CN216263340U - Large-scale aluminum piston single-body die - Google Patents
Large-scale aluminum piston single-body die Download PDFInfo
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- CN216263340U CN216263340U CN202122164388.7U CN202122164388U CN216263340U CN 216263340 U CN216263340 U CN 216263340U CN 202122164388 U CN202122164388 U CN 202122164388U CN 216263340 U CN216263340 U CN 216263340U
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Abstract
The utility model provides a large aluminum piston single-body die, and relates to the technical field of piston casting dies. The large aluminum piston single-body die comprises a single-body die body (1); the single-body mould body (1) is of a cylindrical structure, the top of the single-body mould body (1) is provided with a hemispheroid structure, and the bottom of the single-body mould body is provided with a base (103); a support table (104) is arranged in the middle of the single-body die body (1); a first cooling pipeline (101) and a second cooling pipeline (102) are arranged in the single-body die body (1); the base (103) is of a cake-shaped structure. According to the utility model, the cooling pipeline II is arranged in the single-body mould body close to the pouring gate, and the cooling liquid is introduced into the cooling pipeline, so that the temperature at the pouring gate can be quickly reduced, the feeding time of piston pouring is shortened, the piston casting production efficiency is improved, and the technical problem that the skirt part of the piston and the edge groove tissue of the piston are loosened due to insufficient feeding is solved.
Description
Technical Field
The utility model relates to the technical field of piston casting molds, in particular to a large aluminum piston single-body mold.
Background
The piston is one of the core components of the internal combustion engine, performs reciprocating linear motion in the cylinder, outputs mechanical energy through a connecting rod and a crankshaft flywheel mechanism, and has important influence on the engine and the performance of the whole engine. At present, pistons produced in China generally adopt aluminum-silicon alloy materials, and blanks are formed by gravity casting. Along with the improvement of parameters such as engine power, supercharging load, reciprocating high speed and the like, the piston mainly adopts a wear-resistant insert ring and an inner cooling oil duct structure, and in order to improve the structural strength of the piston and reduce the local stress concentration phenomenon, the structural design of the inner cavity of the piston is smooth as much as possible, so that the piston casting mold is required to adopt a single-body structure as much as possible.
At the present stage, the piston inner cooling oil duct is formed by wrapping a high-temperature salt core which is arranged on a die by aluminum water for pouring a piston blank, and a cavity after the salt core is dissolved is the piston inner cooling oil duct; in order to ensure the size and shape of the cooling oil duct in the piston, the salt core is baked to 500-600 ℃ and then is installed on a die; because of the influence of high temperature salt core, the aluminium water high temperature of piston runner mouth position, the mould only has the center to lead to water cooling, and the mould cooling effect is relatively poor, and is big to large-scale piston heat capacity itself, and the cooling is slow, and the thermal-centre circle diameter of arris groove runner position is great simultaneously, appears the tissue shrinkage porosity defect easily in this department, in order to solve the casting defect problem of casting aluminium piston, needs to follow mould structural design and casting process and begin to solve in the aspect of.
In patent CN201921577918.7, an exhaust structure is disclosed, comprising an inner mold and a salt core supporting rod extending from the salt core supporting hole of the inner mold, wherein the inner mold is provided with a plurality of exhaust grooves communicated with the salt core supporting hole, and the exhaust grooves are arranged to extend along the length direction of the salt core supporting hole. This patent also discloses a piston casting mold. The exhaust structure reserves a special exhaust passage by processing the exhaust groove, eliminates the flashes near the oil inlet and outlet holes of the piston blank, improves the exhaust reliability and the production efficiency inside the cavity of the piston casting die, and reduces the rejection rate during casting operation and the working difficulty of subsequent procedures.
In patent CN201820849728.5, a motor casing casting feeding mold is disclosed, which includes a mold base, and a bottom mold disposed inside the mold base and cooperating with the mold base, wherein a mold cavity is disposed in the center of the mold base, a sealing plate is disposed above the mold base, a casting hole is disposed in the center of the sealing plate, a limiting groove is disposed on the lower surface of the mold base, the bottom mold includes a base and a mold post connected above the base, the mold post is disposed in the mold cavity, a casting head is disposed in the center of the mold post, a diversion channel communicated with the casting head is disposed on the upper surface of the mold post, a diversion channel communicated with the diversion channel is disposed on the outer surface of the mold post, a feeding channel and a blind riser are disposed on the surface of the base, and the blind riser is disposed at least two and surrounds the outer side of the mold post; this motor casing casting feeding mould person of facilitating the use casts the production with the product, has avoided the problem of the shrink deformation that probably appears after the product casting is accomplished, the effectual product casting efficiency and the production quality that has improved.
The patent CN201210032568.2 discloses a piston ring precision casting mould and casting process, a piston ring precision casting mould, includes mount, dead head and mould piece and constitutes, the mount by bolted connection, be located the mould piece outside, the mould piece by main watering way, divide water and have four mould die cavities at least and constitute, mould die cavity uses main watering to water and to water the UNICOM through dividing watering way and main, the mould piece is box alignment and folds inside the mount, the dead head is located the mount top and waters the UNICOM in the main of mould piece. This patent can make full use of prior casting equipment and instrument carry out batch production to directly produce piston ring monomer through the casting, the effectual waste that reduces all kinds of materials, very big reduction workman intensity of labour, improve production efficiency, reduced manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a large aluminum piston single-body die. Through this internal cooling tube two that sets up near the gate of solitary body mould, and to this cooling tube two-way entering coolant liquid, can reduce the temperature of gate department fast, and make this physical stamina of solitary body mould absorb the heat at the big position of piston skirt section and piston edge groove uniform thickness fast, make the big position of piston skirt section and piston edge groove uniform thickness can solidify fast, make solitary body mould body, piston skirt section, form great temperature gradient between gate and the side rising head, thereby accord with the casting order and solidify the principle, guarantee the feeding demand of side rising head to piston skirt section and piston edge groove uniform thickness big position, the feeding time of the piston pouring can be shortened simultaneously, piston casting production efficiency is improved. The technical problem of loosening defects of piston skirt portions and piston edge groove tissues caused by insufficient feeding is solved.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a large-scale aluminium piston list body mould, includes list body mould body, wherein:
the single-body mould body is of a cylindrical structure, the top of the single-body mould body is provided with a hemispheroid structure, and the bottom of the single-body mould body is provided with a base;
a support table is arranged in the middle of the single-body die body;
a cooling pipeline I and a cooling pipeline II are arranged in the single-body die body;
the base is of a cake-shaped structure.
Optionally or preferably, the single-body die body is matched with a blank structure, and the blank structure is arranged at the top of the single-body die body;
the blank structure comprises a top dead head, an oil duct salt core, a piston cavity, a piston skirt part, a piston edge groove, a side dead head and a pouring gate;
the first cooling pipeline and the second cooling pipeline are both of blind hole structures which are vertically arranged;
the first cooling pipeline and the second cooling pipeline are both arranged at the bottom of the base and extend into the hemispherical structure at the top of the independent die body;
the cooling pipeline is positioned at the axle center of the independent die body;
and the two cooling pipelines are positioned in the independent mould body and close to the sprue.
Optionally or preferably, a plurality of cooling short pipes are further arranged in the base, and two base pipelines respectively communicated with the first cooling pipeline and the second cooling pipeline are formed in the base.
Optionally or preferably, the base is further provided with a plurality of threaded holes.
Optionally or preferably, both ends of each base pipe are provided with a seal.
Based on the technical scheme, the following technical effects can be generated:
the large aluminum piston single-body die provided by the utility model is suitable for connection among multi-stage perforating guns. The beneficial effects of the utility model include:
(1) according to the utility model, the cooling pipeline II is arranged in the independent die body close to the sprue, and cooling liquid is introduced into the cooling pipeline II, so that the temperature at the sprue can be quickly reduced;
(2) according to the utility model, a relatively large temperature gradient is formed among the single-body mould body, the piston skirt part, the pouring gate and the side riser, so that the casting sequential solidification principle is met;
(3) the feeding device can meet the feeding requirement of the side feeder on the parts with the same thickness and the same size of the piston skirt part and the piston edge groove, and avoid the loosening defect of the piston skirt part and the piston edge groove;
(4) the utility model can quickly solidify the piston skirt part and the piston edge groove with the same thickness, thereby shortening the feeding time of piston pouring and improving the piston casting production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a front view (semi-sectional view) of the structure of a single-piece mold of the present invention;
FIG. 2 is a front structural view (in cross-section) of the blank structure of the present invention;
FIG. 3 is a schematic illustration of the installation of the present invention (semi-sectional view);
FIG. 4 is a bottom view of the base of the present invention;
FIG. 5 is a cross-sectional view taken from perspective A-A of a base of the present invention;
FIG. 6 is a cross-sectional view from perspective B-B of the base of the present invention;
in the figure: 1-a single-body mould body, 101-a cooling pipeline I, 102-a cooling pipeline II, 103-a base, 104-a supporting table, 2-a blank structure, 201-a top riser, 202-an oil channel salt core, 203-a piston cavity, 204-a piston skirt, 205-a piston edge groove, 206-a side riser and 207-a sprue.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the utility model provides a large-scale aluminum piston single-body die, which comprises a single-body die body 1, wherein:
the single-body mould body 1 is of a cylindrical structure, the top of the single-body mould body 1 is provided with a hemispheroid structure, and the bottom of the single-body mould body is provided with a base 103;
a support table 104 is arranged in the middle of the single-body die body 1;
a first cooling pipeline 101 and a second cooling pipeline 102 are arranged in the single-body die body 1;
the base 103 is of a pie-shaped structure.
In this embodiment, the single-body die body 1 is used in cooperation with the blank structure 2, and the blank structure 2 is arranged at the top of the single-body die body 1;
the blank structure 2 comprises a top dead head 201, an oil passage salt core 202, a piston cavity 203, a piston skirt 204, a piston edge groove 205, a side dead head 206 and a pouring gate 207;
the first cooling pipeline 101 and the second cooling pipeline 102 are both of blind hole structures which are vertically arranged;
the first cooling pipeline 101 and the second cooling pipeline 102 are both arranged at the bottom of the base 103 and extend into the hemispherical structure at the top of the independent die body 1;
the first cooling pipeline 101 is positioned at the axis of the single-body die body 1;
the second cooling duct 102 is located in the single-piece mold body 1 near the gate 207.
In this embodiment, a plurality of cooling short pipes are further disposed in the base 103, and two base pipes respectively communicated with the first cooling pipe 101 and the second cooling pipe 102 are formed in the base 103.
In this embodiment, the base 103 is further provided with a plurality of threaded holes.
In this embodiment, each of the two ends of the base pipe is provided with a sealing member.
The embodiment has the following advantages:
(1) according to the utility model, the second cooling pipeline 102 is arranged in the single-body mould body 1 close to the sprue 207, and cooling liquid is introduced into the second cooling pipeline 102, so that the temperature at the sprue 207 can be quickly reduced;
(2) according to the utility model, a relatively large temperature gradient is formed among the single-body mould body 1, the piston skirt 204, the pouring gate 207 and the side riser 206, so that the casting sequence solidification principle is met;
(3) the utility model can ensure the feeding requirement of the side riser 206 on the parts with the same thickness and the large thickness, such as the piston skirt 204 and the piston edge groove 205, and avoid the loosening defect of the piston skirt 204 and the piston edge groove 205;
(4) the utility model can quickly solidify the piston skirt 204 and the piston edge groove 205 with the same thickness, thereby shortening the feeding time of piston pouring and improving the piston casting production efficiency.
Example 2:
as shown in fig. 1-6:
the utility model provides a large-scale aluminum piston single-body die, which comprises a single-body die body 1, wherein:
the single-body mould body 1 is of a cylindrical structure, the top of the single-body mould body 1 is provided with a hemispheroid structure, and the bottom of the single-body mould body is provided with a base 103;
a support table 104 is arranged in the middle of the single-body die body 1;
a first cooling pipeline 101 and a second cooling pipeline 102 are arranged in the single-body die body 1;
the base 103 is of a pie-shaped structure.
In this embodiment, the single-body die body 1 is used in cooperation with the blank structure 2, and the blank structure 2 is arranged at the top of the single-body die body 1;
the blank structure 2 comprises a top dead head 201, an oil passage salt core 202, a piston cavity 203, a piston skirt 204, a piston edge groove 205, a side dead head 206 and a pouring gate 207;
the first cooling pipeline 101 and the second cooling pipeline 102 are both of blind hole structures which are vertically arranged;
the first cooling pipeline 101 and the second cooling pipeline 102 are both arranged at the bottom of the base 103 and extend into the hemispherical structure at the top of the independent die body 1;
the first cooling pipeline 101 is positioned at the axis of the single-body die body 1;
the second cooling duct 102 is located in the single-piece mold body 1 near the gate 207.
In this embodiment, a plurality of cooling short pipes are further disposed in the base 103, and two base pipes respectively communicated with the first cooling pipe 101 and the second cooling pipe 102 are formed in the base 103.
In this embodiment, the base 103 is further provided with a plurality of threaded holes.
In this embodiment, two ends of each base pipeline are provided with rubber sealing plugs.
In this embodiment, the diameter and the length of the first cooling pipe 101 are both greater than the diameter and the length of the second cooling pipe 102.
In this embodiment, the base pipeline communicated with the second cooling pipeline 102 is an L-shaped pipeline.
The embodiment has the following advantages:
(1) according to the utility model, the second cooling pipeline 102 is arranged in the single-body mould body 1 close to the sprue 207, and cooling liquid is introduced into the second cooling pipeline 102, so that the temperature at the sprue 207 can be quickly reduced;
(2) according to the utility model, a relatively large temperature gradient is formed among the single-body mould body 1, the piston skirt 204, the pouring gate 207 and the side riser 206, so that the casting sequence solidification principle is met;
(3) the utility model can ensure the feeding requirement of the side riser 206 on the parts with the same thickness and the large thickness, such as the piston skirt 204 and the piston edge groove 205, and avoid the loosening defect of the piston skirt 204 and the piston edge groove 205;
(4) the utility model can quickly solidify the piston skirt 204 and the piston edge groove 205 with the same thickness, thereby shortening the feeding time of piston pouring and improving the piston casting production efficiency.
The working process of the utility model is as follows:
the cooling water is continuously introduced into the first cooling pipeline 101 in the center of the single-body die body 1, the cooling water is discontinuously introduced into the second cooling pipeline 102, the water is flushed and cooled after the aluminum water is poured, and the cooling water is closed 30-80 seconds before the feeding time is finished, so that the single-body die body 1 absorbs heat and returns to the temperature in the state of being wrapped by the blank structure 2, and the temperature of the blank structure 2 is still 230-280 ℃ when the next piston blank is poured.
Claims (5)
1. The utility model provides a large-scale aluminum piston single-body mould which characterized in that: including solitary mould body (1), wherein:
the single-body mould body (1) is of a cylindrical structure, the top of the single-body mould body (1) is provided with a hemispheroid structure, and the bottom of the single-body mould body is provided with a base (103);
a support table (104) is arranged in the middle of the single-body die body (1);
a first cooling pipeline (101) and a second cooling pipeline (102) are arranged in the single-body die body (1);
the base (103) is of a cake-shaped structure.
2. The single-body mold for large aluminum pistons according to claim 1, wherein: the single-body die body (1) is matched with a blank structure (2) for use, and the blank structure (2) is arranged at the top of the single-body die body (1);
the blank structure (2) comprises a top dead head (201), an oil duct salt core (202), a piston cavity (203), a piston skirt portion (204), a piston edge groove (205), a side dead head (206) and a pouring gate (207);
the first cooling pipeline (101) and the second cooling pipeline (102) are both of blind hole structures which are vertically arranged;
the first cooling pipeline (101) and the second cooling pipeline (102) are both arranged at the bottom of the base (103) and extend into the hemispherical structure at the top of the independent die body (1);
the first cooling pipeline (101) is positioned at the axis of the single-body die body (1);
the second cooling pipeline (102) is positioned in the single-body mould body (1) close to the sprue (207).
3. The single-body mold for large aluminum pistons according to claim 1, wherein: a plurality of cooling short pipes are further arranged in the base (103), and two base pipelines which are respectively communicated with the first cooling pipeline (101) and the second cooling pipeline (102) are formed in the base (103).
4. The single-body mold for large aluminum pistons according to claim 1, wherein: the base (103) is also provided with a plurality of threaded holes.
5. The single-body mold for large aluminum pistons according to claim 3, wherein: and sealing parts are arranged at two ends of each base pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164388.7U CN216263340U (en) | 2021-09-08 | 2021-09-08 | Large-scale aluminum piston single-body die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164388.7U CN216263340U (en) | 2021-09-08 | 2021-09-08 | Large-scale aluminum piston single-body die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216263340U true CN216263340U (en) | 2022-04-12 |
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ID=81063189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122164388.7U Active CN216263340U (en) | 2021-09-08 | 2021-09-08 | Large-scale aluminum piston single-body die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216263340U (en) |
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2021
- 2021-09-08 CN CN202122164388.7U patent/CN216263340U/en active Active
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