Vacuum die casting mold

Abstract

This utility model relates to the field of mold manufacturing technology, specifically a vacuum die casting mold, comprising: a pressing component, a mold component, and an ejection component; the pressing component includes a fixed mold and a moving mold, the moving mold moving within the fixed mold to form a pressing cavity, the mold component being disposed within the pressing cavity, the fixed mold having an assembly groove near the pressing cavity, and the ejection component being disposed within the assembly groove; the ejection component is used to eject the mold after the pressing component has pressed the mold component; by the fixed mold and moving mold engaging within the pressing cavity, a closed die casting space is formed, ensuring the forming accuracy of the molten metal under high pressure and improving the density of the casting, while the assembly groove provides an integrated installation space for the ejection component, resulting in a compact structure and reduced mold space occupation; the ejection component features a separate design of an external drive end and an internal ejection end, facilitating equipment maintenance and debugging, ensuring accurate transmission of the demolding action, and demonstrating strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, specifically a vacuum die casting mold. Background Technology

[0002] Vacuum die casting is an advanced die casting process that eliminates or significantly reduces porosity and dissolved gases in die castings by removing gas from the die casting mold cavity during the die casting process, thereby improving the mechanical properties and surface quality of die castings. Because air is extracted from the vacuum die casting mold, the molten metal can be quickly filled into the mold under negative pressure, which allows the vacuum die casting mold to efficiently and quickly die cast metal parts.

[0003] Traditional stamping dies, when assembling appliance parts, have low assembly precision, making it difficult to control the quality of the stamped appliance parts. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a vacuum die-casting mold, which solves the problem that traditional stamping molds, when assembling and stamping home appliance parts, make it difficult to control the quality of the stamped home appliance parts due to low assembly precision.

[0005] The technical solution adopted by this utility model is as follows: it includes a pressing assembly, a mold assembly, and an ejection assembly; the pressing assembly includes a fixed mold and a moving mold, the moving mold opens and closes on the fixed mold to form a pressing cavity, the mold assembly is disposed in the pressing cavity, and pressing is performed by the fixed mold and the moving mold, the fixed mold is provided with an assembly groove on the side near the pressing cavity, and the ejection assembly is disposed in the groove; one end of the ejection assembly is disposed on the pressing assembly, and the other end is disposed on the mold assembly, the ejection assembly is used to lift and eject the mold after the pressing assembly has pressed the mold assembly.

[0006] A further improvement to the above scheme is that the fixed mold includes a first template and a second template, the second template is disposed on the first template, and the moving mold is disposed on the second template; baffles are provided on both sides of the first template, and an assembly plate is provided on the first template near the baffles; the assembly plate is evenly distributed with first air holes, and the assembly plate is arranged on the first template in cooperation with the baffles through the first air holes to form a vacuum assembly area.

[0007] A further improvement to the above solution is that the assembly plate is provided with an assembly terminal and an assembly positioning pin near the first air hole, and the assembly terminal and the assembly positioning pin are used for assembling the second template.

[0008] A further improvement to the above scheme is that the second template is provided with a second air hole relative to the first air hole, and the second template is provided with an assembly sleeve relative to the assembly positioning pin. The first air hole communicates with the second air hole, and the assembly positioning pin cooperates with the assembly sleeve.

[0009] A further improvement to the above solution is that the second template is provided with an ejection assembly groove near the ejection component, the ejection component is disposed on the ejection assembly groove, and the lower side of the second template near the ejection assembly groove is provided with a plug-in groove, which cooperates with the assembly terminal.

[0010] A further improvement to the above solution is that the moving mold includes an assembly cover and an assembly ejector pin disposed on the assembly cover. The assembly cover has an adsorption groove on the side near the assembly ejector pin, and the adsorption groove has a quick-change interface. The moving mold has mounting holes near the assembly cover, and there are multiple mounting holes, which are disposed around the assembly cover.

[0011] A further improvement to the above scheme is that the mold assembly includes an upper mold plate and a lower mold plate, the upper mold plate being close to the moving mold and the lower mold plate being close to the fixed mold, the moving mold and the fixed mold respectively driving the upper mold plate and the lower mold plate to perform pressing activities, and performing ejection activities through the ejection assembly.

[0012] A further improvement to the above scheme is that the outer periphery of the upper template and the lower template is provided with an adjustment element, one end of the adjustment element is connected to the adsorption groove disposed in the pressing cavity, and the adjustment element is used to adjust the tightness of the pressing assembly on the upper template and the lower template in the pressing cavity.

[0013] A further improvement to the above scheme is that a sealing strip is provided on the outer periphery of the control element near the pressing cavity, and the sealing strip is arranged in a ring around the pressing cavity.

[0014] A further improvement to the above solution is that the ejection assembly includes a driving end and an ejection end, one end of the driving end is connected to drive the ejection end; the driving end is externally disposed on the pressing assembly, and one end of the ejection end abuts against the mold assembly.

[0015] The beneficial effects of this utility model are: Compared to existing molds, this invention utilizes an openable pressing structure of a fixed mold and a moving mold, along with mold components within the pressing cavity, to form a closed die-casting space. This effectively ensures the forming accuracy of the molten metal under high pressure, improves the density of the casting, and provides an integrated installation space for the ejector assembly on the fixed mold side. This makes the overall structure more compact and reduces the space occupied by the mold. The separate design of the external drive end and the internal ejection end of the ejector assembly facilitates equipment maintenance and debugging while ensuring accurate transmission of the demolding action. After the pressing process is completed, the ejector assembly can quickly respond and perform the lifting operation, significantly shortening the production cycle compared to traditional manual demolding methods, making it highly practical. Attached Figure Description

[0016] Figure 1 This is a perspective view of the vacuum die-casting mold of this utility model; Figure 2 This is a front view of the vacuum die-casting mold of this utility model; Figure 3 for Figure 2 Sectional view at point AA; Figure 4 This is an exploded view of the vacuum die-casting mold of this utility model; Figure 5 This is an exploded view of the vacuum die-casting mold of this utility model from another angle.

[0017] Explanation of reference numerals in the attached drawings: Pressing assembly 10, fixed mold 11, moving mold 12, assembly cover 121, assembly ejector pin 122, adsorption groove 123, quick-change interface 124, mounting hole 125, pressing cavity 13, assembly groove 14, first template 15, baffle 151, assembly plate 152, first air hole 153, assembly terminal 154, assembly positioning pin 155, assembly sleeve 156, second template 16, second air hole 160, ejection assembly groove 161, insertion groove 162; Mold assembly 20, upper template 21, lower template 22, adjusting element 23, sealing strip 24; Ejector component 30, driver end 31, ejector end 32. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figures 1-5 As shown in the embodiment of this utility model, a vacuum die-casting mold includes: a pressing assembly 10, a mold assembly 20, and an ejection assembly 30; the pressing assembly 10 includes a fixed mold 11 and a moving mold 12, the moving mold 12 opening and closing on the fixed mold 11 to form a pressing cavity 13, the mold assembly 20 being disposed within the pressing cavity 13, and pressing is performed by the fixed mold 11 and the moving mold 12, the fixed mold 11 having an assembly groove 14 on one side near the pressing cavity 13, and the ejection assembly 30 being disposed at the assembly groove 14; one end of the ejection assembly 30 is externally disposed on the pressing assembly 10, and the other end is disposed on the mold assembly 20, the ejection assembly 30 being used to eject the mold after the pressing assembly 10 has pressed the mold assembly 20. In this embodiment, the opening and closing pressing structure of the fixed mold 11 and the moving mold 12, combined with the mold assembly 20 in the pressing cavity 13, forms a closed die-casting space, effectively ensuring the forming accuracy of the molten metal under high pressure and improving the density of the casting. The assembly groove 14 provided on the side of the fixed mold 11 provides an integrated installation space for the ejector assembly 30, making the overall structure layout more compact and reducing the space occupied by the mold. The external drive end 31 and the internal ejection end 32 of the ejector assembly 30 are designed separately, which facilitates equipment maintenance and debugging and ensures the accurate transmission of demolding action. After the pressing process is completed, the ejector assembly 30 can quickly respond and perform the lifting operation, which significantly shortens the production cycle compared with the traditional manual demolding method and is highly practical.

[0022] like Figures 4 to 5As shown, the fixed mold 11 includes a first template 15 and a second template 16. The second template 16 is disposed on the first template 15, and the moving mold 12 is disposed on the second template 16. Baffles 151 are provided on both sides of the first template 15. An assembly plate 152 is disposed on the first template 15 near the baffles 151. First air holes 153 are evenly distributed on the assembly plate 152. The assembly plate 152, through the first air holes 153, cooperates with the baffles 151 to surround the first template 15, forming a vacuum assembly area. In this embodiment, the combination design of the baffles 151 on both sides of the first template 15 and the assembly plate 152, along with the evenly distributed first air holes 153 on the assembly plate 152, forms a vacuum assembly area surrounding the first template 15. This allows for rapid removal of air during mold closing through vacuuming, effectively reducing defects such as porosity and shrinkage caused by residual gas during die casting, improving mold closing accuracy, and contributing to improved surface quality and dimensional stability of the casting.

[0023] Assembly plate 152 is provided with assembly terminals 154 and assembly positioning pins 155 near the first air hole 153. The assembly terminals 154 and assembly positioning pins 155 are used for assembling the second template 16. In this embodiment, by setting the assembly terminals 154 and assembly positioning pins 155 near the first air hole 153 on the assembly plate 152, the assembly accuracy and efficiency of the second template 16 are effectively improved. The assembly positioning pins 155 can provide a precise positioning reference for the second template 16, ensuring that it quickly aligns with the preset position during the assembly process and reducing assembly errors caused by positioning deviations. The assembly terminals 154 can realize a stable connection between the second template 16 and the assembly plate 152, enhancing the overall structural strength of the mold. This simplifies the assembly process of the second template 16, reduces the difficulty of manual operation, and ensures the relative positional accuracy of each component of the mold during vacuum die casting, which helps to improve the molding quality of the die-cast products. At the same time, it provides convenience for subsequent mold maintenance and disassembly.

[0024] The second template 16 is provided with a second vent 160 relative to the first vent 153, and an assembly sleeve 156 is provided with the second template 16 relative to the assembly positioning pin 155. The first vent 153 communicates with the second vent, and the assembly positioning pin 155 cooperates with the assembly sleeve 156. In this embodiment, by adding a second vent 160 to the second template 16 and communicating with the first vent 153, the vacuum path of the mold cavity is optimized, effectively improving the gas discharge efficiency in the cavity, reducing defects such as porosity and shrinkage caused by gas residue in the casting, and improving the forming quality of the die-casting part.

[0025] The second template 16 is provided with an ejection assembly groove 161 near the ejection assembly 30, and the ejection assembly 30 is disposed on the ejection assembly groove 161. A plug-in groove 162 is provided on the lower side of the second template 16 near the ejection assembly groove 161, and the plug-in groove 162 mates with the assembly terminal 154. In this embodiment, the ejection assembly groove 161 provided by the second template 16 provides a stable mounting base for the ejection assembly 30, ensuring accurate and reliable ejection action and effectively avoiding product deformation or mold damage caused by component displacement during ejection. The plug-in groove 162 on the lower side of the ejection assembly groove 161, which mates with the assembly terminal 154, enables rapid positioning and assembly of the template and the terminal, simplifies the mold assembly process, and improves assembly efficiency.

[0026] The moving mold 12 includes an assembly cover 121 and an assembly ejector pin 122 disposed on the assembly cover 121. An adsorption groove 123 is provided on the side of the assembly cover 121 near the assembly ejector pin 122, and a quick-change interface 124 is provided on the adsorption groove 123. Multiple mounting holes 125 are provided near the assembly cover 121, arranged around the perimeter of the assembly cover 121. In this embodiment, the coordinated arrangement of the assembly ejector pin 122 and the adsorption groove 123 enables stable adsorption and positioning of the workpiece during die casting. The quick-change interface 124 allows for rapid connection to a vacuum system, effectively improving the vacuum sealing of the mold and reducing porosity defects in the casting. The multiple mounting holes 125 around the assembly cover 121 enhance the connection stability between the moving mold 12 and other components, facilitating modular assembly and maintenance of the mold. The layout is compact and highly practical.

[0027] The mold assembly 20 includes an upper mold plate 21 and a lower mold plate 22. The upper mold plate 21 is close to the moving mold 12, and the lower mold plate 22 is close to the fixed mold 11. The moving mold 12 and the fixed mold 11 respectively drive the upper mold plate 21 and the lower mold plate 22 to perform pressing activities, and perform ejection activities through the ejection assembly 30. In this embodiment, the corresponding arrangement of the upper mold plate 21 with the moving mold 12 and the lower mold plate 22 with the fixed mold 11 realizes the precise transmission of the mold opening and closing action. When the moving mold 12 and the fixed mold 11 drive the mold plate 12 to press, the sealing of the cavity closure can be ensured, which is conducive to improving the stability of the vacuum environment during the die casting process and reducing the porosity defects of the casting. Through the linkage between the mold plate and the mold body, the continuity of the die casting process is optimized, which not only ensures the mold closing accuracy but also improves the demolding efficiency, which helps to improve the casting forming quality and production stability.

[0028] Adjustment elements 23 are provided on the outer periphery of the upper template 21 and the lower template 22. One end of the adjustment element 23 is connected to the adsorption groove 123 and disposed within the pressing cavity 13. The adjustment element 23 is used to adjust the tightness of the pressing assembly 10 on the upper template 21 and the lower template 22 within the pressing cavity 13. In this embodiment, by setting the adjustment element 23 on the outer periphery of the upper template 21 and the lower template 22, precise control of the tightness of the pressing assembly 10 is achieved. One end of the adjustment element 23 is connected to the adsorption groove 123 and is embedded within the pressing cavity 13. The template bonding force can be dynamically adjusted according to the die-casting process requirements, effectively improving the mold closing accuracy and stability. By optimizing the pressing tightness, mold damage caused by excessive pressure can be avoided, and die-casting defects caused by insufficient pressure can be prevented, significantly improving the casting quality.

[0029] A sealing strip 24 is provided on the outer periphery of the control element 23 near the pressing cavity 13, and the sealing strip 24 is arranged in a ring around the pressing cavity 13. In this embodiment, by the sealing strip 24 being arranged in a ring around the outer periphery of the pressing cavity 13, the sealing performance between the control element 23 and the pressing cavity 13 can be effectively enhanced, preventing external air from seeping in or internal pressure from leaking during vacuum die casting, and ensuring that the pressing cavity 13 maintains a stable vacuum environment.

[0030] The ejection assembly 30 includes a drive end 31 and an ejection end 32. One end of the drive end 31 is connected to drive the ejection end 32. The drive end 31 is externally mounted on the pressing assembly 10, and one end of the ejection end 32 abuts against the mold assembly 20. In this embodiment, the efficient ejection function of the mold assembly 20 is achieved through the coordinated design of the drive end 31 and the ejection end 32. The drive end 31 serves as the core of power output, with one end directly connected to and driving the ejection end 32, ensuring the stability and timeliness of power transmission. At the same time, externally mounting the drive end 31 on the pressing assembly 10 optimizes the internal space layout of the mold and facilitates later maintenance and debugging.

[0031] A vacuum die-casting mold includes: a pressing assembly 10, a mold assembly 20, and an ejection assembly 30; the pressing assembly 10 includes a fixed mold 11 and a movable mold 12, the movable mold 12 opening and closing on the fixed mold 11 to form a pressing cavity 13, the mold assembly 20 being disposed within the pressing cavity 13, and pressing is performed by the fixed mold 11 and the movable mold 12; the fixed mold 11 is provided with an assembly groove 14 on the side near the pressing cavity 13, and the ejection assembly 30 is disposed at the groove; one end of the ejection assembly 30 is externally disposed on the pressing assembly 10, and the other end is disposed on the mold assembly 20, the ejection assembly 30 being used to eject the mold after the pressing assembly 10 has pressed the mold assembly 20. In this embodiment, the opening and closing pressing structure of the fixed mold 11 and the moving mold 12, combined with the mold assembly 20 in the pressing cavity 13, forms a closed die-casting space, effectively ensuring the forming accuracy of the molten metal under high pressure and improving the density of the casting. The assembly groove 14 provided on the side of the fixed mold 11 provides an integrated installation space for the ejector assembly 30, making the overall structure layout more compact and reducing the space occupied by the mold. The external drive end 31 and the internal ejection end 32 of the ejector assembly 30 are designed separately, which facilitates equipment maintenance and debugging and ensures the accurate transmission of demolding action. After the pressing process is completed, the ejector assembly 30 can quickly respond and perform the lifting operation, which significantly shortens the production cycle compared with the traditional manual demolding method and is highly practical.

[0032] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vacuum die casting mold characterized by, include: Pressing components, mold components, and ejection components; The pressing assembly includes a fixed mold and a moving mold. The moving mold opens and closes on the fixed mold to form a pressing cavity. The mold assembly is disposed in the pressing cavity. Pressing is performed by the fixed mold and the moving mold. The fixed mold has an assembly groove on one side near the pressing cavity. The ejector assembly is disposed in the groove. One end of the ejector assembly is externally disposed on the pressing assembly, and the other end is disposed on the mold assembly. The ejector assembly is used to eject the mold assembly after the pressing assembly has pressed the mold assembly.

2. The vacuum die-casting mold according to claim 1, characterized in that: The fixed mold includes a first template and a second template. The second template is disposed on the first template, and the moving mold is disposed on the second template. Baffles are provided on both sides of the first template. An assembly plate is provided on the first template near the baffles. The assembly plate is evenly distributed with first air holes. The assembly plate is arranged on the first template in cooperation with the baffles through the first air holes to form a vacuum assembly area.

3. The vacuum die-casting mold according to claim 2, characterized in that: The assembly plate is provided with an assembly terminal and an assembly positioning pin near the first air hole. The assembly terminal and the assembly positioning pin are used for assembling the second template.

4. The vacuum die-casting mold according to claim 3, characterized in that: The second template has a second air hole relative to the first air hole, and the second template has an assembly sleeve relative to the assembly positioning pin. The first air hole communicates with the second air hole, and the assembly positioning pin cooperates with the assembly sleeve.

5. The vacuum die-casting mold according to claim 4, characterized in that: The second template is provided with an ejection assembly groove near the ejection component, the ejection component is disposed on the ejection assembly groove, and the second template is provided with a plug-in groove on the lower side near the ejection assembly groove, the plug-in groove cooperating with the assembly terminal.

6. The vacuum die-casting mold according to claim 1, characterized in that: The moving mold includes an assembly cover and an assembly ejector pin disposed on the assembly cover. The assembly cover has an adsorption groove on the side near the assembly ejector pin, and the adsorption groove has a quick-change interface. The moving mold has mounting holes near the assembly cover, and there are multiple mounting holes arranged around the assembly cover.

7. The vacuum die-casting mold according to claim 6, characterized in that: The mold assembly includes an upper mold plate and a lower mold plate. The upper mold plate is close to the moving mold, and the lower mold plate is close to the fixed mold. The moving mold and the fixed mold respectively drive the upper mold plate and the lower mold plate to perform pressing activities, and perform ejection activities through the ejection assembly.

8. The vacuum die-casting mold according to claim 7, characterized in that: The upper template and the lower template are provided with adjustment elements on their outer periphery. One end of the adjustment element is connected to the adsorption groove and disposed in the pressing cavity. The adjustment element is used to adjust the tightness of the pressing assembly on the upper template and the lower template in the pressing cavity.

9. The vacuum die-casting mold according to claim 8, characterized in that: The control element is provided with a sealing strip near the outer periphery of the pressing cavity, and the sealing strip is arranged in a ring around the pressing cavity.

10. The vacuum die-casting mold according to claim 1, characterized in that: The ejection assembly includes a driving end and an ejection end, one end of the driving end is connected to drive the ejection end; the driving end is externally disposed on the pressing assembly, and one end of the ejection end abuts against the mold assembly.

Images