JPS59229254A - Coating method of core - Google Patents

Abstract

PURPOSE:To concentrate the spherical solid material produced in a core to a prescribed local place by inclining the core to a prescribed angle in the stage of taking out upward the core dipped in a coating liquid and removing the coating liquid sticking thereto. CONSTITUTION:For example, a core 1 is bound to a holding plate 3 as shown in the figure and after the core is dipped in a coating liquid 6, the core is taken out upward and the excess liquid 6 sticking thereto is led downward by own weight and is removed by dripping. The core 1 in this case is dipped in the liquid in the position inclined approximately by 45 deg. and here the plate 3 is inclined by the intended angle from the horizontal position and the core 1 is set in the position approximately perpendicular from about 45 deg. position. The end face 2b in the core print part 2 of the core 1 is then faced downward and the excess liquid 6 is concentrated to the end face 2b where a solid material 7 accumulates. The solid material is brought to the deep part of a set hole when the core is set therein so that the core is set without interference.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a method for forming a coating by applying a coating liquid to a core for pressure casting.

Conventionally, in this type of method, the core is immersed in the mold coating liquid, and then the core is taken out above it, and the surplus of the liquid that lands on the mold is guided downward by its own weight, so-called. There are known methods that remove the material by cutting, but
In this case, the surplus is led downward to the core and remains to some extent on the downward facing surface, forming a spherical solid on the surface! This is a cause of set failure and other problems, and post-finishing is required to remove it, which is unavoidably troublesome.

The object of the present invention is to obtain a method that does not have such inconveniences.After the core is immersed in the mold coating liquid, it is then taken out above it and the liquid adhered to it is removed. In a type in which the surplus is guided downward by its own weight and removed, the core is tilted in advance to a predetermined angular position when removing the surplus.

Embodiments of the present invention will be described with reference to attached drawings.

In the drawings, (1) indicates a core, and (2) indicates a baseboard extending to the end of the core (1), and the core (1) is, for example, as shown in the first diagram, when a plurality of the cores are stored on a pallet or other The holding plate (3) is fixed to the holding plate (3) via each clamp member (4), and the coating mold in the liquid tank (5) below is placed facing downward as shown in the figure. After being immersed in liquid (6)
The liquid is taken out above the liquid, and the excess liquid adhering to the liquid is guided downward by its own weight, removed by so-called dripping, and then dried.

In this case, the cough core (1) is immersed in the nucleus (6) at an angle of about 45 degrees as shown in the figure, and it is immersed in the cough core (6) at an angle of approximately 45 degrees as shown in the second figure. When removing the surplus, the surplus is guided downward to the downward facing surface of the lower end, that is, the side surface (2a) of the baseboard (2) extending downward in the case shown. Some amount remains on the side surface (2a), resulting in a spherical solid (7), which tends to become a hindrance during subsequent setting, thus requiring post-finishing to remove it. .

The present invention is intended to eliminate such inconveniences, for example, as shown in FIG. The surplus portion described above is removed. To explain further, 1
In the case shown, the retaining plate (3) is tilted from its fully horizontal position to give each core (1) a predetermined angular position; ), the end face (2b) of the face (2b) faces downward, and thus the surplus concentrates on the end face (2b) and forms a solid material (7) thereon. As shown in the figure, it becomes the inner part of the corresponding set hole (8) so that the set cannot be stepped over.

The core (1) is not limited to this, and may be of the type shown in Figure 5, for example. When the core (1) is taken out as it is and the excess is removed, it may be of the type shown in Figure 6, for example. As shown in Fig. 7, a large number of solid objects (swords) are dispersed and generated on the lower surface (1a), and it is troublesome to remove them. in an inclined angular position, and thus the surplus is deposited on the lower surface (1a
) along one of its corners (1b), said solid (7) remains in said corner (1b), thus facilitating its removal; It is also possible to form the four parts (9)'f: in advance on the corner part (1b) as shown in the figure and omit the post-finishing.

In this way, according to the present invention, when the core is taken out upward and the excess of the mold coating liquid adhering to it is removed, the core is tilted in advance to bring it into a predetermined angular position. If solid matter is generated, it can be concentrated in a predetermined area, for example, by limiting it to the end face of the baseboard, eliminating the need for post-finishing, which has the effect of simplifying and facilitating the work.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the immersed state of the core as an example of the method of the present invention, Figs. 2 and 6 are diagrams of its removed state, and Fig. 4 is a diagram illustrating the core set fr: , FIG. 5 is a diagram of another example of the immersed state, and FIGS. 6 and 7 are diagrams of the removed state.

Claims (1)

[Claims] After the core is immersed in the coating solution, it is then taken out above it and the excess of the solution adhering to it is guided downward by its own weight and removed. A method for coating a core, which comprises tilting the core in advance to bring it to a predetermined angular position when removing the excess portion.