KR20140120457A - Trial mold using exchangeable cartridge for disamatic molding line - Google Patents

Abstract

The present invention relates to a trial mold of a cartridge exchange type for a disamatic molding line. The starting mold of the present invention has the same size as a mass-production mold and has a basic injection cup and a sprue, And a mold having a product shape having a casting mold, a casting mold, a casting mold, and a tapping well which accurately match the casting mold of the standard casting mold while having an insert portion corresponding to the above-mentioned insertion groove at the lower portion thereof . In this type of starting mold, once the standard platen is manufactured, thereafter, when the shape of the product changes, only the actual molds mounted inside can be replaced by the cartridge type, so that the prototype of the design change can be easily handled, The production cost is reduced, and there is no difference in quality between the prototype and the production product.

Description

Technical Field [0001] The present invention relates to a cartridge replacement type starting mold for a design molding line,

The present invention relates to the production of a starting mold which can be applied to a disamatic molding line, which is a type of automatic casting method widely used in a foundry, and more particularly, The present invention relates to a start-up mold capable of replacing an actual mold with a cartridge replacement method.

As the casting industry has developed, mass production technology of casting products and automatic production line have been developed, and disamatic molding technology, which is a kind of vertically divided molding method among various gravity casting methods, has been developed.

The disamatic consists of a sand mold forming machine and a sand mold conveyor which mass-produce sand molds for sand casting in a short period of time. The molds to be mounted on sand mold forming machines are usually mass production molds. They have strength and hardness to prevent abrasion and abrasion by molding sand. Use high-quality metal.

Modern disamatic casting lines can produce 550 molds per hour, and the mismatch between the two moldings does not exceed 0.1 mm. The size of the molds to be mounted varies from 400X500 to 850X1200mm.

However, in disamatic molding, it is not possible to work with mass-produced molds from the beginning. First, small-sized starting molds with one or two cavities are produced and cast samples to improve the design and casting methods. And to minimize the defect rate.

FIG. 1 is a perspective view of a starting mold for general gravity casting, and has a match plate structure in which shapes of a product, a trench, a sprue, a bath, etc. appear at the same time.

Fig. 2 is a cross-sectional view showing the structure of the ramp type manufactured using the match plate mold. In the upper ramp 10, the injection cup 11, the sprue 12, the boule 13, An injection port 15 and a casting cavity 16 of a product shape are formed on the lower die 20. The lower die 20 corresponding to the upper die with the dividing line 30 facing the lower die, A casting cavity 26 and the like are formed.

In the gravity casting method using the mold having the above-described configuration, when a high-temperature molten metal is injected through the injection cup 11 using a ladle (not shown), the molten metal filled in the molten metal 12 The molten metal is filled in the casting cavity and replenished in the casting cavity so as to fill the pressure gating section 14 and the casting cavity section 16 through the passage 13 and to prevent cracking due to volume contraction.

The above-described conventional sample casting method using a starting mold is a gravity casting method having a horizontal dividing line, which is largely influenced by the skill of the field worker since it is cast by the water-molding molding of the field worker. As a result, the quality and accuracy of the sample deteriorated, the surface condition became rough, and thereafter, it was difficult to apply the casting method as it was due to the difference in casting method when manufacturing a mass production mold for a disamatic line having a larger number of cavities and a vertical dividing line Respectively. Also, over time, the number of molding molding professionals is also declining.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to provide a mold for starting a mold which can be applied to a disamatic line, A standard platen having a true insertion groove and a product shape mold having an insert corresponding exactly to the insertion groove, so that once the standard platen is fabricated, thereafter, when the shape of the product changes, In which the cartridge is replaced by a cartridge type.

When the starting mold produced by the above method is used, it is a starting mold for producing a sample, but a starting mold is directly mounted on a mass production line instead of the conventional water-molding molding to produce a sample. It is possible to eliminate the difference between the sample and the mass product and to apply the casting method at the time of the sample casting to the mass-production mold as it is. In addition, since the standard platen produced once can be used permanently, the cost of manufacturing the initial platen mold increases, but after that, the production cost of the standard platen can not be entered. The response to the design change is also made only in the actual mold part except for the standard surface part, so that it can respond quickly.

1 is a perspective view of a conventional horizontal split type match plate mold for molding.
FIG. 2 is a cross-sectional view showing a structure of a mold formed using a conventional match plate mold.
3 is a perspective view of a pair of starting-type molds of a press plate portion applicable to a disamatic line according to an embodiment of the present invention.
4 is a perspective view of a swing plate portion of a pair of starting molds applicable to a disamatic line according to an embodiment of the present invention.
5 is a photograph of a start-up mold actually manufactured according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 3 is a perspective view of a start-up mold that can be applied to a disamatic line to be manufactured according to an embodiment of the present invention, and is a press plate portion of a pair of molds. An end insertion groove 90 is formed in a standard platen 50 having the same size as a mass-production mold. In the upper part of the platen, a basic injection cup 51, a sprue 52, (60) and two bushings (70) are shown.

The actual mold to be replaced every time the shape of the product is changed is formed with an end 80 on the lower outer side surface so as to exactly match with the insertion groove 90 of the standard plate and in addition to the product shape 46, (43) which exactly coincides with the gutter (43), and a tang road connected to the gull gull and the gull gates (44, 45).

4 is a swing plate part of a pair of starting molds. The standard platen 50a has a shape basically similar to the platen 50 of the above-described press plate portion, but the most significant difference is that there is no guide rod 60 for preventing the formed mold from being damaged during the molding process, Is thicker. This is because the swing plate portion is rotated after the swing plate portion is compressed and can not affect the casting process, and the thickened thickness is used for casting from thinner to thicker products using a standard base plate once made.

5 is a photograph of a starting mold for an actual disamatic line manufactured according to an embodiment of the present invention.

Claims (7)

in the production of a starting mold capable of being applied to a disamatic line, a standard plate having the same size as the mass-production mold and having a stepped insertion groove in the inside, and a mold having a product shape having an insertion portion corresponding exactly to the insertion groove Once the standard platen is manufactured once, the structure of the start-up mold is changed so that only the actual molds mounted inside are changed in the cartridge type when the shape of the product changes.
The method of claim 1, wherein the applicable disamatic line includes not only a vertically divided type but also a horizontally divided type.
The structure of a starting mold according to claim 1, wherein any one of a pair of standard tables formed of a press plate portion and a swing plate portion is thickened so as to be usable regardless of the thickness of the product to be cast.
2. The structure of a starting mold according to claim 1, wherein the insertion groove of the standard table is stepped so that front mounting is possible.
2. The structure of a starting mold as claimed in claim 1, wherein the insertion groove of the standard table is stepped to enable rear mounting.
2. A mold according to claim 1, characterized in that the insertion groove of the standard platen serves as an insertion groove for the actual mold without being completely or completely penetrated.
2. The structure of a starting mold according to claim 1, wherein the structure of the actual mold is made up of a product shape for forming the casting cavity portion, the lower casting mold opening, the casting mold opening and the scouring mold without the injection cup and the upper casting mold.

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