Die-casting casting quality visualization structure and die-casting die
By designing a quality visualization structure for die-casting parts in the die-casting mold and utilizing the shape formed by the pressure changes of molten metal and gas, the high cost and lag of existing non-destructive testing are solved, enabling real-time judgment and efficient detection of die-casting product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KOLBENSCHMIDT PIERBURG SHANGHAI NONFERROUS COMPONENTS
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-17
AI Technical Summary
Existing non-destructive testing technologies such as X-ray and industrial CT equipment are costly, have delayed test results, are inefficient, cannot perform batch testing, cannot promptly determine the quality of die-cast products, and cannot detect microstructure.
Design a quality visualization structure for die-casting parts, including a parting surface section and a casting quality visual inspection section. Different end shapes are formed by changes in molten metal pressure and gas pressure to achieve real-time quality judgment.
It enables real-time assessment of die-cast product quality, simplifies the testing process, reduces equipment costs, improves testing efficiency, and can promptly detect issues such as air leaks and insufficient molten metal pressure.
Smart Images
Figure CN224128574U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting quality inspection technology, and in particular to a visualization structure for the quality of die-casting castings, and a die-casting mold using the visualization structure. Background Technology
[0002] In the production process of die-cast products, quality problems caused by wear and leakage from the barrel, punch and mold, or abnormalities in the vacuum or pressure system can be addressed by non-destructive testing using X-rays or industrial CT. This type of non-destructive testing can identify substandard die-cast products without damaging the casting, and therefore has been widely used.
[0003] However, this non-destructive testing method still has the following shortcomings: (i) The purchase and use costs of both X-ray inspection systems and industrial CT inspection equipment are relatively high; (ii) X-ray inspection or industrial CT inspection requires the castings to be transferred to the inspection station before the quality of the castings can be determined immediately, and the inspection results have a certain lag; (iii) The efficiency of non-destructive testing by X-ray or industrial CT is low, and usually only sampling inspection can be carried out, rather than 100% inspection of the entire batch of products; (iv) The results of non-destructive testing by X-ray or industrial CT are often shrinkage defects, and the microstructure of the product cannot be detected. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a quality visualization structure and die casting mold for die casting that can promptly determine the quality of castings and is simple and convenient to use.
[0005] The present invention adopts the following technical solution:
[0006] This utility model provides a quality visualization structure for die-casting parts, formed at the parting surface of the fixed mold and the moving mold at the end of the filling of the casting. It includes a parting surface segment and a casting quality visual inspection segment. One end of the parting surface segment is open and extends laterally to the other end with an internal cavity. The casting quality visual inspection segment is connected to the end of the parting surface segment away from the opening. The internal cavity of the casting quality visual inspection segment extends in a straight line and is inclined to the internal cavity of the parting surface segment. The parting surface segment is located at the parting surface where the fixed mold and the moving mold meet. The casting quality visual inspection segment is located on the fixed mold or the moving mold.
[0007] Preferably, the parting surface segment has a drainage section at the opening of its internal cavity, which can drain the molten metal overflowing from the end of the casting filling into the internal cavity of the parting surface segment.
[0008] Preferably, the parting surface segment has a cooling segment formed in the middle of its internal cavity, and the cooling segment extends laterally from the opening of the parting surface segment to the other end in a wave shape.
[0009] Preferably, each peak on the cooling segment is a trapezoidal protrusion, and the casting quality visual inspection segment extends in a straight line along the trough side of the cooling segment.
[0010] Preferably, the parting surface segment has a sealed section at the end of its internal cavity away from the opening, and the distance between the sealed section and the opening of the parting surface segment is greater than the distance between the casting quality visual inspection section and the opening of the parting surface segment.
[0011] Preferably, the internal cavity of the casting quality visual inspection section is a tapered shape that gradually narrows away from the parting surface section.
[0012] This utility model also provides a die casting mold, including a fixed mold and a moving mold, the fixed mold and the moving mold are connected and form a die casting quality visualization structure at the parting surface at the end of the filling of the casting, and the opening of the parting surface section is connected to the overflow groove on the die casting mold.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] In use, the quality visualization structure for die-casting parts of this utility model guides the molten metal from the slag pot, overflow tank, or product edge, allowing it to enter through the opening of the parting surface under pressure. After filling the parting surface, the molten metal changes direction to fill the casting quality visual inspection section until the gas pressure in the casting quality visual inspection section rises to balance with the molten metal pressure, at which point the molten metal stops filling. Finally, the connection between the fixed mold and the moving mold can be released to obtain the quality visualization component.
[0015] The quality visualization component will form different end shapes depending on the different pressures of the molten metal and the gas pressure in the casting quality visual inspection section. By visually inspecting the end shape on the quality visualization component, the casting quality problems caused by air leakage in the vacuum die-casting mold or insufficient pressure of the molten metal during the die-casting filling process can be judged in time.
[0016] The die-casting mold of this utility model naturally possesses the aforementioned beneficial effects due to the adoption of the above-mentioned structure for visualizing the quality of die-casting parts, which will not be elaborated further here. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the quality visualization structure for die-casting parts in this embodiment of the present invention.
[0018] Figure 2 This is a cross-sectional view of the quality visualization structure of the die-casting casting in this embodiment of the present invention.
[0019] Figure 3 This is a schematic diagram of the fixed mold structure of the die-casting mold in an embodiment of this utility model.
[0020] Figure 4This is a schematic diagram of the moving mold structure of the die-casting mold in an embodiment of this utility model.
[0021] Figure 5 This is a schematic diagram of the die-casting structure obtained after the die-casting mold is removed in an embodiment of this utility model.
[0022] The reference numerals in the attached figures are explained as follows:
[0023] 1. Parting surface segment
[0024] 101. Segmented Drainage
[0025] 102. Segmented cooling
[0026] 103. Sealing Sections
[0027] 2. Visual inspection section of casting quality
[0028] 3. Fixed mold
[0029] 4. Moving model
[0030] 5. Quality visualization components
[0031] 6. Castings Detailed Implementation
[0032] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.
[0033] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0036] See Figure 1 This embodiment provides a quality visualization structure for die-casting parts, formed at the parting surface of the fixed mold and the moving mold at the end of the casting filling. It includes a parting surface segment 1 and a casting quality visual inspection segment 2. One end of the parting surface segment 1 is open and extends laterally to the other end with an internal cavity. The casting quality visual inspection segment 2 is connected to the end of the parting surface segment 1 away from the opening, and the internal cavity of the casting quality visual inspection segment 2 extends in a straight line and is inclined to the internal cavity of the parting surface segment 1. The parting surface segment 1 is located at the parting surface where the fixed mold and the moving mold meet, and the casting quality visual inspection segment 2 is located on the fixed mold or the moving mold.
[0037] In this embodiment, the die-casting casting quality visualization structure guides molten metal from the slag pot, overflow tank, or product edge, allowing it to enter through the opening of parting surface section 1 under pressure. After filling parting surface section 1, the molten metal changes direction to fill casting quality visual inspection section 2 until the gas pressure in casting quality visual inspection section 2 rises to balance with the molten metal pressure, at which point filling stops. Finally, the connection between the fixed mold and the moving mold is released to obtain the quality visualization component. This quality visualization component forms different end shapes depending on the molten metal pressure and the gas pressure in the casting quality visual inspection section. By visually inspecting the end shape on this quality visualization component, casting quality problems caused by air leakage in the vacuum die-casting mold or insufficient molten metal pressure during the die-casting filling process can be promptly identified.
[0038] Specifically, when the vacuum die-casting mold leaks air or the pressure of the molten metal is insufficient, the gas in the casting quality visual inspection section 2 will reach pressure balance with a larger volume. The end shape on this quality visualization component will be more incomplete than under normal circumstances. That is, after the molten metal stops filling, the bottom cavity in the casting quality visual inspection section 2 will be larger.
[0039] Therefore, by visually inspecting the end shape on this quality visualization component, one can assess whether the barrel, punch, and die are severely worn and leaking, so as to replace or repair the die in time; in addition, it can also be used to check whether the vacuum system is working properly.
[0040] Meanwhile, thanks to the timely judgment of casting quality by the visualization structure of die casting quality in this embodiment, real-time feedback can be provided when debugging auxiliary processes such as VP conversion, boosting pressure, vacuum valve improvement and slow injection time. After adjusting the parameters, it can be immediately known whether the parameter has a good or bad effect on the casting quality, or whether the effect is minimal.
[0041] Preferably, in one specific embodiment, the casting quality visual inspection section 2 is located on the moving mold.
[0042] Preferably, see Figure 2 The parting surface segment 1 has a drainage segment 101 at the opening of its internal cavity. The drainage segment 101 can drain the molten metal overflowing from the end of the casting filling to the internal cavity of the parting surface segment 1.
[0043] Preferably, see Figure 2 The parting surface segment 1 has a cooling segment 102 formed in the middle of its internal cavity. The cooling segment 102 extends laterally from the opening of the parting surface segment 1 to the other end in a wave shape.
[0044] The cooling section 102 can cool the molten metal, so that the temperature of the molten metal decreases and the viscosity increases after flowing through the cooling section 102. On the one hand, it can prevent gas from entering the molten metal and forming bubbles during the filling process; on the other hand, it can also seal the parting surface between the fixed mold and the moving mold to prevent air leakage and ensure the accuracy of the final test results.
[0045] Preferably, see Figure 2 Each peak on the cooling section 102 is a trapezoidal protrusion, and the casting quality visual inspection section 2 extends in a straight line to the trough side of the cooling section 102 to enhance the cooling effect of the cooling section 102 on the molten metal.
[0046] Preferably, see Figure 2 The parting surface segment 1 has a sealing segment 103 formed at the end of its internal cavity away from the opening, and the distance between the sealing segment 103 and the opening of the parting surface segment 1 is greater than the distance between the casting quality inspection segment 2 and the opening of the parting surface segment 1. In actual use, the molten metal fills the parting surface segment 1 before changing direction to fill the casting quality inspection segment 2. The sealing segment 103 can fully seal the parting surface between the fixed mold and the moving mold, ensuring the accuracy of the final inspection results.
[0047] Preferably, see Figure 1 and Figure 2 The internal cavity of the casting quality visual inspection section 2 is a tapered shape that gradually narrows away from the parting surface section 1, so as to ensure that the end shape on the quality visualization component is completely separated from the fixed mold or moving mold after demolding, so as to visually inspect the end shape on the quality visualization component.
[0048] It should be noted that the internal cavity design pressure of casting quality visual inspection section 2 varies depending on the shape of the casting product. In a specific embodiment, the internal cavity design pressure of casting quality visual inspection section 2 can be 30-80 MPa. In addition, the size of the internal cavity of casting quality visual inspection section 2 can also be adjusted by changing the structural design.
[0049] Better, see Figure 2In this embodiment, the casting quality visual inspection section 2 extends in a straight line perpendicular to the parting surface section 1, so that the final quality visualization component can be easily detached from the casting quality visual inspection section 2.
[0050] See Figure 3 and Figure 4 This embodiment also provides a die casting mold, including a fixed mold 3 and a moving mold 4. The fixed mold 3 and the moving mold 4 are connected and form the above-mentioned quality visualization structure of the die casting at the parting surface at the end of the casting filling. The opening of the parting surface segment 1 is connected to the overflow groove on the die casting mold.
[0051] In this embodiment, during the use of the die-casting mold, the gases generated during melting and pouring enter the mold cavity along with the molten metal. They then overflow into the die-casting quality visualization structure along with the molten metal, and are ultimately compressed into the internal cavity of the casting quality visual inspection section 2. Due to the presence of these gases, the molten metal cannot completely fill the casting quality visual inspection section 2, and the end shape on the quality visualization component is often incomplete. Therefore, by visually inspecting the end shape on the quality visualization component, one can promptly determine casting quality problems caused by air leakage in the vacuum die-casting mold or insufficient molten metal fluid pressure during the die-casting filling process.
[0052] Furthermore, since the die-casting mold in this embodiment has the aforementioned quality visualization structure for die-casting parts, it is possible to refer to the quality visualization structure after one demolding. Figure 5 This process simultaneously yields casting 6 and quality visualization component 5, avoiding multiple demolding operations and making it simple and easy to use.
[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A die casting quality visualization structure formed at a parting plane of a fixed mold and a movable mold at an end of filling of a casting, characterized by, It includes a parting surface section (1) and a casting quality visual inspection section (2). One end of the parting surface section (1) is open and extends laterally to the other end with an internal cavity. The casting quality visual inspection section (2) is connected to the end of the parting surface section (1) away from the opening. The internal cavity of the casting quality visual inspection section (2) extends in a straight line and is inclined to the internal cavity of the parting surface section (1). The parting surface section (1) is located at the parting surface where the fixed mold and the moving mold meet. The casting quality visual inspection section (2) is located on the fixed mold or the moving mold.
2. The die casting quality visualizing structure according to claim 1, characterized by, The parting surface segment (1) has a drainage segment (101) at the opening of its internal cavity. The drainage segment (101) can drain the molten metal overflowing from the end of the casting filling into the internal cavity of the parting surface segment (1).
3. The die casting quality visualizing structure according to claim 1, characterized by, The parting surface segment (1) has a cooling segment (102) formed in the middle of its internal cavity. The cooling segment (102) extends laterally from the opening of the parting surface segment (1) to the other end in a wave shape.
4. The die casting quality visualizing structure according to claim 3, characterized by, Each peak on the cooling segment (102) is a trapezoidal protrusion, and the casting quality visual inspection segment (2) extends in a straight line to the trough side of the cooling segment (102).
5. The die casting quality visualization structure according to claim 1, characterized by, The parting surface segment (1) has a sealing segment (103) at the end of its internal cavity away from the opening, and the distance between the sealing segment (103) and the opening of the parting surface segment (1) is greater than the distance between the casting quality visual inspection segment (2) and the opening of the parting surface segment (1).
6. The die casting quality visualizing structure according to claim 1, characterized by, The internal cavity of the casting quality visual inspection section (2) is a cone shape that gradually narrows away from the parting surface section (1).
7. A die-casting mold, characterized in that, It includes a fixed mold (3) and a moving mold (4), the fixed mold (3) and the moving mold (4) are connected and form a quality visualization structure of the die casting as described in any one of claims 1-6 at the parting surface at the end of the casting filling, and the opening of the parting surface segment (1) is connected to the overflow groove on the die casting mold.