JP2993526B2 - Drying method of slurry cast molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for drying a space below a ball surface of a sanitary ware formed of a slurry cast molding.

[0002]

2. Description of the Related Art As shown in FIG. 2, a sanitary ware (Western-style toilet) 100 has a rim 101 and a ball surface 102 at an upper portion, and a ball surface 102 and a water conduit 103 provided at the bottom of the ball surface 102 have an outer wall. 104 and the inner wall 105. Then, the space V below the ball surface 102 formed by the outer wall 104 and the inner wall 105 is closed with a bottom adhesive plate 106 to provide an air layer for heat insulation, and to stain the floor,
Prevents condensation that can cause rot.

Here, the toilet bowl 100 and the bottom plate 106 are formed of a slurry-cast molded body of a clay-based material called a green body, and the toilet bowl 100 and the bottom plate 106 are formed separately from each other. 106 is adhered to the toilet 100, integrated, dried, glazed and fired.

[0004]

In FIG. 2, an outer wall 1 is shown.
04, the inner wall 105 and the bottom adhesive plate 106 begin to dry at the same time, but the outer surface portion that is in contact with the outside air is subject to natural convection and dries quickly, and the inner surfaces of the spaces V and W below the ball surface 102 are the bottom adhesive plate. Drying is slow, for example, due to the blockage at 106, and the shrinkage rate during drying and firing differs between the outer surface and the inner surface.

As a result, since the ball surface 102 is large in the drying process, the ball surface 102 is reduced in weight, and the inner wall 105 and the bottom adhesive plate 106 are reduced.
Is stretched, and the ball surface 102 and the inner wall 10
5, the inner wall 105 and the bottom adhesive plate 106
There is a possibility that a crack may be generated in the vicinity 109 of the boundary portion and the crack may reach the ball surface 102 through the thickness of the ball surface 102.

[0006] Even when no cracks are formed, the bottom adhesive plate 10
6 raises the ball surface 102 via the inner wall 105, and the ball surface 102 undulates. After the drying, the undulating portion is polished to remove the undulation.
Production efficiency was poor. Therefore, air supply holes and exhaust holes are provided in the bottom adhesive plate, forced air is circulated inside the space closed by the bottom adhesive plate to promote drying, and the balance of drying and shrinkage with the outer part touching the outside air is Accordingly, it is an object of the present invention to produce a high-quality molded product and shorten the drying time.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a slurry cast molded product in which a space below a ball surface of a sanitary ware is closed with a bottom adhesive plate. An exhaust hole is provided, and forced air is supplied from an air supply hole to circulate in the space below the ball surface and exhaust air from the exhaust hole.

[0008]

According to the above means, when the air forcedly blown from the air supply hole by the air supply means circulates in the space below the ball surface and is exhausted from the exhaust hole, the air inside the space below the ball surface is dried. Facilitate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a toilet bowl to which a bottom adhesive plate of a slurry cast molded product of the present invention is applied. The provided water channel 4 is supported by an outer wall 5 and an inner wall 6. A substantially S-shaped expansion section 7 having a horizontal section is provided on the inner wall 6, and an air hole 8 is provided in the horizontal section.

The spaces S and W below the ball surface 3 formed by the outer wall 5 and the inner wall 6 are closed with a bottom adhesive plate 9 to prevent dew condensation, so that an air layer is formed. The bottom adhesive plate 9 is formed by a slurry casting method separately from the toilet 1, and is then adhered between the lower portions of the outer wall 5 and the inner wall 6 of the toilet 1 to be integrated with the toilet 1. The bottom bonding plate 9 is provided with an expansion portion 10 that is curved in a substantially U-shape at the center portion, and a bent portion 11 near a boundary portion with the outer wall 5. A portion of the bottom adhesive plate 9 excluding the bent portion 11 and the expansion portion 10 is a sufficiently long horizontal portion 12.
An air supply hole 13 and an exhaust hole 14 are provided before and after the zero.

Next, the operation of the supply holes 13 and the exhaust holes 14 will be described. The molded body formed by casting the clay body into the shape of the Western style toilet shown in FIG. 1 is released from the mold, and a separately formed bottom adhesive plate 9 is provided between the outer wall 5 and the lower portion of the inner wall 6 of the toilet 1. After bonding, it is transferred to a drying step. In general, the outer surface of the ball surface 3, the water channel 4, and the outer wall 5 is accelerated by the convection of the outside air to promote the evaporation of water, and the drying speed is faster. Drying is generally slow because of

Therefore, air of about 2 m / s is forcibly fed from the air supply hole 13 by air supply means (not shown), and circulates in the lower spaces S and W. The circulated air is the exhaust hole 1
The air is evacuated so as to be pushed out one after another. As a result, the evaporation of moisture from the inner surface side portions of the lower spaces S and W is activated, and drying is promoted. Therefore, the strength of the ball surface 3 is obtained during the early drying, and no cracks are formed in the boundary portion 15 between the ball surface 3 and the inner wall 6 and the boundary portion 16 between the inner wall 6 and the bottom adhesive plate 9. No undulations.

[0013]

As described above in detail, according to the present invention, the air is forcibly circulated from the air supply holes to the bottom plate of the sanitary ware to the space below the ball surface, so that the drying and shrinkage of the molded body are balanced. This prevents cracks and undulations from occurring on the ball surface, improves product yield, and eliminates the need for finishing work after drying, thereby improving production efficiency. Also, the drying time of the molded product can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a toilet bowl to which a bottom adhesive plate of a slurry cast molding of the present invention is applied.

FIG. 2 is a sectional view of a toilet bowl to which a bottom adhesive plate of a conventional slip casting is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sanitary ware 3 Ball surface 9 Bottom plate 13 Air supply hole 14 Exhaust hole S Space below ball surface

────────────────────────────────────────────────── ─── Continued on the front page (72) Yoshiro Nawamoto, Inventor 2-1-1, Nakashima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Koichi Kuwano Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka 2-1-1 1-1 Inside Tohki Kiki Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) C04B 33/28-33/30 C04B 35/64

Claims (1)

(57) [Claims] 1. A slurry cast molded body in which a space below a ball surface of a sanitary ware is closed with a bottom adhesive plate, an air supply hole and an exhaust hole are provided in the bottom adhesive plate, and forced air is supplied from the air supply hole to supply the forced air. A method for drying a slurry cast molded product, wherein the molded product is circulated in a space below a ball surface and exhausted from an exhaust hole.