CN207655858U

CN207655858U - Self cleavage formula venting plug and casting mould

Info

Publication number: CN207655858U
Application number: CN201721788474.2U
Authority: CN
Inventors: 戴静
Original assignee: Hua Dong Teksid Automotive Foundry Co Ltd
Current assignee: Hua Dong Teksid Automotive Foundry Co Ltd
Priority date: 2017-12-20
Filing date: 2017-12-20
Publication date: 2018-07-27
Anticipated expiration: 2027-12-20

Abstract

The utility model discloses a kind of self cleavage formula venting plug, the cock body of venting plug is equipped with several air discharge ducts, and air discharge duct and sand core forming surface shape are at an angle, the burr shape and stripping direction generated when sand core demoulds is angled, therefore the effect that a shearing force is formed on the surface of venting plug makes burr not extract directly and is pulled off and stays in air discharge duct, to make burr be detached with sand core, air discharge duct burr is then not present in the sand core obtained in this way.

Description

Self cleavage formula venting plug and casting mould

Technical field

The utility model is related to automobile engine sand core of water jacket casting field, especially a kind of venting plug of casting grinding tool And corresponding casting mould.

Background technology

As shown in Figure 1, the existing frequently-used casting mould in production is all the venting plug of buying traditional form, that is, arrange Air drain 200 is vertical, but finds to go in air discharge duct in forming process for being molded the sand of sand core originally in producing Face can form burr 300 as shown in Figure 2 when then demoulding on sand core, be exactly useless if pouring into cylinder body again Product.

Therefore need a kind of new technical solution to solve the above problems.

Utility model content

The purpose of this utility model is in view of the deficienciess of the prior art, sand core after molding can be avoided by providing one kind There are the venting plugs of air discharge duct burr.

The utility model is also provided that a kind of casting mould, and capable of avoiding sand core after molding, there are air discharge duct burrs.

To achieve the above object, the utility model venting plug adopts the following technical scheme that：

A kind of self cleavage formula venting plug, including cock body, the inner surface of the cock body are sand core forming surface, sand core molding towards Several air discharge ducts are inside recessed with, and air discharge duct and sand core forming surface shape are at an angle.

Advantageous effect：Compared with the background art, the air discharge duct of the venting plug of the utility model makes into gradient, although at Burr is will produce during type, but the burr shape and stripping direction that are generated when sand core demoulds are angled, therefore is being vented The effect that the surface of plug forms a shearing force makes burr that can not directly extract and be pulled off and stay in air discharge duct, to make hair Thorn is detached with sand core, and air discharge duct burr is then not present in the sand core obtained in this way.

The technical solution of the casting mould of the utility model is：With above-mentioned venting plug.

The advantageous effect of the casting mould is identical as the advantageous effect of above-mentioned venting plug, is produced when sand core demoulds Raw burr shape and stripping direction is angled, therefore the effect that a shearing force is formed in the sand core forming surface of venting plug makes hair Thorn can not be extracted directly and be pulled off and stay in air discharge duct, and to make burr be detached with sand core, the sand core obtained in this way is not deposited then In air discharge duct burr.

Description of the drawings

Fig. 1 is the structural schematic diagram of venting plug in the prior art.

Fig. 2 is the sand core structure schematic diagram molded by venting plug shown in Fig. 1.

Fig. 3 is the structural schematic diagram of the utility model self cleavage formula venting plug.

Fig. 4 is the schematic diagram of the utility model self cleavage formula venting plug molding sand core.

Specific implementation mode

In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for Illustrate the utility model rather than limitation the scope of the utility model, after having read the utility model, art technology Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.

Embodiment one：The embodiment of venting plug.

As shown in Figure 3 to Figure 4, the utility model discloses a kind of self cleavage formula venting plug, including cock body 1, the cock body it is interior Surface (and in face of face of sand core) is sand core forming surface 11, which is concaved with several air discharge ducts 12, and arranges Air drain 12 and 11 shape of sand core forming surface are at an angle.In this way, as shown in figure 4,2 shape of burr generated when sand core demoulds Shape is angled with stripping direction, therefore the effect that a shearing force is formed in the sand core forming surface of venting plug makes burr direct It extracts and is pulled off and stays in air discharge duct 12, to make burr be detached with sand core, air discharge duct is then not present in the sand core obtained in this way Burr.

The angle that the air discharge duct is formed with sand core forming surface is acute angle or obtuse angle, can generate above-mentioned shearing Power.The air discharge duct 12 is several, and several air discharge ducts 12 are to be arranged in parallel..In addition, the both sides of the cock body are peace Dress face, mounting surface are equipped with convex block 13, which can generate the effect of similar hangnail, be produced when venting plug being made to be inserted into mold Raw extruding force.

Embodiment two：The embodiment of casting mould.

The casting mould has above-mentioned venting plug, and the same effect for removing flash removed can be generated when being molded sand core Fruit, details are not described herein.

Claims

1. a kind of self cleavage formula venting plug, it is characterised in that：Including cock body, the inner surface of the cock body is sand core forming surface, the sand Core forming surface is concaved with several air discharge ducts, and air discharge duct and sand core forming surface shape are at an angle.

2. self cleavage formula venting plug according to claim 1, it is characterised in that：The air discharge duct is formed with sand core forming surface Angle be acute angle or obtuse angle.

3. self cleavage formula venting plug according to claim 2, it is characterised in that：The both sides of the cock body are mounting surface, peace Dress face is equipped with convex block.

4. self cleavage formula venting plug according to claim 3, it is characterised in that：The air discharge duct is several, and if should Dry air discharge duct is to be arranged in parallel.

5. a kind of casting mould, it is characterised in that：With venting plug according to any one of claim 1 to 4.