JPH0353847Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a synthetic resin water drop prevention plate for preventing water droplets from falling onto concrete products during curing.

Conventional technology When manufacturing conventional concrete products,
As shown in FIG. 5, concrete 10 is poured into the inner and outer molds 11 and 12, vibrated to remove the air inside, and the concrete is placed in parallel both vertically and horizontally in the curing chamber 13, and the curing chamber 13 is sealed. Then, steam at 80 to 90° C. is injected for heating and curing, thereby increasing the usage efficiency of the molds 11 and 12, allowing mass production, and reducing costs. 14 is a mold support made of a square pipe, and 15 is a chevron-shaped spacer placed on the mold 12.

Problems to be Solved by the Invention By the way, when curing as described above, the molds 11, 12 and the concrete 10 are cold immediately after the start of curing, so steam does not flow into the molds 11, 12 and the concrete 10 until they warm up. The water shrinks around the mold support 14, turns into large water droplets, and falls onto the concrete 10 at a lower level, which has not yet hardened.

These fallen water droplets form a recess on the upper surface of the concrete 10, and this recess not only impairs the appearance of the product, but also has a negative effect on its strength.

Therefore, the purpose of this invention is to provide a water drop prevention plate that prevents water droplets from falling on the upper surface of concrete during curing, and does not impair the appearance or adversely affect the strength.

Means for Solving the Problems According to this invention, the object is to provide a flat body 2 having a size that covers the upper opening of a mold for forming concrete products, and a flat body 2 that is attached to both sides in the longitudinal direction and that is attached to the upper part of the mold. This is achieved by providing a synthetic resin water drop prevention plate 1 having an engageable support 3.

Function In the case of the water drop prevention plate 1 made of synthetic resin as described above, the spacer 1 is placed on the molds 11 and 12.
When the support 3 is locked to the plate 5, the upper openings 16 of the molds 11 and 12, which are indicated by chain lines in FIG. It is caught and does not fall onto the concrete 10. In addition, since the water droplet prevention plate 1 is made of synthetic resin and has a small heat capacity as described above, the molds 11 and 12 are removed immediately after the start of curing.
Therefore, water droplets will not fall from the water drop prevention plate 1.

Embodiment 1 is a water droplet prevention plate made of synthetic resin. As shown in FIG. It has a plurality of supports 3 attached to. The support 3 is attached to the main body 2 as shown in FIG.
It consists of a flat plate part 4 that is placed on a flat plate part 4 and a bent plate part 5 formed at one end thereof. The shape is such that it fits and engages the spacer 15 on the mold 2. A through hole is provided in the flat plate body 1 at a position opposite to the elongated hole 6, and both members 2 and 3 are joined by a bolt nut 7 passing through this through hole and the elongated hole 6. The position of the bent plate portion 5 relative to the spacer 15 is adjusted through the elongated hole 6.
It is done using.

The prevention plate 1 may be made of any kind of synthetic resin material as long as it can achieve its purpose, but fiber-reinforced plastic (FRP) is particularly preferred.

Effects of the device This device is as described above, and has a flat body and a support attached in the longitudinal direction of the body, and is adapted to be fitted over the top of the mold in the curing chamber. The water droplets that occur during curing and fall onto the mold are caught by the flat body of this invention, preventing them from falling onto the top of the concrete exposed to the outside through the mold opening. To obtain a concrete product which is not only superior in appearance but also superior in strength since no recesses are formed in the upper part of the concrete due to falling water droplets. Furthermore, since it is made of synthetic resin, it has the advantage of being lightweight, durable, and inexpensive.

[Brief explanation of the drawing]

Figure 1 is a plan view of an embodiment of this invention; Figures 2A and 2B are enlarged plan views and front views of the same support;
FIG. 3 is a drawing showing the state of use of this invention, FIG. 4 is an enlarged view of the portion shown in FIG. 3, and FIG. 5 is a drawing similar to FIG. 3 showing the curing state of a conventional concrete product. 1...Water droplet fall prevention plate, 2...Flat-shaped main body, 3
...Support, 4...Flat plate part, 5...Bending plate part, 6
... Long hole, 7 ... Bolt, 10 ... Concrete, 11 ... Inner mold, 12 ... Outer mold, 15 ...
Spacer.

Claims (1)

[Scope of utility model registration request] A composition characterized by having a flat plate-like body 2 having a size to cover the upper opening of a mold for forming concrete products, and supports 3 attached to both longitudinal sides of the body and capable of engaging with the upper part of the mold. Resin water drop prevention plate.