JPH0146285B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a stall urinal base (hereinafter simply referred to as "urinal base") in which an inner corner cavity is formed at the intersection of the front bowl part and the front apron part. This invention relates to a sludge-ejecting casting method (called "") and improvements to molds used in the sludge-ejecting casting method.

[Prior Art] Conventionally, as shown in Fig. 7, the method of casting and molding a urinal base for removing sludge consists of a group 1 of assembled plaster segments, and an inner corner is formed at the intersection of the front part of the bowl part and the front part of the apron part. A casting space A for forming a cavity and a casting space B for forming a rim passageway are formed inside, and a communication passage C formed in a notch in the plaster division piece 2 connects both casting spaces. A and B are communicated with each other, and a slurry supply and discharge pipe 4 is installed in one casting space A.
A mold 5 with one end opened is prepared, and as shown in FIG. 8, the slurry S is transferred from the slurry supply/discharge pipe 4 into one casting space A and through the communication passage C into the other casting space B. After filling and depositing for a predetermined time, the undeposited slurry S in both casting spaces A and B is removed.
is discharged to the outside through the sludge drainage passage 6a formed in the communication passage C and the sludge supply/discharge pipe 4, and the gypsum segment group 1 is disassembled to form the urinal base 6 (see Fig. 9).
This is what you get.

By the way, the casting space A is formed by:
This is because the gypsum segment 3 has a chamfered end surface 3a so that the gypsum segment 3 on the bottom side of the toilet bowl constituting the gypsum segment group 1 can be easily disassembled.

The urinal base 6 obtained as described above is
As shown in the drawings and FIG. 10, a molded sludge drainage passage 6a is formed at a location corresponding to the communication passage C, and the cavity 6b at the inner corner and the rim water passage portion 6c communicate with each other. It has become a state. Therefore, the 11th
As shown in the figure, by pressing and closing the sludge drainage passage 6a from the inside with a fingertip or the like, cleaning is carried out into the cavity 6b at the inner corner of the stall urinal (not shown) obtained by firing the urinal base 6. It is necessary to prevent water from flowing in to prevent frost damage, etc.

[Problems to be Solved by the Invention] However, the sludge casting method for forming a urinal base has the following drawbacks.

B. As shown in FIG. 11, when the mud removal passage 6a is pressed and closed, the pressing force is transmitted to the apron portion 6d, which may deform the apron portion 6d and make it a defective product. Therefore, conventionally, the yield was very poor.

○B If the pressing force on the mud drainage passage 6a is weakened in order to prevent the apron portion 6d from deforming, the mud drainage passage 6a may not be completely blocked, and the urinal base 6 may not be completely closed. When a stall urinal (not shown) obtained by firing is used, there is a drawback that washing water flows into the inner corner cavity 6b from the rim water passage 6c, causing damage such as frost damage.

The present invention was created in view of the above circumstances.

[Means for Solving the Problems] Means for solving the above-mentioned problems will be explained below using FIGS. 1 to 6, which correspond to embodiments.

The sludge casting method for a stall urinal base according to the first invention is for forming an inner corner cavity at the intersection of the front part of the bowl part and the front part of the apron part, as shown in FIGS. 1 to 3. In a mud removal casting method for obtaining a stall urinal base using a mold 15 in which a casting space D for forming a rim passageway and a casting space E for forming a rim passageway are communicated through a communication passage F, A communication passage F is formed from a non-water-absorbing wall surface f, and as shown in FIG. Meat opening 1
6f is closed with clay 17.

As shown in FIG. 2, the molding die according to the second invention consists of a group of gypsum segments 11 combined, and is used to form an inner corner cavity at the intersection between the front of the pot and the front of the apron. A casting space D for forming a rim passageway and a casting space F for forming a rim passageway are formed inside, and a communication passage F formed in the plaster segment 12 constituting the plaster segment group 11 connects both casting spaces D. , E are in communication with each other, and one end of the slurry supply/drainage pipe 14 is opened in one of the casting spaces D, E. In a mold 15 for casting sludge from a stall urinal base, the communication passage F is connected to a non-water-absorbing wall f. It was formed from

[Function] As shown in FIGS. 1 to 3, the method of casting and molding a stall urinal base according to the first aspect of the present invention, as shown in FIGS. If the gypsum segment group 11 is disassembled after muddying, as shown in FIG. Unattached opening 16f
As shown in FIG.
Simply block 6F with clay 17 to create a urinal base of 16
is obtained.

As shown in FIG. 2, the molding die according to the second invention has a communication passage F formed from a non-water-absorbing wall surface f.
Since the casting space D and the casting space E are communicated with each other, the slurry S can be supplied and discharged into the casting spaces D and E through the communication passage F without being deposited in the communication passage F. As shown in Fig. 5, an unfilled opening 16 is located at a location corresponding to the opening end of the communicating passage F in the urinal base 16 obtained by mud removal casting.
f, 16g.

[Description of Examples] First, a mold according to the second invention will be described based on the examples shown in FIGS. 1 to 3. The mold 15 consists of a group of gypsum segments 11 assembled together,
A casting space D for forming an inner corner cavity and a casting space F for forming a rim passageway are formed at the intersection of the front of the bowl and the front of the apron in the urinal base 16, and the plaster Both casting spaces C and D are communicated with each other through a communication passage F formed in the divided piece 12, and one end of a slurry supply/discharge pipe 14 is opened in the casting space C. The wall surface f of the communication passage F is
By embedding a pipe 18 made of synthetic resin, metal, etc. in the plaster divided piece 12, a non-water-absorbing inner wall surface 1 is created.
8a. Note that the communication passage F is not limited to being formed from a non-water-absorbing pipe, but as shown in FIG. 19 with a non-water-absorbing coating film, etc., and the connecting passage F
It may also form a wall f.

Next, a method of molding a stall urinal base by removing mud according to the first invention will be described based on the embodiment shown in FIGS. 1 to 6. First, the mold 15 (second
(see figure). Next, the slurry S is filled from the slurry supply/discharge pipe 14 into the casting space A and into the casting space B via the communication passage F. Continuously, after depositing for a predetermined time, the undeposited slurry S in both the casting spaces C and D is drained into the communication passage F and the slurry supply/discharge pipe 14.
Exhaust through. Finally, the plaster segment group 1
As shown in FIG. The urinal base 16 is completed by closing it with clay 17 of the same or substantially the same quality.

[Structure of the Invention] As detailed above, the present invention has the following excellent effects.

Since the sludge drainage passage that was conventionally formed is not formed on the back side of the apron part of the urinal base, the process of blocking the sludge drainage passage by pressing is omitted.
It is possible to obtain a standard urinal base without deformation in the apron portion, etc.

The opening formed in the bowl of the urinal base is easily and reliably closed with clay without deforming the apron and the surface of the bowl. Furthermore, it becomes possible to confirm the blockage, thereby improving quality. Therefore, in the urinal obtained by firing, the flushing water does not leak into the cavity in the inner corner, and it is possible to avoid problems such as freezing damage caused by accumulated water in the cavity in the inner corner.

Since the conventionally formed slurry drainage passage is not formed, the amount of slurry used can be reduced and resources can be saved.

[Brief explanation of drawings]

Figures 1 to 6 show embodiments of the present invention, in which Figure 1 is a cross-sectional view showing the mold filled with slurry and inked, and Figure 2 is a cross-sectional view showing the mold filled with slurry. A cross-sectional view of the previous mold, Figure 3 is the − of Figure 1.
Fig. 4 is an enlarged sectional view of a communication passage in another embodiment, Fig. 5 is a longitudinal sectional view of a urinal obtained by disassembling the mold, and Fig. 6 is an enlarged sectional view of a urinal formed in the bowl part. Figures 7 to 11 are longitudinal cross-sectional views showing the main parts of the sludge-filled opening closed with clay. Figure 8 is a cross-sectional view of the mold before it is filled with slurry, and Figure 9 is a longitudinal cross-section of the urinal obtained by disassembling the mold. 10 is a sectional view taken along the line - in FIG. 9, and FIG. 11 is a longitudinal sectional view showing the main part in a state where the mud removal passage is closed. 11... Gypsum divided piece group, 12... Gypsum divided piece,
14... Slurry supply and drainage pipe, 15... Molding mold, 16...
Urinal base, 16f...opening, 17...clay,
D...Casting space, E...Casting space, F...Communication passage, f...Wall surface.

Claims (1)

[Scope of Claims] 1. A casting space for forming an inner corner cavity at the intersection between the front of the pot part and the front of the apron part and a casting space for forming the rim passageway are communicated by a communication passage. In the sludge casting method for obtaining a stall urinal base using a mold, the communication passage of the mold is formed from a non-water-absorbing wall surface, and the communication passage in front of the bowl of the obtained urinal base. 1. A method for casting a stall urinal base for removing mud, the method comprising: closing an unfilled opening formed at a location corresponding to one end with clay. 2 Consisting of a group of combined gypsum divided pieces, a casting space for forming an inner corner cavity at the intersection of the front of the pot part and the front of the apron part, and a casting space for forming the rim passageway are inside. The stall urinal base is formed in the above-mentioned gypsum segment group, and both casting spaces are communicated with each other through a communication passage formed in the plaster segment constituting the plaster segment group, and one end of the slurry supply and drain pipe is opened in one of the casting spaces. In the mold for mud removal casting,
A mold characterized in that the communication passage is formed from a non-water-absorbing wall surface.