Quick casting mold for hub
By designing a multi-part combination coated sand shell casting mold, using buffer cavity, inner gate and inner runner structures, the problems of poor quality of the wheel hub and slow pouring speed in the prior art are solved, and a more efficient pouring process is achieved. Higher quality wheel production.
Patent Information
- Application Number
- CN202420973689.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing molded sand casting process has mass defects such as shrinkage and pores when producing wheel hubs, and the traditional casting process only passes through a single casting hole, resulting in a slow pouring speed.
A quick casting mold for hubs is designed, through the combination of coated sand shells of multiple parts, including gate cups, inner pouring shells and fixed shells, a buffer cavity, multiple inner gates and inner runners are set up to increase the flow rate of molten iron. and reduce pore generation.
Through the design of multiple inner gates and inner runners, the pouring speed is improved, the generation of air holes in the fixed cavity is reduced, and the quality and production efficiency of the wheel hub are improved.
Smart Images
Figure CN222448159U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of casting molds, and in particular relates to a hub rapid casting mold. Background Art
[0002] The wheel hub is one of the important parts of the automobile chassis. As a rotating moving part, the wheel hub must have a certain strength and meet the requirements of fatigue resistance and good heat dissipation.
[0003] However, in the casting process of existing wheel hubs, most of them adopt green sand casting process. The wheel hubs cast in this way have quality defects such as shrinkage (holes) and air holes, resulting in poor quality. In addition, only a single casting hole is used during the casting process, resulting in a slow casting speed. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing green sand casting process has shrinkage (holes) and air holes when producing wheel hubs, resulting in poor quality, and in the traditional pouring process, pouring is mostly performed through a single pouring hole, resulting in a slow pouring speed.
[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a wheel hub rapid casting mold, including a sand shell, the sand shell is composed of a pouring cup, an ingode shell and a molding shell, the pouring cup is buckled with the top of the ingode shell, a buffer cavity is arranged in the middle of the ingode shell, a plurality of ingodes are arranged on the side of the buffer cavity, an ingode is arranged inside the ingode shell on the outside of the ingode, the bottom of the ingode shell is buckled and connected with the molding shell, and a molding cavity connected with the ingode is arranged on the inner side of the molding shell.
[0006] As an improvement, the sand shell is made of coated sand, and ceramic particles are mixed in the coated sand.
[0007] As an improvement, the interior of the pouring cup is connected to the top of the buffer cavity, the inner diameter of the pouring cup gradually decreases from top to bottom, and the inner diameter of the lower end surface of the pouring cup is the same as the upper end inner diameter of the buffer cavity.
[0008] As an improvement, the buffer cavity is located in the middle of the cast-in shell, and the ingates are concentrically arranged with the buffer cavity.
[0009] As an improvement, the number of the multiple gates is 4 and they are evenly arranged on the side wall of the buffer cavity.
[0010] As an improvement, the molded shell consists of a molded outer shell and a molded inner shell, and the molded inner shell is located in the middle of the molded outer shell, the bottom of the molded inner shell is snap-fitted to the middle of the molded outer shell, and the top of the molded inner shell is snap-fitted to the middle bottom of the inner shell.
[0011] The advantages of the utility model compared with the prior art are:
[0012] The casting mold is combined into one by a plurality of coated sand shells, which is convenient for manufacturing and demoulding, and the pouring cup can effectively increase the flow rate of molten iron and the replenishment of molten iron. The buffer cavity, multiple ingates and ingates can slow down the flow rate of molten iron entering the molding cavity, thereby reducing the generation of pores inside the molding cavity. In addition, multiple ingates can increase the amount of molten iron entering the ingates and the molding cavity at the same time, thereby improving the pouring speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a cross-sectional structural diagram of a wheel hub rapid casting mold.
[0014] As shown in the figure: 1. Sand shell; 2. Pouring cup; 3. Inner shell; 4. Molding shell; 5. Buffer cavity; 6. Multiple inner gates; 7. Inner runner; 8. Molding cavity; 9. Molding outer shell; 10. Molding inner shell DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0017] Embodiment 1:
[0018] As the instruction manual Figure 1 As shown, a wheel hub rapid casting mold includes a sand shell 1, which is made of coated sand and is mixed with ceramic particles. The coated sand is used as the shell material because of its high strength, low moisture content, low residual impurities in the casting, low pores, sand holes, and slag inclusion defects in the casting, and high product qualification rate. At the same time, a uniform, burr-free bonding layer is formed on the surface of the coated sand, thereby improving the dimensional accuracy of the casting, saving metal materials, and reducing production costs.
[0019] In the present invention, the sand shell 1 is composed of a pouring cup 2, an inner shell 3 and a shaping shell 4. The pouring cup 2 is buckled with the upper part of the inner shell 3. A buffer cavity 5 is arranged in the middle of the inner shell 3. The interior of the pouring cup 2 is connected with the top of the buffer cavity 5. The inner diameter of the pouring cup 2 gradually decreases from top to bottom, and the inner diameter of the lower end surface of the pouring cup 2 is the same as the upper inner diameter of the buffer cavity 5. The buffer cavity 5 is located in the middle of the inner shell 3, and the inner runner 7 is concentrically arranged with the buffer cavity 5. A plurality of inner gates 6 are arranged on the side of the buffer cavity 5. The number is 4, and they are evenly arranged on the side wall of the buffer cavity 5. The inside of the cast-in shell 3 is provided with an ingrate 7 on the outside of the ingrate. The bottom of the cast-in shell 3 is buckled and connected with the molding shell 4. The inner side of the molding shell 4 is provided with a molding cavity 8 connected with the ingrate 7. The molding shell 4 is composed of a molding outer shell 9 and a molding inner shell 10, and the molding inner shell 10 is located in the middle of the molding outer shell 9. The bottom of the molding inner shell 10 is buckled and connected with the middle of the molding outer shell 9, and the top of the molding inner shell 10 is buckled and connected with the middle bottom of the cast-in shell 3.
[0020] During the specific implementation of the utility model, the molten iron enters the buffer cavity 5 through the pouring cup 2, which can effectively reduce the flow rate of the molten iron and reduce the generated bubbles. Then, the molten iron enters the interior of the ingrate 7 through multiple ingates 6, and is introduced through four ingates at the same time, so that the molten iron quickly fills the ingrate 7 and the molding cavity 8.
[0021] The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.
Claims
1. A wheel hub rapid casting mold, characterized in that: It includes a sand shell, which is composed of a pouring cup, an ingode shell and a molding shell. The pouring cup is buckled with the top of the ingode shell, a buffer cavity is arranged in the middle of the ingode shell, a plurality of ingodes are arranged on the side of the buffer cavity, an ingode is arranged inside the ingode shell on the outside of the ingode, the bottom of the ingode shell is buckled and connected with the molding shell, and a molding cavity connected with the ingode is arranged on the inner side of the molding shell.
2. The wheel hub rapid casting mold according to claim 1, characterized in that: The sand shell is made of coated sand, and ceramic particles are mixed in the coated sand.
3. The wheel hub rapid casting mold according to claim 1, characterized in that: The interior of the pouring cup is communicated with the top of the buffer cavity, the inner diameter of the pouring cup gradually decreases from top to bottom, and the inner diameter of the lower end surface of the pouring cup is the same as the upper end inner diameter of the buffer cavity.
4. The wheel hub rapid casting mold according to claim 1, characterized in that: The buffer cavity is located in the middle of the cast-in shell, and the cast-in channel is concentrically arranged with the buffer cavity.
5. The wheel hub rapid casting mold according to claim 1, characterized in that: The number of the multiple gates is 4 and they are evenly arranged on the side wall of the buffer cavity.
6. The wheel hub rapid casting mold according to claim 1, characterized in that: The molded shell consists of a molded outer shell and a molded inner shell, and the molded inner shell is located in the middle of the molded outer shell, the bottom of the molded inner shell is buckled and connected to the middle of the molded outer shell, and the top of the molded inner shell is buckled and connected to the middle bottom of the inner shell.