JPH08144519A - Separate metal fitting for synthetic resin form - Google Patents

Abstract

PURPOSE: To dispense with bending operation of a metal fitting, facilitate mounting-demounting of form, shorten work time, and improve durability by preventing damage of the metal fitting and synthetic resin form in the case of using separate metal fittings to oppositely arrange the synthetic resin form in a concrete placing space. CONSTITUTION: Standing-up pieces 1, 2, 3 and 4 are arranged on a belt-like flat sheet metal, and parts between the standing-up pieces 1 and 2 and the standing-up pieces 3 and 4 are formed as fitting parts (b) of synthetic resin form B, and a part between the standing-up pieces 2 and 3 is formed as a concrete placing space (c). U-shaped recessed parts 6 are arranged in base parts of the standing-up pieces 1 and 4 on both ends, and upper parts are inclined outside, and are formed as formwork introducing parts 7, and the form introducing parts 7 are expansively opened, and the form B are made mountable and demountable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is constructed such that two synthetic resin mold frames, each having a front surface formed on a mold surface and ribs arranged in a lattice pattern on a peripheral portion and a rear surface surrounded by the peripheral portion, face each other. A separate metal fitting for a synthetic resin mold, which is used to keep both ends of the two synthetic resin molds fitted to the peripheral portions of the mold, to elastically insert the mold. The feature is that it can be easily attached and detached.

[0002]

2. Description of the Related Art In a conventional separate metal fitting, four standing pieces are erected on one side of a strip-shaped flat metal plate, a concrete driving interval is provided at a central portion, and fitting portions having a U-shaped cross section are formed at both ends. After fitting the peripheral portion of the synthetic resin mold into the fitting portion, the outer standing pieces are folded back inward to sandwich the peripheral portion of the synthetic resin mold from above and below.

[0003]

As can be seen from the above description of the mounting operation, the conventional separate metal fittings have a structure in which, when the construction is carried out, the standing pieces on both outer sides are folded back inside after the fitting operation of the formwork. Was essential. Therefore, it takes a lot of labor and time to install the formwork, and it is easy to cause excess and deficiency in the degree of bending of the upright pieces, and the clamping accuracy of the formwork that should be firmly held is not constant, and there is a problem that there is variation. there were. Further, when the standing piece that has been folded back is restored after the completion of pouring the concrete to dismantle the formwork or prepare for the next use, the same labor and time as at the time of construction are required. As a result, the metal fittings are worn out, have a short service life, and are difficult to repeatedly use, and also have a drawback that the mold made of synthetic resin is severely damaged.

From the above, it is possible to reduce the labor for constructing and dismantling the formwork, to shorten the time, to make the precision of the formwork construction constant, and to maintain the durability of the equipment used for a long period of time. This has been a problem to be solved in the separate metal fitting used for the synthetic resin mold.

[0005]

In view of the above, the present invention provides two synthetic resin molds, each having a front surface formed as a mold surface and ribs arranged in a lattice pattern on the peripheral portion and the back surface surrounded by the peripheral portion. In a separate metal fitting that is installed upright so as to face each other and both ends are fitted to the peripheral portions of the two synthetic resin molds to maintain the concrete driving interval, the separate metal fitting is a strip-shaped flat metal plate. First, second, third on one side,
A fourth upright piece is provided, and the first and second upright pieces and the third and fourth upright piece are used as fitting portions of the synthetic resin mold, respectively, and the second and third upright pieces are made of concrete. In addition to the driving interval, the standing bases of the first and fourth standing pieces are bent inward in a U-shape to form a recess for elastically sandwiching the peripheral portion of the synthetic resin mold from the back side. The separate metal fittings for molds made of synthetic resin are provided in which the upper parts of the standing pieces following the recesses are respectively expanded to the outside and formed in the mold introduction part.

Further, in the separate metal fitting of the present invention, a high step is formed between the fitting concave portions at both ends and the intermediate driving gap portion so that the driving gap portion is recessed more than the fitting portion.
It may also be possible to construct a more stable and robust formwork construction.

[0007]

In the separate metal fitting of the present invention having the above-described structure, the peripheral parts of the synthetic resin mold are held in contact with the mold introducing portions formed on both outer ends of the mold, and the peripheral parts of the mold are tilted further outward. By doing so, the fitting portion is opened in the desired gap, the grip of the introduction portion is released by passing through the fitting insertion of the mold, and at the same time, the elastic peripheral portion of the concave portion that is restored at the same time is pressed into the fitting portion, Hold the peripheral part of.

Further, when the mold is disassembled, the synthetic resin mold can be removed by elastically opening the mold introducing portion again to make the mold escape, and then releasing the grip. Repeated use is possible. As described above, the present invention has solved the above-mentioned problems.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the separate metal fitting A of the present invention is provided with a first, a second, a third, and
The first standing piece 1, 2, 3 and 4 are provided with the fourth standing pieces 1, 2, 3 and 4 and face each other at both ends.
The space between them is the fitting portion b of the synthetic resin frame B, and the second
The space between the third upright pieces 2 and 3 is a concrete driving space c.

The first and fourth upright pieces 1 and 4 (upstanding pieces on both ends) are bent so that the upright base portions are formed inward so as to form a U-shaped space, and are made of synthetic resin shown by an imaginary line in the figure. Corresponding to the thickness of the peripheral portion 5 of the frame B, a concave portion 6 is formed to laterally elastically sandwich the peripheral portion 5 from the back surface side.

The upper portions of the first and fourth upright pieces 1 and 4 following the recess 6 are obliquely folded back so as to open outward, and the lower surface (peripheral portion 5) of the synthetic resin form B is fitted. It is formed in the mold introduction part 7 for guiding the matching.

A synthetic resin mold B, which is erected by a separate metal fitting A so as to stand up against a predetermined driving interval, is formed into a rectangle having a smooth mold surface 8 on each surface side,
An integrally molded product is used in which the peripheral portion 5 continuous from the four sides of the mold surface 8 at a right angle in the back direction and the lattice-shaped ribs 9 are arranged on the back surface surrounded by the peripheral portion 5.

In the illustrated embodiment, the separate metal fitting A is a nail hole 10 at the center of the concrete driving interval c.
It is fixed on the cloth base surface (not shown) by the nail 11 driven in from. The fitting portion b of the separate metal fitting A has two synthetic resin mold frames B that are provided to face each other with the second and third upright pieces 2 and 3.
Form B made of synthetic resin that is in contact with the mold surface 8 of
The lower part of the bearing is supported to prevent the driving interval from being opened by the pressure caused by the concrete pouring.

The separate metal fitting A having the above structure is
At the time of mounting the synthetic resin mold B, the mold introducing portion 7 having the lower surface in contact is grasped and expanded outward, and the front end of the peripheral portion 5 of the synthetic resin mold B is introduced into the fitting recess 6. After that, when the grasping of the introduction portion 7 is released and returned to the original position, the edge of the peripheral portion 5 is elastically held in the recess 6 that is restored at the same time.
The peripheral portion 5 of the synthetic resin mold B is fitted into the fitting portion b in a non-removable manner to firmly hold the construction state.

In the disassembly of the constructed mold, the synthetic resin mold B can be easily pulled out by grasping the mold introducing portion 7 again and expanding it outwardly, and opening the fitting portion b greatly together with the concave portion 6. You can

[0016]

As is apparent from the above description, the separate metal fitting of the present invention constructed as described above uses a tool such as a hammer when constructing and disassembling a synthetic resin mold using the same. Can work without Also, since the mold is attached and detached by a simple operation of opening and closing the mold introduction part within the range of elastic bending of the material of the separate metal fittings, labor and time can be shortened and the workability is extremely excellent. There is.

Further, since the bending when holding the mold is unnecessary, the damage to the equipment can be minimized, and the durability of the synthetic resin mold and the separate metal fittings to be used is improved. It is also economical. The present invention has extremely excellent effects as described above.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention and its usage state.

[Explanation of symbols]

 A separate metal fitting 1 1st upright piece 2 2nd upright piece 3 3rd upright piece 4 4th upright piece B Synthetic resin form frame b Fitting part c Concrete driving interval part 5 Peripheral part 6 Recessed part 7 type Frame introduction part 8 Shaped surface 9 Rib 10 Nail hole 11 Nail

Claims (2)

[Claims] 1. Two synthetic resin molds each having a front surface formed as a mold surface and ribs arranged in a lattice pattern on a peripheral portion and a back surface surrounded by the peripheral portion are erected facing each other. In a separate metal fitting used to hold both concrete driving intervals by fitting both ends to the peripheral parts of two synthetic resin molds, the separate metal fittings are the first, second and The third and fourth upright strips are provided, and the first and second upright strips and the third and fourth upright strips are used as fitting portions of the synthetic resin mold, respectively, and the second and third upright strips are connected to each other. In addition to the concrete driving interval, the standing bases of the first and fourth standing pieces are bent inward in a U shape to form a recess for elastically sandwiching the peripheral part of the synthetic resin mold from the back side. The upper part of the standing piece that follows this recess is expanded outward to form the mold introduction part. Separate metal fittings for synthetic resin molds that have been formed. 2. The synthetic resin mold according to claim 1, wherein the fitting portion at both ends of the separate metal fitting and the intermediate driving gap portion have a high step in which the driving gap portion is recessed more than the fitting portion. Separate metal fittings for the frame.