KR101904218B1 - Casting method using vertical case - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a casting method using a metal case, and more particularly, to a casting method capable of increasing casting efficiency by using a metal case capable of mounting a plurality of the shell molds during casting using a shell mold .
A casting method using a metal case according to the present invention comprises: a first step of seating a shell mold lower plate capable of forming a bottom surface contour of a casting; A second step of assembling the middle plate of the shell mold so as to form a side contour of the cast so that one end of the middle plate is connected to the shell mold lower plate; A third step of assembling the core body into the shell mold middle plate; A fourth step of assembling a shell mold upper plate so as to form an upper outer shape of the casting and connected to the other end of the middle plate of the shell mold to form a shell mold assembly; A fifth step of placing the shell mold assembly manufactured through the fourth step in a metal case formed with a filling hole and a filling hole; And a sixth step of injecting a solution into each of the shell mold assemblies through the injection hole, wherein a metal injection hole is formed on the upper surface of the metal case, and the injection hole is formed in the inner space of the shell mold assembly The metal case may be connected to the metal mold, and the metal mold may be inserted into the shell mold assembly through the injection hole of the metal case. The metal case may have a vertical cross- Wherein the metal mold has a recessed shape corresponding to the shell mold assembly so that the shell mold assembly can be housed in the mold-assembled surface of the front portion and the rear portion, So that it is possible to produce a uniform cast product at a time of casting by using the shell mold assembly.
The casting method using the metal case according to the present invention has the effect of producing a cast product which is uniformly cast in batch.
Further, the casting method using the metal case according to the present invention has the effect of increasing the production efficiency through casting.

Description

[0001] Casting method using a metal case [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a casting method using a metal case, and more particularly, to a casting method capable of increasing casting efficiency by using a metal case capable of mounting a plurality of the shell molds during casting using a shell mold .

When manufacturing a large number of parts, since the casting of the casting mold requires a separate injection of the solvent into the casting mold, the quality of the casting is not uniform and the production efficiency is low.

In this regard, a conventional technique for 'casting a brake caliper housing' is disclosed in Korean Patent No. 10-1021952. However, in order to increase the production amount, a casting space is formed in a double layer The molds and the core are so complicated in shape that the design of the mold is not easy and the production amount is limited.

Korean Patent No. 10-1021952 (Mar.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a casting method capable of increasing the production efficiency by casting two or four shell molds by one- There is a purpose.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems to be solved by the present invention, which are not mentioned here, As will be appreciated by those skilled in the art.

A casting method using a metal case according to the present invention comprises: a first step of seating a shell mold lower plate capable of forming a bottom surface contour of a casting; A second step of assembling the middle plate of the shell mold so as to form a side contour of the cast so that one end of the middle plate is connected to the shell mold lower plate; A third step of assembling the core body into the shell mold middle plate; A fourth step of assembling a shell mold upper plate so as to form an upper outer shape of the casting and connected to the other end of the middle plate of the shell mold to form a shell mold assembly; A fifth step of placing the shell mold assembly manufactured through the fourth step in a metal case formed with a filling hole and a filling hole; And a sixth step of injecting a solution into each of the shell mold assemblies through the injection hole, wherein a metal injection hole is formed on the upper surface of the metal case, and the injection hole is formed in the inner space of the shell mold assembly The metal case may be connected to the metal mold, and the metal mold may be inserted into the shell mold assembly through the injection hole of the metal case. The metal case may have a vertical cross- Wherein the metal mold has a recessed shape corresponding to the shell mold assembly so that the shell mold assembly can be housed in the mold-assembled surface of the front portion and the rear portion, , And the shell mold assembly can be used to produce a uniform cast product at the time of casting A casting method using a metal case is provided.
In the present invention, the metal case is formed of a metal having an arbitrary thickness for enduring the molding pressure generated during casting.
In the present invention, the metal case is formed to have a uniform thickness and has a shape corresponding to the outer shape of the shell mold assembly.

The casting method using the metal case according to the present invention has the effect of producing a cast product which is uniformly casted at the time of shell mold casting.

Further, the casting method using the metal case according to the present invention has the effect of increasing the production efficiency through casting.

1 is a flowchart of a casting method using a metal case according to the present invention.
FIG. 2 shows a process of manufacturing the shell mold assembly formed through the first through fourth steps of the casting method using the metal case according to the present invention.
3 is a view showing a metal case of a casting method using a metal case according to Embodiment 1 of the present invention.
4 is a view illustrating a state in which a shell mold assembly is mounted on a metal case of a casting method using a metal case according to Embodiment 1 of the present invention.
5 is a top view showing a state in which a plurality of metal cases are stacked in the casting method using the metal case according to the first embodiment of the present invention.
FIG. 6 is a detailed view of an upper part of a plurality of metal cases of a casting method using the metal case according to the first embodiment of the present invention. FIG.
7 is a view showing a shape in which two castings are manufactured in pairs according to Embodiment 1 of the present invention.
8 is a view showing a shape in which four castings are manufactured in pairs according to Embodiment 1 of the present invention.
9 is a view showing a metal case made of metal according to the second embodiment of the present invention.
FIG. 10 shows a shell mold assembly coupled to a metal case made of metal according to the second embodiment of the present invention.
11 is a view showing the shape of a product manufactured according to the second embodiment of the present invention.
12 is a view illustrating a shell mold assembly coupled to a metal case manufactured according to the third embodiment of the present invention.
13 is a view showing a shape of a product manufactured according to the third embodiment of the present invention.
FIG. 14 shows a shell mold assembly coupled to a metal case manufactured according to Embodiment 4 of the present invention. FIG.
FIG. 15 is a view showing a shape of a filling hole and a bath of a product manufactured according to the fourth embodiment of the present invention. FIG.
16 is a view showing a shape of a product manufactured according to the fourth embodiment of the present invention.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings.

≪ Example 1 >

The casting method using the metal case 100 according to the present invention comprises a first step (S10) of seating a shell mold lower plate capable of forming a bottom surface contour of a casting, as shown in Fig. 1; A second step (S20) of assembling a shell mold middle plate in a form capable of forming a side outer shape of the casting so that one end is connected to the shell mold lower plate; A third step (S30) of assembling the core body inside the shell mold middle plate; A fourth step (S40) of forming a shell mold assembly by assembling the shell mold upper plate so as to be connected to the other end of the middle plate of the shell mold so as to form an upper outer shape of the casting; A fifth step S50 of placing the shell mold assembly manufactured through the fourth step in the metal case 100 in which the injection hole 30 and the pressurizing hole 40 are formed; And a sixth step (S60) of injecting a solution into each of the shell mold assemblies (1) through the injection hole (30). The upper surface of the metal case (100) And the molten metal injection hole 30 is connected to the inner space of the shell mold assembly 1 so that the molten metal injected through the metal injection hole 30 of the metal case 100 is injected into the shell mold assembly 1 The metal case 100 may include a front surface portion and a rear surface portion which are formed to have a mold surface having a vertical cross-sectional shape and can be formed to be mutually engaged. In the mold surface of the front surface portion and the rear surface portion, An engraved shape is formed in a shape corresponding to the shell mold assembly 1 so that the shell mold assembly 1 can be accommodated and each of the metal injection holes 30 of the metal case 100 is partially formed, When the shell mold assembly 1 is used, It can produce castings.

First, in the first step (S10), a shell mold lower plate capable of forming a bottom surface contour of the casting is seated.

Next, the second step (S20) assembles the middle plate of the shell mold, which is capable of forming the lateral contour of the casting, so that one end is connected to the shell mold lower plate.

Specifically, the middle plate of the shell mold is a portion where the volume of the casting is formed, and a space for accommodating the inside of the shell mold bottom plate when assembled with the shell mold bottom plate is provided.

Next, in the third step (S30), the core body is assembled in the middle of the shell mold.

The core is for forming the cavity of the casting, and may be formed in various shapes according to the shape of the casting.

Next, in the fourth step S40, the shell mold upper plate is assembled so as to be connected to the other end of the middle plate of the shell mold, so that the shell mold assembly 1 can be assembled .

As shown in FIG. 2, through the first step (S10) to the fourth step (S40), the mold of the casting to be produced can be completed.

In this case, the shell mold assembly 1 is provided with a solution injecting unit 10 and a pressing unit 20 through which the solution can be injected. The solution injecting unit 10 and the pushing unit 20 are formed of a metal case It is preferable that it is formed in conformity with the shape to be seated on the base 100.

The fifth step S50 is a step in which the shell mold assembly 1 manufactured through the fourth step S40 is inserted into the metal case 100 in which the injection hole 30 and the pressurizing hole 40 are formed. .

The metal case 100 is for collectively arranging the shell mold assembly 1 in such a form that it is easy to inject the metal mold into the shell mold assembly 1. The shell mold assembly 1 is arranged in the longitudinal direction As shown in FIG.

3, the two shell mold assemblies 1 may be arranged side by side in the metal case 100. The shell mold assemblies 1 may be arranged in the metal case 100, And are arranged in close contact with each other in the form of a positioned.

This is because when the shell mold assembly 1 is arranged in the overlapped form, the space occupying volume can be minimized and the injection of the solution can be made more efficient.

In the arrangement as described above, the filling injection hole 30 can be connected simultaneously with another pair of shell mold assemblies 1, which are simultaneously connected or provided adjacent to the two shell mold assemblies 1 arranged side by side have.

Therefore, during the injection of the solution through the above-mentioned solution injection hole 30, the injection of the solution into the inside of the two to four shell mold assemblies 1 is possible by one injection.

3 and 4, the metal case 100 is formed in a rectangular parallelepiped shape having a longitudinal direction perpendicular to the paper surface, and has a front surface and a rear surface, And the lower shape are provided at an engraved angle so that the shell mold assembly 1 can be accommodated when a plurality of metal shells 100 are overlapped as shown in Fig.

At this time, the metal case 100 is formed with an engraved angle so that the two shell mold assemblies 1 can be horizontally placed side by side.

As a result, the weight occupied by the space can be minimized, and the shell mold assembly 1, which is connected in parallel, can be simultaneously injected with the solution.

As a result, as shown in FIG. 7, it is possible to manufacture a casting product in which two castings are provided in pairs.

7A shows a molten metal injected into the injection hole 30, and FIG. 7B shows a molten metal injected into the molten metal 40. FIG. 7 shows the casting shape before roughing.

6, the metal case 100 is formed with a depressurization hole 40 of an upwardly open shape in each of the shell mold assemblies 1, and the shell mold assembly 1 Is provided between the engraved holes formed so as to be able to seat the two shell mold assemblies 1 and 2 so that the injection of the solution into the two shell mold assemblies 1 which are seated side by side by one injection is possible.

The metal case 100 is configured to share a pair of shell mold assemblies located on the front or rear surface with the pressurized water hole 40 and the water injection hole 30 so that two pairs of the shells It is possible to inject a solution into the mold assembly 1 at one time.

As a result, as shown in FIG. 8, it is possible to produce a cast article having a pair of four castings.

8A shows a molten metal injected into the molten metal injection hole 30, and FIG. 8B shows a molten metal injected into the molten metal 40. FIG. And k in Fig. 8 shows the casting shape before roughing.

At this time, the material for fabricating the metal case 100 may be composed of at least one of ceramics and sand.

Next, in the sixth step S60, the respective shell mold assemblies 1 are injected with the solution through the injection hole 30. [

After the liquid is injected, the liquid is cooled for a predetermined time.

When the cooling is completed, the metal case 100 is slid and separated from each other. After the shell mold assembly 1 is disassembled, the shell mold assembly 1 is disassembled and released to obtain a product have.

≪ Example 2 >

In another embodiment, the metal case 100 may be replaced with a metal in the configuration of the first embodiment.

Specifically, when the metal case 100 is made of metal, as shown in FIGS. 9 and 10, portions of the two shell mold assemblies 1 where large areas are formed face each other, A pressurized water hole 40 is provided so as to be inserted into the metal case 100 and is opened upward and a molten metal injection hole 30 is provided on one side of the pressurized molten metal hole 40.

The molten metal injected through the molten metal injection hole 30 moves along the molten metal 50 and is injected through the molten metal injection unit 10 of the shell mold assembly 1. [

As a result, as shown in FIG. 11, two castings can be simultaneously cast in the form of facing each other.

11A shows a molten metal injected into the injection hole 30, and FIG. 11B shows a molten metal injected into the molten metal 40. FIG. 11 (k) shows the casting shape before roughing.

The reason why the metal case 100 is used is that when the metal case 100 is manufactured using the metal in the form of the first embodiment, , To minimize the loss of material.

Therefore, it is preferable to configure it in a shape similar to that of the shell mold assembly 1.

The metal case 100 can be used almost permanently at the time of manufacturing the metal, and the cost can be reduced when the metal case 100 is used for a long period of time.

≪ Example 3 >

In another embodiment, as shown in Fig. 12, in the structure of the second embodiment, the pressurized-water hole 40 and the solution injection hole 30 can be formed as one unit.

As described above, if the pressurized water hole 40 and the injection hole 30 are formed as one unit, the blanket 50 naturally disappears, so that the part to be removed is reduced during processing into the finished product, The portion can be reduced and the loss of material can be minimized.

As a result, as shown in FIG. 13, a product in which two castings are formed facing each other and in which the solution injection hole 30 and the pressurization hole 40 are formed is produced, thereby minimizing material loss, Processing of the finished product can also be easily configured.

FIG. 13A shows a solidified molten metal injected into a portion formed by the single injection hole 30 and the molten metal hole 40, and FIG. 13K shows a casting shape before roughing.

<Example 4>

In another embodiment, as shown in FIG. 14, the pressurization hole 40 and the injection hole 30 may be formed as one unit as in the structure of the third embodiment, And the blanket (50) can be formed on the facing surface of the shell mold assembly (1).

Specifically, the bath mold 50 is provided on the lower surface of the shell mold so as to allow the water to flow therethrough, so that the bath mold 50 is completed, Holes 51 are provided through which the water can be evenly injected into the interior of the shell mold assembly 1. [

As a result, the molten metal can be injected into the shell mold assembly 1 at the same time so that the casting structure can be uniformly formed. Due to the battens 50, And it is possible to minimize the defects (entry of the articles, rubbers in the middle) during casting.

Fig. 15 is a view showing that the bathtub 50 is formed by the constitution of the fourth embodiment when the above-mentioned water is injected.

As a result, as shown in FIG. 16, a product in which two castings are formed facing each other, in which a single solution injection hole 30 and a compressed hole 40 are formed, thereby minimizing the loss of material, Processing of the finished product can also be easily configured.

16 (a) shows a solidified molten metal injected into a portion where the single injection hole 30 and the molten metal hole 40 are formed, FIG. 16 (b) shows the molten metal 50, The shape of the casting before roughing is shown.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

S10: First step (seat plate of shell mold)
S20: Step 2 (Assembling the shell mold middle plate)
S30: Third step (core assembly)
S40: Fourth step (assembling shell mold top plate)
S50: Step 5 (Settled in metal case)
S60: Step 6 (injection of the solution)
1: Shell mold assembly 10:
20: pressing part 30: injection hole
40: pressure hole 50:
51: hole 100: metal case

Claims (3)

A first step of mounting a shell mold lower plate capable of forming a bottom surface contour of the casting;
A second step of assembling the middle plate of the shell mold so as to form a side contour of the cast so that one end of the middle plate is connected to the shell mold lower plate;
A third step of assembling the core body into the shell mold middle plate;
A fourth step of assembling a shell mold upper plate so as to form an upper outer shape of the casting and connected to the other end of the middle plate of the shell mold to form a shell mold assembly;
A fifth step of placing the shell mold assembly manufactured through the fourth step in a metal case formed with a filling hole and a filling hole; And
And a sixth step of injecting a solution into each of the shell mold assemblies through the injection hole,
The shell mold assembly comprises:
And a vertical direction perpendicular to the injection hole, wherein in the sixth step, the liquid is vertically introduced into the shell mold assembly,
The upper and lower shapes of the shell mold assembly on the front and rear sides are provided at an oblique angle so that when the metal case is superimposed on a plurality of the shell mold assemblies,
A pair of shell mold assemblies located on the front or rear side can be shared with the pressurized hole and the injection hole,
In the metal case,
Wherein the metal mold is formed of a metal material having a uniform thickness so as to withstand the pressing force generated during casting, and is formed in a shape corresponding to the outer shape of the shell mold assembly. delete delete

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