Riser bush for casting

Abstract

The utility model provides a riser bush for casting. The riser bush comprises a riser bush body and a heat preservation heating plate, one end of the heat preservation heating plate is arranged at the bottom end of the riser bush body, and the other end of the heat preservation heating plate extends outwards. According to the riser bush for casting, the overall heat productivity is increased, so that the feeding effect of a casting is better.

Description

Technical Field

[0001] The utility model relates to the technical field of casting production, in particular to a riser sleeve for casting. Background Art

[0002] At present, the structure of castings on the market is becoming more and more complex, and various end customers have increasingly stringent requirements on product quality. Strictly ensuring the quality of complex structure castings and reducing production costs have become the primary issues to be solved for many auto parts castings.

[0003] For some castings, especially those with certain thick sections (especially rotating bodies), there is a distance between the conventional riser sleeve and the casting surface, resulting in insufficient shrinkage compensation when the conventional riser sleeve is used, which often causes insufficient quality of the casting. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a riser sleeve for casting to solve the technical problem mentioned in the background art that the conventional riser sleeve has insufficient shrinkage compensation which easily leads to insufficient quality of castings.

[0005] In order to solve this technical problem, the technical solution adopted by the utility model is:

[0006] A riser sleeve for casting, comprising a riser sleeve body and a heat-insulating heating plate;

[0007] The top end of the riser sleeve body is sealed, one end of the heat preservation and heating plate is arranged at the bottom end of the riser sleeve body, and the other end extends outward.

[0008] Furthermore, a partition is also provided in the riser sleeve body.

[0009] Furthermore, the heat preservation and heating plate is arranged on the partition, and the side surface of the heat preservation and heating plate is parallel to the side surface of the partition.

[0010] Furthermore, the riser sleeve body, the heat-insulating heating plate and the partition are made of the same material.

[0011] Furthermore, a positioning groove or a positioning notch is provided at the bottom end of the riser sleeve body, or both a positioning groove and a positioning notch are provided.

[0012] Furthermore, the thickness of the partition gradually decreases toward the direction approaching the heat preservation and heating plate.

[0013] Furthermore, the thickness of the heat preservation and heating plate is greater than or equal to the thickness of the bottom of the partition.

[0014] Furthermore, the width of the heat preservation and heating plate is greater than that of the partition.

[0015] Furthermore, the partition plate and the heat-insulating heating plate are respectively located on the axis of the riser sleeve body and are symmetrical about the axis of the riser sleeve body.

[0016] Furthermore, a gap is left between the heat-insulating heating plate and the outer side wall of the riser sleeve body.

[0017] Compared with the prior art, the advancement of this application is:

[0018] By arranging the heat preservation heating plate, the heat generation of the riser sleeve body is increased, and the shrinkage compensation is enhanced. At the same time, the heat preservation heating plate is arranged at the bottom end of the riser sleeve body and extends outward, so that the heat preservation heating plate is inserted deeper into the metal solution, and the overall heat generation is further increased, that is, the heat generation of the metal solution between the casting surface and the riser sleeve body is increased, making this part less likely to solidify, so as to better compensate for the shrinkage of the gradually specific thick part, thereby improving the quality of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0020] Figure 1 A schematic diagram of a riser sleeve for casting provided in one embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of a casting riser sleeve from another angle is shown;

[0022] Figure 3 for Figure 1 A schematic cross-sectional view of a riser sleeve for casting is shown.

[0023] Reference numerals:

[0024] The riser sleeve body 1, the positioning groove 11, the positioning notch 12, the heat preservation and heating plate 2, and the partition plate 3. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0026] Please also read Figure 1 and Figure 2 , this embodiment provides a riser sleeve for casting, including a riser sleeve body 1 and a heat preservation and heating plate 2;

[0027] The top of the riser sleeve body 1 is sealed, one end of the heat preservation and heating plate 2 is arranged at the bottom end of the riser sleeve body 1, and the other end extends outward.

[0028] By arranging the heat preservation and heating plate 2, the heating value of the riser sleeve body 1 is increased, and the shrinkage compensation is enhanced. At the same time, the heat preservation and heating plate 2 is arranged at the bottom end of the riser sleeve body 1 and extends outward, so that the heat preservation and heating plate 2 is inserted deeper into the metal solution, and the overall heating value is further increased, that is, the heating value of the metal solution between the casting surface and the riser sleeve body 1 is increased, making this part less likely to solidify, so as to better compensate for the shrinkage of the gradually specific thick part, thereby improving the quality of the casting.

[0029] In other solutions, a partition plate 3 is further provided in the riser sleeve body 1. By providing the partition plate 3, the metal solution in the riser sleeve body 1 can be divided into two parts, thereby making the subsequent processing easier.

[0030] In other schemes, the heat preservation and heating plate 2 is arranged on the partition 3, and the side of the heat preservation and heating plate 2 is parallel to the side of the partition 3. Specifically, the top of the heat preservation and heating plate 2 is flatly attached to the bottom of the partition 3 and the riser sleeve body 1 at the same time, thereby increasing the integrity of the device and being more conducive to later processing.

[0031] In other schemes, the materials of the riser sleeve body 1, the heat-insulating and heating plate 2 and the partition plate 3 are consistent. By making the materials consistent, a good heat-insulating and heating rate can be ensured.

[0032] In other schemes, the bottom end of the riser sleeve body 1 is provided with a positioning groove 11 or a positioning notch 12, or both a positioning groove 11 and a positioning notch 12. In some castings, especially rotating parts, ordinary risers lack positioning and are often difficult to put into the required position, which leads to poor shrinkage compensation effect. By adding positioning grooves 11 and positioning notches 12 to the riser sleeve body 1, the riser sleeve body 1 can be well positioned, thereby improving the shrinkage compensation rate.

[0033] In other schemes, the thickness of the partition 3 gradually decreases toward the heat preservation and heating plate 2. By setting the partition 3 to be thick at the top and thin at the bottom, the strength of the partition 3 on both sides after being filled with molten metal can be ensured, and the impact of the molten metal squeezing on the partition 3 can be reduced.

[0034] In other schemes, the thickness of the heat preservation and heating plate 2 is greater than or equal to the thickness of the bottom of the partition 3. Under this structure, a good heat generation rate can be guaranteed and good shrinkage compensation can be achieved.

[0035] In other schemes, the width of the heat preservation and heating plate 2 is greater than that of the partition 3. That is, both sides of the heat preservation and heating plate 2 are respectively located on the bottom end of the riser sleeve body 1, under which condition good shrinkage compensation can be achieved.

[0036] In other schemes, the partition 3 and the heat preservation and heating plate 2 are respectively located on the axis of the riser sleeve body 1 and are symmetrical about the axis of the riser sleeve body 1. That is, the partition 3 and the heat preservation and heating plate 2 are arranged in the middle of the riser sleeve body 1. The partition 3 is arranged in the middle so that the volume of the molten metal on both sides is similar, which is convenient for later cleaning; the heat preservation and heating plate 2 is arranged in the middle to facilitate shrinkage compensation.

[0037] In other schemes, a gap is left between the heat preservation and heating plate 2 and the outer side wall of the riser sleeve body 1. Thus, under the condition of achieving good shrinkage compensation, the installation can be better carried out to avoid the heat preservation and heating plate 2 abutting or squeezing the sand mold.

[0038] The above-mentioned riser sleeve for casting increases the overall heat generation, so that the shrinkage compensation effect of the casting is better.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A riser sleeve for casting, characterized in that: It includes a riser sleeve body and a heat-insulating heating plate; The top of the riser sleeve body is sealed, one end of the thermal insulation and heating plate is arranged at the bottom end of the riser sleeve body, and the other end extends outward; a partition is also arranged in the riser sleeve body; the thermal insulation and heating plate is arranged on the partition, and the side of the thermal insulation and heating plate is parallel to the side of the partition; the bottom end of the riser sleeve body is provided with a positioning groove or a positioning notch, or a positioning groove and a positioning notch are provided at the same time.

2. A casting riser sleeve according to claim 1, characterized in that: The riser sleeve body, the heat-insulating heating plate and the partition are made of the same material.

3. A casting riser sleeve according to claim 1, characterized in that: The thickness of the partition gradually decreases toward the direction approaching the heat preservation and heating plate.

4. A casting riser sleeve according to claim 1, characterized in that: The thickness of the heat preservation and heating plate is greater than or equal to the thickness of the bottom of the partition.

5. A casting riser sleeve according to claim 1, characterized in that: The width of the heat preservation and heating plate is greater than that of the partition.

6. A casting riser sleeve according to claim 1, characterized in that: The partition plate and the heat-insulating heating plate are respectively located on the axis of the riser sleeve body and are symmetrical about the axis of the riser sleeve body.

7. A casting riser sleeve according to claim 1, characterized in that: A gap is left between the heat preservation and heating plate and the outer side wall of the riser sleeve body.

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