JPS5846382B2 - Nakago Shintoriitsu Taizo Keihou - Google Patents

Description

[Detailed description of the invention] The present invention relates to a core core integral molding method.

As shown in the first diagram, an ingot case 1 having a notch 2 at the opposite end of the opening is well known, and after setting a refractory nonga etc. in the notch 2 of the case 1, pouring the target molten metal. , the ingot is agglomerated, and then the ingot is deagglomerated by pressing the refractory brick part with tongs or the like to grip the ingot. Casting is required.

Previously, a wooden mold with the shape and rotation shown in the first figure was used, and the core and main mold were integrally molded using this wooden mold as a boundary, but the throttle core to obtain the notch 2 was molded separately. Since this was set on the core and lower mold and then covered with the main mold, it took a lot of man-hours, and there was a drawback that the product dimensions were likely to be distorted due to poor setting at the time of setting.

This invention reduces processes and improves efficiency by simultaneously molding items that were previously molded separately.
The main mold can be easily and reliably covered, and one embodiment of this invention will be described in detail below with reference to the drawings.

FIG. 2 shows a wooden mold 3 used in the present invention. This wooden mold 3 is in the shape of a box with a bottom, exhibiting the same tapered shape as the ingot case 1, and has a notch 4.4 at its open end.

Members, that is, metal fittings 5, 5 are screwed to the wooden mold 3 so as to cover the notches 4, 4 from the outside.

The metal fitting 5 is constructed by bending an iron plate approximately 3X in thickness into a groove shape, and its flanges 5a, 5a are screwed to the outer wall of the wooden mold 3. An inlet 6 penetrating in the depth direction is formed.

Using the wooden mold 3 attached with this metal fitting 5,
Referring to the figure, when the molding means is installed, the wooden mold 3 is set on the main mold 7 as shown in the third diagram, and the main mold 7a and the core 9 are integrally molded with the core metal 8 inserted. However, at this time, the throttle core 10 is also integrally molded.

That is, when the sand is pounded and hardened, the wooden mold 3 is equipped with a metal fitting 5 having an inlet 6 that penetrates in the depth direction of the wooden mold 3.
Sand flows in and fills the notches 4, 4 through the inlet 6, and the main mold 7a, the core 9, and the throttle core 10 are integrally molded.

After the mold is formed in this way, it is placed on a surface plate as shown in Figure 4 and the main mold 7 is removed. It is forcibly torn off due to the notch effect, etc., which has a narrowed area, and then, as shown in Figure 5, when the wooden mold 3 is removed from the mold, the throttle core 10 is made into one piece. A core 9 is then molded.

After that, as shown in FIG. 6, the throttle core 1 is attached to the lower mold 11.
After setting the core 9 with the integrated core 9, when the main mold 7 is placed on the wooden mold 3, a desired space 12 is formed. Since a gap 13 is formed as a cover for the so-called main mold, it can be assembled very easily and reliably, and when hot water is poured into the space 12 shown in FIG. 6, the throttle core 10
is integral with the core 9, so that the ingot case 1 as shown in the first figure is cast.

Of course, the present invention is not limited to a case with a bottom like the ingot case 1.

The present invention is as described above, and the wooden mold is provided with a sand inlet that serves as an inlet for sand during molding and is broken by the demolding force from approximately its periphery due to a notch effect or the like during demolding. By using this wooden mold, it is possible to eliminate the need for centering the core as in the previous model and to mold the throttle core and the core as integrally as possible.

Therefore, according to the present invention, it is possible to eliminate the trouble of separately molding the throttle core as in the prior art, and also to obtain a product with high dimensions because the throttle core is not set incorrectly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an ingot case, FIG. 2 is a perspective view of a wooden mold, and FIGS. 3 to 6 are sectional views showing the molding process. 1... Ingot case, 2... Notch part of 1, 3.
...Wooden mold, 4...3 notch, 5...metal fittings (members)
, 6... Inlet, 7a... Main mold, 9... Core, 1
0... Throttle core, 11... Lower mold.

Claims (1)

[Claims] 1. A bottomed box-shaped wooden mold with a notch in a part of the opening end has a sand inlet in the notch that serves as an inlet for sand during molding and is broken by the demolding force during demolding. After installing a member for molding the throttle core and setting this wooden mold, when molding the core and main mold, sand fills the notch through the inlet from both the core and the main mold. This method is characterized by the fact that the throttle core is molded at the same time as the throttle core is poured into the core.