized in that, At least one side surface of the locking block facing the horn protrudes to form a first convex portion, and the surface of the horn facing the locking block is concave to form a first concave portion. The first convex portion and the first concave portion cooperate to limit the movement of the horn relative to the locking block, and / or At least one side surface of the locking block facing the ultrasonic generator protrudes to form a second convex portion, and the surface of the ultrasonic generator facing the locking block is concave to form a second concave portion. The second convex portion and the second concave portion cooperate to limit the movement of the ultrasonic generator relative to the locking block.

11. The die-casting device according to claim 8, characterized in that The die-casting device further includes a control component for controlling the turning on, turning off, and ultrasonic generation frequency of the ultrasonic generator.

12. A vehicle manufacturing device, characterized in that, Including the die-casting device according to any one of claims 1-11.

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