A rapid demolding die casting mold ejector pin assembly

Abstract

The utility model relates to a die -casting die ejector pin assembly of quick stripping, including fixed die assembly and in fixed die assembly processing surface one side's movable die assembly, and the fixed die assembly and movable die assembly form have formed cavity, still include: ejector pin assembly, along movable die assembly's stripping direction, slide and install in movable die assembly, for make in the product of formed cavity separates, linkage assembly sets up between ejector pin assembly and movable die assembly. Linkage assembly sets up between ejector pin assembly and movable die assembly, when movable die assembly removes in the working process of die -casting die to the direction away from fixed die assembly, linkage assembly will be triggered work, linkage assembly can in time with movable die assembly's movement transmission gives ejector pin assembly, and controls ejector pin assembly to remove movable die assembly's direction to the formed cavity, can in movable die assembly stripping removal moves the first time, synchronous start ejector pin assembly towards the action of product direction, has greatly reduced the waiting time in stripping process, realized quick stripping.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to a die casting mold ejector pin assembly for quick demolding. Background Technology

[0002] In the die casting process, the ejector pin assembly of the die casting mold is crucial for the smooth demolding of the die casting parts. As one of the key components of the die casting mold, the performance of the ejector pin assembly directly affects production efficiency, product quality, and mold lifespan.

[0003] Currently, traditional die-casting mold ejector pin assemblies suffer from slow demolding speed. In conventional die-casting production processes, the ejection and return actions of the ejector pins are often not fast or efficient enough. The time required for ejector pin demolding accounts for a certain proportion of the die-casting cycle, resulting in limited production efficiency. This is especially true for projects with large production batches and high production speed requirements, where the longer demolding time affects overall output and increases production costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a die casting mold ejector pin assembly for rapid demolding, which solves the technical problem of slow demolding speed in the current traditional die casting mold ejector pin assemblies.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model provides a die-casting mold ejector pin assembly for rapid demolding.

[0009] This utility model provides a quick-release die-casting mold ejector assembly, including a fixed mold assembly and a movable mold assembly on one side of the machined surface of the fixed mold assembly. A molding cavity is formed between the fixed mold assembly and the movable mold assembly. The assembly also includes:

[0010] Ejector pin assembly, which is slidably mounted on the moving mold assembly along the demolding direction of the moving mold assembly, is used to detach the product in the molding cavity;

[0011] The linkage component is located between the ejector pin assembly and the moving mold assembly;

[0012] Specifically, when the moving mold assembly moves away from the fixed mold assembly, the linkage assembly controls the ejector pin assembly to move towards the molding cavity.

[0013] Optionally, the ejector pin assembly includes:

[0014] The ejector pin body is located on the side of the moving mold assembly away from the molding cavity;

[0015] The ejector pin is fixedly mounted on the ejector pin body and slidably mounted inside the moving mold assembly.

[0016] Optionally, the ejector pin assembly also includes:

[0017] An auxiliary plate is located on the side of the moving mold assembly away from the molding cavity, and the auxiliary plate is fixedly connected to the ejector pin body. The linkage assembly is located between the auxiliary plates.

[0018] Optionally, the linkage components include:

[0019] The rotating rod is rotatably mounted between the auxiliary plate and the moving mold assembly, and the hinge point of the rotating rod is fixed relative to the auxiliary plate and the moving mold assembly;

[0020] The driven rods are rotatably mounted at both ends of the rotating rod, with the end furthest from the rotating rod hinged to the auxiliary plate and the moving mold assembly, respectively.

[0021] Optionally, the adjusting rod is detachably mounted between the auxiliary plate and the ejector pin body.

[0022] Optionally, it also includes:

[0023] The telescopic rod is positioned between the auxiliary plate and the moving mold assembly.

[0024] Optionally, it also includes:

[0025] An elastic element, disposed between the auxiliary plate and the moving mold assembly, is used to move the auxiliary plate and the moving mold assembly in a direction away from each other.

[0026] Optionally, it also includes:

[0027] The guide post is fixedly installed on the fixed mold assembly and slides through the moving mold assembly.

[0028] Optionally, there are at least two sets of linkage components, which are arranged opposite to each other between the ejector pin assembly and the moving mold assembly.

[0029] (III) Beneficial Effects

[0030] The beneficial effects of this utility model are as follows: The ejector pin assembly for a die-casting mold with rapid demolding includes a fixed mold assembly, a moving mold assembly, an ejector pin assembly, and a linkage assembly. The linkage assembly is located between the ejector pin assembly and the moving mold assembly. During the operation of the die-casting mold, when the moving mold assembly moves away from the fixed mold assembly, the linkage assembly is triggered. The linkage assembly can promptly transmit the movement of the moving mold assembly to the ejector pin assembly and control the ejector pin assembly to move towards the molding cavity. It can simultaneously start the ejector pin assembly to move towards the product at the first moment of the moving mold assembly's demolding movement, greatly reducing the waiting time during the demolding process and achieving rapid demolding. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the quick-release die-casting mold ejector pin assembly of this utility model;

[0032] Figure 2 This is a three-dimensional cross-sectional structural diagram of the quick-release die-casting mold ejector pin assembly of this utility model;

[0033] Figure 3 This is a three-dimensional structural diagram of the ejector pin body of this utility model;

[0034] Figure 4 This is a three-dimensional structural diagram of the linkage component of this utility model.

[0035] [Explanation of Labels in the Attached Image]

[0036] 100-Fixed mold assembly, 200-Moving mold assembly, 300-Ejector pin assembly, 400-Linkage assembly, 500-Telescopic rod, 600-Elastic element, 700-Guide post;

[0037] 310 - Ejector body, 320 - Ejector, 330 - Auxiliary plate, 340 - Adjusting rod;

[0038] 410 - Rotating rod, 420 - Driven rod;

[0039] 101 - Molding cavity. Detailed Implementation

[0040] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0041] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0042] like Figures 1 to 4 As shown, this embodiment proposes a quick-release die-casting mold ejector assembly, including a fixed mold assembly 100 and a movable mold assembly 200 on one side of the machined surface of the fixed mold assembly 100. A molding cavity 101 is formed between the fixed mold assembly 100 and the movable mold assembly 200. The assembly also includes: an ejector assembly 300, which is slidably mounted on the movable mold assembly 200 along the demolding direction of the movable mold assembly 200, for releasing the product in the molding cavity 101; and a linkage assembly 400, which is disposed between the ejector assembly 300 and the movable mold assembly 200. When the movable mold assembly 200 moves away from the fixed mold assembly 100, the linkage assembly 400 controls the ejector assembly 300 to move towards the molding cavity 101.

[0043] This application provides a quick-release die-casting mold ejector assembly, which includes a fixed mold assembly 100, a moving mold assembly 200, an ejector assembly 300, and a linkage assembly 400. The ejector assembly 300 is slidably mounted on the moving mold assembly 200 along the demolding direction of the moving mold assembly 200, and is used to release the product in the molding cavity 101. After the die-casting process is completed, the product is cooled and formed in the molding cavity. At this time, the ejector assembly 300 applies a pushing force to the product through its own action, overcoming the adsorption force and friction between the product and the mold, and realizing the separation of the product from the mold. The linkage component 400 is located between the ejector pin assembly 300 and the moving mold assembly 200. During the operation of the die-casting mold, when the moving mold assembly 200 moves away from the fixed mold assembly 100 (that is, when the demolding action begins), the linkage component 400 is triggered to work. The linkage component 400 can transmit the movement of the moving mold assembly 200 to the ejector pin assembly 300 in a timely manner and control the ejector pin assembly 300 to move towards the molding cavity 101. It can simultaneously start the action of the ejector pin assembly 300 towards the product at the first moment of the demolding movement of the moving mold assembly 200, which greatly reduces the waiting time in the demolding process and achieves rapid demolding.

[0044] Compared to traditional die-casting mold ejector assembly, this technical solution introduces a linkage component 400, achieving integrated and coordinated action between the moving mold assembly 200 and the ejector assembly 300. In traditional technologies, the action of the ejector assembly often relies on an independent drive device or requires additional control logic and operating steps to trigger, resulting in a long time interval between the start of demolding from the moving mold and the actual pushing of the product by the ejector, affecting the demolding speed. The linkage design of this solution ensures that the action of the ejector assembly is closely linked to and synchronized with the demolding action of the moving mold assembly, effectively shortening the time required for the entire demolding process and thus improving production efficiency.

[0045] In practical production applications, such as mass production of small precision die-cast products, the slow demolding speed of traditional ejector pin assemblies can lead to a significant time spent on demolding for each product. This technical solution, however, utilizes a rapid demolding function, enabling the production of more products per unit time and generating greater economic benefits. Simultaneously, rapid demolding helps reduce the time products spend in the mold, mitigating quality issues such as deformation and cracking caused by uneven cooling and shrinkage, thus improving overall product quality and production efficiency.

[0046] like Figures 1 to 3 As shown, in some embodiments, the ejector assembly 300 includes: an ejector body 310 disposed on the side of the moving mold assembly 200 away from the molding cavity 101; an ejector 320 fixedly mounted on the ejector body 310 and slidably mounted within the moving mold assembly 200; an auxiliary plate 330 disposed on the side of the moving mold assembly 200 away from the molding cavity 101, and the auxiliary plate 330 fixedly connected to the ejector body 310; and a linkage assembly 400 disposed between the auxiliary plates 330.

[0047] In this technical solution, the ejector pin body 310 is located on the side of the moving mold assembly 200 away from the molding cavity 101. It is the core support structure of the ejector pin assembly 300, serving to integrate and support other components. The ejector pin 320 is fixedly mounted on the ejector pin body 310. During operation, the ejector pin 320 moves in tandem with the ejector pin body 310 and is stably stressed. Simultaneously, the ejector pin 320 is slidably mounted within the moving mold assembly 200, allowing for precise linear movement within the guide path provided by the moving mold assembly 200. This ensures accurate application of thrust to the product within the molding cavity 101 during demolding, smoothly ejecting the product from the mold. The auxiliary plate 330 is located on the side of the moving mold assembly 200 away from the molding cavity 101 and is fixedly connected to the ejector pin body 310. When the linkage assembly 400 operates, it can effectively transmit power to the ejector pin body 310 by acting on the auxiliary plate 330, thereby driving the ejector pin 320 to move and achieve rapid demolding.

[0048] The linkage component 400 is located between the auxiliary plate 330 and the moving mold component 200. When the moving mold component 200 starts to move away from the fixed mold component 100 (i.e., the demolding action begins), the linkage component 400 transmits the power generated by the movement of the moving mold component 200 to the auxiliary plate 330, and then to the ejector body 310 through the auxiliary plate 330, which ultimately drives the ejector 320 to move rapidly towards the molding cavity 101, thereby realizing the synchronous action and rapid demolding function of the ejector component 300.

[0049] like Figure 1 , Figure 2 and Figure 4 As shown, in some examples, the linkage component 400 includes: a rotating rod 410, rotatably mounted between the auxiliary plate 330 and the moving mold assembly 200, wherein the hinge point of the rotating rod 410 is fixed relative to the auxiliary plate 330 and the moving mold assembly 200; and a driven rod 420, rotatably mounted at both ends of the rotating rod 410, wherein the end away from the rotating rod 410 is hinged to the auxiliary plate 330 and the moving mold assembly 200 respectively.

[0050] In this technical solution, the rotating rod 410 is rotatably mounted between the auxiliary plate 330 and the moving mold assembly 200, and its hinge point is fixed relative to the auxiliary plate 330 and the moving mold assembly 200. The rotating rod 410 can rotate around the fixed hinge point as the center. For example, its hinge point can be fixedly set on the bearing housing or a horizontal surface. The driven rods 420 are rotatably mounted at both ends of the rotating rod 410. The driven rods 420 can make corresponding swinging movements as the rotating rod 410 rotates, and the ends of the driven rods 420 away from the rotating rod 410 are hinged to the auxiliary plate 330 and the moving mold assembly 200 respectively.

[0051] When the moving mold assembly 200 operates, it drives one end of the driven rod 420, which is hinged to it, to move. Since the driven rod 420 is rotatably mounted at the end of the rotating rod 410, the movement of the driven rod 420 causes the rotating rod 410 to rotate around its fixed hinge point. After the rotating rod 410 rotates, it drives the other end of the driven rod 420 to swing. The other end of this driven rod 420 is hinged to the auxiliary plate 330, thereby transmitting the movement of the moving mold assembly 200 to the auxiliary plate 330, and then to the ejector body 310 and ejector 320, which are fixedly connected to the auxiliary plate 330. Through the cooperation of the rotating rod 410 and the driven rod 420, the linear motion of the moving mold assembly 200 is transformed into the indirect "push" and "pull" motion of the auxiliary plate 330.

[0052] In some instances, the adjusting rod 340 is detachably mounted between the auxiliary plate 330 and the ejector pin body 310.

[0053] In this technical solution, the adjusting rod 300 is detachably installed between the auxiliary plate 330 and the ejector pin body 310. During mold production and use, the die-casting process may require appropriate adjustments due to product design changes, increased production efficiency requirements, or machine wear. If the adjusting rod 300 is fixedly connected to the auxiliary plate 330 and the ejector pin body 310, then when modifications to the internal structure are needed, it is often necessary to replace the entire large component, which is complex and costly. The detachable installation method allows operators to flexibly disassemble and install the adjusting rod 300 according to the actual situation, making it easier to adjust certain performance parameters of the ejector pin assembly when switching production between different products.

[0054] like Figure 1 and Figure 2 As shown, in some instances, the quick-release die-casting mold ejector assembly further includes a telescopic rod 500 disposed between the auxiliary plate 330 and the moving mold assembly 200.

[0055] In this technical solution, the telescopic rod 500 is positioned between the auxiliary plate 330 and the moving mold assembly 200. The function of the telescopic rod 500 is that it can extend and retract, supplementing or adjusting the movement of the auxiliary plate 330 in the linear direction. When certain deviations occur in the power transmission process of the linkage assembly 400 or when more precise ejector pin movement control is required, the telescopic rod 500 can extend and retract in a timely manner to correct the movement direction of the auxiliary plate 330, making the movement of the entire ejector pin assembly more accurate and smooth during the rapid demolding process.

[0056] During the die casting process, the mold will be subjected to a large amount of pressure and vibration. During the extension and retraction of the telescopic rod 500, it can maintain a relatively stable distance and positional relationship between the auxiliary plate 330 and the moving mold assembly 200, preventing the relative position between the two from shifting significantly due to excessive pressure or vibration, which would affect the normal operation of the ejector pin assembly.

[0057] like Figure 1 and Figure 2 As shown, in some instances, the quick-release die-casting mold ejector assembly further includes an elastic element 600 disposed between the auxiliary plate 330 and the moving mold assembly 200, for moving the auxiliary plate 330 and the moving mold assembly 200 in a direction away from each other.

[0058] In this technical solution, the elastic element 600 is located between the auxiliary plate 330 and the moving mold assembly 200. The auxiliary plate 330 is connected to the ejector pin body 310. The core function of the elastic element 600 is to give the auxiliary plate 330 and the moving mold assembly 200 a tendency to move away from each other. During the working cycle of the die-casting mold, when the moving mold assembly 200 approaches the fixed mold assembly 100 for die-casting, the elastic element 600 is stretched, storing elastic potential energy. Once die-casting is completed, the moving mold assembly 200 begins to move away from the fixed mold assembly 100. At this time, the stretched elastic element 600 releases its elastic potential energy, pushing the auxiliary plate 330 and the moving mold assembly 200 away from each other.

[0059] For example, the elastic element 600 may be, but is not limited to, a tension spring.

[0060] like Figure 1 As shown, in some examples, the quick-release die-casting mold ejector assembly further includes a guide post 700, which is fixedly installed on the fixed mold assembly 100 and slides through the moving mold assembly 200.

[0061] In this technical solution, the guide post 700 is fixedly installed on the fixed mold assembly 100. The fixed mold assembly 100 is a relatively stationary part in the entire die-casting mold, providing a stable foundation. The guide post 700 relies on this foundation to ensure its own positional stability. Simultaneously, the guide post 700 slides through the moving mold assembly 200. During the operation of the die-casting mold, the guide post 700 guides the movement of the moving mold assembly 200. As a sliding through component, the guide post 700 provides a precise track for the sliding of the moving mold assembly 200. When the moving mold assembly 200 moves closer to or away from the fixed mold assembly 100, it can only slide along the axis of the guide post 700. This effectively restricts the degree of freedom of movement of the moving mold assembly 200, ensuring its accuracy and stability. During the die-casting process, the moving mold assembly 200 needs to precisely approach the fixed mold assembly 100 to complete the mold-closing action. The guide post 700 ensures that the moving mold assembly 200 can accurately reach the mold-closing position.

[0062] like Figure 1 As shown, in some instances, there are at least two sets of linkage components 400, which are arranged opposite to each other between the ejector pin assembly 300 and the moving mold assembly 200.

[0063] In this technical solution, two sets of linkage components 400 are arranged opposite to each other between the ejector pin assembly 300 and the moving mold assembly 200, which can ensure the smooth movement of the ejector pin assembly 300 and the moving mold assembly 200 relative to each other and improve work efficiency.

[0064] For example, the ejector pin 320 of this technical solution has relatively precise dimensional and surface accuracy requirements. Through lathe machining, the metal blank is gradually processed into an ejector pin shape with a specific diameter, length, and surface finish. The lathe performs a planar turning operation on the blank of the auxiliary plate 330, providing a flat foundation for subsequent machining and assembly. By performing surface work hardening treatment on the components through lathe, the wear resistance and service life of key components of the ejector pin assembly are improved. For ejector pins and guide components that bear large friction and pressure, special machining treatment on the lathe can improve their surface hardness and mechanical properties, thereby ensuring the stable performance of the ejector pin assembly during long-term use and reducing the probability of failure.

[0065] Drilling tools also play an important role in the component processing of ejector pin assemblies in die casting molds. Firstly, in terms of ejector pin hole processing, drilling tools can drill precise ejector pin holes, and their processing accuracy is crucial for the smooth movement of ejector pin 320.

[0066] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0067] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0068] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A quick-release die-casting mold ejector assembly, comprising a fixed mold assembly (100) and a movable mold assembly (200) on one side of the machined surface of the fixed mold assembly (100), wherein a molding cavity (101) is formed between the fixed mold assembly (100) and the movable mold assembly (200), characterized in that, Also includes: Ejector assembly (300) is slidably mounted on the moving mold assembly (200) along the demolding direction of the moving mold assembly (200) to disengage the product in the molding cavity (101); A linkage component (400) is disposed between the ejector pin assembly (300) and the moving mold assembly (200); When the moving mold assembly (200) moves away from the fixed mold assembly (100), the linkage assembly (400) controls the ejector assembly (300) to move towards the molding cavity (101).

2. The quick-release die-casting mold ejector pin assembly as described in claim 1, characterized in that, The ejector pin assembly (300) includes: The ejector pin body (310) is located on the side of the moving mold assembly (200) away from the molding cavity (101); The ejector pin (320) is fixedly installed on the ejector pin body (310) and slidably installed in the moving mold assembly (200).

3. The quick-release die-casting mold ejector pin assembly as described in claim 2, characterized in that, The ejector pin assembly (300) also includes: An auxiliary plate (330) is disposed on the side of the moving mold assembly (200) away from the molding cavity (101), and the auxiliary plate (330) is fixedly connected to the ejector body (310). The linkage assembly (400) is disposed between the auxiliary plate (330) and the auxiliary plate (330).

4. The quick-release die-casting mold ejector pin assembly as described in claim 3, characterized in that, The linkage component (400) includes: A rotating rod (410) is rotatably mounted between the auxiliary plate (330) and the moving mold assembly (200), and the hinge point of the rotating rod (410) is fixed relative to the auxiliary plate (330) and the moving mold assembly (200); The driven rod (420) is rotatably mounted at both ends of the rotating rod (410), and the end away from the rotating rod (410) is hinged to the auxiliary plate (330) and the moving mold assembly (200).

5. The quick-release die-casting mold ejector pin assembly as described in claim 3, characterized in that: An adjusting rod (340) is detachably installed between the auxiliary plate (330) and the ejector body (310).

6. The quick-release die-casting mold ejector pin assembly as described in claim 3, characterized in that, Also includes: A telescopic rod (500) is disposed between the auxiliary plate (330) and the moving mold assembly (200).

7. The quick-release die-casting mold ejector pin assembly as described in claim 3, characterized in that, Also includes: An elastic element (600) is disposed between the auxiliary plate (330) and the moving mold assembly (200) for moving the auxiliary plate (330) and the moving mold assembly (200) in a direction away from each other.

8. The quick-release die-casting mold ejector pin assembly as described in claim 1, characterized in that, Also includes: The guide post (700) is fixedly installed on the fixed mold assembly (100), and the guide post (700) slides through the moving mold assembly (200).

9. The quick-release die-casting mold ejector pin assembly as described in claim 4, characterized in that: There are at least two sets of linkage components (400), which are arranged opposite to each other between the ejector pin assembly (300) and the moving mold assembly (200).

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