JPS5826098Y2 - Formwork for concrete blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork for concrete blocks, and more particularly to a formwork for concrete blocks suitable for simplifying mold setting and demolding.

Conventionally, a cylindrical form body is placed on a base with unevenness that forms a mirror surface of the block, fresh concrete is poured from the upper opening of the form body, and concrete pronk is formed by curing and removing the mold. The formwork for concrete blocks obtained is generally known.

However, with this type of formwork, the formwork body is simply placed on the base and is not connected and fixed, so there is a risk of the formwork body falling over when filling with fresh concrete, and when demolding. Since the form body had to be lifted from the base by appropriate means, demolding was not easy.

The present invention was devised to solve these conventional problems, and its purpose is to provide a formwork for concrete blocks that is extremely easy to set up and demold.

The present invention consists of a base that forms a press mirror surface, a cylindrical form body that is placed on the base and forms the block mating end and the block body, and a block body that is perforated in the form body. A hole corresponding to the notch provided on the side, a lid body whose lower end is pivoted to the formwork body and which closes this hole from the outside, and a lid body that protrudes outward from the pivot joint of the lid body and is used to open and close the lid body. A swinging member that swings along with the swinging member, a hook provided on the base, and a direction in which the locking part at the lower end is locked to the hook by a spring, which is pivoted at the peripheral surface position of the block mating end on the outer surface of the form body. and a catch fitting biased by the swinging member, by swinging the catch fitting against the urging force of the spring, the formwork and the base can be separated, and the hook or the catch fitting can be separated. is positioned within the swing locus of the locking part, and as the catch metal swings, the locking part and the hook come into contact, pushing the hook downward and lifting the formwork body from the base. It is characterized in that it is made to rise up, thereby simplifying mold assembly and demolding.

The present invention will be explained below based on an embodiment shown in FIGS. 1 to 3.

In FIG. 1, reference numeral 1 denotes a base consisting of an upper pressed mirror plate 1a and a lower bottom frame 1b, and legs 2 are provided on the lower surface of the base 1 as shown in FIG. A cylindrical form body 3 is placed on the table 1.

A hole 4 that curves toward the axis as shown in FIGS. 1 and 2 is provided in a portion of the form body 3 corresponding to the notch to be provided in the bronc body. Hole 4
It is closed by a lid body 5 that is curved to follow the shape of.

As shown in FIGS. 1 and 2, the lower end of the lid 5 is fixed to a rotating shaft 1 rotatably attached to the form body 3 via a support piece 6, and the lid 5 It can be opened and closed using the shaft 7 as a fulcrum.

The upper end of the lid 5 is locked to the mold body 3 by a stopper 8 provided on the mold body 3 at a position above the lid 5.

As shown in FIGS. 1 and 2, the stopper 8 includes a fixing member 9 fixed to the side surface of the form body 3, and this fixing member 9.
and a U-shaped movable member 11 whose both ends are attached via a bottle 10 so as to be able to swing up and down.
1 is provided with a protruding locking piece 12 whose lower end is bent outward and locks the upper end of the lid 5.

The lid 5 is attached to the rotating shaft by swinging the movable member 11 upward with the bottle 10 as a fulcrum and disengaging the locking piece 12 from the lid 5, as shown by the chain line in FIG. It is designed to open outward with 7 as the fulcrum.

As shown in FIGS. 1 to 3, a swinging member 13 formed by bending a round bar into a U-shape is protruding from the lower end of the lid 5 configured as described above. This swinging member 13 rotates around the rotating shaft 7 as a fulcrum as the lid body 5 opens and closes.
It is designed to swing from the solid line position to the chain line position in the figure.

As shown in FIGS. 1 to 3, a U-shaped support member 14 is provided in a protruding manner at a portion of the form body 3 that corresponds to the curved end of the block. As shown in the figure, a plate-shaped catch fitting 16 is pivotably mounted via a shaft 15.

As shown in FIG. 3, the outer surface of the upper end of the catch fitting 16 is canted diagonally to form a slope 16a, and this slope 16a is constantly in contact with the swinging member 13, so that the swinging member 13 and the catch fitting 16 are connected to each other. It is designed to be linked.

Further, the lower inner surface of the catch fitting 16 is provided with a U-shaped notch-shaped locking part 17 that opens toward the form body 3, as shown in FIG. A U-shaped hook 18 fixed to the stand 1 is adapted to be locked.

Furthermore, the lowermost end of the inner surface of the catch fitting 16 is canted diagonally to form a guide surface 16b, as shown in FIG.
As will be described in detail later, the hook 18 is adapted to guide the locking of the hook 18 to the locking portion 17.

As shown in FIGS. 1 and 3, the catch fitting 16 configured in this manner is constantly biased in the direction of locking the locking portion 17 to the hook 18 by a coil spring 19 wound around the shaft 15. , normally maintains the state shown by the solid line in FIG. 3, and swings the swinging member 13 to the chain line position to swing against the biasing force of the coil spring 19;
The engagement between the locking portion 17 and the hook 18 is released.

At this time, the catch fitting 16 is in the state shown by the chain line in FIG.
The mold body 3 is made to float from the base 1 by coming into contact with and pressing it downward.

In FIGS. 1 and 2, reference numeral 20 indicates a handle for gripping the formwork/main body 3, and reference numeral 21 indicates a rift C for reinforcing this handle.

Next, the effect will be explained.

When manufacturing a concrete block, first the form body 3 is placed on the base 1.

At this time, the catch fitting 16 is in the state shown by the solid line in FIG. The lower part of the coil spring 19 is swung outward against the biasing force of the coil spring 19.

Then, at the same time as the form body 3 contacts the base 1, the locking portion 1
7 is locked to the hook 18.

Note that the lid 5 is closed in advance before the form body 3 is placed on the base 1, and fixed with a stopper 8 as shown in FIG.

Then, fresh concrete (
(not shown) is added while vibrating.

As a result, the fresh concrete is densely filled into the form body 3.

After curing, the movable member 11 of the stopper 8 is swung upward about the pin 10 as a fulcrum, as shown by the chain line in FIG. 2, and the lid 5 is opened outward.

Then, as shown in FIG. 3, the swinging member 13 swings about the rotating shaft 7 from the solid line position to the chain line position.

When the swinging member 13 swings, the catch fitting 16 swings against the urging force of the coil spring 19 from the solid line position shown in FIG. 3 to the chain line position in conjunction with this movement.

Then, the locking part 17 and the hook 18 are disengaged, and the form body 3 and the base 1 can be separated, and the locking part 1
The upper end corner portion 17a of the hook 7 contacts the hook 18 and presses it downward.

As a result, the form body 3 rises from the base 1, and the formed concrete flock (not shown) is removed from the form body 3 by its own weight.

Thereafter, the mold body 3 is pulled up by gripping the handle 20.

As a result, the concrete block is completely demolded leaving the concrete block on the base 1.

As explained above, this embodiment provides the following effects.

(1) Since the mold assembly is completed by simply placing the mold body on the base with the lid closed, the mold assembly work is extremely simple and the connection is strong.

(2) Two lids can be locked and unlocked at the same time with a single metal fitting, and the metal fitting only needs to swing the movable member up and down, making the work easy and locking the lids. is certain.

(3) After curing, demolding is completed by simply opening the lid and pulling the mold body upward, making demolding work extremely easy.

In addition, at the same time as the lid is opened and closed, the formwork body lifts up from the base.
At this time, the concrete block has already fallen onto the base due to its own weight, so there is no fear that the concrete flock will be pulled up together with the formwork when the formwork body is pulled up.

(4) Since the catch fitting automatically returns to its original position using the coil spring when the lid is closed, there is no need to work on the lower part of the form body, and the work can be done while standing.

4 and 5 show another embodiment of the present invention, in which the catch fitting 16 and the hook 1 in the embodiment described above are shown.
8, a catch fitting 26 formed by bending a round bar into a U-shape and a plate-shaped hook 28 are used.

The hook 28 has a catch fitting 26 as shown in FIG.
A guide 28a is formed by diagonally canting the upper end facing the guide surface 28a, and a U-shaped notch 29 in which the locking part 21 at the tip of the catch fitting 26 is locked is provided at the lower part of the guide surface 28a. I'm getting lost.

The lower end corner 29a of this notch 29 comes into contact with the locking part 27 when the catch fitting 26 is swung as shown by the chain line in FIG. It is designed to float above the base 1.

The present embodiment described above can also be expected to have the same effects as the embodiments described above.

In both of the above embodiments, a rectangular block has been described, but it goes without saying that the present invention can also be applied to a square block, and the body of the block may be circular instead of square.

Furthermore, many modifications and changes can be made without changing the gist of the present invention, such as protruding the coil spring 19 from the outer surface of the form body 3 instead of winding it around the shaft 15.

The present invention has been described above based on the preferred embodiments, and according to the present invention, mold assembly and mold removal operations are extremely simple.

In particular, the formwork body lifts up from the base at the same time as the lid is opened, and at this time, the concrete flock has already fallen onto the base due to its own weight and the peeling force accompanying the lifting, so the formwork body There is no risk of the concrete flock being pulled up together with the concrete flock.

[Brief explanation of the drawing]

Fig. 1 is a partially cut away front view showing one embodiment of the present invention;
The figure is a side view of Figure 1, Figure 3 is an enlarged sectional view of the main part of Figure 1, Figure 4 is a sectional view showing another embodiment of the present invention, and Figure 5 is a side view of Figure 4. be. 1...Base, 1a...Press mirror plate,
1b...Bottom frame, 3...Form body, 4
...hole, 5...lid body, 7...
Rotating shaft, 13... Swinging member, 14...
Support member, 15... shaft, 16, 26...
・Catch fitting, ISa, 28a... Guide surface, 17.27... Locking part, 17a...
Upper corner, 18, 28...Fusori. 19... Coil string, 29... Notch, 29a... Lower end corner.

Claims (1)

[Claims for Utility Model Registration] 1) A base that forms a press mirror surface, a cylindrical form body that is placed on this base and forms a block mating end and a block body, and a form body that A hole corresponding to the notch formed on the side surface of the block body, a lid body that closes this hole from the outside and whose lower end is pivoted to the formwork body, and a hole extending outward from the pivot point of the lid body. A swinging member that swings as the protruding lid is opened and closed, a hook provided on the base, and a locking part at the lower end that is pivotally mounted on the outer surface of the formwork body at a position on the circumferential surface of the joint end of the block. The formwork body and the base can be separated by comprising a catch metal member biased in a direction to engage the hook, and by swinging the catch metal member against the biasing force of the spring by the swinging member. At the same time, position it within the swinging trajectory of the locking part of the hook or catch fitting,
A formwork for a concrete block, characterized in that the hook is pressed downward by contact between the locking part and the hook as the catch metal swings, and the formwork body is lifted from the base. 2) Position the hook or the locking part of the catch fitting within the swing trajectory, and press the hook downward by the contact between the locking part and the hook as the catch fitting swings, and the formwork A concrete block formwork according to claim 1, wherein the main body is made to float above the base.