CN203578688U - Sand core - Google Patents
Sand core Download PDFInfo
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- CN203578688U CN203578688U CN201320758691.2U CN201320758691U CN203578688U CN 203578688 U CN203578688 U CN 203578688U CN 201320758691 U CN201320758691 U CN 201320758691U CN 203578688 U CN203578688 U CN 203578688U
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- core
- sand core
- sand
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Abstract
The utility model discloses a sand core which is located on a water jacket part between a cylinder sleeve and a housing of a dry type cylinder sleeve machine body, wherein locating parts are arranged at two ends of the sand core, a support clamp is arranged on the sand core, and two ends of the support clamp are embedded in the sand core. According to the sand core, the support clamp playing roles in location and convenience is arranged at the center of the sand core, thus, during casting and core making, due to the support clamp, the sand core is hardly crushed and difficultly deforms so that an internal structure between a cylinder body and the cylinder sleeve is very accurate, the geometric dimension is ensured, and the yield of products is greatly increased.
Description
Technical field
The utility model relates to a kind of lost-foam casting method, is specifically related to a kind of core.
Background technology
Lost foam casting is called again dry sand full mold negative pressure casting, is referred to as EPC abroad, is one of state-of-the-art casting technique in the world at present, is described as once " revolution " in casting history, is referred to as green casting of 21 century both at home and abroad.This method is first made bubble moulding model by technological requirement, be coated with special high-temperature resistant coating, after dry, be placed in special sandbox, by technological requirement, insert dry sand again, utilize three-dimensional vibrating consolidation, vacuumize casting metals liquid under state, now model gasification disappears, molten metal replacement model, copying the foundry goods the same with steeping moulding model. its technological process comprises: make bubble moulding model-composite pouring system-model surface spary special fireproof coating and dry-special interlayer sandbox is placed on three-dimensional vibrating workbench-inserts bed load (dry quartz sand) jolt ramming, strike off-the model type of oven dry is put on bed load, by technological requirement, fill up dry sand, numerical control vibration appropriate time, then strike off case mouth-cover case mouth with plastic sheeting, put cup, starting vacuum system, after the fastening moulding of dry sand, pour into a mould, model type disappears, molten metal replaces its position-release vacuum, by technique mould turnover after foundry goods condensation, from loose quartz sand, take out foundry goods.
When lost foam casting process is produced dry cylinder body, adopt prefabricated core to carry out filling water jacket part, because water jacket is middle without any connection, when making and pouring into a mould, easily there is core distortion.The distortion of core causes the filling of water jacket part unreal, thereby causes molten metal leakage, affects the quality of product.
Utility model content
In order to solve this pitch problems in the middle of water jacket, the utility model employing propclip does one to be stablized, and a kind of core that can prevent core distortion is provided.
To achieve these goals, the technical solution of employing is the utility model:
A kind of core, the water jacket part of described core between cylinder sleeve and the shell of cylinder sleeve body, is characterized in that, the two ends of described core are provided with location division, described in be provided with location division core by coated sand core shooting machine, made; Described core is provided with propclip, and described propclip is metallic support card, comprises a vertical component effect, two parallel portion, and two parallel portion are fixed on respectively the two ends of vertical component effect; Parallel portion is embedded in core; The two ends of vertical component effect are embedded in core, in the middle of it, are exposed in air.
Further, the cross section of described parallel portion is circle or triangle or rectangle, and described vertical component effect is parallel to the radial direction of cylinder barrel.
Further, described metallic support card is irony.
The beneficial effect that the utility model can produce:
(1) propclip of location, convenience effect is set in the center of core, casting and during coremaking due to the existence of propclip, core is difficult for producing fragmentation and metaboly, make the internal structure between cylinder body and cylinder sleeve very accurate, ensure physical dimension, greatly improved the qualification rate of product;
(2) at the two ends of film covered sand core, location core print is set, to its positioning action of core, prevents that it is subjected to displacement;
(3) propclip is arranged on the part without any connection in the middle of core, and after filling with white module by be positioned at Bai Mo adjacent cylinder be connected place, gap, can not cause crimp to the shape of cylinder sleeve.
Accompanying drawing explanation
The structural representation that accompanying drawing 1 is core of the present utility model.
The structural representation that accompanying drawing 2 is support card of the present utility model.
Wherein: 1. core; 21. parallel portion; 22. vertical component effects; 3. location division.
The specific embodiment
In conjunction with Fig. 1,2 explanation present embodiments, a kind of core 1, the water jacket part of this core 1 between cylinder sleeve and the shell of dry cylinder body, Figure 1 shows that the core 1 of four cylinder engine dry cylinder body, the shape of core 1 matches with the shape of body.Owing to manufacturing dry cylinder body in Technology of EPC, because the water jacket part gap between cylinder sleeve and shell is limited, usually cause back-up sand unreal, and cause the molten metal between body and cylinder sleeve to be revealed, cause waste product, and core 1 described in the utility model is arranged on this water jacket part between cylinder sleeve and shell, solved because dry sand is filled the unreal problem that causes waste product.The shape of core 1 and the herein shape of water jacket part match.The two ends of described core 1 are provided with location division 3; In described core 1, be provided with propclip, the two ends of described propclip are embedded in core 1, and intermediate portion is positioned at the middle position without any connection of water jacket.
Described support card is metallic support card.
The described core 1 that is provided with location division 3 is made by coated sand core shooting machine.Location division 3 is also made by precoated sand, and with core 1 one, location division 3 is not only positioned at water jacket part by film covered sand core 1, and when after adhesive gasification in film covered sand core 1, location division 3 also becomes sand flows out from fabrication hole, need not clear up.
Described propclip comprises that a vertical component effect 21, two 22, two parallel portion 22 of parallel portion are separately fixed at the two ends of vertical component effect 21; Parallel portion 22 is embedded in core 1; The two ends of vertical component effect 21 are embedded in core 1, in the middle of it, are exposed in air.Vertical component effect 21 is positioned at the place, connection gap of white mould adjacent cylinder.
The cross section of described parallel portion 22 is circle or triangle or rectangle.
Described vertical component effect 21 is parallel to the radial direction of cylinder barrel.
Described metallic support card is irony.In casting process, metallic support card impregnates in the molten metal of high temperature and combines together with molten metal.
The method of manufacturing the lost foam casting dry cylinder body core 1 described in above-mentioned arbitrary technical scheme, is placed on support card in core 1 mould of coated sand core shooting machine, in core 1 mould, injects precoated sand.
Described precoated sand is sand in coating phenolic resin.
Because the body of dry cylinder body has a built-in hollow water jacket for water circulation, be used for to engine cooling, therefore this hollow water jacket dry sand in common law back-up sand may fill hardly, namely hollow water jacket cannot form according to the set shape of evaporative pattern cast model, causes waste product.In order to solve the unreal waste product causing of back-up sand, the hollow water jacket part of the utility model between shell and the cylinder sleeve of the white mould of dry cylinder body arranges core 1, the white mould of cylinder sleeve can insert the inner space 4 of film covered sand core 1, be close together closely with the inwall of core 1, the shell Bai Moyanbaimo medium line of dry cylinder body is divided into outer white mould I, outer white mould II two parts, be close together closely with the outer wall of core 1, each several part adopts conventional gluing form by words spoken by an actor from offstage mould, outer white mould I, outer white mould II three parts stick together, the core 1 that precoated sand is made after pouring molten iron becomes the dry sand being scattered, can be from reserved entering, delivery port and reserved fabrication hole are poured out, formed the hollow jacket space of core 1 shape, as long as make the shape of core 1 according to the shape of hollow water jacket, just can solve that back-up sand is unreal has caused the problem of waste product.Fabrication hole can be spread plug with water blocking when product turnout.
When making and pouring into a mould, due to the existence of propclip, by place, the inner cylinder hole supporting & stablizing of core.When making core 1, support card is placed on the mould of making core, to inject after precoated sand, support card is bumped in core and plays fixation, prevents from without any coupling part, being extruded distortion in the middle of core; And when pouring metal melt, support card is fixed without the both sides of any coupling part in the middle of supporting core, while pouring into Bai Mo gasification due to molten metal, core does not also become dry sand for some time, support card supports water jacket part when molten metal is liquid, the now existence of support card can help to bear the impulse force that casting of molten metal causes, and prevents core crimp.Adopt the utility model casting dry cylinder body, product qualified rate can improve 120%.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (3)
1. a core, the water jacket part of described core between cylinder sleeve and the shell of cylinder sleeve body, is characterized in that, the two ends of described core are provided with location division, described in be provided with location division core by coated sand core shooting machine, made; Described core is provided with propclip, and described propclip is metallic support card, comprises a vertical component effect, two parallel portion, and two parallel portion are fixed on respectively the two ends of vertical component effect; Parallel portion is embedded in core; The two ends of vertical component effect are embedded in core, in the middle of it, are exposed in air.
2. a kind of core according to claim 1, is characterized in that, the cross section of described parallel portion is circle or triangle or rectangle, and described vertical component effect is parallel to the radial direction of cylinder barrel.
3. a kind of core according to claim 1, is characterized in that, described metallic support card is irony.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758691.2U CN203578688U (en) | 2013-11-27 | 2013-11-27 | Sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758691.2U CN203578688U (en) | 2013-11-27 | 2013-11-27 | Sand core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203578688U true CN203578688U (en) | 2014-05-07 |
Family
ID=50576663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320758691.2U Expired - Fee Related CN203578688U (en) | 2013-11-27 | 2013-11-27 | Sand core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203578688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855474A (en) * | 2016-04-08 | 2016-08-17 | 宁夏共享模具有限公司 | Anti-deformation method for thin-wall type cylinder mold |
| CN107084127A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of loading machine pumping valve body and its casting method |
-
2013
- 2013-11-27 CN CN201320758691.2U patent/CN203578688U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855474A (en) * | 2016-04-08 | 2016-08-17 | 宁夏共享模具有限公司 | Anti-deformation method for thin-wall type cylinder mold |
| CN105855474B (en) * | 2016-04-08 | 2018-05-22 | 宁夏共享模具有限公司 | A kind of thin wall body die anti-deformation method |
| CN107084127A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of loading machine pumping valve body and its casting method |
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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: 20140507 Termination date: 20151127 |