Square hardware box die-casting die
By designing multiple overflow channels and a distribution channel system in the die-casting mold of square hardware boxes, the problems of uneven metal filling and poor overflow control were solved, achieving uniform metal feeding and effective discharge of excess liquid, thus improving product quality and production efficiency.
Patent Information
- Application Number
- CN202520092416.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing die-casting molds for square hardware boxes suffer from uneven molten metal filling and poor overflow control, leading to internal defects and unstable product quality, especially in the production of large or complex hardware boxes.
A die-casting mold including an upper mold and a lower mold was designed. By setting multiple overflow grooves and flow channel systems on the upper mold and lower mold, the molten metal is ensured to be fed uniformly from multiple directions. The design of independent feed inlets and overflow grooves enables uniform filling of molten metal and effective discharge of excess liquid.
It improves the flow efficiency of molten metal, reduces internal defects, enhances the structural strength and dimensional accuracy of products, improves production efficiency and product quality, and enhances the versatility and adaptability of molds.
Smart Images
Figure CN223833435U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hardware die-casting molds, and in particular to a square hardware box die-casting mold. Background Technology
[0002] In the hardware manufacturing industry, square hardware boxes, as common packaging containers or functional components, are in increasing demand, leading to higher requirements for production efficiency and product quality. Traditional square hardware box production often employs processes such as stamping, welding, or casting, but these methods frequently suffer from low production efficiency, low material utilization, difficulty in controlling product dimensional accuracy, and inconsistent surface quality. With the continuous advancement of mold technology, die casting, due to its high efficiency, precision, and ability to achieve complex shapes in a single molding process, has gradually become the mainstream method for manufacturing square hardware boxes.
[0003] However, existing die-casting mold designs for square hardware boxes still have some shortcomings. On the one hand, the mold structure design often neglects the flow characteristics of molten metal in the cavity, leading to uneven filling and internal defects such as porosity and shrinkage cavities, affecting the mechanical properties and appearance quality of the product. This problem is particularly prominent when molding larger or more complex hardware boxes. On the other hand, traditional mold designs often lack effective overflow control mechanisms, preventing excess molten metal from being effectively discharged, further exacerbating quality problems during the molding process. Utility Model Content
[0004] The purpose of this application is to provide a square hardware box die-casting mold to solve the problems of uneven filling and poor overflow control in the prior art, thereby improving production efficiency, ensuring product quality, and enhancing the versatility and adaptability of the mold.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A square hardware box die-casting mold includes an upper mold and a lower mold. The upper mold includes an upper template with a forming groove at its bottom. The side of the forming groove has a first overflow groove and a second overflow groove connected to the forming groove. Multiple first overflow grooves are provided and located on one side of the forming groove. The second overflow grooves are symmetrically arranged on both sides of the middle of the forming groove. The lower mold includes a lower template with a forming punch corresponding to the forming groove at the middle of its upper surface. A first main flow channel and a second main flow channel are mirror-imagely arranged on one side of the lower template, facing the forming punch. The first main flow channel is connected to the forming punch via a first branch flow channel, a second branch flow channel, and a third branch flow channel. The second main flow channel is connected to the forming punch via a fourth branch flow channel, a fifth branch flow channel, and a sixth branch flow channel. The first, second, and third branch flow channels are all connected to the forming punch via a first feed port, and the fourth, fifth, and sixth branch flow channels are all connected to the forming punch via a second feed port.
[0007] In one embodiment, the width of the first diversion channel is smaller than the width of the first inlet, the width of the second diversion channel is smaller than the width of the first inlet, and the width of the third diversion channel is smaller than the width of the first inlet.
[0008] In one embodiment, the width of the fourth branch channel is smaller than the width of the second inlet, the width of the fifth branch channel is smaller than the width of the second inlet, and the width of the sixth branch channel is smaller than the width of the second inlet.
[0009] In one embodiment, a third main channel is provided between the first main channel and the second main channel, and the third main channel is connected to the forming punch.
[0010] In one embodiment, the outer periphery of the forming punch is provided with a plurality of third overflow grooves.
[0011] In one embodiment, a first injection molding machine clearance groove is provided on one side of the upper template, and a first limiting step is provided on one side of the first injection molding machine clearance groove.
[0012] In one embodiment, a second injection molding machine clearance groove is provided on one side of the lower template, a second limiting step is provided on the second injection molding machine clearance groove, and a sprue top column is provided on the second limiting step.
[0013] The beneficial effects of this application are as follows:
[0014] The forming punch of the lower die in this application precisely corresponds to the forming groove of the upper die. Combined with the dual-sided first and second main runners and their respective branch runners, this design enables the simultaneous and uniform feeding of molten metal to the forming punch from multiple directions. This multi-point feeding method effectively balances the flow pressure of the molten metal within the die, reducing internal stress concentration caused by uneven flow and enhancing the structural strength and dimensional accuracy of the product. Furthermore, the first and second main runners are connected to the forming punch via three sets of runners, each with an independent inlet. This design not only improves the flow efficiency of the molten metal and shortens the forming cycle but also allows the die to flexibly adjust the feed rate according to different production needs, enhancing the die's versatility and adaptability, making it suitable for the efficient production of hardware boxes of different materials and thicknesses. The upper mold has multiple first overflow grooves and symmetrically distributed second overflow grooves on the side of the forming groove. The design of these overflow grooves not only effectively guides the outflow of excess molten metal and avoids the generation of internal defects such as air holes and shrinkage cavities, but also ensures the uniform filling of molten metal in the forming groove, thereby greatly improving the forming quality and surface finish of the product. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a square hardware box die-casting mold provided in an embodiment of this application;
[0016] Figure 2 A schematic diagram of the upper mold structure of a square hardware box die-casting mold provided in an embodiment of this application;
[0017] Figure 3 A schematic diagram of the lower mold structure of a square hardware box die-casting mold 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] like Figure 1 As shown, the square hardware box die-casting mold of the present invention comprises two main parts: an upper mold 1 and a lower mold 2. Figure 2 As shown, the upper mold 1 is mainly composed of an upper template 11. A forming groove 12 is provided at the center of the bottom of the upper template 11 to form the outer contour of the hardware box. The sides of the forming groove 12 are carefully designed with an overflow system, specifically including multiple first overflow channels 13 located on one side of the forming groove 12, and second overflow channels 14 symmetrically arranged on both sides of the middle of the forming groove 12. These overflow channels are designed to effectively guide excess molten metal out during the die-casting process, ensuring uniform filling of the molten metal within the forming groove 12 and avoiding the generation of internal defects such as porosity and shrinkage cavities.
[0020] like Figure 3 As shown, the lower mold 2 includes a lower template 21. A forming punch 22, which precisely corresponds to the forming groove 12 of the upper mold, is provided at the center of the upper surface of the lower template 21 to form the internal structure of the hardware box. In order to optimize the flow characteristics of the molten metal, a first main channel 23 and a second main channel 24 are mirrored on one side of the lower template 21. They are connected to the forming punch 22 through a carefully designed branch channel system.
[0021] like Figure 3 As shown, specifically, the first main runner 23 is connected to the forming punch 22 via the first branch runner 25, the second branch runner 26, and the third branch runner 27, while the second main runner 24 is connected to the forming punch 22 via the fourth branch runner 28, the fifth branch runner 29, and the sixth branch runner 30. Each branch runner (i.e., the first branch runner 25 to the third branch runner 27, and the fourth branch runner 28 to the sixth branch runner 30) is provided with an independent feed port (the first feed port 31 and the second feed port 32, respectively) to achieve uniform feeding of molten metal to the forming punch 22 from multiple directions simultaneously.
[0022] This multi-point feeding method not only improves the flow efficiency of molten metal and shortens the molding cycle, but also significantly reduces internal stress concentration caused by uneven flow by balancing the flow pressure in the mold, thereby enhancing the structural strength and dimensional accuracy of the product.
[0023] like Figure 3 As shown, during implementation, molten metal is injected into the first main channel 23 and the second main channel 24 respectively. The molten metal then flows evenly into the cavity between the forming punch 22 and the forming groove 12 through the various branch channels and the feed port. During the die casting process, excess molten metal flows out through the first overflow groove 13 and the second overflow groove 14, ensuring that the molten metal in the cavity is evenly and densely filled. After the molten metal cools and solidifies, the upper mold 1 and the lower mold 2 are opened, and the well-formed square hardware box can be removed.
[0024] Through the above specific embodiments, the present invention provides a square hardware box die-casting mold with optimized structure, uniform filling, and high production efficiency, which effectively improves the molding quality and production efficiency of hardware boxes and has broad application prospects.
[0025] like Figure 3 As shown, based on Example 1, this example further optimizes the width of the flow channel. For example... Figure 2As shown, the widths of the first runner 25, the second runner 26, and the third runner 27 are all designed to be smaller than the width of the first inlet 31. Similarly, the widths of the fourth runner 28, the fifth runner 29, and the sixth runner 30 are also smaller than the width of the second inlet 32. This design allows the molten metal to gradually accelerate as it enters the runners from the main runner and then be focused at the inlet through the narrower runners, thus flowing more evenly into the cavity between the forming punch 22 and the forming groove 12, further improving the uniformity of filling and the molding quality of the product.
[0026] like Figure 3 As shown, to further enhance the flow efficiency and filling uniformity of the molten metal, this embodiment adds a third main channel based on Embodiment 1. For example... Figure 3 As shown, the third main runner 33 is located between the first main runner 23 and the second main runner 24, and is directly connected to the forming punch 22. By adding the third main runner 33, the flow of molten metal in the mold can be further balanced, dead zones can be reduced, and all parts of the cavity can be fully filled with molten metal, thereby improving the overall performance and appearance quality of the product.
[0027] This embodiment improves the outer periphery of the forming punch 22. For example... Figure 3 As shown, the outer periphery of the forming punch 22 is provided with multiple third overflow grooves 34. These third overflow grooves 34 can further guide excess molten metal out, especially in the gap between the forming punch 22 and the forming groove 12, thereby effectively avoiding the accumulation of molten metal and the generation of internal defects, and improving the forming accuracy and surface finish of the product.
[0028] Considering the ease of operation and the durability of the mold in actual production, this embodiment further optimizes the upper mold plate 11 and the lower mold plate 21. For example... Figure 2 As shown, a first injection molding machine clearance groove 35 is provided on one side of the upper mold plate 11 to provide space for the operation of the injection molding machine and prevent interference with the mold during injection. A first limiting step 36 is also provided on one side of the first injection molding machine clearance groove 35 to limit the movement range of the injection molding machine and ensure the accuracy and stability of injection. Similarly, a second injection molding machine clearance groove 37 is also provided on one side of the lower mold plate 21, and a second limiting step 38 is provided on the second injection molding machine clearance groove 37. In addition, a sprue ejector 39 is provided on the second limiting step 38 to facilitate the ejection of sprue material after the mold is opened, thereby improving production efficiency.
[0029] Through the above-described further specific embodiments, the square hardware box die-casting mold provided by the present invention has been significantly optimized and improved in terms of structural design and functional implementation. It not only improves the molding quality and production efficiency of the product, but also enhances the durability and ease of operation of the mold, and has broad application prospects and significant practical value.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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 a square hardware box, characterized in that: The device includes an upper mold and a lower mold. The upper mold includes an upper template with a forming groove at its bottom. The side of the forming groove has a first overflow groove and a second overflow groove connected to the forming groove. Multiple first overflow grooves are located on one side of the forming groove. The second overflow grooves are symmetrically arranged on both sides of the middle of the forming groove. The lower mold includes a lower template with a forming punch corresponding to the forming groove at the middle of its upper surface. A first main flow channel and a second main flow channel are mirror-image of the forming punch on one side of the lower template. The first main flow channel is connected to the forming punch via a first branch flow channel, a second branch flow channel, and a third branch flow channel. The second main flow channel is connected to the forming punch via a fourth branch flow channel, a fifth branch flow channel, and a sixth branch flow channel. The first, second, and third branch flow channels are all connected to the forming punch via a first feed port. The fourth, fifth, and sixth branch flow channels are all connected to the forming punch via a second feed port.
2. The square hardware box die-casting mold according to claim 1, characterized in that: The width of the first diversion channel is smaller than the width of the first inlet, the width of the second diversion channel is smaller than the width of the first inlet, and the width of the third diversion channel is smaller than the width of the first inlet.
3. The square hardware box die-casting mold according to claim 1, characterized in that: The width of the fourth branch channel is smaller than the width of the second inlet, the width of the fifth branch channel is smaller than the width of the second inlet, and the width of the sixth branch channel is smaller than the width of the second inlet.
4. The square hardware box die-casting mold according to claim 1, characterized in that: A third main channel is provided between the first and second main channels, and the third main channel is connected to the forming punch.
5. A square hardware box die-casting mold according to claim 1, characterized in that: The outer periphery of the forming punch is provided with multiple third overflow grooves.
6. The square hardware box die-casting mold according to claim 1, characterized in that: A first injection molding machine clearance groove is provided on one side of the upper template, and a first limiting step is provided on one side of the first injection molding machine clearance groove.
7. The square hardware box die-casting mold according to claim 1, characterized in that: A second injection molding machine clearance groove is provided on one side of the lower template. A second limiting step is provided on the second injection molding machine clearance groove. A sprue top column is provided on the second limiting step.