KR101583965B1

KR101583965B1 - Apparatus for prevention injecting molten metals into pipe during casting for cast with pipe

Info

Publication number: KR101583965B1
Application number: KR1020140105319A
Authority: KR
Inventors: 강문구; 정태호; 윤형섭; 윤광민
Original assignee: 현대자동차주식회사; 기아자동차주식회사
Priority date: 2014-08-13
Filing date: 2014-08-13
Publication date: 2016-01-08

Abstract

The present invention relates to an apparatus for preventing molten metal in an inter-casting pipe to prevent the molten metal from flowing into the pipe between die casting castings into which the pipe is inserted.
The present invention relates to an apparatus for preventing molten metal in a pipe between castings of a casting into which a pipe having an open end is inserted, the apparatus comprising: a stopper member for opening and closing an end of the pipe; And an elastic member that pulls the stopper member with an elastic force such that the stopper member closes both opened ends of the pipe.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an apparatus for preventing mixing of molten metal in a casting pipe,

The present invention relates to an apparatus for preventing molten metal in a pipe between castings, and more particularly, to an apparatus for preventing molten steel from intermixing a casting molten metal to prevent molten metal from flowing into the pipe between diecasting castings inserted into the pipe.

In order to cast a product with inserted pipe (STSM 12 ~ 18, STS 301 ~ 406, or AI 1070 ~ AI 7178), it is necessary to cover both ends of the pipe After that, it should be fixed to the mold.

Otherwise, the molten metal is mixed into the inside of the pipe between castings, resulting in a product failure.

To prevent this, conventional methods for closing both ends of a pipe are to weld both ends of the pipe by welding or using a press.

In this conventional method, there is added a work of welding or pressing in the casting for inserting a pipe, and the necessity of post-processing (machining / erasing) both ends of the processed pipe in order to maintain the pipe shape of the cast product have.

Korean Patent Publication No. 2000-0046421 discloses a structure in which a plug is inserted and installed at the tip of a pipe in order to prevent the molten metal from being mixed into the main pipe in the prior art.

However, the method of Japanese Patent Application No. 2000-0045421 does not provide a solution for removing the plug to maintain the shape of the pipe, which is a problem in that it is not suitable for casting the inserted product.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an apparatus for preventing molten metal in a casting pipe from being held in a pipe shape while casting a product into which the pipe is inserted without machining, welding, will be.

In order to accomplish the above object, according to the present invention, there is provided an apparatus for preventing molten metal in a pipe from being intermixed with a molten metal, And an elastic member provided inside the pipe and connected to the plug member to pull the plug member with an elastic force such that the plug member closes both open ends of the pipe.

And the stopper member is further formed of an outer diameter that blocks the outer diameter of the pipe and an outer diameter that is inserted into the inner diameter of the pipe to block the inner diameter of the pipe.

And the length of the circumference of the outer diameter is shorter than the circumference of the outer diameter of the pipe.

And the length of the periphery of the small diameter is shorter than the length of the periphery of the pipe inside diameter.

And the elastic member is fastened in the outer diameter of the stopper member.

The stopper member is formed of at least one of carbon steel, stainless steel steel, and aluminum processing material.

Wherein the pipe has both ends open and a plurality of the plug members open and close both opened ends of the pipe, and both ends of the elastic member are connected to the plurality of plug members, And is pulled by an elastic force so as to close both opened ends of the pipe.

The apparatus for preventing the molten metal in the inter-casting pipe according to the present invention constituted as described above opens and closes both ends of the pipe by using an elastic member and a stopper member, have.

Further, an additional cutting step is not required, so that contamination due to generation of chips due to cutting is not generated, and the quality is improved.

Further, there is an advantage that the dimensional precision with respect to the mold core pin is high.

Further, the elastic member and the plug member removed from the pipe after the final operation have an advantage that they can be recycled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view illustrating an apparatus for preventing molten metal in a casting pipe from being installed inside a pipe according to an embodiment of the present invention; FIG.
FIG. 2 is a partially enlarged view of the end of FIG. 1 inserted into the mold core pin.
3 is an enlarged view of a part of an apparatus for preventing molten metal in a casting pipe according to an embodiment of the present invention, showing that an elastic member and a stopper member are fastened together.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram schematically illustrating an apparatus for preventing molten metal in a casting pipe according to an embodiment of the present invention. FIG.

As shown in FIG. 1, an apparatus for preventing molten metal in a pipe from being intermixed with casting according to the present invention is an apparatus for preventing the molten metal in the pipe 1 from interfering with casting of a casting into which a pipe 1 having an open end is inserted, A stopper member 10 for opening and closing an end 3 of the pipe 1 and a stopper member 10 provided inside the pipe 1 and connected to the stopper member 10 so that the stopper member 10 can be inserted into the pipe 1, And an elastic member 20 for pulling the stopper member 10 with an elastic force so as to cover both opened ends of the stopper member 10.

The pipe 1 may preferably be formed of at least one of carbon steel tubes STKM 12 to 18 for mechanical structure, stainless steel tubes STS 301 to 406 and aluminum tubes AI 1070 to AI 7178. However, the pipe 1 is not limited thereto, but may be formed of any material as long as it can be inserted and cast in the casting.

The stopper member 10 may be formed of at least one of carbon steel for machine structure, stainless steel steel and aluminum processing material, and may be formed to correspond to the shape of the pipe 1, , An elliptical columnar shape, a polygonal shape, or the like.

The stopper member 10 has an outer diameter 11 for blocking an outer diameter of the pipe 1 and a length of a circumference of the outer diameter 11 to be inserted into the pipe 1, And an outer diameter (13) formed to cover the inner diameter of the pipe (1).

At this time, the circumference of the outside diameter 11 is shorter than the circumference of the outside diameter of the pipe 1, and the circumference of the outside diameter 13 is longer than the circumference of the inside diameter of the pipe 1 Respectively.

More specifically,

"Length of the stopper member 10 outside diameter 11 " D-5DCT = D (1-5CT)"

"Length of the outer diameter of the plug member 10 " N-5NCT = N (1-5CT)"

, Where D = pipe (1) outer diameter, C = thermal expansion coefficient, T = temperature change, 5 = safety factor, and N = pipe (1) inner diameter.

FIG. 2 is a partially enlarged view of the end of FIG. 1 inserted into the mold core pin.

2, the length of the outside diameter 11 and the outside diameter 13 of the stopper member 10 described above is used to prevent the fixing and seating problems in the mold, The pipe 1 is inserted into the mold core when the thermally expanded length of the pipe 1 is smaller than the thermally expanded length of the plug member 10 when inserted into the mold.

3 is a view showing a part of an apparatus for preventing molten metal in a casting pipe from being enlarged according to an embodiment of the present invention, and showing that an elastic member and a stopper member are fastened together.

3, the elastic member 20 is fastened to the outer diameter 13 of the stopper member 10. The outer diameter 13 of the elastic member 20 is provided with an installation groove 13a, The elastic member 20 may be fixed to an end of the elastic member 20 by inserting an end of the elastic member 20 into the installation groove 13a.

The elastic member 20 may be formed of at least one of a steel wire for machine structure, a stainless steel wire, and a valve spring tension.

The length of the outer diameter of the elastic member 20 is shorter than the inner diameter of the pipe 1 and the length of the elastic member 20 is 1/4 to 3/4 of the total length of the pipe 1 And the spring constant value is preferably 0.75 / pipe (1) length kg / mm to 400 / pipe (1) length kg / mm.

1, both ends 3 of the pipe 1 are opened, and a plurality of the plugs 10 open and close both open ends 3 of the pipe 1, Both ends of the elastic member 20 are connected to a plurality of the plug members 10 so that a plurality of the plug members 10 seal the open ends of the pipe 1, So that the stopper member 10 is pulled by the elastic force.

As described above, the apparatus for preventing the molten metal from being intermixed with casting according to the present invention can be separated from the pipe 1 easily by taking out after the casting is completed, so that the shape of the pipe 1 can be maintained without any additional post-processing.

The process of installing the device for preventing molten metal in the inter-casting pipe of the present invention in the pipe 1 includes inserting the elastic member 20 into the pipe 1 and inserting the elastic member 20 at both ends of the elastic member 20 Both ends of the elastic member 20 are fitted and fixed in the installation groove 13a of each stopper member 10 so that the stopper member 10 is fastened.

The process of removing the apparatus for preventing molten metal in the inter-casting pipe of the present invention from the pipe 1 is described below with reference to FIG. 2, in which the end of the pipe 1 is inserted into the mold core pin A to cast the product, The elastic member 20 is separated from the plug member 10 and the elastic member 20 while the elastic member 20 is forcibly pulled out of the pipe 1, ) To remove the casting intermixture preventing device of the present invention from the pipe 1.

The apparatus for preventing the molten metal in the inter-casting pipe according to the present invention constituted as described above opens and closes both ends of the pipe by using an elastic member and a stopper member, In addition, since no additional cutting process is required, there is no contamination due to generation of chips due to cutting, and the quality is improved. The dimensional precision with the core pin is high, and the elastic member The plug member has the advantage that it can be recycled.

Although the present invention has been described with reference to the drawings, it is to be understood that the present invention is not limited to the above-described embodiments and drawings, Various modifications and variations are possible to those skilled in the art.

1: pipe
3: End
10:
11: External light
13: Outdoors
13a: Installation home
20: Elastic member

Claims

An apparatus for preventing molten metal in a pipe between castings of a casting into which a pipe having an open end is inserted,
A cap member for opening / closing an end of the pipe; And
An elastic member provided inside the pipe and connected to the stopper member to pull the stopper member with an elastic force so that the stopper member closes the open end of the pipe; / RTI >
The stopper member
The outer diameter of the outer diameter of the pipe
Wherein the pipe is inserted into the pipe to seal the inside diameter of the pipe and is formed as a small outside diameter having a smaller circumferential length than the circumference of the inside diameter of the pipe.

delete

The method according to claim 1,
Wherein a length of the outer periphery is shorter than a length of a periphery of the outer diameter of the pipe.

delete

The method according to claim 1,
Wherein the elastic member is fastened in an outer diameter of the stopper member.

[2] The apparatus according to claim 1,
Wherein the molten metal is formed of at least one of carbon steel, stainless steel steel and aluminum processing material.

The method according to claim 1,
The pipe is open at both ends,
Wherein the plurality of the plug members open and close the open both ends of the pipe,
Wherein both ends of the elastic member are connected to a plurality of the stoppers so that a plurality of the stoppers are pulled by an elastic force so as to close the opened ends of the respective pipes.