Die-casting forming die for arc-shaped hardware cover

Abstract

The arc-shaped hardware cover die-casting forming die comprises an upper die and a lower die, the upper die comprises an upper die plate, two upper die cavities are formed in the bottom of the upper die plate, the upper die cavities are in an arc groove shape, the lower die comprises a lower die plate, a lower die core is arranged on the upper surface of the lower die plate, the lower die core corresponds to the upper die cavities, the lower die core is in a circular truncated cone shape, and the lower die plate is arranged on the lower surface of the lower die plate. A main runner is arranged on one side of the upper surface of the lower mold plate, a flow dividing protruding block is arranged on the main runner and divides the main runner into two sub-runners, one sub-runner corresponds to one lower mold core, the other sub-runner corresponds to the other lower mold core, and the sub-runners are in a plate arc shape and surround the outer sides of the lower mold cores. The sub-runner is connected with the lower mold core through a plurality of sub-flow ports, and a plurality of overflow grooves surround the outer side of the lower mold core. According to the die-casting forming die for the arc-shaped hardware cover, high-quality and high-efficiency production of the arc-shaped hardware cover is realized through an innovative runner design, an accurate forming cavity structure and an efficient overflow control system.

Description

Technical Field

[0001] In the field of die-casting molds for hardware parts, this invention specifically relates to a die-casting mold for an arc-shaped hardware cover. Background Technology

[0002] In the hardware manufacturing industry, curved hardware covers are a common component widely used in various electronic devices, home appliances, and automotive parts. Traditional production methods for curved hardware covers often involve a combination of stamping and bending processes. These methods are not only inefficient but also struggle to guarantee product consistency and precision. This is especially true for curved hardware covers with complex curved surface structures, where the manufacturing difficulty and cost increase significantly.

[0003] With the continuous advancement of mold technology, die casting has gradually become the mainstream method for producing curved hardware covers due to its ability to complete the molding of complex-shaped parts in one go, and the high dimensional accuracy and good surface quality of the products. However, existing die casting molds still have some shortcomings in design, especially when dealing with curved structures, often facing problems such as complex mold structure, uneven metal flow control, long molding cycle, and high mold maintenance costs.

[0004] Specifically, the upper and lower mold designs of traditional curved hardware cap die-casting molds often fail to effectively optimize the filling path of the molten metal, resulting in uneven flow of the molten metal within the mold cavity. This easily leads to defects such as incomplete filling, porosity, and shrinkage cavities, affecting product quality and performance. Furthermore, an unreasonable design of the main runner in the mold often causes uneven distribution of molten metal pressure, further exacerbating the difficulty of quality control during the molding process. Utility Model Content

[0005] The purpose of this application is to provide a die-casting mold for an arc-shaped hardware cap. The mold should be able to effectively guide the flow of molten metal, ensure that the molten metal is evenly filled into each cavity, and have a good overflow control mechanism to improve the molding quality of the product, reduce production costs, and increase production efficiency.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A die-casting mold for an arc-shaped hardware cover includes an upper mold and a lower mold. The upper mold includes an upper template with two upper mold cavities at its bottom. Each upper mold cavity is an arc-shaped groove. The lower mold includes a lower template with a lower mold core on its upper surface. The lower mold core corresponds to the upper mold cavity and is shaped like a frustum. A main channel is provided on one side of the upper surface of the lower template. A diversion protrusion is provided on the main channel, dividing the main channel into two diversion channels. One diversion channel corresponds to one lower mold core, and the other diversion channel corresponds to the other lower mold core. The diversion channels are arc-shaped and surround the outer side of the lower mold core. The diversion channels are connected to the lower mold core through multiple diversion ports. Multiple overflow grooves surround the outer side of the lower mold core.

[0008] In one embodiment, the upper mold cavity is surrounded by multiple upper mold forming ejector pins, and the upper mold forming ejector post is provided in the middle of the upper mold cavity.

[0009] In one embodiment, the lower mold core is provided with a plurality of ejector holes.

[0010] In one embodiment, limiting protrusions are provided at the four corners of the lower template core, and limiting grooves are provided on the upper template corresponding to the limiting protrusions.

[0011] In one embodiment, a first cooling water channel is provided within the upper template.

[0012] In one embodiment, a second cooling water channel is provided within the lower template.

[0013] The beneficial effects of this application are:

[0014] In this application's mold, the main runner is cleverly divided into two branch runners by a diversion protrusion. These branch runners are designed in a circular arc shape, tightly surrounding the outer side of the lower mold core. This design not only ensures a smooth transition of the molten metal from the main runner to the branch runners but also effectively guides the molten metal to flow evenly to each lower mold core, avoiding defects such as incomplete filling and porosity caused by uneven molten metal flow in traditional molds. This significantly improves the molding quality and consistency of the product. Furthermore, the multiple overflow grooves surrounding the outer side of the lower mold core effectively collect excess molten metal, balancing the pressure distribution inside the mold. This design not only prevents overflow problems caused by excessive molten metal but also further enhances the surface quality and overall performance of the product by precisely controlling the molten metal flow rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a die-casting mold for an arc-shaped hardware cover provided in one embodiment of this application;

[0016] Figure 2A schematic diagram of the upper mold of a die-casting mold for an arc-shaped hardware cover provided in an embodiment of this application;

[0017] Figure 3 A schematic diagram of the lower mold of a die-casting mold for an arc-shaped hardware cover provided in an embodiment of this application; Detailed Implementation

[0018] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0019] Example 1

[0020] like Figures 1 to 3 As shown, this embodiment provides a die-casting mold for an arc-shaped hardware cover, which mainly consists of an upper mold 1 and a lower mold 2.

[0021] Upper mold structure: The upper mold 1 includes an upper template 11. The bottom of the upper template 11 is carefully provided with two upper mold cavities 12. Both upper mold cavities 12 are arc-shaped grooves, and their shape and size are perfectly matched to the upper surface contour of the arc-shaped hardware cover to be formed.

[0022] Lower mold structure: The lower mold 2 includes a lower template 21. Two lower mold cores 22 are installed on the upper surface of the lower template 21. Each lower mold core 22 corresponds to the corresponding upper mold cavity 12. The shape of the lower mold core 22 is designed as a frustum to ensure that it can fit tightly with the upper mold cavity 12 when the mold is closed, forming a complete arc-shaped hardware cover forming space.

[0023] Runner Design: A main runner 23 is provided on one side of the upper surface of the lower mold plate 21 to guide the molten metal into the mold. A cleverly designed diversion bump 24 divides the main runner 23 into two independent runners 25. Each runner 25 is arc-shaped, tightly surrounding the outside of a lower mold core 22, and connected to the lower mold core 22 through multiple carefully designed diversion ports 26. This design ensures that the molten metal flows evenly and smoothly into each lower mold core 22, avoiding molding defects caused by uneven molten metal flow.

[0024] Overflow groove design: To further control the flow of molten metal and prevent overflow caused by excessive molten metal, multiple overflow grooves 27 are arranged around the outside of the lower mold core 22. These overflow grooves 27 can effectively collect excess molten metal and balance the pressure distribution inside the mold, thereby ensuring the forming quality and surface finish of the arc-shaped hardware cover.

[0025] Working principle: In use, molten metal is first injected into the main channel 23. Guided by the diversion protrusions 24, the molten metal is evenly distributed into the two diversion channels 25. Subsequently, the molten metal enters the molding space between the lower mold core 22 and the upper mold cavity 12 through the diversion port 26. During the molten metal filling process, excess molten metal is collected by the overflow groove 27 to ensure that each lower mold core 22 receives an appropriate and uniform amount of molten metal. Finally, after cooling and demolding steps, a high-quality arc-shaped hardware cap is obtained.

[0026] In summary, the die-casting mold for the arc-shaped hardware cap in this embodiment, through optimized flow channel design, precise molding cavity structure, and efficient overflow control system, achieves high-quality and high-efficiency production of the arc-shaped hardware cap.

[0027] Based on Example 1, this example further optimizes the upper mold structure to improve the demolding efficiency and molding quality of the arc-shaped hardware cover.

[0028] like Figure 2 As shown, the outer periphery of the upper mold cavity 12 is surrounded by multiple upper mold forming ejector pins 13. During the demolding process, these upper mold forming ejector pins 13 can evenly apply a pushing force to the upper surface of the arc-shaped hardware cover, ensuring that the hardware cover can be smoothly ejected from the upper mold cavity 12, while avoiding deformation or damage to the hardware cover due to uneven demolding force. In addition, an upper mold forming top post 14 is also provided in the middle of the upper mold cavity 12. This top post can provide additional support from the center of the hardware cover during demolding, further ensuring smooth demolding and the integrity of the hardware cover.

[0029] In order to improve the ejection efficiency of the lower mold, the lower mold core 22 has been improved in this embodiment.

[0030] like Figure 3 As shown, the lower mold core 22 is provided with multiple ejector holes 28. During demolding, these ejector holes 28 allow the ejector mechanism (such as an ejector rod) to pass through and act directly on the bottom of the arc-shaped hardware cover, thereby realizing the ejector operation from bottom to top. This design not only improves the uniformity and efficiency of ejection, but also effectively avoids deformation or scratches on the bottom of the hardware cover caused by uneven ejector force.

[0031] To ensure precise positioning of the upper and lower molds during the mold closing process, this embodiment provides a limiting structure between the lower template 21 and the upper template 11.

[0032] like Figure 3As shown, limiting protrusions 29 are provided at the four corners of the lower mold core 21, while limiting grooves 15 are provided at the corresponding positions of the limiting protrusions 29 on the upper mold 11. During the mold closing process, the limiting protrusions 29 can be accurately inserted into the limiting grooves 15, thereby achieving precise positioning of the upper and lower molds. This design not only improves the mold closing accuracy but also ensures the consistency of the forming dimensions and shape of the arc-shaped hardware cover.

[0033] In order to accelerate the cooling speed of the mold and improve production efficiency, cooling water channels are provided in the upper mold plate 11 and the lower mold plate 21 respectively in this embodiment.

[0034] like Figure 2 As shown, the upper mold plate 11 has a first cooling water channel 16, while the lower mold plate 21 has a second cooling water channel 20. These cooling water channels can be connected to an external cooling system, using circulating coolant to remove heat from the inside of the mold, thereby accelerating the cooling speed of the mold. This design not only shortens the molding cycle of the curved hardware cover but also improves the service life of the mold and the molding quality of the product.

[0035] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0036] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0037] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “may include” and “have,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A die-casting mold for an arc-shaped hardware cover, characterized in that: The device includes an upper mold and a lower mold. The upper mold includes an upper template with two upper mold cavities at its bottom. Each upper mold cavity is an arc-shaped groove. The lower mold includes a lower template with a lower mold core on its upper surface. The lower mold core corresponds to the upper mold cavity and is shaped like a frustum. A main channel is provided on one side of the upper surface of the lower template. A diversion protrusion is provided on the main channel, dividing the main channel into two diversion channels. One diversion channel corresponds to one lower mold core, and the other diversion channel corresponds to the other lower mold core. The diversion channels are arc-shaped and surround the outside of the lower mold core. The diversion channels are connected to the lower mold core through multiple diversion ports. Multiple overflow grooves surround the outside of the lower mold core.

2. The arc-shaped hardware cover die-casting mold according to claim 1, characterized in that: The upper mold cavity is surrounded by multiple upper mold forming ejector pins, and an upper mold forming ejector post is provided in the middle of the upper mold cavity.

3. The arc-shaped hardware cover die-casting mold according to claim 1, characterized in that: The lower mold core is provided with multiple top material holes.

4. The arc-shaped hardware cover die-casting mold according to claim 1, characterized in that: Limiting protrusions are provided at the four corners of the lower template core, and limiting grooves are provided on the upper template corresponding to the limiting protrusions.

5. The die-casting mold for an arc-shaped hardware cover according to claim 1, characterized in that: The upper template is provided with a first cooling water channel.

6. The arc-shaped hardware cover die-casting mold according to claim 1, characterized in that: The lower template is equipped with a second cooling water channel.

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