JP2595087Y2 - Synthetic resin concrete formwork - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin concrete formwork having high mold release from concrete and high durability.

[0002]

2. Description of the Related Art Conventional concrete forms for concrete are made of wood and metal plates.

[0003]

[Problems to be Solved by the Invention] Formwork made of wood or metal plate is not easily separated from concrete, so that it is easily damaged when the formwork is peeled off, and it is deformed every time it is used repeatedly. There are inferior drawbacks. In addition, metal plate molds that are more durable than wood have the disadvantage that they are heavy and easily rust. In some cases, a release material made of a synthetic resin is attached to the surface of the mold in order to facilitate release from the mold, but there is a drawback that it is not economical in terms of labor and cost.

[0004] For this reason, first of all, there is a need in the art to obtain a concrete formwork that has good mold release, is lightweight and durable, has sufficient strength against concrete pouring, and can be used repeatedly. Had to be solved.

[0005]

Accordingly, the present invention is based on a rectangular mold plate 1 made of polyethylene or polypropylene, and stands upright from four sides of the mold plate 1 to the rear side and continues at the same height on all four sides. A concrete formwork made of a synthetic resin molded with a peripheral edge portion 2 , wherein a back surface of the mold face plate 1 is parallel to the inside of each peripheral edge portion 2 with a small interval 3 therebetween.
And up and down standing on the girder along the four peripheral edges 2
Between the left and right peripheral ribs 4 and the inner sides of the upper, lower, left and right peripheral ribs 4
Having large intervals 6 and 7 for equally dividing the intervals, respectively, and
Run parallel to each other with a small gap 3 equivalent to the small gap 3
So as to connect the four peripheral edges 2 and the peripheral ribs 4
A plurality of sets of intermediate ribs 5 vertically and horizontally, each of which is erected on a double girder,
Together they comprise their respective at equal peripheral portion 2 and the height,
A cross is formed between the small interval 3 and the large intervals 6 and 7.
The low-height auxiliary ribs 8 that are erected
An object of the present invention is to provide a molded synthetic resin concrete form .

[0006]

The mold of the present invention is a synthetic resin molded product made of polyethylene or polypropylene. Therefore, the mold surface in contact with the concrete to be poured is also formed of a polyethylene surface or a polypropylene surface. Good separation. A peripheral edge continuous with the same height on the four sides on the back side of the mold surface and a peripheral rib erected on the cross beam at a small interval reinforce the four sides of the mold face plate, and share the same with the peripheral rib.
The middle ribs of a plurality of sets of vertical and horizontal ribs which are continuous at the same height as the peripheral edge , and which are spaced apart from each other at a large interval between the peripheral edge and the peripheral rib, and which are vertically erected as two sets as a set on the girder, The mold surface is reinforced from the back along with the peripheral edge. Furthermore, the back side of the mold surface is reinforced by low-height auxiliary ribs arranged crosswise in the vertical and horizontal directions within the small space and the large space, so that the strength against concrete construction is reduced. It is well prepared and can withstand repeated use. The present invention has solved the above-mentioned problem as described above.

In the present invention, a plurality of bosses which are connected at an appropriate interval to each other by connecting between the peripheral edges of the four sides and the peripheral ribs parallel to the inside at a small interval are integrally formed. A through-hole penetrating through the peripheral portion and the peripheral rib together with the boss portion, and connecting adjacent adjacent synthetic resin concrete forms of the same type via bolts and nuts mounted in the through-holes. FIG. 6 shows that the drilling process is not required after forming or when using.
As shown in (1), there is an advantage that a mold surface for concrete driving can be constructed to a desired size by using fasteners such as bolts and nuts, and the connection can be easily and firmly made.

Further, in the present invention, the peripheral rib is
It is provided with a plurality of flat locking holes arranged at appropriate intervals, and the other end of a leaf spring fastener having one end fitted into the locking hole is connected to the adjacent synthetic resin concrete form of the same type. The form frames are connected to each other by elastically fitting them into the retaining holes of (a), (b) and (c) of FIG. In addition to the case, there is an advantage that the present invention can be easily applied to the case of constructing an outer corner surface and an inner corner surface of concrete.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 3 and 6 show a first embodiment of the present invention.
As shown in the figure, a rectangular mold plate 1 is provided with a peripheral edge portion 2 which stands at a right angle at the same height so as to form a rectangular frame from four sides to the back side, and is continuous with the four circumferences of the mold plate 1. I have.
The four peripheral edges 2 are opposed to each other at a small interval 3 inside each of them, with both ends continuous with the peripheral edges 2 and at equal heights with peripheral ribs 4 rising from the back side of the mold face plate 1 to the crossbeam. ing.

Between the upper, lower, left and right peripheral ribs 4, two intermediate ribs 5, which are parallel to each other and equally divide the respective inner spaces, are provided from the back side of the mold face plate 1 in the same manner as the peripheral ribs 4. Standing up and the peripheral part 2 and the peripheral rib 4
The heights are equal to each other so as to be continuous with the girder. A small interval 3 equal to the interval between the peripheral edge portion 2 and the peripheral edge rib 4 is formed between the two intermediate ribs 5 of each set. Large vertical and horizontal intervals 6, 7 are formed respectively.

The small ribs 3 and the large gaps 6 and 7 have auxiliary ribs 8 having a low height standing from the back side of the mold face plate 1 so as to equally divide the squares and rectangles separated by the ribs. Are arranged to cross each other. Further, in the first embodiment, the lengths continuous with the peripheral edge portion 2 and the peripheral edge rib 4 in the small space 3 formed along the long side of the rectangular form and in the small space 3 along the short side, respectively. A cubic boss 9 is provided instead of the auxiliary rib 8, and the boss 9 has
A through hole 10 that is continuous with the peripheral portion 2 and the peripheral rib 4 is provided.

In the first embodiment configured as described above, for example, as shown in FIG. 6, the mold face plates 1 are aligned on the same plane, and the same molds are arranged, and an opening is formed in the peripheral rib 4 of one of the molds. Bolt 11 is inserted into the through hole 10 to be
A nut 12 is screwed into a tip protruding from a through-hole 10 that is open to the side, and each mold is fastened at a plurality of locations on adjacent side surfaces, so that a concrete 13 driving surface is used.

Next, FIGS. 4, 5 and 7 (a) and (b)
The second embodiment shown in FIG. 3C will be described.
The basic configuration of the mold including the peripheral portion 2, the small interval 3, the peripheral rib 4, the large intervals 6, 7 and the auxiliary rib 8 is the same as that of the first embodiment. The second embodiment is different from the first embodiment in that, as shown in FIG.
Are provided at a plurality of positions at an appropriate interval from each other, and FIG.
(B) As shown in (c), the adjacent molds are connected to each other by using leaf spring fasteners 15, 16, 17 formed respectively.

FIG. 7A shows a fastening device 15 made of a leaf spring.
FIG. 4B shows a case where the formwork is connected to each other in a plane, FIG. 4B shows a case where the outer corner surface of the concrete 13 is constructed, and FIG. 4C shows a case where the inner corner surface of the concrete 13 is constructed. Is shown. In either case, the fastener 1 is inserted into one of the hook holes 14 of two molds that are adjacent to each other at a plane or at a right angle.
By hooking one end of each of 5, 16, and 17 and elastically fitting the other end to the hook hole 14 of the other mold, it is possible to tighten necessary portions in a one-touch manner. In addition, all of the molds of the present invention shown in Examples 1 and 2 are formed by integral molding of a synthetic resin, and polyethylene or polypropylene is used as the material.

[0015]

[Effect of the Invention] As described above, the mold of the present invention is a synthetic resin molded product made of polyethylene or polypropylene, which has a particularly good mold release property with respect to concrete. The work at the time becomes easy, and since it is not unreasonable, damage to the body is extremely reduced. In spite of being made of synthetic resin, the present invention mold frame has four edges of the mold face plate, with a peripheral edge portion that is continuous at the same height, and with a small interval, a peripheral rib that is erected on the cross beam with the same height. Since it is supported from the back side by the auxiliary ribs arranged within a small interval, the four sides of the rectangular mold surface have sufficient strength, so that it is possible to use a mold frame which is hardly deformed and hardly deformed.

The back surface of the mold face plate is provided with a plurality of sets of intermediate ribs, each of which is vertically erected on a cross-girder with the same height as the peripheral portion, with a large space between the peripheral edge and the peripheral rib, It is reinforced by low-height auxiliary ribs arranged crosswise in the vertical and horizontal directions within the small interval and within the large interval, so that the mold surface is less likely to be distorted, and the strength for concrete construction as a whole is reduced. It is well-equipped, lightweight, and resistant to repeated use.

Further, the formwork of the present invention cuts off the outer sides of the intermediate ribs, which are arranged at two or more locations in the vertical and horizontal directions, by separating the upper, lower, left and right peripheral ribs so that the form is close to a desired size in any direction. Can be reduced. Even in this case, the four sides of the mold surface are supported by the separated peripheral edge and two intermediate ribs having the same shape as the peripheral rib, so that the strength does not decrease. Also, the cutting operation can be easily performed. The present invention has an extremely excellent practical effect as described above.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A 'of FIG.

FIG. 3 is a perspective view of the first embodiment.

FIG. 4 is a front view of a second embodiment.

FIG. 5 is a sectional view taken along line B-B 'of FIG. 4;

FIG. 6 is a partially cutaway plan view showing a use state of the first embodiment.

FIG. 7 is a partially cutaway plan view showing a use state of the second embodiment.

FIG. 8 is a perspective view of a fastener used when using the second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 die face plate 2 peripheral edge 3 small interval 4 peripheral rib 5 intermediate rib 6 large interval 7 large interval 8 auxiliary rib 9 boss 10 through hole 11 bolt 12 nut 13 concrete 14 hook hole 15 fastening tool 16 fastening tool 17 fastening tool

Claims (3)

(57) [Scope of request for utility model registration] 1. A synthetic resin made of polyethylene or polypropylene and formed with a rectangular mold plate 1 and a peripheral portion 2 which stands at right angles from four sides of the mold plate 1 to the rear side and is continuous at the same height on all four sides. A concrete formwork made of steel, on the back side of the mold face plate 1 , a small inside of each peripheral portion 2.
Along the periphery 2 of the four sides in parallel with an interval 3
Up, down, left, and right peripheral ribs 4 erected on the girder;
Large intervals 6, 7 equally dividing the inner interval of the peripheral rib 4 respectively
And at a small interval 3 equivalent to the small interval 3
Four peripheral edges 2 and a peripheral rib 4 facing each other in parallel
A plurality of vertical and horizontal multiples that are erected on a double girder to connect between
The set of intermediate ribs 5 is made equal in height to the peripheral edge 2 respectively.
And the large intervals 6, 7
Low-height auxiliary ribs 8 erected crosswise inside
Are molded integrally with each other to form a synthetic resin concrete formwork. 2. The synthetic resin concrete formwork comprises:
A plurality of bosses 9 connected integrally between the four peripheral edges 2 and the inner peripheral ribs 4 parallel to each other with the small space 3 therebetween and arranged at appropriate intervals are integrally provided. 9
At the same time, a through-hole 10 penetrating through the peripheral edge portion 2 and the peripheral edge rib 4 is provided, and adjacent concrete molds of the same type made of synthetic resin are connected via bolts 11 and nuts 12 attached to the through-holes 10. The synthetic resin concrete formwork according to claim 1, characterized in that it is constituted. 3. The synthetic resin concrete formwork comprises:
A plurality of flat locking holes 14 arranged at appropriate intervals are provided on the peripheral ribs 4 parallel to the inner side of the four side edges 2 with a small space 3 therebetween, and one end is fitted into the locking holes 14. The other end of the attached leaf spring fasteners 14, 15, 16 are engaged with the retaining holes 14 of the same type of synthetic resin concrete form adjacent thereto.
The utility model registration is characterized in that the molds are connected to each other by resiliently fitting the molds.
Item 7. The synthetic resin concrete formwork according to the above item.