JPS584650Y2 - Core metal fittings for hollow concrete block molding forms - Google Patents

Description

【考案の詳細な説明】 本考案は、空胴コンクリートフロックの空胴部分を形成
する中子金具の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement of a core metal fitting that forms a hollow part of a hollow concrete flock.

通常のコンクリートブロックは重量の軽減を図るために
空胴部分をもつ。Ordinary concrete blocks have hollow parts to reduce weight.

そのつくり方には種々の方法があるが、製品を成型後下
方に脱型する所謂下抜式成型法においては、型枠の上部
に取付けられた支持杆によって中子金具を型枠内に垂設
し型枠下面に受板を当ててから、上部よりコンクリート
材料を給材し、加圧振動を与えて成型し、上部より押型
をもって製品を受板に載せたまま下方へ押出すようにし
ている。There are various ways to make them, but in the so-called bottom-pull molding method, in which the product is demolded downward after molding, the core metal fittings are suspended inside the formwork by support rods attached to the top of the formwork. After placing the receiving plate on the bottom of the formwork, feed the concrete material from above, apply pressure vibration to form the product, and press the mold from above to push the product downward while it is placed on the receiving plate. There is.

この場合、コンクリート材料が湿潤すぎると、給材時に
型枠内の下部の空気が十分に抜けず、製品に陥没部が発
生して、欠損製品が連続して発生するようになる。In this case, if the concrete material is too wet, the air in the lower part of the formwork will not be sufficiently removed during material feeding, resulting in the creation of depressed parts in the product, resulting in a continuous occurrence of defective products.

特に防水ブロックを製造する目゛的で、コンクリート材
料の空気含量を減するべく含水量を多くしで軟練りにす
るようなときにかかる問題が多く発生する。This problem often occurs especially when the purpose of manufacturing waterproof blocks is to increase the moisture content of concrete material to make it softer in order to reduce the air content.

このため、従来は中子金具の上部に空気孔を設けたもの
、あるいは支持杆の下方部に平行して中子金具上部に空
気孔を設けたもの、さらには給材後、加圧する押型の力
を借りて、中子金具内に組込オれたバネにより、中子金
具上部の空気孔を開口するようにしたものなど、種々の
対策が提案されているが、コンクリート材料が軟練りの
ために、これらの空気孔は何れも詰り易く、その目的力
果せなくなることが多い。For this reason, in the past, air holes were provided in the upper part of the core metal fitting, or air holes were provided in the upper part of the core metal fitting parallel to the lower part of the support rod, and furthermore, the press mold that was pressurized after feeding the material was used. Various countermeasures have been proposed, such as opening the air holes at the top of the core metal fittings using a spring built into the core metal fittings with the help of force. As a result, these air holes are easily clogged, often defeating their purpose.

本考案は、この点に鑑みなされたもので、中子金具の支
持杆も中子金具とともに中空とし、型枠下部の空気を中
子金具と支持杆の内部を通じて外部に逃がすようにした
ものである。The present invention was developed in view of this point, and the support rod of the core metal fitting is also hollow along with the core metal fitting, so that the air at the bottom of the formwork can escape to the outside through the inside of the core metal fitting and support rod. be.

これを図面に示す実施例によりさらに詳細に説明する。This will be explained in more detail with reference to embodiments shown in the drawings.

第１図は正面図で、中空中子金具１が中空支持杆２に垂
設された状態を示すものである。FIG. 1 is a front view showing a state in which the hollow core metal fitting 1 is vertically installed on the hollow support rod 2. FIG.

図中３は中空支持杆２を型枠に取付けるための取付座を
示す。In the figure, 3 indicates a mounting seat for mounting the hollow support rod 2 to the formwork.

第２図は平面図で中空支持杆２は中空中子金具１よりも
細くつくり、コンクリート材料や押型の挿入になるべく
邪魔にならないようにしである。FIG. 2 is a plan view, and the hollow support rod 2 is made thinner than the hollow core metal fitting 1 so as not to get in the way of inserting the concrete material or the mold as much as possible.

第３図は第２図のＡ−Ａ断面を示し、中空中子金具１と
中空支持杆２との中空部は連通孔４をもって連通しであ
る。FIG. 3 shows a cross section taken along the line AA in FIG. 2, and the hollow portions of the hollow core fitting 1 and the hollow support rod 2 are in communication through a communication hole 4.

そして、中空中子金具１の下端と中空支持杆２の両端は
開放されている。The lower end of the hollow core fitting 1 and both ends of the hollow support rod 2 are open.

中空中子金具１の該開放下端は、ブロック成型の際仮想
線で示した受板５が当接する。The open lower end of the hollow core fitting 1 comes into contact with a receiving plate 5 shown by phantom lines during block molding.

第４図は、第２図のＢ−Ｂ断面を示し、中空支持杆２が
縦長の隋円筒状をなし、中空中子金具１と連通孔４をも
って連通されていることを示している。FIG. 4 shows a BB cross section in FIG. 2, and shows that the hollow support rod 2 has a vertically long cylindrical shape and is communicated with the hollow core fitting 1 through a communication hole 4.

かかる中空中子金具１を備えた型枠をもって空胴コンク
リートブロックを製造するには、まず受゛板５を中空中
子金具１の開放下端並びに型枠下端に当接し、型枠と中
空中子金具１とにより形成される空間内に上部よりコン
クリート材料を振動を与えながら供給する。To manufacture a hollow concrete block using a formwork equipped with such a hollow core metal fitting 1, first, the receiving plate 5 is brought into contact with the open lower end of the hollow core metal fitting 1 and the lower end of the formwork, and the formwork and the hollow core metal fitting 1 are brought into contact with each other. Concrete material is supplied from above into the space formed by the metal fittings 1 while being vibrated.

コンクリート材料が充填し終ったならば上部より押型を
当てて振動加圧成型する。Once the concrete material has been filled, a mold is applied from above to form the concrete under vibration pressure.

振動時に中空中子金具１の開放下端と受板５とは微細な
離接を繰り返し、その僅かに離れたときに型枠内下部に
ある空気が、中空中子金具１の中空内部に入り込み、つ
いで連通孔４を通って中空支持杆２の中空部に入り外気
中に抜ける。During vibration, the open lower end of the hollow core metal fitting 1 and the receiving plate 5 repeat minute contact and separation, and when they slightly separate, the air in the lower part of the formwork enters the hollow interior of the hollow core metal fitting 1. Then, it passes through the communication hole 4, enters the hollow part of the hollow support rod 2, and exits into the outside air.

このように本考案にトいては成型途中において型枠底部
の空気が自由に型枠外に排出され、それは含窒気量の少
ないコンクリート材に卦いても、また含水量の多い軟練
りコンクリート材においても変りがないから、何れの場
合でも製品に陥没部が発生するようなことがない。In this way, with the present invention, the air at the bottom of the formwork is freely discharged outside the formwork during molding, and this is true even for concrete with a low nitrogen content and for soft concrete with a high water content. Since there is no difference between the two, there will be no depression in the product in either case.

ヌ、中空中子金具ｌ下端と受板５とか振動時に離れたと
きにコンクリート材料の一部が食い込むことがあっても
振動時のつぎの接触時には排除され、従来のもののよう
に詰るようなことがない。Even if a part of the concrete material may dig into the lower end of the hollow core metal fitting l and the receiving plate 5 when they are separated during vibration, it will be removed when they next come into contact during vibration, and there will be no clogging like with conventional ones. There is no.

したがって、本考案によれば常に均一な空胴コンクリー
トフロックが得られ、寸た防水を目的としたコンクリー
トブロックが容易に成型し得る効果がある。Therefore, according to the present invention, a uniform hollow concrete flock can always be obtained, and a concrete block for the purpose of waterproofing can be easily molded.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の実施例の正面図、第２図は同平面図、
第３図は第２図に釦けるＡ−Ａ断面図、第４図は同Ｂ−
Ｂ断面図である。 １・・・・・仲空中子金具、２・・・・・・中空支持杆
、３・・・・・・取付座、４・・・・・・連通ＪＬ ５
・・・・・・受板。Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a plan view of the same,
Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is a cross-sectional view of button A-A in Figure 2.
It is a sectional view of B. 1...Hollow hollow metal fitting, 2...Hollow support rod, 3...Mounting seat, 4...Communication JL 5
・・・・・・Socket plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 下端が開口した中空中子金具を、型枠上部に取付けた中
空支持杆に型枠内において垂設し、該中空中子金具と中
空支持杆との各中空部を連通孔をもって連通してなるこ
とを特徴とする空胴コンクリートブロック成形型枠の中
子金具。A hollow core metal fitting with an open bottom end is hung vertically within the formwork from a hollow support rod attached to the upper part of the formwork, and the hollow parts of the hollow metal fitting and the hollow support rod are communicated with each other through a communication hole. A core metal fitting for a hollow concrete block molding form.