Spacer frame casting mold
By optimizing the angle design of the spacer frame casting mold and the curved flow divider bridge, the problem of introducing trace amounts of air in vacuum die casting was solved, thus improving the quality and performance of the castings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-04-10
AI Technical Summary
In the existing vacuum die casting process, a small amount of air is easily trapped during the production of spacer frame, which leads to microscopic defects such as pores inside the casting, affecting product quality and performance.
A spacer bar frame casting mold was designed, including a frame body, a flow divider assembly, and a vacuum assembly. Through a specific angle design and a curved flow divider bridge, the flow divider process of the melt is optimized, and the introduction of air is reduced.
It effectively reduces porosity defects in castings, improves product quality and performance, and meets the requirements for use under harsh working conditions.
Smart Images
Figure CN224101780U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of mechanical manufacturing, in particular to a spacer bar frame casting mold. BACKGROUND
[0002] As an advanced casting forming technology with the characteristics of high speed and high efficiency, die casting has occupied a dominant position in the production of aluminum alloy automobile parts and electrical components. The application of die casting process to the production of a large number of spacer bar frames and other electrical fittings can significantly improve the production efficiency and product performance of the spacer bar frame.
[0003] However, in the traditional die casting process of the spacer bar frame, air is easily entrapped in the die casting mold cavity, which can easily form pores and other micro defects inside the casting, seriously affecting the internal quality and mechanical properties of the casting. In view of the above problems, a new type of vacuum die casting method has been developed and gradually emerged. The working principle of vacuum die casting is to use a special vacuum system to extract the air in the mold cavity before pouring the aluminum liquid into the spacer bar mold cavity, so that the mold cavity has a certain vacuum degree, and then the die casting forming operation is carried out. The vacuum system equipment and related supporting process of the current vacuum die casting have gradually matured and begun to be applied on a large scale in actual industrial production.
[0004] Due to the complexity of the vacuum die casting process itself and the particularity of some spacer bar die casting molds, it is still possible to introduce a small amount of air during die casting. The presence of these small amounts of air can form fine defects inside the casting, which can adversely affect the quality and performance of the final product, making it difficult to fully meet the use requirements of electrical fittings in harsh working conditions. Therefore, in view of the problem of introducing a small amount of air in the vacuum die casting process, it is necessary to develop a spacer bar frame casting mold that matches the vacuum die casting and can effectively reduce the mixing of air. CONTENT OF THE INVENTION
[0005] Therefore, the purpose of the present application is to provide a spacer bar frame casting mold to solve the problem of easy entrapment of a small amount of air in the existing vacuum production die casting process.
[0006] To achieve the above technical purpose, the present application provides a spacer bar frame casting mold, which comprises a frame body 1, a shunt assembly 2 and a vacuum pumping assembly 3.
[0007] The frame body 1 is a multi-rib frame structure, and the ribs are hollow to fill the melt and form a spacer bar frame body structure. The frame body 1 is provided with positioning holes 11 and exhaust holes 12.
[0008] The shunt assembly 2 comprises a pouring gate 21 and a plurality of shunt bridges 22; the shunt bridge 22 is a hollow pipe for guiding the flow of melt, one end of the shunt bridge 22 is communicated with the side of the edge close to the center position of the frame body 1, and the center line of the length direction of the shunt bridge 22 forms a first included angle with the center line of the length direction of the edge; the other end of the plurality of shunt bridges 22 converges at the center position of the frame body 1 or above the center position to form the pouring gate 21, and the center line of the length direction of the shunt bridge 22 forms a second included angle with the plane where the frame body 1 is located;
[0009] The vacuum assembly 3 comprises a vacuum pipe 31, a vacuum valve 32 and a connecting part 33; the vacuum pipe 31 is arranged in communication with the outer edge of the corner away from the center position of the frame body 1, and the connecting part 33 is used for fixing the vacuum pipe 31 with the outer edge of the corner; the vacuum valve 32 is arranged on the vacuum pipe 31 and is used for controlling the opening and closing of the vacuum pipe 31.
[0010] Further, the first included angle ranges from 30° to 60°.
[0011] Further, the shunt bridge 22 is in a curved structure.
[0012] Further, the curvature of the curve is less than 60°.
[0013] Further, one edge of the frame body 1 is communicated with at least one shunt bridge 22, and the number of shunt bridges 22 communicated with each edge is the same.
[0014] Further, the communication positions of the shunt bridges 22 and the frame body 1 are distributed at equal intervals in the length direction of each edge of the frame body 1.
[0015] Further, the second included angle ranges from 0° to 30°.
[0016] Further, the frame body 1 is one of a rectangle, a regular hexagon and a regular triangle.
[0017] Further, the overflow tank 4 is further arranged, the overflow tank 4 is communicated with the outer edge of the corner away from the center position of the frame body 1, and is used for receiving the melt overflowing from the frame body 1.
[0018] Further, the overflow tank 4 is arranged on the vacuum pipe 31.
[0019] In summary, the application provides a spacer frame casting mold, comprising a frame body 1, a flow distribution assembly 2, and a vacuum extraction assembly 3. The frame body 1 is a multi-rib frame structure, and the ribs are hollow. The frame body 1 is used to fill the melt to form a spacer frame body structure. The frame body 1 is provided with positioning holes 11 and exhaust holes 12. The flow distribution assembly 2 comprises a pouring opening 21 and a plurality of flow distribution bridges 22. The flow distribution bridge 22 is a hollow pipe used to guide the flow of the melt. One end of the flow distribution bridge 22 is connected to the side of the rib near the center of the frame body 1, and the center line of the length direction of the flow distribution bridge 22 forms a first angle with the center line of the length direction of the rib. The other end of the flow distribution bridge 22 converges at the center of the frame body 1 or above the center to form the pouring opening 21, and the center line of the length direction of the flow distribution bridge 22 forms a second angle with the plane of the frame body 1. The vacuum extraction assembly 3 comprises a vacuum pipe 31, a vacuum valve 32, and a connecting part 33. The vacuum pipe 31 is fixedly arranged through the connecting part 33 and is connected to the outer edge of the corner away from the center of the frame body 1. The vacuum valve 32 is arranged on the vacuum pipe 31 and is used to control the opening and closing of the vacuum pipe 31. The application has the following two special designs for the flow distribution assembly 2. First, the pouring opening 21 is formed by the convergence of the flow distribution bridge 22. This concentrated pouring method can effectively improve the stability of the melt flow in the casting mold. Second, the connection structure of the flow distribution bridge 22 and the frame body 1 is optimized through the design of multiple angles, which can promote the melt to flow in an orderly and stable laminar state, inhibit the generation of turbulence, fundamentally block the way of air entrainment by the melt, and significantly reduce the air content of the casting.
[0020] Compared with the prior art, the application adjusts the connection structure of the flow distribution bridge 22 and the frame body 1 by setting two angles, optimizes the flow distribution process of the melt, reduces the introduction of air, and helps to produce high-quality spacer frame castings. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0022] Figure 1 A top view of a spacer frame casting mold according to an embodiment of the application is provided.
[0023] Mark: 1, frame body; 2, flow distribution assembly; 3, vacuum extraction assembly; 11, positioning hole; 12, exhaust hole; 21, pouring opening; 22, flow distribution bridge; 31, vacuum pipe; 32, vacuum valve; 33, connecting part; 4, overflow groove. DETAILED DESCRIPTION
[0024] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of the present application.
[0025] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0026] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0027] Referring to Figure 1 The embodiments of the present application provide a spacer frame casting mold, which comprises a frame body 1, a flow distribution assembly 2, and a vacuum extraction assembly 3.
[0028] The frame body 1 is a multi-rib frame structure, and the ribs are hollowly arranged to fill the melt to form a spacer frame body structure. The frame body 1 is provided with positioning holes 11 and exhaust holes 12.
[0029] The flow distribution assembly 2 comprises a casting port 21 and a plurality of flow distribution bridges 22. The flow distribution bridge 22 is a hollow pipe for guiding the flow of melt. One end of the flow distribution bridge 22 is connected to the side of the rib near the center of the frame body 1, and the center line of the length direction of the flow distribution bridge 22 forms a first included angle with the center line of the length direction of the rib. The other end of the plurality of flow distribution bridges 22 converges at the center position of the frame body 1 or above the center position to form the casting port 21, and the center line of the length direction of the flow distribution bridge 22 forms a second included angle with the plane on which the frame body 1 is located.
[0030] The vacuumizing assembly 3 comprises a vacuum pipe 31, a vacuum valve 32, and a connecting part 33. The vacuum pipe 31 is arranged in communication with the outer edge of the corner away from the center of the frame body 1. The connecting part 33 is used to fix the vacuum pipe 31 with the outer edge of the corner. The vacuum valve 32 is arranged on the vacuum pipe 31 and used to control the opening and closing of the vacuum pipe 31.
[0031] It should be noted that the present application effectively solves the problem of air entrapment when the melt flows into the frame body 1 through the flow distribution bridge 22 by setting the connection mode of the flow distribution bridge 22 and the frame body 1, including the specific two included angles. The reason is that the included angles make the melt flow in a more uniform and orderly path when flowing into the frame body 1, ensuring that each part of the frame body 1 is fully and evenly filled, avoiding casting defects caused by uneven distribution of the melt. At the same time, the positioning hole 11 and the exhaust hole 12 of the frame body 1 also play a key role. The positioning hole 11 provides a reliable basis for the accurate positioning of the mold during the die casting process of the spacer frame, greatly improving the dimensional accuracy and consistency of the product. The exhaust hole 12 effectively solves the exhaust problem during the die casting process, so that the gas in the cavity can be smoothly discharged when the melt is filled, further optimizing the vacuum environment inside the mold.
[0032] In some embodiments, the first included angle ranges from 30° to 60°.
[0033] It should be noted that the melt flows into the frame body 1 at an appropriate angle, avoiding the disorder of melt flow and uneven filling caused by poor angle, thereby improving the integrity and quality of the casting formation.
[0034] Preferably, the flow distribution bridge 22 is of a curved structure.
[0035] It should be noted that the flow distribution bridge 22 of a curved structure can effectively improve the flow characteristics of the melt during the flow distribution process, that is, compared with a linear flow distribution bridge 22, the curved flow distribution bridge 22 can better guide the melt to disperse to each part of the frame body 1, reduce the impact and energy loss of the melt flow with the frame body 1, and further improve the consistency and stability of the casting quality.
[0036] More preferably, the curvature of the curve is less than 60°.
[0037] It should be noted that the size of the curvature of the curve can further adjust the bending shape of the curved flow distribution bridge 22, ensuring that the melt flowing in the flow distribution bridge 22 will not flow unsmoothly due to too large curvature, nor will it lose the guiding advantage of the melt due to too small curvature.
[0038] In some embodiments, one edge of the frame body 1 is in communication with at least one flow distribution bridge 22, and the number of flow distribution bridges 22 communicated by each edge is the same.
[0039] It should be noted that the frame body 1 is connected with the flow distribution bridge 22 on each side, and the number of the flow distribution bridges 22 on each side is consistent. Such a design can make the melt flow into the frame body 1 uniformly from each direction, avoid forming defects in some areas of the frame body 1 due to insufficient or missing melt flow from a side, and improve the balance of the overall quality of the spacer frame.
[0040] Preferably, the flow distribution bridge 22 is connected with the frame body 1 at positions that are equidistantly distributed along the length direction of each edge of the frame body 1.
[0041] It should be noted that by equidistantly distributing the connection positions of the flow distribution bridge 22 and the frame body 1 along the length direction of the edge, the layout of the flow distribution bridge 22 and the frame body 1 can be further optimized, and the inflow points of the melt on each edge of the frame body 1 can be uniformly distributed, which is helpful for the melt to uniformly fill in the frame body 1, and improves the stability and reliability of the casting quality.
[0042] In some embodiments, the second included angle ranges from 0° to 30°.
[0043] It should be noted that the center line of the length direction of the flow distribution bridge 22 and the plane where the frame body 1 is located form a second included angle ranging from 0° to 30°, that is, the pouring gate 21 can be arranged in parallel with the plane where the frame body 1 is located, or can be arranged higher than the plane where the frame body 1 is located. When the pouring gate 21 is arranged higher than the plane where the frame body 1 is located, the flow distribution bridge 22 and the plane where the frame body 1 is located have a certain inclination angle, and the melt can flow into the frame body 1 along the flow distribution bridge 22 with the certain inclination angle, thereby effectively avoiding the accumulation or uneven filling of the melt in the local area.
[0044] In some embodiments, the frame body 1 is one of a rectangle, a regular hexagon, and a regular triangle.
[0045] It should be noted that the frame body 1 provided in the present application can select a suitable shape according to actual application conditions to meet the actual design requirements of different power fitting spacer frames, so that the mold has universality.
[0046] In some embodiments, the overflow tank 4 is further arranged, and the overflow tank 4 is connected with the outer edge of the corner away from the center position of the frame body 1, and is used to receive the melt overflowing from the frame body 1.
[0047] It should be noted that the overflow tank 4 is arranged to be connected with the outer edge of the corner away from the center position of the frame body 1, and is used to collect the melt overflowing during the die casting process, so as to prevent the overflowing melt from damaging other parts of the mold. At the same time, it is also helpful to maintain the stability of the internal pressure of the mold, to ensure the smooth progress of the casting forming process, and to improve the casting forming quality.
[0048] Preferably, the overflow tank 4 is arranged on the vacuum pipe 31.
[0049] It should be noted that the overflow groove 4 is arranged on the vacuum pipe 31, so that the overflow groove 4 works in cooperation with the vacuum system, which not only helps to reasonably plan the mold space, but also can more efficiently discharge the excess melt by the negative pressure of the vacuum pipe 31, and optimize the overflow process.
[0050] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the foregoing examples or make equivalent replacements for some of the technical features, but any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A spacer bar frame casting mold, characterized in that, Includes the main frame (1), the shunt assembly (2), and the vacuum assembly (3); The frame body (1) is a multi-sided frame structure, and the edges are hollow to fill the melt and form a spacer frame body structure; the frame body (1) is provided with positioning holes (11) and venting holes (12). The flow divider assembly (2) includes a casting port (21) and multiple flow divider bridges (22); the flow divider bridges (22) are hollow pipes used to guide the flow of melt; one end of the flow divider bridge (22) is connected to one side of the edge near the center of the frame body (1), and the center line of the flow divider bridge (22) in the length direction forms a first angle with the center line of the edge in the length direction; the other ends of the multiple flow divider bridges (22) converge at or above the center of the frame body (1) to form a casting port (21), and the center line of the flow divider bridge (22) in the length direction forms a second angle with the plane of the frame body (1); The vacuum assembly (3) includes a vacuum tube (31), a vacuum valve (32), and a connecting part (33). The vacuum tube (31) is connected to the outer edge of the corner away from the center of the frame body (1). The connecting part (33) is used to fix the vacuum tube (31) to the outer edge of the corner. The vacuum valve (32) is provided on the vacuum tube (31) and is used to control the opening and closing of the vacuum tube (31).
2. The spacer frame casting mold according to claim 1, characterized in that: The angle range of the first included angle is 30°~60°.
3. The spacer frame casting mold according to claim 2, characterized in that: The diversion bridge (22) has a curved structure.
4. The spacer frame casting mold according to claim 3, characterized in that: The curvature of the curved structure is less than 60°.
5. The spacer frame casting mold according to claim 1, characterized in that: One edge of the frame body (1) is connected to at least one diversion bridge (22), and the number of diversion bridges (22) connected to each edge is the same.
6. The spacer frame casting mold according to claim 5, characterized in that: The connection points between the diversion bridge (22) and the frame body (1) are distributed at equal intervals along the length direction of each edge of the frame body (1).
7. The spacer frame casting mold according to claim 1, characterized in that: The second included angle ranges from 0° to 30°.
8. The spacer frame casting mold according to claim 1, characterized in that: The main body of the frame (1) is one of a rectangle, a regular hexagon, or an equilateral triangle.
9. The spacer frame casting mold according to claim 1, characterized in that: It also includes an overflow trough (4), which is connected to the outer edge of the corner away from the center of the frame body (1) and is used to receive the melt overflowing from the frame body (1).
10. The spacer frame casting mold according to claim 9, characterized in that: The overflow channel (4) is located on the vacuum tube (31).