JPH0323903A - Porous gypsum mold and manufacture thereof - Google Patents
Porous gypsum mold and manufacture thereofInfo
- Publication number
- JPH0323903A JPH0323903A JP1158554A JP15855489A JPH0323903A JP H0323903 A JPH0323903 A JP H0323903A JP 1158554 A JP1158554 A JP 1158554A JP 15855489 A JP15855489 A JP 15855489A JP H0323903 A JPH0323903 A JP H0323903A
- Authority
- JP
- Japan
- Prior art keywords
- porous
- mold
- plaster
- gypsum
- pipes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052602 gypsum Inorganic materials 0.000 title abstract description 24
- 239000010440 gypsum Substances 0.000 title abstract description 24
- 238000004519 manufacturing process Methods 0.000 title description 14
- 230000035699 permeability Effects 0.000 claims abstract description 16
- 239000011162 core material Substances 0.000 claims abstract description 7
- 239000011505 plaster Substances 0.000 claims description 50
- 238000009415 formwork Methods 0.000 claims description 12
- 230000005587 bubbling Effects 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 3
- 229920002554 vinyl polymer Polymers 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 239000012212 insulator Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は例えば懸垂碍子等の製造に使用される多孔質石
膏型及びその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a porous gypsum mold used, for example, in manufacturing suspended insulators, and a method for manufacturing the same.
（従来の技術）
例えば懸垂碍，子等の製造には従来から例えば特公昭５
６−１４４５１号公報に記載されるようなセラもツタ粒
子を合或樹脂により固化した内外２層の多孔質セラミッ
ク型が使用されているが、きわめて高価であるうえに緻
密な表面層の一部が破損したような場合にも全体を廃棄
しなければならず、経済性の点で問題があった。そこで
本発明者等は比較的安価な多孔質石膏を用いて通気量の
多い同様な戒形型を製作することを試みたが、戊形体の
形状が大きく重量の重い碍子製造に適する十分な通気性
を有する石膏型はできなかった。(Prior art) For example, in the manufacture of suspension racks, etc., for example,
A porous ceramic mold with two layers, an inner and outer layer, made by combining ivy particles or solidifying them with resin, as described in Publication No. 6-14451, is used, but it is extremely expensive and only a part of the dense surface layer is used. Even in the event of damage, the entire product must be discarded, which poses an economical problem. Therefore, the present inventors attempted to manufacture a similar mold with a large amount of ventilation using relatively inexpensive porous gypsum. It was not possible to create a plaster mold with a characteristic.
（発明が解決しようとする課題）
本発明は上記したような従来の問題点を解決して、安価
であること、碍子等の製造に適する十分な通気性と表面
の滑らかさを持つこと、補修が簡単に行えること等の条
件を満足させることのできる多孔質石膏型及びその製造
方法を提供するために完威されたものである。(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and has the following features: low cost, sufficient air permeability and smooth surface suitable for manufacturing insulators, etc. The present invention has been developed to provide a porous plaster mold and a method for manufacturing the same, which can satisfy the following conditions:
（課題を解決するための手段）
本発明は、内部に多孔管が埋設された多孔質石膏を型枠
の内部に鋳込んだ多孔質石膏型であって、多孔質石膏の
多孔管より表面側の部分の通気度を多孔管より型枠側の
部分の通気度よりも大としたことを特徴とする多孔質石
膏型に関する第１の発明と、芯材に形状を保持させた多
孔管を内型の外部に内型から所定間隔を保持した状態で
セットし、型枠を被嵌設置した後、型枠と内型との間隙
部に石膏を鋳込み、この石膏が半硬化状態にあるときに
内型を離型し多孔管に圧縮空気を導入継続して石膏内表
面より水分を泡出させながら石膏を硬化させ、主として
多孔管よりも表面側の部分の水分泡出通路を連続した多
孔質通路として形成することを特徴とする多孔質石膏型
の製造方法に関する第２の発明とからなるものである。(Means for Solving the Problems) The present invention provides a porous gypsum mold in which porous gypsum with porous pipes embedded therein is cast into a mold, the surface side of the porous gypsum being closer to the surface than the perforated pipes of the porous gypsum. A first invention relating to a porous gypsum mold, characterized in that the air permeability of the part of the mold is higher than that of the part on the side of the mold from the porous pipe, and a porous pipe with a core material that retains its shape. After setting the outside of the mold at a predetermined distance from the inner mold and fitting the mold, plaster is cast into the gap between the mold and the inner mold, and when this plaster is in a semi-hardened state, The inner mold is released and compressed air is continuously introduced into the porous tube to harden the plaster while causing moisture to bubble out from the inner surface of the plaster, creating a porous structure with continuous moisture bubbling passages mainly on the surface side of the porous tube. and a second invention relating to a method for manufacturing a porous plaster mold characterized in that it is formed as a passage.
（実施例）
次に本発明を図示の実施例によって更に詳細に説明する
。(Example) Next, the present invention will be explained in more detail with reference to illustrated examples.
第１図において、（１）はアルもニウム等の金属からな
る型枠、（２）はこの型枠（１）の内部に鋳込まれた連
続気孔を有する多孔質石膏であって、その表面（３）は
本実施例では懸垂碍子の外表面形状に対応する形状とさ
れている。多孔質石膏（２）としては高強度で大きい通
気性を持たせることができる程度の石膏が選択される。In Figure 1, (1) is a mold made of metal such as aluminum, and (2) is porous plaster with continuous pores cast inside this mold (1), and its surface In this embodiment, (3) has a shape corresponding to the outer surface shape of the suspended insulator. As the porous gypsum (2), a gypsum with high strength and high air permeability is selected.
（４）はこの多孔質石膏（２）の内部に表面（３）の形
状に沿って埋設された多孔管である。多孔管（４）とし
ては例えばサイジングチューブと呼ばれるガラス繊維チ
ューブが用いられる。このような多孔管（４）は扇風機
のガードのような形状の鉄製の芯材（５）の外側にスパ
イラル状に巻付けられており、その基部はビニール管０
ωに接続されて型枠（１）の下端部中央の注入治具（６
）内に達している。(4) is a porous pipe buried inside this porous gypsum (2) along the shape of the surface (3). As the porous tube (4), for example, a glass fiber tube called a sizing tube is used. Such a perforated pipe (4) is spirally wound around the outside of an iron core material (5) shaped like the guard of an electric fan, and its base is wrapped around a vinyl pipe.
The injection jig (6
) has been reached.
このようにして本発明においては多孔質石膏（２）が多
孔管（４）によって表面（３）側と型枠（１）側に２分
されるが、多孔質石膏（２）のうちの表面（３）側の部
分（７）の通気度が型枠（１）側の部分（８）の通気度
よりも大とされている。即ち、実施例の場合には表面（
３）側の部分（７）の通気度が６０±２０ｍｍＡｑ以下
とされているのに対し、型枠（１）側の部分（８）の通
気度は５ｍｍＡｑ以下である。このような通気度の差の
与え方については後述する。なお、（９）は型枠（１）
の下端部付近の内側に埋設された非通気性石膏である。In this way, in the present invention, the porous plaster (2) is divided into two by the porous pipe (4) into the surface (3) side and the formwork (1) side. The air permeability of the portion (7) on the (3) side is greater than the air permeability of the portion (8) on the formwork (1) side. That is, in the case of the example, the surface (
The air permeability of the portion (7) on the 3) side is 60±20 mmAq or less, whereas the air permeability of the portion (8) on the formwork (1) side is 5 mmAq or less. How to provide such a difference in air permeability will be described later. In addition, (9) is formwork (1)
It is a non-porous plaster buried inside near the lower end of the.
この非通気性石膏（９）は型の中央部からの空気の噴出
を防止する。また（１１）は注入治具（６）の外側に設
けられた空気吹込みあるいは吸引用のノズルである。This non-porous plaster (9) prevents air from escaping from the center of the mold. Further, (11) is a nozzle for blowing or suctioning air provided on the outside of the injection jig (6).
次にこのような多孔質石膏型の製造方法について第３図
に基づいて説明する。Next, a method for manufacturing such a porous plaster mold will be explained based on FIG. 3.
先ず第２図に示すように、鉄製の芯材（５）の外側にサ
イジングチューブよりなる多孔管（４）をスパイラル状
に巻付けることにより所定形状を保持させたものを作威
し、これを例えば懸垂碍子の外表面に対応する内型０の
の外表面から所定寸法はなした位置に図示するとおり、
スペーサ一０９上に載置して浮上がらせた状態でセット
する。なおこれに先立ち、石膏等よりなる内型（１２）
の外表面上には石けん水のような離型剤を塗布しておき
、注型石膏の半硬化状態での離型性を良くするものとす
る。First, as shown in Fig. 2, a porous tube (4) made of a sizing tube is wound spirally around the outside of an iron core material (5) to maintain a predetermined shape. For example, as shown in the figure, at a position a predetermined distance from the outer surface of the inner mold 0 corresponding to the outer surface of the suspended insulator,
Place it on the spacer 109 and set it in a floating state. Prior to this, an inner mold (12) made of plaster, etc.
A mold release agent such as soapy water is applied to the outer surface of the cast plaster to improve mold release properties when the cast plaster is in a semi-hardened state.
次に型の外面形状を決めるアルξニウム製の型枠（１）
を内型（１２）および多孔管（４）の外側に図示する如
く被嵌し、セットする。次に多孔管（４）の基部に接続
されたビニール管Ｇｏ）の先端を引き出して型枠（１）
の注入治具（６）内にセットし、第３図に矢印で示すよ
うに注入治具（６）に沿わせて脱気された石膏（２）を
型枠（１）と内型（１２１との間の間隙Ｏψに注入する
。石膏（２）は多孔管（４）がセットされた空間内部を
下方より順次埋めて上昇し、石膏（２）の上面が注入治
具（６）の近くまで達したときに注入を止め、その上に
石膏（２）とは異なる非通気性石膏（９）を注入する。Next, the aluminum formwork (1) determines the external shape of the mold.
The inner mold (12) and the outside of the porous tube (4) are fitted and set as shown in the figure. Next, pull out the tip of the vinyl pipe (Go) connected to the base of the perforated pipe (4) and form the formwork (1).
Place the degassed plaster (2) in the injection jig (6) along the injection jig (6) as shown by the arrow in Fig. The plaster (2) fills the space in which the porous pipe (4) is set from below and rises until the upper surface of the plaster (2) is near the injection jig (6). When reaching this point, the injection is stopped and non-porous plaster (9), which is different from plaster (2), is poured over it.
なお、この場合サイジングチューブよりなる多孔管（４
）は注入石膏（２）により押し潰されることはない。In addition, in this case, a porous tube (4
) is not crushed by the poured plaster (2).
この状態で室温に静置すると石膏は次第に硬化するので
、半硬化状態となったときに内型θカを離型し、反転し
て図示しない空気圧送装置上にセットし、圧縮空気送気
口（図示せず）をノズル（１１）に接続し、注入治具（
６）のノズル０１）から多孔管（４）の内部に圧縮空気
を導入する。圧縮空気の導入は例えば０．５ 〜１．０
ｋｇ ／ ｃｌ、１．５ 〜２．０ ｋｇ／ｃｌｌｌ
、２．５〜３． ０ ｋｇ ／ ｃ＋Ｎと３段階に順次
に圧力を高めつつ約３０〜４０分間にわたって行われる
。このようにサイデングチューブよりなる多孔管（４）
の内側に導入された圧縮空気は繊組状の多孔管（４）を
通して半硬化状態の石膏の内部に分散して表面（内面）
側に噴出するが、多孔管（４）よりも型枠（１）の側は
型枠（１）によって密閉されているのに対し、表面（３
）の側（７）は開放されているため、空気の大部分が表
面（３）に向って石膏の内部に流れ、表面（３）の滑ら
かさを保ったまま表面（３）から内部の水分を伴った気
泡となって泡出する。そしてこのときに、多孔管（４）
よりも表面（３）側の部分（７）の石膏により多くの多
孔質通路を形威し、この部分（７）を反対側の部分（８
）よりも大きい通気度を持った多孔質石膏（２）とする
。圧縮空気を連続的に送気し、石膏（２）中の水分泡出
がほぼ終るまで３０〜４０分間この操作を継続し、この
間に注入石膏を硬化させる。この送気中の石膏硬化に伴
って、水分泡山路が微細な通気路として石膏中番こ残留
し、多孔質の石膏型が形成される。その後に赤外線加熱
等により石膏の完全硬化を行わせれば、第１の発明の多
孔質石膏型が得られることとなる。If left at room temperature in this state, the plaster will gradually harden, so when it becomes semi-hardened, the inner mold (not shown) is connected to the nozzle (11), and the injection jig (
Compressed air is introduced into the porous pipe (4) from the nozzle 01) of 6). The introduction of compressed air is, for example, 0.5 to 1.0
kg/cl, 1.5-2.0 kg/clll
, 2.5-3. The pressure is increased sequentially in three steps to 0 kg/c+N for about 30 to 40 minutes. A porous tube (4) made of siding tube like this
The compressed air introduced into the inside of the plaster is dispersed inside the semi-hardened plaster through the perforated pipe (4), and then the surface (inner surface)
However, the side of the formwork (1) rather than the perforated pipe (4) is sealed by the formwork (1), while the surface (3)
) side (7) is open, so most of the air flows towards the surface (3) and into the plaster, keeping the smoothness of the surface (3) and removing moisture from the inside. It foams out as bubbles with . And at this time, the porous pipe (4)
This creates more porous passages in the plaster of the part (7) on the surface (3) side, and this part (7) is compared to the part (8) on the opposite side.
) is porous plaster (2) with a greater air permeability than that of the material. Compressed air is continuously supplied and this operation is continued for 30 to 40 minutes until moisture bubbling in the plaster (2) has almost finished, during which time the injected plaster is allowed to harden. As the plaster hardens during this air supply, water bubbles remain in the plaster as fine ventilation channels, forming a porous plaster mold. If the plaster is then completely cured by infrared heating or the like, the porous plaster mold of the first invention will be obtained.
（作用）
このように構威された本発明の多孔質石膏型は、従来品
と同様に碍子等のセラくツクス製品の戒形型として用い
られるもので、戒形の際にはノズル（１１）から空気を
吸引して多孔管（４）を通して多孔質石膏型の内表面部
全体を減圧にし、戒形体を戒形型表面（３）に密着させ
て正確な形状に戒形を行わせることができる。また戒形
体の戒形後はノズル（１１）から多孔管（４）を通じて
多孔質石膏型の内部に空気を吹込めば、石膏型の表面（
３）から空気が噴出して戒形体を強制的に型表面（３）
から容易に離型させることができる。しかも本発明によ
れば空気は通気度の大きい表面（３）側の部分に集中的
に噴出するので例えば、戒形体の重量の重い碍子製造に
も十分な通気量が得られるうえ、通気量を低く抑えたい
碍子頭部付近には低通気量石膏を用いることにより型の
中央部分の通気度を抑えて碍子頭部が変形することを防
止することもできる。(Function) The porous plaster mold of the present invention configured as described above is used as a molding mold for ceramic products such as insulators in the same way as conventional products. ) to reduce the pressure on the entire inner surface of the porous plaster mold through the porous pipe (4), bring the precept form into close contact with the preform mold surface (3), and form the preform into an accurate shape. I can do it. In addition, after shaping the mold, air is blown into the porous plaster mold from the nozzle (11) through the porous pipe (4), and the surface of the plaster mold (
Air blows out from 3) and forces the Kai-shaped body onto the mold surface (3)
It can be easily released from the mold. Moreover, according to the present invention, air is ejected intensively to the surface (3) side where the air permeability is high, so that, for example, sufficient air flow can be obtained for manufacturing heavy insulators for precept-shaped bodies, and the air flow can also be reduced. By using low air permeability gypsum near the insulator head where it is desired to keep it low, it is possible to suppress the air permeability in the central part of the mold and prevent the insulator head from deforming.
（発明の効果）
以上に説明したように、第１の発明の多孔質石膏型は極
めて安価な石膏により例えば碍子製造に適する通気性と
表面の滑らかさをもたせることができ、成形時の内表面
部の減圧脱気により戒形型に沿った正確な戒形が可能で
、しかも離型時の内部加圧によるエアーブロー離型によ
り容易に離型を行うことができる。またこの多孔質石膏
型は表面の一部が欠けたりしたような場合にも容易に修
復することができるので、製作費のみならずメンテナン
ス費も安価なものである。(Effects of the Invention) As explained above, the porous gypsum mold of the first invention can provide air permeability and surface smoothness suitable for, for example, insulator manufacturing using extremely inexpensive gypsum, and the inner surface during molding can be By depressurizing and degassing the parts, it is possible to accurately form the mold along the mold, and moreover, the mold can be easily released by air blow mold release due to internal pressurization during mold release. In addition, this porous plaster mold can be easily repaired even if a part of the surface is chipped, so not only the production cost but also the maintenance cost is low.
更に第２の発明によれば、上記したような第１の発明の
多孔質石膏型の通気量を任意に調節することができる多
孔質石膏型を容易に製造することができる。Furthermore, according to the second invention, it is possible to easily manufacture a porous gypsum mold in which the ventilation amount of the porous gypsum mold of the first invention as described above can be adjusted as desired.
よって本発明は従来の問題点を解決した多孔質石膏型及
びその製造方法として、産業の発展に寄与するところは
極めて大なものである。Therefore, the present invention greatly contributes to the development of industry as a porous gypsum mold and its manufacturing method that solves the conventional problems.
第１図は第ｌの発明の多孔質石膏型の実施例を示す断面
図、第２図は芯材に形状を保持させた多孔管を示す正面
図、第３図は第２の発明を説明する断面説明図である。
（１）：型枠、（２）：多孔質石膏、（３）二表面、（
４）：多孔管、（５）：芯材、（７）二表面側の部分、
（８）：型枠側の部分、（１２）：内型。Fig. 1 is a sectional view showing an embodiment of the porous plaster mold of the first invention, Fig. 2 is a front view showing a porous pipe whose shape is maintained by the core material, and Fig. 3 explains the second invention. FIG. (1): Formwork, (2): Porous plaster, (3) Two surfaces, (
4): Porous pipe, (5): Core material, (7) Part on the second surface side,
(8): Formwork side part, (12): Inner mold.
Claims (1)
を型枠（１）の内部に鋳込んだ多孔質石膏型であって、
多孔質石膏（２）の多孔管（４）より表面（３）側の部
分（７）の通気度を多孔管（４）より型枠（１）側の部
分（８）の通気度よりも大としたことを特徴とする多孔
質石膏型。 ２、芯材（５）に形状を保持させた多孔管（４）を内型
（１２）の外部に内型（１２）から所定間隔を保持した
状態でセットし、型枠（１）を被嵌設置した後、型枠（
１）と内型（１２）との間隙部に石膏を鋳込み、この石
膏が半硬化状態にあるときに内型（１２）を離型し多孔
管（４）に圧縮空気を導入継続して石膏内表面（３）よ
り水分を泡出させながら石膏を硬化させ、主として多孔
管（４）よりも表面側の部分の水分泡出通路を連続した
多孔質通路として形成することを特徴とする多孔質石膏
型の製造方法。[Claims] 1. Porous plaster (2) with a porous pipe (4) embedded inside.
A porous plaster mold in which a mold is cast inside a mold (1),
The air permeability of the part (7) of the porous plaster (2) on the surface (3) side of the porous pipe (4) is greater than the air permeability of the part (8) of the porous pipe (4) on the formwork (1) side. A porous plaster mold characterized by: 2. Set the porous tube (4) whose shape is maintained by the core material (5) outside the inner mold (12) with a predetermined distance from the inner mold (12), and cover the mold (1). After fitting and installing, formwork (
Plaster is cast into the gap between 1) and the inner mold (12), and when the plaster is in a semi-hardened state, the inner mold (12) is released and compressed air is continuously introduced into the porous pipe (4) to cast the plaster. A porous material characterized by hardening the plaster while bubbling out moisture from the inner surface (3), and forming a continuous porous passage with the moisture bubbling passage mainly on the surface side of the porous pipe (4). How to make plaster molds.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1158554A JPH0323903A (en) | 1989-06-21 | 1989-06-21 | Porous gypsum mold and manufacture thereof |
| KR1019900009211A KR910000310A (en) | 1989-06-21 | 1990-06-21 | Porous gypsum mold and its manufacturing method |
| CN90103031A CN1048673A (en) | 1989-06-21 | 1990-06-21 | Graphite mould and manufacture method thereof |
| US08/167,028 US5451152A (en) | 1989-06-21 | 1993-12-16 | Porous mold for manufacturing ceramics |
| US08/452,286 US5556587A (en) | 1989-06-21 | 1995-05-26 | Method of manufacturing ceramics using a porous mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1158554A JPH0323903A (en) | 1989-06-21 | 1989-06-21 | Porous gypsum mold and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0323903A true JPH0323903A (en) | 1991-01-31 |
| JPH0476762B2 JPH0476762B2 (en) | 1992-12-04 |
Family
ID=15674245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1158554A Granted JPH0323903A (en) | 1989-06-21 | 1989-06-21 | Porous gypsum mold and manufacture thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0323903A (en) |
| KR (1) | KR910000310A (en) |
| CN (1) | CN1048673A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004518564A (en) * | 2001-03-09 | 2004-06-24 | サクミ コーペラテイヴア メッカニチ イモラ−ソチエタ コープ ア．レスポンサビリタ リミタータ | Molded member for molding articles by slip casting with clay or similar and method of manufacturing the member |
| US8306277B2 (en) | 2005-07-27 | 2012-11-06 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method, and computer program for causing computer to execute control method of image processing apparatus |
| JP2014188771A (en) * | 2013-03-27 | 2014-10-06 | Ngk Insulators Ltd | Suspension insulator molding die |
| JP2015178255A (en) * | 2014-03-20 | 2015-10-08 | 日本碍子株式会社 | Suspension insulator forming die |
| CN108022702A (en) * | 2017-12-13 | 2018-05-11 | 江西高强电瓷集团有限公司 | The glass insulator mould of included cooling mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724441A (en) * | 2018-05-29 | 2018-11-02 | 浙江泰华集成家居科技有限公司 | The open type shaping mould of gypsum lampshade |
-
1989
- 1989-06-21 JP JP1158554A patent/JPH0323903A/en active Granted
-
1990
- 1990-06-21 CN CN90103031A patent/CN1048673A/en not_active Withdrawn
- 1990-06-21 KR KR1019900009211A patent/KR910000310A/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004518564A (en) * | 2001-03-09 | 2004-06-24 | サクミ コーペラテイヴア メッカニチ イモラ−ソチエタ コープ ア．レスポンサビリタ リミタータ | Molded member for molding articles by slip casting with clay or similar and method of manufacturing the member |
| US8306277B2 (en) | 2005-07-27 | 2012-11-06 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method, and computer program for causing computer to execute control method of image processing apparatus |
| US8908906B2 (en) | 2005-07-27 | 2014-12-09 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method, and computer program for causing computer to execute control method of image processing apparatus |
| JP2014188771A (en) * | 2013-03-27 | 2014-10-06 | Ngk Insulators Ltd | Suspension insulator molding die |
| JP2015178255A (en) * | 2014-03-20 | 2015-10-08 | 日本碍子株式会社 | Suspension insulator forming die |
| CN108022702A (en) * | 2017-12-13 | 2018-05-11 | 江西高强电瓷集团有限公司 | The glass insulator mould of included cooling mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048673A (en) | 1991-01-23 |
| JPH0476762B2 (en) | 1992-12-04 |
| KR910000310A (en) | 1991-01-29 |
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