Precision casting mold core

Abstract

The utility model relates to the technical field of precision casting, in particular to a precision casting mold core, which comprises a main body cylinder, a cover body and a bottom support, the main body cylinder is provided with a top surface and a bottom surface corresponding to the top surface, the cover body is arranged on the top surface, the bottom support is arranged on the bottom surface, and the cover body is arranged on the bottom surface. A cavity is formed among the lower surface of the cover body, the upper surface of the bottom support and the inner wall of the main body cylinder, two groups of reinforcing structures are arranged in the cavity, and the reinforcing structures are respectively and fixedly connected with the cover body and the bottom support; by arranging the hollow main body cylinder, the weight of the solid core under the same volume is reduced, and the operation simplicity and convenience are improved; by arranging a reinforcing structure, the overall compressive strength of the core is enhanced, and the problem that the hollow cylinder is prone to deformation in the using process is solved; and a dismounting hanging hole is formed between every two adjacent transverse supports, so that the mold core can be conveniently taken out after casting production is completed, and the demolding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of precision casting technology, and particularly relates to a precision casting core. Background Art

[0002] Existing casting cores are already relatively common. For example, a valve casting core with the patent number 201720755348.0. For details, please refer to Figure 1 , such as Figure 1 shown, the body 1 is cylindrical, it has two end faces, an arc-shaped convex ring 5 is arranged on the circumferential surface of the body 1 and is located in the middle thereof, a concave cavity 2 is opened on the two end faces of the body 1 and extends inward; two concave cavities 2 are opened on each end face, and they are symmetrical about the axis line of the body 1. There are two connecting rods 3, which are respectively fixed on the two end faces of the body 1, and it overlaps with the axis line of the body 1. There are also two limiting rods 4, which are respectively fixed at the ends of the connecting rods 3 and are perpendicular to them. The convex block 7 is cylindrical, it is integrally arranged on the convex ring 5 and is perpendicular to the body 1. The substrate 8 is integrally arranged at the outer end of the convex block 7. The above-mentioned body 1 is solid. During the production and manufacturing of a large-sized ball valve, if the core used is solid, the overall weight will be relatively large and it is not easy to operate. However, a hollow core will deform during use.

[0003] Therefore, it is necessary to provide a precision casting core with a hollow structure and a reinforcement structure. Summary of the Utility Model

[0004] The utility model provides a precision casting core to solve the above technical problems.

[0005] To achieve the above object, an embodiment of the utility model provides a precision casting core, including: a main body cylinder, a cover body, and a bottom support. The main body cylinder has a top surface and a bottom surface corresponding to the top surface. The cover body is arranged on the top surface, and the bottom support is arranged on the bottom surface. A cavity is formed between the lower surface of the cover body, the upper surface of the bottom support, and the inner wall of the main body cylinder. Two groups of reinforcement structures are arranged in the cavity, and the reinforcement structures are respectively fixedly connected to the cover body and the bottom support.

[0006] Further, the reinforcement structure includes a vertical main support, and the vertical main support is fixedly connected to the cover body or the bottom support.

[0007] Further, the cross-section of the vertical main support is polygonal.

[0008] Further, the vertical main support includes a plurality of vertical planes, and a horizontal support is arranged on each vertical plane.

[0009] Further, one end of the horizontal support is fixedly connected to the vertical main support, and the other ends of the horizontal supports on the same horizontal line are connected with a closed-loop support.

[0010] Further, the outer wall of the closed-loop support abuts against the inner wall of the main body cylinder.

[0011] Further, a removal hanging hole is formed between two adjacent horizontal supports.

[0012] Further, the length of the vertical main support is 0.25 - 0.5 times the length of the cavity.

[0013] Further, the main body cylinder is connected to the cover body or the bottom support by a thread.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By providing a hollow main body cylinder, the weight of a solid core of the same volume is reduced, and the operation simplicity is improved;

[0016] By providing a reinforcement structure, the overall compressive strength of the core is enhanced, and the problem that the hollow cylinder is prone to deformation during use is solved;

[0017] By forming a removal hanging hole between two adjacent horizontal supports, it is convenient to take out the core after the casting production is completed, and the demolding efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below with reference to the drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of a casting core in the prior art;

[0020] Figure 2 It is a three-dimensional sectional view of the optimal embodiment of a precision casting core of the present utility model;

[0021] Figure 3 It is a three-dimensional view of the optimal embodiment of a precision casting core of the present utility model;

[0022] Figure 4 It is a three-dimensional view of the optimal embodiment inside the main body cylinder of the present utility model;

[0023] Figure 5 It is a three-dimensional view of the optimal embodiment of the bottom support and the reinforcement structure of the present utility model.

[0024] Wherein, 100, main body cylinder; 101, cavity; 200, cover body; 300, bottom support; 400, reinforcement structure; 401, vertical main support; 402, horizontal support; 403, closed-loop support; 404, removal hanging hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0026] Please refer to Figure 2 and participate in Figure 3 and Figure 4 , Figure 2 is a three-dimensional sectional view of the optimal embodiment of a precision casting core of the present utility model; Figure 3 is a three-dimensional view of the optimal embodiment of a precision casting core of the present utility model; Figure 4 is a three-dimensional view of the optimal embodiment inside the main body cylinder of the present utility model. As Figures 2 to 4 shown, at least one embodiment provides a precision casting core, including: a main body cylinder 100, a cover body 200, and a bottom support 300; the main body cylinder 100 is threadedly connected to the cover body 200 or the bottom support 300.

[0027] The main body cylinder 100

[0028] The outer contour of the main body cylinder 100 fits the inner contour of the required casting ball valve body. The main body cylinder 100 is a hollow structure. The main body cylinder 100 has a top surface and a bottom surface corresponding to the top surface. The cover body 200 is arranged on the top surface, and the bottom support 300 is arranged on the bottom surface. A cavity 101 is formed between the lower surface of the cover body 200, the upper surface of the bottom support 300, and the inner wall of the main body cylinder 100. Two groups of reinforcement structures 400 are arranged in the cavity 101. The reinforcement structures 400 are fixedly connected to the cover body 200 and the bottom support 300 respectively. The cover body 200 and the bottom support 300 make the cavity 101 relatively airtight.

[0029] The reinforcement structure 400

[0030] Please continue to refer to Figure 2 and combine with Figure 5 , Figure 5 is a three-dimensional view of the optimal embodiment of the bottom support and the reinforcement structure of the present utility model. As Figure 2 and Figure 5 shown, the composition of the reinforcement structure 400 will be specifically described below. Two groups of reinforcement structures 400 are respectively fixed under the cover body 200 and on the upper surface of the bottom support 300. The reinforcement structure 400 can be taken out of the cavity 101 along with the cover body 200 or the bottom support 300; specifically, the reinforcement structure 400 includes a vertical main support 401. The length of the vertical main support 401 is 0.25 - 0.5 times the length of the cavity 101; therefore, the two groups of reinforcement structures 400 abut or separate, and the specific length is set according to the length ratio of the cavity 101. The vertical main support 401 is fixedly connected to the cover body 200 or the bottom support 300. The cross-section of the vertical main support 401 is a polygon. As Figure 4As shown, it is a square, which can be an equilateral triangle, a pentagon, or a hexagon. The vertical main support 401 includes multiple vertical planes, and the angle between adjacent two vertical planes is the same. Each vertical plane is provided with a horizontal support 402 to achieve the effect of evenly distributing force. One end of the horizontal support 402 is fixedly connected to the vertical main support 401, and the other ends of the horizontal supports 402 on the same horizontal line are connected with a closed-loop support 403. The outer wall of the closed-loop support 403 abuts against the inner wall of the main body cylinder 100. To facilitate the removal of the core after the casting production is completed, a removal hanging hole 404 is formed between adjacent two horizontal supports 402. With the help of a long rod hook, the core can be pulled out from the casting, improving the demoulding efficiency.

[0031] In summary, by setting the hollow main body cylinder 100, the weight of the solid core under the same volume is reduced, and the operation simplicity is improved; by setting the reinforcement structure 400, the overall compressive strength of the core is enhanced, and the problem that the hollow cylinder is prone to deformation during use is solved; by forming the removal hanging hole 404 between adjacent two horizontal supports 402, the removal of the core after the casting production is completed is facilitated, and the demoulding efficiency is improved.

[0032] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A precision casting core, characterized in that, Comprising: A main body cylinder (100), a cover body (200) and a bottom support (300). The main body cylinder (100) has a top surface and a bottom surface corresponding to the top surface. The cover body (200) is arranged on the top surface, and the bottom support (300) is arranged on the bottom surface. A cavity (101) is formed between the lower surface of the cover body (200), the upper surface of the bottom support (300) and the inner wall of the main body cylinder (100). Two groups of reinforcement structures (400) are arranged in the cavity (101), and the reinforcement structures (400) are respectively fixedly connected to the cover body (200) and the bottom support (300).

2. The precision casting core according to claim 1, wherein: The reinforcement structure (400) includes a vertical main support (401), and the vertical main support (401) is fixedly connected to the cover body (200) or the bottom support (300).

3. The precision casting core according to claim 2, wherein: The cross-section of the vertical main support (401) is polygonal.

4. The precision casting core according to claim 3, wherein: The vertical main support (401) includes a plurality of vertical planes, and a transverse support (402) is arranged on each vertical plane.

5. A precision casting core as claimed in claim 4, wherein: One end of the transverse support (402) is fixedly connected to the vertical main support (401), and the other ends of the transverse supports (402) on the same horizontal line are connected with a closed-loop support (403).

6. The precision casting core according to claim 5, characterized in that: The outer wall of the closed-loop support (403) abuts against the inner wall of the main body cylinder (100).

7. The precision casting core according to claim 6, wherein: A removal hanging hole (404) is formed between two adjacent transverse supports (402).

8. The precision casting core according to claim 2, wherein: The length of the vertical main support (401) is 0.25 - 0.5 times the length of the cavity (101).

9. The precision casting core according to claim 1, characterized in that: The main body cylinder (100) is threadedly connected to the cover body (200) or the bottom support (300).

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