CN211304684U - Side riser sleeve - Google Patents
Side riser sleeve Download PDFInfo
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- CN211304684U CN211304684U CN201921925967.5U CN201921925967U CN211304684U CN 211304684 U CN211304684 U CN 211304684U CN 201921925967 U CN201921925967 U CN 201921925967U CN 211304684 U CN211304684 U CN 211304684U
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- riser
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Abstract
The utility model discloses a side riser sleeve, which belongs to the riser casting technical field and is formed by splicing a left sand mould and a right sand mould which are symmetrical, wherein a side riser cavity is formed inside the side riser sleeve and consists of a riser main body and a side riser neck; the lower part of the side riser body is spherical, the upper part of the side riser body is a riser side wall, one side of the riser side wall is tangent to the spherical side riser body, the side riser neck is positioned on the right side of the lower part of the spherical side riser body, one side of the side riser neck is tangent to the spherical profile of the lower part of the side riser body, and the other side of the riser side wall is smoothly connected with the other side of the side riser neck; a wedge-shaped groove is formed in the top end face of the side wall of the riser; still be provided with the cutting edge waist between side riser neck and the foundry goods feeding region for the foundry goods clearance in-process is convenient for knock off the riser cover, and avoids getting rid of and leads to the foundry goods surface to lack the meat behind the riser cover, and this structure can realize putting of rising head in foundry goods side optional position, realizes eliminating foundry goods side heat festival, avoids the production of the regional shrinkage cavity shrinkage porosity defect of foundry goods side.
Description
Technical Field
The utility model belongs to the technical field of the rising head casting, concretely relates to side riser cover.
Background
In the casting industry, risers are one of the important means for ensuring the quality of castings. The purpose of riser feeding is that during the solidification process after the molten metal is filled in the cavity, the volume of the casting shrinks due to the change of density, and casting defects such as shrinkage cavity and shrinkage porosity are generated in the finally solidified area of the casting. Therefore, a riser is required to be placed at a position (generally, a part with a thick wall thickness) where the casting is solidified late, that is, a cavity with a larger thickness is extended out of the outer side of the casting feeding area, so that the solidification time of the area is later than that of the casting feeding area, and thus, the solidification defect of the casting alloy in the cavity of the casting mold appears in the riser, and the defect caused by shrinkage such as shrinkage cavity and shrinkage porosity at the casting part is avoided. And after the formed castings and the castings of the risers are solidified, removing the risers to finally obtain casting products with good internal quality.
The present relevant utility model of riser cover is the riser cover to the regional feeding in foundry goods top, and the side rising head design commonly used of casting enterprise is direct formation in the sand mould, but receives the restriction of drawing die direction, can only arrange the side rising head on the die joint, can't realize placing the rising head in side optional position and carry out the feeding to the foundry goods. The side riser is limited by parting and drawing directions, can only be placed on a parting surface of an adjacent sand mold, cannot realize a feeding means of a lateral parting surface position of a casting by placing a riser, and has no related content of a lateral riser sleeve at present.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a side riser bush can realize the feeding of the regional optional position of foundry goods side, solves the shrinkage cavity shrinkage porosity problem of foundry goods side position.
The utility model discloses a following technical scheme realizes:
a side riser sleeve is formed by splicing a left sand mould and a right sand mould which are symmetrical, a side riser cavity 2 is formed inside the side riser sleeve, and the side riser cavity 2 consists of a riser main body 3 and a side riser neck 4; the lower part of the side riser body 3 is spherical, the upper part of the side riser body is a riser side wall, one side of the riser side wall is tangent to the spherical side riser body, the side riser neck 4 is positioned on the right side of the spherical lower part of the side riser body, one side of the side riser neck 4 is tangent to the spherical profile of the lower part of the side riser body, and the other side of the riser side wall is smoothly connected with the other side of the side riser neck 4; a wedge-shaped groove 9 is formed in the top end face 7 of the side wall of the riser; a sharp-pointed waist 8 is further arranged between the side riser neck 4 and the casting feeding area 5 and is used for knocking off the riser sleeve conveniently in the casting cleaning process and avoiding the meat deficiency on the surface of the casting after the riser sleeve is knocked off.
Further, the diameter of the side feeder body 3 is D1, the distance from the center of the side feeder body to the top end face 7 of the feeder side wall is H, and D1 and H satisfy the following equation: h, D1 is (1-1.4) and 1; the distance between the center of the side feeder body 3 and the casting feeding area 5 is L1, and L1 and D1 satisfy the following formula: l1, D1 is (0.8-1.2) 1; the diameter of the top end face of the side feeder side wall is D2, and D2 and D1 satisfy the following formula: d2, D1 is (0.5-0.8) 1; the included angle between the other side of the side riser side wall and the tangent line of the other side of the riser neck 4 is R1, and R1 and D1 satisfy the following formula: r1, D1 (0.4-0.5) and 1; the length of the front waist 8 is L2, and the L2 and D1 satisfy the following formula: l2, D1 (0.5-0.8) and 1.
Compared with the prior art, the utility model has the advantages as follows:
the utility model discloses can realize the rising head in putting of foundry goods side optional position, realize eliminating foundry goods side heat festival, avoid the production of the regional shrinkage cavity shrinkage porosity defect of foundry goods side.
Drawings
FIG. 1 is a schematic view of the side riser bush assembly of the present invention;
FIG. 2 is a schematic cross-sectional view of the side riser bush of the present invention placed in a casting sand mold;
FIG. 3 is a schematic view of aluminum alloy liquid after solidification and forming in a cavity formed by a casting sand mold and a side riser bush;
fig. 4 is a schematic structural diagram of a lateral riser according to an embodiment of the present invention;
fig. 5 is a schematic size diagram of the riser bush of the present invention;
in the figure: the side riser comprises a side riser sleeve 1, a side riser inner cavity 2, a side riser main body 3, a side riser neck 4, a casting feeding area 5, a sand mold 6 in which the casting feeding area is located, a top end face 7 of a riser side wall, a sharp waist 8 and a wedge-shaped groove 9.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Example 1
As shown in fig. 1, the side riser sleeve is formed by splicing a left sand mould and a right sand mould which are symmetrical, a side riser cavity 2 is formed inside the side riser sleeve, and the side riser cavity 2 consists of a riser body 3 and a side riser neck 4; realizing feeding of a casting to-be-fed region 5; the casting feeding method comprises the following steps that a riser sleeve 1 is pre-embedded in a sand mold 6 at a position, to be fed, of a casting, so that a cavity communicated with a casting feeding area 5 is formed by a side riser cavity 2, a side riser neck 4 in the side riser cavity 2 provides a feeding channel, feeding of a casting feeding area 5 by a side riser body 3 is achieved, the lower portion of the side riser body 3 is spherical, the upper portion of the side riser body is a riser side wall, one side of the riser side wall is tangent to the spherical side riser body, the side riser neck 4 is located on the right side of the spherical lower portion of the side riser body, one side of the side riser neck 4 is tangent to the spherical lower portion profile of the side riser body, and the other side of the riser side wall is smoothly connected with the other side of the side riser neck 4; a wedge-shaped groove 9 is formed in the top end face 7 of the side wall of the riser; a sharp-pointed waist 8 is further arranged between the side riser neck 4 and the casting feeding area 5 and is used for knocking off the riser sleeve conveniently in the casting cleaning process and avoiding the meat deficiency on the surface of the casting after the riser sleeve is knocked off.
The size and feeding effect of the side feeder are mainly determined by the diameter D1 of the side feeder body, and the diameter of the side feeder can be defined into a plurality of series grades (for example, D1 is 60, 80, 100, 120 and 140 … …) according to the size of a hot spot of a casting to be fed;
the diameter of the side riser body 3 is D1, the distance from the center of the side riser body to the top end face 7 of the side riser side wall is H, and the D1 and H satisfy the following formula: h, D1 is (1-1.4) and 1; the distance between the center of the side feeder body 3 and the casting feeding area 5 is L1, and L1 and D1 satisfy the following formula: l1, D1 is (0.8-1.2) 1; the diameter of the top end face of the side feeder side wall is D2, and D2 and D1 satisfy the following formula: d2, D1 is (0.5-0.8) 1; the included angle between the other side of the side riser side wall and the tangent line of the other side of the riser neck 4 is R1, and R1 and D1 satisfy the following formula: r1, D1 (0.4-0.5) and 1; the length of the front waist 8 is L2, and the L2 and D1 satisfy the following formula: l2, D1 (0.5-0.8) and 1.
The side riser sleeve 1 is used for forming a side riser cavity 2 for solidification feeding of a casting to-be-fed area 6. When the sand mold 6 with the position 5 on the lateral side of the casting is in the process of molding (manufacturing the sand mold), the riser bush 1 is placed in the molding mold of the sand mold 6 in advance, the lateral riser bush 1 and the sand mold 6 form an integral sand mold, and then the core assembly is carried out to form a casting cavity for casting. In the casting production process, molten metal enters a cavity of the sand mold through a pouring system. Along with the pouring, the liquid level gradually rises, after the liquid level reaches the side pre-feeding position 5 of the casting cavity, the liquid enters the side riser neck 4 and the cavity of the side riser body 3 through the position 5, and the liquid level continuously rises to finally fill the whole riser and the whole casting. After the mold filling is finished, in the process of solidifying the casting and the riser, as the modulus of the side riser body is higher than that of the area to be fed of the casting, the feeding effect of molten metal in the side riser body on the area to be fed of the riser can be realized, and the side riser neck plays a role of a feeding channel.
The structure inside the side feeder is as shown in fig. 4, and the modulus Mr of the side feeder body 3, the modulus Mn of the side feeder neck 4 and the modulus M of the casting side region to be fed 5 satisfy the relationship that Mr: Mn: M: (1.1-1.2): (0.8-0.9): 1. The modulus design can meet the condition that the solidification time of casting metal liquid in the side riser body 3 is later than that of the side region to be fed 5, can realize feeding of the side riser body 3 to the side region to be fed 5 of the casting through the side riser neck 4, and can realize the compactness and integrity of the structure in the casting at the position 5. The side riser cavity 2 adopts the design that the upper part is small and the lower part is large, so that the volume of a riser can be reduced and the technical yield of products can be improved on the premise of ensuring the modulus of the riser. The streamline design at the bottom of the side riser main body 3 can ensure the stability of molten metal entering the riser, and the reflux impact of the pouring process on the casting cannot be caused. The feeding of the feeder head is under the action of gravity, so the top 7 of the side feeder head body 3 is higher than the height of the thick and large area to be fed on the side of the casting. The included angle of the riser spike waists 8 is designed to be 110 degrees, so that the side riser sleeves 1 can be easily knocked off from the casting side areas 5 in the casting cleaning process.
Example 2
The specific size of the side riser sleeve of the utility model is as shown in fig. 5, the lower part of the riser main body is spherical, the diameter is D1, the value of D1 depends on the size of the thermal node of the casting fed region, in this embodiment, D1 is 100 mm; the relationship between the height H from the geometric center to the top end of the riser and the diameter D1 of the riser body is as follows: h, D1 is equal to 1:1 so as to ensure that the feeder has enough pressure head for feeding, the diameter D2 of the top end of the feeder meets the requirements that D2 is equal to D1 is equal to 0.5:1, the side wall of the feeder is tangent to the lower part of the feeder body, the distance from the center of the feeder body to the feeding area of the casting is L1, and L1 is met: d1 is 1:1, so that the riser has the largest modulus; riser side peak waist length L2 satisfies L2: d1 is 0.6:1, the distance L3 from the peak waist to the casting is 5mm, the included angle of the peak waist is R2 is 110 degrees, the fillet R1 between the riser neck and the upper part of the riser body is 50 degrees, the width L4 of the wedge-shaped groove at the top of the riser is 15mm, the depth L5 of the wedge-shaped groove is 10mm, and the minimum wall thickness of the riser sleeve in each direction is L6 is 15mm, so that the strength of the riser sleeve is ensured. The riser sleeve is shown in figure 1.
Example 3
The diameter of the side riser main body is in the range of 60-140, and the side local feeding of common shell type automobile castings can be met.
According to the utility model discloses a rising head design principle recommends the value of a set of side riser cover sequence and refers to, specifically as follows:
the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (2)
1. A side riser sleeve is characterized by being formed by splicing a left sand mould and a right sand mould which are symmetrical, a side riser cavity (2) is formed inside the side riser sleeve, and the side riser cavity (2) consists of a riser main body (3) and a side riser neck (4); the lower part of the side riser body (3) is spherical, the upper part of the side riser body is a riser side wall, one side of the riser side wall is tangent to the spherical side riser body, the side riser neck (4) is positioned on the right side of the spherical lower part of the side riser body, one side of the side riser neck (4) is tangent to the spherical profile of the lower part of the side riser body, and the other side of the riser side wall is smoothly connected with the other side of the side riser neck (4); a wedge-shaped groove (9) is formed in the top end face (7) of the side wall of the riser; still be provided with sharp-pointed waist (8) between side riser neck (4) and foundry goods feeding area (5) for the riser cover is convenient for knock off in the foundry goods clearance process, and avoids beating and leads to the foundry goods surface to lack the meat behind the riser cover.
2. A side riser sleeve as claimed in claim 1 wherein the diameter of the side riser body (3) is D1, the centre of the side riser body is at a distance H from the riser side wall tip face (7), D1 and H satisfy the following equation: h, D1 is (1-1.4) and 1; the distance between the center of the side riser body (3) and the casting feeding area (5) is L1, and L1 and D1 satisfy the following formula: l1, D1 is (0.8-1.2) 1; the diameter of the top end face of the side feeder side wall is D2, and D2 and D1 satisfy the following formula: d2, D1 is (0.5-0.8) 1; the included angle of the other side of the side riser side wall and the tangent of the other side of the riser neck (4) is R1, and R1 and D1 satisfy the following formula: r1, D1 (0.4-0.5) and 1; the length of the front waist (8) is L2, and the L2 and D1 satisfy the following formula: l2, D1 (0.5-0.8) and 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921925967.5U CN211304684U (en) | 2019-11-07 | 2019-11-07 | Side riser sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921925967.5U CN211304684U (en) | 2019-11-07 | 2019-11-07 | Side riser sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN211304684U true CN211304684U (en) | 2020-08-21 |
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| CN201921925967.5U Active CN211304684U (en) | 2019-11-07 | 2019-11-07 | Side riser sleeve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953493A (en) * | 2021-11-25 | 2022-01-21 | 重庆长征重工有限责任公司 | Heating and heat-insulating riser sleeve |
| CN114535509A (en) * | 2022-02-22 | 2022-05-27 | 株洲九方铸造股份有限公司 | Slant rising head feeding system |
-
2019
- 2019-11-07 CN CN201921925967.5U patent/CN211304684U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953493A (en) * | 2021-11-25 | 2022-01-21 | 重庆长征重工有限责任公司 | Heating and heat-insulating riser sleeve |
| CN114535509A (en) * | 2022-02-22 | 2022-05-27 | 株洲九方铸造股份有限公司 | Slant rising head feeding system |
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