CN203711758U - Lower core-pulling casting structure of aluminum piston - Google Patents
Lower core-pulling casting structure of aluminum piston Download PDFInfo
- Publication number
- CN203711758U CN203711758U CN201320871998.3U CN201320871998U CN203711758U CN 203711758 U CN203711758 U CN 203711758U CN 201320871998 U CN201320871998 U CN 201320871998U CN 203711758 U CN203711758 U CN 203711758U
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- combustion chamber
- sprue
- cross gate
- lower core
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Abstract
The utility model discloses a lower core-pulling casting structure of an aluminum piston. The lower core-pulling casting structure comprises a sprue, a cross gate and cavities which are arranged at two ends of the cross gate in a mirror symmetry manner, wherein a combustion chamber molding pit is arranged in each cavity; a top riser is arranged above the edge of each combustion chamber molding pit. The sprue is of an S-shaped bent structure as improvement of the technical scheme. By adopting the lower core-pulling casting structure of the aluminum piston disclosed by the utility model, the production efficiency can be improved, and the production cost is reduced. The combustion chamber is molded in a casting manner, so that not only is aluminum product consumption reduced relatively to coarse and fine molding of machining and the utilization rate of the aluminum product improved, but also the time for coarsely molding the combustion chamber in a machining manner is saved. Thus, the production efficiency is improved, the filter net is concealed, and the consumption of auxiliary materials is reduced.
Description
Technical field
The utility model relates to the cast structure of loosing core under a kind of aluminium piston, belongs to engine piston casting technology field.
Background technology
In prior art, the cast structure that the casting technique of loosing core under aluminium piston adopts conventionally as shown in Figure 1, by sprue, cross gate and two die cavities being positioned at cross gate two ends, formed, wherein the junction of sprue and cross gate is also provided with screen pack, the top center place of two die cavities is provided with top riser, make the body that foundry goods occurs in cooling and process of setting shrink and can constantly be supplemented, thereby prevent from occurring shrinkage cavity and porosity in foundry goods, in addition have concurrently give vent to anger, scum silica frost effect, to guarantee castability.Complete after above-mentioned casting, also need by the combustion chamber moulding that machined is thick, finish turning makes aluminium piston, final finished as shown in Figure 2.The weak point of above-mentioned technique is that manufacturing procedure is more, not only need casting also to need that machined is thick, finish turning moulding, so production efficiency is lower, and production cost is higher; In addition, the mode that piston-top surface combustion chamber adopts the thick finish turning moulding of machined, inevitably can cause the loss of aluminium, thereby make above-mentioned technique improve aluminium consumption amount.
Utility model content
The deficiency that the utility model exists for prior art just, provides the cast structure of loosing core under a kind of aluminium piston, can reduce the consumption of aluminium, improves the utilization rate of aluminium, and improves the production and processing efficiency of aluminium piston, meets actual operation requirements.
For addressing the above problem, technical solution adopted in the utility model is as follows:
The cast structure of loosing core under a kind of aluminium piston, comprise: sprue, cross gate and be positioned at two of cross gate two ends and be the die cavities that Mirror Symmetry arranges, described in each, die cavity is provided with combustion chamber moulding depression, and described in each, the top, edge of combustion chamber moulding depression is provided with top riser.
As the improvement of technique scheme, described sprue has S shape warp architecture.
As the improvement of technique scheme, described top riser is arranged at described combustion chamber moulding depression near the edge of described sprue one side.Described structure furthers the distance of top riser and sprue, thereby is beneficial to the heating of top riser, to fall the energy consumption of few heating top riser.
As the improvement of technique scheme, described in each, in combustion chamber moulding depression, be provided with secondary rising head.Secondary rising head is set and makes the body that combustion chamber occurs in cooling and solidification forming process shrink and can constantly be supplemented, thereby prevent from occurring shrinkage cavity and porosity in combustion chamber, have in addition scum silica frost effect concurrently, to guarantee the castability of combustion chamber.
As the improvement of technique scheme, described in each, in combustion chamber moulding depression, be provided with secondary rising head, between described cross gate and described die cavity, be also provided with ingate, between described ingate and described cross gate, be also provided with storage cavity.Described structure can guarantee that castable evenly flows in die cavity, and can avoid foundry goods inside to occur shrinkage cavity and porosity phenomenon.
Improvement as technique scheme, described sprue is according to being divided into successively upper sprue and two parts of lower sprue highly from top to bottom, described storage cavity is divided into outside storage cavity and two parts of inner side storage cavity according to the distance distance with described sprue, described outside storage cavity connects described ingate, described inner side storage cavity connects described cross gate, and described die cavity is according to being divided into successively upper impression, middle die cavity and three parts of lower impressions highly from top to bottom;
The setting time of described upper sprue, described cross gate and described inner side storage cavity is 120～170 seconds, the setting time of described top riser and described outside storage cavity is 80～140 seconds, the setting time of described upper impression and described ingate is 30～100 seconds, the setting time of described middle die cavity is 10～40 seconds, and the setting time of described lower impressions and described secondary rising head is 1～15 second.Described solidification sequence can improve the castability of aluminium piston, and described solidification sequence has advantages of that production efficiency is high.
Compared with prior art, implementation result of the present utility model is as follows for the utility model:
The cast structure of loosing core under a kind of aluminium piston described in the utility model, is shifted top riser with respect to prior art, directly by combustion chamber casting; By adopting the current stabilization casting process of S shape sprue, thereby can cancel screen pack; Adopt the structure of a mould two-chamber.Above-mentioned improved advantage is to enhance productivity and to reduce production costs: because combustion chamber is casting,, finish turning moulding thick with respect to machined not only reduced aluminium consumption, improved aluminium utilization rate, and saved the time of the rough turn combustion chamber of machined operation, thereby improved production efficiency; Cancel screen pack, reduced auxiliary material consumption.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of cast structure of loosing core under aluminium piston of the prior art;
Fig. 2 is aluminium piston finished product structural representation;
Fig. 3 is the schematic diagram of looking squarely of cast structure of loosing core under a kind of aluminium piston described in the utility model;
Fig. 4 is the schematic top plan view of cast structure of loosing core under a kind of aluminium piston described in the utility model;
Fig. 5 is the structural representation of A-A section in Fig. 3;
Fig. 6 is the cast structure solidification sequence schematic diagram of loosing core under a kind of aluminium piston described in the utility model.
The specific embodiment
Content of the present utility model is described below in conjunction with specific embodiments.
As shown in Figures 3 to 6, be the cast structure structural representation of loosing core under a kind of aluminium piston described in the utility model.The cast structure of loosing core under a kind of aluminium piston described in the utility model, comprise: sprue 1, cross gate 2 and be positioned at two of cross gate 2 two ends and be the die cavities 3 that Mirror Symmetry arranges, described in each, die cavity 3 is provided with combustion chamber moulding depression 4, and described in each, the top, edge of combustion chamber moulding depression 4 is provided with top riser 5.Particularly, described sprue 1 has S shape warp architecture; Described top riser 5 is arranged at moulding depression 4 edges near described sprue 1 one sides, described combustion chamber; Described in each, in combustion chamber moulding depression 4, be provided with secondary rising head 6.
Further with improvement, described in each, in combustion chamber moulding depression 4, be provided with secondary rising head 6, between described cross gate 2 and described die cavity 3, be also provided with ingate 7, between described ingate 7 and described cross gate 2, be also provided with storage cavity 8.Described sprue 1 is according to being divided into successively upper sprue 11 and 12 two parts of lower sprue highly from top to bottom, described storage cavity 8 is divided into outside storage cavity 81 and 82 two parts of inner side storage cavity according to the distance distance with described sprue 1, described outside storage cavity 81 connects described ingate 7, described inner side storage cavity 82 connects described cross gate 2, and described die cavity 3 is according to being divided into successively upper impression 31, middle die cavity 32 and 33 3 parts of lower impressions highly from top to bottom; Concrete solidification sequence is: the setting time of described upper sprue 11, described cross gate 2 and described inner side storage cavity 82 is 120～170 seconds, the setting time of described top riser 5 and described outside storage cavity 81 is 80～140 seconds, the setting time of described upper impression 31 and described ingate 7 is 30～100 seconds, the setting time of described middle die cavity 32 is 10～40 seconds, and the setting time of described lower impressions 33 and described secondary rising head 6 is 1～15 second.
Above content is the detailed description of in conjunction with specific embodiments the utility model being done, and can not assert that the concrete enforcement of the utility model only limits to these explanations.For the utility model person of ordinary skill in the field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to the scope of the utility model protection.
Claims (5)
1. the cast structure of loosing core under an aluminium piston, comprise: sprue (1), cross gate (2) and be positioned at two of cross gate (2) two ends and be the die cavities (3) that Mirror Symmetry arranges, it is characterized in that, die cavity described in each (3) is provided with combustion chamber moulding depression (4), and described in each, top, the edge of combustion chamber moulding depression (4) is provided with top riser (5).
2. the cast structure of loosing core under a kind of aluminium piston as claimed in claim 1, is characterized in that, described sprue (1) has S shape warp architecture.
3. the cast structure of loosing core under a kind of aluminium piston as claimed in claim 1 or 2, is characterized in that, described top riser (5) is arranged at described combustion chamber moulding depression (4) near edge of described sprue (1) one side.
4. the cast structure of loosing core under a kind of aluminium piston as claimed in claim 1 or 2, is characterized in that, described in each, in combustion chamber moulding depression (4), is provided with secondary rising head (6).
5. the cast structure of loosing core under a kind of aluminium piston as claimed in claim 3, it is characterized in that, described in each, in combustion chamber moulding depression (4), be provided with secondary rising head (6), between described cross gate (2) and described die cavity (3), be also provided with ingate (7), between described ingate (7) and described cross gate (2), be also provided with storage cavity (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871998.3U CN203711758U (en) | 2013-12-27 | 2013-12-27 | Lower core-pulling casting structure of aluminum piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871998.3U CN203711758U (en) | 2013-12-27 | 2013-12-27 | Lower core-pulling casting structure of aluminum piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203711758U true CN203711758U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871998.3U Expired - Fee Related CN203711758U (en) | 2013-12-27 | 2013-12-27 | Lower core-pulling casting structure of aluminum piston |
Country Status (1)
| Country | Link |
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| CN (1) | CN203711758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736925A (en) * | 2013-12-27 | 2014-04-23 | 安徽省恒泰动力科技有限公司 | Downward core-pulling casting structure of aluminum piston |
-
2013
- 2013-12-27 CN CN201320871998.3U patent/CN203711758U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736925A (en) * | 2013-12-27 | 2014-04-23 | 安徽省恒泰动力科技有限公司 | Downward core-pulling casting structure of aluminum piston |
| CN103736925B (en) * | 2013-12-27 | 2015-11-04 | 安徽省恒泰动力科技有限公司 | To loose core under a kind of aluminium recovery cast structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20141227 |
|
| EXPY | Termination of patent right or utility model |