JPH0890538A - Form for mold - Google Patents

Abstract

PURPOSE: To improve the degree of adhesion of the connecting part of a bottom plate to a side plate by expanding a packing member by moving the air in an air supply member into the packing member at the time of assembling the side plate with the bottom plate. CONSTITUTION: An air tank 15 is mounted at a tank mounting plate 17 protruding from the open end side of a second side plate 5. When the open end side of the plate 5 is blocked and fixed to form a form, the tank 15 is shrunk. In this case, the air in the tank 15 is fed to a rubber packing 13 via a hose to expand the packing 13. The connecting part of the plate 2 is brought into close contact with the plate 5 by the expansion of the packing 13. As to the other plate 6, the packing 13 may be similarly provided at the connecting part of the plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding frame device for molding concrete products such as concrete blocks for U-shaped grooves.

[0002]

2. Description of the Related Art As a formwork device for molding concrete products or the like, a method of bending a metal plate in a box shape and charging concrete with reinforcing bars or alone into the formwork and hardening it has been conventionally known. Has been. When forming a concrete block with this kind of metal formwork device,
It is necessary that the mold itself can be easily assembled and fixed to a predetermined molding size during molding, and the molded concrete block can be easily removed from the mold after molding.

Therefore, the formwork device is usually formed as a separate body so that the bottom plate and the side plate forming the formwork can be assembled and disassembled.

[0004]

However, when the mold is made to be assembled and disassembled into the bottom plate and the side plate, a gap is generated at the joining portion between the bottom plate and the side plate due to warping or bending of the plate material. For this reason, concrete leaks in this gap portion, and as shown in FIG. 7, excess concrete material is condensed or broken 101 in the portion of the concrete block 100 to be a finished product, which causes a defective product. Has become.

Therefore, although a packing member is attached to the joint portion of the bottom plate and the side plate to prevent concrete from leaking, a normal packing member formed by interposing a simple rubber material is sufficient for the concrete. It was the current situation that we could not deal with the leak of. That is, in a packing member made of a rod-shaped rubber material or the like, there is a problem in that deformation such as warp of the bottom plate or the side plate at the joint portion of the bottom plate and the side plate is absorbed and pressure-bonded, and the adhesion cannot be ensured evenly. It was

[0006]

Therefore, a molding frame device according to the present invention has been proposed in order to achieve the above-mentioned object, and includes a bottom plate formed in a plate shape and the bottom plate of the bottom plate. A form frame molded in a box shape with side plates attached to four sides, a hinge member for releasably attaching at least one side of the side plate to the bottom plate, and a joint portion between the bottom plate and the releasable side plate. An inflatable hollow packing member mounted over the packing member, and a contractable and expandable air supply member for supplying air for expanding the packing member into the packing member, the air supply member closing the side plate on the open end side. Along with this, the air in the air supply portion is supplied into the packing member, and the packing member is expanded to bring the joint portion of the bottom plate and the side plate into close contact with each other.

Further, an inflatable packing member may be provided at a joint portion between the side plate and another side plate.

[0008]

In the present invention, the packing member attached to the joint between the bottom plate and the side plate is connected to the air supply member, and when the side plate is assembled to the bottom plate, the open end side of the side plate is closed. Then, the air in the air supply member is moved into the packing member and the packing member is expanded to improve the adhesion of the joint between the bottom plate and the side plate and prevent concrete leakage at this joint. be able to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In this embodiment, a molding frame device for molding a concrete block for a U-shaped groove will be described.

First, the molding frame device 1 according to the present embodiment is
As shown in FIG. 1, it has a bottom plate 2 formed of a metal material such as an iron plate in a plate shape, and a pair of first side plates 3 and 4 and second side plates 5 and 6.

A trapezoidal projection 7 is formed on the bottom plate 2 in accordance with the shape of the U-shaped groove block to be molded. A partition plate 8 is provided at the center of the bottom plate 2 in the longitudinal direction so as to project from the projecting portion 7 so that two U-shaped groove blocks can be molded at one time.

The first side plates 3 and 4 are attached to the front side and the rear side of the four sides of the bottom plate 2. That is, the first
The side plates 3 and 4 are formed in a plate shape having a size sufficient to cover the front surface or the rear surface of the formwork apparatus 1. Then, the first side plates 3 and 4 are inserted through the guide members 9 and 9 projecting from both ends of the protrusion 7 provided on the bottom plate 2, and are clamped and fixed by the stopper members 19 from the outside. . Thereby, the first side plates 3 and 4 are attached to the bottom plate 2 to form a front plate and a rear plate of the frame body.

Next, the second side plates 5 and 6 are attached to both sides of the bottom plate 2 via hinge members 10, and the upper end side can be opened and closed. The second side plates 5 and 6 are formed in a plate shape having a size large enough to cover both sides of the formwork device 1, and a protrusion for inclining both side surfaces of the concrete block to be formed on the upper end side. Inclined portions 5a and 6a are provided.

Therefore, the bottom plate 2, the first side plates 3 and 4 attached to the front and rear surfaces of the bottom plate 2, and the second side plates 5 and 6 attached to both side faces form a box-shaped form. .

Then, for example, as shown in FIG.
The side edge portion 11 of the bottom plate 2 facing the side plate 5 is provided with a mounting recess 12 to which a rubber packing described later is mounted. Then, the rubber packing 1 is placed in the mounting recess 12.
3 is stored and attached.

As shown in FIG. 5, the rubber packing 13 has a length corresponding to the side edge of the bottom plate 2 and has a hollow portion 13a. The entire rubber packing 13 is expandable by the air flowing into the hollow portion 13a. The hose 14 extending from one end of the rubber packing 13 is connected to the air tank 15. Therefore, the rubber packing 13 allows air to flow in and out of the air tank 15 through the hose 14.

The means for attaching the rubber packing 13 to the side edge portion 11 of the bottom plate 2 is not limited to the above, but improves the adhesion of the joint portion between the bottom plate 2 and the second side plate 5. Anything can be arranged so that it can be obtained. That is, as shown in FIG. 6, a packing receiver 20 for arranging the rubber packing 13 may be provided below the side edge portion of the bottom plate 2, and the rubber packing 13 may be arranged in the packing receiver 20.

The hose 14 is inserted, for example, through a through hole provided at a position corresponding to the end of the rubber packing 13 of the first side plate 3, and is guided above the first side plate 3. Then, the first side plate 3 is inserted into a through hole of a tank pressing plate 16 provided so as to project from one side edge of the first side plate 3 and connected to the air tank 15.

As shown in FIGS. 3 and 4, the air tank 15 is of a bellows type and is capable of contracting and expanding. Therefore, by contracting the air tank 15, the air in the air tank 15 can be sent into the rubber packing 13 via the hose 14, and conversely, by expanding the air, the air in the rubber packing 13 can be sucked.

The air tank 15 is attached to, for example, a tank mounting plate 17 formed so as to project from the side of the open end of the second side plate 5. This tank mounting plate 17 is
The tank pressing plate 16 provided on the side plate 3 of the
When the side plate 5 is closed on the open end side, the air tank 15 is pressed by the tank pressing plate 16. Therefore, when the open end side of the second side plate 5 is closed and fixed and a mold is formed as shown in FIGS. 2 and 4, the air tank 15 is contracted.

At this time, the air in the air tank 15 is sent into the rubber packing 13 via the hose 14, and the rubber packing 13 is expanded. This rubber packing 13
Due to the expansion, the joint portion between the bottom plate 2 and the second side plate 5 is brought into close contact with each other. It should be noted that the rubber packing 13 may be similarly provided on the other side plate 6 at the joint portion with the bottom plate 2.

In this state, the concrete material is poured into the formwork apparatus 1 from above. At this time, for example, in the joint portion between the bottom plate 2 and the second side plate 5, since the expandable rubber packing 13 ensures the close contact,
No concrete leaks. Then, if the concrete material is cured and hardened for a certain period of time, the concrete block is molded.

Therefore, according to the formwork device 1 in which the inflatable rubber packing 13 is arranged at the joint portion between the bottom plate 2 and the second side plate 5 as described above, the concrete material or the like is placed in the formwork device 1. In the case of filling and hardening, the concrete can be prevented from leaking at the joint portion between the bottom plate 2 and the second side plate 5, and the end portion of the concrete block to be molded can be surely molded.

After the concrete material is hardened, the second side plates 5 and 6 are unfixed, and the open end sides of the second side plates 5 and 6 are opened. At this time, the bottom plate 2 and the second
The rubber packing 13 arranged at the joint with the side plate 5 of
The rubber packing 1 is expanded by expanding the air tank 15.
Since the air in 3 is sucked to the air tank 15 side and contracts, the bottom plate 2 and the second side plate 5 can be easily removed.

Further, the stopper member 19 for fixing the first side plates 3 and 4 is loosened and removed from the guide member 9, and the first side plates 3 and 4 are removed from the bottom plate 2. As a result, the concrete block that has been easily molded can be taken out of the main molding frame device 1.

In this embodiment, the case where the inflatable rubber packing 13 is used for the joint portion between the bottom plate 2 and the second side plate 5 has been described.
It goes without saying that rubber packings may be provided at the joints with the side plates 3 and 4, respectively. In this way, it is possible to provide a finished product that does not leak concrete on the four sides of the concrete block to be molded.

Further, a rubber packing may be arranged at a joint portion between the first side plate and the second side plate. With this configuration, it is possible to improve the adhesion of the joint portion between the first side plate and the second side plate.

In this embodiment, the rubber packing and the air tank are filled with air, and the rubber packing is inflated by the air pressure generated by the movement of the rubber packing. However, the present invention is not limited to this example. It is also possible to fill water or oil in the inside of the above and expand the rubber packing by water pressure or hydraulic pressure.

[0029]

According to the present invention, the packing member attached to the joint between the bottom plate and the side plate is connected to the air supply unit, and the air in the air supply unit moves into the packing member when the side plate is assembled to the bottom plate. Thus, by expanding the packing member, it is possible to improve the adhesion of the joint portion between the bottom plate and the side plate, and to provide a molding frame device capable of preventing concrete leakage at this joint portion.

In particular, according to the expandable rubber packing,
It is possible to absorb the deformation such as the warp of the bottom plate and the side plate at the joint portion of the bottom plate and the side plate and press the same to make the adhesion even and reliable.

Therefore, the concrete block molded by using the molding frame device according to the present invention can be a surely completed product in which excess concrete is not condensed or damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing an opened state of a second side plate of a molding frame device according to the present invention.

FIG. 2 is a perspective view showing a second side plate closed state of the molding frame device according to the present invention.

FIG. 3 is a cross-sectional view of essential parts showing a second side plate open state of the molding form device.

FIG. 4 is a cross-sectional view of essential parts showing a second side plate closed state of the molding form device.

FIG. 5 is a side view and a front view showing the shape of a rubber packing.

FIG. 6 is a cross-sectional view of an essential part showing another attachment means of the rubber packing to the molding die device.

FIG. 7 is a perspective view showing a concrete block formed by a conventional molding form device.

[Explanation of symbols]

 2 Bottom plate 3,4 First side plate 5,6 Second side plate 10 Hinge member 13 Rubber packing 15 Air tank

Claims (2)

[Claims] 1. A form frame formed in a box shape by a plate-shaped bottom plate and side plates attached to four sides of the bottom plate, and at least one side of the side plate for releasably attaching to the bottom plate. A hinge member, an inflatable hollow packing member mounted over the joint between the bottom plate and the releasable side plate, and a contractible inflatable air supply for supplying air for expanding the packing member The air supply member is contracted when the side plate is closed at the open end side to supply the air in the air supply unit into the packing member, and the packing member is expanded to join the bottom plate and the side plate. Forming device for molding which is made to adhere. 2. The molding frame device according to claim 1, wherein an expandable hollow packing member is provided at a joint portion between the side plate and another side plate.