JP3044329U - Formwork - Google Patents

Abstract

(57) [Abstract] [Purpose] In the molding of secondary concrete products, by minimizing the use of vibrators, the noise inside the factory is reduced and the noise pollution to the work environment and the neighborhood is improved. In addition, the finished surface of the top surface of the concrete product is beautifully finished with high dimensional accuracy. [Structure] A formwork for a secondary concrete product, characterized in that all openings can be closed and at least one concrete pressure inlet is provided. further,
A more excellent formwork can be obtained by providing a small hole for air bleeding and confirmation of concrete filling.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a concrete secondary product formwork for molding concrete secondary products such as groove lids, gutter blocks, and box culverts.

[0002]

[Prior art]

 In the conventional concrete secondary product formwork, an opening is provided on the upper surface, concrete is injected from this opening, the formwork is vibrated by a vibrator, and the concrete is spread throughout the formwork. The iron was finished evenly.

[0003]

[Problems to be solved by the device]

 In the above conventional formwork, vibration by a vibrator is indispensable, so there is a bad working environment due to noise in the factory and noise pollution to neighboring residents.The top surface is finished to make it even There is a problem that the surface becomes rough and the dimensional accuracy is poor. The present invention has been made to solve such problems.

[0004]

[Means for Solving the Problems]

 The present invention is a concrete secondary product formwork characterized in that all openings can be closed and at least one concrete pressure inlet is provided. Furthermore, by providing a small hole for air bleeding and confirmation of concrete filling, a more excellent formwork can be obtained.

[0005]

[Action]

 In the formwork of the present invention, concrete is fed from the pressurizing port under pressure, so that the concrete is easily spread inside the formwork, and the use of the vibrator can be minimized. In addition, since the upper opening of the conventional mold is closed, the upper finished surface is also formed in contact with the surface of the mold, resulting in a beautiful finish and dimensional accuracy. In addition, in a formwork that has a small hole for air bleeding and confirmation of concrete filling, because air escapes from the small hole, it is easy to fill the concrete in the formwork. Since the mortar component of spills out, it can be confirmed that the concrete is filled.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment. 1 is a sectional view of the mold 1 of the embodiment, FIG. 2 is a sectional view of the mold 1 in a demolded state, FIG. 3 is a perspective view of the mold 1, and FIG. 4 is an enlarged view of a small hole 9. It should be noted that the drawings omit the details such as the tightening device.

The mold 1 is for molding a plate-shaped concrete secondary product such as a groove lid, and is composed of a side plate 2, a bottom plate 3, a lid 4 and a base 5, and forms a closed space as a whole. There is. The side plate 2 is hinged to the base 5 by the hinge 7, and the lid 4 is hinged to the side plate 2 by the hinge 8. When removing the concrete product 14, the mold is opened as shown in FIG. The lid 4 is provided with one concrete pressure inlet 6 and a large number of small holes 9 for venting air and confirming concrete filling.

As shown in FIG. 1, with the mold 1 closed, a concrete pressure inlet 6 is connected to a hose 10 of a concrete pressure pump (not shown), and concrete is pressure-fitted. When the concrete is filled in the form, the mortar component of the concrete overflows from the small holes 9, so the pumping is stopped at that stage. Then, the hose 10 is removed from the concrete pressure inlet 6, the formwork 1 is put into a curing chamber, and steam curing is performed. When the curing is completed, the mold is opened as shown in Fig. 2, the concrete product 14 is demolded, and the pressure mark 11 and small hole mark 12 remaining on the upper surface of the product are scraped off with a wrench or lightly sanded. Repair by doing As shown in FIG. 4, the small hole 9 is provided with a taper in the shape of a trumpet. Therefore, when the mold is opened, the lid is lightly tapped, so that the mortar waste 13 easily falls and the mold Cleaning work can be performed easily.

FIG. 5 is a sectional view of a mold 20 for molding a box culvert according to another embodiment. The mold frame 20 is composed of a side plate 21, a bottom plate 22, a lid 23, an inner mold 24, and a base 25, and forms a rectangular tube-shaped closed space as a whole. The lid 23 is hinged to the side plate 21 by a hinge 26, and the side plate 21 is hinged to a base 25 by a hinge 27. The lid 23 is provided with one concrete pressurizing port 28 and a large number of small holes 29 for venting and confirming the concrete filling. A large number of small holes 31 for bleeding air and for confirming concrete filling are also formed in a so-called "shade" portion 30, which corresponds to the bottom of the inner mold 24. A filter 33 is attached to the lower side of the canister 30 to allow air and water to pass through but prevent concrete from overflowing. For example, as described in Japanese Utility Model Laid-Open No. 61-31815, this part is the part where the concrete is the most difficult to spread, and by confirming that this part is also filled with concrete, a beautiful finished surface can be obtained. Can be obtained.

Regarding the mold release of the mold 20, the lid 23 and the side plate 21 are opened for the outer mold as in the case of the mold 1, and the inner mold is set to the holder 30 as described in the above publication. Is pulled out upward, and the side portion is narrowed inward by the hinge 32. The drawing does not show details such as the device for demolding the inner mold.

[0011] As in the above-mentioned embodiment, since the mark of the pressure inlet and the mark of the small hole remain on the upper surface of the concrete product molded by the mold 20, the repair process is performed in the same manner.

FIG. 6 is a sectional view of a mold 40 of still another embodiment. The mold 40 is also for molding a box carburt and is similar to the mold 20 described above. The form 40 is different from the form 20 in that the concrete pressure inlet is provided not on the lid 41 but on the cutting 43. The lid 41 is provided with a large number of small holes 42 for bleeding air and for confirming the filling of concrete, but the pressure inlet 44 is provided at the tip 43. Therefore, when concrete is pumped into the formwork 40, concrete is filled from the lower part to the upper part, and the “side” part where the finished surface is most likely to be rough is surely filled with concrete and always beautiful. You can expect the finish. However, the concrete must be pushed up to the top, so it is necessary to pump it concretely.

The concrete pressure feed port is not limited to one place, and a plurality of concrete pressure feed ports may be used in the case of a mold for molding a large product. Also, the place to install the concrete pumping port can be appropriately located, but it is desirable to install it at a position where the smooth repair process can be easily performed.

[0014]

[Effect of the invention]

 In the formwork of the present invention, concrete is fed by applying pressure from the pressure inlet, so that concrete can be easily spread inside the formwork, and the use of the vibrator can be minimized. Therefore, it is possible to reduce the noise in the factory and improve the work environment and the noise pollution to the neighborhood. Further, since the opening on the upper surface of the conventional mold is closed, the finished surface of the upper surface of the concrete product is also formed by the surface of the mold, which can be beautifully finished and the dimensional accuracy can be secured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a mold 1 according to an embodiment.

FIG. 2 is a sectional view of the mold 1 in a detached state.

FIG. 3 is a perspective view of the mold 1. FIG.

FIG. 4 is an enlarged view of a small hole 9;

FIG. 5 is a cross-sectional view of the mold 20.

FIG. 6 is a sectional view of the mold 40.

[Explanation of symbols]

 1 Formwork 2 Side plate 3 Bottom plate 4 Lid 5 Base 6 Pressurization port 7 Hinge 8 Hinge 9 Small hole 10 Hose 11 Inlet mark 12 Small hole mark 13 Mortar waste 14 Concrete product 20 Formwork 21 Side plate 22 Bottom plate 23 Lid 24 Inner mold 25 Base 26 Hinge 27 Hinge 28 Press-in 29 Small hole 30 Insert 31 Small hole 32 Hinge 33 Filter 40 Form 41 Cover 42 Small hole 43 Insert 44 Press-in

Claims (4)

[Utility model registration claims] 1. A formwork for a secondary concrete product, wherein all openings can be closed and at least one concrete pressure inlet is provided. 2. The formwork according to claim 1, wherein a small hole for deflating air and confirming filling of concrete is provided in part. 3. A formwork for a secondary concrete product, characterized in that a lid that can be opened and closed is provided at an opening on the upper surface, and that the lid is provided with a concrete pressure inlet and a large number of small holes for air release and confirmation of concrete filling. 4. The formwork according to claim 2, wherein the small holes are tapered in a trumpet shape.