JPH0762859A - Concrete form - Google Patents

Abstract

PURPOSE:To dispense with coating of a separating material before placing concrete and reduce the weight, by folding a horizontal side plate together with a molding plate at both upper and lower ends thereof and fitting the vertical side frame made of a steel square pipe at both rear right and left sides. CONSTITUTION:A molding plate 1 is made of a resin having a highly anticorrosive characteristic against concrete and an upper horizontal side plate 1a and a lower horizontal side plate 1b are bent together as a unit at both upper and lower end edges. And vertical side frames 2, 3 of steel square pipes or steel plates are fitted to bath right and left sides of the rear face of the molding plate 1. The molding plate 1 is fixed with the side frames by screws or fitting protrusions and recessions. In this case, a plurality of pierced holes 2a, 3a are formed in the vertical direction of the vertical side frames. And the frames 2, 3 are fitted together and connection bars are inserted to fix them with U-shaped metal fittings. And further, horizontal auxiliary ribs are formed as a unit in the vertical direction at the external end edges of both upper and lower side plates 1a, 1b to increase the strength of molding plate 1. In this way, concrete is prevented from sticking to the molding face and hence, the cleaning work becomes easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete formwork for placing cloth foundation concrete, for example.

[0002]

2. Description of the Related Art Generally, for example, when placing a cloth foundation concrete, a plurality of concrete forms are combined in the lateral direction. Each concrete formwork is provided with a molding plate, and side plates are attached to both left and right sides of the molding plate. This forming plate is formed of an iron plate.

[0003]

However, since the above-mentioned conventional forming plate is formed of an iron plate, the weight increases, and concrete easily adheres to the forming surface of the forming plate after placing the concrete. Therefore, it was necessary to apply a release agent to the molding surface before pouring concrete.

An object of the present invention is to provide a concrete formwork which can reduce the weight of a forming plate and does not require a release agent to be applied before placing concrete.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 is such that a molding plate is formed of a resin material,
Similarly, upper and lower horizontal side plates are integrally formed by bending with a resin material on both upper and lower sides thereof, and metal vertical side frames are attached to the left and right side portions of the molding plate.

In order to achieve the above-mentioned object, the invention according to claim 2 further comprises horizontal reinforcing ribs integrally formed on the outer edges of the upper and lower horizontal side plates in the first aspect so as to be bent toward each other. Is taken.

In order to achieve the above-mentioned object, the invention according to claim 3 is the same as in claim 1 or 2, in which the vertical side frame is
A means for attaching a connecting rod for connecting the concrete formworks to each other so as to be able to reciprocate, and attaching a U-shaped metal fitting for sandwiching and fixing both vertical side frames of the formwork joined to each other to the connecting rods, I am taking it.

Further, in order to achieve the above-mentioned object, the invention according to claim 4 is characterized in that in any one of claims 1 to 3,
The forming plate is composed of an inner forming plate made of aluminum and an outer forming plate made of a resin material adhered to the surface of the forming plate.

[0009]

According to the invention of claim 1, since the molded plate is made of resin, the weight is reduced and the molded plate is easily separated from the concrete after the concrete is poured. The work of applying to the molding surface is unnecessary.

According to the second aspect of the present invention, since the horizontal reinforcing ribs are further integrally formed on the outer edges of the upper and lower horizontal side plates, the strength of the molded plate is improved. Further, in the invention described in claim 3, in addition to the operation of the invention described in claim 1 or 2, the connecting work between the concrete formwork can be easily performed by the connecting rod and the U-shaped metal fitting attached to the vertical side frame.

Further, in the invention according to claim 4, since the molding plate is composed of an inner molding plate made of aluminum and an outer molding plate made of a resin material adhered to the surface of the molding plate, the weight of the mold can be reduced. You can Further, since the outer molding plate is a resin material, it is not necessary to apply a release agent to the molding surface before placing concrete.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment embodying the present invention will be described below with reference to FIG. The molding plate 1 is made of a resin material having a high corrosion resistance to concrete, and upper and lower horizontal side plates 1a and 1b are integrally bent and formed at both upper and lower edges thereof. Vertical side frames 2 and 3 made of iron square pipes or iron plates on the left and right sides of the back surface of the forming plate 1.
Is attached. Although not shown, the molding plate 1 and the side frames 2 and 3 are fixed by engaging a screw or an engaging concave portion with an engaging convex portion. Both vertical side frames 2 and 3 are formed by bending a single iron plate or are formed by drawing flattened rectangular pipes.

Through holes 2a and 3a are formed at a plurality of positions in the vertical direction on both the vertical side frames 2 and 3, respectively. This hole 2
A connecting rod (not shown) is penetrated through a and 3a in a state where the molds are joined to each other, and both vertical side frames 2 and 3 joined to each other by a U-shaped metal fitting (not shown) attached to the connecting rod. It is pinched and fixed.

In the concrete formwork constructed as described above, since the forming plate 1 is made of the resin material, the weight can be reduced. Further, since concrete is easily peeled off from the molding plate 1, it is possible to prevent concrete from adhering to the molding surface of the molding plate 1 without applying a release agent to the molding surface of the molding plate 1 in advance, and to clean the molding surface. It can be done easily.

Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, the above-mentioned first
In the embodiment, horizontal reinforcing ribs 1c and 1d are formed in the vertical direction on the outer edges of the upper and lower horizontal side plates 1a and 1b so as to be integrated and close to each other. Therefore, the strength of the molded plate 1 is improved.

Next, a third embodiment of the present invention will be described with reference to FIGS. Vertical side frames 2 and 3 made of iron square pipes or iron plates are attached to the left and right sides of the back surface of the molded plate 1 made of the resin of this embodiment.
The side frames 2 and 3 are formed by bending a single iron plate, and mounting plates 4 and 5 that are joined and fixed to the back surface of the molding plate 1 are formed by bending at one corner. Through holes 4a and 5a are formed in the upper, middle and lower parts of both mounting plates 4 and 5, respectively.
A plurality of locking pins 1e integrally formed on the back surface of the through hole 4
After engaging with a and 5a, the tip of locking pin 1e is heated and melted to form a head as shown in FIG. 5, or a screw is used to fix forming plate 1 and side frames 2 and 3 to each other. It is fixed.

Further, in order to connect the concrete molds to each other, the fittings 6 are fixed to the back surface of the molding plate 1, and the through holes 6a penetrating the fittings 6 and the side frames 2, The connecting rod 7 is penetratingly supported in the through holes 2a and 3a provided through the shaft 3 so that the connecting rod 7 can reciprocate in the left-right direction. Further, a U-shaped metal fitting 8 for sandwiching the vertical side frames 2 and 3 of both molds to be joined to each other is attached in the middle of the connecting rod 7.

In the concrete formwork constructed as described above, since the molding plate 1 is made of the resin material, the weight can be reduced. Further, since concrete is easily peeled off from the molding plate 1, it is possible to prevent concrete from adhering to the molding surface of the molding plate 1 without applying a release agent to the molding surface of the molding plate 1 in advance, and to clean the molding surface. It can be done easily. Further, in this embodiment, since the connecting rod 7 and the U-shaped metal fitting 8 are mounted by the vertical side frame 2 and the mounting metal fitting 6, the connecting work between the molds is easy as compared with the mold having no U-shaped metal fitting. You can do it.

Next, a fourth embodiment of the present invention will be described with reference to FIG. In this embodiment, the molding plate 1 is composed of an inner molding plate 11 made of aluminum and an outer molding plate 12 made of resin adhered to the surface thereof. The outer molding plate 12 may be a sheet or an extruded plate. Other configurations are similar to those of the third embodiment described above.

In the fourth embodiment, since the molding plate 1 is composed of the lightweight inner molding plate 11 made of aluminum and the light molding outer molding plate 12 which is also lightweight, the weight can be reduced. Further, since the molding surface of the molding plate 1 is made of resin, it is possible to suppress the adhesion of concrete and to easily perform the cleaning work.

Next, a fifth embodiment of the present invention will be described with reference to FIG. In this embodiment, horizontal reinforcing ribs 1c and 1 are provided on the outer edges of the upper and lower horizontal side plates 1a and 1b of the forming plate 1.
d is integrally formed by bending. The assembling of the side frames 2 and 3 is performed from the left and right sides of the molding plate 1. Other configurations are similar to those of the third embodiment described above.

In this fifth embodiment, both horizontal reinforcing ribs 1c,
Since there is 1d, the strength of the molding plate 1 can be increased. The present invention is not limited to the above embodiment, but can be embodied as follows.

(1) As shown in FIG. 8, a reinforcing plate 1f may be integrally formed on the back surface of the molding plate 1 in the vertical direction, or a reinforcing plate 1g may be integrally formed in the lateral direction as shown in FIG. , And as shown in FIG. 10, longitudinal and lateral reinforcing plates 1f,
Forming 1g integrally. This reinforcing plate 1f, 1
Incorporating the construction of g into another embodiment.

(2) As shown in FIG. 11, the mounting plates 13 and 14 are bent and formed at both upper and lower ends of the vertical side frame 2 made of a square pipe, and the mounting plates 13 and 14 and the horizontal side plates 1a and 1b are screwed. Tighten and fix with 15 or tacks (not shown).

(3) As shown in FIG. 12, the molding plate 1 is made of a honeycomb resin plate having a space inside. (4) To draw or extrude the molding plate 1 and the inner molding plate 11.

(5) In the above-mentioned embodiment, the vertical side frames 2 and 3 are formed by the square pipe or the plate material, but instead of this, the angle material or the like is used. (6) As a connecting structure of the molding plate 1 and the vertical side frame, screw holes or drill holes for screwing the screws are formed in the upper and lower end surfaces of the side frames 2 and 3, and the screws are inserted from the horizontal side plates 1a and 1b side. To be screwed into the hole.

(7) To embody the constitution of the molding plate 1 of FIG. 6 in another embodiment.

[0028]

As described in detail above, the invention according to claim 1 can reduce the weight of the concrete formwork, and can eliminate the need to pre-apply the release agent before placing concrete. There is an effect that can be done.

In addition to the effect of the invention of claim 1, the invention of claim 2 has the effect of improving the strength of the molded plate. Further, in addition to the effects of the invention described in claim 1 or 2, the invention described in claim 3 can easily perform the connecting work between the concrete formwork.

Further, the invention according to claim 4 has an effect that the weight of the concrete form can be reduced and the work of applying the release agent in advance before placing the concrete can be eliminated.

[Brief description of drawings]

FIG. 1 is a first concrete formwork embodying the present invention.
It is a perspective view showing an example.

FIG. 2 is a perspective view of a concrete formwork of a second embodiment.

FIG. 3 is a perspective view of a concrete formwork showing a third embodiment.

FIG. 4 is an exploded perspective view of a concrete formwork of a third embodiment.

FIG. 5 is a vertical sectional view of a concrete formwork of a third embodiment.

FIG. 6 is a perspective view of a concrete formwork showing a fourth embodiment.

FIG. 7 is a perspective view of a concrete formwork showing a fifth embodiment.

FIG. 8 is a perspective view showing another example of the present invention.

FIG. 9 is a perspective view showing another example of the present invention.

FIG. 10 is a perspective view showing another example of the present invention.

FIG. 11 is a partial front view showing another example of the present invention.

FIG. 12 is a partial perspective view showing another example of the present invention.

[Explanation of symbols]

1 ... Molded plate, 1a (1b) ... Upper (lower) horizontal side plate, 1
c, 1d ... Horizontal reinforcing ribs, 2 (3) ... Vertical side frames, 4
(5) ... Mounting plate, 6 ... Mounting bracket, 7 ... Connecting rod, 8 ... U-shaped bracket, 11 ... Inner molding plate, 12 ... Outer molding plate.

Claims (4)

[Claims] 1. A molding plate is formed of a resin material, and upper and lower horizontal side plates are integrally bent and formed on the upper and lower side portions of the resin material, and metal vertical side frames are attached to the left and right side portions of the molding plate. Concrete formwork characterized by that. 2. The concrete formwork according to claim 1, wherein horizontal reinforcing ribs are integrally formed on the outer edges of the upper and lower horizontal side plates so as to be closer to each other. 3. The mold according to claim 1, wherein a connecting rod for connecting the concrete formwork to each other is reciprocally mounted on the vertical side frame, and the formwork is joined to the connecting rod. A concrete formwork having U-shaped metal fittings for sandwiching and fixing both vertical side frames. 4. The method according to claim 1, wherein
A concrete formwork characterized in that the molding plate is composed of an inner molding plate made of aluminum and an outer molding plate made of a resin material adhered to the surface thereof.