Rubber sleeve core mold for silica sol precision casting
By using rubber sleeve core molds in precision casting of silicon sols, the problems of environmental pollution and high cost are solved, and the production of low-cost and pollution-free complex cavity is achieved, which improves production efficiency and wax product yield.
Patent Information
- Application Number
- CN202420490996.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The existing silicon sol precision casting technology has problems of environmental pollution and high production costs when making complex cavity, especially the single-use and high cost of the core lead to low production efficiency.
The rubber sleeve core mold is adopted including the first support mandrel, the rubber sleeve and the second support mandrel. The rubber sleeve is made of elastic material. The support mandrel is consistent with the inner cavity of the rubber sleeve, and the shape matches the inner cavity of the wax piece to support the core. The shaft is a split structure, allowing reuse and reducing environmental pollution and production costs.
The precision casting of silicon sols with complex cavity without pollution and low cost is achieved, which improves production efficiency and wax product yield, supports the mandrel to be reusable, and reduces labor costs.
Smart Images
Figure CN222156443U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of precision casting, in particular to a rubber sleeve core mold for silica sol precision casting. Background Art
[0002] Silica sol precision casting is an advanced casting process widely used in the fields of automobile manufacturing, aerospace and electronic equipment. It can produce complex-shaped and high-precision parts. Products with complex internal cavities are often encountered in silica sol precision casting. For complex cavities, it is usually necessary to choose urea cores, water-soluble cores or ceramic cores to form the inner cavity. These methods of making cores have a certain degree of pollution to the environment, and the cores made are disposable, with high production costs. Repeated production of cores also results in low production efficiency. Therefore, a core mold for silica sol precision casting with complex cavities that is pollution-free to the environment and has low use costs is required. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a rubber sleeve core mold for silica sol precision casting which is pollution-free to the environment and has low use cost.
[0004] In order to solve the above problems, the technical solution adopted by the utility model is:
[0005] A rubber sleeve core mold for silica sol precision casting, comprising a first supporting core shaft, a rubber sleeve and a second supporting core shaft, the rubber sleeve being provided with a first port and a second port which are interconnected, the first supporting core shaft being loaded into the rubber sleeve from the first port, the second supporting core shaft being loaded into the rubber sleeve from the second port, the first supporting core shaft and the second supporting core shaft being connected in the rubber sleeve, the inner cavity of the rubber sleeve being consistent with the outer shape of a connecting piece of the first supporting core shaft and the second supporting core shaft, and the outer shape of the rubber sleeve being consistent with the inner cavity of a wax piece.
[0006] As an implementation mode of the utility model, the rubber sleeve is made of elastic material, preferably silicone rubber or rubber.
[0007] As an implementation mode of the utility model, the rubber sleeve is formed in the core mold by being supported by the first supporting core shaft and the second supporting core shaft, and the wall thickness at the place where it is supported by the first supporting core shaft and the second supporting core shaft is set between 1 and 2 mm.
[0008] As an implementation manner of the present utility model, the first port axis and the second port axis are arranged at any angle.
[0009] As an implementation mode of the utility model, the first supporting mandrel is provided with a first positioning platform, and the first positioning platform is located outside the rubber sleeve for positioning in the wax part mold.
[0010] As an implementation mode of the utility model, the second supporting mandrel is provided with a second positioning platform, and the second positioning platform is located outside the rubber sleeve for positioning in the wax part mold.
[0011] As an implementation mode of the utility model, the outer end surface of the first supporting core shaft is provided with a weight-reducing hole, and the outer surface of the end portion is provided with a plurality of annular grooves.
[0012] As an implementation mode of the utility model, the first supporting core shaft and the second supporting core shaft are sleeved in the rubber sleeve, and the contacting parts thereof are cylindrical in shape, preferably cylindrical in shape.
[0013] As an implementation mode of the present utility model, the end portion of the second support core shaft is connected to the outer surface of the first support core shaft, and the contour of the second support core shaft portion is matched with the outer surface of the first support core shaft.
[0014] The beneficial effects of adopting the above technical solution are:
[0015] The utility model provides a rubber sleeve core mold for silica sol precision casting, comprising a first supporting core shaft, a rubber sleeve and a second supporting core shaft. The first supporting core shaft and the second supporting core shaft are sleeved in the rubber sleeve to support the rubber sleeve stably. The inner cavity of the rubber sleeve is consistent with the outer shape of the first supporting core shaft and the second supporting core shaft connecting piece, and the outer shape of the rubber sleeve is consistent with the inner cavity of the wax part. Products with complex internal cavities can be produced, and there is no need to use water or acid to dissolve the core, which will not pollute the environment. The rubber sleeve is made of elastic material, and the first supporting core shaft and the second supporting core shaft are split structures. After the wax mold is produced, it does not need to be violently dismantled and can be reused, with low production cost and high labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;
[0018] Figure 3 It is an exploded view of the three-dimensional structure of the utility model;
[0019] Figure 4 This is a schematic diagram of the connection structure between the first supporting mandrel and the second supporting mandrel of the utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the utility model in use state;
[0021] Figure 6 It is an exploded diagram of the structure of the utility model in use state.
[0022] in:
[0023] 1. First supporting mandrel; 1-1. First positioning platform; 1-2. Weight reduction hole; 1-3. Annular groove; 2. Rubber sleeve; 2-1. First port; 2-2. Second port; 3. Second supporting mandrel; 3-1. Second positioning platform; 4. Wax piece; 5. Wax piece mold. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is clearly and completely described below in conjunction with specific embodiments.
[0025] like Figures 1 to 4 The rubber sleeve core mold for silica sol precision casting shown includes a first supporting core shaft 1, a rubber sleeve 2 and a second supporting core shaft 3. The rubber sleeve 2 is provided with a first port 2-1 and a second port 2-2 which are interconnected. The first supporting core shaft 1 is loaded into the rubber sleeve 2 from the first port 2-1, and the second supporting core shaft 3 is loaded into the rubber sleeve 2 from the second port 2-2. The first supporting core shaft 1 and the second supporting core shaft 3 are connected in the rubber sleeve 2. The inner cavity of the rubber sleeve 2 is consistent with the shape of the connecting parts of the first supporting core shaft 1 and the second supporting core shaft 3. The first supporting core shaft 1 and the second supporting core shaft 3 support the rubber sleeve 2 firmly. The outer shape of the rubber sleeve 2 is consistent with the inner cavity of the wax piece 4 for molding the inner cavity of the wax piece 4.
[0026] The rubber sleeve 2 is made of elastic material, preferably silicone rubber or rubber; the rubber sleeve 2 is supported by the first supporting core shaft 1 and the second supporting core shaft 3 in the mold, and the wall thickness at the support of the first supporting core shaft 1 and the second supporting core shaft 3 is set between 1 and 2 mm. This thickness has excellent elasticity, a certain supporting force and is not easy to be damaged. During demolding, after the first supporting core shaft 1 and the second supporting core shaft 3 are taken out, the rubber sleeve 2 can be squeezed inwards and taken out from the wax piece 4 without damaging the wax piece 4, and the wax piece 4 has a high yield rate; the axis of the first port 2-1 and the axis of the second port 2-2 can be set to any angle according to product requirements.
[0027] The first supporting core shaft 1 and the second supporting core shaft 3 are inserted into the rubber sleeve 2, and the contact parts thereof are cylindrical in shape, preferably cylindrical in shape; the end of the second supporting core shaft 3 is connected to the outer surface of the first supporting core shaft 1, and the contour of the end of the second supporting core shaft 3 is adapted to the outer surface of the first supporting core shaft 1.
[0028] like Figure 4 and Figure 5As shown, it is a schematic diagram of the structure of the utility model used in conjunction with a wax mold 5 to make a wax part 4. The first supporting core shaft 1 is provided with a first positioning platform 1-1, and the first positioning platform 1-1 is located outside the rubber sleeve 2 for positioning in the wax mold 5. The second supporting core shaft 3 is provided with a second positioning platform 3-1, and the second positioning platform 3-1 is located outside the rubber sleeve 2 for positioning in the wax mold 5.
[0029] like Figures 1 to 6 As shown, the outer end face of the first supporting core shaft 1 is provided with a weight-reducing hole 1-2. When the size of the supporting core shaft is large, the weight-reducing hole 1-2 is provided on its non-molding end face to reduce the mass of the core mold to avoid excessive mass causing easy wear of the wax mold 5. The outer surface of the end of the first supporting core shaft 1 is provided with a plurality of annular grooves 1-3 for easy removal and placement to prevent slipping.
[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A rubber sleeve core mold for silica sol precision casting, characterized in that: The invention comprises a first supporting core shaft (1), a rubber sleeve (2) and a second supporting core shaft (3); the rubber sleeve (2) is provided with a first port (2-1) and a second port (2-2) which are connected to each other; the first supporting core shaft (1) is installed into the rubber sleeve (2) from the first port (2-1); the second supporting core shaft (3) is installed into the rubber sleeve (2) from the second port (2-2); the first supporting core shaft (1) and the second supporting core shaft (3) are connected in the rubber sleeve (2); the inner cavity of the rubber sleeve (2) matches the outer shape of the connecting piece of the first supporting core shaft (1) and the second supporting core shaft (3); and the outer shape of the rubber sleeve (2) matches the inner cavity of the wax piece (4).
2. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The rubber sleeve (2) is made of elastic material.
3. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The rubber sleeve (2) is supported by the first supporting core shaft (1) and the second supporting core shaft (3) to be formed in a mold, and the wall thickness of the rubber sleeve (2) at the position where the rubber sleeve is supported by the first supporting core shaft (1) and the second supporting core shaft (3) is set between 1 and 2 mm.
4. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The axis of the first port (2-1) and the axis of the second port (2-2) are arranged at any angle.
5. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The first supporting mandrel (1) is provided with a first positioning platform (1-1), and the first positioning platform (1-1) is located outside the rubber sleeve (2) and is used for positioning in the wax part mold (5).
6. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The second supporting mandrel (3) is provided with a second positioning platform (3-1), and the second positioning platform (3-1) is located outside the rubber sleeve (2) and is used for positioning in the wax part mold (5).
7. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The outer end surface of the first supporting core shaft (1) is provided with a weight-reducing hole (1-2), and the outer surface of the end portion is provided with a plurality of annular grooves (1-3).
8. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The first supporting core shaft (1) and the second supporting core shaft (3) are sleeved in the rubber sleeve (2), and the contacting parts thereof are cylindrical in shape.
9. The rubber sleeve core mold for silica sol precision casting according to claim 1, characterized in that: The end of the second supporting core shaft (3) is connected to the outer surface of the first supporting core shaft (1), and the profile of the end of the second supporting core shaft (3) is adapted to the outer surface of the first supporting core shaft (1).