Core support for casting sand core and casting valve body

Abstract

The utility model discloses a chaplet for casting a sand core and a casting valve body, and aims to solve the problems that the height of the conventional chaplet is generally fixed and is lack of flexibility, so that the management cost is increased, and time and resources are consumed. According to the technical scheme, the core support for casting the sand core and the casting valve body are characterized in that the core support for casting the sand core comprises a first supporting piece, a second supporting piece and a connecting column, studs are arranged in the centers of the opposite sides of the first supporting piece and the second supporting piece, and the connecting column comprises a first column body and a second column body which are the same in structure and internally provided with cavities; and first positioning bearings are arranged in cavities of the first column body and the second column body. According to the core support for casting the sand core and the casting valve body, by rotating the driving block, the driving block drives the fixing sleeve to rotate through the fixing column, so that the stud in threaded fit with the fixing sleeve generates relative displacement, and the distance between the first supporting sheet and the second supporting sheet which are fixed to the stud is adjusted; and the core support can be flexibly adjusted according to the position of the sand core and the distance needing to be supported.

Description

Technical Field

[0001] The utility model relates to the technical field of casting chaplets, and more specifically, it relates to a chaplet for casting sand cores and a casting valve body. Background Art

[0002] The valve body is an important part of a valve, and its production is mainly completed through the casting process. During the casting process of the valve body, sand cores are required to form the internal cavity and specific structure of the valve body. When the sand cores cannot maintain their correct positions, chaplets need to be used for assistance to prevent core breakage, ensure the wall thickness of the casting, reduce the rejection rate, and improve the finished product rate of the casting.

[0003] During use, the end of the chaplet with a support surface is attached to the sand core, and the other end is abutted against a harder support in the cavity. The height of the chaplet is the distance between the sand core and the inner wall of the cavity. However, the height of the existing chaplets is usually fixed, lacking flexibility. It may be necessary to replace multiple chaplets with different heights to meet production requirements, which not only increases the management cost but also consumes time and resources. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a chaplet for casting sand cores and a casting valve body, which solve the problem that the height of the existing chaplets is usually fixed, lacking flexibility, and may require replacing multiple chaplets with different heights to meet production requirements, which not only increases the management cost but also consumes time and resources.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: A chaplet for casting sand cores and a casting valve body, comprising a first support piece, a second support piece, and a connecting column. The centers of the opposite sides of the first support piece and the second support piece are both provided with stud bolts. The connecting column includes a first column body and a second column body with the same structure and an internal cavity. The cavities of the first column body and the second column body are both provided with first positioning bearings. The inner ring of the first positioning bearing is provided with a fixing sleeve. The two stud bolts respectively extend into the inner cavities of the two fixing sleeves and are threadedly engaged with them. The other ends of the two fixing sleeves are concentrically provided with fixing columns. The two fixing columns respectively penetrate to the outside of the first column body and the second column body and are jointly connected with a driving block. The two sides of the driving block are respectively attached to the outer walls of the first column body and the second column body.

[0006] The present utility model is further provided as: The first support piece and the second support piece are both provided with annular convex edges, and the inner walls of the convex edges are attached to the outer walls of the connecting column.

[0007] The present utility model is further provided as: The outer wall of the first column body is provided with scale lines, and the outer wall of the driving block is provided with a pointing line pointing to the scale lines.

[0008] The present utility model is further configured such that: a plurality of convex ridges are uniformly distributed on the outer wall of the driving block.

[0009] The present utility model is further configured such that: through holes for the fixing column to pass through are formed on both the first column body and the second column body, a second positioning bearing is fixedly sleeved on the fixing column, and the outer ring of the second positioning bearing is fixedly connected to the inner wall of the through hole.

[0010] The present utility model is further configured such that: a plurality of melting holes penetrate through both the first column body and the second column body outside the cavity.

[0011] The present utility model also provides a casting valve body, which includes a valve body main body and a plurality of chaplets located inside it, and the chaplets are the chaplets for the casting sand core as described above.

[0012] In summary, the present utility model has the following beneficial effects:

[0013] By rotating the driving block, the driving block drives the fixing sleeve to rotate through the fixing column, so that the stud in threaded cooperation with it undergoes relative displacement, and the distance between the first support piece and the second support piece fixed to the stud is adjusted, enabling the chaplet to be flexibly adjusted according to the position of the sand core and the distance to be supported, eliminating the need to manage chaplets of numerous sizes, and improving production efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic external structure diagram of the chaplet of the present utility model;

[0015] Figure 2 is a schematic internal structure diagram of the chaplet of the present utility model.

[0016] In the figure: 1, first support piece; 2, second support piece; 3, stud; 4, first column body; 5, second column body; 6, first positioning bearing; 7, fixing sleeve; 8, fixing column; 9, driving block; 10, convex edge; 11, scale line; 12, pointing line; 13, convex ridge; 14, second positioning bearing; 15, melting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] The present utility model will be described in detail below with reference to the drawings.

[0021] Refer to Figure 1 - Figure 2 , a core support for a casting sand core and a casting valve body, including a first support piece 1, a second support piece 2 and a connecting column. At the centers of the opposite sides of the first support piece 1 and the second support piece 2, stud bolts 3 are fixedly provided. The connecting column includes a first column body 4 and a second column body 5 with the same structure and internal cavities. In the internal cavities of the first column body 4 and the second column body 5, first positioning bearings 6 are fixedly provided. A fixed sleeve 7 is fixedly provided on the inner ring of the first positioning bearing 6. The two stud bolts 3 respectively extend into the inner cavities of the two fixed sleeves 7 and are in threaded cooperation with them. At the other ends of the two fixed sleeves 7, fixed columns 8 are concentrically fixed. The two fixed columns 8 respectively penetrate to the outside of the first column body 4 and the second column body 5 and are jointly connected with a driving block 9. The two sides of the driving block 9 are respectively in contact with the outer walls of the first column body 4 and the second column body 5.

[0022] Additionally, annular convex edges 10 are fixedly provided on both the first support piece 1 and the second support piece 2. The inner walls of the convex edges 10 are in contact with the outer walls of the connecting column, enhancing the connection strength between the first support piece 1, the second support piece 2 and the connecting column, improving the overall stability and reliability of the core support, and being able to block the gaps between the connecting column and the first support piece 1 and the second support piece 2, making the overall product more beautiful.

[0023] Scale lines 11 are provided on the outer wall of the first column body 4, and a pointing line 12 pointing to the scale lines 11 is provided on the outer wall of the driving block 9, providing an intuitive reference for the rotation of the driving block 9 and making it more convenient and accurate for the operator to adjust the height of the core support.

[0024] A number of convex ridges 13 are evenly distributed on the outer wall of the driving block 9. The convex ridges 13 on the outer wall of the driving block 9 can provide better gripping and rotation driving effects.

[0025] Through holes for the fixing post 8 to pass through are formed on both the first cylinder 4 and the second cylinder 5. A second positioning bearing 14 is fixedly sleeved on the fixing post 8. The outer ring of the second positioning bearing 14 is fixedly connected to the inner wall of the through hole. By providing the second positioning bearing 14, the supporting ability of the fixing post 8 is enhanced, and the structural stability during the rotation of the fixing post 8 is improved.

[0026] A number of melting holes 15 penetrate through both the first cylinder 4 and the second cylinder 5 outside the cavity. The design of the melting holes 15 enables the casting liquid to quickly penetrate the core support, causing it to quickly melt and integrate with the casting liquid, thereby reducing defects such as air holes and inclusions in the casting and improving the density and mechanical properties of the casting.

[0027] Working principle: During use, by rotating the driving block 9, the driving block 9 drives the fixing sleeve 7 to rotate through the fixing post 8, causing the stud 3 in threaded cooperation with it to move relative to the fixing sleeve 7, that is, the first cylinder 4 and the first supporting piece 1, and the second cylinder 5 and the second supporting piece 2 move, and further adjusting the distance between the first supporting piece 1 and the second supporting piece 2. Moreover, the threaded cooperation between the stud 3 and the fixing sleeve 7 enables the core support to maintain a stable supporting force after being adjusted in place, allowing the core support to be flexibly adjusted according to the position of the sand core and the required supporting distance, eliminating the need to manage core supports of numerous sizes, and improving production efficiency and convenience.

[0028] The present utility model also provides a casting valve body, including a valve body main body and a number of core supports located inside it. The core support is the core support for the casting sand core described above. Therefore, the casting valve body with this core support for the casting sand core also has the same technical effects.

[0029] The above is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A core support for a casting sand core, characterized in that: The invention comprises a first support plate (1), a second support plate (2) and a connecting column, wherein a stud (3) is arranged at the center of one side opposite to the first support plate (1) and the second support plate (2), and the connecting column comprises a first column (4) and a second column (5) having the same structure and a cavity therein, wherein a first positioning bearing (6) is arranged in the cavity of the first column (4) and the second column (5), and a fixing sleeve (7) is arranged on the inner ring of the first positioning bearing (6), and the two studs (3) respectively extend to the inner cavity of the two fixing sleeves (7) and are threadedly matched therewith, and the other ends of the two fixing sleeves (7) are concentrically arranged with a fixing column (8), and the two fixing columns (8) respectively penetrate to the outside of the first column (4) and the second column (5) and are commonly connected to a driving block (9), and the two sides of the driving block (9) are respectively in contact with the outer walls of the first column (4) and the second column (5).

2. A core support for a casting sand core according to claim 1, characterized in that: The first support piece (1) and the second support piece (2) are both provided with an annular convex edge (10), and the inner wall of the convex edge (10) is in contact with the outer wall of the connecting column.

3. A core support for a casting sand core according to claim 1, characterized in that: A scale line (11) is provided on the outer wall of the first column (4), and a pointing line (12) pointing to the scale line (11) is provided on the outer wall of the driving block (9).

4. The core support for a casting sand core according to claim 1, characterized in that: A plurality of ridges (13) are evenly distributed on the outer wall of the driving block (9).

5. The core support for a casting sand core according to claim 1, characterized in that: The first column (4) and the second column (5) are both provided with through holes for the fixing column (8) to pass through, and the fixing sleeve (7) on the fixing column (8) is provided with a second locating bearing (14), and the outer ring of the second locating bearing (14) is fixedly connected to the inner wall of the through hole.

6. The core support for a casting sand core according to claim 1, characterized in that: The first column (4) and the second column (5) are both penetrated by a plurality of melting holes (15) outside the cavity.

7. A casting valve body, comprising a valve body and a core support located inside the valve body, characterized in that: The core support is a core support for casting sand cores as described in any one of claims 1 to 6.

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