JPS6030023Y2 - Formwork for freestanding blocks - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a formwork for a self-supporting block for forming a bottom mold of a self-supporting block in which a retaining end protrudes from the retaining portion to the outer periphery and a protrusion preventing protrusion is provided.

A self-supporting block is a block in which, as shown in Figure 6, the retaining part C that connects the front a and the buttress is narrower and narrower than the front a and the buttress, and is constructed without using chestnut stone during construction. A block that can be stacked and stands on its own without tipping over when loaded.

Therefore, since the construction work is extremely simple, they have come to be widely used in place of conventional trapezoidal blocks.

However, since this self-supporting block has the constricted shape of the retaining portion C as described above, it is difficult to remove the mold after molding it in a formwork, and today there is a field in the field of formworks for this type of self-supporting blocks. Currently, technological development is being carried out with a focus on how easily demolding can be performed, but nothing satisfactory has yet been developed.

In addition, in this type of self-supporting block, a triangular protrusion prevention protrusion d is provided protruding near the root of the retaining portion C.
This is designed to prevent the stacked self-supporting blocks from flying forward, that is, in the front direction, due to back pressure.

However, since such protrusion prevention protrusions d must be molded, demolding becomes increasingly difficult.

Conventional formwork was extremely complex.

Therefore, this idea was created by forming one side into a gently curved surface, and forming the other three into an inwardly constricted shape.A four-sided cylinder that passes through the top and bottom is arranged in a rectangular frame fixed at a 1-shape angle. In the formwork, one surface formed on the curved surface is fixed to the frame body to make it a fixed type, and the other three sides are rotatably arranged on the frame body to make it a movable type. A rotatable engagement bar bent in a U-shape is arranged above the outer surface,
This engagement bar allows the movable mold located on both sides of the fixed mold to be freely engaged and detached from the movable mold located on both sides of the fixed mold. A rotatable engagement bar bent into a shape is arranged so that the engagement bar can freely engage and disengage the movable mold located on both sides of the fixed mold, and the movable mold located opposite to the fixed mold. Forming an outward diagonal protrusion in a part of the lower end, and cutting off a position of the frame corresponding to the protrusion to the same extent as the width of the protrusion;
And an abbreviated movable piece is connected to the cut out part so as to be interlocked with the movable mold, and the movable mold is erected by the two engagement bars and assembled into a rectangular cylinder shape, and in this state. Concrete is poured into this interior, and when the movable mold is released from its upright position by the engagement bar and opened in three directions, the movable piece connected to the movable mold is simultaneously opened and removed. It was developed with the aim of providing a formwork for freestanding blocks that can be molded.

Next, an embodiment of the formwork for a self-supporting block according to this invention will be described based on the drawings. 1 is a fixed type formed into a gently curved surface, and 2, 3° 4 is a formwork with an inwardly constricted shape. It is a movable type formed.

These fixed mold 1 and movable mold 2, 3, and 4 are formed into a rectangular cylindrical body by these four parts.

That is, 5 is a rectangular frame body, the fixed mold 1 is fixed to one side of this frame body 5, and the movable mold 2°3.4 is
They are each rotatably connected to the other three sides of the frame body 5 by hinges 6, 7, 8.

Reference numeral 9 denotes a single-shaped angle whose lower end is fixed to the frame 5, bent upward into an L-shape, and whose upper end is fixed to the fixed mold 1.

Reference numeral 10 denotes two locking pieces fixed to the upper position of the outer surface of the fixed mold 1. A hole is bored in the locking piece 10, and the bundle 11 is protruded through the hole. The engagement bar 12 bent into an L-shape is passed through the engagement bar 12.

The engagement bar 12 is rotatably arranged, and the L-shaped bent portions at both ends can engage with the ends of the movable molds 2 and 4 located on both sides of the fixed mold 1. in position.

Reference numeral 13 denotes an engagement bar bent in a U-shape and arranged to face the movable die 3 which is present on the opposite side of the fixed die 1, and both ends of this engagement bar 13 are bored into the above-mentioned C-shaped angle 9. It penetrates through the hole and bends its protruding end into an L-shape, and a bundle 14 is fixed to the center.

Reference numeral 15 in the drawing indicates a regulating plate fixed inside each of the movable molds 2 and 4 and at a position in contact with the fixed mold 1 and the other movable mold 3. This regulating plate 15 allows each movable mold 2 and 3
In addition to positioning during assembly of ゜4, fixed mold 1
and movable type 2. 3. This is to prevent concrete from leaking from the joints in No. 4.

Reference numeral 16 denotes a protrusion formed at a part of the lower end of the movable mold 3, and this protrusion 16 is formed obliquely outward.

17 is a movable piece formed in an abbreviated shape; - This movable piece 17 is formed to have a width comparable to that of the protrusion 16, and only the portion where this movable piece 17 is located is covered with the frame. 5 is cut out.

In other words, the window hole 18 is formed only in this portion of the frame 5.

Reference numeral 19 denotes an angle fixed to the movable piece 17, and this angle 19 is rotatably arranged with respect to a shaft 20 whose both ends are fixed to the curved angle 9.

21 is a link rod that connects the movable mold 3 and the angle 19, and the connecting position of the link rod 21 to the angle 19 is the shaft 2 in this angle 19.
0 and the fixed position of the movable piece 17.

In other words, the protrusion 16 and the movable piece 17 form the protrusion d of the self-supporting block.

Then, each movable mold 2, 3.4 is erected and each movable mold 2.3.4 is positioned using the regulating plate 15, and then the holding bar 12.13 is rotated while holding the bundle 11.14. The L-shaped bent portions on both ends of the movable mold 2
, 4 at each end.

The formwork is assembled in this way, and in this state the formwork has openings 22, 23 at its upper and lower ends; in this case, the lower openings 23 are usually If the pallet to be used is placed, the lower opening 2"3 will be closed by this pallet.

However, theoretically, the same thing can be done by assembling the formwork on a wide iron plate without using this pallet, so this pallet is not necessarily necessary.

Therefore, concrete is poured from the upper opening 22.

Then, after the concrete has hardened, the bundle 11
．． 14, rotate the engagement levers 12 and 13, untie the L-shaped bent portions at both ends from the movable molds 2 and 4, and unfold each movable mold 2, 3 and 4 in three directions. If you rotate it like this and lift the entire formwork in that state, you will be able to remove it from the mold.

In other words, in this case, if the movable mold 3 is rotated outward via the hinge 7 in order to unfold, the shaft 20 is always in the fixed position, so the movable piece 17 is moved by the link rod 21 to rotate the shaft 20. At the same time, the protruding part 16 is rotated at the same time as the movable mold 3, so in the end, the protruding part 16 and the movable piece 17 are separated, and the self-supporting block (the third (See Figure 6)
The part of the protrusion d for preventing the protrusion is also removed from the mold.

As mentioned above, the formwork for a self-supporting block according to the present invention has the effect that it is possible to easily remove the mold when molding a self-supporting block having a constricted retaining portion and protrusions to prevent popping out. .

[Brief explanation of the drawing]

The drawings show an embodiment of the formwork for a self-supporting block according to this invention, and FIG. 1 is a perspective view as seen from one direction;
Fig. 2 is a perspective view as seen from the other direction, Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 1, Fig. 4 is a cross-sectional view taken along the line B-B in Fig. 1,
FIG. 5A is a perspective view of the main part, the opening is in an open state, and FIG. 6 is a perspective view of the self-supporting block. 1... Fixed type, 2, 3. 4... Movable type, 5... Frame body, 6, 7. Death... Hinge,
9...1-shaped angle, 10...locking piece, 11, 14...handle, 12, 13...
... Locking bar, 15 ... Regulation plate, 16 ...
...Protrusion, 17...Movable piece, 18...
...Window L19...Angle, 20...
・Shaft, 21... Link rod, 22...
...Upper opening, 23...Lower opening.

Claims (1)

[Scope of utility model registration request] In a formwork arranged in a rectangular frame fixed in a figure-1 angle, a four-sided cylinder having one side formed into a gently curved surface and the other three sides formed into an inwardly constricted shape and penetrating vertically, One surface formed on the curved surface is fixed to the frame body to form a fixed type, and the other three surfaces are rotatably arranged on the frame body to make it a movable type. A rotatable retaining bar is arranged on the side of the movable mold, and the movable mold is located on both sides of the fixed mold. A rotatable retaining bar bent in a U-shape is provided on the above-mentioned angle so as to face the movable mold, and this engagement bar allows the movable mold located on both sides of the fixed mold to be freely engaged and detached. At the same time, an outward diagonal protrusion is formed on a part of the lower end of the movable mold that faces the fixed mold, and a position corresponding to the protrusion of the frame is cut to the same extent as the width of the protrusion. , and a movable piece in the shape of an abbreviation is connected to the cut portion so as to be interlocked with the movable mold.