JPH11188714A - Form apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form apparatus wherein there exists no leakage of concrete from a through-hole made on an outer form and it is unnecessary to prepare an outer form on which a through-hole is newly made again when the position of a hole to be formed for lifting and turning is to be changed a little and changing of the hole position can be simply performed and in addition, when an approximately square concrete block is formed and a hole for lifting is provided on this top face, a concrete block with a top face lifting hole can be prepd. without making a hole on the bottom form. SOLUTION: An inner form with an approximately rectangular angle-section, a pair of plate-like outer forms 2 arranged at a specified interval from the inner form, a fixing part 4 which can be fixed on the inside at the approximately central position of the outer form and consists of a parmanent magnet and a hole forming member 3 provided with a male screw part 5 projected from the fixing part and an anchor member 2 with a lifting hole in which a female screw which can be screwed on the male screw part is engraved, are provided and the hole forming member is fixed at a specified position on the inner side of the outer form and the form is deformed after a concrete filled in the form is solidified and the fixing part can be removed from a prepd. concrete product by twisting the rotational part for rotating the male screw part provided on a bonding face side of the fixing part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork apparatus capable of manufacturing concrete products such as U-shaped grooves and concrete blocks.

[0002]

2. Description of the Related Art Conventionally, for example, a U-shaped groove having a lifting inverted hole formed at a substantially intermediate position (substantially the center of gravity of the U-shaped groove) on both side walls of the U-shaped groove.
A groove is generally known. Here, the concrete U-shaped groove is heavy and has a weight of 1 ton or more. After the concrete has been solidified, it is safe to remove the mold from the formwork. In particular, there is a particular demand for quick laying at predetermined locations.

The inventor of the present invention or his father, Shoji Takami, has made it possible to safely remove a large and heavy U-shaped groove, or to safely and quickly lay the U-shaped groove. After repeated development and experimentation, the jig for forming the lifting and reversing hole can be easily installed in the mold at the same time as setting up the mold so that a hole for lifting and reversing can be formed on the side wall of the U-shaped groove. An invention which can be easily removed using the inverted hole and has an effect of being able to lay the U-shaped groove very easily, quickly and safely using the raised inverted hole (lifted inverted) U-shaped grooves with holes and their formwork devices).

Here, the reason why the U-shaped groove must be lifted and turned upside down is as follows. First, when the U-shaped groove is removed from the mold, the U-shaped groove is in a state opposite to that at the time of use, that is, a reverse U-shaped groove. It is taken out while being laid down in the shape of a letter. Then, a generally manufactured U-shaped groove is stored in a storage place in this inverted U-shaped state. This is because, in this state, the storage stability is higher, and the storage efficiency is remarkably excellent since the storage is performed in a plurality of stages.

[0005] Therefore, when the U-shaped groove is usually transported to the laying site or temporarily laid on the laying site, the U-shaped groove is laid in an inverted U-shape and is placed in a plurality of layers. However, when actually laying the U-shaped groove, the U-shaped groove must be raised and installed, and conventionally, many workers take a long time to change the U-shaped groove from the inverted U-shaped state to the U-shaped groove. Wake up,
In addition, it takes a long time to carry it to the place where it is to be laid, and it takes a long time to fine-tune the laying (it is necessary to connect multiple U-shaped grooves 1 instead of laying only one U-shaped groove, so fine adjustment of connection is necessary And a U-shaped groove was laid.

Here, since the present inventor and his father have invented the above-described innovative U-shaped groove with a reversing lifting hole and a formwork device therefor, many concrete contractors or construction companies have taken a breakthrough. In addition to shortening the working time, the number of accidents related to laying work etc. was dramatically reduced. That is, if a member for forming a lifting reversing hole is previously installed in a mold apparatus for manufacturing a U-shaped groove, and concrete is filled and solidified in this state, the U-shaped groove with the lifting reversing hole is automatically provided. Can be manufactured,
This is because all of the holes can be used safely, quickly, and extremely inexpensively from the demolding and the laying work using the holes.

Therefore, the total number of patents obtained by the present inventors and Shoji Takami in this field has exceeded 100. Here, a conventional form device capable of forming a concrete U-shaped groove with a lifting inverted hole is provided with a through hole in the outer form in advance, and a support rod is inserted from the through hole.
A configuration in which a lifting inverted hole forming member is engaged with the support bar inside the mold and the concrete is filled in the mold from that state.

[0008]

However, in such a conventional formwork device, a through hole is formed in the outer formwork, so that when the concrete is filled, no matter how much the hole is closed. Concrete may leak from this through-hole due to long-term use. In addition, when it is desired to slightly change the position of the lifting reversal hole to be formed in the concrete product with the lifting hole, it is necessary to prepare a new outer formwork and newly form a hole in the outer formwork.

Further, when forming a substantially rectangular concrete block, it is necessary to make a hole in the formwork even when a hole for lifting is provided on this upper surface. Thus,
The present invention has been made in order to solve the problem of the conventional formwork device, and concrete does not leak from the through hole formed in the outer formwork, and the position of the lifting inversion hole to be formed is determined. When it is necessary to make a slight change, there is no need to prepare a new outer formwork with a new through-hole, making it easy to change the hole position. It is an object of the present invention to provide a formwork apparatus capable of forming a concrete block with a top-surface lifting hole without making a hole in a bottom formwork even when a hole is provided.

[0010]

SUMMARY OF THE INVENTION A formwork apparatus according to the present invention comprises an inner formwork having a substantially rectangular mountain shape, and a pair of plate-like outer forms provided at a predetermined distance from the inner formwork. A mold, a fixing portion made of a permanent magnet that can be fixed to the inside of the outer mold substantially at a substantially central position, a male screw protruding from the fixing portion, and a lifting hole in which a female screw screwable to the male screw is threaded. A hole forming member provided with an anchor member, wherein the hole forming member is fixed at a predetermined position inside the outer mold, and after the concrete filled in the mold is solidified, the mold is released from the mold, and the fixing portion is formed. Characterized in that the turning portion for turning the male screw portion provided on the adhesive surface side is twisted to be detachable from the concrete product in which the fixing portion is made, or that the fixing portion is fixed to the inside of the forming frame. A fixed portion composed of a possible permanent magnet, a male screw portion protruding from the fixed portion, and a male screw portion. A hole forming member provided with an anchor member having a lifting hole in which a matable female screw is threaded, and fixing the hole forming member at a predetermined position inside the formwork, and filling concrete into the formwork. After solidification, remove the mold,
A turning part for turning a male screw part provided on the bonding surface side of the fixing part is twisted so that the fixing part can be detached from the concrete product manufactured.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a formwork apparatus according to the present invention. In FIG. 5, reference numeral 1 denotes an inner mold. The inner mold 1 is formed in a substantially rectangular mountain shape as in the related art. Usually, the inner mold 1 is connected to the bottom mold 14 at a substantially right angle.

Next, reference numeral 2 denotes an outer mold frame. The outer mold frame 2 is provided in a pair with the inner mold frame 1 at a predetermined interval, has a flat plate shape, and has an upper end bent inward (see FIG. 5). . Next, in FIGS. 1 to 4, reference numeral 3 denotes a hole forming member. The hole forming member 3
Comprises an anchor member 7 having a fixing portion 4, a male screw portion 5 protruding from the fixing portion 4, and a lifting hole 6 into which a female screw screwed into the male screw portion 5 is threaded.

The fixing portion 4 has a main body formed of a permanent magnet having a strong magnetic force, and is covered with a metal bowl-shaped cover 17 except for an adhesive surface thereof. Further, as understood from FIGS. 1 and 2, a male screw portion 5 is formed to protrude outward from the center of the surface opposite to the bonding surface of the fixing portion 4. As shown in FIG. 1, the male screw portion 5 has a rotation bulging portion 9 that fits loosely into the fixing portion 4. The rotating bulge 9 is formed integrally with the protruding male screw 8 and holds the protruding male screw 8 in a rotatable manner.

Further, the rotary bulging portion 9 is provided with a torsion concave portion 10, and as understood from FIG.
A detaching member 13 such as a hexagon wrench is fitted into the concave portion 10 and rotated so that the fixing portion 4 can be separated from the concrete product. Next, the anchor member 7 includes a hole forming main body 11 having a lifting hole 6 in which a female screw to be screwed into the male screw portion 5 is threaded, and a tail-shaped anchor 12 extending from the hole forming main body 11. It is configured.

Here, the state of use of the present invention will be described. First, the hole forming member 3 is sucked and fixed to the inside of the outer mold frame 2 at a substantially central position (see FIGS. 1 and 5). At this time, since the attachment is performed by the magnet, the position can be easily changed. After setting as shown in FIG. 5, concrete is filled in a mold and solidified. After the concrete has solidified,
The mold is removed from the mold. As can be understood from FIG. 3, the hole forming member 3 is buried and fixed in the concrete, and the fixing portion 4 also separates from the inside of the outer mold 2 against the attraction magnetic force.

After that, the detaching member 13 and the like are fitted into the concave portion 10 and rotated to remove the fixing portion 4 from the hole forming member 3. More specifically, as shown in FIG.
Then, the fixing portion 4 is twisted out. When the concrete member 18 is lifted, a screw-type insertion rod 15 may be screwed into the lifting hole 6 as shown in FIGS.

FIG. 6 shows another embodiment of the present invention, in which the hole forming member 3 is suctioned at a predetermined position of the bottom mold frame 14. Concrete is filled from this state, and the mold is released after solidification. Then, the same operation as in FIG. 3 is performed, and the fixing portion 4 is removed. Thereafter, as shown in FIG. 8, the concrete block 19 can be lifted upward.

[0018]

The present invention has the above configuration. And
ADVANTAGE OF THE INVENTION According to the formwork apparatus which concerns on this invention, concrete does not leak from the through-hole drilled in the formwork, and when it is desired to slightly change the position of the lifting hole to be formed, it is necessary to newly drill a through-hole. It is not necessary to prepare a drilled formwork, the hole position can be easily changed, and when forming a substantially rectangular concrete block, even if a hole for lifting is provided on this upper surface, without drilling a hole in the formwork It is possible to provide a concrete product with a high-quality lifting hole, which can be easily and quickly installed in a formwork, for example, a concrete block with a lifting hole can be manufactured.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a use state (No. 1) of a formwork device according to the present invention.

FIG. 2 is a schematic configuration explanatory view showing a schematic configuration of a hole forming member.

FIG. 3 is a schematic sectional view showing a use state (No. 2) of the formwork device according to the present invention.

FIG. 4 is a schematic cross-sectional view showing a use state (No. 1) of a concrete product with lifting holes.

FIG. 5 is a schematic cross-sectional view illustrating a use state of a form device for a U-shaped groove with a lifting hole.

FIG. 6 is a schematic sectional view showing a use state of a concrete block formwork device with lifting holes.

FIG. 7 is a configuration explanatory view showing a lifting state of a U-shaped groove with a lifting inversion hole.

FIG. 8 is a configuration explanatory view showing a lifting state of a concrete block with lifting holes.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 inner mold frame 2 outer mold frame 3 hole forming member 4 fixing portion 5 male screw portion 6 lifting hole in which female screw is threaded 7 anchor member 8 protruding male screw 9 rotating bulging portion 10 concave portion 11 hole forming body 12 anchor 13 removing member 14 Bottom formwork 15 Screw type insertion rod 16 Permanent magnet 17 Cover 18 Concrete member 19 Concrete block

Claims (2)

[Claims] 1. An inner mold having a substantially rectangular mountain shape, a pair of plate-shaped outer molds provided at a predetermined distance from the inner mold, and an inner side of a substantially central position of the outer mold. And a hole forming member provided with an anchor member having a fixing portion formed of a permanent magnet that can be fixed to the fixing portion, a male screw portion projecting from the fixing portion, and a lifting hole in which a female screw screwable to the male screw portion is threaded. The hole forming member is adsorbed to a predetermined position inside the outer mold, and after the concrete filled in the mold is solidified, the mold is released from the mold. A formwork device, wherein the rotating portion is twisted to be detachable from the concrete product in which the fixing portion is manufactured. 2. A mold frame, a fixing portion formed of a permanent magnet that can be fixed to the inside of the mold frame, a male screw portion protruding from the fixing portion, and a lifting hole in which a female screw screwable to the male screw portion is threaded. Fixing the hole forming member at a predetermined position inside the mold, removing the mold after solidifying the concrete filled in the mold, and removing the fixed portion. A turning portion for turning a male screw portion provided on the bonding surface side of the fixing device, wherein the turning portion for turning the male screw portion is detachable from the concrete product in which the fixing portion is manufactured.