JP2002265256A - Method and device for glazing sanitary chinaware - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for glazing a sanitary chinaware by which excessive consumption of glaze is prevented and the sanitary chinaware can be efficiently produced in a high productivity. SOLUTION: For glazing the sanitary chinaware having a hollow drainage passage which is provided in the inside of a formed body and which is bent and has openings at both its end parts, a nearly spherical body having water absorbing properties and containing the glaze is charged from one end of the water drainage passage, allowed to pass through the inside of the drainage passage and discharged from the other end of the drainage passage, thereby coating the inner wall of the drainage passage with the glaze.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for glazing sanitary ware having a bent water passage.

[0002]

2. Description of the Related Art Sanitary ware Western-style toilets, stall urinals, ceramic drain traps, and the like have hollow drain channels, and the drain channels are bent to form traps. In the manufacture of sanitary ware, generally, the green body formed by the sludge casting method is dried, and before firing, the green body is dried not only on the outer surface but also on the inner wall of the drainage channel. Applying a glaze also reduces drainage resistance and prevents water absorption into the fired substrate. Conventionally, as a method of glazing the inner wall of the drainage channel, a glaze is injected into one end of the drainage channel proposed in Japanese Patent Application Laid-Open No. 3-120776, and the green body is gripped / turned by a machine such as a hand or a robot. There is known a method of applying a glaze by swinging. As another method, as shown in JP-A-3-170387, glaze is supplied to one end of a drainage channel, and then the air in the drainage channel is rapidly suctioned from an opening at the other end to provide a glaze. Is applied to the inner wall by atomization.

[0003]

However, in the case of applying the inner wall of the drainage channel by the above-mentioned conventional method for applying glaze, it is necessary to supply a sufficient amount of glaze in advance in any of the methods, and a large amount of glaze is consumed. The problem remains. That is, in the method described in JP-A-3-170387, not all of the atomized glaze adheres to the inner wall of the drainage channel, but most of the glaze is discharged to the outside of the drainage channel by the suction device. In addition, new glazes had to be continuously supplied to prevent fluctuations in glaze conditions due to a shortage of glazes during the glaze. On the other hand, in the method described in Japanese Patent Application Laid-Open No. 3-122076, it is necessary to sufficiently spread the glaze in the drainage channel in a short time of turning and rocking the green body, and the glaze in contact with the green body absorbs water. However, it was necessary to supply a large amount of glaze to such an extent that changes in the properties of the glaze slurry could be ignored. Also, in order to rotate and swing the green body, it is necessary to hold the green body manually or with a jig according to the shape of the green body, and it is dedicated to each green body having a different shape. In some cases, a jig is required, or the green body molded article may be damaged when gripping. Further, after the coating is completed, it is necessary to discharge and collect the surplus glaze remaining in the drainage channel, and the working efficiency is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an efficient and highly productive method for glazing sanitary ware which prevents excessive consumption of glaze and at the same time causes less damage. To provide.

[0005]

In order to achieve the above object, the present invention provides a method for glazing sanitary ware having a hollow water passage which is bent inside the molded body and has both ends opened.
Applying a substantially spherical body having water absorbency containing glaze from one end of the water passage, passing the inside of the water passage, and then discharging the substantially spherical body from the other end of the water passage to apply the glaze to the inner wall of the water passage. And a method for glazing sanitary ware. By performing the above method, the substantially spherical body comes into contact with the inner wall when passing through the water passage, and the glaze contained in the substantially spherical body can be uniformly applied to the inner wall of the water passage. By using this method, excess consumption of glaze can be reduced, and an efficient and highly productive glaze can be realized.

According to a second aspect of the present invention, in the method for glazing sanitary ware according to the first aspect, the substantially spherical body in the water passage is moved by reducing the pressure at the other end of the water passage. If the above method is carried out, the inside of the water passage, which is in a highly airtight state, is depressurized by the substantially spherical body recovery device and the substantially spherical body, and a suction action from the inlet to the outlet is caused by a pressure difference with the outside. It works, and it becomes possible to move a substantially spherical body. By doing so, it becomes possible to easily pass the substantially spherical body impregnated with the glaze through the water passage, reduce the consumption of the glaze, and achieve an efficient and highly productive glazing.

According to a third aspect of the present invention, in the method for glazing sanitary ware according to the first aspect, the substantially spherical body in the water passage is moved by pressing one end of the water passage into which the substantially spherical body is charged. And If the above method is carried out, the inside of the water passage, which is in a highly airtight state by the water passage and the substantially spherical body, is pressurized, and the pressure difference from the other end opened to the atmosphere causes the inlet to the outlet to be discharged. The extruding action toward the outer side works, and the substantially spherical body can be moved. By doing so, it becomes possible to easily pass the substantially spherical body impregnated with the glaze through the water passage, reduce the consumption of the glaze, and achieve an efficient and highly productive glazing.

According to a fourth aspect of the present invention, in the method for glazing sanitary ware according to any one of the first to third aspects, the substantially spherical body is passed through the water passage a plurality of times. If the above method is carried out, the substantially spherical body having water absorption containing glaze comes into contact with the inside of the water passage a plurality of times, so that the glaze can be more uniformly applied and the washing function can be improved.

According to a fifth aspect of the present invention, in the method for glazing sanitary ware according to any one of the first to fourth aspects, the substantially spherical body is an elastic body having a water absorbing property. Sea surface sponge or the like is used as the elastic body having a substantially spherical water absorbing property. Since the substantially spherical body has elasticity, the substantially spherical body can be easily deformed, and when the substantially spherical body passes through the water passage, the substantially spherical body follows the shape of the concave portion or the convex portion in the water passage. It deforms and always keeps in contact with the inner wall of the water passage, and passes through the inside of the water passage while applying glaze to the entire inner wall of the water passage, so that good glaze quality can be maintained.

According to a sixth aspect, in the method for glazing sanitary ware according to the first to fifth aspects, the diameter of the substantially spherical body is larger than the inner diameter of the water passage. With this configuration, when the substantially spherical body passes through the inside of the water passage, the substantially spherical body is compressed to a diameter along the inside diameter of the water passage by the elasticity of the substantially spherical body itself, and the confidentiality inside the water passage is increased. The efficiency of the movement of the substantially spherical body due to the reduced pressure inside the water passage can be increased, and at the same time, even when the water passage has a concave or convex shape, it can always maintain a state of contact with the inner wall of the water passage, The glaze can be uniformly applied to the entire inner wall of the water passage.

Further, according to a seventh aspect of the present invention, there is provided a glaze apparatus for glazing sanitary ware having a hollow water passage which is bent inside the molded body and open at both ends, wherein the glaze device applies a glaze to an inner wall of the water passage. A sanitary ware glaze, comprising: a substantially spherical body for performing the above, a substantially spherical body collector attached to the other end of the water passage for collecting the substantially spherical body, and a decompression device for decompressing the water passage. Provide equipment. By adopting the above-described apparatus configuration, it is possible to reduce the consumption of glaze, and realize an efficient and highly productive glazing in a waterway without breakage of the green body and recovery of excess glaze.

According to an eighth aspect of the present invention, there is provided the glaze apparatus for sanitary ware according to the seventh aspect, wherein the substantially spherical body recovery device has a lattice-like substantially spherical body recovery plate installed therein. If a lattice-shaped plate having a diameter equal to or less than the diameter of the substantially spherical body is installed in the substantially spherical body collecting device, the substantially spherical body can be sucked through the lattice-shaped plate, and the sucked substantially spherical body stops on the lattice-shaped plate, As a result, the recovery of the substantially spherical body can be performed quickly, so that the working efficiency is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of a water passage according to the present invention will be described below with reference to the drawings. Although the following description is made with reference to the drainage channel, the present invention is not limited to the drainage channel, and may be used in any hollow location where water can flow. FIG. 1 shows a glaze apparatus for a Western-style toilet bowl green body formed body 1 having a bent hollow drainage channel according to one embodiment of the present invention, and a substantially spherical body 2 for applying a glaze in the drainage channel. And a substantially spherical body recovering device 3 for recovering the substantially spherical body passing through the drainage channel, and a suction device 4 for generating a driving force for moving the substantially spherical body through the drainage channel. Further, inside the substantially spherical body collecting device 3 shown in FIG. 2, a lattice-like collecting plate 8 whose intervals are equal to or smaller than the compressed diameter of the substantially spherical body is provided.

Next, a method of glazing the drainage channel will be described. First, the suction device 4 connected to the substantially spherical body recovery device 3 is attached to the drainage outlet 7 at the lower end of the drainage channel 5 of the green body 1 having a bent drainage channel. At this time, the contact portion 12 of the substantially spherical body recovery device 3 with the drainage outlet 7 is made of an elastic material such as neoprene sponge to prevent breakage when the green body is placed and to prevent the green body from being damaged. When the drainage outlet 7 comes into contact with the contact portion 12, the elasticity of the contact portion 7 improves the adhesion to the green body molded article, and enhances the effects of decompression and pressurization in the drainage channel 5. Subsequently, the substantially spherical body 2 sufficiently impregnated with glaze is introduced from the drainage channel entrance 6 of the drainage channel 5. After the substantially spherical body is charged, the substantially spherical body is suctioned from one end on the opposite side, and the glaze is applied to the inner wall of the drainage channel by passing the substantially spherical body soaked with the glaze through the drainage channel while contacting the inside of the drainage channel. be able to.

As exemplified in FIG. 1, the drainage channel of sanitary ware has a complicated shape, and the inner diameter of the drainage channel is not always constant, and may be non-circular depending on the part. Therefore, it is preferable that the substantially spherical body has such an elasticity that it can be compressed and deformed according to the shape of the inside of the drainage channel. Further, at the same time, the substantially spherical body may have a diameter that is sufficiently large with respect to the inner diameter of the drainage channel so that, when being compressed and deformed inside the drainage channel, a space is not formed between the inner wall of the drainage channel and the inner wall is always in contact with the inner wall. preferable. Also, if the above requirements are satisfied, the substantially spherical body will not be caught on the green body molded body in the drainage channel, and an excessive load is not applied to the green body molded body, so that the drainage channel of the green body molded body may be damaged. There is no.

Here, the method of supplying glaze to the substantially spherical body may be a method of immersing the substantially spherical body in a container in which the glaze is stored and impregnating the same, or first, the substantially spherical body is put into one end of a drainage channel and drained. A method of dipping glaze into a substantially spherical body remaining at the entrance to the road and allowing the glaze to soak is preferably used, but any method may be used as long as the glaze soaks into the substantially spherical body.

Further, when the substantially spherical body passes through the drainage channel, the glaze on the surface of the substantially spherical body is gradually applied to the inner wall of the drainage channel, so that the glaze on the surface of the substantially spherical body is gradually depleted. Since the glaze permeated into the substantially spherical body continuously moves to the surface of the substantially spherical body, the entire drainage channel can be applied without a shortage of the glaze. Furthermore, since the substantially spherical body is applied while being in contact with the inner wall of the drainage channel, there is an effect of wiping off excess glaze simultaneously with the application of glaze. The glaze is uniformly applied to the inner wall of the drainage channel by both effects.

Further, since the inside of the drainage channel is hardly visible from the outside, the color of the glaze applied to the inside of the drainage channel can be arbitrarily determined, such as transparency or the same color as the sanitary ware main body. In consideration of this, generally, the application of a transparent glaze is suitably performed. As a special case, there is also a case where a color different from that of the sanitary ware main body is applied in order to give a design to the entrance of the drainage channel which is slightly visible from the upper surface of the sanitary ware.

In the present invention, the recovery plate installed inside the substantially spherical body collecting device may be in various forms such as a grid shape, a size of the grid, and a material. Needless to say, the following can be appropriately selected according to the use situation. An example of a preferred embodiment is shown in FIG. The lattice-shaped collection plate 8 installed inside the substantially spherical body recovery unit 3 is provided at the entrance of the substantially spherical body collection unit 3 so that the substantially spherical body 2 can be easily collected at the entrance of the substantially spherical body collection unit 3. It is attached near the part. In addition, the substantially spherical body recovery device 3
The inside has a columnar hollow structure, and a hollow trap 9 is formed by connecting the suction / pressing device connection port 10 so as to be located above the bottom of the column.
Even when the surplus glaze soaked into the substantially spherical body 2 is dropped when the substantially spherical body 2 is sucked, the glaze is collected in the hollow trap 9 formed at the bottom of the substantially spherical body collector 3 and is not sucked into the suction device 4. Also, there is an effect that the parts other than the substantially spherical body recovery device 3 are not stained with the glaze.

[0020]

EXAMPLES (Example 1) First, a pre-prepared sanitary ware body slurry is supplied to a casting mold, cured, demolded and dried to obtain a desired green body molded body. Next, a glaze is applied to the drainage channel of the green body 1 thus obtained. First, the substantially spherical body 2 having elasticity is immersed in a container in which the glaze is stored, so that the glaze is sufficiently impregnated. Next, a suction device 4 is connected to the drainage outlet 7 of the green body.
Is connected. In FIG. 1, the substantially spherical body recovering device 3 is fixed to the glaze table 13, and the connection between the green body forming body 1 and the substantially spherical body recovering device 3 is performed by placing the green body forming body 1 on the glaze table 13, The green body 1 and the substantially spherical body collecting device 3 are connected by aligning the position of the contact portion 12 between the road discharge port 7 and the substantially spherical body collecting device 3. Alternatively, the drainage outlet 7 of the green body 1 may be aligned with the substantially spherical body collector 3 fixed with another fixing tool or stand.

Next, the substantially spherical body 2 taken out after the glaze has been sufficiently impregnated is introduced into the drainage inlet 6 of the green body molded body to which the substantially spherical body recovery unit 3 is connected. When the approximately spherical body 2 sufficiently filled with the glaze put into the drainage channel inlet 6 is sucked by the suction device 4, the diameter of the substantially spherical body 2 is equal to or larger than the inner diameter of the drainage channel 5. Although it is once caught, the substantially spherical body 2 is compressed and deformed by the suction force of the suction device 4, and starts to pass through the inside of the drainage channel when it is compressed and deformed to the inner diameter of the drainage channel or less. When moving inside the drainage channel in this way, the substantially spherical body 2 moves inside the drainage channel while contacting the inner wall of the drainage channel, and penetrates into the substantially spherical body 2 by contact between the inner wall of the drainage channel and the substantially spherical body 2. A glaze is applied inside the drain. The green body compact with the glaze applied to the drainage channel is then applied with a glaze of a predetermined color to a required portion of the surface of the remaining molded body, and then conveyed to the next firing step, where it is fired.
It becomes a final product after a shipping inspection process.

(Example 2) When the glaze is applied to the drainage channel of the green body 1 obtained in the same manner as in Example 1, the glaze is first stored in the substantially spherical body 2 having elasticity. Soak in the container and soak the glaze. Next, the substantially spherical body recovery device 3 connected to the suction device 4 is connected to the drain outlet 7 of the green body. The substantially spherical body 2 taken out after the glaze has been sufficiently impregnated is introduced into the drainage inlet 6 of the green body formed body to which the substantially spherical body recovery unit 3 is connected. The substantially spherical body 2 sufficiently filled with the glaze put into the drainage channel inlet 6 is removed from the suction device 4.
When the suction is performed, the diameter of the substantially spherical body 2 is equal to or larger than the inner diameter of the drainage channel 5, so that the substantially spherical body 2 is temporarily caught in the vicinity of the drainage channel inlet 5. When it is compressed and deformed below, it starts to pass through the inside of the drainage channel. When moving inside the drainage channel in this way, the substantially spherical body 2 moves inside the drainage channel while contacting the inner wall of the drainage channel, and penetrates into the substantially spherical body 2 by contact between the inner wall of the drainage channel and the substantially spherical body 2. A glaze is applied inside the drain.

Further, the suction device 4 connected to the substantially spherical body recovery device 3 is removed from the connection port 10 of the substantially spherical body recovery device 3, and the pressurizing device 11 is connected to the connection port 10 of the substantially spherical body recovery device 3. When the substantially spherical body 2 is pressurized by the pressurizing device, the substantially spherical body 2 is temporarily caught in the vicinity of the drainage outlet 7, but is compressed and deformed by the pressing force of the pressurizing device 11 and is compressed and deformed to the inner diameter of the drainage passage or less. It starts to pass through the inside of the drainage channel.
Thus, when moving inside the drainage channel, the substantially spherical body 2 moves inside the drainage channel while contacting the inner wall of the drainage channel, and penetrates into the substantially spherical body 2 by contact between the inner wall of the drainage channel and the approximately spherical body 2. The glaze is applied again inside the drain. Next, after a glaze of a predetermined color is applied to a required portion of the surface of the remaining molded body, the glaze is conveyed to a subsequent baking step, and is subjected to a baking and shipping inspection step to become a final product. When the substantially spherical body is passed through the drainage channel a plurality of times in this way, the glaze can be applied evenly to the inner wall of the drainage channel, and the resistance of the water flowing through the drainage channel can be reduced. Can be improved.

[0024]

According to the present invention, it is possible to provide an efficient and highly productive method for glazing sanitary ware while preventing excessive consumption of glaze.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a glaze apparatus according to one embodiment of the present invention.

FIG. 2 is a top perspective view showing a configuration of a substantially spherical body recovery device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Green body molded body 2 ... Substantially spherical body 3 ... Substantially spherical body recovery device 4 ... Suction device 5 ... Drainage channel 6 ... Drainage channel inlet 7 ... Drainage channel discharge port 8 ... Grid-shaped plate 9 ... Hollow trap 10 ... Connection port 11 ... Pressurizing device 12 ... Contact part 13 ... Glazing table

Claims (8)

[Claims] 1. A method for glazing sanitary ware having a hollow water passage with open ends, wherein a substantially spherical body containing glaze is introduced into the water passage from one end of the water passage. A glaze method for sanitary ware, wherein the glaze is applied to the inner wall of the water passage by discharging the substantially spherical body from the other end of the water passage after passing through the inside. 2. The method for glazing sanitary ware according to claim 1, wherein the water channel is a bent drainage channel. 3. The method for glazing sanitary ware according to claim 1, wherein a substantially spherical body in the water passage is moved by reducing or increasing the pressure inside the water passage from one end of the water passage. Item 3. The method for glazing sanitary ware according to any one of Items 2. 4. The method of glazing sanitary ware according to claim 1, wherein the substantially spherical body is passed through the water passage a plurality of times. 5. The method for glazing sanitary ware according to claim 1, wherein the substantially spherical body is elastic having water absorbency. 6. The method for glazing sanitary ware according to claim 1, wherein the diameter of the substantially spherical body is larger than the inner diameter of the water passage. 7. A glaze apparatus for glazing sanitary ware having a hollow water passage open at both ends by bending inside the molded body, said glaze device being a substantially spherical surface for applying glaze to an inner wall of the water passage. A body, a substantially spherical body collector attached to the other end of the water passage for collecting a substantially spherical body, a decompression device for decompressing the inside of the water passage, and a pressurizing device for pressurizing the inside of the water passage. A glazing device for sanitary ware, characterized in that: 8. The substantially spherical body collecting device includes a lattice plate for collecting a substantially spherical body at an upper part, a connection part connected to the decompression device and / or the pressure device at an intermediate part, and a glaze reservoir part at a lower part. 8. The apparatus for glazing sanitary ware according to claim 7, wherein the apparatus is a hollow body provided with.