CN218460784U - Casting and pouring system of engine cylinder cover - Google Patents
Casting and pouring system of engine cylinder cover Download PDFInfo
- Publication number
- CN218460784U CN218460784U CN202222246450.1U CN202222246450U CN218460784U CN 218460784 U CN218460784 U CN 218460784U CN 202222246450 U CN202222246450 U CN 202222246450U CN 218460784 U CN218460784 U CN 218460784U
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- casting
- cross gate
- cylinder cover
- gate
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- 238000005266 casting Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 abstract description 10
- 238000005245 sintering Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 241001417092 Macrouridae Species 0.000 abstract 1
- 235000009233 Stachytarpheta cayennensis Nutrition 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model belongs to the technical field of engine cylinder cover casting, in particular to a casting and pouring system of an engine cylinder cover; the method aims to solve the problems that the sand core at the thin part is sintered and blocked after the engine cylinder cover is poured, and the residual sand cannot be removed smoothly; the device comprises a straight pouring bar, a cross gate, a first-level branch cross gate, a second-level branch cross gate, a filter disc, a third-level branch cross gate and an inner gate; two sections of first-level branch cross gates are connected below the cross gate, a section of second-level branch cross gate is connected above each section of first-level branch cross gate, a filter plate is placed below each section of second-level branch cross gate, three sections of cross gates are connected below the filter plates, and two inner gates are connected above each three sections of cross gates; compared with the old casting system, the method can greatly improve the problem of sand core sintering, the waste rate caused by sintering is reduced to be within 4% from 60%, the surface quality of the cast product is excellent, and the defects of sand holes, air holes, floating cores, rat tails and the like are not found. The qualified rate of the casting is improved, and the casting cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the casting of engine cylinder lid, concretely relates to casting gating system of engine cylinder lid.
Background
The engine cylinder cover is an important part of an automobile engine, is connected with a cylinder barrel of a cylinder body, is mainly used for sealing the upper part of the cylinder and is a component of a combustion chamber, and the combustion surface part of the engine cylinder cover is directly contacted with high-temperature and high-pressure fuel gas, so that the engine cylinder cover needs to bear great heat load and mechanical load. The cylinder cover is also provided with an air inlet valve seat, an air outlet valve seat, an air valve guide pipe hole, an air inlet valve, an air outlet valve, an air inlet channel, an air outlet channel and the like. A water jacket is designed in the inner cavity of a cylinder cover of the water-cooled engine around an air inlet channel and an exhaust channel, and circulating anti-freezing cooling liquid is used for cooling high-temperature parts such as a combustion chamber. Good sealing properties and water leakage resistance are also required.
The engine cylinder cover is manufactured by sand casting, and mainly comprises the procedures of core making, molding, melting, pouring, cleaning and the like, and qualified engine cylinder covers can be produced through the procedures. The pouring process of the cylinder cover is divided into two types according to the state of the cylinder cover placed in the sand mold in the pouring process: horizontal casting and vertical casting. And liquid molten iron enters the interior of the sand mold through the pouring system to complete mold filling, and after the mold filling is finished, the molten iron is naturally cooled to form a cylinder cover casting blank. The pouring system is a channel for liquid metal in a casting mold to flow into a cavity, and generally comprises a pouring cup, a sprue pit, a cross runner, an ingate and other units, and mainly has the following functions: the liquid metal is ensured to be stably and reasonably filled in the cavity, the surface and internal quality of the casting is ensured, and the correct design of a pouring system greatly influences the quality of the casting. The pouring system can be divided into a closed pouring system and an open pouring system according to the different section proportion relations of all the components, the closed pouring system can be understood as a pouring system that all the components can be filled with molten metal under the normal pouring condition, and the pressure of the molten metal on all the sections is higher than that of the gas of the mould wall, so that the closed pouring system is a positive pressure system. An open gating system is understood to be a gating system in which the molten metal cannot fill all the constituent elements under normal casting conditions, the gating system is hardly capable of slag-stopping and involves a large amount of entrained gas. The gating system used in the patent is a closed gating system which is fully core-wrapped (a casting structure is completely wrapped inside a sand core), horizontally poured and one-box.
The structure of the pouring system of the existing cylinder cover is shown in figures 1, 2 and 3, and comprises a straight pouring bar 1, a cross runner 2, a first-level branch cross runner 3, a second-level branch cross runner 4, a filter plate 5, a third-level branch cross runner 6 and an inner runner 7. The first-level branch cross gate 3 is provided with two cross gates, the second-level branch cross gate 4 is provided with two cross gates, the third-level branch cross gate 6 is provided with two cross gates, and the ingate 7 is provided with six cross gates. Molten iron flows through the straight pouring bar 1 during pouring, flows through the cross gate 2, moves downwards from the cross gate 2 to the first-level cross gate 3, upwards reaches the filter plate 5 through the second-level cross gate 4, enters the third-level cross gate 6 through filtering, is shunted to the inner gate 7 through the third-level cross gate 6, and enters a sand mold from the bottom of the side face. Although pouring is stable, the slag stopping capacity of the pouring system is also strong, the molten iron of the ingate directly impacts the lower water jacket core of the cylinder cover until the whole pouring process is finished, the water jacket core is invaded by the molten iron in the dynamic impact and cooling heat dissipation processes of the high-temperature molten iron, so that sand is combined with partial molten iron, sintering is formed after cooling, castings are scrapped, and the cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve sintering of thin department psammitolite after the engine cylinder lid pouring, block up, can't drive the problem of incomplete sand smoothly, provide a new gating system.
The technical scheme of the utility model is that: a casting and pouring system of an engine cylinder cover comprises a straight pouring bar, a cross gate, a first-level branch cross gate, a second-level branch cross gate, a filter disc, a third-level branch cross gate and an ingate; the lower part of the cross gate is connected with two sections of first-level branch cross gates, the upper part of each section of first-level branch cross gate is connected with one section of second-level branch cross gate, a filter disc is placed below each section of second-level branch cross gate, the lower part of the filter disc is connected with three sections of cross gates, and the upper part of each three sections of cross gates is connected with two inner gates.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses can greatly improve psammitolite sintering problem for old gating system, the sintering sends the waste rate to fall to within 4% from 60%, and the product surface quality who waters out is excellent moreover, does not discover defects such as sand hole, gas pocket, floating core, rat tail. The qualified rate of the casting is improved, and the casting cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a conventional gating system.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is a schematic structural diagram of the gating system of the present invention.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a right side view of fig. 4.
In the figure: 1-straight pouring bar, 2-horizontal pouring channel, 3-first-level horizontal pouring channel, 4-second-level horizontal pouring channel, 5-filter plate, 6-third-level horizontal pouring channel, 7-inner pouring channel and 8-cylinder cover blank.
Detailed Description
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 these drawings without creative efforts.
As shown in fig. 4, 5 and 6, the casting pouring system of the engine cylinder cover comprises a straight pouring bar 1, a cross runner 2, a first-level branch cross runner 3, a second-level branch cross runner 4, a filter plate 5, a third-level branch cross runner 6 and an inner runner 7; two first-level branch cross runners 3 are connected to the lower portion of the cross runner 2, a second-level branch runner 4 is connected to the upper portion of each first-level branch cross runner 3, a filter plate 5 is placed below each second-level branch runner 4, a third-level branch cross runner 6 is connected to the lower portion of each filter plate 5, and two inner runners 7 are connected to the upper portion of each third-level branch runner 6. The branch runners are arranged in a ladder shape, the ingates are arranged in the middle of the ladder, and liquid molten iron enters the sand cores through the ingates in the middle to form castings. The problem of the sintering of the thin department psammitolite of inner chamber after the current engine cylinder lid is poured, block up, can't clear away the residual sand smoothly is solved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A casting pouring system of an engine cylinder cover comprises a straight pouring bar (1), a cross gate (2), a first-level branch cross gate (3), a second-level branch cross gate (4), a filter plate (5), a third-level branch cross gate (6) and an inner gate (7); the method is characterized in that: the runner (2) below connect two sections one grade of level runners (3), each section one grade of level runner (3) top all connects one section two grade of level runners (4), a slice of cassette filter (5) is placed to each section two grade of level runners (4) below, three grade of level runners (6) are connected to cassette filter (5) below, two ingates (7) are connected to each three grade of level runners (6) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222246450.1U CN218460784U (en) | 2022-08-25 | 2022-08-25 | Casting and pouring system of engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222246450.1U CN218460784U (en) | 2022-08-25 | 2022-08-25 | Casting and pouring system of engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218460784U true CN218460784U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222246450.1U Active CN218460784U (en) | 2022-08-25 | 2022-08-25 | Casting and pouring system of engine cylinder cover |
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| Country | Link |
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| CN (1) | CN218460784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116786764A (en) * | 2023-06-02 | 2023-09-22 | 潍柴动力股份有限公司 | Pouring system and design method of thin-wall split engine cylinder cover |
-
2022
- 2022-08-25 CN CN202222246450.1U patent/CN218460784U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116786764A (en) * | 2023-06-02 | 2023-09-22 | 潍柴动力股份有限公司 | Pouring system and design method of thin-wall split engine cylinder cover |
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