JPS586667Y2 - Formwork for concrete blocks - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a formwork for concrete blocks, and more particularly to a formwork used for manufacturing U-shaped or V-shaped blocks for waterways.

Generally, this type of block is made by assembling a predetermined formwork that can manufacture many products of the same shape at the same time, placing reinforcing bars within the frame of the formwork, pouring concrete, and curing and hardening after a predetermined period of time. After that, it is obtained by breaking the mold.

Since these blocks for waterways are used in large quantities, it is necessary to produce blocks of the same shape in large quantities.

By the way, in conventional formwork, the formwork is disassembled into individual parts and then assembled and framed, and when cutting out the frame of a product, the assembled formwork is disassembled. There were disadvantages such as the large amount of labor and time required for the work.

This idea was proposed in view of the above-mentioned shortcomings of the conventional formwork, and the purpose is to provide a formwork that allows for easy and quick frame-cutting and frame-assembly, thereby improving block production efficiency. shall be.

In other words, the gist of this invention is to connect the front plate, bottom plate, dividing plate, and rear plate with connecting fittings, and to bring the above-mentioned plates into contact by rotating a shaft attached to the front plate. In addition, the side plates attached to predetermined positions on the bottom plate can also be opened and closed, and a gap is created between the block and the formwork when cutting the frame.

This invention will be explained in more detail below based on the attached drawings.

FIGS. 1A, B, C, and D are side, plan, front, and partial group views showing the concrete block formwork of this invention.

In the formwork of this invention, rails 9 are provided on the upper surface of both longitudinal ends of the machine base 2 and at a predetermined height at the center of the machine base, and on the rails, a front plate 1 and a rear plate are disposed in the longitudinal direction of the machine base. 10, and the bottom plate 3 and the dividing plates 5 are placed alternately between the front plate and the rear plate.

Note that the rear plate 10 is fixed to the machine base 2, and the front plate 1, the bottom plate 3, and the dividing plate 5 are supported so as to be movable in the longitudinal direction of the machine base.

A side plate 7 is attached to the outside of the lower end of the bottom plate via a hinge 72 so as to be openable and closable.

A rod R for opening and closing the side plates is continuously connected to the insertion hole of the rod insertion piece 74 on the outside of the side plate 7 so that all the side plates 7 can be opened and closed at the same time when opening and closing the side plates. .

Both ends of this rod R are inserted into notch grooves 170 provided in the front plate 1 and the rear plate 10 for regulating opening and closing of the side plates.
All you have to do is make the length of 0 longer.

A support stand 13 is erected at a predetermined position in the longitudinal direction of the machine, and a female screw conductively supports one end S2 of a shirt S having a male screw (to be described later) formed at an approximately intermediate position of this support stand. A screw box 131 is provided.

A shirt) S extends in the longitudinal direction of the machine, and as shown in FIG. Bearing 1 provided on arm 15 whose base is fixed to front plate 1
It is rotatably supported on the shaft 32.

The front plate 1, the bottom plate 3, the dividing plate 5 and the rear plate 10 are connected to each other by connecting fittings 6, as shown in FIG.

The longitudinal center portion of this connecting fitting 6 is firmly fitted into the connecting fitting fitting hole 3 of the bottom plate 3.
3 is loosely fitted.

Clamps 61 are attached to both ends of the connection/metal fitting 6 loosely fitted into the fitting hole 33 to prevent it from coming off the fitting hole.

A method of using the formwork for concrete blocks having the above configuration will be explained.

First, lift the rod R and close the side plate 7.

In this case, the positioning hole 71 provided in the side plate 7 is made to correspond to the position of the positioning pin 51 provided in the dividing plate 5.

One end S1 of the shaft S is supported on the front plate 1 via a bearing provided on the arm as described above.
If the male thread formed in is a right-handed thread, rotate it to the right.

Then, the shaft moves forward and pushes the front plate 1 toward the rear plate 10, and the bottom plate 3 and the dividing plate 5 are also pushed toward the rear plate 10 by the front plate 1.
The bottom plate and the dividing plate are tightened by the front plate and the rear plate and come into contact with each other.

At this time, the positioning pin 51 of the dividing plate is inserted into the positioning hole 71 formed in the side plate, and the position of the side plate 7 is determined.

Predetermined reinforcing bars and the like are placed within the formwork constructed in this manner, and then concrete is poured into the formwork.

Then, after curing for a predetermined period of time and solidifying, the frame is removed from the form.

When removing the frame, first, the arm side end S1 of the shaft is rotated using an electric spanner or the like in the opposite direction to the direction in which the bottom plate and the dividing plate were tightened first.

Then, the shaft is drawn out toward the front plate side by the female screw box 131, and the first bottom plate 3, which is connected to the front plate 1 by the connecting fitting 10, moves toward the front plate.

This bottom plate then pulls on the split plate, which in turn pulls on the next bottom plate.

Then, the bottom plate 3 and the dividing plate 5 are sequentially attached to the front plate 1 at intervals.
The bottom plate 3 and the dividing plate 5 are pulled apart by being pulled in the direction, and a predetermined gap is created between the concrete block solidified within the frame and the dividing plate 5.

Once a gap is created between the concrete block and the support plate 5 in this way, the side plate 7 is then opened outward.

This will create a gap between the concrete block and the side plate.

By creating such a gap, the concrete block and formwork do not come into contact with each other, so that the formwork can be easily and quickly removed by lifting the concrete block upward.

In addition, since large concrete blocks are very heavy, if the concrete block is equipped with a lifting fitting with the end buried inside the block in advance, the hook of the crane can be hooked onto the lifting fitting. If you lift it up, you can easily cut out the frame of the concrete block.

By obtaining such a formwork for concrete blocks, the work of framing and cutting can be done easily and quickly, and work efficiency can be improved.

In the above explanation, for convenience, the formwork was explained as a formwork for manufacturing a block for a U-shaped waterway, but this invention is not limited to this, and is applicable to a mold for manufacturing a block for a ■-shaped waterway. This can also be applied to frames.

When manufacturing ■-shaped blocks for waterways, the top of the support is usually placed at the bottom.

In other words, the concrete is poured into the mold while expanding downward.

Therefore, when attempting to pull the formwork upwards, the block supports and side frames come into contact with each other, making it impossible to pull the block upwards, and the formwork must be disassembled to remove the formwork.

However, according to the formwork of this invention, since the side plates are opened outward, the concrete block can be lifted upward and the formwork removed.

[Brief explanation of the drawing]

Figures 1A, B, C, and D and Figure 2 are a side view, a partial plan view, a front view, a partial exploded view, and a partial explanatory view showing the concrete block formwork of this invention, and Figure 3 is a partial explanatory view. FIG. 2 is a partial cross-sectional view showing a connected state of the formwork for concrete blocks of this invention. 1...Front plate, 2...Machine base, 3...
... Bottom plate, 5 ... Split plate, 6 ... Connection fittings, 7 ... Side plate, 9 ... Rail, 1
0... Rear plate, 13... Support stand, 15.
...Arm, 131...Female screw box, 132...Bearing, S...Shaft,
R...Rod.

Claims (1)

[Claims for Utility Model Registration] A rail 9 extends in the longitudinal direction of the top of the machine, and the rail includes a front plate 1, a rear plate 10, and bottom plates 3 and supports arranged alternately between them. A cutting plate 5 is supported so as to be movable in the longitudinal direction of the machine, and are interconnected by connecting fittings 6 of each plate, and a side plate 7 is attached to the side edge of the bottom plate so as to be openable and closable. An arm 15 fixed to the machine base extends in the longitudinal direction of the machine base and holds one end of the shaft so as to be rotatable, and the other end of the shaft is screwed into a member 131 that is in a fixed relationship with the machine base. A formwork for a concrete block, characterized in that each of the plates approaches or separates from each other by rotation of the axis of the shaft.