Sand mold structure beneficial to removal of double riser necks

Abstract

The utility model relates to the technical field of casting production, and discloses a sand mold structure beneficial to removal of double riser necks, which comprises a partition riser nest sand core, the two riser necks are arranged in the partition riser nest sand core, the top of the partition riser nest sand core is fixedly connected with a partition riser sleeve, and the partition riser sleeve is fixedly connected with the partition riser nest sand core. Two through holes are formed in the partition plate riser sleeve, the appearance of the partition plate riser sleeve is cylindrical, the bottom of the riser neck corresponds to the tops of the through holes, the partition plate riser nest sand core is used for partitioning the riser, and the through holes are used for guiding flowing of molten metal. In the utility model, through the matching of the partition plate riser nest sand core and the partition plate riser sleeve, the riser is effectively divided into two parts in the middle position, and when a riser neck needs to be removed after a casting is cooled, the design enables the removal process to be simpler and more convenient, and meanwhile, the quality of the casting is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of casting production, in particular to a sand mold structure which is conducive to removing double riser necks. Background Art

[0002] A riser is a supplementary component added to the top or side of a casting to prevent defects. It is an essential process feature for addressing shrinkage in ductile iron castings. The riser neck, the channel connecting the riser to the casting, plays a crucial role in ensuring the riser's shrinkage-feeding capability. A reasonable riser and riser neck configuration can effectively address shrinkage cavities and shrinkage defects in castings. Due to limitations in casting structure and production costs, the double-riser neck process is becoming increasingly popular, maximizing the riser's effective shrinkage-feeding effect.

[0003] In the prior art, some double riser necks are difficult to remove during use, which will have an adverse effect on casting quality, production efficiency and subsequent processing. Therefore, in response to the above problems, a sand mold structure that is conducive to the removal of double riser necks is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a sand mold structure that is conducive to the removal of the double riser neck, aiming to improve the problem that the prior art cannot quickly remove the double riser neck.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a sand mold structure that is conducive to the removal of double riser necks, including a partition riser nest sand core, two riser necks are opened inside the partition riser nest sand core, and a partition riser sleeve is fixedly connected to the top of the partition riser nest sand core, and two through holes are opened inside the partition riser sleeve.

[0006] As a further description of the above technical solution:

[0007] The outer shape of the partition riser sleeve is cylindrical, and the partition riser nest sand core is used to separate the risers.

[0008] As a further description of the above technical solution:

[0009] The bottom of the neck corresponds to the top of the through hole, and the through hole is used to guide the flow of molten metal.

[0010] The utility model has the following beneficial effects:

[0011] 1. In this utility model, the riser is effectively split into two parts at the center by combining the separator riser core and the separator riser sleeve. This design simplifies the removal of the riser neck after the casting cools. Workers can simply remove the riser neck by tapping, significantly improving post-processing efficiency, saving time and labor costs, and accelerating the overall casting production process.

[0012] 2. In this utility model, the presence of the baffles allows for more precise removal without damaging the casting. The design of the riser neck and through-holes guides and disperses stress during riser removal, further ensuring a smooth removal process while guaranteeing casting quality. This avoids damage to the casting caused by improper riser removal, improving both the yield rate and the reliability of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a sand mold structure that is beneficial to the removal of double riser necks proposed by the present invention;

[0014] Figure 2 This is a schematic diagram of a partition riser pocket sand core structure of a sand mold structure that is conducive to removing double riser necks proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of a through-hole structure of a sand mold structure that is beneficial to the removal of double riser necks proposed by the present invention;

[0016] Figure 4 This is a cross-sectional view of a partition riser sleeve structure of a sand mold structure that is conducive to removing double riser necks proposed by the utility model.

[0017] Legend:

[0018] 1. Partition riser socket sand core; 101. Riser neck; 2. Partition riser sleeve; 202. Through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Reference Figures 1 to 3As shown, the present invention provides an embodiment: a sand mold structure that is conducive to the removal of double riser necks, including a baffle riser nest sand core 1. The baffle riser nest sand core 1 is an important component of the sand mold structure and has two riser necks 101 formed therein. The position and shape of the necks 101 are carefully designed to cooperate with the through holes 202 on the baffle riser sleeve 2. The necks 101 guide the flow of molten metal and dissipate heat within the baffle riser nest sand core 1. At the same time, the baffle riser nest sand core 1 is used to separate the risers and may also disperse stress during the riser neck removal process, making the removal process smoother.

[0021] Reference Figures 2 to 4 As shown, the top of the partition riser nest sand core 1 is fixedly connected with a partition riser sleeve 2, and the outer shape of the partition riser sleeve 2 is cylindrical. The cylindrical design is combined with the through hole 202 to guide the flow of molten metal, so that it can better contact with the molten metal during the casting process, ensuring the shrinkage compensation effect of the riser. Two through holes 202 are provided inside the partition riser sleeve 2. The number and position of the through holes 202 are precisely calculated, which can create favorable conditions for the subsequent removal of the double riser neck without affecting the shrinkage compensation effect of the riser. After the casting is cooled and formed, the through hole 202 can provide a channel for removing the riser neck, so that the staff can operate more conveniently. At the same time, the design of the through hole 202 may also play a role in guiding and dispersing stress during the removal process, further improving the removal efficiency.

[0022] Working Principle: During the casting process, the baffle riser core 1 and the baffle riser sleeve 2 together constitute the key part of the sand mold structure. The baffle riser core 1 is provided with a riser neck 101, and the baffle riser sleeve 2 is provided with a through hole 202.

[0023] After the molten metal is poured into the sand mold, the riser is effectively split into two parts at the center of the casting due to the presence of the baffle riser core 1 and the baffle riser sleeve 2. This design creates favorable conditions for removing the riser neck without affecting the riser feeding effect.

[0024] After the casting cools and forms, the riser neck needs to be removed. The presence of a partition located only at the center of the riser makes the removal process much simpler. Workers can easily remove the riser neck by tapping, for example. The presence of the partition allows for more precise removal without damaging the casting. The design of the riser neck 101 and through-hole 202 likely guides and disperses stress during removal, allowing for smoother removal of the riser neck.

[0025] In summary, the effect of rapid removal of the riser neck is achieved, and the post-processing efficiency is improved.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sand mold structure that is conducive to the removal of double riser necks, comprising a baffle riser pocket sand core (1), characterized in that: Two riser necks (101) are provided inside the partition riser nest sand core (1), a partition riser sleeve (2) is fixedly connected to the top of the partition riser nest sand core (1), and two through holes (202) are provided inside the partition riser sleeve (2).

2. A sand mold structure that is conducive to removing double riser necks according to claim 1, characterized in that: The outer shape of the partition riser sleeve (2) is cylindrical, and the partition riser nest sand core (1) is used to separate the risers.

3. The sand mold structure that is conducive to the removal of double riser necks according to claim 1, characterized in that: The bottom of the neck (101) corresponds to the top of the through hole (202), and the through hole (202) is used to guide the flow of molten metal.

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